diff options
| author | Guo Mang <mang.guo@intel.com> | 2017-04-27 11:05:07 +0800 |
|---|---|---|
| committer | Guo Mang <mang.guo@intel.com> | 2017-04-27 11:05:07 +0800 |
| commit | c23f114d3cfbb29b8734b87213d1ec0de404197b (patch) | |
| tree | 4f3612573be055139a88213559212a40b7862fee /MdeModulePkg/Universal/DebugSupportDxe | |
| parent | 001e57a103fce87245bfb7ae9c32ffb499a64135 (diff) | |
| download | edk2-platforms-c23f114d3cfbb29b8734b87213d1ec0de404197b.tar.xz | |
MdeModulePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'MdeModulePkg/Universal/DebugSupportDxe')
21 files changed, 0 insertions, 6700 deletions
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c deleted file mode 100644 index 9a8f86de10..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c +++ /dev/null @@ -1,133 +0,0 @@ -/** @file
- Top level C file for debug support driver. Contains initialization function.
-
-Copyright (c) 2006 - 2009, 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.
-
-**/
-
-#include "PlDebugSupport.h"
-
-EFI_DEBUG_SUPPORT_PROTOCOL mDebugSupportProtocolInterface = {
- EFI_ISA,
- GetMaximumProcessorIndex,
- RegisterPeriodicCallback,
- RegisterExceptionCallback,
- InvalidateInstructionCache
-};
-
-
-/**
- Debug Support Driver entry point.
-
- Checks to see if there's not already a Debug Support protocol installed for
- the selected processor before installing it.
-
- @param[in] ImageHandle The firmware allocated handle for the EFI image.
- @param[in] SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS The entry point is executed successfully.
- @retval EFI_ALREADY_STARTED Debug Support protocol is installed already.
- @retval other Some error occurs when executing this entry point.
-
-**/
-EFI_STATUS
-EFIAPI
-InitializeDebugSupportDriver (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_LOADED_IMAGE_PROTOCOL *LoadedImageProtocolPtr;
- EFI_STATUS Status;
- EFI_HANDLE Handle;
- EFI_HANDLE *HandlePtr;
- UINTN NumHandles;
- EFI_DEBUG_SUPPORT_PROTOCOL *DebugSupportProtocolPtr;
-
- //
- // First check to see that the debug support protocol for this processor
- // type is not already installed
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiDebugSupportProtocolGuid,
- NULL,
- &NumHandles,
- &HandlePtr
- );
-
- if (Status != EFI_NOT_FOUND) {
- do {
- NumHandles--;
- Status = gBS->OpenProtocol (
- HandlePtr[NumHandles],
- &gEfiDebugSupportProtocolGuid,
- (VOID **) &DebugSupportProtocolPtr,
- ImageHandle,
- NULL,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- if ((Status == EFI_SUCCESS) && (DebugSupportProtocolPtr->Isa == EFI_ISA)) {
- //
- // a Debug Support protocol has been installed for this processor
- //
- FreePool (HandlePtr);
- Status = EFI_ALREADY_STARTED;
- goto ErrExit;
- }
- } while (NumHandles > 0);
- FreePool (HandlePtr);
- }
-
- //
- // Get our image information and install platform specific unload handler
- //
- Status = gBS->OpenProtocol (
- ImageHandle,
- &gEfiLoadedImageProtocolGuid,
- (VOID **) &LoadedImageProtocolPtr,
- ImageHandle,
- NULL,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- ASSERT (!EFI_ERROR (Status));
- if (Status != EFI_SUCCESS) {
- goto ErrExit;
- }
-
- LoadedImageProtocolPtr->Unload = PlUnloadDebugSupportDriver;
-
- //
- // Call hook for processor specific initialization
- //
- Status = PlInitializeDebugSupportDriver ();
- ASSERT (!EFI_ERROR (Status));
- if (Status != EFI_SUCCESS) {
- goto ErrExit;
- }
-
- //
- // Install Debug Support protocol to new handle
- //
- Handle = NULL;
- Status = gBS->InstallProtocolInterface (
- &Handle,
- &gEfiDebugSupportProtocolGuid,
- EFI_NATIVE_INTERFACE,
- &mDebugSupportProtocolInterface
- );
- ASSERT (!EFI_ERROR (Status));
- if (Status != EFI_SUCCESS) {
- goto ErrExit;
- }
-
-ErrExit:
- return Status;
-}
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf deleted file mode 100644 index 72a5dadb29..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf +++ /dev/null @@ -1,89 +0,0 @@ -## @file
-# This driver installs Debug Support protocol for the selected processor.
-#
-# This driver provides the capabilities for debug-agent to gain control of the machine
-# when certain types of events occur, i.e. breakpoint, processor execptions, etc. It also
-# 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>
-#
-# 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.
-#
-#
-##
-
-[Defines]
- INF_VERSION = 0x00010005
- BASE_NAME = DebugSupportDxe
- MODULE_UNI_FILE = DebugSupportDxe.uni
- FILE_GUID = 911D584C-35F7-4955-BEF9-B452769DDC3A
- MODULE_TYPE = DXE_DRIVER
- VERSION_STRING = 1.0
- ENTRY_POINT = InitializeDebugSupportDriver
-
-#
-# The following information is for reference only and not required by the build tools.
-#
-# VALID_ARCHITECTURES = IA32 X64 IPF
-#
-
-[Sources]
- DebugSupport.c
-
-[Sources.Ia32]
- Ia32/DebugSupport.h
- Ia32/PlDebugSupport.c
- Ia32/PlDebugSupport.h
- Ia32/PlDebugSupportIa32.c
- Ia32/AsmFuncs.nasm
- Ia32/AsmFuncs.S
- Ia32/AsmFuncs.asm
-
-[Sources.X64]
- Ia32/DebugSupport.h
- Ia32/PlDebugSupport.c
- X64/PlDebugSupport.h
- X64/PlDebugSupportX64.c
- X64/AsmFuncs.nasm
- X64/AsmFuncs.S
- X64/AsmFuncs.asm
-
-[Sources.IPF]
- Ipf/PlDebugSupport.h
- Ipf/PlDebugSupport.c
- Ipf/Ds64Macros.i
- Ipf/Common.i
- Ipf/AsmFuncs.s
-
-
-[Packages]
- MdePkg/MdePkg.dec
- MdeModulePkg/MdeModulePkg.dec
-
-
-[LibraryClasses]
- UefiBootServicesTableLib
- MemoryAllocationLib
- BaseMemoryLib
- UefiDriverEntryPoint
- DebugLib
-
-[LibraryClasses.IA32, LibraryClasses.X64]
- BaseLib
-
-[Protocols]
- gEfiLoadedImageProtocolGuid ## CONSUMES
- gEfiDebugSupportProtocolGuid ## PRODUCES
-
-
-[Depex]
- TRUE
-
-[UserExtensions.TianoCore."ExtraFiles"]
- DebugSupportDxeExtra.uni
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.uni b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.uni deleted file mode 100644 index e6bbf1e565..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.uni +++ /dev/null @@ -1,24 +0,0 @@ -// /** @file
-// This driver installs Debug Support protocol for the selected processor.
-//
-// This driver provides the capabilities for debug-agent to gain control of the machine
-// when certain types of events occur, i.e. breakpoint, processor execptions, etc. It also
-// provides debug-agent to periodically gain control during operation of the machine to
-// check for asynchronous commands form the host.
-//
-// Copyright (c) 2006 - 2014, 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.
-//
-// **/
-
-
-#string STR_MODULE_ABSTRACT #language en-US "Installs Debug Support protocol for the selected processor"
-
-#string STR_MODULE_DESCRIPTION #language en-US "This driver provides the capabilities for debug-agent to gain control of the machine when certain types of events occur, i.e. breakpoint, processor exceptions, etc. It also provides debug-agent to periodically gain control during operation of the machine to check for asynchronous commands from the host."
-
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxeExtra.uni b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxeExtra.uni deleted file mode 100644 index 9e92374696..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxeExtra.uni +++ /dev/null @@ -1,19 +0,0 @@ -// /** @file
-// DebugSupportDxe Localized Strings and Content
-//
-// Copyright (c) 2013 - 2014, 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.
-//
-// **/
-
-#string STR_PROPERTIES_MODULE_NAME
-#language en-US
-"Debug Support DXE Driver"
-
-
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/Ia32/AsmFuncs.nasm b/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.nasm deleted file mode 100644 index fc151c272b..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.nasm +++ /dev/null @@ -1,499 +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.
-;
-;**/
-
-%define EXCPT32_DIVIDE_ERROR 0
-%define EXCPT32_DEBUG 1
-%define EXCPT32_NMI 2
-%define EXCPT32_BREAKPOINT 3
-%define EXCPT32_OVERFLOW 4
-%define EXCPT32_BOUND 5
-%define EXCPT32_INVALID_OPCODE 6
-%define EXCPT32_DOUBLE_FAULT 8
-%define EXCPT32_INVALID_TSS 10
-%define EXCPT32_SEG_NOT_PRESENT 11
-%define EXCPT32_STACK_FAULT 12
-%define EXCPT32_GP_FAULT 13
-%define EXCPT32_PAGE_FAULT 14
-%define EXCPT32_FP_ERROR 16
-%define EXCPT32_ALIGNMENT_CHECK 17
-%define EXCPT32_MACHINE_CHECK 18
-%define EXCPT32_SIMD 19
-
-%define FXSTOR_FLAG 0x1000000 ; 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]
-%macro FXSTOR_EDI 0
- db 0xf, 0xae, 00000111y ; mod = 00, reg/op = 000, r/m = 111 = [edi]
-%endmacro
-
-;; fxrstor [esi]
-%macro FXRSTOR_ESI 0
- db 0xf, 0xae, 00001110y ; mod = 00, reg/op = 001, r/m = 110 = [esi]
-%endmacro
-SECTION .data
-
-global ASM_PFX(OrigVector)
-global ASM_PFX(InterruptEntryStub)
-global ASM_PFX(StubSize)
-global ASM_PFX(CommonIdtEntry)
-global ASM_PFX(FxStorSupport)
-extern ASM_PFX(InterruptDistrubutionHub)
-
-ASM_PFX(StubSize): dd InterruptEntryStubEnd - ASM_PFX(InterruptEntryStub)
-AppEsp: dd 0x11111111 ; ?
-DebugEsp: dd 0x22222222 ; ?
-ExtraPush: dd 0x33333333 ; ?
-ExceptData: dd 0x44444444 ; ?
-Eflags: dd 0x55555555 ; ?
-ASM_PFX(OrigVector): dd 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 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
- times 0x1ffc dd 0x0 ;; 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 0 ;; first entry will be the vector number pushed by the stub
-
-DebugStackBegin: db "<<<< DbgStkBegin" ;; initial debug ESP == DebugStackBegin, set in stub
-
-SECTION .text
-
-;------------------------------------------------------------------------------
-; BOOLEAN
-; FxStorSupport (
-; void
-; )
-;
-; Abstract: Returns TRUE if FxStor instructions are supported
-;
-global ASM_PFX(FxStorSupport)
-ASM_PFX(FxStorSupport):
-
-;
-; 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
-
-;------------------------------------------------------------------------------
-; void
-; Vect2Desc (
-; DESCRIPTOR * DestDesc,
-; void (*Vector) (void)
-; )
-;
-; Abstract: Encodes an IDT descriptor with the given physical address
-;
-global ASM_PFX(Vect2Desc)
-ASM_PFX(Vect2Desc):
- push ebp
- mov ebp, esp
- mov eax, [ebp + 0xC]
- mov ecx, [ebp + 0x8]
- mov word [ecx], ax ; write bits 15..0 of offset
- mov dx, cs
- mov word [ecx+2], dx ; SYS_CODE_SEL from GDT
- mov word [ecx+4], 0xe00 | 0x8000 ; type = 386 interrupt gate, present
- shr eax, 16
- mov word [ecx+6], ax ; write bits 31..16 of offset
- leave
- 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_PFX(InterruptEntryStub):
- mov [AppEsp], esp ; save stack top
- mov esp, DebugStackBegin ; switch to debugger stack
- push 0 ; push vector number - will be modified before installed
- db 0xe9 ; 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.
-;
-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;
- pushad
-
-;; Save interrupt state eflags register...
- pushfd
- pop eax
- mov [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.
- cmp dword [ExceptionNumber], EXCPT32_DOUBLE_FAULT
- jz ExtraPushOne
- cmp dword [ExceptionNumber], EXCPT32_INVALID_TSS
- jz ExtraPushOne
- cmp dword [ExceptionNumber], EXCPT32_SEG_NOT_PRESENT
- jz ExtraPushOne
- cmp dword [ExceptionNumber], EXCPT32_STACK_FAULT
- jz ExtraPushOne
- cmp dword [ExceptionNumber], EXCPT32_GP_FAULT
- jz ExtraPushOne
- cmp dword [ExceptionNumber], EXCPT32_PAGE_FAULT
- jz ExtraPushOne
- cmp dword [ExceptionNumber], EXCPT32_ALIGNMENT_CHECK
- jz ExtraPushOne
- mov dword [ExtraPush], 0
- mov dword [ExceptData], 0
- jmp ExtraPushDone
-
-ExtraPushOne:
- mov dword [ExtraPush], 1
-
-;; If there's some extra data, save it also, and modify the saved AppEsp to effectively
-;; pop this value off the application's stack.
- mov eax, [AppEsp]
- mov ebx, [eax]
- mov [ExceptData], ebx
- add eax, 4
- mov [AppEsp], eax
-
-ExtraPushDone:
-
-;; 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 [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 [eax]
-
-;; UINT32 Gdtr[2], Idtr[2];
- push 0
- push 0
- sidt [esp]
- push 0
- push 0
- sgdt [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 [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, 0x208
- 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 ASM_PFX(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 [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 [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 dword [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 dword [ExceptionNumber], 0x68
- 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, ~ 0x300 ; 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 [ASM_PFX(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
-
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/DebugSupport.h b/MdeModulePkg/Universal/DebugSupportDxe/Ia32/DebugSupport.h deleted file mode 100644 index 7f7d8e5ba6..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/DebugSupport.h +++ /dev/null @@ -1,298 +0,0 @@ -/** @file
- Generic debug support macros, typedefs and prototypes for IA32/x64.
-
-Copyright (c) 2006 - 2010, 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.
-
-**/
-
-#ifndef _DEBUG_SUPPORT_H_
-#define _DEBUG_SUPPORT_H_
-
-#include <Uefi.h>
-
-#include <Protocol/DebugSupport.h>
-#include <Protocol/LoadedImage.h>
-
-#include <Library/DebugLib.h>
-#include <Library/UefiDriverEntryPoint.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/BaseLib.h>
-
-#define NUM_IDT_ENTRIES 0x78
-#define SYSTEM_TIMER_VECTOR 0x68
-
-typedef
-VOID
-(*DEBUG_PROC) (
- VOID
- );
-
-typedef
-VOID
-(EFIAPI *CALLBACK_FUNC) (
- );
-
-typedef struct {
- IA32_IDT_GATE_DESCRIPTOR OrigDesc;
- DEBUG_PROC OrigVector;
- IA32_IDT_GATE_DESCRIPTOR NewDesc;
- DEBUG_PROC StubEntry;
- CALLBACK_FUNC RegisteredCallback;
-} IDT_ENTRY;
-
-extern UINT8 InterruptEntryStub[];
-extern UINT32 StubSize;
-extern VOID (*OrigVector) (VOID);
-extern IDT_ENTRY *IdtEntryTable;
-extern IA32_IDT_GATE_DESCRIPTOR NullDesc;
-
-/**
- Generic IDT entry.
