Commit | Line | Data |
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252b5132 | 1 | -*- text -*- |
3b16e843 NC |
2 | Support for the OpenRISC 32-bit embedded processor by OpenCores. |
3 | ||
03b1477f RE |
4 | The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for |
5 | specifying the target instruction set. The old method of specifying the | |
6 | target processor has been deprecated, but is still accepted for | |
7 | compatibility. | |
8 | ||
9 | Support for the VFP floating-point instruction set has been added to | |
10 | the ARM assembler. | |
252b5132 | 11 | |
7e005732 NC |
12 | New psuedo op: .incbin to include a set of binary data at a given point |
13 | in the assembly. Contributed by Anders Norlander. | |
14 | ||
ec68c924 EC |
15 | The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated |
16 | but still works for compatability. | |
17 | ||
63486801 L |
18 | The MIPS assembler no longer issues a warning by default when it |
19 | generates a nop instruction from a macro. The new command line option | |
20 | -n will turn on the warning. | |
21 | ||
2dac7317 JW |
22 | Changes in 2.11: |
23 | ||
a167610d JH |
24 | x86 gas now supports the full Pentium4 instruction set. |
25 | ||
c0d8940f JH |
26 | Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs. |
27 | ||
df86943d NC |
28 | Support for Motorola 68HC11 and 68HC12. |
29 | ||
39bec121 TW |
30 | Support for Texas Instruments TMS320C54x (tic54x). |
31 | ||
2dac7317 JW |
32 | Support for IA-64. |
33 | ||
22b36938 JE |
34 | Support for i860, by Jason Eckhardt. |
35 | ||
5bcac8a4 HPN |
36 | Support for CRIS (Axis Communications ETRAX series). |
37 | ||
a38cf1db AM |
38 | x86 gas has a new .arch pseudo op to specify the target CPU architecture. |
39 | ||
40 | x86 gas -q command line option quietens warnings about register size changes | |
41 | due to suffix, indirect jmp/call without `*', stand-alone prefixes, and | |
42 | translating various deprecated floating point instructions. | |
43 | ||
252b5132 RH |
44 | Changes in 2.10: |
45 | ||
d14442f4 PB |
46 | Support for the ARM msr instruction was changed to only allow an immediate |
47 | operand when altering the flags field. | |
48 | ||
adde6300 AM |
49 | Support for ATMEL AVR. |
50 | ||
b5ebe70e AM |
51 | Support for IBM 370 ELF. Somewhat experimental. |
52 | ||
3fd9f047 TW |
53 | Support for numbers with suffixes. |
54 | ||
6a6987a9 TW |
55 | Added support for breaking to the end of repeat loops. |
56 | ||
57 | Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL). | |
58 | ||
3fd9f047 TW |
59 | New .elseif pseudo-op added. |
60 | ||
1f776aa5 GK |
61 | New --fatal-warnings option. |
62 | ||
041dd5a9 | 63 | picoJava architecture support added. |
252b5132 | 64 | |
041dd5a9 ILT |
65 | Motorola MCore 210 processor support added. |
66 | ||
67 | A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386 | |
68 | assembly programs with intel syntax. | |
252b5132 RH |
69 | |
70 | New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code. | |
71 | ||
041dd5a9 ILT |
72 | Added -gdwarf2 option to generate DWARF 2 debugging information. |
73 | ||
252b5132 RH |
74 | Full 16-bit mode support for i386. |
75 | ||
76 | Greatly improved instruction operand checking for i386. This change will | |
77 | produce errors or warnings on incorrect assembly code that previous versions of | |
78 | gas accepted. If you get unexpected messages from code that worked with older | |
79 | versions of gas, please double check the code before reporting a bug. | |
80 | ||
81 | Weak symbol support added for COFF targets. | |
82 | ||
83 | Mitsubishi D30V support added. | |
84 | ||
85 | Texas Instruments c80 (tms320c80) support added. | |
86 | ||
bedf545c ILT |
87 | i960 ELF support added. |
88 | ||
a057431b PB |
89 | ARM ELF support added. |
90 | ||
252b5132 RH |
91 | Changes in 2.9: |
92 | ||
93 | Texas Instruments c30 (tms320c30) support added. | |
94 | ||
95 | The assembler now optimizes the exception frame information generated by egcs | |
96 | and gcc 2.8. The new --traditional-format option disables this optimization. | |
97 | ||
98 | Added --gstabs option to generate stabs debugging information. | |
