diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S | 146 |
1 files changed, 73 insertions, 73 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S b/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S index 5d915d4a08..4410082078 100644 --- a/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S +++ b/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem.S @@ -1,73 +1,73 @@ -# -# ConvertAsm.py: Automatically generated from SetMem.asm -# -#------------------------------------------------------------------------------ -# -# 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: -# -# SetMem.S -# -# Abstract: -# -# SetMem function -# -# Notes: -# -#------------------------------------------------------------------------------ - - -#------------------------------------------------------------------------------ -# VOID * -# EFIAPI -# InternalMemSetMem ( -# IN VOID *Buffer, -# IN UINTN Count, -# IN UINT8 Value -# ) -#------------------------------------------------------------------------------ -.intel_syntax noprefix -.globl ASM_PFX(InternalMemSetMem) -ASM_PFX(InternalMemSetMem): - push rdi - mov rdi, rcx # rdi <- Buffer - mov al, r8b # al <- Value - mov r9, rdi # r9 <- Buffer as return value - xor rcx, rcx - sub rcx, rdi - and rcx, 15 # rcx + rdi aligns on 16-byte boundary - jz L0 - cmp rcx, rdx - cmova rcx, rdx - sub rdx, rcx - rep stosb -L0: - mov rcx, rdx - and rdx, 15 - shr rcx, 4 - jz L_SetBytes - mov ah, al # ax <- Value repeats twice - movdqa [rsp + 0x10], xmm0 # save xmm0 - movd xmm0, eax # xmm0[0..16] <- Value repeats twice - pshuflw xmm0, xmm0, 0 # xmm0[0..63] <- Value repeats 8 times - movlhps xmm0, xmm0 # xmm0 <- Value repeats 16 times -L1: - movntdq [rdi], xmm0 # rdi should be 16-byte aligned - add rdi, 16 - loop L1 - mfence - movdqa xmm0, [rsp + 0x10] # restore xmm0 -L_SetBytes: - mov ecx, edx # high 32 bits of rcx are always zero - rep stosb - mov rax, r9 # rax <- Return value - pop rdi - ret +#
+# ConvertAsm.py: Automatically generated from SetMem.asm
+#
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+# SetMem.S
+#
+# Abstract:
+#
+# SetMem function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+# VOID *
+# EFIAPI
+# InternalMemSetMem (
+# IN VOID *Buffer,
+# IN UINTN Count,
+# IN UINT8 Value
+# )
+#------------------------------------------------------------------------------
+.intel_syntax noprefix
+.globl ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+ push rdi
+ mov rdi, rcx # rdi <- Buffer
+ mov al, r8b # al <- Value
+ mov r9, rdi # r9 <- Buffer as return value
+ xor rcx, rcx
+ sub rcx, rdi
+ and rcx, 15 # rcx + rdi aligns on 16-byte boundary
+ jz L0
+ cmp rcx, rdx
+ cmova rcx, rdx
+ sub rdx, rcx
+ rep stosb
+L0:
+ mov rcx, rdx
+ and rdx, 15
+ shr rcx, 4
+ jz L_SetBytes
+ mov ah, al # ax <- Value repeats twice
+ movdqa [rsp + 0x10], xmm0 # save xmm0
+ movd xmm0, eax # xmm0[0..16] <- Value repeats twice
+ pshuflw xmm0, xmm0, 0 # xmm0[0..63] <- Value repeats 8 times
+ movlhps xmm0, xmm0 # xmm0 <- Value repeats 16 times
+L1:
+ movntdq [rdi], xmm0 # rdi should be 16-byte aligned
+ add rdi, 16
+ loop L1
+ mfence
+ movdqa xmm0, [rsp + 0x10] # restore xmm0
+L_SetBytes:
+ mov ecx, edx # high 32 bits of rcx are always zero
+ rep stosb
+ mov rax, r9 # rax <- Return value
+ pop rdi
+ ret
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