* [PATCH] EmbeddedPkg: remove GdbDebugAgent library
@ 2018-12-12 12:48 Ard Biesheuvel
2018-12-12 15:02 ` Leif Lindholm
0 siblings, 1 reply; 6+ messages in thread
From: Ard Biesheuvel @ 2018-12-12 12:48 UTC (permalink / raw)
To: edk2-devel
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=UTF-8, Size: 137552 bytes --]
The GdbDebugAgent library is unused and unmaintained, and now it
turns out it doesn't build with Clang, so let's just get rid of it.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
BeagleBoardPkg/BeagleBoardPkg.dsc | 3 -
EmbeddedPkg/EmbeddedPkg.dsc | 1 -
EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf | 70 --
EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h | 728 ---------------
EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c | 675 --------------
EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c | 815 -----------------
EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c | 951 -------------------
EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c | 963 --------------------
EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S | 258 ------
EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm | 259 ------
EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt | 15 -
11 files changed, 4738 deletions(-)
diff --git a/BeagleBoardPkg/BeagleBoardPkg.dsc b/BeagleBoardPkg/BeagleBoardPkg.dsc
index 348624a0389c..6dabfa905ae9 100644
--- a/BeagleBoardPkg/BeagleBoardPkg.dsc
+++ b/BeagleBoardPkg/BeagleBoardPkg.dsc
@@ -155,9 +155,6 @@ [LibraryClasses.common.SEC]
# 1/123 faster than Stm or Vstm version
BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
- # Uncomment to turn on GDB stub in SEC.
- #DebugAgentLib|EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
-
[LibraryClasses.common.PEI_CORE]
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
ReportStatusCodeLib|MdeModulePkg/Library/PeiDxeDebugLibReportStatusCode/PeiDxeDebugLibReportStatusCode.inf
diff --git a/EmbeddedPkg/EmbeddedPkg.dsc b/EmbeddedPkg/EmbeddedPkg.dsc
index 9dc1b63dfb87..4d9e6399d575 100644
--- a/EmbeddedPkg/EmbeddedPkg.dsc
+++ b/EmbeddedPkg/EmbeddedPkg.dsc
@@ -237,7 +237,6 @@ [Components.common]
EmbeddedPkg/Library/AcpiLib/AcpiLib.inf
EmbeddedPkg/Library/DebugAgentTimerLibNull/DebugAgentTimerLibNull.inf
EmbeddedPkg/Library/FdtLib/FdtLib.inf
- EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
EmbeddedPkg/Library/PrePiHobLib/PrePiHobLib.inf
EmbeddedPkg/Library/PrePiMemoryAllocationLib/PrePiMemoryAllocationLib.inf
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf b/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
deleted file mode 100644
index cfa8d8a761ca..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
+++ /dev/null
@@ -1,70 +0,0 @@
-#/** @file
-# Null instance of Debug Agent Library with empty functions.
-#
-# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
-#
-# This program and the accompanying materials
-# are licensed and made available under the terms and conditions of the BSD License
-# which accompanies this distribution. The full text of the license may be found at
-# http://opensource.org/licenses/bsd-license.php
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-#
-#
-#**/
-
-[Defines]
- INF_VERSION = 0x00010005
- BASE_NAME = GdbDebugAgent
- FILE_GUID = b9f10c17-6ca0-40b5-9b44-6253cfc7d24b
- MODULE_TYPE = BASE
- VERSION_STRING = 1.0
- LIBRARY_CLASS = DebugAgentLib
-
-#
-# The following information is for reference only and not required by the build tools.
-#
-# VALID_ARCHITECTURES = IA32 X64 EBC
-#
-
-[Sources.common]
- GdbDebugAgent.c
-
-[Sources.arm]
- Arm/Processor.c
- Arm/ExceptionSupport.ARMv6.S
- Arm/ExceptionSupport.ARMv6.asm
-
-[Sources.X64]
- Ia32/Processor.c
-
-[Sources.Ia32]
- X64/Processor.c
-
-
-[Packages]
- MdePkg/MdePkg.dec
- MdeModulePkg/MdeModulePkg.dec
- EmbeddedPkg/EmbeddedPkg.dec
-
-[Packages.arm]
- ArmPkg/ArmPkg.dec
-
-[LibraryClasses]
- BaseLib
- DebugLib
- BaseMemoryLib
- PcdLib
- GdbSerialLib
- CacheMaintenanceLib
- DebugAgentTimerLib
-
-[FeaturePcd.common]
- gEmbeddedTokenSpaceGuid.PcdGdbSerial
-
-[FixedPcd.common]
- gEmbeddedTokenSpaceGuid.PcdGdbMaxPacketRetryCount
- gEmbeddedTokenSpaceGuid.PcdGdbTimerPeriodMilliseconds
-
-[FixedPcd.arm]
- gArmTokenSpaceGuid.PcdCpuVectorBaseAddress
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h b/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h
deleted file mode 100644
index 7d85481c4be9..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h
+++ /dev/null
@@ -1,728 +0,0 @@
-/** @file
- Private include file for GDB stub
-
- Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
-
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#ifndef __GCC_DEBUG_AGENT_INTERNAL__
-#define __GCC_DEBUG_AGENT_INTERNAL__
-
-#include <Uefi.h>
-#include <Library/BaseLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/DebugLib.h>
-#include <Library/PcdLib.h>
-#include <Library/GdbSerialLib.h>
-#include <Library/PrintLib.h>
-#include <Library/CacheMaintenanceLib.h>
-#include <Library/DebugAgentTimerLib.h>
-#include <Library/DebugAgentLib.h>
-
-#include <IndustryStandard/PeImage.h>
-#include <Protocol/DebugSupport.h>
-
-extern CONST CHAR8 mHexToStr[];
-
-// maximum size of input and output buffers
-// This value came from the show remote command of the gdb we tested against
-#define MAX_BUF_SIZE 2000
-
-// maximum size of address buffer
-#define MAX_ADDR_SIZE 32
-
-// maximum size of register number buffer
-#define MAX_REG_NUM_BUF_SIZE 32
-
-// maximum size of length buffer
-#define MAX_LENGTH_SIZE 32
-
-// maximum size of T signal members
-#define MAX_T_SIGNAL_SIZE 64
-
-// the mask used to clear all the cache
-#define TF_BIT 0x00000100
-
-
-//
-// GDB Signal definitions - generic names for interrupts
-//
-#define GDB_SIGINT 2 // Interrupt process via ctrl-c
-#define GDB_SIGILL 4 // Illegal instruction
-#define GDB_SIGTRAP 5 // Trace Trap (Breakpoint and SingleStep)
-#define GDB_SIGEMT 7 // Emulator Trap
-#define GDB_SIGFPE 8 // Floating point exception
-#define GDB_SIGSEGV 11 // Setgment violation, page fault
-
-
-//
-// GDB File I/O Error values, zero means no error
-// Includes all general GDB Unix like error values
-//
-#define GDB_EBADMEMADDRBUFSIZE 11 // the buffer that stores memory Address to be read from/written to is not the right size
-#define GDB_EBADMEMLENGBUFSIZE 12 // the buffer that stores Length is not the right size
-#define GDB_EBADMEMLENGTH 13 // Length, the given number of bytes to read or write, is not the right size
-#define GDB_EBADMEMDATA 14 // one of the bytes or nibbles of the memory is leess than 0
-#define GDB_EBADMEMDATASIZE 15 // the memory data, 'XX..', is too short or too long
-#define GDB_EBADBUFSIZE 21 // the buffer created is not the correct size
-#define GDB_EINVALIDARG 31 // argument is invalid
-#define GDB_ENOSPACE 41 //
-#define GDB_EINVALIDBRKPOINTTYPE 51 // the breakpoint type is not recognized
-#define GDB_EINVALIDREGNUM 61 // given register number is not valid: either <0 or >=Number of Registers
-#define GDB_EUNKNOWN 255 // unknown
-
-
-//
-// These devices are open by GDB so we can just read and write to them
-//
-#define GDB_STDIN 0x00
-#define GDB_STDOUT 0x01
-#define GDB_STDERR 0x02
-
-//
-//Define Register size for different architectures
-//
-#if defined (MDE_CPU_IA32)
-#define REG_SIZE 32
-#elif defined (MDE_CPU_X64)
-#define REG_SIZE 64
-#elif defined (MDE_CPU_ARM)
-#define REG_SIZE 32
-#endif
-
-
-typedef struct {
- EFI_EXCEPTION_TYPE Exception;
- UINT8 SignalNo;
-} EFI_EXCEPTION_TYPE_ENTRY;
-
-
-#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
-
-//
-// Byte packed structure for DR6
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
-typedef union {
- struct {
- UINT32 B0:1; // Breakpoint condition detected
- UINT32 B1:1; // Breakpoint condition detected
- UINT32 B2:1; // Breakpoint condition detected
- UINT32 B3:1; // Breakpoint condition detected
- UINT32 Reserved_1:9; // Reserved
- UINT32 BD:1; // Debug register access detected
- UINT32 BS:1; // Single step
- UINT32 BT:1; // Task switch
- UINT32 Reserved_2:16; // Reserved
- } Bits;
- UINTN UintN;
-} IA32_DR6;
-
-//
-// Byte packed structure for DR7
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
-typedef union {
- struct {
- UINT32 L0:1; // Local breakpoint enable
- UINT32 G0:1; // Global breakpoint enable
- UINT32 L1:1; // Local breakpoint enable
- UINT32 G1:1; // Global breakpoint enable
- UINT32 L2:1; // Local breakpoint enable
- UINT32 G2:1; // Global breakpoint enable
- UINT32 L3:1; // Local breakpoint enable
- UINT32 G3:1; // Global breakpoint enable
- UINT32 LE:1; // Local exact breakpoint enable
- UINT32 GE:1; // Global exact breakpoint enable
- UINT32 Reserved_1:3; // Reserved
- UINT32 GD:1; // Global detect enable
- UINT32 Reserved_2:2; // Reserved
- UINT32 RW0:2; // Read/Write field
- UINT32 LEN0:2; // Length field
- UINT32 RW1:2; // Read/Write field
- UINT32 LEN1:2; // Length field
- UINT32 RW2:2; // Read/Write field
- UINT32 LEN2:2; // Length field
- UINT32 RW3:2; // Read/Write field
- UINT32 LEN3:2; // Length field
- } Bits;
- UINTN UintN;
-} IA32_DR7;
-
-#endif /* if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) */
-
-typedef enum {
- InstructionExecution, //Hardware breakpoint
- DataWrite, //watch
- DataRead, //rwatch
- DataReadWrite, //awatch
- SoftwareBreakpoint, //Software breakpoint
- NotSupported
-} BREAK_TYPE;
-
-//
-// Array of exception types that need to be hooked by the debugger
-//
-extern EFI_EXCEPTION_TYPE_ENTRY gExceptionType[];
-
-//
-// If the periodic callback is called while we are processing an F packet we need
-// to let the callback know to not read from the serail stream as it could steal
-// characters from the F reponse packet
-//
-extern BOOLEAN gProcessingFPacket;
-
-
-/**
- Return the number of entries in the gExceptionType[]
-
- @retval UINTN, the number of entries in the gExceptionType[] array.
- **/
-UINTN
-MaxEfiException (
- VOID
- );
-
-
-/**
- Check to see if the ISA is supported.
- ISA = Instruction Set Architecture
-
- @retval TRUE if Isa is supported,
- FALSE otherwise.
- **/
-BOOLEAN
-CheckIsa (
- IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
- );
-
-
-/**
- Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
-
- @param SystemContext Register content at time of the exception
- @param GdbExceptionType GDB exception type
- **/
-
-VOID
-GdbSendTSignal (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINT8 GdbExceptionType
- );
-
-
-/**
- Translates the EFI mapping to GDB mapping
-
- @param EFIExceptionType EFI Exception that is being processed
- @retval UINTN that corresponds to EFIExceptionType's GDB exception type number
- **/
-UINT8
-ConvertEFItoGDBtype (
- IN EFI_EXCEPTION_TYPE EFIExceptionType
- );
-
-
-/**
- Empties the given buffer
- @param *Buf pointer to the first element in buffer to be emptied
- **/
-VOID
-EmptyBuffer (
- IN CHAR8 *Buf
- );
-
-
-/**
- Converts an 8-bit Hex Char into a INTN.
-
- @param Char - the hex character to be converted into UINTN
- @retval a INTN, from 0 to 15, that corressponds to Char
- -1 if Char is not a hex character
- **/
-INTN
-HexCharToInt (
- IN CHAR8 Char
- );
-
-
-/** 'E NN'
- Send an error with the given error number after converting to hex.
- The error number is put into the buffer in hex. '255' is the biggest errno we can send.
- ex: 162 will be sent as A2.
-
- @param errno the error number that will be sent
- **/
-VOID
-EFIAPI
-SendError (
- IN UINT8 ErrorNum
- );
-
-
-/**
- Send 'OK' when the function is done executing successfully.
- **/
-VOID
-SendSuccess (
- VOID
- );
-
-
-/**
- Send empty packet to specify that particular command/functionality is not supported.
- **/
-VOID
-SendNotSupported (
- VOID
- );
-
-/** ‘p n’
- Reads the n-th register's value into an output buffer and sends it as a packet
- @param SystemContext Register content at time of the exception
- @param InBuffer This is the input buffer received from gdb server
- **/
-VOID
-ReadNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- );
-
-
-/** ‘g’
- Reads the general registers into an output buffer and sends it as a packet
- @param SystemContext Register content at time of the exception
- **/
-VOID
-ReadGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext
- );
-
-
-/** ‘P n...=r...’
- Writes the new value of n-th register received into the input buffer to the n-th register
- @param SystemContext Register content at time of the exception
- @param InBuffer This is the input buffer received from gdb server
- **/
-VOID
-WriteNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- );
-
-
-/** ‘G XX...’
- Writes the new values received into the input buffer to the general registers
- @param SystemContext Register content at time of the exception
- @param InBuffer Pointer to the input buffer received from gdb server
- **/
-
-VOID
-WriteGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- );
-
-
-/** ‘m addr,length ’
- Find the Length of the area to read and the start addres. Finally, pass them to
- another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
- send it as a packet.
-
- @param *PacketData Pointer to Payload data for the packet
- **/
-VOID
-ReadFromMemory (
- IN CHAR8 *PacketData
- );
-
-
-/** ‘M addr,length :XX...’
- Find the Length of the area in bytes to write and the start addres. Finally, pass them to
- another function, TransferFromInBufToMem, that will write to that memory space the info in
- the input buffer.
-
- @param PacketData Pointer to Payload data for the packet
- **/
-VOID
-WriteToMemory (
- IN CHAR8 *PacketData
- );
-
-
-/** ‘c [addr ]’
- Continue. addr is Address to resume. If addr is omitted, resume at current
- Address.
-
- @param SystemContext Register content at time of the exception
- @param *PacketData Pointer to PacketData
- **/
-
-VOID
-ContinueAtAddress (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- );
-
-
-/** ‘s [addr ]’
- Single step. addr is the Address at which to resume. If addr is omitted, resume
- at same Address.
-
- @param SystemContext Register content at time of the exception
- @param PacketData Pointer to Payload data for the packet
- **/
-VOID
-SingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- );
-
-/**
- Insert Single Step in the SystemContext
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-AddSingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext
- );
-
-/**
- Remove Single Step in the SystemContext
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-RemoveSingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext
- );
-
-
-/**
- ‘Z1, [addr], [length]’
- ‘Z2, [addr], [length]’
- ‘Z3, [addr], [length]’
- ‘Z4, [addr], [length]’
-
- Insert hardware breakpoint/watchpoint at address addr of size length
-
- @param SystemContext Register content at time of the exception
- @param *PacketData Pointer to the Payload data for the packet
-
-**/
-VOID
-EFIAPI
-InsertBreakPoint(
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- );
-
-
-/**
- ‘z1, [addr], [length]’
- ‘z2, [addr], [length]’
- ‘z3, [addr], [length]’
- ‘z4, [addr], [length]’
-
- Remove hardware breakpoint/watchpoint at address addr of size length
-
- @param SystemContext Register content at time of the exception
- @param *PacketData Pointer to the Payload data for the packet
-
-**/
-VOID
-EFIAPI
-RemoveBreakPoint(
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- );
-
-
-/**
- Exception Hanldler for GDB. It will be called for all exceptions
- registered via the gExceptionType[] array.
-
- @param ExceptionType Exception that is being processed
- @param SystemContext Register content at time of the exception
-
- **/
-VOID
-EFIAPI
-GdbExceptionHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- );
-
-
-/**
- Periodic callback for GDB. This function is used to catch a ctrl-c or other
- break in type command from GDB.
-
- @param SystemContext Register content at time of the call
-
- **/
-VOID
-EFIAPI
-GdbPeriodicCallBack (
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- );
-
-
-/**
- Make two serail consoles: 1) StdIn and StdOut via GDB. 2) StdErr via GDB.
-
- These console show up on the remote system running GDB
-
-**/
-
-VOID
-GdbInitializeSerialConsole (
- VOID
- );
-
-
-/**
- Send a GDB Remote Serial Protocol Packet
-
- $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
- the packet teminating character '#' and the two digit checksum.
-
- If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
- in an infinit loop. This is so if you unplug the debugger code just keeps running
-
- @param PacketData Payload data for the packet
-
- @retval Number of bytes of packet data sent.
-
-**/
-UINTN
-SendPacket (
- IN CHAR8 *PacketData
- );
-
-
-/**
- Receive a GDB Remote Serial Protocol Packet
-
- $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
- the packet teminating character '#' and the two digit checksum.
-
- If host re-starts sending a packet without ending the previous packet, only the last valid packet is processed.
- (In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)
-
- If an ack '+' is not sent resend the packet
-
- @param PacketData Payload data for the packet
-
- @retval Number of bytes of packet data received.
-
- **/
-UINTN
-ReceivePacket (
- OUT CHAR8 *PacketData,
- IN UINTN PacketDataSize
- );
-
-
-/**
- Read data from a FileDescriptor. On success number of bytes read is returned. Zero indicates
- the end of a file. On error -1 is returned. If count is zero, GdbRead returns zero.
-
- @param FileDescriptor Device to talk to.
- @param Buffer Buffer to hold Count bytes that were read
- @param Count Number of bytes to transfer.
-
- @retval -1 Error
- @retval {other} Number of bytes read.
-
-**/
-INTN
-GdbRead (
- IN INTN FileDescriptor,
- OUT VOID *Buffer,
- IN UINTN Count
- );
-
-
-/**
- Write data to a FileDescriptor. On success number of bytes written is returned. Zero indicates
- nothing was written. On error -1 is returned.
-
- @param FileDescriptor Device to talk to.
- @param Buffer Buffer to hold Count bytes that are to be written
- @param Count Number of bytes to transfer.
-
- @retval -1 Error
- @retval {other} Number of bytes written.
-
-**/
-INTN
-GdbWrite (
- IN INTN FileDescriptor,
- OUT CONST VOID *Buffer,
- IN UINTN Count
- );
-
-UINTN *
-FindPointerToRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber
- );
-
-CHAR8 *
-BasicReadRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *OutBufPtr
- );
-
-VOID
-TransferFromInBufToMem (
- IN UINTN Length,
- IN UINT8 *Address,
- IN CHAR8 *NewData
- );
-
-VOID
-TransferFromMemToOutBufAndSend (
- IN UINTN Length,
- IN UINT8 *Address
- );
-
-CHAR8 *
-BasicWriteRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *InBufPtr
- );
-
-VOID
-PrintReg (
- EFI_SYSTEM_CONTEXT SystemContext
- );
-
-UINTN
-ParseBreakpointPacket (
- IN CHAR8 *PacketData,
- OUT UINTN *Type,
- OUT UINTN *Address,
- OUT UINTN *Length
- );
-
-UINTN
-GetBreakpointDataAddress (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN BreakpointNumber
- );
-
-UINTN
-GetBreakpointDetected (
- IN EFI_SYSTEM_CONTEXT SystemContext
- );
-
-BREAK_TYPE
-GetBreakpointType (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN BreakpointNumber
- );
-
-UINTN
-ConvertLengthData (
- IN UINTN Length
- );
-
-EFI_STATUS
-FindNextFreeDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- OUT UINTN *Register
- );
-
-EFI_STATUS
-EnableDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Register,
- IN UINTN Address,
- IN UINTN Length,
- IN UINTN Type
- );
-
-EFI_STATUS
-FindMatchingDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Address,
- IN UINTN Length,
- IN UINTN Type,
- OUT UINTN *Register
- );
-
-EFI_STATUS
-DisableDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Register
- );
-
-VOID
-InitializeProcessor (
- VOID
- );
-
-/**
- Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
-
- @param SystemContext Register content at time of the exception
- @param GdbExceptionType GDB exception type
- **/
-VOID
-ProcessorSendTSignal (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINT8 GdbExceptionType,
- IN OUT CHAR8 *TSignalPtr,
- IN UINTN SizeOfBuffer
- );
-
-/**
- Check to see if this exception is related to ctrl-c handling.
-
- @param ExceptionType Exception that is being processed
- @param SystemContext Register content at time of the exception
-
- @return TRUE This was a ctrl-c check that did not find a ctrl-c
- @return FALSE This was not a ctrl-c check or some one hit ctrl-c
- **/
-BOOLEAN
-ProcessorControlC (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- );
-
-
-/**
- Initialize debug agent.
-
- This function is used to set up debug enviroment. It may enable interrupts.
-
- @param[in] InitFlag Init flag is used to decide initialize process.
- @param[in] Context Context needed according to InitFlag, it was optional.
-
-**/
-VOID
-EFIAPI
-DebugAgentHookExceptions (
- IN UINT32 InitFlag,
- IN VOID *Context OPTIONAL
- );
-
-
-#endif
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c b/EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c
deleted file mode 100644
index a43ff95d03a3..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c
+++ /dev/null
@@ -1,675 +0,0 @@
-/** @file
- Processor specific parts of the GDB stub
-
- Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
-
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-
-#include <GdbDebugAgent.h>
-#include <Library/PrintLib.h>
-#include <Library/ArmLib.h>
-
-//
-// Externs from the exception handler assembly file
-//
-VOID
-ExceptionHandlersStart (
- VOID
- );
-
-VOID
-ExceptionHandlersEnd (
- VOID
- );
-
-VOID
-CommonExceptionEntry (
- VOID
- );
-
-VOID
-AsmCommonExceptionEntry (
- VOID
- );
-
-
-//
-// Array of exception types that need to be hooked by the debugger
-// (efi, gdb) //efi number
-//
-EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
- { EXCEPT_ARM_SOFTWARE_INTERRUPT, GDB_SIGTRAP },
- { EXCEPT_ARM_UNDEFINED_INSTRUCTION, GDB_SIGTRAP },
- { EXCEPT_ARM_PREFETCH_ABORT, GDB_SIGTRAP },
- { EXCEPT_ARM_DATA_ABORT, GDB_SIGTRAP }, // GDB_SIGEMT
- { EXCEPT_ARM_RESERVED, GDB_SIGTRAP }, // GDB_SIGILL
- { EXCEPT_ARM_FIQ, GDB_SIGINT } // Used for ctrl-c
-};
-
-// Shut up some annoying RVCT warnings
-#ifdef __CC_ARM
-#pragma diag_suppress 1296
-#endif
-
-UINTN gRegisterOffsets[] = {
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R0),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R1),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R2),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R3),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R4),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R5),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R6),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R7),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R8),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R9),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R10),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R11),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R12),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, SP),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, LR),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, PC),
- 0x00000F01, // f0
- 0x00000F02,
- 0x00000F03,
- 0x00000F11, // f1
- 0x00000F12,
- 0x00000F13,
- 0x00000F21, // f2
- 0x00000F22,
- 0x00000F23,
- 0x00000F31, // f3
- 0x00000F32,
- 0x00000F33,
- 0x00000F41, // f4
- 0x00000F42,
- 0x00000F43,
- 0x00000F51, // f5
- 0x00000F52,
- 0x00000F53,
- 0x00000F61, // f6
- 0x00000F62,
- 0x00000F63,
- 0x00000F71, // f7
- 0x00000F72,
- 0x00000F73,
- 0x00000FFF, // fps
- OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, CPSR)
-};
-
-// restore warnings for RVCT
-#ifdef __CC_ARM
-#pragma diag_default 1296
-#endif
-
-
-/**
- Return the number of entries in the gExceptionType[]
-
- @retval UINTN, the number of entries in the gExceptionType[] array.
- **/
-UINTN
-MaxEfiException (
- VOID
- )
-{
- return sizeof (gExceptionType)/sizeof (EFI_EXCEPTION_TYPE_ENTRY);
-}
-
-
-
-
-/**
- Check to see if the ISA is supported.
- ISA = Instruction Set Architecture
-
- @retval TRUE if Isa is supported
-
-**/
-BOOLEAN
-CheckIsa (
- IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
- )
-{
- if (Isa == IsaArm) {
- return TRUE;
- } else {
- return FALSE;
- }
-}
-
-
-/**
- This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
- It is, by default, set to find the register pointer of the ARM member
- @param SystemContext Register content at time of the exception
- @param RegNumber The register to which we want to find a pointer
- @retval the pointer to the RegNumber-th pointer
- **/
-UINTN *
-FindPointerToRegister(
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber
- )
-{
- UINT8 *TempPtr;
- ASSERT(gRegisterOffsets[RegNumber] < 0xF00);
- TempPtr = ((UINT8 *)SystemContext.SystemContextArm) + gRegisterOffsets[RegNumber];
- return (UINT32 *)TempPtr;
-}
-
-
-/**
- Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
- @param SystemContext Register content at time of the exception
- @param RegNumber the number of the register that we want to read
- @param OutBufPtr pointer to the output buffer's end. the new data will be added from this point on.
- @retval the pointer to the next character of the output buffer that is available to be written on.
- **/
-CHAR8 *
-BasicReadRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *OutBufPtr
- )
-{
- UINTN RegSize;
- CHAR8 Char;
-
- if (gRegisterOffsets[RegNumber] > 0xF00) {
- AsciiSPrint(OutBufPtr, 9, "00000000");
- OutBufPtr += 8;
- return OutBufPtr;
- }
-
- RegSize = 0;
- while (RegSize < 32) {
- Char = mHexToStr[(UINT8)((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
- if ((Char >= 'A') && (Char <= 'F')) {
- Char = Char - 'A' + 'a';
- }
- *OutBufPtr++ = Char;
-
- Char = mHexToStr[(UINT8)((*FindPointerToRegister(SystemContext, RegNumber) >> RegSize) & 0xf)];
- if ((Char >= 'A') && (Char <= 'F')) {
- Char = Char - 'A' + 'a';
- }
- *OutBufPtr++ = Char;
-
- RegSize = RegSize + 8;
- }
- return OutBufPtr;
-}
-
-
-/**
- Reads the n-th register's value into an output buffer and sends it as a packet
- @param SystemContext Register content at time of the exception
- @param InBuffer Pointer to the input buffer received from gdb server
- **/
-VOID
-ReadNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN RegNumber;
- CHAR8 OutBuffer[9]; // 1 reg=8 hex chars, and the end '\0' (escape seq)
- CHAR8 *OutBufPtr; // pointer to the output buffer
-
- RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
-
- if (RegNumber >= (sizeof (gRegisterOffsets)/sizeof (UINTN))) {
- SendError (GDB_EINVALIDREGNUM);
- return;
- }
-
- OutBufPtr = OutBuffer;
- OutBufPtr = BasicReadRegister (SystemContext, RegNumber, OutBufPtr);
-
- *OutBufPtr = '\0'; // the end of the buffer
- SendPacket(OutBuffer);
-}
-
-
-/**
- Reads the general registers into an output buffer and sends it as a packet
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-ReadGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- UINTN Index;
- // a UINT32 takes 8 ascii characters
- CHAR8 OutBuffer[(sizeof (gRegisterOffsets) * 2) + 1];
- CHAR8 *OutBufPtr;
-
- // It is not safe to allocate pool here....
- OutBufPtr = OutBuffer;
- for (Index = 0; Index < (sizeof (gRegisterOffsets)/sizeof (UINTN)); Index++) {
- OutBufPtr = BasicReadRegister (SystemContext, Index, OutBufPtr);
- }
-
- *OutBufPtr = '\0';
- SendPacket(OutBuffer);
-}
-
-
-/**
- Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
- @param SystemContext Register content at time of the exception
- @param RegNumber the number of the register that we want to write
- @param InBufPtr pointer to the output buffer. the new data will be extracted from the input buffer from this point on.
- @retval the pointer to the next character of the input buffer that can be used
- **/
-CHAR8 *
-BasicWriteRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *InBufPtr
- )
-{
- UINTN RegSize;
- UINTN TempValue; // the value transferred from a hex char
- UINT32 NewValue; // the new value of the RegNumber-th Register
-
- if (gRegisterOffsets[RegNumber] > 0xF00) {
- return InBufPtr + 8;
- }
-
- NewValue = 0;
- RegSize = 0;
- while (RegSize < 32) {
- TempValue = HexCharToInt(*InBufPtr++);
-
- if ((INTN)TempValue < 0) {
- SendError (GDB_EBADMEMDATA);
- return NULL;
- }
-
- NewValue += (TempValue << (RegSize+4));
- TempValue = HexCharToInt(*InBufPtr++);
-
- if ((INTN)TempValue < 0) {
- SendError (GDB_EBADMEMDATA);
- return NULL;
- }
-
- NewValue += (TempValue << RegSize);
- RegSize = RegSize + 8;
- }
- *(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
- return InBufPtr;
-}
-
-
-/** ‘P n...=r...’
- Writes the new value of n-th register received into the input buffer to the n-th register
- @param SystemContext Register content at time of the exception
- @param InBuffer Ponter to the input buffer received from gdb server
- **/
-VOID
-WriteNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN RegNumber;
- CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
- CHAR8 *RegNumBufPtr;
- CHAR8 *InBufPtr; // pointer to the input buffer
-
- // find the register number to write
- InBufPtr = &InBuffer[1];
- RegNumBufPtr = RegNumBuffer;
- while (*InBufPtr != '=') {
- *RegNumBufPtr++ = *InBufPtr++;
- }
- *RegNumBufPtr = '\0';
- RegNumber = AsciiStrHexToUintn (RegNumBuffer);
-
- // check if this is a valid Register Number
- if (RegNumber >= (sizeof (gRegisterOffsets)/sizeof (UINTN))) {
- SendError (GDB_EINVALIDREGNUM);
- return;
- }
- InBufPtr++; // skips the '=' character
- BasicWriteRegister (SystemContext, RegNumber, InBufPtr);
- SendSuccess();
-}
-
-
-/** ‘G XX...’
- Writes the new values received into the input buffer to the general registers
- @param SystemContext Register content at time of the exception
- @param InBuffer Pointer to the input buffer received from gdb server
- **/
-
-VOID
-EFIAPI
-WriteGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN i;
- CHAR8 *InBufPtr; /// pointer to the input buffer
- UINTN MinLength;
- UINTN RegisterCount = (sizeof (gRegisterOffsets)/sizeof (UINTN));
-
- MinLength = (RegisterCount * 8) + 1; // 'G' plus the registers in ASCII format
-
- if (AsciiStrLen(InBuffer) < MinLength) {
- //Bad message. Message is not the right length
- SendError (GDB_EBADBUFSIZE);
- return;
- }
-
- InBufPtr = &InBuffer[1];
-
- // Read the new values for the registers from the input buffer to an array, NewValueArray.
- // The values in the array are in the gdb ordering
- for(i = 0; i < RegisterCount; i++) {
- InBufPtr = BasicWriteRegister (SystemContext, i, InBufPtr);
- }
-
- SendSuccess ();
-}
-
-
-
-
-/**
- Continue. addr is Address to resume. If addr is omitted, resume at current
- Address.
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-ContinueAtAddress (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- if (PacketData[1] != '\0') {
- SystemContext.SystemContextArm->PC = AsciiStrHexToUintn(&PacketData[1]);
- }
-}
-
-
-/** ‘s [addr ]’
- Single step. addr is the Address at which to resume. If addr is omitted, resume
- at same Address.
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-SingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- SendNotSupported();
-}
-
-
-VOID
-EFIAPI
-InsertBreakPoint (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- SendNotSupported ();
-}
-
-VOID
-EFIAPI
-RemoveBreakPoint (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- SendNotSupported ();
-}
-
-
-/**
- Send the T signal with the given exception type (in gdb order) and possibly
- with n:r pairs related to the watchpoints
-
- @param SystemContext Register content at time of the exception
- @param GdbExceptionType GDB exception type
- **/
-VOID
-ProcessorSendTSignal (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINT8 GdbExceptionType,
- IN OUT CHAR8 *TSignalPtr,
- IN UINTN SizeOfBuffer
- )
-{
- *TSignalPtr = '\0';
-}
-
-/**
- FIQ state is only changed by FIQ exception. We don't want to take FIQ
- ticks in the GDB stub. The stub disables FIQ on entry, but this is the
- third instruction that executes in the execption handler. Thus we have
- a crack we need to test for.
-
- @param PC PC of execption
-
- @return TRUE We are in the GDB stub exception preamble
- @return FALSE We are not in GDB stub code
- **/
-BOOLEAN
-InFiqCrack (
- IN UINT32 PC
- )
-{
- UINT64 VectorBase = PcdGet64 (PcdCpuVectorBaseAddress);
- UINT32 Length = (UINTN)ExceptionHandlersEnd - (UINTN)ExceptionHandlersStart;
-
- if ((PC >= VectorBase) && (PC <= (VectorBase + Length))) {
- return TRUE;
- }
-
- return FALSE;
-}
-
-
-/**
- Check to see if this exception is related to ctrl-c handling.
-
- In this scheme we dedicate FIQ to the ctrl-c handler so it is
- independent of the rest of the system.
-
- SaveAndSetDebugTimerInterrupt () can be used to
-
- @param ExceptionType Exception that is being processed
- @param SystemContext Register content at time of the exception
-
- @return TRUE This was a ctrl-c check that did not find a ctrl-c
- @return FALSE This was not a ctrl-c check or some one hit ctrl-c
- **/
-BOOLEAN
-ProcessorControlC (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- CHAR8 Char;
- BOOLEAN Return = TRUE;
-
- if (ExceptionType != EXCEPT_ARM_FIQ) {
- // Skip it as it is not related to ctrl-c
- return FALSE;
- }
-
- if (InFiqCrack (SystemContext.SystemContextArm->PC)) {
- // We are in our own interrupt preable, so skip this tick.
- // We never want to let gdb see the debug stub running if we can help it
- return FALSE;
- }
-
- while (TRUE) {
- if (!GdbIsCharAvailable ()) {
- //
- // No characters are pending so exit the loop
- //
- Return = TRUE;
- break;
- }
-
- Char = GdbGetChar ();
- if (Char == 0x03) {
- //
- // We have a ctrl-c so exit and process exception for ctrl-c
- //
- Return = FALSE;
- break;
- }
- }
-
- DebugAgentTimerEndOfInterrupt ();
-
- // Force an exit from the exception handler as we are done
- return Return;
-}
-
-
-/**
- Enable/Disable the interrupt of debug timer and return the interrupt state
- prior to the operation.
