2003-06-19 Michael Snyder <msnyder@redhat.com>

	* linux-nat.h: New file.
	* linux-nat.c: Include linux-nat.h.
	* lin-lwp.c: Include linux-nat.h.
	Move struct lwp_info def to linux-nat.h.
	* linux-proc.c: Include linux-nat.h.
	(linux_make_note_section): Iterate over lwps instead of threads.
	(linux_do_thread_registers): Use lwp instead of merged pid.
	* config/nm-linux.h: Move miscelaneous def'ns to linux-nat.h.
	* Makefile.in (lin-lwp.o, linux-proc.o, linux-nat.o):
	Add dependency on linux_nat_h.

1 files changed, 70 insertions, 0 deletions

diff --git a/gdb/linux-nat.h b/gdb/linux-nat.h
new file mode 100644
index 00000000000..78312d71b31
--- /dev/null
+++ b/gdb/linux-nat.h
@@ -0,0 +1,70 @@
+/* Native debugging support for GNU/Linux (LWP layer).
+   Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* Structure describing an LWP.  */
+
+struct lwp_info
+{
+  /* The process id of the LWP.  This is a combination of the LWP id
+     and overall process id.  */
+  ptid_t ptid;
+
+  /* Non-zero if this LWP is cloned.  In this context "cloned" means
+     that the LWP is reporting to its parent using a signal other than
+     SIGCHLD.  */
+  int cloned;
+
+  /* Non-zero if we sent this LWP a SIGSTOP (but the LWP didn't report
+     it back yet).  */
+  int signalled;
+
+  /* Non-zero if this LWP is stopped.  */
+  int stopped;
+
+  /* Non-zero if this LWP will be/has been resumed.  Note that an LWP
+     can be marked both as stopped and resumed at the same time.  This
+     happens if we try to resume an LWP that has a wait status
+     pending.  We shouldn't let the LWP run until that wait status has
+     been processed, but we should not report that wait status if GDB
+     didn't try to let the LWP run.  */
+  int resumed;
+
+  /* If non-zero, a pending wait status.  */
+  int status;
+
+  /* Non-zero if we were stepping this LWP.  */
+  int step;
+
+  /* Next LWP in list.  */
+  struct lwp_info *next;
+};
+
+/* Read/write to target memory via Linux's "proc file system".  */
+struct mem_attrib;
+extern int linux_proc_xfer_memory (CORE_ADDR addr, char *myaddr, int len,
+				   int write, struct mem_attrib *attrib,
+				   struct target_ops *target);
+
+extern void linux_record_stopped_pid (int pid);
+
+/* Iterator function for lin-lwp's lwp list.  */
+struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *, 
+						     void *), 
+				    void *data);