From eb227e96bd06a5b0f2f933187a679e7fb3382cd9 Mon Sep 17 00:00:00 2001 From: bxing Date: Fri, 28 Jul 2006 07:28:19 +0000 Subject: 1. Updated function headers for all assembly function 2. Optimized register usage in SetMemXX functions in all lib instances 3. Fixed a logical error in CopyMem for all lib instances git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1139 6f19259b-4bc3-4df7-8a09-765794883524 --- .../Library/BaseMemoryLibMmx/BaseMemoryLibMmx.msa | 1 + MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S | 16 ++++--- .../Library/BaseMemoryLibMmx/Ia32/CompareMem.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S | 32 ++++++------- MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm | 27 ++++------- MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.S | 16 ++++--- MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.S | 14 ++++-- MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.S | 18 +++++--- MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.S | 14 ++++-- MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.S | 39 ++++++++-------- MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.asm | 28 ++++++----- MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S | 27 ++++++----- MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.asm | 16 ++++--- MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S | 41 +++++++--------- MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm | 34 +++++++------- MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.S | 25 ++++------ MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.asm | 8 ++-- MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S | 18 +++----- MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.asm | 9 ++-- MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.asm | 34 +++++++------- MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem16.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem32.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem64.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm | 9 ++++ MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.asm | 23 ++++++--- MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm | 21 ++++++--- MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.asm | 30 +++++++----- MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm | 21 ++++++--- MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm | 54 ++++++++++++++++++++++ MdePkg/Library/BaseMemoryLibMmx/ZeroMemWrapper.c | 4 +- 35 files changed, 418 insertions(+), 242 deletions(-) create mode 100644 MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm (limited to 'MdePkg/Library/BaseMemoryLibMmx') diff --git a/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.msa b/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.msa index 978a3628a6..78eae20544 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.msa +++ b/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.msa @@ -89,6 +89,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. X64/ScanMem16.asm X64/ScanMem32.asm X64/ScanMem64.asm + X64/ZeroMem.asm diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S index c7e0b8a2a1..7901b82a44 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.S @@ -27,11 +27,17 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .code: - .global _InternalMemCompareMem + +#------------------------------------------------------------------------------ +# INTN +# EFIAPI +# InternalMemCompareMem ( +# IN CONST VOID *DestinationBuffer, +# IN CONST VOID *SourceBuffer, +# IN UINTN Length +# ); +#------------------------------------------------------------------------------ _InternalMemCompareMem: push %esi push %edi @@ -45,5 +51,3 @@ _InternalMemCompareMem: pop %edi pop %esi ret - - diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.asm index 3cf6fe7f73..1d0e7fad39 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CompareMem.asm @@ -31,6 +31,15 @@ .model flat,C .code +;------------------------------------------------------------------------------ +; INTN +; EFIAPI +; InternalMemCompareMem ( +; IN CONST VOID *DestinationBuffer, +; IN CONST VOID *SourceBuffer, +; IN UINTN Length +; ); +;------------------------------------------------------------------------------ InternalMemCompareMem PROC USES esi edi mov esi, [esp + 12] mov edi, [esp + 16] diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S index fff8bde5ea..d644b34675 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.S @@ -21,32 +21,29 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .xmm: - .code: +.global _InternalMemCopyMem #------------------------------------------------------------------------------ # VOID * -# _mem_CopyMem ( +# EFIAPI +# InternalMemCopyMem ( # IN VOID *Destination, # IN VOID *Source, # IN UINTN Count -# ) +# ); #------------------------------------------------------------------------------ -.global _InternalMemCopyMem _InternalMemCopyMem: push %esi push %edi movl 16(%esp), %esi # esi <- Source movl 12(%esp), %edi # edi <- Destination movl 20(%esp), %edx # edx <- Count - leal -1(%edi,%edx,), %eax # eax <- End of Destination + leal -1(%esi,%edx,), %eax # eax <- End of Source cmpl %edi, %esi jae L0 - cmpl %esi, %eax # Overlapped? + cmpl %edi, %eax # Overlapped? jae @CopyBackward # Copy backward if overlapped -L0: +L0: xorl %ecx, %ecx subl %esi, %ecx andl $7, %ecx # ecx + esi aligns on 8-byte boundary @@ -56,7 +53,7 @@ L0: subl %ecx, %edx # edx <- remaining bytes to copy rep movsb -L1: +L1: movl %edx, %ecx andl $7, %edx shrl $3, %ecx # ecx <- # of Qwords to copy @@ -64,22 +61,21 @@ L1: pushl %eax pushl %eax movq %mm0, (%esp) # save mm0 -L2: +L2: movq (%esi), %mm0 - movntq %mm0, (%edi) + movq %mm0, (%edi) addl $8, %esi addl $8, %edi loop L2 - mfence movq (%esp), %mm0 # restore mm0 popl %ecx # stack cleanup popl %ecx # stack cleanup jmp @CopyBytes -@CopyBackward: - movl %eax, %edi # edi <- Last byte in Destination - leal -1(%esi,%edx,), %esi # esi <- Last byte in Source +@CopyBackward: + movl %eax, %esi # esi <- Last byte in Source + leal -1(%edi,%edx,), %edi # edi <- Last byte in Destination std -@CopyBytes: +@CopyBytes: movl %edx, %ecx rep movsb diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm index b709a809d5..1b8b3c5dcd 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm @@ -23,35 +23,27 @@ .686 .model flat,C - .xmm + .mmx .code ;------------------------------------------------------------------------------ ; VOID * -; _mem_CopyMem ( +; EFIAPI +; InternalMemCopyMem ( ; IN VOID *Destination, ; IN VOID *Source, ; IN UINTN Count -; ) +; ); ;------------------------------------------------------------------------------ InternalMemCopyMem PROC USES esi edi mov esi, [esp + 16] ; esi <- Source mov edi, [esp + 12] ; edi <- Destination mov edx, [esp + 20] ; edx <- Count - lea eax, [edi + edx - 1] ; eax <- End of Destination + lea eax, [esi + edx - 1] ; eax <- End of Source cmp esi, edi jae @F - cmp eax, esi ; Overlapped? + cmp eax, edi ; Overlapped? jae @CopyBackward ; Copy backward if overlapped -@@: - xor ecx, ecx - sub ecx, esi - and ecx, 7 ; ecx + esi aligns on 8-byte boundary - jz @F - cmp ecx, edx - cmova ecx, edx - sub edx, ecx ; edx <- remaining bytes to copy - rep movsb @@: mov ecx, edx and edx, 7 @@ -62,18 +54,17 @@ InternalMemCopyMem PROC USES esi edi movq [esp], mm0 ; save mm0 @@: movq mm0, [esi] - movntq [edi], mm0 + movq [edi], mm0 add esi, 8 add edi, 8 loop @B - mfence movq mm0, [esp] ; restore mm0 pop ecx ; stack cleanup pop ecx ; stack cleanup jmp @CopyBytes @CopyBackward: - mov edi, eax ; edi <- Last byte in Destination - lea esi, [esi + edx - 1] ; esi <- Last byte in Source + mov esi, eax ; esi <- Last byte in Source + lea edi, [edi + edx - 1] ; edi <- Last byte in Destination std @CopyBytes: mov ecx, edx diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.S index e23799e773..1e83064573 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.S @@ -27,11 +27,17 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .code: - .global _InternalMemScanMem16 + +#------------------------------------------------------------------------------ +# CONST VOID * +# EFIAPI +# InternalMemScanMem16 ( +# IN CONST VOID *Buffer, +# IN UINTN Length, +# IN UINT16 Value +# ); +#------------------------------------------------------------------------------ _InternalMemScanMem16: push %edi movl 12(%esp), %ecx @@ -42,5 +48,3 @@ _InternalMemScanMem16: cmovnz %ecx, %eax pop %edi ret - - diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.asm index 7071942ede..57fab61b77 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem16.asm @@ -31,6 +31,15 @@ .model flat,C .