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