old-cross-binutils/ld
H.J. Lu ca3fe95e46 Add extern_protected_data and set it for x86
With copy relocation, address of protected data defined in the shared
library may be external.  This patch adds extern_protected_data and
changes _bfd_elf_symbol_refs_local_p to return false for protected data
if extern_protected_data is true.

bfd/

	PR ld/pr15228
	PR ld/pr17709
	* elf-bfd.h (elf_backend_data): Add extern_protected_data.
	* elf32-i386.c (elf_backend_extern_protected_data): New.
	Defined to 1.
	* elf64-x86-64.c (elf_backend_extern_protected_data): Likewise.
	* elflink.c (_bfd_elf_adjust_dynamic_copy): Don't error on
	copy relocs against protected symbols if extern_protected_data
	is true.
	(_bfd_elf_symbol_refs_local_p): Don't return true on protected
	non-function symbols if extern_protected_data is true.
	* elfxx-target.h (elf_backend_extern_protected_data): New.
	Default to 0.
	(elfNN_bed): Initialize extern_protected_data with
	elf_backend_extern_protected_data.

ld/testsuite/

	PR ld/pr15228
	PR ld/pr17709
	* ld-i386/i386.exp (i386tests): Add a test for PR ld/17709.
	* ld-i386/pr17709-nacl.rd: New file.
	* ld-i386/pr17709.rd: Likewise.
	* ld-i386/pr17709a.s: Likewise.
	* ld-i386/pr17709b.s: Likewise.
	* ld-i386/protected3.d: Updated.
	* ld-i386/protected3.s: Likewise.
	* ld-x86-64/pr17709-nacl.rd: New file.
	* ld-x86-64/pr17709.rd: Likewise.
	* ld-x86-64/pr17709a.s: Likewise.
	* ld-x86-64/pr17709b.s: Likewise.
	* ld-x86-64/protected3.d: Updated.
	* ld-x86-64/protected3.s: Likewise.
	* ld-x86-64/x86-64.exp (x86_64tests): Add a test for PR ld/17709.
2015-03-05 06:34:53 -08:00
..
emulparams Adds support for generating notes in V850 binaries. 2015-02-24 17:54:09 +00:00
emultempl Adds support for generating notes in V850 binaries. 2015-02-24 17:54:09 +00:00
po ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
scripttempl Adds support for generating notes in V850 binaries. 2015-02-24 17:54:09 +00:00
testsuite Add extern_protected_data and set it for x86 2015-03-05 06:34:53 -08:00
.gitignore bfd/binutils/gas/gprof/ld/libiberty/opcodes: add .gitignore 2010-12-09 09:03:18 +00:00
aclocal.m4 * configure.in (AC_CHECK_FUNCS): Add setlocale. 2012-04-05 08:43:41 +00:00
ChangeLog Correct -z nocopyreloc doc 2015-03-02 16:57:08 +10:30
ChangeLog-0001 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-0203 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2004 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2005 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2006 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2007 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2008 strip off +x bits on non-executable/script files 2013-12-07 02:03:03 -05:00
ChangeLog-2009 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2010 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2011 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2012 Rotate binutils ChangeLog for 2013 2013-01-02 17:06:32 +00:00
ChangeLog-2013 New Year - binutils ChangeLog rotation 2014-01-08 05:32:12 -08:00
ChangeLog-2014 ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ChangeLog-9197 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-9899 Add copyright notices 2012-12-10 12:48:03 +00:00
config.in Use mmap and cache the view buffer for get_view 2015-02-06 09:05:57 -08:00
configure Use mmap and cache the view buffer for get_view 2015-02-06 09:05:57 -08:00
configure.ac Use mmap and cache the view buffer for get_view 2015-02-06 09:05:57 -08:00
configure.host ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
configure.tgt Add support for the h8300-linux target. 2015-02-23 17:04:53 +00:00
deffile.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
deffilep.y ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dep-in.sed * dep-in.sed: Don't use \n in replacement part of s command. 2009-06-04 06:57:56 +00:00
elf-hints-local.h Remove trailing white spaces in ld 2013-01-10 20:08:03 +00:00
fdl.texi etc/ChangeLog 2010-06-08 10:30:56 +00:00
gen-doc.texi ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
genscrba.sh ld: 2008-01-11 09:11:18 +00:00
genscripts.sh ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
h8-doc.texi ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ld.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ld.texinfo Correct -z nocopyreloc doc 2015-03-02 16:57:08 +10:30
ldbuildid.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldbuildid.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldcref.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldctor.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldctor.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldemul.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldemul.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldexp.c Allow symbols in MEMORY region specification 2015-01-28 15:06:48 +10:30
ldexp.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldfile.c PR ld/17973 LTO file syms 2015-02-14 23:41:54 +10:30
ldfile.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldgram.y Allow symbols in MEMORY region specification 2015-01-28 15:06:48 +10:30
ldint.texinfo ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldlang.c Fixes a problem with the linker script parser not always handling the ! character in memort region attributes. 2015-02-27 16:19:57 +00:00
ldlang.h PR ld/17973 LTO file syms 2015-02-14 23:41:54 +10:30
ldlex-wrapper.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldlex.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldlex.l ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldmain.c Update plugin_maybe_claim 2015-02-07 11:01:22 -08:00
ldmain.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldmisc.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldmisc.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldver.c Correct printed year in copyright notices 2015-01-02 01:08:15 +10:30
ldver.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldwrite.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ldwrite.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
lexsup.c Fixes a problem where "ld -ixxx" would report an error of "ld: bad -rpath option". 2015-02-23 15:33:56 +00:00
MAINTAINERS ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
Makefile.am Fix recent h8300 configury changes 2015-02-27 11:47:20 +10:30
Makefile.in Fix recent h8300 configury changes 2015-02-27 11:47:20 +10:30
mri.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
mri.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
NEWS Mention support for LLVM plugin in NEWS 2015-02-13 07:54:21 -08:00
pe-dll.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
pe-dll.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
pep-dll.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
pep-dll.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
plugin.c PR ld/17973 LTO file syms 2015-02-14 23:41:54 +10:30
plugin.h Update plugin_maybe_claim 2015-02-07 11:01:22 -08:00
README ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
stamp-h.in
sysdep.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
testplug.c The initial support for LDPT_GET_VIEW 2015-01-28 10:27:31 -08:00
testplug2.c Add a testcase for PR ld/17973 2015-02-14 06:26:20 -08:00
testplug3.c Remove unused dump_tv_tag 2015-02-11 13:35:07 -08:00
TODO

