diff options
| author | qhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-08-20 08:19:39 +0000 |
|---|---|---|
| committer | qhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-08-20 08:19:39 +0000 |
| commit | b341712e314a6161120c30d41e6308bc6aeb2213 (patch) | |
| tree | 4c3b6b6bd98ab567340b2ff1b690a058301e8594 /EdkCompatibilityPkg/Foundation/Library/Thunk16 | |
| parent | ec25b43fbdb33e26320a49cd1033125bd057c131 (diff) | |
| download | edk2-platforms-b341712e314a6161120c30d41e6308bc6aeb2213.tar.xz | |
Update to make end-of-line consistent for all source files in MdePkg. There are no other updates besides that change.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9160 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/Thunk16')
4 files changed, 485 insertions, 485 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Fx.S b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Fx.S index 111b56ea0d..2262646a5b 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Fx.S +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Fx.S @@ -1,54 +1,54 @@ -#***************************************************************************** -#* -#* 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: -#* -#* Fx.asm -#* -#* Abstract: -#* -#* AsmFxRestore and AsmFxSave function -#* -#include <EfiBind.h> -#------------------------------------------------------------------------------ - - .586P: - #.MODEL flat,C - .xmm: - .code: -#------------------------------------------------------------------------------ -.globl ASM_PFX(AsmFxSave) -.globl ASM_PFX(AsmFxRestore) -#------------------------------------------------------------------------------ -# VOID -# AsmFxSave ( -# OUT IA32_FX_BUFFER *Buffer -# ); -#------------------------------------------------------------------------------ -ASM_PFX(AsmFxSave): - movl 4(%esp), %eax - fxsave (%eax) - ret -#AsmFxSave ENDP - -#------------------------------------------------------------------------------ -# VOID -# AsmFxRestore ( -# IN CONST IA32_FX_BUFFER *Buffer -# ); -#------------------------------------------------------------------------------ -ASM_PFX(AsmFxRestore): - movl 4(%esp), %eax - fxrstor (%eax) - ret -#AsmFxRestore ENDP - - +#*****************************************************************************
+#*
+#* 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:
+#*
+#* Fx.asm
+#*
+#* Abstract:
+#*
+#* AsmFxRestore and AsmFxSave function
+#*
+#include <EfiBind.h>
+#------------------------------------------------------------------------------
+
+ .586P:
+ #.MODEL flat,C
+ .xmm:
+ .code:
+#------------------------------------------------------------------------------
+.globl ASM_PFX(AsmFxSave)
+.globl ASM_PFX(AsmFxRestore)
+#------------------------------------------------------------------------------
+# VOID
+# AsmFxSave (
+# OUT IA32_FX_BUFFER *Buffer