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem16 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT16 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem16 PROC USES edi mov ecx, [esp + 12] mov edi, [esp + 8] diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.S index 6b4a919dde..b7b93d9c0c 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.S @@ -27,11 +27,17 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .code: - .global _InternalMemScanMem32 + +#------------------------------------------------------------------------------ +# CONST VOID * +# EFIAPI +# InternalMemScanMem32 ( +# IN CONST VOID *Buffer, +# IN UINTN Length, +# IN UINT32 Value +# ); +#------------------------------------------------------------------------------ _InternalMemScanMem32: push %edi movl 12(%esp), %ecx diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.asm index e6aaf02bc3..6ac857ce16 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem32.asm @@ -31,6 +31,15 @@ .model flat,C .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem32 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT32 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem32 PROC USES edi mov ecx, [esp + 12] mov edi, [esp + 8] diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.S index 00f6d74436..6bbb18a334 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.S @@ -27,18 +27,24 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .code: - .global _InternalMemScanMem64 + +#------------------------------------------------------------------------------ +# CONST VOID * +# EFIAPI +# InternalMemScanMem64 ( +# IN CONST VOID *Buffer, +# IN UINTN Length, +# IN UINT64 Value +# ); +#------------------------------------------------------------------------------ _InternalMemScanMem64: push %edi movl 12(%esp), %ecx movl 16(%esp), %eax movl 20(%esp), %edx movl 8(%esp), %edi -L0: +L0: cmpl (%edi), %eax leal 8(%edi), %edi loopne L0 @@ -46,7 +52,7 @@ L0: cmpl -4(%edi), %edx jecxz L1 jne L0 -L1: +L1: leal -8(%edi), %eax cmovne %ecx, %eax pop %edi diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.asm index f9725a4a5d..ca54f13738 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.asm @@ -31,6 +31,15 @@ .model flat,C .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem64 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT64 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem64 PROC USES edi mov ecx, [esp + 12] mov eax, [esp + 16] diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.S index 57640378b4..fe678fac26 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.S @@ -27,11 +27,17 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .code: - .global _InternalMemScanMem8 + +#------------------------------------------------------------------------------ +# CONST VOID * +# EFIAPI +# InternalMemScanMem8 ( +# IN CONST VOID *Buffer, +# IN UINTN Length, +# IN UINT8 Value +# ); +#------------------------------------------------------------------------------ _InternalMemScanMem8: push %edi movl 12(%esp), %ecx diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.asm index 6ae1900189..a3f65b64fa 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem8.asm @@ -31,6 +31,15 @@ .model flat,C .