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From: "Marvin Häuser" <mhaeuser@posteo.de>
To: devel@edk2.groups.io
Cc: Bob Feng <bob.c.feng@intel.com>,
	Liming Gao <gaoliming@byosoft.com.cn>,
	Yuwei Chen <yuwei.chen@intel.com>,
	Vitaly Cheptsov <vit9696@protonmail.com>
Subject: [PATCH] BaseTools/CommonLib: Fix unaligned API prototypes
Date: Sun,  8 Aug 2021 19:39:54 +0000	[thread overview]
Message-ID: <a533aec79f997e44595d5d863be29a63a1ac2199.1628449510.git.mhaeuser@posteo.de> (raw)
In-Reply-To: <b5220a578c737bcb167b93a7f9af55751770e540.1628449510.git.mhaeuser@posteo.de>

C prohibits not only dereferencing but also casting to unaligned
pointers. Thus, the current set of unaligned APIs cannot be called
safely. Update their prototypes to take VOID * pointers, which must
be able to represent any valid pointer.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Cc: Vitaly Cheptsov <vit9696@protonmail.com>
Signed-off-by: Marvin Häuser <mhaeuser@posteo.de>
---
 BaseTools/Source/C/Common/CommonLib.c | 16 ++++++++--------
 BaseTools/Source/C/Common/CommonLib.h |  8 ++++----
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/BaseTools/Source/C/Common/CommonLib.c b/BaseTools/Source/C/Common/CommonLib.c
index 7fb4ab764fcd..f1223fb2ae0a 100644
--- a/BaseTools/Source/C/Common/CommonLib.c
+++ b/BaseTools/Source/C/Common/CommonLib.c
@@ -1154,23 +1154,23 @@ StrSize (
 
 UINT64
 ReadUnaligned64 (
-   CONST UINT64              *Buffer
+   CONST VOID                *Buffer
   )
 {
   ASSERT (Buffer != NULL);
 
-  return *Buffer;
+  return *(CONST UINT64 *) Buffer;
 }
 
 UINT64
 WriteUnaligned64 (
-   UINT64                    *Buffer,
+   VOID                      *Buffer,
    UINT64                    Value
   )
 {
   ASSERT (Buffer != NULL);
 
-  return *Buffer = Value;
+  return *(UINT64 *) Buffer = Value;
 }
 
 
@@ -2018,23 +2018,23 @@ AllocatePool (
 
 UINT16
 WriteUnaligned16 (
-  UINT16                    *Buffer,
+  VOID                      *Buffer,
   UINT16                    Value
   )
 {
   ASSERT (Buffer != NULL);
 
-  return *Buffer = Value;
+  return *(UINT16 *) Buffer = Value;
 }
 
 UINT16
 ReadUnaligned16 (
-  CONST UINT16              *Buffer
+  CONST VOID                *Buffer
   )
 {
   ASSERT (Buffer != NULL);
 
-  return *Buffer;
+  return *(CONST UINT16 *) Buffer;
 }
 /**
   Return whether the integer string is a hex string.
diff --git a/BaseTools/Source/C/Common/CommonLib.h b/BaseTools/Source/C/Common/CommonLib.h
index 0f05d88db206..67c42a91765d 100644
--- a/BaseTools/Source/C/Common/CommonLib.h
+++ b/BaseTools/Source/C/Common/CommonLib.h
@@ -238,13 +238,13 @@ CopyGuid (
 
 UINT64
 WriteUnaligned64 (
-   UINT64                    *Buffer,
+   VOID                      *Buffer,
    UINT64                    Value
   );
 
 UINT64
 ReadUnaligned64 (
-   CONST UINT64              *Buffer
+   CONST VOID                *Buffer
   );
 
 UINTN
@@ -363,13 +363,13 @@ AllocatePool (
 
 UINT16
 WriteUnaligned16 (
-  UINT16                    *Buffer,
+  VOID                      *Buffer,
   UINT16                    Value
   );
 
 UINT16
 ReadUnaligned16 (
-  CONST UINT16              *Buffer
+  CONST VOID                *Buffer
   );
 
