1 files changed, 29 insertions, 0 deletions
diff --git a/src/runtime/internal/syscall/asm_linux_riscv64.s b/src/runtime/internal/syscall/asm_linux_riscv64.s
new file mode 100644
index 0000000000..a8652fdd6b
--- /dev/null
+++ b/src/runtime/internal/syscall/asm_linux_riscv64.s
@@ -0,0 +1,29 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+	MOV	num+0(FP), A7	// syscall entry
+	MOV	a1+8(FP), A0
+	MOV	a2+16(FP), A1
+	MOV	a3+24(FP), A2
+	MOV	a4+32(FP), A3
+	MOV	a5+40(FP), A4
+	MOV	a6+48(FP), A5
+	ECALL
+	MOV	$-4096, T0
+	BLTU	T0, A0, err
+	MOV	A0, r1+56(FP)
+	MOV	A1, r2+64(FP)
+	MOV	ZERO, errno+72(FP)
+	RET
+err:
+	MOV	$-1, T0
+	MOV	T0, r1+56(FP)
+	MOV	ZERO, r2+64(FP)
+	SUB	A0, ZERO, A0
+	MOV	A0, errno+72(FP)
+	RET