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da9c530d99
* Update wasi-libc to a00bf321eeeca836ee2a0d2d25aeb8524107b8cc It includes a port of emscripten's allocator that performs performs much better than the old one. Most importantly, it includes the prerequisites to later add support for POSIX threads.
31 lines
1.2 KiB
C
Vendored
31 lines
1.2 KiB
C
Vendored
#include <unistd.h>
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#include <stdlib.h>
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#include <sysexits.h>
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#include <wasi/api.h>
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#include <wasi/libc.h>
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#include <wasi/libc-environ.h>
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// If the program does use `environ`, it'll get this version of
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// `__wasilibc_environ`, which is initialized with a constructor function, so
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// that it's initialized whenever user code might want to access it.
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char **__wasilibc_environ;
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weak_alias(__wasilibc_environ, _environ);
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weak_alias(__wasilibc_environ, environ);
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// We define this function here in the same source file as
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// `__wasilibc_environ`, so that this function is called in iff environment
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// variable support is used.
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// Concerning the 50 -- levels up to 100 are reserved for the implementation,
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// so we an arbitrary number in the middle of the range to allow other
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// reserved things to go before or after.
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__attribute__((constructor(50)))
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static void __wasilibc_initialize_environ_eagerly(void) {
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__wasilibc_initialize_environ();
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}
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// See the comments in libc-environ.h.
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void __wasilibc_maybe_reinitialize_environ_eagerly(void) {
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// This translation unit is linked in if `environ` is used, meaning we need
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// to eagerly reinitialize the environment variables.
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__wasilibc_initialize_environ();
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}
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