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Add X64 support for DebugSupport driver. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2067 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
klu2 2006-12-07 08:31:19 +00:00
parent b2b5e78fbb
commit 5fd59c656c
10 changed files with 2051 additions and 217 deletions
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162
EdkModulePkg/EdkModulePkg.fpd
View File

@ -2041,6 +2041,168 @@
<FfsFormatKey>BS_DRIVER</FfsFormatKey>
</ModuleSaBuildOptions>
</ModuleSA>
<ModuleSA SupArchList="X64" PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d" ModuleGuid="911D584C-35F7-4955-BEF9-B452769DDC3A">
<Libraries>
<Instance ModuleGuid="ff5c7a2c-ab7a-4366-8616-11c6e53247b6" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="27d67720-ea68-48ae-93da-a3a074c90e30" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="f1bbe03d-2f28-4dee-bec7-d98d7a30c36a" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="331deb15-454b-48d8-9b74-70d01f3f3556" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="3ddc3b12-99ea-4364-b315-6310a2050be5" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="bda39d3a-451b-4350-8266-81ab10fa0523" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="4674739d-3195-4fb2-8094-ac1d22d00194" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
</Libraries>
<PcdBuildDefinition>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdMaximumUnicodeStringLength</C_Name>
<Token>0x00000001</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>1000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdMaximumAsciiStringLength</C_Name>
<Token>0x00000002</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>1000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdMaximumLinkedListLength</C_Name>
<Token>0x00000003</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>1000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdSpinLockTimeout</C_Name>
<Token>0x00000004</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>10000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdReportStatusCodePropertyMask</C_Name>
<Token>0x00000007</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT8</DatumType>
<MaxDatumSize>1</MaxDatumSize>
<Value>0x06</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdDebugPropertyMask</C_Name>
<Token>0x00000005</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT8</DatumType>
<MaxDatumSize>1</MaxDatumSize>
<Value>0x0f</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdDebugClearMemoryValue</C_Name>
<Token>0x00000008</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT8</DatumType>
<MaxDatumSize>1</MaxDatumSize>
<Value>0xAF</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdDebugPrintErrorLevel</C_Name>
<Token>0x00000006</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>0x80000000</Value>
</PcdData>
</PcdBuildDefinition>
<ModuleSaBuildOptions>
<FvBinding>NULL</FvBinding>
<FfsFormatKey>BS_DRIVER</FfsFormatKey>
</ModuleSaBuildOptions>
</ModuleSA>
<ModuleSA SupArchList="IPF" PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d" ModuleGuid="911D584C-35F7-4955-BEF9-B452769DDC3A">
<Libraries>
<Instance ModuleGuid="ff5c7a2c-ab7a-4366-8616-11c6e53247b6" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="27d67720-ea68-48ae-93da-a3a074c90e30" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="f1bbe03d-2f28-4dee-bec7-d98d7a30c36a" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="331deb15-454b-48d8-9b74-70d01f3f3556" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="3ddc3b12-99ea-4364-b315-6310a2050be5" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="bda39d3a-451b-4350-8266-81ab10fa0523" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
<Instance ModuleGuid="4674739d-3195-4fb2-8094-ac1d22d00194" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
</Libraries>
<PcdBuildDefinition>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdMaximumUnicodeStringLength</C_Name>
<Token>0x00000001</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>1000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdMaximumAsciiStringLength</C_Name>
<Token>0x00000002</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>1000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdMaximumLinkedListLength</C_Name>
<Token>0x00000003</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>1000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdSpinLockTimeout</C_Name>
<Token>0x00000004</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>10000000</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdReportStatusCodePropertyMask</C_Name>
<Token>0x00000007</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT8</DatumType>
<MaxDatumSize>1</MaxDatumSize>
<Value>0x06</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdDebugPropertyMask</C_Name>
<Token>0x00000005</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT8</DatumType>
<MaxDatumSize>1</MaxDatumSize>
<Value>0x0f</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdDebugClearMemoryValue</C_Name>
<Token>0x00000008</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT8</DatumType>
<MaxDatumSize>1</MaxDatumSize>
<Value>0xAF</Value>
</PcdData>
<PcdData ItemType="FIXED_AT_BUILD">
<C_Name>PcdDebugPrintErrorLevel</C_Name>
<Token>0x00000006</Token>
<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
<DatumType>UINT32</DatumType>
<MaxDatumSize>4</MaxDatumSize>
<Value>0x80000000</Value>
</PcdData>
</PcdBuildDefinition>
<ModuleSaBuildOptions>
<FvBinding>NULL</FvBinding>
<FfsFormatKey>BS_DRIVER</FfsFormatKey>
</ModuleSaBuildOptions>
</ModuleSA>
<ModuleSA SupArchList="IA32" PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d" ModuleGuid="9E863906-A40F-4875-977F-5B93FF237FC6">
<Libraries>
<Instance ModuleGuid="ff5c7a2c-ab7a-4366-8616-11c6e53247b6" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>

