This fixes the recently added ld-elf/pr24511 test failure on pj-elf.
Incidentally, pj-elf has failed its gas "pj" test since 2005-12-22
(git commit 54758c3e39). I think that makes the target ripe for
obsolescence.
bfd/
* elf32-pj.c (pj_elf_reloc): Don't report undefined weak as an error.
ld/
* testsuite/ld-undefined/weak-undef.exp: Don't xfail pj.
m32c_md_end attempted to pad out a code section with nops, but this
was just plain wrong in many ways:
- The padding didn't happen at all if the last section emitted wasn't
a code section.
- The padding went to the wrong place if subsections were used, and
the last subseg used wasn't the highest numbered subseg.
- Padding wasn't added to all code sections.
- If the last section was empty, it was padded to 4 bytes.
- The padding didn't go to a 4-byte alignment boundary, instead it
effectively made the last instruction 4 bytes in size.
- The padding didn't take into account that code sections may have
contents other than machine instructions.
So, rip it out and handle nop padding properly, also fixing .align
.balign/.p2align in the middle of code.
gas/
* config/tc-m32c.c (insn_size): Delete static var.
(md_begin): Don't set it.
(m32c_md_end): Delete.
(md_assemble): Add insn_size auto var.
* config/tc-m32c.h (md_end): Don't define.
(m32c_md_end): Delete.
(NOP_OPCODE, HANDLE_ALIGN, MAX_MEM_FOR_RS_ALIGN_CODE): Define.
* testsuite/gas/all/align.d: Remove m32c from notarget list.
* testsuite/gas/all/incbin.d: Likewise.
* testsuite/gas/elf/dwarf2-11.d: Likewise.
* testsuite/gas/macros/semi.d: Likewise.
* testsuite/gas/all/gas.exp (do_comment): Similarly.
ld/
* testsuite/ld-scripts/fill.d: Don't xfail m32c
* testsuite/ld-scripts/fill16.d: Likewise.
This patch restricts the section names matched in coff_section_type,
a function that translates section names to symbol type, and arranges
to translate section flags to symbol type before looking at names.
The latter change resulted in various test failures due to improper
section flags being used in tests, and by the plugin support, so fix
that too.
The new test fails on many ELF targets that lack .init/fini_array
in their scripts. I've just xfailed those. pru-elf oddly defines
__init_array_begin rather than __init_array_start. I've left that
target as a FAIL, and pj-elf too which reports an error for undefined
weak symbols.
bfd/
PR 24511
* syms.c (coff_section_type): Only allow '.', '$' and numeric
following the standard section names.
(bfd_decode_symclass): Prioritize section flag tests in
decode_section_type before name tests in coff_section_type.
* plugin.c (bfd_plugin_canonicalize_symtab): Init fake_section
and fake_common_section using BFD_FAKE_SECTION. Use "fake" as
their names and choose standard .text section flags for
fake_section.
ld/
PR 24511
* testsuite/ld-elf/pr14156a.d: Allow for .init/.fini being a
data section on hppa64.
* testsuite/ld-elf/pr14156b.d: Likewise.
* testsuite/ld-scripts/pr18963.t: Map standard sections to set
output section flags.
* testsuite/ld-scripts/sane1.t: Likewise.
* testsuite/ld-elf/init-fini-arrays.s: Reference __init_array_start
and __fini_array_start. Define __start et al.
* testsuite/ld-elf/pr24511.d: New test.
Fixes the following error:
ld.pod around line 568: Expected '=item *'
POD document had syntax errors at /usr/bin/pod2man line 71.
* ld.texi (How GNU properties are merged): Avoid pod2man error.
Correct example.
When undefined non-weak references in IR objects are optimized out
by LTO, we can have weak dynamic referencs to symbols marked with
bfd_link_hash_undefined. We shouldn't complain such undefined weak
dynamic references.
bfd/
PR ld/24486
* elflink.c (elf_link_output_extsym): Don't complain undefined
weak dynamic reference.
ld/
PR ld/24486
* testsuite/ld-plugin/lto.exp: Run PR ld/24486 tests.
* testsuite/ld-plugin/pr24486a.c: New file.
* testsuite/ld-plugin/pr24486b.c: Likewise.
* testsuite/ld-plugin/pr24486c.c: Likewise.
When a wrapper symbol, __wrap_FOO, is defined in IR, its resolution
should be LDPR_PREVAILING_DEF, not PREVAILING_DEF_IRONLY, since LTO
doesn't know that __wrap_FOO provides definition of FOO. And resolution
of FOO should be LDPR_RESOLVED_IR since it is resolved by __wrap_FOO in
IR.
PR ld/24406
* ld.texi: Remove LTO warning from --wrap.
* plugin.c (get_symbols): Update resolution for wrapper and
wrapped symbols.
* testsuite/ld-plugin/lto.exp: Run ld/24406 tests.
* testsuite/ld-plugin/pr24406-1.c: New file.
* testsuite/ld-plugin/pr24406-2a.c: Likewise.
* testsuite/ld-plugin/pr24406-2b.c: Likewise.
This patch aims to improve the definitions of BTI and PAC based PLTs.
The following changes are made:
* PLT0 does not need PAC instructions since the PLTGOT[2] (and PLTGOT[1])
are readonly so they cannot be corrupted at runtime. Thus both PAC plt0
and BTI+PAC plt0 are removed and we can use basic plt0 and BTI plt0
instead, respectively.
* We can remove the extra padding nops when we add the new bti instructions.
BTI plt0 and BTI TLSDESC plt are updated.
* For better performance PLTn could be padded to 24bytes. Both BTI pltn and
PAC pltn are updated.
*** bfd/ChangeLog ***
2019-04-25 Sudakshina Das <sudi.das@arm.com>
* elfnn-aarch64.c (PLT_BTI_ENTRY_SIZE): Remove.
(PLT_BTI_TLSDESC_ENTRY_SIZE): Remove.
(PLT_PAC_ENTRY_SIZE, PLT_BTI_PAC_ENTRY_SIZE): Remove.
(PLT_BTI_SMALL_ENTRY_SIZE, PLT_PAC_SMALL_ENTRY_SIZE): Update.
(elfNN_aarch64_small_plt0_pac_entry): Remove.
(elfNN_aarch64_small_plt0_bti_pac_entry): Remove.
(elfNN_aarch64_small_plt0_bti_entry): Update.
(elfNN_aarch64_small_plt_bti_entry): Update.
(elfNN_aarch64_small_plt_pac_entry): Update.
(elfNN_aarch64_tlsdesc_small_plt_bti_entry): Update.
(setup_plt_values): Setup new entries.
(elfNN_aarch64_finish_dynamic_sections): Remove size change.
(elfNN_aarch64_plt_sym_val): Likewise.
*** ld/ChangeLog ***
2019-04-25 Sudakshina Das <sudi.das@arm.com>
* testsuite/ld-aarch64/bti-pac-plt-1.d: Update.
* testsuite/ld-aarch64/bti-pac-plt-2.d: Update.
* testsuite/ld-aarch64/bti-plt-1.d: Update.
* testsuite/ld-aarch64/bti-plt-3.d: Update.
* testsuite/ld-aarch64/bti-plt-5.d: Update.
* testsuite/ld-aarch64/pac-plt-1.d: Update.
* testsuite/ld-aarch64/pac-plt-2.d: Update.
The ld testsuite includes numerous tests that depend on being able to
compile and link programs with the C compiler. Some of these tests
use [which $CC] to check for the presence of the compiler before
proceeding with the test, but run_ld_link_exec_tests and run_cc_link_tests
give ERRORs if compilation fails. Also, even if $CC is defined and present,
it may not be usable due to missing libraries, etc.
This patch adds a new procedure check_compiler_available that attempts
to build an empty program and caches the result. Uses of [which $CC]
are replaced with calls to this procedure, and run_ld_link_exec_tests
and run_cc_link_tests now also guard attempts to use $CC.
2019-04-24 Sandra Loosemore <sandra@codesourcery.com>
ld/
* testsuite/config/default.exp: Use [check_compiler_available]
instead of [which $CC].
* testsuite/ld-auto-import/auto-import.exp: Likewise.
* testsuite/ld-cygwin/exe-export.exp: Likewise.
* testsuite/ld-elf/audit.exp: Likewise.
* testsuite/ld-elf/compress.exp: Likewise.
* testsuite/ld-elf/dwarf.exp: Likewise.
* testsuite/ld-elf/elf.exp: Likewise.
* testsuite/ld-elf/indirect.exp: Likewise.
* testsuite/ld-elf/linux-x86.exp: Likewise.
* testsuite/ld-elf/shared.exp: Likewise.
* testsuite/ld-elf/tls.exp: Likewise.
* testsuite/ld-elf/wrap.exp: Likewise.
* testsuite/ld-elfcomm/elfcomm.exp: Likewise.
* testsuite/ld-elfvers/vers.exp: Likewise.
* testsuite/ld-elfvsb/elfvsb.exp: Likewise.
* testsuite/ld-elfweak/elfweak.exp: Likewise.
* testsuite/ld-gc/gc.exp: Likewise.
* testsuite/ld-i386/i386.exp: Likewise.
* testsuite/ld-i386/no-plt.exp: Likewise.
* testsuite/ld-i386/tls.exp: Likewise.
* testsuite/ld-ifunc/ifunc.exp: Likewise.
* testsuite/ld-mn10300/mn10300.exp: Likewise.
* testsuite/ld-pe/pe-compile.exp: Likewise.
* testsuite/ld-pe/pe-run.exp: Likewise.
* testsuite/ld-pe/pe-run2.exp: Likewise.
* testsuite/ld-pie/pie.exp: Likewise.
* testsuite/ld-plugin/lto.exp: Likewise.
* testsuite/ld-plugin/plugin.exp: Likewise.
* testsuite/ld-scripts/crossref.exp: Likewise.
* testsuite/ld-sh/sh.exp: Likewise.
* testsuite/ld-shared/shared.exp: Likewise.
* testsuite/ld-size/size.exp: Likewise.
* testsuite/ld-srec/srec.exp: Likewise.
* testsuite/ld-undefined/undefined.exp: Likewise.
* testsuite/ld-unique/unique.exp: Likewise.
* testsuite/ld-x86-64/mpx.exp: Likewise.
* testsuite/ld-x86-64/no-plt.exp: Likewise.
* testsuite/ld-x86-64/tls.exp: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/lib/ld-lib.exp (run_ld_link_exec_tests): Call
check_compiler_available before trying to use the compiler.
(run_cc_link_tests): Likewise.
(check_compiler_available): New. Use it instead of [which $CC].
Commit c40e31a121 broke --enable-dependency-tracking=no.
* Makefile.am (GENDEPDIR): New var, used..
(GENSCRIPTS): ..here.
* Makefile.in: Regenerate.
* genscripts.sh: Test for $DEPDIR set before every use.
This tidies the remaining --no-print-map-discarded fails. h8300-elf
warns on a section without flags, and s12z doesn't support
--gc-sections.
bfd/
* elf32-s12z.c (elf_backend_can_gc_sections): Don't define
ld/
* testsuite/ld-gc/skip-map-discarded.s: Add section attributes.
* testsuite/lib/ld-lib.exp (check_gc_sections_available): Add
s12z to list of targets not supporting --gc-sections.
ld * config/tc-msp430.c (msp430_make_init_symbols): Define __crt0_init_bss
symbol when .lower.bss or .either.bss sections exist.
Define __crt0_movedata when .lower.data or .either.data sections exist.
* testsuite/gas/msp430/either-data-bss-sym.d: New test.
* testsuite/gas/msp430/low-data-bss-sym.d: New test.
* testsuite/gas/msp430/either-data-bss-sym.s: New test source.
* testsuite/gas/msp430/low-data-bss-sym.s: New test source.
* testsuite/gas/msp430/msp430.exp: Run new tests.
Enable large code model when running -mdata-region={upper,either}
tests.
Some of these tests were excluded for ns32k-netbsd, exclude for all
ns32k instead.
binutils/
* testsuite/binutils-all/copy-2.d: Don't run for ns32k-*-*.
* testsuite/binutils-all/copy-3.d: Likewise.
gas/
* testsuite/gas/all/gas.exp: Remove ns32k xfails.
* testsuite/gas/all/weakref1u.d: Don't run for ns32k-*-*.
ld/
* testsuite/ld-scripts/pr20302.d: Don't run for ns32k-*-*.
* testsuite/ld-scripts/section-match-1.d: Likewise.
* testsuite/ld-undefined/require-defined.exp: Likewise.
s patch is part of a series of patches to add support for Armv8.1-M Mainline instructions to binutils.
This patch adds the BFCSEL instruction. It also adds a local relocation with a new bfd_reloc_code_real enum.
ChangeLog entries are as follows:
2019-04-15 Sudakshina Das <sudi.das@arm.com>
* reloc.c (BFD_RELOC_THUMB_PCREL_BFCSEL): New relocation.
* bfd-in2.h: Regenerated.
* libbfd.h: Likewise.
*** gas/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
Andre Vieira <andre.simoesdiasvieira@arm.com>
* config/tc-arm.c (T16_32_TAB): New entriy for bfcsel.
(do_t_v8_1_branch): New switch case for bfcsel.
(toU): Define.
(insns): New instruction for bfcsel.
(md_pcrel_from_section): New switch case
for BFD_RELOC_THUMB_PCREL_BFCSEL.
(md_appdy_fix): Likewise
(tc_gen_reloc): Likewise.
* testsuite/gas/arm/armv8_1-m-bfcsel.d: New.
* testsuite/gas/arm/armv8_1-m-bfcsel.s: New.
*** ld/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
* testsuite/ld-arm/bfcsel.s: New.
* testsuite/ld-arm/bfcsel.d: New.
* testsuite/ld-arm/arm-elf.exp: Add above test.
*** opcodes/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
* arm-dis.c (thumb32_opcodes): New instruction bfcsel.
(print_insn_thumb32): Edit the switch case for %Z.
This patch is part of a series of patches to add support for Armv8.1-M Mainline
instructions to binutils.
This patch adds the BFL instruction.
*** gas/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
Andre Vieira <andre.simoesdiasvieira@arm.com>
* config/tc-arm.c (T16_32_TAB): New entrie for bfl.
(do_t_v8_1_branch): New switch case for bfl.
(insns): New instruction for bfl.
* testsuite/gas/arm/armv8_1-m-bfl.d: New.
* testsuite/gas/arm/armv8_1-m-bfl.s: New.
* testsuite/gas/arm/armv8_1-m-bfl-bad.s: New.
* testsuite/gas/arm/armv8_1-m-bfl-bad.d: New.
* testsuite/gas/arm/armv8_1-m-bfl-bad.l: New.
* testsuite/gas/arm/armv8_1-m-bfl-rel.d: New.
* testsuite/gas/arm/armv8_1-m-bfl-rel.s: New.
*** ld/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
* testsuite/ld-arm/bfl.s: New.
* testsuite/ld-arm/bfl.d: New.
* testsuite/ld-arm/arm-elf.exp: Add above test.
*** opcodes/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
* arm-dis.c (thumb32_opcodes): New instruction bfl.
This patch is part of a series of patches to add support for Armv8.1-M Mainline
instructions to binutils.
This patch adds the BF instruction.
ChangeLog entries are as follows:
*** gas/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
Andre Vieira <andre.simoesdiasvieira@arm.com>
* config/tc-arm.c (T16_32_TAB): New entries for bf.
(do_t_branch_future): New.
(insns): New instruction for bf.
* testsuite/gas/arm/armv8_1-m-bf.d: New.
* testsuite/gas/arm/armv8_1-m-bf.s: New.
* testsuite/gas/arm/armv8_1-m-bf-bad.s: New.
* testsuite/gas/arm/armv8_1-m-bf-bad.l: New.
* testsuite/gas/arm/armv8_1-m-bf-bad.d: New.
* testsuite/gas/arm/armv8_1-m-bf-rel.d: New.
* testsuite/gas/arm/armv8_1-m-bf-rel.s: New.
*** ld/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
* testsuite/ld-arm/bf.s: New.
* testsuite/ld-arm/bf.d: New.
* testsuite/ld-arm/arm-elf.exp: Add above test.
*** opcodes/ChangeLog ***
2019-04-15 Sudakshina Das <sudi.das@arm.com>
* arm-dis.c (thumb32_opcodes): New instructions for bf.
The patch is straightforward, it does the following:
- support the new Tag_CPU_arch build attribute value, ie.:
+ declare the new value
+ update all the asserts forcing logic to be reviewed for new
architectures
+ create a corresponding bfd_mach_arm_8_1M_MAIN enumerator in bfd and
add mapping from Tag_CPU_arch to it
+ teach readelf about new Tag_CPU_arch value
- declare armv8.1-m.main as a supported architecture value
- define Armv8.1-M Mainline in terms of feature bits available
- tell objdump mapping from bfd_mach_arm_8_1M_MAIN enumerator to feature
bits available
- update architecture-specific logic in gas and bfd guarded by the
asserts mentioned above.
- tests for all the above
ChangeLog entries are as follows:
*** bfd/ChangeLog ***
2019-04-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
* archures.c (bfd_mach_arm_8_1M_MAIN): Define.
* bfd-in2.h: Regenerate.
* cpu-arm.c (arch_info_struct): Add entry for Armv8.1-M Mainline.
* elf32-arm.c (using_thumb_only): Return true for Armv8.1-M Mainline
and update assert.
(using_thumb2): Likewise.
(using_thumb2_bl): Update assert.
(arch_has_arm_nop): Likewise.
(bfd_arm_get_mach_from_attributes): Add case for Armv8.1-M Mainline.
(tag_cpu_arch_combine): Add logic for Armv8.1-M Mainline merging.
*** binutils/ChangeLog ***
2019-04-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
* readelf.c (arm_attr_tag_CPU_arch): Add entry for Armv8.1-M Mainline.
*** gas/ChangeLog ***
2019-04-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
* config/tc-arm.c (cpu_arch_ver): Add entry for Armv8.1-M Mainline
Tag_CPU_arch build attribute value. Reindent.
(get_aeabi_cpu_arch_from_fset): Update assert.
(aeabi_set_public_attributes): Update assert for Tag_DIV_use logic.
* testsuite/gas/arm/attr-march-armv8_1-m.main.d: New test.
*** include/ChangeLog ***
2019-04-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf/arm.h (TAG_CPU_ARCH_V8_1M_MAIN): new macro.
(MAX_TAG_CPU_ARCH): Set value to above macro.
* opcode/arm.h (ARM_EXT2_V8_1M_MAIN): New macro.
(ARM_AEXT_V8_1M_MAIN): Likewise.
(ARM_AEXT2_V8_1M_MAIN): Likewise.
(ARM_ARCH_V8_1M_MAIN): Likewise.
*** ld/ChangeLog ***
2019-04-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
* testsuite/ld-arm/attr-merge-13.attr: New test.
* testsuite/ld-arm/attr-merge-13a.s: New test.
* testsuite/ld-arm/attr-merge-13b.s: New test.
*** opcodes/ChangeLog ***
2019-04-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
* arm-dis.c (select_arm_features): Add logic for Armv8.1-M Mainline.
It is no longer true that autoconf/automake cannot substitute vars
with embedded new-lines.
* configure.ac (TDIRS): Build up tdirs in this variable and
AC_SUBST, also using AM_SUBST_NOTMAKE.
* configure: Regenerate.
* Makefile.am (DISTCLEANFILES): Remove tdirs.
* Makefile.in: Regenerate.
Add a new option to disable the listing of discarded sections
in map file output. The use case stems from a large application
built with -ffunction-sections --gc-sections where the list of
discarded sections blows up the map file output. The default
behaviour remains to print discarded sections, but the new option
allows us to disable it.
ld/
* NEWS: Mention new option --no-print-map-discarded.
* ld.h (ld_config_type) <print_map_discarded>: New field.
* ldlang.c (lang_map): Conditionally output discarded sections
in map files based on configuration option.
* ldlex.h (option_values) <OPTION_PRINT_MAP_DISCARDED,
OPTION_NO_PRINT_MAP_DISCARDED>: New.
* ldmain.c (main): Enabled print_map_discarded by default.
* lexsup.c (ld_options): Add new command-line options.
(parse_args) <OPTION_NO_PRINT_MAP_DISCARDED,
OPTION_PRINT_MAP_DISCARDED>: New cases.
* ld.texi: Document new options.
* testsuite/ld-gc/gc.exp: Add new test.
* testsuite/ld-gc/skip-map-discarded.s: New file.
* testsuite/ld-gc/skip-map-discarded.d: New file.
* testsuite/ld-gc/skip-map-discarded.map: New file.
Add -static-pie tests for DT_INIT_ARRAY, DT_FINI_ARRAY, DT_PREINIT_ARRAY
and IFUNC.
* testsuite/config/default.exp (STATIC_PIE_LDFLAGS): New. Set
to "-static-pie" if target compiler supports it.
* testsuite/ld-elf/elf.exp: Run -static-pie tests if
$STATIC_PIE_LDFLAGS isn't empty.
* testsuite/ld-ifunc/ifunc.exp: Likewise.
When using DF_BIND_NOW on AArch64 we don't reserve the GOT slot for a TLSDESC,
but we still emitted DT_TLSDESC_GOT and DT_TLSDESC_PLT. This caused random
memory corruption as the "special" value of (bfd_vma)-1 would be set for
dt_tlsdesc_got.
Since we don't have a value of dt_tlsdesc_got I also don't emit DT_TLSDESC_PLT
now becuase it would point to an incomplete PLT. To be able to write the PLT
entry DT_TLSDESC_GOT is needed and since we don't have one we can't write the
PLT entry either.
It is my understanding that GLIBC doesn't need these two entries when not lazy
loading. Conversely AArch32 does not reserve neither the GOT not the PLT slot
when doing DF_BIND_NOW.
AArch32 does not need these checks because these values are initialized to 0
and so the if (...) checks don't pass, but on AArch64 these are initialized
to (bfd_vma)-1 and thus we need some extra checks.
bfd/ChangeLog:
PR ld/24302
* elfnn-aarch64.c (elfNN_aarch64_size_dynamic_sections): Don't emit
DT_TLSDESC_GOT and DT_TLSDESC_PLT when DF_BIND_NOW.
(elfNN_aarch64_finish_dynamic_sections): Don't write PLT if DF_BIND_NOW.
ld/ChangeLog:
PR ld/24302
* testsuite/ld-aarch64/aarch64-elf.exp: Add new test.
* testsuite/ld-aarch64/tls-relax-gdesc-le-now.d: New test.
__rel[a]_iplt_start and __rel[a]_iplt_end are defined to handle IFUNC in
static executables. For PIE, since IFUNC is handled as the part of the
normal dynamic relocation processing, there is no need to define these
symbols in PIE.
* scripttempl/elf.sc (CREATE_PIC): New. Set for CREATE_SHLIB or
CREATE_PIE.
(__rel_iplt_start): Don't define for CREATE_PIC.
(__rel_iplt_end): Likewise.
(__rela_iplt_start): Likewise.
(__rela_iplt_end): Likewise.
This fixes the csky-elf ld-elf/pr21884 and ld-unique/pr21529 failures,
by disabling branch stubs for binary (and other non-csky) output.
The csky-linux target gets branch stubs off by default because
presumably there are reasons why branch stubs were disabled, but
rather than killing the support completely it can be enabled by
--branch-stub.
* emultempl/cskyelf.em (csk_elf_before_parse): New function,
setting use_branch_stub false for linux.
(csky_elf_create_output_section_statements): Do emit this
function and all others in the file for linux, plus the branch
option control. Disable branch stubs when non-ELF.
In looking at the csky-elf vs. csky-linux differences, the first thing
I compared was csky_elf.sh and cskyelf_linux.sh. Those files are
mostly the same but besides the real differences, annoyingly have some
lines ordered differently. It's better in such cases to have one file
source the other, making differences plain. This patch does that for
csky and microblaze, removes an unused variable defined in a few
places, and fixes ld makefile dependencies.
* Makefile.am (eskyelf.c, eskyelf_linux.c): Depend on cskyelf.em.
(ecskyelf_linux.c): Depend on cskyelf.sh.
(eelf32microblazeel.c): Depend on elf32microblaze.sh.
* Makefile.in: Regenerate.
* emulparams/cskyelf.sh: Comment regarding cskelf_linux.sh.
(PAGE_SIZE): Don't define.
* emulparams/cskyelf_linux.sh: Source sckyelf.sh, leaving just
the differing variable defs/undefs.
* emulparams/elf32mcore.sh (PAGE_SIZE): Don't define.
* emulparams/elf32microblaze.sh: Comment re. elf32microblazeel.sh.
(OUTPUT_FORMAT): Use BIG_OUTPUT_FORMAT.
