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winedbg: Allow backtraces to properly return address outside functions.

This commit is contained in:
Eric Pouech 2010-03-30 21:37:22 +02:00 committed by Alexandre Julliard
parent eef72ad2ff
commit d49fe171f7
1 changed files with 9 additions and 0 deletions
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9
programs/winedbg/stack.c
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@ -83,6 +83,15 @@ static BOOL stack_get_frame(int nf, IMAGEHLP_STACK_FRAME* ihsf)
{
memset(ihsf, 0, sizeof(*ihsf));
ihsf->InstructionOffset = dbg_curr_thread->frames[nf].linear_pc;
/* if we're not the first frame, InstructionOffset is the return address
* after the call instruction (at least on most processors I know of).
* However, there are cases where this address is outside of the current function.
* This happens when the called function is marked <NO RETURN>, in which
* case the compiler can omit the epilog (gcc 4 does it)
* Therefore, we decrement InstructionOffset in order to ensure that
* the considered address is really inside the current function.
*/
if (nf) ihsf->InstructionOffset--;
ihsf->FrameOffset = dbg_curr_thread->frames[nf].linear_frame;
ihsf->StackOffset = dbg_curr_thread->frames[nf].linear_stack;
return TRUE;