| 1 | -*- text -*- |
| 2 | |
| 3 | Changes in 2.10: |
| 4 | |
| 5 | Full 16-bit mode support for i386. |
| 6 | |
| 7 | Greatly improved instruction operand checking for i386. This change will |
| 8 | produce errors or warnings on incorrect assembly code that previous versions of |
| 9 | gas accepted. If you get unexpected messages from code that worked with older |
| 10 | versions of gas, please double check the code before reporting a bug. |
| 11 | |
| 12 | Changes in 2.9: |
| 13 | |
| 14 | Texas Instruction c30 (tms320c30) support added. |
| 15 | |
| 16 | The assembler now optimizes the exception frame information generated by egcs |
| 17 | and gcc 2.8. The new --traditional-format option disables this optimization. |
| 18 | |
| 19 | Added --gstabs option to generate stabs debugging information. |
| 20 | |
| 21 | The -a option takes a new suboption, m (e.g., -alm) to expand macros in a |
| 22 | listing. |
| 23 | |
| 24 | Added -MD option to print dependencies. |
| 25 | |
| 26 | Changes in 2.8: |
| 27 | |
| 28 | BeOS support added. |
| 29 | |
| 30 | MIPS16 support added. |
| 31 | |
| 32 | Motorola ColdFire 5200 support added (configure for m68k and use -m5200). |
| 33 | |
| 34 | Alpha/VMS support added. |
| 35 | |
| 36 | m68k options --base-size-default-16, --base-size-default-32, |
| 37 | --disp-size-default-16, and --disp-size-default-32 added. |
| 38 | |
| 39 | The alignment directives now take an optional third argument, which is the |
| 40 | maximum number of bytes to skip. If doing the alignment would require skipping |
| 41 | more than the given number of bytes, the alignment is not done at all. |
| 42 | |
| 43 | The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. |
| 44 | |
| 45 | The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals |
| 46 | in listings. |
| 47 | |
| 48 | Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the |
| 49 | symbol is already defined. |
| 50 | |
| 51 | Changes in 2.7: |
| 52 | |
| 53 | The PowerPC assembler now allows the use of symbolic register names (r0, etc.) |
| 54 | if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be |
| 55 | used any time. PowerPC 860 move to/from SPR instructions have been added. |
| 56 | |
| 57 | Alpha Linux (ELF) support added. |
| 58 | |
| 59 | PowerPC ELF support added. |
| 60 | |
| 61 | m68k Linux (ELF) support added. |
| 62 | |
| 63 | i960 Hx/Jx support added. |
| 64 | |
| 65 | i386/PowerPC gnu-win32 support added. |
| 66 | |
| 67 | SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the |
| 68 | default is to build COFF-only support. To get a set of tools that generate ELF |
| 69 | (they'll understand both COFF and ELF), you must configure with |
| 70 | target=i386-unknown-sco3.2v5elf. |
| 71 | |
| 72 | m88k-motorola-sysv3* support added. |
| 73 | |
| 74 | Changes in 2.6: |
| 75 | |
| 76 | Gas now directly supports macros, without requiring GASP. |
| 77 | |
| 78 | Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI |
| 79 | mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri |
| 80 | 0'' is seen; this can be convenient for inline assembler code. |
| 81 | |
| 82 | Added --defsym SYM=VALUE option. |
| 83 | |
| 84 | Added -mips4 support to MIPS assembler. |
| 85 | |
| 86 | Added PIC support to Solaris and SPARC SunOS 4 assembler. |
| 87 | |
| 88 | Changes in 2.4: |
| 89 | |
| 90 | Converted this directory to use an autoconf-generated configure script. |
| 91 | |
| 92 | ARM support, from Richard Earnshaw. |
| 93 | |
| 94 | Updated VMS support, from Pat Rankin, including considerably improved debugging |
| 95 | support. |
| 96 | |
| 97 | Support for the control registers in the 68060. |
| 98 | |
| 99 | Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to |
| 100 | provide for possible future gcc changes, for targets where gas provides some |
| 101 | features not available in the native assembler. If the native assembler is |
| 102 | used, it should become obvious pretty quickly what the problem is. |
| 103 | |
| 104 | Usage message is available with "--help". |
| 105 | |
| 106 | The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 |
| 107 | also, but didn't get into the NEWS file.) |
| 108 | |
| 109 | Weak symbol support for a.out. |
| 110 | |
| 111 | A bug in the listing code which could cause an infinite loop has been fixed. |
| 112 | Bugs in listings when generating a COFF object file have also been fixed. |
| 113 | |
| 114 | Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul |
| 115 | Kranenburg. |
| 116 | |
| 117 | Improved Alpha support. Immediate constants can have a much larger range now. |
| 118 | Support for the 21164 has been contributed by Digital. |
| 119 | |
| 120 | Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. |
| 121 | |
| 122 | Changes in 2.3: |
| 123 | |
| 124 | Mach i386 support, by David Mackenzie and Ken Raeburn. |
| 125 | |
| 126 | RS/6000 and PowerPC support by Ian Taylor. |
| 127 | |
| 128 | VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, |
| 129 | based on mail received from various people. The `-h#' option should work again |
| 130 | too. |
| 131 | |
| 132 | HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work |
| 133 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special |
| 134 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve |
| 135 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu |
| 136 | in the "dist" directory. |
| 137 | |
| 138 | Vax support in gas fixed for BSD, so it builds and seems to run a couple simple |
| 139 | tests okay. I haven't put it through extensive testing. (GNU make is |
| 140 | currently required for BSD 4.3 builds.) |
| 141 | |
| 142 | Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is |
| 143 | based on code donated by CMU, which used an a.out-based format. I'm afraid the |
| 144 | alpha-a.out support is pretty badly mangled, and much of it removed; making it |
| 145 | work will require rewriting it as BFD support for the format anyways. |
| 146 | |
| 147 | Irix 5 support. |
| 148 | |
