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Diffstat (limited to 'sysdeps/s390/v1-setjmp.h')
| -rw-r--r-- | sysdeps/s390/v1-setjmp.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sysdeps/s390/v1-setjmp.h b/sysdeps/s390/v1-setjmp.h new file mode 100644 index 0000000000..a4a6b7640f --- /dev/null +++ b/sysdeps/s390/v1-setjmp.h @@ -0,0 +1,111 @@ +/* Copyright (C) 1991-2013 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* + * ISO C99 Standard: 7.13 Nonlocal jumps <setjmp.h> + */ + +#ifndef _V1_SETJMP_H +#define _V1_SETJMP_H 1 + +#include <features.h> + +__BEGIN_DECLS + +#define __V1_JMPBUF +#define _SETJMP_H +#include <bits/setjmp.h> /* Get `__jmp_buf'. */ + +#ifndef _ASM + +#include <bits/sigset.h> /* Get `__sigset_t'. */ + + +/* Calling environment, plus possibly a saved signal mask. */ +typedef struct __v1__jmp_buf_tag + { + /* NOTE: The machine-dependent definitions of `__sigsetjmp' + assume that a `jmp_buf' begins with a `__jmp_buf' and that + `__mask_was_saved' follows it. Do not move these members + or add others before it. */ + __jmp_buf __jmpbuf; /* Calling environment. */ + int __mask_was_saved; /* Saved the signal mask? */ + __sigset_t __saved_mask; /* Saved signal mask. */ + } __v1__jmp_buf[1]; + + +/* Store the calling environment in ENV, also saving the signal mask. + Return 0. */ +extern int __v1setjmp (__v1__jmp_buf __env); + +/* Store the calling environment in ENV, also saving the + signal mask if SAVEMASK is nonzero. Return 0. + This is the internal name for `sigsetjmp'. */ +extern int __v1__sigsetjmp (struct __v1__jmp_buf_tag __env[1], + int __savemask); + +/* Store the calling environment in ENV, not saving the signal mask. + Return 0. */ +extern int __v1_setjmp (struct __v1__jmp_buf_tag __env[1]); + +/* Jump to the environment saved in ENV, making the + `setjmp' call there return VAL, or 1 if VAL is 0. */ +extern void __v1longjmp (struct __v1__jmp_buf_tag __env[1], int __val) + __attribute__ ((__noreturn__)); + +/* Same. Usually `_longjmp' is used with `_setjmp', which does not save + the signal mask. But it is how ENV was saved that determines whether + `longjmp' restores the mask; `_longjmp' is just an alias. */ +extern void __v1_longjmp (struct __v1__jmp_buf_tag __env[1], int __val) + __attribute__ ((__noreturn__)); + +/* Use the same type for `jmp_buf' and `sigjmp_buf'. + The `__mask_was_saved' flag determines whether + or not `longjmp' will restore the signal mask. */ +typedef struct __v1__jmp_buf_tag __v1__sigjmp_buf[1]; + +/* Jump to the environment saved in ENV, making the + sigsetjmp call there return VAL, or 1 if VAL is 0. + Restore the signal mask if that sigsetjmp call saved it. + This is just an alias `longjmp'. */ +extern void __v1siglongjmp (__v1__sigjmp_buf __env, int __val) + __attribute__ ((__noreturn__)); + +/* Internal machine-dependent function to restore context sans signal mask. */ +extern void __v1__longjmp (__jmp_buf __env, int __val) + __attribute__ ((__noreturn__)); + +/* Internal function to possibly save the current mask of blocked signals + in ENV, and always set the flag saying whether or not it was saved. + This is used by the machine-dependent definition of `__sigsetjmp'. + Always returns zero, for convenience. */ +extern int __v1__sigjmp_save (__v1__jmp_buf __env, int __savemask); + +extern void _longjmp_unwind (__v1__jmp_buf env, int val); + +extern void __v1__libc_siglongjmp (__v1__sigjmp_buf env, int val) + __attribute__ ((noreturn)); + +extern void __v1__libc_longjmp (__v1__sigjmp_buf env, int val) + __attribute__ ((noreturn)); + +libc_hidden_proto (__v1__libc_longjmp) +libc_hidden_proto (__v1_setjmp) +libc_hidden_proto (__v1__sigsetjmp) +#endif /* !_ASM */ + +#endif /* ifndef _V1_SETJMP_H */ |