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https://github.com/golang/go
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689fa9cc28
Found by vet. Change-Id: Idf910405566816ddce6781c8e99f90b59f33d63c Reviewed-on: https://go-review.googlesource.com/37308 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
143 lines
3.1 KiB
ArmAsm
143 lines
3.1 KiB
ArmAsm
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build linux
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// +build mips mipsle
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#include "textflag.h"
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#include "funcdata.h"
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//
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// System calls for mips, Linux
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//
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// func Syscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr);
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TEXT ·Syscall(SB),NOSPLIT,$0-28
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JAL runtime·entersyscall(SB)
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MOVW a1+4(FP), R4
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MOVW a2+8(FP), R5
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MOVW a3+12(FP), R6
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MOVW R0, R7
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MOVW trap+0(FP), R2 // syscall entry
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SYSCALL
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BEQ R7, ok
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MOVW $-1, R1
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MOVW R1, r1+16(FP) // r1
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MOVW R0, r2+20(FP) // r2
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MOVW R2, err+24(FP) // errno
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JAL runtime·exitsyscall(SB)
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RET
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ok:
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MOVW R2, r1+16(FP) // r1
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MOVW R3, r2+20(FP) // r2
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MOVW R0, err+24(FP) // errno
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JAL runtime·exitsyscall(SB)
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RET
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// func Syscall6(trap trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);
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// 5th and 6th arg go at sp+16, sp+20.
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// Note that frame size of 20 means that 24 bytes gets reserved on stack.
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TEXT ·Syscall6(SB),NOSPLIT,$20-40
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NO_LOCAL_POINTERS
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JAL runtime·entersyscall(SB)
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MOVW a1+4(FP), R4
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MOVW a2+8(FP), R5
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MOVW a3+12(FP), R6
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MOVW a4+16(FP), R7
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MOVW a5+20(FP), R8
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MOVW a6+24(FP), R9
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MOVW R8, 16(R29)
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MOVW R9, 20(R29)
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MOVW trap+0(FP), R2 // syscall entry
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SYSCALL
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BEQ R7, ok6
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MOVW $-1, R1
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MOVW R1, r1+28(FP) // r1
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MOVW R0, r2+32(FP) // r2
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MOVW R2, err+36(FP) // errno
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JAL runtime·exitsyscall(SB)
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RET
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ok6:
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MOVW R2, r1+28(FP) // r1
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MOVW R3, r2+32(FP) // r2
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MOVW R0, err+36(FP) // errno
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JAL runtime·exitsyscall(SB)
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RET
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// func Syscall9(trap trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr);
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// Actually Syscall8 but the rest of the code expects it to be named Syscall9.
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TEXT ·Syscall9(SB),NOSPLIT,$28-52
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NO_LOCAL_POINTERS
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JAL runtime·entersyscall(SB)
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MOVW a1+4(FP), R4
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MOVW a2+8(FP), R5
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MOVW a3+12(FP), R6
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MOVW a4+16(FP), R7
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MOVW a5+20(FP), R8
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MOVW a6+24(FP), R9
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MOVW a7+28(FP), R10
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MOVW a8+32(FP), R11
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MOVW R8, 16(R29)
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MOVW R9, 20(R29)
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MOVW R10, 24(R29)
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MOVW R11, 28(R29)
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MOVW trap+0(FP), R2 // syscall entry
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SYSCALL
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BEQ R7, ok9
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MOVW $-1, R1
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MOVW R1, r1+40(FP) // r1
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MOVW R0, r2+44(FP) // r2
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MOVW R2, err+48(FP) // errno
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JAL runtime·exitsyscall(SB)
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RET
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ok9:
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MOVW R2, r1+40(FP) // r1
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MOVW R3, r2+44(FP) // r2
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MOVW R0, err+48(FP) // errno
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JAL runtime·exitsyscall(SB)
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RET
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TEXT ·RawSyscall(SB),NOSPLIT,$24-28
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MOVW a1+4(FP), R4
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MOVW a2+8(FP), R5
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MOVW a3+12(FP), R6
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MOVW trap+0(FP), R2 // syscall entry
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SYSCALL
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BEQ R7, ok1
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MOVW $-1, R1
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MOVW R1, r1+16(FP) // r1
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MOVW R0, r2+20(FP) // r2
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MOVW R2, err+24(FP) // errno
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RET
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ok1:
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MOVW R2, r1+16(FP) // r1
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MOVW R3, r2+20(FP) // r2
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MOVW R0, err+24(FP) // errno
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RET
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TEXT ·RawSyscall6(SB),NOSPLIT,$20-40
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MOVW a1+4(FP), R4
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MOVW a2+8(FP), R5
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MOVW a3+12(FP), R6
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MOVW a4+16(FP), R7
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MOVW a5+20(FP), R8
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MOVW a6+24(FP), R9
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MOVW R8, 16(R29)
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MOVW R9, 20(R29)
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MOVW trap+0(FP), R2 // syscall entry
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SYSCALL
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BEQ R7, ok2
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MOVW $-1, R1
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MOVW R1, r1+28(FP) // r1
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MOVW R0, r2+32(FP) // r2
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MOVW R2, err+36(FP) // errno
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RET
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ok2:
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MOVW R2, r1+28(FP) // r1
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MOVW R3, r2+32(FP) // r2
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MOVW R0, err+36(FP) // errno
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RET
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