1-*- text -*- 2 3Changes in 2.39: 4 5* Add --no-weak/-W option to nm to make it ignore weak symbols. 6 7* Add an option to objdump and readelf to prevent attempts to access debuginfod 8 servers when following links. 9 10* objcopy --weaken, --weaken-symbol, and --weaken-symbols now make ELF 11 STB_GNU_UNIQUE symbols weak. 12 13* objdump now supports syntax highlighting of disassembler output for some 14 architectures. Use the --disassembler-color=MODE command line flag, with 15 mode being either off, color, or extended-color. 16 17Changes in 2.38: 18 19* elfedit: Add --output-abiversion option to update ABIVERSION. 20 21* Add support for the LoongArch instruction set. 22 23* Tools which display symbols or strings (readelf, strings, nm, objdump) 24 have a new command line option which controls how unicode characters are 25 handled. By default they are treated as normal for the tool. Using 26 --unicode=locale will display them according to the current locale. 27 Using --unicode=hex will display them as hex byte values, whilst 28 --unicode=escape will display them as escape sequences. In addition 29 using --unicode=highlight will display them as unicode escape sequences 30 highlighted in red (if supported by the output device). 31 32* readelf -r dumps RELR relative relocations now. 33 34* Support for efi-app-aarch64, efi-rtdrv-aarch64 and efi-bsdrv-aarch64 has been 35 added to objcopy in order to enable UEFI development using binutils. 36 37* ar: Add --thin for creating thin archives. -T is a deprecated alias without 38 diagnostics. In many ar implementations -T has a different meaning, as 39 specified by X/Open System Interface. 40 41Changes in 2.37: 42 43* The readelf tool has a new command line option which can be used to specify 44 how the numeric values of symbols are reported. --sym-base=0|8|10|16 tells 45 readelf to display the values in base 8, base 10 or base 16. A sym base of 0 46 represents the default action of displaying values under 10000 in base 10 and 47 values above that in base 16. 48 49* Binutils now requires a C99 compiler and library to build. 50 51* A new format has been added to the nm program. Specifying 52 --format=just-symbols (or just using -j) will tell the program to only 53 display symbol names and nothing else. 54 55* A new command line --keep-section-symbols has been added to objcopy and 56 strip. This stops the removal of unused section symbols when the file is 57 copied. Removing these symbols saves space, but sometimes they are needed by 58 other tools. 59 60* objcopy --weaken, --weaken-symbol and --weaken-symbols now make undefined 61 symbols weak on targets that support weak symbols. 62 63* Readelf and objdump can now display and use the contents of .debug_sup 64 sections. 65 66* Readelf and objdump will now follow links to separate debug info files by 67 default. This behaviour can be stopped via the use of the new -wN or 68 --debug-dump=no-follow-links options for readelf and the -WN or 69 --dwarf=no-follow-links options for objdump. Also the old behaviour can be 70 restored by the use of the --enable-follow-debug-links=no configure time 71 option. 72 73 The semantics of the =follow-links option have also been slightly changed. 74 When enabled, the option allows for the loading of symbol tables and string 75 tables from the separate files which can be used to enhance the information 76 displayed when dumping other sections, but it does not automatically imply 77 that information from the separate files should be displayed. 78 79 If other debug section display options are also enabled (eg 80 --debug-dump=info) then the contents of matching sections in both the main 81 file and the separate debuginfo file *will* be displayed. This is because in 82 most cases the debug section will only be present in one of the files. 83 84 If however non-debug section display options are enabled (eg --sections) then 85 the contents of matching parts of the separate debuginfo file will *not* be 86 displayed. This is because in most cases the user probably only wanted to 87 load the symbol information from the separate debuginfo file. In order to 88 change this behaviour a new command line option --process-links can be used. 89 This will allow di0pslay options to applied to both the main file and any 90 separate debuginfo files. 91 92* Nm has a new command line option: --quiet. This suppresses "no symbols" 93 diagnostic. 94 95Changes in 2.36: 96 97* Update elfedit and readelf with LAM_U48 and LAM_U57 support. 