X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=arch%2Fx86_64%2Fatomic.h;h=3235db16bbc57f93972827b0fdf57c923522d1a3;hb=4bb9b4f3b4a6794da3091f58acbd938ff66fc15b;hp=7a665c1b776d89562e04fdfa1c97affb8299ba59;hpb=062354f2e13148c6524f332f0a5aed877a3c9d61;p=musl

diff --git a/arch/x86_64/atomic.h b/arch/x86_64/atomic.h
index 7a665c1b..3235db16 100644
--- a/arch/x86_64/atomic.h
+++ b/arch/x86_64/atomic.h
@@ -1,5 +1,5 @@
-#ifndef _INTERNAA_ATOMIC_H
-#define _INTERNAA_ATOMIC_H
+#ifndef _INTERNAL_ATOMIC_H
+#define _INTERNAL_ATOMIC_H
 
 #include <stdint.h>
 
@@ -10,6 +10,12 @@ static inline int a_ctz_64(uint64_t x)
 	return r;
 }
 
+static inline int a_ctz_l(unsigned long x)
+{
+	long r;
+	__asm__( "bsf %1,%0" : "=r"(r) : "r"(x) );
+	return r;
+}
 
 static inline void a_and_64(volatile uint64_t *p, uint64_t v)
 {
@@ -48,6 +54,13 @@ static inline long a_cas_l(volatile void *p, long t, long s)
 	return t;
 }
 
+static inline int a_cas(volatile int *p, int t, int s)
+{
+	__asm__( "lock ; cmpxchgl %3, %1"
+		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
+	return t;
+}
+
 static inline void *a_swap_p(void *volatile *x, void *v)
 {
 	__asm__( "xchg %0, %1" : "=r"(v), "=m"(*(void **)x) : "0"(v) : "memory" );