mirror of
https://github.com/tinygo-org/tinygo.git
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Ayke van Laethem
46 lines
737 B
Go
46 lines
737 B
Go
// +build qemu
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package runtime
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// This file implements the Stellaris LM3S6965 Cortex-M3 chip as implemented by
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// QEMU.
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import (
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"device/arm"
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"unsafe"
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)
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type timeUnit int64
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const tickMicros = 1
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var timestamp timeUnit
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//go:export Reset_Handler
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func main() {
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preinit()
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initAll()
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mainWrapper()
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arm.SemihostingCall(arm.SemihostingReportException, arm.SemihostingApplicationExit)
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abort()
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}
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func sleepTicks(d timeUnit) {
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// TODO: actually sleep here for the given time.
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timestamp += d
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}
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func ticks() timeUnit {
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return timestamp
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}
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//go:volatile
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type regValue uint32
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// UART0 output register.
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var stdoutWrite *regValue = (*regValue)(unsafe.Pointer(uintptr(0x4000c000)))
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func putchar(c byte) {
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*stdoutWrite = regValue(c)
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}
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