Add elf32_xc16x_rtype_to_howto to get reloc_howto_type pointer from
ELF32_R_TYPE.
* elf32-xc16x.c (elf32_xc16x_rtype_to_howto): New function.
(elf32_xc16x_relocate_section): Call elf32_xc16x_rtype_to_howto
instead of xc16x_reloc_type_lookup to get reloc_howto_type.
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.
Up until now OpenRISC GDB only has supported bare metal debugging. This
patch adds linux userspace debugging and core dump analysis support.
The changes are loosely based on nios2 and riscv implementations.
This was tested with linux 4.20 core dumps for executables linked
against musl libc.
bfd/ChangeLog:
* elf32-or1k.c (or1k_grok_prstatus): New function.
(or1k_grok_psinfo): Likewise.
gdb/ChangeLog:
* Makefile.in (ALL_TARGET_OBS): Add or1k-linux-tdep.o.
* configure.tgt: Add or1k*-*-linux*.
* or1k-linux-tdep.c: New file.
* or1k-tdep.c (or1k_gdbarch_init): Call gdbarch_init_osabi.
bfd/
PR 23952
* syms.c (_bfd_generic_read_minisymbols): Free syms before
returning with zero symcount.
binutils/
* nm.c (display_rel_file): Use xrealloc to increase minisyms
for synthetic symbols.
This patch started off just adding the warnings in tc-ppc.c about
incorrect usage of @l, @h and @ha in instructions that don't have
16-bit D-form fields. That unfortunately showed up three warnings in
ld/testsuite/ld-powerpc/vle-multiseg.s on instructions like
e_li r3, IV_table@l+0x00
which was being assembled to
8: 70 60 00 00 e_li r3,0
a: R_PPC_ADDR16_LO IV_table
The ADDR16_LO reloc is of course completely bogus on e_li, which has
a split 20-bit signed integer field in bits 0x1f7fff, the low 11 bit
in 0x7ff, the next 5 bits in 0x1f0000, and the high 4 bits in 0x7800.
Applying an ADDR16_LO reloc to the instruction potentially changes
the e_li instruction to e_add2i., e_add2is, e_cmp16i, e_mull2i,
e_cmpl16i, e_cmph16i, e_cmphl16i, e_or2i, e_and2i., e_or2is, e_lis,
e_and2is, or some invalid encodings.
Now there is a relocation that suits e_li, R_PPC_VLE_ADDR20, which was
added 2017-09-05 but I can't see code in gas to generate the
relocation. In any case, VLE_ADDR20 probably doesn't have the correct
semantics for @l since ideally you'd want an @l to pair with @h or @ha
to generate a 32-bit constant. Thus @l should only produce a 16-bit
value, I think. So we need some more relocations to handle e_li it
seems, or as I do in this patch, modify the behaviour of existing
relocations when applied to e_li instructions.
include/
* opcode/ppc.h (E_OPCODE_MASK, E_LI_MASK, E_LI_INSN): Define.
bfd/
* elf32-ppc.c (ppc_elf_howto_raw <R_PPC_VLE_ADDR20>): Correct
mask and shift value.
(ppc_elf_vle_split16): Use E_OPCODE_MASK. Handle e_li
specially.
gas/
* config/tc-ppc.c (md_assemble): Adjust relocs for VLE before
TLS tweaks. Handle e_li. Warn on unexpected operand field
for lo16/hi16/ha16 relocs.
Armv8.3-A has another key used in pointer authentication called the
B-key (other than the A-key that is already supported). In order for
stack unwinders to work it is necessary to be able to identify frames
that have been signed with the B-key rather than the A-key and it was
felt that keeping this as an augmentation character in the CIE was the
best bet. The DWARF extensions for ARM therefore propose to add a new
augmentation character 'B' to the CIE augmentation string and the
corresponding cfi directive ".cfi_b_key_frame". I've made the relevant
changes to GAS and LD to add support for B-key unwinding, which required
modifying LD to check for 'B' in the augmentation string, adding the
".cfi_b_key_frame" directive to GAS and adding a "pauth_key" field to
GAS's fde_entry and cie_entry structs.
The pointer authentication instructions will behave as NOPs on
architectures that don't support them, and so a check for the
architecture being assembled for is not necessary since there will be no
behavioural difference between augmentation strings with and without the
'B' character on such architectures.
