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1 | -*- text -*- | |
2 | ||
3 | * Update elfedit and readelf with LAM_U48 and LAM_U57 support. | |
4 | ||
5 | * Nm has a new command line option: --ifunc-chars=CHARS. This specifies a | |
6 | string of one or two characters. The first character is used as the type | |
7 | character when displaying global ifunc symbols. The second character, if | |
8 | present is used when displaying local ifunc symbols. | |
9 | ||
10 | In addition a new configure time option --enable-f-for-ifunc-symbols has been | |
11 | created, which if used will change nm's default characters for ifunc symbols | |
12 | from i (both local and global) to F (global) and f (local). | |
13 | ||
14 | * The ar tool's previously unused l modifier is now used for specifying | |
15 | dependencies of a static library. The arguments of this option | |
16 | (or --record-libdeps long form option) will be stored verbatim in the | |
17 | __.LIBDEP member of the archive, which the linker may read at link time. | |
18 | ||
19 | * Readelf can now display the contents of LTO symbol table sections when asked | |
20 | to do so via the --lto-syms command line option. | |
21 | ||
22 | * Readelf now accepts the -C command line option to enable the demangling of | |
23 | symbol names. In addition the --demangle=<style>, --no-demangle, | |
24 | --recurse-limit and --no-recurse-limit options are also now availale. | |
25 | ||
26 | * Add support for the SHF_GNU_RETAIN ELF section flag. | |
27 | This flag specifies that the section should not be garbage collected by the | |
28 | linker. | |
29 | ||
30 | Changes in 2.35: | |
31 | ||
32 | * Changed readelf's display of symbol names when wide mode is not enabled. | |
33 | If the name is too long it will be truncated and the last five characters | |
34 | replaced with "[...]". The old behaviour of displaying 5 more characters but | |
35 | not indicating that truncation has happened can be restored by the use of the | |
36 | -T or --silent-truncation options. | |
37 | ||
38 | * X86 NaCl target support is removed. | |
39 | ||
40 | * The readelf tool now has a -L or --lint or --enable-checks option which turns | |
41 | on warning messages about possible problems with the file(s) being examined. | |
42 | These checks include things like zero-sized sections, which are allowed by | |
43 | the ELF standard but which nevertheless might be of concern if the user | |
44 | was expecting them to actually contain something. | |
45 | ||
46 | Changes in 2.34: | |
47 | ||
48 | * Binutils now supports debuginfod, an HTTP server for distributing | |
49 | ELF/DWARF debugging information as well as source code. When built with | |
50 | debuginfod, readelf and objdump can automatically query debuginfod | |
51 | servers for separate debug files when they otherwise cannot be found. | |
52 | To build binutils with debuginfod, pass --with-debuginfod to configure. | |
53 | This requires libdebuginfod, the debuginfod client library. debuginfod | |
54 | is distributed with elfutils, starting with version 0.178. For more | |
55 | information see https://sourceware.org/elfutils. | |
56 | ||
57 | * Add --output option to the "ar" program. This option can be used to specify | |
58 | the output directory when extracting members from an archive. | |
59 | ||
60 | * Add --keep-section option to objcopy and strip. This option keeps the | |
61 | specified section from being removed. | |
62 | ||
63 | * Add visualization of jumps inside a function by drawing an ascii character | |
64 | graph between the address and the disassembler column. Enabled via the | |
65 | --visualize-jumps command line option for objdump. Currently supported by | |
66 | the x86, x86_64, and ARM targets. The output looks something like this: | |
67 | ||
68 | c6: | | \----------> be 00 00 00 00 mov $0x0,%esi | |
69 | cb: | | /----> 48 8b 3d 00 00 00 00 mov 0x0(%rip),%rdi # d2 <main+0xd2> | |
70 | d2: | | | 31 c0 xor %eax,%eax | |
71 | d4: | | | /-- e8 00 00 00 00 callq d9 <main+0xd9> | |
72 | d9: | | | \-> bf 02 00 00 00 mov $0x2,%edi | |
73 | de: | +-----------|----- e8 00 00 00 00 callq e3 <main+0xe3> | |
74 | e3: | \-----------|----> 48 89 da mov %rbx,%rdx | |
75 | e6: | | be 00 00 00 00 mov $0x0,%esi | |
76 | eb: | \----- eb de jmp cb <main+0xcb> | |
77 | ed: \-------------------> 48 8b 16 mov (%rsi),%rdx | |
78 | ||
79 | Additional arguments to the --visualize-jumps option add colors to the | |
80 | output. | |
81 | ||
82 | Changes in 2.33: | |
83 | ||
84 | * Add --source-comment[=<txt>] option to objdump which if present, | |
