Commit Graph

3 Commits

Author SHA1 Message Date
Alan Modra
56fdab4773 Update more tests for objdump change
* testsuite/ld-i386/pr19636-1d-nacl.d: Adjust for objdump change.
	* testsuite/ld-i386/pr19636-2c-nacl.d: Likewise.
	* testsuite/ld-tic6x/shlib-1r.dd: Likewise.
	* testsuite/ld-x86-64/plt-nacl.pd: Likewise.
	* testsuite/ld-x86-64/pr19636-2d-nacl.d: Likewise.
2016-10-12 09:36:05 +10:30
Nick Clifton
a24bb4f0cc Enhance objdump so that it will use .got, .plt and .plt.got section symbols when disassembling, and it will use dynamic relocs to interpret entries in the PLT and GOT.
binutils * objdump.c (is_significant_symbol_name): New function.
	(remove_useless_symbols): Do not remove significanr symbols.
	(find_symbol_for_address): If an exact match for the specified
	address has not been found, try scanning the dynamic relocs to see
	if one of these matches the address.  If so, use the symbol
	associated with the reloc.
	(objdump_print_addr_with_symbol): Do not print offsets to symbols
	with no value.
	(disassemble_section): Only use dynamic relocs if the user
	requested this.
	(disassemble_data): Always load dynamic relocs if they are
	available.