+# );
+#------------------------------------------------------------------------------
+ASM_PFX(AsmFxSave):
+ movl 4(%esp), %eax
+ fxsave (%eax)
+ ret
+#AsmFxSave ENDP
+
+#------------------------------------------------------------------------------
+# VOID
+# AsmFxRestore (
+# IN CONST IA32_FX_BUFFER *Buffer
+# );
+#------------------------------------------------------------------------------
+ASM_PFX(AsmFxRestore):
+ movl 4(%esp), %eax
+ fxrstor (%eax)
+ ret
+#AsmFxRestore ENDP
+
+
diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S index facbe46c93..0f3abbd789 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S @@ -1,183 +1,183 @@ -#***************************************************************************** -#* -#* Copyright (c) 2006 - 2007, 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: -#* -#* Thunk.asm -#* -#* Abstract: -#* -#* Real mode thunk -#* -#***************************************************************************** -#include <EfiBind.h> - - .686p: - -.globl ASM_PFX(mCode16Size) - -.data -mCode16Size: .long _TEXT16SIZE - -.data - -NullSegSel: .quad 0 -_16BitCsSel: - .word -1 - .word 0 - .byte 0 - .byte 0x9b - .byte 0x8f # 16-bit segment - .byte 0 -_16BitSsSel: - .word -1 - .word 0 - .byte 0 - .byte 0x93 - .byte 0x8f # 16-bit segment - .byte 0 - -_16Gdtr: - .word _16Gdtr - NullSegSel - 1 - .long NullSegSel - - -.text -.align 16 - - -ASM_PFX(Thunk16): - push %ebp - push %ebx - push %esi - push %edi - push %ds - push %es - push %fs - push %gs - mov 0x24(%esp),%esi - movzwl 0x32(%esi),%edx - mov 0xc(%esi),%edi - add $0xffffffb0,%edi - push %edi #; save stack offset - imul $0x10,%edx,%eax #; eax <- edx*16 - add %eax,%edi #; edi <- linear address of 16-bit stack - push $0xd - pop %ecx - rep movsl %ds:(%esi),%es:(%edi) #; copy context to 16-bit stack - pop %ebx #; ebx <- 16-bit stack offset - mov $L_Label1,%eax - stos %eax,%es:(%edi) - movl %cs,%eax - stos %ax,%es:(%edi) - mov 0x28(%esp),%eax - stos %ax,%es:(%edi) - mov %esp,%eax - stos %eax,%es:(%edi) - movl %ss,%eax - stos %ax,%es:(%edi) - sgdtl (%edi) - sidtl 0x24(%esp) - mov %cr0,%esi - mov %esi,0x6(%edi) #; save CR0 - and $0x7ffffffe,%esi #; esi <- CR0 to set - mov %cr4,%eax - mov %eax,0xa(%edi) #; save CR4 - and $0xcf,%al #; clear PAE & PSE - mov %edx,%edi #; edi <- 16-bit stack segment - mov 0x2c(%esp),%edx - shl $0x10,%edx - push %edx - pop %edx - mov $(_16BitSsSel - NullSegSel),%dx - lgdtl _16Gdtr #bugbug mismatch. - .byte 0xea - .long L_16Bit #bugbug mismatch. - .word _16BitCsSel - NullSegSel -L_16Bit: - .byte 0x66 - movw %dx,%ss - mov %esi,%cr0 - mov %eax,%cr4 - .byte 0x67 - .byte 0xff - .byte 0x6c - .byte 0x24 - .byte 0xfc - -L_Lable1: - movl %ss,%eax - shl $0x4,%eax - add %esp,%eax - lss 0x3c(%esp),%esp - lidtl 0x24(%esp) - pop %gs - pop %fs - pop %es - pop %ds - pop %edi - pop %esi - pop %ebx - pop %ebp - ret - -.code16 -_Code16Addr: -ASM_PFX(RealMode): - movw %di, %ss # set up stack - movl %ebx, %esp - lidt %cs:_16Idtr - _Code16Addr #lidt fword ptr cs:[_16Idtr - _Code16Addr] - .byte 0x66 - popaw - popw %ds - popw %es - popw %fs - popw %gs - addw $4, %sp # skip EFlags - testw $1, 14(%esp) #(_STK16 ptr [esp + 8]).ThunkFlags, 1 - jz 1f - pushf -1: - pushw %cs -# push @FarCallRet - _Code16Addr - .byte 0x68 # push /iw - .word FarCallRet - _Code16Addr - jz 2f - ljmp *6(%esp) #bugbug -2: - ljmp *4(%esp) #bugbug -FarCallRet: - pushfl - pushw %gs - pushw %fs - pushw %es - pushw %ds - pushal - cli - .byte 0x66 # sizeof (IA32_REGS) = 13 * 4 = 52 - lgdt 66(%esp) #lgdt (_STK16 ptr [esp + sizeof (IA32_REGS)]).SavedGdtr - mov 76(%esp), %eax - movl %eax, %cr4 - mov 72(%esp), %eax - movl %eax, %cr0 # restore CR0 - ljmpl *52(%esp) -#RealMode ENDP - -.text -_16Idtr: - .word 0x3ff #_16Idtr FWORD (1 SHL 10) - 1 - .byte 0x00 - -_TEXT16END: - -_TEXT16SIZE = _TEXT16END - _Code16Addr - - +#*****************************************************************************
+#*
+#* Copyright (c) 2006 - 2007, 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:
+#*
+#* Thunk.asm
+#*
+#* Abstract:
+#*
+#* Real mode thunk
+#*
+#*****************************************************************************
+#include <EfiBind.h>
+
+ .686p:
+
+.globl ASM_PFX(mCode16Size)
+
+.data
+mCode16Size: .long _TEXT16SIZE
+
+.data
+
+NullSegSel: .quad 0
+_16BitCsSel:
+ .word -1
+ .word 0
+ .byte 0
+ .byte 0x9b
+ .byte 0x8f # 16-bit segment
+ .byte 0
+_16BitSsSel:
+ .word -1
+ .word 0
+ .byte 0
+ .byte 0x93
+ .byte 0x8f # 16-bit segment
+ .byte 0
+
+_16Gdtr:
+ .word _16Gdtr - NullSegSel - 1
+ .long NullSegSel
+
+
+.text
+.align 16
+
+
+ASM_PFX(Thunk16):
+ push %ebp
+ push %ebx
+ push %esi
+ push %edi
+ push %ds
+ push %es
+ push %fs
+ push %gs
+ mov 0x24(%esp),%esi
+ movzwl 0x32(%esi),%edx
+ mov 0xc(%esi),%edi
+ add $0xffffffb0,%edi
+ push %edi #; save stack offset
+ imul $0x10,%edx,%eax #; eax <- edx*16
+ add %eax,%edi #; edi <- linear address of 16-bit stack
+ push $0xd
+ pop %ecx
+ rep movsl %ds:(%esi),%es:(%edi) #; copy context to 16-bit stack
+ pop %ebx #; ebx <- 16-bit stack offset
+ mov $L_Label1,%eax
+ stos %eax,%es:(%edi)
+ movl %cs,%eax
+ stos %ax,%es:(%edi)
+ mov 0x28(%esp),%eax
+ stos %ax,%es:(%edi)
+ mov %esp,%eax
+ stos %eax,%es:(%edi)
+ movl %ss,%eax
+ stos %ax,%es:(%edi)
+ sgdtl (%edi)
+ sidtl 0x24(%esp)
+ mov %cr0,%esi
+ mov %esi,0x6(%edi) #; save CR0
+ and $0x7ffffffe,%esi #; esi <- CR0 to set
+ mov %cr4,%eax
+ mov %eax,0xa(%edi) #; save CR4
+ and $0xcf,%al #; clear PAE & PSE
+ mov %edx,%edi #; edi <- 16-bit stack segment
+ mov 0x2c(%esp),%edx
+ shl $0x10,%edx
+ push %edx
+ pop %edx
+ mov $(_16BitSsSel - NullSegSel),%dx
+ lgdtl _16Gdtr #bugbug mismatch.
+ .byte 0xea
+ .long L_16Bit #bugbug mismatch.
