Commit Graph

8032 Commits

Author SHA1 Message Date
Alan Modra 32253bb796 Define __start/__stop symbols when there is only a dynamic def
This patch fixes a case where a user had a C-representable named
section in both the executable and shared libraries, and of course
wanted the size of the local section in the executable, not the
dynamic section.  It does mean that __start and __stop symbols don't
behave exactly like PROVIDEd symbols, but I think that's a reasonable
difference particularly since this is the way they used to behave.

	* elflink.c (bfd_elf_define_start_stop): Override symbols when
	they are defined dynamically.
2018-01-26 13:52:07 +10:30
Alan Modra ba21f56464 PowerPC64 .branch_lt size change leads to "stubs don't match calculated size"
https://bugzilla.redhat.com/show_bug.cgi?id=1523457

I haven't analyzed this myself, I'm relying on Nick's excellent
analysis.  What I believe is happening is that after some number of
stub sizing iterations, a long-branch stub needs to be converted to a
plt-branch, but either due to stub alignment or other stubs shrinking
in size, the stub group section size doesn't change.

That means we exit from ppc64_elf_size_stubs after sizing with an
incorrect layout, in fact the additional .branch_lt entry overlays
.got!  Since .TOC. is normally set to .got + 0x8000 the stub sizing
code decides that entry is within +/-32k of the TOC pointer and so a
three insn stub is sufficient.  When we come to build the stubs using
a correct non-overlaying layout, a four insn plt-branch stub is
generated and the stub group size doesn't match that calculated
earlier.

	* elf64-ppc.c (ppc64_elf_size_stubs): Iterate sizing when
	.branch_lt changes size.
2018-01-26 13:50:09 +10:30
Alan Modra 38e64b0ecc PR22746, crash when running 32-bit objdump on corrupted file
Avoid unsigned int overflow by performing bfd_size_type multiplication.

	PR 22746
	* elfcode.h (elf_object_p): Avoid integer overflow.
2018-01-25 22:05:10 +10:30
Eric Botcazou bb363086e7 Fix PR ld/22727 (TLS breakage in PIC/PIE mode on SPARC).
There are actually 2 different bugs:
 1. TLS transition is broken in PIE mode.
 2. TLS is broken in PIC/PIE mode when the __tls_get_addr symbol
    is versioned  (as is the case on Linux and Solaris at least).

The 1st bug is fixed by reverting the problematic change for now
(note that the associated test doesn't pass on SPARC because of another
issue so there is  no formal regression in the testsuite). The 2nd bug
is fixed by changing the  call to _bfd_generic_link_add_one_symbol
on __tls_get_addr into a mere lookup in _bfd_sparc_elf_check_relocs.

bfd/
	* elfxx-sparc.c (_bfd_sparc_elf_check_relocs) <R_SPARC_TLS_GD_CALL>:
	Do a mere lookup of the __tls_get_addr symbol instead of adding it.

	Revert
	2017-10-19  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/22263
	* elfxx-sparc.c (sparc_elf_tls_transition): Replace
	bfd_link_pic with !bfd_link_executable, !bfd_link_pic with
	bfd_link_executable for TLS check.
	(_bfd_sparc_elf_check_relocs): Likewise.
	(allocate_dynrelocs): Likewise.
	(_bfd_sparc_elf_relocate_section): Likewise.
ld/
	* testsuite/ld-sparc/sparc.exp (32-bit: Helper shared library):
	Link with a version script.
	(32-bit: TLS -fpie): New test.
	(64-bit: Helper shared library): Link with a version script.
	(64-bit: TLS -fpie): New test.
	(64-bit: GOTDATA relocations): Pass -Av9 to the assembler.
	* testsuite/ld-sparc/tlslib.ver: New file.
	* testsuite/ld-sparc/tlspie32.dd: Likewise.
	* testsuite/ld-sparc/tlspie32.s: Likewise.
	* testsuite/ld-sparc/tlspie64.dd: Likewise.
	* testsuite/ld-sparc/tlspie64.s: Likewise.
	* testsuite/ld-sparc/tlssunbin32.dd: Adjust for versioned symbol.
	* testsuite/ld-sparc/tlssunbin32.rd: Likewise.
	* testsuite/ld-sparc/tlssunbin32.sd: Likewise.
	* testsuite/ld-sparc/tlssunbin64.dd: Likewise.
	* testsuite/ld-sparc/tlssunbin64.rd: Likewise.
	* testsuite/ld-sparc/tlssunbin64.sd: Likewise.
2018-01-25 12:16:06 +01:00
Renlin Li 1daf502a16 [LD][AARCH64]Add group relocations to create PC-relative offset.
This is a patch to add linker support for group relocations to create a
16, 32, 48, or 64 bit PC-relative offset inline.

The following relocations are added along with the test cases:
BFD_RELOC_AARCH64_MOVW_PREL_G0, BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G1, BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G2, BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G3.

bfd/

2018-01-24  Renlin Li  <renlin.li@arm.com>

	* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Add support for
	BFD_RELOC_AARCH64_MOVW_PREL_G0, BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G1, BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G2, BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G3.
	* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Likewise.
	(_bfd_aarch64_elf_resolve_relocation): Likewise.

ld/

2018-01-24  Renlin Li  <renlin.li@arm.com>

	* testsuite/ld-aarch64/aarch64-elf.exp: Run new testes.
	* testsuite/ld-aarch64/emit-relocs-287.s: Fix test case.
	* testsuite/ld-aarch64/emit-relocs-287.d: Fix expected output.
	* testsuite/ld-aarch64/emit-relocs-287-overflow.s: New.
	* testsuite/ld-aarch64/emit-relocs-287-overflow.d: New.
	* testsuite/ld-aarch64/emit-relocs-288.d: New.
	* testsuite/ld-aarch64/emit-relocs-288.s: New.
	* testsuite/ld-aarch64/emit-relocs-289.d: New.
	* testsuite/ld-aarch64/emit-relocs-289.s: New.
	* testsuite/ld-aarch64/emit-relocs-289-overflow.s: New.
	* testsuite/ld-aarch64/emit-relocs-289-overflow.d: New.
	* testsuite/ld-aarch64/emit-relocs-290.d: New.
	* testsuite/ld-aarch64/emit-relocs-290.s: New.
	* testsuite/ld-aarch64/emit-relocs-291.d: New.
	* testsuite/ld-aarch64/emit-relocs-291.s: New.
	* testsuite/ld-aarch64/emit-relocs-291-overflow.s: New.
	* testsuite/ld-aarch64/emit-relocs-291-overflow.d: New.
	* testsuite/ld-aarch64/emit-relocs-292.d: New.
	* testsuite/ld-aarch64/emit-relocs-292.s: New.
	* testsuite/ld-aarch64/emit-relocs-293.d: New.
	* testsuite/ld-aarch64/emit-relocs-293.s: New.
2018-01-24 16:20:05 +00:00
Renlin Li 322474019d [GAS][AARCH64]Add group relocations to create PC-relative offset.
This is a patch to add the gas support for group relocations to create a
16, 32, 48, or 64 bit PC-relative offset inline.

