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252b5132 RH |
1 | -*- text -*- |
2 | ||
3 | Changes in 2.10: | |
4 | ||
3fd9f047 TW |
5 | Support for numbers with suffixes. |
6 | ||
6a6987a9 TW |
7 | Added support for breaking to the end of repeat loops. |
8 | ||
9 | Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL). | |
10 | ||
3fd9f047 TW |
11 | New .elseif pseudo-op added. |
12 | ||
1f776aa5 GK |
13 | New --fatal-warnings option. |
14 | ||
041dd5a9 | 15 | picoJava architecture support added. |
252b5132 | 16 | |
041dd5a9 ILT |
17 | Motorola MCore 210 processor support added. |
18 | ||
19 | A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386 | |
20 | assembly programs with intel syntax. | |
252b5132 RH |
21 | |
22 | New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code. | |
23 | ||
041dd5a9 ILT |
24 | Added -gdwarf2 option to generate DWARF 2 debugging information. |
25 | ||
252b5132 RH |
26 | Full 16-bit mode support for i386. |
27 | ||
28 | Greatly improved instruction operand checking for i386. This change will | |
29 | produce errors or warnings on incorrect assembly code that previous versions of | |
30 | gas accepted. If you get unexpected messages from code that worked with older | |
31 | versions of gas, please double check the code before reporting a bug. | |
32 | ||
33 | Weak symbol support added for COFF targets. | |
34 | ||
35 | Mitsubishi D30V support added. | |
36 | ||
37 | Texas Instruments c80 (tms320c80) support added. | |
38 | ||
bedf545c ILT |
39 | i960 ELF support added. |
40 | ||
252b5132 RH |
41 | Changes in 2.9: |
42 | ||
43 | Texas Instruments c30 (tms320c30) support added. | |
44 | ||
45 | The assembler now optimizes the exception frame information generated by egcs | |
46 | and gcc 2.8. The new --traditional-format option disables this optimization. | |
47 | ||
48 | Added --gstabs option to generate stabs debugging information. | |
49 | ||
50 | The -a option takes a new suboption, m (e.g., -alm) to expand macros in a | |
51 | listing. | |
52 | ||
53 | Added -MD option to print dependencies. | |
54 | ||
55 | Changes in 2.8: | |
56 | ||
57 | BeOS support added. | |
58 | ||
59 | MIPS16 support added. | |
60 | ||
61 | Motorola ColdFire 5200 support added (configure for m68k and use -m5200). | |
62 | ||
63 | Alpha/VMS support added. | |
64 | ||
65 | m68k options --base-size-default-16, --base-size-default-32, | |
66 | --disp-size-default-16, and --disp-size-default-32 added. | |
67 | ||
68 | The alignment directives now take an optional third argument, which is the | |
69 | maximum number of bytes to skip. If doing the alignment would require skipping | |
70 | more than the given number of bytes, the alignment is not done at all. | |
71 | ||
72 | The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. | |
73 | ||
74 | The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals | |
75 | in listings. | |
76 | ||
77 | Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the | |
78 | symbol is already defined. | |
79 | ||
80 | Changes in 2.7: | |
81 | ||
82 | The PowerPC assembler now allows the use of symbolic register names (r0, etc.) | |
83 | if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be | |
84 | used any time. PowerPC 860 move to/from SPR instructions have been added. | |
85 | ||
86 | Alpha Linux (ELF) support added. | |
87 | ||
88 | PowerPC ELF support added. | |
89 | ||
90 | m68k Linux (ELF) support added. | |
91 | ||
92 | i960 Hx/Jx support added. | |
93 | ||
94 | i386/PowerPC gnu-win32 support added. | |
95 | ||
96 | SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the | |
97 | default is to build COFF-only support. To get a set of tools that generate ELF | |
98 | (they'll understand both COFF and ELF), you must configure with | |
99 | target=i386-unknown-sco3.2v5elf. | |
100 | ||
101 | m88k-motorola-sysv3* support added. | |
102 | ||
103 | Changes in 2.6: | |
104 | ||
105 | Gas now directly supports macros, without requiring GASP. | |
106 | ||
107 | Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI | |
108 | mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri | |
109 | 0'' is seen; this can be convenient for inline assembler code. | |
110 | ||
111 | Added --defsym SYM=VALUE option. | |
112 | ||
113 | Added -mips4 support to MIPS assembler. | |
114 | ||
115 | Added PIC support to Solaris and SPARC SunOS 4 assembler. | |