98 99* Nm has a new command line option: --ifunc-chars=CHARS. This specifies a 100 string of one or two characters. The first character is used as the type 101 character when displaying global ifunc symbols. The second character, if 102 present is used when displaying local ifunc symbols. 103 104 In addition a new configure time option --enable-f-for-ifunc-symbols has been 105 created, which if used will change nm's default characters for ifunc symbols 106 from i (both local and global) to F (global) and f (local). 107 108* The ar tool's previously unused l modifier is now used for specifying 109 dependencies of a static library. The arguments of this option 110 (or --record-libdeps long form option) will be stored verbatim in the 111 __.LIBDEP member of the archive, which the linker may read at link time. 112 113* Readelf can now display the contents of LTO symbol table sections when asked 114 to do so via the --lto-syms command line option. 115 116* Readelf now accepts the -C command line option to enable the demangling of 117 symbol names. In addition the --demangle=<style>, --no-demangle, 118 --recurse-limit and --no-recurse-limit options are also now availale. 119 120* Add support for the SHF_GNU_RETAIN ELF section flag. 121 This flag specifies that the section should not be garbage collected by the 122 linker. 123 124Changes in 2.35: 125 126* Changed readelf's display of symbol names when wide mode is not enabled. 127 If the name is too long it will be truncated and the last five characters 128 replaced with "[...]". The old behaviour of displaying 5 more characters but 129 not indicating that truncation has happened can be restored by the use of the 130 -T or --silent-truncation options. 131 132* X86 NaCl target support is removed. 133 134* The readelf tool now has a -L or --lint or --enable-checks option which turns 135 on warning messages about possible problems with the file(s) being examined. 136 These checks include things like zero-sized sections, which are allowed by 137 the ELF standard but which nevertheless might be of concern if the user 138 was expecting them to actually contain something. 139 140Changes in 2.34: 141 142* Binutils now supports debuginfod, an HTTP server for distributing 143 ELF/DWARF debugging information as well as source code. When built with 144 debuginfod, readelf and objdump can automatically query debuginfod 145 servers for separate debug files when they otherwise cannot be found. 146 To build binutils with debuginfod, pass --with-debuginfod to configure. 147 This requires libdebuginfod, the debuginfod client library. debuginfod 148 is distributed with elfutils, starting with version 0.178. For more 149 information see https://sourceware.org/elfutils. 150 151* Add --output option to the "ar" program. This option can be used to specify 152 the output directory when extracting members from an archive. 153 154* Add --keep-section option to objcopy and strip. This option keeps the 155 specified section from being removed. 156 157 * Add visualization of jumps inside a function by drawing an ascii character 158 graph between the address and the disassembler column. Enabled via the 159 --visualize-jumps command line option for objdump. Currently supported by 160 the x86, x86_64, and ARM targets. The output looks something like this: 161 162 c6: | | \----------> be 00 00 00 00 mov $0x0,%esi 163 cb: | | /----> 48 8b 3d 00 00 00 00 mov 0x0(%rip),%rdi # d2 <main+0xd2> 164 d2: | | | 31 c0 xor %eax,%eax 165 d4: | | | /-- e8 00 00 00 00 callq d9 <main+0xd9> 166 d9: | | | \-> bf 02 00 00 00 mov $0x2,%edi 167 de: | +-----------|----- e8 00 00 00 00 callq e3 <main+0xe3> 168 e3: | \-----------|----> 48 89 da mov %rbx,%rdx 169 e6: | | be 00 00 00 00 mov $0x0,%esi 170 eb: | \----- eb de jmp cb <main+0xcb> 171 ed: \-------------------> 48 8b 16 mov (%rsi),%rdx 172 173 Additional arguments to the --visualize-jumps option add colors to the 174 output. 175 176Changes in 2.33: 177 178* Add --source-comment[=<txt>] option to objdump which if present, 179 provides a prefix to source code lines displayed in a disassembly. 180 181* Add --set-section-alignment <section-name>=<align> option to objcopy to allow 182 the changing of section alignments. 183 184* Add --verilog-data-width option to objcopy for verilog targets to control 185 width of data elements in verilog hex format. 186 187* Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE) 188 instructions. 189 190* The separate debug info file options of readelf (--debug-dump=links 191 and --debug-dump=follow) and objdump (--dwarf=links and 192 --dwarf=follow-links) will now display and/or follow multiple links if 193 more than one are present in a file. (This usually happens when gcc's 194 -gsplit-dwarf option is used). 