Adds most of the toolsHEADmaster

2 files changed, 976 insertions, 0 deletions

diff --git a/v_windows/v/thirdparty/stdatomic/nix/atomic.h b/v_windows/v/thirdparty/stdatomic/nix/atomic.h
new file mode 100644
index 0000000..3bcb867
--- /dev/null
+++ b/v_windows/v/thirdparty/stdatomic/nix/atomic.h
@@ -0,0 +1,435 @@
+/*
+    Compability header for stdatomic.h that works for all compilers supported
+    by V. For TCC libatomic from the operating system is used
+
+*/
+#ifndef __ATOMIC_H
+#define __ATOMIC_H
+
+#ifndef __cplusplus
+// If C just use stdatomic.h
+#ifndef __TINYC__
+#include <stdatomic.h>
+#endif
+#else
+// CPP wrapper for atomic operations that are compatible with C
+#include "atomic_cpp.h"
+#endif
+
+#ifdef __TINYC__
+
+typedef volatile long long atomic_llong;
+typedef volatile unsigned long long atomic_ullong;
+typedef volatile uintptr_t atomic_uintptr_t;
+
+// use functions for 64, 32 and 8 bit from libatomic directly
+// since tcc is not capible to use "generic" C functions
+// there is no header file for libatomic so we provide function declarations here
+
+extern unsigned long long __atomic_load_8(unsigned long long* x, int mo);
+extern void __atomic_store_8(unsigned long long* x, unsigned long long y, int mo);
+extern _Bool __atomic_compare_exchange_8(unsigned long long* x, unsigned long long* expected, unsigned long long y, int mo, int mo2);
+extern _Bool __atomic_compare_exchange_8(unsigned long long* x, unsigned long long* expected, unsigned long long y, int mo, int mo2);
+extern unsigned long long __atomic_exchange_8(unsigned long long* x, unsigned long long y, int mo);
+extern unsigned long long __atomic_fetch_add_8(unsigned long long* x, unsigned long long y, int mo);
+extern unsigned long long __atomic_fetch_sub_8(unsigned long long* x, unsigned long long y, int mo);
+extern unsigned long long __atomic_fetch_and_8(unsigned long long* x, unsigned long long y, int mo);
+extern unsigned long long __atomic_fetch_or_8(unsigned long long* x, unsigned long long y, int mo);
+extern unsigned long long __atomic_fetch_xor_8(unsigned long long* x, unsigned long long y, int mo);
+
+extern unsigned int __atomic_load_4(unsigned int* x, int mo);
+extern void __atomic_store_4(unsigned int* x, unsigned int y, int mo);
+extern _Bool __atomic_compare_exchange_4(unsigned int* x, unsigned int* expected, unsigned int y, int mo, int mo2);
+extern _Bool __atomic_compare_exchange_4(unsigned int* x, unsigned int* expected, unsigned int y, int mo, int mo2);
+extern unsigned int __atomic_exchange_4(unsigned int* x, unsigned int y, int mo);
+extern unsigned int __atomic_fetch_add_4(unsigned int* x, unsigned int y, int mo);
+extern unsigned int __atomic_fetch_sub_4(unsigned int* x, unsigned int y, int mo);
+extern unsigned int __atomic_fetch_and_4(unsigned int* x, unsigned int y, int mo);
+extern unsigned int __atomic_fetch_or_4(unsigned int* x, unsigned int y, int mo);
+extern unsigned int __atomic_fetch_xor_4(unsigned int* x, unsigned int y, int mo);
+
+extern unsigned short __atomic_load_2(unsigned short* x, int mo);
+extern void __atomic_store_2(unsigned short* x, unsigned short y, int mo);
+extern _Bool __atomic_compare_exchange_2(unsigned short* x, unsigned short* expected, unsigned short y, int mo, int mo2);
+extern _Bool __atomic_compare_exchange_2(unsigned short* x, unsigned short* expected, unsigned short y, int mo, int mo2);
+extern unsigned short __atomic_exchange_2(unsigned short* x, unsigned short y, int mo);
+extern unsigned short __atomic_fetch_add_2(unsigned short* x, unsigned short y, int mo);
+extern unsigned short __atomic_fetch_sub_2(unsigned short* x, unsigned short y, int mo);
+extern unsigned short __atomic_fetch_and_2(unsigned short* x, unsigned short y, int mo);
+extern unsigned short __atomic_fetch_or_2(unsigned short* x, unsigned short y, int mo);
+extern unsigned short __atomic_fetch_xor_2(unsigned short* x, unsigned short y, int mo);
+
+extern unsigned char __atomic_load_1(unsigned char* x, int mo);
+extern void __atomic_store_1(unsigned char* x, unsigned char y, int mo);
+extern _Bool __atomic_compare_exchange_1(unsigned char* x, unsigned char* expected, unsigned char y, int mo, int mo2);
+extern _Bool __atomic_compare_exchange_1(unsigned char* x, unsigned char* expected, unsigned char y, int mo, int mo2);
+extern unsigned char __atomic_exchange_1(unsigned char* x, unsigned char y, int mo);
+extern unsigned char __atomic_fetch_add_1(unsigned char* x, unsigned char y, int mo);
+extern unsigned char __atomic_fetch_sub_1(unsigned char* x, unsigned char y, int mo);
+extern unsigned char __atomic_fetch_and_1(unsigned char* x, unsigned char y, int mo);
+extern unsigned char __atomic_fetch_or_1(unsigned char* x, unsigned char y, int mo);
+extern unsigned char __atomic_fetch_xor_1(unsigned char* x, unsigned char y, int mo);
+
+// The default functions should work with pointers so we have to decide based on pointer size
+#if UINTPTR_MAX == 0xFFFFFFFF
+
+#define atomic_load_explicit __atomic_load_4
+#define atomic_store_explicit __atomic_store_4
+#define atomic_compare_exchange_weak_explicit __atomic_compare_exchange_4
+#define atomic_compare_exchange_strong_explicit __atomic_compare_exchange_4
+#define atomic_exchange_explicit __atomic_exchange_4
+#define atomic_fetch_add_explicit __atomic_fetch_add_4
+#define atomic_fetch_sub_explicit __atomic_sub_fetch_4