ld	* ld-aarch64/emit-relocs-515-be.d: Adjust output to match change
	in objdump.
	* ld-aarch64/emit-relocs-515.d: Likewise.
	* ld-aarch64/emit-relocs-516-be.d: Likewise.
	* ld-aarch64/emit-relocs-516.d: Likewise.
	* ld-aarch64/farcall-b-plt.d: Likewise.
	* ld-aarch64/farcall-bl-plt.d: Likewise.
	* ld-aarch64/gc-plt-relocs.d: Likewise.
	* ld-aarch64/tls-desc-ie.d: Likewise.
	* ld-aarch64/tls-tiny-desc.d: Likewise.
	* ld-aarch64/tls-tiny-gd.d: Likewise.
	* ld-aarch64/tls-tiny-ie.d: Likewise.
	* ld-arm/arm-app-abs32.d: Likewise.
	* ld-arm/arm-app.d: Likewise.
	* ld-arm/arm-lib-plt32.d: Likewise.
	* ld-arm/arm-lib.d: Likewise.
	* ld-arm/armthumb-lib.d: Likewise.
	* ld-arm/cortex-a8-fix-b-plt.d: Likewise.
	* ld-arm/cortex-a8-fix-bcc-plt.d: Likewise.
	* ld-arm/cortex-a8-fix-bl-plt.d: Likewise.
	* ld-arm/cortex-a8-fix-bl-rel-plt.d: Likewise.
	* ld-arm/cortex-a8-fix-blx-plt.d: Likewise.
	* ld-arm/farcall-mixed-app-v5.d: Likewise.
	* ld-arm/farcall-mixed-app.d: Likewise.
	* ld-arm/farcall-mixed-app2.d: Likewise.
	* ld-arm/farcall-mixed-lib-v4t.d: Likewise.
	* ld-arm/farcall-mixed-lib.d: Likewise.
	* ld-arm/ifunc-10.dd: Likewise.
	* ld-arm/ifunc-14.dd: Likewise.
	* ld-arm/ifunc-15.dd: Likewise.
	* ld-arm/ifunc-3.dd: Likewise.
	* ld-arm/ifunc-4.dd: Likewise.
	* ld-arm/ifunc-9.dd: Likewise.
	* ld-arm/long-plt-format.d: Likewise.
	* ld-arm/mixed-app-v5.d: Likewise.
	* ld-arm/mixed-app.d: Likewise.
	* ld-arm/mixed-lib.d: Likewise.
	* ld-arm/tls-lib-loc.d: Likewise.
	* ld-cris/dso-pltdis1.d: Likewise.
	* ld-cris/dso-pltdis2.d: Likewise.
	* ld-cris/dso12-pltdis.d: Likewise.
	* ld-elf/symbolic-func.r: Likewise.
	* ld-frv/fdpic-pie-1.d: Likewise.
	* ld-frv/fdpic-pie-2.d: Likewise.
	* ld-frv/fdpic-pie-6.d: Likewise.
	* ld-frv/fdpic-pie-7.d: Likewise.
	* ld-frv/fdpic-pie-8.d: Likewise.
	* ld-frv/fdpic-shared-1.d: Likewise.
	* ld-frv/fdpic-shared-2.d: Likewise.
	* ld-frv/fdpic-shared-3.d: Likewise.
	* ld-frv/fdpic-shared-4.d: Likewise.
	* ld-frv/fdpic-shared-5.d: Likewise.
	* ld-frv/fdpic-shared-6.d: Likewise.
	* ld-frv/fdpic-shared-7.d: Likewise.
	* ld-frv/fdpic-shared-8.d: Likewise.
	* ld-frv/fdpic-shared-local-2.d: Likewise.
	* ld-frv/fdpic-shared-local-8.d: Likewise.
	* ld-frv/fdpic-static-1.d: Likewise.
	* ld-frv/fdpic-static-2.d: Likewise.
	* ld-frv/fdpic-static-6.d: Likewise.
	* ld-frv/fdpic-static-7.d: Likewise.
	* ld-frv/fdpic-static-8.d: Likewise.
	* ld-frv/tls-dynamic-2.d: Likewise.
	* ld-frv/tls-initial-shared-2.d: Likewise.
	* ld-frv/tls-relax-shared-2.d: Likewise.
	* ld-frv/tls-shared-2.d: Likewise.
	* ld-i386/plt-nacl.pd: Likewise.
	* ld-i386/plt-pic-nacl.pd: Likewise.
	* ld-i386/plt-pic.pd: Likewise.
	* ld-i386/plt.pd: Likewise.
	* ld-i386/pr19636-1d-nacl.d: Likewise.
	* ld-i386/pr19636-1d.d: Likewise.
	* ld-i386/pr19636-2c-nacl.d: Likewise.
	* ld-i386/pr19636-2c.d: Likewise.
	* ld-ifunc/ifunc-21-x86-64.d: Likewise.
	* ld-ifunc/ifunc-22-x86-64.d: Likewise.
	* ld-ifunc/pr17154-i386.d: Likewise.
	* ld-ifunc/pr17154-x86-64.d: Likewise.