116 | ||
117 | Changes in 2.4: | |
118 | ||
119 | Converted this directory to use an autoconf-generated configure script. | |
120 | ||
121 | ARM support, from Richard Earnshaw. | |
122 | ||
123 | Updated VMS support, from Pat Rankin, including considerably improved debugging | |
124 | support. | |
125 | ||
126 | Support for the control registers in the 68060. | |
127 | ||
128 | Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to | |
129 | provide for possible future gcc changes, for targets where gas provides some | |
130 | features not available in the native assembler. If the native assembler is | |
131 | used, it should become obvious pretty quickly what the problem is. | |
132 | ||
133 | Usage message is available with "--help". | |
134 | ||
135 | The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 | |
136 | also, but didn't get into the NEWS file.) | |
137 | ||
138 | Weak symbol support for a.out. | |
139 | ||
140 | A bug in the listing code which could cause an infinite loop has been fixed. | |
141 | Bugs in listings when generating a COFF object file have also been fixed. | |
142 | ||
143 | Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul | |
144 | Kranenburg. | |
145 | ||
146 | Improved Alpha support. Immediate constants can have a much larger range now. | |
147 | Support for the 21164 has been contributed by Digital. | |
148 | ||
149 | Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. | |
150 | ||
151 | Changes in 2.3: | |
152 | ||
153 | Mach i386 support, by David Mackenzie and Ken Raeburn. | |
154 | ||
155 | RS/6000 and PowerPC support by Ian Taylor. | |
156 | ||
157 | VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, | |
158 | based on mail received from various people. The `-h#' option should work again | |
159 | too. | |
160 | ||
161 | HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work | |
162 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special | |
163 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve | |
164 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu | |
165 | in the "dist" directory. | |
166 | ||
167 | Vax support in gas fixed for BSD, so it builds and seems to run a couple simple | |
168 | tests okay. I haven't put it through extensive testing. (GNU make is | |
169 | currently required for BSD 4.3 builds.) | |
170 | ||
171 | Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is | |
172 | based on code donated by CMU, which used an a.out-based format. I'm afraid the | |
173 | alpha-a.out support is pretty badly mangled, and much of it removed; making it | |
174 | work will require rewriting it as BFD support for the format anyways. | |
175 | ||
176 | Irix 5 support. | |
177 | ||
178 | The test suites have been fixed up a bit, so that they should work with a | |
179 | couple different versions of expect and dejagnu. | |
180 | ||
181 | Symbols' values are now handled internally as expressions, permitting more | |
182 | flexibility in evaluating them in some cases. Some details of relocation | |
183 | handling have also changed, and simple constant pool management has been added, | |
184 | to make the Alpha port easier. | |
185 | ||
186 | New option "--statistics" for printing out program run times. This is intended | |
187 | to be used with the gcc "-Q" option, which prints out times spent in various | |
188 | phases of compilation. (You should be able to get all of them printed out with | |
189 | "gcc -Q -Wa,--statistics", I think.) | |
190 | ||
191 | ---------------------------------------------------------------- | |
192 | ||
193 | Changes in 2.2: | |
194 | ||
195 | RS/6000 AIX and MIPS SGI Irix 5 support has been added. | |
196 | ||
197 | Configurations that are still in development (and therefore are convenient to | |
198 | have listed in configure.in) still get rejected without a minor change to | |
199 | gas/Makefile.in, so people not doing development work shouldn't get the | |
200 | impression that support for such configurations is actually believed to be | |
201 | reliable. | |
202 | ||
203 | The program name (usually "as") is printed when a fatal error message is | |
204 | displayed. This should prevent some confusion about the source of occasional | |
205 | messages about "internal errors". | |
206 | ||
207 | ELF support is falling into place. Support for the 386 should be working. | |