The following relocations are added along with the test cases:
BFD_RELOC_AARCH64_MOVW_PREL_G0, BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G1, BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G2, BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G3.

bfd/

2018-01-24  Renlin Li  <renlin.li@arm.com>

	* reloc.c: Add BFD_RELOC_AARCH64_MOVW_PREL_G0,
	BFD_RELOC_AARCH64_MOVW_PREL_G0_NC, BFD_RELOC_AARCH64_MOVW_PREL_G1,
	BFD_RELOC_AARCH64_MOVW_PREL_G1_NC, BFD_RELOC_AARCH64_MOVW_PREL_G2,
	BFD_RELOC_AARCH64_MOVW_PREL_G2_NC, BFD_RELOC_AARCH64_MOVW_PREL_G3.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Regenerate.
	* elfnn-aarch64.c (elfNN_aarch64_howto_table): Add entries for
	BFD_RELOC_AARCH64_MOVW_PREL_G0, BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G1, BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G2, BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G3.

gas/

2018-01-24  Renlin Li  <renlin.li@arm.com>

	* config/tc-aarch64.c (reloc_table): add entries for
	BFD_RELOC_AARCH64_MOVW_PREL_G0, BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G1, BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G2, BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
	BFD_RELOC_AARCH64_MOVW_PREL_G3.
	(process_movw_reloc_info): Supports newly added MOVW_PREL relocations.
	(md_apply_fix): Likewise
	* testsuite/gas/aarch64/prel_g0.s: New.
	* testsuite/gas/aarch64/prel_g0.d: New.
	* testsuite/gas/aarch64/prel_g0_nc.s: New.
	* testsuite/gas/aarch64/prel_g0_nc.d: New.
	* testsuite/gas/aarch64/prel_g1.s: New.
	* testsuite/gas/aarch64/prel_g1.d: New.
	* testsuite/gas/aarch64/prel_g1_nc.s: New.
	* testsuite/gas/aarch64/prel_g1_nc.d: New.
	* testsuite/gas/aarch64/prel_g2.s: New.
	* testsuite/gas/aarch64/prel_g2.d: New.
	* testsuite/gas/aarch64/prel_g2_nc.s: New.
	* testsuite/gas/aarch64/prel_g2_nc.d: New.
	* testsuite/gas/aarch64/prel_g3.s: New.
	* testsuite/gas/aarch64/prel_g3.d: New.
2018-01-24 16:19:47 +00:00
Maciej W. Rozycki 1c5e4ee9ab MIPS/BFD: Update a stale `mips_elf32_section_processing' reference
Update a stale reference to `mips_elf32_section_processing', following a
merge of the function into `_bfd_mips_elf_section_processing' made with
commit 103186c62b ("PATCH for MIPS 64-bit ABI suport"),
<https://sourceware.org/ml/binutils/1999-q3/msg00072.html>.

	bfd/
	* elfxx-mips.c (_bfd_mips_elf_final_link): Update a stale
	`mips_elf32_section_processing' comment reference.
2018-01-23 19:01:34 +00:00
H.J. Lu 8a1b824af7 x86: Check the versioned __tls_get_addr symbol
We need to check the versioned __tls_get_addr symbol when looking up
"__tls_get_addr".

bfd/

	PR ld/22721
	* elfxx-x86.c (_bfd_x86_elf_link_check_relocs): Check the
	versioned __tls_get_addr symbol.

ld/

	PR ld/22721
	* testsuite/ld-plugin/lto.exp: Run PR ld/22721 tests.
	* testsuite/ld-plugin/pr22721.t: New file.
	* testsuite/ld-plugin/pr22721a.s: Likewise.
	* testsuite/ld-plugin/pr22721b.c: Likewise.
2018-01-20 14:29:36 -08:00
Nick Clifton ee3fbc1ebb Update French translation in bfd sub-directory 2018-01-19 10:50:06 +00:00
Alan Modra 691d2e9af2 PowerPC PLT stub alignment fixes
Asking for ppc32 plt call stubs to be aligned at 32 byte boundaries
didn't quite work.  For ld.bfd they were spaced 32 bytes apart, but
only started on a 16 byte boundary.  ld.gold also didn't get it right.

Finding that bug made me check over the ppc64 plt stub alignment,
where I found that negative values for alignment (meaning align to
minimize boundary crossing) were not accepted.  Since no one has
complained about that, I guess I could have removed the feature from
ld.bfd documentation, but I've opted instead to correct the code.

I've also added an optional alignment paramenter for ppc32
--plt-align, for some consistency with gold and ppc64 ld.bfd.

bfd/
	* elf32-ppc.c (ppc_elf_create_glink): Correct alignment of .glink.
	* elf64-ppc.c (ppc64_elf_size_stubs): Handle negative plt_stub_align.
	(ppc64_elf_build_stubs): Likewise.
gold/
	* powerpc.cc (param_plt_align): New function supplying default
	--plt-align values.  Use it..
	(Stub_table::plt_call_align): ..here, and..
	(Output_data_glink::global_entry_align): ..here.
	(Stub_table::stub_align): Correct 32-bit minimum alignment.
ld/
	* emultempl/ppc32elf.em: Support optional --plt-align arg.
	* emultempl/ppc64elf.em: Support negative --plt-align arg.
2018-01-18 22:25:21 +10:30
Nick Clifton 4bfce12836 Update Ukranian and Russian translations in bfd library 2018-01-17 15:52:37 +00:00
Alan Modra c75bc4f76f Warning fix
* elf64-ppc.c (ppc64_elf_build_stubs): Silence gcc warning.
2018-01-17 21:25:15 +10:30
Alan Modra 1be5d8d3bb PowerPC PLT speculative execution barriers
Spectre variant 2 mitigation for PowerPC and PowerPC64.

