diff options
| author | Liming Gao <liming.gao@intel.com> | 2018-06-04 13:35:58 +0800 |
|---|---|---|
| committer | Liming Gao <liming.gao@intel.com> | 2018-06-07 15:26:27 +0800 |
| commit | 6d614649abfb4fc80d303467bc1a30851e191fdd (patch) | |
| tree | 593f2ff08a633ce6c6208f82a307c01e08026884 /MdeModulePkg/Universal/DebugSupportDxe | |
| parent | 13688930ae9ad5101f10d28f650382058e449616 (diff) | |
| download | edk2-6d614649abfb4fc80d303467bc1a30851e191fdd.tar.gz edk2-6d614649abfb4fc80d303467bc1a30851e191fdd.tar.bz2 edk2-6d614649abfb4fc80d303467bc1a30851e191fdd.zip | |
MdeModulePkg: Remove X86 ASM and S files
NASM has replaced ASM and S files.
1. Remove ASM from all modules.
2. Remove S files from the drivers only.
3. https://bugzilla.tianocore.org/show_bug.cgi?id=881
After NASM is updated, S files can be removed from Library.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Diffstat (limited to 'MdeModulePkg/Universal/DebugSupportDxe')
5 files changed, 1 insertions, 2068 deletions
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf index 72a5dadb29..0d37f5fb64 100644 --- a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf +++ b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf @@ -6,7 +6,7 @@ # provides debug-agent to periodically gain control during operation of the machine to
# check for asynchronous commands form the host.
#
-# Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
@@ -42,8 +42,6 @@ Ia32/PlDebugSupport.h
Ia32/PlDebugSupportIa32.c
Ia32/AsmFuncs.nasm
- Ia32/AsmFuncs.S
- Ia32/AsmFuncs.asm
[Sources.X64]
Ia32/DebugSupport.h
@@ -51,8 +49,6 @@ X64/PlDebugSupport.h
X64/PlDebugSupportX64.c
X64/AsmFuncs.nasm
- X64/AsmFuncs.S
- X64/AsmFuncs.asm
[Sources.IPF]
Ipf/PlDebugSupport.h
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.S b/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.S deleted file mode 100644 index fd1a96b76f..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.S +++ /dev/null @@ -1,407 +0,0 @@ -#/**@file
-# Low leve IA32 specific debug support functions.
-#
-# Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
-# 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.
-#
-#**/
-
-ASM_GLOBAL ASM_PFX(OrigVector)
-ASM_GLOBAL ASM_PFX(InterruptEntryStub)
-ASM_GLOBAL ASM_PFX(StubSize)
-ASM_GLOBAL ASM_PFX(CommonIdtEntry)
-ASM_GLOBAL ASM_PFX(FxStorSupport)
-
-ASM_PFX(StubSize): .long ASM_PFX(InterruptEntryStubEnd) - ASM_PFX(InterruptEntryStub)
-ASM_PFX(AppEsp): .long 0x11111111 # ?
-ASM_PFX(DebugEsp): .long 0x22222222 # ?
-ASM_PFX(ExtraPush): .long 0x33333333 # ?
-ASM_PFX(ExceptData): .long 0x44444444 # ?
-ASM_PFX(Eflags): .long 0x55555555 # ?
-ASM_PFX(OrigVector): .long 0x66666666 # ?
-
-#------------------------------------------------------------------------------
-# BOOLEAN
-# FxStorSupport (
-# void
-# )
-#
-# Abstract: Returns TRUE if FxStor instructions are supported
-#
-ASM_GLOBAL ASM_PFX(FxStorSupport)
-ASM_PFX(FxStorSupport):
-#
-# cpuid corrupts ebx which must be preserved per the C calling convention
-#
- push %ebx
- mov $0x1,%eax
- cpuid
- mov %edx,%eax
- and $0x1000000,%eax
- shr $0x18,%eax
- pop %ebx
- ret
-#------------------------------------------------------------------------------
-# void
-# Vect2Desc (
-# DESCRIPTOR * DestDesc,
-# void (*Vector) (void)
-# )
-#
-# Abstract: Encodes an IDT descriptor with the given physical address
-#
-
-ASM_GLOBAL ASM_PFX(Vect2Desc)
-ASM_PFX(Vect2Desc):
- push %ebp
- mov %esp,%ebp
- mov 0xc(%ebp),%eax
- mov 0x8(%ebp),%ecx
- mov %ax,(%ecx)
- movw $0x20,0x2(%ecx)
- movw $0x8e00,0x4(%ecx)
- shr $0x10,%eax
- mov %ax,0x6(%ecx)
- leave
- ret
-
-ASM_GLOBAL ASM_PFX(InterruptEntryStub)
-ASM_PFX(InterruptEntryStub):
- mov %esp,0x0 # save stack top
- mov $0x0,%esp # switch to debugger stack
- push $0x0 # push vector number - will be modified before installed
- jmp ASM_PFX(CommonIdtEntry) # jump CommonIdtEntry
-ASM_GLOBAL ASM_PFX(InterruptEntryStubEnd)
-ASM_PFX(InterruptEntryStubEnd):
-
-#------------------------------------------------------------------------------
-# CommonIdtEntry
-#
-# Abstract: This code is not a function, but is the common part for all IDT
-# vectors.
-#
-ASM_GLOBAL ASM_PFX(CommonIdtEntry)
-ASM_PFX(CommonIdtEntry):
-##
-## At this point, the stub has saved the current application stack esp into AppEsp
-## and switched stacks to the debug stack, where it pushed the vector number
-##
-## The application stack looks like this:
-##
-## ...
-## (last application stack entry)
-## eflags from interrupted task
-## CS from interrupted task
-## EIP from interrupted task
-## Error code <-------------------- Only present for some exeption types
-##
-##
-
-
-## The stub switched us to the debug stack and pushed the interrupt number.
-##
-## Next, construct the context record. It will be build on the debug stack by
-## pushing the registers in the correct order so as to create the context structure
-## on the debug stack. The context record must be built from the end back to the
-## beginning because the stack grows down...
-#
-## For reference, the context record looks like this:
-##
-## typedef
-## struct {
-## UINT32 ExceptionData;
-## FX_SAVE_STATE_IA32 FxSaveState;
-## UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
-## UINT32 Cr0, Cr2, Cr3, Cr4;
-## UINT32 EFlags;
-## UINT32 Ldtr, Tr;
-## UINT32 Gdtr[2], Idtr[2];
-## UINT32 Eip;
-## UINT32 Gs, Fs, Es, Ds, Cs, Ss;
-## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
-## } SYSTEM_CONTEXT_IA32; // 32 bit system context record
-
-## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
- pusha
-## Save interrupt state eflags register...
- pushf
- pop %eax
-## We need to determine if any extra data was pushed by the exception, and if so, save it
-## To do this, we check the exception number pushed by the stub, and cache the
-## result in a variable since we'll need this again.
- mov %eax,0x0
- cmpl $0x8,0x0
- jne ASM_PFX(CommonIdtEntry+0x20)
- movl $0x1,0x0
- jmp ASM_PFX(CommonIdtEntry+0xa8)
- cmpl $0xa,0x0
- jne ASM_PFX(CommonIdtEntry+0x35)
- movl $0x1,0x0
- jmp ASM_PFX(CommonIdtEntry+0xa8)
- cmpl $0xb,0x0
- jne ASM_PFX(CommonIdtEntry+0x4a)
- movl $0x1,0x0
- jmp ASM_PFX(CommonIdtEntry+0xa8)
- cmpl $0xc,0x0
- jne ASM_PFX(CommonIdtEntry+0x5f)
- movl $0x1,0x0
- jmp ASM_PFX(CommonIdtEntry+0xa8)
- cmpl $0xd,0x0
- jne ASM_PFX(CommonIdtEntry+0x74)
- movl $0x1,0x0
- jmp ASM_PFX(CommonIdtEntry+0xa8)
- cmpl $0xe,0x0
- jne ASM_PFX(CommonIdtEntry+0x89)
- movl $0x1,0x0
- jmp ASM_PFX(CommonIdtEntry+0xa8)
- cmpl $0x11,0x0
- jne ASM_PFX(CommonIdtEntry+0x9e)
- movl $0x1,0x0
- jmp ASM_PFX(CommonIdtEntry+0xa8)
- movl $0x0,0x0
-## If there's some extra data, save it also, and modify the saved AppEsp to effectively
-## pop this value off the application's stack.
