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Ayke van Laethem
4643401a1d
Instead of markGlobals calling markRoots unconditionally (which doesn't
make sense for -gc=none and -gc=leaking), provide markRoots as a
callback function.
This is in preparation for -gc=boehm, where the previous design is even
more awkward and a callback makes far more sense.
I've tested the size impact using `make smoketest XTENSA=0`. There is
none, except for two cases:
* One with `-opt=0` so const-propagation for the callback didn't take
place.
* One other on AVR, I don't know why but as it's only 16 bytes in a
very specific case I'm going to assume it's just a random change in
compiler output that caused a size difference.
16 lines
582 B
Go
16 lines
582 B
Go
//go:build (gc.conservative || gc.precise) && (baremetal || tinygo.wasm)
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package runtime
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// This file implements findGlobals for all systems where the start and end of
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// the globals section can be found through linker-defined symbols.
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// findGlobals finds all globals (which are reachable by definition) and calls
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// the callback for them.
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//
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// This implementation marks all globals conservatively and assumes it can use
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// linker-defined symbols for the start and end of the .data section.
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func findGlobals(found func(start, end uintptr)) {
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found(globalsStart, globalsEnd)
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}
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