85 | provides a prefix to source code lines displayed in a disassembly. | |
86 | ||
87 | * Add --set-section-alignment <section-name>=<align> option to objcopy to allow | |
88 | the changing of section alignments. | |
89 | ||
90 | * Add --verilog-data-width option to objcopy for verilog targets to control | |
91 | width of data elements in verilog hex format. | |
92 | ||
93 | * Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE) | |
94 | instructions. | |
95 | ||
96 | * The separate debug info file options of readelf (--debug-dump=links | |
97 | and --debug-dump=follow) and objdump (--dwarf=links and | |
98 | --dwarf=follow-links) will now display and/or follow multiple links if | |
99 | more than one are present in a file. (This usually happens when gcc's | |
100 | -gsplit-dwarf option is used). | |
101 | ||
102 | In addition objdump's --dwarf=follow-links now also affects its other | |
103 | display options, so that for example, when combined with --syms it will | |
104 | cause the symbol tables in any linked debug info files to also be | |
105 | displayed. In addition when combined with --disassemble the --dwarf= | |
106 | follow-links option will ensure that any symbol tables in the linked | |
107 | files are read and used when disassembling code in the main file. | |
108 | ||
109 | * Add support for dumping types encoded in the Compact Type Format | |
110 | to objdump and readelf. | |
111 | ||
112 | Changes in 2.32: | |
113 | ||
114 | * The addr2line, c++filt, nm and objdump tools now have a limit on the | |
115 | maximum amount of recursion that is allowed whilst demangling strings. | |
116 | The value for this limit is defined by the DEMANGLE_RECRUSE_LIMIT | |
117 | constant declared in the include/demangle.h header file. At the time | |
118 | of writing this constant has the value of 2048. | |
119 | ||
120 | The --no-recurse-limit option can be used to remove the limit, restoring | |
121 | the behaviour of earlier versions of these tools. This may be needed in | |
122 | order to dmangle truly complicated names, but it also leaves the tools | |
123 | vulnerable to stack exhaustion from maliciously constructed mangled names. | |
124 | ||
125 | * Objdump's --disassemble option can now take a parameter, specifying the | |
126 | starting symbol for disassembly. Disassembly will continue from this | |
127 | symbol up to the next symbol or the end of the function. | |
128 | ||
129 | * The MIPS port now supports the Loongson 2K1000 processor which implements | |
130 | the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE, Loongson-ext ASE, | |
131 | Loongson-ext2 ASE and MSA ASE instructions. Add -march=gs264e option for | |
132 | Loongson 2K1000 processor. | |
133 | ||
134 | * The MIPS port now supports the Loongson 3A2000/3A3000 processor which | |
135 | implements the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE, | |
136 | Loongson-ext ASE and Loongson-ext2 ASE instructions. Add -march=gs464e | |
137 | option for Loongson 3A2000/3A3000 processor. | |
138 | ||
139 | * The MIPS port now supports the Loongson 3A1000 processor, aka Loongson3a, | |
140 | which implements the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE | |
141 | and Loongson-ext ASE instructions. Add -march=gs464 option for Loongson | |
142 | 3A1000 processor, The -march=loongson3a is an alias of -march=gs464 for | |
143 | compatibility. | |
144 | ||
145 | * The size tool now has a new output format '--format=GNU' or '-G'. The | |
146 | results are displayed in a similar manor to the default berkeley layout, | |
147 | except read-only data is counted in the data column, not the text column. | |
148 | Additionally the total is only included once. | |
149 | ||
150 | Changes in 2.31: | |
151 | ||
152 | * Add support for disassembling netronome Flow Processor (NFP) firmware files. | |
153 | ||
154 | * The AArch64 port now supports showing disassembly notes which are emitted | |
155 | when inconsistencies are found with the instruction that may result in the | |
156 | instruction being invalid. These can be turned on with the option -M notes | |
157 | to objdump. | |
158 | ||
159 | * The AArch64 port now emits warnings when a combination of an instruction and | |
160 | a named register could be invalid. | |
161 | ||
162 | * Added O modifier to ar to display member offsets inside an archive | |
163 | ||
164 | Changes in 2.30: | |
165 | ||
166 | * Add --debug-dump=links option to readelf and --dwarf=links option to objdump | |
167 | which displays the contents of any .gnu_debuglink or .gnu_debugaltlink | |
168 | sections. | |
169 | ||
