24 lines
760 B
C
24 lines
760 B
C
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#ifndef __wasilibc___macro_PAGESIZE_h
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#define __wasilibc___macro_PAGESIZE_h
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/*
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* Without custom-page-sizes proposal, the page size in WebAssembly
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* is fixed at 64 KiB.
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*
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* The LLVM versions with a support of custom-page-sizes proposal
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* provides __wasm_first_page_end global to allow page-size-agnostic
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* objects.
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*
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* If this ever needs to be a value outside the range of an `int`, the
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* `getpagesize` function which returns this value will need special
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* consideration. POSIX has deprecated `getpagesize` in favor of
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* `sysconf(_SC_PAGESIZE)` which does not have this problem.
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*/
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#if __clang_major__ >= 22
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extern char __wasm_first_page_end;
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#define PAGESIZE ((unsigned long)&__wasm_first_page_end)
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#else
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#define PAGESIZE (0x10000)
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#endif
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#endif
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