| 1 | -*- text -*- |
| 2 | |
| 3 | * Added --reduce-memory-overheads switch to reduce the size of the hash |
| 4 | tables used, at the expense of longer assembly times, and |
| 5 | --hash-size=<NUMBER> to set the size of the hash tables used by gas. |
| 6 | |
| 7 | * Macro names and macro parameter names can now be any identifier that would |
| 8 | also be legal as a symbol elsewhere. For macro parameter names, this is |
| 9 | known to cause problems in certain sources when the respective target uses |
| 10 | characters inconsistently, and thus macro parameter references may no longer |
| 11 | be recognized as such (see the documentation for details). |
| 12 | |
| 13 | * Support the .f_floating, .d_floating, .g_floating and .h_floating directives |
| 14 | for the VAX target in order to be more compatible with the VAX MACRO |
| 15 | assembler. |
| 16 | |
| 17 | * New command line option -mtune=[itanium1|itanium2] for IA64 targets. |
| 18 | |
| 19 | Changes in 2.16: |
| 20 | |
| 21 | * Redefinition of macros now results in an error. |
| 22 | |
| 23 | * New command line option -mhint.b=[ok|warning|error] for IA64 targets. |
| 24 | |
| 25 | * New command line option -munwind-check=[warning|error] for IA64 |
| 26 | targets. |
| 27 | |
| 28 | * The IA64 port now uses automatic dependency violation removal as its default |
| 29 | mode. |
| 30 | |
| 31 | * Port to MAXQ processor contributed by HCL Tech. |
| 32 | |
| 33 | * Added support for generating unwind tables for ARM ELF targets. |
| 34 | |
| 35 | * Add a -g command line option to generate debug information in the target's |
| 36 | preferred debug format. |
| 37 | |
| 38 | * Support for the crx-elf target added. |
| 39 | |
| 40 | * Support for the sh-symbianelf target added. |
| 41 | |
| 42 | * Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations |
| 43 | on pe[i]-i386; required for this target's DWARF 2 support. |
| 44 | |
| 45 | * Support for Motorola MCF521x/5249/547x/548x added. |
| 46 | |
| 47 | * Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC |
| 48 | instrucitons. |
| 49 | |
| 50 | * New command line option -mno-shared for MIPS ELF targets. |
| 51 | |
| 52 | * New command line option --alternate and pseudo-ops .altmacro and .noaltmacro |
| 53 | added to enter (and leave) alternate macro syntax mode. |
| 54 | |
| 55 | Changes in 2.15: |
| 56 | |
| 57 | * The MIPS -membedded-pic option (Embedded-PIC code generation) is |
| 58 | deprecated and will be removed in a future release. |
| 59 | |
| 60 | * Added PIC m32r Linux (ELF) and support to M32R assembler. |
| 61 | |
| 62 | * Added support for ARM V6. |
| 63 | |
| 64 | * Added support for sh4a and variants. |
| 65 | |
| 66 | * Support for Renesas M32R2 added. |
| 67 | |
| 68 | * Limited support for Mapping Symbols as specified in the ARM ELF |
| 69 | specification has been added to the arm assembler. |
| 70 | |
| 71 | * On ARM architectures, added a new gas directive ".unreq" that undoes |
| 72 | definitions created by ".req". |
| 73 | |
| 74 | * Support for Motorola ColdFire MCF528x added. |
| 75 | |
| 76 | * Added --gstabs+ switch to enable the generation of STABS debug format |
| 77 | information with GNU extensions. |
| 78 | |
| 79 | * Added support for MIPS64 Release 2. |
| 80 | |
| 81 | * Added support for v850e1. |
| 82 | |
| 83 | * Added -n switch for x86 assembler. By default, x86 GAS replaces |
| 84 | multiple nop instructions used for alignment within code sections |
| 85 | with multi-byte nop instructions such as leal 0(%esi,1),%esi. This |
| 86 | switch disables the optimization. |
| 87 | |
| 88 | * Removed -n option from MIPS assembler. It was not useful, and confused the |
| 89 | existing -non_shared option. |
| 90 | |
| 91 | Changes in 2.14: |
| 92 | |
| 93 | * Added support for MIPS32 Release 2. |
| 94 | |
| 95 | * Added support for Xtensa architecture. |
| 96 | |
| 97 | * Support for Intel's iWMMXt processor (an ARM variant) added. |
| 98 | |
| 99 | * An assembler test generator has been contributed and an example file that |