195 196 In addition objdump's --dwarf=follow-links now also affects its other 197 display options, so that for example, when combined with --syms it will 198 cause the symbol tables in any linked debug info files to also be 199 displayed. In addition when combined with --disassemble the --dwarf= 200 follow-links option will ensure that any symbol tables in the linked 201 files are read and used when disassembling code in the main file. 202 203 * Add support for dumping types encoded in the Compact Type Format 204 to objdump and readelf. 205 206Changes in 2.32: 207 208* The addr2line, c++filt, nm and objdump tools now have a limit on the 209 maximum amount of recursion that is allowed whilst demangling strings. 210 The value for this limit is defined by the DEMANGLE_RECRUSE_LIMIT 211 constant declared in the include/demangle.h header file. At the time 212 of writing this constant has the value of 2048. 213 214 The --no-recurse-limit option can be used to remove the limit, restoring 215 the behaviour of earlier versions of these tools. This may be needed in 216 order to dmangle truly complicated names, but it also leaves the tools 217 vulnerable to stack exhaustion from maliciously constructed mangled names. 218 219* Objdump's --disassemble option can now take a parameter, specifying the 220 starting symbol for disassembly. Disassembly will continue from this 221 symbol up to the next symbol or the end of the function. 222 223* The MIPS port now supports the Loongson 2K1000 processor which implements 224 the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE, Loongson-ext ASE, 225 Loongson-ext2 ASE and MSA ASE instructions. Add -march=gs264e option for 226 Loongson 2K1000 processor. 227 228* The MIPS port now supports the Loongson 3A2000/3A3000 processor which 229 implements the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE, 230 Loongson-ext ASE and Loongson-ext2 ASE instructions. Add -march=gs464e 231 option for Loongson 3A2000/3A3000 processor. 232 233* The MIPS port now supports the Loongson 3A1000 processor, aka Loongson3a, 234 which implements the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE 235 and Loongson-ext ASE instructions. Add -march=gs464 option for Loongson 236 3A1000 processor, The -march=loongson3a is an alias of -march=gs464 for 237 compatibility. 238 239* The size tool now has a new output format '--format=GNU' or '-G'. The 240 results are displayed in a similar manor to the default berkeley layout, 241 except read-only data is counted in the data column, not the text column. 242 Additionally the total is only included once. 243 244Changes in 2.31: 245 246* Add support for disassembling netronome Flow Processor (NFP) firmware files. 247 248* The AArch64 port now supports showing disassembly notes which are emitted 249 when inconsistencies are found with the instruction that may result in the 250 instruction being invalid. These can be turned on with the option -M notes 251 to objdump. 252 253* The AArch64 port now emits warnings when a combination of an instruction and 254 a named register could be invalid. 255 256* Added O modifier to ar to display member offsets inside an archive 257 258Changes in 2.30: 259 260* Add --debug-dump=links option to readelf and --dwarf=links option to objdump 261 which displays the contents of any .gnu_debuglink or .gnu_debugaltlink 262 sections. 263 264 Add a --debug-dump=follow-links option to readelf and a --dwarf=follow-links 265 option to objdump which causes indirect links into separate debug info files 266 to be followed when dumping other DWARF sections. 267 268Changes in 2.29: 269 270* The MIPS port now supports microMIPS eXtended Physical Addressing (XPA) 271 instructions for assembly and disassembly. 272 273* The MIPS port now supports the microMIPS Release 5 ISA for assembly and 274 disassembly. 275 276* The MIPS port now supports the Imagination interAptiv MR2 processor, 277 which implements the MIPS32r3 ISA, the MIPS16e2 ASE as well as a couple 278 of implementation-specific regular MIPS and MIPS16e2 ASE instructions. 279 280* The SPARC port now supports the SPARC M8 processor, which implements the 281 Oracle SPARC Architecture 2017. 282 283* The MIPS port now supports the MIPS16e2 ASE for assembly and disassembly. 284 285* Add support for ELF SHF_GNU_MBIND and PT_GNU_MBIND_XXX. 286 287* Add support for the wasm32 ELF conversion of the WebAssembly file format. 