2018-12-05 Sam Tebbs <sam.tebbs@arm.com>
bfd/
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Add check for 'B'.
gas/
* dw2gencfi.c (struct cie_entry): Add tc_cie_entry_extras invocation.
(alloc_fde_entry): Add tc_fde_entry_init_extra invocation.
(output_cie): Add tc_output_cie_extra invocation.
(select_cie_for_fde): Add tc_cie_fde_equivalent_extra and
tc_cie_entry_init_extra invocation.
(frch_cfi_data, cfa_save_data): Move to dwgencfi.h.
* config/tc-aarch64.c (s_aarch64_cfi_b_key_frame): Declare.
(md_pseudo_table): Add "cfi_b_key_frame".
* config/tc-aarch64.h (tc_fde_entry_extras, tc_cie_entry_extras,
tc_fde_entry_init_extra, tc_output_cie_extra,
tc_cie_fde_equivalent_extra, tc_cie_entry_init_extra): Define.
* dw2gencfi.h (struct fde_entry): Add tc_fde_entry_extras invocation.
(pointer_auth_key): Define.
(frch_cfi_data, cfa_save_data): Move from dwgencfi.c.
* doc/c-aarch64.texi (.cfi_b_key_frame): Add documentation.
* testsuite/gas/aarch64/(pac_ab_key.d, pac_ab_key.s): New file.
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.
PR 23932
* elf.c (IS_CONTAINED_BY_LMA): Add a check for a negative section
size.
(rewrite_elf_program_header): If no sections are mapped into a
segment return an error.
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.
.note.gnu.property section in IR inputs should be ignored. Don't
merge them.
PR ld/23929
* elf-properties.c (_bfd_elf_link_setup_gnu_properties): Don't
merge .note.gnu.property section in IR inputs.
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.
Switch from `_bfd_error_handler' to `info->callbacks->einfo' with error
reporting concerning the use of position-dependent relocations such as
R_MIPS_HI16 or R_MIPS_26 in PIC code and continue processing so that any
subsequent link errors are also shown rather than the linker terminating
right away. This can reduce user frustration where correcting one error
only reveals another one; instead all are shown together making them all
possible to investigate at once. The use of the `%X' specifier causes
the linker to terminate unsuccessfully at the end of processing.
Also fix the message to say `cannot' rather than `can not'.
bfd/
* elfxx-mips.c (_bfd_mips_elf_check_relocs) <R_MIPS16_26>
<R_MIPS_26, R_MICROMIPS_26_S1>: Use `info->callbacks->einfo'
rather than `_bfd_error_handler' to report refused relocations
in PIC code and continue processing. Fix error message: `can
not' -> `cannot'.
Initialize *uncompressed_align_pow_p to 0 since *uncompressed_align_pow_p
is passed to bfd_is_section_compressed_with_header as uninitialized,
PR binutils/23919
* compress.c (bfd_is_section_compressed_with_header): Initialize
*uncompressed_align_pow_p to 0.
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.
PR binutils/23919
binutils* readelf.c (dump_sections_as_strings): Remove bogus addralign check.
(dump_sections_as_bytes): Likewise.
(load_specific_debug_sections): Likewise.
* testsuite/binutils-all/dw2-3.rS: Adjust alignment.
* testsuite/binutils-all/dw2-3.rt: Likewise.
bfd * bfd.c (bfd_update_compression_header): Explicitly set alignment.
(bfd_check_compression_header): Add uncompressed_alignment_power
argument. Check ch_addralign is a power of 2.
* bfd-in2.h: Regenerated.
* compress.c (bfd_compress_section_contents): Get and set
orig_uncompressed_alignment_pow if section is decompressed.
(bfd_is_section_compressed_with_header): Add and get
uncompressed_align_pow_p argument.
(bfd_is_section_compressed): Add uncompressed_align_power argument
to bfd_is_section_compressed_with_header call.
(bfd_init_section_decompress_status): Get and set
uncompressed_alignment_power.
* elf.c (_bfd_elf_make_section_from_shdr): Add
uncompressed_align_power argument to
bfd_is_section_compressed_with_header call.