+
+#else
+
+#define atomic_load_explicit __atomic_load_8
+#define atomic_store_explicit __atomic_store_8
+#define atomic_compare_exchange_weak_explicit __atomic_compare_exchange_8
+#define atomic_compare_exchange_strong_explicit __atomic_compare_exchange_8
+#define atomic_exchange_explicit __atomic_exchange_8
+#define atomic_fetch_add_explicit __atomic_fetch_add_8
+#define atomic_fetch_sub_explicit __atomic_sub_fetch_8
+
+#endif
+
+// memory order policies - we use "sequentially consistent" by default
+
+#define memory_order_relaxed 0
+#define memory_order_consume 1
+#define memory_order_acquire 2
+#define memory_order_release 3
+#define memory_order_acq_rel 4
+#define memory_order_seq_cst 5
+
+static inline void** atomic_load(void** x) {
+	return (void**)atomic_load_explicit((unsigned long long*)x, memory_order_seq_cst);
+}
+static inline void atomic_store(void** x, void* y) {
+	atomic_store_explicit((unsigned long long*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak(void** x, void** expected, void* y) {
+	return (int)atomic_compare_exchange_weak_explicit((unsigned long long*)x, (unsigned long long*)expected, (uintptr_t)y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong(void** x,  void** expected, void* y) {
+	return (int)atomic_compare_exchange_strong_explicit((unsigned long long*)x, (unsigned long long*)expected, (uintptr_t)y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline uintptr_t atomic_exchange(void** x, void* y) {
+	return atomic_exchange_explicit((unsigned long long*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline uintptr_t atomic_fetch_add(uintptr_t* x, uintptr_t y) {
+	return atomic_fetch_add_explicit(x, y, memory_order_seq_cst);
+}
+static inline uintptr_t atomic_fetch_sub(uintptr_t* x, uintptr_t y) {
+	return atomic_fetch_sub_explicit(x, y, memory_order_seq_cst);
+}
+static inline uintptr_t atomic_fetch_and(uintptr_t* x, uintptr_t y) {
+	return atomic_fetch_and_explicit(x, y, memory_order_seq_cst);
+}
+static inline uintptr_t atomic_fetch_or(uintptr_t* x, uintptr_t y) {
+	return atomic_fetch_or_explicit(x, y, memory_order_seq_cst);
+}
+static inline uintptr_t atomic_fetch_xor(uintptr_t* x, uintptr_t y) {
+	return atomic_fetch_xor_explicit(x, y, memory_order_seq_cst);
+}
+
+#define atomic_load_ptr atomic_load
+#define atomic_store_ptr atomic_store
+#define atomic_compare_exchange_weak_ptr atomic_compare_exchange_weak
+#define atomic_compare_exchange_strong_ptr atomic_compare_exchange_strong
+#define atomic_exchange_ptr atomic_exchange
+#define atomic_fetch_add_ptr atomic_fetch_add
+#define atomic_fetch_sub_ptr atomic_fetch_sub
+#define atomic_fetch_and_ptr atomic_fetch_and
+#define atomic_fetch_or_ptr atomic_fetch_or
+#define atomic_fetch_xor_ptr atomic_fetch_xor
+
+// specialized versions for 64 bit
+
+static inline unsigned long long atomic_load_u64(unsigned long long* x) {
+	return __atomic_load_8(x, memory_order_seq_cst);
+}
+static inline void atomic_store_u64(unsigned long long* x, unsigned long long y) {
+	__atomic_store_8(x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_u64(unsigned long long* x, unsigned long long* expected, unsigned long long y) {
+	return (int)__atomic_compare_exchange_8(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_u64(unsigned long long* x, unsigned long long* expected, unsigned long long y) {
+	return (int)__atomic_compare_exchange_8(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_exchange_u64(unsigned long long* x, unsigned long long y) {
+	return __atomic_exchange_8(x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_add_u64(unsigned long long* x, unsigned long long y) {
+	return __atomic_fetch_add_8(x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_sub_u64(unsigned long long* x, unsigned long long y) {
+	return __atomic_fetch_sub_8(x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_and_u64(unsigned long long* x, unsigned long long y) {
+	return __atomic_fetch_and_8(x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_or_u64(unsigned long long* x, unsigned long long y) {
+	return __atomic_fetch_or_8(x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_xor_u64(unsigned long long* x, unsigned long long y) {
+	return __atomic_fetch_xor_8(x, y, memory_order_seq_cst);
+}
+
+static inline unsigned atomic_load_u32(unsigned* x) {
+	return __atomic_load_4(x, memory_order_seq_cst);
+}
+static inline void atomic_store_u32(unsigned* x, unsigned y) {
+	__atomic_store_4(x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_u32(unsigned* x, unsigned* expected, unsigned y) {
+	return (int)__atomic_compare_exchange_4(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_u32(unsigned* x, unsigned* expected, unsigned y) {
+	return (int)__atomic_compare_exchange_4(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned atomic_exchange_u32(unsigned* x, unsigned y) {
+	return __atomic_exchange_4(x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_add_u32(unsigned* x, unsigned y) {
+	return __atomic_fetch_add_4(x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_sub_u32(unsigned* x, unsigned y) {
+	return __atomic_fetch_sub_4(x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_and_u32(unsigned* x, unsigned y) {
+	return __atomic_fetch_and_4(x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_or_u32(unsigned* x, unsigned y) {
