blob: 1a2aad0063840e5fe68f4f236494be0256058dab [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+4(SP), R12
MOVW a1+8(SP), R0
MOVW a2+12(SP), R1
MOVW a3+16(SP), R2
SWI $0x80
BCC ok
MOVW $-1, R1
MOVW R1, r1+20(SP) // r1
MOVW $0, R2
MOVW R2, r2+24(SP) // r2
MOVW R0, errno+28(SP) // errno
BL runtime·exitsyscall(SB)
RET
ok:
MOVW R0, r1+20(SP) // r1
MOVW R1, r2+24(SP) // r2
MOVW $0, R0
MOVW R0, errno+28(SP) // 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+4(SP), R12 // syscall entry
MOVW a1+8(SP), R0
MOVW a2+12(SP), R1
MOVW a3+16(SP), R2
SWI $0x80
BCC ok1
MOVW $-1, R1
MOVW R1, r1+20(SP) // r1
MOVW $0, R2
MOVW R2, r2+24(SP) // r2
MOVW R0, errno+28(SP) // errno
RET
ok1:
MOVW R0, r1+20(SP) // r1
MOVW R1, r2+24(SP) // r2
MOVW $0, R0
MOVW R0, errno+28(SP) // 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+4(SP), R12 // syscall entry
MOVW a1+8(SP), R0
MOVW a2+12(SP), R1
MOVW a3+16(SP), R2
MOVW a4+20(SP), R3
MOVW a5+24(SP), R4
MOVW a6+28(SP), R5
SWI $0x80
BCC ok6
MOVW $-1, R1
MOVW R1, r1+32(SP) // r1
MOVW $0, R2
MOVW R2, r2+36(SP) // r2
MOVW R0, errno+40(SP) // errno
BL runtime·exitsyscall(SB)
RET
ok6:
MOVW R0, r1+32(SP) // r1
MOVW R1, r2+36(SP) // r2
MOVW $0, R0
MOVW R0, errno+40(SP) // 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+4(SP), R12 // syscall entry
MOVW a1+8(SP), R0
MOVW a2+12(SP), R1
MOVW a3+16(SP), R2
MOVW a4+20(SP), R3
MOVW a5+24(SP), R4
MOVW a6+28(SP), R5
SWI $0x80
BCC ok2
MOVW $-1, R1
MOVW R1, r1+32(SP) // r1
MOVW $0, R2
MOVW R2, r2+36(SP) // r2
MOVW R0, errno+40(SP) // errno
RET
ok2:
MOVW R0, r1+32(SP) // r1
MOVW R1, r2+36(SP) // r2
MOVW $0, R0
MOVW R0, errno+40(SP) // errno
RET
// Actually Syscall7.
TEXT ·Syscall9(SB),NOSPLIT,$0-52
BL runtime·entersyscall(SB)
MOVW syscall+4(SP), R12 // syscall entry
MOVW a1+8(SP), R0
MOVW a2+12(SP), R1
MOVW a3+16(SP), R2
MOVW a4+20(SP), R3
MOVW a5+24(SP), R4
MOVW a6+28(SP), R5
MOVW a7+32(SP), R6
SWI $0x80
BCC ok9
MOVW $-1, R1
MOVW R1, r1+44(SP) // r1
MOVW $0, R2
MOVW R2, r2+48(SP) // r2
MOVW R0, errno+52(SP) // errno
BL runtime·exitsyscall(SB)
RET
ok9:
MOVW R0, r1+44(SP) // r1
MOVW R1, r2+48(SP) // r2
MOVW $0, R0
MOVW R0, errno+52(SP) // errno
BL runtime·exitsyscall(SB)
RET