This fixes two leaks found in the new code supporting display of
dynamic symbols retrieved via dynamic tags.
* readelf.c (get_num_dynamic_syms): Formatting. Don't return
on error without freeing.
(process_dynamic_section): Don't recreate dynamic symbols from
dynamic tag info when the dynamic symbols have already been
read via section headers.
When readelf is processing more than one file, static bss vars won't
start out as zero for the second file unless they are cleared.
* readelf.c (process_symbol_table): Zero gnubuckets, gnuchains
etc. after freeing.
When reconstructing dynamic symbol table from the PT_DYNAMIC segment,
compute dynamic symbol table size from hash table. For DT_HASH, the
number of dynamic symbol table entries equals the number of chains.
For DT_GNU_HASH/DT_MIPS_XHASH, only defined symbols with non-STB_LOCAL
indings are in hash table. Since DT_GNU_HASH/DT_MIPS_XHASH place all
symbols with STB_LOCAL binding before symbols with other bindings and
all undefined symbols defined ones in dynamic symbol table, the highest
symbol index in DT_GNU_HASH/DT_MIPS_XHASH is the highest dynamic symbol
table index.
Rewrite print_dynamic_symbol to dump dynamic symbol table for --dyn-syms
and --syms --use-dynamic.
binutils/
PR binutils/25707
* readelf.c (nbuckets): New.
(nchains): Likewise.
(buckets): Likewise.
(chains): Likewise.
(ngnubuckets): Likewise.
(gnubuckets): Likewise.
(gnuchains): Likewise.
(mipsxlat): Likewise.
(ngnuchains): Likewise.
(gnusymidx): Likewise.
(VALID_SYMBOL_NAME): Likewise.
(VALID_DYNAMIC_NAME): Use it.
(get_dynamic_data): Moved before process_dynamic_section.
(get_num_dynamic_syms): New function.
(process_dynamic_section): Use DT_SYMTAB, DT_SYMENT, DT_HASH,
DT_GNU_HASH and DT_MIPS_XHASH to reconstruct dynamic symbol
table. Use DT_STRTAB and DT_STRSZ to reconstruct dynamic string
table.
(get_symbol_index_type): Don't print "bad section index" when
there is no section header.
(print_dynamic_symbol): Rewrite.
(process_symbol_table): Call print_dynamic_symbol to dump dynamic
symbol table.
ld/
PR binutils/25707
* testsuite/ld-arm/armthumb-lib.sym: Updated.
* testsuite/ld-arm/farcall-mixed-app.sym: Likewise.
* testsuite/ld-arm/farcall-mixed-app2.sym: Likewise.
* testsuite/ld-arm/fdpic-main-m.sym: Likewise.
* testsuite/ld-arm/fdpic-main.sym: Likewise.
* testsuite/ld-arm/fdpic-shared-m.sym: Likewise.
* testsuite/ld-arm/fdpic-shared.sym: Likewise.
* testsuite/ld-arm/mixed-app.sym: Likewise.
* testsuite/ld-arm/mixed-lib.sym: Likewise.
* testsuite/ld-arm/preempt-app.sym: Likewise.
* testsuite/ld-elf/hash.d: Likewise.
* testsuite/ld-elf/pr13195.d: Likewise.
* testsuite/ld-elfvsb/hidden2.d: Likewise.
* testsuite/ld-mips-elf/hash2.d: Likewise.
This patch fixes a leak of qualified_name caused by 4c83662712 and a
double free introduced by fd486f32d1. Not breaking out of the loop
results in an error: "failed to seek to next archive header". That's
slightly better than silently preventing the possibility of endless
loops.
* readelf.c (process_archive): Don't double free qualified_name.
Don't break out of loop with "negative" archive_file_size, just
set file offset to max.
With a crafted "negative" ar_hdr.ar_size it is possible to make
readelf loop. This patch catches the overflow in a file offset
calculation.
* readelf.c (process_archive): Prevent endless loop.
process_symbol_table () has
unsigned long num_syms;
...
for (si = 0, psym = symtab; si < num_syms; si++, psym++)
We should use unsigned long to iterate over num_syms.
* readelf.c (process_symbol_table): Use unsigned long for si.
This extracts code reading symbol tables into a common function that
tidies up after errors. I've also changed an error reporting multiple
string tables to an error on multiple symbol tables.
