1 // Copyright 2012 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.
9 // System call support for ARM, FreeBSD
12 // func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, errno uintptr);
13 // func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr);
14 // func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, errno uintptr)
16 TEXT ·Syscall(SB),NOSPLIT,$0-28
17 BL runtime·entersyscall(SB)
18 MOVW trap+0(FP), R7 // syscall number
19 MOVW a1+4(FP), R0 // a1
20 MOVW a2+8(FP), R1 // a2
21 MOVW a3+12(FP), R2 // a3
25 MOVW R0, r1+16(FP) // r1
26 MOVW R1, r2+20(FP) // r2
27 MOVW R2, err+24(FP) // errno
28 BL runtime·exitsyscall(SB)
32 MOVW R3, r1+16(FP) // r1
33 MOVW R2, r2+20(FP) // r2
34 MOVW R0, err+24(FP) // errno
35 BL runtime·exitsyscall(SB)
38 TEXT ·Syscall6(SB),NOSPLIT,$0-40
39 BL runtime·entersyscall(SB)
40 MOVW trap+0(FP), R7 // syscall number
41 MOVW a1+4(FP), R0 // a1
42 MOVW a2+8(FP), R1 // a2
43 MOVW a3+12(FP), R2 // a3
44 MOVW a4+16(FP), R3 // a4
46 MOVW $a5+20(FP), R13 // a5 to a6 are passed on stack
51 MOVW R0, r1+28(FP) // r1
52 MOVW R1, r2+32(FP) // r2
53 MOVW R2, err+36(FP) // errno
54 BL runtime·exitsyscall(SB)
58 MOVW R3, r1+28(FP) // r1
59 MOVW R2, r2+32(FP) // r2
60 MOVW R0, err+36(FP) // errno
61 BL runtime·exitsyscall(SB)
64 TEXT ·Syscall9(SB),NOSPLIT,$0-52
65 BL runtime·entersyscall(SB)
66 MOVW num+0(FP), R7 // syscall number
67 MOVW a1+4(FP), R0 // a1
68 MOVW a2+8(FP), R1 // a2
69 MOVW a3+12(FP), R2 // a3
70 MOVW a4+16(FP), R3 // a4
72 MOVW $a5+20(FP), R13 // a5 to a9 are passed on stack
77 MOVW R0, r1+40(FP) // r1
78 MOVW R1, r2+44(FP) // r2
79 MOVW R2, err+48(FP) // errno
80 BL runtime·exitsyscall(SB)
84 MOVW R3, r1+40(FP) // r1
85 MOVW R2, r2+44(FP) // r2
86 MOVW R0, err+48(FP) // errno
87 BL runtime·exitsyscall(SB)
90 TEXT ·RawSyscall(SB),NOSPLIT,$0-28
91 MOVW trap+0(FP), R7 // syscall number
92 MOVW a1+4(FP), R0 // a1
93 MOVW a2+8(FP), R1 // a2
94 MOVW a3+12(FP), R2 // a3
98 MOVW R0, r1+16(FP) // r1
99 MOVW R1, r2+20(FP) // r2
100 MOVW R2, err+24(FP) // errno
104 MOVW R3, r1+16(FP) // r1
105 MOVW R2, r2+20(FP) // r2
106 MOVW R0, err+24(FP) // errno
109 TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
110 MOVW trap+0(FP), R7 // syscall number
111 MOVW a1+4(FP), R0 // a1
112 MOVW a2+8(FP), R1 // a2
113 MOVW a3+12(FP), R2 // a3
114 MOVW a4+16(FP), R3 // a4
116 MOVW $a5+20(FP), R13 // a5 to a6 are passed on stack
121 MOVW R0, r1+28(FP) // r1
122 MOVW R1, r2+32(FP) // r2
123 MOVW R2, err+36(FP) // errno
127 MOVW R3, r1+28(FP) // r1
128 MOVW R2, r2+32(FP) // r2
129 MOVW R0, err+36(FP) // errno