summaryrefslogtreecommitdiffstats
path: root/src/runtime/internal/syscall/asm_linux_mipsx.s
diff options
context:
space:
mode:
Diffstat (limited to 'src/runtime/internal/syscall/asm_linux_mipsx.s')
-rw-r--r--src/runtime/internal/syscall/asm_linux_mipsx.s35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/runtime/internal/syscall/asm_linux_mipsx.s b/src/runtime/internal/syscall/asm_linux_mipsx.s
new file mode 100644
index 0000000..561310f
--- /dev/null
+++ b/src/runtime/internal/syscall/asm_linux_mipsx.s
@@ -0,0 +1,35 @@
+// 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.
+
+//go:build linux && (mips || mipsle)
+
+#include "textflag.h"
+
+// func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)
+//
+// The 5th and 6th arg go at sp+16, sp+20.
+// Note that frame size of 20 means that 24 bytes gets reserved on stack.
+TEXT ·Syscall6(SB),NOSPLIT,$20-40
+ MOVW num+0(FP), R2 // syscall entry
+ MOVW a1+4(FP), R4
+ MOVW a2+8(FP), R5
+ MOVW a3+12(FP), R6
+ MOVW a4+16(FP), R7
+ MOVW a5+20(FP), R8
+ MOVW a6+24(FP), R9
+ MOVW R8, 16(R29)
+ MOVW R9, 20(R29)
+ MOVW R0, R3 // reset R3 to 0 as 1-ret SYSCALL keeps it
+ SYSCALL
+ BEQ R7, ok
+ MOVW $-1, R1
+ MOVW R1, r1+28(FP)
+ MOVW R0, r2+32(FP)
+ MOVW R2, errno+36(FP)
+ RET
+ok:
+ MOVW R2, r1+28(FP)
+ MOVW R3, r2+32(FP)
+ MOVW R0, errno+36(FP)
+ RET