1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 #include "textflag.h" 6 #include "funcdata.h" 7 #include "../runtime/syscall_nacl.h" 8 9 // 10 // System call support for ARM, Native Client 11 // 12 13 #define NACL_SYSCALL(code) \ 14 MOVW $(0x10000 + ((code)<<5)), R8; BL (R8) 15 16 #define NACL_SYSJMP(code) \ 17 MOVW $(0x10000 + ((code)<<5)), R8; B (R8) 18 19 TEXT Syscall(SB),NOSPLIT,$0-28 20 BL runtimeentersyscall(SB) 21 MOVW trap+0(FP), R8 22 MOVW a1+4(FP), R0 23 MOVW a2+8(FP), R1 24 MOVW a3+12(FP), R2 25 // more args would use R3, and then stack. 26 MOVW $0x10000, R7 27 ADD R8<<5, R7 28 BL (R7) 29 CMP $0, R0 30 BGE ok 31 MOVW $-1, R1 32 MOVW R1, r1+16(FP) 33 MOVW R1, r2+20(FP) 34 RSB $0, R0 35 MOVW R0, err+24(FP) 36 BL runtimeexitsyscall(SB) 37 RET 38 ok: 39 MOVW R0, r1+16(FP) 40 MOVW R1, r2+20(FP) 41 MOVW $0, R2 42 MOVW R2, err+24(FP) 43 BL runtimeexitsyscall(SB) 44 RET 45