| 100 | uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c). |
| 101 | |
| 102 | * Support for SH2E added. |
| 103 | |
| 104 | * GASP has now been removed. |
| 105 | |
| 106 | * Support for Texas Instruments TMS320C4x and TMS320C3x series of |
| 107 | DSP's contributed by Michael Hayes and Svein E. Seldal. |
| 108 | |
| 109 | * Support for the Ubicom IP2xxx microcontroller added. |
| 110 | |
| 111 | Changes in 2.13: |
| 112 | |
| 113 | * Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400 |
| 114 | and FR500 included. |
| 115 | |
| 116 | * Support for DLX processor added. |
| 117 | |
| 118 | * GASP has now been deprecated and will be removed in a future release. Use |
| 119 | the macro facilities in GAS instead. |
| 120 | |
| 121 | * GASP now correctly parses floating point numbers. Unless the base is |
| 122 | explicitly specified, they are interpreted as decimal numbers regardless of |
| 123 | the currently specified base. |
| 124 | |
| 125 | Changes in 2.12: |
| 126 | |
| 127 | * Support for Don Knuth's MMIX, by Hans-Peter Nilsson. |
| 128 | |
| 129 | * Support for the OpenRISC 32-bit embedded processor by OpenCores. |
| 130 | |
| 131 | * The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for |
| 132 | specifying the target instruction set. The old method of specifying the |
| 133 | target processor has been deprecated, but is still accepted for |
| 134 | compatibility. |
| 135 | |
| 136 | * Support for the VFP floating-point instruction set has been added to |
| 137 | the ARM assembler. |
| 138 | |
| 139 | * New psuedo op: .incbin to include a set of binary data at a given point |
| 140 | in the assembly. Contributed by Anders Norlander. |
| 141 | |
| 142 | * The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated |
| 143 | but still works for compatability. |
| 144 | |
| 145 | * The MIPS assembler no longer issues a warning by default when it |
| 146 | generates a nop instruction from a macro. The new command line option |
| 147 | -n will turn on the warning. |
| 148 | |
| 149 | Changes in 2.11: |
| 150 | |
| 151 | * Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff. |
| 152 | |
| 153 | * x86 gas now supports the full Pentium4 instruction set. |
| 154 | |
| 155 | * Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs. |
| 156 | |
| 157 | * Support for Motorola 68HC11 and 68HC12. |
| 158 | |
| 159 | * Support for Texas Instruments TMS320C54x (tic54x). |
| 160 | |
| 161 | * Support for IA-64. |
| 162 | |
| 163 | * Support for i860, by Jason Eckhardt. |
| 164 | |
| 165 | * Support for CRIS (Axis Communications ETRAX series). |
| 166 | |
| 167 | * x86 gas has a new .arch pseudo op to specify the target CPU architecture. |
| 168 | |
| 169 | * x86 gas -q command line option quietens warnings about register size changes |
| 170 | due to suffix, indirect jmp/call without `*', stand-alone prefixes, and |
| 171 | translating various deprecated floating point instructions. |
| 172 | |
| 173 | Changes in 2.10: |
| 174 | |
| 175 | * Support for the ARM msr instruction was changed to only allow an immediate |
| 176 | operand when altering the flags field. |
| 177 | |
| 178 | * Support for ATMEL AVR. |
| 179 | |
| 180 | * Support for IBM 370 ELF. Somewhat experimental. |
| 181 | |
| 182 | * Support for numbers with suffixes. |
| 183 | |
| 184 | * Added support for breaking to the end of repeat loops. |
| 185 | |
| 186 | * Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL). |
| 187 | |
| 188 | * New .elseif pseudo-op added. |
| 189 | |
| 190 | * New --fatal-warnings option. |
| 191 | |
| 192 | * picoJava architecture support added. |
| 193 | |
| 194 | * Motorola MCore 210 processor support added. |
| 195 | |
| 196 | * A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386 |
| 197 | assembly programs with intel syntax. |
| 198 | |
| 199 | * New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code. |
| 200 | |
| 201 | * Added -gdwarf2 option to generate DWARF 2 debugging information. |
| 202 | |
| 203 | * Full 16-bit mode support for i386. |
| 204 | |