9
EdkModulePkg/Universal/DebugSupport/Dxe/DebugSupport.msa
View File

@ -1,5 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0">
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<MsaHeader>
<ModuleName>DebugSupport</ModuleName>
<ModuleType>DXE_DRIVER</ModuleType>
@ -37,6 +37,9 @@
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiBootServicesTableLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED" SupArchList="IA32 X64 IPF EBC">
<Keyword>BaseLib</Keyword>
</LibraryClass>
</LibraryClassDefinitions>
<SourceFiles>
<Filename>DebugSupport.c</Filename>
@ -49,6 +52,10 @@
<Filename SupArchList="IPF">ipf/common.i</Filename>
<Filename SupArchList="IPF">ipf/ds64macros.i</Filename>
<Filename SupArchList="IPF">ipf/plDebugSupport.c</Filename>
<Filename SupArchList="IPF">ipf/plDebugSupport.h</Filename>
<Filename SupArchList="X64">x64/AsmFuncs.asm</Filename>
<Filename SupArchList="X64">x64/plDebugSupport.h</Filename>
<Filename SupArchList="X64">x64/plDebugSupport.c</Filename>
</SourceFiles>
<PackageDependencies>
<Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>

30
EdkModulePkg/Universal/DebugSupport/Dxe/Ia32/AsmFuncs.asm
View File

@ -80,14 +80,14 @@ OrigVector dd 66666666h ; ?
;; For reference, the context structure looks like this:
;; struct {
;; UINT32 ExceptionData;
;; FX_SAVE_STATE FxSaveState; // 512 bytes, must be 16 byte aligned
;; 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 Ldtr, Tr;
;; UINT64 Gdtr, Idtr;
;; UINT32 EFlags;
;; UINT32 Ldtr, Tr;
;; UINT32 Gdtr[2], Idtr[2];
;; UINT32 Eip;
;; UINT32 SegGs, SegFs, SegEs, SegDs, SegCs, SegSs;
;; UINT32 Gs, Fs, Es, Ds, Cs, Ss;
;; UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
;; } SYSTEM_CONTEXT_IA32; // 32 bit system context record
@ -252,14 +252,14 @@ CommonIdtEntry::
;; typedef
;; struct {
;; UINT32 ExceptionData;
;; FX_SAVE_STATE FxSaveState;
;; FX_SAVE_STATE_IA32 FxSaveState;
;; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
;; UINT32 Cr0, Cr2, Cr3, Cr4;
;; UINT32 Ldtr, Tr;
;; UINT64 Gdtr, Idtr;
;; UINT32 EFlags;
;; UINT32 Ldtr, Tr;
;; UINT32 Gdtr[2], Idtr[2];
;; UINT32 Eip;
;; UINT32 SegGs, SegFs, SegEs, SegDs, SegCs, SegSs;
;; UINT32 Gs, Fs, Es, Ds, Cs, Ss;
;; UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
;; } SYSTEM_CONTEXT_IA32; // 32 bit system context record
@ -340,7 +340,7 @@ CommonIdtEntry::
mov eax, AppEsp
push dword ptr [eax]
;; UINT64 Gdtr, Idtr;
;; UINT32 Gdtr[2], Idtr[2];
push 0
push 0
sidt fword ptr [esp]
@ -397,7 +397,7 @@ CommonIdtEntry::
mov eax, dr0
push eax
;; FX_SAVE_STATE FxSaveState;
;; FX_SAVE_STATE_IA32 FxSaveState;
sub esp, 512
mov edi, esp
; IMPORTANT!! The debug stack has been carefully constructed to
@ -422,7 +422,7 @@ CommonIdtEntry::
;; UINT32 ExceptionData;
add esp, 4
;; FX_SAVE_STATE FxSaveState;
;; FX_SAVE_STATE_IA32 FxSaveState;
mov esi, esp
FXRSTOR_ESI
add esp, 512
@ -456,8 +456,8 @@ CommonIdtEntry::
mov eax, AppEsp
pop dword ptr [eax + 8]
;; UINT16 Ldtr, Tr;
;; UINT64 Gdtr, Idtr;
;; UINT32 Ldtr, Tr;
;; UINT32 Gdtr[2], Idtr[2];
;; Best not let anyone mess with these particular registers...
add esp, 24
@ -478,7 +478,7 @@ CommonIdtEntry::
pop ss
;; The next stuff to restore is the general purpose registers that were pushed
;; using the pushad instruction.
;; 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
@ -505,7 +505,7 @@ CommonIdtEntry::
mov AppEsp, eax
NoAppStackMove:
mov eax, DebugEsp ; restore the DebugEsp on the debug stack
; so our popad will not cause a stack switch
; so our "popad" will not cause a stack switch
mov [esp + 12], eax
cmp ExceptionNumber, 068h