170 | Add a --debug-dump=follow-links option to readelf and a --dwarf=follow-links | |
171 | option to objdump which causes indirect links into separate debug info files | |
172 | to be followed when dumping other DWARF sections. | |
173 | ||
174 | Changes in 2.29: | |
175 | ||
176 | * The MIPS port now supports microMIPS eXtended Physical Addressing (XPA) | |
177 | instructions for assembly and disassembly. | |
178 | ||
179 | * The MIPS port now supports the microMIPS Release 5 ISA for assembly and | |
180 | disassembly. | |
181 | ||
182 | * The MIPS port now supports the Imagination interAptiv MR2 processor, | |
183 | which implements the MIPS32r3 ISA, the MIPS16e2 ASE as well as a couple | |
184 | of implementation-specific regular MIPS and MIPS16e2 ASE instructions. | |
185 | ||
186 | * The SPARC port now supports the SPARC M8 processor, which implements the | |
187 | Oracle SPARC Architecture 2017. | |
188 | ||
189 | * The MIPS port now supports the MIPS16e2 ASE for assembly and disassembly. | |
190 | ||
191 | * Add support for ELF SHF_GNU_MBIND and PT_GNU_MBIND_XXX. | |
192 | ||
193 | * Add support for the wasm32 ELF conversion of the WebAssembly file format. | |
194 | ||
195 | * Add --inlines option to objdump, which extends the --line-numbers option | |
196 | so that inlined functions will display their nesting information. | |
197 | ||
198 | * Add --merge-notes options to objcopy to reduce the size of notes in | |
199 | a binary file by merging and deleting redundant notes. | |
200 | ||
201 | * Add support for locating separate debug info files using the build-id | |
202 | method, where the separate file has a name based upon the build-id of | |
203 | the original file. | |
204 | ||
205 | Changes in 2.28: | |
206 | ||
207 | * This version of binutils fixes a problem with PowerPC VLE 16A and 16D | |
208 | relocations which were functionally swapped, for example, | |
209 | R_PPC_VLE_HA16A performed like R_PPC_VLE_HA16D while R_PPC_VLE_HA16D | |
210 | performed like R_PPC_VLE_HA16A. This could have been fixed by | |
211 | renumbering relocations, which would keep object files created by an | |
212 | older version of gas compatible with a newer ld. However, that would | |
213 | require an ABI update, affecting other assemblers and linkers that | |
214 | create and process the relocations correctly. It is recommended that | |
215 | all VLE object files be recompiled, but ld can modify the relocations | |
216 | if --vle-reloc-fixup is passed to ld. If the new ld command-line | |
217 | option is not used, ld will ld warn on finding relocations inconsistent | |
218 | with the instructions being relocated. | |
219 | ||
220 | * The nm program has a new command-line option (--with-version-strings) | |
221 | which will display a symbol's version information, if any, after the | |
222 | symbol's name. | |
223 | ||
224 | * The ARC port of objdump now accepts a -M option to specify the extra | |
225 | instruction class(es) that should be disassembled. | |
226 | ||
227 | * The --remove-section option for objcopy and strip now accepts section | |
228 | patterns starting with an exclamation point to indicate a non-matching | |
229 | section. A non-matching section is removed from the set of sections | |
230 | matched by an earlier --remove-section pattern. | |
231 | ||
232 | * The --only-section option for objcopy now accepts section patterns | |
233 | starting with an exclamation point to indicate a non-matching section. | |
234 | A non-matching section is removed from the set of sections matched by | |
235 | an earlier --only-section pattern. | |
236 | ||
237 | * New --remove-relocations=SECTIONPATTERN option for objcopy and strip. | |
238 | This option can be used to remove sections containing relocations. | |
239 | The SECTIONPATTERN is the section to which the relocations apply, not | |
240 | the relocation section itself. | |
241 | ||
242 | Changes in 2.27: | |
243 | ||
244 | * Add a configure option, --enable-64-bit-archive, to force use of a | |
245 | 64-bit format when creating an archive symbol index. | |
246 | ||
247 | * Add --elf-stt-common= option to objcopy for ELF targets to control | |
248 | whether to convert common symbols to the STT_COMMON type. | |
249 | ||
250 | Changes in 2.26: | |
251 | ||
252 | * Add option to objcopy to insert new symbols into a file: | |
253 | --add-symbol <name>=[<section>:]<value>[,<flags>] | |
254 | ||
255 | * Add support for the ARC EM/HS, and ARC600/700 architectures. | |
256 | ||
257 | * Extend objcopy --compress-debug-sections option to support | |