(PAGE_SIZE): Don't define.
* emulparams/elf32microblazeel.sh: Source elf32microblaze.sh,
leaving just the differing OUTPUT_FORMAT.
When an instruction has operands, the PowerPC disassembler prints
spaces after the opcode so as to line up operands. If the operands
are all optional and all default value, then no operands are printed,
leaving trailing spaces. This patch fixes that.
opcodes/
* ppc-dis.c (print_insn_powerpc): Delay printing spaces after
opcode until first operand is output.
gas/
* testsuite/gas/ppc/476.d: Remove trailing spaces.
* testsuite/gas/ppc/a2.d: Likewise.
* testsuite/gas/ppc/booke.d: Likewise.
* testsuite/gas/ppc/booke_xcoff.d: Likewise.
* testsuite/gas/ppc/e500.d: Likewise.
* testsuite/gas/ppc/e500mc.d: Likewise.
* testsuite/gas/ppc/e6500.d: Likewise.
* testsuite/gas/ppc/htm.d: Likewise.
* testsuite/gas/ppc/power6.d: Likewise.
* testsuite/gas/ppc/power8.d: Likewise.
* testsuite/gas/ppc/power9.d: Likewise.
* testsuite/gas/ppc/vle.d: Likewise.
ld/
* testsuite/ld-powerpc/tlsexe32.d: Remove trailing spaces.
* testsuite/ld-powerpc/tlsopt5.d: Likewise.
* testsuite/ld-powerpc/tlsopt5_32.d: Likewise.
Let's hope no one has section names starting with '/' in scripts. If
they do, this change to fix parsing of '/' in expressiongs will break
their project.
PR 24411
ldlex.l (SYMBOLNAMECHAR1): Don't match '/'.
(<EXPRESSION>"/DISCARD/"): New.
Underscore was specified twice in all these patterns, and backslash
twice in some. Flex warned about the $SYSROOT rule, which is covered
by earlier rules: "ldlex.l:386: warning, rule cannot be matched".
* ldlex.l: Formatting.
(CMDFILENAMECHAR, CMDFILENAMECHAR1): Delete.
(FILENAMECHAR1, SYMBOLNAMECHAR1, FILENAMECHAR, WILDCHAR),
(NOCFILENAMECHAR): Remove duplicate chars. Reorder.
(SYMBOLCHARN): Likewise. Rename to SYMBOLNAMECHAR.
(<INPUTLIST>"$SYSROOT"..): Delete rule.
shrink_dynamic_reloc_sections must remove PLT entry that was created for
an undefined weak symbol in the presence of --export-dynamic option when
relaxation coalesces literals pointing to that symbol. This fixes the
following assertion:
ld: BFD (GNU Binutils) 2.31.1 internal error, aborting at
elf32-xtensa.c:3292 in elf_xtensa_finish_dynamic_sections
2019-03-29 Max Filippov <jcmvbkbc@gmail.com>
bfd/
* elf32-xtensa.c (shrink_dynamic_reloc_sections): Add
info->export_dynamic to the conditional.
ld/
* testsuite/ld-xtensa/relax-undef-weak-pie-export-dynamic.d: New
test definition.
* testsuite/ld-xtensa/xtensa.exp
(relax-undef-weak-pie-export-dynamic): Add new test.
ld/ChangeLog:
2019-02-26 Martin Liska <mliska@suse.cz>
* plugin.c (get_symbols): Add lto_kind_str, lto_resolution_str,
lto_visibility_str and use then to inform about plugin-symbols.
* testsuite/ld-plugin/plugin-12.d: Adjust expected pattern.
Similar to the AArch64 patches the Arm disassembler has the same issues with
out of order sections but also a few short comings.
For one thing there are multiple code blocks to determine mapping symbols, and
they all work slightly different, and neither fully correct. The first thing
this patch does is centralise the mapping symbols search into one function
mapping_symbol_for_insn. This function is then updated to perform a search in
a similar way as AArch64.
Their used to be a value has_mapping_symbols which was used to determine the
default disassembly for objects that have no mapping symbols. The problem with
the approach was that it was determining this value in the same loop that needed
it, which is why this field could take on the states -1, 0, 1 where -1 means
"don't know". However this means that until you actually find a mapping symbol
or reach the end of the disassembly glob, you don't know if you did the right
action or not, and if you didn't you can't correct it anymore.
This is why the two jump-reloc-veneers-* testcases end up disassembling some
insn as data when they shouldn't.
Out of order here refers to an object file where sections are not listed in a
monotonic increasing VMA order.
The ELF ABI for Arm [1] specifies the following for mapping symbols:
1) A text section must always have a corresponding mapping symbol at it's
start.
2) Data sections do not require any mapping symbols.
3) The range of a mapping symbol extends from the address it starts on up to
the next mapping symbol (exclusive) or section end (inclusive).
However there is no defined order between a symbol and it's corresponding
mapping symbol in the symbol table. This means that while in general we look
up for a corresponding mapping symbol, we have to make at least one check of
the symbol below the address being disassembled.
When disassembling different PCs within the same section, the search for mapping
symbol can be cached somewhat. We know that the mapping symbol corresponding to
the current PC is either the previous one used, or one at the same address as
the current PC.
However this optimization and mapping symbol search must stop as soon as we
reach the end or start of the section. Furthermore if we're only disassembling
a part of a section, the search is a allowed to search further than the current
chunk, but is not allowed to search past it (The mapping symbol if there, must
be at the same address, so in practice we usually stop at PC+4).
lastly, since only data sections don't require a mapping symbol the default
mapping type should be DATA and not INSN as previously defined, however if the
binary has had all its symbols stripped than this isn't very useful. To fix
this we determine the default based on the section flags. This will allow the
disassembler to be more useful on stripped binaries. If there is no section
than we assume you to be disassembling INSN.
[1] https://developer.arm.com/docs/ihi0044/latest/elf-for-the-arm-architecture-abi-2018q4-documentation#aaelf32-table4-7
binutils/ChangeLog:
* testsuite/binutils-all/arm/in-order-all.d: New test.
* testsuite/binutils-all/arm/in-order.d: New test.
* testsuite/binutils-all/arm/objdump.exp: Support .d tests.
* testsuite/binutils-all/arm/out-of-order-all.d: New test.
* testsuite/binutils-all/arm/out-of-order.T: New test.
* testsuite/binutils-all/arm/out-of-order.d: New test.
* testsuite/binutils-all/arm/out-of-order.s: New test.
ld/ChangeLog:
* testsuite/ld-arm/jump-reloc-veneers-cond-long.d: Update disassembly.
* testsuite/ld-arm/jump-reloc-veneers-long.d: Update disassembly.
opcodes/ChangeLog:
* arm-dis.c (struct arm_private_data): Remove has_mapping_symbols.
(mapping_symbol_for_insn): Implement new algorithm.
(print_insn): Remove duplicate code.
The AArch64 linker option to turn on BTI (--force-bti) warns in case there are
input objects which have a missing GNU NOTE section for BTI. This patch is trying
to improve the warnings that come out.
In order to do so, I propose adding a new argument to elf_merge_gnu_properties
and the backend function merge_gnu_properties. This new argument makes sure
that we now pass both the objects along with the properties to which they
belong to. The x86 backend function has also been updated to match this
change.
*** bfd/ChangeLog ***
2019-03-21 Sudakshina Das <sudi.das@arm.com>
* elf-bfd.h (struct elf_backend_data): Add argument to
merge_gnu_properties.
* elf-properties.c (elf_merge_gnu_properties): Add argument to
itself and while calling bed->merge_gnu_properties.
(elf_merge_gnu_property_list): Update the calls for
elf_merge_gnu_properties.
* elfnn-aarch64.c (elfNN_aarch64_merge_gnu_properties): Update handling
of --force-bti warning and add argument.
* elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Add
warning.
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Add argument.
* elfxx-x86.h (_bfd_x86_elf_merge_gnu_properties): Likewise in
declaration.
*** ld/ChangeLog ***
2019-03-21 Sudakshina Das <sudi.das@arm.com>
* testsuite/ld-aarch64/aarch64-elf.exp: Add new test.
* testsuite/ld-aarch64/bti-plt-1.s: Add .ifdef for PAC note section.
* testsuite/ld-aarch64/bti-plt-6.d: Update warning.
* testsuite/ld-aarch64/bti-plt-7.d: Likewise.
* testsuite/ld-aarch64/bti-warn.d: New test.
The special case for .init and .fini in update_wild_statements is
ineffective for .init or .fini wildcards inside other output sections.
The special case needs to be on the wildcard, not the output section.
This patch is belt and braces, both fixing update_wild_statements and
the scripts.
* scripttempl/alpha.sc, * scripttempl/armbpabi.sc,
* scripttempl/crisaout.sc, * scripttempl/elf32cr16.sc,
* scripttempl/elf32crx.sc, * scripttempl/elf32xc16x.sc,
* scripttempl/elf32xc16xl.sc, * scripttempl/elf32xc16xs.sc,
* scripttempl/elf64hppa.sc, * scripttempl/elf_chaos.sc,
* scripttempl/elfarc.sc, * scripttempl/elfarcv2.sc,
* scripttempl/elfd30v.sc, * scripttempl/elfm68hc11.sc,
* scripttempl/elfm68hc12.sc, * scripttempl/elfm9s12z.sc,
* scripttempl/elfmicroblaze.sc, * scripttempl/elfxgate.sc,
* scripttempl/elfxtensa.sc, * scripttempl/epiphany_4x4.sc,
* scripttempl/ft32.sc, * scripttempl/i386beos.sc,
* scripttempl/iq2000.sc, * scripttempl/mcorepe.sc,
* scripttempl/mep.sc, * scripttempl/mips.sc, * scripttempl/moxie.sc,
* scripttempl/pe.sc, * scripttempl/pep.sc, * scripttempl/ppcpe.sc,
* scripttempl/tic4xcoff.sc, * scripttempl/tic80coff.sc,
* scripttempl/v850.sc, * scripttempl/v850_rh850.sc,
* scripttempl/visium.sc, * scripttempl/xstormy16.sc: Add KEEP and
SORT_NONE to .init and .fini wildcards.
* scripttempl/elf32xc16x.sc,
* scripttempl/elf32xc16xl.sc,
* scripttempl/elf32xc16xs.sc: Add .fini wildcard.
* scripttempl/elf_chaos.sc: Add .init output section.
* scripttempl/elfd30v.sc: Remove duplicate .init.
* scripttempl/elfm68hc11.sc, * scripttempl/elfm68hc12.sc,
* scripttempl/elfm9s12z.sc, * scripttempl/elfxgate.sc: Remove
duplicate .init, and add .fini wildcard.
* scripttempl/ppcpe.sc (INIT, FINI): Delete.
* ldlang.c (update_wild_statements): Special case .init and
.fini in the wildcard, not the output section.
A number of the fails are due to ld supporting the creation of shared
libraries but not allowing linking against them without using an
option like -Bdynamic.
FAIL: Symbol export class test (final shared object)
FAIL: PROVIDE_HIDDEN test 4
FAIL: PROVIDE_HIDDEN test 6
FAIL: PROVIDE_HIDDEN test 10
FAIL: PROVIDE_HIDDEN test 12
FAIL: Build pr22471b.so
FAIL: Build pr22649-2b.so
FAIL: Build pr22649-2d.so
FAIL: PR ld/20828 dynamic symbols with section GC (plain)
FAIL: PR ld/20828 dynamic symbols with section GC (version script)
FAIL: PR ld/20828 dynamic symbols with section GC (versioned)
FAIL: PR ld/21233 dynamic symbols with section GC (--undefined)
FAIL: PR ld/21233 dynamic symbols with section GC (--require-defined)
FAIL: PR ld/21233 dynamic symbols with section GC (EXTERN)
FAIL: Build pr22150
FAIL: PR ld/14170
FAIL: Link using broken linker script
FAIL: pr17068 link --as-needed lib in group
FAIL: ld-gc/pr20022
* emulparams/elf32lm32fd.sh (DYNAMIC_LINK): Undef.
Generic linker ELF targets using CREATE_OBJECT_SYMBOLS in their
scripts run into a problem. The file symbols are created by
_bfd_generic_link_output_symbols in each object file, in the section
corresponding to the CREATE_OBJECT_SYMBOLS section, typically .text.
If it so happens that the output .text section is stripped due to
being empty, then elf.c:assign_section_numbers won't assign an ELF
section number and swap_out_syms will report "unable to find
equivalent output section" for the object symbols. Fix this by
always keeping an output section with CREATE_OBJECT_SYMBOLS.
* ldlang.c (lang_size_sections_1): Set SEC_KEEP on
create_object_symbols_section.
* testsuite/ld-elf/pr22319.d: Don't xfail dlx.
* testsuite/ld-elf/merge.d: Remove csky from xfails, add moxie.
* testsuite/ld-elf/pr21884.d: Remove csky from xfails.
* testsuite/ld-elf/shared.exp: Add csky to list not xfailing pr22374.
* testsuite/ld-unique/pr21529.d: Remove csky from xfails
This is part of the patch series to add support for BTI and
PAC in AArch64 linker.
1) This patch adds new definitions of PAC enabled PLTs
and both BTI and PAC enabled PLTs.
2) It also defines the new dynamic tag DT_AARCH64_PAC_PLT
for the PAC enabled PLTs.
3) This patch adds a new ld command line option: --pac-plt.
In the presence of this option, the linker uses the PAC
enabled PLTs and marks with DT_AARCH64_PAC_PLT.
4) In case both BTI and PAC are enabled the linker should
pick PLTs enabled with both and also use dynamic tags for both.
All these are made according to the new AArch64 ELF ABI
https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4
*** bfd/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* elfnn-aarch64.c (PLT_PAC_ENTRY_SIZE, PLT_PAC_SMALL_ENTRY_SIZE): New.
(PLT_BTI_PAC_ENTRY_SIZE, PLT_BTI_PAC_SMALL_ENTRY_SIZE): New.
(setup_plt_values): Account for PAC or PAC and BTI enabled PLTs.
(elfNN_aarch64_size_dynamic_sections): Add checks for PLT_BTI_PAC
and PLT_PAC_PLT.
(elfNN_aarch64_finish_dynamic_sections): Account for PLT_BTI_PAC.
(get_plt_type): Add case for DT_AARCH64_PAC_PLT.
(elfNN_aarch64_plt_sym_val): Add cases for PLT_BTI_PAC and PLT_PAC.
*** binutils/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* readelf.c (get_aarch64_dynamic_type): Add case for
DT_AARCH64_PAC_PLT.
(dynamic_section_aarch64_val): Likewise.
*** include/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* elf/aarch64.h (DT_AARCH64_PAC_PLT): New.
*** ld/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* NEWS: Document --pac-plt.
* emultempl/aarch64elf.em (OPTION_PAC_PLT): New.
(PARSE_AND_LIST_LONGOPTS, PARSE_AND_LIST_OPTIONS): Add pac-plt.
(PARSE_AND_LIST_ARGS_CASES): Handle OPTION_PAC_PLT.
* testsuite/ld-aarch64/aarch64-elf.exp: Add the following tests.
* testsuite/ld-aarch64/bti-pac-plt-1.d: New test.
* testsuite/ld-aarch64/bti-pac-plt-2.d: New test.
* testsuite/ld-aarch64/pac-plt-1.d: New test.
* testsuite/ld-aarch64/pac-plt-2.d: New test.
* testsuite/ld-aarch64/bti-plt-1.s: Add .ifndef directive.
This is part of the patch series to add support for BTI and
PAC in AArch64 linker.
1) This patch adds a new ld command line option: --force-bti.
In the presence of this option, the linker enables BTI with the
GNU_PROPERTY_AARCH64_FEATURE_1_BTI feature. This gives out warning
in case of missing gnu notes for BTI in inputs.
2) It also defines a new set of BTI enabled PLTs. These are used either
when all the inputs are marked with GNU_PROPERTY_AARCH64_FEATURE_1_BTI
or when the new --force-bti option is used. This required adding new
fields in elf_aarch64_link_hash_table so that we could make the PLT
related information more generic.
3) It also defines a dynamic tag DT_AARCH64_BTI_PLT. The linker uses
this whenever it picks BTI enabled PLTs.
All these are made according to the new AArch64 ELF ABI
https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4
*** bfd/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
Szabolcs Nagy <szabolcs.nagy@arm.com>
* bfd-in.h (aarch64_plt_type, aarch64_enable_bti_type): New.
(aarch64_bti_pac_info): New.
(bfd_elf64_aarch64_set_options): Add aarch64_bti_pac_info argument.
(bfd_elf32_aarch64_set_options): Likewise.
* bfd-in2.h: Regenerate
* elfnn-aarch64.c (PLT_BTI_ENTRY_SIZE): New.
(PLT_BTI_SMALL_ENTRY_SIZE, PLT_BTI_TLSDESC_ENTRY_SIZE): New.
(elfNN_aarch64_small_plt0_bti_entry): New.
(elfNN_aarch64_small_plt_bti_entry): New.
(elfNN_aarch64_tlsdesc_small_plt_bti_entry): New.
(elf_aarch64_obj_tdata): Add no_bti_warn and plt_type fields.
(elf_aarch64_link_hash_table): Add plt0_entry, plt_entry and
tlsdesc_plt_entry_size fields.
(elfNN_aarch64_link_hash_table_create): Initialise the new fields.
(setup_plt_values): New helper function.
(bfd_elfNN_aarch64_set_options): Use new bp_info to set plt sizes and
bti enable type.
(elfNN_aarch64_allocate_dynrelocs): Use new size members instead of
fixed macros.
(elfNN_aarch64_size_dynamic_sections): Likewise and add checks.
(elfNN_aarch64_create_small_pltn_entry): Use new generic pointers
to plt stubs instead of fixed ones and update filling them according
to the need for bti.
(elfNN_aarch64_init_small_plt0_entry): Likewise.
(elfNN_aarch64_finish_dynamic_sections): Likewise.
(get_plt_type, elfNN_aarch64_get_synthetic_symtab): New.
(elfNN_aarch64_plt_sym_val): Update size accordingly.
(elfNN_aarch64_link_setup_gnu_properties): Set up plts if BTI GNU NOTE
is set.
(bfd_elfNN_get_synthetic_symtab): Define.
(elfNN_aarch64_merge_gnu_properties): Give out warning with --force-bti
and mising BTI NOTE SECTION.
*** binutils/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
Szabolcs Nagy <szabolcs.nagy@arm.com>
* readelf.c (get_aarch64_dynamic_type): New.
(get_dynamic_type): Use above for EM_AARCH64.
(dynamic_section_aarch64_val): New.
(process_dynamic_section): Use above for EM_AARCH64.
*** include/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
Szabolcs Nagy <szabolcs.nagy@arm.com>
* elf/aarch64.h (DT_AARCH64_BTI_PLT): New.
*** ld/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
Szabolcs Nagy <szabolcs.nagy@arm.com>
* NEWS: Document --force-bti.
* emultempl/aarch64elf.em (plt_type, bti_type, OPTION_FORCE_BTI): New.
(PARSE_AND_LIST_SHORTOPTS, PARSE_AND_LIST_OPTIONS): Add force-bti.
(PARSE_AND_LIST_ARGS_CASES): Handle OPTION_FORCE_BTI.
* testsuite/ld-aarch64/aarch64-elf.exp: Add all the tests below.
* testsuite/ld-aarch64/bti-plt-1.d: New test.
* testsuite/ld-aarch64/bti-plt-1.s: New test.
* testsuite/ld-aarch64/bti-plt-2.s: New test.
* testsuite/ld-aarch64/bti-plt-2.d: New test.
* testsuite/ld-aarch64/bti-plt-3.d: New test.
* testsuite/ld-aarch64/bti-plt-4.d: New test.
* testsuite/ld-aarch64/bti-plt-5.d: New test.
* testsuite/ld-aarch64/bti-plt-6.d: New test.
* testsuite/ld-aarch64/bti-plt-7.d: New test.
* testsuite/ld-aarch64/bti-plt-so.s: New test.
* testsuite/ld-aarch64/bti-plt.ld: New test.
This is part of the patch series to add support for BTI and
PAC in AArch64 linker.
This patch implements the following:
1) This extends in the gnu property support in the linker for
AArch64 by defining backend hooks for elf_backend_setup_gnu_properties,
elf_backend_merge_gnu_properties and elf_backend_parse_gnu_properties.
2) It defines AArch64 specific GNU property
GNU_PROPERTY_AARCH64_FEATURE_1_AND and 2 bit for BTI and PAC in it.
3) It also adds support in readelf.c to read and print these new
GNU properties in AArch64.
All these are made according to the new AArch64 ELF ABI
https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4
*** bfd/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* elf-properties.c (_bfd_elf_link_setup_gnu_properties): Exclude
linker created inputs from merge.
* elfnn-aarch64.c (struct elf_aarch64_obj_tdata): Add field for
GNU_PROPERTY_AARCH64_FEATURE_1_AND properties.
(elfNN_aarch64_link_setup_gnu_properties): New.
(elfNN_aarch64_merge_gnu_properties): New.
(elf_backend_setup_gnu_properties): Define for AArch64.
(elf_backend_merge_gnu_properties): Likewise.
* elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Define.
(_bfd_aarch64_elf_parse_gnu_properties): Define.
(_bfd_aarch64_elf_merge_gnu_properties): Define.
* elfxx-aarch64.h (_bfd_aarch64_elf_link_setup_gnu_properties): Declare.
(_bfd_aarch64_elf_parse_gnu_properties): Declare.
(_bfd_aarch64_elf_merge_gnu_properties): Declare.
(elf_backend_parse_gnu_properties): Define for AArch64.
*** binutils/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* readelf.c (decode_aarch64_feature_1_and): New.
(print_gnu_property_note): Add case for AArch64 gnu notes.
*** include/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* elf/common.h (GNU_PROPERTY_AARCH64_FEATURE_1_AND): New.
(GNU_PROPERTY_AARCH64_FEATURE_1_BTI): New.
(GNU_PROPERTY_AARCH64_FEATURE_1_PAC): New.
*** ld/ChangeLog ***
2019-03-13 Sudakshina Das <sudi.das@arm.com>
* NEWS: Document GNU_PROPERTY_AARCH64_FEATURE_1_BTI and
GNU_PROPERTY_AARCH64_FEATURE_1_PAC.
* testsuite/ld-aarch64/aarch64-elf.exp: Add run commands for new tests.
* testsuite/ld-aarch64/property-bti-pac1.d: New test.
* testsuite/ld-aarch64/property-bti-pac1.s: New test.
* testsuite/ld-aarch64/property-bti-pac2.d: New test.
* testsuite/ld-aarch64/property-bti-pac2.s: New test.
* testsuite/ld-aarch64/property-bti-pac3.d: New test.
There should be no AND properties if some input doesn't have them. We
should set IBT and SHSTK properties for -z ibt and -z shstk if needed.
bfd/
PR ld/24322
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Properly
merge GNU_PROPERTY_X86_FEATURE_1_[IBT|SHSTK].
ld/
PR ld/24322
* testsuite/ld-i386/i386.exp: Run PR ld/24322 tests.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr24322a.d: New file.
* testsuite/ld-i386/pr24322b.d: Likewise.
* testsuite/ld-x86-64/pr24322a-x32.d: Likewise.
* testsuite/ld-x86-64/pr24322a.d: Likewise.
* testsuite/ld-x86-64/pr24322b-x32.d: Likewise.
* testsuite/ld-x86-64/pr24322b.d: Likewise.
* testsuite/ld-x86-64/pr24322a.s: Likewise.
* testsuite/ld-x86-64/pr24322b.s: Likewise.
* testsuite/ld-x86-64/pr24322c.s: Likewise.
Skip symbol defined by linker when checking copy reloc on protected
symbol.
bfd/
PR ld/24276
* elf64-x86-64.c (elf_x86_64_check_relocs): Skip symbol defined
by linker when checking copy reloc on protected symbol.
ld/
PR ld/24276
* testsuite/ld-i386/i386.exp: Run PR ld/24276 test.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr24276.dso: New file.
* testsuite/ld-i386/pr24276.warn: Likewise.
* testsuite/ld-x86-64/pr24276.dso: Likewise.
* testsuite/ld-x86-64/pr24276.warn: Likewise.
The syntax we ended up with for -m32 -fPIC calls to __tls_get_addr is
rather weird.
bl __tls_get_addr+0x8000(gd0@tlsgd)@plt
This came about by accident, probably due to requiring the arg reloc
before the call reloc.
Of course the @plt really belongs with __tls_get_addr since it affects
the call rather than the call arg, and it isn't a great deal of
trouble to ensure the relocs are emitted in the correct order. This
patch supports a newer syntax, like so:
bl __tls_get_addr+0x8000@plt(gd0@tlsgd)
gas/
* config/tc-ppc.c (parse_tls_arg): New function, extracted..
