-*- text -*-
+* The readelf tool now has a -L or --lint or --enable-checks option which turns
+ on warning messages about possible problems with the file(s) being examined.
+ These checks include things like zero-sized sections, which are allowed by
+ the ELF standard but which nevertheless might be of concern if the user
+ was expecting them to actually contain something.
+
+Changes in 2.34:
+
+* Binutils now supports debuginfod, an HTTP server for distributing
+ ELF/DWARF debugging information as well as source code. When built with
+ debuginfod, readelf and objdump can automatically query debuginfod
+ servers for separate debug files when they otherwise cannot be found.
+ To build binutils with debuginfod, pass --with-debuginfod to configure.
+ This requires libdebuginfod, the debuginfod client library. debuginfod
+ is distributed with elfutils, starting with version 0.178. For more
+ information see https://sourceware.org/elfutils.
+
+* Add --output option to the "ar" program. This option can be used to specify
+ the output directory when extracting members from an archive.
+
+* Add --keep-section option to objcopy and strip. This option keeps the
+ specified section from being removed.
+
+ * Add visualization of jumps inside a function by drawing an ascii character
+ graph between the address and the disassembler column. Enabled via the
+ --visualize-jumps command line option for objdump. Currently supported by
+ the x86, x86_64, and ARM targets. The output looks something like this:
+
+ c6: | | \----------> be 00 00 00 00 mov $0x0,%esi
+ cb: | | /----> 48 8b 3d 00 00 00 00 mov 0x0(%rip),%rdi # d2 <main+0xd2>
+ d2: | | | 31 c0 xor %eax,%eax
+ d4: | | | /-- e8 00 00 00 00 callq d9 <main+0xd9>
+ d9: | | | \-> bf 02 00 00 00 mov $0x2,%edi
+ de: | +-----------|----- e8 00 00 00 00 callq e3 <main+0xe3>
+ e3: | \-----------|----> 48 89 da mov %rbx,%rdx
+ e6: | | be 00 00 00 00 mov $0x0,%esi
+ eb: | \----- eb de jmp cb <main+0xcb>
+ ed: \-------------------> 48 8b 16 mov (%rsi),%rdx
+
+ Additional arguments to the --visualize-jumps option add colors to the
+ output.
+
+Changes in 2.33:
+
+* Add --source-comment[=<txt>] option to objdump which if present,
+ provides a prefix to source code lines displayed in a disassembly.
+
+* Add --set-section-alignment <section-name>=<align> option to objcopy to allow
+ the changing of section alignments.
+
+* Add --verilog-data-width option to objcopy for verilog targets to control
+ width of data elements in verilog hex format.
+
+* Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE)
+ instructions.
+
+* The separate debug info file options of readelf (--debug-dump=links
+ and --debug-dump=follow) and objdump (--dwarf=links and
+ --dwarf=follow-links) will now display and/or follow multiple links if
+ more than one are present in a file. (This usually happens when gcc's
+ -gsplit-dwarf option is used).
+
+ In addition objdump's --dwarf=follow-links now also affects its other
+ display options, so that for example, when combined with --syms it will
+ cause the symbol tables in any linked debug info files to also be
+ displayed. In addition when combined with --disassemble the --dwarf=
+ follow-links option will ensure that any symbol tables in the linked
+ files are read and used when disassembling code in the main file.
+
+ * Add support for dumping types encoded in the Compact Type Format
+ to objdump and readelf.
+
+Changes in 2.32:
+
+* The addr2line, c++filt, nm and objdump tools now have a limit on the
+ maximum amount of recursion that is allowed whilst demangling strings.
+ The value for this limit is defined by the DEMANGLE_RECRUSE_LIMIT
+ constant declared in the include/demangle.h header file. At the time
+ of writing this constant has the value of 2048.
+
+ The --no-recurse-limit option can be used to remove the limit, restoring
+ the behaviour of earlier versions of these tools. This may be needed in
+ order to dmangle truly complicated names, but it also leaves the tools
+ vulnerable to stack exhaustion from maliciously constructed mangled names.
