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go / go / 755b36aa532f6b23081bf5eaf83449c1a6dd8114 / . / src / syscall / asm_openbsd_arm.s
blob: 9279ed960f361e072d92589e18efd81c10a4575a [file] [log] [blame]
Joel Sing550149f2015-02-16 02:28:39 +1100[diff] [blame]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, OpenBSD
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// func RawSyscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32);
16// func RawSyscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32);
17
18TEXT ·Syscall(SB),NOSPLIT,$0-28
19 BL runtime·entersyscall(SB)
Josh Bleecher Snyder71ab9fa2016-07-11 16:05:57 -0700[diff] [blame]20 MOVW trap+0(FP), R12 // syscall number
Joel Sing550149f2015-02-16 02:28:39 +1100[diff] [blame]21 MOVW a1+4(FP), R0 // arg 1
22 MOVW a2+8(FP), R1 // arg 2
23 MOVW a3+12(FP), R2 // arg 3
24 SWI $0
25 MOVW $0, R2
26 BCS error
27 MOVW R0, r1+16(FP) // ret 1
28 MOVW R1, r2+20(FP) // ret 2
29 MOVW R2, err+24(FP) // err
30 BL runtime·exitsyscall(SB)
31 RET
32error:
33 MOVW $-1, R3
34 MOVW R3, r1+16(FP) // ret 1
35 MOVW R2, r2+20(FP) // ret 2
36 MOVW R0, err+24(FP) // err
37 BL runtime·exitsyscall(SB)
38 RET
39
40TEXT ·Syscall6(SB),NOSPLIT,$0-40
41 BL runtime·entersyscall(SB)
Josh Bleecher Snyder71ab9fa2016-07-11 16:05:57 -0700[diff] [blame]42 MOVW trap+0(FP), R12 // syscall number
Joel Sing550149f2015-02-16 02:28:39 +1100[diff] [blame]43 MOVW a1+4(FP), R0 // arg 1
44 MOVW a2+8(FP), R1 // arg 2
45 MOVW a3+12(FP), R2 // arg 3
46 MOVW a4+16(FP), R3 // arg 4
47 MOVW R13, R4
48 MOVW $a5+20(FP), R13 // arg 5 to arg 6 are passed on stack
49 SWI $0
50 MOVW R4, R13
51 MOVW $0, R2
52 BCS error6
53 MOVW R0, r1+28(FP) // ret 1
54 MOVW R1, r2+32(FP) // ret 2
55 MOVW R2, err+36(FP) // err
56 BL runtime·exitsyscall(SB)
57 RET
58error6:
59 MOVW $-1, R3
60 MOVW R3, r1+28(FP) // ret 1
61 MOVW R2, r2+32(FP) // ret 2
62 MOVW R0, err+36(FP) // err
63 BL runtime·exitsyscall(SB)
64 RET
65
66TEXT ·Syscall9(SB),NOSPLIT,$0-52
67 BL runtime·entersyscall(SB)
Josh Bleecher Snyder71ab9fa2016-07-11 16:05:57 -0700[diff] [blame]68 MOVW num+0(FP), R12 // syscall number
Joel Sing550149f2015-02-16 02:28:39 +1100[diff] [blame]69 MOVW a1+4(FP), R0 // arg 1
70 MOVW a2+8(FP), R1 // arg 2
71 MOVW a3+12(FP), R2 // arg 3
72 MOVW a4+16(FP), R3 // arg 4
73 MOVW R13, R4
74 MOVW $a5+20(FP), R13 // arg 5 to arg 9 are passed on stack
75 SWI $0
76 MOVW R4, R13
77 MOVW $0, R2
78 BCS error9
79 MOVW R0, r1+40(FP) // ret 1
80 MOVW R1, r2+44(FP) // ret 2
81 MOVW R2, err+48(FP) // err
82 BL runtime·exitsyscall(SB)
83 RET
84error9:
85 MOVW $-1, R3
86 MOVW R3, r1+40(FP) // ret 1
87 MOVW R2, r2+44(FP) // ret 2
88 MOVW R0, err+48(FP) // err
89 BL runtime·exitsyscall(SB)
90 RET
91
92TEXT ·RawSyscall(SB),NOSPLIT,$0-28
Josh Bleecher Snyder71ab9fa2016-07-11 16:05:57 -0700[diff] [blame]93 MOVW trap+0(FP), R12 // syscall number
Joel Sing550149f2015-02-16 02:28:39 +1100[diff] [blame]94 MOVW a1+4(FP), R0 // arg 1
95 MOVW a2+8(FP), R1 // arg 2
96 MOVW a3+12(FP), R2 // arg 3
97 SWI $0
98 MOVW $0, R2
99 BCS errorr
100 MOVW R0, r1+16(FP) // ret 1
101 MOVW R1, r2+20(FP) // ret 2
102 MOVW R2, err+24(FP) // err
103 RET
104errorr:
105 MOVW $-1, R3
106 MOVW R3, r1+16(FP) // ret 1
107 MOVW R2, r2+20(FP) // ret 2
108 MOVW R0, err+24(FP) // err
109 RET
110
111TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
Josh Bleecher Snyder71ab9fa2016-07-11 16:05:57 -0700[diff] [blame]112 MOVW trap+0(FP), R12 // syscall number
Joel Sing550149f2015-02-16 02:28:39 +1100[diff] [blame]113 MOVW a1+4(FP), R0 // arg 1
114 MOVW a2+8(FP), R1 // arg 2
115 MOVW a3+12(FP), R2 // arg 3
116 MOVW a4+16(FP), R3 // arg 4
117 MOVW R13, R4
118 MOVW $a5+20(FP), R13 // arg 5 to arg 6 are passed on stack
119 SWI $0
120 MOVW R4, R13
121 MOVW $0, R2
122 BCS errorr6
123 MOVW R0, r1+28(FP) // ret 1
124 MOVW R1, r2+32(FP) // ret 2
125 MOVW R2, err+36(FP) // err
126 RET
127errorr6:
128 MOVW $-1, R3
129 MOVW R3, r1+28(FP) // ret 1
130 MOVW R2, r2+32(FP) // ret 2
131 MOVW R0, err+36(FP) // err
132 RET