-
-**/
-VOID
-CommonIdtEntry (
- VOID
- );
-
-/**
- Check whether FXSTOR is supported
-
- @retval TRUE FXSTOR is supported.
- @retval FALSE FXSTOR is not supported.
-
-**/
-BOOLEAN
-FxStorSupport (
- VOID
- );
-
-/**
- Encodes an IDT descriptor with the given physical address.
-
- @param DestDesc The IDT descriptor address.
- @param Vecotr The interrupt vector entry.
-
-**/
-VOID
-Vect2Desc (
- IA32_IDT_GATE_DESCRIPTOR * DestDesc,
- VOID (*Vector) (VOID)
- );
-
-/**
- Initializes driver's handler registration database.
-
- This code executes in boot services context
- Must be public because it's referenced from DebugSupport.c
-
- @retval EFI_UNSUPPORTED If IA32 processor does not support FXSTOR/FXRSTOR instructions,
- the context save will fail, so these processor's are not supported.
- @retval EFI_OUT_OF_RESOURCES Fails to allocate memory.
- @retval EFI_SUCCESS Initializes successfully.
-
-**/
-EFI_STATUS
-PlInitializeDebugSupportDriver (
- VOID
- );
-
-/**
- This is the callback that is written to the LoadedImage protocol instance
- on the image handle. It uninstalls all registered handlers and frees all entry
- stub memory.
-
- @param ImageHandle The firmware allocated handle for the EFI image.
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-EFIAPI
-PlUnloadDebugSupportDriver (
- IN EFI_HANDLE ImageHandle
- );
-
-/**
- Returns the maximum value that may be used for the ProcessorIndex parameter in
- RegisterPeriodicCallback() and RegisterExceptionCallback().
-
- Hard coded to support only 1 processor for now.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param MaxProcessorIndex Pointer to a caller-allocated UINTN in which the maximum supported
- processor index is returned. Always 0 returned.
-
- @retval EFI_SUCCESS Always returned with **MaxProcessorIndex set to 0.
-
-**/
-EFI_STATUS
-EFIAPI
-GetMaximumProcessorIndex (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- OUT UINTN *MaxProcessorIndex
- );
-
-/**
- Registers a function to be called back periodically in interrupt context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param PeriodicCallback A pointer to a function of type PERIODIC_CALLBACK that is the main
- periodic entry point of the debug agent.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterPeriodicCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_PERIODIC_CALLBACK PeriodicCallback
- );
-
-/**
- Registers a function to be called when a given processor exception occurs.
-
- This code executes in boot services context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param ExceptionCallback A pointer to a function of type EXCEPTION_CALLBACK that is called
- when the processor exception specified by ExceptionType occurs.
- @param ExceptionType Specifies which processor exception to hook.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterExceptionCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_EXCEPTION_CALLBACK ExceptionCallback,
- IN EFI_EXCEPTION_TYPE ExceptionType
- );
-
-/**
- Invalidates processor instruction cache for a memory range. Subsequent execution in this range
- causes a fresh memory fetch to retrieve code to be executed.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor's instruction cache is to be invalidated.
- @param Start Specifies the physical base of the memory range to be invalidated.
- @param Length Specifies the minimum number of bytes in the processor's instruction
- cache to invalidate.
-
- @retval EFI_SUCCESS Always returned.
-
-**/
-EFI_STATUS
-EFIAPI
-InvalidateInstructionCache (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN VOID *Start,
- IN UINT64 Length
- );
-
-/**
- Allocate pool for a new IDT entry stub.
-
- Copy the generic stub into the new buffer and fixup the vector number
- and jump target address.
-
- @param ExceptionType This is the exception type that the new stub will be created
- for.
- @param Stub On successful exit, *Stub contains the newly allocated entry stub.
-
-**/
-VOID
-CreateEntryStub (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- OUT VOID **Stub
- );
-
-/**
- Get Interrupt Handle from IDT Gate Descriptor.
-
- @param IdtGateDecriptor IDT Gate Descriptor.
-
- @return Interrupt Handle stored in IDT Gate Descriptor.
-
-**/
-UINTN
-GetInterruptHandleFromIdt (
- IN IA32_IDT_GATE_DESCRIPTOR *IdtGateDecriptor
- );
-
-/**
- This is the main worker function that manages the state of the interrupt
- handlers. It both installs and uninstalls interrupt handlers based on the
- value of NewCallback. If NewCallback is NULL, then uninstall is indicated.
- If NewCallback is non-NULL, then install is indicated.
-
- @param NewCallback If non-NULL, NewCallback specifies the new handler to register.
- If NULL, specifies that the previously registered handler should
- be uninstalled.
- @param ExceptionType Indicates which entry to manage.
-
- @retval EFI_SUCCESS Process is ok.
- @retval EFI_INVALID_PARAMETER Requested uninstalling a handler from a vector that has
- no handler registered for it
- @retval EFI_ALREADY_STARTED Requested install to a vector that already has a handler registered.
- @retval others Possible return values are passed through from UnHookEntry and HookEntry.
-
-**/
-EFI_STATUS
-ManageIdtEntryTable (
- CALLBACK_FUNC NewCallback,
- EFI_EXCEPTION_TYPE ExceptionType
- );
-
-/**
- Creates a nes entry stub. Then saves the current IDT entry and replaces it
- with an interrupt gate for the new entry point. The IdtEntryTable is updated
- with the new registered function.
-
- This code executes in boot services context. The stub entry executes in interrupt
- context.
-
- @param ExceptionType Specifies which vector to hook.
- @param NewCallback A pointer to the new function to be registered.
-
-**/
-VOID
-HookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN CALLBACK_FUNC NewCallback
- );
-
-/**
- Undoes HookEntry. This code executes in boot services context.
-
- @param ExceptionType Specifies which entry to unhook
-
-**/
-VOID
-UnhookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType
- );
-
-#endif
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupport.c b/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupport.c deleted file mode 100644 index f0c529a41b..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupport.c +++ /dev/null @@ -1,373 +0,0 @@ -/** @file
- IA32/x64 generic functions to support Debug Support protocol.
-
-Copyright (c) 2006 - 2010, 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.
-
-**/
-
-#include "DebugSupport.h"
-
-//
-// This the global main table to keep track of the interrupts
-//
-IDT_ENTRY *IdtEntryTable = NULL;
-
-/**
- Read IDT Gate Descriptor from IDT Table.
-
- @param Vector Specifies vector number.
- @param IdtGateDescriptor Pointer to IDT Gate Descriptor read from IDT Table.
-
-**/
-VOID
-ReadIdtGateDescriptor (
- IN EFI_EXCEPTION_TYPE Vector,
- OUT IA32_IDT_GATE_DESCRIPTOR *IdtGateDescriptor
- )
-{
- IA32_DESCRIPTOR IdtrValue;
- IA32_IDT_GATE_DESCRIPTOR *IdtTable;
-
- AsmReadIdtr (&IdtrValue);
- IdtTable = (IA32_IDT_GATE_DESCRIPTOR *) IdtrValue.Base;
-
- CopyMem ((VOID *) IdtGateDescriptor, (VOID *) &(IdtTable)[Vector], sizeof (IA32_IDT_GATE_DESCRIPTOR));
-}
-
-/**
- Write IDT Gate Descriptor into IDT Table.
-
- @param Vector Specifies vector number.
- @param IdtGateDescriptor Pointer to IDT Gate Descriptor written into IDT Table.
-
-**/
-VOID
-WriteIdtGateDescriptor (
- EFI_EXCEPTION_TYPE Vector,
- IA32_IDT_GATE_DESCRIPTOR *IdtGateDescriptor
- )
-{
- IA32_DESCRIPTOR IdtrValue;
- IA32_IDT_GATE_DESCRIPTOR *IdtTable;
-
- AsmReadIdtr (&IdtrValue);
- IdtTable = (IA32_IDT_GATE_DESCRIPTOR *) IdtrValue.Base;
-
- CopyMem ((VOID *) &(IdtTable)[Vector], (VOID *) IdtGateDescriptor, sizeof (IA32_IDT_GATE_DESCRIPTOR));
-}
-
-/**
- Creates a nes entry stub. Then saves the current IDT entry and replaces it
- with an interrupt gate for the new entry point. The IdtEntryTable is updated
- with the new registered function.
-
- This code executes in boot services context. The stub entry executes in interrupt
- context.
-
- @param ExceptionType Specifies which vector to hook.
- @param NewCallback A pointer to the new function to be registered.
-
-**/
-VOID
-HookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN CALLBACK_FUNC NewCallback
- )
-{
- BOOLEAN OldIntFlagState;
-
- CreateEntryStub (ExceptionType, (VOID **) &IdtEntryTable[ExceptionType].StubEntry);
-
- //
- // Disables CPU interrupts and returns the previous interrupt state
- //
- OldIntFlagState = SaveAndDisableInterrupts ();
-
- //
- // gets IDT Gate descriptor by index
- //
- ReadIdtGateDescriptor (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));
- //
- // stores orignal interrupt handle
- //
- IdtEntryTable[ExceptionType].OrigVector = (DEBUG_PROC) GetInterruptHandleFromIdt (&(IdtEntryTable[ExceptionType].OrigDesc));
-
- //
- // encodes new IDT Gate descriptor by stub entry
- //
- Vect2Desc (&IdtEntryTable[ExceptionType].NewDesc, IdtEntryTable[ExceptionType].StubEntry);
- //
- // stores NewCallback
- //
- IdtEntryTable[ExceptionType].RegisteredCallback = NewCallback;
-
- //
- // writes back new IDT Gate descriptor
- //
- WriteIdtGateDescriptor (ExceptionType, &(IdtEntryTable[ExceptionType].NewDesc));
-
- //
- // restore interrupt state
- //
- SetInterruptState (OldIntFlagState);
-
- return ;
-}
-
-/**
- Undoes HookEntry. This code executes in boot services context.
-
- @param ExceptionType Specifies which entry to unhook
-
-**/
-VOID
-UnhookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- BOOLEAN OldIntFlagState;
-
- //
- // Disables CPU interrupts and returns the previous interrupt state
- //
- OldIntFlagState = SaveAndDisableInterrupts ();
-
- //
- // restore the default IDT Date Descriptor
- //
- WriteIdtGateDescriptor (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));
-
- //
- // restore interrupt state
- //
- SetInterruptState (OldIntFlagState);
-
- return ;
-}
-
-/**
- Returns the maximum value that may be used for the ProcessorIndex parameter in
- RegisterPeriodicCallback() and RegisterExceptionCallback().
-
- Hard coded to support only 1 processor for now.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param MaxProcessorIndex Pointer to a caller-allocated UINTN in which the maximum supported
- processor index is returned. Always 0 returned.
-
- @retval EFI_SUCCESS Always returned with **MaxProcessorIndex set to 0.
-
-**/
-EFI_STATUS
-EFIAPI
-GetMaximumProcessorIndex (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- OUT UINTN *MaxProcessorIndex
- )
-{
- *MaxProcessorIndex = 0;
- return EFI_SUCCESS;
-}
-
-/**
- Registers a function to be called back periodically in interrupt context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param PeriodicCallback A pointer to a function of type PERIODIC_CALLBACK that is the main
- periodic entry point of the debug agent.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterPeriodicCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_PERIODIC_CALLBACK PeriodicCallback
- )
-{
- return ManageIdtEntryTable (PeriodicCallback, SYSTEM_TIMER_VECTOR);
-}
-
-/**
- Registers a function to be called when a given processor exception occurs.
-
- This code executes in boot services context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param ExceptionCallback A pointer to a function of type EXCEPTION_CALLBACK that is called
- when the processor exception specified by ExceptionType occurs.
- @param ExceptionType Specifies which processor exception to hook.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterExceptionCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_EXCEPTION_CALLBACK ExceptionCallback,
- IN EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- return ManageIdtEntryTable (ExceptionCallback, ExceptionType);
-}
-
-
-/**
- Invalidates processor instruction cache for a memory range. Subsequent execution in this range
- causes a fresh memory fetch to retrieve code to be executed.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor's instruction cache is to be invalidated.
- @param Start Specifies the physical base of the memory range to be invalidated.
- @param Length Specifies the minimum number of bytes in the processor's instruction
- cache to invalidate.
-
- @retval EFI_SUCCESS Always returned.
-
-**/
-EFI_STATUS
-EFIAPI
-InvalidateInstructionCache (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN VOID *Start,
- IN UINT64 Length
- )
-{
- AsmWbinvd ();
- return EFI_SUCCESS;
-}
-
-/**
- Common piece of code that invokes the registered handlers.
-
- This code executes in exception context so no efi calls are allowed.
- This code is called from assembly file.
-
- @param ExceptionType Exception type
- @param ContextRecord System context
-
-**/
-VOID
-InterruptDistrubutionHub (
- EFI_EXCEPTION_TYPE ExceptionType,
- EFI_SYSTEM_CONTEXT_IA32 *ContextRecord
- )
-{
- if (IdtEntryTable[ExceptionType].RegisteredCallback != NULL) {
- if (ExceptionType != SYSTEM_TIMER_VECTOR) {
- IdtEntryTable[ExceptionType].RegisteredCallback (ExceptionType, ContextRecord);
- } else {
- OrigVector = IdtEntryTable[ExceptionType].OrigVector;
- IdtEntryTable[ExceptionType].RegisteredCallback (ContextRecord);
- }
- }
-}
-
-/**
- This is the callback that is written to the Loaded Image protocol instance
- on the image handle. It uninstalls all registered handlers and frees all entry
- stub memory.
-
- @param ImageHandle The firmware allocated handle for the EFI image.
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-EFIAPI
-PlUnloadDebugSupportDriver (
- IN EFI_HANDLE ImageHandle
- )
-{
- EFI_EXCEPTION_TYPE ExceptionType;
-
- for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {
- ManageIdtEntryTable (NULL, ExceptionType);
- //
- // Free space for each Interrupt Stub precedure.
- //
- if (IdtEntryTable[ExceptionType].StubEntry != NULL) {
- FreePool ((VOID *)(UINTN)IdtEntryTable[ExceptionType].StubEntry);
- }
- }
-
- FreePool (IdtEntryTable);
-
- return EFI_SUCCESS;
-}
-
-/**
- Initializes driver's handler registration database.
-
- This code executes in boot services context.
- Must be public because it's referenced from DebugSupport.c
-
- @retval EFI_UNSUPPORTED If IA32/x64 processor does not support FXSTOR/FXRSTOR instructions,
- the context save will fail, so these processors are not supported.
- @retval EFI_OUT_OF_RESOURCES Fails to allocate memory.