+
+* Objdump's --disassemble option can now take a parameter, specifying the
+ starting symbol for disassembly. Disassembly will continue from this
+ symbol up to the next symbol or the end of the function.
+
+* The MIPS port now supports the Loongson 2K1000 processor which implements
+ the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE, Loongson-ext ASE,
+ Loongson-ext2 ASE and MSA ASE instructions. Add -march=gs264e option for
+ Loongson 2K1000 processor.
+
+* The MIPS port now supports the Loongson 3A2000/3A3000 processor which
+ implements the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE,
+ Loongson-ext ASE and Loongson-ext2 ASE instructions. Add -march=gs464e
+ option for Loongson 3A2000/3A3000 processor.
+
+* The MIPS port now supports the Loongson 3A1000 processor, aka Loongson3a,
+ which implements the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE
+ and Loongson-ext ASE instructions. Add -march=gs464 option for Loongson
+ 3A1000 processor, The -march=loongson3a is an alias of -march=gs464 for
+ compatibility.
+
+* The size tool now has a new output format '--format=GNU' or '-G'. The
+ results are displayed in a similar manor to the default berkeley layout,
+ except read-only data is counted in the data column, not the text column.
+ Additionally the total is only included once.
+
+Changes in 2.31:
+
+* Add support for disassembling netronome Flow Processor (NFP) firmware files.
+
+* The AArch64 port now supports showing disassembly notes which are emitted
+ when inconsistencies are found with the instruction that may result in the
+ instruction being invalid. These can be turned on with the option -M notes
+ to objdump.
+
+* The AArch64 port now emits warnings when a combination of an instruction and
+ a named register could be invalid.
+
+* Added O modifier to ar to display member offsets inside an archive
+
+Changes in 2.30:
+
+* Add --debug-dump=links option to readelf and --dwarf=links option to objdump
+ which displays the contents of any .gnu_debuglink or .gnu_debugaltlink
+ sections.
+
+ Add a --debug-dump=follow-links option to readelf and a --dwarf=follow-links
+ option to objdump which causes indirect links into separate debug info files
+ to be followed when dumping other DWARF sections.
+
+Changes in 2.29:
+
+* The MIPS port now supports microMIPS eXtended Physical Addressing (XPA)
+ instructions for assembly and disassembly.
+
+* The MIPS port now supports the microMIPS Release 5 ISA for assembly and
+ disassembly.
+
+* The MIPS port now supports the Imagination interAptiv MR2 processor,
+ which implements the MIPS32r3 ISA, the MIPS16e2 ASE as well as a couple
+ of implementation-specific regular MIPS and MIPS16e2 ASE instructions.
+
+* The SPARC port now supports the SPARC M8 processor, which implements the
+ Oracle SPARC Architecture 2017.
+
+* The MIPS port now supports the MIPS16e2 ASE for assembly and disassembly.
+
+* Add support for ELF SHF_GNU_MBIND and PT_GNU_MBIND_XXX.
+
+* Add support for the wasm32 ELF conversion of the WebAssembly file format.
+
+* Add --inlines option to objdump, which extends the --line-numbers option
+ so that inlined functions will display their nesting information.
+
+* Add --merge-notes options to objcopy to reduce the size of notes in
+ a binary file by merging and deleting redundant notes.
+
+* Add support for locating separate debug info files using the build-id
+ method, where the separate file has a name based upon the build-id of
+ the original file.