(md_assembler): ..from here. Call it after parsing other
suffix modifiers too.
ld/
* testsuite/ld-powerpc/tls32.s: Test new @plt syntax.
Big section alignment requirements between source and destination of a
long call can result in making call range bigger than what's reachable
by the call opcode. Add biggest section alignment of sections between
the call site and call destination to the call distance when making
long call relaxation decision.
2019-02-20 Eric Tsai <erictsai@cadence.com>
bfd/
* elf32-xtensa.c (is_resolvable_asm_expansion): Scan output
sections between the call site and call destination and adjust
call distance by the largest alignment.
ld/
* testsuite/ld-xtensa/call_overflow.d: New test definition.
* testsuite/ld-xtensa/call_overflow1.s: New test source.
* testsuite/ld-xtensa/call_overflow2.s: New test source.
* testsuite/ld-xtensa/call_overflow3.s: New test source.
* testsuite/ld-xtensa/xtensa.exp: Add call_overflow test.
... as a follow-up to commit d981640286 "Run more
ld tests when not native", which replaced by a proper solution the following
mess before present in 'ld/configure.host':
-*-*-gnu*)
- # When creating static executables, we ought to use crt0.o instead of crt1.o,
- # <http://www.gnu.org/software/hurd/open_issues/binutils.html#static>,
- # but the testing infrastructure is not prepared for that. This is not
- # relevant for most tests, and the few remaining ones have been XFAILed.
- HOSTING_CRT0='[...]'
- HOSTING_LIBS='[...]'
ld/
* testsuite/ld-elf/elf.exp: Remove Hurd XFAILs.
Recent gcc commit b4371b277f1e ("[ARC] Enable init_array support")
inhibits DT_"INIT,FINI} in favor of DT_{INIT,FINI}ARRAY.
Even prior to that, it seems ARC port is the only one with this
special DT_INIT/FINI handling in linker emulation. Removing it
doesn't seem to change any uClibc/glibc testsuite results,
so this can RIP anyways.
bfd/
2019-02-01 Vineet Gupta <vgupta@synopsys.com>
* elf32-arc.c: Delete init_str, fini_str
ld/
2019-02-01 Vineet Gupta <vgupta@synopsys.com>
* emultempl/arclinux.em : Delete special INIT/FINI handling.
These targets were all failing due to extra symbols.
pdp11-dec-aout +FAIL: ld-scripts/pr24008
powerpc-aix5.1 +FAIL: ld-scripts/pr24008
powerpc-aix5.2 +FAIL: ld-scripts/pr24008
rs6000-aix4.3.3 +FAIL: ld-scripts/pr24008
rs6000-aix5.1 +FAIL: ld-scripts/pr24008
rs6000-aix5.2 +FAIL: ld-scripts/pr24008
Some fails remain, those I saw were segfaults or assertion fails that
indicate target bugs.
PR ld/24008
* testsuite/ld-scripts/pr24008.d: Pass with extra target
defined symbols.
commit bd7ab16b45
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Feb 13 07:34:22 2018 -0800
x86-64: Generate branch with PLT32 relocation
removed check R_X86_64_PC32 relocation against protected symbols in
shared objects. Since elf_x86_64_check_relocs is called after we
have seen all input files, we can check for PC-relative relocations in
elf_x86_64_check_relocs. We should not allow PC-relative relocations
against protected symbols since address of protected function and
location of protected data may not be in the shared object.
bfd/
PR ld/24151
* elf64-x86-64.c (elf_x86_64_need_pic): Check
SYMBOL_DEFINED_NON_SHARED_P instead of def_regular.
(elf_x86_64_relocate_section): Move PIC check for PC-relative
relocations to ...
(elf_x86_64_check_relocs): Here.
(elf_x86_64_finish_dynamic_symbol): Use SYMBOL_DEFINED_NON_SHARED_P
to check if a symbol is defined in a non-shared object.
* elfxx-x86.h (SYMBOL_DEFINED_NON_SHARED_P): New.
ld/
PR ld/24151
* testsuite/ld-x86-64/pr24151a-x32.d: New file.
* testsuite/ld-x86-64/pr24151a.d: Likewise.
* testsuite/ld-x86-64/pr24151a.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run pr24151a and pr24151a-x32.
PR 24008
* ldexp.h (lang_phase_type): Add lang_fixed_phase_enum.
* ldexp.c (fold_name): Move expld.assign_name check later to
avoid an extra lookup.
(exp_fold_tree_1): When lang_fixed_phase_enum, don't change symbol
values, and don't clear expld.assign_name.
* ldlang.c (lang_map): Set expld.phase to lang_fixed_phase_enum.
(print_assignment): Resolve entire assignment expression.
Don't access symbol u.def unless symbol is defined.
place_orphan handled ELF SHT_REL/SHT_RELA specially, output_rel_find
didn't. This mismatch was a bug and also meant it was possible to
craft an object where ld accessed section->name out of bounds.
PR 24042
* emultempl/elf32.em (output_rel_find): Drop "sec" param. Add
"rela".
(gld${EMULATION_NAME}_place_orphan): Use sh_type to calculate
"rela" param of output_rel_find when ELF. Tidy uses of elfinput.
For PLT expressions, we should subtract the PLT relocation size only for
jump instructions. Since PLT relocations are PC relative, we only allow
"symbol@PLT" in PLT expression.
gas/
PR gas/23997
* config/tc-i386.c (x86_cons): Check for invalid PLT expression.
(md_apply_fix): Subtract the PLT relocation size only for jump
instructions.
* testsuite/gas/i386/reloc32.s: Add test for invalid PLT
expression.
* testsuite/gas/i386/reloc64.s: Likewise.
* testsuite/gas/i386/ilp32/reloc64.s: Likewise.
* testsuite/gas/i386/reloc32.l: Updated.
* testsuite/gas/i386/reloc64.l: Likewise.
* testsuite/gas/i386/ilp32/reloc64.l: Likewise.
ld/
PR gas/23997
* testsuite/ld-i386/i386.exp: Run PR gas/23997 test.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-x86-64/pr23997a.s: New file.
* testsuite/ld-x86-64/pr23997b.c: Likewise.
* testsuite/ld-x86-64/pr23997c.c: Likewise.
Linkers group input note sections with the same name into one output
note section with the same name. One output note section is placed in
one PT_NOTE segment. New linkers merge all input .note.gnu.property
sections into one output .note.gnu.property section with a single
NT_GNU_PROPERTY_TYPE_0 note in a single PT_NOTE segment. Since older
linkers treat input .note.gnu.property section as a generic note section
and just concatenate all input .note.gnu.property sections into one
output .note.gnu.property section without merging them, we may
see one or more NT_GNU_PROPERTY_TYPE_0 notes in PT_NOTE segment, which
are invalid.
GNU_PROPERTY_X86_UINT32_VALID was defined to address this issue such
that linker sets the bit for non-relocatable outputs. But it isn't
sufficient:
1. It doesn't cover generic properties.
2. When -mx86-used-note=yes is passed to x86 assembler, the
GNU_PROPERTY_X86_UINT32_VALID bit is set in GNU_PROPERTY_X86_ISA_1_USED
property in object file and older linkers generate invalid
NT_GNU_PROPERTY_TYPE_0 notes with the GNU_PROPERTY_X86_UINT32_VALID bit
set.
I am proposing the following changes:
1. Add PT_GNU_PROPERTY segment type:
# define PT_GNU_PROPERTY (PT_LOOS + 0x474e553)
which covers .note.gnu.property section.
2. Remove GNU_PROPERTY_X86_UINT32_VALID.
bfd/
PR ld/23900
* elf.c (get_program_header_size): Add a PT_GNU_PROPERTY
segment for NOTE_GNU_PROPERTY_SECTION_NAME.
(_bfd_elf_map_sections_to_segments): Create a PT_GNU_PROPERTY
segment for NOTE_GNU_PROPERTY_SECTION_NAME.
* elfxx-x86.c (_bfd_elf_link_setup_gnu_properties): Don't set
GNU_PROPERTY_X86_UINT32_VALID.
binutils/
PR ld/23900
* readelf.c (get_segment_type): Support PT_GNU_PROPERTY.
(decode_x86_isa): Don't check GNU_PROPERTY_X86_UINT32_VALID.
(decode_x86_feature_1): Likewise.
(decode_x86_feature_2): Likewise.
(print_gnu_property_note): Remove GNU_PROPERTY_X86_UINT32_VALID
check.
* testsuite/binutils-all/i386/empty.d: Updated.
* testsuite/binutils-all/x86-64/empty-x32.d: Likewise.
* testsuite/binutils-all/x86-64/empty.d: Likewise.
* testsuite/binutils-all/i386/pr21231b.s: Change
GNU_PROPERTY_X86_ISA_1_USED bits to 0x7fffffff.
* testsuite/binutils-all/x86-64/pr21231b.s: Likewise.
gas/
PR ld/23900
* config/tc-i386.c (x86_cleanup): Don't set
GNU_PROPERTY_X86_UINT32_VALID.
* testsuite/gas/i386/property-1.s: Change
GNU_PROPERTY_X86_ISA_1_USED bits to 0.
include/
PR ld/23900
* elf/common.h (PT_GNU_PROPERTY): New.
(GNU_PROPERTY_X86_UINT32_VALID): Removed.
ld/
PR ld/23900
* testsuite/ld-elf/elf.exp: Run PR ld/23900 test.
* testsuite/ld-elf/pr23900-1-32.rd: New file.
* testsuite/ld-elf/pr23900-1-64.rd: Likewise.
* testsuite/ld-elf/pr23900-1.d: Likewise.
* testsuite/ld-elf/pr23900-1.s: Likewise.
* testsuite/ld-elf/pr23900-2.s: Likewise.
* testsuite/ld-elf/pr23900-2a.d: Likewise.
* testsuite/ld-elf/pr23900-2b.d: Likewise.
* testsuite/ld-i386/ibt-plt-1.d: Adjusted.
* testsuite/ld-i386/ibt-plt-2c.d: Likewise.
* testsuite/ld-i386/ibt-plt-2d.d: Likewise.
* testsuite/ld-i386/ibt-plt-3d.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-1-x32.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-1.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2c-x32.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2c.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2d-x32.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2c.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-3c-x32.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-3c.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-3d-x32.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-3d.d: Likewise.
* testsuite/ld-i386/pr23372c.d: Expect <None>
for GNU_PROPERTY_X86_ISA_1_USED.
* testsuite/ld-x86-64/pr23372c-x32.d: Likewise.
* testsuite/ld-x86-64/pr23372c.d: Likewise.
* testsuite/ld-x86-64/pr23372d-x32.d: Likewise.
* testsuite/ld-x86-64/pr23372d.d: Likewise.
* testsuite/ld-x86-64/property-x86-5a.s: Change
GNU_PROPERTY_X86_ISA_1_USED bits to 0.
* testsuite/ld-x86-64/property-x86-5b.s: Likewise.
Mark the previous definition from IR object as undefined so that the
generic linker will override it.
bfd/
PR ld/23958
* elflink.c (_bfd_elf_add_default_symbol): Override the previous
definition from IR object.
ld/
PR ld/23958
* testsuite/ld-plugin/lto.exp: Run PR ld/23958 test.
* testsuite/ld-plugin/pr23958.c: New file.
* testsuite/ld-plugin/pr23958.t: Likewise.
For GNU_PROPERTY_X86_COMPAT_ISA_1_USED and GNU_PROPERTY_X86_UINT32_OR_AND
properties, a bit in the output pr_data field is set if it is set in any
relocatable input pr_data fields and this property is present in all
relocatable input files. A missing property implies that its bits have
unknown values. When all bits in the the output pr_data field are zero,
this property should not be removed from output to indicate it has zero
in all bits.
bfd/
PR ld/23372
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Don't remove
empty properties for GNU_PROPERTY_X86_COMPAT_ISA_1_USED and
GNU_PROPERTY_X86_UINT32_OR_AND.
(_bfd_x86_elf_link_fixup_gnu_properties): Likewise.
ld/
PR ld/23372
* testsuite/ld-i386/pr23372a.d: Updated.
* testsuite/ld-i386/pr23372c.d: Likewise.
* testsuite/ld-x86-64/pr23372a-x32.d: Likewise.
* testsuite/ld-x86-64/pr23372a.d: Likewise.
* testsuite/ld-x86-64/pr23372c-x32.d: Likewise.
* testsuite/ld-x86-64/pr23372c.d: Likewise.
Delay setting its alignment until we know it is non-empty. Otherwise an
empty iplt section may change vma and lma of the following sections, which
triggers moving dot of the following section backwards, resulting in a
warning and section lma not being set properly. It later leads to a
"File truncated" error.
bfd/
PR ld/23930
* elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Update
the iplt section alignment if it is non-empty.
(_bfd_x86_elf_link_setup_gnu_properties): Set plt.iplt_alignment
and delay setting the iplt section alignment.
* elfxx-x86.h (elf_x86_plt_layout): Add iplt_alignment.
ld/
PR ld/23930
* testsuite/ld-i386/i386.exp: Run pr23930.
* testsuite/ld-i386/pr23930.d: New file.
* testsuite/ld-x86-64/pr23930-32.t: Likewise.
* testsuite/ld-x86-64/pr23930-x32.d: Likewise.
* testsuite/ld-x86-64/pr23930.d: Likewise.
* testsuite/ld-x86-64/pr23930.t: Likewise.
* testsuite/ld-x86-64/pr23930a.s: Likewise.
* testsuite/ld-x86-64/pr23930b.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run pr23930 and pr23930-x32.
IFUNC resolvers must always be called via their global entry point.
They will be called from ld.so rather than from the local executable.
PR 23937
bfd/
* elf64-ppc.c (write_plt_relocs_for_local_syms): Don't add local
entry offset for ifuncs.
ld/
* testsuite/ld-powerpc/pr23937.d,
* testsuite/ld-powerpc/pr23937.s: New test.
* testsuite/ld-powerpc/powerpc.exp: Run it.
When discovering the statement lists via their header variable
statement_list, file_chain and input_file_chain it can be confusing to
figure out what they are for. They can point to the same initial
statement and the relation between the next field they use is not
obvious from the name.
This commit adds comment for each of those statement list header to
explain what they are for and what next field they use. It also rewrite
the comment for the next fields to simply redirect the reader to the
list header to avoid duplication of documentation.
2018-11-29 Thomas Preud'homme <thomas.preudhomme@linaro.org>
ld/
* ldlang.c (statement_list): Document purpose and what next field it
uses.
(file_chain): Likewise.
(input_file_chain): Likewise.
* ldlang.h (lang_statement_header_type): Document statement list header
the next pointer correspond to.
(lang_statement_header_type): Replace comment for next and
next_real_file field to refer the reader to their corresponding
statement list header.
Accept R_MIPS_HI16, R_MIPS_HIGHER and R_MIPS_HIGHEST relocations and
their compressed counterparts in PIC code where the symbol referred is
absolute. Such an operation is meaningful, because an absolute symbol
effectively is a constant the calculation of the value of which has been
deferred to the static link time, and which is not going to change any
further at the dynamic load time. Therefore there is no need ever to
refuse the use of these relocations with such symbols, as the resulting
run-time value observed by the program will be correct even in PIC code.
This is not the case with R_MIPS_26 and its compressed counterparts,
because the run-time value calculated by the instructions these
relocations are used with depends on the address of the instruction
itself, and that can change according to the base address used by the
dynamic loader. Therefore these relocations have to continue being
rejected in PIC code even with absolute symbols.
This allows successful linking of code that relies on previous linker
behavior up to commit 861fb55ab5 ("Defer allocation of R_MIPS_REL32
GOT slots"), <https://sourceware.org/ml/binutils/2008-08/msg00096.html>,
which introduced the problematic check missing this special exception
for absolute symbols.
bfd/
* elfxx-mips.c (_bfd_mips_elf_check_relocs) <R_MIPS16_HI16>
<R_MIPS_HI16, R_MIPS_HIGHER, R_MIPS_HIGHEST, R_MICROMIPS_HI16>
<R_MICROMIPS_HIGHER, R_MICROMIPS_HIGHEST>: Also accept an
absolute symbol in PIC code.
ld/
* testsuite/ld-mips-elf/pic-reloc-0.d: New test.
* testsuite/ld-mips-elf/pic-reloc-1.d: New test.
* testsuite/ld-mips-elf/pic-reloc-2.d: New test.
* testsuite/ld-mips-elf/pic-reloc-3.d: New test.
* testsuite/ld-mips-elf/pic-reloc-4.d: New test.
* testsuite/ld-mips-elf/pic-reloc-absolute-hi.ld: New test
linker script.
* testsuite/ld-mips-elf/pic-reloc-absolute-lo.ld: New test
linker script.
* testsuite/ld-mips-elf/pic-reloc-ordinary.ld: New test linker
script.
* testsuite/ld-mips-elf/pic-reloc-j.s: New test source.
* testsuite/ld-mips-elf/pic-reloc-lui.s: New test source.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
Similarly to commit 174d0a74a2 ("PowerPC/BFD: Convert `%P: %H:' to
`%H:' in error messages") convert linker relocation error messages to
use `%H:' rather `%P: %H:', removing inconsistent message composition
like:
$ cat reloc-j.s
.text
.globl foo
.ent foo
foo:
j bar
j bar
.end foo
$ cat reloc-j.ld
SECTIONS
{
bar = 0x12345678;
.text : { *(.text) }
/DISCARD/ : { *(*) }
}
$ as -o reloc-j.o reloc-j.s
$ ld -T reloc-j.ld -o reloc-j reloc-j.o
ld: tmpdir/reloc-j.o: in function `foo':
(.text+0x0): relocation truncated to fit: R_MIPS_26 against `bar'
ld: (.text+0x8): relocation truncated to fit: R_MIPS_26 against `bar'
$
where subsequent lines referring to issues within a single function have
the name of the linker executable prepended, but the first one does not.
As noted with the commit referred this breaks a GNU Coding Standard's
requirement that error messages from compilers should look like this:
source-file-name:lineno: message
also quoted in `vfinfo' code handling these specifiers.
Remove the linker name prefix then, making the messages now look like:
$ ld -T reloc-j.ld -o reloc-j reloc-j.o
tmpdir/reloc-j.o: in function `foo':
(.text+0x0): relocation truncated to fit: R_MIPS_26 against `bar'
(.text+0x8): relocation truncated to fit: R_MIPS_26 against `bar'
$
instead.
ld/
* ldmain.c (reloc_overflow): Use `%H:' rather than `%P: %H:'
with `einfo'.
(reloc_dangerous): Likewise.
(unattached_reloc): Likewise.
The fix for PR ld/22263 causes TLS relocations using ADRP to be relaxed
into MOVZ, however this causes issues for the erratum code.
The erratum code scans the input sections looking for ADRP instructions
and notes their location in the stream.
It then later tries to find them again in order to generate the linker
stubs. Due to the relaxation it instead finds a MOVZ and hard aborts.
Since this relaxation is a valid one, and in which case the erratum no
longer applies, it shouldn't abort but instead just continue.
This changes the TLS relaxation code such that when it finds an ADRP and
it relaxes it, it removes the erratum entry from the work list by changing
the stub type into none so the stub is ignored.
The entry is not actually removed as removal is a more expensive operation
and we have already allocated the memory anyway.
The clearing is done for IE->LE and GD->LE relaxations, and a testcase is
added for the IE case. The GD case I believe to be impossible to get together
with the erratum sequence due to the required BL which would break the sequence.
However to cover all basis I have added the guard there as well.
build on native hardware and regtested on
aarch64-none-elf, aarch64-none-elf (32 bit host),
aarch64-none-linux-gnu, aarch64-none-linux-gnu (32 bit host)
Cross-compiled and regtested on
aarch64-none-linux-gnu, aarch64_be-none-linux-gnu
Testcase in PR23940 tested and works as expected now and benchmarks ran on A53
showing no regressions and no issues.
bfd/ChangeLog:
PR ld/23904
* elfnn-aarch64.c (_bfd_aarch64_adrp_p): Use existing constants.
(_bfd_aarch64_erratum_843419_branch_to_stub): Use _bfd_aarch64_adrp_p.
(struct erratum_835769_branch_to_stub_clear_data): New.
(_bfd_aarch64_erratum_843419_clear_stub): New.
(clear_erratum_843419_entry): New.
(elfNN_aarch64_tls_relax): Use it.
(elfNN_aarch64_relocate_section): Pass input_section.
(aarch64_map_one_stub): Handle branch type none as valid.
ld/ChangeLog:
PR ld/23904
* testsuite/ld-aarch64/aarch64-elf.exp: Add erratum843419_tls_ie.
* testsuite/ld-aarch64/erratum843419_tls_ie.d: New test.
* testsuite/ld-aarch64/erratum843419_tls_ie.s: New test.
Glibc commit:
commit a15529fda8d132621328c3fe32997a3d9c55aef4
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon May 14 09:23:55 2018 -0700
i386: Replace PREINIT_FUNCTION@PLT with *%eax in call
Since we have loaded address of PREINIT_FUNCTION into %eax, we can
avoid extra branch to PLT slot.
changed __gmon_start__ relocations in crt1.o from
00000015 0000092b R_386_GOT32X 00000000 __gmon_start__
0000001e 00000904 R_386_PLT32 00000000 __gmon_start__
to
00000015 00000a2b R_386_GOT32X 00000000 __gmon_start__
As the result, .plt.sec section may be generated instead of .plt.got
section, depending on __gmon_start__ relocations.
* testsuite/ld-i386/plt-main-ibt.dd: Accept both .plt.got and
.plt.sec sections.
Add --enable-x86-feature and --disable-x86-feature options to elfedit
to set and clear the IBT and SHSTK bits in program property in ELF
executables and shared objects.
binutils/
* doc/binutils.texi: Document --enable-x86-feature and
--disable-x86-feature options for elfedit.
* elfedit.c: Include "config.h" and <sys/mman.h>.
(enable_x86_features): New.
(disable_x86_features): Likewise.
(update_gnu_property): Likewise.
(elf_x86_feature): Likewise.
(process_file): Call update_gnu_property on ET_EXEC or ET_DYN
file.
(command_line_switch): Add OPTION_ENABLE_X86_FEATURE and
OPTION_DISABLE_X86_FEATURE.
(options): Add--enable-x86-feature and --disable-x86-feature.
(usage): Likewise.
(main): Handle OPTION_ENABLE_X86_FEATURE and
OPTION_DISABLE_X86_FEATURE.
ld/
* testsuite/config/default.exp (ELFEDIT): New.
* testsuite/ld-elf/linux-x86.exp (elfedit_test): New proc.
Run elfedit tests.
* testsuite/ld-elf/x86-feature-1a.rd: New file.
* testsuite/ld-elf/x86-feature-1b.rd: Likewise.
* testsuite/ld-elf/x86-feature-1c.rd: Likewise.
* testsuite/ld-elf/x86-feature-1d.rd: Likewise.
* testsuite/ld-elf/x86-feature-1e.rd: Likewise.
commit e60f4d3bda
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Nov 5 09:01:26 2018 -0800
x86: Disable GOT relaxation with data prefix
Since linker GOT relaxation isn't valid for 16-bit GOT access, we should
disable GOT relaxation with data prefix.
run_dump_test proposes an ld action but when trying to make use of it in
a gas test it gave me some Tcl error. It turns out that it references
the check_shared_lib_support procedure and ld_elf_shared_opt variable
both only available in ld-lib.exp. I've thus moved the procedure in
binutils-common.exp and defined the variable needed in the various
default.exp of testsuite that seem to be using run_dump_test.
Since check_shared_lib_support itself references the ld variable not
defined in binutils-common I've defined it from LD in run_dump_test and
fixed LD and LDFLAGS to be defined as expected by run_dump_test in the
various default.exp of testsuite using run_dump_test.
2018-11-01 Thomas Preud'homme <thomas.preudhomme@linaro.org>
binutils/
* testsuite/config/default.exp: Define LD, LDFLAGS and
ld_elf_shared_opt.
* testsuite/lib/binutils-common.exp (check_shared_lib_support): Moved
from ld-lib.exp.
(run_dump_test): Set ld to $LD.
gas/
* testsuite/config/default.exp: Define LD, LDFLAGS and
ld_elf_shared_opt.
ld/
* testsuite/lib/ld-lib.exp (check_shared_lib_support): Moved to
binutils-common.exp.
The idea of this change is to make -t output useful for users wanting
to package all the object files involved in linking for a bug report.
Something like the following should do the trick.
gcc hello.c -save-temps -Wl,-t | xargs realpath | sort | uniq > files
tar cJf test.tar.xz `cat files`
* ldlang.c (load_symbols): When -t, print file names for script
files and archives.
