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Ayke van Laethem
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.
39 lines
709 B
Go
39 lines
709 B
Go
//go:build tinygo.riscv32
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package runtime
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import "unsafe"
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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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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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