+
+Changes in 2.28:
+
+* This version of binutils fixes a problem with PowerPC VLE 16A and 16D
+ relocations which were functionally swapped, for example,
+ R_PPC_VLE_HA16A performed like R_PPC_VLE_HA16D while R_PPC_VLE_HA16D
+ performed like R_PPC_VLE_HA16A. This could have been fixed by
+ renumbering relocations, which would keep object files created by an
+ older version of gas compatible with a newer ld. However, that would
+ require an ABI update, affecting other assemblers and linkers that
+ create and process the relocations correctly. It is recommended that
+ all VLE object files be recompiled, but ld can modify the relocations
+ if --vle-reloc-fixup is passed to ld. If the new ld command-line
+ option is not used, ld will ld warn on finding relocations inconsistent
+ with the instructions being relocated.
+
+* The nm program has a new command-line option (--with-version-strings)
+ which will display a symbol's version information, if any, after the
+ symbol's name.
+
+* The ARC port of objdump now accepts a -M option to specify the extra
+ instruction class(es) that should be disassembled.
+
+* The --remove-section option for objcopy and strip now accepts section
+ patterns starting with an exclamation point to indicate a non-matching
+ section. A non-matching section is removed from the set of sections
+ matched by an earlier --remove-section pattern.
+
+* The --only-section option for objcopy now accepts section patterns
+ starting with an exclamation point to indicate a non-matching section.
+ A non-matching section is removed from the set of sections matched by
+ an earlier --only-section pattern.
+
+* New --remove-relocations=SECTIONPATTERN option for objcopy and strip.
+ This option can be used to remove sections containing relocations.
+ The SECTIONPATTERN is the section to which the relocations apply, not
+ the relocation section itself.
+
+Changes in 2.27:
+
+* Add a configure option, --enable-64-bit-archive, to force use of a
+ 64-bit format when creating an archive symbol index.
+
+* Add --elf-stt-common= option to objcopy for ELF targets to control
+ whether to convert common symbols to the STT_COMMON type.
+
+Changes in 2.26:
+
+* Add option to objcopy to insert new symbols into a file:
+ --add-symbol <name>=[<section>:]<value>[,<flags>]
+
+* Add support for the ARC EM/HS, and ARC600/700 architectures.
+
+* Extend objcopy --compress-debug-sections option to support
+ --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF
+ targets.
+
+* Add --update-section option to objcopy.
+
+* Add --output-separator option to strings.
+
+Changes in 2.25:
+
+* Add --data option to strings to only print strings in loadable, initialized
+ data sections. Change the default behaviour to be --all, but add a new
+ configure time option of --disable-default-strings-all to restore the old
+ default behaviour.
+
* Add --include-all-whitespace to strings.
* Add --dump-section option to objcopy.
Changes in 2.24:
-* Objcopy now supports wildcard characters in command line options that take
+* Objcopy now supports wildcard characters in command-line options that take
section names.
* Add support for Altera Nios II.
* Add to dlltool .def file feature of aliasing PE internal symbol name by
'== <ID>' option.
-* Add a new command line option -a / --addresses to addr2line to display the
+* Add a new command-line option -a / --addresses to addr2line to display the
address before function name or source filename.
-* Add a new command line option -p / --pretty-print to addr2line to have
+* Add a new command-line option -p / --pretty-print to addr2line to have
a more human readable output.
* The hppa/som targets can now be compiled on any host.
from the static delayimp library, which will import LoadLibraryA and
GetProcAddress from kernel32.
-* Add a new command line option, --insn-width=WIDTH, to objdump to specify
+* Add a new command-line option, --insn-width=WIDTH, to objdump to specify
number of bytes to be displayed on a single line when disassembling
instructions.
* Readelf can now display the relocated contents of a section as a sequence
- of bytes via the --relocated-dump=<name|number> command line option.
+ of bytes via the --relocated-dump=<name|number> command-line option.
-* The gprof program has been given a new command line option:
+* The gprof program has been given a new command-line option:
--external-symbols-table=<filename> which reads in symbols from a specified
file.
for objcopy.
* Add --file-alignment, --heap, --image-base, --section-alignment,
- --stack and --subsystem command line options to objcopy, which will
+ --stack and --subsystem command-line options to objcopy, which will
set PE optional header.
