PATCH: Provde a pid to filename conversion for NetBSD

[Nick Hudson <skrll@netbsd.org>]

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Hi,

Here's a change to provide a pid to filename conversion routine for NetBSD.

If it's OK can someone please commit.

Thanks,
Nick

2006-11-30  Nick Hudson  <skrll@netbsd.org>

        * i386nbsd-nat.c: Include "nbsd-nat.h".
        (_initialize_i386nbsd_nat): Update target vector to use
        nbsd_pid_to_exec_file.

        * config/i386/nbsdelf.mh (NATDEPFILES): Add nbsd-nat.o

        * nbsd-nat.c: New file.
        * nbsd-nat.h: New file.
        * Makefile.in (ALLDEPFILES): Add nbsd-nat.c.
        (nbsd_nat_h): New variable.
        (nbsd-nat.o): New dependency.


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? nbsd-nat.c
? nbsd-nat.h
Index: Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/Makefile.in,v
retrieving revision 1.856
diff -u -p -u -r1.856 Makefile.in
--- Makefile.in	28 Nov 2006 22:14:31 -0000	1.856
+++ Makefile.in	30 Nov 2006 13:15:37 -0000
@@ -758,6 +758,7 @@ mips_tdep_h = mips-tdep.h
 memory_map_h = memory-map.h $(memattr_h)
 mn10300_tdep_h = mn10300-tdep.h
 monitor_h = monitor.h
+nbsd_nat_h = nbsd-nat.h
 nbsd_tdep_h = nbsd-tdep.h
 nto_tdep_h = nto-tdep.h $(defs_h) $(solist_h) $(osabi_h) $(regset_h)
 objc_lang_h = objc-lang.h
@@ -1476,7 +1477,7 @@ ALLDEPFILES = \
 	mips-tdep.c mipsv4-nat.c \
 	mipsnbsd-nat.c mipsnbsd-tdep.c \
 	mips64obsd-nat.c mips64obsd-tdep.c \
-	nbsd-tdep.c obsd-tdep.c \
+	nbsd-nat.c nbsd-tdep.c obsd-tdep.c \
 	solib-osf.c \
 	somread.c solib-som.c $(HPREAD_SOURCE) \
 	posix-hdep.c \
@@ -2404,6 +2405,7 @@ ms1-tdep.o: ms1-tdep.c $(defs_h) $(frame
 	$(gdb_string_h) $(regcache_h) $(reggroups_h) $(gdbcore_h) \
 	$(trad_frame_h) $(inferior_h) $(dwarf2_frame_h) $(infcall_h) \
 	$(gdb_assert_h)
+nbsd-nat.o: nbsd-nat.c $(defs_h) $(nbsd_nat_h)
 nbsd-tdep.o: nbsd-tdep.c $(defs_h) $(gdb_string_h) $(solib_svr4_h)
 nlmread.o: nlmread.c $(defs_h) $(bfd_h) $(symtab_h) $(symfile_h) \
 	$(objfiles_h) $(buildsym_h) $(stabsread_h) $(block_h)
Index: i386nbsd-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/i386nbsd-nat.c,v
retrieving revision 1.16
diff -u -p -u -r1.16 i386nbsd-nat.c
--- i386nbsd-nat.c	17 Dec 2005 22:34:01 -0000	1.16
+++ i386nbsd-nat.c	30 Nov 2006 13:15:42 -0000
@@ -33,6 +33,7 @@
 #include <machine/frame.h>
 #include <machine/pcb.h>
 
+#include "nbsd-nat.h"
 #include "bsd-kvm.h"
 
 static int
@@ -79,9 +80,13 @@ void _initialize_i386nbsd_nat (void);
 void
 _initialize_i386nbsd_nat (void)
 {
-  /* We've got nothing to add to the common *BSD/i386 target.  */
-  add_target (i386bsd_target ());
+  struct target_ops *t;
 
+  /* Add some extra features to the common *BSD/i386 target.  */
+  t = i386bsd_target ();
+  t->to_pid_to_exec_file = nbsd_pid_to_exec_file;
+  add_target (t);
+ 
   /* Support debugging kernel virtual memory images.  */
   bsd_kvm_add_target (i386nbsd_supply_pcb);
 }
Index: config/i386/nbsdelf.mh
===================================================================
RCS file: /cvs/src/src/gdb/config/i386/nbsdelf.mh,v
retrieving revision 1.23
diff -u -p -u -r1.23 nbsdelf.mh
--- config/i386/nbsdelf.mh	24 Nov 2006 18:23:34 -0000	1.23
+++ config/i386/nbsdelf.mh	30 Nov 2006 13:15:42 -0000
@@ -1,5 +1,5 @@
 # Host: NetBSD/i386 ELF
 NATDEPFILES= fork-child.o inf-ptrace.o \
-	i386bsd-nat.o i386nbsd-nat.o bsd-kvm.o
+	nbsd-nat.o i386bsd-nat.o i386nbsd-nat.o bsd-kvm.o
 
 LOADLIBES= -lkvm

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/* NetBSD-specific methods for using the /proc file system.
   Copyright 2006 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.  */

#include <sys/param.h>

#include "defs.h"
#include "nbsd-nat.h"

char *
nbsd_pid_to_exec_file (int pid)
{
  size_t len = MAXPATHLEN;
  char *buf = xcalloc (len, sizeof (char));
  char *path;

  path = xstrprintf ("/proc/%d/exe", pid);
  if (readlink (path, buf, MAXPATHLEN) == -1)
    {
      xfree (buf);
      buf = NULL;
    }

  xfree (path);
  return buf;
}

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/* Native-dependent code for NetBSD.

   Copyright (C) 2006 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., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.  */

#ifndef NBSD_NAT_H
#define NBSD_NAT_H

/* Return a the name of file that can be opened to get the symbols for
   the child process identified by PID.  */

extern char *nbsd_pid_to_exec_file (int pid);

#endif /* nbsd-nat.h */