288 289* Add --inlines option to objdump, which extends the --line-numbers option 290 so that inlined functions will display their nesting information. 291 292* Add --merge-notes options to objcopy to reduce the size of notes in 293 a binary file by merging and deleting redundant notes. 294 295* Add support for locating separate debug info files using the build-id 296 method, where the separate file has a name based upon the build-id of 297 the original file. 298 299Changes in 2.28: 300 301* This version of binutils fixes a problem with PowerPC VLE 16A and 16D 302 relocations which were functionally swapped, for example, 303 R_PPC_VLE_HA16A performed like R_PPC_VLE_HA16D while R_PPC_VLE_HA16D 304 performed like R_PPC_VLE_HA16A. This could have been fixed by 305 renumbering relocations, which would keep object files created by an 306 older version of gas compatible with a newer ld. However, that would 307 require an ABI update, affecting other assemblers and linkers that 308 create and process the relocations correctly. It is recommended that 309 all VLE object files be recompiled, but ld can modify the relocations 310 if --vle-reloc-fixup is passed to ld. If the new ld command-line 311 option is not used, ld will ld warn on finding relocations inconsistent 312 with the instructions being relocated. 313 314* The nm program has a new command-line option (--with-version-strings) 315 which will display a symbol's version information, if any, after the 316 symbol's name. 317 318* The ARC port of objdump now accepts a -M option to specify the extra 319 instruction class(es) that should be disassembled. 320 321* The --remove-section option for objcopy and strip now accepts section 322 patterns starting with an exclamation point to indicate a non-matching 323 section. A non-matching section is removed from the set of sections 324 matched by an earlier --remove-section pattern. 325 326* The --only-section option for objcopy now accepts section patterns 327 starting with an exclamation point to indicate a non-matching section. 328 A non-matching section is removed from the set of sections matched by 329 an earlier --only-section pattern. 330 331* New --remove-relocations=SECTIONPATTERN option for objcopy and strip. 332 This option can be used to remove sections containing relocations. 333 The SECTIONPATTERN is the section to which the relocations apply, not 334 the relocation section itself. 335 336Changes in 2.27: 337 338* Add a configure option, --enable-64-bit-archive, to force use of a 339 64-bit format when creating an archive symbol index. 340 341* Add --elf-stt-common= option to objcopy for ELF targets to control 342 whether to convert common symbols to the STT_COMMON type. 343 344Changes in 2.26: 345 346* Add option to objcopy to insert new symbols into a file: 347 --add-symbol <name>=[<section>:]<value>[,<flags>] 348 349* Add support for the ARC EM/HS, and ARC600/700 architectures. 350 351* Extend objcopy --compress-debug-sections option to support 352 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF 353 targets. 354 355* Add --update-section option to objcopy. 356 357* Add --output-separator option to strings. 358 359Changes in 2.25: 360 361* Add --data option to strings to only print strings in loadable, initialized 362 data sections. Change the default behaviour to be --all, but add a new 363 configure time option of --disable-default-strings-all to restore the old 364 default behaviour. 365 366* Add --include-all-whitespace to strings. 367 368* Add --dump-section option to objcopy. 369 370* Add support for the Andes NDS32. 371 372Changes in 2.24: 373 374* Objcopy now supports wildcard characters in command-line options that take 375 section names. 376 377* Add support for Altera Nios II. 378 379Changes in 2.23: 380 381* Add support for the VLE extension to the PowerPC architecture. 382 383* Add support for x64 Windows target of the delayed-load-library. 384 385* Add support for the Renesas RL78 architecture. 386 387Changes in 2.22: 388 389* Add support for displaying the contents of .debug.macro sections. 390 391* Add --preprocessor-arg option to windres to specify additional options 392 passed to preprocessor. 393 394* Add --dwarf-start and --dwarf-end to readelf and objdump. These are used by 395 the new Emacs mode, see dwarf-mode.el. 396 397* Add support for the Tilera TILEPro and TILE-Gx architectures. 398 399changes in 2.21: 400 401* Add --interleave-width option to objcopy to allowing copying a range of 402 bytes from the input to the output with the --interleave option. 403 404* Add support for the TMS320C6000 (TI C6X) processor family. 