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252b5132 RH |
1 | -*- text -*- |
2 | ||
3 | Changes in 2.10: | |
4 | ||
adde6300 AM |
5 | Support for ATMEL AVR. |
6 | ||
b5ebe70e AM |
7 | Support for IBM 370 ELF. Somewhat experimental. |
8 | ||
3fd9f047 TW |
9 | Support for numbers with suffixes. |
10 | ||
6a6987a9 TW |
11 | Added support for breaking to the end of repeat loops. |
12 | ||
13 | Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL). | |
14 | ||
3fd9f047 TW |
15 | New .elseif pseudo-op added. |
16 | ||
1f776aa5 GK |
17 | New --fatal-warnings option. |
18 | ||
041dd5a9 | 19 | picoJava architecture support added. |
252b5132 | 20 | |
041dd5a9 ILT |
21 | Motorola MCore 210 processor support added. |
22 | ||
23 | A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386 | |
24 | assembly programs with intel syntax. | |
252b5132 RH |
25 | |
26 | New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code. | |
27 | ||
041dd5a9 ILT |
28 | Added -gdwarf2 option to generate DWARF 2 debugging information. |
29 | ||
252b5132 RH |
30 | Full 16-bit mode support for i386. |
31 | ||
32 | Greatly improved instruction operand checking for i386. This change will | |
33 | produce errors or warnings on incorrect assembly code that previous versions of | |
34 | gas accepted. If you get unexpected messages from code that worked with older | |
35 | versions of gas, please double check the code before reporting a bug. | |
36 | ||
37 | Weak symbol support added for COFF targets. | |
38 | ||
39 | Mitsubishi D30V support added. | |
40 | ||
41 | Texas Instruments c80 (tms320c80) support added. | |
42 | ||
bedf545c ILT |
43 | i960 ELF support added. |
44 | ||
252b5132 RH |
45 | Changes in 2.9: |
46 | ||
47 | Texas Instruments c30 (tms320c30) support added. | |
48 | ||
49 | The assembler now optimizes the exception frame information generated by egcs | |
50 | and gcc 2.8. The new --traditional-format option disables this optimization. | |
51 | ||
52 | Added --gstabs option to generate stabs debugging information. | |
53 | ||
54 | The -a option takes a new suboption, m (e.g., -alm) to expand macros in a | |
55 | listing. | |
56 | ||
57 | Added -MD option to print dependencies. | |
58 | ||
59 | Changes in 2.8: | |
60 | ||
61 | BeOS support added. | |
62 | ||
63 | MIPS16 support added. | |
64 | ||
65 | Motorola ColdFire 5200 support added (configure for m68k and use -m5200). | |
66 | ||
67 | Alpha/VMS support added. | |
68 | ||
69 | m68k options --base-size-default-16, --base-size-default-32, | |
70 | --disp-size-default-16, and --disp-size-default-32 added. | |
71 | ||
72 | The alignment directives now take an optional third argument, which is the | |
73 | maximum number of bytes to skip. If doing the alignment would require skipping | |
74 | more than the given number of bytes, the alignment is not done at all. | |
75 | ||
76 | The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. | |
77 | ||
78 | The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals | |
79 | in listings. | |
80 | ||
81 | Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the | |
82 | symbol is already defined. | |
83 | ||
84 | Changes in 2.7: | |
85 | ||
86 | The PowerPC assembler now allows the use of symbolic register names (r0, etc.) | |
87 | if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be | |
88 | used any time. PowerPC 860 move to/from SPR instructions have been added. | |
89 | ||
90 | Alpha Linux (ELF) support added. | |
91 | ||
92 | PowerPC ELF support added. | |
93 | ||
94 | m68k Linux (ELF) support added. | |
95 | ||
96 | i960 Hx/Jx support added. | |
97 | ||
98 | i386/PowerPC gnu-win32 support added. | |
99 | ||
100 | SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the | |
101 | default is to build COFF-only support. To get a set of tools that generate ELF | |
102 | (they'll understand both COFF and ELF), you must configure with | |
103 | target=i386-unknown-sco3.2v5elf. | |
104 | ||
105 | m88k-motorola-sysv3* support added. | |
106 | ||
107 | Changes in 2.6: | |
108 | ||
109 | Gas now directly supports macros, without requiring GASP. | |
110 | ||
111 | Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI | |
112 | mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri | |
113 | 0'' is seen; this can be convenient for inline assembler code. | |
114 | ||
115 | Added --defsym SYM=VALUE option. | |
116 | ||