- @retval EFI_SUCCESS Initializes successfully.
-
-**/
-EFI_STATUS
-PlInitializeDebugSupportDriver (
- VOID
- )
-{
- EFI_EXCEPTION_TYPE ExceptionType;
-
- //
- // Check whether FxStor instructions are supported.
- //
- if (!FxStorSupport ()) {
- return EFI_UNSUPPORTED;
- }
-
- IdtEntryTable = AllocateZeroPool (sizeof (IDT_ENTRY) * NUM_IDT_ENTRIES);
- if (IdtEntryTable == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType ++) {
- IdtEntryTable[ExceptionType].StubEntry = (DEBUG_PROC) (UINTN) AllocatePool (StubSize);
- if (IdtEntryTable[ExceptionType].StubEntry == NULL) {
- goto ErrorCleanup;
- }
-
- //
- // Copy Interrupt stub code.
- //
- CopyMem ((VOID *)(UINTN)IdtEntryTable[ExceptionType].StubEntry, InterruptEntryStub, StubSize);
- }
- return EFI_SUCCESS;
-
-ErrorCleanup:
-
- for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {
- if (IdtEntryTable[ExceptionType].StubEntry != NULL) {
- FreePool ((VOID *)(UINTN)IdtEntryTable[ExceptionType].StubEntry);
- }
- }
- FreePool (IdtEntryTable);
-
- return EFI_OUT_OF_RESOURCES;
-}
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupport.h b/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupport.h deleted file mode 100644 index 0a1577fab3..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupport.h +++ /dev/null @@ -1,22 +0,0 @@ -/** @file
- IA32 specific debug support macros, typedefs and prototypes.
-
-Copyright (c) 2006 - 2008, 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.
-
-**/
-
-#ifndef _PLDEBUG_SUPPORT_H_
-#define _PLDEBUG_SUPPORT_H_
-
-#include "Ia32/DebugSupport.h"
-
-#define EFI_ISA IsaIa32
-
-#endif
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupportIa32.c b/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupportIa32.c deleted file mode 100644 index 23222737f8..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ia32/PlDebugSupportIa32.c +++ /dev/null @@ -1,145 +0,0 @@ -/** @file
- IA32 specific functions to support Debug Support protocol.
-
-Copyright (c) 2008 - 2010, 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.
-
-**/
-
-#include "PlDebugSupport.h"
-
-IA32_IDT_GATE_DESCRIPTOR NullDesc = {{0}};
-
-/**
- Get Interrupt Handle from IDT Gate Descriptor.
-
- @param IdtGateDescriptor IDT Gate Descriptor.
-
- @return Interrupt Handle stored in IDT Gate Descriptor.
-
-**/
-UINTN
-GetInterruptHandleFromIdt (
- IN IA32_IDT_GATE_DESCRIPTOR *IdtGateDescriptor
- )
-{
- UINTN InterruptHandle;
-
- //
- // InterruptHandle 0-15 : OffsetLow
- // InterruptHandle 16-31 : OffsetHigh
- //
- ((UINT16 *) &InterruptHandle)[0] = (UINT16) IdtGateDescriptor->Bits.OffsetLow;
- ((UINT16 *) &InterruptHandle)[1] = (UINT16) IdtGateDescriptor->Bits.OffsetHigh;
-
- return InterruptHandle;
-}
-
-/**
- Allocate pool for a new IDT entry stub.
-
- Copy the generic stub into the new buffer and fixup the vector number
- and jump target address.
-
- @param ExceptionType This is the exception type that the new stub will be created
- for.
- @param Stub On successful exit, *Stub contains the newly allocated entry stub.
-
-**/
-VOID
-CreateEntryStub (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- OUT VOID **Stub
- )
-{
- UINT8 *StubCopy;
-
- StubCopy = *Stub;
-
- //
- // Fixup the stub code for this vector
- //
-
- // The stub code looks like this:
- //
- // 00000000 89 25 00000004 R mov AppEsp, esp ; save stack top
- // 00000006 BC 00008014 R mov esp, offset DbgStkBot ; switch to debugger stack
- // 0000000B 6A 00 push 0 ; push vector number - will be modified before installed
- // 0000000D E9 db 0e9h ; jump rel32
- // 0000000E 00000000 dd 0 ; fixed up to relative address of CommonIdtEntry
- //
-
- //
- // poke in the exception type so the second push pushes the exception type
- //
- StubCopy[0x0c] = (UINT8) ExceptionType;
-
- //
- // fixup the jump target to point to the common entry
- //
- *(UINT32 *) &StubCopy[0x0e] = (UINT32) CommonIdtEntry - (UINT32) &StubCopy[StubSize];
-
- return ;
-}
-
-/**
- This is the main worker function that manages the state of the interrupt
- handlers. It both installs and uninstalls interrupt handlers based on the
- value of NewCallback. If NewCallback is NULL, then uninstall is indicated.
- If NewCallback is non-NULL, then install is indicated.
-
- @param NewCallback If non-NULL, NewCallback specifies the new handler to register.
- If NULL, specifies that the previously registered handler should
- be uninstalled.
- @param ExceptionType Indicates which entry to manage.
-
- @retval EFI_SUCCESS Installing or Uninstalling operation is ok.
- @retval EFI_INVALID_PARAMETER Requested uninstalling a handler from a vector that has
- no handler registered for it
- @retval EFI_ALREADY_STARTED Requested install to a vector that already has a handler registered.
-
-**/
-EFI_STATUS
-ManageIdtEntryTable (
- CALLBACK_FUNC NewCallback,
- EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- EFI_STATUS Status;
-
- Status = EFI_SUCCESS;
-
- if (CompareMem (&IdtEntryTable[ExceptionType].NewDesc, &NullDesc, sizeof (IA32_IDT_GATE_DESCRIPTOR)) != 0) {
- //
- // we've already installed to this vector
- //
- if (NewCallback != NULL) {
- //
- // if the input handler is non-null, error
- //
- Status = EFI_ALREADY_STARTED;
- } else {
- UnhookEntry (ExceptionType);
- }
- } else {
- //
- // no user handler installed on this vector
- //
- if (NewCallback == NULL) {
- //
- // if the input handler is null, error
- //
- Status = EFI_INVALID_PARAMETER;
- } else {
- HookEntry (ExceptionType, NewCallback);
- }
- }
-
- return Status;
-}
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/AsmFuncs.s b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/AsmFuncs.s deleted file mode 100644 index db75fc088e..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/AsmFuncs.s +++ /dev/null @@ -1,1382 +0,0 @@ -/// @file
-/// Low level IPF routines used by the debug support driver
-///
-/// Copyright (c) 2006 - 2008, 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.
-///
-///
-
-
-#include "Common.i"
-#include "Ds64Macros.i"
-
-ASM_GLOBAL PatchSaveBuffer
-ASM_GLOBAL IpfContextBuf
-ASM_GLOBAL CommonHandler
-ASM_GLOBAL ExternalInterruptCount
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// InstructionCacheFlush
-//
-// Description:
-// Flushes instruction cache for specified number of bytes
-//
- ASM_GLOBAL InstructionCacheFlush
- .proc InstructionCacheFlush
- .align 32
-InstructionCacheFlush::
- { .mii
- alloc r3=2, 0, 0, 0
- cmp4.leu p0,p6=32, r33;;
- (p6) mov r33=32;;
- }
- { .mii
- nop.m 0
- zxt4 r29=r33;;
- dep.z r30=r29, 0, 5;;
- }
- { .mii
- cmp4.eq p0,p7=r0, r30
- shr.u r28=r29, 5;;
- (p7) adds r28=1, r28;;
- }
- { .mii
- nop.m 0
- shl r27=r28, 5;;
- zxt4 r26=r27;;
- }
- { .mfb
- add r31=r26, r32
- nop.f 0
- nop.b 0
- }
-LoopBack: // $L143:
- { .mii
- fc r32
- adds r32=32, r32;;
- cmp.ltu p14,p15=r32, r31
- }
- { .mfb
- nop.m 0
- nop.f 0
- //(p14) br.cond.dptk.few $L143#;;
- (p14) br.cond.dptk.few LoopBack;;
- }
- { .mmi
- sync.i;;
- srlz.i
- nop.i 0;;
- }
- { .mfb
- nop.m 0
- nop.f 0
- br.ret.sptk.few b0;;
- }
- .endp InstructionCacheFlush
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// ChainHandler
-//
-// Description:
-// Chains an interrupt handler
-//
-// The purpose of this function is to enable chaining of the external interrupt.
-// Since there's no clean SAL abstraction for doing this, we must do it
-// surreptitiously.
-//
-// The reserved IVT entry at offset 0x3400 is coopted for use by this handler.
-// According to Itanium architecture, it is reserved. Strictly speaking, this is
-// not safe, as we're cheating and violating the Itanium architecture. However,
-// as long as we're the only ones cheating, we should be OK. Without hooks in
-// the SAL to enable IVT management, there aren't many good options.
-//
-// The strategy is to replace the first bundle of the external interrupt handler
-// with our own that will branch into a piece of code we've supplied and located
-// in the reserved IVT entry. Only the first bundle of the external interrupt
-// IVT entry is modified.
-//
-// The original bundle is moved and relocated to space
-// allocated within the reserved IVT entry. The next bundle following is
-// is generated to go a hard coded branch back to the second bundle of the
-// external interrupt IVT entry just in case the first bundle had no branch.
-//
-// Our new code will execute our handler, and then fall through to the
-// original bundle after restoring all context appropriately.
-//
-// The following is a representation of what the IVT memory map looks like with
-// our chained handler installed:
-//
-//
-//
-//
-//
-// This IVT entry is Failsafe bundle
-// reserved by the
-// Itanium architecture Original bundle 0
-// and is used for
-// for locating our
-// handler and the
-// original bundle Patch code...
-// zero of the ext
-// interrupt handler
-//
-// RSVD (3400) Unused
-//
-//
-//
-//
-//
-//
-//
-//
-//
-//
-//
-//
-// EXT_INT (3000) Bundle 0 Bundle zero - This one is
-// modified, all other bundles
-// in the EXT_INT entry are
-// untouched.
-//
-//
-// Arguments:
-//
-// Returns:
-//
-// Notes:
-//
-//
- ASM_GLOBAL ChainHandler
- .proc ChainHandler
-ChainHandler:
-
- NESTED_SETUP( 0,2+3,3,0 )
-
- mov r8=1 // r8 = success
- mov r2=cr.iva;;
-//
-// NOTE: There's a potential hazard here in that we're simply stealing a bunch of
-// bundles (memory) from the IVT and assuming there's no catastrophic side effect.
-//
-// First, save IVT area we're taking over with the patch so we can restore it later
-//
- addl out0=PATCH_ENTRY_OFFSET, r2 // out0 = source buffer
- movl out1=PatchSaveBuffer // out1 = destination buffer
- mov out2=0x40;; // out2 = number of bundles to copy... save entire IDT entry
- br.call.sptk.few b0 = CopyBundles
-
-// Next, copy the patch code into the IVT
- movl out0=PatchCode // out0 = source buffer of patch code
- addl out1=PATCH_OFFSET, r2 // out1 = destination buffer - in IVT
- mov out2=PATCH_CODE_SIZE;;
- shr out2=out2, 4;; // out2 = number of bundles to copy
- br.call.sptk.few b0 = CopyBundles
-
-
-// copy original bundle 0 from the external interrupt handler to the
-// appropriate place in the reserved IVT interrupt slot
- addl out0=EXT_INT_ENTRY_OFFSET, r2 // out0 = source buffer
- addl out1=RELOCATED_EXT_INT, r2 // out1 = destination buffer - in reserved IVT
- mov out2=1;; // out2 = copy 1 bundle
- br.call.sptk.few b0 = CopyBundles
-
-// Now relocate it there because it very likely had a branch instruction that
-// that must now be fixed up.
- addl out0=RELOCATED_EXT_INT, r2 // out0 = new runtime address of bundle - in reserved IVT
- addl out1=EXT_INT_ENTRY_OFFSET, r2;;// out1 = IP address of previous location
- mov out2=out0;; // out2 = IP address of new location
- br.call.sptk.few b0 = RelocateBundle
-
-// Now copy into the failsafe branch into the next bundle just in case
-// the original ext int bundle 0 bundle did not contain a branch instruction
- movl out0=FailsafeBranch // out0 = source buffer
- addl out1=FAILSAFE_BRANCH_OFFSET, r2 // out1 = destination buffer - in reserved IVT
- mov out2=1;; // out2 = copy 1 bundle
- br.call.sptk.few b0 = CopyBundles
-
-// Last, copy in our replacement for the external interrupt IVT entry bundle 0
- movl out0=PatchCodeNewBun0 // out0 = source buffer - our replacement bundle 0
- addl out1=EXT_INT_ENTRY_OFFSET, r2 // out1 = destination buffer - bundle 0 of External interrupt entry
- mov out2=1;; // out2 = copy 1 bundle
- br.call.sptk.few b0 = CopyBundles
-
-ChainHandlerDone:
- NESTED_RETURN
-
- .endp ChainHandler
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// UnchainHandler
-//
-// Description:
-// Unchains an interrupt handler
-//
-// Arguments:
-//
-// Returns:
-//
-// Notes:
-//
-//
- ASM_GLOBAL UnchainHandler
- .proc UnchainHandler
-
-UnchainHandler:
-
- NESTED_SETUP( 0,2+3,3,0 )
-
- mov r8=1 // r8 = success
- mov r2=cr.iva;; // r2 = interrupt vector address
-
-// First copy original Ext Int bundle 0 back to it's proper home...
- addl out0=RELOCATED_EXT_INT, r2 // out0 = source - in reserved IVT
- addl out1=EXT_INT_ENTRY_OFFSET, r2 // out1 = destination buffer - first bundle of Ext Int entry
- mov out2=1;; // out2 = copy 1 bundle
- br.call.sptk.few b0 = CopyBundles
-
-// Now, relocate it again...
- addl out0=EXT_INT_ENTRY_OFFSET, r2 // out1 = New runtime address
- addl out1=RELOCATED_EXT_INT, r2;; // out0 = IP address of previous location
- mov out2=out0;; // out2 = IP address of new location
- br.call.sptk.few b0 = RelocateBundle
-
-// Last, restore the patch area
- movl out0=PatchSaveBuffer // out0 = source buffer
- addl out1=PATCH_ENTRY_OFFSET, r2 // out1 = destination buffer
- mov out2=0x40;; // out2 = number of bundles to copy... save entire IDT entry
- br.call.sptk.few b0 = CopyBundles
-
-UnchainHandlerDone:
- NESTED_RETURN
-
- .endp UnchainHandler
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// CopyBundles
-//
-// Description:
-// Copies instruction bundles - flushes icache as necessary
-//
-// Arguments:
-// in0 - Bundle source
-// in1 - Bundle destination
-// in2 - Bundle count
-//
-// Returns:
-//
-// Notes:
-// This procedure is a leaf routine
-//
- .proc CopyBundles
-
-CopyBundles:
-
- NESTED_SETUP(3,2+1,0,0)
-
- shl in2=in2, 1;; // in2 = count of 8 byte blocks to copy
-
-CopyBundlesLoop:
-
- cmp.eq p14, p15 = 0, in2;; // Check if done
-(p14) br.sptk.few CopyBundlesDone;;
-
- ld8 loc2=[in0], 0x8;; // loc2 = source bytes
- st8 [in1]=loc2;; // [in1] = destination bytes
- fc in1;; // Flush instruction cache
- sync.i;; // Ensure local and remote data/inst caches in sync
- srlz.i;; // Ensure sync has been observed
- add in1=0x8, in1;; // in1 = next destination
- add in2=-1, in2;; // in2 = decrement 8 bytes blocks to copy
- br.sptk.few CopyBundlesLoop;;
-
-CopyBundlesDone:
- NESTED_RETURN
-
- .endp CopyBundles
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// RelocateBundle
-//
-// Description:
-// Relocates an instruction bundle by updating any ip-relative branch instructions.