	* ld-m68k/plt1-68020.d: Likewise.
	* ld-m68k/plt1-cpu32.d: Likewise.
	* ld-m68k/plt1-isab.d: Likewise.
	* ld-m68k/plt1-isac.d: Likewise.
	* ld-metag/shared.d: Likewise.
	* ld-metag/stub_pic_app.d: Likewise.
	* ld-metag/stub_pic_shared.d: Likewise.
	* ld-metag/stub_shared.d: Likewise.
	* ld-s390/tlsbin_64.dd: Likewise.
	* ld-s390/tlspic_64.dd: Likewise.
	* ld-tic6x/shlib-1.dd: Likewise.
	* ld-tic6x/shlib-1b.dd: Likewise.
	* ld-tic6x/shlib-1rb.dd: Likewise.
	* ld-tic6x/shlib-app-1.dd: Likewise.
	* ld-tic6x/shlib-app-1b.dd: Likewise.
	* ld-tic6x/shlib-app-1r.dd: Likewise.
	* ld-tic6x/shlib-app-1rb.dd: Likewise.
	* ld-tic6x/shlib-noindex.dd: Likewise.
	* ld-vax-elf/export-class-data.dd: Likewise.
	* ld-vax-elf/plt-local-lib.dd: Likewise.
	* ld-vax-elf/plt-local.dd: Likewise.
	* ld-x86-64/bnd-ifunc-2.d: Likewise.
	* ld-x86-64/bnd-plt-1.d: Likewise.
	* ld-x86-64/gotpcrel1.dd: Likewise.
	* ld-x86-64/libno-plt-1b.dd: Likewise.
	* ld-x86-64/load1c-nacl.d: Likewise.
	* ld-x86-64/load1c.d: Likewise.
	* ld-x86-64/load1d-nacl.d: Likewise.
	* ld-x86-64/load1d.d: Likewise.
	* ld-x86-64/mov1a.d: Likewise.
	* ld-x86-64/mov1b.d: Likewise.
	* ld-x86-64/mov1c.d: Likewise.
	* ld-x86-64/mov1d.d: Likewise.
	* ld-x86-64/mov2a.d: Likewise.
	* ld-x86-64/mov2b.d: Likewise.
	* ld-x86-64/mov2c.d: Likewise.
	* ld-x86-64/mov2d.d: Likewise.
	* ld-x86-64/mpx3.dd: Likewise.
	* ld-x86-64/mpx4.dd: Likewise.
	* ld-x86-64/no-plt-1a.dd: Likewise.
	* ld-x86-64/no-plt-1b.dd: Likewise.
	* ld-x86-64/no-plt-1c.dd: Likewise.
	* ld-x86-64/no-plt-1e.dd: Likewise.
	* ld-x86-64/no-plt-1f.dd: Likewise.
	* ld-x86-64/no-plt-1g.dd: Likewise.
	* ld-x86-64/plt-main-bnd.dd: Likewise.
	* ld-x86-64/plt-nacl.pd: Likewise.
	* ld-x86-64/plt.pd: Likewise.
	* ld-x86-64/pr18591.d: Likewise.
	* ld-x86-64/pr19609-1c.d: Likewise.
	* ld-x86-64/pr19609-1e.d: Likewise.
	* ld-x86-64/pr19609-1j.d: Likewise.
	* ld-x86-64/pr19609-1l.d: Likewise.
	* ld-x86-64/pr19609-1m.d: Likewise.
	* ld-x86-64/pr19609-5b.d: Likewise.
	* ld-x86-64/pr19609-5c.d: Likewise.
	* ld-x86-64/pr19609-5e.d: Likewise.
	* ld-x86-64/pr19609-6b.d: Likewise.
	* ld-x86-64/pr19609-7b.d: Likewise.
	* ld-x86-64/pr19609-7d.d: Likewise.
	* ld-x86-64/pr19636-2d.d: Likewise.
	* ld-x86-64/pr20093-1.d: Likewise.
	* ld-x86-64/pr20093-2.d: Likewise.
	* ld-x86-64/pr20253-1b.d: Likewise.
	* ld-x86-64/pr20253-1d.d: Likewise.
	* ld-x86-64/pr20253-1f.d: Likewise.
	* ld-x86-64/pr20253-1h.d: Likewise.
	* ld-x86-64/pr20253-1j.d: Likewise.
	* ld-x86-64/pr20253-1l.d: Likewise.
	* ld-x86-64/protected3.d: Likewise.
	* ld-x86-64/tlsbin.dd: Likewise.
	* ld-x86-64/tlsbin2.dd: Likewise.
	* ld-x86-64/tlsbindesc.dd: Likewise.
	* ld-x86-64/tlsdesc-nacl.pd: Likewise.
	* ld-x86-64/tlsdesc.dd: Likewise.
	* ld-x86-64/tlsdesc.pd: Likewise.
	* ld-x86-64/tlsgd10.dd: Likewise.
	* ld-x86-64/tlsgd5.dd: Likewise.
	* ld-x86-64/tlsgd6.dd: Likewise.
	* ld-x86-64/tlsgd8.dd: Likewise.
	* ld-x86-64/tlsgdesc.dd: Likewise.
	* ld-x86-64/tlspic.dd: Likewise.
	* ld-x86-64/tlspic2.dd: Likewise.

