Create target sections for user-added symbol files.

Add the sections of the symbol files that are provided via
'add-symbol-file' to the set of current target sections.
User-added sections are removed upon notification of free_objfile
when their corresponding object file is deleted.

2013-10-29  Nicolas Blanc  <nicolas.blanc@intel.com>

	* exec.h (add_target_sections_of_objfile): New declaration.
	* exec.c (add_target_sections_of_objfile): New function.
	* symfile.c (add_symbol_file_command): Update current target sections.
	(symfile_free_objfile): New function.
	(_initialize_symfile): Register observer for free_objfile events.

Signed-off-by: Nicolas Blanc <nicolas.blanc@intel.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/gdb/exec.c b/gdb/exec.c
index 758cdc1..187c412 100644
--- a/gdb/exec.c
+++ b/gdb/exec.c
@@ -438,6 +438,51 @@ add_target_sections (void *owner,
     }
 }
 
+/* Add the sections of OBJFILE to the current set of target sections.  */
+
+void
+add_target_sections_of_objfile (struct objfile *objfile)
+{
+  struct target_section_table *table = current_target_sections;
+  struct obj_section *osect;
+  int space;
+  unsigned count = 0;
+  struct target_section *ts;
+
+  if (objfile == NULL)
+    return;
+
+  /* Compute the number of sections to add.  */
+  ALL_OBJFILE_OSECTIONS (objfile, osect)
+    {
+      if (bfd_get_section_size (osect->the_bfd_section) == 0)
+	continue;
+      count++;
+    }
+
+  if (count == 0)
+    return;
+
+  space = resize_section_table (table, count);
+
+  ts = table->sections + space;
+
+  ALL_OBJFILE_OSECTIONS (objfile, osect)
+    {
+      if (bfd_get_section_size (osect->the_bfd_section) == 0)
+	continue;
+
+      gdb_assert (ts < table->sections + space + count);
+
+      ts->addr = obj_section_addr (osect);
+      ts->endaddr = obj_section_endaddr (osect);
+      ts->the_bfd_section = osect->the_bfd_section;
+      ts->owner = (void *) objfile;
+
+      ts++;
+    }
+}
+
 /* Remove all target sections owned by OWNER.
    OWNER must be the same value passed to add_target_sections.  */