When invoking GCC with "-g -flto", the compiler will create LTO objects
with debug information. The objects created are "simple ELF" objects (see
libiberty/simple-object-elf.c) and do not have target-specific sections.
When the MSP430 linker sees one of these objects without a .MSP430.attributes
section it errors:
> error: /tmp/cc4LhbEI.ltrans0.ltrans.o uses MSP430X instructions but /tmp/ccynqIwudebugobj uses unknown
> error: /tmp/cc4LhbEI.ltrans0.ltrans.o uses the small code model whereas /tmp/ccynqIwudebugobj uses the unknown code model
> error: /tmp/cc4LhbEI.ltrans0.ltrans.o uses the small data model whereas /tmp/ccynqIwudebugobj uses the unknown data model
> error: /tmp/cc4LhbEI.ltrans0.ltrans.o uses the small code model but /tmp/ccynqIwudebugobj uses the unknown data model
> failed to merge target specific data of file /tmp/cc4LhbEI.ltrans0.ltrans.o
The following patch allows these debug LTO objects to be linked with other
MSP430 objects even if they do not have a .MSP430.attributes section.
bfd * elf32-msp430.c (elf32_msp430_merge_mspabi_attributes): Do not
error when .MSP430.attributes section is missing from objects
created by LTO.
Fix a memory leak appearing when the local got entry list was constructed.
bfd/
xxxx-xx-xx Claudiu Zissulescu <claziss@synopsys.com>
* arc-got.h (arc_get_local_got_ents): Revamp it; use
elf_local_got_ents to store the local got list.
(get_got_entry_list_for_symbo): Restructure it.
* elf32-arc.c (elf_arc_relocate_section): Correct the call to
get_got_entry_list_for_symbol.
bfd * mach-o.h: Add new enums for BFD_MACH_O_PLATFORM_MACOS,
BFD_MACH_O_PLATFORM_IOS, BFD_MACH_O_PLATFORM_TVOS,
BFD_MACH_O_PLATFORM_WATCHOS, BFD_MACH_O_PLATFORM_BRIDGEOS,
BFD_MACH_O_TOOL_CLANG, BFD_MACH_O_TOOL_SWIFT, BFD_MACH_O_TOOL_LD.
(struct bfd_mach_o_note_command): New.
(struct bfd_mach_o_build_version_tool): New.
(struct bfd_mach_o_build_version_command): New.
(bfd_mach_o_read_version_min): Don't split version into
a few fields. Rename reserved to sdk.
* mach-o.c (bfd_mach_o_read_version_min): Don't split version into a
few fields. Rename reserved to sdk.
(bfd_mach_o_read_command): Handle LC_VERSION_MIN_TVOS, LC_NOTE,
LC_BUILD_VERSION.
(bfd_mach_o_read_note): New.
(bfd_mach_o_read_build_version): New.
PR 23728
binutils* od-macho.c (printf_version): New.
(dump_load_command): Use it to print version. Print sdk version. Print
version info for watchOS and tvOS. Print LC_NOTE, LC_BUILD_VERSION.
(dump_buld_version): New.
(bfd_mach_o_platform_name): New
(bfd_mach_o_tool_name): New
* mach-o/external.h (mach_o_nversion_min_command_external): Rename
reserved to sdk.
(mach_o_note_command_external): New.
(mach_o_build_version_command_external): New.
* mach-o/loader.h (BFD_MACH_O_LC_VERSION_MIN_TVOS): Define.
(BFD_MACH_O_LC_NOTE): Define.
strip/objcopy can't deal with alloc reloc sections, not .rela.dyn or
.rela.plt in a dynamic executable, or .rela.plt/.rela.iplt in a static
executable. So, don't have BFD treat them as side-channel data
associated with the section they are relocating.
PR 23850
* elf.c (bfd_section_from_shdr): Treat SHF_ALLOC SHT_REL* sections
in an executable or shared library as normal sections.
For Local Exec TLS model, the offset of the variable from the thread pointer
can be computed at static link time. This doesn't require GOT indirection.
The initial change is a bad fix for a problem during TLS GD -> LE relaxation.
The proper fix is to check whether _GLOBAL_OFFSET_TABLE_ is referenced,
create got section if yes. And the fix is already in the repository.
bfd/
2018-10-31 Renlin Li <renlin.li@arm.com>
* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Don't create got
section for Local Exec TLS model.
