tinygo/src/runtime/runtime_fe310_qemu.go
Ayke van Laethem 77ec9b6369 all: update build constraints to Go 1.17
Do it all at once in preparation for Go 1.18 support.

To make this commit, I've simply modified the `fmt-check` Makefile
target to rewrite files instead of listing the differences. So this is a
fully mechanical change, it should not have introduced any errors.
2022-02-04 07:49:46 +01:00

37 строки
861 Б
Go

//go:build fe310 && qemu
// +build fe310,qemu
package runtime
import (
"runtime/volatile"
"unsafe"
)
// Special memory-mapped device to exit tests, created by SiFive.
var testExit = (*volatile.Register32)(unsafe.Pointer(uintptr(0x100000)))
// ticksToNanoseconds converts CLINT ticks (at 100ns per tick) to nanoseconds.
func ticksToNanoseconds(ticks timeUnit) int64 {
return int64(ticks) * 100
}
// nanosecondsToTicks converts nanoseconds to CLINT ticks (at 100ns per tick).
func nanosecondsToTicks(ns int64) timeUnit {
return timeUnit(ns / 100)
}
func abort() {
exit(1)
}
func exit(code int) {
if code == 0 {
// Signal a successful exit.
testExit.Set(0x5555) // FINISHER_PASS
} else {
// Signal a failure. The exit code is stored in the upper 16 bits of the
// 32 bit value.
testExit.Set(uint32(code)<<16 | 0x3333) // FINISHER_FAIL
}
}