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Update.
1998-06-18 21:45 Ulrich Drepper <drepper@cygnus.com> * signal/signal.h: Add prototype for __sigaltstack. * sysdeps/unix/sysv/linux/syscalls.list: Add __sigaltstack name. Remove sigstack entry. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Add sigstack here. * sysdeps/unix/sysv/linux/sigstack.c: New file. * sysdeps/i386/backtrace.c: Add casts.
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ChangeLog
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ChangeLog
@ -1,3 +1,13 @@
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1998-06-18 21:45 Ulrich Drepper <drepper@cygnus.com>
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* signal/signal.h: Add prototype for __sigaltstack.
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* sysdeps/unix/sysv/linux/syscalls.list: Add __sigaltstack name.
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Remove sigstack entry.
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* sysdeps/unix/sysv/linux/alpha/syscalls.list: Add sigstack here.
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* sysdeps/unix/sysv/linux/sigstack.c: New file.
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* sysdeps/i386/backtrace.c: Add casts.
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1998-06-18 19:49 Ulrich Drepper <drepper@cygnus.com>
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* intl/dcgettext.c: use complete type name.
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@ -328,6 +328,8 @@ extern int sigstack __P ((__const struct sigstack *__ss,
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/* Alternate signal handler stack interface.
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This interface should always be preferred over `sigstack'. */
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extern int __sigaltstack __P ((__const struct sigaltstack *__ss,
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struct sigaltstack *__oss));
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extern int sigaltstack __P ((__const struct sigaltstack *__ss,
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struct sigaltstack *__oss));
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@ -55,7 +55,7 @@ __backtrace (array, size)
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current = (struct layout *) ebp;
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while (cnt < size)
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{
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if (current < esp || current > __libc_stack_end)
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if ((void *) current < esp || (void *) current > __libc_stack_end)
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/* This means the address is out of range. Note that for the
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toplevel we see a frame pointer with value NULL which clearly is
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out of range. */
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@ -16,6 +16,7 @@ semget - semget 3 __semget semget
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semctl - semctl 4 __semctl semctl
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osf_sigprocmask - osf_sigprocmask 2 __osf_sigprocmask
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sigstack - sigstack 2 sigstack
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getpeername - getpeername 3 __getpeername getpeername
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getpriority - getpriority 2 __getpriority getpriority
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61
sysdeps/unix/sysv/linux/sigstack.c
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61
sysdeps/unix/sysv/linux/sigstack.c
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@ -0,0 +1,61 @@
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/* Emulate sigstack function using sigalstack.
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <signal.h>
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int
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sigstack (ss, oss)
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const struct sigstack *ss;
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struct sigstack *oss;
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{
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stack_t sas;
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stack_t *sasp = NULL;
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stack_t osas;
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stack_t *osasp = oss == NULL ? NULL : &osas;
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int result;
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if (ss != NULL)
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{
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/* We have to convert the information. */
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sas.ss_sp = ss->ss_sp;
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sas.ss_flags = ss->ss_onstack ? SS_ONSTACK : 0;
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/* For the size of the stack we have no value we can pass to the
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kernel. This is why this function should not be used. We simply
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assume that all the memory down to address zero (in case the stack
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grows down) is available. */
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sas.ss_size = ss->ss_sp - NULL;
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sasp = &sas;
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}
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/* Call the kernel. */
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result = __sigaltstack (sasp, osasp);
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/* Convert the result, if wanted and possible. */
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if (result == 0 && oss != NULL)
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{
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oss->ss_sp = osas.ss_sp;
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oss->ss_onstack = (osas.ss_flags & SS_ONSTACK) != 0;
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}
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return result;
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}
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@ -72,8 +72,7 @@ setfsuid EXTRA setfsuid 1 setfsuid
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setpgid - setpgid 2 __setpgid setpgid
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setresgid EXTRA setresgid 3 setresgid
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setresuid EXTRA setresuid 3 setresuid
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sigaltstack - sigaltstack 2 sigaltstack
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sigstack - sigstack 2 sigstack
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sigaltstack - sigaltstack 2 __sigaltstack sigaltstack
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sys_fstat fxstat fstat 2 __syscall_fstat
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sys_lstat lxstat lstat 2 __syscall_lstat
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sys_mknod xmknod mknod 3 __syscall_mknod
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