258 | --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF | |
259 | targets. | |
260 | ||
261 | * Add --update-section option to objcopy. | |
262 | ||
263 | * Add --output-separator option to strings. | |
264 | ||
265 | Changes in 2.25: | |
266 | ||
267 | * Add --data option to strings to only print strings in loadable, initialized | |
268 | data sections. Change the default behaviour to be --all, but add a new | |
269 | configure time option of --disable-default-strings-all to restore the old | |
270 | default behaviour. | |
271 | ||
272 | * Add --include-all-whitespace to strings. | |
273 | ||
274 | * Add --dump-section option to objcopy. | |
275 | ||
276 | * Add support for the Andes NDS32. | |
277 | ||
278 | Changes in 2.24: | |
279 | ||
280 | * Objcopy now supports wildcard characters in command-line options that take | |
281 | section names. | |
282 | ||
283 | * Add support for Altera Nios II. | |
284 | ||
285 | Changes in 2.23: | |
286 | ||
287 | * Add support for the VLE extension to the PowerPC architecture. | |
288 | ||
289 | * Add support for x64 Windows target of the delayed-load-library. | |
290 | ||
291 | * Add support for the Renesas RL78 architecture. | |
292 | ||
293 | Changes in 2.22: | |
294 | ||
295 | * Add support for displaying the contents of .debug.macro sections. | |
296 | ||
297 | * Add --preprocessor-arg option to windres to specify additional options | |
298 | passed to preprocessor. | |
299 | ||
300 | * Add --dwarf-start and --dwarf-end to readelf and objdump. These are used by | |
301 | the new Emacs mode, see dwarf-mode.el. | |
302 | ||
303 | * Add support for the Tilera TILEPro and TILE-Gx architectures. | |
304 | ||
305 | changes in 2.21: | |
306 | ||
307 | * Add --interleave-width option to objcopy to allowing copying a range of | |
308 | bytes from the input to the output with the --interleave option. | |
309 | ||
310 | * Add support for the TMS320C6000 (TI C6X) processor family. | |
311 | ||
312 | * Readelf can now display ARM unwind tables (.ARM.exidx / .ARM.extab) using | |
313 | the -u / --unwind option. | |
314 | ||
315 | * Add --dyn-syms to readelf to dump dynamic symbol table. | |
316 | ||
317 | * A new tool - elfedit - has been added to directly manipulate ELF format | |
318 | binaries. | |
319 | ||
320 | * Add to dlltool .def file feature of aliasing PE internal symbol name by | |
321 | '== <ID>' option. | |
322 | ||
323 | * Add a new command-line option -a / --addresses to addr2line to display the | |
324 | address before function name or source filename. | |
325 | ||
326 | * Add a new command-line option -p / --pretty-print to addr2line to have | |
327 | a more human readable output. | |
328 | ||
329 | * The hppa/som targets can now be compiled on any host. | |
330 | ||
331 | Changes in 2.20: | |
332 | ||
333 | * Add support for delay importing to dlltool. Use the --output-delaylib <file> | |
334 | switch to create a delay-import library. The resulting app will load the dll | |
335 | as soon as the first function is called. It will link to __delayLoadHelper2() | |
336 | from the static delayimp library, which will import LoadLibraryA and | |
337 | GetProcAddress from kernel32. | |
338 | ||
339 | * Add a new command-line option, --insn-width=WIDTH, to objdump to specify | |
340 | number of bytes to be displayed on a single line when disassembling | |
341 | instructions. | |
342 | ||
343 | * Readelf can now display the relocated contents of a section as a sequence | |
344 | of bytes via the --relocated-dump=<name|number> command-line option. | |
345 | ||
346 | * The gprof program has been given a new command-line option: | |
347 | --external-symbols-table=<filename> which reads in symbols from a specified | |
348 | file. | |
349 | ||
350 | * The plugin target has been added to bfd. It can load the same shared objects | |
351 | used by gold and uses them to provide basic support for new file formats. | |
352 | ||
353 | * The verilog memory hex dump file format is now supported as an output format | |
354 | for objcopy. | |
355 | ||
356 | * Add --file-alignment, --heap, --image-base, --section-alignment, | |
357 | --stack and --subsystem command-line options to objcopy, which will | |
358 | set PE optional header. | |
359 | ||
360 | * Option --dwarf/-W of objdump is now as flexible as readelf --debug-dump/-w. | |
361 | ||
362 | * --as-needed now links in a dynamic library if it satisfies undefined | |
363 | symbols in regular objects, or in other dynamic libraries. In the | |
364 | latter case the library is not linked if it is found in a DT_NEEDED | |
365 | entry of one of the libraries already linked. | |
