* dwarf.c (dwarf_select_sections_by_name): If the entry's value is
zero then clear the corresponding variable.
(dwarf_select_sections_by_letters): Likewise.
* testsuite/binutils-all/debuginfo.exp: Expect -WE and -wE
debuginfod tests to fail.
PR 29267
* dwarf.c (display_debug_rnglists): New function, broken out of..
(display_debug_ranges): ... here.
(read_and_display_attr_value): Correct calculation of index
displayed for DW_FORM_loclistx and DW_FORM_rnglistx.
* testsuite/binutils-all/x86-64/pr26808.dump: Update expected
output.
* dwarf.c (fetch_indexed_string): Do not use length of first table
in string section as the length of every table in the section.
* testsuite/binutils-all/pr26112.r: Update expected output.
* dwarf.c (fetch_indexed_string): Added new parameter
str_offsets_base to calculate the string offset.
(read_and_display_attr_value): Read DW_AT_str_offsets_base
attribute.
(process_debug_info): While allocating memory and initializing
debug_information, do it for do_debug_info also, if its true.
(load_separate_debug_files): Load .debug_str_offsets if exists.
* dwarf.h (struct debug_info): Add str_offsets_base field.
Using xmalloc makes the null check redundant since failing allocation
will exit the program. Instead use malloc and let the error be
conveyed up the call chain.
* dwarf.h (struct debug_info): Add rnglists_base field.
* dwarf.c (read_and_display_attr_value): Read attribute DW_AT_rnglists_base.
(display_debug_rnglists_list): While handling DW_RLE_base_addressx,
DW_RLE_startx_endx, DW_RLE_startx_length items, pass the proper parameter
value to fetch_indexed_addr(), i.e. fetch the proper entry in .debug_addr section.
(display_debug_ranges): Add rnglists_base to the .debug_rnglists base address.
(load_separate_debug_files): Load .debug_addr section, if exists.
* dwarf.c (dwarf_select_sections_by_names): Return zero if no
sections were selected.
(dwarf_select_sections_by_letters): Likewise.
* dwarf.h: (dwarf_select_sections_by_names): Update prototype.
(dwarf_select_sections_by_letters): Update prototype.
* objdump.c (might_need_separate_debug_info): New function.
(dump_bfd): Call new function before attempting to load separate
debug info files.
(main): Do not enable dwarf section dumping for -WK or -WN.
* readelf.c (parse_args): Do not enable dwarf section dumping for
-wK or -wN.
(might_need_separate_debug_info): New function.
(process_object): Call new function before attempting to load
separate debug info files.
* testsuite/binutils-all/debuginfo.exp: Expect -WE and -wE
debuginfod tests to pass.
* testsuite/binutils-all/objdump.Wk: Add extra regexps.
* testsuite/binutils-all/readelf.k: Add extra regexps.
PR 29135
* nm.c (non_weak): New variable.
(filter_symbols): When non-weak is true, ignore weak symbols.
(long_options): Add --no-weak.
(usage): Mention --no-weak.
(main): Handle -W/--no-weak.
* doc/binutils.texi: Document new feature.
* NEWS: Mention the new feature.
* testsuite/binutils-all/nm.exp: Add test of new feature.
* testsuite/binutils-all/no-weak.s: New test source file.
PR 29072
bfd * elflink.c (bfd_elf_size_dynamic_sections): Display a note to the
user that the current ehaviour of creating an executable stack
because of a missing .note.GNU-stack section is deprecated and
will be changed in a future release.
binutils* testsuite/lib/binutils-common.exp (prune_warnings_extra): Filter
out notes about the executable stacjk behaviour beign deprecated.
ld * testsuite/ld-elf/pr29072.b.warn: Update to include the note
about the linker's behaviour being depreccated.
PR 28981
* dwarf.c (fetch_indexed_value): Rename to fecth_indexed_addr and
return the address, rather than a string.
(fetch_indexed_value): New function - returns a value indexed by a
DW_FORM_loclistx or DW_FORM_rnglistx form.
(read_and_display_attr_value): Add support for DW_FORM_loclistx
and DW_FORM_rnglistx.
(process_debug_info): Load the loclists and rnglists sections.
(display_loclists_list): Add support for DW_LLE_base_addressx,
DW_LLE_startx_endx, DW_LLE_startx_length and
DW_LLE_default_location.
(display_offset_entry_loclists): New function. Displays a
.debug_loclists section that contains offset entry tables.
(display_debug_loc): Call the new function.
(display_debug_rnglists_list): Add support for
DW_RLE_base_addressx, DW_RLE_startx_endx and DW_RLE_startx_length.
(display_debug_ranges): Display the contents of the section's
header.
* dwarf.h (struct debug_info): Add loclists_base field.
* testsuite/binutils-all/dw5.W: Update expected output.
* testsuite/binutils-all/x86-64/pr26808.dump: Likewise.
This core dump note contains the value of the base address of the %fs
and %gs segments for both i386 and amd64 core dumps. It is primarily
useful in resolving the address of TLS variables in core dumps.
binutils/ChangeLog:
* readelf.c (get_freebsd_elfcore_note_type): Handle
NT_FREEBSD_X86_SEGBASES.
include/ChangeLog:
* elf/common.h (NT_FREEBSD_X86_SEGBASES): Define.
