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SourceLevelDebugPkg: Avoid to re-init IDT table again at SMI entry 

Current SmmDebugAgentLib will initialize IDT table to support source debugging
at each time SMI entry on SMM BSP. Actually, we only need to initialize IDT
table at first time SMI entry.

Add one flag to avoid re-initializing IDT table.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Jeff Fan 2016-11-29 14:51:18 +08:00
parent e27ccaba90
commit 6fee83fbca
1 changed files with 9 additions and 1 deletions
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10
SourceLevelDebugPkg/Library/DebugAgent/SmmDebugAgent/SmmDebugAgentLib.c
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@ -19,6 +19,7 @@ DEBUG_AGENT_MAILBOX mLocalMailbox;
UINTN mSavedDebugRegisters[6];
IA32_IDT_GATE_DESCRIPTOR mIdtEntryTable[33];
BOOLEAN mSkipBreakpoint = FALSE;
BOOLEAN mSmmDebugIdtInitFlag = FALSE;
CHAR8 mWarningMsgIgnoreSmmEntryBreak[] = "Ignore smmentrybreak setting for SMI issued during DXE debugging!\r\n";
@ -276,7 +277,14 @@ InitializeDebugAgent (
case DEBUG_AGENT_INIT_ENTER_SMI:
SaveDebugRegister ();
InitializeDebugIdt ();
if (!mSmmDebugIdtInitFlag) {
//
// We only need to initialize Debug IDT table at first SMI entry
// after SMM relocation.
//
InitializeDebugIdt ();
mSmmDebugIdtInitFlag = TRUE;
}
//
// Check if CPU APIC Timer is working, otherwise initialize it.
//