77
EdkModulePkg/Universal/DebugSupport/Dxe/Ia32/plDebugSupport.c
View File

@ -1,6 +1,7 @@
/*++
/**@file
IA32 specific debug support functions
Copyright (c) 2006, Intel Corporation
Copyright (c) 2006 Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -9,17 +10,7 @@ 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:
plDebugSupport.c
Abstract:
IA32 specific debug support functions
Revision History
--*/
**/
//
// private header files
@ -117,7 +108,6 @@ Returns:
Other possibilities are passed through by CreateEntryStub
--*/
// TODO: ) - add argument and description to function comment
{
BOOLEAN OldIntFlagState;
EFI_STATUS Status;
@ -199,7 +189,6 @@ Returns:
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
// TODO: ) - add argument and description to function comment
{
EFI_STATUS Status;
@ -246,12 +235,13 @@ GetMaximumProcessorIndex (
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
MaxProcessorIndex - The maximuim supported processor index
Returns: Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
Returns:
Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
--*/
// TODO: This - add argument and description to function comment
// TODO: MaxProcessorIndex - add argument and description to function comment
{
*MaxProcessorIndex = 0;
return (EFI_SUCCESS);
@ -269,13 +259,20 @@ RegisterPeriodicCallback (
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
PeriodicCallback - Callback function
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
// TODO: This - add argument and description to function comment
// TODO: ProcessorIndex - add argument and description to function comment
// TODO: PeriodicCallback - add argument and description to function comment
{
return ManageIdtEntryTable (PeriodicCallback, SYSTEM_TIMER_VECTOR);
}
@ -296,16 +293,21 @@ Routine Description:
This code executes in boot services context.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
NewCallback - Callback function
ExceptionType - Which exception to hook
Returns:
None
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
// TODO: This - add argument and description to function comment
// TODO: ProcessorIndex - add argument and description to function comment
// TODO: NewCallback - add argument and description to function comment
// TODO: ExceptionType - add argument and description to function comment
{
return ManageIdtEntryTable (NewCallback, ExceptionType);
}
@ -322,21 +324,21 @@ InvalidateInstructionCache (
Routine Description:
This is a DebugSupport protocol member function.
For IA32, this is a no-op since the instruction and data caches are coherent.
Calls assembly routine to flush cache.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
Start - Physical base of the memory range to be invalidated
Length - mininum number of bytes in instruction cache to invalidate
Returns:
None
EFI_SUCCESS - always return success
--*/
// TODO: This - add argument and description to function comment
// TODO: ProcessorIndex - add argument and description to function comment
// TODO: Start - add argument and description to function comment
// TODO: Length - add argument and description to function comment
// TODO: EFI_SUCCESS - add return value to function comment
{
AsmWbinvd ();
return EFI_SUCCESS;
}
@ -358,9 +360,9 @@ Returns:
EFI_SUCCESS
EFI_UNSUPPORTED - if IA32 processor does not support FXSTOR/FXRSTOR instructions,
the context save will fail, so these processor's are not supported.
EFI_OUT_OF_RESOURCES - not resource to finish initialization
--*/
// TODO: EFI_OUT_OF_RESOURCES - add return value to function comment
{
if (!FxStorSupport ()) {
return EFI_UNSUPPORTED;
@ -393,10 +395,9 @@ Arguments:
Returns:
None
EFI_SUCCESS - always return success
--*/
// TODO: EFI_SUCCESS - add return value to function comment
{
EFI_EXCEPTION_TYPE ExceptionType;
@ -420,14 +421,14 @@ Routine Description: Common piece of code that invokes the registered handlers.
This code executes in exception context so no efi calls are allowed.
Arguments:
ExceptionType - exception type
ContextRecord - system context
Returns:
None
--*/
// TODO: ExceptionType - add argument and description to function comment
// TODO: ContextRecord - add argument and description to function comment
{
if (IdtEntryTable[ExceptionType].RegisteredCallback != NULL) {
if (ExceptionType != SYSTEM_TIMER_VECTOR) {

128
EdkModulePkg/Universal/DebugSupport/Dxe/Ia32/plDebugSupport.h
View File

@ -1,4 +1,5 @@
/*++
/**@file
IA32 specific debug support macros, typedefs and prototypes.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
@ -9,17 +10,7 @@ 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:
plDebugSupport.h
Abstract:
IA32 specific debug support macros, typedefs and prototypes.
Revision History
--*/
**/
#ifndef _PLDEBUG_SUPPORT_H
#define _PLDEBUG_SUPPORT_H
@ -58,7 +49,7 @@ CommonIdtEntry (
Routine Description:
TODO: Add function description
Generic IDT entry
Arguments:
@ -66,11 +57,12 @@ Arguments:
Returns:
TODO: add return values
None
--*/
;
BOOLEAN
FxStorSupport (
VOID
@ -79,7 +71,7 @@ FxStorSupport (
Routine Description:
TODO: Add function description
Check whether FXSTOR is supported
Arguments:
@ -87,7 +79,8 @@ Arguments:
Returns:
TODO: add return values
TRUE - supported
FALSE - not supported
--*/
;
@ -100,7 +93,7 @@ GetIdtr (
Routine Description:
TODO: Add function description
Return the physical address of IDTR
Arguments:
@ -108,7 +101,7 @@ Arguments:
Returns:
TODO: add return values
The physical address of IDTR
--*/
;
@ -122,16 +115,16 @@ Vect2Desc (
Routine Description:
TODO: Add function description
Encodes an IDT descriptor with the given physical address
Arguments:
DestDesc - TODO: add argument description
) - TODO: add argument description
DestDesc - The IDT descriptor address
Vector - The interrupt vector entry
Returns:
TODO: add return values
None
--*/
;
@ -144,15 +137,16 @@ WriteInterruptFlag (
Routine Description:
TODO: Add function description
Programs interrupt flag to the requested state and returns previous
state.
Arguments:
NewState - TODO: add argument description
NewState - New interrupt status
Returns:
TODO: add return values
Old interrupt status
--*/
;
@ -164,16 +158,18 @@ plInitializeDebugSupportDriver (
/*++
Routine Description:
Initializes driver's handler registration database.
TODO: Add function description
This code executes in boot services context.
Arguments:
None
Returns:
TODO: add return values
EFI_SUCCESS
EFI_UNSUPPORTED - if IA32 processor does not support FXSTOR/FXRSTOR instructions,
the context save will fail, so these processor's are not supported.
EFI_OUT_OF_RESOURCES - not resource to finish initialization
--*/
;
@ -186,16 +182,18 @@ plUnloadDebugSupportDriver (
/*++
Routine Description:
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.
TODO: Add function description
This code executes in boot services context.
Arguments:
ImageHandle - TODO: add argument description
ImageHandle - The image handle of the unload handler
Returns:
TODO: add return values
EFI_SUCCESS - always return success
--*/
;
@ -211,18 +209,14 @@ GetMaximumProcessorIndex (
)
/*++
Routine Description:
TODO: Add function description
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - TODO: add argument description
MaxProcessorIndex - TODO: add argument description
This - The DebugSupport instance
MaxProcessorIndex - The maximuim supported processor index
Returns:
TODO: add return values
Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
--*/
;
@ -236,19 +230,21 @@ RegisterPeriodicCallback (
)
/*++
Routine Description:
TODO: Add function description
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - TODO: add argument description
ProcessorIndex - TODO: add argument description
PeriodicCallback - TODO: add argument description
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
PeriodicCallback - Callback function
Returns:
TODO: add return values
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
;
@ -264,19 +260,24 @@ RegisterExceptionCallback (
/*++
Routine Description:
This is a DebugSupport protocol member function.
TODO: Add function description
This code executes in boot services context.
Arguments:
This - TODO: add argument description
ProcessorIndex - TODO: add argument description
NewCallback - TODO: add argument description
ExceptionType - TODO: add argument description
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
NewCallback - Callback function
ExceptionType - Which exception to hook
Returns:
TODO: add return values
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
;
@ -292,19 +293,18 @@ InvalidateInstructionCache (
/*++
Routine Description:
TODO: Add function description
This is a DebugSupport protocol member function.
Calls assembly routine to flush cache.
Arguments:
This - TODO: add argument description
ProcessorIndex - TODO: add argument description
Start - TODO: add argument description
Length - TODO: add argument description
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
Start - Physical base of the memory range to be invalidated
Length - mininum number of bytes in instruction cache to invalidate
Returns:
TODO: add return values
EFI_SUCCESS - always return success
--*/
;