-//
-// Arguments:
-// in0 - Runtime address of bundle
-// in1 - IP address of previous location of bundle
-// in2 - IP address of new location of bundle
-//
-// Returns:
-// in0 - 1 if successful or 0 if unsuccessful
-//
-// Notes:
-// This routine examines all slots in the given bundle that are destined for the
-// branch execution unit. If any of these slots contain an IP-relative branch
-// namely instructions B1, B2, B3, or B6, the slot is fixed-up with a new relative
-// address. Errors can occur if a branch cannot be reached.
-//
- .proc RelocateBundle
-
-RelocateBundle:
-
- NESTED_SETUP(3,2+4,3,0)
-
- mov loc2=SLOT0 // loc2 = slot index
- mov loc5=in0;; // loc5 = runtime address of bundle
- mov in0=1;; // in0 = success
-
-RelocateBundleNextSlot:
-
- cmp.ge p14, p15 = SLOT2, loc2;; // Check if maximum slot
-(p15) br.sptk.few RelocateBundleDone
-
- mov out0=loc5;; // out0 = runtime address of bundle
- br.call.sptk.few b0 = GetTemplate
- mov loc3=out0;; // loc3 = instruction template
- mov out0=loc5 // out0 = runtime address of bundle
- mov out1=loc2;; // out1 = instruction slot number
- br.call.sptk.few b0 = GetSlot
- mov loc4=out0;; // loc4 = instruction encoding
- mov out0=loc4 // out0 = instuction encoding
- mov out1=loc2 // out1 = instruction slot number
- mov out2=loc3;; // out2 = instruction template
- br.call.sptk.few b0 = IsSlotBranch
- cmp.eq p14, p15 = 1, out0;; // Check if branch slot
-(p15) add loc2=1,loc2 // Increment slot
-(p15) br.sptk.few RelocateBundleNextSlot
- mov out0=loc4 // out0 = instuction encoding
- mov out1=in1 // out1 = IP address of previous location
- mov out2=in2;; // out2 = IP address of new location
- br.call.sptk.few b0 = RelocateSlot
- cmp.eq p14, p15 = 1, out1;; // Check if relocated slot
-(p15) mov in0=0 // in0 = failure
-(p15) br.sptk.few RelocateBundleDone
- mov out2=out0;; // out2 = instruction encoding
- mov out0=loc5 // out0 = runtime address of bundle
- mov out1=loc2;; // out1 = instruction slot number
- br.call.sptk.few b0 = SetSlot
- add loc2=1,loc2;; // Increment slot
- br.sptk.few RelocateBundleNextSlot
-
-RelocateBundleDone:
- NESTED_RETURN
-
- .endp RelocateBundle
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// RelocateSlot
-//
-// Description:
-// Relocates an instruction bundle by updating any ip-relative branch instructions.
-//
-// Arguments:
-// in0 - Instruction encoding (41-bits, right justified)
-// in1 - IP address of previous location of bundle
-// in2 - IP address of new location of bundle
-//
-// Returns:
-// in0 - Instruction encoding (41-bits, right justified)
-// in1 - 1 if successful otherwise 0
-//
-// Notes:
-// This procedure is a leaf routine
-//
- .proc RelocateSlot
-
-RelocateSlot:
- NESTED_SETUP(3,2+5,0,0)
- extr.u loc2=in0, 37, 4;; // loc2 = instruction opcode
- cmp.eq p14, p15 = 4, loc2;; // IP-relative branch (B1) or
- // IP-relative counted branch (B2)
-(p15) cmp.eq p14, p15 = 5, loc2;; // IP-relative call (B3)
-(p15) cmp.eq p14, p15 = 7, loc2;; // IP-relative predict (B6)
-(p15) mov in1=1 // Instruction did not need to be reencoded
-(p15) br.sptk.few RelocateSlotDone
- tbit.nz p14, p15 = in0, 36;; // put relative offset sign bit in p14
- extr.u loc2=in0, 13, 20;; // loc2 = relative offset in instruction
-(p14) movl loc3=0xfffffffffff00000;; // extend sign
-(p14) or loc2=loc2, loc3;;
- shl loc2=loc2,4;; // convert to byte offset instead of bundle offset
- add loc3=loc2, in1;; // loc3 = physical address of branch target
-(p14) sub loc2=r0,loc2;; // flip sign in loc2 if offset is negative
- sub loc4=loc3,in2;; // loc4 = relative offset from new ip to branch target
- cmp.lt p15, p14 = 0, loc4;; // get new sign bit
-(p14) sub loc5=r0,loc4 // get absolute value of offset
-(p15) mov loc5=loc4;;
- movl loc6=0x0FFFFFF;; // maximum offset in bytes for ip-rel branch
- cmp.gt p14, p15 = loc5, loc6;; // check to see we're not out of range for an ip-relative branch
-(p14) br.sptk.few RelocateSlotError
- cmp.lt p15, p14 = 0, loc4;; // store sign in p14 again
-(p14) dep in0=-1,in0,36,1 // store sign bit in instruction
-(p15) dep in0=0,in0,36,1
- shr loc4=loc4, 4;; // convert back to bundle offset
- dep in0=loc4,in0,13,16;; // put first 16 bits of new offset into instruction
- shr loc4=loc4,16;;
- dep in0=loc4,in0,13+16,4 // put last 4 bits of new offset into instruction
- mov in1=1;; // in1 = success
- br.sptk.few RelocateSlotDone;;
-
-RelocateSlotError:
- mov in1=0;; // in1 = failure
-
-RelocateSlotDone:
- NESTED_RETURN
-
- .endp RelocateSlot
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// IsSlotBranch
-//
-// Description:
-// Determines if the given instruction is a branch instruction.
-//
-// Arguments:
-// in0 - Instruction encoding (41-bits, right justified)
-// in1 - Instruction slot number
-// in2 - Bundle template
-//
-// Returns:
-// in0 - 1 if branch or 0 if not branch
-//
-// Notes:
-// This procedure is a leaf routine
-//
-// IsSlotBranch recognizes all branch instructions by looking at the provided template.
-// The instruction encoding is only passed to this routine for future expansion.
-//
- .proc IsSlotBranch
-
-IsSlotBranch:
-
- NESTED_SETUP (3,2+0,0,0)
-
- mov in0=1;; // in0 = 1 which destroys the instruction
- andcm in2=in2,in0;; // in2 = even template to reduce compares
- mov in0=0;; // in0 = not a branch
- cmp.eq p14, p15 = 0x16, in2;; // Template 0x16 is BBB
-(p14) br.sptk.few IsSlotBranchTrue
- cmp.eq p14, p15 = SLOT0, in1;; // Slot 0 has no other possiblities
-(p14) br.sptk.few IsSlotBranchDone
- cmp.eq p14, p15 = 0x12, in2;; // Template 0x12 is MBB
-(p14) br.sptk.few IsSlotBranchTrue
- cmp.eq p14, p15 = SLOT1, in1;; // Slot 1 has no other possiblities
-(p14) br.sptk.few IsSlotBranchDone
- cmp.eq p14, p15 = 0x10, in2;; // Template 0x10 is MIB
-(p14) br.sptk.few IsSlotBranchTrue
- cmp.eq p14, p15 = 0x18, in2;; // Template 0x18 is MMB
-(p14) br.sptk.few IsSlotBranchTrue
- cmp.eq p14, p15 = 0x1C, in2;; // Template 0x1C is MFB
-(p14) br.sptk.few IsSlotBranchTrue
- br.sptk.few IsSlotBranchDone
-
-IsSlotBranchTrue:
- mov in0=1;; // in0 = branch
-
-IsSlotBranchDone:
- NESTED_RETURN
-
- .endp IsSlotBranch
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// GetTemplate
-//
-// Description:
-// Retrieves the instruction template for an instruction bundle
-//
-// Arguments:
-// in0 - Runtime address of bundle
-//
-// Returns:
-// in0 - Instruction template (5-bits, right-justified)
-//
-// Notes:
-// This procedure is a leaf routine
-//
- .proc GetTemplate
-
-GetTemplate:
-
- NESTED_SETUP (1,2+2,0,0)
-
- ld8 loc2=[in0], 0x8 // loc2 = first 8 bytes of branch bundle
- movl loc3=MASK_0_4;; // loc3 = template mask
- and loc2=loc2,loc3;; // loc2 = template, right justified
- mov in0=loc2;; // in0 = template, right justified
-
- NESTED_RETURN
-
- .endp GetTemplate
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// GetSlot
-//
-// Description:
-// Gets the instruction encoding for an instruction slot and bundle
-//
-// Arguments:
-// in0 - Runtime address of bundle
-// in1 - Instruction slot (either 0, 1, or 2)
-//
-// Returns:
-// in0 - Instruction encoding (41-bits, right justified)
-//
-// Notes:
-// This procedure is a leaf routine
-//
-// Slot0 - [in0 + 0x8] Bits 45-5
-// Slot1 - [in0 + 0x8] Bits 63-46 and [in0] Bits 22-0
-// Slot2 - [in0] Bits 63-23
-//
- .proc GetSlot
-
-GetSlot:
- NESTED_SETUP (2,2+3,0,0)
-
- ld8 loc2=[in0], 0x8;; // loc2 = first 8 bytes of branch bundle
- ld8 loc3=[in0];; // loc3 = second 8 bytes of branch bundle
- cmp.eq p14, p15 = 2, in1;; // check if slot 2 specified
- (p14) br.cond.sptk.few GetSlot2;; // get slot 2
- cmp.eq p14, p15 = 1, in1;; // check if slot 1 specified
- (p14) br.cond.sptk.few GetSlot1;; // get slot 1
-
-GetSlot0:
- extr.u in0=loc2, 5, 45 // in0 = extracted slot 0
- br.sptk.few GetSlotDone;;
-
-GetSlot1:
- extr.u in0=loc2, 46, 18 // in0 = bits 63-46 of loc2 right-justified
- extr.u loc4=loc3, 0, 23;; // loc4 = bits 22-0 of loc3 right-justified
- dep in0=loc4, in0, 18, 15;;
- shr.u loc4=loc4,15;;
- dep in0=loc4, in0, 33, 8;; // in0 = extracted slot 1
- br.sptk.few GetSlotDone;;
-
-GetSlot2:
- extr.u in0=loc3, 23, 41;; // in0 = extracted slot 2
-
-GetSlotDone:
- NESTED_RETURN
-
- .endp GetSlot
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// SetSlot
-//
-// Description:
-// Sets the instruction encoding for an instruction slot and bundle
-//
-// Arguments:
-// in0 - Runtime address of bundle
-// in1 - Instruction slot (either 0, 1, or 2)
-// in2 - Instruction encoding (41-bits, right justified)
-//
-// Returns:
-//
-// Notes:
-// This procedure is a leaf routine
-//
- .proc SetSlot
-
-SetSlot:
- NESTED_SETUP (3,2+3,0,0)
-
- ld8 loc2=[in0], 0x8;; // loc2 = first 8 bytes of bundle
- ld8 loc3=[in0];; // loc3 = second 8 bytes of bundle
- cmp.eq p14, p15 = 2, in1;; // check if slot 2 specified
- (p14) br.cond.sptk.few SetSlot2;; // set slot 2
- cmp.eq p14, p15 = 1, in1;; // check if slot 1 specified
- (p14) br.cond.sptk.few SetSlot1;; // set slot 1
-
-SetSlot0:
- dep loc2=0, loc2, 5, 41;; // remove old instruction from slot 0
- shl loc4=in2, 5;; // loc4 = new instruction ready to be inserted
- or loc2=loc2, loc4;; // loc2 = updated first 8 bytes of bundle
- add loc4=0x8,in0;; // loc4 = address to store first 8 bytes of bundle
- st8 [loc4]=loc2 // [loc4] = updated bundle
- br.sptk.few SetSlotDone;;
- ;;
-
-SetSlot1:
- dep loc2=0, loc2, 46, 18 // remove old instruction from slot 1
- dep loc3=0, loc3, 0, 23;;
- shl loc4=in2, 46;; // loc4 = partial instruction ready to be inserted
- or loc2=loc2, loc4;; // loc2 = updated first 8 bytes of bundle
- add loc4=0x8,in0;; // loc4 = address to store first 8 bytes of bundle
- st8 [loc4]=loc2;; // [loc4] = updated bundle
- shr.u loc4=in2, 18;; // loc4 = partial instruction ready to be inserted
- or loc3=loc3, loc4;; // loc3 = updated second 8 bytes of bundle
- st8 [in0]=loc3;; // [in0] = updated bundle
- br.sptk.few SetSlotDone;;
-
-SetSlot2:
- dep loc3=0, loc3, 23, 41;; // remove old instruction from slot 2
- shl loc4=in2, 23;; // loc4 = instruction ready to be inserted
- or loc3=loc3, loc4;; // loc3 = updated second 8 bytes of bundle
- st8 [in0]=loc3;; // [in0] = updated bundle
-
-SetSlotDone:
-
- NESTED_RETURN
- .endp SetSlot
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// GetIva
-//
-// Description:
-// C callable function to obtain the current value of IVA
-//
-// Returns:
-// Current value if IVA
-
- ASM_GLOBAL GetIva
- .proc GetIva
-GetIva:
- mov r8=cr2;;
- br.ret.sptk.many b0
-
- .endp GetIva
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// ProgramInterruptFlags
-//
-// Description:
-// C callable function to enable/disable interrupts
-//
-// Returns:
-// Previous state of psr.ic
-//
- ASM_GLOBAL ProgramInterruptFlags
- .proc ProgramInterruptFlags
-ProgramInterruptFlags:
- alloc loc0=1,2,0,0;;
- mov loc0=psr
- mov loc1=0x6000;;
- and r8=loc0, loc1 // obtain current psr.ic and psr.i state
- and in0=in0, loc1 // insure no extra bits set in input
- andcm loc0=loc0,loc1;; // clear original psr.i and psr.ic
- or loc0=loc0,in0;; // OR in new psr.ic value
- mov psr.l=loc0;; // write new psr
- srlz.d
- br.ret.sptk.many b0 // return
-
- .endp ProgramInterruptFlags
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// SpillContext
-//
-// Description:
-// Saves system context to context record.