405 406* Readelf can now display ARM unwind tables (.ARM.exidx / .ARM.extab) using 407 the -u / --unwind option. 408 409* Add --dyn-syms to readelf to dump dynamic symbol table. 410 411* A new tool - elfedit - has been added to directly manipulate ELF format 412 binaries. 413 414* Add to dlltool .def file feature of aliasing PE internal symbol name by 415 '== <ID>' option. 416 417* Add a new command-line option -a / --addresses to addr2line to display the 418 address before function name or source filename. 419 420* Add a new command-line option -p / --pretty-print to addr2line to have 421 a more human readable output. 422 423* The hppa/som targets can now be compiled on any host. 424 425Changes in 2.20: 426 427* Add support for delay importing to dlltool. Use the --output-delaylib <file> 428 switch to create a delay-import library. The resulting app will load the dll 429 as soon as the first function is called. It will link to __delayLoadHelper2() 430 from the static delayimp library, which will import LoadLibraryA and 431 GetProcAddress from kernel32. 432 433* Add a new command-line option, --insn-width=WIDTH, to objdump to specify 434 number of bytes to be displayed on a single line when disassembling 435 instructions. 436 437* Readelf can now display the relocated contents of a section as a sequence 438 of bytes via the --relocated-dump=<name|number> command-line option. 439 440* The gprof program has been given a new command-line option: 441 --external-symbols-table=<filename> which reads in symbols from a specified 442 file. 443 444* The plugin target has been added to bfd. It can load the same shared objects 445 used by gold and uses them to provide basic support for new file formats. 446 447* The verilog memory hex dump file format is now supported as an output format 448 for objcopy. 449 450* Add --file-alignment, --heap, --image-base, --section-alignment, 451 --stack and --subsystem command-line options to objcopy, which will 452 set PE optional header. 453 454* Option --dwarf/-W of objdump is now as flexible as readelf --debug-dump/-w. 455 456* --as-needed now links in a dynamic library if it satisfies undefined 457 symbols in regular objects, or in other dynamic libraries. In the 458 latter case the library is not linked if it is found in a DT_NEEDED 459 entry of one of the libraries already linked. 460 461* Added --prefix=PREFIX and --prefix-strip=LEVEL switches to objdump to 462 add absolute paths for -S. 463 464* Add new option --use-nul-prefixed-import-tables to dlltool to allow fall- 465 back to old import table generation with null element prefix. 466 467* Added --identify-strict switch to cause --identify <implib> to 468 report an error when the import library is associated with 469 multiple DLLs. 470 471* Added --identify <implib> option to dlltool, which determines the 472 name of the DLL associated with the specified <implib>. 473 474* Support for PowerPC booke64 instructions has been removed. The assembler no 475 longer accepts -mbooke32 or -mbooke64 and the disassembler no longer accepts 476 -Mbooke32 or -Mbooke64. Instead, -mbooke and -Mbooke should be used. 477 478Changes in 2.19: 479 480* Added -wL switch to dump decoded contents of .debug_line. 481 482* Added support for "thin" archives which contain pathnames pointing to 483 object files rather than the files themselves and which contain a 484 flattened symbol index for all objects, and archives, which have been 485 added to the archive. 486 487* Added -F switch to objdump to include file offsets in the disassembly. 488 489* Added -c switch to readelf to allow string dumps of archive symbol index. 490 491* Support for SSE5 has been added to the i386 port. 492 493* Added -p switch to readelf to allow string dumps of sections. 494 495Changes in 2.18: 496 497* Resolved 37 coding problems in bfd including static array overruns, null 498 pointer dereferences and use of a malloc buffer after it has been freed, as 499 revealed by static analysis donated by Coverity, Inc. (http://scan.coverity.com). 500 501* The binutils sources are now released under version 3 of the GNU General 502 Public License. 503 504* A new tool "windmc" has been added for some targets. This is a message 505 compiler which attempts to be compatible with the MS version. 506 507* Add codepage support to the windres tool. It now supports many new 508 resource types (e.g. MANIFEST, TOOLBAR, etc). The output generation 509 for binary files is done now via bfd itself. The endianess problems 510 for different hosts are solved. Dumps of .res files can now be 511 re-compiled by windres without lossing resources or compilation errors. 