366 | ||
367 | * Added --prefix=PREFIX and --prefix-strip=LEVEL switches to objdump to | |
368 | add absolute paths for -S. | |
369 | ||
370 | * Add new option --use-nul-prefixed-import-tables to dlltool to allow fall- | |
371 | back to old import table generation with null element prefix. | |
372 | ||
373 | * Added --identify-strict switch to cause --identify <implib> to | |
374 | report an error when the import library is associated with | |
375 | multiple DLLs. | |
376 | ||
377 | * Added --identify <implib> option to dlltool, which determines the | |
378 | name of the DLL associated with the specified <implib>. | |
379 | ||
380 | * Support for PowerPC booke64 instructions has been removed. The assembler no | |
381 | longer accepts -mbooke32 or -mbooke64 and the disassembler no longer accepts | |
382 | -Mbooke32 or -Mbooke64. Instead, -mbooke and -Mbooke should be used. | |
383 | ||
384 | Changes in 2.19: | |
385 | ||
386 | * Added -wL switch to dump decoded contents of .debug_line. | |
387 | ||
388 | * Added support for "thin" archives which contain pathnames pointing to | |
389 | object files rather than the files themselves and which contain a | |
390 | flattened symbol index for all objects, and archives, which have been | |
391 | added to the archive. | |
392 | ||
393 | * Added -F switch to objdump to include file offsets in the disassembly. | |
394 | ||
395 | * Added -c switch to readelf to allow string dumps of archive symbol index. | |
396 | ||
397 | * Support for SSE5 has been added to the i386 port. | |
398 | ||
399 | * Added -p switch to readelf to allow string dumps of sections. | |
400 | ||
401 | Changes in 2.18: | |
402 | ||
403 | * Resolved 37 coding problems in bfd including static array overruns, null | |
404 | pointer dereferences and use of a malloc buffer after it has been freed, as | |
405 | revealed by static analysis donated by Coverity, Inc. (http://scan.coverity.com). | |
406 | ||
407 | * The binutils sources are now released under version 3 of the GNU General | |
408 | Public License. | |
409 | ||
410 | * A new tool "windmc" has been added for some targets. This is a message | |
411 | compiler which attempts to be compatible with the MS version. | |
412 | ||
413 | * Add codepage support to the windres tool. It now supports many new | |
414 | resource types (e.g. MANIFEST, TOOLBAR, etc). The output generation | |
415 | for binary files is done now via bfd itself. The endianess problems | |
416 | for different hosts are solved. Dumps of .res files can now be | |
417 | re-compiled by windres without lossing resources or compilation errors. | |
418 | Some problems on dialog resource translations are corrected. | |
419 | ||
420 | * Add --extract-symbol command-line option to objcopy, which will | |
421 | strip everything out of an ordinary object file or executable except | |
422 | for its symbol table. Files containing just symbols can be useful | |
423 | to some OSes. | |
424 | ||
425 | Changes in 2.17: | |
426 | ||
427 | * Add "-x NAME" to readelf in addition to "-x NUMBER". | |
428 | ||
429 | * Add -i and -t switches to cxxfilt. -i disables the display of implementation | |
430 | specific extra demangling information (if any) and -t disables the demangling | |
431 | of types. | |
432 | ||
433 | * Add support for the "@<file>" syntax to the command lines of all tools, so | |
434 | that extra switches can be read from <file>. | |
435 | ||
436 | * Add "-W/--dwarf" to objdump to display the contents of the DWARF | |
437 | debug sections. | |
438 | ||
439 | * Add "-t/--section-details" to readelf to display section details. | |
440 | "-N/--full-section-name" is deprecated. | |
441 | ||
442 | * powerpc-linux ld now supports a variant form of PLT and GOT for the security | |
443 | conscious. This form will automatically be chosen when ld detects that all | |
444 | code in regular object files was generated by gcc -msecure-plt. The old PLT | |
445 | and GOT may be forced by a new ld option, --bss-plt. | |
446 | ||
447 | * Add "-i/--inlines" to addr2line to print enclosing scope information | |
448 | for inlined function chains, back to first non-inlined function. | |
449 | ||
450 | * Add "-N/--full-section-name" to readelf to display full section name. | |
451 | ||
452 | * Add "-M entry:<addr>" switch to objdump to specify a function entry address | |
453 | when disassembling VAX binaries. | |
454 | ||
455 | * Add "--globalize-symbol <name>" and "--globalize-symbols <filename>" switches | |
456 | to objcopy to convert local symbols into global symbols. | |
457 | ||
