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pommicket 2022-02-20 13:18:21 -08:00
parent 0f97a589b8
commit 9bc8a11afe
1069 changed files with 48694 additions and 11 deletions
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109
05/musl-0.6.0/arch/x86_64/atomic.h Normal file
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#ifndef _INTERNAA_ATOMIC_H
#define _INTERNAA_ATOMIC_H
#include <stdint.h>
static inline int a_ctz_64(uint64_t 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 ; andq %1, %0"
: "=m"(*(long *)p) : "r"(v) : "memory" );
}
static inline void a_or_64(volatile uint64_t *p, uint64_t v)
{
__asm__( "lock ; orq %1, %0"
: "=m"(*(long *)p) : "r"(v) : "memory" );
}
static inline void a_store_l(volatile void *p, long x)
{
__asm__( "movq %1, %0" : "=m"(*(long *)p) : "r"(x) : "memory" );
}
static inline void a_or_l(volatile void *p, long v)
{
__asm__( "lock ; orq %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 long a_cas_l(volatile void *p, long t, long s)
{
__asm__( "lock ; cmpxchg %3, %1"
: "=a"(t), "=m"(*(long *)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" );
return v;
}
static inline long a_swap_l(volatile void *x, long v)
{
__asm__( "xchg %0, %1" : "=r"(v), "=m"(*(long *)x) : "0"(v) : "memory" );
return v;
}
static inline void a_or(volatile void *p, int v)
{
__asm__( "lock ; orl %1, %0"
: "=m"(*(int *)p) : "r"(v) : "memory" );
}
static inline void a_and(volatile void *p, int v)
{
__asm__( "lock ; andl %1, %0"
: "=m"(*(int *)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" : "=m"(*p) : "r"(x) : "memory" );
}
static inline void a_spin()
{
__asm__ __volatile__( "pause" : : : "memory" );
}
#endif