From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga07.intel.com (mga07.intel.com []) by mx.groups.io with SMTP id smtpd.web10.4325.1594267535170839581 for ; Wed, 08 Jul 2020 21:05:35 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=fail (domain: intel.com, ip: , mailfrom: michael.d.kinney@intel.com) IronPort-SDR: GvRJ4UtEAcCjYJEqiQ48CZexlZudI/gv6VVyHyo1db/IRMSCKfWkuwTOZqd5zN/zrOMWA1GgKO SHlaEzPr+lbA== X-IronPort-AV: E=McAfee;i="6000,8403,9676"; a="212851073" X-IronPort-AV: E=Sophos;i="5.75,330,1589266800"; d="scan'208";a="212851073" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jul 2020 21:05:35 -0700 IronPort-SDR: hPatGzn7MFGwJXQvY21uqmGDBvvMe2kV3hc3FtOyVI5a7oZWmz+3se6zesmovM8bP2/pw0gmtY 4Hei7LeC6FWg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,330,1589266800"; d="scan'208";a="280163919" Received: from mdkinney-mobl2.amr.corp.intel.com ([10.255.230.8]) by orsmga003.jf.intel.com with ESMTP; 08 Jul 2020 21:05:34 -0700 From: "Michael D Kinney" To: devel@edk2.groups.io Cc: Liming Gao , Sean Brogan , Bret Barkelew , Jiewen Yao Subject: [Patch v2 04/16] MdePkg/BaseLib: Break out IA32/X64 GCC inline privileged functions Date: Wed, 8 Jul 2020 21:05:09 -0700 Message-Id: <20200709040521.3748-5-michael.d.kinney@intel.com> X-Mailer: git-send-email 2.21.0.windows.1 In-Reply-To: <20200709040521.3748-1-michael.d.kinney@intel.com> References: <20200709040521.3748-1-michael.d.kinney@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2800 Break out the IA32/X64 GCC inline functions that can not be used in a unit test host application into their own source file. This does not make any changes to the BaseLib library instance. This is in preparation for a new BaseLib instances that is safe to use with host-based unit test applications. Cc: Liming Gao Cc: Sean Brogan Cc: Bret Barkelew Cc: Jiewen Yao Signed-off-by: Michael D Kinney --- MdePkg/Library/BaseLib/BaseLib.inf | 4 +- MdePkg/Library/BaseLib/Ia32/GccInline.c | 1181 +--------------- .../Ia32/{GccInline.c => GccInlinePriv.c} | 601 +------- MdePkg/Library/BaseLib/X64/GccInline.c | 1240 +---------------- .../X64/{GccInline.c => GccInlinePriv.c} | 572 +------- 5 files changed, 11 insertions(+), 3587 deletions(-) copy MdePkg/Library/BaseLib/Ia32/{GccInline.c => GccInlinePriv.c} (62%) copy MdePkg/Library/BaseLib/X64/{GccInline.c => GccInlinePriv.c} (65%) diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index a57ae2da31..c740a819ca 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -1,7 +1,7 @@ ## @file # Base Library implementation. # -# Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.
+# Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
# Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.
# Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.
@@ -156,6 +156,7 @@ [Sources.Ia32] Ia32/GccInline.c | GCC + Ia32/GccInlinePriv.c | GCC Ia32/Thunk16.nasm Ia32/EnableDisableInterrupts.nasm| GCC Ia32/EnablePaging64.nasm @@ -310,6 +311,7 @@ [Sources.X64] X86PatchInstruction.c X86SpeculationBarrier.c X64/GccInline.c | GCC + X64/GccInlinePriv.c | GCC X64/EnableDisableInterrupts.nasm X64/DisablePaging64.nasm X64/RdRand.nasm diff --git a/MdePkg/Library/BaseLib/Ia32/GccInline.c b/MdePkg/Library/BaseLib/Ia32/GccInline.c index 5287200f87..6ed938187a 100644 --- a/MdePkg/Library/BaseLib/Ia32/GccInline.c +++ b/MdePkg/Library/BaseLib/Ia32/GccInline.c @@ -1,7 +1,7 @@ /** @file GCC inline implementation of BaseLib processor specific functions. - Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent @@ -10,8 +10,6 @@ #include "BaseLibInternals.h" - - /** Used to serialize load and store operations. @@ -31,41 +29,6 @@ MemoryFence ( __asm__ __volatile__ ("":::"memory"); } - -/** - Enables CPU interrupts. - - Enables CPU interrupts. - -**/ -VOID -EFIAPI -EnableInterrupts ( - VOID - ) -{ - __asm__ __volatile__ ("sti"::: "memory"); -} - - -/** - Disables CPU interrupts. - - Disables CPU interrupts. - -**/ -VOID -EFIAPI -DisableInterrupts ( - VOID - ) -{ - __asm__ __volatile__ ("cli"::: "memory"); -} - - - - /** Requests CPU to pause for a short period of time. @@ -82,7 +45,6 @@ CpuPause ( __asm__ __volatile__ ("pause"); } - /** Generates a breakpoint on the CPU. @@ -99,75 +61,6 @@ CpuBreakpoint ( __asm__ __volatile__ ("int $3"); } - - -/** - Returns a 64-bit Machine Specific Register(MSR). - - Reads and returns the 64-bit MSR specified by Index. No parameter checking is - performed on Index, and some Index values may cause CPU exceptions. The - caller must either guarantee that Index is valid, or the caller must set up - exception handlers to catch the exceptions. This function is only available - on IA-32 and X64. - - @param Index The 32-bit MSR index to read. - - @return The value of the MSR identified by Index. - -**/ -UINT64 -EFIAPI -AsmReadMsr64 ( - IN UINT32 Index - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "rdmsr" - : "=A" (Data) // %0 - : "c" (Index) // %1 - ); - - return Data; -} - -/** - Writes a 64-bit value to a Machine Specific Register(MSR), and returns the - value. - - Writes the 64-bit value specified by Value to the MSR specified by Index. The - 64-bit value written to the MSR is returned. No parameter checking is - performed on Index or Value, and some of these may cause CPU exceptions. The - caller must either guarantee that Index and Value are valid, or the caller - must establish proper exception handlers. This function is only available on - IA-32 and X64. - - @param Index The 32-bit MSR index to write. - @param Value The 64-bit value to write to the MSR. - - @return Value - -**/ -UINT64 -EFIAPI -AsmWriteMsr64 ( - IN UINT32 Index, - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "wrmsr" - : - : "c" (Index), - "A" (Value) - ); - - return Value; -} - - - /** Reads the current value of the EFLAGS register. @@ -195,965 +88,6 @@ AsmReadEflags ( return Eflags; } - - -/** - Reads the current value of the Control Register 0 (CR0). - - Reads and returns the current value of CR0. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 0 (CR0). - -**/ -UINTN -EFIAPI -AsmReadCr0 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%cr0,%0" - : "=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of the Control Register 2 (CR2). - - Reads and returns the current value of CR2. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 2 (CR2). - -**/ -UINTN -EFIAPI -AsmReadCr2 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%cr2, %0" - : "=r" (Data) - ); - - return Data; -} - -/** - Reads the current value of the Control Register 3 (CR3). - - Reads and returns the current value of CR3. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 3 (CR3). - -**/ -UINTN -EFIAPI -AsmReadCr3 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%cr3, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of the Control Register 4 (CR4). - - Reads and returns the current value of CR4. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 4 (CR4). - -**/ -UINTN -EFIAPI -AsmReadCr4 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%cr4, %0" - : "=a" (Data) - ); - - return Data; -} - - -/** - Writes a value to Control Register 0 (CR0). - - Writes and returns a new value to CR0. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr0 The value to write to CR0. - - @return The value written to CR0. - -**/ -UINTN -EFIAPI -AsmWriteCr0 ( - UINTN Cr0 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%cr0" - : - : "r" (Cr0) - ); - return Cr0; -} - - -/** - Writes a value to Control Register 2 (CR2). - - Writes and returns a new value to CR2. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr2 The value to write to CR2. - - @return The value written to CR2. - -**/ -UINTN -EFIAPI -AsmWriteCr2 ( - UINTN Cr2 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%cr2" - : - : "r" (Cr2) - ); - return Cr2; -} - - -/** - Writes a value to Control Register 3 (CR3). - - Writes and returns a new value to CR3. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr3 The value to write to CR3. - - @return The value written to CR3. - -**/ -UINTN -EFIAPI -AsmWriteCr3 ( - UINTN Cr3 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%cr3" - : - : "r" (Cr3) - ); - return Cr3; -} - - -/** - Writes a value to Control Register 4 (CR4). - - Writes and returns a new value to CR4. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr4 The value to write to CR4. - - @return The value written to CR4. - -**/ -UINTN -EFIAPI -AsmWriteCr4 ( - UINTN Cr4 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%cr4" - : - : "r" (Cr4) - ); - return Cr4; -} - - -/** - Reads the current value of Debug Register 0 (DR0). - - Reads and returns the current value of DR0. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 0 (DR0). - -**/ -UINTN -EFIAPI -AsmReadDr0 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr0, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 1 (DR1). - - Reads and returns the current value of DR1. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 1 (DR1). - -**/ -UINTN -EFIAPI -AsmReadDr1 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr1, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 2 (DR2). - - Reads and returns the current value of DR2. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 2 (DR2). - -**/ -UINTN -EFIAPI -AsmReadDr2 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr2, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 3 (DR3). - - Reads and returns the current value of DR3. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 3 (DR3). - -**/ -UINTN -EFIAPI -AsmReadDr3 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr3, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 4 (DR4). - - Reads and returns the current value of DR4. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 4 (DR4). - -**/ -UINTN -EFIAPI -AsmReadDr4 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr4, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 5 (DR5). - - Reads and returns the current value of DR5. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 5 (DR5). - -**/ -UINTN -EFIAPI -AsmReadDr5 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr5, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 6 (DR6). - - Reads and returns the current value of DR6. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 6 (DR6). - -**/ -UINTN -EFIAPI -AsmReadDr6 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr6, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 7 (DR7). - - Reads and returns the current value of DR7. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 7 (DR7). - -**/ -UINTN -EFIAPI -AsmReadDr7 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "movl %%dr7, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Writes a value to Debug Register 0 (DR0). - - Writes and returns a new value to DR0. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr0 The value to write to Dr0. - - @return The value written to Debug Register 0 (DR0). - -**/ -UINTN -EFIAPI -AsmWriteDr0 ( - UINTN Dr0 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr0" - : - : "r" (Dr0) - ); - return Dr0; -} - - -/** - Writes a value to Debug Register 1 (DR1). - - Writes and returns a new value to DR1. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr1 The value to write to Dr1. - - @return The value written to Debug Register 1 (DR1). - -**/ -UINTN -EFIAPI -AsmWriteDr1 ( - UINTN Dr1 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr1" - : - : "r" (Dr1) - ); - return Dr1; -} - - -/** - Writes a value to Debug Register 2 (DR2). - - Writes and returns a new value to DR2. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr2 The value to write to Dr2. - - @return The value written to Debug Register 2 (DR2). - -**/ -UINTN -EFIAPI -AsmWriteDr2 ( - UINTN Dr2 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr2" - : - : "r" (Dr2) - ); - return Dr2; -} - - -/** - Writes a value to Debug Register 3 (DR3). - - Writes and returns a new value to DR3. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr3 The value to write to Dr3. - - @return The value written to Debug Register 3 (DR3). - -**/ -UINTN -EFIAPI -AsmWriteDr3 ( - UINTN Dr3 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr3" - : - : "r" (Dr3) - ); - return Dr3; -} - - -/** - Writes a value to Debug Register 4 (DR4). - - Writes and returns a new value to DR4. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr4 The value to write to Dr4. - - @return The value written to Debug Register 4 (DR4). - -**/ -UINTN -EFIAPI -AsmWriteDr4 ( - UINTN Dr4 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr4" - : - : "r" (Dr4) - ); - return Dr4; -} - - -/** - Writes a value to Debug Register 5 (DR5). - - Writes and returns a new value to DR5. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr5 The value to write to Dr5. - - @return The value written to Debug Register 5 (DR5). - -**/ -UINTN -EFIAPI -AsmWriteDr5 ( - UINTN Dr5 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr5" - : - : "r" (Dr5) - ); - return Dr5; -} - - -/** - Writes a value to Debug Register 6 (DR6). - - Writes and returns a new value to DR6. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr6 The value to write to Dr6. - - @return The value written to Debug Register 6 (DR6). - -**/ -UINTN -EFIAPI -AsmWriteDr6 ( - UINTN Dr6 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr6" - : - : "r" (Dr6) - ); - return Dr6; -} - - -/** - Writes a value to Debug Register 7 (DR7). - - Writes and returns a new value to DR7. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr7 The value to write to Dr7. - - @return The value written to Debug Register 7 (DR7). - -**/ -UINTN -EFIAPI -AsmWriteDr7 ( - UINTN Dr7 - ) -{ - __asm__ __volatile__ ( - "movl %0, %%dr7" - : - : "r" (Dr7) - ); - return Dr7; -} - - -/** - Reads the current value of Code Segment Register (CS). - - Reads and returns the current value of CS. This function is only available on - IA-32 and X64. - - @return The current value of CS. - -**/ -UINT16 -EFIAPI -AsmReadCs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%cs, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Data Segment Register (DS). - - Reads and returns the current value of DS. This function is only available on - IA-32 and X64. - - @return The current value of DS. - -**/ -UINT16 -EFIAPI -AsmReadDs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%ds, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Extra Segment Register (ES). - - Reads and returns the current value of ES. This function is only available on - IA-32 and X64. - - @return The current value of ES. - -**/ -UINT16 -EFIAPI -AsmReadEs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%es, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of FS Data Segment Register (FS). - - Reads and returns the current value of FS. This function is only available on - IA-32 and X64. - - @return The current value of FS. - -**/ -UINT16 -EFIAPI -AsmReadFs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%fs, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of GS Data Segment Register (GS). - - Reads and returns the current value of GS. This function is only available on - IA-32 and X64. - - @return The current value of GS. - -**/ -UINT16 -EFIAPI -AsmReadGs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%gs, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Stack Segment Register (SS). - - Reads and returns the current value of SS. This function is only available on - IA-32 and X64. - - @return The current value of SS. - -**/ -UINT16 -EFIAPI -AsmReadSs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%ds, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Task Register (TR). - - Reads and returns the current value of TR. This function is only available on - IA-32 and X64. - - @return The current value of TR. - -**/ -UINT16 -EFIAPI -AsmReadTr ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "str %0" - : "=a" (Data) - ); - - return Data; -} - - -/** - Reads the current Global Descriptor Table Register(GDTR) descriptor. - - Reads and returns the current GDTR descriptor and returns it in Gdtr. This - function is only available on IA-32 and X64. - - @param Gdtr The pointer to a GDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86ReadGdtr ( - OUT IA32_DESCRIPTOR *Gdtr - ) -{ - __asm__ __volatile__ ( - "sgdt %0" - : "=m" (*Gdtr) - ); -} - - -/** - Writes the current Global Descriptor Table Register (GDTR) descriptor. - - Writes and the current GDTR descriptor specified by Gdtr. This function is - only available on IA-32 and X64. - - @param Gdtr The pointer to a GDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86WriteGdtr ( - IN CONST IA32_DESCRIPTOR *Gdtr - ) -{ - __asm__ __volatile__ ( - "lgdt %0" - : - : "m" (*Gdtr) - ); - -} - - -/** - Reads the current Interrupt Descriptor Table Register(GDTR) descriptor. - - Reads and returns the current IDTR descriptor and returns it in Idtr. This - function is only available on IA-32 and X64. - - @param Idtr The pointer to a IDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86ReadIdtr ( - OUT IA32_DESCRIPTOR *Idtr - ) -{ - __asm__ __volatile__ ( - "sidt %0" - : "=m" (*Idtr) - ); -} - - -/** - Writes the current Interrupt Descriptor Table Register(GDTR) descriptor. - - Writes the current IDTR descriptor and returns it in Idtr. This function is - only available on IA-32 and X64. - - @param Idtr The pointer to a IDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86WriteIdtr ( - IN CONST IA32_DESCRIPTOR *Idtr - ) -{ - __asm__ __volatile__ ( - "lidt %0" - : - : "m" (*Idtr) - ); -} - - -/** - Reads the current Local Descriptor Table Register(LDTR) selector. - - Reads and returns the current 16-bit LDTR descriptor value. This function is - only available on IA-32 and X64. - - @return The current selector of LDT. - -**/ -UINT16 -EFIAPI -AsmReadLdtr ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "sldt %0" - : "=g" (Data) // %0 - ); - - return Data; -} - - -/** - Writes the current Local Descriptor Table Register (GDTR) selector. - - Writes and the current LDTR descriptor specified by Ldtr. This function is - only available on IA-32 and X64. - - @param Ldtr 16-bit LDTR selector value. - -**/ -VOID -EFIAPI -AsmWriteLdtr ( - IN UINT16 Ldtr - ) -{ - __asm__ __volatile__ ( - "lldtw %0" - : - : "g" (Ldtr) // %0 - ); -} - - /** Save the current floating point/SSE/SSE2 context to a buffer. @@ -1650,116 +584,3 @@ AsmReadTsc ( return Data; } - - -/** - Reads the current value of a Performance Counter (PMC). - - Reads and returns the current value of performance counter specified by - Index. This function is only available on IA-32 and X64. - - @param Index The 32-bit Performance Counter index to read. - - @return The value of the PMC specified by Index. - -**/ -UINT64 -EFIAPI -AsmReadPmc ( - IN UINT32 Index - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "rdpmc" - : "=A" (Data) - : "c" (Index) - ); - - return Data; -} - - - - -/** - Executes a WBINVD instruction. - - Executes a WBINVD instruction. This function is only available on IA-32 and - X64. - -**/ -VOID -EFIAPI -AsmWbinvd ( - VOID - ) -{ - __asm__ __volatile__ ("wbinvd":::"memory"); -} - - -/** - Executes a INVD instruction. - - Executes a INVD instruction. This function is only available on IA-32 and - X64. - -**/ -VOID -EFIAPI -AsmInvd ( - VOID - ) -{ - __asm__ __volatile__ ("invd":::"memory"); - -} - - -/** - Flushes a cache line from all the instruction and data caches within the - coherency domain of the CPU. - - Flushed the cache line specified by LinearAddress, and returns LinearAddress. - This function is only available on IA-32 and X64. - - @param LinearAddress The address of the cache line to flush. If the CPU is - in a physical addressing mode, then LinearAddress is a - physical address. If the CPU is in a virtual - addressing mode, then LinearAddress is a virtual - address. - - @return LinearAddress -**/ -VOID * -EFIAPI -AsmFlushCacheLine ( - IN VOID *LinearAddress - ) -{ - UINT32 RegEdx; - - // - // If the CPU does not support CLFLUSH instruction, - // then promote flush range to flush entire cache. - // - AsmCpuid (0x01, NULL, NULL, NULL, &RegEdx); - if ((RegEdx & BIT19) == 0) { - __asm__ __volatile__ ("wbinvd":::"memory"); - return LinearAddress; - } - - - __asm__ __volatile__ ( - "clflush (%0)" - : "+a" (LinearAddress) - : - : "memory" - ); - - return LinearAddress; -} - - diff --git a/MdePkg/Library/BaseLib/Ia32/GccInline.c b/MdePkg/Library/BaseLib/Ia32/GccInlinePriv.c similarity index 62% copy from MdePkg/Library/BaseLib/Ia32/GccInline.c copy to MdePkg/Library/BaseLib/Ia32/GccInlinePriv.c index 5287200f87..30aa63243b 100644 --- a/MdePkg/Library/BaseLib/Ia32/GccInline.c +++ b/MdePkg/Library/BaseLib/Ia32/GccInlinePriv.c @@ -1,7 +1,8 @@ /** @file - GCC inline implementation of BaseLib processor specific functions. + GCC inline implementation of BaseLib processor specific functions that use + privlidged instructions. - Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent @@ -10,28 +11,6 @@ #include "BaseLibInternals.h" - - -/** - Used to serialize load and store operations. - - All loads and stores that proceed calls to this function are guaranteed to be - globally visible when this function returns. - -**/ -VOID -EFIAPI -MemoryFence ( - VOID - ) -{ - // This is a little bit of overkill and it is more about the compiler that it is - // actually processor synchronization. This is like the _ReadWriteBarrier - // Microsoft specific intrinsic - __asm__ __volatile__ ("":::"memory"); -} - - /** Enables CPU interrupts. @@ -63,44 +42,6 @@ DisableInterrupts ( __asm__ __volatile__ ("cli"::: "memory"); } - - - -/** - Requests CPU to pause for a short period of time. - - Requests CPU to pause for a short period of time. Typically used in MP - systems to prevent memory starvation while waiting for a spin lock. - -**/ -VOID -EFIAPI -CpuPause ( - VOID - ) -{ - __asm__ __volatile__ ("pause"); -} - - -/** - Generates a breakpoint on the CPU. - - Generates a breakpoint on the CPU. The breakpoint must be implemented such - that code can resume normal execution after the breakpoint. - -**/ -VOID -EFIAPI -CpuBreakpoint ( - VOID - ) -{ - __asm__ __volatile__ ("int $3"); -} - - - /** Returns a 64-bit Machine Specific Register(MSR). @@ -166,37 +107,6 @@ AsmWriteMsr64 ( return Value; } - - -/** - Reads the current value of the EFLAGS register. - - Reads and returns the current value of the EFLAGS register. This function is - only available on IA-32 and X64. This returns a 32-bit value on IA-32 and a - 64-bit value on X64. - - @return EFLAGS on IA-32 or RFLAGS on X64. - -**/ -UINTN -EFIAPI -AsmReadEflags ( - VOID - ) -{ - UINTN Eflags; - - __asm__ __volatile__ ( - "pushfl \n\t" - "popl %0 " - : "=r" (Eflags) - ); - - return Eflags; -} - - - /** Reads the current value of the Control Register 0 (CR0). @@ -1153,505 +1063,6 @@ AsmWriteLdtr ( ); } - -/** - Save the current floating point/SSE/SSE2 context to a buffer. - - Saves the current floating point/SSE/SSE2 state to the buffer specified by - Buffer. Buffer must be aligned on a 16-byte boundary. This function is only - available on IA-32 and X64. - - @param Buffer The pointer to a buffer to save the floating point/SSE/SSE2 context. - -**/ -VOID -EFIAPI -InternalX86FxSave ( - OUT IA32_FX_BUFFER *Buffer - ) -{ - __asm__ __volatile__ ( - "fxsave %0" - : - : "m" (*Buffer) // %0 - ); -} - - -/** - Restores the current floating point/SSE/SSE2 context from a buffer. - - Restores the current floating point/SSE/SSE2 state from the buffer specified - by Buffer. Buffer must be aligned on a 16-byte boundary. This function is - only available on IA-32 and X64. - - @param Buffer The pointer to a buffer to save the floating point/SSE/SSE2 context. - -**/ -VOID -EFIAPI -InternalX86FxRestore ( - IN CONST IA32_FX_BUFFER *Buffer - ) -{ - __asm__ __volatile__ ( - "fxrstor %0" - : - : "m" (*Buffer) // %0 - ); -} - - -/** - Reads the current value of 64-bit MMX Register #0 (MM0). - - Reads and returns the current value of MM0. This function is only available - on IA-32 and X64. - - @return The current value of MM0. - -**/ -UINT64 -EFIAPI -AsmReadMm0 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm0, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #1 (MM1). - - Reads and returns the current value of MM1. This function is only available - on IA-32 and X64. - - @return The current value of MM1. - -**/ -UINT64 -EFIAPI -AsmReadMm1 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm1, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #2 (MM2). - - Reads and returns the current value of MM2. This function is only available - on IA-32 and X64. - - @return The current value of MM2. - -**/ -UINT64 -EFIAPI -AsmReadMm2 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm2, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #3 (MM3). - - Reads and returns the current value of MM3. This function is only available - on IA-32 and X64. - - @return The current value of MM3. - -**/ -UINT64 -EFIAPI -AsmReadMm3 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm3, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #4 (MM4). - - Reads and returns the current value of MM4. This function is only available - on IA-32 and X64. - - @return The current value of MM4. - -**/ -UINT64 -EFIAPI -AsmReadMm4 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm4, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #5 (MM5). - - Reads and returns the current value of MM5. This function is only available - on IA-32 and X64. - - @return The current value of MM5. - -**/ -UINT64 -EFIAPI -AsmReadMm5 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm5, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #6 (MM6). - - Reads and returns the current value of MM6. This function is only available - on IA-32 and X64. - - @return The current value of MM6. - -**/ -UINT64 -EFIAPI -AsmReadMm6 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm6, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #7 (MM7). - - Reads and returns the current value of MM7. This function is only available - on IA-32 and X64. - - @return The current value of MM7. - -**/ -UINT64 -EFIAPI -AsmReadMm7 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "push %%eax \n\t" - "push %%eax \n\t" - "movq %%mm7, (%%esp)\n\t" - "pop %%eax \n\t" - "pop %%edx \n\t" - : "=A" (Data) // %0 - ); - - return Data; -} - - -/** - Writes the current value of 64-bit MMX Register #0 (MM0). - - Writes the current value of MM0. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM0. - -**/ -VOID -EFIAPI -AsmWriteMm0 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm0" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #1 (MM1). - - Writes the current value of MM1. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM1. - -**/ -VOID -EFIAPI -AsmWriteMm1 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm1" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #2 (MM2). - - Writes the current value of MM2. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM2. - -**/ -VOID -EFIAPI -AsmWriteMm2 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm2" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #3 (MM3). - - Writes the current value of MM3. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM3. - -**/ -VOID -EFIAPI -AsmWriteMm3 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm3" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #4 (MM4). - - Writes the current value of MM4. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM4. - -**/ -VOID -EFIAPI -AsmWriteMm4 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm4" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #5 (MM5). - - Writes the current value of MM5. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM5. - -**/ -VOID -EFIAPI -AsmWriteMm5 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm5" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #6 (MM6). - - Writes the current value of MM6. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM6. - -**/ -VOID -EFIAPI -AsmWriteMm6 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm6" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #7 (MM7). - - Writes the current value of MM7. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM7. - -**/ -VOID -EFIAPI -AsmWriteMm7 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movq %0, %%mm7" // %0 - : - : "m" (Value) - ); -} - - -/** - Reads the current value of Time Stamp Counter (TSC). - - Reads and returns the current value of TSC. This function is only available - on IA-32 and X64. - - @return The current value of TSC - -**/ -UINT64 -EFIAPI -AsmReadTsc ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "rdtsc" - : "=A" (Data) - ); - - return Data; -} - - /** Reads the current value of a Performance Counter (PMC). @@ -1680,9 +1091,6 @@ AsmReadPmc ( return Data; } - - - /** Executes a WBINVD instruction. @@ -1699,7 +1107,6 @@ AsmWbinvd ( __asm__ __volatile__ ("wbinvd":::"memory"); } - /** Executes a INVD instruction. @@ -1761,5 +1168,3 @@ AsmFlushCacheLine ( return LinearAddress; } - - diff --git a/MdePkg/Library/BaseLib/X64/GccInline.c b/MdePkg/Library/BaseLib/X64/GccInline.c index 154ce1f57e..40a208f198 100644 --- a/MdePkg/Library/BaseLib/X64/GccInline.c +++ b/MdePkg/Library/BaseLib/X64/GccInline.c @@ -1,7 +1,7 @@ /** @file GCC inline implementation of BaseLib processor specific functions. - Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent @@ -33,40 +33,6 @@ MemoryFence ( } -/** - Enables CPU interrupts. - - Enables CPU interrupts. - -**/ -VOID -EFIAPI -EnableInterrupts ( - VOID - ) -{ - __asm__ __volatile__ ("sti"::: "memory"); -} - - -/** - Disables CPU interrupts. - - Disables CPU interrupts. - -**/ -VOID -EFIAPI -DisableInterrupts ( - VOID - ) -{ - __asm__ __volatile__ ("cli"::: "memory"); -} - - - - /** Requests CPU to pause for a short period of time. @@ -101,83 +67,6 @@ CpuBreakpoint ( } - -/** - Returns a 64-bit Machine Specific Register(MSR). - - Reads and returns the 64-bit MSR specified by Index. No parameter checking is - performed on Index, and some Index values may cause CPU exceptions. The - caller must either guarantee that Index is valid, or the caller must set up - exception handlers to catch the exceptions. This function is only available - on IA-32 and X64. - - @param Index The 32-bit MSR index to read. - - @return The value of the MSR identified by Index. - -**/ -UINT64 -EFIAPI -AsmReadMsr64 ( - IN UINT32 Index - ) -{ - UINT32 LowData; - UINT32 HighData; - - __asm__ __volatile__ ( - "rdmsr" - : "=a" (LowData), // %0 - "=d" (HighData) // %1 - : "c" (Index) // %2 - ); - - return (((UINT64)HighData) << 32) | LowData; -} - -/** - Writes a 64-bit value to a Machine Specific Register(MSR), and returns the - value. - - Writes the 64-bit value specified by Value to the MSR specified by Index. The - 64-bit value written to the MSR is returned. No parameter checking is - performed on Index or Value, and some of these may cause CPU exceptions. The - caller must either guarantee that Index and Value are valid, or the caller - must establish proper exception handlers. This function is only available on - IA-32 and X64. - - @param Index The 32-bit MSR index to write. - @param Value The 64-bit value to write to the MSR. - - @return Value - -**/ -UINT64 -EFIAPI -AsmWriteMsr64 ( - IN UINT32 Index, - IN UINT64 Value - ) -{ - UINT32 LowData; - UINT32 HighData; - - LowData = (UINT32)(Value); - HighData = (UINT32)(Value >> 32); - - __asm__ __volatile__ ( - "wrmsr" - : - : "c" (Index), - "a" (LowData), - "d" (HighData) - ); - - return Value; -} - - - /** Reads the current value of the EFLAGS register. @@ -205,965 +94,6 @@ AsmReadEflags ( return Eflags; } - - -/** - Reads the current value of the Control Register 0 (CR0). - - Reads and returns the current value of CR0. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 0 (CR0). - -**/ -UINTN -EFIAPI -AsmReadCr0 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%cr0,%0" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of the Control Register 2 (CR2). - - Reads and returns the current value of CR2. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 2 (CR2). - -**/ -UINTN -EFIAPI -AsmReadCr2 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%cr2, %0" - : "=r" (Data) // %0 - ); - - return Data; -} - -/** - Reads the current value of the Control Register 3 (CR3). - - Reads and returns the current value of CR3. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 3 (CR3). - -**/ -UINTN -EFIAPI -AsmReadCr3 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%cr3, %0" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of the Control Register 4 (CR4). - - Reads and returns the current value of CR4. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of the Control Register 4 (CR4). - -**/ -UINTN -EFIAPI -AsmReadCr4 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%cr4, %0" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Writes a value to Control Register 0 (CR0). - - Writes and returns a new value to CR0. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr0 The value to write to CR0. - - @return The value written to CR0. - -**/ -UINTN -EFIAPI -AsmWriteCr0 ( - UINTN Cr0 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%cr0" - : - : "r" (Cr0) - ); - return Cr0; -} - - -/** - Writes a value to Control Register 2 (CR2). - - Writes and returns a new value to CR2. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr2 The value to write to CR2. - - @return The value written to CR2. - -**/ -UINTN -EFIAPI -AsmWriteCr2 ( - UINTN Cr2 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%cr2" - : - : "r" (Cr2) - ); - return Cr2; -} - - -/** - Writes a value to Control Register 3 (CR3). - - Writes and returns a new value to CR3. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr3 The value to write to CR3. - - @return The value written to CR3. - -**/ -UINTN -EFIAPI -AsmWriteCr3 ( - UINTN Cr3 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%cr3" - : - : "r" (Cr3) - ); - return Cr3; -} - - -/** - Writes a value to Control Register 4 (CR4). - - Writes and returns a new value to CR4. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Cr4 The value to write to CR4. - - @return The value written to CR4. - -**/ -UINTN -EFIAPI -AsmWriteCr4 ( - UINTN Cr4 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%cr4" - : - : "r" (Cr4) - ); - return Cr4; -} - - -/** - Reads the current value of Debug Register 0 (DR0). - - Reads and returns the current value of DR0. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 0 (DR0). - -**/ -UINTN -EFIAPI -AsmReadDr0 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr0, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 1 (DR1). - - Reads and returns the current value of DR1. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 1 (DR1). - -**/ -UINTN -EFIAPI -AsmReadDr1 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr1, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 2 (DR2). - - Reads and returns the current value of DR2. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 2 (DR2). - -**/ -UINTN -EFIAPI -AsmReadDr2 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr2, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 3 (DR3). - - Reads and returns the current value of DR3. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 3 (DR3). - -**/ -UINTN -EFIAPI -AsmReadDr3 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr3, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 4 (DR4). - - Reads and returns the current value of DR4. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 4 (DR4). - -**/ -UINTN -EFIAPI -AsmReadDr4 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr4, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 5 (DR5). - - Reads and returns the current value of DR5. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 5 (DR5). - -**/ -UINTN -EFIAPI -AsmReadDr5 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr5, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 6 (DR6). - - Reads and returns the current value of DR6. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 6 (DR6). - -**/ -UINTN -EFIAPI -AsmReadDr6 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr6, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Debug Register 7 (DR7). - - Reads and returns the current value of DR7. This function is only available - on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on - X64. - - @return The value of Debug Register 7 (DR7). - -**/ -UINTN -EFIAPI -AsmReadDr7 ( - VOID - ) -{ - UINTN Data; - - __asm__ __volatile__ ( - "mov %%dr7, %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Writes a value to Debug Register 0 (DR0). - - Writes and returns a new value to DR0. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr0 The value to write to Dr0. - - @return The value written to Debug Register 0 (DR0). - -**/ -UINTN -EFIAPI -AsmWriteDr0 ( - UINTN Dr0 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr0" - : - : "r" (Dr0) - ); - return Dr0; -} - - -/** - Writes a value to Debug Register 1 (DR1). - - Writes and returns a new value to DR1. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr1 The value to write to Dr1. - - @return The value written to Debug Register 1 (DR1). - -**/ -UINTN -EFIAPI -AsmWriteDr1 ( - UINTN Dr1 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr1" - : - : "r" (Dr1) - ); - return Dr1; -} - - -/** - Writes a value to Debug Register 2 (DR2). - - Writes and returns a new value to DR2. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr2 The value to write to Dr2. - - @return The value written to Debug Register 2 (DR2). - -**/ -UINTN -EFIAPI -AsmWriteDr2 ( - UINTN Dr2 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr2" - : - : "r" (Dr2) - ); - return Dr2; -} - - -/** - Writes a value to Debug Register 3 (DR3). - - Writes and returns a new value to DR3. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr3 The value to write to Dr3. - - @return The value written to Debug Register 3 (DR3). - -**/ -UINTN -EFIAPI -AsmWriteDr3 ( - UINTN Dr3 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr3" - : - : "r" (Dr3) - ); - return Dr3; -} - - -/** - Writes a value to Debug Register 4 (DR4). - - Writes and returns a new value to DR4. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr4 The value to write to Dr4. - - @return The value written to Debug Register 4 (DR4). - -**/ -UINTN -EFIAPI -AsmWriteDr4 ( - UINTN Dr4 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr4" - : - : "r" (Dr4) - ); - return Dr4; -} - - -/** - Writes a value to Debug Register 5 (DR5). - - Writes and returns a new value to DR5. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr5 The value to write to Dr5. - - @return The value written to Debug Register 5 (DR5). - -**/ -UINTN -EFIAPI -AsmWriteDr5 ( - UINTN Dr5 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr5" - : - : "r" (Dr5) - ); - return Dr5; -} - - -/** - Writes a value to Debug Register 6 (DR6). - - Writes and returns a new value to DR6. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr6 The value to write to Dr6. - - @return The value written to Debug Register 6 (DR6). - -**/ -UINTN -EFIAPI -AsmWriteDr6 ( - UINTN Dr6 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr6" - : - : "r" (Dr6) - ); - return Dr6; -} - - -/** - Writes a value to Debug Register 7 (DR7). - - Writes and returns a new value to DR7. This function is only available on - IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64. - - @param Dr7 The value to write to Dr7. - - @return The value written to Debug Register 7 (DR7). - -**/ -UINTN -EFIAPI -AsmWriteDr7 ( - UINTN Dr7 - ) -{ - __asm__ __volatile__ ( - "mov %0, %%dr7" - : - : "r" (Dr7) - ); - return Dr7; -} - - -/** - Reads the current value of Code Segment Register (CS). - - Reads and returns the current value of CS. This function is only available on - IA-32 and X64. - - @return The current value of CS. - -**/ -UINT16 -EFIAPI -AsmReadCs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%cs, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Data Segment Register (DS). - - Reads and returns the current value of DS. This function is only available on - IA-32 and X64. - - @return The current value of DS. - -**/ -UINT16 -EFIAPI -AsmReadDs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%ds, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Extra Segment Register (ES). - - Reads and returns the current value of ES. This function is only available on - IA-32 and X64. - - @return The current value of ES. - -**/ -UINT16 -EFIAPI -AsmReadEs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%es, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of FS Data Segment Register (FS). - - Reads and returns the current value of FS. This function is only available on - IA-32 and X64. - - @return The current value of FS. - -**/ -UINT16 -EFIAPI -AsmReadFs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%fs, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of GS Data Segment Register (GS). - - Reads and returns the current value of GS. This function is only available on - IA-32 and X64. - - @return The current value of GS. - -**/ -UINT16 -EFIAPI -AsmReadGs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%gs, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Stack Segment Register (SS). - - Reads and returns the current value of SS. This function is only available on - IA-32 and X64. - - @return The current value of SS. - -**/ -UINT16 -EFIAPI -AsmReadSs ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "mov %%ds, %0" - :"=a" (Data) - ); - - return Data; -} - - -/** - Reads the current value of Task Register (TR). - - Reads and returns the current value of TR. This function is only available on - IA-32 and X64. - - @return The current value of TR. - -**/ -UINT16 -EFIAPI -AsmReadTr ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "str %0" - : "=r" (Data) - ); - - return Data; -} - - -/** - Reads the current Global Descriptor Table Register(GDTR) descriptor. - - Reads and returns the current GDTR descriptor and returns it in Gdtr. This - function is only available on IA-32 and X64. - - @param Gdtr The pointer to a GDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86ReadGdtr ( - OUT IA32_DESCRIPTOR *Gdtr - ) -{ - __asm__ __volatile__ ( - "sgdt %0" - : "=m" (*Gdtr) - ); -} - - -/** - Writes the current Global