1-*- text -*- 2 3Changes in 2.28: 4 5* Add support for locating separate debug info files using the build-id 6 method, where the separate file has a name based upon the build-id of 7 the original file. 8 9* This version of binutils fixes a problem with PowerPC VLE 16A and 16D 10 relocations which were functionally swapped, for example, 11 R_PPC_VLE_HA16A performed like R_PPC_VLE_HA16D while R_PPC_VLE_HA16D 12 performed like R_PPC_VLE_HA16A. This could have been fixed by 13 renumbering relocations, which would keep object files created by an 14 older version of gas compatible with a newer ld. However, that would 15 require an ABI update, affecting other assemblers and linkers that 16 create and process the relocations correctly. It is recommended that 17 all VLE object files be recompiled, but ld can modify the relocations 18 if --vle-reloc-fixup is passed to ld. If the new ld command line 19 option is not used, ld will ld warn on finding relocations inconsistent 20 with the instructions being relocated. 21 22* The nm program has a new command line option (--with-version-strings) 23 which will display a symbol's version information, if any, after the 24 symbol's name. 25 26* The ARC port of objdump now accepts a -M option to specify the extra 27 instruction class(es) that should be disassembled. 28 29* The --remove-section option for objcopy and strip now accepts section 30 patterns starting with an exclamation point to indicate a non-matching 31 section. A non-matching section is removed from the set of sections 32 matched by an earlier --remove-section pattern. 33 34* The --only-section option for objcopy now accepts section patterns 35 starting with an exclamation point to indicate a non-matching section. 36 A non-matching section is removed from the set of sections matched by 37 an earlier --only-section pattern. 38 39* New --remove-relocations=SECTIONPATTERN option for objcopy and strip. 40 This option can be used to remove sections containing relocations. 41 The SECTIONPATTERN is the section to which the relocations apply, not 42 the relocation section itself. 43 44Changes in 2.27: 45 46* Add a configure option, --enable-64-bit-archive, to force use of a 47 64-bit format when creating an archive symbol index. 48 49* Add --elf-stt-common= option to objcopy for ELF targets to control 50 whether to convert common symbols to the STT_COMMON type. 51 52Changes in 2.26: 53 54* Add option to objcopy to insert new symbols into a file: 55 --add-symbol <name>=[<section>:]<value>[,<flags>] 56 57* Add support for the ARC EM/HS, and ARC600/700 architectures. 58 59* Extend objcopy --compress-debug-sections option to support 60 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF 61 targets. 62 63* Add --update-section option to objcopy. 64 65* Add --output-separator option to strings. 66 67Changes in 2.25: 68 69* Add --data option to strings to only print strings in loadable, initialized 70 data sections. Change the default behaviour to be --all, but add a new 71 configure time option of --disable-default-strings-all to restore the old 72 default behaviour. 73 74* Add --include-all-whitespace to strings. 75 76* Add --dump-section option to objcopy. 77 78* Add support for the Andes NDS32. 79 80Changes in 2.24: 81 82* Objcopy now supports wildcard characters in command line options that take 83 section names. 84 85* Add support for Altera Nios II. 86 87Changes in 2.23: 88 89* Add support for the VLE extension to the PowerPC architecture. 90 91* Add support for x64 Windows target of the delayed-load-library. 92 93* Add support for the Renesas RL78 architecture. 94 95Changes in 2.22: 96 97* Add support for displaying the contents of .debug.macro sections. 98 99* Add --preprocessor-arg option to windres to specify additional options 100 passed to preprocessor. 101 102* Add --dwarf-start and --dwarf-end to readelf and objdump. These are used by 103 the new Emacs mode, see dwarf-mode.el. 104 105* Add support for the Tilera TILEPro and TILE-Gx architectures. 106 107changes in 2.21: 108 109* Add --interleave-width option to objcopy to allowing copying a range of 110 bytes from the input to the output with the --interleave option. 111 112* Add support for the TMS320C6000 (TI C6X) processor family. 113 114* Readelf can now display ARM unwind tables (.ARM.exidx / .ARM.extab) using 115 the -u / --unwind option. 116 117* Add --dyn-syms to readelf to dump dynamic symbol table. 118 119* A new tool - elfedit - has been added to directly manipulate ELF format 120 binaries. 