diff options
| -rw-r--r-- | ChangeLog | 10 | ||||
| -rw-r--r-- | signal/signal.h | 2 | ||||
| -rw-r--r-- | sysdeps/i386/backtrace.c | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/alpha/syscalls.list | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sigstack.c | 61 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/syscalls.list | 3 |
6 files changed, 76 insertions, 3 deletions
@@ -1,3 +1,13 @@ +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. + 1998-06-18 19:49 Ulrich Drepper <drepper@cygnus.com> * intl/dcgettext.c: use complete type name. diff --git a/signal/signal.h b/signal/signal.h index b42d897f8b..aa51593b67 100644 --- a/signal/signal.h +++ b/signal/signal.h @@ -328,6 +328,8 @@ extern int sigstack __P ((__const struct sigstack *__ss, /* Alternate signal handler stack interface. This interface should always be preferred over `sigstack'. */ +extern int __sigaltstack __P ((__const struct sigaltstack *__ss, + struct sigaltstack *__oss)); extern int sigaltstack __P ((__const struct sigaltstack *__ss, struct sigaltstack *__oss)); diff --git a/sysdeps/i386/backtrace.c b/sysdeps/i386/backtrace.c index 5e84205b04..38635988f4 100644 --- a/sysdeps/i386/backtrace.c +++ b/sysdeps/i386/backtrace.c @@ -55,7 +55,7 @@ __backtrace (array, size) current = (struct layout *) ebp; while (cnt < size) { - if (current < esp || current > __libc_stack_end) + if ((void *) current < esp || (void *) current > __libc_stack_end) /* This means the address is out of range. Note that for the toplevel we see a frame pointer with value NULL which clearly is out of range. */ diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list index 0b38038d46..ff73a6dc9f 100644 --- a/sysdeps/unix/sysv/linux/alpha/syscalls.list +++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list @@ -16,6 +16,7 @@ semget - semget 3 __semget semget semctl - semctl 4 __semctl semctl osf_sigprocmask - osf_sigprocmask 2 __osf_sigprocmask +sigstack - sigstack 2 sigstack getpeername - getpeername 3 __getpeername getpeername getpriority - getpriority 2 __getpriority getpriority diff --git a/sysdeps/unix/sysv/linux/sigstack.c b/sysdeps/unix/sysv/linux/sigstack.c new file mode 100644 index 0000000000..bca7dc634e --- /dev/null +++ b/sysdeps/unix/sysv/linux/sigstack.c @@ -0,0 +1,61 @@ +/* Emulate sigstack function using sigalstack. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <signal.h> + + +int +sigstack (ss, oss) + const struct sigstack *ss; + struct sigstack *oss; +{ + stack_t sas; + stack_t *sasp = NULL; + stack_t osas; + stack_t *osasp = oss == NULL ? NULL : &osas; + int result; + + if (ss != NULL) + { + /* We have to convert the information. */ + sas.ss_sp = ss->ss_sp; + sas.ss_flags = ss->ss_onstack ? SS_ONSTACK : 0; + + /* For the size of the stack we have no value we can pass to the + kernel. This is why this function should not be used. We simply + assume that all the memory down to address zero (in case the stack + grows down) is available. */ + sas.ss_size = ss->ss_sp - NULL; + + sasp = &sas; + } + + /* Call the kernel. */ + result = __sigaltstack (sasp, osasp); + + /* Convert the result, if wanted and possible. */ + if (result == 0 && oss != NULL) + { + oss->ss_sp = osas.ss_sp; + oss->ss_onstack = (osas.ss_flags & SS_ONSTACK) != 0; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index 739e29c536..e80fd84568 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -72,8 +72,7 @@ setfsuid EXTRA setfsuid 1 setfsuid setpgid - setpgid 2 __setpgid setpgid setresgid EXTRA setresgid 3 setresgid setresuid EXTRA setresuid 3 setresuid -sigaltstack - sigaltstack 2 sigaltstack -sigstack - sigstack 2 sigstack +sigaltstack - sigaltstack 2 __sigaltstack sigaltstack sys_fstat fxstat fstat 2 __syscall_fstat sys_lstat lxstat lstat 2 __syscall_lstat sys_mknod xmknod mknod 3 __syscall_mknod |