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* If DEBUG_DEBUGGER_COMMANDS is 1, invoke_debugger_command() will no longer

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install a fault handler, allowing to debug KDL commands better.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28376 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2008-10-30 11:33:15 +00:00
parent cca9f05114
commit 9521c5abb6
1 changed files with 9 additions and 2 deletions
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11
src/system/kernel/debug/debug_commands.cpp
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@ -24,6 +24,10 @@
#include "debug_variables.h"
#define DEBUG_DEBUGGER_COMMANDS 0
// Turns off the "FAULT" message to get a stack crawl
// of the failing debugger command.
#define INVOKE_COMMAND_FAULT 1
#define INVOKE_COMMAND_ERROR 2
@ -280,11 +284,13 @@ invoke_debugger_command(struct debugger_command *command, int argc, char** argv)
switch (setjmp(sInvokeCommandEnv[sInvokeCommandLevel++])) {
case 0:
int result;
#if DEBUG_DEBUGGER_COMMANDS
thread->fault_handler = (addr_t)&&error;
// Fake goto to trick the compiler not to optimize the code at the
// label away.
if (!thread)
goto error;
#endif
result = command->func(argc, argv);
@ -293,11 +299,12 @@ invoke_debugger_command(struct debugger_command *command, int argc, char** argv)
sInCommand = false;
return result;
error:
#if DEBUG_DEBUGGER_COMMANDS
error:
// jump to INVOKE_COMMAND_FAULT case, cleaning up the stack
longjmp(sInvokeCommandEnv[--sInvokeCommandLevel],
INVOKE_COMMAND_FAULT);
#endif
case INVOKE_COMMAND_FAULT:
{
debug_page_fault_info* info = debug_get_page_fault_info();