Files
binutils-gdb/bfd
Alan Modra 60d67dc84b Rename u.weakdef and make it a circular list
This makes the elf_link_hash_entry weakdef field, currently used to
point from a weak symbol to a strong alias, a circular list so that
all aliases can be found from any of them.  A new flag, is_weakalias,
distinguishes the weak symbol from a strong alias, and is used in all
places where we currently test u.weakdef != NULL.

With the original u.weakdef handling it was possible to have two or
more weak symbols pointing via u.weakdef to a strong definition.
Obviously that situation can't map to a circular list; One or more of
the weak symbols must point at another weak alias rather than the
strong definition.  To handle that, I've added an accessor function to
return the strong definition.

	* elf-bfd.h (struct elf_link_hash_entry): Add is_weakalias.
	Rename u.weakdef to u.alias and update comment.
	(weakdef): New static inline function.
	* elflink.c (bfd_elf_record_link_assignment) Test is_weakalias
	rather than u.weakdef != NULL, and use weakdef function.
	(_bfd_elf_adjust_dynamic_symbol): Likewise.
	(_bfd_elf_fix_symbol_flags): Likewise.  Clear is_weakalias on
	all aliases if def has been overridden in a regular object, not
	u.weakdef.
	(elf_link_add_object_symbols): Delete new_weakdef flag.  Test
	is_weakalias and use weakdef.  Set is_weakalias and circular
	u.alias.  Update comments.
	(_bfd_elf_gc_mark_rsec): Test is_weakalias rather than
	u.weakdef != NULL and use weakdef function.
	* elf-m10300.c (_bfd_mn10300_elf_adjust_dynamic_symbol): Test
	is_weakalias rather than u.weakdef != NULL and use weakdef
	function.  Assert that def is strong defined.
	* elf32-arc.c (elf_arc_adjust_dynamic_symbol): Likewise.
	* elf32-arm.c (elf32_arm_adjust_dynamic_symbol): Likewise.
	* elf32-bfin.c (elf32_bfinfdpic_adjust_dynamic_symbol): Likewise.
	(bfin_adjust_dynamic_symbol): Likewise.
	* elf32-cr16.c (_bfd_cr16_elf_adjust_dynamic_symbol): Likewise.
	* elf32-cris.c (elf_cris_adjust_dynamic_symbol): Likewise.
	* elf32-frv.c (elf32_frvfdpic_adjust_dynamic_symbol): Likewise.
	* elf32-hppa.c (elf32_hppa_adjust_dynamic_symbol): Likewise.
	* elf32-i370.c (i370_elf_adjust_dynamic_symbol): Likewise.
	* elf32-lm32.c (lm32_elf_adjust_dynamic_symbol): Likewise.
	* elf32-m32r.c (m32r_elf_adjust_dynamic_symbol): Likewise.
	* elf32-m68k.c (elf_m68k_adjust_dynamic_symbol): Likewise.
	* elf32-metag.c (elf_metag_adjust_dynamic_symbol): Likewise.
	* elf32-microblaze.c (microblaze_elf_adjust_dynamic_symbol): Likewise.
	* elf32-nds32.c (nds32_elf_adjust_dynamic_symbol): Likewise.
	* elf32-nios2.c (nios2_elf32_adjust_dynamic_symbol): Likewise.
	* elf32-or1k.c (or1k_elf_adjust_dynamic_symbol): Likewise.
	* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Likewise.
	* elf32-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
	* elf32-score.c (s3_bfd_score_elf_adjust_dynamic_symbol): Likewise.
	* elf32-score7.c (s7_bfd_score_elf_adjust_dynamic_symbol): Likewise.
	* elf32-sh.c (sh_elf_adjust_dynamic_symbol): Likewise.
	* elf32-tic6x.c (elf32_tic6x_adjust_dynamic_symbol): Likewise.
	* elf32-tilepro.c (tilepro_elf_gc_mark_hook): Likewise.
	(tilepro_elf_adjust_dynamic_symbol): Likewise.
	* elf32-vax.c (elf_vax_adjust_dynamic_symbol): Likewise.
	* elf32-xtensa.c (elf_xtensa_adjust_dynamic_symbol): Likewise.
	* elf64-alpha.c (elf64_alpha_adjust_dynamic_symbol): Likewise.
	* elf64-hppa.c (elf64_hppa_adjust_dynamic_symbol): Likewise.
	* elf64-ia64-vms.c (elf64_ia64_adjust_dynamic_symbol): Likewise.
	* elf64-ppc.c (ppc64_elf_gc_mark_hook): Likewise.
	(ppc64_elf_adjust_dynamic_symbol): Likewise.
	* elf64-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
	* elf64-sh64.c (sh64_elf64_adjust_dynamic_symbol): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_adjust_dynamic_symbol): Likewise.
	* elfnn-ia64.c (elfNN_ia64_adjust_dynamic_symbol): Likewise.
	* elfnn-riscv.c (riscv_elf_adjust_dynamic_symbol): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_adjust_dynamic_symbol): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_gc_mark_hook): Likewise.
	(_bfd_sparc_elf_adjust_dynamic_symbol): Likewise.
	* elfxx-tilegx.c (tilegx_elf_gc_mark_hook): Likewise.
	(tilegx_elf_adjust_dynamic_symbol): Likewise.
	* elfxx-x86.c (_bfd_x86_elf_adjust_dynamic_symbol): Likewise.
2017-11-23 22:40:25 +10:30
..
2017-11-07 15:52:52 +10:30
2017-08-31 20:07:13 +09:30
2017-06-08 19:00:36 +02:00
2017-02-17 01:26:12 +00:00
2017-11-15 22:30:27 +10:30
2017-02-17 01:26:12 +00:00
2017-01-02 13:55:05 +10:30
2017-07-18 16:58:14 +01:00
2017-07-03 22:03:48 +09:30
2017-07-18 16:58:14 +01:00
2017-07-03 21:55:57 +09:30
2017-04-13 17:07:24 +09:30
2017-07-18 16:58:14 +01:00
2017-09-25 22:01:47 +09:30
2017-10-09 13:23:00 +10:30
2017-07-18 16:58:14 +01:00
2017-06-27 14:47:02 +05:30
2017-11-03 11:15:10 -07:00
2017-07-18 16:58:14 +01:00
2017-06-01 22:47:32 +09:30
2017-09-02 11:00:02 +09:30
2017-06-23 08:00:46 +02:00
2017-11-21 11:20:24 +10:30
2017-11-03 11:15:10 -07:00
2017-08-29 12:58:51 -07:00
2017-08-29 12:58:51 -07:00
2017-04-13 17:07:24 +09:30
2017-07-18 16:58:14 +01:00
2017-07-18 16:58:14 +01:00
2017-11-07 15:52:52 +10:30
2017-11-23 00:00:27 +00:00
2017-07-04 11:15:33 +02:00
2017-10-05 12:03:47 +10:30
2017-07-18 16:58:14 +01:00