| 205 | * Greatly improved instruction operand checking for i386. This change will |
| 206 | produce errors or warnings on incorrect assembly code that previous versions |
| 207 | of gas accepted. If you get unexpected messages from code that worked with |
| 208 | older versions of gas, please double check the code before reporting a bug. |
| 209 | |
| 210 | * Weak symbol support added for COFF targets. |
| 211 | |
| 212 | * Mitsubishi D30V support added. |
| 213 | |
| 214 | * Texas Instruments c80 (tms320c80) support added. |
| 215 | |
| 216 | * i960 ELF support added. |
| 217 | |
| 218 | * ARM ELF support added. |
| 219 | |
| 220 | Changes in 2.9: |
| 221 | |
| 222 | * Texas Instruments c30 (tms320c30) support added. |
| 223 | |
| 224 | * The assembler now optimizes the exception frame information generated by egcs |
| 225 | and gcc 2.8. The new --traditional-format option disables this optimization. |
| 226 | |
| 227 | * Added --gstabs option to generate stabs debugging information. |
| 228 | |
| 229 | * The -a option takes a new suboption, m (e.g., -alm) to expand macros in a |
| 230 | listing. |
| 231 | |
| 232 | * Added -MD option to print dependencies. |
| 233 | |
| 234 | Changes in 2.8: |
| 235 | |
| 236 | * BeOS support added. |
| 237 | |
| 238 | * MIPS16 support added. |
| 239 | |
| 240 | * Motorola ColdFire 5200 support added (configure for m68k and use -m5200). |
| 241 | |
| 242 | * Alpha/VMS support added. |
| 243 | |
| 244 | * m68k options --base-size-default-16, --base-size-default-32, |
| 245 | --disp-size-default-16, and --disp-size-default-32 added. |
| 246 | |
| 247 | * The alignment directives now take an optional third argument, which is the |
| 248 | maximum number of bytes to skip. If doing the alignment would require |
| 249 | skipping more than the given number of bytes, the alignment is not done at |
| 250 | all. |
| 251 | |
| 252 | * The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. |
| 253 | |
| 254 | * The -a option takes a new suboption, c (e.g., -alc), to skip false |
| 255 | conditionals in listings. |
| 256 | |
| 257 | * Added new pseudo-op, .equiv; it's like .equ, except that it is an error if |
| 258 | the symbol is already defined. |
| 259 | |
| 260 | Changes in 2.7: |
| 261 | |
| 262 | * The PowerPC assembler now allows the use of symbolic register names (r0, |
| 263 | etc.) if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) |
| 264 | can be used any time. PowerPC 860 move to/from SPR instructions have been |
| 265 | added. |
| 266 | |
| 267 | * Alpha Linux (ELF) support added. |
| 268 | |
| 269 | * PowerPC ELF support added. |
| 270 | |
| 271 | * m68k Linux (ELF) support added. |
| 272 | |
| 273 | * i960 Hx/Jx support added. |
| 274 | |
| 275 | * i386/PowerPC gnu-win32 support added. |
| 276 | |
| 277 | * SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the |
| 278 | default is to build COFF-only support. To get a set of tools that generate |
| 279 | ELF (they'll understand both COFF and ELF), you must configure with |
| 280 | target=i386-unknown-sco3.2v5elf. |
| 281 | |
| 282 | * m88k-motorola-sysv3* support added. |
| 283 | |
| 284 | Changes in 2.6: |
| 285 | |
| 286 | * Gas now directly supports macros, without requiring GASP. |
| 287 | |
| 288 | * Gas now has an MRI assembler compatibility mode. Use -M or --mri to select |
| 289 | MRI mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the |
| 290 | ``.mri 0'' is seen; this can be convenient for inline assembler code. |
| 291 | |
| 292 | * Added --defsym SYM=VALUE option. |
| 293 | |
| 294 | * Added -mips4 support to MIPS assembler. |
| 295 | |
| 296 | * Added PIC support to Solaris and SPARC SunOS 4 assembler. |
| 297 | |
| 298 | Changes in 2.4: |
| 299 | |
| 300 | * Converted this directory to use an autoconf-generated configure script. |
| 301 | |
| 302 | * ARM support, from Richard Earnshaw. |
| 303 | |
| 304 | * Updated VMS support, from Pat Rankin, including considerably improved |
| 305 | debugging support. |
| 306 | |
| 307 | * Support for the control registers in the 68060. |
| 308 | |