+ .word _16BitCsSel - NullSegSel
+L_16Bit:
+ .byte 0x66
+ movw %dx,%ss
+ mov %esi,%cr0
+ mov %eax,%cr4
+ .byte 0x67
+ .byte 0xff
+ .byte 0x6c
+ .byte 0x24
+ .byte 0xfc
+
+L_Lable1:
+ movl %ss,%eax
+ shl $0x4,%eax
+ add %esp,%eax
+ lss 0x3c(%esp),%esp
+ lidtl 0x24(%esp)
+ pop %gs
+ pop %fs
+ pop %es
+ pop %ds
+ pop %edi
+ pop %esi
+ pop %ebx
+ pop %ebp
+ ret
+
+.code16
+_Code16Addr:
+ASM_PFX(RealMode):
+ movw %di, %ss # set up stack
+ movl %ebx, %esp
+ lidt %cs:_16Idtr - _Code16Addr #lidt fword ptr cs:[_16Idtr - _Code16Addr]
+ .byte 0x66
+ popaw
+ popw %ds
+ popw %es
+ popw %fs
+ popw %gs
+ addw $4, %sp # skip EFlags
+ testw $1, 14(%esp) #(_STK16 ptr [esp + 8]).ThunkFlags, 1
+ jz 1f
+ pushf
+1:
+ pushw %cs
+# push @FarCallRet - _Code16Addr
+ .byte 0x68 # push /iw
+ .word FarCallRet - _Code16Addr
+ jz 2f
+ ljmp *6(%esp) #bugbug
+2:
+ ljmp *4(%esp) #bugbug
+FarCallRet:
+ pushfl
+ pushw %gs
+ pushw %fs
+ pushw %es
+ pushw %ds
+ pushal
+ cli
+ .byte 0x66 # sizeof (IA32_REGS) = 13 * 4 = 52
+ lgdt 66(%esp) #lgdt (_STK16 ptr [esp + sizeof (IA32_REGS)]).SavedGdtr
+ mov 76(%esp), %eax
+ movl %eax, %cr4
+ mov 72(%esp), %eax
+ movl %eax, %cr0 # restore CR0
+ ljmpl *52(%esp)
+#RealMode ENDP
+
+.text
+_16Idtr:
+ .word 0x3ff #_16Idtr FWORD (1 SHL 10) - 1
+ .byte 0x00
+
+_TEXT16END:
+
+_TEXT16SIZE = _TEXT16END - _Code16Addr
+
+
diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Fx.S b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Fx.S index 7b15f41631..60ecdb7d25 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Fx.S +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Fx.S @@ -1,48 +1,48 @@ -#***************************************************************************** -#* -#* Copyright (c) 2008, 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: -#* -#* Fx.S -#* -#* Abstract: -#* -#* AsmFxRestore and AsmFxSave function -#* -#***************************************************************************** -#include <EfiBind.h> - -.global ASM_PFX(AsmFxSave) -.global ASM_PFX(AsmFxRestore) - - .text - -#------------------------------------------------------------------------------ -# VOID -# AsmFxSave ( -# OUT IA32_FX_BUFFER *Buffer -# ); -#------------------------------------------------------------------------------ -ASM_PFX(AsmFxSave): - fxsave (%rcx) - retq - -#------------------------------------------------------------------------------ -# VOID -# AsmFxRestore ( -# IN CONST IA32_FX_BUFFER *Buffer -# ); -#------------------------------------------------------------------------------ - -ASM_PFX(AsmFxRestore): - fxrstor (%rcx) - retq +#*****************************************************************************
+#*
+#* Copyright (c) 2008, 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:
+#*
+#* Fx.S
+#*
+#* Abstract:
+#*
+#* AsmFxRestore and AsmFxSave function
