MIPS 32-bit target without Atomic{I,U}64

[Borber]

https://github.com/Borber/seam/actions/runs/4154490037/jobs/7186917428#step:5:227

How should I fix this problem

[MisterEggnog]

I looked into a bit, seems that the issue has to do with the fact that 64bit atomics are not available on mips platforms with 32bit pointers.

Unfortunately this seems to be an issue with rust-gc ¹ so you may want to publish an issue there, however, while the repository is in continuous development they have not released an update in two years.

It should not be too difficult to fix, looking at the code they just need to add a few cfg guards for the 64bit atomics.

Footnotes

1. That is if boa does not use 64bit atomics, I do not know if that is the case. ↩

[jedel1043]

We actually do use 64 bit atomics for our JsSymbol implementation.

boa/boa_engine/src/symbol.rs

Lines 49 to 52 in ffa854c

	// Symbol hash.
	//
	// For now this is an incremented u64 number.
	static SYMBOL_HASH_COUNT: AtomicU64 = AtomicU64::new(RESERVED_SYMBOL_HASHES + 1);

We'll probably have to change that to an AtomicUSize, which should be available on more platforms.

Also, we've already pulled rust-gc into boa_gc because we needed to add support for weak pointers, so any issue related to the GC must be filed on this project.

[MisterEggnog]

I was not aware of that, my apologies.