+	return __atomic_fetch_or_4(x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_xor_u32(unsigned* x, unsigned y) {
+	return __atomic_fetch_xor_4(x, y, memory_order_seq_cst);
+}
+
+static inline unsigned short atomic_load_u16(unsigned short* x) {
+	return __atomic_load_2(x, memory_order_seq_cst);
+}
+static inline void atomic_store_u16(void* x, unsigned short y) {
+	__atomic_store_2(x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_u16(void* x, unsigned short* expected, unsigned short y) {
+	return (int)__atomic_compare_exchange_2(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_u16(unsigned short* x, unsigned short* expected, unsigned short y) {
+	return (int)__atomic_compare_exchange_2(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned short atomic_exchange_u16(unsigned short* x, unsigned short y) {
+	return __atomic_exchange_2(x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_add_u16(unsigned short* x, unsigned short y) {
+	return __atomic_fetch_add_2(x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_sub_u16(unsigned short* x, unsigned short y) {
+	return __atomic_fetch_sub_2(x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_and_u16(unsigned short* x, unsigned short y) {
+	return __atomic_fetch_and_2(x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_or_u16(unsigned short* x, unsigned short y) {
+	return __atomic_fetch_or_2(x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_xor_u16(unsigned short* x, unsigned short y) {
+	return __atomic_fetch_xor_2(x, y, memory_order_seq_cst);
+}
+
+static inline unsigned char atomic_load_byte(unsigned char* x) {
+	return __atomic_load_1(x, memory_order_seq_cst);
+}
+static inline void atomic_store_byte(unsigned char* x, unsigned char y) {
+	__atomic_store_1(x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_byte(unsigned char* x, unsigned char* expected, unsigned char y) {
+	return __atomic_compare_exchange_1(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_byte(unsigned char* x, unsigned char* expected, unsigned char y) {
+	return __atomic_compare_exchange_1(x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned char atomic_exchange_byte(unsigned char* x, unsigned char y) {
+	return __atomic_exchange_1(x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_add_byte(unsigned char* x, unsigned char y) {
+	return __atomic_fetch_add_1(x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_sub_byte(unsigned char* x, unsigned char y) {
+	return __atomic_fetch_sub_1(x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_and_byte(unsigned char* x, unsigned char y) {
+	return __atomic_fetch_and_1(x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_or_byte(unsigned char* x, unsigned char y) {
+	return __atomic_fetch_or_1(x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_xor_byte(unsigned char* x, unsigned char y) {
+	return __atomic_fetch_xor_1(x, y, memory_order_seq_cst);
+}
+
+#else
+
+// Since V might be confused with "generic" C functions either we provide special versions
+// for gcc/clang, too
+static inline unsigned long long atomic_load_u64(unsigned long long* x) {
+	return atomic_load_explicit((_Atomic unsigned long long*)x, memory_order_seq_cst);
+}
+static inline void atomic_store_u64(unsigned long long* x, unsigned long long y) {
+	atomic_store_explicit((_Atomic unsigned long long*)x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_u64(unsigned long long* x, unsigned long long* expected, unsigned long long y) {
+	return (int)atomic_compare_exchange_weak_explicit((_Atomic unsigned long long*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_u64(unsigned long long* x, unsigned long long* expected, unsigned long long y) {
+	return (int)atomic_compare_exchange_strong_explicit((_Atomic unsigned long long*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_exchange_u64(unsigned long long* x, unsigned long long y) {
+	return atomic_exchange_explicit((_Atomic unsigned long long*)x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_add_u64(unsigned long long* x, unsigned long long y) {
+	return atomic_fetch_add_explicit((_Atomic unsigned long long*)x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_sub_u64(unsigned long long* x, unsigned long long y) {
+	return atomic_fetch_sub_explicit((_Atomic unsigned long long*)x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_and_u64(unsigned long long* x, unsigned long long y) {
+	return atomic_fetch_and_explicit((_Atomic unsigned long long*)x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_or_u64(unsigned long long* x, unsigned long long y) {
+	return atomic_fetch_or_explicit((_Atomic unsigned long long*)x, y, memory_order_seq_cst);
+}
+static inline unsigned long long atomic_fetch_xor_u64(unsigned long long* x, unsigned long long y) {
+	return atomic_fetch_xor_explicit((_Atomic unsigned long long*)x, y, memory_order_seq_cst);
+}
+
+
+static inline void* atomic_load_ptr(void** x) {
+	return (void*)atomic_load_explicit((_Atomic uintptr_t*)x, memory_order_seq_cst);
+}
+static inline void atomic_store_ptr(void** x, void* y) {
+	atomic_store_explicit((_Atomic uintptr_t*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_ptr(void** x, void** expected, void* y) {
+	return (int)atomic_compare_exchange_weak_explicit((_Atomic uintptr_t*)x, (unsigned long *)expected, (uintptr_t)y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_ptr(void** x, void** expected, void* y) {
