wasm

binlib/wasi-sysroot-28.0/include/wasm32-wasip2/__macro_PAGESIZE.h

@@ -0,0 +1,24 @@
+#ifndef __wasilibc___macro_PAGESIZE_h
+#define __wasilibc___macro_PAGESIZE_h
+
+/*
+ * Without custom-page-sizes proposal, the page size in WebAssembly
+ * is fixed at 64 KiB.
+ *
+ * The LLVM versions with a support of custom-page-sizes proposal
+ * provides __wasm_first_page_end global to allow page-size-agnostic
+ * objects.
+ *
+ * If this ever needs to be a value outside the range of an `int`, the
+ * `getpagesize` function which returns this value will need special
+ * consideration. POSIX has deprecated `getpagesize` in favor of
+ * `sysconf(_SC_PAGESIZE)` which does not have this problem.
+ */
+#if __clang_major__ >= 22
+extern char __wasm_first_page_end;
+#define PAGESIZE ((unsigned long)&__wasm_first_page_end)
+#else
+#define PAGESIZE (0x10000)
+#endif
+
+#endif