1 files changed, 14 insertions, 0 deletions
diff --git a/vendor/modernc.org/libc/libc_amd64.go b/vendor/modernc.org/libc/libc_amd64.go
index c17aee5c1..de3e34974 100644
--- a/vendor/modernc.org/libc/libc_amd64.go
+++ b/vendor/modernc.org/libc/libc_amd64.go
@@ -22,3 +22,17 @@ func a_load_16(addr uintptr) uint32 {
 
 	return uint32(*(*uint16)(unsafe.Pointer(addr)))
 }
+
+// Byte sores are atomic on this CPU.
+func a_store_8(addr uintptr, b byte) {
+	*(*byte)(unsafe.Pointer(addr)) = b
+}
+
+// int16 stores are atomic on this CPU when properly aligned.
+func a_store_16(addr uintptr, n uint16) {
+	if addr&1 != 0 {
+		panic(fmt.Errorf("unaligned atomic 16 bit access at %#0x", addr))
+	}
+
+	*(*uint16)(unsafe.Pointer(addr)) = n
+}