+	return (int)atomic_compare_exchange_strong_explicit((_Atomic uintptr_t*)x, (unsigned long *)expected, (uintptr_t)y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline void* atomic_exchange_ptr(void** x, void* y) {
+	return (void*)atomic_exchange_explicit((_Atomic uintptr_t*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline void* atomic_fetch_add_ptr(void** x, void* y) {
+	return (void*)atomic_fetch_add_explicit((_Atomic uintptr_t*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline void* atomic_fetch_sub_ptr(void** x, void* y) {
+	return (void*)atomic_fetch_sub_explicit((_Atomic uintptr_t*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline void* atomic_fetch_and_ptr(void** x, void* y) {
+	return (void*)atomic_fetch_and_explicit((_Atomic uintptr_t*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline void* atomic_fetch_or_ptr(void** x, void* y) {
+	return (void*)atomic_fetch_or_explicit((_Atomic uintptr_t*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+static inline void* atomic_fetch_xor_ptr(void** x, void* y) {
+	return (void*)atomic_fetch_xor_explicit((_Atomic uintptr_t*)x, (uintptr_t)y, memory_order_seq_cst);
+}
+
+
+static inline unsigned atomic_load_u32(unsigned* x) {
+	return atomic_load_explicit((_Atomic unsigned*)x, memory_order_seq_cst);
+}
+static inline void atomic_store_u32(unsigned* x, unsigned y) {
+	atomic_store_explicit((_Atomic unsigned*)x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_u32(unsigned* x, unsigned* expected, unsigned y) {
+	return (int)atomic_compare_exchange_weak_explicit((_Atomic unsigned*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_u32(unsigned* x, unsigned* expected, unsigned y) {
+	return (int)atomic_compare_exchange_strong_explicit((_Atomic unsigned*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned atomic_exchange_u32(unsigned* x, unsigned y) {
+	return atomic_exchange_explicit((_Atomic unsigned*)x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_add_u32(unsigned* x, unsigned y) {
+	return atomic_fetch_add_explicit((_Atomic unsigned*)x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_sub_u32(unsigned* x, unsigned y) {
+	return atomic_fetch_sub_explicit((_Atomic unsigned*)x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_and_u32(unsigned* x, unsigned y) {
+	return atomic_fetch_and_explicit((_Atomic unsigned*)x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_or_u32(unsigned* x, unsigned y) {
+	return atomic_fetch_or_explicit((_Atomic unsigned*)x, y, memory_order_seq_cst);
+}
+static inline unsigned atomic_fetch_xor_u32(unsigned* x, unsigned y) {
+	return atomic_fetch_xor_explicit((_Atomic unsigned*)x, y, memory_order_seq_cst);
+}
+
+static inline unsigned short atomic_load_u16(unsigned short* x) {
+	return atomic_load_explicit((_Atomic unsigned short*)x, memory_order_seq_cst);
+}
+static inline void atomic_store_u16(void* x, unsigned short y) {
+	atomic_store_explicit((_Atomic unsigned short*)x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_u16(void* x, unsigned short* expected, unsigned short y) {
+	return (int)atomic_compare_exchange_weak_explicit((_Atomic unsigned short*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_u16(unsigned short* x, unsigned short* expected, unsigned short y) {
+	return (int)atomic_compare_exchange_strong_explicit((_Atomic unsigned short*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned short atomic_exchange_u16(unsigned short* x, unsigned short y) {
+	return atomic_exchange_explicit((_Atomic unsigned short*)x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_add_u16(unsigned short* x, unsigned short y) {
+	return atomic_fetch_add_explicit((_Atomic unsigned short*)x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_sub_u16(unsigned short* x, unsigned short y) {
+	return atomic_fetch_sub_explicit((_Atomic unsigned short*)x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_and_u16(unsigned short* x, unsigned short y) {
+	return atomic_fetch_and_explicit((_Atomic unsigned short*)x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_or_u16(unsigned short* x, unsigned short y) {
+	return atomic_fetch_or_explicit((_Atomic unsigned short*)x, y, memory_order_seq_cst);
+}
+static inline unsigned short atomic_fetch_xor_u16(unsigned short* x, unsigned short y) {
+	return atomic_fetch_xor_explicit((_Atomic unsigned short*)x, y, memory_order_seq_cst);
+}
+
+static inline unsigned char atomic_load_byte(unsigned char* x) {
+	return atomic_load_explicit((_Atomic unsigned char*)x, memory_order_seq_cst);
+}
+static inline void atomic_store_byte(unsigned char* x, unsigned char y) {
+	atomic_store_explicit((_Atomic unsigned char*)x, y, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_weak_byte(unsigned char* x, unsigned char* expected, unsigned char y) {
+	return (int)atomic_compare_exchange_weak_explicit((_Atomic unsigned char*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline int atomic_compare_exchange_strong_byte(unsigned char* x, unsigned char* expected, unsigned char y) {
+	return (int)atomic_compare_exchange_strong_explicit((_Atomic unsigned char*)x, expected, y, memory_order_seq_cst, memory_order_seq_cst);
+}
+static inline unsigned char atomic_exchange_byte(unsigned char* x, unsigned char y) {
+	return atomic_exchange_explicit((_Atomic unsigned char*)x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_add_byte(unsigned char* x, unsigned char y) {
