3 * Add "-W/--dwarf" to objdump to display the contents of the DWARF
6 * Add "-t/--section-details" to readelf to display section details.
7 "-N/--full-section-name" is deprecated.
9 * powerpc-linux ld now supports a variant form of PLT and GOT for the security
10 conscious. This form will automatically be chosen when ld detects that all
11 code in regular object files was generated by gcc -msecure-plt. The old PLT
12 and GOT may be forced by a new ld option, --bss-plt.
14 * Add "-i/--inlines" to addr2line to print enclosing scope information
15 for inlined function chains, back to first non-inlined function.
17 * Add "-N/--full-section-name" to readelf to display full section name.
19 * Add "-M entry:<addr>" switch to objdump to specify a function entry address
20 when disassembling VAX binaries.
22 * Add "--globalize-symbol <name>" and "--globalize-symbols <filename>" switches
23 to objcopy to convert local symbols into global symbols.
27 * Add "-g/--section-groups" to readelf to display section groups.
29 * objcopy recognizes two new options --strip-unneeded-symbol and
30 --strip-unneeded-symbols, namely for use together with the wildcard
31 matching the original --strip-symbol/--strip-symbols provided, but
32 retaining any symbols matching but needed by relocations.
34 * readelf can now display address ranges from .debug_range sections. This
35 happens automatically when a DW_AT_range attribute is encountered. The
36 command line switch --debug-dump=Ranges (or -wR) can also be used to display
37 the contents of the .debug_range section.
39 * nm and objdump now have a switch "--special-syms" to enable the displaying of
40 symbols which the target considers to be special. By default these symbols
41 are no longer displayed. Currently the only special symbols are the Mapping
42 symbols used by the ARM port to mark transitions between text and data and
43 between ARM and THUMB code.
45 * dlltool has a switch "--ext-prefix-alias <prefix>" to generate additional
46 import and export symbols with <preifx> prepended to them.
50 * objcopy for MIPS targets now accepts "-M no-aliases" as an option to the
51 disassembler to print the "raw" mips instruction mnemonic instead of some
52 pseudo instruction name. I.E. print "daddu" or "or" instead of "move",
53 "sll" instead of "nop", etc.
55 * objcopy and strip can now take wildcard patterns in symbol names specified on
56 the command line provided that the --wildcard switch is used to enable them.
58 * readelf can now parse archives.
60 * objdump now accepts --debugging-tags to print the debug information in a
61 format compatible with ctags tool.
63 * objcopy and strip now accept --only-keep-debug to create a file containing
64 those sections that would be stripped out by --strip-debug. The idea is that
65 this can be used in conjunction with the --add-gnu-debuglink switch to create
66 a two part program distribution - one a stripped executable and the other the
69 * objcopy now accepts --add-gnu-debuglink=<file> to insert a .gnu_debuglink
70 section into a (presumably stripped) executable. This allows the debug
71 information for the file to be held in a separate file.
73 * BFD marks the sections .comment and .note as 'n' in the BSD/POSIX
74 single-character representation. This can be checked by running nm
79 * Added --info switch to objcopy and strip.
81 * Support for Vitesse IQ2000 added by Red Hat.
83 * Added 'S' encoding to strings to allow the display of 8-bit characters.
85 * Added --prefix-symbols=<text>, --prefix-sections=<text> and
86 --prefix-alloc-sections=<text> to objcopy.
88 * readelf can handle the extensions to the DWARF2 spec used by the Unified
91 * BFD no longer declares a "boolean" type, to avoid clashes with other
92 headers that declare the same. Users of BFD should replace boolean,
93 false and true, with int, 0 and 1, or define their own boolean type.
95 * Support for IP2K added by Denis Chertykov.
99 * Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
102 Changes in version 2.12:
104 * Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
106 * size: Add --totals to display summary of sizes (Berkeley format only).
108 * readelf: Add --wide option to not break section header or segment listing
109 lines to fit into 80 columns.
111 * strings: Add --encoding to display wide character strings. By Markus Kuhn.
113 * objcopy: Add --rename-section to change section names.
115 * readelf: Support added for DWARF 2.1 extensions. Support added for
116 displaying the contents of .debug.macinfo sections.
118 * New command line switches added to objcopy to allow symbols to be kept as
119 global symbols, and also to specify files containing lists of such symbols.
122 * Support for OpenRISC by Johan Rydberg.
124 * New command line switch to objcopy --alt-machine-code which creates a binary
125 with an alternate machine code if one is defined in the architecture
126 description. Only supported for ELF targets. By Alexandre Oliva.
128 * New command line switch to objcopy -B (or --binary-architecture) which sets
129 the architecture of the output file to the given argument. This option only
130 makes sense, if the input target is binary. Otherwise it is ignored.
133 * Support for PDP-11 by Lars Brinkhoff.
135 Changes in binutils 2.11:
137 * Add support for ARM v5t and v5te architectures and Intel's XScale ARM
140 * Add --srec-len and --srec-forceS3 command line switch to objcopy.
143 * Support for the MIPS32, by Anders Norlander.
145 * Support for the i860, by Jason Eckhardt.
147 * Support for CRIS (Axis Communications ETRAX series).
149 Changes in binutils 2.10:
151 * Support for 64-bit ELF on HPPA.