512 Some problems on dialog resource translations are corrected. 513 514* Add --extract-symbol command-line option to objcopy, which will 515 strip everything out of an ordinary object file or executable except 516 for its symbol table. Files containing just symbols can be useful 517 to some OSes. 518 519Changes in 2.17: 520 521* Add "-x NAME" to readelf in addition to "-x NUMBER". 522 523* Add -i and -t switches to cxxfilt. -i disables the display of implementation 524 specific extra demangling information (if any) and -t disables the demangling 525 of types. 526 527* Add support for the "@<file>" syntax to the command lines of all tools, so 528 that extra switches can be read from <file>. 529 530* Add "-W/--dwarf" to objdump to display the contents of the DWARF 531 debug sections. 532 533* Add "-t/--section-details" to readelf to display section details. 534 "-N/--full-section-name" is deprecated. 535 536* powerpc-linux ld now supports a variant form of PLT and GOT for the security 537 conscious. This form will automatically be chosen when ld detects that all 538 code in regular object files was generated by gcc -msecure-plt. The old PLT 539 and GOT may be forced by a new ld option, --bss-plt. 540 541* Add "-i/--inlines" to addr2line to print enclosing scope information 542 for inlined function chains, back to first non-inlined function. 543 544* Add "-N/--full-section-name" to readelf to display full section name. 545 546* Add "-M entry:<addr>" switch to objdump to specify a function entry address 547 when disassembling VAX binaries. 548 549* Add "--globalize-symbol <name>" and "--globalize-symbols <filename>" switches 550 to objcopy to convert local symbols into global symbols. 551 552* gprof now allows input files to have histogram records for 553 several memory ranges, provided those ranges are disjoint. 554 555Changes in 2.16: 556 557* Add "-g/--section-groups" to readelf to display section groups. 558 559* objcopy recognizes two new options --strip-unneeded-symbol and 560 --strip-unneeded-symbols, namely for use together with the wildcard 561 matching the original --strip-symbol/--strip-symbols provided, but 562 retaining any symbols matching but needed by relocations. 563 564* readelf can now display address ranges from .debug_range sections. This 565 happens automatically when a DW_AT_range attribute is encountered. The 566 command-line switch --debug-dump=Ranges (or -wR) can also be used to display 567 the contents of the .debug_range section. 568 569* nm and objdump now have a switch "--special-syms" to enable the displaying of 570 symbols which the target considers to be special. By default these symbols 571 are no longer displayed. Currently the only special symbols are the Mapping 572 symbols used by the ARM port to mark transitions between text and data and 573 between ARM and THUMB code. 574 575* dlltool has a switch "--ext-prefix-alias <prefix>" to generate additional 576 import and export symbols with <preifx> prepended to them. 577 578Changes in 2.15: 579 580* objcopy for MIPS targets now accepts "-M no-aliases" as an option to the 581 disassembler to print the "raw" mips instruction mnemonic instead of some 582 pseudo instruction name. I.E. print "daddu" or "or" instead of "move", 583 "sll" instead of "nop", etc. 584 585* objcopy and strip can now take wildcard patterns in symbol names specified on 586 the command line provided that the --wildcard switch is used to enable them. 587 588* readelf can now parse archives. 589 590* objdump now accepts --debugging-tags to print the debug information in a 591 format compatible with ctags tool. 592 593* objcopy and strip now accept --only-keep-debug to create a file containing 594 those sections that would be stripped out by --strip-debug. The idea is that 595 this can be used in conjunction with the --add-gnu-debuglink switch to create 596 a two part program distribution - one a stripped executable and the other the 597 debugging info. 598 599* objcopy now accepts --add-gnu-debuglink=<file> to insert a .gnu_debuglink 600 section into a (presumably stripped) executable. This allows the debug 601 information for the file to be held in a separate file. 602 603* BFD marks the sections .comment and .note as 'n' in the BSD/POSIX 604 single-character representation. This can be checked by running nm 605 with the -a switch. 606 607Changes in 2.14: 608 609* Added --info switch to objcopy and strip. 610 611* Support for Vitesse IQ2000 added by Red Hat. 612 613* Added 'S' encoding to strings to allow the display of 8-bit characters. 