458 | * gprof now allows input files to have histogram records for | |
459 | several memory ranges, provided those ranges are disjoint. | |
460 | ||
461 | Changes in 2.16: | |
462 | ||
463 | * Add "-g/--section-groups" to readelf to display section groups. | |
464 | ||
465 | * objcopy recognizes two new options --strip-unneeded-symbol and | |
466 | --strip-unneeded-symbols, namely for use together with the wildcard | |
467 | matching the original --strip-symbol/--strip-symbols provided, but | |
468 | retaining any symbols matching but needed by relocations. | |
469 | ||
470 | * readelf can now display address ranges from .debug_range sections. This | |
471 | happens automatically when a DW_AT_range attribute is encountered. The | |
472 | command-line switch --debug-dump=Ranges (or -wR) can also be used to display | |
473 | the contents of the .debug_range section. | |
474 | ||
475 | * nm and objdump now have a switch "--special-syms" to enable the displaying of | |
476 | symbols which the target considers to be special. By default these symbols | |
477 | are no longer displayed. Currently the only special symbols are the Mapping | |
478 | symbols used by the ARM port to mark transitions between text and data and | |
479 | between ARM and THUMB code. | |
480 | ||
481 | * dlltool has a switch "--ext-prefix-alias <prefix>" to generate additional | |
482 | import and export symbols with <preifx> prepended to them. | |
483 | ||
484 | Changes in 2.15: | |
485 | ||
486 | * objcopy for MIPS targets now accepts "-M no-aliases" as an option to the | |
487 | disassembler to print the "raw" mips instruction mnemonic instead of some | |
488 | pseudo instruction name. I.E. print "daddu" or "or" instead of "move", | |
489 | "sll" instead of "nop", etc. | |
490 | ||
491 | * objcopy and strip can now take wildcard patterns in symbol names specified on | |
492 | the command line provided that the --wildcard switch is used to enable them. | |
493 | ||
494 | * readelf can now parse archives. | |
495 | ||
496 | * objdump now accepts --debugging-tags to print the debug information in a | |
497 | format compatible with ctags tool. | |
498 | ||
499 | * objcopy and strip now accept --only-keep-debug to create a file containing | |
500 | those sections that would be stripped out by --strip-debug. The idea is that | |
501 | this can be used in conjunction with the --add-gnu-debuglink switch to create | |
502 | a two part program distribution - one a stripped executable and the other the | |
503 | debugging info. | |
504 | ||
505 | * objcopy now accepts --add-gnu-debuglink=<file> to insert a .gnu_debuglink | |
506 | section into a (presumably stripped) executable. This allows the debug | |
507 | information for the file to be held in a separate file. | |
508 | ||
509 | * BFD marks the sections .comment and .note as 'n' in the BSD/POSIX | |
510 | single-character representation. This can be checked by running nm | |
511 | with the -a switch. | |
512 | ||
513 | Changes in 2.14: | |
514 | ||
515 | * Added --info switch to objcopy and strip. | |
516 | ||
517 | * Support for Vitesse IQ2000 added by Red Hat. | |
518 | ||
519 | * Added 'S' encoding to strings to allow the display of 8-bit characters. | |
520 | ||
521 | * Added --prefix-symbols=<text>, --prefix-sections=<text> and | |
522 | --prefix-alloc-sections=<text> to objcopy. | |
523 | ||
524 | * readelf can handle the extensions to the DWARF2 spec used by the Unified | |
525 | Parallel C compiler. | |
526 | ||
527 | * BFD no longer declares a "boolean" type, to avoid clashes with other | |
528 | headers that declare the same. Users of BFD should replace boolean, | |
529 | false and true, with int, 0 and 1, or define their own boolean type. | |
530 | ||
531 | * Support for IP2K added by Denis Chertykov. | |
532 | ||
533 | Changes in 2.13: | |
534 | ||
535 | * Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400 | |
536 | and FR500 included. | |
537 | ||
538 | Changes in version 2.12: | |
539 | ||
540 | * Support for Don Knuth's MMIX, by Hans-Peter Nilsson. | |
541 | ||
542 | * size: Add --totals to display summary of sizes (Berkeley format only). | |
543 | ||
544 | * readelf: Add --wide option to not break section header or segment listing | |
545 | lines to fit into 80 columns. | |
546 | ||
547 | * strings: Add --encoding to display wide character strings. By Markus Kuhn. | |
548 | ||
549 | * objcopy: Add --rename-section to change section names. | |
550 | ||
551 | * readelf: Support added for DWARF 2.1 extensions. Support added for | |
552 | displaying the contents of .debug.macinfo sections. | |
553 | ||