-
- If EnableStatus is TRUE, enable the interrupt of debug timer.
- If EnableStatus is FALSE, disable the interrupt of debug timer.
-
- @param[in] EnableStatus Enable/Disable.
-
- @retval TRUE Debug timer interrupt were enabled on entry to this call.
- @retval FALSE Debug timer interrupt were disabled on entry to this call.
-
-**/
-BOOLEAN
-EFIAPI
-SaveAndSetDebugTimerInterrupt (
- IN BOOLEAN EnableStatus
- )
-{
- BOOLEAN FiqEnabled;
-
- FiqEnabled = ArmGetFiqState ();
-
- if (EnableStatus) {
- DebugAgentTimerSetPeriod (PcdGet32 (PcdGdbTimerPeriodMilliseconds));
- ArmEnableFiq ();
- } else {
- DebugAgentTimerSetPeriod (0);
- ArmDisableFiq ();
- }
-
- return FiqEnabled;
-}
-
-
-
-VOID
-GdbFPutString (
- IN CHAR8 *String
- );
-
-/**
- Initialize debug agent.
-
- This function is used to set up debug environment to support source level debugging.
- If certain Debug Agent Library instance has to save some private data in the stack,
- this function must work on the mode that doesn't return to the caller, then
- the caller needs to wrap up all rest of logic after InitializeDebugAgent() into one
- function and pass it into InitializeDebugAgent(). InitializeDebugAgent() is
- responsible to invoke the passing-in function at the end of InitializeDebugAgent().
-
- If the parameter Function is not NULL, Debug Agent Library instance will invoke it by
- passing in the Context to be its parameter.
-
- If Function() is NULL, Debug Agent Library instance will return after setup debug
- environment.
-
- @param[in] InitFlag Init flag is used to decide the initialize process.
- @param[in] Context Context needed according to InitFlag; it was optional.
- @param[in] Function Continue function called by debug agent library; it was
- optional.
-
-**/
-VOID
-EFIAPI
-InitializeDebugAgent (
- IN UINT32 InitFlag,
- IN VOID *Context, OPTIONAL
- IN DEBUG_AGENT_CONTINUE Function OPTIONAL
- )
-{
- UINTN Offset;
- UINTN Length;
- BOOLEAN IrqEnabled;
- UINT64 *VectorBase;
-
-
- //
- // Disable interrupts
- //
- IrqEnabled = ArmGetInterruptState ();
- ArmDisableInterrupts ();
- ArmDisableFiq ();
-
- //
- // Copy an implementation of the ARM exception vectors to PcdCpuVectorBaseAddress.
- //
- Length = (UINTN)ExceptionHandlersEnd - (UINTN)ExceptionHandlersStart;
-
- //
- // Reserve space for the exception handlers
- //
- VectorBase = (UINT64 *)(UINTN)PcdGet64 (PcdCpuVectorBaseAddress);
-
-
- // Copy our assembly code into the page that contains the exception vectors.
- CopyMem ((VOID *)VectorBase, (VOID *)ExceptionHandlersStart, Length);
-
- //
- // Patch in the common Assembly exception handler
- //
- Offset = (UINTN)CommonExceptionEntry - (UINTN)ExceptionHandlersStart;
- *(UINTN *) (((UINT8 *)VectorBase) + Offset) = (UINTN)AsmCommonExceptionEntry;
-
- // Flush Caches since we updated executable stuff
- InvalidateInstructionCacheRange ((VOID *)(UINTN)PcdGet64(PcdCpuVectorBaseAddress), Length);
-
- // setup a timer so gdb can break in via ctrl-c
- DebugAgentTimerIntialize ();
-
- if (IrqEnabled) {
- ArmEnableInterrupts ();
- }
-
- if (Function != NULL) {
- Function (Context);
- }
-
- return;
-}
-
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c b/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c
deleted file mode 100644
index 80aa4765c0ef..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c
+++ /dev/null
@@ -1,815 +0,0 @@
-/** @file
- Debug Agent library implementition with empty functions.
-
- Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "GdbDebugAgent.h"
-
-
-UINTN gMaxProcessorIndex = 0;
-
-//
-// Buffers for basic gdb communication
-//
-CHAR8 gInBuffer[MAX_BUF_SIZE];
-CHAR8 gOutBuffer[MAX_BUF_SIZE];
-
-
-//
-// Globals for returning XML from qXfer:libraries:read packet
-//
-UINTN gPacketqXferLibraryOffset = 0;
-UINTN gEfiDebugImageTableEntry = 0;
-CHAR8 gXferLibraryBuffer[2000];
-
-GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mHexToStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
-
-
-// add-symbol-file c:/work/edk2/Build/BeagleBoard/DEBUG_GCC48/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll 0x80008360
-CHAR8 *qXferHack = "<library name=\"c:/work/edk2/Build/BeagleBoard/DEBUG_GCC48/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll\"><segment address=\"0x80008360\"/></library>";
-
-UINTN
-gXferObjectReadResponse (
- IN CHAR8 Type,
- IN CHAR8 *Str
- )
-{
- CHAR8 *OutBufPtr; // pointer to the output buffer
- CHAR8 Char;
- UINTN Count;
-
- // responce starts with 'm' or 'l' if it is the end
- OutBufPtr = gOutBuffer;
- *OutBufPtr++ = Type;
- Count = 1;
-
- // Binary data encoding
- OutBufPtr = gOutBuffer;
- while (*Str != '\0') {
- Char = *Str++;
- if ((Char == 0x7d) || (Char == 0x23) || (Char == 0x24) || (Char == 0x2a)) {
- // escape character
- *OutBufPtr++ = 0x7d;
-
- Char ^= 0x20;
- }
- *OutBufPtr++ = Char;
- Count++;
- }
-
- *OutBufPtr = '\0' ; // the end of the buffer
- SendPacket (gOutBuffer);
-
- return Count;
-}
-
-/**
- Process "qXfer:object:read:annex:offset,length" request.
-
- Returns an XML document that contains loaded libraries. In our case it is
- infomration in the EFI Debug Inmage Table converted into an XML document.
-
- GDB will call with an arbitrary length (it can't know the real length and
- will reply with chunks of XML that are easy for us to deal with. Gdb will
- keep calling until we say we are done. XML doc looks like:
-
- <library-list>
- <library name="/a/a/c/d.dSYM"><segment address="0x10000000"/></library>
- <library name="/a/m/e/e.pdb"><segment address="0x20000000"/></library>
- <library name="/a/l/f/f.dll"><segment address="0x30000000"/></library>
- </library-list>
-
- Since we can not allocate memory in interupt context this module has
- assumptions about how it will get called:
- 1) Length will generally be max remote packet size (big enough)
- 2) First Offset of an XML document read needs to be 0
- 3) This code will return back small chunks of the XML document on every read.
- Each subseqent call will ask for the next available part of the document.
-
- Note: The only variable size element in the XML is:
- " <library name=\"%s\"><segment address=\"%p\"/></library>\n" and it is
- based on the file path and name of the symbol file. If the symbol file name
- is bigger than the max gdb remote packet size we could update this code
- to respond back in chunks.
-
- @param Offset offset into special data area
- @param Length number of bytes to read starting at Offset
-
- **/
-VOID
-QxferLibrary (
- IN UINTN Offset,
- IN UINTN Length
- )
-{
- gPacketqXferLibraryOffset += gXferObjectReadResponse ('m', "<library-list>\n");
- gPacketqXferLibraryOffset += gXferObjectReadResponse ('m', qXferHack);
- gXferObjectReadResponse ('l', "</library-list>\n");
- gPacketqXferLibraryOffset = 0;
-}
-
-/**
- Transfer length bytes of input buffer, starting at Address, to memory.
-
- @param length the number of the bytes to be transferred/written
- @param *address the start address of the transferring/writing the memory
- @param *new_data the new data to be written to memory
- **/
-
-VOID
-TransferFromInBufToMem (
- IN UINTN Length,
- IN unsigned char *Address,
- IN CHAR8 *NewData
- )
-{
- CHAR8 c1;
- CHAR8 c2;
-
- while (Length-- > 0) {
- c1 = (CHAR8)HexCharToInt (*NewData++);
- c2 = (CHAR8)HexCharToInt (*NewData++);
-
- if ((c1 < 0) || (c2 < 0)) {
- SendError (GDB_EBADMEMDATA);
- return;
- }
- *Address++ = (UINT8)((c1 << 4) + c2);
- }
-
- SendSuccess();
-}
-
-
-/**
- Transfer Length bytes of memory starting at Address to an output buffer, OutBuffer. This function will finally send the buffer
- as a packet.
-
- @param Length the number of the bytes to be transferred/read
- @param *address pointer to the start address of the transferring/reading the memory
- **/
-
-VOID
-TransferFromMemToOutBufAndSend (
- IN UINTN Length,
- IN unsigned char *Address
- )
-{
- // there are Length bytes and every byte is represented as 2 hex chars
- CHAR8 OutBuffer[MAX_BUF_SIZE];
- CHAR8 *OutBufPtr; // pointer to the output buffer
- CHAR8 Char;
-
- OutBufPtr = OutBuffer;
- while (Length > 0) {
-
- Char = mHexToStr[*Address >> 4];
- if ((Char >= 'A') && (Char <= 'F')) {
- Char = Char - 'A' + 'a';
- }
- *OutBufPtr++ = Char;
-
- Char = mHexToStr[*Address & 0x0f];
- if ((Char >= 'A') && (Char <= 'F')) {
- Char = Char - 'A' + 'a';
- }
- *OutBufPtr++ = Char;
-
- Address++;
- Length--;
- }
-
- *OutBufPtr = '\0' ; // the end of the buffer
- SendPacket (OutBuffer);
-}
-
-
-
-/**
- Send a GDB Remote Serial Protocol Packet
-
- $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
- the packet teminating character '#' and the two digit checksum.
-
- If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
- in an infinit loop. This is so if you unplug the debugger code just keeps running
-
- @param PacketData Payload data for the packet
-
-
- @retval Number of bytes of packet data sent.
-
-**/
-UINTN
-SendPacket (
- IN CHAR8 *PacketData
- )
-{
- UINT8 CheckSum;
- UINTN Timeout;
- CHAR8 *Ptr;
- CHAR8 TestChar;
- UINTN Count;
-
- Timeout = PcdGet32 (PcdGdbMaxPacketRetryCount);
-
- Count = 0;
- do {
-
- Ptr = PacketData;
-
- if (Timeout-- == 0) {
- // Only try a finite number of times so we don't get stuck in the loop
- return Count;
- }
-
- // Packet prefix
- GdbPutChar ('$');
-
- for (CheckSum = 0, Count =0 ; *Ptr != '\0'; Ptr++, Count++) {
- GdbPutChar (*Ptr);
- CheckSum = CheckSum + *Ptr;
- }
-
- // Packet terminating character and checksum
- GdbPutChar ('#');
- GdbPutChar (mHexToStr[CheckSum >> 4]);
- GdbPutChar (mHexToStr[CheckSum & 0x0F]);
-
- TestChar = GdbGetChar ();
- } while (TestChar != '+');
-
- return Count;
-}
-
-/**
- Receive a GDB Remote Serial Protocol Packet
-
- $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
- the packet teminating character '#' and the two digit checksum.
-
- If host re-starts sending a packet without ending the previous packet, only the last valid packet is processed.
- (In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)
-
- If an ack '+' is not sent resend the packet
-
- @param PacketData Payload data for the packet
-
- @retval Number of bytes of packet data received.
-
-**/
-UINTN
-ReceivePacket (
- OUT CHAR8 *PacketData,
- IN UINTN PacketDataSize
- )
-{
- UINT8 CheckSum;
- UINTN Index;
- CHAR8 Char;
- CHAR8 SumString[3];
- CHAR8 TestChar;
-
- ZeroMem (PacketData, PacketDataSize);
-
- for (;;) {
- // wait for the start of a packet
- TestChar = GdbGetChar ();
- while (TestChar != '$') {
- TestChar = GdbGetChar ();
- };
-
- retry:
- for (Index = 0, CheckSum = 0; Index < (PacketDataSize - 1); Index++) {
- Char = GdbGetChar ();
- if (Char == '$') {
- goto retry;
- }
- if (Char == '#') {
- break;
- }
-
- PacketData[Index] = Char;
- CheckSum = CheckSum + Char;
- }
- PacketData[Index] = '\0';
-
- if (Index == PacketDataSize) {
- continue;
- }
-
- SumString[0] = GdbGetChar ();
- SumString[1] = GdbGetChar ();
- SumString[2] = '\0';
-
- if (AsciiStrHexToUintn (SumString) == CheckSum) {
- // Ack: Success
- GdbPutChar ('+');
-
- // Null terminate the callers string
- PacketData[Index] = '\0';
- return Index;
- } else {
- // Ack: Failure
- GdbPutChar ('-');
- }
- }
-
- //return 0;
-}
-
-
-/**
- Empties the given buffer
- @param Buf pointer to the first element in buffer to be emptied
- **/
-VOID
-EmptyBuffer (
- IN CHAR8 *Buf
- )
-{
- *Buf = '\0';
-}
-
-
-/**
- Converts an 8-bit Hex Char into a INTN.
-
- @param Char the hex character to be converted into UINTN
- @retval a INTN, from 0 to 15, that corressponds to Char
- -1 if Char is not a hex character
- **/
-INTN
-HexCharToInt (
- IN CHAR8 Char
- )
-{
- if ((Char >= 'A') && (Char <= 'F')) {
- return Char - 'A' + 10;
- } else if ((Char >= 'a') && (Char <= 'f')) {
- return Char - 'a' + 10;
- } else if ((Char >= '0') && (Char <= '9')) {
- return Char - '0';
- } else { // if not a hex value, return a negative value
- return -1;
- }
-}
-
- // 'E' + the biggest error number is 255, so its 2 hex digits + buffer end
-CHAR8 *gError = "E__";
-
-/** 'E NN'
- Send an error with the given error number after converting to hex.
- The error number is put into the buffer in hex. '255' is the biggest errno we can send.
- ex: 162 will be sent as A2.
-
- @param errno the error number that will be sent
- **/
-VOID
-EFIAPI
-SendError (
- IN UINT8 ErrorNum
- )
-{
- //
- // Replace _, or old data, with current errno
- //
- gError[1] = mHexToStr [ErrorNum >> 4];
- gError[2] = mHexToStr [ErrorNum & 0x0f];
-
- SendPacket (gError); // send buffer
-}
-
-
-
-/**
- Send 'OK' when the function is done executing successfully.
- **/
-VOID
-EFIAPI
-SendSuccess (
- VOID
- )
-{
- SendPacket ("OK"); // send buffer
-}
-
-
-/**
- Send empty packet to specify that particular command/functionality is not supported.
- **/
-VOID
-EFIAPI
-SendNotSupported (
- VOID
- )
-{
- SendPacket ("");
-}
-
-
-
-
-
-/**
- Translates the EFI mapping to GDB mapping
-
- @param EFIExceptionType EFI Exception that is being processed
- @retval UINTN that corresponds to EFIExceptionType's GDB exception type number
- **/
-UINT8
-ConvertEFItoGDBtype (
- IN EFI_EXCEPTION_TYPE EFIExceptionType
- )
-{
- UINTN i;
-
- for (i=0; i < MaxEfiException() ; i++) {
- if (gExceptionType[i].Exception == EFIExceptionType) {
- return gExceptionType[i].SignalNo;
- }
- }
- return GDB_SIGTRAP; // this is a GDB trap
-}
-
-
-/** "m addr,length"
- Find the Length of the area to read and the start addres. Finally, pass them to
- another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
- send it as a packet.
- **/
-
-VOID
-EFIAPI
-ReadFromMemory (
- CHAR8 *PacketData
- )
-{
- UINTN Address;
- UINTN Length;
- CHAR8 AddressBuffer[MAX_ADDR_SIZE]; // the buffer that will hold the address in hex chars
- CHAR8 *AddrBufPtr; // pointer to the address buffer
- CHAR8 *InBufPtr; /// pointer to the input buffer
-
- AddrBufPtr = AddressBuffer;
- InBufPtr = &PacketData[1];
- while (*InBufPtr != ',') {
- *AddrBufPtr++ = *InBufPtr++;
- }
- *AddrBufPtr = '\0';
-
- InBufPtr++; // this skips ',' in the buffer
-
- /* Error checking */
- if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
- SendError (GDB_EBADMEMADDRBUFSIZE);
- return;
- }
-
- // 2 = 'm' + ','
- if (AsciiStrLen(PacketData) - AsciiStrLen(AddressBuffer) - 2 >= MAX_LENGTH_SIZE) {
- SendError (GDB_EBADMEMLENGTH);
- return;
- }
-
- Address = AsciiStrHexToUintn (AddressBuffer);
- Length = AsciiStrHexToUintn (InBufPtr);
-
- TransferFromMemToOutBufAndSend (Length, (unsigned char *)Address);
-}
-
-
-/** "M addr,length :XX..."
- Find the Length of the area in bytes to write and the start addres. Finally, pass them to
- another function, TransferFromInBufToMem, that will write to that memory space the info in
- the input buffer.
- **/
-VOID
-EFIAPI
-WriteToMemory (
- IN CHAR8 *PacketData
- )
-{
- UINTN Address;
- UINTN Length;
- UINTN MessageLength;
- CHAR8 AddressBuffer[MAX_ADDR_SIZE]; // the buffer that will hold the Address in hex chars
- CHAR8 LengthBuffer[MAX_LENGTH_SIZE]; // the buffer that will hold the Length in hex chars
- CHAR8 *AddrBufPtr; // pointer to the Address buffer
- CHAR8 *LengthBufPtr; // pointer to the Length buffer
- CHAR8 *InBufPtr; /// pointer to the input buffer
-
- AddrBufPtr = AddressBuffer;
- LengthBufPtr = LengthBuffer;
- InBufPtr = &PacketData[1];
-
- while (*InBufPtr != ',') {
- *AddrBufPtr++ = *InBufPtr++;
- }
- *AddrBufPtr = '\0';
-
- InBufPtr++; // this skips ',' in the buffer
-
- while (*InBufPtr != ':') {
- *LengthBufPtr++ = *InBufPtr++;
- }
- *LengthBufPtr = '\0';
-
- InBufPtr++; // this skips ':' in the buffer
-
- Address = AsciiStrHexToUintn (AddressBuffer);
- Length = AsciiStrHexToUintn (LengthBuffer);
-
- /* Error checking */
-
- //Check if Address is not too long.
- if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
- SendError (GDB_EBADMEMADDRBUFSIZE);
- return;
- }
-
- //Check if message length is not too long
- if (AsciiStrLen(LengthBuffer) >= MAX_LENGTH_SIZE) {
- SendError (GDB_EBADMEMLENGBUFSIZE);
- return;
- }
-
- // Check if Message is not too long/short.
- // 3 = 'M' + ',' + ':'
- MessageLength = (AsciiStrLen(PacketData) - AsciiStrLen(AddressBuffer) - AsciiStrLen(LengthBuffer) - 3);
- if (MessageLength != (2*Length)) {
- //Message too long/short. New data is not the right size.
- SendError (GDB_EBADMEMDATASIZE);
- return;
- }
- TransferFromInBufToMem (Length, (unsigned char *)Address, InBufPtr);
-}
-
-/**
- Parses breakpoint packet data and captures Breakpoint type, Address and length.
- In case of an error, function returns particular error code. Returning 0 meaning
- no error.
-
- @param PacketData Pointer to the payload data for the packet.
- @param Type Breakpoint type
- @param Address Breakpoint address
- @param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
-
- @retval 1 Success
- @retval {other} Particular error code
-
-**/
-UINTN
-ParseBreakpointPacket (
- IN CHAR8 *PacketData,
- OUT UINTN *Type,
- OUT UINTN *Address,
- OUT UINTN *Length
- )
-{
- CHAR8 AddressBuffer[MAX_ADDR_SIZE];
- CHAR8 *AddressBufferPtr;
- CHAR8 *PacketDataPtr;
-
- PacketDataPtr = &PacketData[1];
- AddressBufferPtr = AddressBuffer;
-
- *Type = AsciiStrHexToUintn (PacketDataPtr);
-
- //Breakpoint/watchpoint type should be between 0 to 4
- if (*Type > 4) {
- return 22; //EINVAL: Invalid argument.
- }
-
- //Skip ',' in the buffer.
- while (*PacketDataPtr++ != ',');
-
- //Parse Address information
- while (*PacketDataPtr != ',') {
- *AddressBufferPtr++ = *PacketDataPtr++;
- }
- *AddressBufferPtr = '\0';
-
- //Check if Address is not too long.
- if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
- return 40; //EMSGSIZE: Message size too long.
- }
-
- *Address = AsciiStrHexToUintn (AddressBuffer);
-
- PacketDataPtr++; //This skips , in the buffer
-
- //Parse Length information
- *Length = AsciiStrHexToUintn (PacketDataPtr);
-
- //Length should be 1, 2 or 4 bytes
- if (*Length > 4) {
- return 22; //EINVAL: Invalid argument
- }
-
- return 0; //0 = No error
-}
-
-
-
-/**
- Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
-
- @param SystemContext Register content at time of the exception
- @param GdbExceptionType GDB exception type
- **/
-VOID
-GdbSendTSignal (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINT8 GdbExceptionType
- )
-{
- CHAR8 TSignalBuffer[128];
- CHAR8 *TSignalPtr;
-
- TSignalPtr = &TSignalBuffer[0];
-
- //Construct TSignal packet
- *TSignalPtr++ = 'T';
-
- //
- // replace _, or previous value, with Exception type
- //
- *TSignalPtr++ = mHexToStr [GdbExceptionType >> 4];
- *TSignalPtr++ = mHexToStr [GdbExceptionType & 0x0f];
-
- ProcessorSendTSignal (SystemContext, GdbExceptionType, TSignalPtr, sizeof (TSignalBuffer) - 2);
-
- SendPacket (TSignalBuffer);
-}
-
-VOID
-GdbFWrite (
- IN UINTN Fd,
- IN CHAR8 *Data,
- IN UINTN DataSize
- )
-{
- CHAR8 Buffer[128];
-
- AsciiSPrint (Buffer, sizeof (Buffer), "Fwrite,%x,%x,%x", Fd, Data, DataSize);
- SendPacket (Buffer);
-
- for( ; ; ) {
- ReceivePacket (gInBuffer, MAX_BUF_SIZE);
-
- switch (gInBuffer[0]) {
- case 'm':
- ReadFromMemory (gInBuffer);
- break;
-
- case 'M':
- WriteToMemory (gInBuffer);
- break;
-
- case 'F':
- return;
- }
- }
-}
-
-
-VOID
-GdbFPutString (
- IN CHAR8 *String
- )
-{
- UINTN Len = AsciiStrSize (String);
-
- GdbFWrite (2, String, Len);
-}
-
-
-/**
- Exception Hanldler for GDB. It will be called for all exceptions
- registered via the gExceptionType[] array.
-
- @param ExceptionType Exception that is being processed
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-GdbExceptionHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- UINT8 GdbExceptionType;
- CHAR8 *Ptr;
-
- if (ProcessorControlC (ExceptionType, SystemContext)) {
- // We tried to process a control C handler and there is nothing to do
- return;
- }
-
- GdbExceptionType = ConvertEFItoGDBtype (ExceptionType);
- GdbSendTSignal (SystemContext, GdbExceptionType);
-
- for( ; ; ) {
- ReceivePacket (gInBuffer, MAX_BUF_SIZE);
-
- switch (gInBuffer[0]) {
- case '?':
- GdbSendTSignal (SystemContext, GdbExceptionType);
- break;
-
- case 'c':
- ContinueAtAddress (SystemContext, gInBuffer);
- return;
-
- case 'D':
- // gdb wants to disconnect so return "OK" packet since.
- SendSuccess ();
- return;
-
- case 'g':
- ReadGeneralRegisters (SystemContext);
- break;
-
- case 'G':
- WriteGeneralRegisters (SystemContext, gInBuffer);
- break;
-
- case 'H':
- //Return "OK" packet since we don't have more than one thread.
- SendSuccess ();
- break;
-
- case 'm':
- ReadFromMemory (gInBuffer);
- break;
-
- case 'M':
- WriteToMemory (gInBuffer);
- break;
-
- case 'P':
- WriteNthRegister (SystemContext, gInBuffer);
- break;
-
- //
- // Still debugging this code. Not used in Darwin
- //
- case 'q':
- // General Query Packets
- if (AsciiStrnCmp (gInBuffer, "qSupported", 10) == 0) {
- // return what we currently support, we don't parse what gdb suports
- AsciiSPrint (gOutBuffer, MAX_BUF_SIZE, "qXfer:libraries:read+;PacketSize=%d", MAX_BUF_SIZE);
- SendPacket (gOutBuffer);
- } else if (AsciiStrnCmp (gInBuffer, "qXfer:libraries:read::", 22) == 0) {
- // ‘qXfer:libraries:read::offset,length
- // gInBuffer[22] is offset string, ++Ptr is length string’
- for (Ptr = &gInBuffer[22]; *Ptr != ','; Ptr++);
-
- // Not sure if multi-radix support is required. Currently only support decimal
- QxferLibrary (AsciiStrHexToUintn (&gInBuffer[22]), AsciiStrHexToUintn (++Ptr));
- } else if (AsciiStrnCmp (gInBuffer, "qOffsets", 8) == 0) {
- AsciiSPrint (gOutBuffer, MAX_BUF_SIZE, "Text=1000;Data=f000;Bss=f000");
- SendPacket (gOutBuffer);
- } else if (AsciiStrnCmp (gInBuffer, "qAttached", 9) == 0) {
- // remote server attached to an existing process
- SendPacket ("1");
- } else {
- //Send empty packet
- SendNotSupported ();
- }
- break;
-
- case 's':
- SingleStep (SystemContext, gInBuffer);
- return;
-
- case 'z':
- RemoveBreakPoint (SystemContext, gInBuffer);
- break;
-
- case 'Z':
- InsertBreakPoint (SystemContext, gInBuffer);
- break;
-
- default:
- //Send empty packet
- SendNotSupported ();
- break;
- }
- }
-}
-
-
-
-
-
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c b/EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c
deleted file mode 100644
index f1d7f3f1098a..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c
+++ /dev/null
@@ -1,951 +0,0 @@
-/** @file
- Processor specific parts of the GDB stub
-
- Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
-
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include <GdbDebugAgent.h>
-
-//
-// Array of exception types that need to be hooked by the debugger
-// {EFI mapping, GDB mapping}
-//
-EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
- { EXCEPT_IA32_DIVIDE_ERROR, GDB_SIGFPE },
- { EXCEPT_IA32_DEBUG, GDB_SIGTRAP },
- { EXCEPT_IA32_NMI, GDB_SIGEMT },
- { EXCEPT_IA32_BREAKPOINT, GDB_SIGTRAP },
- { EXCEPT_IA32_OVERFLOW, GDB_SIGSEGV },
- { EXCEPT_IA32_BOUND, GDB_SIGSEGV },
- { EXCEPT_IA32_INVALID_OPCODE, GDB_SIGILL },
- { EXCEPT_IA32_DOUBLE_FAULT, GDB_SIGEMT },
- { EXCEPT_IA32_STACK_FAULT, GDB_SIGSEGV },
- { EXCEPT_IA32_GP_FAULT, GDB_SIGSEGV },
- { EXCEPT_IA32_PAGE_FAULT, GDB_SIGSEGV },
- { EXCEPT_IA32_FP_ERROR, GDB_SIGEMT },
- { EXCEPT_IA32_ALIGNMENT_CHECK, GDB_SIGEMT },
- { EXCEPT_IA32_MACHINE_CHECK, GDB_SIGEMT }
-};
-
-
-// The offsets of registers SystemContext.
-// The fields in the array are in the gdb ordering.
-//
-//16 regs
-UINTN gRegisterOffsets[] = {
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Eax),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ecx),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Edx),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ebx),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Esp),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ebp),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Esi),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Edi),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Eip),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Eflags),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Cs),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ss),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ds),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Es),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Fs),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Gs)
-};
-
-
-//Debug only..
-VOID
-PrintReg (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- Print ((CHAR16 *)L"EAX: %x ", SystemContext.SystemContextIa32->Eax);
- Print ((CHAR16 *)L"ECX: %x ", SystemContext.SystemContextIa32->Ecx);
- Print ((CHAR16 *)L"EDX: %x ", SystemContext.SystemContextIa32->Edx);
- Print ((CHAR16 *)L"EBX: %x ", SystemContext.SystemContextIa32->Ebx);
- Print ((CHAR16 *)L"ESP: %x ", SystemContext.SystemContextIa32->Esp);
- Print ((CHAR16 *)L"EBP: %x ", SystemContext.SystemContextIa32->Ebp);
- Print ((CHAR16 *)L"ESI: %x ", SystemContext.SystemContextIa32->Esi);
- Print ((CHAR16 *)L"EDI: %x ", SystemContext.SystemContextIa32->Edi);
- Print ((CHAR16 *)L"EIP: %x\n", SystemContext.SystemContextIa32->Eip);
- Print ((CHAR16 *)L"EFlags: %x\n", SystemContext.SystemContextIa32->Eflags);
-}
-
-//Debug only..
-VOID
-PrintDRreg (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- Print ((CHAR16 *)L"DR0: %x ", SystemContext.SystemContextIa32->Dr0);
- Print ((CHAR16 *)L"DR1: %x ", SystemContext.SystemContextIa32->Dr1);
- Print ((CHAR16 *)L"DR2: %x ", SystemContext.SystemContextIa32->Dr2);
- Print ((CHAR16 *)L"DR3: %x ", SystemContext.SystemContextIa32->Dr3);
- Print ((CHAR16 *)L"DR6: %x ", SystemContext.SystemContextIa32->Dr6);
- Print ((CHAR16 *)L"DR7: %x\n", SystemContext.SystemContextIa32->Dr7);
-}
-
-
-/**
- Return the number of entries in the gExceptionType[]
-
- @retval UINTN, the number of entries in the gExceptionType[] array.
- **/
-UINTN
-MaxEfiException (
- VOID
- )
-{
- return sizeof (gExceptionType)/sizeof (EFI_EXCEPTION_TYPE_ENTRY);
-}
-
-
-/**
- Check to see if the ISA is supported.
- ISA = Instruction Set Architecture
-
- @retval TRUE if Isa is supported,
- FALSE otherwise.
-**/
-BOOLEAN
-CheckIsa (
- IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
- )
-{
- return (BOOLEAN)(Isa == IsaIa32);
-}
-
-
-/**
- This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
- It is, by default, set to find the register pointer of the IA32 member
-
- @param SystemContext Register content at time of the exception
- @param RegNumber The register to which we want to find a pointer
- @retval the pointer to the RegNumber-th pointer
- **/
-UINTN *
-FindPointerToRegister(
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber
- )
-{
- UINT8 *TempPtr;
- TempPtr = ((UINT8 *)SystemContext.SystemContextIa32) + gRegisterOffsets[RegNumber];
- return (UINTN *)TempPtr;
-}
-
-
-/**
- Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
-
- @param SystemContext Register content at time of the exception
- @param RegNumber the number of the register that we want to read
- @param OutBufPtr pointer to the output buffer's end. the new data will be added from this point on.
- @retval the pointer to the next character of the output buffer that is available to be written on.
- **/
-CHAR8 *
-BasicReadRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *OutBufPtr
- )
-{
- UINTN RegSize;
-
- RegSize = 0;
- while (RegSize < REG_SIZE) {
- *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
- *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> RegSize) & 0xf)];
- RegSize = RegSize + 8;
- }
- return OutBufPtr;
-}
-
-
-/** ‘p n’
- Reads the n-th register's value into an output buffer and sends it as a packet
-
- @param SystemContext Register content at time of the exception
- @param InBuffer Pointer to the input buffer received from gdb server
- **/
-VOID
-EFIAPI
-ReadNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN RegNumber;
- CHAR8 OutBuffer[9]; // 1 reg=8 hex chars, and the end '\0' (escape seq)
- CHAR8 *OutBufPtr; // pointer to the output buffer
-
- RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
-
- if ((RegNumber < 0) || (RegNumber >= sizeof (gRegisterOffsets)/sizeof (UINTN))) {
- SendError (GDB_EINVALIDREGNUM);
- return;
- }
-
- OutBufPtr = OutBuffer;
- OutBufPtr = BasicReadRegister(SystemContext, RegNumber, OutBufPtr);
-
- *OutBufPtr = '\0'; // the end of the buffer
- SendPacket(OutBuffer);
-}
-
-
-/** ‘g’
- Reads the general registers into an output buffer and sends it as a packet
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-ReadGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- UINTN i;
- CHAR8 OutBuffer[129]; // 16 regs, 8 hex chars each, and the end '\0' (escape seq)
- CHAR8 *OutBufPtr; // pointer to the output buffer
-
- OutBufPtr = OutBuffer;
- for(i = 0 ; i < sizeof (gRegisterOffsets)/sizeof (UINTN) ; i++) { // there are only 16 registers to read
- OutBufPtr = BasicReadRegister(SystemContext, i, OutBufPtr);
- }
-
- *OutBufPtr = '\0'; // the end of the buffer
- SendPacket(OutBuffer);
-}
-
-
-/**
- Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
-
- @param SystemContext Register content at time of the exception
- @param RegNumber the number of the register that we want to write
- @param InBufPtr pointer to the output buffer. the new data will be extracted from the input buffer from this point on.
- @retval the pointer to the next character of the input buffer that can be used
- **/
-CHAR8 *
-BasicWriteRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *InBufPtr
- )
-{
- UINTN RegSize;
- UINTN TempValue; // the value transferred from a hex char
- UINT32 NewValue; // the new value of the RegNumber-th Register
-
- NewValue = 0;
- RegSize = 0;
- while (RegSize < REG_SIZE) {
- TempValue = HexCharToInt(*InBufPtr++);
-
- if (TempValue < 0) {
- SendError (GDB_EBADMEMDATA);
- return NULL;
- }
-
- NewValue += (TempValue << (RegSize+4));
- TempValue = HexCharToInt(*InBufPtr++);
-
- if (TempValue < 0) {
- SendError (GDB_EBADMEMDATA);
- return NULL;
- }
-
- NewValue += (TempValue << RegSize);
- RegSize = RegSize + 8;
- }
- *(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
- return InBufPtr;
-}
-
-
-/** ‘P n...=r...’
