1// Copyright 2022 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build linux && (mips || mipsle)
6
7#include "textflag.h"
8
9// func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)
10//
11// The 5th and 6th arg go at sp+16, sp+20.
12// Note that frame size of 20 means that 24 bytes gets reserved on stack.
13TEXT ·Syscall6(SB),NOSPLIT,$20-40
14 MOVW num+0(FP), R2 // syscall entry
15 MOVW a1+4(FP), R4
16 MOVW a2+8(FP), R5
17 MOVW a3+12(FP), R6
18 MOVW a4+16(FP), R7
19 MOVW a5+20(FP), R8
20 MOVW a6+24(FP), R9
21 MOVW R8, 16(R29)
22 MOVW R9, 20(R29)
23 MOVW R0, R3 // reset R3 to 0 as 1-ret SYSCALL keeps it
24 SYSCALL
25 BEQ R7, ok
26 MOVW $-1, R1
27 MOVW R1, r1+28(FP)
28 MOVW R0, r2+32(FP)
29 MOVW R2, errno+36(FP)
30 RET
31ok:
32 MOVW R2, r1+28(FP)
33 MOVW R3, r2+32(FP)
34 MOVW R0, errno+36(FP)
35 RET
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