* readelf.c (get_symbols): New function.
(process_relocs, ia64_process_unwind, hppa_process_unwind),
(arm_process_unwind, get_symbol_for_build_attribute): Use it.
In git commit fd486f32d1 I put some static variables used by
get_symbol_for_build_attribute in a file scope ba_cache struct. This
was to prevent leaks in get_symbol_for_build_attribute, and to tidy up
before readelf exited. The patch wasn't quite right though. When
readelf processes more than one file it was possible to double free
arrays allocated in get_symbol_for_build_attribute.
* readelf.c (process_file): Clean ba_cache.
bfd/ChangeLog:
* elf.c (elfcore_grok_netbsd_note): Add support for
NT_NETBSDCORE_LWPSTATUS notes.
binutils/ChangeLog:
* readelf.c (get_netbsd_elfcore_note_type): Add support for
NT_NETBSDCORE_LWPSTATUS notes.
include/ChangeLog:
* elf/common.h (NT_NETBSDCORE_LWPSTATUS): New define.
* elfcomm.c (get_archive_member_name): Always return malloc'd
string or NULL.
* elfedit.c (process_archive): Tidy memory on all return paths.
* readelf.c (process_archive): Likewise.
(process_symbol_table): Likewise.
(ba_cache): New, replacing ..
(get_symbol_for_build_attribute): ..static vars here. Free
strtab and symtab before loading new ones. Reject symtab without
valid strtab in loop, breaking out of loop on valid symtab.
(process_file): Free ba_cache symtab and strtab here, resetting
ba_cache.
* readelf.c (process_section_headers): Don't just set
filedata->section_headers NULL, free it first. Similarly for
dynamic_symbols, dynamic_strings, dynamic_syminfo and
symtab_shndx_list. Zero associated counts too.
(process_object): Free symtab_shndx_list.
(process_file): Free various allocated filedata tables.
PR 25645
* readelf.c (dump_ia64_vms_dynamic_fixups): Pass size and nmemb
to get_data rather than multiplying.
(dump_ia64_vms_dynamic_relocs): Likewise.
(process_version_sections): Correct order of size and nmemb args
in get_data call.
(process_mips_specific): Likewise.
PR 25543
* readelf.c (dump_section_as_strings): Display new-line characters
as \n and then insert a line break.
* testsuite/binutils-all/pr25543.s: New test.
* testsuite/binutils-all/pr25543.d: Test driver.
* testsuite/binutils-all/readelf.exp: Run the new test.
PR 25469
bfd * archures.c: Add GBZ80 and Z80N machine values.
* reloc.c: Add BFD_RELOC_Z80_16_BE.
* coff-z80.c: Add support for new reloc.
* coffcode.h: Add support for new machine values.
* cpu-z80.c: Add support for new machine names.
* elf32-z80.c: Add support for new reloc.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
binutils* readelf.c (get_machine_flags): Add support for Z80N machine
number.
gas * config/tc-z80.c: Add -gbz80 command line option to generate code
for the GameBoy Z80. Add support for generating DWARF.
* config/tc-z80.h: Add support for DWARF debug information
generation.
* doc/c-z80.texi: Document new command line option.
* testsuite/gas/z80/gbz80_all.d: New file.
* testsuite/gas/z80/gbz80_all.s: New file.
* testsuite/gas/z80/z80.exp: Run the new tests.
* testsuite/gas/z80/z80n_all.d: New file.
* testsuite/gas/z80/z80n_all.s: New file.
* testsuite/gas/z80/z80n_reloc.d: New file.
include * coff/internal.h (R_IMM16BE): Define.
* elf/z80.h (EF_Z80_MACH_Z80N): Define.
(R_Z80_16_BE): New reloc.
ld * emulparams/elf32z80.sh: Use z80 emulation.
* emultempl/z80.em: Make generic to both COFF and ELF Z80 emulations.
* emultempl/z80elf.em: Delete.
* testsuite/ld-elf/pr22450.d: Expect to fail for the Z80.
* testsuite/ld-elf/sec64k.exp: Fix Z80 assembly.
* testsuite/ld-unique/pr21529.s: Avoid register name conflict.
* testsuite/ld-unique/unique.s: Likewise.
