Andrew,
Good catch! Now, only Debug Timer interrupt was disabled before hand-off to OS.
Besides Debug Registers, we also need to think how to clear the soft break
points set by WinDbg or GDB in runtime services or in SMM code. One new
InitFlag could be introduced to help HOST debugger to clear such break points
if needed.
Jeff
From: Andrew Fish [mailto:[email protected]]
Sent: Saturday, August 25, 2012 3:01 AM
To: [email protected]
Subject: [edk2] DebugAgentLib question
#define DEBUG_AGENT_INIT_PREMEM_SEC 1
#define DEBUG_AGENT_INIT_POSTMEM_SEC 2
#define DEBUG_AGENT_INIT_DXE_CORE 3
#define DEBUG_AGENT_INIT_SMM 4
#define DEBUG_AGENT_INIT_ENTER_SMI 5
#define DEBUG_AGENT_INIT_EXIT_SMI 6
#define DEBUG_AGENT_INIT_S3 7
#define DEBUG_AGENT_INIT_DXE_AP 8
#define DEBUG_AGENT_INIT_PEI 9
#define DEBUG_AGENT_INIT_DXE_LOAD 10
#define DEBUG_AGENT_INIT_DXE_UNLOAD 11
I was looking for a InitializeDebugAgent() InitFlag to turn off the debugger on
boot? I was worried that if debug register were active when the OS boots that
may cause an issue. Is it safe to assume the OS would clear debug registers
prior to switching over the IDT? That seems to be implied by this interface?
Andrew Fish
https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/MdeModulePkg/Include/Library/DebugAgentLib.h
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