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authorUlrich Drepper <drepper@redhat.com>1998-06-18 21:50:38 +0000
committerUlrich Drepper <drepper@redhat.com>1998-06-18 21:50:38 +0000
commitdfab448bd8352b372814ca8df0651612296d8e8e (patch)
tree2f8689370e57fda3b8ef8fb96229c6f51ee62a56
parent8cb569b756c19125593e556efa7c380203ff3787 (diff)
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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.
-rw-r--r--ChangeLog10
-rw-r--r--signal/signal.h2
-rw-r--r--sysdeps/i386/backtrace.c2
-rw-r--r--sysdeps/unix/sysv/linux/alpha/syscalls.list1
-rw-r--r--sysdeps/unix/sysv/linux/sigstack.c61
-rw-r--r--sysdeps/unix/sysv/linux/syscalls.list3
6 files changed, 76 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index 2b901c02e3..96a9bdaeca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -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