| 149 | The test suites have been fixed up a bit, so that they should work with a |
| 150 | couple different versions of expect and dejagnu. |
| 151 | |
| 152 | Symbols' values are now handled internally as expressions, permitting more |
| 153 | flexibility in evaluating them in some cases. Some details of relocation |
| 154 | handling have also changed, and simple constant pool management has been added, |
| 155 | to make the Alpha port easier. |
| 156 | |
| 157 | New option "--statistics" for printing out program run times. This is intended |
| 158 | to be used with the gcc "-Q" option, which prints out times spent in various |
| 159 | phases of compilation. (You should be able to get all of them printed out with |
| 160 | "gcc -Q -Wa,--statistics", I think.) |
| 161 | |
| 162 | ---------------------------------------------------------------- |
| 163 | |
| 164 | Changes in 2.2: |
| 165 | |
| 166 | RS/6000 AIX and MIPS SGI Irix 5 support has been added. |
| 167 | |
| 168 | Configurations that are still in development (and therefore are convenient to |
| 169 | have listed in configure.in) still get rejected without a minor change to |
| 170 | gas/Makefile.in, so people not doing development work shouldn't get the |
| 171 | impression that support for such configurations is actually believed to be |
| 172 | reliable. |
| 173 | |
| 174 | The program name (usually "as") is printed when a fatal error message is |
| 175 | displayed. This should prevent some confusion about the source of occasional |
| 176 | messages about "internal errors". |
| 177 | |
| 178 | ELF support is falling into place. Support for the 386 should be working. |
| 179 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. |
| 180 | |
| 181 | Symbol values are maintained as expressions instead of being immediately boiled |
| 182 | down to add-symbol, sub-symbol, and constant. This permits slightly more |
| 183 | complex calculations involving symbols whose values are not alreadey known. |
| 184 | |
| 185 | DBX-style debugging info ("stabs") is now supported for COFF formats. |
| 186 | If any stabs directives are seen in the source, GAS will create two new |
| 187 | sections: a ".stab" and a ".stabstr" section. The format of the .stab |
| 188 | section is nearly identical to the a.out symbol format, and .stabstr is |
| 189 | its string table. For this to be useful, you must have configured GCC |
| 190 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB |
| 191 | that can use the stab sections (4.11 or later). |
| 192 | |
| 193 | LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS |
| 194 | support is in progress. |
| 195 | |
| 196 | ---------------------------------------------------------------- |
| 197 | |
| 198 | Changes in 2.1: |
| 199 | |
| 200 | Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been |
| 201 | incorporated, but not well tested yet. |
| 202 | |
| 203 | Altered the opcode table split for m68k; it should require less VM to compile |
| 204 | with gcc now. |
| 205 | |
| 206 | Some minor adjustments to add (Convergent Technologies') Miniframe support, |
| 207 | suggested by Ronald Cole. |
| 208 | |
| 209 | HPPA support (running OSF only, not HPUX) has been contributed by Utah. This |
| 210 | includes improved ELF support, which I've started adapting for SPARC Solaris |
| 211 | 2.x. Integration isn't completely, so it probably won't work. |
| 212 | |
| 213 | HP9000/300 support, donated by HP, has been merged in. |
| 214 | |
| 215 | Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. |
| 216 | |
| 217 | Better error messages for unsupported configurations (e.g., hppa-hpux). |
| 218 | |
| 219 | Test suite framework is starting to become reasonable. |
| 220 | |
| 221 | ---------------------------------------------------------------- |
| 222 | |
| 223 | Changes in 2.0: |
| 224 | |
| 225 | Mostly bug fixes. |
| 226 | |
| 227 | Some more merging of BFD and ELF code, but ELF still doesn't work. |
| 228 | |
| 229 | ---------------------------------------------------------------- |
| 230 | |
| 231 | Changes in 1.94: |
| 232 | |
| 233 | BFD merge is partly done. Adventurous souls may try giving configure the |
| 234 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format |
| 235 | accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or |
| 236 | "solaris". (ELF isn't really supported yet. It needs work. I've got some |
| 237 | code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully |
| 238 | merged yet.) |
| 239 | |
| 240 | The 68K opcode table has been split in half. It should now compile under gcc |
| 241 | without consuming ridiculous amounts of memory. |
| 242 | |
| 243 | A couple data structures have been reduced in size. This should result in |
| 244 | saving a little bit of space at runtime. |
| 245 | |
| 246 | Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF |
| 247 | code provided ROSE format support, which I haven't merged in yet. (I can make |
| 248 | it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4, |
| 249 | supports a.out format. We don't have ECOFF support in just yet; it's coming. |
| 250 | |
| 251 | Support for the Hitachi H8/500 has been added. |
| 252 | |
| 253 | VMS host and target support should be working now, thanks chiefly to Eric |
| 254 | Youngdale. |
| 255 | |
| 256 | ---------------------------------------------------------------- |
| 257 | |
| 258 | Changes in 1.93.01: |
| 259 | |
| 260 | For m68k, support for more processors has been added: 68040, CPU32, 68851. |
| 261 | |
| 262 | For i386, .align is now power-of-two; was number-of-bytes. |
| 263 | |
| 264 | For m68k, "%" is now accepted before register names. For COFF format, which |
| 265 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" |
| 266 | can be distinguished from the register. |
| 267 | |
| 268 | Last public release was 1.38. Lots of configuration changes since then, lots |
| 269 | of new CPUs and formats, lots of bugs fixed. |
| 270 | |
| 271 | \f |
| 272 | Local variables: |
| 273 | fill-column: 79 |
| 274 | End: |