-*- text -*-
+* Update elfedit and readelf with LAM_U48 and LAM_U57 support.
+
+* Nm has a new command line option: --ifunc-chars=CHARS. This specifies a
+ string of one or two characters. The first character is used as the type
+ character when displaying global ifunc symbols. The second character, if
+ present is used when displaying local ifunc symbols.
+
+ In addition a new configure time option --enable-f-for-ifunc-symbols has been
+ created, which if used will change nm's default characters for ifunc symbols
+ from i (both local and global) to F (global) and f (local).
+
+* The ar tool's previously unused l modifier is now used for specifying
+ dependencies of a static library. The arguments of this option
+ (or --record-libdeps long form option) will be stored verbatim in the
+ __.LIBDEP member of the archive, which the linker may read at link time.
+
+* Readelf can now display the contents of LTO symbol table sections when asked
+ to do so via the --lto-syms command line option.
+
+* Readelf now accepts the -C command line option to enable the demangling of
+ symbol names. In addition the --demangle=<style>, --no-demangle,
+ --recurse-limit and --no-recurse-limit options are also now availale.
+
+* Add support for the SHF_GNU_RETAIN ELF section flag.
+ This flag specifies that the section should not be garbage collected by the
+ linker.
+
+Changes in 2.35:
+
+* Changed readelf's display of symbol names when wide mode is not enabled.
+ If the name is too long it will be truncated and the last five characters
+ replaced with "[...]". The old behaviour of displaying 5 more characters but
+ not indicating that truncation has happened can be restored by the use of the
+ -T or --silent-truncation options.
+
+* X86 NaCl target support is removed.
+
+* 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.
and/or local symbols only. They now also support long options.
\f
-Copyright (C) 2012-2018 Free Software Foundation, Inc.
+Copyright (C) 2012-2021 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 / thirdparty / binutils-gdb.git / blobdiff