use compiler builtins for variadic macros when available

[oweals/musl.git] / arch / x86_64 / pthread_arch.h

diff --git a/arch/x86_64/pthread_arch.h b/arch/x86_64/pthread_arch.h
index af7ae86e2b72f726b81671f120a3cb3d2591add9..c424493a350dd7420dbf5845b2f9462b56774a9d 100644 (file)
--- a/arch/x86_64/pthread_arch.h
+++ b/arch/x86_64/pthread_arch.h
@@ -5,5 +5,5 @@ static inline struct pthread *__pthread_self()
        return self;
 }
 
-#define PC_AT_SYS(c) \
-       (*(uint16_t *)(((ucontext_t *)(c))->uc_mcontext.__gregs[16])==0x050f)
+#define CANCEL_REG_SP 15
+#define CANCEL_REG_IP 16