[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EfiCommonLib / X64 / EfiSetMemRep4.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2008, Intel Corporation. All rights reserved.<BR>\r
# 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
#   EfiSetMemRep4.S\r
#\r
# Abstract:\r
#\r
#   SetMem function\r
#\r
# Notes:\r
#\r
#------------------------------------------------------------------------------\r
#include <EfiBind.h>\r
\r
    .code: \r
\r
.globl ASM_PFX(EfiCommonLibCopyMem)\r
\r
#------------------------------------------------------------------------------\r
# VOID\r
# EfiCommonLibSetMem (\r
#   OUT     VOID                      *Buffer,\r
#   IN      UINTN                     Size,\r
#   IN      UINT8                     Value\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiCommonLibSetMem):\r
      push   %rdi\r
      cmp    $0x0,%rdx\r
      je     SetDone\r
      mov    %rcx,%rdi\r
      mov    %r8b,%al\r
      mov    %al,%ah\r
      shrd   $0x10,%eax,%ecx\r
      shld   $0x10,%ecx,%eax\r
      mov    %rdx,%rcx\r
      shr    $0x2,%rcx\r
      rep stos %eax,%es:(%rdi)\r
      mov    %rdx,%rcx\r
      and    $0x3,%rcx\r
      rep stos %al,%es:(%rdi)\r
SetDone:\r
      pop    %rdi\r
      retq   \r
Commit	Line	Data
2b53e394 HT	1	#------------------------------------------------------------------------------\r
	2	#\r
	3	# Copyright (c) 2008, Intel Corporation. All rights reserved.<BR>\r
	4	# This program and the accompanying materials\r
	5	# are licensed and made available under the terms and conditions of the BSD License\r
	6	# which accompanies this distribution. The full text of the license may be found at\r
	7	# http://opensource.org/licenses/bsd-license.php\r
	8	#\r
	9	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	10	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	11	#\r
	12	# Module Name:\r
	13	#\r
	14	# EfiSetMemRep4.S\r
	15	#\r
	16	# Abstract:\r
	17	#\r
	18	# SetMem function\r
	19	#\r
	20	# Notes:\r
	21	#\r
	22	#------------------------------------------------------------------------------\r
	23	#include <EfiBind.h>\r
	24	\r
	25	.code: \r
	26	\r
	27	.globl ASM_PFX(EfiCommonLibCopyMem)\r
	28	\r
	29	#------------------------------------------------------------------------------\r
	30	# VOID\r
	31	# EfiCommonLibSetMem (\r
	32	# OUT VOID *Buffer,\r
	33	# IN UINTN Size,\r
	34	# IN UINT8 Value\r
	35	# );\r
	36	#------------------------------------------------------------------------------\r
	37	ASM_PFX(EfiCommonLibSetMem):\r
	38	push %rdi\r
	39	cmp $0x0,%rdx\r
	40	je SetDone\r
	41	mov %rcx,%rdi\r
	42	mov %r8b,%al\r
	43	mov %al,%ah\r
	44	shrd $0x10,%eax,%ecx\r
	45	shld $0x10,%ecx,%eax\r
	46	mov %rdx,%rcx\r
	47	shr $0x2,%rcx\r
	48	rep stos %eax,%es:(%rdi)\r
	49	mov %rdx,%rcx\r
	50	and $0x3,%rcx\r
	51	rep stos %al,%es:(%rdi)\r
	52	SetDone:\r
	53	pop %rdi\r
	54	retq \r