121 122* Add to dlltool .def file feature of aliasing PE internal symbol name by 123 '== <ID>' option. 124 125* Add a new command line option -a / --addresses to addr2line to display the 126 address before function name or source filename. 127 128* Add a new command line option -p / --pretty-print to addr2line to have 129 a more human readable output. 130 131* The hppa/som targets can now be compiled on any host. 132 133Changes in 2.20: 134 135* Add support for delay importing to dlltool. Use the --output-delaylib <file> 136 switch to create a delay-import library. The resulting app will load the dll 137 as soon as the first function is called. It will link to __delayLoadHelper2() 138 from the static delayimp library, which will import LoadLibraryA and 139 GetProcAddress from kernel32. 140 141* Add a new command line option, --insn-width=WIDTH, to objdump to specify 142 number of bytes to be displayed on a single line when disassembling 143 instructions. 144 145* Readelf can now display the relocated contents of a section as a sequence 146 of bytes via the --relocated-dump=<name|number> command line option. 147 148* The gprof program has been given a new command line option: 149 --external-symbols-table=<filename> which reads in symbols from a specified 150 file. 151 152* The plugin target has been added to bfd. It can load the same shared objects 153 used by gold and uses them to provide basic support for new file formats. 154 155* The verilog memory hex dump file format is now supported as an output format 156 for objcopy. 157 158* Add --file-alignment, --heap, --image-base, --section-alignment, 159 --stack and --subsystem command line options to objcopy, which will 160 set PE optional header. 161 162* Option --dwarf/-W of objdump is now as flexible as readelf --debug-dump/-w. 163 164* --as-needed now links in a dynamic library if it satisfies undefined 165 symbols in regular objects, or in other dynamic libraries. In the 166 latter case the library is not linked if it is found in a DT_NEEDED 167 entry of one of the libraries already linked. 168 169* Added --prefix=PREFIX and --prefix-strip=LEVEL switches to objdump to 170 add absolute paths for -S. 171 172* Add new option --use-nul-prefixed-import-tables to dlltool to allow fall- 173 back to old import table generation with null element prefix. 174 175* Added --identify-strict switch to cause --identify <implib> to 176 report an error when the import library is associated with 177 multiple DLLs. 178 179* Added --identify <implib> option to dlltool, which determines the 180 name of the DLL associated with the specified <implib>. 181 182* Support for PowerPC booke64 instructions has been removed. The assembler no 183 longer accepts -mbooke32 or -mbooke64 and the disassembler no longer accepts 184 -Mbooke32 or -Mbooke64. Instead, -mbooke and -Mbooke should be used. 185 186Changes in 2.19: 187 188* Added -wL switch to dump decoded contents of .debug_line. 189 190* Added support for "thin" archives which contain pathnames pointing to 191 object files rather than the files themselves and which contain a 192 flattened symbol index for all objects, and archives, which have been 193 added to the archive. 194 195* Added -F switch to objdump to include file offsets in the disassembly. 196 197* Added -c switch to readelf to allow string dumps of archive symbol index. 198 199* Support for SSE5 has been added to the i386 port. 200 201* Added -p switch to readelf to allow string dumps of sections. 202 203Changes in 2.18: 204 205* Resolved 37 coding problems in bfd including static array overruns, null 206 pointer dereferences and use of a malloc buffer after it has been freed, as 207 revealed by static analysis donated by Coverity, Inc. (http://scan.coverity.com). 208 209* The binutils sources are now released under version 3 of the GNU General 210 Public License. 211 212* A new tool "windmc" has been added for some targets. This is a message 213 compiler which attempts to be compatible with the MS version. 214 215* Add codepage support to the windres tool. It now supports many new 216 resource types (e.g. MANIFEST, TOOLBAR, etc). The output generation 217 for binary files is done now via bfd itself. The endianess problems 218 for different hosts are solved. Dumps of .res files can now be 219 re-compiled by windres without lossing resources or compilation errors. 220 Some problems on dialog resource translations are corrected. 