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Alexandre Oliva 9f27220911 LVU: dump loclists with locviews
When dumping location lists, also dump locview lists that may be
interspersed with them, and bring view pairs next to the corresponding
location list entries.

This patch supports DW_AT_GNU_locviews as a separate attribute for
DWARF4- loc_lists and split (dwo) loclists, as well as DWARF5
loclists.

It also supports, in DWARF5 loclists, the proposed
DW_LLE_GNU_view_pair loclist entry type proposed for DWARF6.


The tests use 32-bit DWARF, even on 64-bit targets, resolving offsets
to constants so as to reduce the risk that relocations be created for
them, or that the offsets be rejected as nonconstants.


The patch also adds an xfail to an unrelated test, namely dw5, so that
no unexpected fails remain on nds32*-elf, one of the tested targets.


Reviewed-by: Alan Modra <amodra@gmail.com>


for  include/ChangeLog

	* dwarf2.def (DW_AT_GNU_locviews): New.
	* dwarf2.h (enum dwarf_location_list_entry_type): Add
	DW_LLE_GNU_view_pair.
	(DW_LLE_view_pair): Define.

for  binutils/ChangeLog

	* dwarf.h (debug_info): Add loc_views and num_loc_views.
	* dwarf.c (vm1): New constant.
	(print_dwarf_view): New function.
	(read_and_display_attr_value): Support DW_AT_GNU_locviews.
	(process_debug_info): Keep num_loc_offsets and num_loc_views
	in sync.
	(display_view_pair_list): New function.
	(display_loc_list_dwo): Take vstart_ptr; update it.  Dump
	location view pairs before the range they apply to, when a
	viewlist augments the loc list.
	(display_loc_list): Likewise.  Check view numbers in range
	tests.
	(display_loclists_list): Likewise.  Handle view pair entries,
	and warn on trailing ones.
	(loc_views): New variable.
	(loc_offsets_compar): Compare loc_views if loc_offsets are the
	same.
	(display_debug_loc): Check and sort loc_views too.  Accept
	loc_view as expected_start.  Skip if lists and views are the
	same.  Dump locview list separately in order, and pass the
	locview list base to each list dump function.  Warn and skip
	overlap and hole checking if we find loclists and locviews to
	not be adjacent.
	* testsuite/binutils-all/locview-1.s: New.
	* testsuite/binutils-all/readelf.locview-1: New.
	* testsuite/binutils-all/locview-2.s: New.
	* testsuite/binutils-all/readelf.locview-2: New.
	* testsuite/binutils-all/readelf.exp: Run new tests.  Fix
	option spelling in pr18374 fail message.  XFAIL dw5 test on
	nds32*-elf.
2017-09-22 17:05:51 -03:00
bfd x86: Return -1 if bfd_canonicalize_dynamic_reloc returns 0 2017-09-22 07:25:16 -07:00
binutils LVU: dump loclists with locviews 2017-09-22 17:05:51 -03:00
config
cpu
elfcpp oops - changelog entry omitted from previous delta 2017-09-21 09:07:11 +01:00
etc
gas readelf: Handle E_MIPS_MACH_5900 2017-09-22 00:54:19 +01:00
gdb Get rid of "gdb_dirbuf" and use "getcwd (NULL, 0)" 2017-09-22 13:28:16 -04:00
gold [GOLD] Set non-exec stack for aarch64 2017-09-22 07:58:28 -07:00
gprof
include LVU: dump loclists with locviews 2017-09-22 17:05:51 -03:00
intl
ld Add a test for PR ld/22150 2017-09-22 07:05:53 -07:00
libdecnumber
libiberty Sync libiberty/ & include/ with GCC 2017-09-15 17:40:33 +01:00
opcodes
readline
sim [SIM, ARM] Fix build failure 2017-09-21 09:02:25 +01:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.