61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
#ifndef __ATOMIC_OPERATIONS_H__
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#define __ATOMIC_OPERATIONS_H__
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#include "types.h"
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typedef struct {
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u64 Value;
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} T_ATOMIC;
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#define atomic_init(n) { (n) }
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#define atomic_read(v) ((v)->Value)
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#define atomic_set(v, n) (((v)->Value) = n)
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static inline void atomic_add(T_ATOMIC *Atom, u64 Value)
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{
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__asm__ volatile("lock addq %1, %0" : "+m"(Atom->Value) : "ir"(Value));
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}
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static inline void atomic_sub(T_ATOMIC *Atom, u64 Value)
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{
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__asm__ volatile("lock subq %1, %0" : "+m"(Atom->Value) : "ir"(Value));
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}
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static inline u8 atomic_sub_and_test(T_ATOMIC *Atom, u64 Value)
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{
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u8 C;
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__asm__ volatile("lock subq %2, %0\n"
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"sete %1\n"
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: "+m"(Atom->Value), "=qm"(C)
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: "ir" (Value) : "memory");
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return C;
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}
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static inline void atomic_inc(T_ATOMIC *Atom)
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{
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__asm__ volatile("lock incq %0" : "+m"(Atom->Value));
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}
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static inline void atomic_dec(T_ATOMIC *Atom)
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{
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__asm__ volatile("lock decq %0" : "+m"(Atom->Value));
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}
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static inline u8 atomic_dec_and_test(T_ATOMIC *Atom)
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{
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u8 C;
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__asm__ volatile("lock decq %0\n"
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"sete %1" : "+m"(Atom->Value), "=qm"(C) :: "memory");
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return C;
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}
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static inline u8 atomic_inc_and_test(T_ATOMIC *Atom)
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{
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u8 C;
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__asm__ volatile("lock incq %0\n"
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"sete %1" : "+m"(Atom->Value), "=qm"(C) :: "memory");
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return C;
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}
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#endif
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