X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fthread%2Fcancel_impl.c;h=a16489820ad7f8f3f06d5fab7676958eca201a5d;hp=4f78a63a84ccc87c6736abb8b5c2589a14755f34;hb=8c0a3d9e5c169fc9d0f246ab59362b658b029ad7;hpb=98acf04fc00cbded6169056f2cd541d31725c091

diff --git a/src/thread/cancel_impl.c b/src/thread/cancel_impl.c
index 4f78a63a..a1648982 100644
--- a/src/thread/cancel_impl.c
+++ b/src/thread/cancel_impl.c
@@ -3,7 +3,6 @@
 void __cancel()
 {
 	pthread_t self = __pthread_self();
-	self->cp_sp = 0;
 	self->canceldisable = 1;
 	self->cancelasync = 0;
 	pthread_exit(PTHREAD_CANCELED);
@@ -14,20 +13,14 @@ long __syscall_cp_asm(volatile void *, long, long, long, long, long, long, long)
 long (__syscall_cp)(long nr, long u, long v, long w, long x, long y, long z)
 {
 	pthread_t self;
-	uintptr_t old_sp, old_ip;
 	long r;
 
-	if (!libc.threaded || (self = __pthread_self())->canceldisable)
+	if (!libc.main_thread || (self = __pthread_self())->canceldisable)
 		return __syscall(nr, u, v, w, x, y, z);
 
-	old_sp = self->cp_sp;
-	old_ip = self->cp_ip;
-	self->cp_sp = 0;
-	self->cp_ip = 0;
-	r = __syscall_cp_asm(&self->cp_sp, nr, u, v, w, x, y, z);
-	self->cp_ip = old_ip;
-	self->cp_sp = old_sp;
-	if (r == -EINTR && self->cancel && !self->canceldisable) __cancel();
+	r = __syscall_cp_asm(&self->cancel, nr, u, v, w, x, y, z);
+	if (r==-EINTR && nr!=SYS_close && self->cancel && !self->canceldisable)
+		__cancel();
 	return r;
 }
 
@@ -41,26 +34,25 @@ static void cancel_handler(int sig, siginfo_t *si, void *ctx)
 {
 	pthread_t self = __pthread_self();
 	ucontext_t *uc = ctx;
-	uintptr_t sp = ((uintptr_t *)&uc->uc_mcontext)[CANCEL_REG_SP];
-	uintptr_t ip = ((uintptr_t *)&uc->uc_mcontext)[CANCEL_REG_IP];
+	const char *ip = ((char **)&uc->uc_mcontext)[CANCEL_REG_IP];
+	extern const char __cp_begin[1], __cp_end[1];
 
 	if (!self->cancel || self->canceldisable) return;
 
 	_sigaddset(&uc->uc_sigmask, SIGCANCEL);
 
-	if (self->cancelasync || sp == self->cp_sp && ip <= self->cp_ip) {
+	if (self->cancelasync || ip >= __cp_begin && ip < __cp_end) {
 		self->canceldisable = 1;
 		pthread_sigmask(SIG_SETMASK, &uc->uc_sigmask, 0);
 		__cancel();
 	}
 
-	if (self->cp_sp)
-		__syscall(SYS_tgkill, self->pid, self->tid, SIGCANCEL);
+	__syscall(SYS_tgkill, self->pid, self->tid, SIGCANCEL);
 }
 
 void __testcancel()
 {
-	pthread_t self = __pthread_self();
+	pthread_t self = pthread_self();
 	if (self->cancel && !self->canceldisable)
 		__cancel();
 }