-
- cmpl $0x1,0x0
- jne ASM_PFX(CommonIdtEntry+0xc8)
- mov 0x0,%eax
- mov (%eax),%ebx
- mov %ebx,0x0
- add $0x4,%eax
- mov %eax,0x0
- jmp ASM_PFX(CommonIdtEntry+0xd2)
- movl $0x0,0x0
-## The "pushad" above pushed the debug stack esp. Since what we're actually doing
-## is building the context record on the debug stack, we need to save the pushed
-## debug ESP, and replace it with the application's last stack entry...
- mov 0xc(%esp),%eax
- mov %eax,0x0
- mov 0x0,%eax
- add $0xc,%eax
- # application stack has eflags, cs, & eip, so
- # last actual application stack entry is
- # 12 bytes into the application stack.
- mov %eax,0xc(%esp)
-## continue building context record
-## UINT32 Gs, Fs, Es, Ds, Cs, Ss; insure high 16 bits of each is zero
- mov %ss,%eax
- push %eax
-
- # CS from application is one entry back in application stack
- mov 0x0,%eax
- movzwl 0x4(%eax),%eax
- push %eax
- mov %ds,%eax
- push %eax
- mov %es,%eax
- push %eax
- mov %fs,%eax
- push %eax
- mov %gs,%eax
- push %eax
-
-## UINT32 Eip;
- # Eip from application is on top of application stack
- mov 0x0,%eax
- pushl (%eax)
-
-## UINT32 Gdtr[2], Idtr[2];
- push $0x0
- push $0x0
- sidtl (%esp)
- push $0x0
- push $0x0
- sgdtl (%esp)
-
-## UINT32 Ldtr, Tr;
- xor %eax,%eax
- str %eax
- push %eax
- sldt %eax
- push %eax
-
-## UINT32 EFlags;
-## Eflags from application is two entries back in application stack
- mov 0x0,%eax
- pushl 0x8(%eax)
-
-## UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;
-## insure FXSAVE/FXRSTOR is enabled in CR4...
-## ... while we're at it, make sure DE is also enabled...
- mov %cr4,%eax
- or $0x208,%eax
- mov %eax,%cr4
- push %eax
- mov %cr3,%eax
- push %eax
- mov %cr2,%eax
- push %eax
- push $0x0
- mov %cr0,%eax
- push %eax
-
-## UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- mov %db7,%eax
- push %eax
-
-## clear Dr7 while executing debugger itself
- xor %eax,%eax
- mov %eax,%db7
- mov %db6,%eax
- push %eax
-
-## insure all status bits in dr6 are clear...
- xor %eax,%eax
- mov %eax,%db6
- mov %db3,%eax
- push %eax
- mov %db2,%eax
- push %eax
- mov %db1,%eax
- push %eax
- mov %db0,%eax
- push %eax
-
-## FX_SAVE_STATE_IA32 FxSaveState;
- sub $0x200,%esp
- mov %esp,%edi
- # IMPORTANT!! The debug stack has been carefully constructed to
- # insure that esp and edi are 16 byte aligned when we get here.
- # They MUST be. If they are not, a GP fault will occur.
- fxsave (%edi)
-
-## UEFI calling convention for IA32 requires that Direction flag in EFLAGs is clear
- cld
-
-## UINT32 ExceptionData;
- mov 0x0,%eax
- push %eax
-
-# call to C code which will in turn call registered handler
-# pass in the vector number
- mov %esp,%eax
- push %eax
- mov 0x0,%eax
- push %eax
- call ASM_PFX(CommonIdtEntry+0x184)
- add $0x8,%esp
-
-# restore context...
-## UINT32 ExceptionData;
- add $0x4,%esp
-
-## FX_SAVE_STATE_IA32 FxSaveState;
- mov %esp,%esi
- fxrstor (%esi)
- add $0x200,%esp
-
-## UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- pop %eax
- mov %eax,%db0
- pop %eax
- mov %eax,%db1
- pop %eax
- mov %eax,%db2
- pop %eax
- mov %eax,%db3
-
-## skip restore of dr6. We cleared dr6 during the context save.
- add $0x4,%esp
- pop %eax
- mov %eax,%db7
-
-## UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;
- pop %eax
- mov %eax,%cr0
- add $0x4,%esp
- pop %eax
- mov %eax,%cr2
- pop %eax
- mov %eax,%cr3
- pop %eax
- mov %eax,%cr4
-
-## UINT32 EFlags;
- mov 0x0,%eax
- popl 0x8(%eax)
-
-## UINT32 Ldtr, Tr;
-## UINT32 Gdtr[2], Idtr[2];
-## Best not let anyone mess with these particular registers...
- add $0x18,%esp
-
-## UINT32 Eip;
- popl (%eax)
-
-## UINT32 SegGs, SegFs, SegEs, SegDs, SegCs, SegSs;
-## NOTE - modified segment registers could hang the debugger... We
-## could attempt to insulate ourselves against this possibility,
-## but that poses risks as well.
-##
-
- pop %gs
- pop %fs
- pop %es
- pop %ds
- popl 0x4(%eax)
- pop %ss
- mov 0xc(%esp),%ebx
-
-## The next stuff to restore is the general purpose registers that were pushed
-## using the "pushad" instruction.
-##
-## The value of ESP as stored in the context record is the application ESP
-## including the 3 entries on the application stack caused by the exception
-## itself. It may have been modified by the debug agent, so we need to
-## determine if we need to relocate the application stack.
-
- mov 0x0,%eax # move the potentially modified AppEsp into ebx
- add $0xc,%eax
- cmp %eax,%ebx
- je ASM_PFX(CommonIdtEntry+0x202)
- mov 0x0,%eax
- mov (%eax),%ecx # EIP
- mov %ecx,(%ebx)
- mov 0x4(%eax),%ecx # CS
- mov %ecx,0x4(%ebx)
- mov 0x8(%eax),%ecx # EFLAGS
- mov %ecx,0x8(%ebx)
-
- mov %ebx,%eax # modify the saved AppEsp to the new AppEsp
- mov %eax,0x0
- mov 0x0,%eax # restore the DebugEsp on the debug stack
- # so our "popad" will not cause a stack switch
- mov %eax,0xc(%esp)
- cmpl $0x68,0x0
- jne PhonyIretd+0xd
-## Restore eflags so when we chain, the flags will be exactly as if we were never here.
-## We gin up the stack to do an iretd so we can get ALL the flags.
- mov 0x0,%eax
- mov 0x8(%eax),%ebx
- and $0xfffffcff,%ebx # special handling for IF and TF
- push %ebx
- push %cs
- push $0x0
- iret
-
-PhonyIretd:
-## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
- popa
-
-## Switch back to application stack
- mov 0x0,%esp
- jmp *0x0
-## Jump to original handler
-## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
- popa
-## Switch back to application stack
- mov 0x0,%esp
-
-## We're outa here...
- iret
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.asm b/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.asm deleted file mode 100644 index 32cbc31654..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.asm +++ /dev/null @@ -1,509 +0,0 @@ -;/** @file
-; Low leve IA32 specific debug support functions.
-;
-; Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
-; 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.
-;
-;**/
-
-.586p
-.MODEL FLAT, C
-
-EXCPT32_DIVIDE_ERROR EQU 0
-EXCPT32_DEBUG EQU 1
-EXCPT32_NMI EQU 2
-EXCPT32_BREAKPOINT EQU 3
-EXCPT32_OVERFLOW EQU 4
-EXCPT32_BOUND EQU 5
-EXCPT32_INVALID_OPCODE EQU 6
-EXCPT32_DOUBLE_FAULT EQU 8
-EXCPT32_INVALID_TSS EQU 10
-EXCPT32_SEG_NOT_PRESENT EQU 11
-EXCPT32_STACK_FAULT EQU 12
-EXCPT32_GP_FAULT EQU 13
-EXCPT32_PAGE_FAULT EQU 14
-EXCPT32_FP_ERROR EQU 16
-EXCPT32_ALIGNMENT_CHECK EQU 17
-EXCPT32_MACHINE_CHECK EQU 18
-EXCPT32_SIMD EQU 19
-
-FXSTOR_FLAG EQU 01000000h ; bit cpuid 24 of feature flags
-
-;; The FXSTOR and FXRSTOR commands are used for saving and restoring the x87,
-;; MMX, SSE, SSE2, etc registers. The initialization of the debugsupport driver
-;; MUST check the CPUID feature flags to see that these instructions are available
-;; and fail to init if they are not.