* ldmain.c (trace_files): Make an int.
(add_archive_element): Print archive elements only with multiple
-t options, or when archive is thin.
* ldmain.h (trace_files): Update.
* ldmisc.c (vfinfo): Don't print both original path and path in
sysroot.
* lexsup.c (parse_args <t>): Increment trace_files.
This output really belongs in ld --verbose.
* ldmain.c (main): Print emulation mode and "deleting executable"
for --verbose, not --trace.
(add_archive_element): Only print "no new IR symbols" for --verbose.
Prepending '/' to absolute paths doesn't gain us much, and results in
the current implementation of --trace emitting silly path-in-sysroot
output, eg.
/lib/ld-linux-x86-64.so.2 (//lib/ld-linux-x86-64.so.2)
* ldmain.c (get_sysroot): Return "" for "--sysroot=/".
For ld -r, we generally set the VMA of sections to zero. This is done
to make the output of ld -r most similar to that output by the
assembler, which generally has sections starting at VMA zero. In some
cases that covers for backend bugs which would mis-handle relocatable
object files with non-zero section VMAs.
This patch fixes a few sections that didn't have zero VMAs for ld -r.
A missing zero on .note.gnu.build-id and .eh_frame_hdr doesn't matter
much since these are linker generated symbols only output on final
link, but it's good to be consistent.
* Makefile.am (ei386beos.c, ei386go32.c): Correct dependencies.
* Makefile.in: Regenerate.
* scripttempl/elf.sc (.note.gnu.build-id, .eh_frame_hdr): Set
address with ${RELOCATING-0}.
* scripttempl/arclinux.sc: Likewise.
* scripttempl/armbpabi.sc: Likewise.
* scripttempl/avr.sc: Likewise.
* scripttempl/elf64hppa.sc: Likewise.
* scripttempl/elf_chaos.sc: Likewise.
* scripttempl/elfarc.sc: Likewise.
* scripttempl/elfxtensa.sc: Likewise.
* scripttempl/mep.sc: Likewise.
* scripttempl/nds32elf.sc: Likewise.
* scripttempl/pru.sc: Likewise.
* scripttempl/elf32msp430.sc: Likewise, and for other sections.
* scripttempl/epiphany_4x4.sc: Similarly.
Commit 91ae256e33 fixes the behavior of ld when `--gc-sections` and
`--gc-keep-exported` are both given on the linker command line. This
updates the ld documentation to suit.
* ld.texi (--gc-sections): Update.
When assigning symbol version, we should hide debug symbols defined in
discarded sections from IR objects so that they can be removed later.
bfd/
PR ld/23818
* elflink.c (_bfd_elf_link_assign_sym_version): Hide symbols
defined in discarded input sections.
ld/
PR ld/23818
* testsuite/ld-plugin/lto.exp: Run PR ld/23818 test.
* testsuite/ld-plugin/pr23818.d: New file.
* testsuite/ld-plugin/pr23818.t: Likewise.
* testsuite/ld-plugin/pr23818a.c: Likewise.
* testsuite/ld-plugin/pr23818b.c: Likewise.
Fixes a couple of ERROR results due to .set difference on alpha.
* testsuite/ld-elf/shared.exp: Don't build pr19073 test on alpha.
* testsuite/ld-elf/pr18720b.c: Don't use .set on alpha.
A symbol root is not needed if --gc-keep-exported is also given.
* ldlang.c (lang_end): Don't error if no --entry or --undefined
is given with -r -gc-sections if --gc-keep-exported.
This patch performs a run-time test that a shared libbfd.so has been
compiled with the same size bfd_vma as that of apps using the library.
On a 32-bit host it is easily possible to have one libbfd.so compiled
to support 64-bit targets (or configured with --enable-64-bit-bfd)
while another only supports 32-bit targets. The two libraries will
have differently sized bfd_vma types, and if the wrong one is loaded
all sorts of weird behaviour might be seen.
bfd/
PR 23534
* init.c (BFD_INIT_MAGIC): Define.
(bfd_init): Return BFD_INIT_MAGIC.
bfd-in2.h: Regenerate.
binutils/
PR 23534
* addr2line.c (main): Exit with fatal error if bfd_init
returns an unexpected value.
* ar.c (main): Likewise.
* dlltool.c (identify_dll_for_implib): Likewise.
* nm.c (main): Likewise.
* objcopy.c (main): Likewise.
* objdump.c (main): Likewise.
* size.c (main): Likewise.
* strings.c (main): Likewise.
* windmc.c (main): Likewise.
* windres.c (main): Likewise.
gas/
PR 23534
* as.c (main): Exit with fatal error if bfd_init returns an
unexpected value.
ld/
PR 23534
* ldmain.c (main): Exit with fatal error if bfd_init returns
an unexpected value.
With
commit 64029e9368
Author: Alan Modra <amodra@gmail.com>
Date: Fri Oct 5 11:40:54 2018 +0930
Separate header PT_LOAD for -z separate-code
there is no need to add a GNU_PROPERTY_X86_ISA_1_USED note to force
program header in in non-code PT_LOAD segment when -z separate-code
is used.
bfd/
PR ld/23428
* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): Don't
add GNU_PROPERTY_X86_FEATURE_2_NEEDED to force program header
in non-code PT_LOAD segment.
ld/
PR ld/23428
* testsuite/ld-i386/property-x86-4a.d: Updated.
* testsuite/ld-x86-64/property-x86-4a-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-4a.d: Likewise.
Properly group orphan note sections. When placing orphan note section
as the first note section, place it after the section before all note
sections.
PR ld/23658
* ldlang.c (lang_insert_orphan): Properly group and place orphan
note sections. Properly handle orphan note section before all
note sections.
* testsuite/ld-elf/pr23658-1.d: Renamed to ...
* testsuite/ld-elf/pr23658-1a.d: This. Updated.
* testsuite/ld-elf/pr23658-1b.d: New test.
* testsuite/ld-elf/pr23658-1c.d: Likewise.
This patch, along with previous patches in the series, supports
putting the ELF file header and program headers in a PT_LOAD without
sections.
Logic governing whether headers a loaded has changed a little: The
primary reason to include headers is now the presence of
SIZEOF_HEADERS in a linker script. However, to support scripts that
may have reserved space for headers by hand, we continue to add
headers whenever the first section address is past the end of headers
modulo page size.
include/
* bfdlink.h (struct bfd_link_info): Add load_phdrs field.
bfd/
* elf-nacl.c (nacl_modify_segment_map): Cope with header PT_LOAD
lacking sections.
* elf.c (_bfd_elf_map_sections_to_segments): Assume file and
program headers are required when info->load_phdrs. Reorganize
code handling program headers. Generate a mapping without
sections just for file and program headers when -z separate-code
would indicate they should be on a different page to the first
section.
ld/
* ldexp.c (fold_name <SIZEOF_HEADERS>): Set link_info.load_phdrs.
* testsuite/ld-elf/loadaddr1.d: Pass -z noseparate-code.
* testsuite/ld-elf/loadaddr2.d: Likewise.
* testsuite/ld-i386/vxworks2.sd: Adjust expected output.
* testsuite/ld-powerpc/vxworks2.sd: Likewise.
* testsuite/ld-elf/overlay.d: Remove spu xfail.
* testsuite/ld-spu/ovl.lnk: Don't use SIZEOF_HEADERS.
* testsuite/ld-tic6x/dsbt-be.ld: Likewise.
* testsuite/ld-tic6x/dsbt-inrange.ld: Likewise.
* testsuite/ld-tic6x/dsbt-overflow.ld: Likewise.
* testsuite/ld-tic6x/dsbt.ld: Likewise.
Some time ago the pr19593 test was xfailed for alpha. This turned out
to be the wrong course of action since the test exposed a bug in
orphan section placement. On alpha, orphan sections were being
inserted before ". = SIZEOF_HEADERS" due to the test having two
assignments, and on alpha, an output section statement from
-Ttext-segment being passed to ld.
* ldlang.c (insert_os_after): Clear ignore_first on assignment to
dot, not any assignment. Clear ignore_first on output section
statement contents too.
* testsuite/ld-elf/pr19539.d: Remove alpha xfail.
Some targets don't set a default interpreter, resulting in an empty
.interp section unless --dynamic-linker is passed to ld. A PT_INTERP
without a path is rather useless.
The testsuite change fixes a failure on microblaze-linux.
bfd/
* elf.c (get_program_header_size): Don't count PT_INTERP if
.interp is empty.
(_bfd_elf_map_sections_to_segments): Don't create PT_INTERP if
.interp is empty.
ld/
* testsuite/ld-elf/pr22423.d: Pass --dynamic-linker to ld.
This patch adds the new instruction and relocation as per proposal:
https://openrisc.io/proposals/ladrp
This is to be added to the spec in an upcoming revision. The new instruction
l.adrp loads the page offset of the current instruction offset by
a 21-bit immediate shifted left 13-bits. This is meant to be used with
a 13-bit lower bit page offset. This allows us to free up the got
register r16.
l.adrp r3, foo
l.ori r4, r3, po(foo)
l.lbz r5, po(foo)(r3)
l.sb po(foo)(r3), r6
The relocations we add are:
- BFD_RELOC_OR1K_PLTA26 For PLT jump relocation with PLT entry
asm: plta() implemented using l.ardp, meaning
no need for r16 (the GOT reg)
- BFD_RELOC_OR1K_GOT_PG21 Upper 21-bit Page offset got address
asm: got()
- BFD_RELOC_OR1K_TLS_GD_PG21 Upper 21-bit Page offset with TLS General
asm: tlsgd() Dynamic calculation
- BFD_RELOC_OR1K_TLS_LDM_PG21 Upper 21-bit Page offset with TLS local
asm: tlsldm() dynamic calculation
- BFD_RELOC_OR1K_TLS_IE_PG21 Upper 21-bit Page offset with TLS Initial
asm: gottp() Executable calculation
- BFD_RELOC_OR1K_PCREL_PG21 Default relocation for disp21 (l.adrp
instructions)
- BFD_RELOC_OR1K_LO13 low 13-bit page offset relocation
asm: po() i.e. mem loads, addi etc
- BFD_RELOC_OR1K_SLO13 low 13-bit page offset relocation
asm: po() i.e. mem stores, with split immediate
- BFD_RELOC_OR1K_GOT_LO13, low 13-bit page offset with GOT calcs
asm: gotpo()
- BFD_RELOC_OR1K_TLS_GD_LO13 Lower 13-bit offset with TLS GD calcs
asm: tlsgdpo()
- BFD_RELOC_OR1K_TLS_LDM_LO13 Lower 13-bit offset with TLS LD calcs
asm: tlsldmpo()
- BFD_RELOC_OR1K_TLS_IE_LO13 Lower 13-bit offset with TLS IE calcs
asm: gottppo()
bfd/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* bfd-in2.h: Regenerated.
* elf32-or1k.c: (or1k_elf_howto_table): Fix formatting for
R_OR1K_PLT26, Add R_OR1K_PCREL_PG21, R_OR1K_GOT_PG21,
R_OR1K_TLS_GD_PG21, R_OR1K_TLS_LDM_PG21, R_OR1K_TLS_IE_PG21,
R_OR1K_LO13, R_OR1K_GOT_LO13, R_OR1K_TLS_GD_LO13, R_OR1K_TLS_LDM_LO13,
R_OR1K_TLS_IE_LO13, R_OR1K_SLO13, R_OR1K_PLTA26.
(or1k_reloc_map): Add BFD_RELOC_OR1K_PCREL_PG21,
BFD_RELOC_OR1K_GOT_PG21, BFD_RELOC_OR1K_TLS_GD_PG21,
BFD_RELOC_OR1K_TLS_LDM_PG21, BFD_RELOC_OR1K_TLS_IE_PG21,
BFD_RELOC_OR1K_LO13, BFD_RELOC_OR1K_GOT_LO13,
BFD_RELOC_OR1K_TLS_GD_LO13, BFD_RELOC_OR1K_TLS_GD_LO13,
BFD_RELOC_OR1K_TLS_LDM_LO13, BFD_RELOC_OR1K_TLS_IE_LO13,
BFD_RELOC_OR1K_SLO13, BFD_RELOC_OR1K_PLTA26.
(elf_or1k_link_hash_table): Add field saw_plta.
(or1k_final_link_relocate): Add value calculations for new relocations.
(or1k_elf_relocate_section): Add section relocations for new
relocations.
(or1k_write_plt_entry): New function.
(or1k_elf_finish_dynamic_sections): Add support for PLTA relocations
using new l.adrp instruction. Cleanup PLT relocation code generation.
* libbfd.h: Regenerated.
* reloc.c: Add BFD_RELOC_OR1K_PCREL_PG21, BFD_RELOC_OR1K_LO13,
BFD_RELOC_OR1K_SLO13, BFD_RELOC_OR1K_GOT_PG21, BFD_RELOC_OR1K_GOT_LO13,
BFD_RELOC_OR1K_PLTA26, BFD_RELOC_OR1K_TLS_GD_PG21,
BFD_RELOC_OR1K_TLS_GD_LO13, BFD_RELOC_OR1K_TLS_LDM_PG21,
BFD_RELOC_OR1K_TLS_LDM_LO13, BFD_RELOC_OR1K_TLS_IE_PG21,
BFD_RELOC_OR1K_TLS_IE_LO13.
cpu/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* or1k.opc (parse_disp26): Add support for plta() relocations.
(parse_disp21): New function.
(or1k_rclass): New enum.
(or1k_rtype): New enum.
(or1k_imm16_relocs): Define new PO and SPO relocation mappings.
(parse_reloc): Add new po(), gotpo() and gottppo() for LO13 relocations.
(parse_imm16): Add support for the new 21bit and 13bit relocations.
* or1korbis.cpu (f-disp26): Don't assume SI.
(f-disp21): New pc-relative 21-bit 13 shifted to right.
(insn-opcode): Add ADRP.
(l-adrp): New instruction.
gas/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* config/tc-or1k.c (or1k_apply_fix): Add BFD_RELOC_OR1K_TLS_GD_PG21,
BFD_RELOC_OR1K_TLS_GD_LO13, BFD_RELOC_OR1K_TLS_LDM_PG21,
BFD_RELOC_OR1K_TLS_LDM_LO13, BFD_RELOC_OR1K_TLS_IE_PG21,
BFD_RELOC_OR1K_TLS_IE_LO13.
* testsuite/gas/or1k/allinsn.s: Add test for l.adrp.
* testsuite/gas/or1k/allinsn.d: Add test results for new
instructions.
* testsuite/gas/or1k/reloc-1.s: Add tests to generate
R_OR1K_PLTA26, R_OR1K_GOT_PG21, R_OR1K_TLS_GD_PG21, R_OR1K_TLS_LDM_PG21,
R_OR1K_TLS_IE_PG21, R_OR1K_LO13, R_OR1K_GOT_LO13, R_OR1K_TLS_GD_LO13,
R_OR1K_TLD_LDM_LO13, R_OR1K_TLS_IE_LO13, R_OR1K_LO13, R_OR1K_SLO13
relocations.
* testsuite/gas/or1k/reloc-1.d: Add relocation results for
tests.
* testsuite/gas/or1k/reloc-2.s: Add negative tests for store to
gotpo().
* testsuite/gas/or1k/reloc-2.l: Add expected error test results.
ld/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* testsuite/ld-or1k/or1k.exp: Add test cases for plt generation.
* testsuite/ld-or1k/plt1.dd: New file.
* testsuite/ld-or1k/plt1.s: New file.
* testsuite/ld-or1k/plt1.x.dd: New file.
* testsuite/ld-or1k/plta1.dd: New file.
* testsuite/ld-or1k/plta1.s: New file.
* testsuite/ld-or1k/pltlib.s: New file.
include/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* elf/or1k.h (elf_or1k_reloc_type): Add R_OR1K_PCREL_PG21,
R_OR1K_GOT_PG21, R_OR1K_TLS_GD_PG21, R_OR1K_TLS_LDM_PG21,
R_OR1K_TLS_IE_PG21, R_OR1K_LO13, R_OR1K_GOT_LO13,
R_OR1K_TLS_GD_LO13, R_OR1K_TLS_LDM_LO13, R_OR1K_TLS_IE_LO13,
R_OR1K_SLO13, R_OR1K_PLTA26.
opcodes/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* or1k-asm.c: Regenerated.
* or1k-desc.c: Regenerated.
* or1k-desc.h: Regenerated.
* or1k-dis.c: Regenerated.
* or1k-ibld.c: Regenerated.
* or1k-opc.c: Regenerated.
* or1k-opc.h: Regenerated.
* or1k-opinst.c: Regenerated.
This patch adds the following target relocations:
- BFD_RELOC_HI16_S High 16-bit relocation, for used with signed
asm: ha() lower.
- BFD_RELOC_HI16_S_GOTOFF High 16-bit GOT offset relocation for local
asm: gotoffha() symbols, for use with signed lower.
- BFD_RELOC_OR1K_TLS_IE_AHI16 High 16-bit TLS relocation with initial
asm: gottpoffha() executable calculation, for use with signed
lower.
- BFD_RELOC_OR1K_TLS_LE_AHI16 High 16-bit TLS relocation for local executable
asm: tpoffha() variables, for use with signed lower.
- BFD_RELOC_OR1K_SLO16 Split lower 16-bit relocation, used with
asm: lo() OpenRISC store instructions.
- BFD_RELOC_OR1K_GOTOFF_SLO16 Split lower 16-bit GOT offset relocation for
asm: gotofflo() local symbols, used with OpenRISC store
instructions.
- BFD_RELOC_OR1K_TLS_LE_SLO16 Split lower 16-bit relocation for TLS local
asm: tpofflo() executable variables, used with OpenRISC store
instructions.
bfd/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
Stafford Horne <shorne@gmail.com>
* bfd-in2.h: Regenerated.
* elf32-or1k.c (N_ONES): New macro.
(or1k_elf_howto_table): Fix R_OR1K_PLT26 to complain on overflow.
Add definitions for R_OR1K_TLS_TPOFF, R_OR1K_TLS_DTPOFF,
R_OR1K_TLS_DTPMOD, R_OR1K_AHI16, R_OR1K_GOTOFF_AHI16,
R_OR1K_TLS_IE_AHI16, R_OR1K_TLS_LE_AHI16, R_OR1K_SLO16,
R_OR1K_GOTOFF_SLO16, R_OR1K_TLS_LE_SLO16.
(or1k_reloc_map): Add entries for BFD_RELOC_HI16_S,
BFD_RELOC_LO16_GOTOFF, BFD_RELOC_HI16_GOTOFF, BFD_RELOC_HI16_S_GOTOFF,
BFD_RELOC_OR1K_TLS_IE_AHI16, BFD_RELOC_OR1K_TLS_LE_AHI16,
BFD_RELOC_OR1K_SLO16, BFD_RELOC_OR1K_GOTOFF_SLO16,
BFD_RELOC_OR1K_TLS_LE_SLO16.
(or1k_reloc_type_lookup): Change search loop to start ad index 0 and
also check results before returning.
(or1k_reloc_name_lookup): Simplify loop to use R_OR1K_max as index
limit.
(or1k_final_link_relocate): New function.
(or1k_elf_relocate_section): Add support for new AHI and SLO
relocations. Use or1k_final_link_relocate instead of generic
_bfd_final_link_relocate.
(or1k_elf_check_relocs): Add support for new AHI and SLO relocations.
* reloc.c: Add new enums for BFD_RELOC_OR1K_SLO16,
BFD_RELOC_OR1K_GOTOFF_SLO16, BFD_RELOC_OR1K_TLS_IE_AHI16,
BFD_RELOC_OR1K_TLS_IE_AHI16, BFD_RELOC_OR1K_TLS_LE_AHI16,
BFD_RELOC_OR1K_TLS_LE_SLO16. Remove unused BFD_RELOC_OR1K_GOTOFF_HI16
and BFD_RELOC_OR1K_GOTOFF_LO16.
* libbfd.h: Regenerated.
cpu/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* or1k.opc: Add RTYPE_ enum.
(INVALID_STORE_RELOC): New string.
(or1k_imm16_relocs): New array array.
(parse_reloc): New static function that just does the parsing.
(parse_imm16): New static function for generic parsing.
(parse_simm16): Change to just call parse_imm16.
(parse_simm16_split): New function.
(parse_uimm16): Change to call parse_imm16.
(parse_uimm16_split): New function.
* or1korbis.cpu (simm16-split): Change to use new simm16_split.
(uimm16-split): Change to use new uimm16_split.
gas/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* testsuite/gas/or1k/allinsn.d (l_ha): Add result for ha() relocation.
* testsuite/gas/or1k/allinsn.s (l_ha): Add test for ha() relocations.
* testsuite/gas/or1k/allinsn.exp: Renamed to or1k.exp.
* testsuite/gas/or1k/or1k.exp: Add reloc-2 list test.
* testsuite/gas/or1k/reloc-1.d: New file.
* testsuite/gas/or1k/reloc-1.s: New file.
* testsuite/gas/or1k/reloc-2.l: New file.
* testsuite/gas/or1k/reloc-2.s: New file.
include/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* elf/or1k.h (elf_or1k_reloc_type): Add R_OR1K_AHI16,
R_OR1K_GOTOFF_AHI16, R_OR1K_TLS_IE_AHI16, R_OR1K_TLS_LE_AHI16,
R_OR1K_SLO16, R_OR1K_GOTOFF_SLO16, R_OR1K_TLS_LE_SLO16.
ld/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* testsuite/ld-or1k/offsets1.d: New file.
* testsuite/ld-or1k/offsets1.s: New file.
* testsuite/ld-or1k/or1k.exp: New file.
opcodes/ChangeLog:
yyyy-mm-dd Richard Henderson <rth@twiddle.net>
* or1k-asm.c: Regenerate.
Since ft32-* and xgate-* use generic linker, SHT_NOTE sections aren't
grouped nor sorted.
PR ld/23658
* testsuite/ld-elf/pr23658-1.d: Also xfail ft32-* and xgate-*.
Add testcases to verify that all SHT_NOTE sections with the same section
alignment are placed in a single PT_NOTE segment.
PR ld/23658
* testsuite/ld-elf/pr23658-1.d: New file.
* testsuite/ld-elf/pr23658-1a.s: Likewise.
* testsuite/ld-elf/pr23658-1b.s: Likewise.
* testsuite/ld-elf/pr23658-1c.s: Likewise.
* testsuite/ld-elf/pr23658-1d.s: Likewise.
* testsuite/ld-elf/pr23658-2.rd: Likewise.
* testsuite/ld-elf/pr23658-3.d: Likewise.
* testsuite/ld-elf/pr23658-3.s: Likewise.
* testsuite/ld-elf/pr23658-3.t: Likewise.
* testsuite/ld-elf/shared.exp: Run PR ld/23658 tests.
To support putting all adjacent SHT_NOTE sections with the same section
alignment into a single PT_NOTE segment, lang_insert_orphan must group
and sort output note sections by section alignments in both output
section list as well as output section statement list.
PR ld/23658
* ldlang.c (lang_insert_orphan): Group and sort output note
sections by section alignments.
This gets rid of the couple of linker failures for visium-elf:
FAIL: ld-elf/pr14156b
FAIL: ld-elf/pr22677
by tweaking the respective testcases. The first tweak is the same as the
one made to the sibling testcase ld-elf/pr14156a.d about one year ago and
the second tweak adds the usual main/start/_start/__start symbols.
ld/
* testsuite/ld-elf/pr14156b.d: Adjust for extra symbols.
* testsuite/ld-elf/pr22677.s: Define main/start/_start/__start.
bfd/
* elfnn-riscv.c (riscv_resolve_pcrel_lo_relocs): Add check for reloc
overflow with addend. Use reloc_dangerous instead of reloc_overflow.
Add strings for the two errors handled here.
(riscv_elf_relocate_section) In case R_RISCV_PCREL_LO12_I, rewrite
comment. Only give error with addend when used with section symbol.
In case bfd_reloc_dangerous, update error string.
ld/
* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run pcrel-lo-addend-2.
* testsuite/ld-riscv/elf/ld-riscv-elf/pcrel-lo-addend-2.d: New.
* testsuite/ld-riscv/elf/ld-riscv-elf/pcrel-lo-addend-2.s: New.
* testsuite/ld-riscv/elf/ld-riscv-elf/pcrel-lo-addend.d: Update name
and error string.
We have not only removed all unsupported and obsolete code, but also supported lost of new features,
including better link-time relaxations and TLS implementations. Besides, the files generated by the
newly assembler and linker usually get higher performance and more optimized code size.
ld * emultempl/nds32elf.em (hyper_relax): New variable.
