55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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#ifndef _SETJMP_H
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#define _SETJMP_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#ifndef __wasilibc_unmodified_upstream
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/* WASI has no setjmp */
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#if !defined(__wasm_exception_handling__)
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#error Setjmp/longjmp support requires Exception handling support, which is [not yet standardized](https://github.com/WebAssembly/proposals?tab=readme-ov-file#phase-3---implementation-phase-cg--wg). To enable it, compile with `-mllvm -wasm-enable-sjlj` and use an engine that implements the Exception handling proposal.
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#endif
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#endif
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#include <bits/setjmp.h>
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typedef struct __jmp_buf_tag {
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__jmp_buf __jb;
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unsigned long __fl;
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unsigned long __ss[128/sizeof(long)];
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} jmp_buf[1];
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
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#define __setjmp_attr __attribute__((__returns_twice__))
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#else
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#define __setjmp_attr
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#endif
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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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typedef jmp_buf sigjmp_buf;
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int sigsetjmp (sigjmp_buf, int) __setjmp_attr;
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_Noreturn void siglongjmp (sigjmp_buf, int);
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#endif
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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int _setjmp (jmp_buf) __setjmp_attr;
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_Noreturn void _longjmp (jmp_buf, int);
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#endif
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int setjmp (jmp_buf) __setjmp_attr;
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_Noreturn void longjmp (jmp_buf, int);
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#define setjmp setjmp
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#undef __setjmp_attr
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#ifdef __cplusplus
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}
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#endif
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#endif
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