-
-;; fxstor [edi]
-FXSTOR_EDI MACRO
- db 0fh, 0aeh, 00000111y ; mod = 00, reg/op = 000, r/m = 111 = [edi]
-ENDM
-
-;; fxrstor [esi]
-FXRSTOR_ESI MACRO
- db 0fh, 0aeh, 00001110y ; mod = 00, reg/op = 001, r/m = 110 = [esi]
-ENDM
-.DATA
-
-public OrigVector, InterruptEntryStub, StubSize, CommonIdtEntry, FxStorSupport
-
-StubSize dd InterruptEntryStubEnd - InterruptEntryStub
-AppEsp dd 11111111h ; ?
-DebugEsp dd 22222222h ; ?
-ExtraPush dd 33333333h ; ?
-ExceptData dd 44444444h ; ?
-Eflags dd 55555555h ; ?
-OrigVector dd 66666666h ; ?
-
-;; The declarations below define the memory region that will be used for the debug stack.
-;; The context record will be built by pushing register values onto this stack.
-;; It is imparitive that alignment be carefully managed, since the FXSTOR and
-;; FXRSTOR instructions will GP fault if their memory operand is not 16 byte aligned.
-;;
-;; The stub will switch stacks from the application stack to the debuger stack
-;; and pushes the exception number.
-;;
-;; Then we building the context record on the stack. Since the stack grows down,
-;; we push the fields of the context record from the back to the front. There
-;; are 132 bytes of stack used prior allocating the 512 bytes of stack to be
-;; used as the memory buffer for the fxstor instruction. Therefore address of
-;; the buffer used for the FXSTOR instruction is &Eax - 132 - 512, which
-;; must be 16 byte aligned.
-;;
-;; We carefully locate the stack to make this happen.
-;;
-;; For reference, the context structure looks like this:
-;; struct {
-;; UINT32 ExceptionData;
-;; FX_SAVE_STATE_IA32 FxSaveState; // 512 bytes, must be 16 byte aligned
-;; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
-;; UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;
-;; UINT32 EFlags;
-;; UINT32 Ldtr, Tr;
-;; UINT32 Gdtr[2], Idtr[2];
-;; UINT32 Eip;
-;; UINT32 Gs, Fs, Es, Ds, Cs, Ss;
-;; UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
-;; } SYSTEM_CONTEXT_IA32; // 32 bit system context record
-
-
-align 16
-DebugStackEnd db "DbgStkEnd >>>>>>" ;; 16 byte long string - must be 16 bytes to preserve alignment
- dd 1ffdh dup (000000000h) ;; 32K should be enough stack
- ;; This allocation is coocked to insure
- ;; that the the buffer for the FXSTORE instruction
- ;; will be 16 byte aligned also.
- ;;
-ExceptionNumber dd ? ;; first entry will be the vector number pushed by the stub
-
-DebugStackBegin db "<<<< DbgStkBegin" ;; initial debug ESP == DebugStackBegin, set in stub
-
-.CODE
-
-externdef InterruptDistrubutionHub:near
-
-;------------------------------------------------------------------------------
-; BOOLEAN
-; FxStorSupport (
-; void
-; )
-;
-; Abstract: Returns TRUE if FxStor instructions are supported
-;
-FxStorSupport PROC C PUBLIC
-
-;
-; cpuid corrupts ebx which must be preserved per the C calling convention
-;
- push ebx
- mov eax, 1
- cpuid
- mov eax, edx
- and eax, FXSTOR_FLAG
- shr eax, 24
- pop ebx
- ret
-FxStorSupport ENDP
-
-
-
-;------------------------------------------------------------------------------
-; void
-; Vect2Desc (
-; DESCRIPTOR * DestDesc,
-; void (*Vector) (void)
-; )
-;
-; Abstract: Encodes an IDT descriptor with the given physical address
-;
-Vect2Desc PROC C PUBLIC DestPtr:DWORD, Vector:DWORD
-
- mov eax, Vector
- mov ecx, DestPtr
- mov word ptr [ecx], ax ; write bits 15..0 of offset
- mov dx, cs
- mov word ptr [ecx+2], dx ; SYS_CODE_SEL from GDT
- mov word ptr [ecx+4], 0e00h OR 8000h ; type = 386 interrupt gate, present
- shr eax, 16
- mov word ptr [ecx+6], ax ; write bits 31..16 of offset
-
- ret
-
-Vect2Desc ENDP
-
-
-
-;------------------------------------------------------------------------------
-; InterruptEntryStub
-;
-; Abstract: This code is not a function, but is a small piece of code that is
-; copied and fixed up once for each IDT entry that is hooked.
-;
-InterruptEntryStub::
- mov AppEsp, esp ; save stack top
- mov esp, offset DebugStackBegin ; switch to debugger stack
- push 0 ; push vector number - will be modified before installed
- db 0e9h ; jump rel32
- dd 0 ; fixed up to relative address of CommonIdtEntry
-InterruptEntryStubEnd:
-
-
-
-;------------------------------------------------------------------------------
-; CommonIdtEntry
-;
-; Abstract: This code is not a function, but is the common part for all IDT
-; vectors.
-;
-CommonIdtEntry::
-;;
-;; At this point, the stub has saved the current application stack esp into AppEsp
-;; and switched stacks to the debug stack, where it pushed the vector number
-;;
-;; The application stack looks like this:
-;;
-;; ...
-;; (last application stack entry)
-;; eflags from interrupted task
-;; CS from interrupted task
-;; EIP from interrupted task
-;; Error code <-------------------- Only present for some exeption types
-;;
-;;
-
-
-;; The stub switched us to the debug stack and pushed the interrupt number.
-;;
-;; Next, construct the context record. It will be build on the debug stack by
-;; pushing the registers in the correct order so as to create the context structure
-;; on the debug stack. The context record must be built from the end back to the
-;; beginning because the stack grows down...
-;
-;; For reference, the context record looks like this:
-;;
-;; typedef
-;; struct {
-;; UINT32 ExceptionData;
-;; FX_SAVE_STATE_IA32 FxSaveState;
-;; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
-;; UINT32 Cr0, Cr2, Cr3, Cr4;
-;; UINT32 EFlags;
-;; UINT32 Ldtr, Tr;
-;; UINT32 Gdtr[2], Idtr[2];
-;; UINT32 Eip;
-;; UINT32 Gs, Fs, Es, Ds, Cs, Ss;
-;; UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
-;; } SYSTEM_CONTEXT_IA32; // 32 bit system context record
-
-;; UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
- pushad
-
-;; Save interrupt state eflags register...
- pushfd
- pop eax
- mov dword ptr Eflags, eax
-
-;; We need to determine if any extra data was pushed by the exception, and if so, save it
-;; To do this, we check the exception number pushed by the stub, and cache the
-;; result in a variable since we'll need this again.
- .IF ExceptionNumber == EXCPT32_DOUBLE_FAULT
- mov ExtraPush, 1
- .ELSEIF ExceptionNumber == EXCPT32_INVALID_TSS
- mov ExtraPush, 1
- .ELSEIF ExceptionNumber == EXCPT32_SEG_NOT_PRESENT
- mov ExtraPush, 1
- .ELSEIF ExceptionNumber == EXCPT32_STACK_FAULT
- mov ExtraPush, 1
- .ELSEIF ExceptionNumber == EXCPT32_GP_FAULT
- mov ExtraPush, 1
- .ELSEIF ExceptionNumber == EXCPT32_PAGE_FAULT
- mov ExtraPush, 1
- .ELSEIF ExceptionNumber == EXCPT32_ALIGNMENT_CHECK
- mov ExtraPush, 1
- .ELSE
- mov ExtraPush, 0
- .ENDIF
-
-;; If there's some extra data, save it also, and modify the saved AppEsp to effectively
-;; pop this value off the application's stack.
- .IF ExtraPush == 1
- mov eax, AppEsp
- mov ebx, [eax]
- mov ExceptData, ebx
- add eax, 4
- mov AppEsp, eax
- .ELSE
- mov ExceptData, 0
- .ENDIF
-
-;; The "pushad" above pushed the debug stack esp. Since what we're actually doing
-;; is building the context record on the debug stack, we need to save the pushed
-;; debug ESP, and replace it with the application's last stack entry...
- mov eax, [esp + 12]
- mov DebugEsp, eax
- mov eax, AppEsp
- add eax, 12
- ; application stack has eflags, cs, & eip, so
- ; last actual application stack entry is
- ; 12 bytes into the application stack.
