[PATCH 5/9] Rearrange symfile_bfd_open

[Gary Benson <gbenson@redhat.com>]

symfile_bfd_open handles what were remote files as a special case.
Now that remote files are replaced with target the reverse is true
and the BFD opening, format checking and error printing code is
essentially duplicated.  This commit rearranges symfile_bfd_open
to treat local files as a special case, removing the duplication.

gdb/ChangeLog:

	* symfile.c (symfile_bfd_open): Reorder to remove duplicated
	checks and error messages.
---
 gdb/ChangeLog |    5 ++++
 gdb/symfile.c |   69 ++++++++++++++++++++++++--------------------------------
 2 files changed, 35 insertions(+), 39 deletions(-)

diff --git a/gdb/symfile.c b/gdb/symfile.c
index 0d8dae7..0c35ffa 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -1718,60 +1718,51 @@ set_initial_language (void)
    absolute).  In case of trouble, error() is called.  */
 
 bfd *
-symfile_bfd_open (const char *cname)
+symfile_bfd_open (const char *name)
 {
   bfd *sym_bfd;
-  int desc;
-  char *name, *absolute_name;
-  struct cleanup *back_to;
+  int desc = -1;
+  struct cleanup *back_to = make_cleanup (null_cleanup, 0);
 
-  if (is_target_filename (cname))
+  if (!is_target_filename (name))
     {
-      sym_bfd = gdb_bfd_open (cname, gnutarget, -1);
-      if (!sym_bfd)
-	error (_("`%s': can't open to read symbols: %s."), cname,
-	       bfd_errmsg (bfd_get_error ()));
-
-      if (!bfd_check_format (sym_bfd, bfd_object))
-	{
-	  make_cleanup_bfd_unref (sym_bfd);
-	  error (_("`%s': can't read symbols: %s."), cname,
-		 bfd_errmsg (bfd_get_error ()));
-	}
+      char *expanded_name, *absolute_name;
 
-      return sym_bfd;
-    }
-
-  name = tilde_expand (cname);	/* Returns 1st new malloc'd copy.  */
+      expanded_name = tilde_expand (name); /* Returns 1st new malloc'd copy.  */
 
-  /* Look down path for it, allocate 2nd new malloc'd copy.  */
-  desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, name,
-		O_RDONLY | O_BINARY, &absolute_name);
+      /* Look down path for it, allocate 2nd new malloc'd copy.  */
+      desc = openp (getenv ("PATH"),
+		    OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH,
+		    expanded_name, O_RDONLY | O_BINARY, &absolute_name);
 #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__)
-  if (desc < 0)
-    {
-      char *exename = alloca (strlen (name) + 5);
+      if (desc < 0)
+	{
+	  char *exename = alloca (strlen (expanded_name) + 5);
 
-      strcat (strcpy (exename, name), ".exe");
-      desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH,
-		    exename, O_RDONLY | O_BINARY, &absolute_name);
-    }
+	  strcat (strcpy (exename, expanded_name), ".exe");
+	  desc = openp (getenv ("PATH"),
+			OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH,
+			exename, O_RDONLY | O_BINARY, &absolute_name);
+	}
 #endif
-  if (desc < 0)
-    {
-      make_cleanup (xfree, name);
-      perror_with_name (name);
-    }
+      if (desc < 0)
+	{
+	  make_cleanup (xfree, expanded_name);
+	  perror_with_name (expanded_name);
+	}
 
-  xfree (name);
-  name = absolute_name;
-  back_to = make_cleanup (xfree, name);
+      xfree (expanded_name);
+      make_cleanup (xfree, absolute_name);
+      name = absolute_name;
+    }
 
   sym_bfd = gdb_bfd_open (name, gnutarget, desc);
   if (!sym_bfd)
     error (_("`%s': can't open to read symbols: %s."), name,
 	   bfd_errmsg (bfd_get_error ()));
-  bfd_set_cacheable (sym_bfd, 1);
+
+  if (!gdb_bfd_has_target_filename (sym_bfd))
+    bfd_set_cacheable (sym_bfd, 1);
 
   if (!bfd_check_format (sym_bfd, bfd_object))
     {
-- 
1.7.1