208 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. | |
209 | ||
210 | Symbol values are maintained as expressions instead of being immediately boiled | |
211 | down to add-symbol, sub-symbol, and constant. This permits slightly more | |
212 | complex calculations involving symbols whose values are not alreadey known. | |
213 | ||
214 | DBX-style debugging info ("stabs") is now supported for COFF formats. | |
215 | If any stabs directives are seen in the source, GAS will create two new | |
216 | sections: a ".stab" and a ".stabstr" section. The format of the .stab | |
217 | section is nearly identical to the a.out symbol format, and .stabstr is | |
218 | its string table. For this to be useful, you must have configured GCC | |
219 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB | |
220 | that can use the stab sections (4.11 or later). | |
221 | ||
222 | LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS | |
223 | support is in progress. | |
224 | ||
225 | ---------------------------------------------------------------- | |
226 | ||
227 | Changes in 2.1: | |
228 | ||
229 | Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been | |
230 | incorporated, but not well tested yet. | |
231 | ||
232 | Altered the opcode table split for m68k; it should require less VM to compile | |
233 | with gcc now. | |
234 | ||
235 | Some minor adjustments to add (Convergent Technologies') Miniframe support, | |
236 | suggested by Ronald Cole. | |
237 | ||
238 | HPPA support (running OSF only, not HPUX) has been contributed by Utah. This | |
239 | includes improved ELF support, which I've started adapting for SPARC Solaris | |
240 | 2.x. Integration isn't completely, so it probably won't work. | |
241 | ||
242 | HP9000/300 support, donated by HP, has been merged in. | |
243 | ||
244 | Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. | |
245 | ||
246 | Better error messages for unsupported configurations (e.g., hppa-hpux). | |
247 | ||
248 | Test suite framework is starting to become reasonable. | |
249 | ||
250 | ---------------------------------------------------------------- | |
251 | ||
252 | Changes in 2.0: | |
253 | ||
254 | Mostly bug fixes. | |
255 | ||
256 | Some more merging of BFD and ELF code, but ELF still doesn't work. | |
257 | ||
258 | ---------------------------------------------------------------- | |
259 | ||
260 | Changes in 1.94: | |
261 | ||
262 | BFD merge is partly done. Adventurous souls may try giving configure the | |
263 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format | |
264 | accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or | |
265 | "solaris". (ELF isn't really supported yet. It needs work. I've got some | |
266 | code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully | |
267 | merged yet.) | |
268 | ||
269 | The 68K opcode table has been split in half. It should now compile under gcc | |
270 | without consuming ridiculous amounts of memory. | |
271 | ||
272 | A couple data structures have been reduced in size. This should result in | |
273 | saving a little bit of space at runtime. | |
274 | ||
275 | Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF | |
276 | code provided ROSE format support, which I haven't merged in yet. (I can make | |
277 | it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4, | |
278 | supports a.out format. We don't have ECOFF support in just yet; it's coming. | |
279 | ||
280 | Support for the Hitachi H8/500 has been added. | |
281 | ||
282 | VMS host and target support should be working now, thanks chiefly to Eric | |
283 | Youngdale. | |
284 | ||
285 | ---------------------------------------------------------------- | |
286 | ||
287 | Changes in 1.93.01: | |
288 | ||
289 | For m68k, support for more processors has been added: 68040, CPU32, 68851. | |
290 | ||
291 | For i386, .align is now power-of-two; was number-of-bytes. | |
292 | ||
293 | For m68k, "%" is now accepted before register names. For COFF format, which | |
294 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" | |
295 | can be distinguished from the register. | |
296 | ||
297 | Last public release was 1.38. Lots of configuration changes since then, lots | |
298 | of new CPUs and formats, lots of bugs fixed. | |
299 | ||
300 | \f | |
301 | Local variables: | |
302 | fill-column: 79 | |
303 | End: |