* testsuite/ld-unique/unique_empty.s: Likewise.
* testsuite/ld-unique/unique_shared.s: Likewise.
* testsuite/ld-unique/unique.d: Updated expected output.
* testsuite/ld-z80/arch_z80n.d: New file.
* testsuite/ld-z80/comb_arch_z80_z80n.d: New file.
* testsuite/ld-z80/labels.s: Add more labels.
* testsuite/ld-z80/relocs.s: Add more reloc tests.
* testsuite/ld-z80/relocs_f_z80n.d: New file
opcodes * z80-dis.c: Add support for GBZ80 opcodes.
debuginfod is a lightweight web service that indexes ELF/DWARF
debugging resources by build-id and serves them over HTTP. This patch
enables objdump and readelf to query debuginfod servers when they are
otherwise not able to find separate debug files. Binutils can be built
with debuginfod using the --with-debuginfod configure option. This
requires that libdebuginfod be installed and found at configure time.
debuginfod is packaged with elfutils, starting with version 0.178. For
more information see https://sourceware.org/elfutils/.
toplevel* config/debuginfod.m4: New file. Add macro AC_DEBUGINFOD. Adds
new configure option --with-debuginfod.
* configure: Regenerate.
* configure.ac: Call AC_DEBUGINFOD.
binutils* Makefile.am (readelf_LDADD, objdump_LDADD): Add libdebuginfod.
* Makefile.in: Regenerate.
* NEWS: Update.
* config.in: Regenerate.
* configure: Regenerate.
* configure.ac: Call AC_DEBUGINFOD.
* doc/Makefile.in: Regenerate.
* doc/binutils.texi: Add section on using binutils
with debuginfod.
* dwarf.c (debuginfod_fetch_separate_debug_info): New function.
Query debuginfod servers for the target debug file.
(load_separate_debug_info): Call
debuginfod_fetch_separate_debug_info if configured with
debuginfod.
(load_separate_debug_files): Add file argument to
load_separate_debug_info calls.
* dwarf.h (get_build_id): Add declaration.
* objdump.c (get_build_id): New function. Get build-id of file.
* readelf.c (get_build_id): Likewise.
* testsuite/binutils-all/debuginfod.exp: New tests.
* testsuite/binutils-all/linkdebug.s: Add .note.gnu.build-id
section.
PR 25224
bfd * Makefile.am: Add z80-elf target support.
* configure.ac: Likewise.
* targets.c: Likewise.
* config.bfd: Add z80-elf target support and new arches: ez80 and z180.
* elf32-z80.c: New file.
* archures.c: Add new z80 architectures: eZ80 and Z180.
* coffcode.h: Likewise.
* cpu-z80.c: Likewise.
* bfd-in2.h: Likewise plus additional Z80 relocations.
* coff-z80.c: Add new relocations for Z80 target and local label check.
gas * config/tc-z80.c: Add new architectures: Z180 and eZ80. Add support
for assembler code generated by SDCC. Add new relocation types. Add
z80-elf target support.
* config/tc-z80.h: Add z80-elf target support. Enable dollar local
labels. Local labels starts from ".L".
* testsuite/gas/all/fwdexp.d: Fix failure due to symbol conflict.
* testsuite/gas/all/fwdexp.s: Likewise.
* testsuite/gas/z80/suffix.d: Fix failure on ELF target.
* testsuite/gas/z80/z80.exp: Add new tests
* testsuite/gas/z80/dollar.d: New file.
* testsuite/gas/z80/dollar.s: New file.
* testsuite/gas/z80/ez80_adl_all.d: New file.
* testsuite/gas/z80/ez80_adl_all.s: New file.
* testsuite/gas/z80/ez80_adl_suf.d: New file.
* testsuite/gas/z80/ez80_isuf.s: New file.
* testsuite/gas/z80/ez80_z80_all.d: New file.
* testsuite/gas/z80/ez80_z80_all.s: New file.
* testsuite/gas/z80/ez80_z80_suf.d: New file.
* testsuite/gas/z80/r800_extra.d: New file.
* testsuite/gas/z80/r800_extra.s: New file.
* testsuite/gas/z80/r800_ii8.d: New file.
* testsuite/gas/z80/r800_z80_doc.d: New file.
