| // Copyright 2012 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" |
| #include "funcdata.h" |
| |
| // |
| // System call support for ARM, FreeBSD |
| // |
| |
| // func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, errno uintptr); |
| // func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr); |
| // func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, errno uintptr) |
| |
| TEXT ·Syscall(SB),NOSPLIT,$0-28 |
| BL runtime·entersyscall(SB) |
| MOVW trap+0(FP), R7 // syscall number |
| MOVW a1+4(FP), R0 // a1 |
| MOVW a2+8(FP), R1 // a2 |
| MOVW a3+12(FP), R2 // a3 |
| SWI $0 // syscall |
| MOVW $0, R2 |
| BCS error |
| MOVW R0, r1+16(FP) // r1 |
| MOVW R1, r2+20(FP) // r2 |
| MOVW R2, err+24(FP) // errno |
| BL runtime·exitsyscall(SB) |
| RET |
| error: |
| MOVW $-1, R3 |
| MOVW R3, r1+16(FP) // r1 |
| MOVW R2, r2+20(FP) // r2 |
| MOVW R0, err+24(FP) // errno |
| BL runtime·exitsyscall(SB) |
| RET |
| |
| TEXT ·Syscall6(SB),NOSPLIT,$0-40 |
| BL runtime·entersyscall(SB) |
| MOVW trap+0(FP), R7 // syscall number |
| MOVW a1+4(FP), R0 // a1 |
| MOVW a2+8(FP), R1 // a2 |
| MOVW a3+12(FP), R2 // a3 |
| MOVW a4+16(FP), R3 // a4 |
| MOVW R13, R4 |
| MOVW $a5+20(FP), R13 // a5 to a6 are passed on stack |
| SWI $0 // syscall |
| MOVW R4, R13 |
| MOVW $0, R2 |
| BCS error6 |
| MOVW R0, r1+28(FP) // r1 |
| MOVW R1, r2+32(FP) // r2 |
| MOVW R2, err+36(FP) // errno |
| BL runtime·exitsyscall(SB) |
| RET |
| error6: |
| MOVW $-1, R3 |
| MOVW R3, r1+28(FP) // r1 |
| MOVW R2, r2+32(FP) // r2 |
| MOVW R0, err+36(FP) // errno |
| BL runtime·exitsyscall(SB) |
| RET |
| |
| TEXT ·Syscall9(SB),NOSPLIT,$0-52 |
| BL runtime·entersyscall(SB) |
| MOVW num+0(FP), R7 // syscall number |
| MOVW a1+4(FP), R0 // a1 |
| MOVW a2+8(FP), R1 // a2 |
| MOVW a3+12(FP), R2 // a3 |
| MOVW a4+16(FP), R3 // a4 |
| MOVW R13, R4 |
| MOVW $a5+20(FP), R13 // a5 to a9 are passed on stack |
| SWI $0 // syscall |
| MOVW R4, R13 |
| MOVW $0, R2 |
| BCS error9 |
| MOVW R0, r1+40(FP) // r1 |
| MOVW R1, r2+44(FP) // r2 |
| MOVW R2, err+48(FP) // errno |
| BL runtime·exitsyscall(SB) |
| RET |
| error9: |
| MOVW $-1, R3 |
| MOVW R3, r1+40(FP) // r1 |
| MOVW R2, r2+44(FP) // r2 |
| MOVW R0, err+48(FP) // errno |
| BL runtime·exitsyscall(SB) |
| RET |
| |
| TEXT ·RawSyscall(SB),NOSPLIT,$0-28 |
| MOVW trap+0(FP), R7 // syscall number |
| MOVW a1+4(FP), R0 // a1 |
| MOVW a2+8(FP), R1 // a2 |
| MOVW a3+12(FP), R2 // a3 |
| SWI $0 // syscall |
| MOVW $0, R2 |
| BCS errorr |
| MOVW R0, r1+16(FP) // r1 |
| MOVW R1, r2+20(FP) // r2 |
| MOVW R2, err+24(FP) // errno |
| RET |
| errorr: |
| MOVW $-1, R3 |
| MOVW R3, r1+16(FP) // r1 |
| MOVW R2, r2+20(FP) // r2 |
| MOVW R0, err+24(FP) // errno |
| RET |
| |
| TEXT ·RawSyscall6(SB),NOSPLIT,$0-40 |
| MOVW trap+0(FP), R7 // syscall number |
| MOVW a1+4(FP), R0 // a1 |
| MOVW a2+8(FP), R1 // a2 |
| MOVW a3+12(FP), R2 // a3 |
| MOVW a4+16(FP), R3 // a4 |
| MOVW R13, R4 |
| MOVW $a5+20(FP), R13 // a5 to a6 are passed on stack |
| SWI $0 // syscall |
| MOVW R4, R13 |
| MOVW $0, R2 |
| BCS errorr6 |
| MOVW R0, r1+28(FP) // r1 |
| MOVW R1, r2+32(FP) // r2 |
| MOVW R2, err+36(FP) // errno |
| RET |
| errorr6: |
| MOVW $-1, R3 |
| MOVW R3, r1+28(FP) // r1 |
| MOVW R2, r2+32(FP) // r2 |
| MOVW R0, err+36(FP) // errno |
| RET |