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem8 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT8 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem8 PROC USES edi mov ecx, [esp + 12] mov edi, [esp + 8] diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.S index 8a893f893a..4e93915caa 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.S @@ -21,44 +21,43 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .xmm: - .code: +.global _InternalMemSetMem #------------------------------------------------------------------------------ # VOID * -# _mem_SetMem ( +# InternalMemSetMem ( # IN VOID *Buffer, # IN UINTN Count, # IN UINT8 Value # ) #------------------------------------------------------------------------------ -.global _InternalMemSetMem _InternalMemSetMem: push %edi + movb 16(%esp), %al + movb %al, %ah + shrdl $16, %eax, %edx + shldl $16, %edx, %eax movl 12(%esp), %ecx # ecx <- Count movl 8(%esp), %edi # edi <- Buffer movl %ecx, %edx + andl $7, %edx shrl $3, %ecx # # of Qwords to set - movb 16(%esp), %al # al <- Value - jz @SetBytes - movb %al, %ah # ax <- Value | (Value << 8) - pushl %ecx - pushl %ecx + jz L1 + addl $0x-10, %esp movq %mm0, (%esp) # save mm0 + movq %mm1, 8(%esp) # save mm1 movd %eax, %mm0 - pshufw $0x0,%mm0,%mm0 -L0: - movntq %mm0, (%edi) + movd %eax, %mm1 + psllq $32, %mm0 + por %mm1, %mm0 # fill mm0 with 8 Value's +L0: + movq %mm0, (%edi) addl $8, %edi - loop L0 - mfence + loopl L0 movq (%esp), %mm0 # restore mm0 - popl %ecx # stack cleanup - popl %ecx -@SetBytes: - andl $7, %edx + movq 8(%esp), %mm1 # restore mm1 + addl $0x10, %esp # stack cleanup +L1: movl %edx, %ecx rep stosb diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.asm index f2c55f1296..c9c48ecf9d 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem.asm @@ -23,40 +23,44 @@ .686 .model flat,C - .xmm + .mmx .code ;------------------------------------------------------------------------------ ; VOID * -; _mem_SetMem ( +; EFIAPI +; InternalMemSetMem ( ; IN VOID *Buffer, ; IN UINTN Count, ; IN UINT8 Value ; ) ;------------------------------------------------------------------------------ InternalMemSetMem PROC USES edi + mov al, [esp + 16] + mov ah, al + shrd edx, eax, 16 + shld eax, edx, 16 mov ecx, [esp + 12] ; ecx <- Count mov edi, [esp + 8] ; edi <- Buffer mov edx, ecx + and edx, 7 shr ecx, 3 ; # of Qwords to set - mov al, [esp + 16] ; al <- Value jz @SetBytes - mov ah, al ; ax <- Value | (Value << 8) - push ecx - push ecx + add esp, -10h movq [esp], mm0 ; save mm0 + movq [esp + 8], mm1 ; save mm1 movd mm0, eax - pshufw mm0, mm0, 0 ; fill mm0 with 8 Value's + movd mm1, eax + psllq mm0, 32 + por mm0, mm1 ; fill mm0 with 8 Value's @@: - movntq [edi], mm0 + movq [edi], mm0 add edi, 8 loop @B - mfence movq mm0, [esp] ; restore mm0 - pop ecx ; stack cleanup - pop ecx + movq mm1, [esp + 8] ; restore mm1 + add esp, 10h ; stack cleanup @SetBytes: - and edx, 7 mov ecx, edx rep stosb mov eax, [esp + 8] ; eax <- Buffer as return value diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S index bcbd49e442..9898d28f98 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S @@ -21,37 +21,36 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .xmm: - .code: +.global _InternalMemSetMem16 #------------------------------------------------------------------------------ # VOID * -# _mem_SetMem16 ( +# InternalMemSetMem16 ( # IN VOID *Buffer, # IN UINTN Count, # IN UINT16 Value # ) #------------------------------------------------------------------------------ -.global _InternalMemSetMem16 _InternalMemSetMem16: push %edi + movl 16(%esp), %eax + shrdl $16, %eax, %edx + shldl $16, %edx, %eax movl 12(%esp), %edx movl 8(%esp), %edi movl %edx, %ecx andl $3, %edx shrl $2, %ecx - movl 16(%esp), %eax - jz @SetWords + jz L1 movd %eax, %mm0 - pshufw $0, %mm0, %mm0 -L0: - movntq %mm0, (%edi) + movd %eax, %mm1 + psllq $32, %mm0 + por %mm1, %mm0 +L0: + movq %mm0, (%edi) addl $8, %edi - loop L0 - mfence -@SetWords: + loopl L0 +L1: movl %edx, %ecx rep stosw diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.asm index f9dc533fd8..e934226658 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.asm @@ -23,32 +23,36 @@ .686 .model flat,C - .xmm + .mmx .code ;------------------------------------------------------------------------------ ; VOID * -; _mem_SetMem16 ( +; EFIAPI +; InternalMemSetMem16 ( ; IN VOID *Buffer, ; IN UINTN Count, ; IN UINT16 Value ; ) ;------------------------------------------------------------------------------ InternalMemSetMem16 PROC USES edi + mov eax, [esp + 16] + shrd edx, eax, 16 + shld eax, edx, 16 mov edx, [esp + 12] mov edi, [esp + 8] mov ecx, edx and edx, 3 shr ecx, 2 - mov eax, [esp + 16] jz @SetWords movd mm0, eax - pshufw mm0, mm0, 0 + movd mm1, eax + psllq mm0, 32 + por mm0, mm1 @@: - movntq [edi], mm0 + movq [edi], mm0 add edi, 8 loop @B - mfence @SetWords: mov ecx, edx rep stosw diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S index 27fd6174bd..8281652ad9 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S @@ -21,39 +21,32 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .xmm: - .code: +.global _InternalMemSetMem32 #------------------------------------------------------------------------------ # VOID * -# _mem_SetMem32 ( +# InternalMemSetMem32 ( # IN VOID *Buffer, # IN UINTN Count, # IN UINT32 Value # ) #------------------------------------------------------------------------------ -.global _InternalMemSetMem32 _InternalMemSetMem32: - push %edi - movl 12(%esp), %edx - movl 8(%esp), %edi - movl %edx, %ecx + movl 4(%esp), %eax + movl 8(%esp), %ecx + movd 12(%esp), %mm0 shrl %ecx - movd 16(%esp), %mm0 - movl %edi, %eax - jz @SetDwords - pshufw $0x44, %mm0, %mm0 -L0: - movntq %mm0, (%edi) - addl $8, %edi - loopl L0 - mfence -@SetDwords: - testb $1, %dl + movl %eax, %edx jz L1 - movd %mm0, (%edi) -L1: - pop %edi + movq %mm0, %mm1 + psllq $32, %mm1 + por %mm1, %mm0 +L0: + movq %mm0, (%edx) + lea 8(%edx), %edx + loopl L0 +L1: + jnc L2 + movd %mm0, (%edx) +L2: ret diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm index 7f24fcd744..c2e4869e47 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.asm @@ -23,35 +23,35 @@ .686 .model flat,C - .xmm + .mmx .code ;------------------------------------------------------------------------------ ; VOID * -; _mem_SetMem32 ( +; EFIAPI +; InternalMemSetMem32 ( ; IN VOID *Buffer, ; IN UINTN Count, ; IN UINT32 Value -; ) +; ); ;------------------------------------------------------------------------------ -InternalMemSetMem32 PROC USES edi - mov edx, [esp + 12] - mov edi, [esp + 8] - mov ecx, edx - shr ecx, 1 - movd mm0, [esp + 16] - mov eax, edi +InternalMemSetMem32 PROC + mov eax, [esp + 4] ; eax <- Buffer as return value + mov ecx, [esp + 8] ; ecx <- Count + movd mm0, [esp + 12] ; mm0 <- Value + shr ecx, 1 ; ecx <- number of qwords to set + mov edx, eax ; edx <- Buffer jz @SetDwords - pshufw mm0, mm0, 44h + movq mm1, mm0 + psllq mm1, 32 + por mm0, mm1 @@: - movntq [edi], mm0 - add edi, 8 + movq [edx], mm0 + lea edx, [edx + 8] ; use "lea" to avoid change in flags loop @B - mfence @SetDwords: - test dl, 1 - jz @F - movd [edi], mm0 + jnc @F + movd [edx], mm0 @@: ret InternalMemSetMem32 ENDP diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.S index 9699581606..5eef027e57 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.S @@ -21,30 +21,23 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .xmm: - .code: +.global _InternalMemSetMem64 #------------------------------------------------------------------------------ # VOID * -# _mem_SetMem64 ( +# InternalMemSetMem64 ( # IN VOID *Buffer, # IN UINTN Count, # IN UINT64 Value # ) #------------------------------------------------------------------------------ -.global _InternalMemSetMem64 _InternalMemSetMem64: - push %edi - movq 16(%esp), %mm0 - movl 12(%esp), %ecx - movl 8(%esp), %edi - movl %edi, %eax -L0: - movntq %mm0, (%edi) - addl $8, %edi + movl 4(%esp), %eax + movl 8(%esp), %ecx + movq 12(%esp), %mm0 + movl %eax, %edx +L0: + movq %mm0, (%edx) + lea 8(%edx), %edx loopl L0 - mfence - pop %edi ret diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.asm index 310f418d0c..027483ba3f 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem64.asm @@ -23,12 +23,13 @@ .686 .model flat,C - .xmm + .mmx .code ;------------------------------------------------------------------------------ ; VOID * -; _mem_SetMem64 ( +; EFIAPI +; InternalMemSetMem64 ( ; IN VOID *Buffer, ; IN UINTN Count, ; IN UINT64 Value @@ -40,10 +41,9 @@ InternalMemSetMem64 PROC movq mm0, [esp + 12] mov edx, eax @@: - movntq [edx], mm0 + movq [edx], mm0 add edx, 8 loop @B - mfence ret InternalMemSetMem64 ENDP diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S index 0bb19c7da2..f51ce8f98e 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S @@ -21,19 +21,16 @@ # #------------------------------------------------------------------------------ - .686: - #.MODEL flat,C - .xmm: - .code: +.global _InternalMemZeroMem #------------------------------------------------------------------------------ # VOID * -# _mem_ZeroMem ( +# EFIAPI +# InternalMemZeroMem ( # IN VOID *Buffer, # IN UINTN Count -# ) +# ); #------------------------------------------------------------------------------ -.global _InternalMemZeroMem _InternalMemZeroMem: push %edi movl 8(%esp), %edi @@ -42,12 +39,11 @@ _InternalMemZeroMem: shrl $3, %ecx jz @ZeroBytes pxor %mm0, %mm0 -L0: - movntq %mm0, (%edi) +L0: + movq %mm0, (%edi) addl $8, %edi loop L0 - mfence -@ZeroBytes: +@ZeroBytes: andl $7, %edx xorl %eax, %eax movl %edx, %ecx diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.asm index 31ef120525..a75480bd40 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.asm @@ -23,15 +23,15 @@ .686 .model flat,C - .xmm + .mmx .code ;------------------------------------------------------------------------------ ; VOID * -; _mem_ZeroMem ( +; InternalMemZeroMem ( ; IN VOID *Buffer, ; IN UINTN Count -; ) +; ); ;------------------------------------------------------------------------------ InternalMemZeroMem PROC USES edi mov edi, [esp + 8] @@ -41,10 +41,9 @@ InternalMemZeroMem PROC USES edi jz @ZeroBytes pxor mm0, mm0 @@: - movntq [edi], mm0 + movq [edi], mm0 add edi, 8 loop @B - mfence @ZeroBytes: and edx, 7 xor eax, eax diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.asm index b8e289bb27..554bc07c64 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.asm @@ -29,6 +29,15 @@ .code +;------------------------------------------------------------------------------ +; INTN +; EFIAPI +; InternalMemCompareMem ( +; IN CONST VOID *DestinationBuffer, +; IN CONST VOID *SourceBuffer, +; IN UINTN Length +; ); +;------------------------------------------------------------------------------ InternalMemCompareMem PROC USES rsi rdi mov rsi, rcx mov rdi, rdx diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.asm index 801cf92750..b57192edbe 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.asm @@ -23,42 +23,42 @@ .code +;------------------------------------------------------------------------------ +; VOID * +; EFIAPI +; InternalMemCopyMem ( +; OUT VOID *DestinationBuffer, +; IN CONST VOID *SourceBuffer, +; IN UINTN Length +; ); +;------------------------------------------------------------------------------ InternalMemCopyMem PROC USES rsi rdi mov rsi, rdx ; rsi <- Source mov rdi, rcx ; rdi <- Destination - lea r9, [rdi + r8 - 1] ; r9 <- End of Destination + lea r9, [rsi + r8 - 1] ; r9 <- End of Source cmp rsi, rdi mov rax, rdi ; rax <- Destination as return value jae @F - cmp r9, rsi + cmp r9, rdi jae @CopyBackward ; Copy backward if overlapped -@@: - xor rcx, rcx - sub rcx, rsi - and rcx, 7 ; rcx + rsi aligns on 8-byte boundary - jz @F - cmp rcx, r8 - cmova rcx, r8 - sub r8, rcx ; r8 <- remaining bytes to copy - rep movsb @@: mov rcx, r8 and r8, 7 shr rcx, 3 ; rcx <- # of Qwords to copy jz @CopyBytes - DB 49h, 0fh, 7eh, 0c2h ; movq r10, mm0 ; save mm0 + DB 49h, 0fh, 7eh, 0c2h ; movd r10, mm0 (Save mm0 in r10) @@: - DB 48h, 0fh, 6fh, 06h ; movq mm0, [rsi] - DB 48h, 0fh, 0e7h, 07h ; movntq [rdi], mm0 + DB 0fh, 6fh, 06h ; movd mm0, [rsi] + DB 0fh, 0e7h, 07h ; movntq [rdi], mm0 add rsi, 8 add rdi, 8 loop @B mfence - DB 49h, 0fh, 6eh, 0c2h ; movq mm0, r10 ; restore mm0 + DB 49h, 0fh, 6eh, 0c2h ; movd mm0, r10 (Restore mm0) jmp @CopyBytes @CopyBackward: - mov rdi, r9 ; rdi <- End of Destination - lea rsi, [rsi + r8 - 1] ; rsi <- End of Source + mov rsi, r9 ; rsi <- End of Source + lea rdi, [rdi + r8 - 1] ; rdi <- End of Destination std ; set direction flag @CopyBytes: mov rcx, r8 diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem16.