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* sim-resume.c (sim_resume): Add local variable sig_to_deliver to

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avoid possible longjmp problems with automatic variable siggnal.
This commit is contained in:
Andrew Cagney 2002-07-15 16:13:12 +00:00
parent 7c43edc1d2
commit 39248af88f
2 changed files with 16 additions and 6 deletions
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5
sim/common/ChangeLog
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@ -1,3 +1,8 @@
2002-07-15 Andrew Cagney <ac131313@redhat.com>
* sim-resume.c (sim_resume): Add local variable sig_to_deliver to
avoid possible longjmp problems with automatic variable siggnal.
2002-07-14 Andrew Cagney <ac131313@redhat.com>
From 2002-07-11 Momchil Velikov <velco@fadata.bg>:

17
sim/common/sim-resume.c
View file

@ -65,24 +65,29 @@ sim_resume (SIM_DESC sd,
int last_cpu_nr = sim_engine_last_cpu_nr (sd);
int next_cpu_nr = sim_engine_next_cpu_nr (sd);
int nr_cpus = sim_engine_nr_cpus (sd);
int sig_to_deliver;
sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
if (next_cpu_nr >= nr_cpus)
next_cpu_nr = 0;
/* Only deliver the siggnal ]sic] the first time through - don't
re-deliver any siggnal during a restart. */
if (jmpval == sim_engine_restart_jmpval)
siggnal = 0;
/* Only deliver the SIGGNAL [sic] the first time through - don't
re-deliver any SIGGNAL during a restart. NOTE: A new local
variable is used to avoid problems with the automatic
variable ``siggnal'' being trashed by a long jump. */
if (jmpval == sim_engine_start_jmpval)
sig_to_deliver = siggnal;
else
sig_to_deliver = 0;
#ifdef SIM_CPU_EXCEPTION_RESUME
{
sim_cpu* cpu = STATE_CPU (sd, next_cpu_nr);
SIM_CPU_EXCEPTION_RESUME(sd, cpu, siggnal);
SIM_CPU_EXCEPTION_RESUME(sd, cpu, sig_to_deliver);
}
#endif
sim_engine_run (sd, next_cpu_nr, nr_cpus, siggnal);
sim_engine_run (sd, next_cpu_nr, nr_cpus, sig_to_deliver);
}
engine->jmpbuf = NULL;