112
EdkModulePkg/Universal/DebugSupport/Dxe/ipf/plDebugSupport.c
View File

@ -1,4 +1,5 @@
/*++
/**@file
IPF specific debug support functions
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
@ -9,32 +10,7 @@ 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:
PlDebugSupport.c
Abstract:
IPF specific debug support functions
Revision History
--*/
//
// Master EFI header file
//
#include "Tiano.h"
//
// Common library header files
//
#include "EfiDriverLib.h"
//
// Produced protocols
//
#include EFI_PROTOCOL_DEFINITION (DebugSupport)
**/
//
// private header files
@ -148,14 +124,13 @@ Routine Description:
used by the driver. Must be public because it's referenced from DebugSuport.c
Arguments:
IN EFI_HANDLE ImageHandle
ImageHandle - Image handle
Returns:
EFI_STATUS - anything other than EFI_SUCCESS indicates the callback was not registered.
--*/
// TODO: ImageHandle - add argument and description to function comment
{
EFI_EXCEPTION_TYPE ExceptionType;
@ -178,22 +153,20 @@ Routine Description:
exception dispatcher. Must be public because it's referenced from AsmFuncs.s.
Arguments:
IN EFI_EXCEPTION_TYPE ExceptionType,
IN EFI_SYSTEM_CONTEXT Context
ExceptionType - Exception Type
Context - System Context
Returns:
Nothing
--*/
// TODO: ExceptionType - add argument and description to function comment
// TODO: Context - add argument and description to function comment
{
static BOOLEAN InHandler = FALSE;
DEBUG_CODE_BEGIN ();
if (InHandler) {
EfiDebugPrint (EFI_D_GENERIC, "ERROR: Re-entered debugger!\n"
DEBUG ((EFI_D_INFO, "ERROR: Re-entered debugger!\n"
" ExceptionType == %X\n"
" Context == %X\n"
" Context.SystemContextIpf->CrIip == %X\n"
@ -203,7 +176,7 @@ Returns:
Context,
Context.SystemContextIpf->CrIip,
Context.SystemContextIpf->CrIpsr,
InHandler);
InHandler));
}
DEBUG_CODE_END ();
@ -234,16 +207,14 @@ Routine Description:
Given an integer number, return the physical address of the entry point in the IFT
Arguments:
UINTN HandlerIndex,
VOID ** EntryPoint
HandlerIndex - Index of the Handler
EntryPoint - IFT Entrypoint
Returns:
Nothing
--*/
// TODO: HandlerIndex - add argument and description to function comment
// TODO: EntryPoint - add argument and description to function comment
{
UINT8 *TempPtr;
@ -280,20 +251,17 @@ Routine Description:
This is the worker function that installs and removes all handlers
Arguments:
IN EFI_EXCEPTION_TYPE ExceptionType,
IN BUNDLE NewBundles[NUM_BUNDLES_IN_STUB],
IN VOID (*NewCallback) ()
ExceptionType - Exception Type
NewBundles - New Boundles
NewCallback - New Callback
Returns:
EFI_STATUS - any return other than EFI_SUCCESS indicates the request was not
satisfied.
EFI_ALEADY_STARTED - Ivt already hooked.
--*/
// TODO: ExceptionType - add argument and description to function comment
// TODO: ] - add argument and description to function comment
// TODO: ) - add argument and description to function comment
// TODO: EFI_ALREADY_STARTED - add return value to function comment
{
BUNDLE *B0Ptr;
UINT64 InterruptFlags;
@ -367,18 +335,15 @@ Routine Description:
to store the ExceptionType and then call the common handler.
Arguments:
IN EFI_EXCEPTION_TYPE ExceptionType,
IN BUNDLE NewBundles[4],
IN VOID (*NewCallback) ()
ExceptionType - Exception Type
NewBundles - New Boundles
NewCallback - New Callback
Returns:
Nothing
--*/
// TODO: ExceptionType - add argument and description to function comment
// TODO: ] - add argument and description to function comment
// TODO: ) - add argument and description to function comment
{
BUNDLE *FixupBundle;
BUNDLE *B0Ptr;
@ -422,14 +387,15 @@ Routine Description:
Restores original IVT contents when unregistering a callback function
Arguments:
IN EFI_EXCEPTION_TYPE ExceptionType,
ExceptionType - Exception Type
NewBundles - New Boundles
NewCallback - New Callback
Returns:
Nothing
--*/
// TODO: ExceptionType - add argument and description to function comment
{
BUNDLE *B0Ptr;
@ -460,14 +426,13 @@ Routine Description:
Records new callback in IvtEntryTable.
Arguments:
IN VOID (*NewCallback) ()
NewCallback - New Callback
Returns:
Nothing
--*/
// TODO: ) - add argument and description to function comment
{
VOID *Start;
@ -522,12 +487,13 @@ Routine Description: This is a DebugSupport protocol member function. Hard
coded to support only 1 processor for now.
Arguments:
This - The DebugSupport instance
MaxProcessorIndex - The maximuim supported processor index
Returns: Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
Returns:
Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
--*/
// TODO: This - add argument and description to function comment
// TODO: MaxProcessorIndex - add argument and description to function comment
{
*MaxProcessorIndex = 0;
return (EFI_SUCCESS);
@ -546,18 +512,15 @@ Routine Description:
DebugSupport protocol member function
Arguments:
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK NewPeriodicCallback
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
PeriodicCallback - Callback function
Returns:
EFI_STATUS - anything other than EFI_SUCCESS indicates the callback was not registered.
--*/
// TODO: This - add argument and description to function comment
// TODO: ProcessorIndex - add argument and description to function comment
// TODO: NewPeriodicCallback - add argument and description to function comment
{
return ManageIvtEntryTable (EXCEPT_IPF_EXTERNAL_INTERRUPT, NULL, NewPeriodicCallback);
}
@ -576,19 +539,16 @@ Routine Description:
DebugSupport protocol member function
Arguments:
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN EFI_EXCEPTION_CALLBACK NewCallback,
IN EFI_EXCEPTION_TYPE ExceptionType
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
NewCallback - Callback function
ExceptionType - Which exception to hook
Returns:
EFI_STATUS - anything other than EFI_SUCCESS indicates the callback was not registered.
--*/
// TODO: This - add argument and description to function comment
// TODO: ProcessorIndex - add argument and description to function comment
// TODO: NewCallback - add argument and description to function comment
// TODO: ExceptionType - add argument and description to function comment
{
return ManageIvtEntryTable (
ExceptionType,
@ -611,15 +571,15 @@ Routine Description:
DebugSupport protocol member function. Calls assembly routine to flush cache.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
Start - Physical base of the memory range to be invalidated
Length - mininum number of bytes in instruction cache to invalidate
Returns:
EFI_SUCCESS
--*/
// TODO: This - add argument and description to function comment
// TODO: ProcessorIndex - add argument and description to function comment
// TODO: Start - add argument and description to function comment
// TODO: Length - add argument and description to function comment
{
InstructionCacheFlush (Start, Length);
return (EFI_SUCCESS);