221 222* Add --extract-symbol command line option to objcopy, which will 223 strip everything out of an ordinary object file or executable except 224 for its symbol table. Files containing just symbols can be useful 225 to some OSes. 226 227Changes in 2.17: 228 229* Add "-x NAME" to readelf in addition to "-x NUMBER". 230 231* Add -i and -t switches to cxxfilt. -i disables the display of implementation 232 specific extra demangling information (if any) and -t disables the demangling 233 of types. 234 235* Add support for the "@<file>" syntax to the command lines of all tools, so 236 that extra switches can be read from <file>. 237 238* Add "-W/--dwarf" to objdump to display the contents of the DWARF 239 debug sections. 240 241* Add "-t/--section-details" to readelf to display section details. 242 "-N/--full-section-name" is deprecated. 243 244* powerpc-linux ld now supports a variant form of PLT and GOT for the security 245 conscious. This form will automatically be chosen when ld detects that all 246 code in regular object files was generated by gcc -msecure-plt. The old PLT 247 and GOT may be forced by a new ld option, --bss-plt. 248 249* Add "-i/--inlines" to addr2line to print enclosing scope information 250 for inlined function chains, back to first non-inlined function. 251 252* Add "-N/--full-section-name" to readelf to display full section name. 253 254* Add "-M entry:<addr>" switch to objdump to specify a function entry address 255 when disassembling VAX binaries. 256 257* Add "--globalize-symbol <name>" and "--globalize-symbols <filename>" switches 258 to objcopy to convert local symbols into global symbols. 259 260* gprof now allows input files to have histogram records for 261 several memory ranges, provided those ranges are disjoint. 262 263Changes in 2.16: 264 265* Add "-g/--section-groups" to readelf to display section groups. 266 267* objcopy recognizes two new options --strip-unneeded-symbol and 268 --strip-unneeded-symbols, namely for use together with the wildcard 269 matching the original --strip-symbol/--strip-symbols provided, but 270 retaining any symbols matching but needed by relocations. 271 272* readelf can now display address ranges from .debug_range sections. This 273 happens automatically when a DW_AT_range attribute is encountered. The 274 command line switch --debug-dump=Ranges (or -wR) can also be used to display 275 the contents of the .debug_range section. 276 277* nm and objdump now have a switch "--special-syms" to enable the displaying of 278 symbols which the target considers to be special. By default these symbols 279 are no longer displayed. Currently the only special symbols are the Mapping 280 symbols used by the ARM port to mark transitions between text and data and 281 between ARM and THUMB code. 282 283* dlltool has a switch "--ext-prefix-alias <prefix>" to generate additional 284 import and export symbols with <preifx> prepended to them. 285 286Changes in 2.15: 287 288* objcopy for MIPS targets now accepts "-M no-aliases" as an option to the 289 disassembler to print the "raw" mips instruction mnemonic instead of some 290 pseudo instruction name. I.E. print "daddu" or "or" instead of "move", 291 "sll" instead of "nop", etc. 292 293* objcopy and strip can now take wildcard patterns in symbol names specified on 294 the command line provided that the --wildcard switch is used to enable them. 295 296* readelf can now parse archives. 297 298* objdump now accepts --debugging-tags to print the debug information in a 299 format compatible with ctags tool. 300 301* objcopy and strip now accept --only-keep-debug to create a file containing 302 those sections that would be stripped out by --strip-debug. The idea is that 303 this can be used in conjunction with the --add-gnu-debuglink switch to create 304 a two part program distribution - one a stripped executable and the other the 305 debugging info. 306 307* objcopy now accepts --add-gnu-debuglink=<file> to insert a .gnu_debuglink 308 section into a (presumably stripped) executable. This allows the debug 309 information for the file to be held in a separate file. 310 311* BFD marks the sections .comment and .note as 'n' in the BSD/POSIX 312 single-character representation. This can be checked by running nm 313 with the -a switch. 314 315Changes in 2.14: 316 317* Added --info switch to objcopy and strip. 318 319* Support for Vitesse IQ2000 added by Red Hat. 320 321* Added 'S' encoding to strings to allow the display of 8-bit characters. 322 323* Added --prefix-symbols=<text>, --prefix-sections=<text> and 324 --prefix-alloc-sections=<text> to objcopy. 