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SourceLevelDebugPkg/DebugAgent: Add some comments and debug message

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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17206 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan
2015-04-27 05:26:03 +00:00
committed by vanjeff
parent 39e97c396d
commit bbeacc5816
1 changed files with 22 additions and 4 deletions
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26
SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.c
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@ -1335,8 +1335,12 @@ GetBreakCause (
if ((CpuContext->Dr6 & BIT14) != 0) { if ((CpuContext->Dr6 & BIT14) != 0) {
Cause = DEBUG_DATA_BREAK_CAUSE_STEPPING; Cause = DEBUG_DATA_BREAK_CAUSE_STEPPING;
// //
// If it's single step, no need to check DR0, to ensure single step work in PeCoffExtraActionLib // DR6.BIT14 Indicates (when set) that the debug exception was
// (right after triggering a breakpoint to report image load/unload). // triggered by the single step execution mode.
// The single-step mode is the highest priority debug exception.
// This is single step, no need to check DR0, to ensure single step
// work in PeCoffExtraActionLib (right after triggering a breakpoint
// to report image load/unload).
// //
return Cause; return Cause;
@ -2392,9 +2396,16 @@ InterruptProcess (
// Check if this exception is issued by Debug Agent itself // Check if this exception is issued by Debug Agent itself
// If yes, fill the debug agent exception buffer and LongJump() back to // If yes, fill the debug agent exception buffer and LongJump() back to
// the saved CPU content in CommandCommunication() // the saved CPU content in CommandCommunication()
// If exception is issued when executing Stepping, will be handled in
// exception handle procedure.
// //
if (GetDebugFlag (DEBUG_AGENT_FLAG_AGENT_IN_PROGRESS) == 1) { if (GetDebugFlag (DEBUG_AGENT_FLAG_AGENT_IN_PROGRESS) == 1) {
DebugAgentMsgPrint (DEBUG_AGENT_ERROR, "Debug agent meet one Exception, ExceptionNum is %d, EIP = 0x%x.\n", Vector, (UINTN)CpuContext->Eip); DebugAgentMsgPrint (
DEBUG_AGENT_ERROR,
"Debug agent meet one Exception, ExceptionNum is %d, EIP = 0x%x.\n",
Vector,
(UINTN)CpuContext->Eip
);
ExceptionBuffer = (DEBUG_AGENT_EXCEPTION_BUFFER *) (UINTN) GetMailboxPointer()->ExceptionBufferPointer; ExceptionBuffer = (DEBUG_AGENT_EXCEPTION_BUFFER *) (UINTN) GetMailboxPointer()->ExceptionBufferPointer;
ExceptionBuffer->ExceptionContent.ExceptionNum = (UINT8) Vector; ExceptionBuffer->ExceptionContent.ExceptionNum = (UINT8) Vector;
ExceptionBuffer->ExceptionContent.ExceptionData = (UINT32) CpuContext->ExceptionData; ExceptionBuffer->ExceptionContent.ExceptionData = (UINT32) CpuContext->ExceptionData;
@ -2604,9 +2615,16 @@ InterruptProcess (
default: default:
if (Vector <= DEBUG_EXCEPT_SIMD) { if (Vector <= DEBUG_EXCEPT_SIMD) {
DebugAgentMsgPrint (
DEBUG_AGENT_ERROR,
"Exception happened, ExceptionNum is %d, EIP = 0x%x.\n",
Vector,
(UINTN) CpuContext->Eip
);
if (BreakCause == DEBUG_DATA_BREAK_CAUSE_STEPPING) { if (BreakCause == DEBUG_DATA_BREAK_CAUSE_STEPPING) {
// //
// Stepping is finished, send Ack package. // If exception happened when executing Stepping, send Ack package.
// HOST consider Stepping command was finished.
// //
if (MultiProcessorDebugSupport()) { if (MultiProcessorDebugSupport()) {
mDebugMpContext.BreakAtCpuIndex = ProcessorIndex; mDebugMpContext.BreakAtCpuIndex = ProcessorIndex;