bfd/
	* elf32-ppc.c (GLINK_ENTRY_SIZE): Handle speculation barrier.
	(CRSETEQ, BEQCTRM): Define.
	(is_nonpic_glink_stub): Don't check bctr.
	(ppc_elf_link_hash_table_create): Init new ppc_elf_params field.
	(ppc_elf_relax_section): Size speculation barrier.
	(output_bctr): New function.
	(write_glink_stub): Use output_bctr.
	(ppc_elf_relocate_section): Use output_bctr for long branch stub.
	(ppc_elf_finish_dynamic_symbol): Likewise.
	(ppc_elf_finish_dynamic_sections): Use output_bctr.
	* elf32-ppc.h (struct ppc_elf_params): Add speculate_indirect_jumps.
	* elf64-ppc.c (CRSETEQ, BEQCTRM, BEQCTRLM): Define.
	(GLINK_PLTRESOLVE_SIZE): Size speculation barrier.
	(size_global_entry_stubs): Handle speculation barrier sizing.
	(plt_stub_size): Likewise.
	(output_bctr): New function.
	(build_plt_stub, build_tls_get_addr_stub): Output speculation
	barrier.
	(ppc_build_one_stub): Likewise for ppc_stub_plt_branch.
	(ppc_size_one_stub): Size speculation barrier in ppc_stub_plt_branch.
	(build_global_entry_stubs): Output speculation barrier.
	(ppc64_elf_build_stubs): Likewise in __glink_PLTresolve stub.
	* elf64-ppc.h (struct ppc64_elf_params): Add speculate_indirect_jumps.
gold/
	* options.h (speculate_indirect_jumps): New option.
	* powerpc.cc (beqctrm, beqctrlm, crseteq): New insn constants.
	(output_bctr): New function.
	(Stub_table::plt_call_size): Add space for speculation barrier.
	(Stub_table::branch_stub_size): Likewise.
	(Output_data_glink::pltresolve_size): Likewise.
	(Stub_table::do_write): Output speculation barriers.
ld/
	* emultempl/ppc32elf.em (params): Init new field.
	(OPTION_SPECULATE_INDIRECT_JUMPS): Define.
	(OPTION_NO_SPECULATE_INDIRECT_JUMPS): Define.
	(PARSE_AND_LIST_LONGOPTS): Handle new options.
	(PARSE_AND_LIST_ARGS_CASES): Likewise.
	(PARSE_AND_LIST_OPTIONS): Likewise.
	* emultempl/ppc64elf.em (params): Init new field.
	(OPTION_SPECULATE_INDIRECT_JUMPS): Define.
	(OPTION_NO_SPECULATE_INDIRECT_JUMPS): Define.
	(PARSE_AND_LIST_LONGOPTS): Handle --speculate-indirect-jumps.
	(PARSE_AND_LIST_OPTIONS): Likewise.
	(PARSE_AND_LIST_ARGS_CASES): Likewise.
	* ld.texinfo (--no-plt-thread-safe): Correct itemx.
	(--speculate-indirect-jumps): Document.
	* testsuite/ld-powerpc/elfv2exe.d,
	* testsuite/ld-powerpc/elfv2so.d,
	* testsuite/ld-powerpc/relbrlt.d,
	* testsuite/ld-powerpc/powerpc.exp: Disable plt alignment and
	speculation barriers on various tests.
2018-01-17 18:52:57 +10:30
Alan Modra 9e390558ce PowerPC PLT stub tidy
This is in preparation for the next patch adding Spectre variant 2
mitigation for PowerPC and PowerPC64.  Besides tidying code involved
in stub output (to reduce the number of places where bctr is output),
the patch adds some user visible features:

1) PowerPC64 ELFv2 global entry stubs now are aligned under the
   control of --plt-align, with a default alignment of 32 bytes.
2) PowerPC64 __glink_PLTresolve is no longer padded out with nops.
3) PowerPC32 PLT stubs are aligned under the control of --plt-align,
   with the default alignment being 16 bytes as before.
4) The PowerPC32 branch/nop table emitted before __glink_PLTresolve
   is now smaller in many cases.  It was sized incorrectly when the
   __tls_get_addr_opt stub was used, and unnecessarily included space
   for local ifuncs.

bfd/
	* elf32-ppc.c (GLINK_ENTRY_SIZE): Add parameters, handle
	__tls_get_addr_opt, and alignment sizing.
	(TLS_GET_ADDR_GLINK_SIZE): Delete.
	(is_nonpic_glink_stub): Don't use GLINK_ENTRY_SIZE.
	(ppc_elf_get_synthetic_symtab): Recognize stubs spaced at 4, 6,
	or 8 insns.
	(ppc_elf_link_hash_table_create): Init new ppc_elf_params field.
	(allocate_dynrelocs): Use new GLINK_ENTRY_SIZE.
	(ppc_elf_size_dynamic_sections): Likewise.  Size branch table
	by PLT reloc count.
	(write_glink_stub): Handle __tls_get_addr_opt stub.
	Pad out to size given by GLINK_ENTRY_SIZE.
	(ppc_elf_relocate_section): Adjust write_glink_stub call.
	(ppc_elf_finish_dynamic_symbol): Likewise.
	(ppc_elf_finish_dynamic_sections): Write PLTresolve without using
	insn array since so many need rewriting.
	* elf32-ppc.h (struct ppc_elf_params): Add plt_stub_align.
	* elf64-ppc.c (GLINK_PLTRESOLVE_SIZE): Rename from
	GLINK_CALL_STUB_SIZE.  Add htab param and evaluate to size without
	nops.  Adjust all uses.
	(ppc64_elf_get_synthetic_symtab): Don't use GLINK_CALL_STUB_SIZE
	in glink_vma calculation.
	(struct ppc_link_hash_table): Add global_entry section pointer.
	(create_linkage_sections): Create separate section for global
	entry stubs.
	(PPC_LO, PPC_HI, PPC_HA): Move earlier.
	(size_global_entry_stubs): Handle sizing for aligned stubs.
	(ppc64_elf_size_dynamic_sections): Handle global_entry alloc,
	and don't stash end of glink branch table in rawsize.
	(ppc_build_one_stub): Rewrite stub size calculations.
	(build_global_entry_stubs): Use new section.
	(ppc64_elf_build_stubs): Don't pad __glink_PLTresolve with nops.
	Build lazy link stubs out to end of section.  Build global entry
	stubs in new section.
gold/
	* options.h (plt_align): Support for PowerPC32 too.
	* powerpc.cc (Stub_table::stub_align): Heed --plt-align for 32-bit.
	(Stub_table::plt_call_size, branch_stub_size): Tidy.
	(Stub_table::plt_call_align): Implement using stub_align.
	(Output_data_glink::global_entry_align): New function.
	(Output_data_glink::global_entry_off): New function.
	(Output_data_glink::global_entry_address): Use global_entry_off.
	(Output_data_glink::pltresolve_size): New function, replacing
	pltresolve_size_ constant.  Update all uses.
	(Output_data_glink::add_global_entry): Align offset.
	(Output_data_glink::set_final_data_size): Use global_entry_align.
	(Stub_table::do_write): Don't pad __glink_PLTrelsolve with nops.
	Tidy stub output.  Use global_entry_off.
ld/
	* emultempl/ppc32elf.em (params): Init new field.
	(enum ppc32_opt): New enum to define OPTION_* values.  Add
	OPTION_PLT_ALIGN and OPTION_NO_PLT_ALIGN.
	(PARSE_AND_LIST_LONGOPTS): Handle new options.
	(PARSE_AND_LIST_ARGS_CASES): Likewise.
	(PARSE_AND_LIST_OPTIONS): Likewise.  Break up help output.
	* emultempl/ppc64elf.em (ppc_add_stub_section): Init alignment
	correctly for negative --plt-stub-align.
	* testsuite/ld-powerpc/elfv2exe.d,
	* testsuite/ld-powerpc/elfv2so.d,
	* testsuite/ld-powerpc/relbrlt.d,
	* testsuite/ld-powerpc/relbrlt.s,
	* testsuite/ld-powerpc/tlsexe.d,
	* testsuite/ld-powerpc/tlsexe.r,
	* testsuite/ld-powerpc/tlsexe32.d,
	* testsuite/ld-powerpc/tlsexe32.g,
	* testsuite/ld-powerpc/tlsexe32.r,
	* testsuite/ld-powerpc/tlsexetoc.d,
	* testsuite/ld-powerpc/tlsexetoc.r,
	* testsuite/ld-powerpc/tlsopt5_32.d,
	* testsuite/ld-powerpc/tlsso.d,
	* testsuite/ld-powerpc/tlstocso.d: Update for changed stub order.
2018-01-17 18:51:04 +10:30
Nick Clifton 616dcb87ab Update Ukranian translations for bfd, binutils, gas, gold, ld and opcodes 2018-01-15 12:09:11 +00:00
Nick Clifton 3957a4963f Update pot files 2018-01-13 13:56:48 +00:00
Nick Clifton 769c7ea507 Bump version number to 2.30.51
bfd/
	* version.m4: Bump version to 2.30.51
	* configure: Regenerate.

binutils/
	* configure: Regenerate.

gas/
	* configure: Regenerate.

gprof/
	* configure: Regenerate.

ld/
	* configure: Regenerate.

opcodes/
	* configure: Regenerate.
2018-01-13 13:31:12 +00:00
Nick Clifton faf766e317 Add note about 2.30 branch creation to changelogs 2018-01-13 13:26:38 +00:00
Jens Widell 564e11c9a9 Optimize the performance of the group_setup function.
When processing a section that is a member of a group, the group
that contains it is looked up using a linear search. The resulting
O(n^2) complexity causes significant performance issues when
dealing with object files with very many groups.

