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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /setjmp
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
2.5-18.1
Diffstat (limited to 'setjmp')
-rw-r--r--setjmp/__longjmp.c36
-rw-r--r--setjmp/bsd-_setjmp.c35
-rw-r--r--setjmp/bsd-setjmp.c34
-rw-r--r--setjmp/jmp-unwind.c29
-rw-r--r--setjmp/longjmp.c46
-rw-r--r--setjmp/setjmp.c37
-rw-r--r--setjmp/sigjmp.c35
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;
+}