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https://git.proxmox.com/git/wasi-libc
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614d783e92
This adds a new crt1-command.c startup file, which uses [new-style command support]. Instead of calling `__wasm_call_ctors` and `__wasm_call_dtors` directly, this lets wasm-ld automatically call them. This preserves the existing crt1.c, so that the same wasi-libc build can support old-style and new-style commands, for compatibility during the transition. [new-style command support]: https://reviews.llvm.org/D81689 Co-authored-by: Dan Gohman <sunfish@mozilla.com>
19 lines
602 B
C
19 lines
602 B
C
#include <wasi/api.h>
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#include <stdlib.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 __wasm_call_dtors(void);
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__attribute__((export_name("_start")))
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void _start(void) {
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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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// If main exited successfully, just return, otherwise call `exit`.
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if (r != 0) {
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exit(r);
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}
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}
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