By remembering the index of the last found group and restarting
the next search from that index, the search instead becomes O(n)
in common cases.

	* elf.c (setup_group): Optimize search for group by remembering
	last found group and restarting search at that index.
	* elf-bfd.h (struct elf_obj_tdata): Add group_search_offset field.
2018-01-12 13:16:17 +00:00
Alan Modra a78eea1623 Fix override of common symbols for a.out
The default should be bfd_link_common_skip_none, as in the original
patch at https://sourceware.org/ml/binutils/2002-07/msg00717.html

	* aoutx.h (aout_link_check_ar_symbols): Remove default and handle
	bfd_link_common_skip_none in switch.
2018-01-12 21:13:11 +10:30
Alan Modra 87e79a6515 Fixes for "Ignore dynamic references on forced local symbols"
PowerPC64 has its own mark_dynamic_ref, which needs the same change as
made by d664fd41e1 to the generic ELF version.  Some other targets
discard more than just .data, so allow for that too in expected ld
messages.

bfd/
	PR ld/22649
	* elf64-ppc.c (ppc64_elf_gc_mark_dynamic_ref): Ignore dynamic
	references on forced local symbols.
ld/
	PR ld/22649
	* testsuite/ld-elf/pr22649.msg: Allow other messages.
	* testsuite/ld-elf/shared.exp: Check that --gc-sections is
	supported before running ld/22649 tests.
2018-01-12 21:13:11 +10:30
Vlad Ivanov 58807c48a5 _bfd_mips_elf_final_link: Notify user about wrong .reginfo size
One of assertions in _bfd_mips_elf_final_link could be triggered by
a combination of input files and a linker script.  This happens when
either the input doesn't contain .reginfo section or when this section
is oversized.  This patch replaces the assertion with a more useful
error message.

	* elfxx-mips.c (_bfd_mips_elf_final_link): Notify user when
	.reginfo section has wrong size.
2018-01-12 09:25:11 +00:00
H.J. Lu 2888249fc9 ld: Create a new LOAD segment for separate code segment
When generating separate code LOAD segment, create a new LOAD segment
if the previous section contains text and the current section doesn't
or vice versa:

Elf file type is DYN (Shared object file)
Entry point 0x200020
There are 7 program headers, starting at offset 52

Program Headers:
  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
  LOAD           0x000000 0x00000000 0x00000000 0x00200 0x00200 R   0x200000
  LOAD           0x200000 0x00200000 0x00200000 0x00036 0x00036 R E 0x200000
  LOAD           0x400000 0x00400000 0x00400000 0x00064 0x00064 R   0x200000
  LOAD           0x400f80 0x00600f80 0x00600f80 0x000a0 0x000a0 RW  0x200000
  DYNAMIC        0x400f80 0x00600f80 0x00600f80 0x00080 0x00080 RW  0x4
  GNU_STACK      0x000000 0x00000000 0x00000000 0x00000 0x00000 RW  0x10
  GNU_RELRO      0x400f80 0x00600f80 0x00600f80 0x00080 0x00080 R   0x1

 Section to Segment mapping:
  Segment Sections...
   00     .hash .gnu.hash .dynsym .dynstr .rela.plt
   01     .plt .text
   02     .rodata .eh_frame
   03     .dynamic .got.plt
   04     .dynamic
   05
   06     .dynamic

to prevent fetching or executing data in code pages as instructions.

Also don't put a writable section in a read-only segment if there is a
RELRO segment.

Since code segment is aligned and padded to the maximum page size on
disk, the minimum file size is bigger than the maximum page size which
is 2MB (0x200000):

-rwxr-xr-x 1 hjl hjl 4201932 Jan 10 10:41 libfoo.so

"-z max-page-size=0x1000" can be used to reduce the maximum page size to
4KB (0x1000):

-rwxr-xr-x 1 hjl hjl   15820 Jan 10 10:44 libfoo.so

	PR ld/22393
	* elf.c (_bfd_elf_map_sections_to_segments): When generating
	separate code and read-only data LOAD segments, create a new
	LOAD segment if the previous section contains text and the
	current section doesn't or vice versa.  Don't put a writable
	section in a read-only segment if there is a RELRO segment.
2018-01-11 19:05:06 -08:00
H.J. Lu d664fd41e1 Ignore dynamic references on forced local symbols
We should ignore dynamic references on forced local symbols during
garbage collection since they can never be referenced dynamically.

bfd/

	PR ld/22649
	* elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Ignore dynamic
	references on forced local symbols.

ld/

	PR ld/22649
	* testsuite/ld-elf/pr22649-1.s: New file.
	* testsuite/ld-elf/pr22649-2a.s: Likewise.
	* testsuite/ld-elf/pr22649-2b.s: Likewise.
	* testsuite/ld-elf/pr22649.msg: Likewise.
	* testsuite/ld-elf/shared.exp: Run ld/22649 tests.
2018-01-11 15:36:54 -08:00
H.J. Lu 8b6f4cd34f ld: Keep PREINIT_ARRAY/INIT_ARRAY/FINI_ARRAY sections for -r --gc-sections
We must keep all PREINIT_ARRAY, INIT_ARRAY as well as FINI_ARRAY sections
for ld -r --gc-sections.

bfd/

	PR ld/22677
	* elflink.c (bfd_elf_gc_sections): Keep all PREINIT_ARRAY,
	INIT_ARRAY as well as FINI_ARRAY sections for ld -r --gc-sections.

ld/

	PR ld/22677
	* scripttempl/elf.sc (PREINIT_ARRAY): New.
	Don't add .preinit_array for ld -r.
	* testsuite/ld-elf/pr22677.d: New file.
	* testsuite/ld-elf/pr22677.s: Likewise.
2018-01-11 09:42:12 -08:00
Kuan-Lin Chen 6cef73f96f PR22662, nds32: Fix a typographical error. 2018-01-09 16:05:33 +08:00
John Baldwin ddb2bbcf06 Create pseudo sections for FreeBSD NT_PROCSTAT_(PROC|FILES|VMMAP) notes.
bfd/ChangeLog:

	* elf.c (elfcore_grok_freebsd_note): Handle
	NT_FREEBSD_PROCSTAT_PROC, NT_FREEBSD_PROCSTAT_FILES, and
	NT_FREEBSD_PROCSTAT_VMMAP.
2018-01-03 12:06:53 -08:00
Alan Modra 219d1afa89 Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
Alan Modra 1e56386871 ChangeLog rotation 2018-01-03 17:49:42 +10:30
Alan Modra 63f452a8bf PR22626, invalid dynindx used for dynamic relocs against section syms
_bfd_elf_link_renumber_dynsyms is called twice by the linker.  The
first call in bfd_elf_size_dynamic_sections is just to answer the
question as to whether there are there any dynamic symbols.  The
second call in bfd_elf_size_dynsym_hash_dynstr sets the st_shndx value
that dynamic symbols will have.  strip_excluded_output_sections is
called between these two calls.  So sections seen on the first
_bfd_elf_link_renumber_dynsyms pass might differ from those seen on
the second pass.  Unfortunately, that can result in a stripped
section's dynamic symbol being assigned a dynindx on the first pass
but not corrected to the final value (of zero, ie. not dynamic) on the
second pass.  PowerPC, x86, mips, and most other targets that emit
dynamic section symbols, just test that section symbol dynindx is
non-zero before using a given section symbol in dynamic relocations.

