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cbe: fixup x86 atomics

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- add zig_msvc_atomic_barrier()
- fix zig_msvc_atomic_load_p32
This commit is contained in:
kcbanner 2023-01-19 23:52:30 -05:00
parent 1aa2c32055
commit b22b84de9d
1 changed files with 13 additions and 1 deletions
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14
lib/zig.h
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@ -225,7 +225,12 @@ typedef char bool;
#define zig_atomicrmw_max(obj, arg, order, type) zig_expand_concat(zig_msvc_atomicrmw_max_, type)(obj, arg)
#define zig_atomic_store(obj, arg, order, type) zig_expand_concat(zig_msvc_atomic_store_, type)(obj, arg)
#define zig_atomic_load(obj, order, type) zig_expand_concat(zig_msvc_atomic_load_, type)(obj)
#if _M_X64
#define zig_fence(order) __faststorefence()
#else
#define zig_fence(order) zig_msvc_atomic_barrier()
#endif
// TODO: _MSC_VER && (_M_ARM || _M_ARM64)
#else
#define memory_order_relaxed 0
@ -2271,6 +2276,13 @@ zig_msvc_flt_atomics(f64, u64, 64)
#endif
#if _M_IX86
static inline void zig_msvc_atomic_barrier() {
zig_i32 barrier;
__asm {
xchg barrier, eax
}
}
static inline void* zig_msvc_atomicrmw_xchg_p32(void** obj, zig_u32* arg) {
return _InterlockedExchangePointer(obj, arg);
}
@ -2279,7 +2291,7 @@ static inline void zig_msvc_atomic_store_p32(void** obj, zig_u32* arg) {
_InterlockedExchangePointer(obj, arg);
}
static inline void* zig_msvc_atomic_load_p32(void** obj, zig_u32* arg) {
static inline void* zig_msvc_atomic_load_p32(void** obj) {
return (void*)_InterlockedOr((void*)obj, 0);
}