2016-10-11  Nick Clifton  <nickc@redhat.com>

	PR ld/20535
	* emultempl/elf32.em (_search_needed): Add support for pseudo
	environment variables supported by ld.so.  Namely $ORIGIN, $LIB
	and $PLATFORM.
	* configure.ac: Add getauxval to list AC_CHECK_FUNCS list.
	* config.in: Regenerate.
	* configure: Regenerate.

2016-10-11  Alan Modra  <amodra@gmail.com>

	* ldlang.c (lang_do_assignments_1): Descend into output section
	statements that do not yet have bfd sections.  Set symbol section
	temporarily for symbols defined in such statements to the undefined
	section.  Don't error on data or reloc statements until final phase.
	* ldexp.c (exp_fold_tree_1 <etree_assign>): Handle bfd_und_section
	in expld.section.
	* testsuite/ld-mmix/bpo-10.d: Adjust.
	* testsuite/ld-mmix/bpo-11.d: Adjust.

2016-10-10  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* emulparams/elf64_s390.sh: Move binary start to 16M.
	* testsuite/ld-s390/tlsbin_64.dd: Adjust testcases accordingly.
	* testsuite/ld-s390/tlsbin_64.rd: Likewise.

2016-10-07  Alan Modra  <amodra@gmail.com>

	* ldexp.c (MAX): Define.
	(exp_unop, exp_binop, exp_trinop): Alloc at least enough for
	etree_type.value.

2016-10-07  Alan Modra  <amodra@gmail.com>

	* testsuite/lib/ld-lib.exp (is_generic_elf): New, extracted from..
	* testsuite/ld-elf/elf.exp: ..here.

2016-10-06  Ludovic Court?s  <ludo@gnu.org>

	* emulparams/elf32bmipn32-defs.sh: Shift quote of
	"x$EMULATION_NAME" to the left to work around
	<http://ftp.gnu.org/gnu/bash/bash-4.2-patches/bash42-007>.

2016-10-06  Alan Modra  <amodra@gmail.com>

	* lexsup.c: Spell fall through comments consistently and add
	missing fall through comments.

2016-10-06  Alan Modra  <amodra@gmail.com>

	* plugin.c (asymbol_from_plugin_symbol): Avoid compiler warning
	by adding return.

2016-10-04  Alan Modra  <amodra@gmail.com>

	* ld.texinfo (Expression Section): Update result of arithmetic
	expressions.
	* ldexp.c (arith_result_section): New function.
	(fold_binary): Use it.

2016-10-04  Alan Modra  <amodra@gmail.com>

	* ldexp.c (exp_value_fold): New function.
	(exp_unop, exp_binop, exp_trinop): Use it.

2016-09-30  Alan Modra  <amodra@gmail.com>

	* scripttempl/v850.sc: Don't reference __ctbp, __ep, __gp when
	not relocating.
	* scripttempl/v850_rh850.sc: Likewise.

2016-09-30  Alan Modra  <amodra@gmail.com>

	PR ld/20528
	* testsuite/ld-elf/pr20528a.d: xfail generic elf targets.  Allow
	multiple .text sections for hppa-linux.
	* testsuite/ld-elf/pr20528b.d: Likewise.

2016-09-30  Alan Modra  <amodra@gmail.com>

	* ldmain.c (default_bfd_error_handler): New function pointer.
	(ld_bfd_error_handler): New function.
	(main): Arrange to call it on bfd errors/warnings.
	(ld_bfd_assert_handler): Enable tail call.

2016-09-30  Alan Modra  <amodra@gmail.com>

	* ldlang.c (ignore_bfd_errors): Update params.

2016-09-29  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/20528
	* emultempl/elf32.em (gld${EMULATION_NAME}_place_orphan): Don't
	merge 2 sections with different SHF_EXCLUDE.
	* testsuite/ld-elf/pr20528a.d: New file.
	* testsuite/ld-elf/pr20528a.s: Likewise.
	* testsuite/ld-elf/pr20528b.d: Likewise.
	* testsuite/ld-elf/pr20528b.s: Likewise.

2016-09-28  Christophe Lyon  <christophe.lyon@linaro.org>

	PR ld/20608
	* testsuite/ld-arm/arm-elf.exp: Handle new testcase.
	* testsuite/ld-arm/farcall-mixed-app2.d: New file.
	* testsuite/ld-arm/farcall-mixed-app2.r: Likewise.
	* testsuite/ld-arm/farcall-mixed-app2.s: Likewise.
	* testsuite/ld-arm/farcall-mixed-app2.sym: Likewise.

2016-09-26  Vlad Zakharov  <vzakhar@synopsys.com>

	* Makefile.in: Regenerate.
	* configure: Likewise.

