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https://git.proxmox.com/git/wasi-libc
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d9066a87c0
This adds support for the `__main_argc_argv` change, while preserving compatibility with `__original_main`. This is needed by the LTO build because the `__original_main` hack works in LLVM codegen, which is after LTO. The `__main_argc_argv` change is implemented in clang, which makes it properly visible to LTO.
24 lines
748 B
C
24 lines
748 B
C
#include <wasi/api.h>
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extern void __wasm_call_ctors(void);
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extern int __original_main(void);
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extern void __prepare_for_exit(void);
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void _start(void) {
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// The linker synthesizes this to call constructors.
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__wasm_call_ctors();
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// Call `__original_main` which will either be the application's zero-argument
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// `__original_main` function or a libc routine which calls `__main_void`.
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// TODO: Call `main` directly once we no longer have to support old compilers.
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int r = __original_main();
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// Call atexit functions, destructors, stdio cleanup, etc.
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__prepare_for_exit();
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// If main exited successfully, just return, otherwise call
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// `__wasi_proc_exit`.
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if (r != 0) {
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__wasi_proc_exit(r);
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}
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}
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