- Writes the new value of n-th register received into the input buffer to the n-th register
-
- @param SystemContext Register content at time of the exception
- @param InBuffer Ponter to the input buffer received from gdb server
- **/
-VOID
-EFIAPI
-WriteNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN RegNumber;
- CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
- CHAR8 *RegNumBufPtr;
- CHAR8 *InBufPtr; // pointer to the input buffer
-
- // find the register number to write
- InBufPtr = &InBuffer[1];
- RegNumBufPtr = RegNumBuffer;
- while (*InBufPtr != '=') {
- *RegNumBufPtr++ = *InBufPtr++;
- }
- *RegNumBufPtr = '\0';
- RegNumber = AsciiStrHexToUintn (RegNumBuffer);
-
- // check if this is a valid Register Number
- if ((RegNumber < 0) || (RegNumber >= sizeof (gRegisterOffsets)/sizeof (UINTN))) {
- SendError (GDB_EINVALIDREGNUM);
- return;
- }
- InBufPtr++; // skips the '=' character
- BasicWriteRegister (SystemContext, RegNumber, InBufPtr);
- SendSuccess();
-}
-
-
-/** ‘G XX...’
- Writes the new values received into the input buffer to the general registers
-
- @param SystemContext Register content at time of the exception
- @param InBuffer Pointer to the input buffer received from gdb server
- **/
-VOID
-EFIAPI
-WriteGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN i;
- CHAR8 *InBufPtr; /// pointer to the input buffer
-
- // check to see if the buffer is the right size which is
- // 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 129
- if (AsciiStrLen(InBuffer) != 129) { // 16 regs, 8 hex chars each, and the end '\0' (escape seq)
- //Bad message. Message is not the right length
- SendError (GDB_EBADBUFSIZE);
- return;
- }
-
- InBufPtr = &InBuffer[1];
-
- // Read the new values for the registers from the input buffer to an array, NewValueArray.
- // The values in the array are in the gdb ordering
- for(i=0; i < sizeof (gRegisterOffsets)/sizeof (UINTN); i++) { // there are only 16 registers to write
- InBufPtr = BasicWriteRegister(SystemContext, i, InBufPtr);
- }
-
- SendSuccess();
-}
-
-/** ‘c [addr ]’
- Continue. addr is Address to resume. If addr is omitted, resume at current
- Address.
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-ContinueAtAddress (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- if (PacketData[1] != '\0') {
- SystemContext.SystemContextIa32->Eip = AsciiStrHexToUintn (&PacketData[1]);
- }
-}
-
-
-/** ‘s [addr ]’
- Single step. addr is the Address at which to resume. If addr is omitted, resume
- at same Address.
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-SingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- SendNotSupported();
-}
-
-
-/**
- Returns breakpoint data address from DR0-DR3 based on the input breakpoint number
-
- @param SystemContext Register content at time of the exception
- @param BreakpointNumber Breakpoint number
-
- @retval Address Data address from DR0-DR3 based on the breakpoint number.
-
-**/
-UINTN
-GetBreakpointDataAddress (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN BreakpointNumber
- )
-{
- UINTN Address;
-
- if (BreakpointNumber == 1) {
- Address = SystemContext.SystemContextIa32->Dr0;
- } else if (BreakpointNumber == 2) {
- Address = SystemContext.SystemContextIa32->Dr1;
- } else if (BreakpointNumber == 3) {
- Address = SystemContext.SystemContextIa32->Dr2;
- } else if (BreakpointNumber == 4) {
- Address = SystemContext.SystemContextIa32->Dr3;
- } else {
- Address = 0;
- }
-
- return Address;
-}
-
-
-/**
- Returns currently detected breakpoint value based on the register DR6 B0-B3 field.
- If no breakpoint is detected then it returns 0.
-
- @param SystemContext Register content at time of the exception
-
- @retval {1-4} Currently detected breakpoint value
- @retval 0 No breakpoint detected.
-
-**/
-UINTN
-GetBreakpointDetected (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- IA32_DR6 Dr6;
- UINTN BreakpointNumber;
-
- Dr6.UintN = SystemContext.SystemContextIa32->Dr6;
-
- if (Dr6.Bits.B0 == 1) {
- BreakpointNumber = 1;
- } else if (Dr6.Bits.B1 == 1) {
- BreakpointNumber = 2;
- } else if (Dr6.Bits.B2 == 1) {
- BreakpointNumber = 3;
- } else if (Dr6.Bits.B3 == 1) {
- BreakpointNumber = 4;
- } else {
- BreakpointNumber = 0; //No breakpoint detected
- }
-
- return BreakpointNumber;
-}
-
-
-/**
- Returns Breakpoint type (InstructionExecution, DataWrite, DataRead or DataReadWrite)
- based on the Breakpoint number
-
- @param SystemContext Register content at time of the exception
- @param BreakpointNumber Breakpoint number
-
- @retval BREAK_TYPE Breakpoint type value read from register DR7 RWn field
- For unknown value, it returns NotSupported.
-
-**/
-BREAK_TYPE
-GetBreakpointType (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN BreakpointNumber
- )
-{
- IA32_DR7 Dr7;
- BREAK_TYPE Type = NotSupported; //Default is NotSupported type
-
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (BreakpointNumber == 1) {
- Type = (BREAK_TYPE) Dr7.Bits.RW0;
- } else if (BreakpointNumber == 2) {
- Type = (BREAK_TYPE) Dr7.Bits.RW1;
- } else if (BreakpointNumber == 3) {
- Type = (BREAK_TYPE) Dr7.Bits.RW2;
- } else if (BreakpointNumber == 4) {
- Type = (BREAK_TYPE) Dr7.Bits.RW3;
- }
-
- return Type;
-}
-
-
-/**
- Parses Length and returns the length which DR7 LENn field accepts.
- For example: If we receive 1-Byte length then we should return 0.
- Zero gets written to DR7 LENn field.
-
- @param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
-
- @retval Length Appropriate converted values which DR7 LENn field accepts.
-
-**/
-UINTN
-ConvertLengthData (
- IN UINTN Length
- )
-{
- if (Length == 1) { //1-Byte length
- return 0;
- } else if (Length == 2) { //2-Byte length
- return 1;
- } else if (Length == 4) { //4-Byte length
- return 3;
- } else { //Undefined or 8-byte length
- return 2;
- }
-}
-
-
-/**
- Finds the next free debug register. If all the registers are occupied then
- EFI_OUT_OF_RESOURCES is returned.
-
- @param SystemContext Register content at time of the exception
- @param Register Register value (0 - 3 for the first free debug register)
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-FindNextFreeDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- OUT UINTN *Register
- )
-{
- IA32_DR7 Dr7;
-
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (Dr7.Bits.G0 == 0) {
- *Register = 0;
- } else if (Dr7.Bits.G1 == 0) {
- *Register = 1;
- } else if (Dr7.Bits.G2 == 0) {
- *Register = 2;
- } else if (Dr7.Bits.G3 == 0) {
- *Register = 3;
- } else {
- return EFI_OUT_OF_RESOURCES;
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Enables the debug register. Writes Address value to appropriate DR0-3 register.
- Sets LENn, Gn, RWn bits in DR7 register.
-
- @param SystemContext Register content at time of the exception
- @param Register Register value (0 - 3)
- @param Address Breakpoint address value
- @param Type Breakpoint type (Instruction, Data write, Data read
- or write etc.)
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-EnableDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Register,
- IN UINTN Address,
- IN UINTN Length,
- IN UINTN Type
- )
-{
- IA32_DR7 Dr7;
-
- //Convert length data
- Length = ConvertLengthData (Length);
-
- //For Instruction execution, length should be 0
- //(Ref. Intel reference manual 18.2.4)
- if ((Type == 0) && (Length != 0)) {
- return EFI_INVALID_PARAMETER;
- }
-
- //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
- //software breakpoint. We should send empty packet in both these cases.
- if ((Type == (BREAK_TYPE)DataRead) ||
- (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
- return EFI_UNSUPPORTED;
- }
-
- //Read DR7 so appropriate Gn, RWn and LENn bits can be modified.
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (Register == 0) {
- SystemContext.SystemContextIa32->Dr0 = Address;
- Dr7.Bits.G0 = 1;
- Dr7.Bits.RW0 = Type;
- Dr7.Bits.LEN0 = Length;
- } else if (Register == 1) {
- SystemContext.SystemContextIa32->Dr1 = Address;
- Dr7.Bits.G1 = 1;
- Dr7.Bits.RW1 = Type;
- Dr7.Bits.LEN1 = Length;
- } else if (Register == 2) {
- SystemContext.SystemContextIa32->Dr2 = Address;
- Dr7.Bits.G2 = 1;
- Dr7.Bits.RW2 = Type;
- Dr7.Bits.LEN2 = Length;
- } else if (Register == 3) {
- SystemContext.SystemContextIa32->Dr3 = Address;
- Dr7.Bits.G3 = 1;
- Dr7.Bits.RW3 = Type;
- Dr7.Bits.LEN3 = Length;
- } else {
- return EFI_INVALID_PARAMETER;
- }
-
- //Update Dr7 with appropriate Gn, RWn and LENn bits
- SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Returns register number 0 - 3 for the maching debug register.
- This function compares incoming Address, Type, Length and
- if there is a match then it returns the appropriate register number.
- In case of mismatch, function returns EFI_NOT_FOUND message.
-
- @param SystemContext Register content at time of the exception
- @param Address Breakpoint address value
- @param Length Breakpoint length value
- @param Type Breakpoint type (Instruction, Data write,
- Data read or write etc.)
- @param Register Register value to be returned
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-FindMatchingDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Address,
- IN UINTN Length,
- IN UINTN Type,
- OUT UINTN *Register
- )
-{
- IA32_DR7 Dr7;
-
- //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
- //software breakpoint. We should send empty packet in both these cases.
- if ((Type == (BREAK_TYPE)DataRead) ||
- (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
- return EFI_UNSUPPORTED;
- }
-
- //Convert length data
- Length = ConvertLengthData(Length);
-
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if ((Dr7.Bits.G0 == 1) &&
- (Dr7.Bits.LEN0 == Length) &&
- (Dr7.Bits.RW0 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr0)) {
- *Register = 0;
- } else if ((Dr7.Bits.G1 == 1) &&
- (Dr7.Bits.LEN1 == Length) &&
- (Dr7.Bits.RW1 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr1)) {
- *Register = 1;
- } else if ((Dr7.Bits.G2 == 1) &&
- (Dr7.Bits.LEN2 == Length) &&
- (Dr7.Bits.RW2 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr2)) {
- *Register = 2;
- } else if ((Dr7.Bits.G3 == 1) &&
- (Dr7.Bits.LEN3 == Length) &&
- (Dr7.Bits.RW3 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr3)) {
- *Register = 3;
- } else {
- Print ((CHAR16 *)L"No match found..\n");
- return EFI_NOT_FOUND;
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Disables the particular debug register.
-
- @param SystemContext Register content at time of the exception
- @param Register Register to be disabled
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-DisableDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Register
- )
-{
- IA32_DR7 Dr7;
- UINTN Address = 0;
-
- //Read DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (Register == 0) {
- SystemContext.SystemContextIa32->Dr0 = Address;
- Dr7.Bits.G0 = 0;
- Dr7.Bits.RW0 = 0;
- Dr7.Bits.LEN0 = 0;
- } else if (Register == 1) {
- SystemContext.SystemContextIa32->Dr1 = Address;
- Dr7.Bits.G1 = 0;
- Dr7.Bits.RW1 = 0;
- Dr7.Bits.LEN1 = 0;
- } else if (Register == 2) {
- SystemContext.SystemContextIa32->Dr2 = Address;
- Dr7.Bits.G2 = 0;
- Dr7.Bits.RW2 = 0;
- Dr7.Bits.LEN2 = 0;
- } else if (Register == 3) {
- SystemContext.SystemContextIa32->Dr3 = Address;
- Dr7.Bits.G3 = 0;
- Dr7.Bits.RW3 = 0;
- Dr7.Bits.LEN3 = 0;
- } else {
- return EFI_INVALID_PARAMETER;
- }
-
- //Update DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
- SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
-
- return EFI_SUCCESS;
-}
-
-
-/**
- ‘Z1, [addr], [length]’
- ‘Z2, [addr], [length]’
- ‘Z3, [addr], [length]’
- ‘Z4, [addr], [length]’
-
- Insert hardware breakpoint/watchpoint at address addr of size length
-
- @param SystemContext Register content at time of the exception
- @param *PacketData Pointer to the Payload data for the packet
-
-**/
-VOID
-EFIAPI
-InsertBreakPoint (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- UINTN Type;
- UINTN Address;
- UINTN Length;
- UINTN Register;
- EFI_STATUS Status;
- BREAK_TYPE BreakType = NotSupported;
- UINTN ErrorCode;
-
- ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
- if (ErrorCode > 0) {
- SendError ((UINT8)ErrorCode);
- return;
- }
-
- switch (Type) {
-
- case 0: //Software breakpoint
- BreakType = SoftwareBreakpoint;
- break;
-
- case 1: //Hardware breakpoint
- BreakType = InstructionExecution;
- break;
-
- case 2: //Write watchpoint
- BreakType = DataWrite;
- break;
-
- case 3: //Read watchpoint
- BreakType = DataRead;
- break;
-
- case 4: //Access watchpoint
- BreakType = DataReadWrite;
- break;
-
- default :
- Print ((CHAR16 *)L"Insert breakpoint default: %x\n", Type);
- SendError (GDB_EINVALIDBRKPOINTTYPE);
- return;
- }
-
- // Find next free debug register
- Status = FindNextFreeDebugRegister (SystemContext, &Register);
- if (EFI_ERROR(Status)) {
- Print ((CHAR16 *)L"No space left on device\n");
- SendError (GDB_ENOSPACE);
- return;
- }
-
- // Write Address, length data at particular DR register
- Status = EnableDebugRegister (SystemContext, Register, Address, Length, (UINTN)BreakType);
- if (EFI_ERROR(Status)) {
- if (Status == EFI_UNSUPPORTED) {
- SendNotSupported();
- return;
- }
-
- SendError (GDB_EINVALIDARG);
- return;
- }
-
- SendSuccess ();
-}
-
-
-/**
- ‘z1, [addr], [length]’
- ‘z2, [addr], [length]’
- ‘z3, [addr], [length]’
- ‘z4, [addr], [length]’
-
- Remove hardware breakpoint/watchpoint at address addr of size length
-
- @param *PacketData Pointer to the Payload data for the packet
-
-**/
-VOID
-EFIAPI
-RemoveBreakPoint (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- UINTN Type;
- UINTN Address;
- UINTN Length;
- UINTN Register;
- BREAK_TYPE BreakType = NotSupported;
- EFI_STATUS Status;
- UINTN ErrorCode;
-
- //Parse breakpoint packet data
- ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
- if (ErrorCode > 0) {
- SendError ((UINT8)ErrorCode);
- return;
- }
-
- switch (Type) {
-
- case 0: //Software breakpoint
- BreakType = SoftwareBreakpoint;
- break;
-
- case 1: //Hardware breakpoint
- BreakType = InstructionExecution;
- break;
-
- case 2: //Write watchpoint
- BreakType = DataWrite;
- break;
-
- case 3: //Read watchpoint
- BreakType = DataRead;
- break;
-
- case 4: //Access watchpoint
- BreakType = DataReadWrite;
- break;
-
- default :
- SendError (GDB_EINVALIDBRKPOINTTYPE);
- return;
- }
-
- //Find matching debug register
- Status = FindMatchingDebugRegister (SystemContext, Address, Length, (UINTN)BreakType, &Register);
- if (EFI_ERROR(Status)) {
- if (Status == EFI_UNSUPPORTED) {
- SendNotSupported();
- return;
- }
-
- SendError (GDB_ENOSPACE);
- return;
- }
-
- //Remove breakpoint
- Status = DisableDebugRegister(SystemContext, Register);
- if (EFI_ERROR(Status)) {
- SendError (GDB_EINVALIDARG);
- return;
- }
-
- SendSuccess ();
-}
-
-
-/**
- Initialize debug agent.
-
- This function is used to set up debug environment to support source level debugging.
- If certain Debug Agent Library instance has to save some private data in the stack,
- this function must work on the mode that doesn't return to the caller, then
- the caller needs to wrap up all rest of logic after InitializeDebugAgent() into one
- function and pass it into InitializeDebugAgent(). InitializeDebugAgent() is
- responsible to invoke the passing-in function at the end of InitializeDebugAgent().
-
- If the parameter Function is not NULL, Debug Agent Library instance will invoke it by
- passing in the Context to be its parameter.
-
- If Function() is NULL, Debug Agent Library instance will return after setup debug
- environment.
-
- @param[in] InitFlag Init flag is used to decide the initialize process.
- @param[in] Context Context needed according to InitFlag; it was optional.
- @param[in] Function Continue function called by debug agent library; it was
- optional.
-
-**/
-VOID
-EFIAPI
-InitializeDebugAgent (
- IN UINT32 InitFlag,
- IN VOID *Context, OPTIONAL
- IN DEBUG_AGENT_CONTINUE Function OPTIONAL
- )
-{
- // BugBug: Add the code to build an GDT/IDT
-
- if (Function != NULL) {
- Function (Context);
- }
-}
-
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c b/EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c
deleted file mode 100644
index cbe50d78ec09..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c
+++ /dev/null
@@ -1,963 +0,0 @@
-/** @file
- Processor specific parts of the GDB stub
-
- Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
-
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include <GdbStubInternal.h>
-
-//
-// Array of exception types that need to be hooked by the debugger
-//
-EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
- { EXCEPT_X64_DIVIDE_ERROR, GDB_SIGFPE },
- { EXCEPT_X64_DEBUG, GDB_SIGTRAP },
- { EXCEPT_X64_NMI, GDB_SIGEMT },
- { EXCEPT_X64_BREAKPOINT, GDB_SIGTRAP },
- { EXCEPT_X64_OVERFLOW, GDB_SIGSEGV },
- { EXCEPT_X64_BOUND, GDB_SIGSEGV },
- { EXCEPT_X64_INVALID_OPCODE, GDB_SIGILL },
- { EXCEPT_X64_DOUBLE_FAULT, GDB_SIGEMT },
- { EXCEPT_X64_STACK_FAULT, GDB_SIGSEGV },
- { EXCEPT_X64_GP_FAULT, GDB_SIGSEGV },
- { EXCEPT_X64_PAGE_FAULT, GDB_SIGSEGV },
- { EXCEPT_X64_FP_ERROR, GDB_SIGEMT },
- { EXCEPT_X64_ALIGNMENT_CHECK, GDB_SIGEMT },
- { EXCEPT_X64_MACHINE_CHECK, GDB_SIGEMT }
-};
-
-
-// The offsets of registers SystemContextX64.
-// The fields in the array are in the gdb ordering.
-// HAVE TO DOUBLE-CHECK THE ORDER of the 24 regs
-//
-UINTN gRegisterOffsets[] = {
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rax),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rcx),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rdx),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rbx),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rsp),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rbp),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rsi),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rdi),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rip),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rflags),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Cs),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Ss),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Ds),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Es),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Fs),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Gs),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R8),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R9),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R10),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R11),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R12),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R13),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R14),
- OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R15)
-};
-
-
-/**
- Return the number of entries in the gExceptionType[]
-
- @retval UINTN, the number of entries in the gExceptionType[] array.
- **/
-UINTN
-MaxEfiException (
- VOID
- )
-{
- return sizeof (gExceptionType)/sizeof (EFI_EXCEPTION_TYPE_ENTRY);
-}
-
-
-/**
- Return the number of entries in the gRegisters[]
-
- @retval UINTN, the number of entries (registers) in the gRegisters[] array.
- **/
-UINTN
-MaxRegisterCount (
- VOID
- )
-{
- return sizeof (gRegisterOffsets)/sizeof (UINTN);
-}
-
-
-/**
- Check to see if the ISA is supported.
- ISA = Instruction Set Architecture
-
- @retval TRUE if Isa is supported
-**/
-BOOLEAN
-CheckIsa (
- IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
- )
-{
- return (BOOLEAN)(Isa == IsaX64);
-}
-
-
-/**
- This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
- It is, by default, set to find the register pointer of the X64 member
- @param SystemContext Register content at time of the exception
- @param RegNumber The register to which we want to find a pointer
- @retval the pointer to the RegNumber-th pointer
- **/
-UINTN *
-FindPointerToRegister(
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber
- )
-{
- UINT8 *TempPtr;
- TempPtr = ((UINT8 *)SystemContext.SystemContextX64) + gRegisterOffsets[RegNumber];
- return (UINTN *)TempPtr;
-}
-
-
-/**
- Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
- @param SystemContext Register content at time of the exception
- @param RegNumber the number of the register that we want to read
- @param OutBufPtr pointer to the output buffer's end. the new data will be added from this point on.
- @retval the pointer to the next character of the output buffer that is available to be written on.
- **/
-CHAR8 *
-BasicReadRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *OutBufPtr
- )
-{
- UINTN RegSize;
-
- RegSize = 0;
- while (RegSize < 64) {
- *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
- *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> RegSize) & 0xf)];
- RegSize = RegSize + 8;
- }
- return OutBufPtr;
-}
-
-
-/** ‘p n’
- Reads the n-th register's value into an output buffer and sends it as a packet
- @param SystemContext Register content at time of the exception
- @param InBuffer Pointer to the input buffer received from gdb server
- **/
-VOID
-ReadNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN RegNumber;
- CHAR8 OutBuffer[17]; // 1 reg=16 hex chars, and the end '\0' (escape seq)
- CHAR8 *OutBufPtr; // pointer to the output buffer
-
- RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
-
- if ((RegNumber < 0) || (RegNumber >= MaxRegisterCount())) {
- SendError (GDB_EINVALIDREGNUM);
- return;
- }
-
- OutBufPtr = OutBuffer;
- OutBufPtr = BasicReadRegister(SystemContext, RegNumber, OutBufPtr);
-
- *OutBufPtr = '\0'; // the end of the buffer
- SendPacket (OutBuffer);
-}
-
-
-/** ‘g’
- Reads the general registers into an output buffer and sends it as a packet
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-ReadGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- UINTN i;
- CHAR8 OutBuffer[385]; // 24 regs, 16 hex chars each, and the end '\0' (escape seq)
- CHAR8 *OutBufPtr; // pointer to the output buffer
-
- OutBufPtr = OutBuffer;
- for(i = 0 ; i < MaxRegisterCount() ; i++) { // there are only 24 registers to read
- OutBufPtr = BasicReadRegister(SystemContext, i, OutBufPtr);
- }
-
- *OutBufPtr = '\0'; // the end of the buffer
- SendPacket (OutBuffer);
-}
-
-
-/**
- Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
-
- @param SystemContext Register content at time of the exception
- @param RegNumber the number of the register that we want to write
- @param InBufPtr pointer to the output buffer. the new data will be extracted from the input buffer from this point on.
- @retval the pointer to the next character of the input buffer that can be used
- **/
-CHAR8 *
-BasicWriteRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN RegNumber,
- IN CHAR8 *InBufPtr
- )
-{
- UINTN RegSize;
- UINTN TempValue; // the value transferred from a hex char
- UINT64 NewValue; // the new value of the RegNumber-th Register
-
- NewValue = 0;
- RegSize = 0;
- while (RegSize < 64) {
- TempValue = HexCharToInt(*InBufPtr++);
-
- if (TempValue < 0) {
- SendError (GDB_EBADMEMDATA);
- return NULL;
- }
-
- NewValue += (TempValue << (RegSize+4));
- TempValue = HexCharToInt(*InBufPtr++);
-
- if (TempValue < 0) {
- SendError (GDB_EBADMEMDATA);
- return NULL;
- }
-
- NewValue += (TempValue << RegSize);
- RegSize = RegSize + 8;
- }
- *(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
- return InBufPtr;
-}
-
-
-/** ‘P n...=r...’
- Writes the new value of n-th register received into the input buffer to the n-th register
-
- @param SystemContext Register content at time of the exception
- @param InBuffer Ponter to the input buffer received from gdb server
- **/
-VOID
-EFIAPI
-WriteNthRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN RegNumber;
- CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
- CHAR8 *RegNumBufPtr;
- CHAR8 *InBufPtr; // pointer to the input buffer
-
- // find the register number to write
- InBufPtr = &InBuffer[1];
- RegNumBufPtr = RegNumBuffer;
- while (*InBufPtr != '=') {
- *RegNumBufPtr++ = *InBufPtr++;
- }
- *RegNumBufPtr = '\0';
- RegNumber = AsciiStrHexToUintn (RegNumBuffer);
-
- // check if this is a valid Register Number
- if ((RegNumber < 0) || (RegNumber >= MaxRegisterCount())) {
- SendError (GDB_EINVALIDREGNUM);
- return;
- }
- InBufPtr++; // skips the '=' character
- BasicWriteRegister (SystemContext, RegNumber, InBufPtr);
- SendSuccess();
-}
-
-
-/** ‘G XX...’
- Writes the new values received into the input buffer to the general registers
-
- @param SystemContext Register content at time of the exception
- @param InBuffer Pointer to the input buffer received from gdb server
- **/
-VOID
-EFIAPI
-WriteGeneralRegisters (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *InBuffer
- )
-{
- UINTN i;
- CHAR8 *InBufPtr; /// pointer to the input buffer
-
- // check to see if the buffer is the right size which is
- // 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 385
- if (AsciiStrLen(InBuffer) != 385) { // 24 regs, 16 hex chars each, and the end '\0' (escape seq)
- //Bad message. Message is not the right length
- SendError (GDB_EBADBUFSIZE);
- return;
- }
-
- InBufPtr = &InBuffer[1];
-
- // Read the new values for the registers from the input buffer to an array, NewValueArray.
- // The values in the array are in the gdb ordering
- for(i=0; i < MaxRegisterCount(); i++) { // there are only 16 registers to write
- InBufPtr = BasicWriteRegister(SystemContext, i, InBufPtr);
- }
-
- SendSuccess();
-}
-
-
- /**
- Insert Single Step in the SystemContext
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-AddSingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- SystemContext.SystemContextX64->Rflags |= TF_BIT; //Setting the TF bit.
-}
-
-
-
-/**
- Remove Single Step in the SystemContext
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-RemoveSingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- SystemContext.SystemContextX64->Rflags &= ~TF_BIT; // clearing the TF bit.
-}
-
-
-
-/** ‘c [addr ]’
- Continue. addr is Address to resume. If addr is omitted, resume at current
- Address.
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-ContinueAtAddress (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- if (PacketData[1] != '\0') {
- SystemContext.SystemContextX64->Rip = AsciiStrHexToUintn(&PacketData[1]);
- }
-}
-
-
-/** ‘s [addr ]’
- Single step. addr is the Address at which to resume. If addr is omitted, resume
- at same Address.
-
- @param SystemContext Register content at time of the exception
- **/
-VOID
-EFIAPI
-SingleStep (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- if (PacketData[1] != '\0') {
- SystemContext.SystemContextX64->Rip = AsciiStrHexToUintn (&PacketData[1]);
- }
-
- AddSingleStep (SystemContext);
-}
-
-
-/**
- Returns breakpoint data address from DR0-DR3 based on the input breakpoint
- number
-
- @param SystemContext Register content at time of the exception
- @param BreakpointNumber Breakpoint number
-
- @retval Address Data address from DR0-DR3 based on the
- breakpoint number.
-
-**/
-UINTN
-GetBreakpointDataAddress (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN BreakpointNumber
- )
-{
- UINTN Address;
-
- if (BreakpointNumber == 1) {
- Address = SystemContext.SystemContextIa32->Dr0;
- } else if (BreakpointNumber == 2) {
- Address = SystemContext.SystemContextIa32->Dr1;
- } else if (BreakpointNumber == 3) {
- Address = SystemContext.SystemContextIa32->Dr2;
- } else if (BreakpointNumber == 4) {
- Address = SystemContext.SystemContextIa32->Dr3;
- } else {
- Address = 0;
- }
-
- return Address;
-}
-
-/**
- Returns currently detected breakpoint value based on the register
- DR6 B0-B3 field.
- If no breakpoint is detected then it returns 0.
-
- @param SystemContext Register content at time of the exception
-
- @retval {1-4} Currently detected breakpoint value
- @retval 0 No breakpoint detected.
-
-**/
-UINTN
-GetBreakpointDetected (
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- IA32_DR6 Dr6;
- UINTN BreakpointNumber;
-
- Dr6.UintN = SystemContext.SystemContextIa32->Dr6;
-
- if (Dr6.Bits.B0 == 1) {
- BreakpointNumber = 1;
- } else if (Dr6.Bits.B1 == 1) {
- BreakpointNumber = 2;
- } else if (Dr6.Bits.B2 == 1) {
- BreakpointNumber = 3;
- } else if (Dr6.Bits.B3 == 1) {
- BreakpointNumber = 4;
- } else {
- BreakpointNumber = 0; //No breakpoint detected
- }
-
- return BreakpointNumber;
-}
-
-/**
- Returns Breakpoint type (InstructionExecution, DataWrite, DataRead
- or DataReadWrite) based on the Breakpoint number
-
- @param SystemContext Register content at time of the exception
- @param BreakpointNumber Breakpoint number
-
- @retval BREAK_TYPE Breakpoint type value read from register DR7 RWn
- field. For unknown value, it returns NotSupported.
-
-**/
-BREAK_TYPE
-GetBreakpointType (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN BreakpointNumber
- )
-{
- IA32_DR7 Dr7;
- BREAK_TYPE Type = NotSupported; //Default is NotSupported type
-
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (BreakpointNumber == 1) {
- Type = (BREAK_TYPE) Dr7.Bits.RW0;
- } else if (BreakpointNumber == 2) {
- Type = (BREAK_TYPE) Dr7.Bits.RW1;
- } else if (BreakpointNumber == 3) {
- Type = (BREAK_TYPE) Dr7.Bits.RW2;
- } else if (BreakpointNumber == 4) {
- Type = (BREAK_TYPE) Dr7.Bits.RW3;
- }
-
- return Type;
-}
-
-
-/**
- Parses Length and returns the length which DR7 LENn field accepts.
- For example: If we receive 1-Byte length then we should return 0.
- Zero gets written to DR7 LENn field.
-
- @param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
-
- @retval Length Appropriate converted values which DR7 LENn field accepts.
-
-**/
-UINTN
-ConvertLengthData (
- IN UINTN Length
- )
-{
- if (Length == 1) { //1-Byte length
- return 0;
- } else if (Length == 2) { //2-Byte length
- return 1;
- } else if (Length == 4) { //4-Byte length
- return 3;
- } else { //Undefined or 8-byte length
- return 2;
- }
-}
-
-
-/**
- Finds the next free debug register. If all the registers are occupied then
- EFI_OUT_OF_RESOURCES is returned.
-
- @param SystemContext Register content at time of the exception
- @param Register Register value (0 - 3 for the first free debug register)
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-FindNextFreeDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- OUT UINTN *Register
- )
-{
- IA32_DR7 Dr7;
-
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (Dr7.Bits.G0 == 0) {
- *Register = 0;
- } else if (Dr7.Bits.G1 == 0) {
- *Register = 1;
- } else if (Dr7.Bits.G2 == 0) {
- *Register = 2;
- } else if (Dr7.Bits.G3 == 0) {
- *Register = 3;
- } else {
- return EFI_OUT_OF_RESOURCES;
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Enables the debug register. Writes Address value to appropriate DR0-3 register.
- Sets LENn, Gn, RWn bits in DR7 register.
-
- @param SystemContext Register content at time of the exception
- @param Register Register value (0 - 3)
- @param Address Breakpoint address value
- @param Type Breakpoint type (Instruction, Data write,
- Data read or write etc.)
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-EnableDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Register,
- IN UINTN Address,
- IN UINTN Length,
- IN UINTN Type
- )
-{
- IA32_DR7 Dr7;
-
- //Convert length data
- Length = ConvertLengthData (Length);
-
- //For Instruction execution, length should be 0
- //(Ref. Intel reference manual 18.2.4)
- if ((Type == 0) && (Length != 0)) {
- return EFI_INVALID_PARAMETER;
- }
-
- //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
- //software breakpoint. We should send empty packet in both these cases.
- if ((Type == (BREAK_TYPE)DataRead) ||
- (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
- return EFI_UNSUPPORTED;
- }
-
- //Read DR7 so appropriate Gn, RWn and LENn bits can be modified.
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (Register == 0) {
- SystemContext.SystemContextIa32->Dr0 = Address;
- Dr7.Bits.G0 = 1;
- Dr7.Bits.RW0 = Type;
- Dr7.Bits.LEN0 = Length;
- } else if (Register == 1) {
- SystemContext.SystemContextIa32->Dr1 = Address;
- Dr7.Bits.G1 = 1;
- Dr7.Bits.RW1 = Type;
- Dr7.Bits.LEN1 = Length;
- } else if (Register == 2) {
- SystemContext.SystemContextIa32->Dr2 = Address;
- Dr7.Bits.G2 = 1;
- Dr7.Bits.RW2 = Type;
- Dr7.Bits.LEN2 = Length;
- } else if (Register == 3) {
- SystemContext.SystemContextIa32->Dr3 = Address;
- Dr7.Bits.G3 = 1;
- Dr7.Bits.RW3 = Type;
- Dr7.Bits.LEN3 = Length;
- } else {
- return EFI_INVALID_PARAMETER;
- }
-
- //Update Dr7 with appropriate Gn, RWn and LENn bits
- SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Returns register number 0 - 3 for the maching debug register.
- This function compares incoming Address, Type, Length and
- if there is a match then it returns the appropriate register number.
- In case of mismatch, function returns EFI_NOT_FOUND message.
-
- @param SystemContext Register content at time of the exception
- @param Address Breakpoint address value
- @param Length Breakpoint length value
- @param Type Breakpoint type (Instruction, Data write, Data read
- or write etc.)
- @param Register Register value to be returned
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-FindMatchingDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Address,
- IN UINTN Length,
- IN UINTN Type,
- OUT UINTN *Register
- )
-{
- IA32_DR7 Dr7;
-
- //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
- //software breakpoint. We should send empty packet in both these cases.
- if ((Type == (BREAK_TYPE)DataRead) ||
- (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
- return EFI_UNSUPPORTED;
- }
-
- //Convert length data
- Length = ConvertLengthData(Length);
-
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if ((Dr7.Bits.G0 == 1) &&
- (Dr7.Bits.LEN0 == Length) &&
- (Dr7.Bits.RW0 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr0)) {
- *Register = 0;
- } else if ((Dr7.Bits.G1 == 1) &&
- (Dr7.Bits.LEN1 == Length) &&
- (Dr7.Bits.RW1 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr1)) {
- *Register = 1;
- } else if ((Dr7.Bits.G2 == 1) &&
- (Dr7.Bits.LEN2 == Length) &&
- (Dr7.Bits.RW2 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr2)) {
- *Register = 2;
- } else if ((Dr7.Bits.G3 == 1) &&
- (Dr7.Bits.LEN3 == Length) &&
- (Dr7.Bits.RW3 == Type) &&
- (Address == SystemContext.SystemContextIa32->Dr3)) {
- *Register = 3;
- } else {
- Print ((CHAR16 *)L"No match found..\n");
- return EFI_NOT_FOUND;
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Disables the particular debug register.
-
- @param SystemContext Register content at time of the exception
- @param Register Register to be disabled
-
- @retval EFI_STATUS Appropriate status value.