+	return atomic_fetch_add_explicit((_Atomic unsigned char*)x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_sub_byte(unsigned char* x, unsigned char y) {
+	return atomic_fetch_sub_explicit((_Atomic unsigned char*)x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_and_byte(unsigned char* x, unsigned char y) {
+	return atomic_fetch_and_explicit((_Atomic unsigned char*)x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_or_byte(unsigned char* x, unsigned char y) {
+	return atomic_fetch_or_explicit((_Atomic unsigned char*)x, y, memory_order_seq_cst);
+}
+static inline unsigned char atomic_fetch_xor_byte(unsigned char* x, unsigned char y) {
+	return atomic_fetch_xor_explicit((_Atomic unsigned char*)x, y, memory_order_seq_cst);
+}
+
+#endif
+#endif
diff --git a/v_windows/v/thirdparty/stdatomic/nix/atomic_cpp.h b/v_windows/v/thirdparty/stdatomic/nix/atomic_cpp.h
new file mode 100644
index 0000000..252f5c6
--- /dev/null
+++ b/v_windows/v/thirdparty/stdatomic/nix/atomic_cpp.h
@@ -0,0 +1,541 @@
+// Source: https://android.googlesource.com/platform/bionic/+/lollipop-release/libc/include/stdatomic.h
+/*-
+ * Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org>
+ *                    David Chisnall <theraven@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef _STDATOMIC_H_
+#define _STDATOMIC_H_
+#include <sys/cdefs.h>
+#if defined(__cplusplus) && defined(_USING_LIBCXX)
+#ifdef __clang__
+#if __has_feature(cxx_atomic)
+#define _STDATOMIC_HAVE_ATOMIC
+#endif
+#else /* gcc */
+#if __GNUC_PREREQ(4, 7)
+#define _STDATOMIC_HAVE_ATOMIC
+#endif
+#endif
+#endif
+#ifdef _STDATOMIC_HAVE_ATOMIC
+/* We have a usable C++ <atomic>; use it instead.  */
+#include <atomic>
+#undef _Atomic
+/* Also defined by <atomic> for gcc.  But not used in macros. */
+/* Also a clang intrinsic.                                    */
+/* Should not be used by client code before this file is      */
+/* included.  The definitions in <atomic> themselves see      */
+/* the old definition, as they should.                        */
+/* Client code sees the following definition.                 */
+#define _Atomic(t) std::atomic<t>
+using std::atomic_bool;
+using std::atomic_char;
+using std::atomic_char16_t;
+using std::atomic_char32_t;
+using std::atomic_compare_exchange_strong;
+using std::atomic_compare_exchange_strong_explicit;
+using std::atomic_compare_exchange_weak;
+using std::atomic_compare_exchange_weak_explicit;
+using std::atomic_exchange;
+using std::atomic_exchange_explicit;
+using std::atomic_fetch_add;
+using std::atomic_fetch_add_explicit;
+using std::atomic_fetch_and;
+using std::atomic_fetch_and_explicit;
+using std::atomic_fetch_or;
+using std::atomic_fetch_or_explicit;
+using std::atomic_fetch_sub;
+using std::atomic_fetch_sub_explicit;
+using std::atomic_fetch_xor;
+using std::atomic_fetch_xor_explicit;
+using std::atomic_init;
+using std::atomic_int;
+using std::atomic_int_fast16_t;
+using std::atomic_int_fast32_t;
+using std::atomic_int_fast64_t;
+using std::atomic_int_fast8_t;
+using std::atomic_int_least16_t;
+using std::atomic_int_least32_t;
+using std::atomic_int_least64_t;
+using std::atomic_int_least8_t;
+using std::atomic_intmax_t;
+using std::atomic_intptr_t;
+using std::atomic_is_lock_free;
+using std::atomic_llong;
+using std::atomic_load;
+using std::atomic_load_explicit;
+using std::atomic_long;
+using std::atomic_ptrdiff_t;
+using std::atomic_schar;
+using std::atomic_short;
+using std::atomic_signal_fence;
+using std::atomic_size_t;
+using std::atomic_store;
+using std::atomic_store_explicit;
+using std::atomic_thread_fence;
+using std::atomic_uchar;
+using std::atomic_uint;
+using std::atomic_uint_fast16_t;
+using std::atomic_uint_fast32_t;
+using std::atomic_uint_fast64_t;
+using std::atomic_uint_fast8_t;
+using std::atomic_uint_least16_t;
+using std::atomic_uint_least32_t;
+using std::atomic_uint_least64_t;
+using std::atomic_uint_least8_t;
+using std::atomic_uintmax_t;
+using std::atomic_uintptr_t;
+using std::atomic_ullong;
+using std::atomic_ulong;
+using std::atomic_ushort;
+using std::atomic_wchar_t;
+using std::memory_order;
+using std::memory_order_acq_rel;
+using std::memory_order_consume;
+using std::memory_order_relaxed;
+using std::memory_order_release;
+using std::memory_order_seq_cst;
+#else /* <atomic> unavailable, possibly because this is C, not C++ */
+#include <sys/types.h>
+#include <stdbool.h>
+/*
+ * C: Do it ourselves.
+ * Note that the runtime representation defined here should be compatible
+ * with the C++ one, i.e. an _Atomic(T) needs to contain the same
+ * bits as a T.
+ */
+#include <stddef.h> /* For ptrdiff_t.                          */
+#include <stdint.h> /* TODO: Should pollute namespace less.    */
+#if __STDC_VERSION__ >= 201112L
+#include <uchar.h> /* For char16_t and char32_t.              */
+#endif
+#ifdef __clang__
+#if __has_extension(c_atomic) || __has_extension(cxx_atomic)
+#define __CLANG_ATOMICS
+#else
+#error "stdatomic.h does not support your compiler"
+#endif
+#if __has_builtin(__sync_swap)
+#define __HAS_BUILTIN_SYNC_SWAP
+#endif
+#else
+#if __GNUC_PREREQ(4, 7)
+#define __GNUC_ATOMICS
+#else
+#define __SYNC_ATOMICS
+#ifdef __cplusplus
+#define __ATOMICS_AVOID_DOT_INIT
+#endif
+#endif
+#endif
+/*
+ * 7.17.1 Atomic lock-free macros.