- mov [esp + 12], eax
-
-;; continue building context record
-;; UINT32 Gs, Fs, Es, Ds, Cs, Ss; insure high 16 bits of each is zero
- mov eax, ss
- push eax
-
- ; CS from application is one entry back in application stack
- mov eax, AppEsp
- movzx eax, word ptr [eax + 4]
- push eax
-
- mov eax, ds
- push eax
- mov eax, es
- push eax
- mov eax, fs
- push eax
- mov eax, gs
- push eax
-
-;; UINT32 Eip;
- ; Eip from application is on top of application stack
- mov eax, AppEsp
- push dword ptr [eax]
-
-;; UINT32 Gdtr[2], Idtr[2];
- push 0
- push 0
- sidt fword ptr [esp]
- push 0
- push 0
- sgdt fword ptr [esp]
-
-;; UINT32 Ldtr, Tr;
- xor eax, eax
- str ax
- push eax
- sldt ax
- push eax
-
-;; UINT32 EFlags;
-;; Eflags from application is two entries back in application stack
- mov eax, AppEsp
- push dword ptr [eax + 8]
-
-;; UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;
-;; insure FXSAVE/FXRSTOR is enabled in CR4...
-;; ... while we're at it, make sure DE is also enabled...
- mov eax, cr4
- or eax, 208h
- mov cr4, eax
- push eax
- mov eax, cr3
- push eax
- mov eax, cr2
- push eax
- push 0
- mov eax, cr0
- push eax
-
-;; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- mov eax, dr7
- push eax
-;; clear Dr7 while executing debugger itself
- xor eax, eax
- mov dr7, eax
-
- mov eax, dr6
- push eax
-;; insure all status bits in dr6 are clear...
- xor eax, eax
- mov dr6, eax
-
- mov eax, dr3
- push eax
- mov eax, dr2
- push eax
- mov eax, dr1
- push eax
- mov eax, dr0
- push eax
-
-;; FX_SAVE_STATE_IA32 FxSaveState;
- sub esp, 512
- mov edi, esp
- ; IMPORTANT!! The debug stack has been carefully constructed to
- ; insure that esp and edi are 16 byte aligned when we get here.
- ; They MUST be. If they are not, a GP fault will occur.
- FXSTOR_EDI
-
-;; UEFI calling convention for IA32 requires that Direction flag in EFLAGs is clear
- cld
-
-;; UINT32 ExceptionData;
- mov eax, ExceptData
- push eax
-
-; call to C code which will in turn call registered handler
-; pass in the vector number
- mov eax, esp
- push eax
- mov eax, ExceptionNumber
- push eax
- call InterruptDistrubutionHub
- add esp, 8
-
-; restore context...
-;; UINT32 ExceptionData;
- add esp, 4
-
-;; FX_SAVE_STATE_IA32 FxSaveState;
- mov esi, esp
- FXRSTOR_ESI
- add esp, 512
-
-;; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- pop eax
- mov dr0, eax
- pop eax
- mov dr1, eax
- pop eax
- mov dr2, eax
- pop eax
- mov dr3, eax
-;; skip restore of dr6. We cleared dr6 during the context save.
- add esp, 4
- pop eax
- mov dr7, eax
-
-;; UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;
- pop eax
- mov cr0, eax
- add esp, 4
- pop eax
- mov cr2, eax
- pop eax
- mov cr3, eax
- pop eax
- mov cr4, eax
-
-;; UINT32 EFlags;
- mov eax, AppEsp
- pop dword ptr [eax + 8]
-
-;; UINT32 Ldtr, Tr;
-;; UINT32 Gdtr[2], Idtr[2];
-;; Best not let anyone mess with these particular registers...
- add esp, 24
-
-;; UINT32 Eip;
- pop dword ptr [eax]
-
-;; UINT32 SegGs, SegFs, SegEs, SegDs, SegCs, SegSs;
-;; NOTE - modified segment registers could hang the debugger... We
-;; could attempt to insulate ourselves against this possibility,
-;; but that poses risks as well.
-;;
-
- pop gs
- pop fs
- pop es
- pop ds
- pop [eax + 4]
- pop ss
-
-;; The next stuff to restore is the general purpose registers that were pushed
-;; using the "pushad" instruction.
-;;
-;; The value of ESP as stored in the context record is the application ESP
-;; including the 3 entries on the application stack caused by the exception
-;; itself. It may have been modified by the debug agent, so we need to
-;; determine if we need to relocate the application stack.
-
- mov ebx, [esp + 12] ; move the potentially modified AppEsp into ebx
- mov eax, AppEsp
- add eax, 12
- cmp ebx, eax
- je NoAppStackMove
-
- mov eax, AppEsp
- mov ecx, [eax] ; EIP
- mov [ebx], ecx
-
- mov ecx, [eax + 4] ; CS
- mov [ebx + 4], ecx
-
- mov ecx, [eax + 8] ; EFLAGS
- mov [ebx + 8], ecx
-
- mov eax, ebx ; modify the saved AppEsp to the new AppEsp
- mov AppEsp, eax
-NoAppStackMove:
- mov eax, DebugEsp ; restore the DebugEsp on the debug stack
- ; so our "popad" will not cause a stack switch
- mov [esp + 12], eax
-
- cmp ExceptionNumber, 068h
- jne NoChain
-
-Chain:
-
-;; Restore eflags so when we chain, the flags will be exactly as if we were never here.
-;; We gin up the stack to do an iretd so we can get ALL the flags.
- mov eax, AppEsp
- mov ebx, [eax + 8]
- and ebx, NOT 300h ; special handling for IF and TF
- push ebx
- push cs
- push PhonyIretd
- iretd
-PhonyIretd:
-
-;; UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
- popad
-
-;; Switch back to application stack
- mov esp, AppEsp
-
-;; Jump to original handler
- jmp OrigVector
-
-NoChain:
-;; UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
- popad
-
-;; Switch back to application stack
- mov esp, AppEsp
-
-;; We're outa here...
- iretd
-END
-
-
-
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S b/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S deleted file mode 100644 index fcc6838827..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S +++ /dev/null @@ -1,551 +0,0 @@ -///**@file
-// Low leve x64 specific debug support functions.
-//
-// Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
-// Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
-// 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.
-//
-//**/
-
-ASM_GLOBAL ASM_PFX(OrigVector)
-ASM_GLOBAL ASM_PFX(InterruptEntryStub)
-ASM_GLOBAL ASM_PFX(StubSize)
-ASM_GLOBAL ASM_PFX(CommonIdtEntry)
-ASM_GLOBAL ASM_PFX(FxStorSupport)
-
-.data
-
-ASM_PFX(StubSize): .long ASM_PFX(InterruptEntryStubEnd) - ASM_PFX(InterruptEntryStub)
-ASM_PFX(AppRsp): .long 0x11111111 # ?
- .long 0x11111111 # ?
-ASM_PFX(DebugRsp): .long 0x22222222 # ?
- .long 0x22222222 # ?
-ASM_PFX(ExtraPush): .long 0x33333333 # ?
- .long 0x33333333 # ?
-ASM_PFX(ExceptData): .long 0x44444444 # ?
- .long 0x44444444 # ?
-ASM_PFX(Rflags): .long 0x55555555 # ?
- .long 0x55555555 # ?
-ASM_PFX(OrigVector): .long 0x66666666 # ?
- .long 0x66666666 # ?
-
-// The declarations below define the memory region that will be used for the debug stack.
-// The context record will be built by pushing register values onto this stack.
-// It is imparitive that alignment be carefully managed, since the FXSTOR and
-// FXRSTOR instructions will GP fault if their memory operand is not 16 byte aligned.
-//
-// The stub will switch stacks from the application stack to the debuger stack
-// and pushes the exception number.
-//
-// Then we building the context record on the stack. Since the stack grows down,
-// we push the fields of the context record from the back to the front. There
-// are 336 bytes of stack used prior allocating the 512 bytes of stack to be
-// used as the memory buffer for the fxstor instruction. Therefore address of
-// the buffer used for the FXSTOR instruction is &Eax - 336 - 512, which
-// must be 16 byte aligned.
-//
-// We carefully locate the stack to make this happen.
