1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
| // Copyright 2015 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"
|
| TEXT _rt0_arm64_linux(SB),NOSPLIT|NOFRAME,$0
| MOVD 0(RSP), R0 // argc
| ADD $8, RSP, R1 // argv
| BL main(SB)
|
| // When building with -buildmode=c-shared, this symbol is called when the shared
| // library is loaded.
| TEXT _rt0_arm64_linux_lib(SB),NOSPLIT,$184
| // Preserve callee-save registers.
| MOVD R19, 24(RSP)
| MOVD R20, 32(RSP)
| MOVD R21, 40(RSP)
| MOVD R22, 48(RSP)
| MOVD R23, 56(RSP)
| MOVD R24, 64(RSP)
| MOVD R25, 72(RSP)
| MOVD R26, 80(RSP)
| MOVD R27, 88(RSP)
| FMOVD F8, 96(RSP)
| FMOVD F9, 104(RSP)
| FMOVD F10, 112(RSP)
| FMOVD F11, 120(RSP)
| FMOVD F12, 128(RSP)
| FMOVD F13, 136(RSP)
| FMOVD F14, 144(RSP)
| FMOVD F15, 152(RSP)
| MOVD g, 160(RSP)
|
| // Initialize g as null in case of using g later e.g. sigaction in cgo_sigaction.go
| MOVD ZR, g
|
| MOVD R0, _rt0_arm64_linux_lib_argc<>(SB)
| MOVD R1, _rt0_arm64_linux_lib_argv<>(SB)
|
| // Synchronous initialization.
| MOVD $runtime·libpreinit(SB), R4
| BL (R4)
|
| // Create a new thread to do the runtime initialization and return.
| MOVD _cgo_sys_thread_create(SB), R4
| CMP $0, R4
| BEQ nocgo
| MOVD $_rt0_arm64_linux_lib_go(SB), R0
| MOVD $0, R1
| SUB $16, RSP // reserve 16 bytes for sp-8 where fp may be saved.
| BL (R4)
| ADD $16, RSP
| B restore
|
| nocgo:
| MOVD $0x800000, R0 // stacksize = 8192KB
| MOVD $_rt0_arm64_linux_lib_go(SB), R1
| MOVD R0, 8(RSP)
| MOVD R1, 16(RSP)
| MOVD $runtime·newosproc0(SB),R4
| BL (R4)
|
| restore:
| // Restore callee-save registers.
| MOVD 24(RSP), R19
| MOVD 32(RSP), R20
| MOVD 40(RSP), R21
| MOVD 48(RSP), R22
| MOVD 56(RSP), R23
| MOVD 64(RSP), R24
| MOVD 72(RSP), R25
| MOVD 80(RSP), R26
| MOVD 88(RSP), R27
| FMOVD 96(RSP), F8
| FMOVD 104(RSP), F9
| FMOVD 112(RSP), F10
| FMOVD 120(RSP), F11
| FMOVD 128(RSP), F12
| FMOVD 136(RSP), F13
| FMOVD 144(RSP), F14
| FMOVD 152(RSP), F15
| MOVD 160(RSP), g
| RET
|
| TEXT _rt0_arm64_linux_lib_go(SB),NOSPLIT,$0
| MOVD _rt0_arm64_linux_lib_argc<>(SB), R0
| MOVD _rt0_arm64_linux_lib_argv<>(SB), R1
| MOVD $runtime·rt0_go(SB),R4
| B (R4)
|
| DATA _rt0_arm64_linux_lib_argc<>(SB)/8, $0
| GLOBL _rt0_arm64_linux_lib_argc<>(SB),NOPTR, $8
| DATA _rt0_arm64_linux_lib_argv<>(SB)/8, $0
| GLOBL _rt0_arm64_linux_lib_argv<>(SB),NOPTR, $8
|
|
| TEXT main(SB),NOSPLIT|NOFRAME,$0
| MOVD $runtime·rt0_go(SB), R2
| BL (R2)
| exit:
| MOVD $0, R0
| MOVD $94, R8 // sys_exit
| SVC
| B exit
|
|