The AMDGPU HSA OS ABI (code object v3 and above) defines the
NT_AMDGPU_METADATA ELF note [1]. The content is a msgpack object
describing, among other things, the kernels present in the code object
and how to call them.
I think it would be useful for readelf to be able to display the content
of those notes. msgpack is a structured format, a bit like JSON, except
not text-based. It is therefore possible to dump the contents in
human-readable form without knowledge of the specific layout of the
note.
Add configury to binutils to optionally check for the msgpack C library
[2]. Add There is a new --with{,out}-msgpack configure flag, and the actual
library lookup is done using pkg-config.
If msgpack support is enabled, dumping a NT_AMDGPU_METADATA note looks
like:
$ readelf --notes amdgpu-code-object
Displaying notes found in: .note
Owner Data size Description
AMDGPU 0x0000040d NT_AMDGPU_METADATA (code object metadata)
{
"amdhsa.kernels": [
{
".args": [
{
".address_space": "global",
".name": "out.coerce",
".offset": 0,
".size": 8,
".value_kind": "global_buffer",
},
<snip>
If msgpack support is disabled, dump the contents as hex, as is done
with notes that are not handled in a special way. This allows one to
decode the contents manually (maybe using a command-line msgpack
decoder) if really needed.
[1] https://llvm.org/docs/AMDGPUUsage.html#code-object-metadata
[2] https://github.com/msgpack/msgpack-c/tree/c_master
binutils/ChangeLog:
* Makefile.am (readelf_CFLAGS): New.
(readelf_LDADD): Add MSGPACK_LIBS.
* Makefile.in: Re-generate.
* config.in: Re-generate.
* configure: Re-generate.
* configure.ac: Add --with-msgpack flag and check for msgpack
using pkg-config.
* readelf.c: Include msgpack.h if HAVE_MSGPACK.
(print_note_contents_hex): New.
(print_indents): New.
(dump_msgpack_obj): New.
(dump_msgpack): New.
(print_amdgpu_note): New.
(process_note): Handle NT_AMDGPU_METADATA note contents.
Use print_note_contents_hex.
Change-Id: Ia60a654e620bc32dfdb1bccd845594e2af328b84
Handle the NT_AMDGPU_METADATA note, which is described here:
https://llvm.org/docs/AMDGPUUsage.html#code-object-v3-note-records
As of this patch, just print out the name, not the contents, which is in
the msgpack format.
binutils/ChangeLog:
* readelf.c (get_amdgpu_elf_note_type): New.
(process_note): Handle "AMDGPU" notes.
include/ChangeLog:
* elf/amdgcn.h (NT_AMDGPU_METADATA): New.
Change-Id: Id2dba2e2aeaa55ef7464fb35aee9c7d5f96ddb23
Decode and print the AMDGPU-specific fields of e_flags, as documented
here:
https://llvm.org/docs/AMDGPUUsage.html#header
That is:
- The specific GPU model
- Whether the xnack and sramecc features are enabled
The result looks like:
- Flags: 0x52f
+ Flags: 0x52f, gfx906, xnack any, sramecc any
The flags for the "HSA" OS ABI are properly versioned and documented on
that page. But the NONE, PAL and MESA3D OS ABIs are not well documented
nor versioned. Taking a peek at the LLVM source code, we see that they
encode their flags the same way as HSA v3. For example, for PAL:
c8b614cd74/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp (L601)
So for those other OS ABIs, we read them the same as HSA v3.
binutils/ChangeLog:
* readelf.c: Include elf/amdgcn.h.
(decode_AMDGPU_machine_flags): New.
(get_machine_flags): Handle flags for EM_AMDGPU machine type.
include/ChangeLog:
* elf/amdgcn.h: Add EF_AMDGPU_MACH_AMDGCN_* and
EF_AMDGPU_FEATURE_* defines.
Change-Id: Ib5b94df7cae0719a22cf4e4fd0629330e9485c12
When the machine is EM_AMDGPU, handle the various OS ABIs described
here:
https://llvm.org/docs/AMDGPUUsage.html#header
For a binary with the HSA OS ABI, the change looks like:
- OS/ABI: <unknown: 40>
+ OS/ABI: AMD HSA
binutils/ChangeLog:
* readelf.c (get_osabi_name): Handle EM_AMDGPU OS ABIs.
include/ChangeLog:
* elf/common.h (ELFOSABI_AMDGPU_PAL, ELFOSABI_AMDGPU_MESA3D):
New.
Change-Id: I383590c390f7dc2fe0f902f50038735626d71863
I noticed that, occasionally, dwarf-mode would think that the objdump
subprocess was still running after it had clearly exited. I managed
to reliably reproduce this today and learned that a process sentinel
is not guaranteed to be run with the current buffer set to the process
buffer. This patch fixes the problem.
I've bumped the version number of dwarf-mode.el to make it easier to
install for users who already have an earlier one installed.