99 | ||
100 | The -a option takes a new suboption, m (e.g., -alm) to expand macros in a | |
101 | listing. | |
102 | ||
103 | Added -MD option to print dependencies. | |
104 | ||
105 | Changes in 2.8: | |
106 | ||
107 | BeOS support added. | |
108 | ||
109 | MIPS16 support added. | |
110 | ||
111 | Motorola ColdFire 5200 support added (configure for m68k and use -m5200). | |
112 | ||
113 | Alpha/VMS support added. | |
114 | ||
115 | m68k options --base-size-default-16, --base-size-default-32, | |
116 | --disp-size-default-16, and --disp-size-default-32 added. | |
117 | ||
118 | The alignment directives now take an optional third argument, which is the | |
119 | maximum number of bytes to skip. If doing the alignment would require skipping | |
120 | more than the given number of bytes, the alignment is not done at all. | |
121 | ||
122 | The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. | |
123 | ||
124 | The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals | |
125 | in listings. | |
126 | ||
127 | Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the | |
128 | symbol is already defined. | |
129 | ||
130 | Changes in 2.7: | |
131 | ||
132 | The PowerPC assembler now allows the use of symbolic register names (r0, etc.) | |
133 | if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be | |
134 | used any time. PowerPC 860 move to/from SPR instructions have been added. | |
135 | ||
136 | Alpha Linux (ELF) support added. | |
137 | ||
138 | PowerPC ELF support added. | |
139 | ||
140 | m68k Linux (ELF) support added. | |
141 | ||
142 | i960 Hx/Jx support added. | |
143 | ||
144 | i386/PowerPC gnu-win32 support added. | |
145 | ||
146 | SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the | |
147 | default is to build COFF-only support. To get a set of tools that generate ELF | |
148 | (they'll understand both COFF and ELF), you must configure with | |
149 | target=i386-unknown-sco3.2v5elf. | |
150 | ||
151 | m88k-motorola-sysv3* support added. | |
152 | ||
153 | Changes in 2.6: | |
154 | ||
155 | Gas now directly supports macros, without requiring GASP. | |
156 | ||
157 | Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI | |
158 | mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri | |
159 | 0'' is seen; this can be convenient for inline assembler code. | |
160 | ||
161 | Added --defsym SYM=VALUE option. | |
162 | ||
163 | Added -mips4 support to MIPS assembler. | |
164 | ||
165 | Added PIC support to Solaris and SPARC SunOS 4 assembler. | |
166 | ||
167 | Changes in 2.4: | |
168 | ||
169 | Converted this directory to use an autoconf-generated configure script. | |
170 | ||
171 | ARM support, from Richard Earnshaw. | |
172 | ||
173 | Updated VMS support, from Pat Rankin, including considerably improved debugging | |
174 | support. | |
175 | ||
176 | Support for the control registers in the 68060. | |
177 | ||
178 | Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to | |
179 | provide for possible future gcc changes, for targets where gas provides some | |
180 | features not available in the native assembler. If the native assembler is | |
181 | used, it should become obvious pretty quickly what the problem is. | |
182 | ||
183 | Usage message is available with "--help". | |
184 | ||
185 | The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 | |
186 | also, but didn't get into the NEWS file.) | |
187 | ||
188 | Weak symbol support for a.out. | |
189 | ||
190 | A bug in the listing code which could cause an infinite loop has been fixed. | |
191 | Bugs in listings when generating a COFF object file have also been fixed. | |
192 | ||
193 | Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul | |
194 | Kranenburg. | |
195 | ||
196 | Improved Alpha support. Immediate constants can have a much larger range now. | |
197 | Support for the 21164 has been contributed by Digital. | |
198 | ||
199 | Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. | |
200 | ||
201 | Changes in 2.3: | |
202 | ||
203 | Mach i386 support, by David Mackenzie and Ken Raeburn. | |
204 | ||
205 | RS/6000 and PowerPC support by Ian Taylor. | |
206 | ||
