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This revision can only work with Intel(c) UDK Debugger Tool version 1.3 or greater. Detailed change log is as below:

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1. Add DebugAgentPei driver to initialize Debug Agent in PEI phase.
   Add DebugAgentDxe driver to initialize Debug Agent in DXE phase.
   DebugAgentDxe driver could be loaded and unloaded in shell.
2. Update the SourceLevelDebugPkg so that the debug agent can be initialized in any phase: SEC, PEI or DXE.
3. Add an enhanced retry algorithm that provides a robust connection when data loss happens in the debug channel.
4. Clear DR7 register in exception handler.
5. Set the default serial port parameter to 0 instead of PCDs.
6. Build pointer of Mailbox in HOB instead of Mailbox itself, since HOB may be moved at DXE entry point function.
7. Raise TPL to prevent recursion from EFI timer interrupts in SerialIo.c.
8. Add one spin lock for accessing Mailbox when MP debugging supported.
9. Use more non-NULL library instances in SourceLevelDebugPkg DSC file, thus DebugAgentDxe.efi built from SourceLevelDebugPkg could work in shell.
10.Separate all operations about IDT table entry from SecDebugAgentLib.c into DebugAgent\DebugAgentCommon's arch sub-directory.
11.Enhance Debug Agent to avoid breaking by hardware SMI during DXE debugging phase.
12.Add supporting on mode switch code debugging.
13.Remove reset Host Controller operation in DebugCommunicationLibUsb.c to avoid impacting EDKII usb stack.
14.Fix debug timer interrupt missing issue after back from legacy code.

Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14083 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2013-01-25 02:36:18 +00:00
parent b7d269eae1
commit b422b62c01
41 changed files with 3277 additions and 975 deletions
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61
SourceLevelDebugPkg/Library/PeCoffExtraActionLibDebug/PeCoffExtraActionLib.c
View File

@@ -1,7 +1,7 @@
/** @file
PE/Coff Extra Action library instances.
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2013, 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
@@ -12,17 +12,7 @@
**/
#include <Base.h>
#include <Library/PeCoffExtraActionLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/IoLib.h>
#include <Library/PcdLib.h>
#include <ImageDebugSupport.h>
#define DEBUG_LOAD_IMAGE_METHOD_IO_HW_BREAKPOINT 1
#define DEBUG_LOAD_IMAGE_METHOD_SOFT_INT3 2
#include <PeCoffExtraActionLib.h>
/**
Check if the hardware breakpoint in Drx is enabled by checking the Lx and Gx bit in Dr7.
@@ -62,16 +52,19 @@ PeCoffLoaderExtraActionCommon (
IN UINTN Signature
)
{
BOOLEAN InterruptState;
UINTN Dr0;
UINTN Dr1;
UINTN Dr2;
UINTN Dr3;
UINTN Dr7;
UINTN Cr4;
UINTN NewDr7;
UINT8 LoadImageMethod;
UINT8 DebugAgentStatus;
BOOLEAN InterruptState;
UINTN Dr0;
UINTN Dr1;
UINTN Dr2;
UINTN Dr3;
UINTN Dr7;
UINTN Cr4;
UINTN NewDr7;
UINT8 LoadImageMethod;
UINT8 DebugAgentStatus;
IA32_DESCRIPTOR IdtDescriptor;
IA32_IDT_GATE_DESCRIPTOR OriginalIdtEntry;
BOOLEAN IdtEntryHooked;
ASSERT (ImageContext != NULL);
@@ -84,6 +77,23 @@ PeCoffLoaderExtraActionCommon (
//
InterruptState = SaveAndDisableInterrupts ();
IdtEntryHooked = FALSE;
LoadImageMethod = PcdGet8 (PcdDebugLoadImageMethod);
AsmReadIdtr (&IdtDescriptor);
if (!CheckDebugAgentHandler (&IdtDescriptor)) {
if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_SOFT_INT3) {
//
// Do not trigger INT3 if Debug Agent did not setup IDT entries.
//
return;
}
//
// Save and update IDT entry for INT1
//
SaveAndUpdateIdtEntry1 (&IdtDescriptor, &OriginalIdtEntry);
IdtEntryHooked = TRUE;
}
//
// Save Debug Register State
//
@@ -108,7 +118,6 @@ PeCoffLoaderExtraActionCommon (
AsmWriteDr2 ((UINTN) ImageContext);
AsmWriteDr3 (IO_PORT_BREAKPOINT_ADDRESS);
LoadImageMethod = PcdGet8 (PcdDebugLoadImageMethod);
if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_IO_HW_BREAKPOINT) {
AsmWriteDr7 (0x20000480);
AsmWriteCr4 (Cr4 | BIT3);
@@ -156,6 +165,12 @@ PeCoffLoaderExtraActionCommon (
AsmWriteDr7 (Dr7);
}
//
// Restore original IDT entry for INT1 if it was hooked.
//
if (IdtEntryHooked) {
RestoreIdtEntry1 (&IdtDescriptor, &OriginalIdtEntry);
}
//
// Restore the interrupt state
//
SetInterruptState (InterruptState);