Add wasm-ld toolchain implementation
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Support for custom page sizes was added via the `--page-size=N` CLI flag in `wasm-ld`. Additionally, it defines a `__wasm_first_page_end` symbol, whose address is the end of the first page, a.k.a. the start of the second page, a.k.a. is the Wasm page size. This allows source files to be written in a page-size-agnostic manner, and for object files to be re-linked with different Wasm page sizes, without needing to recompile the source.
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Support for custom page sizes was added via the
--page-size=NCLI flag inwasm-ld.Additionally,
wasm-lddefines a__wasm_first_page_endsymbol, whose address is the end of the first page, a.k.a. the start of the second page, a.k.a. is the Wasm page size. This allows source files to be written in a page-size-agnostic manner, and for object files to be re-linked with different Wasm page sizes, without needing to recompile the source.