-
-**/
-EFI_STATUS
-DisableDebugRegister (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN UINTN Register
- )
-{
- IA32_DR7 Dr7;
- UINTN Address = 0;
-
- //Read DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
- Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
-
- if (Register == 0) {
- SystemContext.SystemContextIa32->Dr0 = Address;
- Dr7.Bits.G0 = 0;
- Dr7.Bits.RW0 = 0;
- Dr7.Bits.LEN0 = 0;
- } else if (Register == 1) {
- SystemContext.SystemContextIa32->Dr1 = Address;
- Dr7.Bits.G1 = 0;
- Dr7.Bits.RW1 = 0;
- Dr7.Bits.LEN1 = 0;
- } else if (Register == 2) {
- SystemContext.SystemContextIa32->Dr2 = Address;
- Dr7.Bits.G2 = 0;
- Dr7.Bits.RW2 = 0;
- Dr7.Bits.LEN2 = 0;
- } else if (Register == 3) {
- SystemContext.SystemContextIa32->Dr3 = Address;
- Dr7.Bits.G3 = 0;
- Dr7.Bits.RW3 = 0;
- Dr7.Bits.LEN3 = 0;
- } else {
- return EFI_INVALID_PARAMETER;
- }
-
- //Update DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
- SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
-
- return EFI_SUCCESS;
-}
-
-/**
- ‘Z1, [addr], [length]’
- ‘Z2, [addr], [length]’
- ‘Z3, [addr], [length]’
- ‘Z4, [addr], [length]’
-
- Insert hardware breakpoint/watchpoint at address addr of size length
-
- @param SystemContext Register content at time of the exception
- @param *PacketData Pointer to the Payload data for the packet
-
-**/
-VOID
-EFIAPI
-InsertBreakPoint (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- UINTN Type;
- UINTN Address;
- UINTN Length;
- UINTN Register;
- EFI_STATUS Status;
- BREAK_TYPE BreakType = NotSupported;
- UINTN ErrorCode;
-
- ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
- if (ErrorCode > 0) {
- SendError ((UINT8)ErrorCode);
- return;
- }
-
- switch (Type) {
-
- case 0: //Software breakpoint
- BreakType = SoftwareBreakpoint;
- break;
-
- case 1: //Hardware breakpoint
- BreakType = InstructionExecution;
- break;
-
- case 2: //Write watchpoint
- BreakType = DataWrite;
- break;
-
- case 3: //Read watchpoint
- BreakType = DataRead;
- break;
-
- case 4: //Access watchpoint
- BreakType = DataReadWrite;
- break;
-
- default :
- Print ((CHAR16 *)L"Insert breakpoint default: %x\n", Type);
- SendError (GDB_EINVALIDBRKPOINTTYPE);
- return;
- }
-
- // Find next free debug register
- Status = FindNextFreeDebugRegister (SystemContext, &Register);
- if (EFI_ERROR(Status)) {
- Print ((CHAR16 *)L"No space left on device\n");
- SendError (GDB_ENOSPACE);
- return;
- }
-
- // Write Address, length data at particular DR register
- Status = EnableDebugRegister (SystemContext, Register, Address, Length, (UINTN)BreakType);
- if (EFI_ERROR(Status)) {
-
- if (Status == EFI_UNSUPPORTED) {
- Print ((CHAR16 *)L"Not supported\n");
- SendNotSupported();
- return;
- }
-
- Print ((CHAR16 *)L"Invalid argument\n");
- SendError (GDB_EINVALIDARG);
- return;
- }
-
- SendSuccess ();
-}
-
-
-/**
- ‘z1, [addr], [length]’
- ‘z2, [addr], [length]’
- ‘z3, [addr], [length]’
- ‘z4, [addr], [length]’
-
- Remove hardware breakpoint/watchpoint at address addr of size length
-
- @param *PacketData Pointer to the Payload data for the packet
-
-**/
-VOID
-EFIAPI
-RemoveBreakPoint (
- IN EFI_SYSTEM_CONTEXT SystemContext,
- IN CHAR8 *PacketData
- )
-{
- UINTN Type;
- UINTN Address;
- UINTN Length;
- UINTN Register;
- BREAK_TYPE BreakType = NotSupported;
- EFI_STATUS Status;
- UINTN ErrorCode;
-
- //Parse breakpoint packet data
- ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
- if (ErrorCode > 0) {
- SendError ((UINT8)ErrorCode);
- return;
- }
-
- switch (Type) {
-
- case 0: //Software breakpoint
- BreakType = SoftwareBreakpoint;
- break;
-
- case 1: //Hardware breakpoint
- BreakType = InstructionExecution;
- break;
-
- case 2: //Write watchpoint
- BreakType = DataWrite;
- break;
-
- case 3: //Read watchpoint
- BreakType = DataRead;
- break;
-
- case 4: //Access watchpoint
- BreakType = DataReadWrite;
- break;
-
- default :
- SendError (GDB_EINVALIDBRKPOINTTYPE);
- return;
- }
-
- //Find matching debug register
- Status = FindMatchingDebugRegister (SystemContext, Address, Length, (UINTN)BreakType, &Register);
- if (EFI_ERROR(Status)) {
-
- if (Status == EFI_UNSUPPORTED) {
- Print ((CHAR16 *)L"Not supported.\n");
- SendNotSupported();
- return;
- }
-
- Print ((CHAR16 *)L"No matching register found.\n");
- SendError (GDB_ENOSPACE);
- return;
- }
-
- //Remove breakpoint
- Status = DisableDebugRegister(SystemContext, Register);
- if (EFI_ERROR(Status)) {
- Print ((CHAR16 *)L"Invalid argument.\n");
- SendError (GDB_EINVALIDARG);
- return;
- }
-
- SendSuccess ();
-}
-
-
-VOID
-InitializeProcessor (
- VOID
- )
-{
-}
-
-BOOLEAN
-ValidateAddress (
- IN VOID *Address
- )
-{
- return TRUE;
-}
-
-BOOLEAN
-ValidateException (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- return TRUE;
-}
-
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S b/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S
deleted file mode 100644
index df1543a6d242..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S
+++ /dev/null
@@ -1,258 +0,0 @@
-#------------------------------------------------------------------------------
-#
-# Use ARMv6 instruction to operate on a single stack
-#
-# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
-#
-# This program and the accompanying materials
-# are licensed and made available under the terms and conditions of the BSD License
-# which accompanies this distribution. The full text of the license may be found at
-# http://opensource.org/licenses/bsd-license.php
-#
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-#
-#------------------------------------------------------------------------------
-
-/*
-
-This is the stack constructed by the exception handler (low address to high address)
- # R0 - IFAR is EFI_SYSTEM_CONTEXT for ARM
- Reg Offset
- === ======
- R0 0x00 # stmfd SP!,{R0-R12}
- R1 0x04
- R2 0x08
- R3 0x0c
- R4 0x10
- R5 0x14
- R6 0x18
- R7 0x1c
- R8 0x20
- R9 0x24
- R10 0x28
- R11 0x2c
- R12 0x30
- SP 0x34 # reserved via adding 0x20 (32) to the SP
- LR 0x38
- PC 0x3c
- CPSR 0x40
- DFSR 0x44
- DFAR 0x48
- IFSR 0x4c
- IFAR 0x50
-
- LR 0x54 # SVC Link register (we need to restore it)
-
- LR 0x58 # pushed by srsfd
- CPSR 0x5c
-
- */
-
-
-GCC_ASM_EXPORT(ExceptionHandlersStart)
-GCC_ASM_EXPORT(ExceptionHandlersEnd)
-GCC_ASM_EXPORT(CommonExceptionEntry)
-GCC_ASM_EXPORT(AsmCommonExceptionEntry)
-GCC_ASM_EXPORT(GdbExceptionHandler)
-
-.text
-.align 3
-
-
-//
-// This code gets copied to the ARM vector table
-// ExceptionHandlersStart - ExceptionHandlersEnd gets copied
-//
-ASM_PFX(ExceptionHandlersStart):
-
-ASM_PFX(Reset):
- b ASM_PFX(Reset)
-
-ASM_PFX(UndefinedInstruction):
- b ASM_PFX(UndefinedInstructionEntry)
-
-ASM_PFX(SoftwareInterrupt):
- b ASM_PFX(SoftwareInterruptEntry)
-
-ASM_PFX(PrefetchAbort):
- b ASM_PFX(PrefetchAbortEntry)
-
-ASM_PFX(DataAbort):
- b ASM_PFX(DataAbortEntry)
-
-ASM_PFX(ReservedException):
- b ASM_PFX(ReservedExceptionEntry)
-
-ASM_PFX(Irq):
- b ASM_PFX(Irq)
-
-ASM_PFX(Fiq):
- b ASM_PFX(FiqEntry)
-
-
-ASM_PFX(UndefinedInstructionEntry):
- sub LR, LR, #4 @ Only -2 for Thumb, adjust in CommonExceptionEntry
- srsdb #0x13! @ Store return state on SVC stack
- cpsid f,#0x13 @ Switch to SVC for common stack
- stmfd SP!,{LR} @ Store the link register for the current mode
- sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} @ Store the register state
-
- mov R0,#1 @ ExceptionType
- ldr R1,ASM_PFX(CommonExceptionEntry)
- bx R1
-
-ASM_PFX(SoftwareInterruptEntry):
- sub LR, LR, #4 @ Only -2 for Thumb, adjust in CommonExceptionEntry
- srsdb #0x13! @ Store return state on SVC stack
- cpsid f @ We are already in SVC mode
- stmfd SP!,{LR} @ Store the link register for the current mode
- sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} @ Store the register state
-
- mov R0,#2 @ ExceptionType
- ldr R1,ASM_PFX(CommonExceptionEntry)
- bx R1
-
-ASM_PFX(PrefetchAbortEntry):
- sub LR,LR,#4
- srsdb #0x13! @ Store return state on SVC stack
- cpsid f,#0x13 @ Switch to SVC for common stack
- stmfd SP!,{LR} @ Store the link register for the current mode
- sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} @ Store the register state
-
- mov R0,#3 @ ExceptionType
- ldr R1,ASM_PFX(CommonExceptionEntry)
- bx R1
-
-ASM_PFX(DataAbortEntry):
- sub LR,LR,#8
- srsdb #0x13! @ Store return state on SVC stack
- cpsid f,#0x13 @ Switch to SVC for common stack
- stmfd SP!,{LR} @ Store the link register for the current mode
- sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} @ Store the register state
-
- mov R0,#4
- ldr R1,ASM_PFX(CommonExceptionEntry)
- bx R1
-
-ASM_PFX(ReservedExceptionEntry):
- srsdb #0x13! @ Store return state on SVC stack
- cpsid f,#0x13 @ Switch to SVC for common stack
- stmfd SP!,{LR} @ Store the link register for the current mode
- sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} @ Store the register state
-
- mov R0,#5
- ldr R1,ASM_PFX(CommonExceptionEntry)
- bx R1
-
-ASM_PFX(FiqEntry):
- sub LR,LR,#4
- srsdb #0x13! @ Store return state on SVC stack
- cps #0x13 @ Switch to SVC for common stack
- stmfd SP!,{LR} @ Store the link register for the current mode
- sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} @ Store the register state
- @ Since we have already switch to SVC R8_fiq - R12_fiq
- @ never get used or saved
- mov R0,#7 @ ExceptionType
- ldr R1,ASM_PFX(CommonExceptionEntry)
- bx R1
-
-//
-// This gets patched by the C code that patches in the vector table
-//
-ASM_PFX(CommonExceptionEntry):
- .byte 0x12
- .byte 0x34
- .byte 0x56
- .byte 0x78
-
-ASM_PFX(ExceptionHandlersEnd):
-
-//
-// This code runs from CpuDxe driver loaded address. It is patched into
-// CommonExceptionEntry.
-//
-ASM_PFX(AsmCommonExceptionEntry):
- mrc p15, 0, R1, c6, c0, 2 @ Read IFAR
- str R1, [SP, #0x50] @ Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
-
- mrc p15, 0, R1, c5, c0, 1 @ Read IFSR
- str R1, [SP, #0x4c] @ Store it in EFI_SYSTEM_CONTEXT_ARM.IFSR
-
- mrc p15, 0, R1, c6, c0, 0 @ Read DFAR
- str R1, [SP, #0x48] @ Store it in EFI_SYSTEM_CONTEXT_ARM.DFAR
-
- mrc p15, 0, R1, c5, c0, 0 @ Read DFSR
- str R1, [SP, #0x44] @ Store it in EFI_SYSTEM_CONTEXT_ARM.DFSR
-
- ldr R1, [SP, #0x5c] @ srsdb saved pre-exception CPSR on the stack
- str R1, [SP, #0x40] @ Store it in EFI_SYSTEM_CONTEXT_ARM.CPSR
-
- add R2, SP, #0x38 @ Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
- and R3, R1, #0x1f @ Check CPSR to see if User or System Mode
- cmp R3, #0x1f @ if ((CPSR == 0x10) || (CPSR == 0x1df))
- cmpne R3, #0x10 @
- stmeqed R2, {lr}^ @ save unbanked lr
- @ else
- stmneed R2, {lr} @ save SVC lr
-
-
- ldr R5, [SP, #0x58] @ PC is the LR pushed by srsfd
- @ Check to see if we have to adjust for Thumb entry
- sub r4, r0, #1 @ if (ExceptionType == 1 || ExceptionType ==2)) {
- cmp r4, #1 @ // UND & SVC have differnt LR adjust for Thumb
- bhi NoAdjustNeeded
-
- tst r1, #0x20 @ if ((CPSR & T)) == T) { // Thumb Mode on entry
- addne R5, R5, #2 @ PC += 2@
- str R5,[SP,#0x58] @ Update LR value pused by srsfd
-
-NoAdjustNeeded:
-
- str R5, [SP, #0x3c] @ Store it in EFI_SYSTEM_CONTEXT_ARM.PC
-
- sub R1, SP, #0x60 @ We pused 0x60 bytes on the stack
- str R1, [SP, #0x34] @ Store it in EFI_SYSTEM_CONTEXT_ARM.SP
-
- @ R0 is ExceptionType
- mov R1,SP @ R1 is SystemContext
-
-/*
-VOID
-EFIAPI
-GdbExceptionHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType, R0
- IN OUT EFI_SYSTEM_CONTEXT SystemContext R1
- )
-
-*/
- blx ASM_PFX(GdbExceptionHandler) @ Call exception handler
-
- ldr R1,[SP,#0x3c] @ EFI_SYSTEM_CONTEXT_ARM.PC
- str R1,[SP,#0x58] @ Store it back to srsfd stack slot so it can be restored
-
- ldr R1,[SP,#0x40] @ EFI_SYSTEM_CONTEXT_ARM.CPSR
- str R1,[SP,#0x5c] @ Store it back to srsfd stack slot so it can be restored
-
- add R3, SP, #0x54 @ Make R3 point to SVC LR saved on entry
- add R2, SP, #0x38 @ Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
- and R1, R1, #0x1f @ Check to see if User or System Mode
- cmp R1, #0x1f @ if ((CPSR == 0x10) || (CPSR == 0x1f))
- cmpne R1, #0x10 @
- ldmeqed R2, {lr}^ @ restore unbanked lr
- @ else
- ldmneed R3, {lr} @ restore SVC lr, via ldmfd SP!, {LR}
-
- ldmfd SP!,{R0-R12} @ Restore general purpose registers
- @ Exception handler can not change SP
-
- add SP,SP,#0x20 @ Clear out the remaining stack space
- ldmfd SP!,{LR} @ restore the link register for this context
- rfefd SP! @ return from exception via srsfd stack slot
-
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm b/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm
deleted file mode 100644
index 611e83d7dae4..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm
+++ /dev/null
@@ -1,259 +0,0 @@
-//------------------------------------------------------------------------------
-//
-// Use ARMv6 instruction to operate on a single stack
-//
-// Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
-//
-// This program and the accompanying materials
-// are licensed and made available under the terms and conditions of the BSD License
-// which accompanies this distribution. The full text of the license may be found at
-// http://opensource.org/licenses/bsd-license.php
-//
-// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-//
-//------------------------------------------------------------------------------
-
-
-
-/*
-
-This is the stack constructed by the exception handler (low address to high address)
- # R0 - IFAR is EFI_SYSTEM_CONTEXT for ARM
- Reg Offset
- === ======
- R0 0x00 # stmfd SP!,{R0-R12}
- R1 0x04
- R2 0x08
- R3 0x0c
- R4 0x10
- R5 0x14
- R6 0x18
- R7 0x1c
- R8 0x20
- R9 0x24
- R10 0x28
- R11 0x2c
- R12 0x30
- SP 0x34 # reserved via adding 0x20 (32) to the SP
- LR 0x38
- PC 0x3c
- CPSR 0x40
- DFSR 0x44
- DFAR 0x48
- IFSR 0x4c
- IFAR 0x50
-
- LR 0x54 # SVC Link register (we need to restore it)
-
- LR 0x58 # pushed by srsfd
- CPSR 0x5c
-
- */
-
-
- EXPORT ExceptionHandlersStart
- EXPORT ExceptionHandlersEnd
- EXPORT CommonExceptionEntry
- EXPORT AsmCommonExceptionEntry
- IMPORT GdbExceptionHandler
-
- PRESERVE8
- AREA DxeExceptionHandlers, CODE, READONLY
-
-//
-// This code gets copied to the ARM vector table
-// ExceptionHandlersStart - ExceptionHandlersEnd gets copied
-//
-ExceptionHandlersStart
-
-Reset
- b Reset
-
-UndefinedInstruction
- b UndefinedInstructionEntry
-
-SoftwareInterrupt
- b SoftwareInterruptEntry
-
-PrefetchAbort
- b PrefetchAbortEntry
-
-DataAbort
- b DataAbortEntry
-
-ReservedException
- b ReservedExceptionEntry
-
-Irq
- b Irq
-
-Fiq
- b FiqEntry
-
-
-UndefinedInstructionEntry
- sub LR, LR, #4 ; Only -2 for Thumb, adjust in CommonExceptionEntry
- srsfd #0x13! ; Store return state on SVC stack
- cpsid f, #0x13 ; Switch to SVC for common stack
- stmfd SP!,{LR} ; Store the link register for the current mode
- sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} ; Store the register state
-
- mov R0,#1 ; ExceptionType
- ldr R1,CommonExceptionEntry;
- bx R1
-
-SoftwareInterruptEntry
- sub LR, LR, #4 ; Only -2 for Thumb, adjust in CommonExceptionEntry
- srsfd #0x13! ; Store return state on SVC stack
- cpsid f ; We are already in SVC mode
- stmfd SP!,{LR} ; Store the link register for the current mode
- sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} ; Store the register state
-
- mov R0,#2 ; ExceptionType
- ldr R1,CommonExceptionEntry
- bx R1
-
-PrefetchAbortEntry
- sub LR,LR,#4
- srsfd #0x13! ; Store return state on SVC stack
- cpsid f, #0x13 ; Switch to SVC for common stack
- stmfd SP!,{LR} ; Store the link register for the current mode
- sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} ; Store the register state
-
- mov R0,#3 ; ExceptionType
- ldr R1,CommonExceptionEntry
- bx R1
-
-DataAbortEntry
- sub LR,LR,#8
- srsfd #0x13! ; Store return state on SVC stack
- cpsid f, #0x13 ; Switch to SVC for common stack
- stmfd SP!,{LR} ; Store the link register for the current mode
- sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} ; Store the register state
-
- mov R0,#4 ; ExceptionType
- ldr R1,CommonExceptionEntry
- bx R1
-
-ReservedExceptionEntry
- srsfd #0x13! ; Store return state on SVC stack
- cpsid f, #0x13 ; Switch to SVC for common stack
- stmfd SP!,{LR} ; Store the link register for the current mode
- sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} ; Store the register state
-
- mov R0,#5 ; ExceptionType
- ldr R1,CommonExceptionEntry
- bx R1
-
-FiqEntry
- sub LR,LR,#4
- srsfd #0x13! ; Store return state on SVC stack
- cps #0x13 ; Switch to SVC for common stack
- stmfd SP!,{LR} ; Store the link register for the current mode
- sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
- stmfd SP!,{R0-R12} ; Store the register state
- ; Since we have already switch to SVC R8_fiq - R12_fiq
- ; never get used or saved
- mov R0,#7 ; ExceptionType
- ldr R1,CommonExceptionEntry
- bx R1
-
-//
-// This gets patched by the C code that patches in the vector table
-//
-CommonExceptionEntry
- dcd 0x12345678
-
-ExceptionHandlersEnd
-
-//
-// This code runs from CpuDxe driver loaded address. It is patched into
-// CommonExceptionEntry.
-//
-AsmCommonExceptionEntry
- mrc p15, 0, R1, c6, c0, 2 ; Read IFAR
- str R1, [SP, #0x50] ; Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
-
- mrc p15, 0, R1, c5, c0, 1 ; Read IFSR
- str R1, [SP, #0x4c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.IFSR
-
- mrc p15, 0, R1, c6, c0, 0 ; Read DFAR
- str R1, [SP, #0x48] ; Store it in EFI_SYSTEM_CONTEXT_ARM.DFAR
-
- mrc p15, 0, R1, c5, c0, 0 ; Read DFSR
- str R1, [SP, #0x44] ; Store it in EFI_SYSTEM_CONTEXT_ARM.DFSR
-
- ldr R1, [SP, #0x5c] ; srsfd saved pre-exception CPSR on the stack
- str R1, [SP, #0x40] ; Store it in EFI_SYSTEM_CONTEXT_ARM.CPSR
-
- add R2, SP, #0x38 ; Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
- and R3, R1, #0x1f ; Check CPSR to see if User or System Mode
- cmp R3, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1df))
- cmpne R3, #0x10 ;
- stmeqed R2, {lr}^ ; save unbanked lr
- ; else
- stmneed R2, {lr} ; save SVC lr
-
-
- ldr R5, [SP, #0x58] ; PC is the LR pushed by srsfd
- ; Check to see if we have to adjust for Thumb entry
- sub r4, r0, #1 ; if (ExceptionType == 1 || ExceptionType ==2)) {
- cmp r4, #1 ; // UND & SVC have differnt LR adjust for Thumb
- bhi NoAdjustNeeded
-
- tst r1, #0x20 ; if ((CPSR & T)) == T) { // Thumb Mode on entry
- addne R5, R5, #2 ; PC += 2;
- str R5,[SP,#0x58] ; Update LR value pused by srsfd
-
-NoAdjustNeeded
-
- str R5, [SP, #0x3c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.PC
-
- sub R1, SP, #0x60 ; We pused 0x60 bytes on the stack
- str R1, [SP, #0x34] ; Store it in EFI_SYSTEM_CONTEXT_ARM.SP
-
- ; R0 is ExceptionType
- mov R1,SP ; R1 is SystemContext
-
-/*
-VOID
-EFIAPI
-GdbExceptionHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType, R0
- IN OUT EFI_SYSTEM_CONTEXT SystemContext R1
- )
-
-*/
- blx GdbExceptionHandler ; Call exception handler
-
- ldr R1,[SP,#0x3c] ; EFI_SYSTEM_CONTEXT_ARM.PC
- str R1,[SP,#0x58] ; Store it back to srsfd stack slot so it can be restored
-
- ldr R1,[SP,#0x40] ; EFI_SYSTEM_CONTEXT_ARM.CPSR
- str R1,[SP,#0x5c] ; Store it back to srsfd stack slot so it can be restored
-
- add R3, SP, #0x54 ; Make R3 point to SVC LR saved on entry
- add R2, SP, #0x38 ; Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
- and R1, R1, #0x1f ; Check to see if User or System Mode
- cmp R1, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1f))
- cmpne R1, #0x10 ;
- ldmeqed R2, {lr}^ ; restore unbanked lr
- ; else
- ldmneed R3, {lr} ; restore SVC lr, via ldmfd SP!, {LR}
-
- ldmfd SP!,{R0-R12} ; Restore general purpose registers
- ; Exception handler can not change SP
-
- add SP,SP,#0x20 ; Clear out the remaining stack space
- ldmfd SP!,{LR} ; restore the link register for this context
- rfefd SP! ; return from exception via srsfd stack slot
-
- END
-
-
diff --git a/EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt b/EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt
deleted file mode 100644
index 287b09e6a8a7..000000000000
--- a/EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-arm-none-eabi-gcc -march=armv7-a -mthumb t.c -Wl,-nostdlib --emit-relocs
-
-target remote com7
-set debug remote 1
-set remotetimeout 30
-set remotelogfile log.txt
-add-symbol-file c:/work/edk2/Build/BeagleBoard/DEBUG_GCC48/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll 0x80008360
-
-
-qSupported
-Hg0
-
-Hc-1
-qC
-qAttached
\ No newline at end of file
--
2.19.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] EmbeddedPkg: remove GdbDebugAgent library
2018-12-12 12:48 [PATCH] EmbeddedPkg: remove GdbDebugAgent library Ard Biesheuvel
@ 2018-12-12 15:02 ` Leif Lindholm
2018-12-12 15:10 ` Ard Biesheuvel
0 siblings, 1 reply; 6+ messages in thread
From: Leif Lindholm @ 2018-12-12 15:02 UTC (permalink / raw)
To: Ard Biesheuvel; +Cc: edk2-devel, Andrew Fish
On Wed, Dec 12, 2018 at 01:48:42PM +0100, Ard Biesheuvel wrote:
> The GdbDebugAgent library is unused and unmaintained, and now it
> turns out it doesn't build with Clang, so let's just get rid of it.
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
But that's really only for the ARM-specific bits.
Andrew, did anyone end up using this library for Ia32/X64?
Regards,
Leif
> ---
> BeagleBoardPkg/BeagleBoardPkg.dsc | 3 -
> EmbeddedPkg/EmbeddedPkg.dsc | 1 -
> EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf | 70 --
> EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h | 728 ---------------
> EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c | 675 --------------
> EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c | 815 -----------------
> EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c | 951 -------------------
> EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c | 963 --------------------
> EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S | 258 ------
> EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm | 259 ------
> EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt | 15 -
> 11 files changed, 4738 deletions(-)
>
> diff --git a/BeagleBoardPkg/BeagleBoardPkg.dsc b/BeagleBoardPkg/BeagleBoardPkg.dsc
> index 348624a0389c..6dabfa905ae9 100644
> --- a/BeagleBoardPkg/BeagleBoardPkg.dsc
> +++ b/BeagleBoardPkg/BeagleBoardPkg.dsc
> @@ -155,9 +155,6 @@ [LibraryClasses.common.SEC]
> # 1/123 faster than Stm or Vstm version
> BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
>
> - # Uncomment to turn on GDB stub in SEC.
> - #DebugAgentLib|EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
> -
> [LibraryClasses.common.PEI_CORE]
> PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
> ReportStatusCodeLib|MdeModulePkg/Library/PeiDxeDebugLibReportStatusCode/PeiDxeDebugLibReportStatusCode.inf
> diff --git a/EmbeddedPkg/EmbeddedPkg.dsc b/EmbeddedPkg/EmbeddedPkg.dsc
> index 9dc1b63dfb87..4d9e6399d575 100644
> --- a/EmbeddedPkg/EmbeddedPkg.dsc
> +++ b/EmbeddedPkg/EmbeddedPkg.dsc
> @@ -237,7 +237,6 @@ [Components.common]
> EmbeddedPkg/Library/AcpiLib/AcpiLib.inf
> EmbeddedPkg/Library/DebugAgentTimerLibNull/DebugAgentTimerLibNull.inf
> EmbeddedPkg/Library/FdtLib/FdtLib.inf
> - EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
> EmbeddedPkg/Library/PrePiHobLib/PrePiHobLib.inf
> EmbeddedPkg/Library/PrePiMemoryAllocationLib/PrePiMemoryAllocationLib.inf
>
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf b/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
> deleted file mode 100644
> index cfa8d8a761ca..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
> +++ /dev/null
> @@ -1,70 +0,0 @@
> -#/** @file
> -# Null instance of Debug Agent Library with empty functions.
> -#
> -# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
> -#
> -# This program and the accompanying materials
> -# are licensed and made available under the terms and conditions of the BSD License
> -# which accompanies this distribution. The full text of the license may be found at
> -# http://opensource.org/licenses/bsd-license.php
> -# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> -# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -#
> -#
> -#**/
> -
> -[Defines]
> - INF_VERSION = 0x00010005
> - BASE_NAME = GdbDebugAgent
> - FILE_GUID = b9f10c17-6ca0-40b5-9b44-6253cfc7d24b
> - MODULE_TYPE = BASE
> - VERSION_STRING = 1.0
> - LIBRARY_CLASS = DebugAgentLib
> -
> -#
> -# The following information is for reference only and not required by the build tools.
> -#
> -# VALID_ARCHITECTURES = IA32 X64 EBC
> -#
> -
> -[Sources.common]
> - GdbDebugAgent.c
> -
> -[Sources.arm]
> - Arm/Processor.c
> - Arm/ExceptionSupport.ARMv6.S
> - Arm/ExceptionSupport.ARMv6.asm
> -
> -[Sources.X64]
> - Ia32/Processor.c
> -
> -[Sources.Ia32]
> - X64/Processor.c
> -
> -
> -[Packages]
> - MdePkg/MdePkg.dec
> - MdeModulePkg/MdeModulePkg.dec
> - EmbeddedPkg/EmbeddedPkg.dec
> -
> -[Packages.arm]
> - ArmPkg/ArmPkg.dec
> -
> -[LibraryClasses]
> - BaseLib
> - DebugLib
> - BaseMemoryLib
> - PcdLib
> - GdbSerialLib
> - CacheMaintenanceLib
> - DebugAgentTimerLib
> -
> -[FeaturePcd.common]
> - gEmbeddedTokenSpaceGuid.PcdGdbSerial
> -
> -[FixedPcd.common]
> - gEmbeddedTokenSpaceGuid.PcdGdbMaxPacketRetryCount
> - gEmbeddedTokenSpaceGuid.PcdGdbTimerPeriodMilliseconds
> -
> -[FixedPcd.arm]
> - gArmTokenSpaceGuid.PcdCpuVectorBaseAddress
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h b/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h
> deleted file mode 100644
> index 7d85481c4be9..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h
> +++ /dev/null
> @@ -1,728 +0,0 @@
> -/** @file
> - Private include file for GDB stub
> -
> - Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> -
> - This program and the accompanying materials
> - are licensed and made available under the terms and conditions of the BSD License
> - which accompanies this distribution. The full text of the license may be found at
> - http://opensource.org/licenses/bsd-license.php
> -
> - THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> - WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -
> -**/
> -
> -#ifndef __GCC_DEBUG_AGENT_INTERNAL__
> -#define __GCC_DEBUG_AGENT_INTERNAL__
> -
> -#include <Uefi.h>
> -#include <Library/BaseLib.h>
> -#include <Library/BaseMemoryLib.h>
> -#include <Library/MemoryAllocationLib.h>
> -#include <Library/DebugLib.h>
> -#include <Library/PcdLib.h>
> -#include <Library/GdbSerialLib.h>
> -#include <Library/PrintLib.h>
> -#include <Library/CacheMaintenanceLib.h>
> -#include <Library/DebugAgentTimerLib.h>
> -#include <Library/DebugAgentLib.h>
> -
> -#include <IndustryStandard/PeImage.h>
> -#include <Protocol/DebugSupport.h>
> -
> -extern CONST CHAR8 mHexToStr[];
> -
> -// maximum size of input and output buffers
> -// This value came from the show remote command of the gdb we tested against
> -#define MAX_BUF_SIZE 2000
> -
> -// maximum size of address buffer
> -#define MAX_ADDR_SIZE 32
> -
> -// maximum size of register number buffer
> -#define MAX_REG_NUM_BUF_SIZE 32
> -
> -// maximum size of length buffer
> -#define MAX_LENGTH_SIZE 32
> -
> -// maximum size of T signal members
> -#define MAX_T_SIGNAL_SIZE 64
> -
> -// the mask used to clear all the cache
> -#define TF_BIT 0x00000100
> -
> -
> -//
> -// GDB Signal definitions - generic names for interrupts
> -//
> -#define GDB_SIGINT 2 // Interrupt process via ctrl-c
> -#define GDB_SIGILL 4 // Illegal instruction
> -#define GDB_SIGTRAP 5 // Trace Trap (Breakpoint and SingleStep)
> -#define GDB_SIGEMT 7 // Emulator Trap
> -#define GDB_SIGFPE 8 // Floating point exception
> -#define GDB_SIGSEGV 11 // Setgment violation, page fault
> -
> -
> -//
> -// GDB File I/O Error values, zero means no error
> -// Includes all general GDB Unix like error values
> -//
> -#define GDB_EBADMEMADDRBUFSIZE 11 // the buffer that stores memory Address to be read from/written to is not the right size
> -#define GDB_EBADMEMLENGBUFSIZE 12 // the buffer that stores Length is not the right size
> -#define GDB_EBADMEMLENGTH 13 // Length, the given number of bytes to read or write, is not the right size
> -#define GDB_EBADMEMDATA 14 // one of the bytes or nibbles of the memory is leess than 0
> -#define GDB_EBADMEMDATASIZE 15 // the memory data, 'XX..', is too short or too long
> -#define GDB_EBADBUFSIZE 21 // the buffer created is not the correct size
> -#define GDB_EINVALIDARG 31 // argument is invalid
> -#define GDB_ENOSPACE 41 //
> -#define GDB_EINVALIDBRKPOINTTYPE 51 // the breakpoint type is not recognized
> -#define GDB_EINVALIDREGNUM 61 // given register number is not valid: either <0 or >=Number of Registers
> -#define GDB_EUNKNOWN 255 // unknown
> -
> -
> -//
> -// These devices are open by GDB so we can just read and write to them
> -//
> -#define GDB_STDIN 0x00
> -#define GDB_STDOUT 0x01
> -#define GDB_STDERR 0x02
> -
> -//
> -//Define Register size for different architectures
> -//
> -#if defined (MDE_CPU_IA32)
> -#define REG_SIZE 32
> -#elif defined (MDE_CPU_X64)
> -#define REG_SIZE 64
> -#elif defined (MDE_CPU_ARM)
> -#define REG_SIZE 32
> -#endif
> -
> -
> -typedef struct {
> - EFI_EXCEPTION_TYPE Exception;
> - UINT8 SignalNo;
> -} EFI_EXCEPTION_TYPE_ENTRY;
> -
> -
> -#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
> -
> -//
> -// Byte packed structure for DR6
> -// 32-bits on IA-32
> -// 64-bits on X64. The upper 32-bits on X64 are reserved
> -//
> -typedef union {
> - struct {
> - UINT32 B0:1; // Breakpoint condition detected
> - UINT32 B1:1; // Breakpoint condition detected
> - UINT32 B2:1; // Breakpoint condition detected
> - UINT32 B3:1; // Breakpoint condition detected
> - UINT32 Reserved_1:9; // Reserved
> - UINT32 BD:1; // Debug register access detected
> - UINT32 BS:1; // Single step
> - UINT32 BT:1; // Task switch
> - UINT32 Reserved_2:16; // Reserved
> - } Bits;
> - UINTN UintN;
> -} IA32_DR6;
> -
> -//
> -// Byte packed structure for DR7
> -// 32-bits on IA-32
> -// 64-bits on X64. The upper 32-bits on X64 are reserved
> -//
> -typedef union {
> - struct {
> - UINT32 L0:1; // Local breakpoint enable
> - UINT32 G0:1; // Global breakpoint enable
> - UINT32 L1:1; // Local breakpoint enable
> - UINT32 G1:1; // Global breakpoint enable
> - UINT32 L2:1; // Local breakpoint enable
> - UINT32 G2:1; // Global breakpoint enable
> - UINT32 L3:1; // Local breakpoint enable
> - UINT32 G3:1; // Global breakpoint enable
> - UINT32 LE:1; // Local exact breakpoint enable
> - UINT32 GE:1; // Global exact breakpoint enable
> - UINT32 Reserved_1:3; // Reserved
> - UINT32 GD:1; // Global detect enable
> - UINT32 Reserved_2:2; // Reserved
> - UINT32 RW0:2; // Read/Write field
> - UINT32 LEN0:2; // Length field
> - UINT32 RW1:2; // Read/Write field
> - UINT32 LEN1:2; // Length field
> - UINT32 RW2:2; // Read/Write field
> - UINT32 LEN2:2; // Length field
> - UINT32 RW3:2; // Read/Write field
> - UINT32 LEN3:2; // Length field
> - } Bits;
> - UINTN UintN;
> -} IA32_DR7;
> -
> -#endif /* if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) */
> -
> -typedef enum {
> - InstructionExecution, //Hardware breakpoint
> - DataWrite, //watch
> - DataRead, //rwatch
> - DataReadWrite, //awatch
> - SoftwareBreakpoint, //Software breakpoint
> - NotSupported
> -} BREAK_TYPE;
> -
> -//
> -// Array of exception types that need to be hooked by the debugger
> -//
> -extern EFI_EXCEPTION_TYPE_ENTRY gExceptionType[];
> -
> -//
> -// If the periodic callback is called while we are processing an F packet we need
> -// to let the callback know to not read from the serail stream as it could steal
> -// characters from the F reponse packet
> -//
> -extern BOOLEAN gProcessingFPacket;
> -
> -
> -/**
> - Return the number of entries in the gExceptionType[]
> -
> - @retval UINTN, the number of entries in the gExceptionType[] array.
