1 files changed, 4 insertions, 11 deletions

diff --git a/src/thread/cancel_impl.c b/src/thread/cancel_impl.c
index 7652a7c9..3bf1e392 100644
--- a/src/thread/cancel_impl.c
+++ b/src/thread/cancel_impl.c
@@ -14,19 +14,12 @@ 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.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;
+	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;
@@ -42,14 +35,14 @@ 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();