-//
-// For reference, the context structure looks like this:
-// struct {
-// UINT64 ExceptionData;
-// FX_SAVE_STATE_X64 FxSaveState; // 512 bytes, must be 16 byte aligned
-// UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
-// UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
-// UINT64 RFlags;
-// UINT64 Ldtr, Tr;
-// UINT64 Gdtr[2], Idtr[2];
-// UINT64 Rip;
-// UINT64 Gs, Fs, Es, Ds, Cs, Ss;
-// UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-// UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
-// } SYSTEM_CONTEXT_X64; // 64 bit system context record
-
-.p2align 4
-DebugStackEnd : .ascii "DbgStkEnd >>>>>>" # 16 byte long string - must be 16 bytes to preserve alignment
- .fill 0x1ffc, 4, 0x00000000
- # 32K should be enough stack
- # This allocation is coocked to insure
- # that the the buffer for the FXSTORE instruction
- # will be 16 byte aligned also.
- #
-ASM_PFX(ExceptionNumber): .long 0x77777777 # first entry will be the vector number pushed by the stub
- .long 0x77777777 # ?
-
-DebugStackBegin : .ascii "<<<< DbgStkBegin" # initial debug ESP == DebugStackBegin, set in stub
-
-
-.text
-
-//------------------------------------------------------------------------------
-// BOOLEAN
-// FxStorSupport (
-// void
-// )
-//
-// Abstract: Returns TRUE if FxStor instructions are supported
-//
-ASM_GLOBAL ASM_PFX(FxStorSupport)
-ASM_PFX(FxStorSupport):
-//
-// cpuid corrupts rbx which must be preserved per the C calling convention
-//
- pushq %rbx
- movq $1, %rax
- cpuid
- movl %edx, %eax
- andq $0x01000000, %rax
- shrq $24, %rax
- popq %rbx
- ret
-//------------------------------------------------------------------------------
-// void
-// Vect2Desc (
-// IA32_IDT_GATE_DESCRIPTOR * DestDesc, // rcx
-// void (*Vector) (void) // rdx
-// )
-//
-// Abstract: Encodes an IDT descriptor with the given physical address
-//
-ASM_GLOBAL ASM_PFX(Vect2Desc)
-ASM_PFX(Vect2Desc):
- movq %rdx, %rax
- movw %ax, (%rcx) # write bits 15..0 of offset
- movw %cs, %dx
- movw %dx, 2(%rcx) # SYS_CODE_SEL from GDT
- movw $(0x0e00 | 0x8000), 4(%rcx) # type = 386 interrupt gate, present
- shrq $16, %rax
- movw %ax, 6(%rcx) # write bits 31..16 of offset
- shrq $16, %rax
- movl %eax, 8(%rcx) # write bits 63..32 of offset
-
- ret
-
-//------------------------------------------------------------------------------
-// InterruptEntryStub
-//
-// Abstract: This code is not a function, but is a small piece of code that is
-// copied and fixed up once for each IDT entry that is hooked.
-//
-ASM_GLOBAL ASM_PFX(InterruptEntryStub)
-ASM_PFX(InterruptEntryStub):
-
- pushq $0 # push vector number - will be modified before installed
- jmp ASM_PFX(CommonIdtEntry)
-
-ASM_GLOBAL ASM_PFX(InterruptEntryStubEnd)
-ASM_PFX(InterruptEntryStubEnd):
-
-//------------------------------------------------------------------------------
-// CommonIdtEntry
-//
-// Abstract: This code is not a function, but is the common part for all IDT
-// vectors.
-//
-ASM_GLOBAL ASM_PFX(CommonIdtEntry)
-//
-// At this point, the stub has saved the current application stack esp into AppRsp
-// and switched stacks to the debug stack, where it pushed the vector number
-//
-// The application stack looks like this:
-//
-// ...
-// (last application stack entry)
-// [16 bytes alignment, do not care it]
-// SS from interrupted task
-// RSP from interrupted task
-// rflags from interrupted task
-// CS from interrupted task
-// RIP from interrupted task
-// Error code <-------------------- Only present for some exeption types
-//
-// Vector Number <----------------- pushed in our IDT Entry
-//
-
-
-// The stub switched us to the debug stack and pushed the interrupt number.
-//
-// Next, construct the context record. It will be build on the debug stack by
-// pushing the registers in the correct order so as to create the context structure
-// on the debug stack. The context record must be built from the end back to the
-// beginning because the stack grows down...
-//
-// For reference, the context record looks like this:
-//
-// typedef
-// struct {
-// UINT64 ExceptionData;
-// FX_SAVE_STATE_X64 FxSaveState;
-// UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
-// UINT64 Cr0, Cr2, Cr3, Cr4, Cr8;
-// UINT64 RFlags;
-// UINT64 Ldtr, Tr;
-// UINT64 Gdtr[2], Idtr[2];
-// UINT64 Rip;
-// UINT64 Gs, Fs, Es, Ds, Cs, Ss;
-// UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-// UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
-// } SYSTEM_CONTEXT_X64; // 64
-ASM_PFX(CommonIdtEntry):
-// NOTE: we save rsp here to prevent compiler put rip reference cause error AppRsp
- pushq %rax
- movq (8)(%rsp), %rax # save vector number
- movq %rax, ASM_PFX(ExceptionNumber)(%rip) # save vector number
- popq %rax
- addq $8, %rsp # pop vector number
- movq %rsp, ASM_PFX(AppRsp)(%rip) # save stack top
- movq DebugStackBegin(%rip), %rsp # switch to debugger stack
- subq $8, %rsp # leave space for vector number
-// UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-// UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- pushq %r15
- pushq %r14
- pushq %r13
- pushq %r12
- pushq %r11
- pushq %r10
- pushq %r9
- pushq %r8
- pushq %rax
- pushq %rcx
- pushq %rdx
- pushq %rbx
- pushq %rsp
- pushq %rbp
- pushq %rsi
- pushq %rdi
-// Save interrupt state rflags register...
- pushfq
- popq %rax
- movq %rax, ASM_PFX(Rflags)(%rip)
-// We need to determine if any extra data was pushed by the exception, and if so, save it
-// To do this, we check the exception number pushed by the stub, and cache the
-// result in a variable since we'll need this again.
- cmpl $0, ASM_PFX(ExceptionNumber)(%rip)
- jz ExtraPushOne
- cmpl $10, ASM_PFX(ExceptionNumber)(%rip)
- jz ExtraPushOne
- cmpl $11, ASM_PFX(ExceptionNumber)(%rip)
- jz ExtraPushOne
- cmpl $12, ASM_PFX(ExceptionNumber)(%rip)
- jz ExtraPushOne
- cmpl $13, ASM_PFX(ExceptionNumber)(%rip)
- jz ExtraPushOne
- cmpl $14, ASM_PFX(ExceptionNumber)(%rip)
- jz ExtraPushOne
- cmpl $17, ASM_PFX(ExceptionNumber)(%rip)
- jz ExtraPushOne
- movl $0, ASM_PFX(ExtraPush)(%rip)
- movl $0, ASM_PFX(ExceptData)(%rip)
- jmp ExtraPushDone
-ExtraPushOne:
- movl $1, ASM_PFX(ExtraPush)(%rip)
-
-// If there's some extra data, save it also, and modify the saved AppRsp to effectively
-// pop this value off the application's stack.
- movq ASM_PFX(AppRsp)(%rip), %rax
- movq (%rax), %rbx
- movq %rbx, ASM_PFX(ExceptData)(%rip)
- addq $8, %rax
- movq %rax, ASM_PFX(AppRsp)(%rip)
-
-ExtraPushDone:
-
-// The "push" above pushed the debug stack rsp. Since what we're actually doing
-// is building the context record on the debug stack, we need to save the pushed
-// debug RSP, and replace it with the application's last stack entry...
- movq 24(%rsp), %rax
- movq %rax, ASM_PFX(DebugRsp)(%rip)
- movq ASM_PFX(AppRsp)(%rip), %rax
- movq 24(%rax), %rax
- # application stack has ss, rsp, rflags, cs, & rip, so
- # last actual application stack entry is saved at offset
- # 24 bytes from stack top.