> - **/
> -UINTN
> -MaxEfiException (
> - VOID
> - );
> -
> -
> -/**
> - Check to see if the ISA is supported.
> - ISA = Instruction Set Architecture
> -
> - @retval TRUE if Isa is supported,
> - FALSE otherwise.
> - **/
> -BOOLEAN
> -CheckIsa (
> - IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
> - );
> -
> -
> -/**
> - Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
> -
> - @param SystemContext Register content at time of the exception
> - @param GdbExceptionType GDB exception type
> - **/
> -
> -VOID
> -GdbSendTSignal (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINT8 GdbExceptionType
> - );
> -
> -
> -/**
> - Translates the EFI mapping to GDB mapping
> -
> - @param EFIExceptionType EFI Exception that is being processed
> - @retval UINTN that corresponds to EFIExceptionType's GDB exception type number
> - **/
> -UINT8
> -ConvertEFItoGDBtype (
> - IN EFI_EXCEPTION_TYPE EFIExceptionType
> - );
> -
> -
> -/**
> - Empties the given buffer
> - @param *Buf pointer to the first element in buffer to be emptied
> - **/
> -VOID
> -EmptyBuffer (
> - IN CHAR8 *Buf
> - );
> -
> -
> -/**
> - Converts an 8-bit Hex Char into a INTN.
> -
> - @param Char - the hex character to be converted into UINTN
> - @retval a INTN, from 0 to 15, that corressponds to Char
> - -1 if Char is not a hex character
> - **/
> -INTN
> -HexCharToInt (
> - IN CHAR8 Char
> - );
> -
> -
> -/** 'E NN'
> - Send an error with the given error number after converting to hex.
> - The error number is put into the buffer in hex. '255' is the biggest errno we can send.
> - ex: 162 will be sent as A2.
> -
> - @param errno the error number that will be sent
> - **/
> -VOID
> -EFIAPI
> -SendError (
> - IN UINT8 ErrorNum
> - );
> -
> -
> -/**
> - Send 'OK' when the function is done executing successfully.
> - **/
> -VOID
> -SendSuccess (
> - VOID
> - );
> -
> -
> -/**
> - Send empty packet to specify that particular command/functionality is not supported.
> - **/
> -VOID
> -SendNotSupported (
> - VOID
> - );
> -
> -/** ‘p n’
> - Reads the n-th register's value into an output buffer and sends it as a packet
> - @param SystemContext Register content at time of the exception
> - @param InBuffer This is the input buffer received from gdb server
> - **/
> -VOID
> -ReadNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - );
> -
> -
> -/** ‘g’
> - Reads the general registers into an output buffer and sends it as a packet
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -ReadGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -
> -/** ‘P n...=r...’
> - Writes the new value of n-th register received into the input buffer to the n-th register
> - @param SystemContext Register content at time of the exception
> - @param InBuffer This is the input buffer received from gdb server
> - **/
> -VOID
> -WriteNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - );
> -
> -
> -/** ‘G XX...’
> - Writes the new values received into the input buffer to the general registers
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Pointer to the input buffer received from gdb server
> - **/
> -
> -VOID
> -WriteGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - );
> -
> -
> -/** ‘m addr,length ’
> - Find the Length of the area to read and the start addres. Finally, pass them to
> - another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
> - send it as a packet.
> -
> - @param *PacketData Pointer to Payload data for the packet
> - **/
> -VOID
> -ReadFromMemory (
> - IN CHAR8 *PacketData
> - );
> -
> -
> -/** ‘M addr,length :XX...’
> - Find the Length of the area in bytes to write and the start addres. Finally, pass them to
> - another function, TransferFromInBufToMem, that will write to that memory space the info in
> - the input buffer.
> -
> - @param PacketData Pointer to Payload data for the packet
> - **/
> -VOID
> -WriteToMemory (
> - IN CHAR8 *PacketData
> - );
> -
> -
> -/** ‘c [addr ]’
> - Continue. addr is Address to resume. If addr is omitted, resume at current
> - Address.
> -
> - @param SystemContext Register content at time of the exception
> - @param *PacketData Pointer to PacketData
> - **/
> -
> -VOID
> -ContinueAtAddress (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - );
> -
> -
> -/** ‘s [addr ]’
> - Single step. addr is the Address at which to resume. If addr is omitted, resume
> - at same Address.
> -
> - @param SystemContext Register content at time of the exception
> - @param PacketData Pointer to Payload data for the packet
> - **/
> -VOID
> -SingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - );
> -
> -/**
> - Insert Single Step in the SystemContext
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -AddSingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -/**
> - Remove Single Step in the SystemContext
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -RemoveSingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -
> -/**
> - ‘Z1, [addr], [length]’
> - ‘Z2, [addr], [length]’
> - ‘Z3, [addr], [length]’
> - ‘Z4, [addr], [length]’
> -
> - Insert hardware breakpoint/watchpoint at address addr of size length
> -
> - @param SystemContext Register content at time of the exception
> - @param *PacketData Pointer to the Payload data for the packet
> -
> -**/
> -VOID
> -EFIAPI
> -InsertBreakPoint(
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - );
> -
> -
> -/**
> - ‘z1, [addr], [length]’
> - ‘z2, [addr], [length]’
> - ‘z3, [addr], [length]’
> - ‘z4, [addr], [length]’
> -
> - Remove hardware breakpoint/watchpoint at address addr of size length
> -
> - @param SystemContext Register content at time of the exception
> - @param *PacketData Pointer to the Payload data for the packet
> -
> -**/
> -VOID
> -EFIAPI
> -RemoveBreakPoint(
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - );
> -
> -
> -/**
> - Exception Hanldler for GDB. It will be called for all exceptions
> - registered via the gExceptionType[] array.
> -
> - @param ExceptionType Exception that is being processed
> - @param SystemContext Register content at time of the exception
> -
> - **/
> -VOID
> -EFIAPI
> -GdbExceptionHandler (
> - IN EFI_EXCEPTION_TYPE ExceptionType,
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -
> -/**
> - Periodic callback for GDB. This function is used to catch a ctrl-c or other
> - break in type command from GDB.
> -
> - @param SystemContext Register content at time of the call
> -
> - **/
> -VOID
> -EFIAPI
> -GdbPeriodicCallBack (
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -
> -/**
> - Make two serail consoles: 1) StdIn and StdOut via GDB. 2) StdErr via GDB.
> -
> - These console show up on the remote system running GDB
> -
> -**/
> -
> -VOID
> -GdbInitializeSerialConsole (
> - VOID
> - );
> -
> -
> -/**
> - Send a GDB Remote Serial Protocol Packet
> -
> - $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
> - the packet teminating character '#' and the two digit checksum.
> -
> - If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
> - in an infinit loop. This is so if you unplug the debugger code just keeps running
> -
> - @param PacketData Payload data for the packet
> -
> - @retval Number of bytes of packet data sent.
> -
> -**/
> -UINTN
> -SendPacket (
> - IN CHAR8 *PacketData
> - );
> -
> -
> -/**
> - Receive a GDB Remote Serial Protocol Packet
> -
> - $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
> - the packet teminating character '#' and the two digit checksum.
> -
> - If host re-starts sending a packet without ending the previous packet, only the last valid packet is processed.
> - (In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)
> -
> - If an ack '+' is not sent resend the packet
> -
> - @param PacketData Payload data for the packet
> -
> - @retval Number of bytes of packet data received.
> -
> - **/
> -UINTN
> -ReceivePacket (
> - OUT CHAR8 *PacketData,
> - IN UINTN PacketDataSize
> - );
> -
> -
> -/**
> - Read data from a FileDescriptor. On success number of bytes read is returned. Zero indicates
> - the end of a file. On error -1 is returned. If count is zero, GdbRead returns zero.
> -
> - @param FileDescriptor Device to talk to.
> - @param Buffer Buffer to hold Count bytes that were read
> - @param Count Number of bytes to transfer.
> -
> - @retval -1 Error
> - @retval {other} Number of bytes read.
> -
> -**/
> -INTN
> -GdbRead (
> - IN INTN FileDescriptor,
> - OUT VOID *Buffer,
> - IN UINTN Count
> - );
> -
> -
> -/**
> - Write data to a FileDescriptor. On success number of bytes written is returned. Zero indicates
> - nothing was written. On error -1 is returned.
> -
> - @param FileDescriptor Device to talk to.
> - @param Buffer Buffer to hold Count bytes that are to be written
> - @param Count Number of bytes to transfer.
> -
> - @retval -1 Error
> - @retval {other} Number of bytes written.
> -
> -**/
> -INTN
> -GdbWrite (
> - IN INTN FileDescriptor,
> - OUT CONST VOID *Buffer,
> - IN UINTN Count
> - );
> -
> -UINTN *
> -FindPointerToRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber
> - );
> -
> -CHAR8 *
> -BasicReadRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *OutBufPtr
> - );
> -
> -VOID
> -TransferFromInBufToMem (
> - IN UINTN Length,
> - IN UINT8 *Address,
> - IN CHAR8 *NewData
> - );
> -
> -VOID
> -TransferFromMemToOutBufAndSend (
> - IN UINTN Length,
> - IN UINT8 *Address
> - );
> -
> -CHAR8 *
> -BasicWriteRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *InBufPtr
> - );
> -
> -VOID
> -PrintReg (
> - EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -UINTN
> -ParseBreakpointPacket (
> - IN CHAR8 *PacketData,
> - OUT UINTN *Type,
> - OUT UINTN *Address,
> - OUT UINTN *Length
> - );
> -
> -UINTN
> -GetBreakpointDataAddress (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN BreakpointNumber
> - );
> -
> -UINTN
> -GetBreakpointDetected (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -BREAK_TYPE
> -GetBreakpointType (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN BreakpointNumber
> - );
> -
> -UINTN
> -ConvertLengthData (
> - IN UINTN Length
> - );
> -
> -EFI_STATUS
> -FindNextFreeDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - OUT UINTN *Register
> - );
> -
> -EFI_STATUS
> -EnableDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Register,
> - IN UINTN Address,
> - IN UINTN Length,
> - IN UINTN Type
> - );
> -
> -EFI_STATUS
> -FindMatchingDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Address,
> - IN UINTN Length,
> - IN UINTN Type,
> - OUT UINTN *Register
> - );
> -
> -EFI_STATUS
> -DisableDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Register
> - );
> -
> -VOID
> -InitializeProcessor (
> - VOID
> - );
> -
> -/**
> - Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
> -
> - @param SystemContext Register content at time of the exception
> - @param GdbExceptionType GDB exception type
> - **/
> -VOID
> -ProcessorSendTSignal (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINT8 GdbExceptionType,
> - IN OUT CHAR8 *TSignalPtr,
> - IN UINTN SizeOfBuffer
> - );
> -
> -/**
> - Check to see if this exception is related to ctrl-c handling.
> -
> - @param ExceptionType Exception that is being processed
> - @param SystemContext Register content at time of the exception
> -
> - @return TRUE This was a ctrl-c check that did not find a ctrl-c
> - @return FALSE This was not a ctrl-c check or some one hit ctrl-c
> - **/
> -BOOLEAN
> -ProcessorControlC (
> - IN EFI_EXCEPTION_TYPE ExceptionType,
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext
> - );
> -
> -
> -/**
> - Initialize debug agent.
> -
> - This function is used to set up debug enviroment. It may enable interrupts.
> -
> - @param[in] InitFlag Init flag is used to decide initialize process.
> - @param[in] Context Context needed according to InitFlag, it was optional.
> -
> -**/
> -VOID
> -EFIAPI
> -DebugAgentHookExceptions (
> - IN UINT32 InitFlag,
> - IN VOID *Context OPTIONAL
> - );
> -
> -
> -#endif
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c b/EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c
> deleted file mode 100644
> index a43ff95d03a3..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c
> +++ /dev/null
> @@ -1,675 +0,0 @@
> -/** @file
> - Processor specific parts of the GDB stub
> -
> - Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
> -
> - This program and the accompanying materials
> - are licensed and made available under the terms and conditions of the BSD License
> - which accompanies this distribution. The full text of the license may be found at
> - http://opensource.org/licenses/bsd-license.php
> -
> - THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> - WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -
> -**/
> -
> -
> -#include <GdbDebugAgent.h>
> -#include <Library/PrintLib.h>
> -#include <Library/ArmLib.h>
> -
> -//
> -// Externs from the exception handler assembly file
> -//
> -VOID
> -ExceptionHandlersStart (
> - VOID
> - );
> -
> -VOID
> -ExceptionHandlersEnd (
> - VOID
> - );
> -
> -VOID
> -CommonExceptionEntry (
> - VOID
> - );
> -
> -VOID
> -AsmCommonExceptionEntry (
> - VOID
> - );
> -
> -
> -//
> -// Array of exception types that need to be hooked by the debugger
> -// (efi, gdb) //efi number
> -//
> -EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
> - { EXCEPT_ARM_SOFTWARE_INTERRUPT, GDB_SIGTRAP },
> - { EXCEPT_ARM_UNDEFINED_INSTRUCTION, GDB_SIGTRAP },
> - { EXCEPT_ARM_PREFETCH_ABORT, GDB_SIGTRAP },
> - { EXCEPT_ARM_DATA_ABORT, GDB_SIGTRAP }, // GDB_SIGEMT
> - { EXCEPT_ARM_RESERVED, GDB_SIGTRAP }, // GDB_SIGILL
> - { EXCEPT_ARM_FIQ, GDB_SIGINT } // Used for ctrl-c
> -};
> -
> -// Shut up some annoying RVCT warnings
> -#ifdef __CC_ARM
> -#pragma diag_suppress 1296
> -#endif
> -
> -UINTN gRegisterOffsets[] = {
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R0),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R1),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R2),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R3),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R4),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R5),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R6),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R7),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R8),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R9),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R10),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R11),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, R12),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, SP),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, LR),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, PC),
> - 0x00000F01, // f0
> - 0x00000F02,
> - 0x00000F03,
> - 0x00000F11, // f1
> - 0x00000F12,
> - 0x00000F13,
> - 0x00000F21, // f2
> - 0x00000F22,
> - 0x00000F23,
> - 0x00000F31, // f3
> - 0x00000F32,
> - 0x00000F33,
> - 0x00000F41, // f4
> - 0x00000F42,
> - 0x00000F43,
> - 0x00000F51, // f5
> - 0x00000F52,
> - 0x00000F53,
> - 0x00000F61, // f6
> - 0x00000F62,
> - 0x00000F63,
> - 0x00000F71, // f7
> - 0x00000F72,
> - 0x00000F73,
> - 0x00000FFF, // fps
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_ARM, CPSR)
> -};
> -
> -// restore warnings for RVCT
> -#ifdef __CC_ARM
> -#pragma diag_default 1296
> -#endif
> -
> -
> -/**
> - Return the number of entries in the gExceptionType[]
> -
> - @retval UINTN, the number of entries in the gExceptionType[] array.
> - **/
> -UINTN
> -MaxEfiException (
> - VOID
> - )
> -{
> - return sizeof (gExceptionType)/sizeof (EFI_EXCEPTION_TYPE_ENTRY);
> -}
> -
> -
> -
> -
> -/**
> - Check to see if the ISA is supported.
> - ISA = Instruction Set Architecture
> -
> - @retval TRUE if Isa is supported
> -
> -**/
> -BOOLEAN
> -CheckIsa (
> - IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
> - )
> -{
> - if (Isa == IsaArm) {
> - return TRUE;
> - } else {
> - return FALSE;
> - }
> -}
> -
> -
> -/**
> - This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
> - It is, by default, set to find the register pointer of the ARM member
> - @param SystemContext Register content at time of the exception
> - @param RegNumber The register to which we want to find a pointer
> - @retval the pointer to the RegNumber-th pointer
> - **/
> -UINTN *
> -FindPointerToRegister(
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber
> - )
> -{
> - UINT8 *TempPtr;
> - ASSERT(gRegisterOffsets[RegNumber] < 0xF00);
> - TempPtr = ((UINT8 *)SystemContext.SystemContextArm) + gRegisterOffsets[RegNumber];
> - return (UINT32 *)TempPtr;
> -}
> -
> -
> -/**
> - Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
> - @param SystemContext Register content at time of the exception
> - @param RegNumber the number of the register that we want to read
> - @param OutBufPtr pointer to the output buffer's end. the new data will be added from this point on.
> - @retval the pointer to the next character of the output buffer that is available to be written on.
> - **/
> -CHAR8 *
> -BasicReadRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *OutBufPtr
> - )
> -{
> - UINTN RegSize;
> - CHAR8 Char;
> -
> - if (gRegisterOffsets[RegNumber] > 0xF00) {
> - AsciiSPrint(OutBufPtr, 9, "00000000");
> - OutBufPtr += 8;
> - return OutBufPtr;
> - }
> -
> - RegSize = 0;
> - while (RegSize < 32) {
> - Char = mHexToStr[(UINT8)((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
> - if ((Char >= 'A') && (Char <= 'F')) {
> - Char = Char - 'A' + 'a';
> - }
> - *OutBufPtr++ = Char;
> -
> - Char = mHexToStr[(UINT8)((*FindPointerToRegister(SystemContext, RegNumber) >> RegSize) & 0xf)];
> - if ((Char >= 'A') && (Char <= 'F')) {
> - Char = Char - 'A' + 'a';
> - }
> - *OutBufPtr++ = Char;
> -
> - RegSize = RegSize + 8;
> - }
> - return OutBufPtr;
> -}
> -
> -
> -/**
> - Reads the n-th register's value into an output buffer and sends it as a packet
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Pointer to the input buffer received from gdb server
> - **/
> -VOID
> -ReadNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN RegNumber;
> - CHAR8 OutBuffer[9]; // 1 reg=8 hex chars, and the end '\0' (escape seq)
> - CHAR8 *OutBufPtr; // pointer to the output buffer
> -
> - RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
> -
> - if (RegNumber >= (sizeof (gRegisterOffsets)/sizeof (UINTN))) {
> - SendError (GDB_EINVALIDREGNUM);
> - return;
> - }
> -
> - OutBufPtr = OutBuffer;
> - OutBufPtr = BasicReadRegister (SystemContext, RegNumber, OutBufPtr);
> -
> - *OutBufPtr = '\0'; // the end of the buffer
> - SendPacket(OutBuffer);
> -}
> -
> -
> -/**
> - Reads the general registers into an output buffer and sends it as a packet
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -ReadGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - UINTN Index;
> - // a UINT32 takes 8 ascii characters
> - CHAR8 OutBuffer[(sizeof (gRegisterOffsets) * 2) + 1];
> - CHAR8 *OutBufPtr;
> -
> - // It is not safe to allocate pool here....
> - OutBufPtr = OutBuffer;
> - for (Index = 0; Index < (sizeof (gRegisterOffsets)/sizeof (UINTN)); Index++) {
> - OutBufPtr = BasicReadRegister (SystemContext, Index, OutBufPtr);
> - }
> -
> - *OutBufPtr = '\0';
> - SendPacket(OutBuffer);
> -}
> -
> -
> -/**
> - Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
> - @param SystemContext Register content at time of the exception
> - @param RegNumber the number of the register that we want to write
> - @param InBufPtr pointer to the output buffer. the new data will be extracted from the input buffer from this point on.
> - @retval the pointer to the next character of the input buffer that can be used
> - **/
> -CHAR8 *
> -BasicWriteRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *InBufPtr
> - )
> -{
> - UINTN RegSize;
> - UINTN TempValue; // the value transferred from a hex char
> - UINT32 NewValue; // the new value of the RegNumber-th Register
> -
> - if (gRegisterOffsets[RegNumber] > 0xF00) {
> - return InBufPtr + 8;
> - }
> -
> - NewValue = 0;
> - RegSize = 0;
> - while (RegSize < 32) {
> - TempValue = HexCharToInt(*InBufPtr++);
> -
> - if ((INTN)TempValue < 0) {
> - SendError (GDB_EBADMEMDATA);
> - return NULL;
> - }
> -
> - NewValue += (TempValue << (RegSize+4));
> - TempValue = HexCharToInt(*InBufPtr++);
> -
> - if ((INTN)TempValue < 0) {
> - SendError (GDB_EBADMEMDATA);
> - return NULL;
> - }
> -
> - NewValue += (TempValue << RegSize);
> - RegSize = RegSize + 8;
> - }
> - *(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
> - return InBufPtr;
> -}
> -
> -
> -/** ‘P n...=r...’
> - Writes the new value of n-th register received into the input buffer to the n-th register
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Ponter to the input buffer received from gdb server
> - **/
> -VOID
> -WriteNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN RegNumber;
> - CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
> - CHAR8 *RegNumBufPtr;
> - CHAR8 *InBufPtr; // pointer to the input buffer
> -
> - // find the register number to write
> - InBufPtr = &InBuffer[1];
> - RegNumBufPtr = RegNumBuffer;
> - while (*InBufPtr != '=') {
> - *RegNumBufPtr++ = *InBufPtr++;
> - }
> - *RegNumBufPtr = '\0';
> - RegNumber = AsciiStrHexToUintn (RegNumBuffer);
> -
> - // check if this is a valid Register Number
> - if (RegNumber >= (sizeof (gRegisterOffsets)/sizeof (UINTN))) {
> - SendError (GDB_EINVALIDREGNUM);
> - return;
> - }
> - InBufPtr++; // skips the '=' character
> - BasicWriteRegister (SystemContext, RegNumber, InBufPtr);
> - SendSuccess();
> -}
> -
> -
> -/** ‘G XX...’
> - Writes the new values received into the input buffer to the general registers
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Pointer to the input buffer received from gdb server
> - **/
> -
> -VOID
> -EFIAPI
> -WriteGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN i;
> - CHAR8 *InBufPtr; /// pointer to the input buffer
> - UINTN MinLength;
> - UINTN RegisterCount = (sizeof (gRegisterOffsets)/sizeof (UINTN));
> -
> - MinLength = (RegisterCount * 8) + 1; // 'G' plus the registers in ASCII format
> -
> - if (AsciiStrLen(InBuffer) < MinLength) {
> - //Bad message. Message is not the right length
> - SendError (GDB_EBADBUFSIZE);
> - return;
> - }
> -
> - InBufPtr = &InBuffer[1];
> -
> - // Read the new values for the registers from the input buffer to an array, NewValueArray.
> - // The values in the array are in the gdb ordering
> - for(i = 0; i < RegisterCount; i++) {
> - InBufPtr = BasicWriteRegister (SystemContext, i, InBufPtr);
> - }
> -
> - SendSuccess ();
> -}
> -
> -
> -
> -
> -/**
> - Continue. addr is Address to resume. If addr is omitted, resume at current
> - Address.
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -ContinueAtAddress (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - if (PacketData[1] != '\0') {
> - SystemContext.SystemContextArm->PC = AsciiStrHexToUintn(&PacketData[1]);
> - }
> -}
> -
> -
> -/** ‘s [addr ]’
> - Single step. addr is the Address at which to resume. If addr is omitted, resume
> - at same Address.
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -SingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - SendNotSupported();
> -}
> -
> -
> -VOID
> -EFIAPI
> -InsertBreakPoint (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - SendNotSupported ();
> -}
> -
> -VOID
> -EFIAPI
> -RemoveBreakPoint (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - SendNotSupported ();
> -}
> -
> -
> -/**
> - Send the T signal with the given exception type (in gdb order) and possibly
> - with n:r pairs related to the watchpoints
> -
> - @param SystemContext Register content at time of the exception
> - @param GdbExceptionType GDB exception type
> - **/
> -VOID
> -ProcessorSendTSignal (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINT8 GdbExceptionType,
> - IN OUT CHAR8 *TSignalPtr,
> - IN UINTN SizeOfBuffer
> - )
> -{
> - *TSignalPtr = '\0';
> -}
> -
> -/**
> - FIQ state is only changed by FIQ exception. We don't want to take FIQ
> - ticks in the GDB stub. The stub disables FIQ on entry, but this is the
> - third instruction that executes in the execption handler. Thus we have
> - a crack we need to test for.
> -
> - @param PC PC of execption
> -
> - @return TRUE We are in the GDB stub exception preamble
> - @return FALSE We are not in GDB stub code
> - **/
> -BOOLEAN
> -InFiqCrack (
> - IN UINT32 PC
> - )
> -{
> - UINT64 VectorBase = PcdGet64 (PcdCpuVectorBaseAddress);
> - UINT32 Length = (UINTN)ExceptionHandlersEnd - (UINTN)ExceptionHandlersStart;
> -
> - if ((PC >= VectorBase) && (PC <= (VectorBase + Length))) {
> - return TRUE;
> - }
> -
> - return FALSE;
> -}
> -
> -
> -/**
> - Check to see if this exception is related to ctrl-c handling.
> -
> - In this scheme we dedicate FIQ to the ctrl-c handler so it is
> - independent of the rest of the system.
> -
> - SaveAndSetDebugTimerInterrupt () can be used to
> -
> - @param ExceptionType Exception that is being processed
> - @param SystemContext Register content at time of the exception
> -
> - @return TRUE This was a ctrl-c check that did not find a ctrl-c
> - @return FALSE This was not a ctrl-c check or some one hit ctrl-c
> - **/
> -BOOLEAN
> -ProcessorControlC (
> - IN EFI_EXCEPTION_TYPE ExceptionType,
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - CHAR8 Char;
> - BOOLEAN Return = TRUE;
> -
> - if (ExceptionType != EXCEPT_ARM_FIQ) {
> - // Skip it as it is not related to ctrl-c
> - return FALSE;
> - }
> -
> - if (InFiqCrack (SystemContext.SystemContextArm->PC)) {
> - // We are in our own interrupt preable, so skip this tick.
> - // We never want to let gdb see the debug stub running if we can help it
> - return FALSE;
> - }
> -
> - while (TRUE) {
> - if (!GdbIsCharAvailable ()) {
> - //
> - // No characters are pending so exit the loop
> - //
> - Return = TRUE;
> - break;
> - }
> -
> - Char = GdbGetChar ();
> - if (Char == 0x03) {
> - //
> - // We have a ctrl-c so exit and process exception for ctrl-c
> - //
> - Return = FALSE;
> - break;
> - }
> - }
> -
> - DebugAgentTimerEndOfInterrupt ();
> -
> - // Force an exit from the exception handler as we are done
> - return Return;
> -}
> -
> -
> -/**
> - Enable/Disable the interrupt of debug timer and return the interrupt state
> - prior to the operation.
> -
> - If EnableStatus is TRUE, enable the interrupt of debug timer.
> - If EnableStatus is FALSE, disable the interrupt of debug timer.
> -
> - @param[in] EnableStatus Enable/Disable.
> -
> - @retval TRUE Debug timer interrupt were enabled on entry to this call.
> - @retval FALSE Debug timer interrupt were disabled on entry to this call.
> -
> -**/
> -BOOLEAN
> -EFIAPI
> -SaveAndSetDebugTimerInterrupt (
> - IN BOOLEAN EnableStatus
> - )
> -{
> - BOOLEAN FiqEnabled;
> -
> - FiqEnabled = ArmGetFiqState ();
> -
> - if (EnableStatus) {
> - DebugAgentTimerSetPeriod (PcdGet32 (PcdGdbTimerPeriodMilliseconds));
> - ArmEnableFiq ();
> - } else {
> - DebugAgentTimerSetPeriod (0);
> - ArmDisableFiq ();
> - }
> -
> - return FiqEnabled;
> -}
> -
> -
> -
> -VOID
> -GdbFPutString (
> - IN CHAR8 *String
> - );
> -
> -/**
> - Initialize debug agent.
> -
> - This function is used to set up debug environment to support source level debugging.
> - If certain Debug Agent Library instance has to save some private data in the stack,
> - this function must work on the mode that doesn't return to the caller, then
> - the caller needs to wrap up all rest of logic after InitializeDebugAgent() into one
> - function and pass it into InitializeDebugAgent(). InitializeDebugAgent() is
> - responsible to invoke the passing-in function at the end of InitializeDebugAgent().
> -
> - If the parameter Function is not NULL, Debug Agent Library instance will invoke it by
> - passing in the Context to be its parameter.
> -
> - If Function() is NULL, Debug Agent Library instance will return after setup debug
> - environment.
> -
> - @param[in] InitFlag Init flag is used to decide the initialize process.
> - @param[in] Context Context needed according to InitFlag; it was optional.
> - @param[in] Function Continue function called by debug agent library; it was
> - optional.
> -
> -**/
> -VOID
> -EFIAPI
> -InitializeDebugAgent (
> - IN UINT32 InitFlag,
> - IN VOID *Context, OPTIONAL
> - IN DEBUG_AGENT_CONTINUE Function OPTIONAL
> - )
> -{
> - UINTN Offset;
> - UINTN Length;
> - BOOLEAN IrqEnabled;
> - UINT64 *VectorBase;
> -
> -
> - //
> - // Disable interrupts
> - //
> - IrqEnabled = ArmGetInterruptState ();
> - ArmDisableInterrupts ();
> - ArmDisableFiq ();
> -
> - //
> - // Copy an implementation of the ARM exception vectors to PcdCpuVectorBaseAddress.
> - //
> - Length = (UINTN)ExceptionHandlersEnd - (UINTN)ExceptionHandlersStart;
> -
> - //
> - // Reserve space for the exception handlers
> - //
> - VectorBase = (UINT64 *)(UINTN)PcdGet64 (PcdCpuVectorBaseAddress);
> -
> -
> - // Copy our assembly code into the page that contains the exception vectors.
> - CopyMem ((VOID *)VectorBase, (VOID *)ExceptionHandlersStart, Length);
> -
> - //
> - // Patch in the common Assembly exception handler
> - //
> - Offset = (UINTN)CommonExceptionEntry - (UINTN)ExceptionHandlersStart;
> - *(UINTN *) (((UINT8 *)VectorBase) + Offset) = (UINTN)AsmCommonExceptionEntry;
> -
> - // Flush Caches since we updated executable stuff
> - InvalidateInstructionCacheRange ((VOID *)(UINTN)PcdGet64(PcdCpuVectorBaseAddress), Length);
> -
> - // setup a timer so gdb can break in via ctrl-c
> - DebugAgentTimerIntialize ();
> -
> - if (IrqEnabled) {
> - ArmEnableInterrupts ();
> - }
> -
> - if (Function != NULL) {
> - Function (Context);
> - }
> -
> - return;
> -}
> -
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c b/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c
> deleted file mode 100644
> index 80aa4765c0ef..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c
> +++ /dev/null
> @@ -1,815 +0,0 @@
> -/** @file
> - Debug Agent library implementition with empty functions.
> -
> - Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
> - This program and the accompanying materials
> - are licensed and made available under the terms and conditions of the BSD License
> - which accompanies this distribution. The full text of the license may be found at
> - http://opensource.org/licenses/bsd-license.php
> -
> - THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> - WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -
> -**/
> -
> -#include "GdbDebugAgent.h"
> -
> -
> -UINTN gMaxProcessorIndex = 0;
> -
> -//
> -// Buffers for basic gdb communication
> -//
> -CHAR8 gInBuffer[MAX_BUF_SIZE];
> -CHAR8 gOutBuffer[MAX_BUF_SIZE];
> -
> -
> -//
> -// Globals for returning XML from qXfer:libraries:read packet
> -//
> -UINTN gPacketqXferLibraryOffset = 0;
> -UINTN gEfiDebugImageTableEntry = 0;
> -CHAR8 gXferLibraryBuffer[2000];
> -
> -GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mHexToStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
> -
> -
> -// add-symbol-file c:/work/edk2/Build/BeagleBoard/DEBUG_GCC48/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll 0x80008360
> -CHAR8 *qXferHack = "<library name=\"c:/work/edk2/Build/BeagleBoard/DEBUG_GCC48/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll\"><segment address=\"0x80008360\"/></library>";
> -
> -UINTN
> -gXferObjectReadResponse (
> - IN CHAR8 Type,
> - IN CHAR8 *Str
> - )
> -{
> - CHAR8 *OutBufPtr; // pointer to the output buffer
> - CHAR8 Char;
> - UINTN Count;
> -
> - // responce starts with 'm' or 'l' if it is the end
> - OutBufPtr = gOutBuffer;
> - *OutBufPtr++ = Type;
> - Count = 1;
> -
> - // Binary data encoding
> - OutBufPtr = gOutBuffer;
> - while (*Str != '\0') {
> - Char = *Str++;
> - if ((Char == 0x7d) || (Char == 0x23) || (Char == 0x24) || (Char == 0x2a)) {
> - // escape character
> - *OutBufPtr++ = 0x7d;
> -
> - Char ^= 0x20;
> - }
> - *OutBufPtr++ = Char;
> - Count++;
> - }
> -
> - *OutBufPtr = '\0' ; // the end of the buffer
> - SendPacket (gOutBuffer);
> -
> - return Count;
> -}
> -
> -/**
> - Process "qXfer:object:read:annex:offset,length" request.
