blob: cf2ff68183d2dd21b8129c560a4187e843956e96 (
plain)
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
|
// +build arm7tdmi
package runtime
import (
_ "runtime/interrupt" // make sure the interrupt handler is defined
"unsafe"
)
type timeUnit int64
const tickMicros = 1
func putchar(c byte) {
// dummy, TODO
}
//go:extern _sbss
var _sbss [0]byte
//go:extern _ebss
var _ebss [0]byte
//go:extern _sdata
var _sdata [0]byte
//go:extern _sidata
var _sidata [0]byte
//go:extern _edata
var _edata [0]byte
// Entry point for Go. Initialize all packages and call main.main().
//go:export main
func main() {
// Initialize .data and .bss sections.
preinit()
// Run initializers of all packages.
initAll()
// Compiler-generated call to main.main().
go callMain()
// Run the scheduler.
scheduler()
}
func preinit() {
// Initialize .bss: zero-initialized global variables.
ptr := unsafe.Pointer(&_sbss)
for ptr != unsafe.Pointer(&_ebss) {
*(*uint32)(ptr) = 0
ptr = unsafe.Pointer(uintptr(ptr) + 4)
}
// Initialize .data: global variables initialized from flash.
src := unsafe.Pointer(&_sidata)
dst := unsafe.Pointer(&_sdata)
for dst != unsafe.Pointer(&_edata) {
*(*uint32)(dst) = *(*uint32)(src)
dst = unsafe.Pointer(uintptr(dst) + 4)
src = unsafe.Pointer(uintptr(src) + 4)
}
}
func ticks() timeUnit {
// TODO
return 0
}
const asyncScheduler = false
func sleepTicks(d timeUnit) {
// TODO
}
func abort() {
// TODO
for {
}
}
// Implement memset for LLVM and compiler-rt.
//go:export memset
func libc_memset(ptr unsafe.Pointer, c byte, size uintptr) {
for i := uintptr(0); i < size; i++ {
*(*byte)(unsafe.Pointer(uintptr(ptr) + i)) = c
}
}
// Implement memmove for LLVM and compiler-rt.
//go:export memmove
func libc_memmove(dst, src unsafe.Pointer, size uintptr) {
memmove(dst, src, size)
}
|