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem16.asm index 6af88fae5b..a2538c2cca 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem16.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem16.asm @@ -29,6 +29,15 @@ .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem16 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT16 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem16 PROC USES rdi mov rdi, rcx mov rax, r8 diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem32.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem32.asm index f9c9feb00e..e0523d8547 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem32.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem32.asm @@ -29,6 +29,15 @@ .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem32 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT32 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem32 PROC USES rdi mov rdi, rcx mov rax, r8 diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem64.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem64.asm index 2f286c9e2f..0e7e9c782f 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem64.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem64.asm @@ -29,6 +29,15 @@ .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem64 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT64 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem64 PROC USES rdi mov rdi, rcx mov rax, r8 diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm index 4027ece768..879273f960 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm @@ -29,6 +29,15 @@ .code +;------------------------------------------------------------------------------ +; CONST VOID * +; EFIAPI +; InternalMemScanMem8 ( +; IN CONST VOID *Buffer, +; IN UINTN Length, +; IN UINT8 Value +; ); +;------------------------------------------------------------------------------ InternalMemScanMem8 PROC USES rdi mov rdi, rcx mov rcx, rdx diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.asm index 9688c3d65b..923beef6c1 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.asm @@ -23,24 +23,33 @@ .code +;------------------------------------------------------------------------------ +; VOID * +; EFIAPI +; InternalMemSetMem ( +; OUT VOID *Buffer, +; IN UINTN Length, +; IN UINT8 Value +; ); +;------------------------------------------------------------------------------ InternalMemSetMem PROC USES rdi mov rax, r8 mov ah, al - DB 48h, 0fh, 6eh, 0c0h ; movq mm0, rax + DB 48h, 0fh, 6eh, 0c0h ; movd mm0, rax mov r8, rcx - mov rdi, r8 + mov rdi, r8 ; rdi <- Buffer mov rcx, rdx + and edx, 7 shr rcx, 3 jz @SetBytes - DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h -@@: - DB 48h, 0fh, 0e7h, 07h ; movntq [rdi], mm0 + DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h +@@: + DB 0fh, 0e7h, 07h ; movntq [rdi], mm0 add rdi, 8 loop @B mfence @SetBytes: - and rdx, 7 - mov rcx, rdx + mov ecx, edx rep stosb mov rax, r8 ret diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm index a95020876c..01b72c55d5 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm @@ -23,23 +23,32 @@ .code +;------------------------------------------------------------------------------ +; VOID * +; EFIAPI +; InternalMemSetMem16 ( +; OUT VOID *Buffer, +; IN UINTN Length, +; IN UINT16 Value +; ); +;------------------------------------------------------------------------------ InternalMemSetMem16 PROC USES rdi mov rax, r8 - DB 48h, 0fh, 6eh, 0c0h ; movq mm0, rax + DB 48h, 0fh, 6eh, 0c0h ; movd mm0, rax mov r8, rcx mov rdi, r8 mov rcx, rdx - and rdx, 3 + and edx, 3 shr rcx, 2 jz @SetWords - DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h -@@: - DB 48h, 0fh, 0e7h, 07h ; movntq [rdi], mm0 + DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h +@@: + DB 0fh, 0e7h, 07h ; movntq [rdi], mm0 add rdi, 8 loop @B mfence @SetWords: - mov rcx, rdx + mov ecx, edx rep stosw mov rax, r8 ret diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.asm index d835543767..89cf175608 