mirror of https://github.com/acidanthera/audk.git
226 lines
4.5 KiB
ArmAsm
226 lines
4.5 KiB
ArmAsm
#/*++
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#
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#Copyright (c) 2006, Intel Corporation
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#All rights reserved. This program and the accompanying materials
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#are licensed and made available under the terms and conditions of the BSD License
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#which accompanies this distribution. The full text of the license may be found at
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#http://opensource.org/licenses/bsd-license.php
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#
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#THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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#WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#Module Name:
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#
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# CpuIA32.c
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#
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#Abstract:
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#
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#--*/
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##include "CpuIA32.h"
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#include "EfiBind.h"
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#---------------------------------------------------------------------------
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.586p:
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#.MODEL flat,C
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.code:
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#---------------------------------------------------------------------------
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.globl ASM_PFX(EfiHalt)
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.globl ASM_PFX(EfiWbinvd)
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.globl ASM_PFX(EfiInvd)
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.globl ASM_PFX(EfiCpuid)
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.globl ASM_PFX(EfiReadMsr)
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.globl ASM_PFX(EfiWriteMsr)
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.globl ASM_PFX(EfiReadTsc)
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.globl ASM_PFX(EfiDisableCache)
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.globl ASM_PFX(EfiEnableCache)
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.globl ASM_PFX(EfiGetEflags)
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.globl ASM_PFX(EfiDisableInterrupts)
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.globl ASM_PFX(EfiEnableInterrupts)
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.globl ASM_PFX(EfiCpuidExt)
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#VOID
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#EfiHalt (
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# VOID
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#)
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ASM_PFX(EfiHalt):
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hlt
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ret
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#EfiHalt ENDP
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#VOID
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#EfiWbinvd (
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# VOID
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#)
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ASM_PFX(EfiWbinvd):
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wbinvd
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ret
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#EfiWbinvd ENDP
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#VOID
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#EfiInvd (
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# VOID
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#)
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ASM_PFX(EfiInvd):
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invd
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ret
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#EfiInvd ENDP
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#VOID
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#EfiCpuid (IN UINT32 RegisterInEax,
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# OUT EFI_CPUID_REGISTER *Reg OPTIONAL)
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ASM_PFX(EfiCpuid):
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pushl %ebp
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movl %esp, %ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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pushal
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movl 8(%ebp), %eax #RegisterInEax
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cpuid
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cmpl $0, 0xC(%ebp) # Reg
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je L1
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movl 0xC(%ebp), %edi # Reg
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movl %eax, (%edi) # Reg->RegEax
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movl %ebx, 4(%edi) # Reg->RegEbx
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movl %ecx, 8(%edi) # Reg->RegEcx
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movl %edx, 0xC(%edi) # Reg->RegEdx
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L1:
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popal
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popl %edi
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popl %esi
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popl %ebx
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popl %ebp
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ret
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#EfiCpuid ENDP
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#UINT64
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#EfiReadMsr (
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# IN UINT32 Index
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# );
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ASM_PFX(EfiReadMsr):
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movl 4(%esp), %ecx # Index
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rdmsr
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ret
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#EfiReadMsr ENDP
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#VOID
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#EfiWriteMsr (
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# IN UINT32 Index,
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# IN UINT64 Value
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# );
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ASM_PFX(EfiWriteMsr):
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movl 4(%esp), %ecx # Index
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movl 8(%esp), %eax # DWORD PTR Value[0]
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movl 0xC(%esp), %edx # DWORD PTR Value[4]
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wrmsr
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ret
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#EfiWriteMsr ENDP
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#UINT64
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#EfiReadTsc (
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# VOID
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# )
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ASM_PFX(EfiReadTsc):
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rdtsc
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ret
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#EfiReadTsc ENDP
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#VOID
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#EfiDisableCache (
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# VOID
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#)
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ASM_PFX(EfiDisableCache):
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movl %cr0, %eax
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bswapl %eax
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andb $0x60, %al
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cmpb $0x60, %al
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je L2
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movl %cr0, %eax
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orl $0x60000000, %eax
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movl %eax, %cr0
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wbinvd
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L2:
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ret
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#EfiDisableCache ENDP
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#VOID
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#EfiEnableCache (
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# VOID
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# )
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ASM_PFX(EfiEnableCache):
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invd
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movl %cr0, %eax
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andl $0x9fffffff, %eax
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movl %eax, %cr0
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ret
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#EfiEnableCache ENDP
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#UINT32
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#EfiGetEflags (
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# VOID
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# )
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ASM_PFX(EfiGetEflags):
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pushfl
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popl %eax
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ret
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#EfiGetEflags ENDP
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#VOID
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#EfiDisableInterrupts (
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# VOID
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# )
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ASM_PFX(EfiDisableInterrupts):
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cli
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ret
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#EfiDisableInterrupts ENDP
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#VOID
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#EfiEnableInterrupts (
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# VOID
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# )
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ASM_PFX(EfiEnableInterrupts):
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sti
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ret
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#EfiEnableInterrupts ENDP
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#VOID
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#EfiCpuidExt (
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# IN UINT32 RegisterInEax,
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# IN UINT32 CacheLevel,
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# OUT EFI_CPUID_REGISTER *Regs
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# )
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ASM_PFX(EfiCpuidExt):
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push %ebx
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push %edi
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push %esi
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pushal
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movl 0x30(%esp), %eax # RegisterInEax
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movl 0x34(%esp), %ecx # CacheLevel
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cpuid
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movl 0x38(%esp), %edi # DWORD PTR Regs
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movl %eax, (%edi) # Reg->RegEax
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movl %ebx, 4(%edi) # Reg->RegEbx
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movl %ecx, 8(%edi) # Reg->RegEcx
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movl %edx, 0xC(%edi) # Reg->RegEdx
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popal
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pop %esi
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pop %edi
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pop %ebx
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ret
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#EfiCpuidExt ENDP
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