- movq %rax, 24(%rsp)
-
-// continue building context record
-// UINT64 Gs, Fs, Es, Ds, Cs, Ss; insure high 16 bits of each is zero
- mov %ss, %rax
- pushq %rax
- # CS from application is one entry back in application stack
- movq ASM_PFX(AppRsp)(%rip), %rax
- movzwq 8(%rax), %rax
- pushq %rax
-
- mov %ds, %rax
- pushq %rax
- mov %es, %rax
- pushq %rax
- mov %fs, %rax
- pushq %rax
- mov %gs, %rax
- pushq %rax
-// UINT64 Rip;
- # Rip from application is on top of application stack
- movq ASM_PFX(AppRsp)(%rip), %rax
- pushq (%rax)
-// UINT64 Gdtr[2], Idtr[2];
- push $0
- push $0
- sidtq (%rsp)
- push $0
- push $0
- sgdtq (%rsp)
-
-// UINT64 Ldtr, Tr;
- xorq %rax, %rax
- str %ax
- pushq %rax
- sldt %ax
- pushq %rax
-
-// UINT64 RFlags;
-// Rflags from application is two entries back in application stack
- movq ASM_PFX(AppRsp)(%rip), %rax
- pushq 16(%rax)
-// UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
-// insure FXSAVE/FXRSTOR is enabled in CR4...
-// ... while we're at it, make sure DE is also enabled...
- movq %cr8, %rax
- pushq %rax
- movq %cr4, %rax
- orq $0x208, %rax
- movq %rax, %cr4
- pushq %rax
- movq %cr3, %rax
- pushq %rax
- movq %cr2, %rax
- pushq %rax
- push $0
- movq %cr0, %rax
- pushq %rax
-// UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- movq %dr7, %rax
- pushq %rax
-// clear Dr7 while executing debugger itself
- xorq %rax, %rax
- movq %rax, %dr7
-
- movq %dr6, %rax
- pushq %rax
-// insure all status bits in dr6 are clear...
- xorq %rax, %rax
- movq %rax, %dr6
-
- movq %dr3, %rax
- pushq %rax
- movq %dr2, %rax
- pushq %rax
- movq %dr1, %rax
- pushq %rax
- movq %dr0, %rax
- pushq %rax
-
-// FX_SAVE_STATE_X64 FxSaveState;
- subq $512, %rsp
- movq %rsp, %rdi
- # IMPORTANT!! The debug stack has been carefully constructed to
- # insure that rsp and rdi are 16 byte aligned when we get here.
- # They MUST be. If they are not, a GP fault will occur.
-
- # FXSTOR_RDI
- fxsave (%rdi)
-
-// UEFI calling convention for x64 requires that Direction flag in EFLAGs is clear
- cld
-
-// UINT64 ExceptionData;
- movq ASM_PFX(ExceptData)(%rip), %rax
- pushq %rax
-
-// call to C code which will in turn call registered handler
-// pass in the vector number
- movq %rsp, %rdx
- movq ASM_PFX(ExceptionNumber)(%rip), %rcx
- subq $40, %rsp
- call ASM_PFX(InterruptDistrubutionHub)
- addq $40, %rsp
-// restore context...
-// UINT64 ExceptionData;
- addq $8, %rsp
-
-// FX_SAVE_STATE_X64 FxSaveState;
- movq %rsp, %rsi
-
- # FXRSTOR_RSI
- fxrstor (%rsi)
-
- addq $512, %rsp
-
-// UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- popq %rax
- movq %rax, %dr0
- popq %rax
- movq %rax, %dr1
- popq %rax
- movq %rax, %dr2
- popq %rax
- movq %rax, %dr3
-
-// skip restore of dr6. We cleared dr6 during the context save.
- addq $8, %rsp
- popq %rax
- movq %rax, %dr7
-
-// UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
- popq %rax
- movq %rax, %cr0
- addq $8, %rsp
- popq %rax
- movq %rax, %cr2
- popq %rax
- movq %rax, %cr3
- popq %rax
- movq %rax, %cr4
- popq %rax
- movq %rax, %cr8
-// UINT64 RFlags;
- movq ASM_PFX(AppRsp)(%rip), %rax
- popq 16(%rax)
-// UINT64 Ldtr, Tr;
-// UINT64 Gdtr[2], Idtr[2];
-// Best not let anyone mess with these particular registers...
- addq $48, %rsp
-// UINT64 Rip;
- popq (%rax)
-
-// UINT64 Gs, Fs, Es, Ds, Cs, Ss;
-// NOTE - modified segment registers could hang the debugger... We
-// could attempt to insulate ourselves against this possibility,
-// but that poses risks as well.
-//
-
- popq %rax
- # mov %rax, %gs
- popq %rax
- # mov %rax, %fs
- popq %rax
- mov %rax, %es
- popq %rax
- mov %rax, %ds
- movq ASM_PFX(AppRsp)(%rip), %rax
- popq 8(%rax)
- popq %rax
- mov %rax, %ss
-## The next stuff to restore is the general purpose registers that were pushed
-## using the "push" instruction.
-##
-## The value of RSP as stored in the context record is the application RSP
-## including the 5 entries on the application stack caused by the exception
-## itself. It may have been modified by the debug agent, so we need to
-## determine if we need to relocate the application stack.
-
- movq 24(%rsp), %rbx # move the potentially modified AppRsp into rbx
- movq ASM_PFX(AppRsp)(%rip), %rax
- movq 24(%rax), %rax
- cmpq %rax, %rbx
- je NoAppStackMove
-
- movq ASM_PFX(AppRsp)(%rip), %rax
- movq (%rax), %rcx # RIP
- movq %rcx, (%rbx)
-
- movq 8(%rax), %rcx # CS
- movq %rcx, 8(%rbx)
-
- movq 16(%rax), %rcx # RFLAGS
- movq %rcx, 16(%rbx)
-
- movq 24(%rax), %rcx # RSP
- movq %rcx, 24(%rbx)
-
- movq 32(%rax), %rcx # SS
- movq %rcx, 32(%rbx)
-
- movq %rbx, %rax # modify the saved AppRsp to the new AppRsp
- movq %rax, ASM_PFX(AppRsp)(%rip)
-NoAppStackMove:
- movq ASM_PFX(DebugRsp)(%rip), %rax # restore the DebugRsp on the debug stack
- # so our "pop" will not cause a stack switch
- movq %rax, 24(%rsp)
-
- cmpl $0x068, ASM_PFX(ExceptionNumber)(%rip)
- jne NoChain
-
-Chain:
-
-// Restore rflags so when we chain, the flags will be exactly as if we were never here.
-// We gin up the stack to do an iretq so we can get ALL the flags.
- movq ASM_PFX(AppRsp)(%rip), %rax
- movq 40(%rax), %rbx
- pushq %rbx
- mov %ss, %rax
- pushq %rax
- movq %rsp, %rax
- addq $16, %rax
- pushq %rax
- movq ASM_PFX(AppRsp)(%rip), %rax
- movq 16(%rax), %rbx
- andq $0xfffffffffffffcff, %rbx # special handling for IF and TF
- pushq %rbx
- mov %cs, %rax
- pushq %rax
- movq PhonyIretq(%rip), %rax
- pushq %rax
- iretq
-PhonyIretq:
-
-// UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-// UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- popq %rdi
- popq %rsi
- popq %rbp
- popq %rsp
- popq %rbx
- popq %rdx
- popq %rcx
- popq %rax
- popq %r8
- popq %r9
- popq %r10
- popq %r11
- popq %r12
- popq %r13
- popq %r14
- popq %r15
-
-// Switch back to application stack
- movq ASM_PFX(AppRsp)(%rip), %rsp
-// Jump to original handler
- jmp ASM_PFX(OrigVector)
-NoChain:
-// UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-// UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- popq %rdi
- popq %rsi
- popq %rbp
- popq %rsp
- popq %rbx
- popq %rdx
- popq %rcx
- popq %rax
- popq %r8
- popq %r9
- popq %r10
- popq %r11
- popq %r12
- popq %r13
- popq %r14
- popq %r15
-
-// Switch back to application stack
- movq ASM_PFX(AppRsp)(%rip), %rsp
-
-// We're outa here...
- iret
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.asm b/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.asm deleted file mode 100644 index bce49ef762..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.asm +++ /dev/null @@ -1,596 +0,0 @@ -;/** @file
-; Low level x64 routines used by the debug support driver.
-;
-; Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
-; 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.