614 615* Added --prefix-symbols=<text>, --prefix-sections=<text> and 616 --prefix-alloc-sections=<text> to objcopy. 617 618* readelf can handle the extensions to the DWARF2 spec used by the Unified 619 Parallel C compiler. 620 621* BFD no longer declares a "boolean" type, to avoid clashes with other 622 headers that declare the same. Users of BFD should replace boolean, 623 false and true, with int, 0 and 1, or define their own boolean type. 624 625* Support for IP2K added by Denis Chertykov. 626 627Changes in 2.13: 628 629* Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400 630 and FR500 included. 631 632Changes in version 2.12: 633 634* Support for Don Knuth's MMIX, by Hans-Peter Nilsson. 635 636* size: Add --totals to display summary of sizes (Berkeley format only). 637 638* readelf: Add --wide option to not break section header or segment listing 639 lines to fit into 80 columns. 640 641* strings: Add --encoding to display wide character strings. By Markus Kuhn. 642 643* objcopy: Add --rename-section to change section names. 644 645* readelf: Support added for DWARF 2.1 extensions. Support added for 646 displaying the contents of .debug.macinfo sections. 647 648* New command-line switches added to objcopy to allow symbols to be kept as 649 global symbols, and also to specify files containing lists of such symbols. 650 by Honda Hiroki. 651 652* Support for OpenRISC by Johan Rydberg. 653 654* New command-line switch to objcopy --alt-machine-code which creates a binary 655 with an alternate machine code if one is defined in the architecture 656 description. Only supported for ELF targets. By Alexandre Oliva. 657 658* New command-line switch to objcopy -B (or --binary-architecture) which sets 659 the architecture of the output file to the given argument. This option only 660 makes sense, if the input target is binary. Otherwise it is ignored. 661 By Stefan Geuken. 662 663* Support for PDP-11 by Lars Brinkhoff. 664 665Changes in binutils 2.11: 666 667* Add support for ARM v5t and v5te architectures and Intel's XScale ARM 668 extenstions. 669 670* Add --srec-len and --srec-forceS3 command-line switch to objcopy. 671 By Luciano Gemme. 672 673* Support for the MIPS32, by Anders Norlander. 674 675* Support for the i860, by Jason Eckhardt. 676 677* Support for CRIS (Axis Communications ETRAX series). 678 679Changes in binutils 2.10: 680 681* Support for 64-bit ELF on HPPA. 682 683* New command-line switch to objdump --file-start-context which shows the 684 entire file contents up to the source line first encountered for a given 685 file. 686 687* New command-line switch to objdump -M (or --disassembler-options) which takes 688 a parameter which can then be interpreted on a per-target basis by the 689 disassembler. Used by ARM targets to select register name sets, ISA, APCS or 690 raw verions. 691 692* objdump support for -mi386:intel which causes disassembly to be displayed 693 with intel syntax. 694 695* New program: readelf. This displays the contents of ELF format files, 696 regardless of target machine. 697 698* objcopy now takes --change-section-lma, --change-section-vma, and 699 --change-section-address options. The old --adjust-section-vma option is 700 equivalent to --change-section-address. The other --adjust-* options are now 701 renamed to --change-*, although --adjust-* continues to work. 702 703* objcopy has a --redefine-sym option that lets you rename symbols. 704 705* objcopy now takes a -j/--only-section option to copy only the specified 706 sections. 707 708* dlltool now supports the IMPORTS command. 709 710* dlltool now takes --export-all-symbols, --no-export-all-symbols, 711 --exclude-symbols, and --no-default-excludes options. 712 713Changes in binutils 2.9: 714 715* Added windres program, which can be used to manipulate resources in WIN32 716 files as used on Windows 95 and Windows NT. 717 718* The objcopy --gap-fill and --pad-to options operate on the LMA rather than 719 the VMA of the sections. 720 721* Added S modifier to ar to not build a symbol table. 722 723Changes in binutils 2.8: 724 725* The objdump disassembly format has been changed, and hopefully improved. Use 726 the new --prefix-addresses option to get the old format. There are also new 727 --disassemble-zeroes and --no-show-raw-insn options which affect disassembler 728 output. 729 730* Formats may now be specified as configuration triplets. For example, 731 objdump -b i386-pc-linux. The triplets are not passed through config.sub, 732 so they must be in canonical form. 733 734* Added new addr2line program. This uses the debugging information to convert 735 an address into a file name and line number within a program. 