* solib-svr4.c (svr4_truncate_ptr): New function.

[deliverable/binutils-gdb.git] / gdb / solib.c

diff --git a/gdb/solib.c b/gdb/solib.c
index a2f4c81d2529e8600af54ff443a51a3c912423ce..2aa87e342083255f64864805148f810af8f053d5 100644 (file)
--- a/gdb/solib.c
+++ b/gdb/solib.c
@@ -131,10 +131,33 @@ solib_open (char *in_pathname, char **found_pathname)
       found_file = open (temp_pathname, O_RDONLY, 0);
     }
 
+  /* If the search in solib_absolute_prefix failed, and the path name is
+     absolute at this point, make it relative.  (openp will try and open the
+     file according to its absolute path otherwise, which is not what we want.)
+     Affects subsequent searches for this solib.  */
+  if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname))
+    {
+      /* First, get rid of any drive letters etc.  */
+      while (!IS_DIR_SEPARATOR (*in_pathname))
+        in_pathname++;
+
+      /* Next, get rid of all leading dir separators.  */
+      while (IS_DIR_SEPARATOR (*in_pathname))
+        in_pathname++;
+    }
+  
   /* If not found, next search the solib_search_path (if any).  */
   if (found_file < 0 && solib_search_path != NULL)
     found_file = openp (solib_search_path,
                        1, in_pathname, O_RDONLY, 0, &temp_pathname);
+  
+  /* If not found, next search the solib_search_path (if any) for the basename
+     only (ignoring the path).  This is to allow reading solibs from a path
+     that differs from the opened path.  */
+  if (found_file < 0 && solib_search_path != NULL)
+    found_file = openp (solib_search_path, 
+                        1, lbasename (in_pathname), O_RDONLY, 0,
+                        &temp_pathname);
 
   /* If not found, next search the inferior's $PATH environment variable. */
   if (found_file < 0 && solib_search_path != NULL)
@@ -493,7 +516,8 @@ update_solib_list (int from_tty, struct target_ops *target)
 
    SYNOPSIS
 
-   void solib_add (char *pattern, int from_tty, struct target_ops *TARGET)
+   void solib_add (char *pattern, int from_tty, struct target_ops
+   *TARGET, int readsyms)
 
    DESCRIPTION
 
@@ -501,10 +525,13 @@ update_solib_list (int from_tty, struct target_ops *target)
    match PATTERN.  (If we've already read a shared object's symbol
    info, leave it alone.)  If PATTERN is zero, read them all.
 
+   If READSYMS is 0, defer reading symbolic information until later
+   but still do any needed low level processing.
+
    FROM_TTY and TARGET are as described for update_solib_list, above.  */
 
 void
-solib_add (char *pattern, int from_tty, struct target_ops *target)
+solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms)
 {
   struct so_list *gdb;
 
@@ -536,7 +563,7 @@ solib_add (char *pattern, int from_tty, struct target_ops *target)
                printf_unfiltered ("Symbols already loaded for %s\n",
                                   gdb->so_name);
            }
-         else
+         else if (readsyms)
            {
              if (catch_errors
                  (symbol_add_stub, gdb,
@@ -591,25 +618,13 @@ info_sharedlibrary_command (char *ignore, int from_tty)
   int header_done = 0;
   int addr_width;
   char *addr_fmt;
-  int arch_size;
-
-  if (exec_bfd == NULL)
-    {
-      printf_unfiltered ("No executable file.\n");
-      return;
-    }
-
-  arch_size = bfd_get_arch_size (exec_bfd);
-  if (arch_size == -1)
-    arch_size = bfd_arch_bits_per_address(exec_bfd);
 
-  /* Default to 32-bit in case of failure.  */
-  if (arch_size == 32 || arch_size == -1)
+  if (TARGET_PTR_BIT == 32)
     {
       addr_width = 8 + 4;
       addr_fmt = "08l";
     }
-  else if (arch_size == 64)
+  else if (TARGET_PTR_BIT == 64)
     {
       addr_width = 16 + 4;
       addr_fmt = "016l";
@@ -617,8 +632,8 @@ info_sharedlibrary_command (char *ignore, int from_tty)
   else
     {
       internal_error (__FILE__, __LINE__,
-                     "bfd_get_arch_size() returned unknown size %d",
-                     arch_size);
+                     "TARGET_PTR_BIT returned unknown size %d",
+                     TARGET_PTR_BIT);
     }
 
   update_solib_list (from_tty, 0);
@@ -806,7 +821,7 @@ static void
 sharedlibrary_command (char *args, int from_tty)
 {
   dont_repeat ();
-  solib_add (args, from_tty, (struct target_ops *) 0);
+  solib_add (args, from_tty, (struct target_ops *) 0, 1);
 }
 
 /* LOCAL FUNCTION