This patch prevents _bfd_elf_link_renumber_dynsyms from setting any
section symbol dynindx on the first pass.

	PR 22626
	* elflink.c (_bfd_elf_link_renumber_dynsyms): Don't set section
	dynindx when section_sym_count is NULL.
	(bfd_elf_size_dynamic_sections): Pass NULL section_sym_count to
	preliminary _bfd_elf_link_renumber_dynsyms call.
2017-12-19 06:53:22 +10:30
Nick Clifton fc076a47fd Update documentation regarding the bfd returned by bfd_openr_next_archived_file
PR 22571
	* archive.c (bfd_openr_next_archived_file): Extend the
	documentation to note that it is necessary to call
	bfd_check_format on the rrturned bfd before using it.
2017-12-15 18:55:39 +00:00
Nick Clifton 863f7a5f48 Update the address of the FSF in the copyright notice of files which were using the old address.
top	* COPYING.LIBGLOSS: Update address of FSF in copyright notice.

bfd	* cpu-mt.c: Update address of FSF in copyright notice.
	* elf32-m32c.c: Likewise.
	* elf32-mt.c: Likewise.
	* elf32-rl78.c: Likewise.
	* elf32-rx.c: Likewise.
	* elf32-rx.h: Likewise.
	* elf32-spu.h: Likewise.
	* hosts/x86-64linux.h: Likewise.

etc	* add-log.el: Update address of FSF in copyright notice.

gas	* config/tc-m32c.c: Update address of FSF in copyright notice.
	* config/tc-m32c.h: Likewise.
	* config/tc-mt.c: Likewise.
	* config/tc-mt.h: Likewise.
	* config/tc-visium.c: Likewise.
	* config/tc-visium.h: Likewise.
	* testsuite/gas/rx/explode: Likewise.

ld	* testsuite/ld-mn10300/mn10300.exp: Update address of FSF in
	copyright notice.
2017-12-14 12:48:55 +00:00
Renlin Li 79e7419204 [BFD][AARCH64]Disallow R_AARCH64_ABS32(LP64) & R_AARCH64_ABS16 in const section of shared object.
R_AARCH64_ABS64, R_AARCH64_ABS32 and R_AARCH64_ABS16 are data relocations
supported in AArch64 elf ABI.

R_AARCH64_ABS64 under LP64 is allowed in shared object and a dynamic relocation entry
will be generated. This allows the dynamic linker to do further symbol resolution.
R_AARCH64_ABS32 likewise is allowed in shared object, however under ILP32 abi.

The original behavior for R_AARCH64_ABS32 under LP64 is that, it's allowed
in shared object and silently resolved at static linking time.
No dynamic relocation entry is generate for it.

R_AARCH64_ABS16 is allowed in shared object under both L64 and ILP32.
It's resolved at static linking time as well.

Under LP64, the address should be 64-bit. R_AARCH64_ABS32 relocation indicates
an address that is only sized 32 bits which is meaningless in LP64 shared object.
It's useful to error out.

I have checked glibc dynamic linker code, R_AARCH64_ABS16 is not supported at all. So
R_AARCH64_ABS16 should be reject in shared object completely.

In this patch, R_AARCH64_ABS32 is rejected under LP64 in constant section of shared object.
R_AARCH64_ABS16 is rejected in constant section of shared object in both ABI.

This will sometimes provide useful information for buggy code.
2017-12-13 15:15:50 +00:00
Sangamesh Mallayya 57a2957f2e Typo fix
Entirely the fault of that Alan Modra bloke.

	* bfd.c (bfd_get_sign_extend_vma): Correct typo.
2017-12-11 08:20:52 +10:30
Alan Modra a9d44aad42 Work around sparc glibc bug
* elfxx-sparc.c (_bfd_sparc_elf_relocate_section): When emitting
	dynamic R_SPARC_RELATIVE for GOT entries, ensure the section
	contents are zeroed.
2017-12-09 08:06:08 +10:30
Nick Clifton 2d054e6bfd Fix stripping relocs in a file with mergeable notes.
A recent Fedora bug (1520805) exposed a problem with objcopy's reloc
  copying code, when a binary also contains mergeable notes.  The note
  merging code would delete some relocs, but then the reloc copying code
  would try to put them back again, which did not work.

  So I am checking in the patch below to fix the problem.  The patch
  also tweaks one of the binutils note merging tests so that it is
  skipped for the Sparc64 target, since this has funky relocs.

binutils	* objcopy.c (copy_relocations_in_section): Use the orelocations
	field of the input section, if it has been initialised.
	* testsuite/binutils-all/note-2-64.d: Skip test on Sparc64.

bfd	* elfcode.h (elf_write_relocs): Check for an empty howto field.
2017-12-08 10:07:14 +00:00
Sangamesh Mallayya c8bed57010 Add aix 64-bit check to bfd_get_sign_extend_vma
* bfd.c (bfd_get_sign_extend_vma): Handle aix5coff64-rs6000.
2017-12-08 16:56:04 +10:30
Alan Modra 07d6d2b834 BFD whitespace fixes
Binutils is supposed to use tabs.  In my git config I have
whitespace = indent-with-non-tab,space-before-tab,trailing-space
and I got annoyed enough seeing red in "git diff" output to fix
the problems.