+ */
+#ifdef __GCC_ATOMIC_BOOL_LOCK_FREE
+#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_BOOL_LOCK_FREE 2 /* For all modern platforms */
+#endif
+#ifdef __GCC_ATOMIC_CHAR_LOCK_FREE
+#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_CHAR_LOCK_FREE 2
+#endif
+#ifdef __GCC_ATOMIC_CHAR16_T_LOCK_FREE
+#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_CHAR16_T_LOCK_FREE 2
+#endif
+#ifdef __GCC_ATOMIC_CHAR32_T_LOCK_FREE
+#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_CHAR32_T_LOCK_FREE 2
+#endif
+#ifdef __GCC_ATOMIC_WCHAR_T_LOCK_FREE
+#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_WCHAR_T_LOCK_FREE 2
+#endif
+#ifdef __GCC_ATOMIC_SHORT_LOCK_FREE
+#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_SHORT_LOCK_FREE 2
+#endif
+#ifdef __GCC_ATOMIC_INT_LOCK_FREE
+#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_INT_LOCK_FREE 2
+#endif
+#ifdef __GCC_ATOMIC_LONG_LOCK_FREE
+#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_LONG_LOCK_FREE 2
+#endif
+#ifdef __GCC_ATOMIC_LLONG_LOCK_FREE
+#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_LLONG_LOCK_FREE 1 /* maybe */
+#endif
+#ifdef __GCC_ATOMIC_POINTER_LOCK_FREE
+#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
+#elif defined(__SYNC_ATOMICS)
+#define ATOMIC_POINTER_LOCK_FREE 2
+#endif
+/*
+ * 7.17.2 Initialization.
+ */
+#if defined(__CLANG_ATOMICS)
+#define ATOMIC_VAR_INIT(value) (value)
+#define atomic_init(obj, value) __c11_atomic_init(obj, value)
+#else
+#ifdef __ATOMICS_AVOID_DOT_INIT
+#define ATOMIC_VAR_INIT(value) \
+    {                          \
+        value                  \
+    }
+#else
+#define ATOMIC_VAR_INIT(value) \
+    {                          \
+        .__val = (value)       \
+    }
+#endif
+#define atomic_init(obj, value) ((void)((obj)->__val = (value)))
+#endif
+/*
+ * Clang and recent GCC both provide predefined macros for the memory
+ * orderings.  If we are using a compiler that doesn't define them, use the
+ * clang values - these will be ignored in the fallback path.
+ */
+#ifndef __ATOMIC_RELAXED
+#define __ATOMIC_RELAXED 0
+#endif
+#ifndef __ATOMIC_CONSUME
+#define __ATOMIC_CONSUME 1
+#endif
+#ifndef __ATOMIC_ACQUIRE
+#define __ATOMIC_ACQUIRE 2
+#endif
+#ifndef __ATOMIC_RELEASE
+#define __ATOMIC_RELEASE 3
+#endif
+#ifndef __ATOMIC_ACQ_REL
+#define __ATOMIC_ACQ_REL 4
+#endif
+#ifndef __ATOMIC_SEQ_CST
+#define __ATOMIC_SEQ_CST 5
+#endif
+/*
+ * 7.17.3 Order and consistency.
+ *
+ * The memory_order_* constants that denote the barrier behaviour of the
+ * atomic operations.
+ * The enum values must be identical to those used by the
+ * C++ <atomic> header.
+ */
+typedef enum
+{
+    memory_order_relaxed = __ATOMIC_RELAXED,
+    memory_order_consume = __ATOMIC_CONSUME,
+    memory_order_acquire = __ATOMIC_ACQUIRE,
+    memory_order_release = __ATOMIC_RELEASE,
+    memory_order_acq_rel = __ATOMIC_ACQ_REL,
+    memory_order_seq_cst = __ATOMIC_SEQ_CST
+} memory_order;
+/*
+ * 7.17.4 Fences.
+ */
+static __inline void
+atomic_thread_fence(memory_order __order __attribute__((unused)))
+{
+#ifdef __CLANG_ATOMICS
+    __c11_atomic_thread_fence(__order);
+#elif defined(__GNUC_ATOMICS)
+    __atomic_thread_fence(__order);
+#else
+    __sync_synchronize();
+#endif
+}
+static __inline void
+atomic_signal_fence(memory_order __order __attribute__((unused)))
+{
+#ifdef __CLANG_ATOMICS
+    __c11_atomic_signal_fence(__order);
+#elif defined(__GNUC_ATOMICS)
+    __atomic_signal_fence(__order);
+#else
+    __asm volatile("" ::
+                       : "memory");
+#endif
+}
+/*
+ * 7.17.5 Lock-free property.
+ */
+#if defined(_KERNEL)
+/* Atomics in kernelspace are always lock-free. */
+#define atomic_is_lock_free(obj) \
+    ((void)(obj), (_Bool)1)
+#elif defined(__CLANG_ATOMICS)
+#define atomic_is_lock_free(obj) \
+    __c11_atomic_is_lock_free(sizeof(*(obj)))
+#elif defined(__GNUC_ATOMICS)
+#define atomic_is_lock_free(obj) \
+    __atomic_is_lock_free(sizeof((obj)->__val), &(obj)->__val)
+#else
+#define atomic_is_lock_free(obj) \
+    ((void)(obj), sizeof((obj)->__val) <= sizeof(void *))
+#endif
+/*
+ * 7.17.6 Atomic integer types.
+ */
+#ifndef __CLANG_ATOMICS
+/*
+ * No native support for _Atomic(). Place object in structure to prevent
+ * most forms of direct non-atomic access.
