fix mips-specific bug in synccall (too little space for signal mask)

switch to the new __block_all_sigs/__restore_sigs internal API to
clean up the code too.

diff --git a/src/thread/synccall.c b/src/thread/synccall.c
index 90ad1e2..4127a41 100644 (file)
--- a/src/thread/synccall.c
+++ b/src/thread/synccall.c
@@ -43,7 +43,7 @@ void __synccall(void (*func)(void *), void *ctx)
        pthread_t self;
        struct sigaction sa;
        struct chain *next;
-       uint64_t oldmask;
+       sigset_t oldmask;
 
        if (!libc.threads_minus_1) {
                func(ctx);
@@ -52,8 +52,7 @@ void __synccall(void (*func)(void *), void *ctx)
 
        __inhibit_ptc();
 
-       __syscall(SYS_rt_sigprocmask, SIG_BLOCK, SIGALL_SET,
-               &oldmask, _NSIG/8);
+       __block_all_sigs(&oldmask);
 
        sem_init(&chaindone, 0, 0);
        sem_init(&chainlock, 0, 1);
@@ -86,8 +85,7 @@ void __synccall(void (*func)(void *), void *ctx)
                sem_post(&cur->sem);
        }
 
-       __syscall(SYS_rt_sigprocmask, SIG_SETMASK,
-               &oldmask, 0, _NSIG/8);
+       __restore_sigs(&oldmask);
 
        __release_ptc();
 }