+#*
+#*****************************************************************************
+#include <EfiBind.h>
+
+.global ASM_PFX(AsmFxSave)
+.global ASM_PFX(AsmFxRestore)
+
+ .text
+
+#------------------------------------------------------------------------------
+# VOID
+# AsmFxSave (
+# OUT IA32_FX_BUFFER *Buffer
+# );
+#------------------------------------------------------------------------------
+ASM_PFX(AsmFxSave):
+ fxsave (%rcx)
+ retq
+
+#------------------------------------------------------------------------------
+# VOID
+# AsmFxRestore (
+# IN CONST IA32_FX_BUFFER *Buffer
+# );
+#------------------------------------------------------------------------------
+
+ASM_PFX(AsmFxRestore):
+ fxrstor (%rcx)
+ retq
\ No newline at end of file diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S index a8a94a4fa9..26709e61b0 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S @@ -1,56 +1,56 @@ -#***************************************************************************** -#* -#* Copyright (c) 2008, 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: -#* -#* Thunk.S -#* -#* Abstract: -#* -#* Real mode thunk -#* -#***************************************************************************** -#include <EfiBind.h> - - - - .data - -.globl ASM_PFX(mCode16Size) - -.data -mCode16Size: .long _Code16End - _Code16Addr - - -NullSegSel: .quad 0 -_16CsSegSel: - .word -1 - .word 0 - .byte 0 - .byte 0x9b - .byte 0x8f #16-bit segment - .byte 0 -_16DsSegSel: - .word -1 - .word 0 - .byte 0 - .byte 0x93 - .byte 0x8f #16-bit segment - .byte 0 - -_16Gdtr: - .word _16Gdtr - NullSegSel - 1 - .long NullSegSel - .code: - +#*****************************************************************************
+#*
+#* Copyright (c) 2008, 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:
+#*
+#* Thunk.S
+#*
+#* Abstract:
+#*
+#* Real mode thunk
+#*
+#*****************************************************************************
+#include <EfiBind.h>
+
+
+
+ .data
+
+.globl ASM_PFX(mCode16Size)
+
+.data
+mCode16Size: .long _Code16End - _Code16Addr
+
+
+NullSegSel: .quad 0
+_16CsSegSel:
+ .word -1
+ .word 0
+ .byte 0
+ .byte 0x9b
+ .byte 0x8f #16-bit segment
+ .byte 0
+_16DsSegSel:
+ .word -1
+ .word 0
+ .byte 0
+ .byte 0x93
+ .byte 0x8f #16-bit segment
+ .byte 0
+
+_16Gdtr:
+ .word _16Gdtr - NullSegSel - 1
+ .long NullSegSel
+ .code:
+
#IA32_REGS STRUC 4t
#_EDI DD ?
#_ESI DD ?
@@ -79,158 +79,158 @@ _16Gdtr: #SavedCr0 DD ?
#SavedCr4 DD ?
#_STK16 ENDS