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		README for LD

This is the GNU linker.  It is distributed with other "binary
utilities" which should be in ../binutils.  See ../binutils/README for
more general notes, including where to send bug reports.

There are many features of the linker:

* The linker uses a Binary File Descriptor library (../bfd)
  that it uses to read and write object files.  This helps
  insulate the linker itself from the format of object files.

* The linker supports a number of different object file
  formats.  It can even handle multiple formats at once:
  Read two input formats and write a third.

* The linker can be configured for cross-linking.

* The linker supports a control language.

* There is a user manual (ld.texinfo), as well as the
  beginnings of an internals manual (ldint.texinfo).

Installation
============

See ../binutils/README.

If you want to make a cross-linker, you may want to specify
a different search path of -lfoo libraries than the default.
You can do this by setting the LIB_PATH variable in ./Makefile
or using the --with-lib-path configure switch.

To build just the linker, make the target all-ld from the top level
directory (one directory above this one).

Porting to a new target
=======================

See the ldint.texinfo manual.

Reporting bugs etc
===========================

See ../binutils/README.

Known problems
==============

The Solaris linker normally exports all dynamic symbols from an
executable.  The GNU linker does not do this by default.  This is
because the GNU linker tries to present the same interface for all
similar targets (in this case, all native ELF targets).  This does not
matter for normal programs, but it can make a difference for programs
which try to dlopen an executable, such as PERL or Tcl.  You can make
the GNU linker export all dynamic symbols with the -E or
--export-dynamic command line option.

HP/UX 9.01 has a shell bug that causes the linker scripts to be
generated incorrectly.  The symptom of this appears to be "fatal error
- scanner input buffer overflow" error messages.  There are various
workarounds to this:
  * Build and install bash, and build with "make SHELL=bash".
  * Update to a version of HP/UX with a working shell (e.g., 9.05).
  * Replace "(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc)" in
    genscripts.sh with "sh ${srcdir}..." (no parens) and make sure the
    emulparams script used exports any shell variables it sets.

Copyright (C) 2012-2015 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.