153 * New command line switch to objdump --file-start-context which shows the
154 entire file contents up to the source line first encountered for a given
157 * New command line switch to objdump -M (or --disassembler-options) which takes
158 a parameter which can then be interpreted on a per-target basis by the
159 disassembler. Used by ARM targets to select register name sets, ISA, APCS or
162 * objdump support for -mi386:intel which causes disassembly to be displayed
165 * New program: readelf. This displays the contents of ELF format files,
166 regardless of target machine.
168 * objcopy now takes --change-section-lma, --change-section-vma, and
169 --change-section-address options. The old --adjust-section-vma option is
170 equivalent to --change-section-address. The other --adjust-* options are now
171 renamed to --change-*, although --adjust-* continues to work.
173 * objcopy has a --redefine-sym option that lets you rename symbols.
175 * objcopy now takes a -j/--only-section option to copy only the specified
178 * dlltool now supports the IMPORTS command.
180 * dlltool now takes --export-all-symbols, --no-export-all-symbols,
181 --exclude-symbols, and --no-default-excludes options.
183 Changes in binutils 2.9:
185 * Added windres program, which can be used to manipulate resources in WIN32
186 files as used on Windows 95 and Windows NT.
188 * The objcopy --gap-fill and --pad-to options operate on the LMA rather than
189 the VMA of the sections.
191 * Added S modifier to ar to not build a symbol table.
193 Changes in binutils 2.8:
195 * The objdump disassembly format has been changed, and hopefully improved. Use
196 the new --prefix-addresses option to get the old format. There are also new
197 --disassemble-zeroes and --no-show-raw-insn options which affect disassembler
200 * Formats may now be specified as configuration triplets. For example,
201 objdump -b i386-pc-linux. The triplets are not passed through config.sub,
202 so they must be in canonical form.
204 * Added new addr2line program. This uses the debugging information to convert
205 an address into a file name and line number within a program.
207 * Added --change-leading-char argument to objcopy.
209 * Added --weaken argument to objcopy.
211 * objdump --dynamic-reloc now works on ELF executables and shared libraries.
213 * Added --adjust-vma option to objdump.
215 * Added -C/--demangle option to objdump.
217 * Added -p/--preserve-dates option to strip and objcopy.
219 Changes in binutils 2.7:
221 * Added --enable-shared and --enable-commonbfdlib options to configure.
223 * Added --debugging argument to objdump and objcopy.
225 * Added --defined-only argument to nm.
227 * Added --remove-leading-char argument to objcopy.
229 * The objdump --line-numbers option is now meaningful with --reloc.
231 * Added --line-numbers option to nm.
233 * Added --endian/-EB/-EL option to objdump.
235 * Added support for Alpha OpenVMS/AXP.
237 Changes in binutils 2.6:
239 * Added -N/--strip-symbol and -K/--keep-symbol arguments to strip and objcopy.
241 * Added several arguments to objcopy to provide some control over how the new
242 file is laid out in memory. Also added binary output format to BFD to permit
243 generating plain binary files.
245 * Added --start-address and --stop-address options to objdump.
247 * ar and ranlib now work on AIX. The tools are now built by default on AIX.
249 Changes in binutils 2.5:
251 * Changed objdump -dr to dump the relocs interspersed with the assembly
252 listing, for a more useful listing of relocatable files.
254 * Changed objdump -d/--disassemble to only disassemble SEC_CODE sections.
255 Added -D/--disassemble-all option to disassemble all sections.
257 * Added --size-sort option to nm.
259 * strip and objcopy should now be able to handle dynamically linked ELF
262 Changes in binutils 2.4:
264 * Support for HP-PA (by Jeff Law), i386 Mach (by David Mackenzie), RS/6000 and
265 PowerPC (except ar and ranlib; by Ian Taylor).
267 * Support for Irix 5.
269 * Programs `strip' and `objcopy' will not attempt to write dynamically linked
270 ELF output files, since BFD currently can't create them properly.
272 Changes in binutils 2.3:
274 * A new --stabs argument has been added to objdump to dump stabs sections in
277 * A new program, nlmconv, has been added. It can convert object files into
278 Novell NetWare Loadable Modules.
280 * The strings program has been added.
282 Changes in binutils 2.2:
284 * The 'copy' program has been renamed to 'objcopy', for consistency with
285 'objdump', and because 'copy' might more plausibly be used as a synonym for
288 * The new stand-alone program c++filt is a filter that converts encoded
289 (mangled) C++ assembly-level identifiers to user-level names. (Note: This
290 may get moved to the gcc distribution.)
292 * nm -o on an archive now prefixes each line with the archive name, matching
293 the output from BSD nm.
295 * ar (and ld) can now read (but not write) BSD4.4-style archives.
297 * New support for H8500, Z8000, and the Hitach SH.
299 * Dis-assembler interface changed to allow sharing with gdb.
301 * There is new Elf code, but it is not yet ready for general use.
303 * There is the beginnings of a test suite.
305 Changes in binutils 2.1:
307 * There is now support for writing ECOFF files, so ld and the other utilities
308 should work on Risc/Ultrix and Irix. Please let us know how well this works.
310 * ar now automatically creates a symbol table (a __.SYMDEF member, in the BSD
311 version), if there are any object files in the archive. So running ranlib is
312 now redundant (unless the non-standard q command is used). This is required
313 for Posix.2 conformance.
315 * The archive-reading code now reads both BSD-style and SYSV-style archives
316 independently of the selected target format. This is to encourage people to
317 switch to SYSV-format, which has a number of advantages.
319 * The strip and copy programs now have options to remove debug-symbols only
320 and/or local symbols only. They now also support long options.