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#
#
# Copyright (c) 1999 - 2014, 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 that 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:
#
# CpuIA32.c
#
#Abstract:
#
#--*/
##include "CpuIA32.h"
#include "EfiBind.h"
#---------------------------------------------------------------------------
.586p:
#.MODEL flat,C
.code:
#---------------------------------------------------------------------------
.globl ASM_PFX(EfiHalt)
.globl ASM_PFX(EfiWbinvd)
.globl ASM_PFX(EfiInvd)
.globl ASM_PFX(EfiCpuid)
.globl ASM_PFX(EfiReadMsr)
.globl ASM_PFX(EfiWriteMsr)
.globl ASM_PFX(EfiReadTsc)
.globl ASM_PFX(EfiDisableCache)
.globl ASM_PFX(EfiEnableCache)
.globl ASM_PFX(EfiGetEflags)
.globl ASM_PFX(EfiDisableInterrupts)
.globl ASM_PFX(EfiEnableInterrupts)
.globl ASM_PFX(EfiCpuidExt)
#VOID
#EfiHalt (
# VOID
#)
ASM_PFX(EfiHalt):
hlt
ret
#EfiHalt ENDP
#VOID
#EfiWbinvd (
# VOID
#)
ASM_PFX(EfiWbinvd):
wbinvd
ret
#EfiWbinvd ENDP
#VOID
#EfiInvd (
# VOID
#)
ASM_PFX(EfiInvd):
invd
ret
#EfiInvd ENDP
#VOID
#EfiCpuid (IN UINT32 RegisterInEax,
# OUT EFI_CPUID_REGISTER *Reg OPTIONAL)
ASM_PFX(EfiCpuid):
pushl %ebp
movl %esp, %ebp
pushl %ebx
pushl %esi
pushl %edi
pushal
movl 8(%ebp), %eax #RegisterInEax
cpuid
cmpl $0, 0xC(%ebp) # Reg
je L1
movl 0xC(%ebp), %edi # Reg
movl %eax, (%edi) # Reg->RegEax
movl %ebx, 4(%edi) # Reg->RegEbx
movl %ecx, 8(%edi) # Reg->RegEcx
movl %edx, 0xC(%edi) # Reg->RegEdx
L1:
popal
popl %edi
popl %esi
popl %ebx
popl %ebp
ret
#EfiCpuid ENDP
#UINT64
#EfiReadMsr (
# IN UINT32 Index
# );
ASM_PFX(EfiReadMsr):
movl 4(%esp), %ecx # Index
rdmsr
ret
#EfiReadMsr ENDP
#VOID
#EfiWriteMsr (
# IN UINT32 Index,
# IN UINT64 Value
# );
ASM_PFX(EfiWriteMsr):
movl 4(%esp), %ecx # Index
movl 8(%esp), %eax # DWORD PTR Value[0]
movl 0xC(%esp), %edx # DWORD PTR Value[4]
wrmsr
ret
#EfiWriteMsr ENDP
#UINT64
#EfiReadTsc (
# VOID
# )
ASM_PFX(EfiReadTsc):
rdtsc
ret
#EfiReadTsc ENDP
#VOID
#EfiDisableCache (
# VOID
#)
ASM_PFX(EfiDisableCache):
movl %cr0, %eax
bswapl %eax
andb $0x60, %al
cmpb $0x60, %al
je L2
movl %cr0, %eax
orl $0x60000000, %eax
movl %eax, %cr0
wbinvd
L2:
ret
#EfiDisableCache ENDP
#VOID
#EfiEnableCache (
# VOID
# )
ASM_PFX(EfiEnableCache):
wbinvd
movl %cr0, %eax
andl $0x9fffffff, %eax
movl %eax, %cr0
ret
#EfiEnableCache ENDP
#UINT32
#EfiGetEflags (
# VOID
# )
ASM_PFX(EfiGetEflags):
pushfl
popl %eax
ret
#EfiGetEflags ENDP
#VOID
#EfiDisableInterrupts (
# VOID
# )
ASM_PFX(EfiDisableInterrupts):
cli
ret
#EfiDisableInterrupts ENDP
#VOID
#EfiEnableInterrupts (
# VOID
# )
ASM_PFX(EfiEnableInterrupts):
sti
ret
#EfiEnableInterrupts ENDP
#VOID
#EfiCpuidExt (
# IN UINT32 RegisterInEax,
# IN UINT32 CacheLevel,
# OUT EFI_CPUID_REGISTER *Regs
# )
ASM_PFX(EfiCpuidExt):
push %ebx
push %edi
push %esi
pushal
movl 0x30(%esp), %eax # RegisterInEax
movl 0x34(%esp), %ecx # CacheLevel
cpuid
movl 0x38(%esp), %edi # DWORD PTR Regs
movl %eax, (%edi) # Reg->RegEax
movl %ebx, 4(%edi) # Reg->RegEbx
movl %ecx, 8(%edi) # Reg->RegEcx
movl %edx, 0xC(%edi) # Reg->RegEdx
popal
pop %esi
pop %edi
pop %ebx
ret
#EfiCpuidExt ENDP
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