* testsuite/gas/z80/z180.d: New file.
* testsuite/gas/z80/z180.s: New file.
* testsuite/gas/z80/z180_z80_doc.d: New file.
* testsuite/gas/z80/z80_doc.d: New file.
* testsuite/gas/z80/z80_doc.s: New file.
* testsuite/gas/z80/z80_ii8.d: New file.
* testsuite/gas/z80/z80_ii8.s: New file.
* testsuite/gas/z80/z80_in_f_c.d: New file.
* testsuite/gas/z80/z80_in_f_c.s: New file.
* testsuite/gas/z80/z80_op_ii_ld.d: New file.
* testsuite/gas/z80/z80_op_ii_ld.s: New file.
* testsuite/gas/z80/z80_out_c_0.d: New file.
* testsuite/gas/z80/z80_out_c_0.s: New file.
* testsuite/gas/z80/z80_reloc.d: New file.
* testsuite/gas/z80/z80_reloc.s: New file.
* testsuite/gas/z80/z80_sli.d: New file.
* testsuite/gas/z80/z80_sli.s: New file.
ld * Makefile.am: Add new target z80-elf
* configure.tgt: Likewise.
* emultempl/z80.em: Add support for eZ80 and Z180 architectures.
* emulparams/elf32z80.sh: New file.
* emultempl/z80elf.em: Likewise.
* testsuite/ld-z80/arch_ez80_adl.d: Likewise.
* testsuite/ld-z80/arch_ez80_z80.d: Likewise.
* testsuite/ld-z80/arch_r800.d: Likewise.
* testsuite/ld-z80/arch_z180.d: Likewise.
* testsuite/ld-z80/arch_z80.d: Likewise.
* testsuite/ld-z80/comb_arch_ez80_z80.d: Likewise.
* testsuite/ld-z80/comb_arch_z180.d: Likewise.
* testsuite/ld-z80/labels.s: Likewise.
* testsuite/ld-z80/relocs.s: Likewise.
* testsuite/ld-z80/relocs_b_ez80.d: Likewise.
* testsuite/ld-z80/relocs_b_z80.d: Likewise.
* testsuite/ld-z80/relocs_f_z80.d: Likewise.
* testsuite/ld-z80/z80.exp: Likewise.
opcodes * z80-dis.c: Add support for eZ80 and Z80 instructions.
This patch catches and reports errors when reading leb128 values,
addressing a FIXME in read_leb128.
* dwarf.h (read_leb128): Update prototype.
(report_leb_status): New inline function.
(SKIP_ULEB, SKIP_SLEB, READ_ULEB, READ_SLEB): Define.
* dwarf.c: Use above macros throughout file. Formatting.
(read_leb128): Reorder params. Add status return param.
Don't stop reading until finding terminator or end of data.
Detect loss of significant bits. Sign extend only on
terminating byte.
(read_sleb128, read_uleb128): Delete functions.
(SKIP_ULEB, SKIP_SLEB, READ_ULEB, READ_SLEB): Delete macros.
(read_and_print_leb128): Rewrite.
(process_extended_line_op): Return a size_t. Use size_t vars.
Adjust to suit new macros. Add proper name size to "data" when
processing DW_LNE_define_file.
(process_abbrev_section): Adjust to suit new macros.
(decode_location_expression, skip_attr_bytes): Likewise.
(get_type_signedness): Likewise.
(read_and_display_attr_value): Likewise. Consolidate block code.
(process_debug_info): Adjust to suit new macros.
(display_formatted_table, display_debug_lines_raw): Likewise.
(display_debug_lines_decoded): Likewise. Properly check for end
of DW_LNS_extended_op.
(display_debug_macinfo): Adjust to suit new macros.
(get_line_filename_and_dirname, display_debug_macro): Likewise.
(display_view_pair_list): Likewise. Don't back off when hitting
end of data.
(display_loc_list): Adjust to suit new macros.
(display_loclists_list, display_loc_list_dwo): Likewise.
(display_debug_rnglists_list, read_cie): Likewise.
(display_debug_frames): Likewise.
* readelf.c: Use new ULEB macros throughout file.
(read_uleb128): Delete.
(decode_arm_unwind_bytecode): Use read_leb128.
(decode_tic6x_unwind_bytecode): Likewise.