(nds32_elf_create_output_section_statements):
the parameters of bfd_elf32_nds32_set_target_option
(PARSE_AND_LIST_PROLOGUE, PARSE_AND_LIST_OPTIONS,
PARSE_AND_LIST_ARGS_CASES): Add new option --mhyper-relax.
* emultempl/nds32elf.em (nds32_elf_after_open): Updated.
* emultempl/nds32elf.em (tls_desc_trampoline): New variable.
* (nds32_elf_create_output_section_statements): Updated.
* (nds32_elf_after_parse): Disable relaxations when PIC is enable.
* (PARSE_AND_LIST_PROLOGUE, PARSE_AND_LIST_OPTIONS,
PARSE_AND_LIST_ARGS_CASES): Add new option --m[no-]tlsdesc-trampoline.
include * elf/nds32.h: Remove the unused target features.
* dis-asm.h (disassemble_init_nds32): Declared.
* elf/nds32.h (E_NDS32_NULL): Removed.
(E_NDS32_HAS_DSP_INST, E_NDS32_HAS_ZOL): New.
* opcode/nds32.h: Ident.
(N32_SUB6, INSN_LW): New macros.
(enum n32_opcodes): Updated.
* elf/nds32.h: Doc fixes.
* elf/nds32.h: Add R_NDS32_LSI.
* elf/nds32.h: Add new relocations for TLS.
gas * config/tc-nds32.c: Remove the unused target features.
(nds32_relax_relocs, md_pseudo_table, nds32_elf_record_fixup_exp,
nds32_set_elf_flags_by_insn, nds32_insert_relax_entry,
nds32_apply_fix): Likewise.
(nds32_no_ex9_begin): Removed.
* config/tc-nds32.c (add_mapping_symbol_for_align,
make_mapping_symbol, add_mapping_symbol): New functions.
* config/tc-nds32.h (enum mstate): New.
(nds32_segment_info_type): Likewise.
* configure.ac (--enable-dsp-ext, --enable-zol-ext): New options.
* config.in: Regenerated.
* configure: Regenerated.
* config/tc-nds32.c (nds32_dx_regs):
Set the value according to the configuration.
(nds32_perf_ext, nds32_perf_ext2, nds32_string_ext, nds32_audio_ext):
Likewise.
(nds32_dsp_ext): New variable. Set the value according to the
configuration.
(nds32_zol_ext): Likewise.
(asm_desc, nds32_pseudo_opcode_table): Make them static.
(nds32_set_elf_flags_by_insn): Updated.
(nds32_check_insn_available): Updated.
(nds32_str_tolower): New function.
* config/tc-nds32.c (relax_table): Updated.
(md_begin): Updated.
(md_assemble): Use XNEW macro to allocate space for `insn.info',
and then remember to free it.
(md_section_align): Cast (-1) to ValueT.
(nds32_get_align): Cast (~0U) to addressT.
(nds32_relax_branch_instructions): Updated.
(md_convert_frag): Add new local variable `final_r_type'.
(invalid_prev_frag): Add new bfd_boolean parameter `relax'.
All callers changed.
* config/tc-nds32.c (struct nds32_relocs_pattern): Add `insn' field.
(struct nds32_hint_map): Add `option_list' field.
(struct suffix_name, suffix_table): Remove the unused `pic' field.
(do_pseudo_b, do_pseudo_bal): Remove the suffix checking.
(do_pseudo_la_internal, do_pseudo_pushpopm): Indent.
(relax_hint_bias, relax_hint_id_current): New static variables.
(reset_bias, relax_hint_begin): New variables.
(nds_itoa): New function.
(CLEAN_REG, GET_OPCODE): New macros.
(struct relax_hint_id): New.
(nds32_relax_hint): For .relax_hint directive, we can use `begin'
and `end' to mark the relax pattern without giving exactly id number.
(nds32_elf_append_relax_relocs): Handle the case that the .relax_hint
directives are attached to pseudo instruction.
(nds32_elf_save_pseudo_pattern): Change the second parameter from
instruction's opcode to byte code.
(nds32_elf_build_relax_relation): Add new bfd_boolean parameter
`pseudo_hint'.
(nds32_lookup_pseudo_opcode): Fix the overflow issue.
(enum nds32_insn_type): Add N32_RELAX_ALU1 and N32_RELAX_16BIT.
(nds32_elf_record_fixup_exp, relax_ls_table, hint_map,
nds32_find_reloc_table, nds32_match_hint_insn, nds32_parse_name):
Updated.
* config/tc-nds32.h (MAX_RELAX_NUM): Extend it to 6.
(enum nds32_relax_hint_type): Merge NDS32_RELAX_HINT_LA and
NDS32_RELAX_HINT_LS into NDS32_RELAX_HINT_LALS. Add
NDS32_RELAX_HINT_LA_PLT, NDS32_RELAX_HINT_LA_GOT and
NDS32_RELAX_HINT_LA_GOTOFF.
* config/tc-nds32.h (relax_ls_table): Add floating load/store
to gp relax pattern.
(hint_map, nds32_find_reloc_table): Likewise.
* configure.ac: Define NDS32_LINUX_TOOLCHAIN.
* configure: Regenerated.
* config.in: Regenerated.
* config/tc-nds32.h (enum nds32_ramp): Updated.
(enum nds32_relax_hint_type): Likewise.
* config/tc-nds32.c: Include "errno.h" and "limits.h".
(relax_ls_table): Add TLS relax patterns.
(nds32_elf_append_relax_relocs): Attach BFD_RELOC_NDS32_GROUP on
each instructions of TLS patterns.
(nds32_elf_record_fixup_exp): Updated.
(nds32_apply_fix): Likewise.
(suffix_table): Add TLSDESC suffix.
binutils* testsuite/binutils-all/objcopy.exp: Set the unsupported reloc number
from 215 to 255 for NDS32.
bfd * elf32-nds32.c (nds32_elf_relax_loadstore):
Remove the unused target features.
(bfd_elf32_nds32_set_target_option): Remove the unused parameters.
(nds32_elf_relax_piclo12, nds32_elf_relax_letlslo12,
nds32_elf_relax_letlsadd, nds32_elf_relax_letlsls,
nds32_elf_relax_pltgot_suff, nds32_elf_relax_got_suff
nds32_elf_relax_gotoff_suff, calculate_plt_memory_address,
calculate_plt_offset, calculate_got_memory_address,
nds32_elf_check_dup_relocs): Removed.
All callers changed.
* elf32-nds32.h: Remove the unused macros and defines.
(elf_nds32_link_hash_table): Remove the unused variable.
(bfd_elf32_nds32_set_target_option): Update prototype.
(nds32_elf_ex9_init): Removed.
* elf32-nds32.c (nds32_convert_32_to_16): Updated.
* elf32-nds32.c (HOWTO2, HOWTO3): Define new HOWTO macros
to initialize array nds32_elf_howto_table in any order
without lots of EMPTY_HOWTO.
(nds32_reloc_map): Updated.
* reloc.c: Add BFD_RELOC_NDS32_LSI.
* bfd-in2.h: Regenerated.
* bfd/libbfd.h: Regenerated.
* elf32-nds32.c (nds32_elf_relax_howto_table): Add R_NDS32_LSI.
(nds32_reloc_map): Likewise.
(nds32_elf_relax_flsi): New function.
(nds32_elf_relax_section): Support floating load/store relaxation.
* elf32-nds32.c (NDS32_GUARD_SEC_P, elf32_nds32_local_gp_offset):
New macro.
(struct elf_nds32_link_hash_entry): New `offset_to_gp' field.
(struct elf_nds32_obj_tdata): New `offset_to_gp' and `hdr_size' fields.
(elf32_nds32_allocate_local_sym_info, nds32_elf_relax_guard,
nds32_elf_is_target_special_symbol, nds32_elf_maybe_function_sym):
New functions.
(nds32_info_to_howto_rel): Add BFD_ASSERT.
(bfd_elf32_bfd_reloc_type_table_lookup, nds32_elf_link_hash_newfunc,
nds32_elf_link_hash_table_create, nds32_elf_relocate_section,
nds32_elf_relax_loadstore, nds32_elf_relax_lo12, nds32_relax_adjust_label,
bfd_elf32_nds32_set_target_option, nds32_fag_mark_relax): Updated.
(nds32_elf_final_sda_base): Improve it to find the better gp value.
(insert_nds32_elf_blank): Must consider `len' when inserting blanks.
* elf32-nds32.h (bfd_elf32_nds32_set_target_option): Update prototype.
(struct elf_nds32_link_hash_table): Add new variable `hyper_relax'.
* elf32-nds32.c (elf32_nds32_allocate_dynrelocs): New function.
(create_got_section): Likewise.
(allocate_dynrelocs, nds32_elf_size_dynamic_sections,
nds32_elf_relocate_section, nds32_elf_finish_dynamic_symbol): Updated.
(nds32_elf_check_relocs): Fix the issue that the shared library may
has TEXTREL entry in the dynamic section.
(nds32_elf_create_dynamic_sections): Enable to call readonly_dynrelocs
since the TEXTREL issue is fixed in the nds32_elf_check_relocs.
(nds32_elf_finish_dynamic_sections): Update and add DT_RELASZ
dynamic entry.
(calculate_offset): Remove the unused parameter `pic_ext_target' and
related codes.
All callers changed.
(elf_backend_dtrel_excludes_plt): Disable it temporarily since it
will cause some errors for our test cases.
* elf32-nds32.c (nds32_elf_merge_private_bfd_data): Allow to link the
generic object.
* reloc.c: Add TLS relocations.
* libbfd.h: Regenerated.
* bfd-in2.h: Regenerated.
* elf32-nds32.h (struct section_id_list_t): New.
(elf32_nds32_lookup_section_id, elf32_nds32_check_relax_group,
elf32_nds32_unify_relax_group, nds32_elf_unify_tls_model):
New prototypes.
(elf32_nds32_compute_jump_table_size, elf32_nds32_local_tlsdesc_gotent):
New macro.
(nds32_insertion_sort, bfd_elf32_nds32_set_target_option,
elf_nds32_link_hash_table): Updated.
* elf32-nds32.c (enum elf_nds32_tls_type): New.
(struct elf32_nds32_relax_group_t, struct relax_group_list_t): New.
(elf32_nds32_add_dynreloc, patch_tls_desc_to_ie, get_tls_type,
fls, ones32, list_insert, list_insert_sibling, dump_chain,
elf32_nds32_check_relax_group, elf32_nds32_lookup_section_id,
elf32_nds32_unify_relax_group, nds32_elf_unify_tls_model): New functions.
(elf_nds32_obj_tdata): Add new fields.
(elf32_nds32_relax_group_ptr, nds32_elf_local_tlsdesc_gotent): New macros.
(nds32_elf_howto_table): Add TLS relocations.
(nds32_reloc_map): Likewise.
(nds32_elf_copy_indirect_symbol, nds32_elf_size_dynamic_sections,
nds32_elf_finish_dynamic_symbol, elf32_nds32_allocate_local_sym_info,
nds32_elf_relocate_section, bfd_elf32_nds32_set_target_option,
nds32_elf_check_relocs, allocate_dynrelocs): Updated.
(nds32_elf_relax_section): Call nds32_elf_unify_tls_model.
(dtpoff_base): Rename it to `gottpof' and then update it.
opcodes * nds32-asm.c (operand_fields): Remove the unused fields.
(nds32_opcodes): Remove the unused instructions.
* nds32-dis.c (nds32_ex9_info): Removed.
(nds32_parse_opcode): Updated.
(print_insn_nds32): Likewise.
* nds32-asm.c (config.h, stdlib.h, string.h): New includes.
(LEX_SET_FIELD, LEX_GET_FIELD): Update defines.
(nds32_asm_init, build_operand_hash_table, build_keyword_hash_table,
build_opcode_hash_table): New functions.
(nds32_keyword_table, nds32_keyword_count_table, nds32_field_table,
nds32_opcode_table): New.
(hw_ktabs): Declare it to a pointer rather than an array.
(build_hash_table): Removed.
* nds32-asm.h (enum): Add SYN_INPUT, SYN_OUTPUT, SYN_LOPT,
SYN_ROPT and upadte HW_GPR and HW_INT.
* nds32-dis.c (keywords): Remove const.
(match_field): New function.
(nds32_parse_opcode): Updated.
* disassemble.c (disassemble_init_for_target):
Add disassemble_init_nds32.
* nds32-dis.c (eum map_type): New.
(nds32_private_data): Likewise.
(get_mapping_symbol_type, is_mapping_symbol, nds32_symbol_is_valid,
nds32_add_opcode_hash_table, disassemble_init_nds32): New functions.
(print_insn_nds32): Updated.
* nds32-asm.c (parse_aext_reg): Add new parameter.
(parse_re, parse_re2, parse_aext_reg): Only reduced registers
are allowed to use.
All callers changed.
* nds32-asm.c (keyword_usr, keyword_sr): Updated.
(operand_fields): Add new fields.
(nds32_opcodes): Add new instructions.
(keyword_aridxi_mx): New keyword.
* nds32-asm.h (enum): Add NASM_ATTR_DSP_ISAEXT, HW_AEXT_ARIDXI_MX
and NASM_ATTR_ZOL.
(ALU2_1, ALU2_2, ALU2_3): New macros.
* nds32-dis.c (nds32_filter_unknown_insn): Updated.
binutils* testsuite/binutils-all/compress.exp: Rename second "objcopy
zlib-gnu compress debug sections 3" test to "objcopy zlib-gabi
compress debug sections 3" and use gabi object files instead
of gnu object files.
* testsuite/binutils-all/objcopy.exp: Add suffix to the names
of the "ELF group" tests.
* testsuite/binutils-all/readelf.exp (proc readelf_find_size):
Add an iteration parameter and include it in the name of the
test. Update callers to include an iteration count.
gas * testuite/gas/elf/group0a.d: Add extra details to the test
name.
* testuite/gas/elf/group0b.d: Likewise.
* testuite/gas/elf/group1a.d: Likewise.
* testuite/gas/elf/group1b.d: Likewise.
* testuite/gas/elf/group0b.d: Likewise.
* testuite/gas/elf/section9.d: Likewise.
* testuite/gas/i386/ilp32/lns/lns-common-1.d: Likewise.
* testuite/gas/i386/ilp32/lns/lns-duplicate-1.d: Likewise.
ld * testuite/ld/ld-elf/audit.exp: Differentiate the names of the
two "Run with shared with --audit" tests.
* testuite/ld/ld-elf/compress.exp: Differentiate the zlib
compressed debug output test names.
* testuite/ld/ld-i386/tlspie1.d: Add extra details to the test
name.
* testuite/ld/ld-i386/tlspie2.d: Likewise.
* testuite/ld/ld-size/size.exp: Add missing escapes to the end
of lines in the size-3e test.
* testuite/ld/ld-unique/unique.exp: Differentiate the names of
the two "Checking unique PIC object" tests.
* testuite/ld/ld-x86-64/tlspie1.d: Add extra details to the test
name.
When dereferencing a GOT slot with lgrl or lg we rewrite this using
larl to get rid of the extra memory access. However, we cannot do
this for:
- symbols marked for absolute addressing
- symbols at odd addresses (larl can handle only even addresses)
Fixed with the attached patch.
bfd/ChangeLog:
2018-09-17 Andreas Krebbel <krebbel@linux.ibm.com>
* elf64-s390.c (elf_s390_relocate_section): Prevent rewriting of
GOT accesses with larl for ABS or misaligned symbols.
ld/ChangeLog:
2018-09-17 Andreas Krebbel <krebbel@linux.ibm.com>
* testsuite/ld-s390/gotreloc-1.s: Add tests for ABS and misaligned
symbol. Move variables into data section. Make bar 8 bytes wide.
* testsuite/ld-s390/gotreloc-1.ver: Make misaligned_sym resolve locally.
* testsuite/ld-s390/gotreloc_31-1.dd: Adjust patterns.
* testsuite/ld-s390/gotreloc_64-norelro-1.dd: Likewise.
* testsuite/ld-s390/gotreloc_64-relro-1.dd: Likewise.
ld/testsuite/ld-s12z/
* reloc-ext18-1.d: New file.
* reloc-ext18-1.d: New file.
* reloc-ext18-2.d: New file.
* reloc-ext18.d: New file.
* reloc-ext18.s: New file.
* reloc-ext24.d: New file.
* reloc-ext24.s: New file.
* reloc-ext32.d: New file.
* reloc-ext32.s: New file.
* reloc-opr.d: New file.
* reloc-opr.d: New file.
* reloc-opr.s: New file.
* reloc-pc-rel-7-15.d: New file.
* reloc-pc-rel-7-15.s: New file.
This merges the three versions of run_dump_test. Improved warning
handling versus the old gas version shows up a number of tests that
need their disassembly updating:
arm-linuxeabi +FAIL: ARM v1 instructions
arm-linuxeabi +FAIL: Accepted v8-a with ARMv8.1 AdvSIMD.
arm-linuxeabi +FAIL: bl local instructions for v4t.
arm-linuxeabi +FAIL: UDF
and some that now fail due to detecting assembly warnings:
h8300-elf +FAIL: binutils-all/strip-13
h8300-elf +FAIL: binutils-all/strip-14
h8300-elf +FAIL: binutils-all/strip-15
I've generally kept the union of all run_dump_test features, except
that the ld target aliases "cfi" and "shared" have disappeared, as has
the binutils substitution of $srcdir as $scrdir/$subdir.
binutils/
* testsuite/binutils-all/add-symbol.d: Add "section_subst: no".
* testsuite/binutils-all/elfedit.exp: Don't set tempfile or copyfile.
* testsuite/binutils-all/symbols-1.d,
* testsuite/binutils-all/symbols-2.d,
* testsuite/binutils-all/symbols-3.d,
* testsuite/binutils-all/symbols-4.d: Quote '*' and '!'.
* testsuite/binutils-all/add-empty-section.d,
* testsuite/binutils-all/add-section.d,
* testsuite/binutils-all/elfedit.exp,
* testsuite/binutils-all/note-1.d,
* testsuite/binutils-all/pr23633.d: Add $subdir after $srcdir.
* testsuite/config/default.exp (AS, ASFLAGS): Define.
* testsuite/config/hppa.sed: Handle all common symbols.
* testsuite/lib/binutils-common.exp (run_dump_test): New proc,
merged from three other versions.
(slurp_options, file_contents, set_file_contents): Likewise.
(big_or_little_endian, get_standard_section_names): Likewise.
* testsuite/lib/utils-lib.exp (run_dump_test): Delete.
(slurp_options, proc file_contents): Delete.
(get_standard_section_names): Delete.
gas/
* testsuite/config/default.exp: Make tmpdir.
* testsuite/lib/gas-defs.exp (run_dump_test): Delete.
(get_standard_section_names, slurp_options): Delete.
ld/
* testsuite/ld-d10v/reloc-007.d,
* testsuite/ld-d10v/reloc-008.d,
* testsuite/ld-d10v/reloc-015.d,
* testsuite/ld-d10v/reloc-016.d: Remove "error:".
* testsuite/ld-elf/eh-frame-hdr.d,
* testsuite/ld-elf/eh5.d,
* testsuite/ld-gc/personality.d: Replace "cfi" and "shared" in
target list with appropriate proc.
* testsuite/ld-elf/frame.exp: Use check_shared_lib_support rather
than "istarget shared".
* testsuite/lib/ld-lib.exp (proc big_or_little_endian): Delete.
(run_dump_test, slurp_options, file_contents): Delete.
(set_file_contents, istarget): Delete.
We have three copies of run_dump_test in the testsuite. This is a first
step towards consolidating them.
A few tests use objcopy to convert to verilog or srec output, then
check that output is as expected. Those tests can just as easily use
objdump, keeping the set of dump programs (addr2line, nm, objdump,
readelf, size) separate from utilities under test. That in turn makes
auto-detecting the dump program possible in more places.
binutils/
* testsuite/binutils-all/group-7a.d,
* testsuite/binutils-all/group-7b.d,
* testsuite/binutils-all/group-7c.d,
* testsuite/binutils-all/symbols-1.d,
* testsuite/binutils-all/symbols-2.d,
* testsuite/binutils-all/symbols-3.d,
* testsuite/binutils-all/symbols-4.d: Remove DUMPPROG.
gas/
* testsuite/gas/mri/char.d: Don't objcopy to srec, objdump instead.
* testsuite/gas/mri/float.d: Likewise.
* testsuite/lib/gas-defs.exp (run_dump_test): Remove support
for objcopy as a dump tool.
ld/
* testsuite/ld-elf/interleave-0.d,
* testsuite/ld-elf/interleave-4.d: Don't objcopy to srec,
objdump instead.
* testsuite/ld-gc/all-debug-sections.d,
* testsuite/ld-scripts/provide-4.d,
* testsuite/ld-scripts/provide-5.d,
* testsuite/ld-scripts/provide-6.d,
* testsuite/ld-scripts/provide-7.d,
* testsuite/ld-scripts/provide-8.d,
* testsuite/ld-scripts/segment-start.d: Remove PROG, specify
nm instead.
* testsuite/lib/ld-lib.exp (run_dump_test): Remove support
for objcopy as a dump tool.
Define a new procedure, `run_mips_undefweak_test', and use it to iterate
over several scenarios involving undefined weak symbols resolving to
zero, verifying expected regular MIPS, MIPS16 and microMIPS code, GOT
and dynamic symbol table generation, as well as the setting of the
EI_ABIVERSION field in the ELF file header. In particular ensure that
symbol versioning works and that `__gnu_absolute_zero' gets assigned a
version (any will do) even if it has not been listed for exportation in
a linker version script.
ld/
PR ld/21375
* testsuite/ld-mips-elf/pr21375-abi.hd: New test.
* testsuite/ld-mips-elf/pr21375-noabi.hd: New test.
* testsuite/ld-mips-elf/pr21375.dd: New test.
* testsuite/ld-mips-elf/pr21375h.dd: New test.
* testsuite/ld-mips-elf/pr21375p.dd: New test.
* testsuite/ld-mips-elf/pr21375ph.dd: New test.
* testsuite/ld-mips-elf/pr21375s.dd: New test.
* testsuite/ld-mips-elf/pr21375s-n32.dd: New test.
* testsuite/ld-mips-elf/pr21375s-n64.dd: New test.
* testsuite/ld-mips-elf/pr21375sh.dd: New test.
* testsuite/ld-mips-elf/pr21375sh-n32.dd: New test.
* testsuite/ld-mips-elf/pr21375sh-n64.dd: New test.
* testsuite/ld-mips-elf/pr21375shg.dd: New test.
* testsuite/ld-mips-elf/pr21375sx.dd: New test.
* testsuite/ld-mips-elf/pr21375sxh.dd: New test.
* testsuite/ld-mips-elf/pr21375sm16.dd: New test.
* testsuite/ld-mips-elf/pr21375sm16h.dd: New test.
* testsuite/ld-mips-elf/pr21375su.dd: New test.
* testsuite/ld-mips-elf/pr21375su-n32.dd: New test.
* testsuite/ld-mips-elf/pr21375su-n64.dd: New test.
* testsuite/ld-mips-elf/pr21375suh.dd: New test.
* testsuite/ld-mips-elf/pr21375suh-n32.dd: New test.
* testsuite/ld-mips-elf/pr21375suh-n64.dd: New test.
* testsuite/ld-mips-elf/pr21375sux.dd: New test.
* testsuite/ld-mips-elf/pr21375suxh.dd: New test.
* testsuite/ld-mips-elf/pr21375.gd: New test.
* testsuite/ld-mips-elf/pr21375h.gd: New test.
* testsuite/ld-mips-elf/pr21375p.gd: New test.
* testsuite/ld-mips-elf/pr21375ph.gd: New test.
* testsuite/ld-mips-elf/pr21375s.gd: New test.
* testsuite/ld-mips-elf/pr21375s-n32.gd: New test.
* testsuite/ld-mips-elf/pr21375s-n64.gd: New test.
* testsuite/ld-mips-elf/pr21375sh.gd: New test.
* testsuite/ld-mips-elf/pr21375sh-n32.gd: New test.
* testsuite/ld-mips-elf/pr21375sh-n64.gd: New test.
* testsuite/ld-mips-elf/pr21375shg.gd: New test.
* testsuite/ld-mips-elf/pr21375shl.gd: New test.
* testsuite/ld-mips-elf/pr21375shv.gd: New test.
* testsuite/ld-mips-elf/pr21375sx.gd: New test.
* testsuite/ld-mips-elf/pr21375sxh.gd: New test.
* testsuite/ld-mips-elf/pr21375.sd: New test.
* testsuite/ld-mips-elf/pr21375-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375h.sd: New test.
* testsuite/ld-mips-elf/pr21375h-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375p.sd: New test.
* testsuite/ld-mips-elf/pr21375p-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375ph.sd: New test.
