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- #
- #
- # Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved
- #
- # SPDX-License-Identifier: BSD-2-Clause-Patent
- #
- #
- #
- #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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