(display_tag_value): Adjust to suit new macros.
(display_arc_attribute, display_arm_attribute): Likewise.
(display_gnu_attribute, display_power_gnu_attribute): Likewise.
(display_s390_gnu_attribute, display_sparc_gnu_attribute): Likewise.
(display_mips_gnu_attribute, display_tic6x_attribute): Likewise.
(display_msp430x_attribute, display_msp430_gnu_attribute): Likewise.
(display_riscv_attribute, process_attributes): Likewise.
As part of a process to change how dwarf.c figures out the correct
name for a register I wanted to clean up how we initialise the
register name tracking state.
As part of this I rename init_dwarf_regnames to
init_dwarf_regnames_by_elf_machine_code, later commits will add a
different entry point to initialise the register name state.
There should be no user visible changes after this commit.
binutils/ChangeLog:
* dwarf.c (init_dwarf_regnames): Renamed to...
(init_dwarf_regnames_by_elf_machine_code): ...this.
* dwarf.h (init_dwarf_regnames): Renamed to...
(init_dwarf_regnames_by_elf_machine_code): ...this.
* readelf.c (process_file_header): Update call to use new name.
Change-Id: Ic8d2ef5fb62a8590ecd8cbb7e6258e11c6263594
* readelf.c (IN_RANGE): Rename parameter OFF to NELEM. Add
comment. Catch potential integer overflow and fix off by one
error whilst checking reloc location against section size.
(apply_relocations): Use IN_RANGE macro.
When PT_PHDR isn't covered by a PT_LOAD header, p_vaddr in PT_PHDR
isn't valid but the value might just pass a vaddr test. So test
p_offset as well.
* readelf.c (process_program_headers): Check PT_PHDR p_offset
as well as p_vaddr. Use p_filesz, not p_memsz, in vaddr test.
This functionality will generate a new GNU object attribute for the "data region"
has been added. This object attribute is used
mark whether the compiler has generated code assuming that data could be in the
upper or lower memory regions.
Code which assumes data is always in the lower memory region is incompatible
with code which uses the full memory range for data.
The patch also adds a new assembler directive ".mspabi_attribute" to handle the
existing MSPABI object attributes. GCC will now emit both .gnu_attribute and
.mspabi_attribute directives to indicate what options the source file was
compiled with.
The assembler will now check the values set in these directives against the
options that the it has been invoked with. If there is a discrepancy, the
assembler will exit with an error.
bfd * elf32-msp430.c (elf32_msp430_merge_mspabi_attributes): Rename to..
(elf32_msp430_merge_msp430_attributes): Add support for merging the GNU
object attribute for data region.
binutils* readelf.c (display_msp430_gnu_attribute): New.
(process_arch_specific): Use msp430 specific handler for GNU
attributes.
gas * config/tc-msp430.c (md_parse_option): Set lower_data_region_only to
FALSE if the data region is set to "upper", "either" or "none".
(msp430_object_attribute): New.
(md_pseudo_table): Handle .mspabi_attribute and .gnu_attribute.
(msp430_md_end): Replace hard-coded attribute values with enums.
Handle data region object attribute.
* doc/as.texi: Document MSP430 Data Region object attribute.
* doc/c-msp430.texi: Document the .mspabi_attribute directive.
* testsuite/gas/msp430/attr-430-small-bad.d: New test.
* testsuite/gas/msp430/attr-430-small-bad.l: New test.
* testsuite/gas/msp430/attr-430-small-good.d: New test.
* testsuite/gas/msp430/attr-430-small.s: New test.
* testsuite/gas/msp430/attr-430x-large-any-bad.d: New test.
* testsuite/gas/msp430/attr-430x-large-any-bad.l: New test.
* testsuite/gas/msp430/attr-430x-large-any-good.d: New test.
* testsuite/gas/msp430/attr-430x-large-any.s: New test.
* testsuite/gas/msp430/attr-430x-large-lower-bad.d: New test.
* testsuite/gas/msp430/attr-430x-large-lower-bad.l: New test.
* testsuite/gas/msp430/attr-430x-large-lower-good.d: New test.
* testsuite/gas/msp430/attr-430x-large-lower.s: New test.
