Add support to readelf to decode and display the contents of .debug_ranges

sections.

binutils/ChangeLog

@@ -1,3 +1,64 @@
+2004-11-03  Nick Clifton  <nickc@redhat.com>
+
+	* readelf.c (do_debug_ranges): New variable.
+	(usage): Document new switch: -wR or --debug-dump=Ranges.
+	(parse_args): Handle new switch.  Replace switch statement for the
+	long options with a more compact table structure.
+	(process_section_headers): Allow the dumping of .debug_ranges
+	sections if so requested.
+	(debug_displays): Likewise.
+	(load_debug_range): New function: Grabs the contents of a
+	.debug_ranges section.
+	(free_debug_range): New function: Releases the grabbed
+	.debug_ranges section.
+	(decode_64bit_range): New function: Displays a 64-bit range in a
+	.debug_ranges section.
+	(decode_range): New function: Displays a 32-bit range in a
+	.debug_ranges section.
+	(read_and_display_attr_value): Record the value of DW_AT_low_pc
+	attributes.  Use decode_ranges() to display a DW_AT_ranges
+	attribute.
+	(display_debug_info): Use load_debug_range() and
+	free_debug_range().
+	(display_64bit_debug_ranges): New function.  Displays the contents
+	of a 64-bit format .debug_ranges section.
+	(display_debug_ranges): New function: Displays the contents of a
+	32-bit .debug_ranges section.
+	
+	(main): Move cmdline_dump_sects and num_cmdline_dump_sects into the
+	global scope.
+	(process_object): Initialise the dump_sects array from the
+	cmdline_dump_sects array before processing each object file.
+
+	(streq, strneq): New macros.  Use them to replace occurrences of
+	strcmp() and strncmp().
+
+	(debug_information): New structure array to replace
+	debug_line_pointer_sizes array.
+	(num_debug_info_entries): New variable to replace
+	num_debug_line_pointers.
+	(get_pointer_size_of_comp_unit): New function: Returns the pointer
+	size of a given compilation unit.
+	(get_debug_info): New function to replace
+	get_debug_line_pointer_sizes.
+	(display_debug_lines): Use the new functions.
+	(display_debug_loc): Likewise.
+	
+	(disassemble_section): Change return type to int.
+	(display_debug_lines): Move local variables to their
+	innermost scope.
+	(display_debug_section): Likewise.  Also record the return value
+	of functions called and pass this back to the parent.  Also only
+	warn about undumped sections when the user explicitly requested
+	their dumping.
+
+	(debug_apply_rela_addends): Allow relocations against STT_OBJECT
+	types as well.
+	
+	* NEWS: Mention the support for decoding .debug_ranges sections.
+	* doc/binutils.texi: Document the new command line switch to
+	readelf.
+
 2004-11-03  Randolph Chung  <tausq@debian.org>
 
 	* readelf.c (ia64_unw_aux_info, ia64_unw_table_entry): Rename from

binutils/NEWS

@@ -1,5 +1,10 @@
 -*- text -*-
 
+* readelf can now display address ranges from .debug_range sections.  This
+  happens automatically when a DW_AT_range attribute is encountered.  The
+  command line switch --debug-dump=Ranges (or -wR) can also be used to display
+  the contents of the .debug_range section.
+
 * nm and objdump now have a switch "--special-syms" to enable the displaying of
   symbols which the target considers to be special.  By default these symbols
   are no longer displayed.  Currently the only special symbols are the Mapping

binutils/doc/binutils.texi

@@ -3153,8 +3153,8 @@ readelf [@option{-a}|@option{--all}]
         [@option{-A}|@option{--arch-specific}]
         [@option{-D}|@option{--use-dynamic}]
         [@option{-x} <number>|@option{--hex-dump=}<number>]
-        [@option{-w[liaprmfFso]}|
-         @option{--debug-dump}[=line,=info,=abbrev,=pubnames,=ranges,=macro,=frames,=frames-interp,=str,=loc]]
+        [@option{-w[liaprmfFsoR]}|
+         @option{--debug-dump}[=line,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]]
         [@option{-I}|@option{-histogram}]
         [@option{-v}|@option{--version}]
         [@option{-W}|@option{--wide}]
@@ -3271,8 +3271,8 @@ symbols section.
 @itemx --hex-dump=<number>
 Displays the contents of the indicated section as a hexadecimal dump.
 
-@item -w[liaprmfFso]
-@itemx --debug-dump[=line,=info,=abbrev,=pubnames,=ranges,=macro,=frames,=frames-interp,=str,=loc]
+@item -w[liaprmfFsoR]
+@itemx --debug-dump[=line,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]
 Displays the contents of the debug sections in the file, if any are
 present.  If one of the optional letters or words follows the switch
 then only data found in those specific sections will be dumped.