| 309 | * Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to |
| 310 | provide for possible future gcc changes, for targets where gas provides some |
| 311 | features not available in the native assembler. If the native assembler is |
| 312 | used, it should become obvious pretty quickly what the problem is. |
| 313 | |
| 314 | * Usage message is available with "--help". |
| 315 | |
| 316 | * The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 |
| 317 | also, but didn't get into the NEWS file.) |
| 318 | |
| 319 | * Weak symbol support for a.out. |
| 320 | |
| 321 | * A bug in the listing code which could cause an infinite loop has been fixed. |
| 322 | Bugs in listings when generating a COFF object file have also been fixed. |
| 323 | |
| 324 | * Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by |
| 325 | Paul Kranenburg. |
| 326 | |
| 327 | * Improved Alpha support. Immediate constants can have a much larger range |
| 328 | now. Support for the 21164 has been contributed by Digital. |
| 329 | |
| 330 | * Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. |
| 331 | |
| 332 | Changes in 2.3: |
| 333 | |
| 334 | * Mach i386 support, by David Mackenzie and Ken Raeburn. |
| 335 | |
| 336 | * RS/6000 and PowerPC support by Ian Taylor. |
| 337 | |
| 338 | * VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, |
| 339 | based on mail received from various people. The `-h#' option should work |
| 340 | again too. |
| 341 | |
| 342 | * HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work |
| 343 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special |
| 344 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve |
| 345 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu |
| 346 | in the "dist" directory. |
| 347 | |
| 348 | * Vax support in gas fixed for BSD, so it builds and seems to run a couple |
| 349 | simple tests okay. I haven't put it through extensive testing. (GNU make is |
| 350 | currently required for BSD 4.3 builds.) |
| 351 | |
| 352 | * Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is |
| 353 | based on code donated by CMU, which used an a.out-based format. I'm afraid |
| 354 | the alpha-a.out support is pretty badly mangled, and much of it removed; |
| 355 | making it work will require rewriting it as BFD support for the format anyways. |
| 356 | |
| 357 | * Irix 5 support. |
| 358 | |
| 359 | * The test suites have been fixed up a bit, so that they should work with a |
| 360 | couple different versions of expect and dejagnu. |
| 361 | |
| 362 | * Symbols' values are now handled internally as expressions, permitting more |
| 363 | flexibility in evaluating them in some cases. Some details of relocation |
| 364 | handling have also changed, and simple constant pool management has been |
| 365 | added, to make the Alpha port easier. |
| 366 | |
| 367 | * New option "--statistics" for printing out program run times. This is |
| 368 | intended to be used with the gcc "-Q" option, which prints out times spent in |
| 369 | various phases of compilation. (You should be able to get all of them |
| 370 | printed out with "gcc -Q -Wa,--statistics", I think.) |
| 371 | |
| 372 | Changes in 2.2: |
| 373 | |
| 374 | * RS/6000 AIX and MIPS SGI Irix 5 support has been added. |
| 375 | |
| 376 | * Configurations that are still in development (and therefore are convenient to |
| 377 | have listed in configure.in) still get rejected without a minor change to |
| 378 | gas/Makefile.in, so people not doing development work shouldn't get the |
| 379 | impression that support for such configurations is actually believed to be |
| 380 | reliable. |
| 381 | |
| 382 | * The program name (usually "as") is printed when a fatal error message is |
| 383 | displayed. This should prevent some confusion about the source of occasional |
| 384 | messages about "internal errors". |
| 385 | |
| 386 | * ELF support is falling into place. Support for the 386 should be working. |
| 387 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. |
| 388 | |