	* doc/header.sed: Trim trailing space when splitting lines.
	* aix386-core.c, * aout-adobe.c, * aout-arm.c, * aout-cris.c,
	* aout-ns32k.c, * aout-target.h, * aout-tic30.c, * aoutf1.h, * aoutx.h,
	* arc-got.h, * arc-plt.def, * arc-plt.h, * archive.c, * archive64.c,
	* archures.c, * armnetbsd.c, * bfd-in.h, * bfd.c, * bfdio.c, * binary.c,
	* bout.c, * cache.c, * cisco-core.c, * coff-alpha.c, * coff-apollo.c,
	* coff-arm.c, * coff-h8300.c, * coff-i386.c, * coff-i860.c,
	* coff-i960.c, * coff-m68k.c, * coff-m88k.c, * coff-mcore.c,
	* coff-mips.c, * coff-ppc.c, * coff-rs6000.c, * coff-sh.c,
	* coff-stgo32.c, * coff-tic4x.c, * coff-tic54x.c, * coff-tic80.c,
	* coff-we32k.c, * coff-x86_64.c, * coff-z80.c, * coff-z8k.c,
	* coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c,
	* coffswap.h, * compress.c, * corefile.c, * cpu-alpha.c, * cpu-arm.c,
	* cpu-avr.c, * cpu-bfin.c, * cpu-cr16.c, * cpu-cr16c.c, * cpu-crx.c,
	* cpu-d10v.c, * cpu-frv.c, * cpu-ft32.c, * cpu-i370.c, * cpu-i960.c,
	* cpu-ia64-opc.c, * cpu-ip2k.c, * cpu-lm32.c, * cpu-m32r.c,
	* cpu-mcore.c, * cpu-microblaze.c, * cpu-mips.c, * cpu-moxie.c,
	* cpu-mt.c, * cpu-nios2.c, * cpu-ns32k.c, * cpu-or1k.c, * cpu-powerpc.c,
	* cpu-pru.c, * cpu-sh.c, * cpu-spu.c, * cpu-v850.c, * cpu-v850_rh850.c,
	* cpu-xgate.c, * cpu-z80.c, * dwarf1.c, * dwarf2.c, * ecoff.c,
	* ecofflink.c, * ecoffswap.h, * elf-bfd.h, * elf-eh-frame.c,
	* elf-hppa.h, * elf-m10200.c, * elf-m10300.c, * elf-s390-common.c,
	* elf-strtab.c, * elf-vxworks.c, * elf.c, * elf32-am33lin.c,
	* elf32-arc.c, * elf32-arm.c, * elf32-avr.c, * elf32-avr.h,
	* elf32-bfin.c, * elf32-cr16.c, * elf32-cr16c.c, * elf32-cris.c,
	* elf32-crx.c, * elf32-d10v.c, * elf32-d30v.c, * elf32-dlx.c,
	* elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c, * elf32-ft32.c,
	* elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c, * elf32-i860.c,
	* elf32-i960.c, * elf32-ip2k.c, * elf32-lm32.c, * elf32-m32c.c,
	* elf32-m32r.c, * elf32-m68hc11.c, * elf32-m68hc12.c, * elf32-m68hc1x.c,
	* elf32-m68hc1x.h, * elf32-m68k.c, * elf32-m88k.c, * elf32-mcore.c,
	* elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c, * elf32-mips.c,
	* elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c,
	* elf32-nds32.h, * elf32-nios2.c, * elf32-or1k.c, * elf32-pj.c,
	* elf32-ppc.c, * elf32-ppc.h, * elf32-pru.c, * elf32-rl78.c,
	* elf32-rx.c, * elf32-s390.c, * elf32-score.c, * elf32-score.h,
	* elf32-score7.c, * elf32-sh-symbian.c, * elf32-sh.c, * elf32-sh64.c,
	* elf32-sparc.c, * elf32-spu.c, * elf32-tic6x.c, * elf32-tilegx.c,
	* elf32-tilegx.h, * elf32-tilepro.c, * elf32-tilepro.h, * elf32-v850.c,
	* elf32-vax.c, * elf32-wasm32.c, * elf32-xc16x.c, * elf32-xgate.c,
	* elf32-xgate.h, * elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c,
	* elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mips.c, * elf64-mmix.c,
	* elf64-ppc.c, * elf64-s390.c, * elf64-sh64.c, * elf64-sparc.c,
	* elf64-tilegx.c, * elf64-tilegx.h, * elf64-x86-64.c, * elfcore.h,
	* elflink.c, * elfn32-mips.c, * elfnn-aarch64.c, * elfnn-ia64.c,
	* elfnn-riscv.c, * elfxx-aarch64.c, * elfxx-aarch64.h, * elfxx-ia64.c,
	* elfxx-ia64.h, * elfxx-mips.c, * elfxx-riscv.c, * elfxx-sparc.c,
	* elfxx-tilegx.c, * elfxx-x86.c, * elfxx-x86.h, * freebsd.h, * hash.c,
	* host-aout.c, * hp300hpux.c, * hppabsd-core.c, * hpux-core.c,
	* i386aout.c, * i386linux.c, * i386lynx.c, * i386mach3.c, * i386msdos.c,
	* i386netbsd.c, * ieee.c, * ihex.c, * irix-core.c, * libaout.h,
	* libbfd-in.h, * libbfd.c, * libcoff-in.h, * libnlm.h, * libpei.h,
	* libxcoff.h, * linker.c, * lynx-core.c, * m68k4knetbsd.c,
	* m68klinux.c, * m68knetbsd.c, * m88kmach3.c, * mach-o-aarch64.c,
	* mach-o-arm.c, * mach-o-i386.c, * mach-o-target.c, * mach-o-x86-64.c,
	* mach-o.c, * mach-o.h, * merge.c, * mipsbsd.c, * mmo.c, * netbsd.h,
	* netbsd-core.c, * newsos3.c, * nlm-target.h, * nlm32-ppc.c,
	* nlm32-sparc.c, * nlmcode.h, * ns32k.h, * ns32knetbsd.c, * oasys.c,
	* opncls.c, * pc532-mach.c, * pdp11.c, * pe-arm.c, * pe-i386.c,
	* pe-mcore.c, * pe-mips.c, * pe-x86_64.c, * peXXigen.c, * pef.c,
	* pef.h, * pei-arm.c, * pei-i386.c, * pei-mcore.c, * pei-x86_64.c,
	* peicode.h, * plugin.c, * ppcboot.c, * ptrace-core.c, * reloc.c,
	* riscix.c, * rs6000-core.c, * section.c, * som.c, * som.h,
	* sparclinux.c, * sparcnetbsd.c, * srec.c, * stabs.c, * sunos.c,
	* syms.c, * targets.c, * tekhex.c, * trad-core.c, * vax1knetbsd.c,
	* vaxnetbsd.c, * verilog.c, * versados.c, * vms-alpha.c, * vms-lib.c,
	* vms-misc.c, * wasm-module.c, * wasm-module.h, * xcofflink.c,
	* xsym.c, * xsym.h: Whitespace fixes.
	* bfd-in2.h, * libbfd.h, * libcoff.h: Regenerate.
2017-12-06 17:51:43 +10:30
Alan Modra 6528139686 Fix Common symbol override test fails
Fixes fails on SH and NDS32 introduced by dyn_reloc tidy.

	* elf32-lm32.c (lm32_elf_check_relocs): Skip non-ALLOC sections.
	* elf32-m32r.c (m32r_elf_check_relocs): Likewise.
	* elf32-nds32.c (nds32_elf_check_relocs): Likewise.
	* elf32-or1k.c (or1k_elf_check_relocs): Likewise.
	* elf32-sh.c (sh_elf_check_relocs): Likewise.
2017-12-06 17:51:14 +10:30
Alan Modra 3bf083ed23 dyn_relocs tidy
Many targets define their own dyn_relocs struct when they could use
struct elf_dyn_relocs.  This patch tidies that, and uses
readonly_dynrelocs in a few more places.