117 | Added -mips4 support to MIPS assembler. | |
118 | ||
119 | Added PIC support to Solaris and SPARC SunOS 4 assembler. | |
120 | ||
121 | Changes in 2.4: | |
122 | ||
123 | Converted this directory to use an autoconf-generated configure script. | |
124 | ||
125 | ARM support, from Richard Earnshaw. | |
126 | ||
127 | Updated VMS support, from Pat Rankin, including considerably improved debugging | |
128 | support. | |
129 | ||
130 | Support for the control registers in the 68060. | |
131 | ||
132 | Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to | |
133 | provide for possible future gcc changes, for targets where gas provides some | |
134 | features not available in the native assembler. If the native assembler is | |
135 | used, it should become obvious pretty quickly what the problem is. | |
136 | ||
137 | Usage message is available with "--help". | |
138 | ||
139 | The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 | |
140 | also, but didn't get into the NEWS file.) | |
141 | ||
142 | Weak symbol support for a.out. | |
143 | ||
144 | A bug in the listing code which could cause an infinite loop has been fixed. | |
145 | Bugs in listings when generating a COFF object file have also been fixed. | |
146 | ||
147 | Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul | |
148 | Kranenburg. | |
149 | ||
150 | Improved Alpha support. Immediate constants can have a much larger range now. | |
151 | Support for the 21164 has been contributed by Digital. | |
152 | ||
153 | Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. | |
154 | ||
155 | Changes in 2.3: | |
156 | ||
157 | Mach i386 support, by David Mackenzie and Ken Raeburn. | |
158 | ||
159 | RS/6000 and PowerPC support by Ian Taylor. | |
160 | ||
161 | VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, | |
162 | based on mail received from various people. The `-h#' option should work again | |
163 | too. | |
164 | ||
165 | HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work | |
166 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special | |
167 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve | |
168 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu | |
169 | in the "dist" directory. | |
170 | ||
171 | Vax support in gas fixed for BSD, so it builds and seems to run a couple simple | |
172 | tests okay. I haven't put it through extensive testing. (GNU make is | |
173 | currently required for BSD 4.3 builds.) | |
174 | ||
175 | Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is | |
176 | based on code donated by CMU, which used an a.out-based format. I'm afraid the | |
177 | alpha-a.out support is pretty badly mangled, and much of it removed; making it | |
178 | work will require rewriting it as BFD support for the format anyways. | |
179 | ||
180 | Irix 5 support. | |
181 | ||
182 | The test suites have been fixed up a bit, so that they should work with a | |
183 | couple different versions of expect and dejagnu. | |
184 | ||
185 | Symbols' values are now handled internally as expressions, permitting more | |
186 | flexibility in evaluating them in some cases. Some details of relocation | |
187 | handling have also changed, and simple constant pool management has been added, | |
188 | to make the Alpha port easier. | |
189 | ||
190 | New option "--statistics" for printing out program run times. This is intended | |
191 | to be used with the gcc "-Q" option, which prints out times spent in various | |
192 | phases of compilation. (You should be able to get all of them printed out with | |
193 | "gcc -Q -Wa,--statistics", I think.) | |
194 | ||
195 | ---------------------------------------------------------------- | |
196 | ||
197 | Changes in 2.2: | |
198 | ||
199 | RS/6000 AIX and MIPS SGI Irix 5 support has been added. | |
200 | ||
201 | Configurations that are still in development (and therefore are convenient to | |
202 | have listed in configure.in) still get rejected without a minor change to | |
203 | gas/Makefile.in, so people not doing development work shouldn't get the | |
204 | impression that support for such configurations is actually believed to be | |
205 | reliable. | |
206 | ||
207 | The program name (usually "as") is printed when a fatal error message is | |
208 | displayed. This should prevent some confusion about the source of occasional | |
209 | messages about "internal errors". | |
210 | ||