- -ASM_PFX(Thunk16): - push %rbp - push %rbx - push %rsi - push %rdi - push %r12 - push %r13 - push %r14 - push %r15 - pushq %fs - pushq %gs - movl %ds,%r12d - movl %es,%r13d - movl %ss,%r14d - mov %rsp,%r15 - mov %rcx,%rsi - movzwq 0x36(%rsi),%r10 #movzx r10, (IA32_REGS ptr [rsi])._SS - xor %rdi,%rdi - mov 0xc(%rsi),%edi #mov edi, (IA32_REGS ptr [rsi])._ESP - add $0xffffffffffffffb0,%rdi #add rdi, - sizeof (IA32_REGS) - sizeof (_STK16) - push %rdi - imul $0x10,%r10,%rax - add %rax,%rdi - pushq $0xe #push sizeof (IA32_REGS) / 4 - pop %rcx - rep movsl %ds:(%rsi),%es:(%rdi) - pop %rbx #rbx <- 16-bit stack offset - lea Label,%eax #42 <_Thunk16+0x42> - stos %eax,%es:(%rdi) - movl %cs,%eax #return segment - stos %ax,%es:(%rdi) - mov %edx,%eax #THUNK Flags - stos %ax,%es:(%rdi) - sgdt 0x58(%rsp) #save GDTR - mov 0x58(%rsp),%rax - stos %rax,%es:(%rdi) - mov %cr0,%rax #save CR0 - mov %eax,%esi #esi <- CR0 to set - stos %eax,%es:(%rdi) - mov %cr4,%rax #save CR4 - stos %eax,%es:(%rdi) - sidt 0x58(%rsp) #save IDTR - and $0x7ffffffe,%esi #clear PE & PG bits - mov %r10,%rdi #rdi <- 16-bit stack segment - shl $0x10,%r8 - push %r8 #far jmp address - lea Label_16Bit,%eax - push %rax - movw $0x8,0x4(%rsp) - lgdt _16Gdtr #bugbug: may not match. - lret -Label_16Bit: - .byte 0x66 - movl $0xc0000080,%ecx - mov %rsi,%cr0 #disable PE & PG - rdmsr - and $0xfe,%ah - wrmsr #clear LME bit - mov %cr4,%rax - and $0xcf,%al #clear PAE & PSE - mov %rax,%cr4 - lret - -Label: - xor %rax,%rax - movl %ss,%eax - shl $0x4,%eax - add %esp,%eax - mov %r15,%rsp - lidt 0x58(%rsp) - movl %r12d,%ds - movl %r13d,%es - movl %r14d,%ss - popq %gs - popq %fs - pop %r15 - pop %r14 - pop %r13 - pop %r12 - pop %rdi - pop %rsi - pop %rbx - pop %rbp - retq - - - .align 0x10 - -_Code16Addr: -ASM_PFX(RealMode): - movl %edi,%ss - mov %bx,%sp #set up 16-bit stack - .byte 0x2e - .byte 0x0f - .byte 0x01 +
+ASM_PFX(Thunk16):
+ push %rbp
+ push %rbx
+ push %rsi
+ push %rdi
+ push %r12
+ push %r13
+ push %r14
+ push %r15
+ pushq %fs
+ pushq %gs
+ movl %ds,%r12d
+ movl %es,%r13d
+ movl %ss,%r14d
+ mov %rsp,%r15
+ mov %rcx,%rsi
+ movzwq 0x36(%rsi),%r10 #movzx r10, (IA32_REGS ptr [rsi])._SS
+ xor %rdi,%rdi
+ mov 0xc(%rsi),%edi #mov edi, (IA32_REGS ptr [rsi])._ESP
+ add $0xffffffffffffffb0,%rdi #add rdi, - sizeof (IA32_REGS) - sizeof (_STK16)
+ push %rdi
+ imul $0x10,%r10,%rax
+ add %rax,%rdi
+ pushq $0xe #push sizeof (IA32_REGS) / 4
+ pop %rcx
+ rep movsl %ds:(%rsi),%es:(%rdi)
+ pop %rbx #rbx <- 16-bit stack offset
+ lea Label,%eax #42 <_Thunk16+0x42>
+ stos %eax,%es:(%rdi)
+ movl %cs,%eax #return segment
+ stos %ax,%es:(%rdi)
+ mov %edx,%eax #THUNK Flags
+ stos %ax,%es:(%rdi)
+ sgdt 0x58(%rsp) #save GDTR
+ mov 0x58(%rsp),%rax
+ stos %rax,%es:(%rdi)
+ mov %cr0,%rax #save CR0
+ mov %eax,%esi #esi <- CR0 to set
+ stos %eax,%es:(%rdi)
+ mov %cr4,%rax #save CR4
+ stos %eax,%es:(%rdi)
+ sidt 0x58(%rsp) #save IDTR
+ and $0x7ffffffe,%esi #clear PE & PG bits
+ mov %r10,%rdi #rdi <- 16-bit stack segment
+ shl $0x10,%r8
+ push %r8 #far jmp address
+ lea Label_16Bit,%eax
+ push %rax
+ movw $0x8,0x4(%rsp)
+ lgdt _16Gdtr #bugbug: may not match.
