| // 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" | |
| #include "funcdata.h" | |
| #include "../runtime/syscall_nacl.h" | |
| // | |
| // System call support for ARM, Native Client | |
| // | |
| #define NACL_SYSCALL(code) \ | |
| MOVW $(0x10000 + ((code)<<5)), R8; BL (R8) | |
| #define NACL_SYSJMP(code) \ | |
| MOVW $(0x10000 + ((code)<<5)), R8; B (R8) | |
| TEXT ·Syscall(SB),NOSPLIT,$0-28 | |
| BL runtime·entersyscall(SB) | |
| MOVW trap+0(FP), R8 | |
| MOVW a1+4(FP), R0 | |
| MOVW a2+8(FP), R1 | |
| MOVW a3+12(FP), R2 | |
| // more args would use R3, and then stack. | |
| MOVW $0x10000, R7 | |
| ADD R8<<5, R7 | |
| BL (R7) | |
| CMP $0, R0 | |
| BGE ok | |
| MOVW $-1, R1 | |
| MOVW R1, r1+16(FP) | |
| MOVW R1, r2+20(FP) | |
| RSB $0, R0 | |
| MOVW R0, err+24(FP) | |
| BL runtime·exitsyscall(SB) | |
| RET | |
| ok: | |
| MOVW R0, r1+16(FP) | |
| MOVW R1, r2+20(FP) | |
| MOVW $0, R2 | |
| MOVW R2, err+24(FP) | |
| BL runtime·exitsyscall(SB) | |
| RET |