Descriptor Table Register (GDTR) descriptor. - - Writes and the current GDTR descriptor specified by Gdtr. This function is - only available on IA-32 and X64. - - @param Gdtr The pointer to a GDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86WriteGdtr ( - IN CONST IA32_DESCRIPTOR *Gdtr - ) -{ - __asm__ __volatile__ ( - "lgdt %0" - : - : "m" (*Gdtr) - ); - -} - - -/** - Reads the current Interrupt Descriptor Table Register(GDTR) descriptor. - - Reads and returns the current IDTR descriptor and returns it in Idtr. This - function is only available on IA-32 and X64. - - @param Idtr The pointer to a IDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86ReadIdtr ( - OUT IA32_DESCRIPTOR *Idtr - ) -{ - __asm__ __volatile__ ( - "sidt %0" - : "=m" (*Idtr) - ); -} - - -/** - Writes the current Interrupt Descriptor Table Register(GDTR) descriptor. - - Writes the current IDTR descriptor and returns it in Idtr. This function is - only available on IA-32 and X64. - - @param Idtr The pointer to a IDTR descriptor. - -**/ -VOID -EFIAPI -InternalX86WriteIdtr ( - IN CONST IA32_DESCRIPTOR *Idtr - ) -{ - __asm__ __volatile__ ( - "lidt %0" - : - : "m" (*Idtr) - ); -} - - -/** - Reads the current Local Descriptor Table Register(LDTR) selector. - - Reads and returns the current 16-bit LDTR descriptor value. This function is - only available on IA-32 and X64. - - @return The current selector of LDT. - -**/ -UINT16 -EFIAPI -AsmReadLdtr ( - VOID - ) -{ - UINT16 Data; - - __asm__ __volatile__ ( - "sldt %0" - : "=g" (Data) // %0 - ); - - return Data; -} - - -/** - Writes the current Local Descriptor Table Register (GDTR) selector. - - Writes and the current LDTR descriptor specified by Ldtr. This function is - only available on IA-32 and X64. - - @param Ldtr 16-bit LDTR selector value. - -**/ -VOID -EFIAPI -AsmWriteLdtr ( - IN UINT16 Ldtr - ) -{ - __asm__ __volatile__ ( - "lldtw %0" - : - : "g" (Ldtr) // %0 - ); -} - - /** Save the current floating point/SSE/SSE2 context to a buffer. @@ -1630,171 +560,3 @@ AsmReadTsc ( return (((UINT64)HiData) << 32) | LowData; } - - -/** - Reads the current value of a Performance Counter (PMC). - - Reads and returns the current value of performance counter specified by - Index. This function is only available on IA-32 and X64. - - @param Index The 32-bit Performance Counter index to read. - - @return The value of the PMC specified by Index. - -**/ -UINT64 -EFIAPI -AsmReadPmc ( - IN UINT32 Index - ) -{ - UINT32 LowData; - UINT32 HiData; - - __asm__ __volatile__ ( - "rdpmc" - : "=a" (LowData), - "=d" (HiData) - : "c" (Index) - ); - - return (((UINT64)HiData) << 32) | LowData; -} - - -/** - Sets up a monitor buffer that is used by AsmMwait(). - - Executes a MONITOR instruction with the register state specified by Eax, Ecx - and Edx. Returns Eax. This function is only available on IA-32 and X64. - - @param Eax The value to load into EAX or RAX before executing the MONITOR - instruction. - @param Ecx The value to load into ECX or RCX before executing the MONITOR - instruction. - @param Edx The value to load into EDX or RDX before executing the MONITOR - instruction. - - @return Eax - -**/ -UINTN -EFIAPI -AsmMonitor ( - IN UINTN Eax, - IN UINTN Ecx, - IN UINTN Edx - ) -{ - __asm__ __volatile__ ( - "monitor" - : - : "a" (Eax), - "c" (Ecx), - "d" (Edx) - ); - - return Eax; -} - - -/** - Executes an MWAIT instruction. - - Executes an MWAIT instruction with the register state specified by Eax and - Ecx. Returns Eax. This function is only available on IA-32 and X64. - - @param Eax The value to load into EAX or RAX before executing the MONITOR - instruction. - @param Ecx The value to load into ECX or RCX before executing the MONITOR - instruction. - - @return Eax - -**/ -UINTN -EFIAPI -AsmMwait ( - IN UINTN Eax, - IN UINTN Ecx - ) -{ - __asm__ __volatile__ ( - "mwait" - : - : "a" (Eax), - "c" (Ecx) - ); - - return Eax; -} - - -/** - Executes a WBINVD instruction. - - Executes a WBINVD instruction. This function is only available on IA-32 and - X64. - -**/ -VOID -EFIAPI -AsmWbinvd ( - VOID - ) -{ - __asm__ __volatile__ ("wbinvd":::"memory"); -} - - -/** - Executes a INVD instruction. - - Executes a INVD instruction. This function is only available on IA-32 and - X64. - -**/ -VOID -EFIAPI -AsmInvd ( - VOID - ) -{ - __asm__ __volatile__ ("invd":::"memory"); - -} - - -/** - Flushes a cache line from all the instruction and data caches within the - coherency domain of the CPU. - - Flushed the cache line specified by LinearAddress, and returns LinearAddress. - This function is only available on IA-32 and X64. - - @param LinearAddress The address of the cache line to flush. If the CPU is - in a physical addressing mode, then LinearAddress is a - physical address. If the CPU is in a virtual - addressing mode, then LinearAddress is a virtual - address. - - @return LinearAddress -**/ -VOID * -EFIAPI -AsmFlushCacheLine ( - IN VOID *LinearAddress - ) -{ - __asm__ __volatile__ ( - "clflush (%0)" - : - : "r" (LinearAddress) - : "memory" - ); - - return LinearAddress; -} - - diff --git a/MdePkg/Library/BaseLib/X64/GccInline.c b/MdePkg/Library/BaseLib/X64/GccInlinePriv.c similarity index 65% copy from MdePkg/Library/BaseLib/X64/GccInline.c copy to MdePkg/Library/BaseLib/X64/GccInlinePriv.c index 154ce1f57e..98be19b3c7 100644 --- a/MdePkg/Library/BaseLib/X64/GccInline.c +++ b/MdePkg/Library/BaseLib/X64/GccInlinePriv.c @@ -1,7 +1,8 @@ /** @file - GCC inline implementation of BaseLib processor specific functions. + GCC inline implementation of BaseLib processor specific functions that use + privlidged instructions. - Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent @@ -10,29 +11,6 @@ #include "BaseLibInternals.h" - - - -/** - Used to serialize load and store operations. - - All loads and stores that proceed calls to this function are guaranteed to be - globally visible when this function returns. - -**/ -VOID -EFIAPI -MemoryFence ( - VOID - ) -{ - // This is a little bit of overkill and it is more about the compiler that it is - // actually processor synchronization. This is like the _ReadWriteBarrier - // Microsoft specific intrinsic - __asm__ __volatile__ ("":::"memory"); -} - - /** Enables CPU interrupts. @@ -64,44 +42,6 @@ DisableInterrupts ( __asm__ __volatile__ ("cli"::: "memory"); } - - - -/** - Requests CPU to pause for a short period of time. - - Requests CPU to pause for a short period of time. Typically used in MP - systems to prevent memory starvation while waiting for a spin lock. - -**/ -VOID -EFIAPI -CpuPause ( - VOID - ) -{ - __asm__ __volatile__ ("pause"); -} - - -/** - Generates a breakpoint on the CPU. - - Generates a breakpoint on the CPU. The breakpoint must be implemented such - that code can resume normal execution after the breakpoint. - -**/ -VOID -EFIAPI -CpuBreakpoint ( - VOID - ) -{ - __asm__ __volatile__ ("int $3"); -} - - - /** Returns a 64-bit Machine Specific Register(MSR). @@ -176,37 +116,6 @@ AsmWriteMsr64 ( return Value; } - - -/** - Reads the current value of the EFLAGS register. - - Reads and returns the