297
EdkModulePkg/Universal/DebugSupport/Dxe/ipf/plDebugSupport.h Normal file
View File

@ -0,0 +1,297 @@
/**@file
IPF specific debugsupport types, macros, and definitions.
Copyright (c) 2004 - 2006 Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _PLDEBUG_SUPPORT_H
#define _PLDEBUG_SUPPORT_H
#define DISABLE_INTERRUPTS 0UL
//
// The remaining definitions comprise the protocol members.
//
#define EFI_ISA IsaIpf
//
// processor specific functions that must be public
//
EFI_STATUS
plInitializeDebugSupportDriver (
VOID
)
/*++
Routine Description:
IPF specific DebugSupport driver initialization. Must be public because it's
referenced from DebugSupport.c
Arguments:
Returns:
EFI_SUCCESS
--*/
;
EFI_STATUS
EFIAPI
plUnloadDebugSupportDriver (
IN EFI_HANDLE ImageHandle
)
/*++
Routine Description:
Unload handler that is called during UnloadImage() - deallocates pool memory
used by the driver. Must be public because it's referenced from DebugSuport.c
Arguments:
ImageHandle - Image handle
Returns:
EFI_STATUS - anything other than EFI_SUCCESS indicates the callback was not registered.
--*/
;
//
// Assembly worker functions and data referenced from plDebugSupport.c
//
VOID *
GetIva (
VOID
)
/*++
Routine Description:
C callable function to obtain the current value of IVA
Arguments:
None
Returns:
Current value if IVA
--*/
;
VOID
HookStub (
VOID
)
/*++
Routine Description:
HookStub will be copied from it's loaded location into the IVT when
an IVT entry is hooked.
Arguments:
None
Returns:
None
--*/
;
VOID
ChainHandler (
VOID
)
/*++
Routine Description:
Chains an interrupt handler
Arguments:
None
Returns:
None
--*/
;
VOID
UnchainHandler (
VOID
)
/*++
Routine Description:
Unchains an interrupt handler
Arguments:
None
Returns:
None
--*/
;
UINT64
ProgramInterruptFlags (
IN UINT64 NewInterruptState
)
/*++
Routine Description:
C callable function to enable/disable interrupts
Arguments:
NewInterruptState - New Interrupt State
Returns:
Previous state of psr.ic
--*/
;
VOID
InstructionCacheFlush (
IN VOID *StartAddress,
IN UINTN SizeInBytes
)
/*++
Routine Description:
Flushes instruction cache for specified number of bytes
Arguments:
StartAddress - Cache Start Address
SizeInBytes - Cache Size
Returns:
None
--*/
;
EFI_STATUS
EFIAPI
GetMaximumProcessorIndex (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
OUT UINTN *MaxProcessorIndex
)
/*++
Routine Description: This is a DebugSupport protocol member function. Hard
coded to support only 1 processor for now.
Arguments:
This - The DebugSupport instance
MaxProcessorIndex - The maximuim supported processor index
Returns:
Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
--*/
;
EFI_STATUS
EFIAPI
RegisterPeriodicCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK PeriodicCallback
)
/*++
Routine Description:
DebugSupport protocol member function
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
PeriodicCallback - Callback function
Returns:
EFI_STATUS - anything other than EFI_SUCCESS indicates the callback was not registered.
--*/
;
EFI_STATUS
EFIAPI
RegisterExceptionCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_EXCEPTION_CALLBACK NewHandler,
IN EFI_EXCEPTION_TYPE ExceptionType
)
/*++
Routine Description:
DebugSupport protocol member function
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
NewCallback - Callback function
ExceptionType - Which exception to hook
Returns:
EFI_STATUS - anything other than EFI_SUCCESS indicates the callback was not registered.
--*/
;
EFI_STATUS
EFIAPI
InvalidateInstructionCache (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN VOID *Start,
IN UINTN Length
)
/*++
Routine Description:
DebugSupport protocol member function. Calls assembly routine to flush cache.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
Start - Physical base of the memory range to be invalidated
Length - mininum number of bytes in instruction cache to invalidate
Returns:
EFI_SUCCESS
--*/
;
#endif

