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44 lines
989 B
C
44 lines
989 B
C
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/*
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* setjmp.h
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*/
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#ifndef _SETJMP_H
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#define _SETJMP_H
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#include <klibc/extern.h>
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#include <klibc/compiler.h>
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#include <stddef.h>
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#include <signal.h>
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#include <klibc/archsetjmp.h>
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__extern int setjmp(jmp_buf);
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__extern __noreturn longjmp(jmp_buf, int);
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/*
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Whose bright idea was it to add unrelated functionality to just about
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the only function in the standard C library (setjmp) which cannot be
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wrapped by an ordinary function wrapper? Anyway, the damage is done,
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and therefore, this wrapper *must* be inline. However, gcc will
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complain if this is an inline function for unknown reason, and
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therefore sigsetjmp() needs to be a macro.
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*/
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struct __sigjmp_buf {
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jmp_buf __jmpbuf;
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sigset_t __sigs;
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};
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typedef struct __sigjmp_buf sigjmp_buf[1];
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#define sigsetjmp(__env, __save) \
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({ \
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struct __sigjmp_buf *__e = (__env); \
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sigprocmask(0, NULL, &__e->__sigs); \
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setjmp(__e->__jmpbuf); \
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})
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__extern __noreturn siglongjmp(sigjmp_buf, int);
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#endif /* _SETJMP_H */
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