diff options
| -rw-r--r-- | linux-user/signal.c | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 5ca6d62..2463155 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -66,12 +66,6 @@ static uint8_t host_to_target_signal_table[_NSIG] = { [SIGPWR] = TARGET_SIGPWR, [SIGSYS] = TARGET_SIGSYS, /* next signals stay the same */ - /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with - host libpthread signals. This assumes no one actually uses SIGRTMAX :-/ - To fix this properly we need to do manual signal delivery multiplexed - over a single host signal. */ - [__SIGRTMIN] = __SIGRTMAX, - [__SIGRTMAX] = __SIGRTMIN, }; static uint8_t target_to_host_signal_table[_NSIG]; @@ -480,31 +474,45 @@ static int core_dump_signal(int sig) } } +static void signal_table_init(void) +{ + int host_sig, target_sig; + + /* + * Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with + * host libpthread signals. This assumes no one actually uses SIGRTMAX :-/ + * To fix this properly we need to do manual signal delivery multiplexed + * over a single host signal. + */ + host_to_target_signal_table[__SIGRTMIN] = __SIGRTMAX; + host_to_target_signal_table[__SIGRTMAX] = __SIGRTMIN; + + /* generate signal conversion tables */ + for (host_sig = 1; host_sig < _NSIG; host_sig++) { + if (host_to_target_signal_table[host_sig] == 0) { + host_to_target_signal_table[host_sig] = host_sig; + } + } + for (host_sig = 1; host_sig < _NSIG; host_sig++) { + target_sig = host_to_target_signal_table[host_sig]; + target_to_host_signal_table[target_sig] = host_sig; + } +} + void signal_init(void) { TaskState *ts = (TaskState *)thread_cpu->opaque; struct sigaction act; struct sigaction oact; - int i, j; + int i; int host_sig; - /* generate signal conversion tables */ - for(i = 1; i < _NSIG; i++) { - if (host_to_target_signal_table[i] == 0) - host_to_target_signal_table[i] = i; - } - for(i = 1; i < _NSIG; i++) { - j = host_to_target_signal_table[i]; - target_to_host_signal_table[j] = i; - } + /* initialize signal conversion tables */ + signal_table_init(); /* Set the signal mask from the host mask. */ sigprocmask(0, 0, &ts->signal_mask); - /* set all host signal handlers. ALL signals are blocked during - the handlers to serialize them. */ - memset(sigact_table, 0, sizeof(sigact_table)); - sigfillset(&act.sa_mask); act.sa_flags = SA_SIGINFO; act.sa_sigaction = host_signal_handler; |