-//
-// Arguments:
-// in0 = 512 byte aligned context record address
-// in1 = original B0
-// in2 = original ar.bsp
-// in3 = original ar.bspstore
-// in4 = original ar.rnat
-// in5 = original ar.pfs
-//
-// Notes:
-// loc0 - scratch
-// loc1 - scratch
-// loc2 - temporary application unat storage
-// loc3 - temporary exception handler unat storage
-
- .proc SpillContext
-
-SpillContext:
- alloc loc0=6,4,0,0;; // alloc 6 input, 4 locals, 0 outs
- mov loc2=ar.unat;; // save application context unat (spilled later)
- mov ar.unat=r0;; // set UNAT=0
- st8.spill [in0]=r0,8;;
- st8.spill [in0]=r1,8;; // save R1 - R31
- st8.spill [in0]=r2,8;;
- st8.spill [in0]=r3,8;;
- st8.spill [in0]=r4,8;;
- st8.spill [in0]=r5,8;;
- st8.spill [in0]=r6,8;;
- st8.spill [in0]=r7,8;;
- st8.spill [in0]=r8,8;;
- st8.spill [in0]=r9,8;;
- st8.spill [in0]=r10,8;;
- st8.spill [in0]=r11,8;;
- st8.spill [in0]=r12,8;;
- st8.spill [in0]=r13,8;;
- st8.spill [in0]=r14,8;;
- st8.spill [in0]=r15,8;;
- st8.spill [in0]=r16,8;;
- st8.spill [in0]=r17,8;;
- st8.spill [in0]=r18,8;;
- st8.spill [in0]=r19,8;;
- st8.spill [in0]=r20,8;;
- st8.spill [in0]=r21,8;;
- st8.spill [in0]=r22,8;;
- st8.spill [in0]=r23,8;;
- st8.spill [in0]=r24,8;;
- st8.spill [in0]=r25,8;;
- st8.spill [in0]=r26,8;;
- st8.spill [in0]=r27,8;;
- st8.spill [in0]=r28,8;;
- st8.spill [in0]=r29,8;;
- st8.spill [in0]=r30,8;;
- st8.spill [in0]=r31,8;;
- mov loc3=ar.unat;; // save debugger context unat (spilled later)
- stf.spill [in0]=f2,16;; // save f2 - f31
- stf.spill [in0]=f3,16;;
- stf.spill [in0]=f4,16;;
- stf.spill [in0]=f5,16;;
- stf.spill [in0]=f6,16;;
- stf.spill [in0]=f7,16;;
- stf.spill [in0]=f8,16;;
- stf.spill [in0]=f9,16;;
- stf.spill [in0]=f10,16;;
- stf.spill [in0]=f11,16;;
- stf.spill [in0]=f12,16;;
- stf.spill [in0]=f13,16;;
- stf.spill [in0]=f14,16;;
- stf.spill [in0]=f15,16;;
- stf.spill [in0]=f16,16;;
- stf.spill [in0]=f17,16;;
- stf.spill [in0]=f18,16;;
- stf.spill [in0]=f19,16;;
- stf.spill [in0]=f20,16;;
- stf.spill [in0]=f21,16;;
- stf.spill [in0]=f22,16;;
- stf.spill [in0]=f23,16;;
- stf.spill [in0]=f24,16;;
- stf.spill [in0]=f25,16;;
- stf.spill [in0]=f26,16;;
- stf.spill [in0]=f27,16;;
- stf.spill [in0]=f28,16;;
- stf.spill [in0]=f29,16;;
- stf.spill [in0]=f30,16;;
- stf.spill [in0]=f31,16;;
- mov loc0=pr;; // save predicates
- st8.spill [in0]=loc0,8;;
- st8.spill [in0]=in1,8;; // save b0 - b7... in1 already equals saved b0
- mov loc0=b1;;
- st8.spill [in0]=loc0,8;;
- mov loc0=b2;;
- st8.spill [in0]=loc0,8;;
- mov loc0=b3;;
- st8.spill [in0]=loc0,8;;
- mov loc0=b4;;
- st8.spill [in0]=loc0,8;;
- mov loc0=b5;;
- st8.spill [in0]=loc0,8;;
- mov loc0=b6;;
- st8.spill [in0]=loc0,8;;
- mov loc0=b7;;
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.rsc;; // save ar.rsc
- st8.spill [in0]=loc0,8;;
- st8.spill [in0]=in2,8;; // save ar.bsp (in2)
- st8.spill [in0]=in3,8;; // save ar.bspstore (in3)
- st8.spill [in0]=in4,8;; // save ar.rnat (in4)
- mov loc0=ar.fcr;; // save ar.fcr (ar21 - IA32 floating-point control register)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.eflag;; // save ar.eflag (ar24)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.csd;; // save ar.csd (ar25 - ia32 CS descriptor)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.ssd;; // save ar.ssd (ar26 - ia32 ss descriptor)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.cflg;; // save ar.cflg (ar27 - ia32 cr0 and cr4)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.fsr;; // save ar.fsr (ar28 - ia32 floating-point status register)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.fir;; // save ar.fir (ar29 - ia32 floating-point instruction register)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.fdr;; // save ar.fdr (ar30 - ia32 floating-point data register)
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.ccv;; // save ar.ccv
- st8.spill [in0]=loc0,8;;
- st8.spill [in0]=loc2,8;; // save ar.unat (saved to loc2 earlier)
- mov loc0=ar.fpsr;; // save floating point status register
- st8.spill [in0]=loc0,8;;
- st8.spill [in0]=in5,8;; // save ar.pfs
- mov loc0=ar.lc;; // save ar.lc
- st8.spill [in0]=loc0,8;;
- mov loc0=ar.ec;; // save ar.ec
- st8.spill [in0]=loc0,8;;
-
- // save control registers
- mov loc0=cr.dcr;; // save dcr
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.itm;; // save itm
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.iva;; // save iva
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.pta;; // save pta
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.ipsr;; // save ipsr
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.isr;; // save isr
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.iip;; // save iip
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.ifa;; // save ifa
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.itir;; // save itir
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.iipa;; // save iipa
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.ifs;; // save ifs
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.iim;; // save iim
- st8.spill [in0]=loc0,8;;
- mov loc0=cr.iha;; // save iha
- st8.spill [in0]=loc0,8;;
-
- // save debug registers
- mov loc0=dbr[r0];; // save dbr0 - dbr7
- st8.spill [in0]=loc0,8;;
- movl loc1=1;;
- mov loc0=dbr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=2;;
- mov loc0=dbr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=3;;
- mov loc0=dbr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=4;;
- mov loc0=dbr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=5;;
- mov loc0=dbr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=6;;
- mov loc0=dbr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=7;;
- mov loc0=dbr[loc1];;
- st8.spill [in0]=loc0,8;;
- mov loc0=ibr[r0];; // save ibr0 - ibr7
- st8.spill [in0]=loc0,8;;
- movl loc1=1;;
- mov loc0=ibr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=2;;
- mov loc0=ibr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=3;;
- mov loc0=ibr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=4;;
- mov loc0=ibr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=5;;
- mov loc0=ibr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=6;;
- mov loc0=ibr[loc1];;
- st8.spill [in0]=loc0,8;;
- movl loc1=7;;
- mov loc0=ibr[loc1];;
- st8.spill [in0]=loc0,8;;
- st8.spill [in0]=loc3;;
-
- br.ret.sptk.few b0
-
- .endp SpillContext
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// FillContext
-//
-// Description:
-// Restores register context from context record.
-//
-// Arguments:
-// in0 = address of last element 512 byte aligned context record address
-// in1 = modified B0
-// in2 = modified ar.bsp
-// in3 = modified ar.bspstore
-// in4 = modified ar.rnat
-// in5 = modified ar.pfs
-//
-// Notes:
-// loc0 - scratch
-// loc1 - scratch
-// loc2 - temporary application unat storage
-// loc3 - temporary exception handler unat storage
-
- .proc FillContext
-FillContext:
- alloc loc0=6,4,0,0;; // alloc 6 inputs, 4 locals, 0 outs
- ld8.fill loc3=[in0],-8;; // int_nat (nat bits for R1-31)
- movl loc1=7;; // ibr7
- ld8.fill loc0=[in0],-8;;
- mov ibr[loc1]=loc0;;
- movl loc1=6;; // ibr6
- ld8.fill loc0=[in0],-8;;
- mov ibr[loc1]=loc0;;
- movl loc1=5;; // ibr5
- ld8.fill loc0=[in0],-8;;
- mov ibr[loc1]=loc0;;
- movl loc1=4;; // ibr4
- ld8.fill loc0=[in0],-8;;
- mov ibr[loc1]=loc0;;
- movl loc1=3;; // ibr3
- ld8.fill loc0=[in0],-8;;
- mov ibr[loc1]=loc0;;
- movl loc1=2;; // ibr2
- ld8.fill loc0=[in0],-8;;
- mov ibr[loc1]=loc0;;
- movl loc1=1;; // ibr1
- ld8.fill loc0=[in0],-8;;
- mov ibr[loc1]=loc0;;
- ld8.fill loc0=[in0],-8;; // ibr0
- mov ibr[r0]=loc0;;
- movl loc1=7;; // dbr7
- ld8.fill loc0=[in0],-8;;
- mov dbr[loc1]=loc0;;
- movl loc1=6;; // dbr6
- ld8.fill loc0=[in0],-8;;
- mov dbr[loc1]=loc0;;
- movl loc1=5;; // dbr5
- ld8.fill loc0=[in0],-8;;
- mov dbr[loc1]=loc0;;
- movl loc1=4;; // dbr4
- ld8.fill loc0=[in0],-8;;
- mov dbr[loc1]=loc0;;
- movl loc1=3;; // dbr3
- ld8.fill loc0=[in0],-8;;
- mov dbr[loc1]=loc0;;
- movl loc1=2;; // dbr2
- ld8.fill loc0=[in0],-8;;
- mov dbr[loc1]=loc0;;
- movl loc1=1;; // dbr1
- ld8.fill loc0=[in0],-8;;
- mov dbr[loc1]=loc0;;
- ld8.fill loc0=[in0],-8;; // dbr0
- mov dbr[r0]=loc0;;
- ld8.fill loc0=[in0],-8;; // iha
- mov cr.iha=loc0;;
- ld8.fill loc0=[in0],-8;; // iim
- mov cr.iim=loc0;;
- ld8.fill loc0=[in0],-8;; // ifs
- mov cr.ifs=loc0;;
- ld8.fill loc0=[in0],-8;; // iipa
- mov cr.iipa=loc0;;
- ld8.fill loc0=[in0],-8;; // itir
- mov cr.itir=loc0;;
- ld8.fill loc0=[in0],-8;; // ifa
- mov cr.ifa=loc0;;
- ld8.fill loc0=[in0],-8;; // iip
- mov cr.iip=loc0;;
- ld8.fill loc0=[in0],-8;; // isr
- mov cr.isr=loc0;;
- ld8.fill loc0=[in0],-8;; // ipsr
- mov cr.ipsr=loc0;;
- ld8.fill loc0=[in0],-8;; // pta
- mov cr.pta=loc0;;
- ld8.fill loc0=[in0],-8;; // iva
- mov cr.iva=loc0;;
- ld8.fill loc0=[in0],-8;; // itm
- mov cr.itm=loc0;;
- ld8.fill loc0=[in0],-8;; // dcr
- mov cr.dcr=loc0;;
- ld8.fill loc0=[in0],-8;; // ec
- mov ar.ec=loc0;;
- ld8.fill loc0=[in0],-8;; // lc
- mov ar.lc=loc0;;
- ld8.fill in5=[in0],-8;; // ar.pfs
- ld8.fill loc0=[in0],-8;; // ar.fpsr
- mov ar.fpsr=loc0;;
- ld8.fill loc2=[in0],-8;; // ar.unat - restored later...
- ld8.fill loc0=[in0],-8;; // ar.ccv
- mov ar.ccv=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.fdr
- mov ar.fdr=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.fir
- mov ar.fir=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.fsr
- mov ar.fsr=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.cflg
- mov ar.cflg=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.ssd
- mov ar.ssd=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.csd
- mov ar.csd=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.eflag
- mov ar.eflag=loc0;;
- ld8.fill loc0=[in0],-8;; // ar.fcr
- mov ar.fcr=loc0;;
- ld8.fill in4=[in0],-8;; // ar.rnat
- ld8.fill in3=[in0],-8;; // bspstore
- ld8.fill in2=[in0],-8;; // bsp
- ld8.fill loc0=[in0],-8;; // ar.rsc
- mov ar.rsc=loc0;;
- ld8.fill loc0=[in0],-8;; // B7 - B0
- mov b7=loc0;;
- ld8.fill loc0=[in0],-8;;
- mov b6=loc0;;
- ld8.fill loc0=[in0],-8;;
- mov b5=loc0;;
- ld8.fill loc0=[in0],-8;;
- mov b4=loc0;;
- ld8.fill loc0=[in0],-8;;
- mov b3=loc0;;
- ld8.fill loc0=[in0],-8;;
- mov b2=loc0;;
- ld8.fill loc0=[in0],-8;;
- mov b1=loc0;;
- ld8.fill in1=[in0],-8;; // b0 is temporarily stored in in1
- ld8.fill loc0=[in0],-16;; // predicates
- mov pr=loc0;;
- ldf.fill f31=[in0],-16;;
- ldf.fill f30=[in0],-16;;
- ldf.fill f29=[in0],-16;;
- ldf.fill f28=[in0],-16;;
- ldf.fill f27=[in0],-16;;
- ldf.fill f26=[in0],-16;;
- ldf.fill f25=[in0],-16;;
- ldf.fill f24=[in0],-16;;
- ldf.fill f23=[in0],-16;;
- ldf.fill f22=[in0],-16;;
- ldf.fill f21=[in0],-16;;
- ldf.fill f20=[in0],-16;;
- ldf.fill f19=[in0],-16;;
- ldf.fill f18=[in0],-16;;
- ldf.fill f17=[in0],-16;;
- ldf.fill f16=[in0],-16;;
- ldf.fill f15=[in0],-16;;
- ldf.fill f14=[in0],-16;;
- ldf.fill f13=[in0],-16;;
- ldf.fill f12=[in0],-16;;
- ldf.fill f11=[in0],-16;;
- ldf.fill f10=[in0],-16;;
- ldf.fill f9=[in0],-16;;
- ldf.fill f8=[in0],-16;;
- ldf.fill f7=[in0],-16;;
- ldf.fill f6=[in0],-16;;
- ldf.fill f5=[in0],-16;;
- ldf.fill f4=[in0],-16;;
- ldf.fill f3=[in0],-16;;
- ldf.fill f2=[in0],-8;;
- mov ar.unat=loc3;; // restore unat (int_nat) before fill of general registers
- ld8.fill r31=[in0],-8;;
- ld8.fill r30=[in0],-8;;
- ld8.fill r29=[in0],-8;;
- ld8.fill r28=[in0],-8;;
- ld8.fill r27=[in0],-8;;
- ld8.fill r26=[in0],-8;;
- ld8.fill r25=[in0],-8;;
- ld8.fill r24=[in0],-8;;
- ld8.fill r23=[in0],-8;;
- ld8.fill r22=[in0],-8;;
- ld8.fill r21=[in0],-8;;
- ld8.fill r20=[in0],-8;;
- ld8.fill r19=[in0],-8;;
- ld8.fill r18=[in0],-8;;
- ld8.fill r17=[in0],-8;;
- ld8.fill r16=[in0],-8;;
- ld8.fill r15=[in0],-8;;
- ld8.fill r14=[in0],-8;;
- ld8.fill r13=[in0],-8;;
- ld8.fill r12=[in0],-8;;
- ld8.fill r11=[in0],-8;;
- ld8.fill r10=[in0],-8;;
- ld8.fill r9=[in0],-8;;
- ld8.fill r8=[in0],-8;;
- ld8.fill r7=[in0],-8;;
- ld8.fill r6=[in0],-8;;
- ld8.fill r5=[in0],-8;;
- ld8.fill r4=[in0],-8;;
- ld8.fill r3=[in0],-8;;
- ld8.fill r2=[in0],-8;;
- ld8.fill r1=[in0],-8;;
- mov ar.unat=loc2;; // restore application context unat
-
- br.ret.sptk.many b0
-
- .endp FillContext
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// HookHandler
-//
-// Description:
-// Common branch target from hooked IVT entries. Runs in interrupt context.