2016-09-26  Alan Modra  <amodra@gmail.com>

	* testsuite/ld-powerpc/attr-gnu-4-4.s: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-14.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-24.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-34.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-41.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-32.d: Adjust expected warning.
	* testsuite/ld-powerpc/attr-gnu-8-23.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-01.d: Adjust expected output.
	* testsuite/ld-powerpc/attr-gnu-4-02.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-03.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-10.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-11.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-20.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-22.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-33.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-8-11.d: Likewise.
	* testsuite/ld-powerpc/powerpc.exp: Don't run deleted tests.

2016-09-23  Akihiko Odaki  <akihiko.odaki.4i@stu.hosei.ac.jp>

	PR ld/20595
	* testsuite/ld-arm/unwind-4.d: Add -q option to linker command
	line and -r option to objdump command line.  Match emitted relocs
	to make sure that superflous relocs are not generated.

2016-09-23  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* emulparams/elf64_s390.sh: Change TEXT_START_ADDR to 256MB.
	* testsuite/ld-s390/tlsbin_64.dd: Adjust testcase accordingly.
	* testsuite/ld-s390/tlsbin_64.rd: Likewise.

2016-09-22  Nick Clifton  <nickc@redhat.com>

	* emultempl/elf32.em (_try_needed): In verbose mode, report failed
	attempts to find a needed library.

2016-09-21  Richard Sandiford  <richard.sandiford@arm.com>

	* testsuite/ld-aarch64/emit-relocs-28.d: Expect spaces after ","
	in addresses.
	* testsuite/ld-aarch64/emit-relocs-301-be.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-301.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-302-be.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-302.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-310-be.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-310.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-313.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-515-be.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-515.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-516-be.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-516.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-531.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-532.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-533.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-534.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-535.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-536.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-537.d: Likewise.
	* testsuite/ld-aarch64/emit-relocs-538.d: Likewise.
	* testsuite/ld-aarch64/erratum835769.d: Likewise.
	* testsuite/ld-aarch64/erratum843419.d: Likewise.
	* testsuite/ld-aarch64/farcall-b-plt.d: Likewise.
	* testsuite/ld-aarch64/farcall-bl-plt.d: Likewise.
	* testsuite/ld-aarch64/gc-plt-relocs.d: Likewise.
	* testsuite/ld-aarch64/ifunc-21.d: Likewise.
	* testsuite/ld-aarch64/ifunc-7c.d: Likewise.
	* testsuite/ld-aarch64/tls-desc-ie.d: Likewise.
	* testsuite/ld-aarch64/tls-large-desc-be.d: Likewise.
	* testsuite/ld-aarch64/tls-large-desc.d: Likewise.
	* testsuite/ld-aarch64/tls-large-ie-be.d: Likewise.
	* testsuite/ld-aarch64/tls-large-ie.d: Likewise.
	* testsuite/ld-aarch64/tls-relax-all.d: Likewise.
	* testsuite/ld-aarch64/tls-relax-gd-ie.d: Likewise.
	* testsuite/ld-aarch64/tls-relax-gdesc-ie-2.d: Likewise.
	* testsuite/ld-aarch64/tls-relax-gdesc-ie.d: Likewise.
	* testsuite/ld-aarch64/tls-relax-large-desc-ie-be.d: Likewise.
	* testsuite/ld-aarch64/tls-relax-large-desc-ie.d: Likewise.
	* testsuite/ld-aarch64/tls-tiny-desc.d: Likewise.
	* testsuite/ld-aarch64/tls-tiny-gd.d: Likewise.

gas	* gas/arm/tls.d: Adjust output to match change in objdump.
2016-10-11 13:50:10 +01:00
H.J. Lu
aec6b87e0b [x86] Resolve non-PIC undefweak symbols in executable
For i386 and x86-64, non-PIC references to undefined weak symbols are
resolved without dynamic relocation when creating executable.  Resolved
undefined weak symbols are removed from the dynamic symbol table in
executable.  One exception is on i386, we need resolved undefined weak
symbols in the dynamic symbol table in PIE if input relocatable files
contain branchs without PLT so that we can branch to 0 with dynamic
relocation in text section.

