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// Copyright 2016 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"
#include "funcdata.h"
//
// System calls for mips, Linux
//
// func Syscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr);
TEXT ·Syscall(SB),NOSPLIT,$0-28
JAL runtime·entersyscall(SB)
MOVW a1+4(FP), R4
MOVW a2+8(FP), R5
MOVW a3+12(FP), R6
MOVW R0, R7
MOVW trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok
MOVW $-1, R1
MOVW R1, r1+16(FP) // r1
MOVW R0, r2+20(FP) // r2
MOVW R2, err+24(FP) // errno
JAL runtime·exitsyscall(SB)
RET
ok:
MOVW R2, r1+16(FP) // r1
MOVW R3, r2+20(FP) // r2
MOVW R0, err+24(FP) // errno
JAL runtime·exitsyscall(SB)
RET
// func Syscall6(trap trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);
// 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
NO_LOCAL_POINTERS
JAL runtime·entersyscall(SB)
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 trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok6
MOVW $-1, R1
MOVW R1, r1+28(FP) // r1
MOVW R0, r2+32(FP) // r2
MOVW R2, err+36(FP) // errno
JAL runtime·exitsyscall(SB)
RET
ok6:
MOVW R2, r1+28(FP) // r1
MOVW R3, r2+32(FP) // r2
MOVW R0, err+36(FP) // errno
JAL runtime·exitsyscall(SB)
RET
// func Syscall9(trap trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr);
// Actually Syscall8 but the rest of the code expects it to be named Syscall9.
TEXT ·Syscall9(SB),NOSPLIT,$28-52
NO_LOCAL_POINTERS
JAL runtime·entersyscall(SB)
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 a7+28(FP), R10
MOVW a8+32(FP), R11
MOVW R8, 16(R29)
MOVW R9, 20(R29)
MOVW R10, 24(R29)
MOVW R11, 28(R29)
MOVW trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok9
MOVW $-1, R1
MOVW R1, r1+40(FP) // r1
MOVW R0, r2+44(FP) // r2
MOVW R2, err+48(FP) // errno
JAL runtime·exitsyscall(SB)
RET
ok9:
MOVW R2, r1+40(FP) // r1
MOVW R3, r2+44(FP) // r2
MOVW R0, err+48(FP) // errno
JAL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$24-28
MOVW a1+4(FP), R4
MOVW a2+8(FP), R5
MOVW a3+12(FP), R6
MOVW trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok1
MOVW $-1, R1
MOVW R1, r1+16(FP) // r1
MOVW R0, r2+20(FP) // r2
MOVW R2, err+24(FP) // errno
RET
ok1:
MOVW R2, r1+16(FP) // r1
MOVW R3, r2+20(FP) // r2
MOVW R0, err+24(FP) // errno
RET
TEXT ·RawSyscall6(SB),NOSPLIT,$20-40
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 trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok2
MOVW $-1, R1
MOVW R1, r1+28(FP) // r1
MOVW R0, r2+32(FP) // r2
MOVW R2, err+36(FP) // errno
RET
ok2:
MOVW R2, r1+28(FP) // r1
MOVW R3, r2+32(FP) // r2
MOVW R0, err+36(FP) // errno
RET
// func rawVforkSyscall(trap, a1 uintptr) (r1, err uintptr)
TEXT ·rawVforkSyscall(SB),NOSPLIT|NOFRAME,$0-16
MOVW a1+4(FP), R4
MOVW R0, R5
MOVW R0, R6
MOVW trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok
MOVW $-1, R1
MOVW R1, r1+8(FP) // r1
MOVW R2, err+12(FP) // errno
RET
ok:
MOVW R2, r1+8(FP) // r1
MOVW R0, err+12(FP) // errno
RET
TEXT ·rawSyscallNoError(SB),NOSPLIT,$20-24
MOVW a1+4(FP), R4
MOVW a2+8(FP), R5
MOVW a3+12(FP), R6
MOVW trap+0(FP), R2 // syscall entry
SYSCALL
MOVW R2, r1+16(FP) // r1
MOVW R3, r2+20(FP) // r2
RET
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