> -
> - Returns an XML document that contains loaded libraries. In our case it is
> - infomration in the EFI Debug Inmage Table converted into an XML document.
> -
> - GDB will call with an arbitrary length (it can't know the real length and
> - will reply with chunks of XML that are easy for us to deal with. Gdb will
> - keep calling until we say we are done. XML doc looks like:
> -
> - <library-list>
> - <library name="/a/a/c/d.dSYM"><segment address="0x10000000"/></library>
> - <library name="/a/m/e/e.pdb"><segment address="0x20000000"/></library>
> - <library name="/a/l/f/f.dll"><segment address="0x30000000"/></library>
> - </library-list>
> -
> - Since we can not allocate memory in interupt context this module has
> - assumptions about how it will get called:
> - 1) Length will generally be max remote packet size (big enough)
> - 2) First Offset of an XML document read needs to be 0
> - 3) This code will return back small chunks of the XML document on every read.
> - Each subseqent call will ask for the next available part of the document.
> -
> - Note: The only variable size element in the XML is:
> - " <library name=\"%s\"><segment address=\"%p\"/></library>\n" and it is
> - based on the file path and name of the symbol file. If the symbol file name
> - is bigger than the max gdb remote packet size we could update this code
> - to respond back in chunks.
> -
> - @param Offset offset into special data area
> - @param Length number of bytes to read starting at Offset
> -
> - **/
> -VOID
> -QxferLibrary (
> - IN UINTN Offset,
> - IN UINTN Length
> - )
> -{
> - gPacketqXferLibraryOffset += gXferObjectReadResponse ('m', "<library-list>\n");
> - gPacketqXferLibraryOffset += gXferObjectReadResponse ('m', qXferHack);
> - gXferObjectReadResponse ('l', "</library-list>\n");
> - gPacketqXferLibraryOffset = 0;
> -}
> -
> -/**
> - Transfer length bytes of input buffer, starting at Address, to memory.
> -
> - @param length the number of the bytes to be transferred/written
> - @param *address the start address of the transferring/writing the memory
> - @param *new_data the new data to be written to memory
> - **/
> -
> -VOID
> -TransferFromInBufToMem (
> - IN UINTN Length,
> - IN unsigned char *Address,
> - IN CHAR8 *NewData
> - )
> -{
> - CHAR8 c1;
> - CHAR8 c2;
> -
> - while (Length-- > 0) {
> - c1 = (CHAR8)HexCharToInt (*NewData++);
> - c2 = (CHAR8)HexCharToInt (*NewData++);
> -
> - if ((c1 < 0) || (c2 < 0)) {
> - SendError (GDB_EBADMEMDATA);
> - return;
> - }
> - *Address++ = (UINT8)((c1 << 4) + c2);
> - }
> -
> - SendSuccess();
> -}
> -
> -
> -/**
> - Transfer Length bytes of memory starting at Address to an output buffer, OutBuffer. This function will finally send the buffer
> - as a packet.
> -
> - @param Length the number of the bytes to be transferred/read
> - @param *address pointer to the start address of the transferring/reading the memory
> - **/
> -
> -VOID
> -TransferFromMemToOutBufAndSend (
> - IN UINTN Length,
> - IN unsigned char *Address
> - )
> -{
> - // there are Length bytes and every byte is represented as 2 hex chars
> - CHAR8 OutBuffer[MAX_BUF_SIZE];
> - CHAR8 *OutBufPtr; // pointer to the output buffer
> - CHAR8 Char;
> -
> - OutBufPtr = OutBuffer;
> - while (Length > 0) {
> -
> - Char = mHexToStr[*Address >> 4];
> - if ((Char >= 'A') && (Char <= 'F')) {
> - Char = Char - 'A' + 'a';
> - }
> - *OutBufPtr++ = Char;
> -
> - Char = mHexToStr[*Address & 0x0f];
> - if ((Char >= 'A') && (Char <= 'F')) {
> - Char = Char - 'A' + 'a';
> - }
> - *OutBufPtr++ = Char;
> -
> - Address++;
> - Length--;
> - }
> -
> - *OutBufPtr = '\0' ; // the end of the buffer
> - SendPacket (OutBuffer);
> -}
> -
> -
> -
> -/**
> - Send a GDB Remote Serial Protocol Packet
> -
> - $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
> - the packet teminating character '#' and the two digit checksum.
> -
> - If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
> - in an infinit loop. This is so if you unplug the debugger code just keeps running
> -
> - @param PacketData Payload data for the packet
> -
> -
> - @retval Number of bytes of packet data sent.
> -
> -**/
> -UINTN
> -SendPacket (
> - IN CHAR8 *PacketData
> - )
> -{
> - UINT8 CheckSum;
> - UINTN Timeout;
> - CHAR8 *Ptr;
> - CHAR8 TestChar;
> - UINTN Count;
> -
> - Timeout = PcdGet32 (PcdGdbMaxPacketRetryCount);
> -
> - Count = 0;
> - do {
> -
> - Ptr = PacketData;
> -
> - if (Timeout-- == 0) {
> - // Only try a finite number of times so we don't get stuck in the loop
> - return Count;
> - }
> -
> - // Packet prefix
> - GdbPutChar ('$');
> -
> - for (CheckSum = 0, Count =0 ; *Ptr != '\0'; Ptr++, Count++) {
> - GdbPutChar (*Ptr);
> - CheckSum = CheckSum + *Ptr;
> - }
> -
> - // Packet terminating character and checksum
> - GdbPutChar ('#');
> - GdbPutChar (mHexToStr[CheckSum >> 4]);
> - GdbPutChar (mHexToStr[CheckSum & 0x0F]);
> -
> - TestChar = GdbGetChar ();
> - } while (TestChar != '+');
> -
> - return Count;
> -}
> -
> -/**
> - Receive a GDB Remote Serial Protocol Packet
> -
> - $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
> - the packet teminating character '#' and the two digit checksum.
> -
> - If host re-starts sending a packet without ending the previous packet, only the last valid packet is processed.
> - (In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)
> -
> - If an ack '+' is not sent resend the packet
> -
> - @param PacketData Payload data for the packet
> -
> - @retval Number of bytes of packet data received.
> -
> -**/
> -UINTN
> -ReceivePacket (
> - OUT CHAR8 *PacketData,
> - IN UINTN PacketDataSize
> - )
> -{
> - UINT8 CheckSum;
> - UINTN Index;
> - CHAR8 Char;
> - CHAR8 SumString[3];
> - CHAR8 TestChar;
> -
> - ZeroMem (PacketData, PacketDataSize);
> -
> - for (;;) {
> - // wait for the start of a packet
> - TestChar = GdbGetChar ();
> - while (TestChar != '$') {
> - TestChar = GdbGetChar ();
> - };
> -
> - retry:
> - for (Index = 0, CheckSum = 0; Index < (PacketDataSize - 1); Index++) {
> - Char = GdbGetChar ();
> - if (Char == '$') {
> - goto retry;
> - }
> - if (Char == '#') {
> - break;
> - }
> -
> - PacketData[Index] = Char;
> - CheckSum = CheckSum + Char;
> - }
> - PacketData[Index] = '\0';
> -
> - if (Index == PacketDataSize) {
> - continue;
> - }
> -
> - SumString[0] = GdbGetChar ();
> - SumString[1] = GdbGetChar ();
> - SumString[2] = '\0';
> -
> - if (AsciiStrHexToUintn (SumString) == CheckSum) {
> - // Ack: Success
> - GdbPutChar ('+');
> -
> - // Null terminate the callers string
> - PacketData[Index] = '\0';
> - return Index;
> - } else {
> - // Ack: Failure
> - GdbPutChar ('-');
> - }
> - }
> -
> - //return 0;
> -}
> -
> -
> -/**
> - Empties the given buffer
> - @param Buf pointer to the first element in buffer to be emptied
> - **/
> -VOID
> -EmptyBuffer (
> - IN CHAR8 *Buf
> - )
> -{
> - *Buf = '\0';
> -}
> -
> -
> -/**
> - Converts an 8-bit Hex Char into a INTN.
> -
> - @param Char the hex character to be converted into UINTN
> - @retval a INTN, from 0 to 15, that corressponds to Char
> - -1 if Char is not a hex character
> - **/
> -INTN
> -HexCharToInt (
> - IN CHAR8 Char
> - )
> -{
> - if ((Char >= 'A') && (Char <= 'F')) {
> - return Char - 'A' + 10;
> - } else if ((Char >= 'a') && (Char <= 'f')) {
> - return Char - 'a' + 10;
> - } else if ((Char >= '0') && (Char <= '9')) {
> - return Char - '0';
> - } else { // if not a hex value, return a negative value
> - return -1;
> - }
> -}
> -
> - // 'E' + the biggest error number is 255, so its 2 hex digits + buffer end
> -CHAR8 *gError = "E__";
> -
> -/** 'E NN'
> - Send an error with the given error number after converting to hex.
> - The error number is put into the buffer in hex. '255' is the biggest errno we can send.
> - ex: 162 will be sent as A2.
> -
> - @param errno the error number that will be sent
> - **/
> -VOID
> -EFIAPI
> -SendError (
> - IN UINT8 ErrorNum
> - )
> -{
> - //
> - // Replace _, or old data, with current errno
> - //
> - gError[1] = mHexToStr [ErrorNum >> 4];
> - gError[2] = mHexToStr [ErrorNum & 0x0f];
> -
> - SendPacket (gError); // send buffer
> -}
> -
> -
> -
> -/**
> - Send 'OK' when the function is done executing successfully.
> - **/
> -VOID
> -EFIAPI
> -SendSuccess (
> - VOID
> - )
> -{
> - SendPacket ("OK"); // send buffer
> -}
> -
> -
> -/**
> - Send empty packet to specify that particular command/functionality is not supported.
> - **/
> -VOID
> -EFIAPI
> -SendNotSupported (
> - VOID
> - )
> -{
> - SendPacket ("");
> -}
> -
> -
> -
> -
> -
> -/**
> - Translates the EFI mapping to GDB mapping
> -
> - @param EFIExceptionType EFI Exception that is being processed
> - @retval UINTN that corresponds to EFIExceptionType's GDB exception type number
> - **/
> -UINT8
> -ConvertEFItoGDBtype (
> - IN EFI_EXCEPTION_TYPE EFIExceptionType
> - )
> -{
> - UINTN i;
> -
> - for (i=0; i < MaxEfiException() ; i++) {
> - if (gExceptionType[i].Exception == EFIExceptionType) {
> - return gExceptionType[i].SignalNo;
> - }
> - }
> - return GDB_SIGTRAP; // this is a GDB trap
> -}
> -
> -
> -/** "m addr,length"
> - Find the Length of the area to read and the start addres. Finally, pass them to
> - another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
> - send it as a packet.
> - **/
> -
> -VOID
> -EFIAPI
> -ReadFromMemory (
> - CHAR8 *PacketData
> - )
> -{
> - UINTN Address;
> - UINTN Length;
> - CHAR8 AddressBuffer[MAX_ADDR_SIZE]; // the buffer that will hold the address in hex chars
> - CHAR8 *AddrBufPtr; // pointer to the address buffer
> - CHAR8 *InBufPtr; /// pointer to the input buffer
> -
> - AddrBufPtr = AddressBuffer;
> - InBufPtr = &PacketData[1];
> - while (*InBufPtr != ',') {
> - *AddrBufPtr++ = *InBufPtr++;
> - }
> - *AddrBufPtr = '\0';
> -
> - InBufPtr++; // this skips ',' in the buffer
> -
> - /* Error checking */
> - if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
> - SendError (GDB_EBADMEMADDRBUFSIZE);
> - return;
> - }
> -
> - // 2 = 'm' + ','
> - if (AsciiStrLen(PacketData) - AsciiStrLen(AddressBuffer) - 2 >= MAX_LENGTH_SIZE) {
> - SendError (GDB_EBADMEMLENGTH);
> - return;
> - }
> -
> - Address = AsciiStrHexToUintn (AddressBuffer);
> - Length = AsciiStrHexToUintn (InBufPtr);
> -
> - TransferFromMemToOutBufAndSend (Length, (unsigned char *)Address);
> -}
> -
> -
> -/** "M addr,length :XX..."
> - Find the Length of the area in bytes to write and the start addres. Finally, pass them to
> - another function, TransferFromInBufToMem, that will write to that memory space the info in
> - the input buffer.
> - **/
> -VOID
> -EFIAPI
> -WriteToMemory (
> - IN CHAR8 *PacketData
> - )
> -{
> - UINTN Address;
> - UINTN Length;
> - UINTN MessageLength;
> - CHAR8 AddressBuffer[MAX_ADDR_SIZE]; // the buffer that will hold the Address in hex chars
> - CHAR8 LengthBuffer[MAX_LENGTH_SIZE]; // the buffer that will hold the Length in hex chars
> - CHAR8 *AddrBufPtr; // pointer to the Address buffer
> - CHAR8 *LengthBufPtr; // pointer to the Length buffer
> - CHAR8 *InBufPtr; /// pointer to the input buffer
> -
> - AddrBufPtr = AddressBuffer;
> - LengthBufPtr = LengthBuffer;
> - InBufPtr = &PacketData[1];
> -
> - while (*InBufPtr != ',') {
> - *AddrBufPtr++ = *InBufPtr++;
> - }
> - *AddrBufPtr = '\0';
> -
> - InBufPtr++; // this skips ',' in the buffer
> -
> - while (*InBufPtr != ':') {
> - *LengthBufPtr++ = *InBufPtr++;
> - }
> - *LengthBufPtr = '\0';
> -
> - InBufPtr++; // this skips ':' in the buffer
> -
> - Address = AsciiStrHexToUintn (AddressBuffer);
> - Length = AsciiStrHexToUintn (LengthBuffer);
> -
> - /* Error checking */
> -
> - //Check if Address is not too long.
> - if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
> - SendError (GDB_EBADMEMADDRBUFSIZE);
> - return;
> - }
> -
> - //Check if message length is not too long
> - if (AsciiStrLen(LengthBuffer) >= MAX_LENGTH_SIZE) {
> - SendError (GDB_EBADMEMLENGBUFSIZE);
> - return;
> - }
> -
> - // Check if Message is not too long/short.
> - // 3 = 'M' + ',' + ':'
> - MessageLength = (AsciiStrLen(PacketData) - AsciiStrLen(AddressBuffer) - AsciiStrLen(LengthBuffer) - 3);
> - if (MessageLength != (2*Length)) {
> - //Message too long/short. New data is not the right size.
> - SendError (GDB_EBADMEMDATASIZE);
> - return;
> - }
> - TransferFromInBufToMem (Length, (unsigned char *)Address, InBufPtr);
> -}
> -
> -/**
> - Parses breakpoint packet data and captures Breakpoint type, Address and length.
> - In case of an error, function returns particular error code. Returning 0 meaning
> - no error.
> -
> - @param PacketData Pointer to the payload data for the packet.
> - @param Type Breakpoint type
> - @param Address Breakpoint address
> - @param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
> -
> - @retval 1 Success
> - @retval {other} Particular error code
> -
> -**/
> -UINTN
> -ParseBreakpointPacket (
> - IN CHAR8 *PacketData,
> - OUT UINTN *Type,
> - OUT UINTN *Address,
> - OUT UINTN *Length
> - )
> -{
> - CHAR8 AddressBuffer[MAX_ADDR_SIZE];
> - CHAR8 *AddressBufferPtr;
> - CHAR8 *PacketDataPtr;
> -
> - PacketDataPtr = &PacketData[1];
> - AddressBufferPtr = AddressBuffer;
> -
> - *Type = AsciiStrHexToUintn (PacketDataPtr);
> -
> - //Breakpoint/watchpoint type should be between 0 to 4
> - if (*Type > 4) {
> - return 22; //EINVAL: Invalid argument.
> - }
> -
> - //Skip ',' in the buffer.
> - while (*PacketDataPtr++ != ',');
> -
> - //Parse Address information
> - while (*PacketDataPtr != ',') {
> - *AddressBufferPtr++ = *PacketDataPtr++;
> - }
> - *AddressBufferPtr = '\0';
> -
> - //Check if Address is not too long.
> - if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
> - return 40; //EMSGSIZE: Message size too long.
> - }
> -
> - *Address = AsciiStrHexToUintn (AddressBuffer);
> -
> - PacketDataPtr++; //This skips , in the buffer
> -
> - //Parse Length information
> - *Length = AsciiStrHexToUintn (PacketDataPtr);
> -
> - //Length should be 1, 2 or 4 bytes
> - if (*Length > 4) {
> - return 22; //EINVAL: Invalid argument
> - }
> -
> - return 0; //0 = No error
> -}
> -
> -
> -
> -/**
> - Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
> -
> - @param SystemContext Register content at time of the exception
> - @param GdbExceptionType GDB exception type
> - **/
> -VOID
> -GdbSendTSignal (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINT8 GdbExceptionType
> - )
> -{
> - CHAR8 TSignalBuffer[128];
> - CHAR8 *TSignalPtr;
> -
> - TSignalPtr = &TSignalBuffer[0];
> -
> - //Construct TSignal packet
> - *TSignalPtr++ = 'T';
> -
> - //
> - // replace _, or previous value, with Exception type
> - //
> - *TSignalPtr++ = mHexToStr [GdbExceptionType >> 4];
> - *TSignalPtr++ = mHexToStr [GdbExceptionType & 0x0f];
> -
> - ProcessorSendTSignal (SystemContext, GdbExceptionType, TSignalPtr, sizeof (TSignalBuffer) - 2);
> -
> - SendPacket (TSignalBuffer);
> -}
> -
> -VOID
> -GdbFWrite (
> - IN UINTN Fd,
> - IN CHAR8 *Data,
> - IN UINTN DataSize
> - )
> -{
> - CHAR8 Buffer[128];
> -
> - AsciiSPrint (Buffer, sizeof (Buffer), "Fwrite,%x,%x,%x", Fd, Data, DataSize);
> - SendPacket (Buffer);
> -
> - for( ; ; ) {
> - ReceivePacket (gInBuffer, MAX_BUF_SIZE);
> -
> - switch (gInBuffer[0]) {
> - case 'm':
> - ReadFromMemory (gInBuffer);
> - break;
> -
> - case 'M':
> - WriteToMemory (gInBuffer);
> - break;
> -
> - case 'F':
> - return;
> - }
> - }
> -}
> -
> -
> -VOID
> -GdbFPutString (
> - IN CHAR8 *String
> - )
> -{
> - UINTN Len = AsciiStrSize (String);
> -
> - GdbFWrite (2, String, Len);
> -}
> -
> -
> -/**
> - Exception Hanldler for GDB. It will be called for all exceptions
> - registered via the gExceptionType[] array.
> -
> - @param ExceptionType Exception that is being processed
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -GdbExceptionHandler (
> - IN EFI_EXCEPTION_TYPE ExceptionType,
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - UINT8 GdbExceptionType;
> - CHAR8 *Ptr;
> -
> - if (ProcessorControlC (ExceptionType, SystemContext)) {
> - // We tried to process a control C handler and there is nothing to do
> - return;
> - }
> -
> - GdbExceptionType = ConvertEFItoGDBtype (ExceptionType);
> - GdbSendTSignal (SystemContext, GdbExceptionType);
> -
> - for( ; ; ) {
> - ReceivePacket (gInBuffer, MAX_BUF_SIZE);
> -
> - switch (gInBuffer[0]) {
> - case '?':
> - GdbSendTSignal (SystemContext, GdbExceptionType);
> - break;
> -
> - case 'c':
> - ContinueAtAddress (SystemContext, gInBuffer);
> - return;
> -
> - case 'D':
> - // gdb wants to disconnect so return "OK" packet since.
> - SendSuccess ();
> - return;
> -
> - case 'g':
> - ReadGeneralRegisters (SystemContext);
> - break;
> -
> - case 'G':
> - WriteGeneralRegisters (SystemContext, gInBuffer);
> - break;
> -
> - case 'H':
> - //Return "OK" packet since we don't have more than one thread.
> - SendSuccess ();
> - break;
> -
> - case 'm':
> - ReadFromMemory (gInBuffer);
> - break;
> -
> - case 'M':
> - WriteToMemory (gInBuffer);
> - break;
> -
> - case 'P':
> - WriteNthRegister (SystemContext, gInBuffer);
> - break;
> -
> - //
> - // Still debugging this code. Not used in Darwin
> - //
> - case 'q':
> - // General Query Packets
> - if (AsciiStrnCmp (gInBuffer, "qSupported", 10) == 0) {
> - // return what we currently support, we don't parse what gdb suports
> - AsciiSPrint (gOutBuffer, MAX_BUF_SIZE, "qXfer:libraries:read+;PacketSize=%d", MAX_BUF_SIZE);
> - SendPacket (gOutBuffer);
> - } else if (AsciiStrnCmp (gInBuffer, "qXfer:libraries:read::", 22) == 0) {
> - // ?qXfer:libraries:read::offset,length
> - // gInBuffer[22] is offset string, ++Ptr is length string?
> - for (Ptr = &gInBuffer[22]; *Ptr != ','; Ptr++);
> -
> - // Not sure if multi-radix support is required. Currently only support decimal
> - QxferLibrary (AsciiStrHexToUintn (&gInBuffer[22]), AsciiStrHexToUintn (++Ptr));
> - } else if (AsciiStrnCmp (gInBuffer, "qOffsets", 8) == 0) {
> - AsciiSPrint (gOutBuffer, MAX_BUF_SIZE, "Text=1000;Data=f000;Bss=f000");
> - SendPacket (gOutBuffer);
> - } else if (AsciiStrnCmp (gInBuffer, "qAttached", 9) == 0) {
> - // remote server attached to an existing process
> - SendPacket ("1");
> - } else {
> - //Send empty packet
> - SendNotSupported ();
> - }
> - break;
> -
> - case 's':
> - SingleStep (SystemContext, gInBuffer);
> - return;
> -
> - case 'z':
> - RemoveBreakPoint (SystemContext, gInBuffer);
> - break;
> -
> - case 'Z':
> - InsertBreakPoint (SystemContext, gInBuffer);
> - break;
> -
> - default:
> - //Send empty packet
> - SendNotSupported ();
> - break;
> - }
> - }
> -}
> -
> -
> -
> -
> -
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c b/EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c
> deleted file mode 100644
> index f1d7f3f1098a..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c
> +++ /dev/null
> @@ -1,951 +0,0 @@
> -/** @file
> - Processor specific parts of the GDB stub
> -
> - Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> -
> - This program and the accompanying materials
> - are licensed and made available under the terms and conditions of the BSD License
> - which accompanies this distribution. The full text of the license may be found at
> - http://opensource.org/licenses/bsd-license.php
> -
> - THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> - WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -
> -**/
> -
> -#include <GdbDebugAgent.h>
> -
> -//
> -// Array of exception types that need to be hooked by the debugger
> -// {EFI mapping, GDB mapping}
> -//
> -EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
> - { EXCEPT_IA32_DIVIDE_ERROR, GDB_SIGFPE },
> - { EXCEPT_IA32_DEBUG, GDB_SIGTRAP },
> - { EXCEPT_IA32_NMI, GDB_SIGEMT },
> - { EXCEPT_IA32_BREAKPOINT, GDB_SIGTRAP },
> - { EXCEPT_IA32_OVERFLOW, GDB_SIGSEGV },
> - { EXCEPT_IA32_BOUND, GDB_SIGSEGV },
> - { EXCEPT_IA32_INVALID_OPCODE, GDB_SIGILL },
> - { EXCEPT_IA32_DOUBLE_FAULT, GDB_SIGEMT },
> - { EXCEPT_IA32_STACK_FAULT, GDB_SIGSEGV },
> - { EXCEPT_IA32_GP_FAULT, GDB_SIGSEGV },
> - { EXCEPT_IA32_PAGE_FAULT, GDB_SIGSEGV },
> - { EXCEPT_IA32_FP_ERROR, GDB_SIGEMT },
> - { EXCEPT_IA32_ALIGNMENT_CHECK, GDB_SIGEMT },
> - { EXCEPT_IA32_MACHINE_CHECK, GDB_SIGEMT }
> -};
> -
> -
> -// The offsets of registers SystemContext.
> -// The fields in the array are in the gdb ordering.
> -//
> -//16 regs
> -UINTN gRegisterOffsets[] = {
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Eax),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ecx),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Edx),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ebx),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Esp),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ebp),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Esi),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Edi),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Eip),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Eflags),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Cs),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ss),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Ds),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Es),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Fs),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_IA32, Gs)
> -};
> -
> -
> -//Debug only..
> -VOID
> -PrintReg (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - Print ((CHAR16 *)L"EAX: %x ", SystemContext.SystemContextIa32->Eax);
> - Print ((CHAR16 *)L"ECX: %x ", SystemContext.SystemContextIa32->Ecx);
> - Print ((CHAR16 *)L"EDX: %x ", SystemContext.SystemContextIa32->Edx);
> - Print ((CHAR16 *)L"EBX: %x ", SystemContext.SystemContextIa32->Ebx);
> - Print ((CHAR16 *)L"ESP: %x ", SystemContext.SystemContextIa32->Esp);
> - Print ((CHAR16 *)L"EBP: %x ", SystemContext.SystemContextIa32->Ebp);
> - Print ((CHAR16 *)L"ESI: %x ", SystemContext.SystemContextIa32->Esi);
> - Print ((CHAR16 *)L"EDI: %x ", SystemContext.SystemContextIa32->Edi);
> - Print ((CHAR16 *)L"EIP: %x\n", SystemContext.SystemContextIa32->Eip);
> - Print ((CHAR16 *)L"EFlags: %x\n", SystemContext.SystemContextIa32->Eflags);
> -}
> -
> -//Debug only..
> -VOID
> -PrintDRreg (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - Print ((CHAR16 *)L"DR0: %x ", SystemContext.SystemContextIa32->Dr0);
> - Print ((CHAR16 *)L"DR1: %x ", SystemContext.SystemContextIa32->Dr1);
> - Print ((CHAR16 *)L"DR2: %x ", SystemContext.SystemContextIa32->Dr2);
> - Print ((CHAR16 *)L"DR3: %x ", SystemContext.SystemContextIa32->Dr3);
> - Print ((CHAR16 *)L"DR6: %x ", SystemContext.SystemContextIa32->Dr6);
> - Print ((CHAR16 *)L"DR7: %x\n", SystemContext.SystemContextIa32->Dr7);
> -}
> -
> -
> -/**
> - Return the number of entries in the gExceptionType[]
> -
> - @retval UINTN, the number of entries in the gExceptionType[] array.
> - **/
> -UINTN
> -MaxEfiException (
> - VOID
> - )
> -{
> - return sizeof (gExceptionType)/sizeof (EFI_EXCEPTION_TYPE_ENTRY);
> -}
> -
> -
> -/**
> - Check to see if the ISA is supported.
> - ISA = Instruction Set Architecture
> -
> - @retval TRUE if Isa is supported,
> - FALSE otherwise.
> -**/
> -BOOLEAN
> -CheckIsa (
> - IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
> - )
> -{
> - return (BOOLEAN)(Isa == IsaIa32);
> -}
> -
> -
> -/**
> - This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
> - It is, by default, set to find the register pointer of the IA32 member
> -
> - @param SystemContext Register content at time of the exception
> - @param RegNumber The register to which we want to find a pointer
> - @retval the pointer to the RegNumber-th pointer
> - **/
> -UINTN *
> -FindPointerToRegister(
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber
> - )
> -{
> - UINT8 *TempPtr;
> - TempPtr = ((UINT8 *)SystemContext.SystemContextIa32) + gRegisterOffsets[RegNumber];
> - return (UINTN *)TempPtr;
> -}
> -
> -
> -/**
> - Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
> -
> - @param SystemContext Register content at time of the exception
> - @param RegNumber the number of the register that we want to read
> - @param OutBufPtr pointer to the output buffer's end. the new data will be added from this point on.
> - @retval the pointer to the next character of the output buffer that is available to be written on.
> - **/
> -CHAR8 *
> -BasicReadRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *OutBufPtr
> - )
> -{
> - UINTN RegSize;
> -
> - RegSize = 0;
> - while (RegSize < REG_SIZE) {
> - *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
> - *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> RegSize) & 0xf)];
> - RegSize = RegSize + 8;
> - }
> - return OutBufPtr;
> -}
> -
> -
> -/** ‘p n’
> - Reads the n-th register's value into an output buffer and sends it as a packet
> -
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Pointer to the input buffer received from gdb server
> - **/
> -VOID
> -EFIAPI
> -ReadNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN RegNumber;
> - CHAR8 OutBuffer[9]; // 1 reg=8 hex chars, and the end '\0' (escape seq)
> - CHAR8 *OutBufPtr; // pointer to the output buffer
> -
> - RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
> -
> - if ((RegNumber < 0) || (RegNumber >= sizeof (gRegisterOffsets)/sizeof (UINTN))) {
> - SendError (GDB_EINVALIDREGNUM);
> - return;
> - }
> -
> - OutBufPtr = OutBuffer;
> - OutBufPtr = BasicReadRegister(SystemContext, RegNumber, OutBufPtr);
> -
> - *OutBufPtr = '\0'; // the end of the buffer
> - SendPacket(OutBuffer);
> -}
> -
> -
> -/** ‘g’
> - Reads the general registers into an output buffer and sends it as a packet
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -ReadGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - UINTN i;
> - CHAR8 OutBuffer[129]; // 16 regs, 8 hex chars each, and the end '\0' (escape seq)
> - CHAR8 *OutBufPtr; // pointer to the output buffer
> -
> - OutBufPtr = OutBuffer;
> - for(i = 0 ; i < sizeof (gRegisterOffsets)/sizeof (UINTN) ; i++) { // there are only 16 registers to read
> - OutBufPtr = BasicReadRegister(SystemContext, i, OutBufPtr);
> - }
> -
> - *OutBufPtr = '\0'; // the end of the buffer
> - SendPacket(OutBuffer);
> -}
> -
> -
> -/**
> - Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
> -
> - @param SystemContext Register content at time of the exception
> - @param RegNumber the number of the register that we want to write
> - @param InBufPtr pointer to the output buffer. the new data will be extracted from the input buffer from this point on.
> - @retval the pointer to the next character of the input buffer that can be used
> - **/
> -CHAR8 *
> -BasicWriteRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *InBufPtr
> - )
> -{
> - UINTN RegSize;
> - UINTN TempValue; // the value transferred from a hex char
> - UINT32 NewValue; // the new value of the RegNumber-th Register
> -
> - NewValue = 0;
> - RegSize = 0;
> - while (RegSize < REG_SIZE) {
> - TempValue = HexCharToInt(*InBufPtr++);
> -
> - if (TempValue < 0) {
> - SendError (GDB_EBADMEMDATA);
> - return NULL;
> - }
> -
> - NewValue += (TempValue << (RegSize+4));
> - TempValue = HexCharToInt(*InBufPtr++);
> -
> - if (TempValue < 0) {
> - SendError (GDB_EBADMEMDATA);
> - return NULL;
> - }
> -
> - NewValue += (TempValue << RegSize);
> - RegSize = RegSize + 8;
> - }
> - *(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
> - return InBufPtr;
> -}
> -
> -
> -/** ‘P n...=r...’
> - Writes the new value of n-th register received into the input buffer to the n-th register
> -
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Ponter to the input buffer received from gdb server
> - **/
> -VOID
> -EFIAPI
> -WriteNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN RegNumber;
> - CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
> - CHAR8 *RegNumBufPtr;
> - CHAR8 *InBufPtr; // pointer to the input buffer
> -
> - // find the register number to write
> - InBufPtr = &InBuffer[1];
> - RegNumBufPtr = RegNumBuffer;
> - while (*InBufPtr != '=') {
> - *RegNumBufPtr++ = *InBufPtr++;
> - }
> - *RegNumBufPtr = '\0';
> - RegNumber = AsciiStrHexToUintn (RegNumBuffer);
> -
> - // check if this is a valid Register Number
> - if ((RegNumber < 0) || (RegNumber >= sizeof (gRegisterOffsets)/sizeof (UINTN))) {
> - SendError (GDB_EINVALIDREGNUM);
> - return;
> - }
> - InBufPtr++; // skips the '=' character
> - BasicWriteRegister (SystemContext, RegNumber, InBufPtr);
> - SendSuccess();
> -}
> -
> -
> -/** ‘G XX...’
> - Writes the new values received into the input buffer to the general registers
> -
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Pointer to the input buffer received from gdb server
> - **/
> -VOID
> -EFIAPI
> -WriteGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN i;
> - CHAR8 *InBufPtr; /// pointer to the input buffer
> -
> - // check to see if the buffer is the right size which is
> - // 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 129
> - if (AsciiStrLen(InBuffer) != 129) { // 16 regs, 8 hex chars each, and the end '\0' (escape seq)
> - //Bad message. Message is not the right length
> - SendError (GDB_EBADBUFSIZE);
> - return;
> - }
> -
> - InBufPtr = &InBuffer[1];
> -
> - // Read the new values for the registers from the input buffer to an array, NewValueArray.
> - // The values in the array are in the gdb ordering
> - for(i=0; i < sizeof (gRegisterOffsets)/sizeof (UINTN); i++) { // there are only 16 registers to write
> - InBufPtr = BasicWriteRegister(SystemContext, i, InBufPtr);
> - }
> -
> - SendSuccess();
> -}
> -
> -/** ‘c [addr ]’
> - Continue. addr is Address to resume. If addr is omitted, resume at current
> - Address.
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -ContinueAtAddress (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - if (PacketData[1] != '\0') {
> - SystemContext.SystemContextIa32->Eip = AsciiStrHexToUintn (&PacketData[1]);
> - }
> -}
> -
> -
> -/** ‘s [addr ]’
> - Single step. addr is the Address at which to resume. If addr is omitted, resume
> - at same Address.
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -SingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - SendNotSupported();
> -}
> -
> -
> -/**
> - Returns breakpoint data address from DR0-DR3 based on the input breakpoint number
> -
> - @param SystemContext Register content at time of the exception
> - @param BreakpointNumber Breakpoint number
> -
> - @retval Address Data address from DR0-DR3 based on the breakpoint number.
> -
> -**/
> -UINTN
> -GetBreakpointDataAddress (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN BreakpointNumber
> - )
> -{
> - UINTN Address;
> -
> - if (BreakpointNumber == 1) {
> - Address = SystemContext.SystemContextIa32->Dr0;
> - } else if (BreakpointNumber == 2) {
> - Address = SystemContext.SystemContextIa32->Dr1;
> - } else if (BreakpointNumber == 3) {
> - Address = SystemContext.SystemContextIa32->Dr2;
> - } else if (BreakpointNumber == 4) {
> - Address = SystemContext.SystemContextIa32->Dr3;
> - } else {
> - Address = 0;
> - }
> -
> - return Address;
> -}
> -
> -
> -/**
> - Returns currently detected breakpoint value based on the register DR6 B0-B3 field.