* testsuite/ld-mips-elf/pr21375ph-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375s.sd: New test.
* testsuite/ld-mips-elf/pr21375s-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375s-n32.sd: New test.
* testsuite/ld-mips-elf/pr21375s-n32-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375s-n64.sd: New test.
* testsuite/ld-mips-elf/pr21375s-n64-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375sh.sd: New test.
* testsuite/ld-mips-elf/pr21375sh-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375sh-n32.sd: New test.
* testsuite/ld-mips-elf/pr21375sh-n32-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375sh-n64.sd: New test.
* testsuite/ld-mips-elf/pr21375sh-n64-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375shg.sd: New test.
* testsuite/ld-mips-elf/pr21375shg-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375shl.sd: New test.
* testsuite/ld-mips-elf/pr21375shl-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375shv.sd: New test.
* testsuite/ld-mips-elf/pr21375shv-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375sx.sd: New test.
* testsuite/ld-mips-elf/pr21375sx-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375sxh.sd: New test.
* testsuite/ld-mips-elf/pr21375sxh-irix.sd: New test.
* testsuite/ld-mips-elf/pr21375.ld: New test linker script.
* testsuite/ld-mips-elf/pr21375-xgot.ld: New test linker script.
* testsuite/ld-mips-elf/pr21375.ver: New test version script.
* testsuite/ld-mips-elf/pr21375v.ver: New test version script.
* testsuite/ld-mips-elf/pr21375.s: New test source.
* testsuite/ld-mips-elf/pr21375-mips16.s: New test source.
* testsuite/ld-mips-elf/pr21375-n32.s: New test source.
* testsuite/ld-mips-elf/pr21375-n64.s: New test source.
* testsuite/ld-mips-elf/pr21375-xgot.s: New test source.
* testsuite/ld-mips-elf/mips-elf.exp (run_mips_undefweak_test):
New procedure; run the new tests.
We have an issue in the MIPS backend, with the handling of undefined
hidden and internal weak symbols. References to such symbols are
supposed to resolve to 0 according to the ELF gABI[1]:
"Unresolved weak symbols have a zero value."
and the 64-bit MIPS psABI[2]:
"If a symbol with one of these [hidden or internal] attributes has no
definition within the executable/DSO being linked, then it must be
resolved to allocated space if common, resolved to zero if weak, or an
error reported otherwise."
however if a GOT relocation is used, then a local GOT entry is created
and used to satisfy the reference. Such an entry is then (in DSO and
PIE binaries) subject to the usual load-time relocation, which means a
non-zero value will be returned if the base address is non-zero. This
will defeat the usual run-time sequence like:
void a (void) __attribute__ ((visibility ("hidden"), weak));
void
x (void)
{
if (a)
a ();
}
This can be reproduced with this simple code:
$ cat libtest.c
extern int a __attribute__ ((visibility ("hidden"), weak));
int *
x (void)
{
return &a;
}
$ cat test.c
int *x (void);
int
main (void)
{
printf ("a: %p\n", x ());
return 0;
}
$ gcc -shared -fPIC -o libtest.so libtest.c
$ gcc -o test test.c -Wl,-rpath,$(pwd) libtest.so
$ ./test
a: 0x77184000
$
The usual approach targets take is making all the steps required to
assign a GOT entry for the symbol referred, and then leave its contents
at zero with no dynamic relocation attached, therefore ensuring that the
value does not change at load time. However this is not going to work
with the implicitly relocated GOT the MIPS psABI specifies[3]:
"The dynamic linker relocates the global offset table by first adding
the difference between the base where the shared object is loaded and
the value of the dynamic tag DT_MIPS_BASE_ADDRESS to all local global
offset table entries."
and we cannot therefore use the local GOT part.
And we cannot offhand use the global part either, as the symbol would
then have to be exported and possibly wrongly preempt symbols in other
modules involved in the dynamic load, because as per the ELF gABI[1] we
are not allowed to enter a hidden or internal symbol into the dynamic
symbol table (and then use its associated GOT entry):
"A hidden symbol contained in a relocatable object must be either
removed or converted to STB_LOCAL binding by the link-editor when the
relocatable object is included in an executable file or shared object."
and:
"An internal symbol contained in a relocatable object must be either
removed or converted to STB_LOCAL binding by the link-editor when the
relocatable object is included in an executable file or shared object."
So we have to choose something else.
Our choice is further limited by the need for the reference associated
with the GOT relocation to stay within the signed 16-bit limit from the
GOT pointer base register, while being compliant with the ELF gABI and
the MIPS psABI. However as Alan Modra has observed[4] one possibility
is to edit (relax) the code such that the GOT reference is removed
altogether.
Based on these observations then modify MIPS BFD linker backend code to:
1. Interpret code associated with GOT relocations and relax the usual LW
or LD instructions into a corresponding immediate load operation that
places the value of 0 in the intended register, while leaving the GOT
entry allocated and initialized as usually.
2. Leave any other instructions associated with GOT relocations in place
and instead redirect the reference to a global GOT entry associated
with a special `__gnu_absolute_zero' symbol created for this purpose,
whose value is 0, SHN_ABS section marks it absolute, binding is
global and export class protected, ensuring that the locally provided
value is always used at load time, and that the value is not
relocated by the dynamic loader.
3. Adjust any high-part GOT relocation used, typically associated with
a LUI instruction, accordingly, so that run-time consistency is
maintained, either by resolving to the original entry if the
instruction associated with the corresponding low-part GOT relocation
has been relaxed to an immediate load (in which case the value loaded
with LUI will be overwritten), or by also redirecting the reference
to `__gnu_absolute_zero' to complete the GOT access sequence if that
symbol has been used.
4. Add a target `elf_backend_hide_symbol' hook, for the three MIPS ABIs,
which prevents the `__gnu_absolute_zero' symbol from being forced
local, to ensure that the redirection works and the symbol remains
global/protected with existing linker scripts unchanged.
5. Observing the issue with handling SHN_ABS symbols in the GNU dynamic
loader, covered by glibc PR 19818, set the EI_ABIVERSION field in the
ELF file header produced to 4 (ABI_ABSOLUTE) if `__gnu_absolute_zero'
symbol has been produced and the target configured indicates the GNU
operating system, so that broken versions of the GNU dynamic loader
gracefully reject the file in loading rather than going astray. Keep
EI_ABIVERSION at the original value for other operating systems or if
no `__gnu_absolute_zero' symbol has been made.
The name of the special `__gnu_absolute_zero' has no meaning other than
how a human reader can interpret it, as it is ignored in dynamic loading
in the handling of the scenarios concerned. This is because the symbol
resolves locally, and it's only the symbol's attributes that matter so
that the associated GOT entry remains unchanged at load time.
Therefore the name is somewhat arbitrary, observing however the need to
use the name space reserved for the system so that it does not conflict
with a possible user symbol, and hence the leading underscore, and also
the `gnu' infix to denote a GNU feature. Other implementations wishing
to address the problem in a similar way may choose a different name and
have the solution still work, possibly with a mixture of modules used in
a dynamic having symbols of different names provided, which will however
not interact with each other due to the protected export class.
The symbol can be referred explicitly, however the name is an internal
implementation detail rather than a part of the ABI, and therefore no
specific semantics is guaranteed.
One limitation of this change is that if `__gnu_absolute_zero' has been
already defined, then we do not wipe the old definition and all kinds of
odd behavior can result. This is however like with other symbols we
internally define, such as `_GLOBAL_OFFSET_TABLE_' or `__rld_map', and
therefore left as a possible future enhancement.
As an optimization the relaxation of LW and LD instructions to a load of
immediate zero is always made, even SVR4 PIC code for code that will end
up in a regular (non-PIE) executable, because there is a cache advantage
with the avoidance of a load from the GOT, even if it is otherwise
guaranteed to remain zero. It does not reliably happen though, due to a
symbol exportation issue affecting executables, covered by PR ld/21805.
One existing test case needs to be updated, as it triggers relaxation
introduced with this change and consequently linker output does not
match expectations anymore. As we want to keep the original issue
covered with the test case modify it then to use the LWL instruction in
place of LW, and adjust the output expected accordingly.
References:
[1] "System V Application Binary Interface - DRAFT - 19 October 2010",
The SCO Group, Section "Symbol Table",
<http://www.sco.com/developers/gabi/2012-12-31/ch4.symtab.html>
[2] "64-bit ELF Object File Specification, Draft Version 2.5", MIPS
Technologies / Silicon Graphics Computer Systems, Order Number
007-4658-001, Section 2.5 "Symbol Table", p. 22,
<http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf>
[3] "SYSTEM V APPLICATION BINARY INTERFACE, MIPS RISC Processor
Supplement, 3rd Edition", Section "Global Offset Table", p. 5-10,
<http://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf>
[4] "Undo dynamic symbol state after regular object sym type mismatch",
<https://sourceware.org/ml/binutils/2017-07/msg00265.html>
bfd/
PR ld/21375
* elfxx-mips.h (_bfd_mips_elf_hide_symbol): New prototype.
(_bfd_mips_elf_linker_flags): Update prototype.
* elf32-mips.c (elf_backend_hide_symbol): New macro.
* elf64-mips.c (elf_backend_hide_symbol): Likewise.
* elfn32-mips.c (elf_backend_hide_symbol): Likewise.
* elfxx-mips.c (mips_elf_link_hash_table): Add
`use_absolute_zero' and `gnu_target' members.
(mips_elf_record_global_got_symbol): Call
`_bfd_mips_elf_hide_symbol' rather than
`_bfd_elf_link_hash_hide_symbol'.
(mips_use_local_got_p): Return FALSE if the symbol is absolute.
(mips_elf_obtain_contents): Reorder function.
(mips_elf_nullify_got_load): New function.
(mips_elf_calculate_relocation): Add `contents' parameter.
Nullify GOT loads or if it is not possible, then redirect GOT
relocations to the `__gnu_absolute_zero' symbol, for references
that are supposed to resolve to zero.
(mips_elf_define_absolute_zero): New function.
(_bfd_mips_elf_check_relocs): Prepare for arrangements made in
`mips_elf_calculate_relocation' for references made via the GOT
that are supposed to resolve to zero.
(_bfd_mips_elf_hide_symbol): New function.
(_bfd_mips_elf_linker_flags): Add the `gnu_target' parameter,
set the `gnu_target' member of the MIPS hash table.
(MIPS_LIBC_ABI_ABSOLUTE): New enumeration constant.
(_bfd_mips_post_process_headers): Use it.
ld/
PR ld/21375
* emultempl/mipself.em: Set `gnu_target' according to ${target}.
(mips_create_output_section_statements): Update call to
`_bfd_mips_elf_linker_flags'.
* testsuite/ld-mips-elf/pr21334.s: Use LWL rather than LW.
* testsuite/ld-mips-elf/pr21334.dd: Update accordingly.
Fix an issue with the SEGMENT_START builtin function where its result is
absolute when taken from the default supplied, and section-relative when
taken from a `-T' command-line override. This is against documentation,
inconsistent and unexpected, and with PIE executables gives an incorrect
result with the `__executable_start' symbol.
Make the result of SEGMENT_START always section-relative then.
ld/
* ldexp.c (fold_binary): Always make the result of SEGMENT_START
section-relative.
* testsuite/ld-scripts/segment-start.d: New test.
* testsuite/ld-scripts/segment-start.ld: New test linker script.
* testsuite/ld-scripts/segment-start.s: New test source.
* testsuite/ld-scripts/script.exp: Run the new test.
Avoid a division by zero and thus a linker crash in SEGMENT_START script
builtin function handling, by not checking the value supplied with a
`-T' command-line override against the maximum page size if that has not
been set.
ld/
* ldexp.c (fold_binary): Check that `config.maxpagesize' is
non-zero before using it as a divisor.
Fixes pr23591 test failures on hppa64-hpux and score-elf, and xfails
frv-linux and lm32-linux.
PR ld/23591
* testsuite/ld-elf/pr23591a.s,
* testsuite/ld-elf/pr23591b.s,
* testsuite/ld-elf/pr23591c.s: Don't start directives in first column.
* testsuite/ld-elf/pr23591.d: xfail frv-linux and lm32-linux.
Allow __start___sancov_cntrs as a local symbol.
When there are more than one input sections with the same section name,
SECNAME, linker picks the first one to define __start_SECNAME and
__stop_SECNAME symbols. When the first input section is removed by
comdat group, we need to check if there is still an output section
with section name SECNAME.
PR ld/23591
* ldlang.c (undef_start_stop): Lookup section in output with
the same name.
* testsuite/ld-elf/pr23591.d: New file.
* testsuite/ld-elf/pr23591a.s: Likewise.
* testsuite/ld-elf/pr23591b.s: Likewise.
* testsuite/ld-elf/pr23591c.s: Likewise.
Pass -z separate-code to ld for property-x86-4a tests to generate
the expected .note.gnu.property section. Also run i386 tests for
x86_64-*-elf* targets.
* testsuite/ld-i386/i386.exp: Also run for x86_64-*-elf* targets.
* testsuite/ld-i386/property-x86-4a.d: Pass -z separate-code to
ld.
* testsuite/ld-x86-64/property-x86-4a-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-4a.d: Likewise.
Since x86 assembler may generate .note.gnu.property section and S-records
can't handle .note.gnu.property sections, add -mx86-used-note=no to
S-records tests on ELF/x86 targets to avoid .note.gnu.property section.
* testsuite/ld-srec/srec.exp: Append -Wa,-mx86-used-note=no to
CC and CXX on ELF/x86 targets.
Since only the GNU_PROPERTY_X86_UINT32_VALID bit may be set in data-only
relocatable objects which don't contain any instructions, linker
shouldn't mask out the GNU_PROPERTY_X86_UINT32_VALID bit when merging
GNU_PROPERTY_X86_XXX bits. Otherwise, linker output doesn't contain
GNU_PROPERTY_X86_XXX property with any data-only relocatable inputs.
This patch keeps the GNU_PROPERTY_X86_UINT32_VALID bit and updates
readelf to print "<None>" if GNU_PROPERTY_X86_XXX property only has
the GNU_PROPERTY_X86_UINT32_VALID bit.
bfd/
* elfxx-x86.c (_bfd_x86_elf_parse_gnu_properties): Don't mask
out the GNU_PROPERTY_X86_UINT32_VALID bit.
binutils/
* readelf.c (decode_x86_isa): Print <None> if bitmask only
contains the GNU_PROPERTY_X86_UINT32_VALID bit.
(decode_x86_feature_1): Likewise.
(decode_x86_feature_2): Likewise.
(print_gnu_property_note): Don't mask out the
GNU_PROPERTY_X86_UINT32_VALID bit.
* testsuite/binutils-all/i386/pr21231b.d: Updated.
* testsuite/binutils-all/x86-64/pr21231b.d: Likewise.
gas/
* testsuite/gas/i386/i386.exp: Run property-1 and
x86-64-property-1.
* testsuite/gas/i386/property-1.d: New file.
* testsuite/gas/i386/property-1.s: Likewise.
* testsuite/gas/i386/x86-64-property-1.d: Likewise.
ld/
* testsuite/ld-i386/i386.exp: Run property-x86-5.
* testsuite/ld-i386/property-x86-5.d: New file.
* testsuite/ld-x86-64/property-x86-5-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-5.d: Likewise.
* testsuite/ld-x86-64/property-x86-5a.s: Likewise.
* testsuite/ld-x86-64/property-x86-5b.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run property-x86-5 and
property-x86-5-x32.
git commit 702d16713 broke expressions using CONSTANT(COMMONPAGESIZE)
in ALIGN or SUBALIGN of output section statements, because these
optional fields were evaluated at script parse time and the patch in
question delayed setting of config.commonpagesize. The right thing to
do is keep the tree representation of those fields for later
evaluation.
PR 23571
* ldlang.h (section_alignment): Make it an expression tree.
(subsection_alignment): Likewise.
* ldlang.c (topower): Delete.
(output_section_statement_newfunc): Adjust initialization.
(init_os): Evaluate section_alignment.
(lang_size_sections_1): Likewise.
(size_input_section): Evaluate subsection_alignment.
(lang_enter_output_section_statement): Don't evaluate here.
(lang_new_phdr): Use exp_get_vma rather than exp_get_value_int.
* ldexp.h (exp_get_value_int): Delete.
(exp_get_power): Declare.
* ldexp.c (exp_get_value_int): Delete.
(exp_get_power): New function.
* emultempl/pe.em (place_orphan): Build expression for section
alignment.
* emultempl/pep.em (place_orphan): Likewise.
* testsuite/ld-scripts/pr23571.d,
* testsuite/ld-scripts/pr23571.t: New test.
* testsuite/ld-scripts/align.exp: Run it.
ld/ChangeLog:
* testsuite/ld-mips-elf/mips-elf-flags.exp
(check_ld_support_32bit, check_is_32bit_args): New procedures.
(good_combination, bad_combination): Skip 32bit test if ld
not support 32bit emulations.
We force __ehdr_start to defined in before_allocation, then restore
the type and a union after dynamic symbols have been allocated.
The union contains a number of structs, all starting with a "next"
pointer, and various fields depending on the symbol type. The old
code restored the entire union, but it isn't necessary to restore the
"next" pointer, and in fact it could be wrong if __ehdr_start happened
to be last on the list and some symbols were added before restoring.
* emultempl/elf32.em (before_allocation): Don't restore
__ehdr_start u.*.next pointer.
There is no need to generate .note.gnu.property section with empty
X86_FEATURE_1_AND property. This patch adds fixup_gnu_properties
to ELF linker backend so that x86 backend can remove it.
bfd/
PR ld/23515
* elf-bfd.h (elf_backend_data): Add fixup_gnu_properties.
* elf-properties.c (_bfd_elf_link_setup_gnu_properties): Call
backend fixup_gnu_properties if it isn't NULL. Discard
.note.gnu.property section if all properties have been removed.
* elfxx-target.h (elf_backend_fixup_gnu_properties): New.
(elfNN_bed): Initialize fixup_gnu_properties.
* elfxx-x86.c (_bfd_x86_elf_link_fixup_gnu_properties): New
function.
* elfxx-x86.h (_bfd_x86_elf_link_fixup_gnu_properties): New
prototype.
(elf_backend_fixup_gnu_properties): New.
ld/
PR ld/23515
* testsuite/ld-i386/ibt-plt-2a.d: Updated.
* testsuite/ld-i386/ibt-plt-2b.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2a-x32.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2a.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2b-x32.d: Likewise.
* testsuite/ld-x86-64/ibt-plt-2b.d: Likewise.
Existing properties may be removed during property merging. We avoid
adding X86_ISA_1_NEEDED property only if existing properties won't be
removed.
bfd/
PR ld/23428
* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): Don't
add X86_ISA_1_NEEDED property only if existing properties won't
be removed.
ld/
PR ld/23428
* testsuite/ld-elf/dummy.s: New file.
* testsuite/ld-elf/linux-x86.S: Add X86_FEATURE_1_AND property.
* testsuite/ld-elf/linux-x86.exp: Add dummy.s to pr23428.
Without the GNU_PROPERTY_X86_ISA_1_USED property, all ISAs may be used.
If a bit in the GNU_PROPERTY_X86_ISA_1_USED property is unset, the
corresponding x86 instruction set isn’t used. When merging properties
from 2 input files and one input file doesn't have the
GNU_PROPERTY_X86_ISA_1_USED property, the output file shouldn't have
it neither. This patch removes the GNU_PROPERTY_X86_ISA_1_USED
property if an input file doesn't have it.
This patch replaces the GNU_PROPERTY_X86_ISA_1_USED property with the
GNU_PROPERTY_X86_ISA_1_NEEDED property which is the minimum ISA
requirement.
bfd/
PR ld/23486
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Remove
GNU_PROPERTY_X86_ISA_1_USED if an input file doesn't have it.
(_bfd_x86_elf_link_setup_gnu_properties): Adding the
GNU_PROPERTY_X86_ISA_1_NEEDED, instead of
GNU_PROPERTY_X86_ISA_1_USED, property.
ld/
PR ld/23486
* testsuite/ld-i386/i386.exp: Run PR ld/23486 tests.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr23486a.d: New file.
* testsuite/ld-i386/pr23486b.d: Likewise.
* testsuite/ld-x86-64/pr23486a-x32.d: Likewise.
* testsuite/ld-x86-64/pr23486a.d: Likewise.
* testsuite/ld-x86-64/pr23486a.s: Likewise.
* testsuite/ld-x86-64/pr23486b-x32.d: Likewise.
* testsuite/ld-x86-64/pr23486b.d: Likewise.
* testsuite/ld-x86-64/pr23486b.s: Likewise.
* testsuite/ld-i386/property-3.r: Remove "x86 ISA used".
* testsuite/ld-i386/property-4.r: Likewise.
* testsuite/ld-i386/property-5.r: Likewise.
* testsuite/ld-i386/property-x86-ibt3a.d: Likewise.
* testsuite/ld-i386/property-x86-ibt3b.d: Likewise.
* testsuite/ld-i386/property-x86-shstk3a.d: Likewise.
* testsuite/ld-i386/property-x86-shstk3b.d: Likewise.
* testsuite/ld-x86-64/property-3.r: Likewise.
* testsuite/ld-x86-64/property-4.r: Likewise.
* testsuite/ld-x86-64/property-5.r: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3a-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3a.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3b-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3b.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3a-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3a.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3b-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3b.d: Likewise.
This patch generates EH info for the new _notoc linkage stubs, to
support unwinding from asynchronous signal handlers. Unwinding
through the __tls_get_addr_opt stub was already supported, but that
was just a single stub. With multiple stubs the EH opcodes need to be
emitted and sized when iterating over stubs, so this is done when
emitting and sizing the stub code. Emitting the CIEs and FDEs is done
when sizing the stubs, as we did before in order to have the linker
generated FDEs indexed in .eh_frame_hdr. I moved the final tweaks to
FDEs from ppc64_elf_finish_dynamic_sections to ppc64_elf_build_stubs
simply because it's tidier to be done with them at that point.
bfd/
* elf64-ppc.c (struct map_stub): Delete tls_get_addr_opt_bctrl.
Add lr_restore, eh_size and eh_base.
(eh_advance, eh_advance_size): New functions.
(build_tls_get_addr_stub): Emit EH info for stub.
(ppc_build_one_stub): Likewise for _notoc stubs.
(ppc_size_one_stub): Size EH info for stub.
(group_sections): Init new map_stub fields.
(stub_eh_frame_size): Delete.
(ppc64_elf_size_stubs): Size EH info for stubs. Set up dummy EH
program for stubs.
(ppc64_elf_build_stubs): Reinit new map_stub fields. Set FDE
offset to stub section here..
(ppc64_elf_finish_dynamic_sections): ..rather than here.
ld/
* testsuite/ld-powerpc/notoc.s: Generate some cfi.
* testsuite/ld-powerpc/notoc.d: Adjust.
* testsuite/ld-powerpc/notoc.wf: New file.
* testsuite/ld-powerpc/powerpc.exp: Run "ext" and "notoc" tests
as run_ld_link_tests rather than run_dump_test.
R_PPC64_REL24_NOTOC is used on calls like "bl foo@notoc" to tell the
linker that linkage stubs for PLT calls or long branches can't use r2
for pic addressing. Instead, new stubs that generate pc-relative
addresses are used. One complication is that pc-relative offsets to
the PLT may need to be 64-bit in large programs, in contrast to the
toc-relative addressing used by older PLT linkage stubs where a 32-bit
offset is sufficient until the PLT itself exceeds 2G in size.
.eh_frame info to cover the _notoc stubs is yet to be implemented.
bfd/
* elf64-ppc.c (ADDI_R12_R11, ADDI_R12_R12, LIS_R12),
(ADDIS_R12_R11, ORIS_R12_R12_0, ORI_R12_R12_0),
(SLDI_R12_R12_32, LDX_R12_R11_R12, ADD_R12_R11_R12): Define.
(ppc64_elf_howto_raw): Add R_PPC64_REL24_NOTOC entry.
(ppc64_elf_reloc_type_lookup): Support R_PPC64_REL24_NOTOC.
(ppc_stub_type): Add ppc_stub_long_branch_notoc,
ppc_stub_long_branch_both, ppc_stub_plt_branch_notoc,
ppc_stub_plt_branch_both, ppc_stub_plt_call_notoc, and
ppc_stub_plt_call_both.
(is_branch_reloc): Add R_PPC64_REL24_NOTOC.
(build_offset, size_offset): New functions.
(plt_stub_size): Support plt_call_notoc and plt_call_both.
(ppc_build_one_stub, ppc_size_one_stub): Support new stubs.
(toc_adjusting_stub_needed): Handle R_PPC64_REL24_NOTOC.