The SH adjust_dynamic_symbol had some really weird code dating back to
2002 that looked over dynamic relocations for any in SEC_HAS_CONTENTS
or SEC_READONLY sections, rather than just the usual SEC_READONLY
sections.  So basically any dynamic relocation.  What's more, the SH
relocate_section has no support for emitting dynamic relocations in
non-PIC.  In other words, SH has no support for avoiding copy relocs
in non-PIC.  I've made that more obvious by using "if (0 && ..)" in
asjust_dynamic_symbol.

Unfortunately, LM32, M32R, NDS32, and OR1K copied the bogus SH
adjust_dynamic_symbol code.  So none of those targets would have
avoided copy relocs.  LM32, M32R, NDS32 get the "if (0)" treatment
too.  (LM32 is even more broken in that non_got_ref is never set.)

OR1K relocate_section looks like it might support dynamic relocs in
non-PIC, so I've enabled the copy reloc avoidance code for that
target.

	* elf32-hppa.c (struct elf32_hppa_dyn_reloc_entry): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(elf32_hppa_adjust_dynamic_symbol): Comment tidy.
	* elf32-lm32.c (struct elf_lm32_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(lm32_elf_adjust_dynamic_symbol): Use readonly_dynrelocs, but disable.
	Disable -z no-copyreloc too.
	* elf32-m32r.c (struct elf_m32r_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(m32r_elf_adjust_dynamic_symbol): Use readonly_dynrelocs, but disable.
	Disable -z no-copyreloc too.
	* elf32-metag.c (struct elf_metag_dyn_reloc_entry): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(elf_metag_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* elf32-microblaze.c (struct elf32_mb_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(readonly_dynrelocs): New function.
	(microblaze_elf_adjust_dynamic_symbol): Use it.
	* elf32-nds32.c (struct elf_nds32_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(nds32_elf_adjust_dynamic_symbol): Use readonly_dynrelocs, but disable.
	Disable -z no-copyreloc too.
	* elf32-nios2.c (struct elf32_nios2_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	* elf32-or1k.c (struct elf_or1k_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(or1k_elf_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* elf32-sh.c (struct elf_sh_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(sh_elf_adjust_dynamic_symbol): Use readonly_dynrelocs, but disable.
	Disable -z no-copyreloc too.
	* elf32-tilepro.c (struct tilepro_elf_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(tilepro_elf_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* elfnn-riscv.c (struct riscv_elf_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(riscv_elf_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* elfxx-sparc.c (struct _bfd_sparc_elf_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(_bfd_sparc_elf_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* elfxx-tilegx.c (struct tilegx_elf_dyn_relocs): Delete.  Use
	struct elf_dyn_relocs throughout file instead.
	(tilegx_elf_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* elf32-s390.c (elf_s390_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* elf64-s390.c (elf_s390_adjust_dynamic_symbol): Use readonly_dynrelocs.
2017-12-06 14:21:45 +10:30
Alan Modra dce2246a6c Comment tidy
Past tense is wrong for a comment before some action.

	* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Comment tidy.
	* elf64-ppc.c (ppc64_elf_adjust_dynamic_symbol): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_adjust_dynamic_symbol): Likewise.
2017-12-06 14:21:45 +10:30
Alan Modra 826c3f1edc x86 map file textrel
bfd/
	* elfxx-x86.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function.  Always prints via minfo and
	correct "readonly" to "read-only" in warning message., replacing..
	(_bfd_x86_elf_readonly_dynrelocs): ..this.
	(_bfd_x86_elf_size_dynamic_sections): Correct "readonly" to
	"read-only" in warning message.  Formatting.
	(_bfd_x86_elf_adjust_dynamic_symbol): Use readonly_dynrelocs.
	* linker.c (bfd_link_hash_traverse): Comment typo fix.
ld/
	* testsuite/ld-i386/pr17935-1.d: Adjust expected error.
	* testsuite/ld-i386/pr17935-2.d: Likewise.
	* testsuite/ld-x86-64/pr17935-1.d: Likewise.
	* testsuite/ld-x86-64/pr17935-2.d: Likewise.
2017-12-04 23:05:01 +10:30
H.J. Lu 92f402a7e0 x86: Print dynreloc in readonly section for map file output
This fixed:

FAIL: DT_TEXTREL map file warning

on Linux/x86.

	* elfxx-x86.c (_bfd_x86_elf_readonly_dynrelocs): Print dynamic
	relocation in readonly section for map file output.
2017-12-01 04:07:01 -08:00
Alan Modra 63c1f59d66 readonly_dynrelocs
In early October, HJ Lu added support for a number of targets to "Dump
dynamic relocation in read-only section with minfo".  This extends
that support to more targets, displays the symbol involved, and splits
the existing function that sets TEXTREL into a "readonly_dynrelocs"
and "maybe_set_textrel" function.  I'll need "readonly_dynrelocs" if I
ever get around to fixing "pr22374 function pointer initialization"
fails.

am33_2.0, arc, bfin, hppa64, mn10300, and nios2 fail to mark a binary
needing text relocations with DT_TEXTREL.  That's not good.  xtensa also
fails to do so but complains about "dangerous relocation: dynamic
relocation in read-only section" so I reckon that is fine and have
marked the test as an xfail.  The other targets need maintainer
attention.

Curiously, the map file dump wasn't added for x86, so the map test
currently fail on x86.  It also fails on alpha, am33_2.0, arc, bfin,
hppa64, ia64, m68k, mips, mn10300, nios2, score and vax.  cris
complains with "tmpdir/textrel.o, section .rodata: relocation
R_CRIS_32 should not be used in a shared object; recompile with -fPIC"
so I've marked it as an xfail.

bfd/
	* elf32-hppa.c (maybe_set_textrel): Print symbol for map file output.
	* elf32-ppc.c (maybe_set_textrel): Likewise.
	* elf64-ppc.c (maybe_set_textrel): Likewise.
	* elf32-arm.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing..
	(elf32_arm_readonly_dynrelocs): ..this.
	* elf32-lm32.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf32-m32r.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf32-metag.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf32-nds32.c: Delete unnecessary forward declarations.
	(readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf32-or1k.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf32-s390.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf32-sh.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf32-tic6x.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing..
	(elf32_tic6x_readonly_dynrelocs): ..this.
	* elf32-tilepro.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elf64-s390.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elfnn-aarch64.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing..
	(aarch64_readonly_readonly_dynrelocs): ..this.
	* elfnn-riscv.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elfxx-sparc.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
	* elfxx-tilegx.c (readonly_dynrelocs): New function.
	(maybe_set_textrel): New function, replacing old version of..
	(readonly_dynrelocs): ..this.
ld/
	* testsuite/ld-elf/shared.exp: Run new textrel tests.
	* testsuite/ld-elf/textrel.map: New file.
	* testsuite/ld-elf/textrel.rd: New file.
	* testsuite/ld-elf/textrel.s: New file.
	* testsuite/ld-elf/textrel.warn: New file.
2017-12-01 17:23:56 +10:30
Alan Modra 4a7e523498 PR22533, dynamic relocs generated for weak aliases
This cleans up yet more craziness with non_got_ref.

