Update.

1998-06-10  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/syscalls.list: Add sigaltstack and
	sigstack.

	* sysdeps/unix/sysv/linux/bits/sigstack.h: Add definitions of
	SS_ONSTACK, SS_DISABLE, MINSIGSTKSZ and SIGSTKSZ.
	* sysdeps/unix/sysv/linux/alpha/bits/sigstack.h: New file.

3 files changed, 73 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/alpha/bits/sigstack.h b/sysdeps/unix/sysv/linux/alpha/bits/sigstack.h
new file mode 100644
index 0000000000..bc993d130a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/bits/sigstack.h
@@ -0,0 +1,55 @@
+/* sigstack, sigaltstack definitions.
+   Copyright (C) 1998 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 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.  */
+
+#ifndef _SIGNAL_H
+# error "Never include this file directly.  Use <signal.h> instead"
+#endif
+
+
+/* Structure describing a signal stack (obsolete).  */
+struct sigstack
+  {
+    __ptr_t ss_sp;		/* Signal stack pointer.  */
+    int ss_onstack;		/* Nonzero if executing on this stack.  */
+  };
+
+
+/* Possible values for `ss_flags.'.  */
+enum
+{
+  SS_ONSTACK = 1,
+#define SS_ONSTACK	SS_ONSTACK
+  SS_DISABLE
+#define SS_DISABLE	SS_DISABLE
+};
+
+/* Minimum stack size for a signal handler.  */
+#define MINSIGSTKSZ	4096
+
+/* System default stack size.  */
+#define SIGSTKSZ	16384
+
+
+/* Alternate, preferred interface.  */
+typedef struct sigaltstack
+  {
+    __ptr_t ss_sp;
+    int ss_flags;
+    size_t ss_size;
+  } stack_t;
diff --git a/sysdeps/unix/sysv/linux/bits/sigstack.h b/sysdeps/unix/sysv/linux/bits/sigstack.h
index a86473839c..905e87fd95 100644
--- a/sysdeps/unix/sysv/linux/bits/sigstack.h
+++ b/sysdeps/unix/sysv/linux/bits/sigstack.h
@@ -30,6 +30,22 @@ struct sigstack
   };
 
 
+/* Possible values for `ss_flags.'.  */
+enum
+{
+  SS_ONSTACK = 1,
+#define SS_ONSTACK	SS_ONSTACK
+  SS_DISABLE
+#define SS_DISABLE	SS_DISABLE
+};
+
+/* Minimum stack size for a signal handler.  */
+#define MINSIGSTKSZ	2048
+
+/* System default stack size.  */
+#define SIGSTKSZ	8192
+
+
 /* Alternate, preferred interface.  */
 typedef struct sigaltstack
   {
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index f606ed10bb..739e29c536 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -72,6 +72,8 @@ 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
 sys_fstat	fxstat	fstat		2	__syscall_fstat
 sys_lstat	lxstat	lstat		2	__syscall_lstat
 sys_mknod	xmknod	mknod		3	__syscall_mknod