| // Copyright 2013 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, NetBSD | |
| // | |
| // func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32); | |
| // func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32); | |
| // func Syscall9(trap int32, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int32) | |
| TEXT 路Syscall(SB),NOSPLIT,$0-28 | |
| BL runtime路entersyscall(SB) | |
| MOVW trap+0(FP), R0 // sigcall num | |
| MOVW a1+4(FP), R1 // a1 | |
| MOVW a2+8(FP), R2 // a2 | |
| MOVW a3+12(FP), R3 // 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) // err | |
| BL runtime路exitsyscall(SB) | |
| RET | |
| error: | |
| MOVW $-1, R3 | |
| MOVW R3, r1+16(FP) // r1 | |
| MOVW R2, r2+20(FP) // r2 | |
| MOVW R0, err+24(FP) // err | |
| BL runtime路exitsyscall(SB) | |
| RET | |
| TEXT 路Syscall6(SB),NOSPLIT,$0-40 | |
| BL runtime路entersyscall(SB) | |
| MOVW trap+0(FP), R0 // sigcall num | |
| MOVW a1+4(FP), R1 // a1 | |
| MOVW a2+8(FP), R2 // a2 | |
| MOVW a3+12(FP), R3 // a3 | |
| MOVW R13, R4 | |
| MOVW $a4+16(FP), R13 // a4 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) // err | |
| BL runtime路exitsyscall(SB) | |
| RET | |
| error6: | |
| MOVW $-1, R3 | |
| MOVW R3, r1+28(FP) // r1 | |
| MOVW R2, r2+32(FP) // r2 | |
| MOVW R0, err+36(FP) // err | |
| BL runtime路exitsyscall(SB) | |
| RET | |
| TEXT 路Syscall9(SB),NOSPLIT,$0-52 | |
| BL runtime路entersyscall(SB) | |
| MOVW num+0(FP), R0 // sigcall num | |
| MOVW a1+4(FP), R1 // a1 | |
| MOVW a2+8(FP), R2 // a2 | |
| MOVW a3+12(FP), R3 // a3 | |
| MOVW R13, R4 | |
| MOVW $a4+16(FP), R13 // a4 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) // err | |
| BL runtime路exitsyscall(SB) | |
| RET | |
| error9: | |
| MOVW $-1, R3 | |
| MOVW R3, r1+40(FP) // r1 | |
| MOVW R2, r2+44(FP) // r2 | |
| MOVW R0, err+48(FP) // err | |
| BL runtime路exitsyscall(SB) | |
| RET | |
| TEXT 路RawSyscall(SB),NOSPLIT,$0-28 | |
| MOVW trap+0(FP), R0 // sigcall num | |
| MOVW a1+4(FP), R1 // a1 | |
| MOVW a2+8(FP), R2 // a2 | |
| MOVW a3+12(FP), R3 // 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) // err | |
| RET | |
| errorr: | |
| MOVW $-1, R3 | |
| MOVW R3, r1+16(FP) // r1 | |
| MOVW R2, r2+20(FP) // r2 | |
| MOVW R0, err+24(FP) // err | |
| RET | |
| TEXT 路RawSyscall6(SB),NOSPLIT,$0-40 | |
| MOVW trap+0(FP), R0 // sigcall num | |
| MOVW a1+4(FP), R1 // a1 | |
| MOVW a2+8(FP), R2 // a2 | |
| MOVW a3+12(FP), R3 // a3 | |
| MOVW R13, R4 | |
| MOVW $a4+16(FP), R13 // a4 to a9 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) // err | |
| RET | |
| errorr6: | |
| MOVW $-1, R3 | |
| MOVW R3, r1+28(FP) // r1 | |
| MOVW R2, r2+32(FP) // r2 | |
| MOVW R0, err+36(FP) // err | |
| RET | |