Initial project import

tools/v/thirdparty/stdatomic/nix/atomic.S

@@ -0,0 +1,94 @@
+/* ---------------------------------------------- */
+#if defined __i386__
+
+#define endbr32
+
+        .text
+
+        .global _V_atomic_thread_fence
+        .type   _V_atomic_thread_fence, %function
+_V_atomic_thread_fence:
+        endbr32
+        lock orl $0x0,(%esp)
+        ret
+
+#endif //__i386__
+
+/* ---------------------------------------------- */
+#if defined __x86_64__ && !defined _WIN32
+#define endbr64
+        .text
+        .global __atomic_thread_fence
+        .type   __atomic_thread_fence, %function
+__atomic_thread_fence:
+        endbr64
+        lock orq $0x0,(%rsp)
+        ret
+#endif //__x86_64__ && !_WIN32
+
+/* ---------------------------------------------- */
+#if defined __x86_64__ && defined _WIN32
+        .text
+
+        .global _V_atomic_thread_fence
+        .type   _V_atomic_thread_fence, %function
+_V_atomic_thread_fence:
+        lock orq $0x0,(%rsp)
+        ret
+
+#endif //__x86_64__ && _WIN32
+
+/* ---------------------------------------------- */
+#if defined __arm__
+        .text
+#ifndef __TINYC__
+        .arch   armv6k
+        .syntax unified
+#endif
+
+        .global _V_atomic_thread_fence
+        .type   _V_atomic_thread_fence, %function
+_V_atomic_thread_fence:
+#ifdef __TINYC__
+        .int 0xee070fba
+        .int 0xe12fff1e
+#else
+        mcr     p15, #0, r0, c7, c10, #5
+        bx  lr
+
+#endif
+#endif //__arm__
+
+/* ---------------------------------------------- */
+#if defined __aarch64__
+        .text
+
+        .global _V_atomic_thread_fence
+        .type   _V_atomic_thread_fence, %function
+_V_atomic_thread_fence:
+#ifdef __TINYC__
+        .int 0xd5033bbf
+        .int 0xd65f03c0
+#else
+        dmb ish
+        ret
+
+#endif
+#endif //__aarch64__
+
+/* ---------------------------------------------- */
+#if defined __riscv
+        .text
+
+        .global _V_atomic_thread_fence
+        .type   _V_atomic_thread_fence, %function
+_V_atomic_thread_fence:
+#ifdef __TINYC__
+        .int 0x0330000f
+        .short 0x8082
+#else
+        fence   rw,rw
+        ret
+
+#endif
+#endif //__riscv