554 | * New command-line switches added to objcopy to allow symbols to be kept as | |
555 | global symbols, and also to specify files containing lists of such symbols. | |
556 | by Honda Hiroki. | |
557 | ||
558 | * Support for OpenRISC by Johan Rydberg. | |
559 | ||
560 | * New command-line switch to objcopy --alt-machine-code which creates a binary | |
561 | with an alternate machine code if one is defined in the architecture | |
562 | description. Only supported for ELF targets. By Alexandre Oliva. | |
563 | ||
564 | * New command-line switch to objcopy -B (or --binary-architecture) which sets | |
565 | the architecture of the output file to the given argument. This option only | |
566 | makes sense, if the input target is binary. Otherwise it is ignored. | |
567 | By Stefan Geuken. | |
568 | ||
569 | * Support for PDP-11 by Lars Brinkhoff. | |
570 | ||
571 | Changes in binutils 2.11: | |
572 | ||
573 | * Add support for ARM v5t and v5te architectures and Intel's XScale ARM | |
574 | extenstions. | |
575 | ||
576 | * Add --srec-len and --srec-forceS3 command-line switch to objcopy. | |
577 | By Luciano Gemme. | |
578 | ||
579 | * Support for the MIPS32, by Anders Norlander. | |
580 | ||
581 | * Support for the i860, by Jason Eckhardt. | |
582 | ||
583 | * Support for CRIS (Axis Communications ETRAX series). | |
584 | ||
585 | Changes in binutils 2.10: | |
586 | ||
587 | * Support for 64-bit ELF on HPPA. | |
588 | ||
589 | * New command-line switch to objdump --file-start-context which shows the | |
590 | entire file contents up to the source line first encountered for a given | |
591 | file. | |
592 | ||
593 | * New command-line switch to objdump -M (or --disassembler-options) which takes | |
594 | a parameter which can then be interpreted on a per-target basis by the | |
595 | disassembler. Used by ARM targets to select register name sets, ISA, APCS or | |
596 | raw verions. | |
597 | ||
598 | * objdump support for -mi386:intel which causes disassembly to be displayed | |
599 | with intel syntax. | |
600 | ||
601 | * New program: readelf. This displays the contents of ELF format files, | |
602 | regardless of target machine. | |
603 | ||
604 | * objcopy now takes --change-section-lma, --change-section-vma, and | |
605 | --change-section-address options. The old --adjust-section-vma option is | |
606 | equivalent to --change-section-address. The other --adjust-* options are now | |
607 | renamed to --change-*, although --adjust-* continues to work. | |
608 | ||
609 | * objcopy has a --redefine-sym option that lets you rename symbols. | |
610 | ||
611 | * objcopy now takes a -j/--only-section option to copy only the specified | |
612 | sections. | |
613 | ||
614 | * dlltool now supports the IMPORTS command. | |
615 | ||
616 | * dlltool now takes --export-all-symbols, --no-export-all-symbols, | |
617 | --exclude-symbols, and --no-default-excludes options. | |
618 | ||
619 | Changes in binutils 2.9: | |
620 | ||
621 | * Added windres program, which can be used to manipulate resources in WIN32 | |
622 | files as used on Windows 95 and Windows NT. | |
623 | ||
624 | * The objcopy --gap-fill and --pad-to options operate on the LMA rather than | |
625 | the VMA of the sections. | |
626 | ||
627 | * Added S modifier to ar to not build a symbol table. | |
628 | ||
629 | Changes in binutils 2.8: | |
630 | ||
631 | * The objdump disassembly format has been changed, and hopefully improved. Use | |
632 | the new --prefix-addresses option to get the old format. There are also new | |
633 | --disassemble-zeroes and --no-show-raw-insn options which affect disassembler | |
634 | output. | |
635 | ||
636 | * Formats may now be specified as configuration triplets. For example, | |
637 | objdump -b i386-pc-linux. The triplets are not passed through config.sub, | |
638 | so they must be in canonical form. | |
639 | ||
640 | * Added new addr2line program. This uses the debugging information to convert | |
641 | an address into a file name and line number within a program. | |
642 | ||
643 | * Added --change-leading-char argument to objcopy. | |
644 | ||
645 | * Added --weaken argument to objcopy. | |
646 | ||
647 | * objdump --dynamic-reloc now works on ELF executables and shared libraries. | |
648 | ||
649 | * Added --adjust-vma option to objdump. | |
650 | ||
651 | * Added -C/--demangle option to objdump. | |
652 | ||
653 | * Added -p/--preserve-dates option to strip and objcopy. | |
654 | ||
655 | Changes in binutils 2.7: | |
656 | ||
657 | * Added --enable-shared and --enable-commonbfdlib options to configure. | |
658 | ||