This file contains invisible Unicode characters

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BFD is an object file library.  It permits applications to use the
same routines to process object files regardless of their format.

BFD is used by the GNU debugger, assembler, linker, and the binary
utilities.

The documentation on using BFD is scanty and may be occasionally
incorrect.  Pointers to documentation problems, or an entirely
rewritten manual, would be appreciated.

There is some BFD internals documentation in doc/bfdint.texi which may
help programmers who want to modify BFD.

BFD is normally built as part of another package.  See the build
instructions for that package, probably in a README file in the
appropriate directory.

BFD supports the following configure options:

  --target=TARGET
	The default target for which to build the library.  TARGET is
	a configuration target triplet, such as sparc-sun-solaris.
  --enable-targets=TARGET,TARGET,TARGET...
	Additional targets the library should support.  To include
	support for all known targets, use --enable-targets=all.
  --enable-64-bit-bfd
	Include support for 64 bit targets.  This is automatically
	turned on if you explicitly request a 64 bit target, but not
	for --enable-targets=all.  This requires a compiler with a 64
	bit integer type, such as gcc.
  --enable-shared
	Build BFD as a shared library.
  --with-mmap
	Use mmap when accessing files.  This is faster on some hosts,
	but slower on others.  It may not work on all hosts.

Report bugs with BFD to bug-binutils@gnu.org.

Patches are encouraged.  When sending patches, always send the output
of diff -u or diff -c from the original file to the new file.  Do not
send default diff output.  Do not make the diff from the new file to
the original file.  Remember that any patch must not break other
systems.  Remember that BFD must support cross compilation from any
host to any target, so patches which use ``#ifdef HOST'' are not
acceptable.  Please also read the ``Reporting Bugs'' section of the
gcc manual.

Bug reports without patches will be remembered, but they may never get
fixed until somebody volunteers to fix them.

Copyright (C) 2012-2017 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.