-;
-;**/
-
-EXCPT64_DIVIDE_ERROR EQU 0
-EXCPT64_DEBUG EQU 1
-EXCPT64_NMI EQU 2
-EXCPT64_BREAKPOINT EQU 3
-EXCPT64_OVERFLOW EQU 4
-EXCPT64_BOUND EQU 5
-EXCPT64_INVALID_OPCODE EQU 6
-EXCPT64_DOUBLE_FAULT EQU 8
-EXCPT64_INVALID_TSS EQU 10
-EXCPT64_SEG_NOT_PRESENT EQU 11
-EXCPT64_STACK_FAULT EQU 12
-EXCPT64_GP_FAULT EQU 13
-EXCPT64_PAGE_FAULT EQU 14
-EXCPT64_FP_ERROR EQU 16
-EXCPT64_ALIGNMENT_CHECK EQU 17
-EXCPT64_MACHINE_CHECK EQU 18
-EXCPT64_SIMD EQU 19
-
-FXSTOR_FLAG EQU 01000000h ; bit cpuid 24 of feature flags
-
-;; The FXSTOR and FXRSTOR commands are used for saving and restoring the x87,
-;; MMX, SSE, SSE2, etc registers. The initialization of the debugsupport driver
-;; MUST check the CPUID feature flags to see that these instructions are available
-;; and fail to init if they are not.
-
-;; fxstor [rdi]
-FXSTOR_RDI MACRO
- db 0fh, 0aeh, 00000111y ; mod = 00, reg/op = 000, r/m = 111 = [rdi]
-ENDM
-
-;; fxrstor [rsi]
-FXRSTOR_RSI MACRO
- db 0fh, 0aeh, 00001110y ; mod = 00, reg/op = 001, r/m = 110 = [rsi]
-ENDM
-
-data SEGMENT
-
-public OrigVector, InterruptEntryStub, StubSize, CommonIdtEntry, FxStorSupport
-
-StubSize dd InterruptEntryStubEnd - InterruptEntryStub
-AppRsp dq 1111111111111111h ; ?
-DebugRsp dq 2222222222222222h ; ?
-ExtraPush dq 3333333333333333h ; ?
-ExceptData dq 4444444444444444h ; ?
-Rflags dq 5555555555555555h ; ?
-OrigVector dq 6666666666666666h ; ?
-
-;; The declarations below define the memory region that will be used for the debug stack.
-;; The context record will be built by pushing register values onto this stack.
-;; It is imparitive that alignment be carefully managed, since the FXSTOR and
-;; FXRSTOR instructions will GP fault if their memory operand is not 16 byte aligned.
-;;
-;; The stub will switch stacks from the application stack to the debuger stack
-;; and pushes the exception number.
-;;
-;; Then we building the context record on the stack. Since the stack grows down,
-;; we push the fields of the context record from the back to the front. There
-;; are 336 bytes of stack used prior allocating the 512 bytes of stack to be
-;; used as the memory buffer for the fxstor instruction. Therefore address of
-;; the buffer used for the FXSTOR instruction is &Eax - 336 - 512, which
-;; must be 16 byte aligned.
-;;
-;; We carefully locate the stack to make this happen.
-;;
-;; For reference, the context structure looks like this:
-;; struct {
-;; UINT64 ExceptionData;
-;; FX_SAVE_STATE_X64 FxSaveState; // 512 bytes, must be 16 byte aligned
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
-;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
-;; UINT64 RFlags;
-;; UINT64 Ldtr, Tr;
-;; UINT64 Gdtr[2], Idtr[2];
-;; UINT64 Rip;
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
-;; } SYSTEM_CONTEXT_X64; // 64 bit system context record
-
-align 16
-DebugStackEnd db "DbgStkEnd >>>>>>" ;; 16 byte long string - must be 16 bytes to preserve alignment
- dd 1ffch dup (000000000h) ;; 32K should be enough stack
- ;; This allocation is coocked to insure
- ;; that the the buffer for the FXSTORE instruction
- ;; will be 16 byte aligned also.
- ;;
-ExceptionNumber dq ? ;; first entry will be the vector number pushed by the stub
-
-DebugStackBegin db "<<<< DbgStkBegin" ;; initial debug ESP == DebugStackBegin, set in stub
-
-data ENDS
-
-text SEGMENT
-
-externdef InterruptDistrubutionHub:near
-
-;------------------------------------------------------------------------------
-; BOOLEAN
-; FxStorSupport (
-; void
-; )
-;
-; Abstract: Returns TRUE if FxStor instructions are supported
-;
-FxStorSupport PROC PUBLIC
-
-;
-; cpuid corrupts rbx which must be preserved per the C calling convention
-;
- push rbx
- mov rax, 1
- cpuid
- mov eax, edx
- and rax, FXSTOR_FLAG
- shr rax, 24
- pop rbx
- ret
-FxStorSupport ENDP
-
-;------------------------------------------------------------------------------
-; void
-; Vect2Desc (
-; IA32_IDT_GATE_DESCRIPTOR * DestDesc, // rcx
-; void (*Vector) (void) // rdx
-; )
-;
-; Abstract: Encodes an IDT descriptor with the given physical address
-;
-Vect2Desc PROC PUBLIC
-
- mov rax, rdx
- mov word ptr [rcx], ax ; write bits 15..0 of offset
- mov dx, cs
- mov word ptr [rcx+2], dx ; SYS_CODE_SEL from GDT
- mov word ptr [rcx+4], 0e00h OR 8000h ; type = 386 interrupt gate, present
- shr rax, 16
- mov word ptr [rcx+6], ax ; write bits 31..16 of offset
- shr rax, 16
- mov dword ptr [rcx+8], eax ; write bits 63..32 of offset
-
- ret
-
-Vect2Desc ENDP
-
-
-
-;------------------------------------------------------------------------------
-; InterruptEntryStub
-;
-; Abstract: This code is not a function, but is a small piece of code that is
-; copied and fixed up once for each IDT entry that is hooked.
-;
-InterruptEntryStub::
- push 0 ; push vector number - will be modified before installed
- db 0e9h ; jump rel32
- dd 0 ; fixed up to relative address of CommonIdtEntry
-InterruptEntryStubEnd:
-
-
-
-;------------------------------------------------------------------------------
-; CommonIdtEntry
-;
-; Abstract: This code is not a function, but is the common part for all IDT
-; vectors.
-;
-CommonIdtEntry::
-;;
-;; At this point, the stub has saved the current application stack esp into AppRsp
-;; and switched stacks to the debug stack, where it pushed the vector number
-;;
-;; The application stack looks like this:
-;;
-;; ...
-;; (last application stack entry)
-;; [16 bytes alignment, do not care it]
-;; SS from interrupted task
-;; RSP from interrupted task
-;; rflags from interrupted task
-;; CS from interrupted task
-;; RIP from interrupted task
-;; Error code <-------------------- Only present for some exeption types
-;;
-;; Vector Number <----------------- pushed in our IDT Entry
-;;
-
-
-;; The stub switched us to the debug stack and pushed the interrupt number.
-;;
-;; Next, construct the context record. It will be build on the debug stack by
-;; pushing the registers in the correct order so as to create the context structure
-;; on the debug stack. The context record must be built from the end back to the
-;; beginning because the stack grows down...
-;
-;; For reference, the context record looks like this:
-;;
-;; typedef
-;; struct {
-;; UINT64 ExceptionData;
-;; FX_SAVE_STATE_X64 FxSaveState;
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
-;; UINT64 Cr0, Cr2, Cr3, Cr4, Cr8;
-;; UINT64 RFlags;
-;; UINT64 Ldtr, Tr;
-;; UINT64 Gdtr[2], Idtr[2];
-;; UINT64 Rip;
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
-;; } SYSTEM_CONTEXT_X64; // 64 bit system context record
-
-;; NOTE: we save rsp here to prevent compiler put rip reference cause error AppRsp
- push rax
- mov rax, qword ptr [rsp][8] ; save vector number
- mov ExceptionNumber, rax ; save vector number
- pop rax
- add rsp, 8 ; pop vector number
- mov AppRsp, rsp ; save stack top
- mov rsp, offset DebugStackBegin ; switch to debugger stack
- sub rsp, 8 ; leave space for vector number
-
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- push r15
- push r14
- push r13
- push r12
- push r11
- push r10
- push r9
- push r8
- push rax
- push rcx
- push rdx
- push rbx
- push rsp
- push rbp
- push rsi
- push rdi
-
-;; Save interrupt state rflags register...
- pushfq
- pop rax
- mov qword ptr Rflags, rax
-
-;; We need to determine if any extra data was pushed by the exception, and if so, save it
-;; To do this, we check the exception number pushed by the stub, and cache the
-;; result in a variable since we'll need this again.