211 | ELF support is falling into place. Support for the 386 should be working. | |
212 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. | |
213 | ||
214 | Symbol values are maintained as expressions instead of being immediately boiled | |
215 | down to add-symbol, sub-symbol, and constant. This permits slightly more | |
216 | complex calculations involving symbols whose values are not alreadey known. | |
217 | ||
218 | DBX-style debugging info ("stabs") is now supported for COFF formats. | |
219 | If any stabs directives are seen in the source, GAS will create two new | |
220 | sections: a ".stab" and a ".stabstr" section. The format of the .stab | |
221 | section is nearly identical to the a.out symbol format, and .stabstr is | |
222 | its string table. For this to be useful, you must have configured GCC | |
223 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB | |
224 | that can use the stab sections (4.11 or later). | |
225 | ||
226 | LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS | |
227 | support is in progress. | |
228 | ||
229 | ---------------------------------------------------------------- | |
230 | ||
231 | Changes in 2.1: | |
232 | ||
233 | Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been | |
234 | incorporated, but not well tested yet. | |
235 | ||
236 | Altered the opcode table split for m68k; it should require less VM to compile | |
237 | with gcc now. | |
238 | ||
239 | Some minor adjustments to add (Convergent Technologies') Miniframe support, | |
240 | suggested by Ronald Cole. | |
241 | ||
242 | HPPA support (running OSF only, not HPUX) has been contributed by Utah. This | |
243 | includes improved ELF support, which I've started adapting for SPARC Solaris | |
244 | 2.x. Integration isn't completely, so it probably won't work. | |
245 | ||
246 | HP9000/300 support, donated by HP, has been merged in. | |
247 | ||
248 | Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. | |
249 | ||
250 | Better error messages for unsupported configurations (e.g., hppa-hpux). | |
251 | ||
252 | Test suite framework is starting to become reasonable. | |
253 | ||
254 | ---------------------------------------------------------------- | |
255 | ||
256 | Changes in 2.0: | |
257 | ||
258 | Mostly bug fixes. | |
259 | ||
260 | Some more merging of BFD and ELF code, but ELF still doesn't work. | |
261 | ||
262 | ---------------------------------------------------------------- | |
263 | ||
264 | Changes in 1.94: | |
265 | ||
266 | BFD merge is partly done. Adventurous souls may try giving configure the | |
267 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format | |
268 | accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or | |
269 | "solaris". (ELF isn't really supported yet. It needs work. I've got some | |
270 | code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully | |
271 | merged yet.) | |
272 | ||
273 | The 68K opcode table has been split in half. It should now compile under gcc | |
274 | without consuming ridiculous amounts of memory. | |
275 | ||
276 | A couple data structures have been reduced in size. This should result in | |
277 | saving a little bit of space at runtime. | |
278 | ||
279 | Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF | |
280 | code provided ROSE format support, which I haven't merged in yet. (I can make | |
281 | it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4, | |
282 | supports a.out format. We don't have ECOFF support in just yet; it's coming. | |
283 | ||
284 | Support for the Hitachi H8/500 has been added. | |
285 | ||
286 | VMS host and target support should be working now, thanks chiefly to Eric | |
287 | Youngdale. | |
288 | ||
289 | ---------------------------------------------------------------- | |
290 | ||
291 | Changes in 1.93.01: | |
292 | ||
293 | For m68k, support for more processors has been added: 68040, CPU32, 68851. | |
294 | ||
295 | For i386, .align is now power-of-two; was number-of-bytes. | |
296 | ||
297 | For m68k, "%" is now accepted before register names. For COFF format, which | |
298 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" | |
299 | can be distinguished from the register. | |
300 | ||
301 | Last public release was 1.38. Lots of configuration changes since then, lots | |
302 | of new CPUs and formats, lots of bugs fixed. | |
303 | ||
304 | \f | |
305 | Local variables: | |
306 | fill-column: 79 | |
307 | End: |