This makes behaviors of dynamic executable and position independent
executable predictable with mixed PIC and non-PIC references to undefined
weak symbols.  If all references to undefined weak symbols are PIC,
dynamic relocations against undefined weak symbols will be generated
in executable unless -z nodynamic-undefined-weak is passed to linker.

bfd/

	PR ld/19636
	PR ld/19704
	PR ld/19719
	* elf32-i386.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
	(elf_i386_link_hash_entry): Add has_got_reloc and
	has_non_got_reloc.
	(elf_i386_link_hash_table): Add interp.
	(elf_i386_link_hash_newfunc): Initialize has_got_reloc and
	has_non_got_reloc.
	(elf_i386_copy_indirect_symbol): Copy has_got_reloc and
	has_non_got_reloc.
	(elf_i386_check_relocs): Set has_got_reloc and has_non_got_reloc.
	(elf_i386_fixup_symbol): New function.
	(elf_i386_pie_finish_undefweak_symbol): Likewise.
	(elf_i386_allocate_dynrelocs): Don't allocate space for dynamic
	relocations and discard relocations against resolved undefined
	weak symbols in executable.  Don't make resolved undefined weak
	symbols in executable dynamic.  Keep dynamic non-GOT/non-PLT
	relocation against undefined weak symbols in PIE.
	(elf_i386_size_dynamic_sections): Set interp to .interp section.
	(elf_i386_relocate_section): Don't generate dynamic relocations
	against resolved undefined weak symbols in PIE, except for
	R_386_PC32.
	(elf_i386_finish_dynamic_symbol): Keep PLT/GOT entries without
	dynamic PLT/GOT relocations for resolved undefined weak symbols.
	Don't generate dynamic relocation against resolved undefined weak
	symbol in executable.
	(elf_i386_finish_dynamic_sections): Call
	elf_i386_pie_finish_undefweak_symbol on all symbols in PIE.
	(elf_backend_fixup_symbol): New.
	* elf64-x86-64.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
	(elf_x86_64_link_hash_entry): Add has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_link_hash_table): Add interp.
	(elf_x86_64_link_hash_newfunc): Initialize has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_copy_indirect_symbol): Copy has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_check_relocs): Set has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_fixup_symbol): New function.
	(elf_x86_64_pie_finish_undefweak_symbol): Likewise.
	(elf_x86_64_allocate_dynrelocs): Don't allocate space for dynamic
	relocations and discard relocations against resolved undefined
	weak symbols in executable.  Don't make resolved undefined weak
	symbols in executable dynamic.
	(elf_x86_64_size_dynamic_sections): Set interp to .interp section.
	(elf_x86_64_relocate_section): Check relocation overflow for
	dynamic relocations against unresolved weak undefined symbols.
	Don't generate dynamic relocations against resolved weak
	undefined symbols in PIE.
	(elf_x86_64_finish_dynamic_symbol): Keep PLT/GOT entries without
	dynamic PLT/GOT relocations for resolved undefined weak symbols.
	Don't generate dynamic relocation against resolved undefined weak
	symbol in executable.
	(elf_x86_64_finish_dynamic_sections): Call
	elf_x86_64_pie_finish_undefweak_symbol on all symbols in PIE.
	(elf_backend_fixup_symbol): New.

include/

	PR ld/19636
	PR ld/19704
	PR ld/19719
	* bfdlink.h (bfd_link_info): Add dynamic_undefined_weak.