> - If no breakpoint is detected then it returns 0.
> -
> - @param SystemContext Register content at time of the exception
> -
> - @retval {1-4} Currently detected breakpoint value
> - @retval 0 No breakpoint detected.
> -
> -**/
> -UINTN
> -GetBreakpointDetected (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - IA32_DR6 Dr6;
> - UINTN BreakpointNumber;
> -
> - Dr6.UintN = SystemContext.SystemContextIa32->Dr6;
> -
> - if (Dr6.Bits.B0 == 1) {
> - BreakpointNumber = 1;
> - } else if (Dr6.Bits.B1 == 1) {
> - BreakpointNumber = 2;
> - } else if (Dr6.Bits.B2 == 1) {
> - BreakpointNumber = 3;
> - } else if (Dr6.Bits.B3 == 1) {
> - BreakpointNumber = 4;
> - } else {
> - BreakpointNumber = 0; //No breakpoint detected
> - }
> -
> - return BreakpointNumber;
> -}
> -
> -
> -/**
> - Returns Breakpoint type (InstructionExecution, DataWrite, DataRead or DataReadWrite)
> - based on the Breakpoint number
> -
> - @param SystemContext Register content at time of the exception
> - @param BreakpointNumber Breakpoint number
> -
> - @retval BREAK_TYPE Breakpoint type value read from register DR7 RWn field
> - For unknown value, it returns NotSupported.
> -
> -**/
> -BREAK_TYPE
> -GetBreakpointType (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN BreakpointNumber
> - )
> -{
> - IA32_DR7 Dr7;
> - BREAK_TYPE Type = NotSupported; //Default is NotSupported type
> -
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (BreakpointNumber == 1) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW0;
> - } else if (BreakpointNumber == 2) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW1;
> - } else if (BreakpointNumber == 3) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW2;
> - } else if (BreakpointNumber == 4) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW3;
> - }
> -
> - return Type;
> -}
> -
> -
> -/**
> - Parses Length and returns the length which DR7 LENn field accepts.
> - For example: If we receive 1-Byte length then we should return 0.
> - Zero gets written to DR7 LENn field.
> -
> - @param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
> -
> - @retval Length Appropriate converted values which DR7 LENn field accepts.
> -
> -**/
> -UINTN
> -ConvertLengthData (
> - IN UINTN Length
> - )
> -{
> - if (Length == 1) { //1-Byte length
> - return 0;
> - } else if (Length == 2) { //2-Byte length
> - return 1;
> - } else if (Length == 4) { //4-Byte length
> - return 3;
> - } else { //Undefined or 8-byte length
> - return 2;
> - }
> -}
> -
> -
> -/**
> - Finds the next free debug register. If all the registers are occupied then
> - EFI_OUT_OF_RESOURCES is returned.
> -
> - @param SystemContext Register content at time of the exception
> - @param Register Register value (0 - 3 for the first free debug register)
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -FindNextFreeDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - OUT UINTN *Register
> - )
> -{
> - IA32_DR7 Dr7;
> -
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (Dr7.Bits.G0 == 0) {
> - *Register = 0;
> - } else if (Dr7.Bits.G1 == 0) {
> - *Register = 1;
> - } else if (Dr7.Bits.G2 == 0) {
> - *Register = 2;
> - } else if (Dr7.Bits.G3 == 0) {
> - *Register = 3;
> - } else {
> - return EFI_OUT_OF_RESOURCES;
> - }
> -
> - return EFI_SUCCESS;
> -}
> -
> -
> -/**
> - Enables the debug register. Writes Address value to appropriate DR0-3 register.
> - Sets LENn, Gn, RWn bits in DR7 register.
> -
> - @param SystemContext Register content at time of the exception
> - @param Register Register value (0 - 3)
> - @param Address Breakpoint address value
> - @param Type Breakpoint type (Instruction, Data write, Data read
> - or write etc.)
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -EnableDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Register,
> - IN UINTN Address,
> - IN UINTN Length,
> - IN UINTN Type
> - )
> -{
> - IA32_DR7 Dr7;
> -
> - //Convert length data
> - Length = ConvertLengthData (Length);
> -
> - //For Instruction execution, length should be 0
> - //(Ref. Intel reference manual 18.2.4)
> - if ((Type == 0) && (Length != 0)) {
> - return EFI_INVALID_PARAMETER;
> - }
> -
> - //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
> - //software breakpoint. We should send empty packet in both these cases.
> - if ((Type == (BREAK_TYPE)DataRead) ||
> - (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
> - return EFI_UNSUPPORTED;
> - }
> -
> - //Read DR7 so appropriate Gn, RWn and LENn bits can be modified.
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (Register == 0) {
> - SystemContext.SystemContextIa32->Dr0 = Address;
> - Dr7.Bits.G0 = 1;
> - Dr7.Bits.RW0 = Type;
> - Dr7.Bits.LEN0 = Length;
> - } else if (Register == 1) {
> - SystemContext.SystemContextIa32->Dr1 = Address;
> - Dr7.Bits.G1 = 1;
> - Dr7.Bits.RW1 = Type;
> - Dr7.Bits.LEN1 = Length;
> - } else if (Register == 2) {
> - SystemContext.SystemContextIa32->Dr2 = Address;
> - Dr7.Bits.G2 = 1;
> - Dr7.Bits.RW2 = Type;
> - Dr7.Bits.LEN2 = Length;
> - } else if (Register == 3) {
> - SystemContext.SystemContextIa32->Dr3 = Address;
> - Dr7.Bits.G3 = 1;
> - Dr7.Bits.RW3 = Type;
> - Dr7.Bits.LEN3 = Length;
> - } else {
> - return EFI_INVALID_PARAMETER;
> - }
> -
> - //Update Dr7 with appropriate Gn, RWn and LENn bits
> - SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
> -
> - return EFI_SUCCESS;
> -}
> -
> -
> -/**
> - Returns register number 0 - 3 for the maching debug register.
> - This function compares incoming Address, Type, Length and
> - if there is a match then it returns the appropriate register number.
> - In case of mismatch, function returns EFI_NOT_FOUND message.
> -
> - @param SystemContext Register content at time of the exception
> - @param Address Breakpoint address value
> - @param Length Breakpoint length value
> - @param Type Breakpoint type (Instruction, Data write,
> - Data read or write etc.)
> - @param Register Register value to be returned
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -FindMatchingDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Address,
> - IN UINTN Length,
> - IN UINTN Type,
> - OUT UINTN *Register
> - )
> -{
> - IA32_DR7 Dr7;
> -
> - //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
> - //software breakpoint. We should send empty packet in both these cases.
> - if ((Type == (BREAK_TYPE)DataRead) ||
> - (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
> - return EFI_UNSUPPORTED;
> - }
> -
> - //Convert length data
> - Length = ConvertLengthData(Length);
> -
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if ((Dr7.Bits.G0 == 1) &&
> - (Dr7.Bits.LEN0 == Length) &&
> - (Dr7.Bits.RW0 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr0)) {
> - *Register = 0;
> - } else if ((Dr7.Bits.G1 == 1) &&
> - (Dr7.Bits.LEN1 == Length) &&
> - (Dr7.Bits.RW1 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr1)) {
> - *Register = 1;
> - } else if ((Dr7.Bits.G2 == 1) &&
> - (Dr7.Bits.LEN2 == Length) &&
> - (Dr7.Bits.RW2 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr2)) {
> - *Register = 2;
> - } else if ((Dr7.Bits.G3 == 1) &&
> - (Dr7.Bits.LEN3 == Length) &&
> - (Dr7.Bits.RW3 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr3)) {
> - *Register = 3;
> - } else {
> - Print ((CHAR16 *)L"No match found..\n");
> - return EFI_NOT_FOUND;
> - }
> -
> - return EFI_SUCCESS;
> -}
> -
> -
> -/**
> - Disables the particular debug register.
> -
> - @param SystemContext Register content at time of the exception
> - @param Register Register to be disabled
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -DisableDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Register
> - )
> -{
> - IA32_DR7 Dr7;
> - UINTN Address = 0;
> -
> - //Read DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (Register == 0) {
> - SystemContext.SystemContextIa32->Dr0 = Address;
> - Dr7.Bits.G0 = 0;
> - Dr7.Bits.RW0 = 0;
> - Dr7.Bits.LEN0 = 0;
> - } else if (Register == 1) {
> - SystemContext.SystemContextIa32->Dr1 = Address;
> - Dr7.Bits.G1 = 0;
> - Dr7.Bits.RW1 = 0;
> - Dr7.Bits.LEN1 = 0;
> - } else if (Register == 2) {
> - SystemContext.SystemContextIa32->Dr2 = Address;
> - Dr7.Bits.G2 = 0;
> - Dr7.Bits.RW2 = 0;
> - Dr7.Bits.LEN2 = 0;
> - } else if (Register == 3) {
> - SystemContext.SystemContextIa32->Dr3 = Address;
> - Dr7.Bits.G3 = 0;
> - Dr7.Bits.RW3 = 0;
> - Dr7.Bits.LEN3 = 0;
> - } else {
> - return EFI_INVALID_PARAMETER;
> - }
> -
> - //Update DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
> - SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
> -
> - return EFI_SUCCESS;
> -}
> -
> -
> -/**
> - ‘Z1, [addr], [length]’
> - ‘Z2, [addr], [length]’
> - ‘Z3, [addr], [length]’
> - ‘Z4, [addr], [length]’
> -
> - Insert hardware breakpoint/watchpoint at address addr of size length
> -
> - @param SystemContext Register content at time of the exception
> - @param *PacketData Pointer to the Payload data for the packet
> -
> -**/
> -VOID
> -EFIAPI
> -InsertBreakPoint (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - UINTN Type;
> - UINTN Address;
> - UINTN Length;
> - UINTN Register;
> - EFI_STATUS Status;
> - BREAK_TYPE BreakType = NotSupported;
> - UINTN ErrorCode;
> -
> - ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
> - if (ErrorCode > 0) {
> - SendError ((UINT8)ErrorCode);
> - return;
> - }
> -
> - switch (Type) {
> -
> - case 0: //Software breakpoint
> - BreakType = SoftwareBreakpoint;
> - break;
> -
> - case 1: //Hardware breakpoint
> - BreakType = InstructionExecution;
> - break;
> -
> - case 2: //Write watchpoint
> - BreakType = DataWrite;
> - break;
> -
> - case 3: //Read watchpoint
> - BreakType = DataRead;
> - break;
> -
> - case 4: //Access watchpoint
> - BreakType = DataReadWrite;
> - break;
> -
> - default :
> - Print ((CHAR16 *)L"Insert breakpoint default: %x\n", Type);
> - SendError (GDB_EINVALIDBRKPOINTTYPE);
> - return;
> - }
> -
> - // Find next free debug register
> - Status = FindNextFreeDebugRegister (SystemContext, &Register);
> - if (EFI_ERROR(Status)) {
> - Print ((CHAR16 *)L"No space left on device\n");
> - SendError (GDB_ENOSPACE);
> - return;
> - }
> -
> - // Write Address, length data at particular DR register
> - Status = EnableDebugRegister (SystemContext, Register, Address, Length, (UINTN)BreakType);
> - if (EFI_ERROR(Status)) {
> - if (Status == EFI_UNSUPPORTED) {
> - SendNotSupported();
> - return;
> - }
> -
> - SendError (GDB_EINVALIDARG);
> - return;
> - }
> -
> - SendSuccess ();
> -}
> -
> -
> -/**
> - ‘z1, [addr], [length]’
> - ‘z2, [addr], [length]’
> - ‘z3, [addr], [length]’
> - ‘z4, [addr], [length]’
> -
> - Remove hardware breakpoint/watchpoint at address addr of size length
> -
> - @param *PacketData Pointer to the Payload data for the packet
> -
> -**/
> -VOID
> -EFIAPI
> -RemoveBreakPoint (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - UINTN Type;
> - UINTN Address;
> - UINTN Length;
> - UINTN Register;
> - BREAK_TYPE BreakType = NotSupported;
> - EFI_STATUS Status;
> - UINTN ErrorCode;
> -
> - //Parse breakpoint packet data
> - ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
> - if (ErrorCode > 0) {
> - SendError ((UINT8)ErrorCode);
> - return;
> - }
> -
> - switch (Type) {
> -
> - case 0: //Software breakpoint
> - BreakType = SoftwareBreakpoint;
> - break;
> -
> - case 1: //Hardware breakpoint
> - BreakType = InstructionExecution;
> - break;
> -
> - case 2: //Write watchpoint
> - BreakType = DataWrite;
> - break;
> -
> - case 3: //Read watchpoint
> - BreakType = DataRead;
> - break;
> -
> - case 4: //Access watchpoint
> - BreakType = DataReadWrite;
> - break;
> -
> - default :
> - SendError (GDB_EINVALIDBRKPOINTTYPE);
> - return;
> - }
> -
> - //Find matching debug register
> - Status = FindMatchingDebugRegister (SystemContext, Address, Length, (UINTN)BreakType, &Register);
> - if (EFI_ERROR(Status)) {
> - if (Status == EFI_UNSUPPORTED) {
> - SendNotSupported();
> - return;
> - }
> -
> - SendError (GDB_ENOSPACE);
> - return;
> - }
> -
> - //Remove breakpoint
> - Status = DisableDebugRegister(SystemContext, Register);
> - if (EFI_ERROR(Status)) {
> - SendError (GDB_EINVALIDARG);
> - return;
> - }
> -
> - SendSuccess ();
> -}
> -
> -
> -/**
> - Initialize debug agent.
> -
> - This function is used to set up debug environment to support source level debugging.
> - If certain Debug Agent Library instance has to save some private data in the stack,
> - this function must work on the mode that doesn't return to the caller, then
> - the caller needs to wrap up all rest of logic after InitializeDebugAgent() into one
> - function and pass it into InitializeDebugAgent(). InitializeDebugAgent() is
> - responsible to invoke the passing-in function at the end of InitializeDebugAgent().
> -
> - If the parameter Function is not NULL, Debug Agent Library instance will invoke it by
> - passing in the Context to be its parameter.
> -
> - If Function() is NULL, Debug Agent Library instance will return after setup debug
> - environment.
> -
> - @param[in] InitFlag Init flag is used to decide the initialize process.
> - @param[in] Context Context needed according to InitFlag; it was optional.
> - @param[in] Function Continue function called by debug agent library; it was
> - optional.
> -
> -**/
> -VOID
> -EFIAPI
> -InitializeDebugAgent (
> - IN UINT32 InitFlag,
> - IN VOID *Context, OPTIONAL
> - IN DEBUG_AGENT_CONTINUE Function OPTIONAL
> - )
> -{
> - // BugBug: Add the code to build an GDT/IDT
> -
> - if (Function != NULL) {
> - Function (Context);
> - }
> -}
> -
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c b/EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c
> deleted file mode 100644
> index cbe50d78ec09..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c
> +++ /dev/null
> @@ -1,963 +0,0 @@
> -/** @file
> - Processor specific parts of the GDB stub
> -
> - Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> -
> - This program and the accompanying materials
> - are licensed and made available under the terms and conditions of the BSD License
> - which accompanies this distribution. The full text of the license may be found at
> - http://opensource.org/licenses/bsd-license.php
> -
> - THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> - WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -
> -**/
> -
> -#include <GdbStubInternal.h>
> -
> -//
> -// Array of exception types that need to be hooked by the debugger
> -//
> -EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
> - { EXCEPT_X64_DIVIDE_ERROR, GDB_SIGFPE },
> - { EXCEPT_X64_DEBUG, GDB_SIGTRAP },
> - { EXCEPT_X64_NMI, GDB_SIGEMT },
> - { EXCEPT_X64_BREAKPOINT, GDB_SIGTRAP },
> - { EXCEPT_X64_OVERFLOW, GDB_SIGSEGV },
> - { EXCEPT_X64_BOUND, GDB_SIGSEGV },
> - { EXCEPT_X64_INVALID_OPCODE, GDB_SIGILL },
> - { EXCEPT_X64_DOUBLE_FAULT, GDB_SIGEMT },
> - { EXCEPT_X64_STACK_FAULT, GDB_SIGSEGV },
> - { EXCEPT_X64_GP_FAULT, GDB_SIGSEGV },
> - { EXCEPT_X64_PAGE_FAULT, GDB_SIGSEGV },
> - { EXCEPT_X64_FP_ERROR, GDB_SIGEMT },
> - { EXCEPT_X64_ALIGNMENT_CHECK, GDB_SIGEMT },
> - { EXCEPT_X64_MACHINE_CHECK, GDB_SIGEMT }
> -};
> -
> -
> -// The offsets of registers SystemContextX64.
> -// The fields in the array are in the gdb ordering.
> -// HAVE TO DOUBLE-CHECK THE ORDER of the 24 regs
> -//
> -UINTN gRegisterOffsets[] = {
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rax),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rcx),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rdx),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rbx),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rsp),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rbp),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rsi),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rdi),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rip),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Rflags),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Cs),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Ss),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Ds),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Es),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Fs),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, Gs),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R8),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R9),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R10),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R11),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R12),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R13),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R14),
> - OFFSET_OF(EFI_SYSTEM_CONTEXT_X64, R15)
> -};
> -
> -
> -/**
> - Return the number of entries in the gExceptionType[]
> -
> - @retval UINTN, the number of entries in the gExceptionType[] array.
> - **/
> -UINTN
> -MaxEfiException (
> - VOID
> - )
> -{
> - return sizeof (gExceptionType)/sizeof (EFI_EXCEPTION_TYPE_ENTRY);
> -}
> -
> -
> -/**
> - Return the number of entries in the gRegisters[]
> -
> - @retval UINTN, the number of entries (registers) in the gRegisters[] array.
> - **/
> -UINTN
> -MaxRegisterCount (
> - VOID
> - )
> -{
> - return sizeof (gRegisterOffsets)/sizeof (UINTN);
> -}
> -
> -
> -/**
> - Check to see if the ISA is supported.
> - ISA = Instruction Set Architecture
> -
> - @retval TRUE if Isa is supported
> -**/
> -BOOLEAN
> -CheckIsa (
> - IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa
> - )
> -{
> - return (BOOLEAN)(Isa == IsaX64);
> -}
> -
> -
> -/**
> - This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
> - It is, by default, set to find the register pointer of the X64 member
> - @param SystemContext Register content at time of the exception
> - @param RegNumber The register to which we want to find a pointer
> - @retval the pointer to the RegNumber-th pointer
> - **/
> -UINTN *
> -FindPointerToRegister(
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber
> - )
> -{
> - UINT8 *TempPtr;
> - TempPtr = ((UINT8 *)SystemContext.SystemContextX64) + gRegisterOffsets[RegNumber];
> - return (UINTN *)TempPtr;
> -}
> -
> -
> -/**
> - Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
> - @param SystemContext Register content at time of the exception
> - @param RegNumber the number of the register that we want to read
> - @param OutBufPtr pointer to the output buffer's end. the new data will be added from this point on.
> - @retval the pointer to the next character of the output buffer that is available to be written on.
> - **/
> -CHAR8 *
> -BasicReadRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *OutBufPtr
> - )
> -{
> - UINTN RegSize;
> -
> - RegSize = 0;
> - while (RegSize < 64) {
> - *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
> - *OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> RegSize) & 0xf)];
> - RegSize = RegSize + 8;
> - }
> - return OutBufPtr;
> -}
> -
> -
> -/** ‘p n’
> - Reads the n-th register's value into an output buffer and sends it as a packet
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Pointer to the input buffer received from gdb server
> - **/
> -VOID
> -ReadNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN RegNumber;
> - CHAR8 OutBuffer[17]; // 1 reg=16 hex chars, and the end '\0' (escape seq)
> - CHAR8 *OutBufPtr; // pointer to the output buffer
> -
> - RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
> -
> - if ((RegNumber < 0) || (RegNumber >= MaxRegisterCount())) {
> - SendError (GDB_EINVALIDREGNUM);
> - return;
> - }
> -
> - OutBufPtr = OutBuffer;
> - OutBufPtr = BasicReadRegister(SystemContext, RegNumber, OutBufPtr);
> -
> - *OutBufPtr = '\0'; // the end of the buffer
> - SendPacket (OutBuffer);
> -}
> -
> -
> -/** ‘g’
> - Reads the general registers into an output buffer and sends it as a packet
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -ReadGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - UINTN i;
> - CHAR8 OutBuffer[385]; // 24 regs, 16 hex chars each, and the end '\0' (escape seq)
> - CHAR8 *OutBufPtr; // pointer to the output buffer
> -
> - OutBufPtr = OutBuffer;
> - for(i = 0 ; i < MaxRegisterCount() ; i++) { // there are only 24 registers to read
> - OutBufPtr = BasicReadRegister(SystemContext, i, OutBufPtr);
> - }
> -
> - *OutBufPtr = '\0'; // the end of the buffer
> - SendPacket (OutBuffer);
> -}
> -
> -
> -/**
> - Adds the RegNumber-th register's value to the output buffer, starting at the given OutBufPtr
> -
> - @param SystemContext Register content at time of the exception
> - @param RegNumber the number of the register that we want to write
> - @param InBufPtr pointer to the output buffer. the new data will be extracted from the input buffer from this point on.
> - @retval the pointer to the next character of the input buffer that can be used
> - **/
> -CHAR8 *
> -BasicWriteRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN RegNumber,
> - IN CHAR8 *InBufPtr
> - )
> -{
> - UINTN RegSize;
> - UINTN TempValue; // the value transferred from a hex char
> - UINT64 NewValue; // the new value of the RegNumber-th Register
> -
> - NewValue = 0;
> - RegSize = 0;
> - while (RegSize < 64) {
> - TempValue = HexCharToInt(*InBufPtr++);
> -
> - if (TempValue < 0) {
> - SendError (GDB_EBADMEMDATA);
> - return NULL;
> - }
> -
> - NewValue += (TempValue << (RegSize+4));
> - TempValue = HexCharToInt(*InBufPtr++);
> -
> - if (TempValue < 0) {
> - SendError (GDB_EBADMEMDATA);
> - return NULL;
> - }
> -
> - NewValue += (TempValue << RegSize);
> - RegSize = RegSize + 8;
> - }
> - *(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
> - return InBufPtr;
> -}
> -
> -
> -/** ‘P n...=r...’
> - Writes the new value of n-th register received into the input buffer to the n-th register
> -
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Ponter to the input buffer received from gdb server
> - **/
> -VOID
> -EFIAPI
> -WriteNthRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN RegNumber;
> - CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
> - CHAR8 *RegNumBufPtr;
> - CHAR8 *InBufPtr; // pointer to the input buffer
> -
> - // find the register number to write
> - InBufPtr = &InBuffer[1];
> - RegNumBufPtr = RegNumBuffer;
> - while (*InBufPtr != '=') {
> - *RegNumBufPtr++ = *InBufPtr++;
> - }
> - *RegNumBufPtr = '\0';
> - RegNumber = AsciiStrHexToUintn (RegNumBuffer);
> -
> - // check if this is a valid Register Number
> - if ((RegNumber < 0) || (RegNumber >= MaxRegisterCount())) {
> - SendError (GDB_EINVALIDREGNUM);
> - return;
> - }
> - InBufPtr++; // skips the '=' character
> - BasicWriteRegister (SystemContext, RegNumber, InBufPtr);
> - SendSuccess();
> -}
> -
> -
> -/** ‘G XX...’
> - Writes the new values received into the input buffer to the general registers
> -
> - @param SystemContext Register content at time of the exception
> - @param InBuffer Pointer to the input buffer received from gdb server
> - **/
> -VOID
> -EFIAPI
> -WriteGeneralRegisters (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *InBuffer
> - )
> -{
> - UINTN i;
> - CHAR8 *InBufPtr; /// pointer to the input buffer
> -
> - // check to see if the buffer is the right size which is
> - // 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 385
> - if (AsciiStrLen(InBuffer) != 385) { // 24 regs, 16 hex chars each, and the end '\0' (escape seq)
> - //Bad message. Message is not the right length
> - SendError (GDB_EBADBUFSIZE);
> - return;
> - }
> -
> - InBufPtr = &InBuffer[1];
> -
> - // Read the new values for the registers from the input buffer to an array, NewValueArray.
> - // The values in the array are in the gdb ordering
> - for(i=0; i < MaxRegisterCount(); i++) { // there are only 16 registers to write
> - InBufPtr = BasicWriteRegister(SystemContext, i, InBufPtr);
> - }
> -
> - SendSuccess();
> -}
> -
> -
> - /**
> - Insert Single Step in the SystemContext
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -AddSingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - SystemContext.SystemContextX64->Rflags |= TF_BIT; //Setting the TF bit.
> -}
> -
> -
> -
> -/**
> - Remove Single Step in the SystemContext
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -RemoveSingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - SystemContext.SystemContextX64->Rflags &= ~TF_BIT; // clearing the TF bit.
> -}
> -
> -
> -
> -/** ‘c [addr ]’
> - Continue. addr is Address to resume. If addr is omitted, resume at current
> - Address.
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -ContinueAtAddress (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - if (PacketData[1] != '\0') {
> - SystemContext.SystemContextX64->Rip = AsciiStrHexToUintn(&PacketData[1]);
> - }
> -}
> -
> -
> -/** ‘s [addr ]’
> - Single step. addr is the Address at which to resume. If addr is omitted, resume
> - at same Address.
> -
> - @param SystemContext Register content at time of the exception
> - **/
> -VOID
> -EFIAPI
> -SingleStep (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - if (PacketData[1] != '\0') {
> - SystemContext.SystemContextX64->Rip = AsciiStrHexToUintn (&PacketData[1]);
> - }
> -
> - AddSingleStep (SystemContext);
> -}
> -
> -
> -/**
> - Returns breakpoint data address from DR0-DR3 based on the input breakpoint
> - number
> -
> - @param SystemContext Register content at time of the exception
> - @param BreakpointNumber Breakpoint number
> -
> - @retval Address Data address from DR0-DR3 based on the
> - breakpoint number.
> -
> -**/
> -UINTN
> -GetBreakpointDataAddress (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN BreakpointNumber
> - )
> -{
> - UINTN Address;
> -
> - if (BreakpointNumber == 1) {
> - Address = SystemContext.SystemContextIa32->Dr0;
> - } else if (BreakpointNumber == 2) {
> - Address = SystemContext.SystemContextIa32->Dr1;
> - } else if (BreakpointNumber == 3) {
> - Address = SystemContext.SystemContextIa32->Dr2;
> - } else if (BreakpointNumber == 4) {
> - Address = SystemContext.SystemContextIa32->Dr3;
> - } else {
> - Address = 0;
> - }
> -
> - return Address;
> -}
> -
> -/**
> - Returns currently detected breakpoint value based on the register
> - DR6 B0-B3 field.
> - If no breakpoint is detected then it returns 0.
> -
> - @param SystemContext Register content at time of the exception
> -
> - @retval {1-4} Currently detected breakpoint value
> - @retval 0 No breakpoint detected.
> -
> -**/
> -UINTN
> -GetBreakpointDetected (
> - IN EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - IA32_DR6 Dr6;
> - UINTN BreakpointNumber;
> -
> - Dr6.UintN = SystemContext.SystemContextIa32->Dr6;
> -
> - if (Dr6.Bits.B0 == 1) {
> - BreakpointNumber = 1;
> - } else if (Dr6.Bits.B1 == 1) {
> - BreakpointNumber = 2;
> - } else if (Dr6.Bits.B2 == 1) {
> - BreakpointNumber = 3;
> - } else if (Dr6.Bits.B3 == 1) {
> - BreakpointNumber = 4;
> - } else {
> - BreakpointNumber = 0; //No breakpoint detected
> - }
> -
> - return BreakpointNumber;
> -}
> -
> -/**
> - Returns Breakpoint type (InstructionExecution, DataWrite, DataRead
> - or DataReadWrite) based on the Breakpoint number
> -
> - @param SystemContext Register content at time of the exception
> - @param BreakpointNumber Breakpoint number
> -
> - @retval BREAK_TYPE Breakpoint type value read from register DR7 RWn
> - field. For unknown value, it returns NotSupported.
> -
> -**/
> -BREAK_TYPE
> -GetBreakpointType (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN BreakpointNumber
> - )
> -{
> - IA32_DR7 Dr7;
> - BREAK_TYPE Type = NotSupported; //Default is NotSupported type
> -
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (BreakpointNumber == 1) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW0;
> - } else if (BreakpointNumber == 2) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW1;
> - } else if (BreakpointNumber == 3) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW2;
> - } else if (BreakpointNumber == 4) {
> - Type = (BREAK_TYPE) Dr7.Bits.RW3;
> - }
> -
> - return Type;
> -}
> -
> -
> -/**
> - Parses Length and returns the length which DR7 LENn field accepts.
> - For example: If we receive 1-Byte length then we should return 0.
> - Zero gets written to DR7 LENn field.
> -
> - @param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
> -
> - @retval Length Appropriate converted values which DR7 LENn field accepts.
> -
> -**/
> -UINTN
> -ConvertLengthData (
> - IN UINTN Length
> - )
> -{
> - if (Length == 1) { //1-Byte length
> - return 0;
> - } else if (Length == 2) { //2-Byte length
> - return 1;
> - } else if (Length == 4) { //4-Byte length
> - return 3;
> - } else { //Undefined or 8-byte length
> - return 2;
> - }
> -}
> -
> -
> -/**
> - Finds the next free debug register. If all the registers are occupied then
> - EFI_OUT_OF_RESOURCES is returned.
> -
> - @param SystemContext Register content at time of the exception
> - @param Register Register value (0 - 3 for the first free debug register)
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -FindNextFreeDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - OUT UINTN *Register
> - )
> -{
> - IA32_DR7 Dr7;
> -
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (Dr7.Bits.G0 == 0) {
> - *Register = 0;
> - } else if (Dr7.Bits.G1 == 0) {
> - *Register = 1;
> - } else if (Dr7.Bits.G2 == 0) {
> - *Register = 2;
> - } else if (Dr7.Bits.G3 == 0) {
> - *Register = 3;
> - } else {
> - return EFI_OUT_OF_RESOURCES;
> - }
> -
> - return EFI_SUCCESS;
> -}
> -
> -
> -/**
> - Enables the debug register. Writes Address value to appropriate DR0-3 register.
> - Sets LENn, Gn, RWn bits in DR7 register.
> -
> - @param SystemContext Register content at time of the exception
> - @param Register Register value (0 - 3)
> - @param Address Breakpoint address value
> - @param Type Breakpoint type (Instruction, Data write,
> - Data read or write etc.)
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -EnableDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Register,
> - IN UINTN Address,
> - IN UINTN Length,
> - IN UINTN Type
> - )
> -{
> - IA32_DR7 Dr7;
> -
> - //Convert length data
> - Length = ConvertLengthData (Length);
> -
> - //For Instruction execution, length should be 0
> - //(Ref. Intel reference manual 18.2.4)
> - if ((Type == 0) && (Length != 0)) {
> - return EFI_INVALID_PARAMETER;
> - }
> -
> - //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
> - //software breakpoint. We should send empty packet in both these cases.
> - if ((Type == (BREAK_TYPE)DataRead) ||
> - (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
> - return EFI_UNSUPPORTED;
> - }
> -
> - //Read DR7 so appropriate Gn, RWn and LENn bits can be modified.
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (Register == 0) {
> - SystemContext.SystemContextIa32->Dr0 = Address;
> - Dr7.Bits.G0 = 1;
> - Dr7.Bits.RW0 = Type;
> - Dr7.Bits.LEN0 = Length;
> - } else if (Register == 1) {
> - SystemContext.SystemContextIa32->Dr1 = Address;
> - Dr7.Bits.G1 = 1;
> - Dr7.Bits.RW1 = Type;
> - Dr7.Bits.LEN1 = Length;
> - } else if (Register == 2) {
> - SystemContext.SystemContextIa32->Dr2 = Address;
> - Dr7.Bits.G2 = 1;
> - Dr7.Bits.RW2 = Type;
> - Dr7.Bits.LEN2 = Length;
> - } else if (Register == 3) {
> - SystemContext.SystemContextIa32->Dr3 = Address;
> - Dr7.Bits.G3 = 1;
> - Dr7.Bits.RW3 = Type;
> - Dr7.Bits.LEN3 = Length;
> - } else {
> - return EFI_INVALID_PARAMETER;
> - }
> -
> - //Update Dr7 with appropriate Gn, RWn and LENn bits
> - SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
> -
> - return EFI_SUCCESS;
> -}
> -
> -
> -/**
> - Returns register number 0 - 3 for the maching debug register.
> - This function compares incoming Address, Type, Length and
> - if there is a match then it returns the appropriate register number.
> - In case of mismatch, function returns EFI_NOT_FOUND message.
> -
> - @param SystemContext Register content at time of the exception
> - @param Address Breakpoint address value
> - @param Length Breakpoint length value
> - @param Type Breakpoint type (Instruction, Data write, Data read
> - or write etc.)
> - @param Register Register value to be returned
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -FindMatchingDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Address,
> - IN UINTN Length,
> - IN UINTN Type,
> - OUT UINTN *Register
> - )
> -{
> - IA32_DR7 Dr7;
> -
> - //Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
> - //software breakpoint. We should send empty packet in both these cases.
> - if ((Type == (BREAK_TYPE)DataRead) ||
> - (Type == (BREAK_TYPE)SoftwareBreakpoint)) {
> - return EFI_UNSUPPORTED;
> - }
> -
> - //Convert length data
> - Length = ConvertLengthData(Length);
> -
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if ((Dr7.Bits.G0 == 1) &&
> - (Dr7.Bits.LEN0 == Length) &&
> - (Dr7.Bits.RW0 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr0)) {
> - *Register = 0;
> - } else if ((Dr7.Bits.G1 == 1) &&
> - (Dr7.Bits.LEN1 == Length) &&
> - (Dr7.Bits.RW1 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr1)) {
> - *Register = 1;
> - } else if ((Dr7.Bits.G2 == 1) &&
> - (Dr7.Bits.LEN2 == Length) &&
> - (Dr7.Bits.RW2 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr2)) {
> - *Register = 2;
> - } else if ((Dr7.Bits.G3 == 1) &&
> - (Dr7.Bits.LEN3 == Length) &&
> - (Dr7.Bits.RW3 == Type) &&
> - (Address == SystemContext.SystemContextIa32->Dr3)) {
> - *Register = 3;
> - } else {
> - Print ((CHAR16 *)L"No match found..\n");
> - return EFI_NOT_FOUND;
> - }
> -
> - return EFI_SUCCESS;
> -}
> -
> -
> -/**
> - Disables the particular debug register.
> -
> - @param SystemContext Register content at time of the exception
> - @param Register Register to be disabled
> -
> - @retval EFI_STATUS Appropriate status value.
