Index: fusl/arch/i386/atomic.h |
diff --git a/fusl/arch/i386/atomic.h b/fusl/arch/i386/atomic.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..fd222eae008c9e3c24a9b38f17be112c27d7332d |
--- /dev/null |
+++ b/fusl/arch/i386/atomic.h |
@@ -0,0 +1,110 @@ |
+#ifndef _INTERNAL_ATOMIC_H |
+#define _INTERNAL_ATOMIC_H |
+ |
+#include <stdint.h> |
+ |
+static inline int a_ctz_64(uint64_t x) |
+{ |
+ int r; |
+ __asm__( "bsf %1,%0 ; jnz 1f ; bsf %2,%0 ; addl $32,%0\n1:" |
+ : "=&r"(r) : "r"((unsigned)x), "r"((unsigned)(x>>32)) ); |
+ 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) |
+{ |
+ __asm__( "lock ; andl %1, (%0) ; lock ; andl %2, 4(%0)" |
+ : : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" ); |
+} |
+ |
+static inline void a_or_64(volatile uint64_t *p, uint64_t v) |
+{ |
+ __asm__( "lock ; orl %1, (%0) ; lock ; orl %2, 4(%0)" |
+ : : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" ); |
+} |
+ |
+static inline void a_or_l(volatile void *p, long v) |
+{ |
+ __asm__( "lock ; orl %1, %0" |
+ : "=m"(*(long *)p) : "r"(v) : "memory" ); |
+} |
+ |
+static inline void *a_cas_p(volatile void *p, void *t, void *s) |
+{ |
+ __asm__( "lock ; cmpxchg %3, %1" |
+ : "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" ); |
+ return t; |
+} |
+ |
+static inline int a_cas(volatile int *p, int t, int s) |
+{ |
+ __asm__( "lock ; cmpxchg %3, %1" |
+ : "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" ); |
+ return t; |
+} |
+ |
+static inline void a_or(volatile int *p, int v) |
+{ |
+ __asm__( "lock ; orl %1, %0" |
+ : "=m"(*p) : "r"(v) : "memory" ); |
+} |
+ |
+static inline void a_and(volatile int *p, int v) |
+{ |
+ __asm__( "lock ; andl %1, %0" |
+ : "=m"(*p) : "r"(v) : "memory" ); |
+} |
+ |
+static inline int a_swap(volatile int *x, int v) |
+{ |
+ __asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" ); |
+ return v; |
+} |
+ |
+#define a_xchg a_swap |
+ |
+static inline int a_fetch_add(volatile int *x, int v) |
+{ |
+ __asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" ); |
+ return v; |
+} |
+ |
+static inline void a_inc(volatile int *x) |
+{ |
+ __asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" ); |
+} |
+ |
+static inline void a_dec(volatile int *x) |
+{ |
+ __asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" ); |
+} |
+ |
+static inline void a_store(volatile int *p, int x) |
+{ |
+ __asm__( "movl %1, %0 ; lock ; orl $0,(%%esp)" : "=m"(*p) : "r"(x) : "memory" ); |
+} |
+ |
+static inline void a_spin() |
+{ |
+ __asm__ __volatile__( "pause" : : : "memory" ); |
+} |
+ |
+static inline void a_barrier() |
+{ |
+ __asm__ __volatile__( "" : : : "memory" ); |
+} |
+ |
+static inline void a_crash() |
+{ |
+ __asm__ __volatile__( "hlt" : : : "memory" ); |
+} |
+ |
+ |
+#endif |