325 326* readelf can handle the extensions to the DWARF2 spec used by the Unified 327 Parallel C compiler. 328 329* BFD no longer declares a "boolean" type, to avoid clashes with other 330 headers that declare the same. Users of BFD should replace boolean, 331 false and true, with int, 0 and 1, or define their own boolean type. 332 333* Support for IP2K added by Denis Chertykov. 334 335Changes in 2.13: 336 337* Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400 338 and FR500 included. 339 340Changes in version 2.12: 341 342* Support for Don Knuth's MMIX, by Hans-Peter Nilsson. 343 344* size: Add --totals to display summary of sizes (Berkeley format only). 345 346* readelf: Add --wide option to not break section header or segment listing 347 lines to fit into 80 columns. 348 349* strings: Add --encoding to display wide character strings. By Markus Kuhn. 350 351* objcopy: Add --rename-section to change section names. 352 353* readelf: Support added for DWARF 2.1 extensions. Support added for 354 displaying the contents of .debug.macinfo sections. 355 356* New command line switches added to objcopy to allow symbols to be kept as 357 global symbols, and also to specify files containing lists of such symbols. 358 by Honda Hiroki. 359 360* Support for OpenRISC by Johan Rydberg. 361 362* New command line switch to objcopy --alt-machine-code which creates a binary 363 with an alternate machine code if one is defined in the architecture 364 description. Only supported for ELF targets. By Alexandre Oliva. 365 366* New command line switch to objcopy -B (or --binary-architecture) which sets 367 the architecture of the output file to the given argument. This option only 368 makes sense, if the input target is binary. Otherwise it is ignored. 369 By Stefan Geuken. 370 371* Support for PDP-11 by Lars Brinkhoff. 372 373Changes in binutils 2.11: 374 375* Add support for ARM v5t and v5te architectures and Intel's XScale ARM 376 extenstions. 377 378* Add --srec-len and --srec-forceS3 command line switch to objcopy. 379 By Luciano Gemme. 380 381* Support for the MIPS32, by Anders Norlander. 382 383* Support for the i860, by Jason Eckhardt. 384 385* Support for CRIS (Axis Communications ETRAX series). 386 387Changes in binutils 2.10: 388 389* Support for 64-bit ELF on HPPA. 390 391* New command line switch to objdump --file-start-context which shows the 392 entire file contents up to the source line first encountered for a given 393 file. 394 395* New command line switch to objdump -M (or --disassembler-options) which takes 396 a parameter which can then be interpreted on a per-target basis by the 397 disassembler. Used by ARM targets to select register name sets, ISA, APCS or 398 raw verions. 399 400* objdump support for -mi386:intel which causes disassembly to be displayed 401 with intel syntax. 402 403* New program: readelf. This displays the contents of ELF format files, 404 regardless of target machine. 405 406* objcopy now takes --change-section-lma, --change-section-vma, and 407 --change-section-address options. The old --adjust-section-vma option is 408 equivalent to --change-section-address. The other --adjust-* options are now 409 renamed to --change-*, although --adjust-* continues to work. 410 411* objcopy has a --redefine-sym option that lets you rename symbols. 412 413* objcopy now takes a -j/--only-section option to copy only the specified 414 sections. 415 416* dlltool now supports the IMPORTS command. 417 418* dlltool now takes --export-all-symbols, --no-export-all-symbols, 419 --exclude-symbols, and --no-default-excludes options. 420 421Changes in binutils 2.9: 422 423* Added windres program, which can be used to manipulate resources in WIN32 424 files as used on Windows 95 and Windows NT. 425 426* The objcopy --gap-fill and --pad-to options operate on the LMA rather than 427 the VMA of the sections. 428 429* Added S modifier to ar to not build a symbol table. 430 431Changes in binutils 2.8: 432 433* The objdump disassembly format has been changed, and hopefully improved. Use 434 the new --prefix-addresses option to get the old format. There are also new 435 --disassemble-zeroes and --no-show-raw-insn options which affect disassembler 436 output. 437 438* Formats may now be specified as configuration triplets. For example, 439 objdump -b i386-pc-linux. The triplets are not passed through config.sub, 440 so they must be in canonical form. 441 442* Added new addr2line program. This uses the debugging information to convert 443 an address into a file name and line number within a program. 