-// Responsible for saving and restoring context and calling common C
-// handler. Banked registers running on bank 0 at entry.
-//
-// Arguments:
-// All arguments are passed in banked registers:
-// B0_REG = Original B0
-// SCRATCH_REG1 = IVT entry index
-//
-// Returns:
-// Returns via rfi
-//
-// Notes:
-// loc0 - scratch
-// loc1 - scratch
-// loc2 - vector number / mask
-// loc3 - 16 byte aligned context record address
-// loc4 - temporary storage of last address in context record
-
-HookHandler:
- flushrs;; // Synch RSE with backing store
- mov SCRATCH_REG2=ar.bsp // save interrupted context bsp
- mov SCRATCH_REG3=ar.bspstore // save interrupted context bspstore
- mov SCRATCH_REG4=ar.rnat // save interrupted context rnat
- mov SCRATCH_REG6=cr.ifs;; // save IFS in case we need to chain...
- cover;; // creates new frame, moves old
- // CFM to IFS.
- alloc SCRATCH_REG5=0,5,6,0 // alloc 5 locals, 6 outs
- ;;
- // save banked registers to locals
- mov out1=B0_REG // out1 = Original B0
- mov out2=SCRATCH_REG2 // out2 = original ar.bsp
- mov out3=SCRATCH_REG3 // out3 = original ar.bspstore
- mov out4=SCRATCH_REG4 // out4 = original ar.rnat
- mov out5=SCRATCH_REG5 // out5 = original ar.pfs
- mov loc2=SCRATCH_REG1;; // loc2 = vector number + chain flag
- bsw.1;; // switch banked registers to bank 1
- srlz.d // explicit serialize required
- // now fill in context record structure
- movl loc3=IpfContextBuf // Insure context record is aligned
- add loc0=-0x200,r0;; // mask the lower 9 bits (align on 512 byte boundary)
- and loc3=loc3,loc0;;
- add loc3=0x200,loc3;; // move to next 512 byte boundary
- // loc3 now contains the 512 byte aligned context record
- // spill register context into context record
- mov out0=loc3;; // Context record base in out0
- // original B0 in out1 already
- // original ar.bsp in out2 already
- // original ar.bspstore in out3 already
- br.call.sptk.few b0=SpillContext;; // spill context
- mov loc4=out0 // save modified address
-
- // At this point, the context has been saved to the context record and we're
- // ready to call the C part of the handler...
-
- movl loc0=CommonHandler;; // obtain address of plabel
- ld8 loc1=[loc0];; // get entry point of CommonHandler
- mov b6=loc1;; // put it in a branch register
- adds loc1= 8, loc0;; // index to GP in plabel
- ld8 r1=[loc1];; // set up gp for C call
- mov loc1=0xfffff;; // mask off so only vector bits are present
- and out0=loc2,loc1;; // pass vector number (exception type)
- mov out1=loc3;; // pass context record address
- br.call.sptk.few b0=b6;; // call C handler
-
- // We've returned from the C call, so restore the context and either rfi
- // back to interrupted thread, or chain into the SAL if this was an external interrupt
- mov out0=loc4;; // pass address of last element in context record
- br.call.sptk.few b0=FillContext;; // Fill context
- mov b0=out1 // fill in b0
- mov ar.rnat=out4
- mov ar.pfs=out5
-
- // Loadrs is necessary because the debugger may have changed some values in
- // the backing store. The processor, however may not be aware that the
- // stacked registers need to be reloaded from the backing store. Therefore,
- // we explicitly cause the RSE to refresh the stacked register's contents
- // from the backing store.
- mov loc0=ar.rsc // get RSC value
- mov loc1=ar.rsc // save it so we can restore it
- movl loc3=0xffffffffc000ffff;; // create mask for clearing RSC.loadrs
- and loc0=loc0,loc3;; // create value for RSC with RSC.loadrs==0
- mov ar.rsc=loc0;; // modify RSC
- loadrs;; // invalidate register stack
- mov ar.rsc=loc1;; // restore original RSC
-
- bsw.0;; // switch banked registers back to bank 0
- srlz.d;; // explicit serialize required
- mov PR_REG=pr // save predicates - to be restored after chaining decision
- mov B0_REG=b0 // save b0 - required by chain code
- mov loc2=EXCPT_EXTERNAL_INTERRUPT;;
- cmp.eq p7,p0=SCRATCH_REG1,loc2;; // check to see if this is the timer tick
- (p7) br.cond.dpnt.few DO_CHAIN;;
-
-NO_CHAIN:
- mov pr=PR_REG;;
- rfi;; // we're outa here.
-
-DO_CHAIN:
- mov pr=PR_REG
- mov SCRATCH_REG1=cr.iva
- mov SCRATCH_REG2=PATCH_RETURN_OFFSET;;
- add SCRATCH_REG1=SCRATCH_REG1, SCRATCH_REG2;;
- mov b0=SCRATCH_REG1;;
- br.cond.sptk.few b0;;
-
-EndHookHandler:
-
-
-/////////////////////////////////////////////
-//
-// Name:
-// HookStub
-//
-// Description:
-// HookStub will be copied from it's loaded location into the IVT when
-// an IVT entry is hooked. The IVT entry does an indirect jump via B0 to
-// HookHandler, which in turn calls into the default C handler, which calls
-// the user-installed C handler. The calls return and HookHandler executes
-// an rfi.
-//
-// Notes:
-// Saves B0 to B0_REG
-// Saves IVT index to SCRATCH_REG1 (immediate value is fixed up when code is copied
-// to the IVT entry.
-
- ASM_GLOBAL HookStub
- .proc HookStub
-HookStub:
-
- mov B0_REG=b0
- movl SCRATCH_REG1=HookHandler;;
- mov b0=SCRATCH_REG1;;
- mov SCRATCH_REG1=0;;// immediate value is fixed up during install of handler to be the vector number
- br.cond.sptk.few b0
-
- .endp HookStub
-
-
-/////////////////////////////////////////////
-// The following code is moved into IVT entry 14 (offset 3400) which is reserved
-// in the Itanium architecture. The patch code is located at the end of the
-// IVT entry.
-
-PatchCode:
- mov SCRATCH_REG0=psr
- mov SCRATCH_REG6=cr.ipsr
- mov PR_REG=pr
- mov B0_REG=b0;;
-
- // turn off any virtual translations
- movl SCRATCH_REG1 = ~( MASK(PSR_DT,1) | MASK(PSR_RT,1));;
- and SCRATCH_REG1 = SCRATCH_REG0, SCRATCH_REG1;;
- mov psr.l = SCRATCH_REG1;;
- srlz.d
- tbit.z p14, p15 = SCRATCH_REG6, PSR_IS;; // Check to see if we were
- // interrupted from IA32
- // context. If so, bail out
- // and chain to SAL immediately
- (p15) br.cond.sptk.few Stub_IVT_Passthru;;
- // we only want to take 1 out of 32 external interrupts to minimize the
- // impact to system performance. Check our interrupt count and bail
- // out if we're not up to 32
- movl SCRATCH_REG1=ExternalInterruptCount;;
- ld8 SCRATCH_REG2=[SCRATCH_REG1];; // ExternalInterruptCount
- tbit.z p14, p15 = SCRATCH_REG2, 5;; // bit 5 set?
- (p14) add SCRATCH_REG2=1, SCRATCH_REG2;; // No? Then increment
- // ExternalInterruptCount
- // and Chain to SAL
- // immediately
- (p14) st8 [SCRATCH_REG1]=SCRATCH_REG2;;
- (p14) br.cond.sptk.few Stub_IVT_Passthru;;
- (p15) mov SCRATCH_REG2=0;; // Yes? Then reset
- // ExternalInterruptCount
- // and branch to
- // HookHandler
- (p15) st8 [SCRATCH_REG1]=SCRATCH_REG2;;
- mov pr=PR_REG
- movl SCRATCH_REG1=HookHandler;; // SCRATCH_REG1 = entrypoint of HookHandler
- mov b0=SCRATCH_REG1;; // b0 = entrypoint of HookHandler
- mov SCRATCH_REG1=EXCPT_EXTERNAL_INTERRUPT;;
- br.sptk.few b0;; // branch to HookHandler
-
-PatchCodeRet:
- // fake-up an rfi to get RSE back to being coherent and insure psr has
- // original contents when interrupt occured, then exit to SAL
- // at this point:
- // cr.ifs has been modified by previous "cover"
- // SCRATCH_REG6 has original cr.ifs
-
- mov SCRATCH_REG5=cr.ipsr
- mov SCRATCH_REG4=cr.iip;;
- mov cr.ipsr=SCRATCH_REG0
- mov SCRATCH_REG1=ip;;
- add SCRATCH_REG1=0x30, SCRATCH_REG1;;
- mov cr.iip=SCRATCH_REG1;;
- rfi;; // rfi to next instruction
-
-Stub_RfiTarget:
- mov cr.ifs=SCRATCH_REG6
- mov cr.ipsr=SCRATCH_REG5
- mov cr.iip=SCRATCH_REG4;;
-
-Stub_IVT_Passthru:
- mov pr=PR_REG // pr = saved predicate registers
- mov b0=B0_REG;; // b0 = saved b0
-EndPatchCode:
-
-
-/////////////////////////////////////////////
-// The following bundle is moved into IVT entry 14 (offset 0x3400) which is reserved
-// in the Itanium architecture. This bundle will be the last bundle and will
-// be located at offset 0x37F0 in the IVT.
-
-FailsafeBranch:
-{
- .mib
- nop.m 0
- nop.i 0
- br.sptk.few -(FAILSAFE_BRANCH_OFFSET - EXT_INT_ENTRY_OFFSET - 0x10)
-}
-
-
-/////////////////////////////////////////////
-// The following bundle is moved into IVT entry 13 (offset 0x3000) which is the
-// external interrupt. It branches to the patch code.
-
-PatchCodeNewBun0:
-{
- .mib
- nop.m 0
- nop.i 0
- br.cond.sptk.few PATCH_BRANCH
-}
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Common.i b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Common.i deleted file mode 100644 index a11f780125..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Common.i +++ /dev/null @@ -1,29 +0,0 @@ -/// @file
-/// This is set of useful macros.
-///
-/// Copyright (c) 2006, 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.
-///
-/// Module Name: Common.i
-///
-///
-
-
-#define NESTED_SETUP(i,l,o,r) \
- alloc loc1=ar##.##pfs,i,l,o,r ; \
- mov loc0=b0 ;;
-
-
-#define NESTED_RETURN \
- mov b0=loc0 ; \
- mov ar##.##pfs=loc1 ;; \
- br##.##ret##.##dpnt b0 ;;
-
-#define MASK(bp,value) (value << bp)
-
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i deleted file mode 100644 index 8ce97f32c2..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i +++ /dev/null @@ -1,78 +0,0 @@ -/// @file
-/// This is set of macros used in calculating offsets in the IVT.
-///
-/// Copyright (c) 2006 - 2008, 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.
-///
-///
-
-
-#define EXCPT_EXTERNAL_INTERRUPT 12
-#define MASK_0_4 0x000000000000001F // mask bits 0 through 4
-#define SLOT0 0
-#define SLOT1 1
-#define SLOT2 2
-
-#define PSR_DT 17
-#define PSR_TB 26
-#define PSR_RT 27
-#define PSR_IS 34
-#define PSR_IT 36
-#define PSR_IC 13
-#define PSR_I 14
-#define PSR_SS 40
-#define PSR_BN 44
-#define PSR_RI_MASK 0x60000000000
-
-#define EXCPT_EXTERNAL_INTERRUPT 12
-
-#define SCRATCH_REG0 r23
-#define SCRATCH_REG1 r24
-#define SCRATCH_REG2 r25
-#define SCRATCH_REG3 r26
-#define SCRATCH_REG4 r27
-#define SCRATCH_REG5 r28
-#define SCRATCH_REG6 r29
-#define PR_REG r30
-#define B0_REG r31
-
-
-// EXT_INT_OFFSET is the offset of the external interrupt entry in the IVT
-#define EXT_INT_ENTRY_OFFSET 0x03000
-
-// PATCH_ENTRY_OFFSET is the offset into the IVT of the entry that is coopted (stolen)
-// for use by the handler. The entire entry is restored when the handler is
-// unloaded.
-#define PATCH_ENTRY_OFFSET 0x03400
-
-// PATCH_CODE_SIZE is the size of patch code
-#define PATCH_CODE_SIZE (EndPatchCode - PatchCode)
-
-// A hard coded branch back into the external interrupt IVT entry's second bundle
-// is put here, just in case the original bundle zero did not have a branch
-// This is the last bundle in the reserved IVT entry
-#define FAILSAFE_BRANCH_OFFSET (PATCH_ENTRY_OFFSET + 0x400 - 0x10)
-
-// the original external interrupt IVT entry bundle zero is copied and relocated
-// here... also in the reserved IVT entry
-// This is the second-to-last bundle in the reserved IVT entry
-#define RELOCATED_EXT_INT (PATCH_ENTRY_OFFSET + 0x400 - 0x20)
-
-// The patch is actually stored at the end of IVT:PATCH_ENTRY. The PATCH_OFFSET
-// is the offset into IVT where the patch is actually stored. It is carefully
-// located so that when we run out of patch code, the next bundle is the
-// relocated bundle 0 from the original external interrupt handler
-#define PATCH_OFFSET (PATCH_ENTRY_OFFSET + 0x400 - ( EndPatchCode - PatchCode ) - 0x20)
-
-#define PATCH_RETURN_OFFSET (PATCH_ENTRY_OFFSET + 0x400 - ( EndPatchCode - PatchCodeRet ) - 0x20)
-
-// PATCH_BRANCH is used only in the new bundle that is placed at the beginning
-// of the external interrupt IVT entry.