736 737* Added --change-leading-char argument to objcopy. 738 739* Added --weaken argument to objcopy. 740 741* objdump --dynamic-reloc now works on ELF executables and shared libraries. 742 743* Added --adjust-vma option to objdump. 744 745* Added -C/--demangle option to objdump. 746 747* Added -p/--preserve-dates option to strip and objcopy. 748 749Changes in binutils 2.7: 750 751* Added --enable-shared and --enable-commonbfdlib options to configure. 752 753* Added --debugging argument to objdump and objcopy. 754 755* Added --defined-only argument to nm. 756 757* Added --remove-leading-char argument to objcopy. 758 759* The objdump --line-numbers option is now meaningful with --reloc. 760 761* Added --line-numbers option to nm. 762 763* Added --endian/-EB/-EL option to objdump. 764 765* Added support for Alpha OpenVMS/AXP. 766 767Changes in binutils 2.6: 768 769* Added -N/--strip-symbol and -K/--keep-symbol arguments to strip and objcopy. 770 771* Added several arguments to objcopy to provide some control over how the new 772 file is laid out in memory. Also added binary output format to BFD to permit 773 generating plain binary files. 774 775* Added --start-address and --stop-address options to objdump. 776 777* ar and ranlib now work on AIX. The tools are now built by default on AIX. 778 779Changes in binutils 2.5: 780 781* Changed objdump -dr to dump the relocs interspersed with the assembly 782 listing, for a more useful listing of relocatable files. 783 784* Changed objdump -d/--disassemble to only disassemble SEC_CODE sections. 785 Added -D/--disassemble-all option to disassemble all sections. 786 787* Added --size-sort option to nm. 788 789* strip and objcopy should now be able to handle dynamically linked ELF 790 executables. 791 792Changes in binutils 2.4: 793 794* Support for HP-PA (by Jeff Law), i386 Mach (by David Mackenzie), RS/6000 and 795 PowerPC (except ar and ranlib; by Ian Taylor). 796 797* Support for Irix 5. 798 799* Programs `strip' and `objcopy' will not attempt to write dynamically linked 800 ELF output files, since BFD currently can't create them properly. 801 802Changes in binutils 2.3: 803 804* A new --stabs argument has been added to objdump to dump stabs sections in 805 ELF and COFF files. 806 807* A new program, nlmconv, has been added. It can convert object files into 808 Novell NetWare Loadable Modules. 809 810* The strings program has been added. 811 812Changes in binutils 2.2: 813 814* The 'copy' program has been renamed to 'objcopy', for consistency with 815 'objdump', and because 'copy' might more plausibly be used as a synonym for 816 'cp'. 817 818* The new stand-alone program c++filt is a filter that converts encoded 819 (mangled) C++ assembly-level identifiers to user-level names. (Note: This 820 may get moved to the gcc distribution.) 821 822* nm -o on an archive now prefixes each line with the archive name, matching 823 the output from BSD nm. 824 825* ar (and ld) can now read (but not write) BSD4.4-style archives. 826 827* New support for H8500, Z8000, and the Hitach SH. 828 829* Dis-assembler interface changed to allow sharing with gdb. 830 831* There is new Elf code, but it is not yet ready for general use. 832 833* There is the beginnings of a test suite. 834 835Changes in binutils 2.1: 836 837* There is now support for writing ECOFF files, so ld and the other utilities 838 should work on Risc/Ultrix and Irix. Please let us know how well this works. 839 840* ar now automatically creates a symbol table (a __.SYMDEF member, in the BSD 841 version), if there are any object files in the archive. So running ranlib is 842 now redundant (unless the non-standard q command is used). This is required 843 for Posix.2 conformance. 844 845* The archive-reading code now reads both BSD-style and SYSV-style archives 846 independently of the selected target format. This is to encourage people to 847 switch to SYSV-format, which has a number of advantages. 848 849* The strip and copy programs now have options to remove debug-symbols only 850 and/or local symbols only. They now also support long options. 851 852 853Copyright (C) 2012-2022 Free Software Foundation, Inc. 854 855Copying and distribution of this file, with or without modification, 856are permitted in any medium without royalty provided the copyright 857notice and this notice are preserved. 858 859Local variables: 860fill-column: 79 861End: 862