4ec1e58aa6
We have an optimization for this specific pattern, but it's really just a hack. With the addition of unsafe.Add in Go 1.17 we can directly specify the intent instead and eventually remove this special case. The code is also easier to read.
95 строки
1,4 КиБ
Go
95 строки
1,4 КиБ
Go
//go:build arm7tdmi
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package runtime
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import (
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_ "runtime/interrupt" // make sure the interrupt handler is defined
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"unsafe"
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)
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type timeUnit int64
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func putchar(c byte) {
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// dummy, TODO
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}
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func getchar() byte {
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// dummy, TODO
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return 0
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}
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func buffered() int {
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// dummy, TODO
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return 0
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}
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//go:extern _sbss
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var _sbss [0]byte
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//go:extern _ebss
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var _ebss [0]byte
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//go:extern _sdata
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var _sdata [0]byte
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//go:extern _sidata
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var _sidata [0]byte
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//go:extern _edata
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var _edata [0]byte
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// Entry point for Go. Initialize all packages and call main.main().
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//
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//export main
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func main() {
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// Initialize .data and .bss sections.
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preinit()
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// Run program.
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run()
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}
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func preinit() {
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// Initialize .bss: zero-initialized global variables.
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ptr := unsafe.Pointer(&_sbss)
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for ptr != unsafe.Pointer(&_ebss) {
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*(*uint32)(ptr) = 0
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ptr = unsafe.Add(ptr, 4)
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}
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// Initialize .data: global variables initialized from flash.
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src := unsafe.Pointer(&_sidata)
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dst := unsafe.Pointer(&_sdata)
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for dst != unsafe.Pointer(&_edata) {
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*(*uint32)(dst) = *(*uint32)(src)
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dst = unsafe.Add(dst, 4)
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src = unsafe.Add(src, 4)
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}
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}
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func ticksToNanoseconds(ticks timeUnit) int64 {
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return int64(ticks)
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}
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func nanosecondsToTicks(ns int64) timeUnit {
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return timeUnit(ns)
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}
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func ticks() timeUnit {
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// TODO
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return 0
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}
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func sleepTicks(d timeUnit) {
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// TODO
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}
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func exit(code int) {
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abort()
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}
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func abort() {
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// TODO
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for {
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}
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}
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