diff options
Diffstat (limited to 'src/syscall/asm_nacl_arm.s')
| -rw-r--r-- | src/syscall/asm_nacl_arm.s | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/syscall/asm_nacl_arm.s b/src/syscall/asm_nacl_arm.s new file mode 100644 index 000000000..78e10bf7a --- /dev/null +++ b/src/syscall/asm_nacl_arm.s @@ -0,0 +1,44 @@ +// 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·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 |