+ */
+#define _Atomic(T)        \
+    struct                \
+    {                     \
+        T volatile __val; \
+    }
+#endif
+typedef _Atomic(bool) atomic_bool;
+typedef _Atomic(char) atomic_char;
+typedef _Atomic(signed char) atomic_schar;
+typedef _Atomic(unsigned char) atomic_uchar;
+typedef _Atomic(short) atomic_short;
+typedef _Atomic(unsigned short) atomic_ushort;
+typedef _Atomic(int) atomic_int;
+typedef _Atomic(unsigned int) atomic_uint;
+typedef _Atomic(long) atomic_long;
+typedef _Atomic(unsigned long) atomic_ulong;
+typedef _Atomic(long long) atomic_llong;
+typedef _Atomic(unsigned long long) atomic_ullong;
+#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
+typedef _Atomic(char16_t) atomic_char16_t;
+typedef _Atomic(char32_t) atomic_char32_t;
+#endif
+typedef _Atomic(wchar_t) atomic_wchar_t;
+typedef _Atomic(int_least8_t) atomic_int_least8_t;
+typedef _Atomic(uint_least8_t) atomic_uint_least8_t;
+typedef _Atomic(int_least16_t) atomic_int_least16_t;
+typedef _Atomic(uint_least16_t) atomic_uint_least16_t;
+typedef _Atomic(int_least32_t) atomic_int_least32_t;
+typedef _Atomic(uint_least32_t) atomic_uint_least32_t;
+typedef _Atomic(int_least64_t) atomic_int_least64_t;
+typedef _Atomic(uint_least64_t) atomic_uint_least64_t;
+typedef _Atomic(int_fast8_t) atomic_int_fast8_t;
+typedef _Atomic(uint_fast8_t) atomic_uint_fast8_t;
+typedef _Atomic(int_fast16_t) atomic_int_fast16_t;
+typedef _Atomic(uint_fast16_t) atomic_uint_fast16_t;
+typedef _Atomic(int_fast32_t) atomic_int_fast32_t;
+typedef _Atomic(uint_fast32_t) atomic_uint_fast32_t;
+typedef _Atomic(int_fast64_t) atomic_int_fast64_t;
+typedef _Atomic(uint_fast64_t) atomic_uint_fast64_t;
+typedef _Atomic(intptr_t) atomic_intptr_t;
+typedef _Atomic(uintptr_t) atomic_uintptr_t;
+typedef _Atomic(size_t) atomic_size_t;
+typedef _Atomic(ptrdiff_t) atomic_ptrdiff_t;
+typedef _Atomic(intmax_t) atomic_intmax_t;
+typedef _Atomic(uintmax_t) atomic_uintmax_t;
+/*
+ * 7.17.7 Operations on atomic types.
+ */
+/*
+ * Compiler-specific operations.
+ */
+#if defined(__CLANG_ATOMICS)
+#define atomic_compare_exchange_strong_explicit(object, expected,          \
+                                                desired, success, failure) \
+    __c11_atomic_compare_exchange_strong(object, expected, desired,        \
+                                         success, failure)
+#define atomic_compare_exchange_weak_explicit(object, expected,          \
+                                              desired, success, failure) \
+    __c11_atomic_compare_exchange_weak(object, expected, desired,        \
+                                       success, failure)
+#define atomic_exchange_explicit(object, desired, order) \
+    __c11_atomic_exchange(object, desired, order)
+#define atomic_fetch_add_explicit(object, operand, order) \
+    __c11_atomic_fetch_add(object, operand, order)
+#define atomic_fetch_and_explicit(object, operand, order) \
+    __c11_atomic_fetch_and(object, operand, order)
+#define atomic_fetch_or_explicit(object, operand, order) \
+    __c11_atomic_fetch_or(object, operand, order)
+#define atomic_fetch_sub_explicit(object, operand, order) \
+    __c11_atomic_fetch_sub(object, operand, order)
+#define atomic_fetch_xor_explicit(object, operand, order) \
+    __c11_atomic_fetch_xor(object, operand, order)
+#define atomic_load_explicit(object, order) \
+    __c11_atomic_load(object, order)
+#define atomic_store_explicit(object, desired, order) \
+    __c11_atomic_store(object, desired, order)
+#elif defined(__GNUC_ATOMICS)
+#define atomic_compare_exchange_strong_explicit(object, expected,          \
+                                                desired, success, failure) \
+    __atomic_compare_exchange_n(&(object)->__val, expected,                \
+                                desired, 0, success, failure)
+#define atomic_compare_exchange_weak_explicit(object, expected,          \
+                                              desired, success, failure) \
+    __atomic_compare_exchange_n(&(object)->__val, expected,              \
+                                desired, 1, success, failure)
+#define atomic_exchange_explicit(object, desired, order) \
+    __atomic_exchange_n(&(object)->__val, desired, order)
+#define atomic_fetch_add_explicit(object, operand, order) \
+    __atomic_fetch_add(&(object)->__val, operand, order)
+#define atomic_fetch_and_explicit(object, operand, order) \
+    __atomic_fetch_and(&(object)->__val, operand, order)
+#define atomic_fetch_or_explicit(object, operand, order) \
+    __atomic_fetch_or(&(object)->__val, operand, order)
+#define atomic_fetch_sub_explicit(object, operand, order) \
+    __atomic_fetch_sub(&(object)->__val, operand, order)
+#define atomic_fetch_xor_explicit(object, operand, order) \
+    __atomic_fetch_xor(&(object)->__val, operand, order)
+#define atomic_load_explicit(object, order) \
+    __atomic_load_n(&(object)->__val, order)
+#define atomic_store_explicit(object, desired, order) \
+    __atomic_store_n(&(object)->__val, desired, order)
+#else
+#define __atomic_apply_stride(object, operand) \
+    (((__typeof__((object)->__val))0) + (operand))
+#define atomic_compare_exchange_strong_explicit(object, expected,                          \
+                                                desired, success, failure) __extension__({ \
+    __typeof__(expected) __ep = (expected);                                                \
+    __typeof__(*__ep) __e = *__ep;                                                         \
+    (void)(success);                                                                       \
+    (void)(failure);                                                                       \
+    (bool)((*__ep = __sync_val_compare_and_swap(&(object)->__val,                          \
+                                                __e, desired)) == __e);                    \
+})
+#define atomic_compare_exchange_weak_explicit(object, expected,          \
+                                              desired, success, failure) \
+    atomic_compare_exchange_strong_explicit(object, expected,            \
+                                            desired, success, failure)
+#ifdef __HAS_BUILTIN_SYNC_SWAP
+/* Clang provides a full-barrier atomic exchange - use it if available. */
+#define atomic_exchange_explicit(object, desired, order) \
+    ((void)(order), __sync_swap(&(object)->__val, desired))
+#else
+/*
+ * __sync_lock_test_and_set() is only an acquire barrier in theory (although in
+ * practice it is usually a full barrier) so we need an explicit barrier before
+ * it.
