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Copy pathasm_openbsd_mips64.s
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asm_openbsd_mips64.s
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// Copyright 2020 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 Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64);
TEXT ·Syscall(SB),NOSPLIT,$0-56
JAL runtime·entersyscall(SB)
MOVV a1+8(FP), R4
MOVV a2+16(FP), R5
MOVV a3+24(FP), R6
MOVV R0, R7
MOVV R0, R8
MOVV R0, R9
MOVV trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok
MOVV $-1, R1
MOVV R1, r1+32(FP) // r1
MOVV R0, r2+40(FP) // r2
MOVV R2, err+48(FP) // errno
JAL runtime·exitsyscall(SB)
RET
ok:
MOVV R2, r1+32(FP) // r1
MOVV R3, r2+40(FP) // r2
MOVV R0, err+48(FP) // errno
JAL runtime·exitsyscall(SB)
RET
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JAL runtime·entersyscall(SB)
MOVV a1+8(FP), R4
MOVV a2+16(FP), R5
MOVV a3+24(FP), R6
MOVV a4+32(FP), R7
MOVV a5+40(FP), R8
MOVV a6+48(FP), R9
MOVV trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok6
MOVV $-1, R1
MOVV R1, r1+56(FP) // r1
MOVV R0, r2+64(FP) // r2
MOVV R2, err+72(FP) // errno
JAL runtime·exitsyscall(SB)
RET
ok6:
MOVV R2, r1+56(FP) // r1
MOVV R3, r2+64(FP) // r2
MOVV R0, err+72(FP) // errno
JAL runtime·exitsyscall(SB)
RET
// func Syscall9(trap int64, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int64);
// The openbsd/mips64 kernel only accepts eight syscall arguments, except
// for SYS_syscall, where an additional argument can be passed on the stack.
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JAL runtime·entersyscall(SB)
MOVV num+0(FP), R2 // syscall entry
MOVV a1+8(FP), R4
MOVV a2+16(FP), R5
MOVV a3+24(FP), R6
MOVV a4+32(FP), R7
MOVV a5+40(FP), R8
MOVV a6+48(FP), R9
MOVV a7+56(FP), R10
MOVV a8+64(FP), R11
MOVV a9+72(FP), R12
SUBVU $16, R29
MOVV R12, 0(R29) // arg 9 - only used for SYS_syscall.
SYSCALL
ADDV $16, R29
BEQ R7, ok9
MOVV $-1, R1
MOVV R1, r1+80(FP) // r1
MOVV R0, r2+88(FP) // r2
MOVV R2, err+96(FP) // errno
JAL runtime·exitsyscall(SB)
RET
ok9:
MOVV R2, r1+80(FP) // r1
MOVV R3, r2+88(FP) // r2
MOVV R0, err+96(FP) // errno
CALL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
MOVV a1+8(FP), R4
MOVV a2+16(FP), R5
MOVV a3+24(FP), R6
MOVV R0, R7
MOVV R0, R8
MOVV R0, R9
MOVV trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok1
MOVV $-1, R1
MOVV R1, r1+32(FP) // r1
MOVV R0, r2+40(FP) // r2
MOVV R2, err+48(FP) // errno
RET
ok1:
MOVV R2, r1+32(FP) // r1
MOVV R3, r2+40(FP) // r2
MOVV R0, err+48(FP) // errno
RET
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
MOVV a1+8(FP), R4
MOVV a2+16(FP), R5
MOVV a3+24(FP), R6
MOVV a4+32(FP), R7
MOVV a5+40(FP), R8
MOVV a6+48(FP), R9
MOVV trap+0(FP), R2 // syscall entry
SYSCALL
BEQ R7, ok2
MOVV $-1, R1
MOVV R1, r1+56(FP) // r1
MOVV R0, r2+64(FP) // r2
MOVV R2, err+72(FP) // errno
RET
ok2:
MOVV R2, r1+56(FP) // r1
MOVV R3, r2+64(FP) // r2
MOVV R0, err+72(FP) // errno
RET