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exec: fix check_watchpoint exiting cpu_loop 

In case of BP_STOP_BEFORE_ACCESS watchpoint check_watchpoint intends to
signal EXCP_DEBUG exception on exit from cpu loop, but later overwrites
exception code by the cpu_resume_from_signal call.

Use cpu_loop_exit with BP_STOP_BEFORE_ACCESS watchpoints.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
master
Max Filippov 2012-01-29 02:24:39 +04:00
parent 6736415047
commit 488d65772c
1 changed files with 2 additions and 1 deletions
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3
exec.c
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@ -3257,11 +3257,12 @@ static void check_watchpoint(int offset, int len_mask, int flags)
tb_phys_invalidate(tb, -1);
if (wp->flags & BP_STOP_BEFORE_ACCESS) {
env->exception_index = EXCP_DEBUG;
cpu_loop_exit(env);
} else {
cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags);
tb_gen_code(env, pc, cs_base, cpu_flags, 1);
cpu_resume_from_signal(env, NULL);
}
cpu_resume_from_signal(env, NULL);
}
} else {
wp->flags &= ~BP_WATCHPOINT_HIT;