blob: cf3f9b712d07b5f034dbbfe8c5c189524353e845 [file] [log] [blame]
// Copyright 2014 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"
//
// System call support for ARM, Darwin
//
// func Syscall(syscall uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT ·Syscall(SB),NOSPLIT,$0-28
BL runtime·entersyscall(SB)
MOVW syscall+0(FP), R12
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
SWI $0x80
BCC ok
MOVW $-1, R1
MOVW R1, r1+16(FP) // r1
MOVW $0, R2
MOVW R2, r2+20(FP) // r2
MOVW R0, errno+24(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok:
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW $0, R0
MOVW R0, errno+24(FP) // errno
BL runtime·exitsyscall(SB)
RET
// func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
MOVW syscall+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
SWI $0x80
BCC ok1
MOVW $-1, R1
MOVW R1, r1+16(FP) // r1
MOVW $0, R2
MOVW R2, r2+20(FP) // r2
MOVW R0, errno+24(FP) // errno
RET
ok1:
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW $0, R0
MOVW R0, errno+24(FP) // errno
RET
// func Syscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
BL runtime·entersyscall(SB)
MOVW syscall+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
MOVW a4+16(FP), R3
MOVW a5+20(FP), R4
MOVW a6+24(FP), R5
SWI $0x80
BCC ok6
MOVW $-1, R1
MOVW R1, r1+28(FP) // r1
MOVW $0, R2
MOVW R2, r2+32(FP) // r2
MOVW R0, errno+36(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok6:
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW $0, R0
MOVW R0, errno+36(FP) // errno
BL runtime·exitsyscall(SB)
RET
// func RawSyscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
MOVW trap+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
MOVW a4+16(FP), R3
MOVW a5+20(FP), R4
MOVW a6+24(FP), R5
SWI $0x80
BCC ok2
MOVW $-1, R1
MOVW R1, r1+28(FP) // r1
MOVW $0, R2
MOVW R2, r2+32(FP) // r2
MOVW R0, errno+36(FP) // errno
RET
ok2:
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW $0, R0
MOVW R0, errno+36(FP) // errno
RET
// Actually Syscall7.
TEXT ·Syscall9(SB),NOSPLIT,$0-52
BL runtime·entersyscall(SB)
MOVW syscall+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
MOVW a4+16(FP), R3
MOVW a5+20(FP), R4
MOVW a6+24(FP), R5
MOVW a7+28(FP), R6
SWI $0x80
BCC ok9
MOVW $-1, R1
MOVW R1, r1+40(FP) // r1
MOVW $0, R2
MOVW R2, r2+44(FP) // r2
MOVW R0, errno+48(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok9:
MOVW R0, r1+40(FP) // r1
MOVW R1, r2+44(FP) // r2
MOVW $0, R0
MOVW R0, errno+48(FP) // errno
BL runtime·exitsyscall(SB)
RET