* testsuite/gas/msp430/msp430.exp: Run new tests.
include * elf/msp430.h: Add enums for MSPABI and GNU object attribute tag names
and values.
ld * testsuite/ld-msp430-elf/attr-gnu-main.s: New test.
* testsuite/ld-msp430-elf/attr-gnu-obj.s: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-lower-upper.d: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-lower.d: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-upper.d: New test.
* testsuite/ld-msp430-elf/msp430-elf.exp: Run new tests.
For readelf particularly, this is more or less whistling in the dark:
there are hundreds of lines where spaces are used where tabs were used
on adjacent lines.
New in v5.
binutils/
* objdump.c (main): Fix tabdamage.
* readelf.c (CTF_DUMP): Likewise.
(options): Likewise.
(dump_section_as_ctf): Likewise.
We were only loading them when explicitly requested, which leads to
strings that point off into empty space (into the non-loaded "external"
ELF string table). Avoid this unfortunate consequence by loading the
strtab and symtab by default, unless a blank name is given.
binutils/
* readelf.c (dump_ctf_symtab_name): Give default value.
(dump_ctf_strtab_name): Likewise.
(dump_section_as_ctf): Allow for the null string.
The CTF header has before now been thrown away too soon to be dumped
using the ctf_dump() machinery used by objdump and readelf: instead, a
kludge involving debugging-priority dumps of the header offsets on every
open was used.
Replace this with proper first-class dumping machinery just like
everything else in the CTF file, and have objdump and readelf use it.
(The dumper already had an enum value in ctf_sect_names_t for this
purpose, waiting to be used.)
v5: fix tabdamage.
libctf/
* ctf-impl.h (ctf_file_t): New field ctf_openflags.
* ctf-open.c (ctf_bufopen): Set it. No longer dump header offsets.
* ctf-dump.c (dump_header): New function, dump the CTF header.
(ctf_dump): Call it.
(ctf_dump_header_strfield): New function.
(ctf_dump_header_sectfield): Likewise.
binutils/
* objdump.c (dump_ctf_archive_member): Dump the CTF header.
* readelf.c (dump_section_as_ctf): Likewise.
This patch is a reimplementation of [1] which was submitted in 2015 by
Neil Schellenberger. Copyright issue was sorted out [2] last year.
It proposed a new section (.gnu.xhash) and related dynamic tag
(DT_GNU_XHASH). The new section would be virtually identical to the
existing .gnu.hash except for the translation table (xlat) which would
contain correct MIPS .dynsym indexes corresponding to the hashvals in
chains. This is because MIPS ABI imposes a different ordering on the
dynsyms than the one expected by the .gnu.hash section. Another addition
would be a leading word (ngnusyms) which would contain the number of
entries in the translation table.
In this patch, the new section name and dynamic tag are changed to
reflect the fact that the section should be treated as MIPS-specific
(.MIPS.xhash and DT_MIPS_XHASH).
This patch addresses the alignment issue as reported in [3], which is
caused by the leading word added to the .MIPS.xhash section. Leading word
is removed in this patch, and the number of entries in the translation
table is now calculated using DT_MIPS_SYMTABNO dynamic tag (this is
addressed by the corresponding glibc patch).
Suggestions on coding style in [4] were taken into account. Existing
GNU hash testcase was covered, and another one was added in the MIPS
part of the testsuite.
The other major change is reserving MIPS ABI version 5 for .MIPS.xhash,
marking the need of support for .MIPS.xhash in the dynamic linker (again,
addressed in the corresponding glibc patch). This is something which I
am not sure of, especially after reading [5]. I am confused on whether
this ABI version is reserved for IFUNC, or it can be used for this
purpose.
Already mentioned glibc patch is submitted at:
https://sourceware.org/ml/libc-alpha/2019-06/msg00456.html
[1] https://sourceware.org/ml/binutils/2015-10/msg00057.html
[2] https://sourceware.org/ml/binutils/2018-03/msg00025.html
[3] https://sourceware.org/ml/binutils/2016-01/msg00006.html
[4] https://sourceware.org/ml/binutils/2016-02/msg00097.html
[5] https://sourceware.org/ml/libc-alpha/2016-12/msg00853.html
ld * emulparams/elf32bmip.sh: Add .MIPS.xhash section.
* emulparams/elf32bmipn32-defs.sh: Add .MIPS.xhash section.