 VOID *
-- 
2.31.1


  reply	other threads:[~2021-08-08 19:40 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-08 19:39 [PATCH] ArmPkg/DefaultExceptionHandlerLib: Fix DebugImageInfoTable lookup Marvin Häuser
2021-08-08 19:39 ` [PATCH] BaseTools: Define the read-only data section name per toolchain Marvin Häuser
2021-08-08 19:39   ` [PATCH] UefiCpuPkg/BaseUefiCpuLib: Use toolchain-specific rodata section name Marvin Häuser
2021-08-08 19:39 ` [PATCH] BaseTools/tools_def: Fix CLANGPDB X64 RCPATH Marvin Häuser
2021-08-08 19:39 ` [PATCH] EmulatorPkg/Host/Unix: Drop dlopen() usage Marvin Häuser
2021-08-08 19:39 ` [PATCH] EmulatorPkg/Host/Unix: Remove unused declarations Marvin Häuser
2021-08-08 19:39 ` [PATCH] MdeModulePkg/CoreDxe: Drop caller-allocated image buffers Marvin Häuser
2021-08-08 19:39 ` [PATCH] MdeModulePkg/DxeCore: Consistent DebugImageInfoTable updates Marvin Häuser
2021-08-08 19:39   ` [PATCH] MdeModulePkg/DxeCore: Fix DebugImageInfoTable size report Marvin Häuser
2021-08-08 19:39   ` [PATCH] EmbeddedPkg/GdbStub: Check DebugImageInfoTable type safely Marvin Häuser
2021-08-08 19:39   ` [PATCH] ArmPkg/DefaultExceptionHandlerLib: " Marvin Häuser
2021-08-08 19:40   ` [PATCH] MdeModulePkg/CoreDxe: Mandatory LoadedImage for DebugImageInfoTable Marvin Häuser
2021-08-08 19:40   ` [PATCH] EmbeddedPkg/GdbStub: " Marvin Häuser
2021-08-08 19:40   ` [PATCH] ArmPkg/DefaultExceptionHandlerLib: " Marvin Häuser
2021-08-09  6:10   ` [PATCH] MdeModulePkg/DxeCore: Consistent DebugImageInfoTable updates Wu, Hao A
2021-08-09  6:15     ` Marvin Häuser
2021-08-09  6:52       ` [edk2-devel] " Wu, Hao A
2021-08-09  6:55         ` Wu, Hao A
2021-08-09  7:21         ` Marvin Häuser
2021-08-09  7:26           ` Wu, Hao A
2021-08-08 19:39 ` [PATCH] MdeModulePkg/DxeCore: Drop unnecessary pointer indirection Marvin Häuser
2021-08-08 19:39 ` [PATCH] MdeModulePkg/DxeCore: Use the correct source for fixed load address Marvin Häuser
2021-08-08 19:39 ` [PATCH] MdeModulePkg/PiSmmCore: Drop deprecated image profiling commands Marvin Häuser
2021-08-09  4:23   ` Ni, Ray
2021-08-09  5:33     ` Yao, Jiewen
2021-08-09  5:43       ` [edk2-devel] " Marvin Häuser
2021-08-08 19:39 ` [PATCH] MdeModulePkg/PiSmmIpl: Correct fixed load address bounds check Marvin Häuser
2021-08-08 19:39 ` [PATCH] MdePkg/Base.h: Introduce various alignment-related macros Marvin Häuser
2021-08-13  7:27   ` Wu, Hao A
2021-08-13  8:41     ` [edk2-devel] " Marvin Häuser
2021-08-13  8:45       ` Wu, Hao A
2021-08-08 19:39 ` [PATCH] MdePkg/BaseLib: Fix unaligned API prototypes Marvin Häuser
2021-08-08 19:39   ` Marvin Häuser [this message]
2021-08-08 19:39 ` [PATCH] SecurityPkg/DxeImageVerificationLib: Always lookup SHA-256 hash in dbx Marvin Häuser
2021-08-09  0:02   ` Min Xu
2021-08-09  5:25     ` [edk2-devel] " Marvin Häuser
2021-08-09  2:48   ` Yao, Jiewen
2021-08-09  5:42     ` [edk2-devel] " Marvin Häuser
2021-08-08 19:39 ` [PATCH] SecurityPkg/DxeImageVerificationLib: Fix certificate lookup algorithm Marvin Häuser
2021-08-08 19:39   ` [PATCH] SecurityPkg/SecureBootConfigDxe: " Marvin Häuser
2021-08-08 19:39 ` [PATCH] StandaloneMmPkg/FvLib: Correct FV section data size Marvin Häuser
2021-08-08 19:39 ` [PATCH] StandaloneMmPkg/StandaloneMmCore: Drop code for traditional drivers Marvin Häuser
2021-08-08 19:39 ` [PATCH] StandaloneMmPkg/StandaloneMmCore: Drop unused fixed address feature Marvin Häuser
2021-08-08 19:39 ` [PATCH] StandaloneMmPkg: Support CLANGPDB X64 builds Marvin Häuser
2021-10-11  1:04   ` [edk2-devel] " Steven Shi
2021-08-08 19:39 ` [PATCH] UefiPayloadPkg/UefiPayloadEntry: Fix memory corruption Marvin Häuser
2021-08-09  4:20   ` Ni, Ray
2021-08-09  5:47     ` Marvin Häuser
2021-08-10 19:13   ` Guo Dong

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