+ lret
+Label_16Bit:
+ .byte 0x66
+ movl $0xc0000080,%ecx
+ mov %rsi,%cr0 #disable PE & PG
+ rdmsr
+ and $0xfe,%ah
+ wrmsr #clear LME bit
+ mov %cr4,%rax
+ and $0xcf,%al #clear PAE & PSE
+ mov %rax,%cr4
+ lret
+
+Label:
+ xor %rax,%rax
+ movl %ss,%eax
+ shl $0x4,%eax
+ add %esp,%eax
+ mov %r15,%rsp
+ lidt 0x58(%rsp)
+ movl %r12d,%ds
+ movl %r13d,%es
+ movl %r14d,%ss
+ popq %gs
+ popq %fs
+ pop %r15
+ pop %r14
+ pop %r13
+ pop %r12
+ pop %rdi
+ pop %rsi
+ pop %rbx
+ pop %rbp
+ retq
+
+
+ .align 0x10
+
+_Code16Addr:
+ASM_PFX(RealMode):
+ movl %edi,%ss
+ mov %bx,%sp #set up 16-bit stack
+ .byte 0x2e
+ .byte 0x0f
+ .byte 0x01
.byte 0x1e
.word _16Idtr - _Code16Addr #lidt _16Idtr
- .byte 0x66 + .byte 0x66
.byte 0x61 #popad
.byte 0x1f #pop ds
- .byte 0x07 #pop es + .byte 0x07 #pop es
popq %fs
popq %gs
add $0x8,%esp #skip RFLAGS
- .byte 0x67 #test [esp + 0eh], 1 - .byte 0xf7 - .byte 0x44 - .byte 0x24 - .byte 0x0e - .byte 0x01 - .byte 0x00 - jz 1f - pushfq #pushf, actually -1: - .byte 0x0e #push cs - .byte 0x68 #push /iw - .word FarCallRet - _Code16Addr - jz 2f - .byte 0x66 - ljmp *6(%esp) -2: - .byte 0x66 - ljmp *4(%esp) -FarCallRet: - .byte 0x66 - push $0x00 #push a dword of zero - .byte 0x66 - pushf #pushfd, actually - pushq %gs - pushq %fs - .byte 0x06 #push %es - .byte 0x1e #push %ds - .byte 0x66 - .byte 0x60 - cli - .byte 0x66 #sizeof (IA32_REGS) = 13 * 4 = 52 - lgdt 64(%esp) #lgdt (_STK16 ptr [esp + sizeof (IA32_REGS)]).SavedGdtr - .byte 0x66 - mov 76(%esp), %eax - mov %rax, %cr4 - .byte 0x66 - mov $0xc0000080, %ecx - rdmsr - orb $1, %ah - wrmsr - .byte 0x66 - mov 72(%esp), %eax - mov %rax, %cr0 #restore CR0 - .byte 0x66 - ljmpl *52(%esp) - -_16Idtr: - .word 0x3ff #FWORD (1 SHL 10) - 1 - .byte 0x00 + .byte 0x67 #test [esp + 0eh], 1
+ .byte 0xf7
+ .byte 0x44
+ .byte 0x24
+ .byte 0x0e
+ .byte 0x01
+ .byte 0x00
+ jz 1f
+ pushfq #pushf, actually
+1:
+ .byte 0x0e #push cs
+ .byte 0x68 #push /iw
+ .word FarCallRet - _Code16Addr
+ jz 2f
+ .byte 0x66
+ ljmp *6(%esp)
+2:
+ .byte 0x66
+ ljmp *4(%esp)
+FarCallRet:
+ .byte 0x66
+ push $0x00 #push a dword of zero
+ .byte 0x66
+ pushf #pushfd, actually
+ pushq %gs
+ pushq %fs
+ .byte 0x06 #push %es
+ .byte 0x1e #push %ds
+ .byte 0x66
+ .byte 0x60
+ cli
+ .byte 0x66 #sizeof (IA32_REGS) = 13 * 4 = 52
+ lgdt 64(%esp) #lgdt (_STK16 ptr [esp + sizeof (IA32_REGS)]).SavedGdtr
+ .byte 0x66
+ mov 76(%esp), %eax
+ mov %rax, %cr4
+ .byte 0x66
+ mov $0xc0000080, %ecx
+ rdmsr
+ orb $1, %ah
+ wrmsr
+ .byte 0x66
+ mov 72(%esp), %eax
+ mov %rax, %cr0 #restore CR0
+ .byte 0x66
+ ljmpl *52(%esp)
+
+_16Idtr:
+ .word 0x3ff #FWORD (1 SHL 10) - 1
+ .byte 0x00
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