655
EdkModulePkg/Universal/DebugSupport/Dxe/x64/AsmFuncs.asm Normal file
View File

@ -0,0 +1,655 @@
;******************************************************************************
;*
;* Copyright (c) 2006, Intel Corporation
;* All rights reserved. This program and the accompanying materials
;* are licensed and made available under the terms and conditions of the BSD License
;* which accompanies this distribution. The full text of the license may be found at
;* http://opensource.org/licenses/bsd-license.php
;*
;* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
;* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
;*
;******************************************************************************
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
;------------------------------------------------------------------------------
; VOID
; EfiWbinvd (
; VOID
; )
;
; Abstract: Writeback and invalidate cache
;
EfiWbinvd PROC PUBLIC
wbinvd
ret
EfiWbinvd ENDP
;------------------------------------------------------------------------------
; 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
;------------------------------------------------------------------------------
; DESCRIPTOR *
; GetIdtr (
; void
; )
;
; Abstract: Returns physical address of IDTR
;
GetIdtr PROC PUBLIC
push rbp
mov rbp, rsp
sub rsp, 8h
sidt QWORD PTR [rbp - 6]
mov rax, QWORD PTR [rbp - 4]
mov rsp, rbp
pop rbp
ret
GetIdtr ENDP
;------------------------------------------------------------------------------
; BOOLEAN
; WriteInterruptFlag (
; BOOLEAN NewState // rcx
; )
;
; Abstract: Programs interrupt flag to the requested state and returns previous
; state.
;
WriteInterruptFlag PROC PUBLIC
pushfq
pop rax
and rax, 200h
shr rax, 9
cmp rcx, 0
jnz EnableIF
cli
ret
EnableIF:
sti
ret
WriteInterruptFlag ENDP
;------------------------------------------------------------------------------
; void
; Vect2Desc (
; 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
add rax, 40
; application stack has ss, rsp, rflags, cs, & rip, so
; last actual application stack entry is
; 40 bytes into the application stack.
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
;; 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
add rax, 40
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