444 445* Added --change-leading-char argument to objcopy. 446 447* Added --weaken argument to objcopy. 448 449* objdump --dynamic-reloc now works on ELF executables and shared libraries. 450 451* Added --adjust-vma option to objdump. 452 453* Added -C/--demangle option to objdump. 454 455* Added -p/--preserve-dates option to strip and objcopy. 456 457Changes in binutils 2.7: 458 459* Added --enable-shared and --enable-commonbfdlib options to configure. 460 461* Added --debugging argument to objdump and objcopy. 462 463* Added --defined-only argument to nm. 464 465* Added --remove-leading-char argument to objcopy. 466 467* The objdump --line-numbers option is now meaningful with --reloc. 468 469* Added --line-numbers option to nm. 470 471* Added --endian/-EB/-EL option to objdump. 472 473* Added support for Alpha OpenVMS/AXP. 474 475Changes in binutils 2.6: 476 477* Added -N/--strip-symbol and -K/--keep-symbol arguments to strip and objcopy. 478 479* Added several arguments to objcopy to provide some control over how the new 480 file is laid out in memory. Also added binary output format to BFD to permit 481 generating plain binary files. 482 483* Added --start-address and --stop-address options to objdump. 484 485* ar and ranlib now work on AIX. The tools are now built by default on AIX. 486 487Changes in binutils 2.5: 488 489* Changed objdump -dr to dump the relocs interspersed with the assembly 490 listing, for a more useful listing of relocatable files. 491 492* Changed objdump -d/--disassemble to only disassemble SEC_CODE sections. 493 Added -D/--disassemble-all option to disassemble all sections. 494 495* Added --size-sort option to nm. 496 497* strip and objcopy should now be able to handle dynamically linked ELF 498 executables. 499 500Changes in binutils 2.4: 501 502* Support for HP-PA (by Jeff Law), i386 Mach (by David Mackenzie), RS/6000 and 503 PowerPC (except ar and ranlib; by Ian Taylor). 504 505* Support for Irix 5. 506 507* Programs `strip' and `objcopy' will not attempt to write dynamically linked 508 ELF output files, since BFD currently can't create them properly. 509 510Changes in binutils 2.3: 511 512* A new --stabs argument has been added to objdump to dump stabs sections in 513 ELF and COFF files. 514 515* A new program, nlmconv, has been added. It can convert object files into 516 Novell NetWare Loadable Modules. 517 518* The strings program has been added. 519 520Changes in binutils 2.2: 521 522* The 'copy' program has been renamed to 'objcopy', for consistency with 523 'objdump', and because 'copy' might more plausibly be used as a synonym for 524 'cp'. 525 526* The new stand-alone program c++filt is a filter that converts encoded 527 (mangled) C++ assembly-level identifiers to user-level names. (Note: This 528 may get moved to the gcc distribution.) 529 530* nm -o on an archive now prefixes each line with the archive name, matching 531 the output from BSD nm. 532 533* ar (and ld) can now read (but not write) BSD4.4-style archives. 534 535* New support for H8500, Z8000, and the Hitach SH. 536 537* Dis-assembler interface changed to allow sharing with gdb. 538 539* There is new Elf code, but it is not yet ready for general use. 540 541* There is the beginnings of a test suite. 542 543Changes in binutils 2.1: 544 545* There is now support for writing ECOFF files, so ld and the other utilities 546 should work on Risc/Ultrix and Irix. Please let us know how well this works. 547 548* ar now automatically creates a symbol table (a __.SYMDEF member, in the BSD 549 version), if there are any object files in the archive. So running ranlib is 550 now redundant (unless the non-standard q command is used). This is required 551 for Posix.2 conformance. 552 553* The archive-reading code now reads both BSD-style and SYSV-style archives 554 independently of the selected target format. This is to encourage people to 555 switch to SYSV-format, which has a number of advantages. 556 557* The strip and copy programs now have options to remove debug-symbols only 558 and/or local symbols only. They now also support long options. 559 560 561Copyright (C) 2012-2017 Free Software Foundation, Inc. 562 563Copying and distribution of this file, with or without modification, 564are permitted in any medium without royalty provided the copyright 565notice and this notice are preserved. 566 567Local variables: 568fill-column: 79 569End: 570