ld/

	PR ld/19636
	PR ld/19704
	PR ld/19719
	* Makefile.am (ELF_X86_DEPS): Add dynamic_undefined_weak.sh.
	* Makefile.in: Regenerated.
	* NEWS: Mention -z nodynamic-undefined-weak.
	* ld.texinfo: Document -z nodynamic-undefined-weak.
	* ldmain.c (main): Initialize dynamic_undefined_weak to -1.
	* emulparams/dynamic_undefined_weak.sh: New file.
	* emulparams/elf32_x86_64.sh: Source dynamic_undefined_weak.sh.
	* emulparams/elf_i386.sh: Likewise.
	* emulparams/elf_i386_be.sh: Likewise.
	* emulparams/elf_i386_chaos.sh: Likewise.
	* emulparams/elf_i386_ldso.sh: Likewise.
	* emulparams/elf_i386_vxworks.sh: Likewise.
	* emulparams/elf_iamcu.sh: Likewise.
	* emulparams/elf_k1om.sh: Likewise.
	* emulparams/elf_l1om.sh: Likewise.
	* emulparams/elf_x86_64.sh: Likewise.
	* emulparams/extern_protected_data.sh (PARSE_AND_LIST_OPTIONS):
	Append.
	(PARSE_AND_LIST_ARGS_CASE_Z): Likewise.
	* testsuite/ld-elf/pr19719a.c: New file.
	* testsuite/ld-elf/pr19719b.c: Likewise.
	* testsuite/ld-elf/pr19719c.c: Likewise.
	* testsuite/ld-elf/pr19719d.c: Likewise.
	* testsuite/ld-i386/pr19636-1.s: Likewise.
	* testsuite/ld-i386/pr19636-1a.d: Likewise.
	* testsuite/ld-i386/pr19636-1b.d: Likewise.
	* testsuite/ld-i386/pr19636-1c.d: Likewise.
	* testsuite/ld-i386/pr19636-1d-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-1d.d: Likewise.
	* testsuite/ld-i386/pr19636-1e.d: Likewise.
	* testsuite/ld-i386/pr19636-1f.d: Likewise.
	* testsuite/ld-i386/pr19636-1g.d: Likewise.
	* testsuite/ld-i386/pr19636-1h.d: Likewise.
	* testsuite/ld-i386/pr19636-1i.d: Likewise.
	* testsuite/ld-i386/pr19636-2.s: Likewise.
	* testsuite/ld-i386/pr19636-2a.d: Likewise.
	* testsuite/ld-i386/pr19636-2b.d: Likewise.
	* testsuite/ld-i386/pr19636-2c-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-2c.d: Likewise.
	* testsuite/ld-i386/pr19636-2d-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-2d.d: Likewise.
	* testsuite/ld-i386/pr19636-2e-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-2e.d: Likewise.
	* testsuite/ld-i386/pr19636-3.s: Likewise.
	* testsuite/ld-i386/pr19636-3a.d: Likewise.
	* testsuite/ld-i386/pr19636-3b.d: Likewise.
	* testsuite/ld-i386/pr19636-3c.d: Likewise.
	* testsuite/ld-i386/pr19636-3d.d: Likewise.
	* testsuite/ld-i386/pr19636-3e.d: Likewise.
	* testsuite/ld-i386/pr19636-3f.d: Likewise.
	* testsuite/ld-i386/pr19636-3g.d: Likewise.
	* testsuite/ld-i386/pr19636-4.s: Likewise.
	* testsuite/ld-i386/pr19636-4a.d: Likewise.
	* testsuite/ld-i386/pr19636-4b.d: Likewise.
	* testsuite/ld-i386/pr19636-4c.d: Likewise.
	* testsuite/ld-i386/pr19636-4d.d: Likewise.
	* testsuite/ld-i386/pr19704.out: Likewise.
	* testsuite/ld-i386/pr19704a.c: Likewise.
	* testsuite/ld-i386/pr19704b.c: Likewise.
	* testsuite/ld-x86-64/pr19636-1.s: Likewise.
	* testsuite/ld-x86-64/pr19636-1a.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1b.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1c.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1d.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1e.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1f.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1g.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2.s: Likewise.
	* testsuite/ld-x86-64/pr19636-2a.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2b.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2c.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2d-nacl.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2d.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2e.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2f.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2g.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2h.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2i.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3.s: Likewise.
	* testsuite/ld-x86-64/pr19636-3a.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3b.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3c.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3d.d: Likewise.
	* testsuite/ld-x86-64/pr19704.out: Likewise.
	* testsuite/ld-x86-64/pr19704a.c: Likewise.
	* testsuite/ld-x86-64/pr19704b.c: Likewise.
	* testsuite/ld-elf/shared.exp (mix_pic_and_non_pic): New.
	Run mix_pic_and_non_pic.
	* testsuite/ld-i386/i386.exp (undefined_weak): New.
	Run undefined_weak and PR ld/19636 tests.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-x86-64/pr13082-3b.d: Updated.
	* testsuite/ld-x86-64/pr13082-4b.d: Likewise.
2016-02-26 04:55:57 -08:00