437
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/**@file
X64 specific debug support functions
Copyright (c) 2006 Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
//
// private header files
//
#include "plDebugSupport.h"
//
// This the global main table to keep track of the interrupts
//
IDT_ENTRY *IdtEntryTable = NULL;
DESCRIPTOR NullDesc = {0, 0};
STATIC
EFI_STATUS
CreateEntryStub (
IN EFI_EXCEPTION_TYPE ExceptionType,
OUT VOID **Stub
)
/*++
Routine Description: 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.
Arguments:
ExceptionType - This is the exception type that the new stub will be created
for.
Stub - On successful exit, *Stub contains the newly allocated entry stub.
Returns:
Typically EFI_SUCCESS
other possibilities are passed through from AllocatePool
--*/
{
EFI_STATUS Status;
UINT8 *StubCopy;
//
// First, allocate a new buffer and copy the stub code into it
//
Status = gBS->AllocatePool (EfiBootServicesData, StubSize, Stub);
if (Status == EFI_SUCCESS) {
StubCopy = *Stub;
gBS->CopyMem (StubCopy, InterruptEntryStub, StubSize);
//
// Next 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 Status;
}
STATIC
EFI_STATUS
HookEntry (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN VOID (*NewCallback) ()
)
/*++
Routine Description:
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.
Arguments:
ExceptionType - specifies which vector to hook.
NewCallback - a pointer to the new function to be registered.
Returns:
EFI_SUCCESS
Other possibilities are passed through by CreateEntryStub
--*/
{
BOOLEAN OldIntFlagState;
EFI_STATUS Status;
Status = CreateEntryStub (ExceptionType, (VOID **) &IdtEntryTable[ExceptionType].StubEntry);
if (Status == EFI_SUCCESS) {
OldIntFlagState = WriteInterruptFlag (0);
ReadIdt (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));
((UINT16 *) &IdtEntryTable[ExceptionType].OrigVector)[0] = ((UINT16 *) &IdtEntryTable[ExceptionType].OrigDesc.Low)[0];
((UINT16 *) &IdtEntryTable[ExceptionType].OrigVector)[1] = ((UINT16 *) &IdtEntryTable[ExceptionType].OrigDesc.Low)[3];
((UINT32 *) &IdtEntryTable[ExceptionType].OrigVector)[1] = ((UINT32 *) &IdtEntryTable[ExceptionType].OrigDesc.High)[0];
Vect2Desc (&IdtEntryTable[ExceptionType].NewDesc, IdtEntryTable[ExceptionType].StubEntry);
IdtEntryTable[ExceptionType].RegisteredCallback = NewCallback;
WriteIdt (ExceptionType, &(IdtEntryTable[ExceptionType].NewDesc));
WriteInterruptFlag (OldIntFlagState);
}
return Status;
}
STATIC
EFI_STATUS
UnhookEntry (
IN EFI_EXCEPTION_TYPE ExceptionType
)
/*++
Routine Description:
Undoes HookEntry. This code executes in boot services context.
Arguments:
ExceptionType - specifies which entry to unhook
Returns:
EFI_SUCCESS
Other values are passed through from FreePool
--*/
{
BOOLEAN OldIntFlagState;
EFI_STATUS Status;
OldIntFlagState = WriteInterruptFlag (0);
WriteIdt (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));
Status = gBS->FreePool ((VOID *) (UINTN) IdtEntryTable[ExceptionType].StubEntry);
ZeroMem (&IdtEntryTable[ExceptionType], sizeof (IDT_ENTRY));
WriteInterruptFlag (OldIntFlagState);
return (Status);
}
EFI_STATUS
ManageIdtEntryTable (
VOID (*NewCallback)(),
EFI_EXCEPTION_TYPE ExceptionType
)
/*++
Routine Description:
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.
Arguments:
NewCallback - If non-NULL, NewCallback specifies the new handler to register.
If NULL, specifies that the previously registered handler should
be uninstalled.
ExceptionType - Indicates which entry to manage
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (CompareDescriptor (&IdtEntryTable[ExceptionType].NewDesc, &NullDesc)) {
//
// we've already installed to this vector
//
if (NewCallback != NULL) {
//
// if the input handler is non-null, error
//
Status = EFI_ALREADY_STARTED;
} else {
Status = 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 {
Status = HookEntry (ExceptionType, NewCallback);
}
}
return Status;
}
EFI_STATUS
EFIAPI
GetMaximumProcessorIndex (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
OUT UINTN *MaxProcessorIndex
)
/*++
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
MaxProcessorIndex - The maximuim supported processor index
Returns:
Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
--*/
{
*MaxProcessorIndex = 0;
return (EFI_SUCCESS);
}
EFI_STATUS
EFIAPI
RegisterPeriodicCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK PeriodicCallback
)
/*++
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
PeriodicCallback - Callback function
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
{
return ManageIdtEntryTable (PeriodicCallback, SYSTEM_TIMER_VECTOR);
}
EFI_STATUS
EFIAPI
RegisterExceptionCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_EXCEPTION_CALLBACK NewCallback,
IN EFI_EXCEPTION_TYPE ExceptionType
)
/*++
Routine Description:
This is a DebugSupport protocol member function.
This code executes in boot services context.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
NewCallback - Callback function
ExceptionType - Which exception to hook
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
{
return ManageIdtEntryTable (NewCallback, ExceptionType);
}
EFI_STATUS
EFIAPI
InvalidateInstructionCache (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN VOID *Start,
IN UINT64 Length
)
/*++
Routine Description:
This is a DebugSupport protocol member function.
Calls assembly routine to flush cache.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
Start - Physical base of the memory range to be invalidated
Length - mininum number of bytes in instruction cache to invalidate
Returns:
EFI_SUCCESS - always return success
--*/
{
AsmWbinvd ();
return EFI_SUCCESS;
}
EFI_STATUS
plInitializeDebugSupportDriver (
VOID
)
/*++
Routine Description:
Initializes driver's handler registration database.
This code executes in boot services context.
Arguments:
None
Returns:
EFI_SUCCESS
EFI_UNSUPPORTED - if X64 processor does not support FXSTOR/FXRSTOR instructions,
the context save will fail, so these processor's are not supported.
EFI_OUT_OF_RESOURCES - not resource to finish initialization
--*/
{
if (!FxStorSupport ()) {
return EFI_UNSUPPORTED;
} else {
IdtEntryTable = AllocateZeroPool (sizeof (IDT_ENTRY) * NUM_IDT_ENTRIES);
if (IdtEntryTable != NULL) {
return EFI_SUCCESS;
} else {
return EFI_OUT_OF_RESOURCES;
}
}
}
EFI_STATUS
EFIAPI
plUnloadDebugSupportDriver (
IN EFI_HANDLE ImageHandle
)
/*++
Routine Description:
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.
This code executes in boot services context.
Arguments:
ImageHandle - The image handle of the unload handler
Returns:
EFI_SUCCESS - always return success
--*/
{
EFI_EXCEPTION_TYPE ExceptionType;
for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {
ManageIdtEntryTable (NULL, ExceptionType);
}
gBS->FreePool (IdtEntryTable);
return EFI_SUCCESS;
}
VOID
InterruptDistrubutionHub (
EFI_EXCEPTION_TYPE ExceptionType,
EFI_SYSTEM_CONTEXT_IA32 *ContextRecord
)
/*++
Routine Description: Common piece of code that invokes the registered handlers.
This code executes in exception context so no efi calls are allowed.
Arguments:
ExceptionType - exception type
ContextRecord - system context
Returns:
None
--*/
{
if (IdtEntryTable[ExceptionType].RegisteredCallback != NULL) {
if (ExceptionType != SYSTEM_TIMER_VECTOR) {
IdtEntryTable[ExceptionType].RegisteredCallback (ExceptionType, ContextRecord);
} else {
OrigVector = IdtEntryTable[ExceptionType].OrigVector;
IdtEntryTable[ExceptionType].RegisteredCallback (ContextRecord);
}
}
}