> -
> -**/
> -EFI_STATUS
> -DisableDebugRegister (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN UINTN Register
> - )
> -{
> - IA32_DR7 Dr7;
> - UINTN Address = 0;
> -
> - //Read DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
> - Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
> -
> - if (Register == 0) {
> - SystemContext.SystemContextIa32->Dr0 = Address;
> - Dr7.Bits.G0 = 0;
> - Dr7.Bits.RW0 = 0;
> - Dr7.Bits.LEN0 = 0;
> - } else if (Register == 1) {
> - SystemContext.SystemContextIa32->Dr1 = Address;
> - Dr7.Bits.G1 = 0;
> - Dr7.Bits.RW1 = 0;
> - Dr7.Bits.LEN1 = 0;
> - } else if (Register == 2) {
> - SystemContext.SystemContextIa32->Dr2 = Address;
> - Dr7.Bits.G2 = 0;
> - Dr7.Bits.RW2 = 0;
> - Dr7.Bits.LEN2 = 0;
> - } else if (Register == 3) {
> - SystemContext.SystemContextIa32->Dr3 = Address;
> - Dr7.Bits.G3 = 0;
> - Dr7.Bits.RW3 = 0;
> - Dr7.Bits.LEN3 = 0;
> - } else {
> - return EFI_INVALID_PARAMETER;
> - }
> -
> - //Update DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
> - SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
> -
> - return EFI_SUCCESS;
> -}
> -
> -/**
> - ‘Z1, [addr], [length]’
> - ‘Z2, [addr], [length]’
> - ‘Z3, [addr], [length]’
> - ‘Z4, [addr], [length]’
> -
> - Insert hardware breakpoint/watchpoint at address addr of size length
> -
> - @param SystemContext Register content at time of the exception
> - @param *PacketData Pointer to the Payload data for the packet
> -
> -**/
> -VOID
> -EFIAPI
> -InsertBreakPoint (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - UINTN Type;
> - UINTN Address;
> - UINTN Length;
> - UINTN Register;
> - EFI_STATUS Status;
> - BREAK_TYPE BreakType = NotSupported;
> - UINTN ErrorCode;
> -
> - ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
> - if (ErrorCode > 0) {
> - SendError ((UINT8)ErrorCode);
> - return;
> - }
> -
> - switch (Type) {
> -
> - case 0: //Software breakpoint
> - BreakType = SoftwareBreakpoint;
> - break;
> -
> - case 1: //Hardware breakpoint
> - BreakType = InstructionExecution;
> - break;
> -
> - case 2: //Write watchpoint
> - BreakType = DataWrite;
> - break;
> -
> - case 3: //Read watchpoint
> - BreakType = DataRead;
> - break;
> -
> - case 4: //Access watchpoint
> - BreakType = DataReadWrite;
> - break;
> -
> - default :
> - Print ((CHAR16 *)L"Insert breakpoint default: %x\n", Type);
> - SendError (GDB_EINVALIDBRKPOINTTYPE);
> - return;
> - }
> -
> - // Find next free debug register
> - Status = FindNextFreeDebugRegister (SystemContext, &Register);
> - if (EFI_ERROR(Status)) {
> - Print ((CHAR16 *)L"No space left on device\n");
> - SendError (GDB_ENOSPACE);
> - return;
> - }
> -
> - // Write Address, length data at particular DR register
> - Status = EnableDebugRegister (SystemContext, Register, Address, Length, (UINTN)BreakType);
> - if (EFI_ERROR(Status)) {
> -
> - if (Status == EFI_UNSUPPORTED) {
> - Print ((CHAR16 *)L"Not supported\n");
> - SendNotSupported();
> - return;
> - }
> -
> - Print ((CHAR16 *)L"Invalid argument\n");
> - SendError (GDB_EINVALIDARG);
> - return;
> - }
> -
> - SendSuccess ();
> -}
> -
> -
> -/**
> - ‘z1, [addr], [length]’
> - ‘z2, [addr], [length]’
> - ‘z3, [addr], [length]’
> - ‘z4, [addr], [length]’
> -
> - Remove hardware breakpoint/watchpoint at address addr of size length
> -
> - @param *PacketData Pointer to the Payload data for the packet
> -
> -**/
> -VOID
> -EFIAPI
> -RemoveBreakPoint (
> - IN EFI_SYSTEM_CONTEXT SystemContext,
> - IN CHAR8 *PacketData
> - )
> -{
> - UINTN Type;
> - UINTN Address;
> - UINTN Length;
> - UINTN Register;
> - BREAK_TYPE BreakType = NotSupported;
> - EFI_STATUS Status;
> - UINTN ErrorCode;
> -
> - //Parse breakpoint packet data
> - ErrorCode = ParseBreakpointPacket (PacketData, &Type, &Address, &Length);
> - if (ErrorCode > 0) {
> - SendError ((UINT8)ErrorCode);
> - return;
> - }
> -
> - switch (Type) {
> -
> - case 0: //Software breakpoint
> - BreakType = SoftwareBreakpoint;
> - break;
> -
> - case 1: //Hardware breakpoint
> - BreakType = InstructionExecution;
> - break;
> -
> - case 2: //Write watchpoint
> - BreakType = DataWrite;
> - break;
> -
> - case 3: //Read watchpoint
> - BreakType = DataRead;
> - break;
> -
> - case 4: //Access watchpoint
> - BreakType = DataReadWrite;
> - break;
> -
> - default :
> - SendError (GDB_EINVALIDBRKPOINTTYPE);
> - return;
> - }
> -
> - //Find matching debug register
> - Status = FindMatchingDebugRegister (SystemContext, Address, Length, (UINTN)BreakType, &Register);
> - if (EFI_ERROR(Status)) {
> -
> - if (Status == EFI_UNSUPPORTED) {
> - Print ((CHAR16 *)L"Not supported.\n");
> - SendNotSupported();
> - return;
> - }
> -
> - Print ((CHAR16 *)L"No matching register found.\n");
> - SendError (GDB_ENOSPACE);
> - return;
> - }
> -
> - //Remove breakpoint
> - Status = DisableDebugRegister(SystemContext, Register);
> - if (EFI_ERROR(Status)) {
> - Print ((CHAR16 *)L"Invalid argument.\n");
> - SendError (GDB_EINVALIDARG);
> - return;
> - }
> -
> - SendSuccess ();
> -}
> -
> -
> -VOID
> -InitializeProcessor (
> - VOID
> - )
> -{
> -}
> -
> -BOOLEAN
> -ValidateAddress (
> - IN VOID *Address
> - )
> -{
> - return TRUE;
> -}
> -
> -BOOLEAN
> -ValidateException (
> - IN EFI_EXCEPTION_TYPE ExceptionType,
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext
> - )
> -{
> - return TRUE;
> -}
> -
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S b/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S
> deleted file mode 100644
> index df1543a6d242..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S
> +++ /dev/null
> @@ -1,258 +0,0 @@
> -#------------------------------------------------------------------------------
> -#
> -# Use ARMv6 instruction to operate on a single stack
> -#
> -# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
> -#
> -# This program and the accompanying materials
> -# are licensed and made available under the terms and conditions of the BSD License
> -# which accompanies this distribution. The full text of the license may be found at
> -# http://opensource.org/licenses/bsd-license.php
> -#
> -# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> -# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -#
> -#------------------------------------------------------------------------------
> -
> -/*
> -
> -This is the stack constructed by the exception handler (low address to high address)
> - # R0 - IFAR is EFI_SYSTEM_CONTEXT for ARM
> - Reg Offset
> - === ======
> - R0 0x00 # stmfd SP!,{R0-R12}
> - R1 0x04
> - R2 0x08
> - R3 0x0c
> - R4 0x10
> - R5 0x14
> - R6 0x18
> - R7 0x1c
> - R8 0x20
> - R9 0x24
> - R10 0x28
> - R11 0x2c
> - R12 0x30
> - SP 0x34 # reserved via adding 0x20 (32) to the SP
> - LR 0x38
> - PC 0x3c
> - CPSR 0x40
> - DFSR 0x44
> - DFAR 0x48
> - IFSR 0x4c
> - IFAR 0x50
> -
> - LR 0x54 # SVC Link register (we need to restore it)
> -
> - LR 0x58 # pushed by srsfd
> - CPSR 0x5c
> -
> - */
> -
> -
> -GCC_ASM_EXPORT(ExceptionHandlersStart)
> -GCC_ASM_EXPORT(ExceptionHandlersEnd)
> -GCC_ASM_EXPORT(CommonExceptionEntry)
> -GCC_ASM_EXPORT(AsmCommonExceptionEntry)
> -GCC_ASM_EXPORT(GdbExceptionHandler)
> -
> -.text
> -.align 3
> -
> -
> -//
> -// This code gets copied to the ARM vector table
> -// ExceptionHandlersStart - ExceptionHandlersEnd gets copied
> -//
> -ASM_PFX(ExceptionHandlersStart):
> -
> -ASM_PFX(Reset):
> - b ASM_PFX(Reset)
> -
> -ASM_PFX(UndefinedInstruction):
> - b ASM_PFX(UndefinedInstructionEntry)
> -
> -ASM_PFX(SoftwareInterrupt):
> - b ASM_PFX(SoftwareInterruptEntry)
> -
> -ASM_PFX(PrefetchAbort):
> - b ASM_PFX(PrefetchAbortEntry)
> -
> -ASM_PFX(DataAbort):
> - b ASM_PFX(DataAbortEntry)
> -
> -ASM_PFX(ReservedException):
> - b ASM_PFX(ReservedExceptionEntry)
> -
> -ASM_PFX(Irq):
> - b ASM_PFX(Irq)
> -
> -ASM_PFX(Fiq):
> - b ASM_PFX(FiqEntry)
> -
> -
> -ASM_PFX(UndefinedInstructionEntry):
> - sub LR, LR, #4 @ Only -2 for Thumb, adjust in CommonExceptionEntry
> - srsdb #0x13! @ Store return state on SVC stack
> - cpsid f,#0x13 @ Switch to SVC for common stack
> - stmfd SP!,{LR} @ Store the link register for the current mode
> - sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} @ Store the register state
> -
> - mov R0,#1 @ ExceptionType
> - ldr R1,ASM_PFX(CommonExceptionEntry)
> - bx R1
> -
> -ASM_PFX(SoftwareInterruptEntry):
> - sub LR, LR, #4 @ Only -2 for Thumb, adjust in CommonExceptionEntry
> - srsdb #0x13! @ Store return state on SVC stack
> - cpsid f @ We are already in SVC mode
> - stmfd SP!,{LR} @ Store the link register for the current mode
> - sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} @ Store the register state
> -
> - mov R0,#2 @ ExceptionType
> - ldr R1,ASM_PFX(CommonExceptionEntry)
> - bx R1
> -
> -ASM_PFX(PrefetchAbortEntry):
> - sub LR,LR,#4
> - srsdb #0x13! @ Store return state on SVC stack
> - cpsid f,#0x13 @ Switch to SVC for common stack
> - stmfd SP!,{LR} @ Store the link register for the current mode
> - sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} @ Store the register state
> -
> - mov R0,#3 @ ExceptionType
> - ldr R1,ASM_PFX(CommonExceptionEntry)
> - bx R1
> -
> -ASM_PFX(DataAbortEntry):
> - sub LR,LR,#8
> - srsdb #0x13! @ Store return state on SVC stack
> - cpsid f,#0x13 @ Switch to SVC for common stack
> - stmfd SP!,{LR} @ Store the link register for the current mode
> - sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} @ Store the register state
> -
> - mov R0,#4
> - ldr R1,ASM_PFX(CommonExceptionEntry)
> - bx R1
> -
> -ASM_PFX(ReservedExceptionEntry):
> - srsdb #0x13! @ Store return state on SVC stack
> - cpsid f,#0x13 @ Switch to SVC for common stack
> - stmfd SP!,{LR} @ Store the link register for the current mode
> - sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} @ Store the register state
> -
> - mov R0,#5
> - ldr R1,ASM_PFX(CommonExceptionEntry)
> - bx R1
> -
> -ASM_PFX(FiqEntry):
> - sub LR,LR,#4
> - srsdb #0x13! @ Store return state on SVC stack
> - cps #0x13 @ Switch to SVC for common stack
> - stmfd SP!,{LR} @ Store the link register for the current mode
> - sub SP,SP,#0x20 @ Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} @ Store the register state
> - @ Since we have already switch to SVC R8_fiq - R12_fiq
> - @ never get used or saved
> - mov R0,#7 @ ExceptionType
> - ldr R1,ASM_PFX(CommonExceptionEntry)
> - bx R1
> -
> -//
> -// This gets patched by the C code that patches in the vector table
> -//
> -ASM_PFX(CommonExceptionEntry):
> - .byte 0x12
> - .byte 0x34
> - .byte 0x56
> - .byte 0x78
> -
> -ASM_PFX(ExceptionHandlersEnd):
> -
> -//
> -// This code runs from CpuDxe driver loaded address. It is patched into
> -// CommonExceptionEntry.
> -//
> -ASM_PFX(AsmCommonExceptionEntry):
> - mrc p15, 0, R1, c6, c0, 2 @ Read IFAR
> - str R1, [SP, #0x50] @ Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
> -
> - mrc p15, 0, R1, c5, c0, 1 @ Read IFSR
> - str R1, [SP, #0x4c] @ Store it in EFI_SYSTEM_CONTEXT_ARM.IFSR
> -
> - mrc p15, 0, R1, c6, c0, 0 @ Read DFAR
> - str R1, [SP, #0x48] @ Store it in EFI_SYSTEM_CONTEXT_ARM.DFAR
> -
> - mrc p15, 0, R1, c5, c0, 0 @ Read DFSR
> - str R1, [SP, #0x44] @ Store it in EFI_SYSTEM_CONTEXT_ARM.DFSR
> -
> - ldr R1, [SP, #0x5c] @ srsdb saved pre-exception CPSR on the stack
> - str R1, [SP, #0x40] @ Store it in EFI_SYSTEM_CONTEXT_ARM.CPSR
> -
> - add R2, SP, #0x38 @ Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
> - and R3, R1, #0x1f @ Check CPSR to see if User or System Mode
> - cmp R3, #0x1f @ if ((CPSR == 0x10) || (CPSR == 0x1df))
> - cmpne R3, #0x10 @
> - stmeqed R2, {lr}^ @ save unbanked lr
> - @ else
> - stmneed R2, {lr} @ save SVC lr
> -
> -
> - ldr R5, [SP, #0x58] @ PC is the LR pushed by srsfd
> - @ Check to see if we have to adjust for Thumb entry
> - sub r4, r0, #1 @ if (ExceptionType == 1 || ExceptionType ==2)) {
> - cmp r4, #1 @ // UND & SVC have differnt LR adjust for Thumb
> - bhi NoAdjustNeeded
> -
> - tst r1, #0x20 @ if ((CPSR & T)) == T) { // Thumb Mode on entry
> - addne R5, R5, #2 @ PC += 2@
> - str R5,[SP,#0x58] @ Update LR value pused by srsfd
> -
> -NoAdjustNeeded:
> -
> - str R5, [SP, #0x3c] @ Store it in EFI_SYSTEM_CONTEXT_ARM.PC
> -
> - sub R1, SP, #0x60 @ We pused 0x60 bytes on the stack
> - str R1, [SP, #0x34] @ Store it in EFI_SYSTEM_CONTEXT_ARM.SP
> -
> - @ R0 is ExceptionType
> - mov R1,SP @ R1 is SystemContext
> -
> -/*
> -VOID
> -EFIAPI
> -GdbExceptionHandler (
> - IN EFI_EXCEPTION_TYPE ExceptionType, R0
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext R1
> - )
> -
> -*/
> - blx ASM_PFX(GdbExceptionHandler) @ Call exception handler
> -
> - ldr R1,[SP,#0x3c] @ EFI_SYSTEM_CONTEXT_ARM.PC
> - str R1,[SP,#0x58] @ Store it back to srsfd stack slot so it can be restored
> -
> - ldr R1,[SP,#0x40] @ EFI_SYSTEM_CONTEXT_ARM.CPSR
> - str R1,[SP,#0x5c] @ Store it back to srsfd stack slot so it can be restored
> -
> - add R3, SP, #0x54 @ Make R3 point to SVC LR saved on entry
> - add R2, SP, #0x38 @ Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
> - and R1, R1, #0x1f @ Check to see if User or System Mode
> - cmp R1, #0x1f @ if ((CPSR == 0x10) || (CPSR == 0x1f))
> - cmpne R1, #0x10 @
> - ldmeqed R2, {lr}^ @ restore unbanked lr
> - @ else
> - ldmneed R3, {lr} @ restore SVC lr, via ldmfd SP!, {LR}
> -
> - ldmfd SP!,{R0-R12} @ Restore general purpose registers
> - @ Exception handler can not change SP
> -
> - add SP,SP,#0x20 @ Clear out the remaining stack space
> - ldmfd SP!,{LR} @ restore the link register for this context
> - rfefd SP! @ return from exception via srsfd stack slot
> -
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm b/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm
> deleted file mode 100644
> index 611e83d7dae4..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm
> +++ /dev/null
> @@ -1,259 +0,0 @@
> -//------------------------------------------------------------------------------
> -//
> -// Use ARMv6 instruction to operate on a single stack
> -//
> -// Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
> -//
> -// This program and the accompanying materials
> -// are licensed and made available under the terms and conditions of the BSD License
> -// which accompanies this distribution. The full text of the license may be found at
> -// http://opensource.org/licenses/bsd-license.php
> -//
> -// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> -// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> -//
> -//------------------------------------------------------------------------------
> -
> -
> -
> -/*
> -
> -This is the stack constructed by the exception handler (low address to high address)
> - # R0 - IFAR is EFI_SYSTEM_CONTEXT for ARM
> - Reg Offset
> - === ======
> - R0 0x00 # stmfd SP!,{R0-R12}
> - R1 0x04
> - R2 0x08
> - R3 0x0c
> - R4 0x10
> - R5 0x14
> - R6 0x18
> - R7 0x1c
> - R8 0x20
> - R9 0x24
> - R10 0x28
> - R11 0x2c
> - R12 0x30
> - SP 0x34 # reserved via adding 0x20 (32) to the SP
> - LR 0x38
> - PC 0x3c
> - CPSR 0x40
> - DFSR 0x44
> - DFAR 0x48
> - IFSR 0x4c
> - IFAR 0x50
> -
> - LR 0x54 # SVC Link register (we need to restore it)
> -
> - LR 0x58 # pushed by srsfd
> - CPSR 0x5c
> -
> - */
> -
> -
> - EXPORT ExceptionHandlersStart
> - EXPORT ExceptionHandlersEnd
> - EXPORT CommonExceptionEntry
> - EXPORT AsmCommonExceptionEntry
> - IMPORT GdbExceptionHandler
> -
> - PRESERVE8
> - AREA DxeExceptionHandlers, CODE, READONLY
> -
> -//
> -// This code gets copied to the ARM vector table
> -// ExceptionHandlersStart - ExceptionHandlersEnd gets copied
> -//
> -ExceptionHandlersStart
> -
> -Reset
> - b Reset
> -
> -UndefinedInstruction
> - b UndefinedInstructionEntry
> -
> -SoftwareInterrupt
> - b SoftwareInterruptEntry
> -
> -PrefetchAbort
> - b PrefetchAbortEntry
> -
> -DataAbort
> - b DataAbortEntry
> -
> -ReservedException
> - b ReservedExceptionEntry
> -
> -Irq
> - b Irq
> -
> -Fiq
> - b FiqEntry
> -
> -
> -UndefinedInstructionEntry
> - sub LR, LR, #4 ; Only -2 for Thumb, adjust in CommonExceptionEntry
> - srsfd #0x13! ; Store return state on SVC stack
> - cpsid f, #0x13 ; Switch to SVC for common stack
> - stmfd SP!,{LR} ; Store the link register for the current mode
> - sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} ; Store the register state
> -
> - mov R0,#1 ; ExceptionType
> - ldr R1,CommonExceptionEntry;
> - bx R1
> -
> -SoftwareInterruptEntry
> - sub LR, LR, #4 ; Only -2 for Thumb, adjust in CommonExceptionEntry
> - srsfd #0x13! ; Store return state on SVC stack
> - cpsid f ; We are already in SVC mode
> - stmfd SP!,{LR} ; Store the link register for the current mode
> - sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} ; Store the register state
> -
> - mov R0,#2 ; ExceptionType
> - ldr R1,CommonExceptionEntry
> - bx R1
> -
> -PrefetchAbortEntry
> - sub LR,LR,#4
> - srsfd #0x13! ; Store return state on SVC stack
> - cpsid f, #0x13 ; Switch to SVC for common stack
> - stmfd SP!,{LR} ; Store the link register for the current mode
> - sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} ; Store the register state
> -
> - mov R0,#3 ; ExceptionType
> - ldr R1,CommonExceptionEntry
> - bx R1
> -
> -DataAbortEntry
> - sub LR,LR,#8
> - srsfd #0x13! ; Store return state on SVC stack
> - cpsid f, #0x13 ; Switch to SVC for common stack
> - stmfd SP!,{LR} ; Store the link register for the current mode
> - sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} ; Store the register state
> -
> - mov R0,#4 ; ExceptionType
> - ldr R1,CommonExceptionEntry
> - bx R1
> -
> -ReservedExceptionEntry
> - srsfd #0x13! ; Store return state on SVC stack
> - cpsid f, #0x13 ; Switch to SVC for common stack
> - stmfd SP!,{LR} ; Store the link register for the current mode
> - sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} ; Store the register state
> -
> - mov R0,#5 ; ExceptionType
> - ldr R1,CommonExceptionEntry
> - bx R1
> -
> -FiqEntry
> - sub LR,LR,#4
> - srsfd #0x13! ; Store return state on SVC stack
> - cps #0x13 ; Switch to SVC for common stack
> - stmfd SP!,{LR} ; Store the link register for the current mode
> - sub SP,SP,#0x20 ; Save space for SP, LR, PC, IFAR - CPSR
> - stmfd SP!,{R0-R12} ; Store the register state
> - ; Since we have already switch to SVC R8_fiq - R12_fiq
> - ; never get used or saved
> - mov R0,#7 ; ExceptionType
> - ldr R1,CommonExceptionEntry
> - bx R1
> -
> -//
> -// This gets patched by the C code that patches in the vector table
> -//
> -CommonExceptionEntry
> - dcd 0x12345678
> -
> -ExceptionHandlersEnd
> -
> -//
> -// This code runs from CpuDxe driver loaded address. It is patched into
> -// CommonExceptionEntry.
> -//
> -AsmCommonExceptionEntry
> - mrc p15, 0, R1, c6, c0, 2 ; Read IFAR
> - str R1, [SP, #0x50] ; Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
> -
> - mrc p15, 0, R1, c5, c0, 1 ; Read IFSR
> - str R1, [SP, #0x4c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.IFSR
> -
> - mrc p15, 0, R1, c6, c0, 0 ; Read DFAR
> - str R1, [SP, #0x48] ; Store it in EFI_SYSTEM_CONTEXT_ARM.DFAR
> -
> - mrc p15, 0, R1, c5, c0, 0 ; Read DFSR
> - str R1, [SP, #0x44] ; Store it in EFI_SYSTEM_CONTEXT_ARM.DFSR
> -
> - ldr R1, [SP, #0x5c] ; srsfd saved pre-exception CPSR on the stack
> - str R1, [SP, #0x40] ; Store it in EFI_SYSTEM_CONTEXT_ARM.CPSR
> -
> - add R2, SP, #0x38 ; Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
> - and R3, R1, #0x1f ; Check CPSR to see if User or System Mode
> - cmp R3, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1df))
> - cmpne R3, #0x10 ;
> - stmeqed R2, {lr}^ ; save unbanked lr
> - ; else
> - stmneed R2, {lr} ; save SVC lr
> -
> -
> - ldr R5, [SP, #0x58] ; PC is the LR pushed by srsfd
> - ; Check to see if we have to adjust for Thumb entry
> - sub r4, r0, #1 ; if (ExceptionType == 1 || ExceptionType ==2)) {
> - cmp r4, #1 ; // UND & SVC have differnt LR adjust for Thumb
> - bhi NoAdjustNeeded
> -
> - tst r1, #0x20 ; if ((CPSR & T)) == T) { // Thumb Mode on entry
> - addne R5, R5, #2 ; PC += 2;
> - str R5,[SP,#0x58] ; Update LR value pused by srsfd
> -
> -NoAdjustNeeded
> -
> - str R5, [SP, #0x3c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.PC
> -
> - sub R1, SP, #0x60 ; We pused 0x60 bytes on the stack
> - str R1, [SP, #0x34] ; Store it in EFI_SYSTEM_CONTEXT_ARM.SP
> -
> - ; R0 is ExceptionType
> - mov R1,SP ; R1 is SystemContext
> -
> -/*
> -VOID
> -EFIAPI
> -GdbExceptionHandler (
> - IN EFI_EXCEPTION_TYPE ExceptionType, R0
> - IN OUT EFI_SYSTEM_CONTEXT SystemContext R1
> - )
> -
> -*/
> - blx GdbExceptionHandler ; Call exception handler
> -
> - ldr R1,[SP,#0x3c] ; EFI_SYSTEM_CONTEXT_ARM.PC
> - str R1,[SP,#0x58] ; Store it back to srsfd stack slot so it can be restored
> -
> - ldr R1,[SP,#0x40] ; EFI_SYSTEM_CONTEXT_ARM.CPSR
> - str R1,[SP,#0x5c] ; Store it back to srsfd stack slot so it can be restored
> -
> - add R3, SP, #0x54 ; Make R3 point to SVC LR saved on entry
> - add R2, SP, #0x38 ; Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
> - and R1, R1, #0x1f ; Check to see if User or System Mode
> - cmp R1, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1f))
> - cmpne R1, #0x10 ;
> - ldmeqed R2, {lr}^ ; restore unbanked lr
> - ; else
> - ldmneed R3, {lr} ; restore SVC lr, via ldmfd SP!, {LR}
> -
> - ldmfd SP!,{R0-R12} ; Restore general purpose registers
> - ; Exception handler can not change SP
> -
> - add SP,SP,#0x20 ; Clear out the remaining stack space
> - ldmfd SP!,{LR} ; restore the link register for this context
> - rfefd SP! ; return from exception via srsfd stack slot
> -
> - END
> -
> -
> diff --git a/EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt b/EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt
> deleted file mode 100644
> index 287b09e6a8a7..000000000000
> --- a/EmbeddedPkg/Library/GdbDebugAgent/gdbnotes.txt
> +++ /dev/null
> @@ -1,15 +0,0 @@
> -arm-none-eabi-gcc -march=armv7-a -mthumb t.c -Wl,-nostdlib --emit-relocs
> -
> -target remote com7
> -set debug remote 1
> -set remotetimeout 30
> -set remotelogfile log.txt
> -add-symbol-file c:/work/edk2/Build/BeagleBoard/DEBUG_GCC48/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll 0x80008360
> -
> -
> -qSupported
> -Hg0
> -
> -Hc-1
> -qC
> -qAttached
> \ No newline at end of file
> --
> 2.19.2
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] EmbeddedPkg: remove GdbDebugAgent library
2018-12-12 15:02 ` Leif Lindholm
@ 2018-12-12 15:10 ` Ard Biesheuvel
2018-12-12 15:17 ` Leif Lindholm
0 siblings, 1 reply; 6+ messages in thread
From: Ard Biesheuvel @ 2018-12-12 15:10 UTC (permalink / raw)
To: Leif Lindholm; +Cc: edk2-devel@lists.01.org, Andrew Fish
On Wed, 12 Dec 2018 at 16:02, Leif Lindholm <leif.lindholm@linaro.org> wrote:
>
> On Wed, Dec 12, 2018 at 01:48:42PM +0100, Ard Biesheuvel wrote:
> > The GdbDebugAgent library is unused and unmaintained, and now it
> > turns out it doesn't build with Clang, so let's just get rid of it.
> >
> > Contributed-under: TianoCore Contribution Agreement 1.1
> > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
>
> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
> But that's really only for the ARM-specific bits.
>
> Andrew, did anyone end up using this library for Ia32/X64?
>
Considering the commit log from its introduction
"""
commit 969eba7b0df70c9aa261eaf005085568b88de87c
Author: andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Sat Apr 3 00:41:42 2010 +0000
Add the beginning of a GDB based Debug Agent. IA-32 and X64 don't have
low level interrupt code yet. I've been testing on ARM.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10334
6f19259b-4bc3-4df7-8a09-765794883524
"""
the lack of low level interrupt code in this patch, and the following
snippet from the .inf
"""
[Sources.X64]
Ia32/Processor.c
[Sources.Ia32]
X64/Processor.c
"""
I think it is safe to say that this code was never used on anything but ARM.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] EmbeddedPkg: remove GdbDebugAgent library
2018-12-12 15:10 ` Ard Biesheuvel
@ 2018-12-12 15:17 ` Leif Lindholm
2018-12-19 15:20 ` Leif Lindholm
0 siblings, 1 reply; 6+ messages in thread
From: Leif Lindholm @ 2018-12-12 15:17 UTC (permalink / raw)
To: Ard Biesheuvel; +Cc: edk2-devel@lists.01.org, Andrew Fish
On Wed, Dec 12, 2018 at 04:10:37PM +0100, Ard Biesheuvel wrote:
> On Wed, 12 Dec 2018 at 16:02, Leif Lindholm <leif.lindholm@linaro.org> wrote:
> >
> > On Wed, Dec 12, 2018 at 01:48:42PM +0100, Ard Biesheuvel wrote:
> > > The GdbDebugAgent library is unused and unmaintained, and now it
> > > turns out it doesn't build with Clang, so let's just get rid of it.
> > >
> > > Contributed-under: TianoCore Contribution Agreement 1.1
> > > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> >
> > Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
> > But that's really only for the ARM-specific bits.
> >
> > Andrew, did anyone end up using this library for Ia32/X64?
> >
>
> Considering the commit log from its introduction
>
> """
> commit 969eba7b0df70c9aa261eaf005085568b88de87c
> Author: andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>
> Date: Sat Apr 3 00:41:42 2010 +0000
>
> Add the beginning of a GDB based Debug Agent. IA-32 and X64 don't have
> low level interrupt code yet. I've been testing on ARM.
>
> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10334
> 6f19259b-4bc3-4df7-8a09-765794883524
> """
>
> the lack of low level interrupt code in this patch, and the following
> snippet from the .inf
>
> """
> [Sources.X64]
> Ia32/Processor.c
>
> [Sources.Ia32]
> X64/Processor.c
> """
>
> I think it is safe to say that this code was never used on anything but ARM.
I believe the same, but since we have the author of both the code and
that commit message easily accessible, I would like to verify before
we nuke it.
/
Leif
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] EmbeddedPkg: remove GdbDebugAgent library
2018-12-12 15:17 ` Leif Lindholm
@ 2018-12-19 15:20 ` Leif Lindholm
[not found] ` <CAKv+Gu9bC7uoxkjvB9yjuM6DUVAEGjUuUvasWyDOB17+KDXWNQ@mail.gmail.com>
0 siblings, 1 reply; 6+ messages in thread
From: Leif Lindholm @ 2018-12-19 15:20 UTC (permalink / raw)
To: Ard Biesheuvel; +Cc: edk2-devel@lists.01.org, Andrew Fish
On Wed, Dec 12, 2018 at 03:17:29PM +0000, Leif Lindholm wrote:
> > Considering the commit log from its introduction
> >
> > """
> > commit 969eba7b0df70c9aa261eaf005085568b88de87c
> > Author: andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>
> > Date: Sat Apr 3 00:41:42 2010 +0000
> >
> > Add the beginning of a GDB based Debug Agent. IA-32 and X64 don't have
> > low level interrupt code yet. I've been testing on ARM.
> >
> > git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10334
> > 6f19259b-4bc3-4df7-8a09-765794883524
> > """
> >
> > the lack of low level interrupt code in this patch, and the following
> > snippet from the .inf
> >
> > """
> > [Sources.X64]
> > Ia32/Processor.c
> >
> > [Sources.Ia32]
> > X64/Processor.c
> > """
> >
> > I think it is safe to say that this code was never used on anything but ARM.
>
> I believe the same, but since we have the author of both the code and
> that commit message easily accessible, I would like to verify before
> we nuke it.
Well, he didn't speak up for a week, and is probably riding
wilderbeest as I type this - so yeah, go ahead.
We can always revert :)
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
/
Leif
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] EmbeddedPkg: remove GdbDebugAgent library
[not found] ` <CAKv+Gu9bC7uoxkjvB9yjuM6DUVAEGjUuUvasWyDOB17+KDXWNQ@mail.gmail.com>
@ 2018-12-19 15:31 ` Ard Biesheuvel
0 siblings, 0 replies; 6+ messages in thread
From: Ard Biesheuvel @ 2018-12-19 15:31 UTC (permalink / raw)
To: Leif Lindholm, edk2-devel-01, Andrew Fish
On Wed, 19 Dec 2018 at 16:30, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>
> On Wed, 19 Dec 2018 at 16:20, Leif Lindholm <leif.lindholm@linaro.org> wrote:
> >
> > On Wed, Dec 12, 2018 at 03:17:29PM +0000, Leif Lindholm wrote:
> > > > Considering the commit log from its introduction
> > > >
> > > > """
> > > > commit 969eba7b0df70c9aa261eaf005085568b88de87c
> > > > Author: andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>
> > > > Date: Sat Apr 3 00:41:42 2010 +0000
> > > >
> > > > Add the beginning of a GDB based Debug Agent. IA-32 and X64 don't have
> > > > low level interrupt code yet. I've been testing on ARM.
> > > >
> > > > git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10334
> > > > 6f19259b-4bc3-4df7-8a09-765794883524
> > > > """
> > > >
> > > > the lack of low level interrupt code in this patch, and the following
> > > > snippet from the .inf
> > > >
> > > > """
> > > > [Sources.X64]
> > > > Ia32/Processor.c
> > > >
> > > > [Sources.Ia32]
> > > > X64/Processor.c
> > > > """
> > > >
> > > > I think it is safe to say that this code was never used on anything but ARM.
> > >
> > > I believe the same, but since we have the author of both the code and
> > > that commit message easily accessible, I would like to verify before
> > > we nuke it.
> >
> > Well, he didn't speak up for a week, and is probably riding
> > wilderbeest as I type this - so yeah, go ahead.
> >
> > We can always revert :)
> >
> > Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
> >
>
> Thanks
>
> Pushed as 5f0b035f107d..3bdc111178e1
Now with the list and Andrew in cc
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-12-19 15:31 UTC | newest]
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2018-12-12 12:48 [PATCH] EmbeddedPkg: remove GdbDebugAgent library Ard Biesheuvel
2018-12-12 15:02 ` Leif Lindholm
2018-12-12 15:10 ` Ard Biesheuvel
2018-12-12 15:17 ` Leif Lindholm
2018-12-19 15:20 ` Leif Lindholm
[not found] ` <CAKv+Gu9bC7uoxkjvB9yjuM6DUVAEGjUuUvasWyDOB17+KDXWNQ@mail.gmail.com>
2018-12-19 15:31 ` Ard Biesheuvel
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