-#define PATCH_BRANCH (PATCH_OFFSET - EXT_INT_ENTRY_OFFSET)
-
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c deleted file mode 100644 index 44f59e8ec8..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c +++ /dev/null @@ -1,467 +0,0 @@ -/** @file
- IPF specific functions to support Debug Support protocol.
-
-Copyright (c) 2006 - 2010, 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.
-
-**/
-
-#include "PlDebugSupport.h"
-
-BOOLEAN mInHandler = FALSE;
-
-//
-// number of bundles to swap in ivt
-//
-#define NUM_BUNDLES_IN_STUB 5
-#define NUM_IVT_ENTRIES 64
-
-typedef struct {
- BUNDLE OrigBundles[NUM_BUNDLES_IN_STUB];
- CALLBACK_FUNC RegisteredCallback;
-} IVT_ENTRY;
-
-IVT_ENTRY IvtEntryTable[NUM_IVT_ENTRIES];
-
-//
-// IPF context record is overallocated by 512 bytes to guarantee a 512 byte alignment exists
-// within the buffer and still have a large enough buffer to hold a whole IPF context record.
-//
-UINT8 IpfContextBuf[sizeof (EFI_SYSTEM_CONTEXT_IPF) + 512];
-
-//
-// The PatchSaveBuffer is used to store the original bundles from the IVT where it is patched
-// with the common handler.
-//
-UINT8 PatchSaveBuffer[0x400];
-UINTN ExternalInterruptCount;
-
-
-/**
- IPF specific DebugSupport driver initialization.
-
- Must be public because it's referenced from DebugSupport.c
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-PlInitializeDebugSupportDriver (
- VOID
- )
-{
- ZeroMem (IvtEntryTable, sizeof (IvtEntryTable));
- ExternalInterruptCount = 0;
- return EFI_SUCCESS;
-}
-
-/**
- Unload handler that is called during UnloadImage() - deallocates pool memory
- used by the driver.
-
- Must be public because it's referenced from DebugSuport.c
-
- @param ImageHandle The firmware allocated handle for the EFI image.
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-EFIAPI
-PlUnloadDebugSupportDriver (
- IN EFI_HANDLE ImageHandle
- )
-{
- EFI_EXCEPTION_TYPE ExceptionType;
-
- for (ExceptionType = 0; ExceptionType < NUM_IVT_ENTRIES; ExceptionType++) {
- ManageIvtEntryTable (ExceptionType, NULL, NULL);
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- C routine that is called for all registered exceptions. This is the main
- exception dispatcher.
-
- Must be public because it's referenced from AsmFuncs.s.
-
- @param ExceptionType Specifies which processor exception.
- @param Context System Context.
-**/
-VOID
-CommonHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN EFI_SYSTEM_CONTEXT Context
- )
-{
- DEBUG_CODE_BEGIN ();
- if (mInHandler) {
- DEBUG ((EFI_D_INFO, "ERROR: Re-entered debugger!\n"
- " ExceptionType == %X\n"
- " Context == %X\n"
- " Context.SystemContextIpf->CrIip == %LX\n"
- " Context.SystemContextIpf->CrIpsr == %LX\n"
- " mInHandler == %X\n",
- (INT32)ExceptionType,
- Context,
- Context.SystemContextIpf->CrIip,
- Context.SystemContextIpf->CrIpsr,
- mInHandler));
- }
- DEBUG_CODE_END ();
-
- ASSERT (!mInHandler);
- mInHandler = TRUE;
- if (IvtEntryTable[ExceptionType].RegisteredCallback != NULL) {
- if (ExceptionType != EXCEPT_IPF_EXTERNAL_INTERRUPT) {
- IvtEntryTable[ExceptionType].RegisteredCallback (ExceptionType, Context.SystemContextIpf);
- } else {
- IvtEntryTable[ExceptionType].RegisteredCallback (Context.SystemContextIpf);
- }
- } else {
- ASSERT (0);
- }
-
- mInHandler = FALSE;
-}
-
-/**
- Given an integer number, return the physical address of the entry point in the IFT.
-
- @param HandlerIndex Index of the Handler
- @param EntryPoint IFT Entrypoint
-
-**/
-VOID
-GetHandlerEntryPoint (
- UINTN HandlerIndex,
- VOID **EntryPoint
- )
-{
- UINT8 *TempPtr;
-
- //
- // get base address of IVT
- //
- TempPtr = GetIva ();
-
- if (HandlerIndex < 20) {
- //
- // first 20 provide 64 bundles per vector
- //
- TempPtr += 0x400 * HandlerIndex;
- } else {
- //
- // the rest provide 16 bundles per vector
- //
- TempPtr += 0x5000 + 0x100 * (HandlerIndex - 20);
- }
-
- *EntryPoint = (VOID *) TempPtr;
-}
-
-/**
- This is the worker function that uninstalls and removes all handlers.
-
- @param ExceptionType Specifies which processor exception.
- @param NewBundles New Boundles.
- @param NewCallback A pointer to the new function to be registered.
-
- @retval EFI_ALEADY_STARTED Ivt already hooked.
- @retval EFI_SUCCESS Successfully uninstalled.
-
-**/
-EFI_STATUS
-ManageIvtEntryTable (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN BUNDLE NewBundles[NUM_BUNDLES_IN_STUB],
- IN CALLBACK_FUNC NewCallback
- )
-{
- BUNDLE *B0Ptr;
- UINT64 InterruptFlags;
- EFI_TPL OldTpl;
-
- //
- // Get address of bundle 0
- //
- GetHandlerEntryPoint (ExceptionType, (VOID **) &B0Ptr);
-
- if (IvtEntryTable[ExceptionType].RegisteredCallback != NULL) {
- //
- // we've already installed to this vector
- //
- if (NewCallback != NULL) {
- //
- // if the input handler is non-null, error
- //
- return EFI_ALREADY_STARTED;
- } else {
- //
- // else remove the previously installed handler
- //
- OldTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
- InterruptFlags = ProgramInterruptFlags (DISABLE_INTERRUPTS);
- if (ExceptionType == EXCEPT_IPF_EXTERNAL_INTERRUPT) {
- UnchainExternalInterrupt ();
- } else {
- UnhookEntry (ExceptionType);
- }
-
- ProgramInterruptFlags (InterruptFlags);
- gBS->RestoreTPL (OldTpl);
- //
- // re-init IvtEntryTable
- //
- ZeroMem (&IvtEntryTable[ExceptionType], sizeof (IVT_ENTRY));
- }
- } else {
- //
- // no user handler installed on this vector
- //
- if (NewCallback != NULL) {
- OldTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
- InterruptFlags = ProgramInterruptFlags (DISABLE_INTERRUPTS);
- if (ExceptionType == EXCEPT_IPF_EXTERNAL_INTERRUPT) {
- ChainExternalInterrupt (NewCallback);
- } else {
- HookEntry (ExceptionType, NewBundles, NewCallback);
- }
-
- ProgramInterruptFlags (InterruptFlags);
- gBS->RestoreTPL (OldTpl);
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Saves original IVT contents and inserts a few new bundles which are fixed up
- to store the ExceptionType and then call the common handler.
-
- @param ExceptionType Specifies which processor exception.
- @param NewBundles New Boundles.
- @param NewCallback A pointer to the new function to be hooked.
-
-**/
-VOID
-HookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN BUNDLE NewBundles[4],
- IN CALLBACK_FUNC NewCallback
- )
-{
- BUNDLE *FixupBundle;
- BUNDLE *B0Ptr;
-
- //
- // Get address of bundle 0
- //
- GetHandlerEntryPoint (ExceptionType, (VOID **) &B0Ptr);
-
- //
- // copy original bundles from IVT to IvtEntryTable so we can restore them later
- //
- CopyMem (
- IvtEntryTable[ExceptionType].OrigBundles,
- B0Ptr,
- sizeof (BUNDLE) * NUM_BUNDLES_IN_STUB
- );
- //
- // insert new B0
- //
- CopyMem (B0Ptr, NewBundles, sizeof (BUNDLE) * NUM_BUNDLES_IN_STUB);
-
- //
- // fixup IVT entry so it stores its index and whether or not to chain...
- //
- FixupBundle = B0Ptr + 2;
- FixupBundle->High |= ExceptionType << 36;
-
- InstructionCacheFlush (B0Ptr, 5);
- IvtEntryTable[ExceptionType].RegisteredCallback = NewCallback;
-}
-
-/**
- Restores original IVT contents when unregistering a callback function.
-
- @param ExceptionType Specifies which processor exception.
-
-**/
-VOID
-UnhookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- BUNDLE *B0Ptr;
-
- //
- // Get address of bundle 0
- //
- GetHandlerEntryPoint (ExceptionType, (VOID **) &B0Ptr);
- //
- // restore original bundles in IVT
- //
- CopyMem (
- B0Ptr,
- IvtEntryTable[ExceptionType].OrigBundles,
- sizeof (BUNDLE) * NUM_BUNDLES_IN_STUB
- );
- InstructionCacheFlush (B0Ptr, 5);
-}
-
-/**
- Sets up cache flush and calls assembly function to chain external interrupt.
-
- Records new callback in IvtEntryTable.
-
- @param NewCallback A pointer to the interrupt handle.
-
-**/
-VOID
-ChainExternalInterrupt (
- IN CALLBACK_FUNC NewCallback
- )
-{
- VOID *Start;
-
- Start = (VOID *) ((UINT8 *) GetIva () + 0x400 * EXCEPT_IPF_EXTERNAL_INTERRUPT + 0x400);
- IvtEntryTable[EXCEPT_IPF_EXTERNAL_INTERRUPT].RegisteredCallback = NewCallback;
- ChainHandler ();
- InstructionCacheFlush (Start, 0x400);
-}
-
-/**
- Sets up cache flush and calls assembly function to restore external interrupt.
- Removes registered callback from IvtEntryTable.
-
-**/
-VOID
-UnchainExternalInterrupt (
- VOID
- )
-{
- VOID *Start;
-
- Start = (VOID *) ((UINT8 *) GetIva () + 0x400 * EXCEPT_IPF_EXTERNAL_INTERRUPT + 0x400);
- UnchainHandler ();
- InstructionCacheFlush (Start, 0x400);
- IvtEntryTable[EXCEPT_IPF_EXTERNAL_INTERRUPT].RegisteredCallback = NULL;
-}
-
-/**
- Returns the maximum value that may be used for the ProcessorIndex parameter in
- RegisterPeriodicCallback() and RegisterExceptionCallback().
-
- Hard coded to support only 1 processor for now.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param MaxProcessorIndex Pointer to a caller-allocated UINTN in which the maximum supported
- processor index is returned. Always 0 returned.
-
- @retval EFI_SUCCESS Always returned with **MaxProcessorIndex set to 0.
-
-**/
-EFI_STATUS
-EFIAPI
-GetMaximumProcessorIndex (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- OUT UINTN *MaxProcessorIndex
- )
-{
- *MaxProcessorIndex = 0;
- return (EFI_SUCCESS);
-}
-
-/**
- Registers a function to be called back periodically in interrupt context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param PeriodicCallback A pointer to a function of type PERIODIC_CALLBACK that is the main
- periodic entry point of the debug agent.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterPeriodicCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_PERIODIC_CALLBACK PeriodicCallback
- )
-{
- return ManageIvtEntryTable (EXCEPT_IPF_EXTERNAL_INTERRUPT, NULL, PeriodicCallback);
-}
-
-/**
- Registers a function to be called when a given processor exception occurs.
-
- This code executes in boot services context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param ExceptionCallback A pointer to a function of type EXCEPTION_CALLBACK that is called
- when the processor exception specified by ExceptionType occurs.
- @param ExceptionType Specifies which processor exception to hook.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterExceptionCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_EXCEPTION_CALLBACK ExceptionCallback,
- IN EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- return ManageIvtEntryTable (
- ExceptionType,
- (BUNDLE *) ((EFI_PLABEL *) HookStub)->EntryPoint,
- ExceptionCallback
- );
-}
-
-/**
- Invalidates processor instruction cache for a memory range. Subsequent execution in this range
- causes a fresh memory fetch to retrieve code to be executed.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor's instruction cache is to be invalidated.
- @param Start Specifies the physical base of the memory range to be invalidated.
- @param Length Specifies the minimum number of bytes in the processor's instruction
- cache to invalidate.
-
- @retval EFI_SUCCESS Always returned.
-
-**/
-EFI_STATUS
-EFIAPI
-InvalidateInstructionCache (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN VOID *Start,
- IN UINTN Length
- )
-{
- InstructionCacheFlush (Start, Length);
- return EFI_SUCCESS;
-}
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.h b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.h deleted file mode 100644 index 0cf29cadfb..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.h +++ /dev/null @@ -1,324 +0,0 @@ -/** @file
- IPF specific types, macros, and definitions for Debug Support Driver.
-
-Copyright (c) 2004 - 2010, 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.
-
-**/
-
-#ifndef _PLDEBUG_SUPPORT_H_
-#define _PLDEBUG_SUPPORT_H_
-
-#include <Uefi.h>
-
-#include <Protocol/DebugSupport.h>
-#include <Protocol/LoadedImage.h>
-
-#include <Library/DebugLib.h>
-#include <Library/UefiDriverEntryPoint.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-
-#define DISABLE_INTERRUPTS 0UL
-
-#define EFI_ISA IsaIpf
-
-typedef struct {
- UINT64 Low;
- UINT64 High;
-} BUNDLE;
-
-typedef
-VOID
-(*CALLBACK_FUNC) (
- );
-
-/**
- IPF specific DebugSupport driver initialization.
-
- Must be public because it's referenced from DebugSupport.c
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-PlInitializeDebugSupportDriver (
- VOID
- );
-
-/**
- Unload handler that is called during UnloadImage() - deallocates pool memory
- used by the driver.
-
- Must be public because it's referenced from DebugSuport.c
-
- @param ImageHandle The firmware allocated handle for the EFI image.
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-EFIAPI
-PlUnloadDebugSupportDriver (
- IN EFI_HANDLE ImageHandle
- );
-
-/**
- C callable function to obtain the current value of IVA.
-
- @return Current value of IVA.
-
-**/
-VOID *
-GetIva (
- VOID
- );
-
-/**
- C callable function that HookStub will be copied from it's loaded location into the IVT when
- an IVT entry is hooked.
-
-**/
-VOID
-HookStub (
- VOID
- );
-
-/**
- C callable function to chain an interrupt handler.
-
-**/
-VOID
-ChainHandler (
- VOID
- );
-
-/**
- C callable function to unchain an interrupt handler.
-
-**/
-VOID
-UnchainHandler (
- VOID
- );
-
-/**
- C callable function to enable/disable interrupts.
-
- @param NewInterruptState New Interrupt State.
-
- @return Previous state of psr.ic.
-
-**/
-UINT64
-ProgramInterruptFlags (
- IN UINT64 NewInterruptState
- );
-
-/**
- Flushes instruction cache for specified number of bytes.
-
- @param StartAddress Cache Start Address.
- @param SizeInBytes Cache Size.