I'm checking this in.
2022-03-15 Tom Tromey <tromey@adacore.com>
* dwarf-mode.el: Now 1.7.
(dwarf--sentinel): Switch to the process buffer.
* dwarf.c (use_debuginfod): New variable. Set to 1.
(load_separate_debug_info): Only call
debuginfod_fetch_separate_debug_info is use_debuginfod is true.
(dwarf_select_sections_by_names): Add do-not-use-debuginfod and
use-debuginfod options.
(dwarf_select_sections_by_letters): Add D and E options.
* dwarf.h (use_debuginfod): New extern.
* objdump.c (usage): Mention the new options.
* readelf.c (usage): Likewise.
* doc/binutils.texi: Document the new options.
* doc/debug-options.texi: Describe the new options.
* NEWS: Mention the new feature.
* testsuite/binutils-all/debuginfod.exp: Add tests of the new
options.
Correct issues with INSN2_ALIAS annotation for branch instructions:
- regular MIPS BEQZ/L and BNEZ/L assembly instructions are idioms for
BEQ/L and BNE/L respectively with the `rs' operand equal to $0,
- microMIPS 32-bit BEQZ and BNEZ assembly instructions are idioms for
BEQ and BNE respectively with the `rt' operand equal to $0,
- regular MIPS BAL assembly instruction is an idiom for architecture
levels of up to the MIPSr5 ISA and a machine instruction on its own
from the MIPSr6 ISA up.
Add missing annotation to BEQZ/L and BNEZ/L accordingly then and add a
new entry for BAL for the MIPSr6 ISA, correcting a disassembly bug:
$ mips-linux-gnu-objdump -m mips:isa64r6 -M no-aliases -d bal.o
bal.o: file format elf32-tradlittlemips
Disassembly of section .text:
00000000 <foo>:
0: 04110000 0x4110000
...
$
Add test cases accordingly.
Parts for regular MIPS BEQZ/L and BNEZ/L instructions from Sagar Patel.
2022-03-06 Maciej W. Rozycki <macro@orcam.me.uk>
binutils/
* testsuite/binutils-all/mips/mips1-branch-alias.d: New test.
* testsuite/binutils-all/mips/mips1-branch-noalias.d: New test.
* testsuite/binutils-all/mips/mips2-branch-alias.d: New test.
* testsuite/binutils-all/mips/mips2-branch-noalias.d: New test.
* testsuite/binutils-all/mips/mips32r6-branch-alias.d: New test.
* testsuite/binutils-all/mips/mips32r6-branch-noalias.d: New
test.
* testsuite/binutils-all/mips/micromips-branch-alias.d: New
test.
* testsuite/binutils-all/mips/micromips-branch-noalias.d: New
test.
* testsuite/binutils-all/mips/mips-branch-alias.s: New test
source.
* testsuite/binutils-all/mips/micromips-branch-alias.s: New test
source.
* testsuite/binutils-all/mips/mips.exp: Run the new tests.
2022-03-06 Sagar Patel <sagarmp@cs.unc.edu>
Maciej W. Rozycki <macro@orcam.me.uk>
opcodes/
* mips-opc.c (mips_builtin_opcodes): Fix INSN2_ALIAS annotation
for "bal", "beqz", "beqzl", "bnez" and "bnezl" instructions.
* micromips-opc.c (micromips_opcodes): Likewise for "beqz" and
"bnez" instructions.
Clangd shows a warning about misleading indentation in this file, fix
it.
binutils/ChangeLog:
* readelf.c (process_dynamic_section): Fix indentation.
Change-Id: I43a7f4f4c75dd080af614222b980526f5debf297
In many ar implementations (FreeBSD, elfutils, etc), -T has the X/Open
System Interface specified semantics. Therefore -T for thin archives is
not recommended for portability. -T is deprecated without diagnostics.
PR binutils/28759
* ar.c (long_options): Add --thin.
(usage) Add --thin. Deprecate -T without diagnostics.
* doc/binutils.texi: Add doc.
* NEWS: Mention --thin.
* binutils/testsuite/binutils-all/ar.exp: Add tests.
ld * pe-dll.c (make_head): Prefix the symbol name with the dll name.
(make_tail, make_one, make_singleton_name_thunk): Likewise.
(make_import_fixup_entry, make_runtime_pseudo_reloc): Likewise.
(pe_create_runtime_relocator_reference): Likewise.
(pe_dll_generate_implib): Set dll_symname_len.
(pe_process_import_defs): Likewise.
binutils
* dlltool.c (main): If a prefix has not been provided, attempt to
use a deterministic one based upon the dll name.
The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.
The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.
* dwarf.c (find_debug_info_for_offset): Use dwarf_vma type for
offsets, sizes and ranges.
(display_loc_list): Likewise. Also use print_dwarf_vma to print
the offset.
(display_loclists_list): Likewise.
(display_loc_list_dwo): Likewise.
(display_debug_str): Likewise.
(display_debug_aranges): Likewise.
(display_debug_ranges_list): Likewise.
(display_debug_rnglists_list): Likewise.
(display_debug_ranges): Likewise.