current value of the EFLAGS register. This function is - only available on IA-32 and X64. This returns a 32-bit value on IA-32 and a - 64-bit value on X64. - - @return EFLAGS on IA-32 or RFLAGS on X64. - -**/ -UINTN -EFIAPI -AsmReadEflags ( - VOID - ) -{ - UINTN Eflags; - - __asm__ __volatile__ ( - "pushfq \n\t" - "pop %0 " - : "=r" (Eflags) // %0 - ); - - return Eflags; -} - - - /** Reads the current value of the Control Register 0 (CR0). @@ -1163,475 +1072,6 @@ AsmWriteLdtr ( ); } - -/** - Save the current floating point/SSE/SSE2 context to a buffer. - - Saves the current floating point/SSE/SSE2 state to the buffer specified by - Buffer. Buffer must be aligned on a 16-byte boundary. This function is only - available on IA-32 and X64. - - @param Buffer The pointer to a buffer to save the floating point/SSE/SSE2 context. - -**/ -VOID -EFIAPI -InternalX86FxSave ( - OUT IA32_FX_BUFFER *Buffer - ) -{ - __asm__ __volatile__ ( - "fxsave %0" - : - : "m" (*Buffer) // %0 - ); -} - - -/** - Restores the current floating point/SSE/SSE2 context from a buffer. - - Restores the current floating point/SSE/SSE2 state from the buffer specified - by Buffer. Buffer must be aligned on a 16-byte boundary. This function is - only available on IA-32 and X64. - - @param Buffer The pointer to a buffer to save the floating point/SSE/SSE2 context. - -**/ -VOID -EFIAPI -InternalX86FxRestore ( - IN CONST IA32_FX_BUFFER *Buffer - ) -{ - __asm__ __volatile__ ( - "fxrstor %0" - : - : "m" (*Buffer) // %0 - ); -} - - -/** - Reads the current value of 64-bit MMX Register #0 (MM0). - - Reads and returns the current value of MM0. This function is only available - on IA-32 and X64. - - @return The current value of MM0. - -**/ -UINT64 -EFIAPI -AsmReadMm0 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm0, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #1 (MM1). - - Reads and returns the current value of MM1. This function is only available - on IA-32 and X64. - - @return The current value of MM1. - -**/ -UINT64 -EFIAPI -AsmReadMm1 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm1, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #2 (MM2). - - Reads and returns the current value of MM2. This function is only available - on IA-32 and X64. - - @return The current value of MM2. - -**/ -UINT64 -EFIAPI -AsmReadMm2 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm2, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #3 (MM3). - - Reads and returns the current value of MM3. This function is only available - on IA-32 and X64. - - @return The current value of MM3. - -**/ -UINT64 -EFIAPI -AsmReadMm3 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm3, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #4 (MM4). - - Reads and returns the current value of MM4. This function is only available - on IA-32 and X64. - - @return The current value of MM4. - -**/ -UINT64 -EFIAPI -AsmReadMm4 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm4, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #5 (MM5). - - Reads and returns the current value of MM5. This function is only available - on IA-32 and X64. - - @return The current value of MM5. - -**/ -UINT64 -EFIAPI -AsmReadMm5 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm5, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #6 (MM6). - - Reads and returns the current value of MM6. This function is only available - on IA-32 and X64. - - @return The current value of MM6. - -**/ -UINT64 -EFIAPI -AsmReadMm6 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm6, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Reads the current value of 64-bit MMX Register #7 (MM7). - - Reads and returns the current value of MM7. This function is only available - on IA-32 and X64. - - @return The current value of MM7. - -**/ -UINT64 -EFIAPI -AsmReadMm7 ( - VOID - ) -{ - UINT64 Data; - - __asm__ __volatile__ ( - "movd %%mm7, %0 \n\t" - : "=r" (Data) // %0 - ); - - return Data; -} - - -/** - Writes the current value of 64-bit MMX Register #0 (MM0). - - Writes the current value of MM0. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM0. - -**/ -VOID -EFIAPI -AsmWriteMm0 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm0" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #1 (MM1). - - Writes the current value of MM1. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM1. - -**/ -VOID -EFIAPI -AsmWriteMm1 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm1" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #2 (MM2). - - Writes the current value of MM2. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM2. - -**/ -VOID -EFIAPI -AsmWriteMm2 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm2" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #3 (MM3). - - Writes the current value of MM3. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM3. - -**/ -VOID -EFIAPI -AsmWriteMm3 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm3" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #4 (MM4). - - Writes the current value of MM4. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM4. - -**/ -VOID -EFIAPI -AsmWriteMm4 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm4" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #5 (MM5). - - Writes the current value of MM5. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM5. - -**/ -VOID -EFIAPI -AsmWriteMm5 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm5" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #6 (MM6). - - Writes the current value of MM6. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM6. - -**/ -VOID -EFIAPI -AsmWriteMm6 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm6" // %0 - : - : "m" (Value) - ); -} - - -/** - Writes the current value of 64-bit MMX Register #7 (MM7). - - Writes the current value of MM7. This function is only available on IA32 and - X64. - - @param Value The 64-bit value to write to MM7. - -**/ -VOID -EFIAPI -AsmWriteMm7 ( - IN UINT64 Value - ) -{ - __asm__ __volatile__ ( - "movd %0, %%mm7" // %0 - : - : "m" (Value) - ); -} - - -/** - Reads the current value of Time Stamp Counter (TSC). - - Reads and returns the current value of TSC. This function is only available - on IA-32 and X64. - - @return The current value of TSC - -**/ -UINT64 -EFIAPI -AsmReadTsc ( - VOID - ) -{ - UINT32 LowData; - UINT32 HiData; - - __asm__ __volatile__ ( - "rdtsc" - : "=a" (LowData), - "=d" (HiData) - ); - - return (((UINT64)HiData) << 32) | LowData; -} - - /** Reads the current value of a Performance Counter (PMC). @@ -1662,7 +1102,6 @@ AsmReadPmc ( return (((UINT64)HiData) << 32) | LowData; } - /** Sets up a monitor buffer that is used by AsmMwait(). @@ -1698,7 +1137,6 @@ AsmMonitor ( return Eax; } - /** Executes an MWAIT instruction. @@ -1730,7 +1168,6 @@ AsmMwait ( return Eax; } - /** Executes a WBINVD instruction. @@ -1747,7 +1184,6 @@ AsmWbinvd ( __asm__ __volatile__ ("wbinvd":::"memory"); } - /** Executes a INVD instruction. @@ -1796,5 +1232,3 @@ AsmFlushCacheLine ( return LinearAddress; } - - -- 2.21.0.windows.1