(ppc64_elf_size_stubs): Likewise, and new stubs.
(ppc64_elf_build_stubs, ppc64_elf_relocate_section): Likewise.
* reloc.c: Add BFD_RELOC_PPC64_REL24_NOTOC.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
gas/
* config/tc-ppc.c (ppc_elf_suffix): Support @notoc.
(ppc_force_relocation, ppc_fix_adjustable): Handle REL24_NOTOC.
ld/
* testsuite/ld-powerpc/ext.d,
* testsuite/ld-powerpc/ext.s,
* testsuite/ld-powerpc/ext.lnk,
* testsuite/ld-powerpc/notoc.d,
* testsuite/ld-powerpc/notoc.s: New tests.
* testsuite/ld-powerpc/powerpc.exp: Run them.
Not a lot is conveyed by putting _r2off in a stub symbol that can't be
seen by inspecting the stub code or the toc restoring instruction
immediately after a call via such a stub. Also, we don't distinguish
plt_call stub symbols from plt_call_r2save stub symbols, so this patch
makes long branch and plt branch stub symbols consistent with that
decision.
bfd/
* elf64-ppc.c (ppc_build_one_stub): Lose "_r2off" in stub symbols.
ld/
* testsuite/ld-powerpc/elfv2exe.d: Adjust for stub symbol change.
* testsuite/ld-powerpc/tocopt6.d: Likewise.
The .note.gnu.property section should be aligned to 4 bytes for x32.
* testsuite/ld-x86-64/property-x86-3.s: Use ".p2align 2" to
align .note.gnu.property section if __64_bit__ is undefined.
A small rework of the PRU GCC port exposed that CIE data alignment is
erroneously set to 4 for PRU in GAS. In fact PRU stack must be aligned to 1.
Set the macro to -1, to allow output from GCC to be assembled without errors.
Also, while at it, set DWARF2 HW register numbering to follow latest
* config/tc-pru.c (pru_regname_to_dw2regnum): Return the starting HW
byte-register number.
(pru_frame_initial_instructions): Use byte-numbering for FP index.
* config/tc-pru.h (DWARF2_DEFAULT_RETURN_COLUMN): Use number from
latest GCC.
(DWARF2_CIE_DATA_ALIGNMENT): Set to -1.
Add a testcase to limit open files to 16 for AR with plugin. Before
commit 103da91bc0
Author: Nick Clifton <nickc@redhat.com>
Date: Wed Aug 1 14:34:41 2018 +0100
Close resource leaks in the BFD library's plugin handler.
it failed with:
../binutils/ar: tmpdir/pr23460f.o: plugin needed to handle lto object
PR binutils/23460
* testsuite/ld-plugin/lto.exp: Run the PR binutils/23460 test.
* testsuite/ld-plugin/pr23460a.c: New file.
* testsuite/ld-plugin/pr23460b.c: Likewise.
* testsuite/ld-plugin/pr23460c.c: Likewise.
* testsuite/ld-plugin/pr23460d.c: Likewise.
* testsuite/ld-plugin/pr23460e.c: Likewise.
* testsuite/ld-plugin/pr23460f.c: Likewise.
The modified test failed on some powerpc targets due to differences in
default hash style. If the default hash style is both, then more
sections are created, bumping section ids. Section id is used in stub
symbols and although the test is careful to not depend on id in
labels, the stub hash traversal order changes when stub names change.
That lead to the stubs being emitted in a different order and thus not
matching expected output.
* testsuite/ld-powerpc/powerpc.exp: Run tlsopt5 with hash-style
specified.
This patch sets stub_offset in ppc_size_one_stub rather than in
ppc_build_one_stub. That allows the plt stub alignment to be done in
just ppc_size_one_stub rather than both functions. The patch also
corrects the place where the alignment was done, fixing a possible
error in .eh_frame data, and tidies some offset calculations.
bfd/
* elf64-ppc.c (plt_stub_pad): Delay plt_stub_size call until needed.
(ppc_build_one_stub): Don't set stub_offset, instead assert that
it is sane. Don't adjust stub_offset for alignment. Adjust size
calculation. Use "targ" temp when calculating offsets.
(ppc_size_one_stub): Set stub_offset here. Use "targ" temp when
calculating offsets. Adjust for alignment before setting
tls_get_addr_opt_bctrl.
ld/
* testsuite/ld-powerpc/powerpc.exp: Run tlsopt5 with plt alignment.
* testsuite/ld-powerpc/tlsopt5.s: Add extra call.
* testsuite/ld-powerpc/tlsopt5.wf: Adjust expected output.
* testsuite/ld-powerpc/tlsopt5.d: Likewise.
This patch series is a new binutils port for C-SKY processors, including support for both the V1 and V2 processor variants. V1 is derived from the MCore architecture while V2 is substantially different, with mixed 16- and 32-bit instructions, a larger register set, a different (but overlapping) ABI, etc. There is support for bare-metal ELF targets and Linux with both glibc and uClibc.
This code is being contributed jointly by C-SKY Microsystems and Mentor Graphics. C-SKY is responsible for the technical content and has proposed Lifang Xia and Yunhai Shang as port maintainers. (Note that C-SKY does have a corporate copyright assignment on file with the FSF.) Mentor Graphics' role has been cleaning up the code, adding documentation and additional test cases, etc, to address issues we anticipated reviewers would complain about.
bfd * Makefile.am (ALL_MACHINES, ALL_MACHINES_CFILES): Add C-SKY.
(BFD32_BACKENDS, BFD_BACKENDS_CFILES): Likewise.
* Makefile.in: Regenerated.
* archures.c (enum bfd_architecture): Add bfd_arch_csky and
related bfd_mach defines.
(bfd_csky_arch): Declare.
(bfd_archures_list): Add C-SKY.
* bfd-in.h (elf32_csky_build_stubs): Declare.
(elf32_csky_size_stubs): Declare.
(elf32_csky_next_input_section: Declare.
(elf32_csky_setup_section_lists): Declare.
* bfd-in2.h: Regenerated.
* config.bfd: Add C-SKY.
* configure.ac: Likewise.
* configure: Regenerated.
* cpu-csky.c: New file.
* elf-bfd.h (enum elf_target_id): Add C-SKY.
* elf32-csky.c: New file.
* libbfd.h: Regenerated.
* reloc.c: Add C-SKY relocations.
* targets.c (csky_elf32_be_vec, csky_elf32_le_vec): Declare.
(_bfd_target_vector): Add C-SKY target vector entries.
binutils* readelf.c: Include elf/csky.h.
(guess_is_rela): Handle EM_CSKY.
(dump_relocations): Likewise.
(get_machine_name): Likewise.
(is_32bit_abs_reloc): Likewise.
include * dis-asm.h (csky_symbol_is_valid): Declare.
* opcode/csky.h: New file.
opcodes * Makefile.am (TARGET_LIBOPCODES_CFILES): Add csky-dis.c.
* Makefile.in: Regenerated.
* configure.ac: Add C-SKY.
* configure: Regenerated.
* csky-dis.c: New file.
* csky-opc.h: New file.
* disassemble.c (ARCH_csky): Define.
(disassembler, disassemble_init_for_target): Add case for ARCH_csky.
* disassemble.h (print_insn_csky, csky_get_disassembler): Declare.
gas * Makefile.am (TARGET_CPU_CFILES): Add entry for C-SKY.
(TARGET_CPU_HFILES, TARGET_ENV_HFILES): Likewise.
* Makefile.in: Regenerated.
* config/tc-csky.c: New file.
* config/tc-csky.h: New file.
* config/te-csky_abiv1.h: New file.
* config/te-csky_abiv1_linux.h: New file.
* config/te-csky_abiv2.h: New file.
* config/te-csky_abiv2_linux.h: New file.
* configure.tgt: Add C-SKY.
* doc/Makefile.am (CPU_DOCS): Add entry for C-SKY.
* doc/Makefile.in: Regenerated.
* doc/all.texi: Set CSKY feature.
* doc/as.texi (Overview): Add C-SKY options.
(Machine Dependencies): Likewise.
* doc/c-csky.texi: New file.
* testsuite/gas/csky/*: New test cases.
ld * Makefile.am (ALL_EMULATION_SOURCES): Add C-SKY emulations.
(ecskyelf.c, ecskyelf_linux.c): New rules.
* Makefile.in: Regenerated.
* configure.tgt: Add C-SKY.
* emulparams/cskyelf.sh: New file.
* emulparams/cskyelf_linux.sh: New file.
* emultempl/cskyelf.em: New file.
* gen-doc.texi: Add C-SKY.
* ld.texi: Likewise.
(Options specific to C-SKY targets): New section.
* testsuite/ld-csky/*: New tests.
gold * layout.cc (section_name_mapping): Add an entry for
.gnu.build.attributes.
ld * scripttempl/elf.sc: Place .gnu.build.attributes sections with
other read-only sections.
This adds support for ".localentry 1", a new st_other
STO_PPC64_LOCAL_MASK encoding that signifies a function with a single
entry point like ".localentry 0", but unlike a ".localentry 0"
function does not preserve r2.
include/
* elf/ppc64.h: Specify byte offset to local entry for values
of two to six in STO_PPC64_LOCAL_MASK. Clarify r2 return
value for such functions when entering via global entry point.
Specify meaning of a value of one in STO_PPC64_LOCAL_MASK.
bfd/
* elf64-ppc.c (ppc64_elf_size_stubs): Use a ppc_stub_long_branch_r2off
for calls to symbols with STO_PPC64_LOCAL_MASK bits set to 1.
gas/
* config/tc-ppc.c (ppc_elf_localentry): Allow .localentry values
of 1 and 7 to directly set value into STO_PPC64_LOCAL_MASK bits.
ld/testsuite/
* ld-powerpc/elfv2.s: Add .localentry f5,1 testcase.
* ld-powerpc/elfv2exe.d: Update.
* ld-powerpc/elfv2so.d: Update.
One of the ill effects of ld -r is to mash together sections. That
can result in reduced icache performance at runtime due to unexpected
movement of code. Another problem is that sections can become too
large to link on targets that have limited relative addressing. ld -r
--relax attempts to overcome the large section problem for branches by
inserting trampolines, but the powerpc support added lots of
unnecessary trampolines. This patch trims them somewhat.
bfd/
* elf32-ppc.c (ppc_elf_relax_section): Ignore common or undef locals.
Avoid trashing toff with added when used as a symbol index.
Ignore R_PPC_PLTREL24 addends in unused example code. Avoid
creating unnecessary fixups when relocatable.
ld/
* testsuite/ld-powerpc/big.s: New file.
* testsuite/ld-powerpc/relaxrl.d: New test.
* testsuite/ld-powerpc/powerpc.exp: Run new test.
* testsuite/ld-powerpc/relaxr.d: Adjust.
Three tests with individual .exp files can be implemented in less
verbose way with run_dump_test infrastructure. Convert them.
ld/
2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
* testsuite/ld-xtensa/coalesce.d: New file.
* testsuite/ld-xtensa/coalesce.exp: Remove file.
* testsuite/ld-xtensa/diff_overflow.d: New file.
* testsuite/ld-xtensa/diff_overflow.exp: Remove file.
* testsuite/ld-xtensa/lcall.d: New file.
* testsuite/ld-xtensa/lcall.exp: Remove file.
* testsuite/ld-xtensa/xtensa.exp (coalesce, diff_overflow)
(lcall): New tests.
ld/
2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
* testsuite/ld-xtensa/relax-static-defs.s: New file.
* testsuite/ld-xtensa/relax-static-local-pie.d: New file.
* testsuite/ld-xtensa/relax-static-local-shared.d: New file.
* testsuite/ld-xtensa/relax-static-local.s: New file.
* testsuite/ld-xtensa/relax-static-pie.d: New file.
* testsuite/ld-xtensa/relax-static-shared.d: New file.
* testsuite/ld-xtensa/relax-static.s: New file.
* testsuite/ld-xtensa/relax-undef-weak-local-pie.d: New file.
* testsuite/ld-xtensa/relax-undef-weak-local-shared.d: New file.
* testsuite/ld-xtensa/relax-undef-weak-local.s: New file.
* testsuite/ld-xtensa/relax-undef-weak-pie.d: New file.
* testsuite/ld-xtensa/relax-undef-weak-shared.d: New file.
* testsuite/ld-xtensa/relax-undef-weak.s: New file.
* testsuite/ld-xtensa/xtensa.exp: New file.
xtensa.exp in fact only checks xtensa*-*-linux* configurations, rename
it to xtensa-linux.exp to allow xtensa.exp to check xtensa*-*-*.
ld/
2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
* testsuite/ld-xtensa/xtensa.exp: Rename to xtensa-linux.exp.
PowerPC64 fails here due to emitting a warning about discarded dynamic
relocations. That's a good thing, since accidentally discarding
dynamic relocations will likely result in a non-working binary.
* testsuite/ld-elf/reloc-discard-warn.d: New.
* testsuite/ld-elf/reloc-discard.d: Skip test on PowerPC64.
On many targets, like x86, .rel.dyn/.rela.dyn section is combined from
different .rel/.rela sections by -z combreloc. To discard dynamic
relocation section, we need to discard .rel.* and .rela.* sections
instead of .rel.dyn and .rela.dyn sections.
Note: This test fails for targets which issue a warning when dynamic
section is discarded.
* testsuite/ld-elf/reloc-discard.ld: Discard .rel.* and .rela.*
sections instead of .rel.dyn and .rela.dyn sections.
When -z separate-code, which is enabled by default for Linux/x86, is
used to create executable, ld won't place any data in the code-only
PT_LOAD segment. If there are no data sections placed before the
code-only PT_LOAD segment, the program headers won't be mapped into
any PT_LOAD segment. When the executable tries to access it (based
on the program header address passed in AT_PHDR), it will lead to
segfault. This patch inserts a GNU_PROPERTY_X86_ISA_1_USED note if
there may be no data sections before the text section so that the
first PT_LOAD segment won't be code-only and will contain the program
header.
Testcases are adjusted to either pass "-z noseparate-code" to ld or
discard the .note.gnu.property section. A Linux/x86 run-time test is
added.
bfd/
PR ld/23428
* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): If the
separate code program header is needed, make sure that the first
read-only PT_LOAD segment has no code by adding a
GNU_PROPERTY_X86_ISA_1_USED note.
ld/
PR ld/23428
* testsuite/ld-elf/linux-x86.S: New file.
* testsuite/ld-elf/linux-x86.exp: Likewise.
* testsuite/ld-elf/pr23428.c: Likewise.
* testsuite/ld-elf/sec64k.exp: Pass "-z noseparate-code" to ld
for Linux/x86 targets.
* testsuite/ld-i386/abs-iamcu.d: Likewise.
* testsuite/ld-i386/abs.d: Likewise.
* testsuite/ld-i386/pr12718.d: Likewise.
* testsuite/ld-i386/pr12921.d: Likewise.
* testsuite/ld-x86-64/abs-k1om.d: Likewise.
* testsuite/ld-x86-64/abs-l1om.d: Likewise.
* testsuite/ld-x86-64/abs.d: Likewise.
* testsuite/ld-x86-64/pr12718.d: Likewise.
* testsuite/ld-x86-64/pr12921.d: Likewise.
* testsuite/ld-linkonce/zeroeh.ld: Discard .note.gnu.property
section.
* testsuite/ld-scripts/print-memory-usage.t: Likewise.
* testsuite/ld-scripts/size-2.t: Likewise.
* testsuite/lib/ld-lib.exp (run_ld_link_exec_tests): Use ld
to create executable if language is "asm".
This patch fixes some ifunc testisms after H.J. Lu's patch to enable the
use of IFUNC pointers in position dependent code for binutils. See PR
LD/23169 in binutils bugzilla.
The aarch64 ifunc error message test was changed to no longer expect
this error message as this is now an accepted combination. This patch
also disables the executable tests added by H.J. Lu for aarch64, just as
Alan Modra did with his patch, as these tests only seem to work on some
architectures.
ld/ChangeLog:
2018-07-19 Andre Vieira <andre.simoesdiasvieira@arm.com>
* testsuite/ld-aarch64/ifunc-9.d: Remove no longer expected error.
* testsuite/ld-ifunc/ifunc.exp: Disable tests for aarch64.
Fix a crash that occurs in `_bfd_mips_elf_finish_dynamic_sections' if a
dynamic relocation section has been created, but marked to be discarded
by an assignment to the /DISCARD/ output section in a linker script.
In that case the output section is the absolute section, which has no
ELF section data attached, so trying to set its `sh_size' parameter
causes a null pointer dereference.
This is only done as the value for the DT_RELSZ dynamic entry is being
set, so fix the problem by not creating DT_REL, DT_RELSZ or DT_RELENT
dynamic entries in the first place if the dynamic relocation section
will not be output, as with no dynamic relocation data present these
would not serve their purpose anyway.
Add a generic ELF test case to verify that no dynamic relocation data is
reported in the dynamic segment.
bfd/
* elfxx-mips.c (_bfd_mips_elf_size_dynamic_sections): Do not
create DT_REL, DT_RELSZ or DT_RELENT dynamic entries if the
dynamic relocation section will be discarded from output.
(_bfd_mips_elf_finish_dynamic_sections) <DT_RELSZ>: Assert that
the dynamic relocation section will be retained in output.
ld/
* testsuite/ld-elf/reloc-discard.d: New test.
* testsuite/ld-elf/reloc-discard.ld: New test linker script.
* testsuite/ld-elf/reloc-discard.s: New test source.
Currently on S/390 the .got.plt always comes first which prevents the
GNU_RELRO segment from being extended across the non-plt GOT entries.
Just swapping both unfortunately is not that simple since our ABI
requires the _GLOBAL_OFFSET_TABLE_ symbol to point to the very
beginning of the entire GOT. Of the 3 magic GOT entries the first is
accessed via got pointer while second and third are being accessed via
DT_PLTGOT. In order to keep them together we make DT_PLTGOT to point
to the .got instead of .got.plt. However, this violates an assumption
in the dynamic linker prelink undo code about the GOTPLT entries
starting at DT_PLTGOT + 3. We got rid of this requirement with a
Glibc patch already in version 2.24:
https://sourceware.org/ml/libc-alpha/2016-06/msg01302.html
So the S/390 relro GOT layout will look like this with this patch:
+----------------------------------+
|got[0]: DYNAMIC | <--- _GLOBAL_OFFSET_TABLE_ == DT_PLTGOT .got
|got[1]: link_map parm |
|got[2]: &_dl_runtime_resolve |
+----------------------------------+
| | non-plt GOT entries
| |
| |
+----------------------------------+
| | <--- .gotplt, PLT GOT entries
| |
| |
| |
+----------------------------------+
The patch detects the current layout in size_dynamic_section in order
to deal also with linker scripts not generated by this ld version.
With partial relro enabled we pick a linker script where .got and
.got.plt are swapped which then triggers the rest of the logic.
ld/ChangeLog:
2018-07-18 Andreas Krebbel <krebbel@linux.ibm.com>
* emulparams/elf64_s390.sh: Define GENERATE_RELRO_SCRIPT and
SEPARATE_GOTPLT.
* testsuite/ld-s390/gotreloc_64-relro-1.dd: New test.
* testsuite/ld-s390/gotreloc_64-norelro-1.dd: Renamed from ...
* testsuite/ld-s390/gotreloc_64-1.dd: ... this.
* testsuite/ld-s390/s390.exp: Split the GOT testcase into two.
bfd/ChangeLog:
2018-07-18 Andreas Krebbel <krebbel@linux.ibm.com>
* elf-s390-common.c (s390_gotplt_after_got_p): New function.
(s390_got_pointer): New function.
(s390_got_offset): New function.
(s390_gotplt_offset): New function.
* elf64-s390.c (allocate_dynrelocs): Adjust comment.
(elf_s390_size_dynamic_sections): Move space for magic GOT entries
from .got.plt to .got if necessary and pick the right location for
_GLOBAL_OFFSET_TABLE_.
(elf_s390_relocate_section): Use the wrapper functions from
elf-s390-common.c to deal with both possible layouts (either .got
or .got.plt first).
(elf_s390_finish_dynamic_sections): Likewise.
(elf_s390_finish_dynamic_symbol): Make the location of the GOT
magic entries conditional.
With this patch dedicated linker scripts can be generated for partial
relro triggered by defining GENERATE_RELRO_SCRIPT in the target
specific scripts.
This is necessary for e.g. S/390 where usually the .got.plt comes
first and prevents the relro segment from being extended across the
non-plt GOT entries.
The patch started with the work from Marcin taken from the mwk user
branches. However, the patch needed substantial changes due to the
'separate code' feature which got committed in the meantime.
ld/ChangeLog:
2018-07-18 Andreas Krebbel <krebbel@linux.ibm.com>
Marcin Kościelnicki <koriakin@0x04.net>
* emultempl/elf32.em: Add code to pick dedicated linker scripts
for partial relro.
* genscripts.sh: Generate dedicated linker scripts for partial relro.
It is usually possible to tell absolute and ordinary symbols apart in
BFD throughout the link, by checking whether the section that owns the
symbol is absolute or not.
That however does not work for ordinary symbols defined in a linker
script outside an output section statement. Initially such symbols are
entered into to the link hash as absolute symbols, owned by the absolute
section. A flag is set in the internal linker expression defining such
symbols to tell the linker to convert them to section-relative ones in
the final phase of the link. That flag is however not accessible to BFD
linker code, including BFD target code in particular.
Add a flag to the link hash then to copy the information held in the
linker expression. Define a macro, `bfd_is_abs_symbol', for BFD code to
use where determining whether a symbol is absolute or ordinary is
required before the final link phase.
This macro will correctly identify the special `__ehdr_start' symbol as
ordinary throughout link, for example, even though early on it will be
assigned to the absolute section. Of course this does not let BFD code
identify what the symbol's ultimate section will be before the final
link phase has converted this symbol (in `update_definedness').
include/
* bfdlink.h (bfd_link_hash_entry): Add `rel_from_abs' member.
bfd/
* linker.c (bfd_is_abs_symbol): New macro.
* bfd-in2.h: Regenerate.
ld/
* ldexp.c (exp_fold_tree_1) <etree_assign, etree_provide>
<etree_provided>: Copy expression's `rel_from_abs' flag to the
link hash.
Complement commit 500c05ddbe ("MIPS/ld/testsuite: Limit export class
call reloc tests to DSO targets") and also check for target's shared
library support in determining whether to run reloc 6 tests, which
require it. No changes in results as all targets currently enabled for
NewABI testing support shared libraries.
ld/
* testsuite/ld-mips-elf/mips-elf.exp: Limit reloc 6 tests to
shared library targets.
Correct an issue with commit 0f20cc3522 ("TLS support for MIPS"),
<https://sourceware.org/ml/binutils/2005-02/msg00607.html>, where a
condition used to determine whether to use a dynamic symbol for GD, LD
and IE TLS dynamic relocations against a symbol that has been defined
locally has been incorrectly reversed.
It's executables rather than dynamic shared objects where no symbol is
required, because such symbols cannot be preempted and therefore their
values (thread pointer offsets) are fixed at the static link time as is
the associated module ID of the main executable, so the original
condition should have been `shared' instead of `!shared'. This wrong
condition was then later converted from `!shared' to `!bfd_link_pic',
with commit 0e1862bb40 ("Add output_type to bfd_link_info").
Use the correct `bfd_link_dll' condition then, and adjust code for the
dynamic symbol index possibly being -1 as with symbols that have been
forced local, removing unnecessary dynamic relocations from dynamic
regular executables. PIE executables are unaffected as the existing
condition excluded them by chance due to the conversion mentioned above.
Adjust test cases accordingly.
bfd/
* elfxx-mips.c (mips_tls_got_relocs): Use `bfd_link_dll' rather
than `!bfd_link_pic' in determining the dynamic symbol index.
Avoid the index of -1.
(mips_elf_initialize_tls_slots): Likewise. Flatten code by
moving `dyn' to the beginning of the function block.
ld/
* testsuite/ld-mips-elf/tlsdyn-o32.d: Update test for dynamic
relocation removal.
* testsuite/ld-mips-elf/tlsdyn-o32.got: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-1.d: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-1.got: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-2.d: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-2.got: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-3.d: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-3.got: Likewise.
Correct a commit 0e1862bb40 ("Add output_type to bfd_link_info") issue
and use `bfd_link_dll' rather than `bfd_link_pic' in determining whether
to fully resolve GD, LD and IE TLS relocations referring to symbols
locally defined rather than deferring them to the load time by means of
dynamic relocations.
Such symbols cannot be preempted in PIE executables, which are
necessarily PIC, and therefore their values (thread pointer offsets) are
fixed at the static link time as is the associated module ID of the main
executable.
