diff options
Diffstat (limited to 'setjmp')
| -rw-r--r-- | setjmp/__longjmp.c | 36 | ||||
| -rw-r--r-- | setjmp/bsd-_setjmp.c | 35 | ||||
| -rw-r--r-- | setjmp/bsd-setjmp.c | 34 | ||||
| -rw-r--r-- | setjmp/jmp-unwind.c | 29 | ||||
| -rw-r--r-- | setjmp/longjmp.c | 46 | ||||
| -rw-r--r-- | setjmp/setjmp.c | 37 | ||||
| -rw-r--r-- | setjmp/sigjmp.c | 35 |
7 files changed, 252 insertions, 0 deletions
diff --git a/setjmp/__longjmp.c b/setjmp/__longjmp.c new file mode 100644 index 0000000000..8a61ff6770 --- /dev/null +++ b/setjmp/__longjmp.c @@ -0,0 +1,36 @@ +/* Copyright (C) 1991, 1994, 1995, 1996, 1997, 2000 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <setjmp.h> + + +/* Jump to the position specified by ENV, causing the + setjmp call there to return VAL, or 1 if VAL is 0. */ +void +__longjmp (__jmp_buf env, int val) +{ + if (val == 0) + val = 1; + + __set_errno (ENOSYS); + /* No way to signal failure. */ +} + +stub_warning (longjmp) +#include <stub-tag.h> diff --git a/setjmp/bsd-_setjmp.c b/setjmp/bsd-_setjmp.c new file mode 100644 index 0000000000..884a4da9b6 --- /dev/null +++ b/setjmp/bsd-_setjmp.c @@ -0,0 +1,35 @@ +/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. Stub version. + Copyright (C) 1994, 1997, 1999, 2000, 2002 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#include <setjmp.h> + +#undef _setjmp + +/* This implementation in C will not usually work, because the call + really needs to be a tail-call so __sigsetjmp saves the state of + the caller, not the state of this `setjmp' frame which then + immediate unwinds. */ + +int +_setjmp (jmp_buf env) +{ + return __sigsetjmp (env, 0); +} +libc_hidden_def (_setjmp) diff --git a/setjmp/bsd-setjmp.c b/setjmp/bsd-setjmp.c new file mode 100644 index 0000000000..15f3f153cc --- /dev/null +++ b/setjmp/bsd-setjmp.c @@ -0,0 +1,34 @@ +/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. Stub version. + Copyright (C) 1994, 1997, 1999 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#include <setjmp.h> + +#undef setjmp + +/* This implementation in C will not usually work, because the call + really needs to be a tail-call so __sigsetjmp saves the state of + the caller, not the state of this `setjmp' frame which then + immediate unwinds. */ + +int +setjmp (jmp_buf env) +{ + return __sigsetjmp (env, 1); +} diff --git a/setjmp/jmp-unwind.c b/setjmp/jmp-unwind.c new file mode 100644 index 0000000000..d2f76c62e7 --- /dev/null +++ b/setjmp/jmp-unwind.c @@ -0,0 +1,29 @@ +/* _longjmp_unwind -- Clean up stack frames unwound by longjmp. Stub version. + Copyright (C) 1995, 1997 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <setjmp.h> + +void +_longjmp_unwind (jmp_buf env, int val) +{ + + /* This function can perform any cleanups necessary to safely unwind the + stack frames around the current context which ENV unwinds past. */ + +} diff --git a/setjmp/longjmp.c b/setjmp/longjmp.c new file mode 100644 index 0000000000..9b1bda1caa --- /dev/null +++ b/setjmp/longjmp.c @@ -0,0 +1,46 @@ +/* Copyright (C) 1991,92,94,95,97,98,2000,2002 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stddef.h> +#include <setjmp.h> +#include <signal.h> + + +/* Set the signal mask to the one specified in ENV, and jump + to the position specified in ENV, causing the setjmp + call there to return VAL, or 1 if VAL is 0. */ +void +__libc_siglongjmp (sigjmp_buf env, int val) +{ + /* Perform any cleanups needed by the frames being unwound. */ + _longjmp_unwind (env, val); + + if (env[0].__mask_was_saved) + /* Restore the saved signal mask. */ + (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask, + (sigset_t *) NULL); + + /* Call the machine-dependent function to restore machine state. */ + __longjmp (env[0].__jmpbuf, val ?: 1); +} + +strong_alias (__libc_siglongjmp, __libc_longjmp) +libc_hidden_def (__libc_longjmp) +weak_alias (__libc_siglongjmp, _longjmp) +weak_alias (__libc_siglongjmp, longjmp) +weak_alias (__libc_siglongjmp, siglongjmp) diff --git a/setjmp/setjmp.c b/setjmp/setjmp.c new file mode 100644 index 0000000000..0676ff1396 --- /dev/null +++ b/setjmp/setjmp.c @@ -0,0 +1,37 @@ +/* Copyright (C) 1991, 94, 95, 96, 97, 98 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <setjmp.h> + + +/* Save the current program position in ENV and return 0. */ +int +__libc_sigsetjmp (jmp_buf env, int savemask) +{ + /* Save the signal mask if requested. */ + __sigjmp_save (env, savemask); + + __set_errno (ENOSYS); + /* No way to signal failure. */ + return 0; +} + +weak_alias (__libc_sigsetjmp, __sigsetjmp) +stub_warning (__sigsetjmp) +#include <stub-tag.h> diff --git a/setjmp/sigjmp.c b/setjmp/sigjmp.c new file mode 100644 index 0000000000..b23c547f5e --- /dev/null +++ b/setjmp/sigjmp.c @@ -0,0 +1,35 @@ +/* Copyright (C) 1992, 1994, 1997 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stddef.h> +#include <setjmp.h> +#include <signal.h> + +/* This function is called by the `sigsetjmp' macro + before doing a `__setjmp' on ENV[0].__jmpbuf. + Always return zero. */ + +int +__sigjmp_save (sigjmp_buf env, int savemask) +{ + env[0].__mask_was_saved = (savemask && + __sigprocmask (SIG_BLOCK, (sigset_t *) NULL, + &env[0].__saved_mask) == 0); + + return 0; +} |