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.asm @@ -23,23 +23,29 @@ .code -InternalMemSetMem32 PROC USES rdi - DB 49h, 0fh, 6eh, 0c0h ; movq mm0, r8 ; mm0 <- Value - mov rax, rcx ; rax <- Buffer - mov rdi, rax - mov rcx, rdx - shr rcx, 1 +;------------------------------------------------------------------------------ +; VOID * +; InternalMemSetMem32 ( +; IN VOID *Buffer, +; IN UINTN Count, +; IN UINT32 Value +; ) +;------------------------------------------------------------------------------ +InternalMemSetMem32 PROC + DB 49h, 0fh, 6eh, 0c0h ; movd mm0, r8 (Value) + mov rax, rcx ; rax <- Buffer + xchg rcx, rdx ; rcx <- Count rdx <- Buffer + shr rcx, 1 ; rcx <- # of qwords to set jz @SetDwords - DB 0fh, 70h, 0C0h, 44h ; pshufw mm0, mm0, 44h + DB 0fh, 70h, 0C0h, 44h ; pshufw mm0, mm0, 44h @@: - DB 48h, 0fh, 0e7h, 07h ; movntq [rdi], mm0 - add rdi, 8 + DB 0fh, 0e7h, 02h ; movntq [rdx], mm0 + lea rdx, [rdx + 8] ; use "lea" to avoid flag changes loop @B mfence @SetDwords: - test dl, 1 - jz @F - DB 0fh, 7eh, 07h ; movd [rdi], mm0 + jnc @F + DB 0fh, 7eh, 02h ; movd [rdx], mm0 @@: ret InternalMemSetMem32 ENDP diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm index 5780647445..454d6234bf 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm @@ -23,14 +23,21 @@ .code -InternalMemSetMem64 PROC USES rdi - DB 49h, 0fh, 6eh, 0c0h; movq mm0, r8 ; mm0 <- Value - mov rax, rcx ; rax <- Buffer - xchg rcx, rdx ; rcx <- Count - mov rdi, rax +;------------------------------------------------------------------------------ +; VOID * +; InternalMemSetMem64 ( +; IN VOID *Buffer, +; IN UINTN Count, +; IN UINT64 Value +; ) +;------------------------------------------------------------------------------ +InternalMemSetMem64 PROC + DB 49h, 0fh, 6eh, 0c0h ; movd mm0, r8 (Value) + mov rax, rcx ; rax <- Buffer + xchg rcx, rdx ; rcx <- Count @@: - DB 48h, 0fh, 0e7h, 07h; movntq [rdi], mm0 - add rdi, 8 + DB 0fh, 0e7h, 02h ; movntq [rdx], mm0 + add rdx, 8 loop @B mfence ret diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm new file mode 100644 index 0000000000..e9035a3c14 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm @@ -0,0 +1,54 @@ +;------------------------------------------------------------------------------ +; +; Copyright (c) 2006, Intel Corporation +; All rights reserved. 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. +; +; Module Name: +; +; ZeroMem.asm +; +; Abstract: +; +; ZeroMem function +; +; Notes: +; +;------------------------------------------------------------------------------ + + .code + +;------------------------------------------------------------------------------ +; VOID * +; InternalMemZeroMem ( +; IN VOID *Buffer, +; IN UINTN Count +; ); +;------------------------------------------------------------------------------ +InternalMemZeroMem PROC USES rdi + mov rdi, rcx + mov rcx, rdx + mov r8, rdi + and edx, 7 + shr rcx, 3 + jz @ZeroBytes + DB 0fh, 0efh, 0c0h ; pxor mm0, mm0 +@@: + DB 0fh, 0e7h, 7 ; movntq [rdi], mm0 + add rdi, 8 + loop @B + DB 0fh, 0aeh, 0f0h ; mfence +@ZeroBytes: + xor eax, eax + mov ecx, edx + rep stosb + mov rax, r8 + ret +InternalMemZeroMem ENDP + + END diff --git a/MdePkg/Library/BaseMemoryLibMmx/ZeroMemWrapper.c b/MdePkg/Library/BaseMemoryLibMmx/ZeroMemWrapper.c index 08247681c5..e2ffb5c3c2 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/ZeroMemWrapper.c +++ b/MdePkg/Library/BaseMemoryLibMmx/ZeroMemWrapper.c @@ -30,7 +30,7 @@ This function fills Length bytes of Buffer with zeros, and returns Buffer. If Length > 0 and Buffer is NULL, then ASSERT(). - If Length is greater than (MAX_ADDRESS – Buffer + 1), then ASSERT(). + If Length is greater than (MAX_ADDRESS – Buffer + 1), then ASSERT(). @param Buffer Pointer to the target buffer to fill with zeros. @param Length Number of bytes in Buffer to fill with zeros. @@ -47,5 +47,5 @@ ZeroMem ( { ASSERT (!(Buffer == NULL && Length > 0)); ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1)); - return InternalMemSetMem (Buffer, Length, 0); + return InternalMemZeroMem (Buffer, Length); } -- cgit v1.2.3