315
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/**@file
X64 specific debug support macros, typedefs and prototypes.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _PLDEBUG_SUPPORT_H
#define _PLDEBUG_SUPPORT_H
#define NUM_IDT_ENTRIES 0x78
#define SYSTEM_TIMER_VECTOR 0x68
#define VECTOR_ENTRY_PAGES 1
#define CopyDescriptor(Dest, Src) CopyMem ((Dest), (Src), sizeof (DESCRIPTOR))
#define ZeroDescriptor(Dest) CopyDescriptor ((Dest), &NullDesc)
#define ReadIdt(Vector, Dest) CopyDescriptor ((Dest), &((GetIdtr ())[(Vector)]))
#define WriteIdt(Vector, Src) CopyDescriptor (&((GetIdtr ())[(Vector)]), (Src))
#define CompareDescriptor(Desc1, Desc2) CompareMem ((Desc1), (Desc2), sizeof (DESCRIPTOR))
#define EFI_ISA IsaX64
#define FF_FXSR (1 << 24)
typedef struct {
UINT64 Low;
UINT64 High;
} DESCRIPTOR;
typedef struct {
DESCRIPTOR OrigDesc;
VOID (*OrigVector) (VOID);
DESCRIPTOR NewDesc;
VOID (*StubEntry) (VOID);
VOID (*RegisteredCallback) ();
} IDT_ENTRY;
extern EFI_SYSTEM_CONTEXT SystemContext;
extern UINT8 InterruptEntryStub[];
extern UINT32 StubSize;
extern VOID (*OrigVector) (VOID);
VOID
CommonIdtEntry (
VOID
)
/*++
Routine Description:
Generic IDT entry
Arguments:
None
Returns:
None
--*/
;
BOOLEAN
FxStorSupport (
VOID
)
/*++
Routine Description:
Check whether FXSTOR is supported
Arguments:
None
Returns:
TRUE - supported
FALSE - not supported
--*/
;
DESCRIPTOR *
GetIdtr (
VOID
)
/*++
Routine Description:
Return the physical address of IDTR
Arguments:
None
Returns:
The physical address of IDTR
--*/
;
VOID
Vect2Desc (
DESCRIPTOR * DestDesc,
VOID (*Vector) (VOID)
)
/*++
Routine Description:
Encodes an IDT descriptor with the given physical address
Arguments:
DestDesc - The IDT descriptor address
Vector - The interrupt vector entry
Returns:
None
--*/
;
BOOLEAN
WriteInterruptFlag (
BOOLEAN NewState
)
/*++
Routine Description:
Programs interrupt flag to the requested state and returns previous
state.
Arguments:
NewState - New interrupt status
Returns:
Old interrupt status
--*/
;
EFI_STATUS
plInitializeDebugSupportDriver (
VOID
)
/*++
Routine Description:
Initializes driver's handler registration database.
This code executes in boot services context.
Arguments:
None
Returns:
EFI_SUCCESS
EFI_UNSUPPORTED - if X64 processor does not support FXSTOR/FXRSTOR instructions,
the context save will fail, so these processor's are not supported.
EFI_OUT_OF_RESOURCES - not resource to finish initialization
--*/
;
EFI_STATUS
EFIAPI
plUnloadDebugSupportDriver (
IN EFI_HANDLE ImageHandle
)
/*++
Routine Description:
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.
This code executes in boot services context.
Arguments:
ImageHandle - The image handle of the unload handler
Returns:
EFI_SUCCESS - always return success
--*/
;
//
// DebugSupport protocol member functions
//
EFI_STATUS
EFIAPI
GetMaximumProcessorIndex (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
OUT UINTN *MaxProcessorIndex
)
/*++
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
MaxProcessorIndex - The maximuim supported processor index
Returns:
Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
--*/
;
EFI_STATUS
EFIAPI
RegisterPeriodicCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK PeriodicCallback
)
/*++
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
PeriodicCallback - Callback function
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
;
EFI_STATUS
EFIAPI
RegisterExceptionCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_EXCEPTION_CALLBACK NewCallback,
IN EFI_EXCEPTION_TYPE ExceptionType
)
/*++
Routine Description:
This is a DebugSupport protocol member function.
This code executes in boot services context.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
NewCallback - Callback function
ExceptionType - Which exception to hook
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
;
EFI_STATUS
EFIAPI
InvalidateInstructionCache (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN VOID *Start,
IN UINT64 Length
)
/*++
Routine Description:
This is a DebugSupport protocol member function.
Calls assembly routine to flush cache.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
Start - Physical base of the memory range to be invalidated
Length - mininum number of bytes in instruction cache to invalidate
Returns:
EFI_SUCCESS - always return success
--*/
;
#endif