-
-**/
-VOID
-InstructionCacheFlush (
- IN VOID *StartAddress,
- IN UINTN SizeInBytes
- );
-
-/**
- Returns the maximum value that may be used for the ProcessorIndex parameter in
- RegisterPeriodicCallback() and RegisterExceptionCallback().
-
- Hard coded to support only 1 processor for now.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param MaxProcessorIndex Pointer to a caller-allocated UINTN in which the maximum supported
- processor index is returned. Always 0 returned.
-
- @retval EFI_SUCCESS Always returned with **MaxProcessorIndex set to 0.
-
-**/
-EFI_STATUS
-EFIAPI
-GetMaximumProcessorIndex (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- OUT UINTN *MaxProcessorIndex
- );
-
-/**
- Registers a function to be called back periodically in interrupt context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param PeriodicCallback A pointer to a function of type PERIODIC_CALLBACK that is the main
- periodic entry point of the debug agent.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterPeriodicCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_PERIODIC_CALLBACK PeriodicCallback
- );
-
-/**
- Registers a function to be called when a given processor exception occurs.
-
- This code executes in boot services context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param ExceptionCallback A pointer to a function of type EXCEPTION_CALLBACK that is called
- when the processor exception specified by ExceptionType occurs.
- @param ExceptionType Specifies which processor exception to hook.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterExceptionCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_EXCEPTION_CALLBACK ExceptionCallback,
- IN EFI_EXCEPTION_TYPE ExceptionType
- );
-
-/**
- Invalidates processor instruction cache for a memory range. Subsequent execution in this range
- causes a fresh memory fetch to retrieve code to be executed.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor's instruction cache is to be invalidated.
- @param Start Specifies the physical base of the memory range to be invalidated.
- @param Length Specifies the minimum number of bytes in the processor's instruction
- cache to invalidate.
-
- @retval EFI_SUCCESS Always returned.
-
-**/
-EFI_STATUS
-EFIAPI
-InvalidateInstructionCache (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN VOID *Start,
- IN UINTN Length
- );
-
-/**
- C routine that is called for all registered exceptions. This is the main
- exception dispatcher.
-
- Must be public because it's referenced from AsmFuncs.s.
-
- @param ExceptionType Specifies which processor exception.
- @param Context System Context.
-**/
-VOID
-CommonHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN EFI_SYSTEM_CONTEXT Context
- );
-
-/**
- This is the worker function that uninstalls and removes all handlers.
-
- @param ExceptionType Specifies which processor exception.
- @param NewBundles New Boundles.
- @param NewCallback A pointer to the new function to be registered.
-
- @retval EFI_ALEADY_STARTED Ivt already hooked.
- @retval EFI_SUCCESS Successfully uninstalled.
-
-**/
-EFI_STATUS
-ManageIvtEntryTable (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN BUNDLE NewBundles[4],
- IN CALLBACK_FUNC NewCallback
- );
-
-/**
- Saves original IVT contents and inserts a few new bundles which are fixed up
- to store the ExceptionType and then call the common handler.
-
- @param ExceptionType Specifies which processor exception.
- @param NewBundles New Boundles.
- @param NewCallback A pointer to the new function to be hooked.
-
-**/
-VOID
-HookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN BUNDLE NewBundles[4],
- IN CALLBACK_FUNC NewCallback
- );
-
-/**
- Restores original IVT contents when unregistering a callback function.
-
- @param ExceptionType Specifies which processor exception.
-
-**/
-VOID
-UnhookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType
- );
-
-/**
- Sets up cache flush and calls assembly function to chain external interrupt.
-
- Records new callback in IvtEntryTable.
-
- @param NewCallback A pointer to the interrupt handle.
-
-**/
-VOID
-ChainExternalInterrupt (
- IN CALLBACK_FUNC NewCallback
- );
-
-/**
- Sets up cache flush and calls assembly function to restore external interrupt.
- Removes registered callback from IvtEntryTable.
-
-**/
-VOID
-UnchainExternalInterrupt (
- VOID
- );
-
-/**
- Given an integer number, return the physical address of the entry point in the IFT.
-
- @param HandlerIndex Index of the Handler
- @param EntryPoint IFT Entrypoint
-
-**/
-VOID
-GetHandlerEntryPoint (
- UINTN HandlerIndex,
- VOID **EntryPoint
- );
-
-#endif
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S b/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S deleted file mode 100644 index 7f0919ee1b..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 - 2011, 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
- movzxw 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
-
-
-
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.nasm b/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.nasm deleted file mode 100644 index 134842a68a..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.nasm +++ /dev/null @@ -1,587 +0,0 @@ -;/** @file
-; Low level x64 routines used by the debug support driver.
-;
-; Copyright (c) 2007 - 2016, 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.
-;
-;**/
-
-%define EXCPT64_DIVIDE_ERROR 0
-%define EXCPT64_DEBUG 1
-%define EXCPT64_NMI 2
-%define EXCPT64_BREAKPOINT 3
-%define EXCPT64_OVERFLOW 4
-%define EXCPT64_BOUND 5
-%define EXCPT64_INVALID_OPCODE 6
-%define EXCPT64_DOUBLE_FAULT 8
-%define EXCPT64_INVALID_TSS 10
-%define EXCPT64_SEG_NOT_PRESENT 11
-%define EXCPT64_STACK_FAULT 12
-%define EXCPT64_GP_FAULT 13
-%define EXCPT64_PAGE_FAULT 14
-%define EXCPT64_FP_ERROR 16
-%define EXCPT64_ALIGNMENT_CHECK 17
-%define EXCPT64_MACHINE_CHECK 18
-%define EXCPT64_SIMD 19
-
-%define FXSTOR_FLAG 0x1000000 ; 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]
-%macro FXSTOR_RDI 0
- db 0xf, 0xae, 00000111y ; mod = 00, reg/op = 000, r/m = 111 = [rdi]
-%endmacro
-
-;; fxrstor [rsi]
-%macro FXRSTOR_RSI 0
- db 0xf, 0xae, 00001110y ; mod = 00, reg/op = 001, r/m = 110 = [rsi]
-%endmacro
-
-SECTION .data
-
-global ASM_PFX(OrigVector)
-global ASM_PFX(InterruptEntryStub)
-global ASM_PFX(StubSize)
-global ASM_PFX(CommonIdtEntry)
-global ASM_PFX(FxStorSupport)
-extern ASM_PFX(InterruptDistrubutionHub)
-
-ASM_PFX(StubSize): dd InterruptEntryStubEnd - ASM_PFX(InterruptEntryStub)
-AppRsp: dq 0x1111111111111111 ; ?
-DebugRsp: dq 0x2222222222222222 ; ?
-ExtraPush: dq 0x3333333333333333 ; ?
-ExceptData: dq 0x4444444444444444 ; ?
-Rflags: dq 0x5555555555555555 ; ?
-ASM_PFX(OrigVector): dq 0x6666666666666666 ; ?
-
-;; 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
- times 0x1ffc dd 0x0 ;; 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 0 ;; first entry will be the vector number pushed by the stub
-
-DebugStackBegin: db "<<<< DbgStkBegin" ;; initial debug ESP == DebugStackBegin, set in stub
-
-DEFAULT REL
-SECTION .text
-
-;------------------------------------------------------------------------------
-; BOOLEAN
-; FxStorSupport (
-; void
-; )
-;
-; Abstract: Returns TRUE if FxStor instructions are supported
-;
-global ASM_PFX(FxStorSupport)
-ASM_PFX(FxStorSupport):
-
-;
-; cpuid corrupts rbx which must be preserved per the C calling convention
-;
- push rbx
- mov rax, dword 1
- cpuid
- mov eax, edx
- and rax, FXSTOR_FLAG
- shr rax, 24
- pop rbx
- ret
-
-;------------------------------------------------------------------------------
-; void
-; Vect2Desc (
-; IA32_IDT_GATE_DESCRIPTOR * DestDesc, // rcx
-; void (*Vector) (void) // rdx
-; )
-;
-; Abstract: Encodes an IDT descriptor with the given physical address
-;
-global ASM_PFX(Vect2Desc)
-ASM_PFX(Vect2Desc):
-
- mov rax, rdx
- mov word [rcx], ax ; write bits 15..0 of offset
- mov dx, cs
- mov word [rcx+2], dx ; SYS_CODE_SEL from GDT
- mov word [rcx+4], 0xe00 | 0x8000 ; type = 386 interrupt gate, present
- shr rax, 16
- mov word [rcx+6], ax ; write bits 31..16 of offset
- shr rax, 16
- mov dword [rcx+8], eax ; 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_PFX(InterruptEntryStub):
- push 0 ; push vector number - will be modified before installed
- db 0xe9 ; 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.
-;
-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 bit system context record
-
-;; NOTE: we save rsp here to prevent compiler put rip reference cause error AppRsp
- push rax
- mov rax, qword [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, 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 [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 qword [ExceptionNumber], EXCPT64_DOUBLE_FAULT
- jz ExtraPushOne
- cmp qword [ExceptionNumber], EXCPT64_INVALID_TSS
- jz ExtraPushOne
- cmp qword [ExceptionNumber], EXCPT64_SEG_NOT_PRESENT
- jz ExtraPushOne
- cmp qword [ExceptionNumber], EXCPT64_STACK_FAULT
- jz ExtraPushOne
- cmp qword [ExceptionNumber], EXCPT64_GP_FAULT
- jz ExtraPushOne
- cmp qword [ExceptionNumber], EXCPT64_PAGE_FAULT
- jz ExtraPushOne
- cmp qword [ExceptionNumber], EXCPT64_ALIGNMENT_CHECK
- jz ExtraPushOne
- mov qword [ExtraPush], 0
- mov qword [ExceptData], 0
- jmp ExtraPushDone
-ExtraPushOne:
- mov qword [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 qword [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 [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 [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 [rax]
-
-;; UINT64 Gdtr[2], Idtr[2];
- push 0
- push 0
- sidt [rsp]
- push 0
- push 0
- sgdt [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 [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, 0x208
- 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 ASM_PFX(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 [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 [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 [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 [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 qword [ExceptionNumber], 0x68
- 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, ~ 0x300 ; special handling for IF and TF
- push rbx
- mov rax, cs
- push rax
- mov rax, 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 [ASM_PFX(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
-
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/X64/PlDebugSupport.h b/MdeModulePkg/Universal/DebugSupportDxe/X64/PlDebugSupport.h deleted file mode 100644 index 044e5d9d07..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/X64/PlDebugSupport.h +++ /dev/null @@ -1,22 +0,0 @@ -/** @file
- X64 specific debug support macros.
-
-Copyright (c) 2006 - 2008, 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.
-
-**/
-
-#ifndef _PLDEBUG_SUPPORT_H_
-#define _PLDEBUG_SUPPORT_H_
-
-#include "Ia32/DebugSupport.h"
-
-#define EFI_ISA IsaX64
-
-#endif
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/X64/PlDebugSupportX64.c b/MdeModulePkg/Universal/DebugSupportDxe/X64/PlDebugSupportX64.c deleted file mode 100644 index fa8869d287..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/X64/PlDebugSupportX64.c +++ /dev/null @@ -1,146 +0,0 @@ -/** @file
- X64 specific functions to support Debug Support protocol.
-
-Copyright (c) 2008 - 2010, 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.
-
-**/
-
-#include "PlDebugSupport.h"
-
-IA32_IDT_GATE_DESCRIPTOR NullDesc = {{0,0}};
-
-/**
- Get Interrupt Handle from IDT Gate Descriptor.
-
- @param IdtGateDecriptor IDT Gate Descriptor.
-
- @return Interrupt Handle stored in IDT Gate Descriptor.
-
-**/
-UINTN
-GetInterruptHandleFromIdt (
- IN IA32_IDT_GATE_DESCRIPTOR *IdtGateDecriptor
- )
-{
- UINTN InterruptHandle;
-
- //
- // InterruptHandle 0-15 : OffsetLow
- // InterruptHandle 16-31 : OffsetHigh
- // InterruptHandle 32-63 : OffsetUpper
- //
- InterruptHandle = ((UINTN) IdtGateDecriptor->Bits.OffsetLow) |
- (((UINTN) IdtGateDecriptor->Bits.OffsetHigh) << 16) |
- (((UINTN) IdtGateDecriptor->Bits.OffsetUpper) << 32) ;
-
- return InterruptHandle;
-}
-
-/**
- Allocate pool for a new IDT entry stub.
-
- Copy the generic stub into the new buffer and fixup the vector number
- and jump target address.
-
- @param ExceptionType This is the exception type that the new stub will be created
- for.
- @param Stub On successful exit, *Stub contains the newly allocated entry stub.
-
-**/
-VOID
-CreateEntryStub (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- OUT VOID **Stub
- )
-{
- UINT8 *StubCopy;
-
- StubCopy = *Stub;
-
- //
- // Fixup the stub code for this vector
- //
-
- // The stub code looks like this:
- //
- // 00000000 6A 00 push 0 ; push vector number - will be modified before installed
- // 00000002 E9 db 0e9h ; jump rel32
- // 00000003 00000000 dd 0 ; fixed up to relative address of CommonIdtEntry
- //
-
- //
- // poke in the exception type so the second push pushes the exception type
- //
- StubCopy[0x1] = (UINT8) ExceptionType;
-
- //
- // fixup the jump target to point to the common entry
- //
- *(UINT32 *) &StubCopy[0x3] = (UINT32)((UINTN) CommonIdtEntry - (UINTN) &StubCopy[StubSize]);
-
- return;
-}
-
-/**
- This is the main worker function that manages the state of the interrupt
- handlers. It both installs and uninstalls interrupt handlers based on the
- value of NewCallback. If NewCallback is NULL, then uninstall is indicated.
- If NewCallback is non-NULL, then install is indicated.
-
- @param NewCallback If non-NULL, NewCallback specifies the new handler to register.
- If NULL, specifies that the previously registered handler should
- be uninstalled.
- @param ExceptionType Indicates which entry to manage.
-
- @retval EFI_SUCCESS Process is ok.
- @retval EFI_INVALID_PARAMETER Requested uninstalling a handler from a vector that has
- no handler registered for it
- @retval EFI_ALREADY_STARTED Requested install to a vector that already has a handler registered.
- @retval others Possible return values are passed through from UnHookEntry and HookEntry.
-
-**/
-EFI_STATUS
-ManageIdtEntryTable (
- CALLBACK_FUNC NewCallback,
- EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- EFI_STATUS Status;
-
- Status = EFI_SUCCESS;
-
- if (CompareMem (&IdtEntryTable[ExceptionType].NewDesc, &NullDesc, sizeof (IA32_IDT_GATE_DESCRIPTOR)) != 0) {
- //
- // we've already installed to this vector
- //
- if (NewCallback != NULL) {
- //
- // if the input handler is non-null, error
- //
- Status = EFI_ALREADY_STARTED;
- } else {
- UnhookEntry (ExceptionType);
- }
- } else {
- //
- // no user handler installed on this vector
- //
- if (NewCallback == NULL) {
- //
- // if the input handler is null, error
- //
- Status = EFI_INVALID_PARAMETER;
- } else {
- HookEntry (ExceptionType, NewCallback);
- }
- }
-
- return Status;
-}
|