tinygo/src/runtime/runtime_qemu.go
Ayke van Laethem c84c625585 runtime: update to avoid //go:volatile
There was exactly one change in the output of the smoke tests:
examples/test. However, it still runs just fine on a PCA10040.
2019-06-06 19:46:49 +02:00

45 строки
747 Б
Go

// +build qemu
package runtime
// This file implements the Stellaris LM3S6965 Cortex-M3 chip as implemented by
// QEMU.
import (
"device/arm"
"runtime/volatile"
"unsafe"
)
type timeUnit int64
const tickMicros = 1
var timestamp timeUnit
//go:export Reset_Handler
func main() {
preinit()
initAll()
callMain()
arm.SemihostingCall(arm.SemihostingReportException, arm.SemihostingApplicationExit)
abort()
}
const asyncScheduler = false
func sleepTicks(d timeUnit) {
// TODO: actually sleep here for the given time.
timestamp += d
}
func ticks() timeUnit {
return timestamp
}
// UART0 output register.
var stdoutWrite = (*volatile.Register8)(unsafe.Pointer(uintptr(0x4000c000)))
func putchar(c byte) {
stdoutWrite.Set(uint8(c))
}