* Option --dwarf/-W of objdump is now as flexible as readelf --debug-dump/-w.
* Add new option --use-nul-prefixed-import-tables to dlltool to allow fall-
back to old import table generation with null element prefix.
-* Added --identify-strict switch to cause --identify <implib> to
+* Added --identify-strict switch to cause --identify <implib> to
report an error when the import library is associated with
multiple DLLs.
object files rather than the files themselves and which contain a
flattened symbol index for all objects, and archives, which have been
added to the archive.
-
+
* Added -F switch to objdump to include file offsets in the disassembly.
* Added -c switch to readelf to allow string dumps of archive symbol index.
re-compiled by windres without lossing resources or compilation errors.
Some problems on dialog resource translations are corrected.
-* Add --extract-symbol command line option to objcopy, which will
+* Add --extract-symbol command-line option to objcopy, which will
strip everything out of an ordinary object file or executable except
for its symbol table. Files containing just symbols can be useful
to some OSes.
* Add "--globalize-symbol <name>" and "--globalize-symbols <filename>" switches
to objcopy to convert local symbols into global symbols.
-
+
* gprof now allows input files to have histogram records for
- several memory ranges, provided those ranges are disjoint.
+ several memory ranges, provided those ranges are disjoint.
Changes in 2.16:
* readelf can now display address ranges from .debug_range sections. This
happens automatically when a DW_AT_range attribute is encountered. The
- command line switch --debug-dump=Ranges (or -wR) can also be used to display
+ command-line switch --debug-dump=Ranges (or -wR) can also be used to display
the contents of the .debug_range section.
* nm and objdump now have a switch "--special-syms" to enable the displaying of
* objcopy now accepts --add-gnu-debuglink=<file> to insert a .gnu_debuglink
section into a (presumably stripped) executable. This allows the debug
information for the file to be held in a separate file.
-
+
* BFD marks the sections .comment and .note as 'n' in the BSD/POSIX
single-character representation. This can be checked by running nm
with the -a switch.
* readelf: Support added for DWARF 2.1 extensions. Support added for
displaying the contents of .debug.macinfo sections.
-* New command line switches added to objcopy to allow symbols to be kept as
+* New command-line switches added to objcopy to allow symbols to be kept as
global symbols, and also to specify files containing lists of such symbols.
by Honda Hiroki.
* Support for OpenRISC by Johan Rydberg.
-* New command line switch to objcopy --alt-machine-code which creates a binary
+* New command-line switch to objcopy --alt-machine-code which creates a binary
with an alternate machine code if one is defined in the architecture
description. Only supported for ELF targets. By Alexandre Oliva.
-* New command line switch to objcopy -B (or --binary-architecture) which sets
+* New command-line switch to objcopy -B (or --binary-architecture) which sets
the architecture of the output file to the given argument. This option only
makes sense, if the input target is binary. Otherwise it is ignored.
By Stefan Geuken.
* Add support for ARM v5t and v5te architectures and Intel's XScale ARM
extenstions.
-* Add --srec-len and --srec-forceS3 command line switch to objcopy.
+* Add --srec-len and --srec-forceS3 command-line switch to objcopy.
By Luciano Gemme.
* Support for the MIPS32, by Anders Norlander.
* Support for 64-bit ELF on HPPA.
-* New command line switch to objdump --file-start-context which shows the
+* New command-line switch to objdump --file-start-context which shows the
entire file contents up to the source line first encountered for a given
file.
-* New command line switch to objdump -M (or --disassembler-options) which takes
+* New command-line switch to objdump -M (or --disassembler-options) which takes
a parameter which can then be interpreted on a per-target basis by the
disassembler. Used by ARM targets to select register name sets, ISA, APCS or
raw verions.
and/or local symbols only. They now also support long options.
\f
-Copyright (C) 2012-2014 Free Software Foundation, Inc.
+Copyright (C) 2012-2020 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
projects / deliverable / binutils-gdb.git / blobdiff