Given the `tlsbin-o32.s' and `tlsdyn-o32.s' sources from our test suite
this removes the absolute TLS relocations from the static:
DYNAMIC RELOCATION RECORDS
OFFSET TYPE VALUE
00000000 R_MIPS_NONE *ABS*
1000002c R_MIPS_TLS_TPREL32 *ABS*
10000030 R_MIPS_TLS_DTPMOD32 *ABS*
10000038 R_MIPS_TLS_DTPMOD32 *ABS*
and the dynamic:
DYNAMIC RELOCATION RECORDS
OFFSET TYPE VALUE
00000000 R_MIPS_NONE *ABS*
1000002c R_MIPS_TLS_TPREL32 *ABS*
10000038 R_MIPS_TLS_DTPMOD32 *ABS*
10000044 R_MIPS_TLS_DTPMOD32 *ABS*
10000030 R_MIPS_TLS_DTPMOD32 tlsvar_gd
10000034 R_MIPS_TLS_DTPREL32 tlsvar_gd
10000040 R_MIPS_TLS_TPREL32 tlsvar_ie
PIE executable respectively, as reported by `objdump -R', and fills the
corresponding GOT slots with the values expected, as recorded with the
test cases added. The new output from `objdump -R' is:
DYNAMIC RELOCATION RECORDS (none)
and:
DYNAMIC RELOCATION RECORDS
OFFSET TYPE VALUE
00000000 R_MIPS_NONE *ABS*
10000030 R_MIPS_TLS_DTPMOD32 tlsvar_gd
10000034 R_MIPS_TLS_DTPREL32 tlsvar_gd
10000040 R_MIPS_TLS_TPREL32 tlsvar_ie
for the static and the dynamic executable respectively.
2018-07-11 Maciej W. Rozycki <macro@mips.com>
Rich Felker <bugdal@aerifal.cx>
bfd/
PR ld/22570
* elfxx-mips.c (mips_tls_got_relocs): Use `bfd_link_dll' rather
than `bfd_link_pic' to determine whether dynamic relocations are
to be produced.
(mips_elf_initialize_tls_slots): Likewise.
ld/
PR ld/22570
* testsuite/ld-mips-elf/tlsbin-pie-o32.d: New test.
* testsuite/ld-mips-elf/tlsbin-pie-o32.got: New test.
* testsuite/ld-mips-elf/tlsdyn-pie-o32.d: New test.
* testsuite/ld-mips-elf/tlsdyn-pie-o32.got: New test.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
git commit 624940689a wrongly changed fill.d and fill16.d notarget
entries to xfail, so revert that change and instead replace notarget
with skip. The two tests are complementary.
This patch also modifies the pr20022 test to use .data, avoiding
xfails on targets that complain about dynamic relocations in .text.
This shows a bug in metag which discards section _foo in pr2022.so.
* testsuite/ld-elf/hash.d: Comment on mips xfail.
* testsuite/ld-gc/pr20022b.s: Use .data not .text.
* testsuite/ld-gc/pr20022.d: Remove xfails.
* testsuite/ld-scripts/fill.d: Revert most of last patch, but use
skip rather than notarget.
* testsuite/ld-scripts/fill16.d: Likewise.
Only run MIPS/LD export class call relocation tests with shared library
targets, avoiding:
.../ld/ld-new: -shared not supported
linker errors and removing:
FAIL: MIPS export class call relocation test (o32)
regressions with `mipsel-ps2-elf' and `mips64el-ps2-elf' targets.
ld/
* testsuite/ld-mips-elf/mips-elf.exp: Limit export class call
relocation tests to shared library targets.
elf32-xgate.c contains many functions that are only stubs and
elf32-xgate.h contains unused declarations. While this might be
reasonable for the initial commit of a port with subsequent work
fleshing out the stubs, xgate has only had two minor target specific
patches since the initial commit over six years ago. The rest of the
changes have been general maintenance work applied to all ELF targets,
and some of this work could have been avoided if the stubs hadn't been
there. So this patch removes all the stubs.
I've kept the functionality of the old elf32_xgate_add_symbol_hook,
implemented in elf32_xgate_backend_symbol_processing. Presumably,
that's to set the symbol st_target_internal flag for use in
elf32-m68hc1x.c:elf32_m68hc11_relocate_section.
The empty elf32_xgate_relocate_section meant that xgate had no linker.
Or at least, no linker relocation processing. Deleting the
elf_backend_relocate_section define means the target will now use the
generic linker reloc processing. How good that is will depend on the
accuracy of the reloc howtos..
I haven't updated the ld testsuite to xfail tests expected to fail
for generic elf targets.
bfd/
* elf32-xgate.h: Delete.
* elf32-xgate.c: Delete unnecessary forward declarations, add two
that are now needed.
(xgate_elf_bfd_link_hash_table_create)
(xgate_elf_bfd_link_hash_table_free)
(xgate_elf_set_mach_from_flags, struct xgate_scan_param)
(stub_hash_newfunc, elf32_xgate_add_symbol_hook)
(elf32_xgate_setup_section_lists, elf32_xgate_size_stubs)
(elf32_xgate_build_stubs, elf32_xgate_check_relocs)
(elf32_xgate_relocate_section, _bfd_xgate_elf_set_private_flags)
(elf32_xgate_post_process_headers): Delete.
(elf32_xgate_backend_symbol_processing): New function.
(xgate_elf_ignore_reloc, xgate_elf_special_reloc)
(_bfd_xgate_elf_print_private_bfd_data): Make static.
(ELF_TARGET_ID, elf_info_to_howto, elf_backend_check_relocs)
(elf_backend_relocate_section, elf_backend_object_p)
(elf_backend_final_write_processing, elf_backend_can_gc_sections)
(elf_backend_post_process_headers, elf_backend_add_symbol_hook)
(bfd_elf32_bfd_link_hash_table_create)
(bfd_elf32_bfd_set_private_flags)
(xgate_stub_hash_lookup): Don't define.
(elf_backend_symbol_processing): Define.
* elf-bfd.h (elf_target_id): Delete XGATE_ELF_DATA.
ld/
* emulparams/xgateelf.sh (TEMPLATE_NAME) Set to generic.
(EXTRA_EM_FILE): Set to genelf.
The current default dumps for n64 GOT relocation tests only work for
IRIX targets really, while the Linux dumps are suitable for non-Linux
targets as well. Make the Linux dumps the default then and handle the
IRIX ones as a special case.
Define an `irix' variable as a shorthand for `[istarget *-*-irix*]' and
use it for these n64 GOT relocation tests as well as export class call
relocation tests.
ld/
* testsuite/ld-mips-elf/elf-rel-got-n64.d: Rename to...
* testsuite/ld-mips-elf/elf-rel-got-n64-irix.d: ... this.
* testsuite/ld-mips-elf/elf-rel-got-n64-linux.d: Rename to...
* testsuite/ld-mips-elf/elf-rel-got-n64.d: ... this.
* testsuite/ld-mips-elf/elf-rel-xgot-n64.d: Rename to...
* testsuite/ld-mips-elf/elf-rel-xgot-n64-irix.d: ... this.
* testsuite/ld-mips-elf/elf-rel-xgot-n64-linux.dd: Rename to...
* testsuite/ld-mips-elf/elf-rel-xgot-n64.d: ... this.
* testsuite/ld-mips-elf/mips-elf.exp: Update accordingly.
Define `irix' as a shorthand for `[istarget *-*-irix*]' and use
it throughout.
Factor in the presence of a `.gnu.attributes' section at the end of the
respective dumps:
Disassembly of section .gnu.attributes:
0000000000000000 <.gnu.attributes>:
0: 41000000 bc0f 4 <__dso_displacement+0x4>
4: 0f676e75 jal d9db9d4 <__dso_displacement+0xd9db9d4>
8: 00010000 sll zero,at,0x0
c: 00070401 0x70401
and also ignore any trailing output with the IRIX variant of n64 GOT
relocation tests, like already done with the Linux and the embedded
ones, removing:
FAIL: MIPS ELF got reloc n64
FAIL: MIPS ELF xgot reloc n64
LD testsuite regressions with the `mips-sgi-irix6' target.
ld/
* testsuite/ld-mips-elf/elf-rel-got-n64.d: Add `#pass' at the
end.
* testsuite/ld-mips-elf/elf-rel-xgot-n64.d: Likewise.
Correct a MIPS/BFD linker issue with dynamic symbol and corresponding
GOT entry values being redirected to lazy binding stubs where the stubs
section has been discarded by assigning to the `/DISCARD/' output
section in the linker script used. The issue manifests itself by the
values entered being relative to the absolute section, which is what any
discarded sections are internally assigned in the linker.
For the `stub-dynsym-2.s' piece of code included as a test case with
this change this issue results in the dynamic symbol table and the GOT
looking like:
Symbol table '.dynsym' contains 3 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 00000000 0 NOTYPE LOCAL DEFAULT UND
1: 00000010 0 FUNC GLOBAL DEFAULT UND bar
2: 00000000 0 FUNC GLOBAL DEFAULT UND foo
Primary GOT:
Canonical gp value: 00097ff0
Reserved entries:
Address Access Initial Purpose
00090000 -32752(gp) 00000000 Lazy resolver
00090004 -32748(gp) 80000000 Module pointer (GNU extension)
Global entries:
Address Access Initial Sym.Val. Type Ndx Name
00090008 -32744(gp) 00000010 00000010 FUNC UND bar
0009000c -32740(gp) 00000000 00000000 FUNC UND foo
if assembled to regular MIPS code, or:
Symbol table '.dynsym' contains 3 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 00000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000d 0 FUNC GLOBAL DEFAULT UND bar
2: 00000001 0 FUNC GLOBAL DEFAULT UND foo
Primary GOT:
Canonical gp value: 00097ff0
Reserved entries:
Address Access Initial Purpose
00090000 -32752(gp) 00000000 Lazy resolver
00090004 -32748(gp) 80000000 Module pointer (GNU extension)
Global entries:
Address Access Initial Sym.Val. Type Ndx Name
00090008 -32744(gp) 0000000d 0000000d FUNC UND bar
0009000c -32740(gp) 00000001 00000001 FUNC UND foo
if assembled to microMIPS code. Symbol values and GOT entries record
the offset into the inexistent stubs section and the ISA bit rather than
zero, which would be the case if a lazy binding stub was not used for
other reasons, such as the value of the symbol being taken for a purpose
other than making a function call (e.g. an R_MIPS_GOT16 relocation).
Correct the issue by refraining from redirecting symbols to lazy binding
stubs if the stubs section is going to be discarded.
bfd/
* elfxx-mips.c (_bfd_mips_elf_adjust_dynamic_symbol): Don't set
`->needs_lazy_stub' if the stubs output section is the absolute
section.
ld/
* testsuite/ld-mips-elf/stub-dynsym-2.dd: New test.
* testsuite/ld-mips-elf/stub-dynsym-2.gd: New test.
* testsuite/ld-mips-elf/stub-dynsym-2.sd: New test.
* testsuite/ld-mips-elf/stub-dynsym-discard-2.gd: New test.
* testsuite/ld-mips-elf/stub-dynsym-discard-2.sd: New test.
* testsuite/ld-mips-elf/stub-dynsym-micromips-2.dd: New test.
* testsuite/ld-mips-elf/stub-dynsym-micromips-2.gd: New test.
* testsuite/ld-mips-elf/stub-dynsym-micromips-2.sd: New test.
* testsuite/ld-mips-elf/stub-dynsym-micromips-insn32-2.dd: New
test.
* testsuite/ld-mips-elf/stub-dynsym-micromips-insn32-2.gd: New
test.
* testsuite/ld-mips-elf/stub-dynsym-micromips-insn32-2.sd: New
test.
* testsuite/ld-mips-elf/stub-dynsym-2.ld: New test linker
script.
* testsuite/ld-mips-elf/stub-dynsym-discard-2.ld: New test
linker script.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
Bring the LD implementation of `run_dump_test' in line with its binutils
and GAS counterparts and report the UNSUPPORTED status for tests the run
of which has been prevented by means of one or more of `target',
`alltargets' and `notarget' tags. Define `skip', `anyskip' and `noskip'
tags, which do not report anything for tests that are not run.
The rationale behind this is that we want to have unsupported tests
reported to ensure that they have actually been attempted and have not
been accidentally suppressed. Then tests which have target-specific
variants that cannot be expressed with a single .d file can make use of
the newly added tags to silently suppress the uninteresting variants.
ld/
* testsuite/lib/ld-lib.exp (run_dump_test): Call `unsupported'
if the target being tested has been excluded by means of one or
more of `target', `alltargets' and `notarget' tags. Add support
for `skip', `anyskip' and `noskip' tags.
Bring the LD implementation of `run_dump_test' in line with its binutils
and GAS counterparts and use the intended test name, from the `name' tag
if set, for test status reporting as soon as it is available.
ld/
* testsuite/lib/ld-lib.exp (run_dump_test): Move the setting of
`testname' earlier on and use it for test status reporting.
With config.sub now properly returning m68hc12-unknown-elf rather than
m68hc12-unknown-none, more ELF tests run. This patch enables
STB_GNU_UNIQUE processing fixing some testsuite failures that probably
no m68hc12 user cares about, and removes some XPASSes.
bfd/
* elf32-m68hc1x.c (elf32_m68hc11_post_process_headers): Call
_bfd_elf_post_process_headers.
ld/
* testsuite/ld-discard/extern.d: Remove m68hc12 xfail.
* testsuite/ld-discard/start.d: Likewise.
* testsuite/ld-discard/static.d: Likewise.
In case params.thumb_entry_symbol has its default NULL value, using it
to print a warning in gld${EMULATION_NAME}_finish results in a crash.
Use h->root.string instead which either points to
params.thumb_entry_symbol name or to entry_symbol name.
2018-07-09 Christophe Lyon <christophe.lyon@linaro.org>
* emultempl/armelf.em (gld${EMULATION_NAME}_finish): Use the right
symbol name in case of warning.
Change-Id: Iec61a833c0ad538b1440bf326ba67834c314dd63
bfd/
* config.bfd (riscv32*-*-*): Renamed from riscv32-*-*.
(riscv64*-*-*): Likewise.
(riscv-*-*): Add as an alias for riscv32*-*-*.
ld/
* configure.tgt (riscv-*-*): Add as an alias for riscv32*-*-*.
Replace two remaining spelled-out calls to `[istarget mips*-*-linux*]'
in `mips-elf.exp' with $linux_gnu, which is equivalent.
ld/
* testsuite/ld-mips-elf/mips-elf.exp: Replace remaining calls to
`[istarget mips*-*-linux*]' with $linux_gnu.
There is no need to generate x86 ISA properties with empty bits in
linker output.
bfd/
PR ld/23372
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Remove x86
ISA properties with empty bits.
ld/
PR ld/23372
* testsuite/ld-i386/i386.exp: Run pr23372a and pr23372b.
* testsuite/ld-i386/pr23372a.d: New file.
* testsuite/ld-i386/pr23372a.s: Likewise.
* testsuite/ld-i386/pr23372b.d: Likewise.
* testsuite/ld-i386/pr23372b.s: Likewise.
* testsuite/ld-i386/pr23372c.s: Likewise.
* testsuite/ld-x86-64/pr23372a-x32.d: Likewise.
* testsuite/ld-x86-64/pr23372a.d: Likewise.
* testsuite/ld-x86-64/pr23372a.s: Likewise.
* testsuite/ld-x86-64/pr23372b-x32.d: Likewise.
* testsuite/ld-x86-64/pr23372b.d: Likewise.
* testsuite/ld-x86-64/pr23372b.s: Likewise.
* testsuite/ld-x86-64/pr23372c.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run pr23372a, pr23372a-x32,
pr23372b and pr23372b-x32.
And report the two input files that are incompatible rather than
reporting that an input file is incompatible with the output.
bfd/
* elf-bfd.h (_bfd_elf_ppc_merge_fp_attributes): Update prototype.
* elf32-ppc.c (_bfd_elf_ppc_merge_fp_attributes): Return error
on mismatch. Remove "warning: " from messages. Track last bfd
used to set tags.
(ppc_elf_merge_obj_attributes): Likewise. Handle status from
_bfd_elf_ppc_merge_fp_attributes.
* elf64-ppc.c (ppc64_elf_merge_private_bfd_data): Handle status
from _bfd_elf_ppc_merge_fp_attributes.
ld/
* testsuite/ld-powerpc/attr-gnu-4-12.d: Update expected output.
* testsuite/ld-powerpc/attr-gnu-4-13.d: Likewise.
* testsuite/ld-powerpc/attr-gnu-4-21.d: Likewise.
* testsuite/ld-powerpc/attr-gnu-4-23.d: Likewise.
* testsuite/ld-powerpc/attr-gnu-4-31.d: Likewise.
* testsuite/ld-powerpc/attr-gnu-4-32.d: Likewise.
* testsuite/ld-powerpc/attr-gnu-8-23.d: Likewise.
* testsuite/ld-powerpc/attr-gnu-12-21.d: Likewise.
Set non_ir_ref_regular to TRUE for symbols forced into the output file
so that they won't be removed by garbage collection with LTO.
PR ld/23309
* ldlang.c (insert_undefined): Set non_ir_ref_regular to TRUE.
* plugin.c (is_visible_from_outside): Don't scan entry_symbol.
* testsuite/ld-plugin/pr23309.c: New file.
* testsuite/ld-plugin/pr23309.d: Likewise.
We need to clear the R_X86_64_converted_reloc_bit bit after setting it
to avoid leaking it out by --emit-relocs.
bfd/
PR ld/23324
* elf64-x86-64.c (elf_x86_64_relocate_section): Clear the
R_X86_64_converted_reloc_bit bit.
ld/
PR ld/23324
* testsuite/ld-x86-64/pr23324.s: New file.
* testsuite/ld-x86-64/pr23324a.d: Likewise.
* testsuite/ld-x86-64/pr23324b.d: Likewise.
BFD's bfd_get_mach () function returns a bfd specific value representing
the architecture of the target which is populated from the Tag_CPU_arch
build attribute value of that target. Among other users of that
interfacem, objdump which uses it to print the architecture version of
the binary being examinated and to decide what instruction is available
if run with "-m arm" via its own mapping from bfd_mach_arm_X values to
feature bits available.
However, both BFD and objdump's most recent known architecture is
Armv5TE. When encountering a newer architecture bfd_get_mach will return
bfd_mach_arm_unknown. This is unfortunate since objdump uses that value
to allow all instructions on all architectures which is already what it
does by default, making the "-m arm" trick useless.
This patch updates BFD and objdump's knowledge of Arm architecture
versions up to the latest Armv8-M Baseline and Mainline, Armv8-R and
Armv8.4-A architectures. Since several architecture versions (eg. 8.X-A)
share the same Tag_CPU_arch build attribute value and
bfd_mach_arm values, the mapping from bfd machine value to feature bits
need to return the most featureful feature bits that would yield the
given bfd machine value otherwise some instruction would not disassemble
under "-m arm" mode. The patch rework that mapping to make this clearer
and simplify writing the mapping rules. In particular, for simplicity
all FPU instructions are allowed in all cases.
Finally, the patch also rewrite the cpu_arch_ver table in GAS to use the
TAG_CPU_ARCH_X macros rather than hardcode their value.
2018-07-02 Thomas Preud'homme <thomas.preudhomme@arm.com>
bfd/
* archures.c (bfd_mach_arm_5TEJ, bfd_mach_arm_6, bfd_mach_arm_6KZ,
bfd_mach_arm_6T2, bfd_mach_arm_6K, bfd_mach_arm_7, bfd_mach_arm_6M,
bfd_mach_arm_6SM, bfd_mach_arm_7EM, bfd_mach_arm_8, bfd_mach_arm_8R,
bfd_mach_arm_8M_BASE, bfd_mach_arm_8M_MAIN): Define.
* bfd-in2.h: Regenerate.
* cpu-arm.c (arch_info_struct): Add entries for above new
bfd_mach_arm values.
* elf32-arm.c (bfd_arm_get_mach_from_attributes): Add Tag_CPU_arch to
bfd_mach_arm mapping logic for pre Armv4 and Armv5TEJ and later
architectures. Force assert failure for any new Tag_CPU_arch value.
gas/
* config/tc-arm.c (cpu_arch_ver): Use symbolic TAG_CPU_ARCH macros
rather than hardcode their values.
ld/
* arm-dis.c (select_arm_features): Fix typo in heading comment. Allow
all FPU features and add mapping from new bfd_mach_arm values to
allowed CPU feature bits.
opcodes/
* testsuite/ld-arm/tls-descrelax-be8.d: Add architecture version in
expected result.
* testsuite/ld-arm/tls-descrelax-v7.d: Likewise.
* testsuite/ld-arm/tls-longplt-lib.d: Likewise.
* testsuite/ld-arm/tls-longplt.d: Likewise.
Binutils documentation uses a mix of spelling for the compound word
"command-line X". According to [1]:
"Sometimes compound words are written separately (nail polish),
sometimes with a hyphen (short-sighted) and sometimes as one word
(eyelashes). Often new compounds are written as two separate words and,
as they become more familiar, they are either connected with a hyphen
(-) or made into one word."
I think command-line X is common enough in our industry that the two
workds command and line should be connected. Since command-line is more
common than commandline, I propose to update binutils documentation to
consistently use "command-line" when this is used as an adjective to a
noun (eg. command-line argument, command-line switch, command-line
option and command-line flag). I've left occurences of "the command
line" as is. I've also left gdb, sim and readline alone and have only
touched public documentation (texi and NEWS files).
[1]
http://dictionary.cambridge.org/grammar/british-grammar/word-formation/compounds
2018-07-02 Thomas Preud'homme <thomas.preudhomme@arm.com>
bfd/
* doc/bfdint.texi: Use command-line consistently when used in a
compount word.
* doc/bfdsumm.texi: Likewise.
binutils/
* NEWS: Use command-line consistently when used in a compount word.
* doc/binutils.texi: Likewise and fix trailing whitespace on same
line.
gas/
* NEWS: Use command-line consistently when used in a compount word.
* doc/as.texi: Likewise.
* doc/c-aarch64.texi: Likewise.
* doc/c-alpha.texi: Likewise.
* doc/c-arc.texi: Likewise.
* doc/c-arm.texi: Likewise.
* doc/c-avr.texi: Likewise.
* doc/c-bfin.texi: Likewise.
* doc/c-cris.texi: Likewise.
* doc/c-epiphany.texi: Likewise.
* doc/c-i386.texi: Likewise.
* doc/c-ia64.texi: Likewise.
* doc/c-lm32.texi: Likewise.
* doc/c-m32r.texi: Likewise.
* doc/c-m68k.texi: Likewise.
* doc/c-mips.texi: Likewise.
* doc/c-mmix.texi: Likewise.
* doc/c-msp430.texi: Likewise.
* doc/c-mt.texi: Likewise.
* doc/c-nios2.texi: Likewise.
* doc/c-ppc.texi: Likewise.
* doc/c-pru.texi: Likewise.
* doc/c-rl78.texi: Likewise.
* doc/c-rx.texi: Likewise.
* doc/c-tic6x.texi: Likewise.
* doc/c-v850.texi: Likewise.
* doc/c-vax.texi: Likewise.
* doc/c-visium.texi: Likewise.
* doc/c-xstormy16.texi: Likewise.
* doc/c-xtensa.texi: Likewise.
* doc/c-z80.texi: Likewise.
* doc/c-z8k.texi: Likewise.
* doc/internals.texi: Likewise.
gprof/
* gprof.texi: Use command-line consistently when used in a compount
word.
ld/
* NEWS: Use command-line consistently when used in a compount word.
* ld.texinfo: Likewise.
* ldint.texinfo: Likewise.
The testcase isn't valid. If it happens to run on your target, you're
lucky.
PR 23169
* testsuite/ld-ifunc/ifunc.exp: Don't run pr23169 tests on
powerpc. Comment.
Pekka Sepp?nen
Alan Modra
H.J. Lu
Nick Clifton
Christopher Yeleighton
Sudakshina Das
Sandra Loosemore
Matthew Fortune
Jozef Lawrynowicz
Faraz Shahbazker
Andre Vieira
Tamar Christina
Max Filippov
marxin
Nick Bowler
Andreas Krebbel
Thomas Schwinge
Claudiu Zissulescu
Eric Botcazou
Sebastian Huber
Yuri Chornoivan
Jim Wilson
Maamoun Tarsha
Andrew Paprocki
Thomas Preud'homme
Maciej W. Rozycki
Marc
Christoph Conrads
Stafford Horne
Richard Henderson
Andreas Krebbel
John Darrington
Maciej W. Rozycki
Chenghua Xu
Martin Storsjo
claziss
Dimitar Dimitrov
Roland McGrath
Andrew Jenner
Christophe Lyon
Thomas Preud'homme