[mirror_edk2.git] / OldMdePkg / Library / BaseLib / X64 / CpuIdEx.S

#------------------------------------------------------------------------------
#
# 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:
#
#   CpuIdEx.Asm
#
# Abstract:
#
#   AsmCpuidEx function
#
# Notes:
#
#------------------------------------------------------------------------------

#------------------------------------------------------------------------------
#  UINT32
#  EFIAPI
#  AsmCpuidEx (
#    IN   UINT32  RegisterInEax,
#    IN   UINT32  RegisterInEcx,
#    OUT  UINT32  *RegisterOutEax  OPTIONAL,
#    OUT  UINT32  *RegisterOutEbx  OPTIONAL,
#    OUT  UINT32  *RegisterOutEcx  OPTIONAL,
#    OUT  UINT32  *RegisterOutEdx  OPTIONAL
#    )
#------------------------------------------------------------------------------
.global _AsmCpuidEx
_AsmCpuidEx:
    push    %rbx
    movl    %ecx,%eax
    movl    %edx,%ecx
    push    %rax
    cpuid
    mov     0x38(%rsp), %r10
    test    %r10, %r10
    jz      L1
    mov     %ecx,(%r10)
L1: 
    mov     %r8, %rcx
    jrcxz   L2
    movl    %eax,(%rcx)
L2: 
    mov     %r9, %rcx
    jrcxz   L3
    mov     %ebx, (%rcx)
L3: 
    mov     0x40(%rsp), %rcx
    jrcxz   L4
    mov     %edx, (%rcx)
L4: 
    pop     %rax
    pop     %rbx
    ret
Commit	Line	Data
e29e52e7	1	#------------------------------------------------------------------------------
	2	#
	3	# Copyright (c) 2006, Intel Corporation
	4	# All rights reserved. This program and the accompanying materials
	5	# are licensed and made available under the terms and conditions of the BSD License
	6	# which accompanies this distribution. The full text of the license may be found at
	7	# http://opensource.org/licenses/bsd-license.php
	8	#
	9	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
	10	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
	11	#
	12	# Module Name:
	13	#
	14	# CpuIdEx.Asm
	15	#
	16	# Abstract:
	17	#
	18	# AsmCpuidEx function
	19	#
	20	# Notes:
	21	#
	22	#------------------------------------------------------------------------------
	23
	24	#------------------------------------------------------------------------------
	25	# UINT32
	26	# EFIAPI
	27	# AsmCpuidEx (
	28	# IN UINT32 RegisterInEax,
	29	# IN UINT32 RegisterInEcx,
	30	# OUT UINT32 *RegisterOutEax OPTIONAL,
	31	# OUT UINT32 *RegisterOutEbx OPTIONAL,
	32	# OUT UINT32 *RegisterOutEcx OPTIONAL,
	33	# OUT UINT32 *RegisterOutEdx OPTIONAL
	34	# )
	35	#------------------------------------------------------------------------------
	36	.global _AsmCpuidEx
	37	_AsmCpuidEx:
	38	push %rbx
	39	movl %ecx,%eax
	40	movl %edx,%ecx
	41	push %rax
	42	cpuid
	43	mov 0x38(%rsp), %r10
	44	test %r10, %r10
	45	jz L1
	46	mov %ecx,(%r10)
	47	L1:
	48	mov %r8, %rcx
	49	jrcxz L2
	50	movl %eax,(%rcx)
	51	L2:
	52	mov %r9, %rcx
	53	jrcxz L3
	54	mov %ebx, (%rcx)
	55	L3:
	56	mov 0x40(%rsp), %rcx
	57	jrcxz L4
	58	mov %edx, (%rcx)
	59	L4:
	60	pop %rax
	61	pop %rbx
	62	ret