	PR 22533
	* elf32-hppa.c (elf32_hppa_copy_indirect_symbol): Don't do anything
	special with non_got_ref for weak aliases.
	(elf32_hppa_check_relocs): Tweak setting of non_got_ref.
	(elf32_hppa_adjust_dynamic_symbol): When initialising weak aliases,
	don't uselessly copy non_got_ref.  Clear dyn_relocs instead if
	strong symbol is allocated in dynbss.  Tidy comments.
	(elf32_hppa_relocate_section): Comment fix.
	* elf32-ppc.c (ppc_elf_copy_indirect_symbol): Don't do anything
	special with non_got_ref for weak aliases.
	(ppc_elf_adjust_dynamic_symbol): When initialising weak aliases,
	don't uselessly copy non_got_ref.  Clear dyn_relocs instead if
	strong symbol is allocated in dynbss.  Tidy comments.
	* elf64-ppc.c (ppc64_elf_copy_indirect_symbol): Don't do anything
	special with non_got_ref for weak aliases.
	(ppc64_elf_adjust_dynamic_symbol): When initialising weak aliases,
	don't uselessly copy non_got_ref.  Clear dyn_relocs instead if
	strong symbol is allocated in dynbss.  Tidy comments.
2017-12-01 09:06:30 +10:30
Nick Clifton 4581a1c7d3 Check for a NULL symbol pointer when reading relocs from a COFF based file.
PR 22509
	* coffcode.h (coff_slurp_reloc_table): Check for a NULL symbol
	pointer when processing relocs.
2017-11-29 17:12:12 +00:00
Stefan Stroe ca39c2f4dd Support --localedir, --datarootdir and --datadir
bfd/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
binutils/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
gas/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
gold/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
gprof/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
ld/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
opcodes/
	* po/Make-in (datadir): Define as @datadir@.
	(localedir): Define as @localedir@.
	(gnulocaledir, gettextsrcdir): Use @datarootdir@.
2017-11-29 20:10:52 +10:30
Nick Clifton b0029dce68 Prevent a memory exhaustion problem when trying to read in strings from a COFF binary with a corrupt string table size.
PR 22507
	* coffgen.c (_bfd_coff_read_string_table): Check for an excessive
	size of the external string table.
2017-11-28 18:00:29 +00:00
Nick Clifton b23dc97fe2 Fix a memory access violation when attempting to parse a corrupt COFF binary with a relocation that points beyond the end of the section to be relocated.
PR 22506
	* reloc.c (reloc_offset_in_range): Rename to
	bfd_reloc_offset_in_range and export.
	(bfd_perform_relocation): Rename function invocation.
	(bfd_install_relocation): Likewise.
	(bfd_final_link_relocate): Likewise.
	* bfd-in2.h: Regenerate.
	* coff-arm.c (coff_arm_reloc): Use bfd_reloc_offset_in_range.
	* coff-i386.c (coff_i386_reloc): Likewise.
	* coff-i860.c (coff_i860_reloc): Likewise.
	* coff-m68k.c (mk68kcoff_common_addend_special_fn): Likewise.
	* coff-m88k.c (m88k_special_reloc): Likewise.
	* coff-mips.c (mips_reflo_reloc): Likewise.
	* coff-x86_64.c (coff_amd64_reloc): Likewise.
2017-11-28 13:20:31 +00:00
H.J. Lu 6c6bc89930 ELF: Don't set non_ir_ref_regular in check_relocs
Since elf_link_add_object_symbols sets non_ir_ref_regular now, there is
no need to set non_ir_ref_regular in check_relocs.

Tested on i686 and x86-64.

	* elf-m10300.c (mn10300_elf_check_relocs): Don't set
	non_ir_ref_regular.
	* elf32-arm.c (elf32_arm_check_relocs): Likewise.
	* elf32-bfin.c (bfin_check_relocs): Likewise.
	* elf32-cr16.c (cr16_elf_check_relocs): Likewise.
	* elf32-cris.c (cris_elf_check_relocs): Likewise.
	* elf32-d10v.c (elf32_d10v_check_relocs): Likewise.
	* elf32-dlx.c (elf32_dlx_check_relocs): Likewise.
	* elf32-fr30.c (fr30_elf_check_relocs): Likewise.
	* elf32-frv.c (elf32_frv_check_relocs): Likewise.
	* elf32-hppa.c (elf32_hppa_check_relocs): Likewise.
	* elf32-i370.c (i370_elf_check_relocs): Likewise.
	* elf32-i386.c (elf_i386_check_relocs): Likewise.
	* elf32-iq2000.c (iq2000_elf_check_relocs): Likewise.
	* elf32-lm32.c (lm32_elf_check_relocs): Likewise.
	* elf32-m32c.c (m32c_elf_check_relocs): Likewise.
	* elf32-m32r.c (m32r_elf_check_relocs): Likewise.
	* elf32-m68hc1x.c (elf32_m68hc11_check_relocs): Likewise.
	* elf32-m68k.c (elf_m68k_check_relocs): Likewise.
	* elf32-mcore.c (mcore_elf_check_relocs): Likewise.
	* elf32-metag.c (elf_metag_check_relocs): Likewise.
	* elf32-microblaze.c (microblaze_elf_check_relocs): Likewise.
	* elf32-moxie.c (moxie_elf_check_relocs): Likewise.
	* elf32-msp430.c (elf32_msp430_check_relocs): Likewise.
	* elf32-mt.c (mt_elf_check_relocs): Likewise.
	* elf32-nios2.c (nios2_elf32_check_relocs): Likewise.
	* elf32-or1k.c (or1k_elf_check_relocs): Likewise.
	* elf32-ppc.c (ppc_elf_check_relocs): Likewise.
	* elf32-rl78.c (rl78_elf_check_relocs): Likewise.
	* elf32-s390.c (elf_s390_check_relocs): Likewise.
	* elf32-score.c (s3_bfd_score_elf_check_relocs): Likewise.
	* elf32-score7.c (s7_bfd_score_elf_check_relocs): Likewise.
	* elf32-sh.c (sh_elf_check_relocs): Likewise.
	* elf32-tic6x.c (elf32_tic6x_check_relocs): Likewise.
	* elf32-tilepro.c (tilepro_elf_check_relocs): Likewise.
	* elf32-v850.c (v850_elf_check_relocs): Likewise.
	* elf32-vax.c (elf_vax_check_relocs): Likewise.
	* elf32-xstormy16.c (xstormy16_elf_check_relocs): Likewise.
	* elf32-xtensa.c (elf_xtensa_check_relocs): Likewise.
	* elf64-aarch64.c (elf64_aarch64_check_relocs): Likewise.
	* elf64-alpha.c (elf64_alpha_check_relocs): Likewise.
	* elf64-hppa.c (elf64_hppa_check_relocs): Likewise.
	* elf64-ia64-vms.c (elf64_ia64_check_relocs): Likewise.
	* elf64-mmix.c (mmix_elf_check_relocs): Likewise.
	* elf64-ppc.c (ppc64_elf_check_relocs): Likewise.
	* elf64-s390.c (elf_s390_check_relocs): Likewise.
	* elf64-sh64.c (sh_elf64_check_relocs): Likewise.
	* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Likewise.
	* elfnn-ia64.c (elfNN_ia64_check_relocs): Likewise.
	* elfnn-riscv.c (riscv_elf_check_relocs): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_check_relocs): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_check_relocs): Likewise.
	* elfxx-tilegx.c (tilegx_elf_check_relocs): Likewise.
2017-11-28 04:55:34 -08:00