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.
elf_sym_hashes for as-needed libs will be zeroed if the library is
found to be not needed. More than that, the local symbols for such a
library should not be considered by cmse_scan.
* elf32-arm.c (elf32_arm_size_stubs): Ignore as-needed libs that
were not needed.
PR 23805
* elflink.c (elf_link_input_bfd): Don't segfault on finding
STT_TLS symbols without any TLS sections. Instead, change the
symbol type to STT_NOTYPE.
Symbol tables can change when a number of objcopy options are used.
I figure string tables are similarly changeable.
PR 23788
* elf.c (section_match): Don't require a size match for SHT_SYMTAB
or SHT_STRTAB.
This patch improves dynobj selection. This allows the testcase in the
PR to proceed further before segfaulting due to other bugs in the
sparc backend.
../ld/ld-new --eh-frame-hdr -m elf_x86_64 -shared -o bug.so.5 bug.o ./libc.so.6 ./crtendS.o
../ld/ld-new: sparc architecture of input file `bug.o' is incompatible with i386:x86-64 output
../ld/ld-new: bug.o: in function `a':
bug.c:(.text+0x4): undefined reference to `_GLOBAL_OFFSET_TABLE_'
../ld/ld-new: bug.c:(.text+0x8): undefined reference to `_GLOBAL_OFFSET_TABLE_'
Segmentation fault
PR 23653
* elflink.c (_bfd_elf_link_create_dynstrtab): Match elf_object_id
too when choosing dynobj.
The negative size check can be rolled into the "exceeds space left in
section" check if that is done using an unsigned comparison. We know
that "addr - section->vma" is never larger than section->size since
the section is found by find_section_by_vma.
* peXXigen.c (_bfd_XX_bfd_copy_private_bfd_data_common): Simplify
PE_DEBUG_DATA size checks.
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.
This PR shows a fuzzed binary triggering a segfault via a bad
relocation in .debug_line. It turns out that unlike normal
relocations applied to a section, the linker applies those with
symbols from discarded sections via _bfd_clear_contents without
checking that the relocation is within the section bounds. The same
thing now happens when reading debug sections since commit
a4cd947aca, the PR23425 fix.
PR 23770
PR 23425
* reloc.c (_bfd_clear_contents): Replace "location" param with
"buf" and "off". Bounds check "off". Return status.
* cofflink.c (_bfd_coff_generic_relocate_section): Update
_bfd_clear_contents call.
* elf-bfd.h (RELOC_AGAINST_DISCARDED_SECTION): Likewise.
* elf32-arc.c (elf_arc_relocate_section): Likewise.
* elf32-i386.c (elf_i386_relocate_section): Likewise.
* elf32-metag.c (metag_final_link_relocate): Likewise.
* elf32-nds32.c (nds32_elf_get_relocated_section_contents): Likewise.
* elf32-ppc.c (ppc_elf_relocate_section): Likewise.
* elf32-visium.c (visium_elf_relocate_section): Likewise.
* elf64-ppc.c (ppc64_elf_relocate_section): Likewise.
* elf64-x86-64.c *(elf_x86_64_relocate_section): Likewise.
* libbfd-in.h (_bfd_clear_contents): Update prototype.
* libbfd.h: Regenerate.
Prevents getting an error about dynamic symbols in sections indexed
64K+ when .dynsym is discarded.
* elflink.c (elf_link_output_extsym): Do not place symbols into a
discarded .dynsym.
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.
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.
p_vaddr is currently set from the first section vma if a segment has
sections, and to zero if a segment has no sections. This means we
lose p_vaddr when objcopy'ing executables if a segment without
sections has a non-zero p_vaddr.
This patch saves p_vaddr to p_vaddr_offset, and to make the use of
p_vaddr_offset consistent, inverts the sign. (It's now added to
section vma to get segment vaddr, and added to zero when there are no
sections.)
* elf.c (assign_file_positions_for_load_sections): Set p_vaddr
from m->p_vaddr_offset for segments without sections. Invert
sign of p_vaddr_offset.
(rewrite_elf_program_header, copy_elf_program_header): Save
old segment p_vaddr to p_vaddr_offset. Invert sign of
p_vaddr_offset.
