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Introduce BP_WATCHPOINT_HIT flag (Jan Kiszka)

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When one watchpoint is hit, others might have triggered as well. To
support users of the watchpoint API which need to detect such cases,
the BP_WATCHPOINT_HIT flag is introduced and maintained.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5744 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-11-18 20:37:55 +00:00
parent 880a757838
commit 6e140f28c6
3 changed files with 32 additions and 15 deletions
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11
cpu-exec.c
View file

@ -183,6 +183,15 @@ static inline TranslationBlock *tb_find_fast(void)
return tb;
}
static void cpu_handle_debug_exception(CPUState *env)
{
CPUWatchpoint *wp;
if (!env->watchpoint_hit)
for (wp = env->watchpoints; wp != NULL; wp = wp->next)
wp->flags &= ~BP_WATCHPOINT_HIT;
}
/* main execution loop */
int cpu_exec(CPUState *env1)
@ -237,6 +246,8 @@ int cpu_exec(CPUState *env1)
if (env->exception_index >= EXCP_INTERRUPT) {
/* exit request from the cpu execution loop */
ret = env->exception_index;
if (ret == EXCP_DEBUG)
cpu_handle_debug_exception(env);
break;
} else if (env->user_mode_only) {
/* if user mode only, we simulate a fake exception