Text file src/syscall/asm_netbsd_arm.s
1 // Copyright 2013 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
8 //
9 // System call support for ARM, NetBSD
10 //
11
12 // func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32);
13 // func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32);
14 // func Syscall9(trap int32, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int32)
15
16 TEXT ·Syscall(SB),NOSPLIT,$0-28
17 BL runtime·entersyscall(SB)
18 MOVW trap+0(FP), R0 // sigcall num
19 MOVW a1+4(FP), R1 // a1
20 MOVW a2+8(FP), R2 // a2
21 MOVW a3+12(FP), R3 // a3
22 SWI $0 // syscall
23 MOVW $0, R2
24 BCS error
25 MOVW R0, r1+16(FP) // r1
26 MOVW R1, r2+20(FP) // r2
27 MOVW R2, err+24(FP) // err
28 BL runtime·exitsyscall(SB)
29 RET
30 error:
31 MOVW $-1, R3
32 MOVW R3, r1+16(FP) // r1
33 MOVW R2, r2+20(FP) // r2
34 MOVW R0, err+24(FP) // err
35 BL runtime·exitsyscall(SB)
36 RET
37
38 TEXT ·Syscall6(SB),NOSPLIT,$0-40
39 BL runtime·entersyscall(SB)
40 MOVW trap+0(FP), R0 // sigcall num
41 MOVW a1+4(FP), R1 // a1
42 MOVW a2+8(FP), R2 // a2
43 MOVW a3+12(FP), R3 // a3
44 MOVW R13, R4
45 MOVW $a4+16(FP), R13 // a4 to a6 are passed on stack
46 SWI $0 // syscall
47 MOVW R4, R13
48 MOVW $0, R2
49 BCS error6
50 MOVW R0, r1+28(FP) // r1
51 MOVW R1, r2+32(FP) // r2
52 MOVW R2, err+36(FP) // err
53 BL runtime·exitsyscall(SB)
54 RET
55 error6:
56 MOVW $-1, R3
57 MOVW R3, r1+28(FP) // r1
58 MOVW R2, r2+32(FP) // r2
59 MOVW R0, err+36(FP) // err
60 BL runtime·exitsyscall(SB)
61 RET
62
63 TEXT ·Syscall9(SB),NOSPLIT,$0-52
64 BL runtime·entersyscall(SB)
65 MOVW num+0(FP), R0 // sigcall num
66 MOVW a1+4(FP), R1 // a1
67 MOVW a2+8(FP), R2 // a2
68 MOVW a3+12(FP), R3 // a3
69 MOVW R13, R4
70 MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
71 SWI $0 // syscall
72 MOVW R4, R13
73 MOVW $0, R2
74 BCS error9
75 MOVW R0, r1+40(FP) // r1
76 MOVW R1, r2+44(FP) // r2
77 MOVW R2, err+48(FP) // err
78 BL runtime·exitsyscall(SB)
79 RET
80 error9:
81 MOVW $-1, R3
82 MOVW R3, r1+40(FP) // r1
83 MOVW R2, r2+44(FP) // r2
84 MOVW R0, err+48(FP) // err
85 BL runtime·exitsyscall(SB)
86 RET
87
88 TEXT ·RawSyscall(SB),NOSPLIT,$0-28
89 MOVW trap+0(FP), R0 // sigcall num
90 MOVW a1+4(FP), R1 // a1
91 MOVW a2+8(FP), R2 // a2
92 MOVW a3+12(FP), R3 // a3
93 SWI $0 // syscall
94 MOVW $0, R2
95 BCS errorr
96 MOVW R0, r1+16(FP) // r1
97 MOVW R1, r2+20(FP) // r2
98 MOVW R2, err+24(FP) // err
99 RET
100 errorr:
101 MOVW $-1, R3
102 MOVW R3, r1+16(FP) // r1
103 MOVW R2, r2+20(FP) // r2
104 MOVW R0, err+24(FP) // err
105 RET
106
107 TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
108 MOVW trap+0(FP), R0 // sigcall num
109 MOVW a1+4(FP), R1 // a1
110 MOVW a2+8(FP), R2 // a2
111 MOVW a3+12(FP), R3 // a3
112 MOVW R13, R4
113 MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
114 SWI $0 // syscall
115 MOVW R4, R13
116 MOVW $0, R2
117 BCS errorr6
118 MOVW R0, r1+28(FP) // r1
119 MOVW R1, r2+32(FP) // r2
120 MOVW R2, err+36(FP) // err
121 RET
122 errorr6:
123 MOVW $-1, R3
124 MOVW R3, r1+28(FP) // r1
125 MOVW R2, r2+32(FP) // r2
126 MOVW R0, err+36(FP) // err
127 RET
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