[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EdkIIGlueLib / Library / BaseMemoryLib / X64 / CompareMem.S

#\r
# ConvertAsm.py: Automatically generated from CompareMem.asm\r
#\r
#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\r
# All rights reserved. This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   CompareMem.S\r
#\r
# Abstract:\r
#\r
#   CompareMem function\r
#\r
# Notes:\r
#\r
#   The following BaseMemoryLib instances share the same version of this file:\r
#\r
#       BaseMemoryLibRepStr\r
#       BaseMemoryLibMmx\r
#       BaseMemoryLibSse2\r
#\r
#------------------------------------------------------------------------------\r
\r
#include <EdkIIGlueBase.h>\r
#------------------------------------------------------------------------------\r
# INTN\r
# EFIAPI\r
# InternalMemCompareMem (\r
#   IN      CONST VOID                *DestinationBuffer,\r
#   IN      CONST VOID                *SourceBuffer,\r
#   IN      UINTN                     Length\r
#   );\r
#------------------------------------------------------------------------------\r
.intel_syntax\r
.globl ASM_PFX(InternalMemCompareMem)\r
ASM_PFX(InternalMemCompareMem):\r
    push    rsi\r
    push    rdi\r
    mov     rsi, rcx\r
    mov     rdi, rdx\r
    mov     rcx, r8\r
    repe    cmpsb\r
    movzx   rax, byte ptr [rsi - 1]\r
    movzx   rdx, byte ptr [rdi - 1]\r
    sub     rax, rdx\r
    pop     rdi\r
    pop     rsi\r
    ret\r
\r
Commit	Line	Data
b341712e	1	#\r
	2	# ConvertAsm.py: Automatically generated from CompareMem.asm\r
	3	#\r
	4	#------------------------------------------------------------------------------\r
	5	#\r
	6	# Copyright (c) 2006, Intel Corporation\r
	7	# All rights reserved. This program and the accompanying materials\r
	8	# are licensed and made available under the terms and conditions of the BSD License\r
	9	# which accompanies this distribution. The full text of the license may be found at\r
	10	# http://opensource.org/licenses/bsd-license.php\r
	11	#\r
	12	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	13	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	14	#\r
	15	# Module Name:\r
	16	#\r
	17	# CompareMem.S\r
	18	#\r
	19	# Abstract:\r
	20	#\r
	21	# CompareMem function\r
	22	#\r
	23	# Notes:\r
	24	#\r
	25	# The following BaseMemoryLib instances share the same version of this file:\r
	26	#\r
	27	# BaseMemoryLibRepStr\r
	28	# BaseMemoryLibMmx\r
	29	# BaseMemoryLibSse2\r
	30	#\r
	31	#------------------------------------------------------------------------------\r
	32	\r
	33	#include <EdkIIGlueBase.h>\r
	34	#------------------------------------------------------------------------------\r
	35	# INTN\r
	36	# EFIAPI\r
	37	# InternalMemCompareMem (\r
	38	# IN CONST VOID *DestinationBuffer,\r
	39	# IN CONST VOID *SourceBuffer,\r
	40	# IN UINTN Length\r
	41	# );\r
	42	#------------------------------------------------------------------------------\r
	43	.intel_syntax\r
	44	.globl ASM_PFX(InternalMemCompareMem)\r
	45	ASM_PFX(InternalMemCompareMem):\r
	46	push rsi\r
	47	push rdi\r
	48	mov rsi, rcx\r
	49	mov rdi, rdx\r
	50	mov rcx, r8\r
	51	repe cmpsb\r
	52	movzx rax, byte ptr [rsi - 1]\r
	53	movzx rdx, byte ptr [rdi - 1]\r
	54	sub rax, rdx\r
	55	pop rdi\r
	56	pop rsi\r
	57	ret\r
	58	\r