* emulparams/elf64bmip-defs.sh: Add .MIPS.xhash section.
* emultempl/mipself.em: Remove mips_after_parse function.
* testsuite/ld-elf/hash.d: Update comment.
* testsuite/ld-mips-elf/hash1.d: New test.
* testsuite/ld-mips-elf/hash1.s: Ditto.
* testsuite/ld-mips-elf/hash1a.d: Remove.
* testsuite/ld-mips-elf/hash1b.d: Ditto.
* testsuite/ld-mips-elf/hash1c.d: Ditto
* testsuite/ld-mips-elf/hash2.d: New test.
* testsuite/ld-mips-elf/mips-elf.exp: New tests.
* testsuite/ld-mips-elf/start.s: New test.
bfd * elf-bfd.h (struct elf_backend_data): New members.
* elflink.c (_bfd_elf_link_create_dynamic_sections): Create
.gnu.hash section if necessary.
(struct collect_gnu_hash_codes): New member.
(elf_gnu_hash_process_symidx): New function name.
(elf_renumber_gnu_hash_syms): Ignore local and undefined
symbols. Record xlat location for every symbol which should have
a .MIPS.xhash entry.
(bfd_elf_size_dynamic_sections): Add DT_GNU_HASH dynamic tag to
dynamic section if necessary.
(GNU_HASH_SECTION_NAME): New define.
(bfd_elf_size_dynsym_hash_dynstr): Get .MIPS.xhash section.
Update the section size info.
* elfxx-mips.c (struct mips_elf_hash_sort_data): New members.
(struct mips_elf_link_hash_entry): New member.
(mips_elf_link_hash_newfunc): Initialize .MIPS.xhash translation
table location.
(mips_elf_sort_hash_table): Initialize the pointer to the
.MIPS.xhash section.
(mips_elf_sort_hash_table_f): Populate the .MIPS.xhash
translation table entry with the symbol dynindx.
(_bfd_mips_elf_section_from_shdr): Add SHT_MIPS_XHASH.
(_bfd_mips_elf_fake_sections): Initialize .MIPS.xhash section
info.
(_bfd_mips_elf_create_dynamic_sections): Create .MIPS.xhash
section.
(_bfd_mips_elf_size_dynamic_sections): Add DT_MIPS_XHASH tag to
dynamic section.
(_bfd_mips_elf_finish_synamic_sections): Add DT_MIPS_XHASH.
(_bfd_mips_elf_final_write_processing): Set .MIPS.xhash section
sh_link info.
(_bfd_mips_elf_get_target_dtag): Get DT_MIPS_XHASH tag.
(MIPS_LIBC_ABI_XHASH): New ABI version enum value.
(_bfd_mips_post_process_headers): Mark the ABI version as
MIPS_LIBC_ABI_XHASH if there exists a .MIPS.xhash section,
but not a .hash section.
(_bfd_mips_elf_record_xhash_symbol): New function. Record a
position in the translation table, associated with the hash
entry.
* elfxx-mips.h (literal_reloc_p): Define
elf_backend_record_xhash_symbol backend hook.
* elfxx-target.h: Initialize elf_backend_record_xhash_symbol
backend hook.
include * elf/mips.h (SHT_GNU_XHASH): New define.
(DT_GNU_XHASH): New define.
binutils * readelf.c (get_mips_dynamic_type): Return MIPS_XHASH dynamic type.
(get_mips_section_type_name): Return MI{S_XHASH name string.
(dynamic_section_mips_val): Initialize the .MIPS.xhash dynamic
info.
(process_symbol_table): Initialize the .MIPS.xhash section
pointer. Adjust the readelf output to support the new section.
(process_object): Set the .MIPS.xhash dynamic info to zero.
When printing unknown note types, readelf prints the raw description
section byte-by-byte. However, it does not mask appropriately, e.g. it
prints the byte 'ba' as 'ffffffba'.
* readelf.c (process_note): Mask unknown description data bytes.
I noticed the test for overflow of amt = size * nmemb in get_data
wasn't effective. An obvious example of nmemb = 3 and size = half max
value overflows but doesn't result in amt < nmemb. This patch fixes
this problem and reports a size truncation or overflow rather than out
of memory in more cases.
* readelf.c (get_data): Improve overflow checks.
