mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-04 19:17:47 +00:00
Ayke van Laethem
31 lines
649 B
Go
31 lines
649 B
Go
// +build !linux
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package runtime
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import (
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"unsafe"
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)
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var (
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_extern__heap_start unsafe.Pointer // defined by the linker
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heapptr = uintptr(unsafe.Pointer(&_extern__heap_start))
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)
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func alloc(size uintptr) unsafe.Pointer {
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// TODO: this can be optimized by not casting between pointers and ints so
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// much. And by using platform-native data types (e.g. *uint8 for 8-bit
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// systems).
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size = align(size)
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addr := heapptr
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heapptr += size
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for i := uintptr(0); i < uintptr(size); i += 4 {
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ptr := (*uint32)(unsafe.Pointer(addr + i))
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*ptr = 0
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}
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return unsafe.Pointer(addr)
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}
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func free(ptr unsafe.Pointer) {
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// TODO: use a GC
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}
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