* fbsd-nat.c: New files with cleaned up contents of fbsd-proc.c.

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

1 files changed, 181 insertions, 0 deletions

diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c
new file mode 100644
index 0000000..b7045d4
--- /dev/null
+++ b/gdb/fbsd-nat.c
@@ -0,0 +1,181 @@
+/* Native-dependent code for FreeBSD.
+
+   Copyright 2002, 2003, 2004 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 "defs.h"
+#include "gdbcore.h"
+#include "inferior.h"
+#include "regcache.h"
+#include "regset.h"
+
+#include "gdb_assert.h"
+#include "gdb_string.h"
+#include <sys/procfs.h>
+#include <sys/types.h>
+
+#include "elf-bfd.h"
+#include "fbsd-nat.h"
+
+/* Return a the name of file that can be opened to get the symbols for
+   the child process identified by PID.  */
+
+char *
+fbsd_pid_to_exec_file (int pid)
+{
+  char *path;
+  char *buf;
+
+  path = xstrprintf ("/proc/%d/file", pid);
+  buf = xcalloc (MAXPATHLEN, sizeof (char));
+  make_cleanup (xfree, path);
+  make_cleanup (xfree, buf);
+
+  if (readlink (path, buf, MAXPATHLEN) > 0)
+    return buf;
+
+  return NULL;
+}
+
+static int
+fbsd_read_mapping (FILE *mapfile, unsigned long *start, unsigned long *end,
+		   char *protection)
+{
+  /* FreeBSD 5.1-RELEASE uses a 256-byte buffer.  */
+  char buf[256];
+  int resident, privateresident;
+  unsigned long obj;
+  int ret = EOF;
+
+  /* As of FreeBSD 5.0-RELEASE, the layout is described in
+     /usr/src/sys/fs/procfs/procfs_map.c.  Somewhere in 5.1-CURRENT a
+     new column was added to the procfs map.  Therefore we can't use
+     fscanf since we need to support older releases too.  */
+  if (fgets (buf, sizeof buf, mapfile) != NULL)
+    ret = sscanf (buf, "%lx %lx %d %d %lx %s", start, end,
+		  &resident, &privateresident, &obj, protection);
+
+  return (ret != 0 && ret != EOF);
+}
+
+/* Iterate over all the memory regions in the current inferior,
+   calling FUNC for each memory region.  OBFD is passed as the last
+   argument to FUNC.  */
+
+int
+fbsd_find_memory_regions (int (*func) (CORE_ADDR, unsigned long,
+				       int, int, int, void *),
+			  void *obfd)
+{
+  pid_t pid = ptid_get_pid (inferior_ptid);
+  char *mapfilename;
+  FILE *mapfile;
+  unsigned long start, end, size;
+  char protection[4];
+  int read, write, exec;
+
+  mapfilename = xstrprintf ("/proc/%ld/map", (long) pid);
+  mapfile = fopen (mapfilename, "r");
+  if (mapfile == NULL)
+    error ("Couldn't open %s\n", mapfilename);
+
+  if (info_verbose)
+    fprintf_filtered (gdb_stdout, 
+		      "Reading memory regions from %s\n", mapfilename);
+
+  /* Now iterate until end-of-file.  */
+  while (fbsd_read_mapping (mapfile, &start, &end, &protection[0]))
+    {
+      size = end - start;
+
+      read = (strchr (protection, 'r') != 0);
+      write = (strchr (protection, 'w') != 0);
+      exec = (strchr (protection, 'x') != 0);
+
+      if (info_verbose)
+	{
+	  fprintf_filtered (gdb_stdout, 
+			    "Save segment, %ld bytes at 0x%s (%c%c%c)\n", 
+			    size, paddr_nz (start),
+			    read ? 'r' : '-',
+			    write ? 'w' : '-',
+			    exec ? 'x' : '-');
+	}
+
+      /* Invoke the callback function to create the corefile segment. */
+      func (start, size, read, write, exec, obfd);
+    }
+
+  fclose (mapfile);
+  return 0;
+}
+
+/* Create appropriate note sections for a corefile, returning them in
+   allocated memory.  */
+
+char *
+fbsd_make_corefile_notes (bfd *obfd, int *note_size)
+{
+  struct gdbarch *gdbarch = current_gdbarch;
+  const struct regcache *regcache = current_regcache;
+  gregset_t gregs;
+  fpregset_t fpregs;
+  char *note_data = NULL;
+  Elf_Internal_Ehdr *i_ehdrp;
+  const struct regset *regset;
+  size_t size;
+
+  /* Put a "FreeBSD" label in the ELF header.  */
+  i_ehdrp = elf_elfheader (obfd);
+  i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
+
+  gdb_assert (gdbarch_regset_from_core_section_p (gdbarch));
+
+  size = sizeof gregs;
+  regset = gdbarch_regset_from_core_section (gdbarch, ".reg", size);
+  gdb_assert (regset && regset->collect_regset);
+  regset->collect_regset (regset, regcache, -1, &gregs, size);
+
+  note_data = elfcore_write_prstatus (obfd, note_data, note_size,
+				      ptid_get_pid (inferior_ptid),
+				      stop_signal, &gregs);
+
+  size = sizeof fpregs;
+  regset = gdbarch_regset_from_core_section (gdbarch, ".reg2", size);
+  gdb_assert (regset && regset->collect_regset);
+  regset->collect_regset (regset, regcache, -1, &fpregs, size);
+
+  note_data = elfcore_write_prfpreg (obfd, note_data, note_size,
+				     &fpregs, sizeof (fpregs));
+
+  if (get_exec_file (0))
+    {
+      char *fname = strrchr (get_exec_file (0), '/') + 1;
+      char *psargs = xstrdup (fname);
+
+      if (get_inferior_args ())
+	psargs = reconcat (psargs, psargs, " ", get_inferior_args (), NULL);
+
+      note_data = elfcore_write_prpsinfo (obfd, note_data, note_size,
+					  fname, psargs);
+    }
+
+  make_cleanup (xfree, note_data);
+  return note_data;
+}