+ */
+#define atomic_exchange_explicit(object, desired, order) \
+    __extension__({                                      \
+        __typeof__(object) __o = (object);               \
+        __typeof__(desired) __d = (desired);             \
+        (void)(order);                                   \
+        __sync_synchronize();                            \
+        __sync_lock_test_and_set(&(__o)->__val, __d);    \
+    })
+#endif
+#define atomic_fetch_add_explicit(object, operand, order)  \
+    ((void)(order), __sync_fetch_and_add(&(object)->__val, \
+                                         __atomic_apply_stride(object, operand)))
+#define atomic_fetch_and_explicit(object, operand, order) \
+    ((void)(order), __sync_fetch_and_and(&(object)->__val, operand))
+#define atomic_fetch_or_explicit(object, operand, order) \
+    ((void)(order), __sync_fetch_and_or(&(object)->__val, operand))
+#define atomic_fetch_sub_explicit(object, operand, order)  \
+    ((void)(order), __sync_fetch_and_sub(&(object)->__val, \
+                                         __atomic_apply_stride(object, operand)))
+#define atomic_fetch_xor_explicit(object, operand, order) \
+    ((void)(order), __sync_fetch_and_xor(&(object)->__val, operand))
+#define atomic_load_explicit(object, order) \
+    ((void)(order), __sync_fetch_and_add(&(object)->__val, 0))
+#define atomic_store_explicit(object, desired, order) \
+    ((void)atomic_exchange_explicit(object, desired, order))
+#endif
+/*
+ * Convenience functions.
+ *
+ * Don't provide these in kernel space. In kernel space, we should be
+ * disciplined enough to always provide explicit barriers.
+ */
+#ifndef _KERNEL
+#define atomic_compare_exchange_strong(object, expected, desired) \
+    atomic_compare_exchange_strong_explicit(object, expected,     \
+                                            desired, memory_order_seq_cst, memory_order_seq_cst)
+#define atomic_compare_exchange_weak(object, expected, desired) \
+    atomic_compare_exchange_weak_explicit(object, expected,     \
+                                          desired, memory_order_seq_cst, memory_order_seq_cst)
+#define atomic_exchange(object, desired) \
+    atomic_exchange_explicit(object, desired, memory_order_seq_cst)
+#define atomic_fetch_add(object, operand) \
+    atomic_fetch_add_explicit(object, operand, memory_order_seq_cst)
+#define atomic_fetch_and(object, operand) \
+    atomic_fetch_and_explicit(object, operand, memory_order_seq_cst)
+#define atomic_fetch_or(object, operand) \
+    atomic_fetch_or_explicit(object, operand, memory_order_seq_cst)
+#define atomic_fetch_sub(object, operand) \
+    atomic_fetch_sub_explicit(object, operand, memory_order_seq_cst)
+#define atomic_fetch_xor(object, operand) \
+    atomic_fetch_xor_explicit(object, operand, memory_order_seq_cst)
+#define atomic_load(object) \
+    atomic_load_explicit(object, memory_order_seq_cst)
+#define atomic_store(object, desired) \
+    atomic_store_explicit(object, desired, memory_order_seq_cst)
+#endif /* !_KERNEL */
+/*
+ * 7.17.8 Atomic flag type and operations.
+ *
+ * XXX: Assume atomic_bool can be used as an atomic_flag. Is there some
+ * kind of compiler built-in type we could use?
+ */
+typedef struct
+{
+    atomic_bool __flag;
+} atomic_flag;
+#define ATOMIC_FLAG_INIT       \
+    {                          \
+        ATOMIC_VAR_INIT(false) \
+    }
+static __inline bool
+atomic_flag_test_and_set_explicit(volatile atomic_flag *__object,
+                                  memory_order __order)
+{
+    return (atomic_exchange_explicit(&__object->__flag, 1, __order));
+}
+static __inline void
+atomic_flag_clear_explicit(volatile atomic_flag *__object, memory_order __order)
+{
+    atomic_store_explicit(&__object->__flag, 0, __order);
+}
+#ifndef _KERNEL
+static __inline bool
+atomic_flag_test_and_set(volatile atomic_flag *__object)
+{
+    return (atomic_flag_test_and_set_explicit(__object,
+                                              memory_order_seq_cst));
+}
+static __inline void
+atomic_flag_clear(volatile atomic_flag *__object)
+{
+    atomic_flag_clear_explicit(__object, memory_order_seq_cst);
+}
+#endif /* !_KERNEL */
+#endif /* <atomic> unavailable */
+#endif /* !_STDATOMIC_H_ */