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Ali Tamur 7ba99d2188 DWARF 5 support: Handle line table and file indexes
*  Fix handling of file and directory indexes in line tables; in DWARF 5 the
indexes are zero-based. Make file_names field private to abstract this detail
from the clients. Introduce file_names, is_valid_file_index and
file_names_size methods. Reflect these changes in clients.
*  Handle DW_FORM_data16 in read_formatted_entries; it is used to record MD5
of the file entries in DWARF 5.
*  Fix a bug in line header parsing that calculates the length of the header
incorrectly. (Seemingly this manifests itself only in DWARF 5).

Tested with CC=/usr/bin/gcc (version 8.3.0) against master branch (also with
-gsplit-dwarf and -gdwarf-4 flags) and there was no increase in the set of
tests that fails. (gdb still cannot debug a 'hello world' program with DWARF 5,
so for the time being, this is all we care about).

This is part of an effort to support DWARF 5 in gdb.

gdb/ChangeLog:

	* dwarf2read.c (dir_index): Change type.
	(file_name_index): Likewise.
	(line_header::include_dir_at): Change comment and implementation on
	whether it is DWARF 5.
	(line_header::is_valid_file_index): New function.
	(line_header::file_name_at): Change comment and implementation on
	whether it is DWARF 5.
	(line_header::file_names): Change to private field renamed as
	m_file_names and introduce a new accessor method.
	(line_header::file_names_size): New method.
	(line_header::include_dirs): Change to private field and rename as
	m_include_dirs.
	(dw2_get_file_names_reader): Define local var at a smaller scope and
	reflect API change.
	(dwarf2_cu::setup_type_unit_groups): Reflect API change.
	(process_structure_scope): Likewise.
	(line_header::add_include_dir): Change message and reflect renaming.
	(line_header::add_file_name): Likewise.
	(read_formatted_entries): Handle DW_FORM_data16.
	(dwarf_decode_line_header): Fix line header length calculation.
	(psymtab_include_file_name): Change comment and API.
	(lnp_state_machine::m_file): Update comment and reflect type change.
	(lnp_state_machine::record_line): Reflect type change.
	(dwarf_decode_lines): Reflect API change.
	(file_file_name): Likewise.
	(file_full_name): Likewise.
2019-10-21 14:22:12 -07:00
bfd ar P support 2019-10-21 16:13:39 +10:30
binutils ar P support 2019-10-21 16:13:39 +10:30
config
contrib contrib: Update dg-extract-results.* from gcc 2019-10-21 15:26:48 +01:00
cpu
elfcpp
etc
gas qsort: tc-xtensa.c tidy 2019-10-16 11:03:34 +10:30
gdb DWARF 5 support: Handle line table and file indexes 2019-10-21 14:22:12 -07:00
gnulib
gold
gprof
include PR13616, linker should pad executable sections with nops, not zeros 2019-10-16 23:07:27 +10:30
intl
ld [ld] Fix failure of pr19161 on hppa*-*linux*. 2019-10-19 13:01:29 -04:00
libctf libctf: mark swap.h inline functions as static 2019-10-16 11:12:23 -04:00
libdecnumber
libiberty
opcodes Fix potential illegal memory access when disassembling corrupt RX binaries. 2019-10-16 12:56:58 +01:00
readline
sim
texinfo
zlib
.cvsignore
.gitattributes
.gitignore
ar-lib
ChangeLog Add libctf to src-release.sh:GDB_SUPPORT_DIRS 2019-10-17 14:00:51 -04:00
compile
config-ml.in
config.guess
config.rpath
config.sub
configure
configure.ac
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def
Makefile.in
Makefile.tpl
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
multilib.am
README
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setup.com
src-release.sh Add libctf to src-release.sh:GDB_SUPPORT_DIRS 2019-10-17 14:00:51 -04:00
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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.