- cmp ExceptionNumber, EXCPT64_DOUBLE_FAULT
- jz ExtraPushOne
- cmp ExceptionNumber, EXCPT64_INVALID_TSS
- jz ExtraPushOne
- cmp ExceptionNumber, EXCPT64_SEG_NOT_PRESENT
- jz ExtraPushOne
- cmp ExceptionNumber, EXCPT64_STACK_FAULT
- jz ExtraPushOne
- cmp ExceptionNumber, EXCPT64_GP_FAULT
- jz ExtraPushOne
- cmp ExceptionNumber, EXCPT64_PAGE_FAULT
- jz ExtraPushOne
- cmp ExceptionNumber, EXCPT64_ALIGNMENT_CHECK
- jz ExtraPushOne
- mov ExtraPush, 0
- mov ExceptData, 0
- jmp ExtraPushDone
-ExtraPushOne:
- mov ExtraPush, 1
-
-;; If there's some extra data, save it also, and modify the saved AppRsp to effectively
-;; pop this value off the application's stack.
- mov rax, AppRsp
- mov rbx, [rax]
- mov ExceptData, rbx
- add rax, 8
- mov AppRsp, rax
-
-ExtraPushDone:
-
-;; The "push" above pushed the debug stack rsp. Since what we're actually doing
-;; is building the context record on the debug stack, we need to save the pushed
-;; debug RSP, and replace it with the application's last stack entry...
- mov rax, [rsp + 24]
- mov DebugRsp, rax
- mov rax, AppRsp
- mov rax, QWORD PTR [rax + 24]
- ; application stack has ss, rsp, rflags, cs, & rip, so
- ; last actual application stack entry is saved at offset
- ; 24 bytes from stack top.
- mov [rsp + 24], rax
-
-;; continue building context record
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss; insure high 16 bits of each is zero
- mov rax, ss
- push rax
-
- ; CS from application is one entry back in application stack
- mov rax, AppRsp
- movzx rax, word ptr [rax + 8]
- push rax
-
- mov rax, ds
- push rax
- mov rax, es
- push rax
- mov rax, fs
- push rax
- mov rax, gs
- push rax
-
-;; UINT64 Rip;
- ; Rip from application is on top of application stack
- mov rax, AppRsp
- push qword ptr [rax]
-
-;; UINT64 Gdtr[2], Idtr[2];
- push 0
- push 0
- sidt fword ptr [rsp]
- push 0
- push 0
- sgdt fword ptr [rsp]
-
-;; UINT64 Ldtr, Tr;
- xor rax, rax
- str ax
- push rax
- sldt ax
- push rax
-
-;; UINT64 RFlags;
-;; Rflags from application is two entries back in application stack
- mov rax, AppRsp
- push qword ptr [rax + 16]
-
-;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
-;; insure FXSAVE/FXRSTOR is enabled in CR4...
-;; ... while we're at it, make sure DE is also enabled...
- mov rax, cr8
- push rax
- mov rax, cr4
- or rax, 208h
- mov cr4, rax
- push rax
- mov rax, cr3
- push rax
- mov rax, cr2
- push rax
- push 0
- mov rax, cr0
- push rax
-
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- mov rax, dr7
- push rax
-;; clear Dr7 while executing debugger itself
- xor rax, rax
- mov dr7, rax
-
- mov rax, dr6
- push rax
-;; insure all status bits in dr6 are clear...
- xor rax, rax
- mov dr6, rax
-
- mov rax, dr3
- push rax
- mov rax, dr2
- push rax
- mov rax, dr1
- push rax
- mov rax, dr0
- push rax
-
-;; FX_SAVE_STATE_X64 FxSaveState;
- sub rsp, 512
- mov rdi, rsp
- ; IMPORTANT!! The debug stack has been carefully constructed to
- ; insure that rsp and rdi are 16 byte aligned when we get here.
- ; They MUST be. If they are not, a GP fault will occur.
- FXSTOR_RDI
-
-;; UEFI calling convention for x64 requires that Direction flag in EFLAGs is clear
- cld
-
-;; UINT64 ExceptionData;
- mov rax, ExceptData
- push rax
-
-; call to C code which will in turn call registered handler
-; pass in the vector number
- mov rdx, rsp
- mov rcx, ExceptionNumber
- sub rsp, 40
- call InterruptDistrubutionHub
- add rsp, 40
-
-; restore context...
-;; UINT64 ExceptionData;
- add rsp, 8
-
-;; FX_SAVE_STATE_X64 FxSaveState;
- mov rsi, rsp
- FXRSTOR_RSI
- add rsp, 512
-
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- pop rax
- mov dr0, rax
- pop rax
- mov dr1, rax
- pop rax
- mov dr2, rax
- pop rax
- mov dr3, rax
-;; skip restore of dr6. We cleared dr6 during the context save.
- add rsp, 8
- pop rax
- mov dr7, rax
-
-;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
- pop rax
- mov cr0, rax
- add rsp, 8
- pop rax
- mov cr2, rax
- pop rax
- mov cr3, rax
- pop rax
- mov cr4, rax
- pop rax
- mov cr8, rax
-
-;; UINT64 RFlags;
- mov rax, AppRsp
- pop qword ptr [rax + 16]
-
-;; UINT64 Ldtr, Tr;
-;; UINT64 Gdtr[2], Idtr[2];
-;; Best not let anyone mess with these particular registers...
- add rsp, 48
-
-;; UINT64 Rip;
- pop qword ptr [rax]
-
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;
-;; NOTE - modified segment registers could hang the debugger... We
-;; could attempt to insulate ourselves against this possibility,
-;; but that poses risks as well.
-;;
-
- pop rax
- ; mov gs, rax
- pop rax
- ; mov fs, rax
- pop rax
- mov es, rax
- pop rax
- mov ds, rax
- mov rax, AppRsp
- pop qword ptr [rax + 8]
- pop rax
- mov ss, rax
-
-;; The next stuff to restore is the general purpose registers that were pushed
-;; using the "push" instruction.
-;;
-;; The value of RSP as stored in the context record is the application RSP
-;; including the 5 entries on the application stack caused by the exception
-;; itself. It may have been modified by the debug agent, so we need to
-;; determine if we need to relocate the application stack.
-
- mov rbx, [rsp + 24] ; move the potentially modified AppRsp into rbx
- mov rax, AppRsp
- mov rax, QWORD PTR [rax + 24]
- cmp rbx, rax
- je NoAppStackMove
-
- mov rax, AppRsp
- mov rcx, [rax] ; RIP
- mov [rbx], rcx
-
- mov rcx, [rax + 8] ; CS
- mov [rbx + 8], rcx
-
- mov rcx, [rax + 16] ; RFLAGS
- mov [rbx + 16], rcx
-
- mov rcx, [rax + 24] ; RSP
- mov [rbx + 24], rcx
-
- mov rcx, [rax + 32] ; SS
- mov [rbx + 32], rcx
-
- mov rax, rbx ; modify the saved AppRsp to the new AppRsp
- mov AppRsp, rax
-NoAppStackMove:
- mov rax, DebugRsp ; restore the DebugRsp on the debug stack
- ; so our "pop" will not cause a stack switch
- mov [rsp + 24], rax
-
- cmp ExceptionNumber, 068h
- jne NoChain
-
-Chain:
-
-;; Restore rflags so when we chain, the flags will be exactly as if we were never here.
-;; We gin up the stack to do an iretq so we can get ALL the flags.
- mov rax, AppRsp
- mov rbx, [rax + 40]
- push rbx
- mov rax, ss
- push rax
- mov rax, rsp
- add rax, 16
- push rax
- mov rax, AppRsp
- mov rbx, [rax + 16]
- and rbx, NOT 300h ; special handling for IF and TF
- push rbx
- mov rax, cs
- push rax
- mov rax, offset PhonyIretq
- push rax
- iretq
-PhonyIretq:
-
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- pop rdi
- pop rsi
- pop rbp
- pop rsp
- pop rbx
- pop rdx
- pop rcx
- pop rax
- pop r8
- pop r9
- pop r10
- pop r11
- pop r12
- pop r13
- pop r14
- pop r15
-
-;; Switch back to application stack
- mov rsp, AppRsp
-
-;; Jump to original handler
- jmp OrigVector
-
-NoChain:
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- pop rdi
- pop rsi
- pop rbp
- pop rsp
- pop rbx
- pop rdx
- pop rcx
- pop rax
- pop r8
- pop r9
- pop r10
- pop r11
- pop r12
- pop r13
- pop r14
- pop r15
-
-;; Switch back to application stack
- mov rsp, AppRsp
-
-;; We're outa here...
- iretq
-text ENDS
-
-END
-
-
-
|