| 389 | * Symbol values are maintained as expressions instead of being immediately |
| 390 | boiled down to add-symbol, sub-symbol, and constant. This permits slightly |
| 391 | more complex calculations involving symbols whose values are not alreadey |
| 392 | known. |
| 393 | |
| 394 | * DBX-style debugging info ("stabs") is now supported for COFF formats. |
| 395 | If any stabs directives are seen in the source, GAS will create two new |
| 396 | sections: a ".stab" and a ".stabstr" section. The format of the .stab |
| 397 | section is nearly identical to the a.out symbol format, and .stabstr is |
| 398 | its string table. For this to be useful, you must have configured GCC |
| 399 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB |
| 400 | that can use the stab sections (4.11 or later). |
| 401 | |
| 402 | * LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS |
| 403 | support is in progress. |
| 404 | |
| 405 | Changes in 2.1: |
| 406 | |
| 407 | * Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been |
| 408 | incorporated, but not well tested yet. |
| 409 | |
| 410 | * Altered the opcode table split for m68k; it should require less VM to compile |
| 411 | with gcc now. |
| 412 | |
| 413 | * Some minor adjustments to add (Convergent Technologies') Miniframe support, |
| 414 | suggested by Ronald Cole. |
| 415 | |
| 416 | * HPPA support (running OSF only, not HPUX) has been contributed by Utah. This |
| 417 | includes improved ELF support, which I've started adapting for SPARC Solaris |
| 418 | 2.x. Integration isn't completely, so it probably won't work. |
| 419 | |
| 420 | * HP9000/300 support, donated by HP, has been merged in. |
| 421 | |
| 422 | * Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. |
| 423 | |
| 424 | * Better error messages for unsupported configurations (e.g., hppa-hpux). |
| 425 | |
| 426 | * Test suite framework is starting to become reasonable. |
| 427 | |
| 428 | Changes in 2.0: |
| 429 | |
| 430 | * Mostly bug fixes. |
| 431 | |
| 432 | * Some more merging of BFD and ELF code, but ELF still doesn't work. |
| 433 | |
| 434 | Changes in 1.94: |
| 435 | |
| 436 | * BFD merge is partly done. Adventurous souls may try giving configure the |
| 437 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out |
| 438 | format accepts it; SPARC CPU accepts it. It's the default only for OS "elf" |
| 439 | or "solaris". (ELF isn't really supported yet. It needs work. I've got |
| 440 | some code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not |
| 441 | fully merged yet.) |
| 442 | |
| 443 | * The 68K opcode table has been split in half. It should now compile under gcc |
| 444 | without consuming ridiculous amounts of memory. |
| 445 | |
| 446 | * A couple data structures have been reduced in size. This should result in |
| 447 | saving a little bit of space at runtime. |
| 448 | |
| 449 | * Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF |
| 450 | code provided ROSE format support, which I haven't merged in yet. (I can |
| 451 | make it available, if anyone wants to try it out.) Ralph's code, for BSD |
| 452 | 4.4, supports a.out format. We don't have ECOFF support in just yet; it's |
| 453 | coming. |
| 454 | |
| 455 | * Support for the Hitachi H8/500 has been added. |
| 456 | |
| 457 | * VMS host and target support should be working now, thanks chiefly to Eric |
| 458 | Youngdale. |
| 459 | |
| 460 | Changes in 1.93.01: |
| 461 | |
| 462 | * For m68k, support for more processors has been added: 68040, CPU32, 68851. |
| 463 | |
| 464 | * For i386, .align is now power-of-two; was number-of-bytes. |
| 465 | |
| 466 | * For m68k, "%" is now accepted before register names. For COFF format, which |
| 467 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" |
| 468 | can be distinguished from the register. |
| 469 | |
| 470 | * Last public release was 1.38. Lots of configuration changes since then, lots |
| 471 | of new CPUs and formats, lots of bugs fixed. |
| 472 | |
| 473 | \f |
| 474 | Local variables: |
| 475 | fill-column: 79 |
| 476 | End: |