659 | * Added --debugging argument to objdump and objcopy. | |
660 | ||
661 | * Added --defined-only argument to nm. | |
662 | ||
663 | * Added --remove-leading-char argument to objcopy. | |
664 | ||
665 | * The objdump --line-numbers option is now meaningful with --reloc. | |
666 | ||
667 | * Added --line-numbers option to nm. | |
668 | ||
669 | * Added --endian/-EB/-EL option to objdump. | |
670 | ||
671 | * Added support for Alpha OpenVMS/AXP. | |
672 | ||
673 | Changes in binutils 2.6: | |
674 | ||
675 | * Added -N/--strip-symbol and -K/--keep-symbol arguments to strip and objcopy. | |
676 | ||
677 | * Added several arguments to objcopy to provide some control over how the new | |
678 | file is laid out in memory. Also added binary output format to BFD to permit | |
679 | generating plain binary files. | |
680 | ||
681 | * Added --start-address and --stop-address options to objdump. | |
682 | ||
683 | * ar and ranlib now work on AIX. The tools are now built by default on AIX. | |
684 | ||
685 | Changes in binutils 2.5: | |
686 | ||
687 | * Changed objdump -dr to dump the relocs interspersed with the assembly | |
688 | listing, for a more useful listing of relocatable files. | |
689 | ||
690 | * Changed objdump -d/--disassemble to only disassemble SEC_CODE sections. | |
691 | Added -D/--disassemble-all option to disassemble all sections. | |
692 | ||
693 | * Added --size-sort option to nm. | |
694 | ||
695 | * strip and objcopy should now be able to handle dynamically linked ELF | |
696 | executables. | |
697 | ||
698 | Changes in binutils 2.4: | |
699 | ||
700 | * Support for HP-PA (by Jeff Law), i386 Mach (by David Mackenzie), RS/6000 and | |
701 | PowerPC (except ar and ranlib; by Ian Taylor). | |
702 | ||
703 | * Support for Irix 5. | |
704 | ||
705 | * Programs `strip' and `objcopy' will not attempt to write dynamically linked | |
706 | ELF output files, since BFD currently can't create them properly. | |
707 | ||
708 | Changes in binutils 2.3: | |
709 | ||
710 | * A new --stabs argument has been added to objdump to dump stabs sections in | |
711 | ELF and COFF files. | |
712 | ||
713 | * A new program, nlmconv, has been added. It can convert object files into | |
714 | Novell NetWare Loadable Modules. | |
715 | ||
716 | * The strings program has been added. | |
717 | ||
718 | Changes in binutils 2.2: | |
719 | ||
720 | * The 'copy' program has been renamed to 'objcopy', for consistency with | |
721 | 'objdump', and because 'copy' might more plausibly be used as a synonym for | |
722 | 'cp'. | |
723 | ||
724 | * The new stand-alone program c++filt is a filter that converts encoded | |
725 | (mangled) C++ assembly-level identifiers to user-level names. (Note: This | |
726 | may get moved to the gcc distribution.) | |
727 | ||
728 | * nm -o on an archive now prefixes each line with the archive name, matching | |
729 | the output from BSD nm. | |
730 | ||
731 | * ar (and ld) can now read (but not write) BSD4.4-style archives. | |
732 | ||
733 | * New support for H8500, Z8000, and the Hitach SH. | |
734 | ||
735 | * Dis-assembler interface changed to allow sharing with gdb. | |
736 | ||
737 | * There is new Elf code, but it is not yet ready for general use. | |
738 | ||
739 | * There is the beginnings of a test suite. | |
740 | ||
741 | Changes in binutils 2.1: | |
742 | ||
743 | * There is now support for writing ECOFF files, so ld and the other utilities | |
744 | should work on Risc/Ultrix and Irix. Please let us know how well this works. | |
745 | ||
746 | * ar now automatically creates a symbol table (a __.SYMDEF member, in the BSD | |
747 | version), if there are any object files in the archive. So running ranlib is | |
748 | now redundant (unless the non-standard q command is used). This is required | |
749 | for Posix.2 conformance. | |
750 | ||
751 | * The archive-reading code now reads both BSD-style and SYSV-style archives | |
752 | independently of the selected target format. This is to encourage people to | |
753 | switch to SYSV-format, which has a number of advantages. | |
754 | ||
755 | * The strip and copy programs now have options to remove debug-symbols only | |
756 | and/or local symbols only. They now also support long options. | |
757 | ||
758 | \f | |
759 | Copyright (C) 2012-2021 Free Software Foundation, Inc. | |
760 | ||
761 | Copying and distribution of this file, with or without modification, | |
762 | are permitted in any medium without royalty provided the copyright | |
763 | notice and this notice are preserved. | |
764 | ||
765 | Local variables: | |
766 | fill-column: 79 | |
767 | End: |