207 | VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, | |
208 | based on mail received from various people. The `-h#' option should work again | |
209 | too. | |
210 | ||
211 | HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work | |
212 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special | |
213 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve | |
214 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu | |
215 | in the "dist" directory. | |
216 | ||
217 | Vax support in gas fixed for BSD, so it builds and seems to run a couple simple | |
218 | tests okay. I haven't put it through extensive testing. (GNU make is | |
219 | currently required for BSD 4.3 builds.) | |
220 | ||
221 | Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is | |
222 | based on code donated by CMU, which used an a.out-based format. I'm afraid the | |
223 | alpha-a.out support is pretty badly mangled, and much of it removed; making it | |
224 | work will require rewriting it as BFD support for the format anyways. | |
225 | ||
226 | Irix 5 support. | |
227 | ||
228 | The test suites have been fixed up a bit, so that they should work with a | |
229 | couple different versions of expect and dejagnu. | |
230 | ||
231 | Symbols' values are now handled internally as expressions, permitting more | |
232 | flexibility in evaluating them in some cases. Some details of relocation | |
233 | handling have also changed, and simple constant pool management has been added, | |
234 | to make the Alpha port easier. | |
235 | ||
236 | New option "--statistics" for printing out program run times. This is intended | |
237 | to be used with the gcc "-Q" option, which prints out times spent in various | |
238 | phases of compilation. (You should be able to get all of them printed out with | |
239 | "gcc -Q -Wa,--statistics", I think.) | |
240 | ||
241 | ---------------------------------------------------------------- | |
242 | ||
243 | Changes in 2.2: | |
244 | ||
245 | RS/6000 AIX and MIPS SGI Irix 5 support has been added. | |
246 | ||
247 | Configurations that are still in development (and therefore are convenient to | |
248 | have listed in configure.in) still get rejected without a minor change to | |
249 | gas/Makefile.in, so people not doing development work shouldn't get the | |
250 | impression that support for such configurations is actually believed to be | |
251 | reliable. | |
252 | ||
253 | The program name (usually "as") is printed when a fatal error message is | |
254 | displayed. This should prevent some confusion about the source of occasional | |
255 | messages about "internal errors". | |
256 | ||
257 | ELF support is falling into place. Support for the 386 should be working. | |
258 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. | |
259 | ||
260 | Symbol values are maintained as expressions instead of being immediately boiled | |
261 | down to add-symbol, sub-symbol, and constant. This permits slightly more | |
262 | complex calculations involving symbols whose values are not alreadey known. | |
263 | ||
264 | DBX-style debugging info ("stabs") is now supported for COFF formats. | |
265 | If any stabs directives are seen in the source, GAS will create two new | |
266 | sections: a ".stab" and a ".stabstr" section. The format of the .stab | |
267 | section is nearly identical to the a.out symbol format, and .stabstr is | |
268 | its string table. For this to be useful, you must have configured GCC | |
269 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB | |
270 | that can use the stab sections (4.11 or later). | |
271 | ||
272 | LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS | |
273 | support is in progress. | |
274 | ||
275 | ---------------------------------------------------------------- | |
276 | ||
277 | Changes in 2.1: | |
278 | ||
279 | Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been | |
280 | incorporated, but not well tested yet. | |
281 | ||
282 | Altered the opcode table split for m68k; it should require less VM to compile | |
283 | with gcc now. | |
284 | ||
285 | Some minor adjustments to add (Convergent Technologies') Miniframe support, | |
286 | suggested by Ronald Cole. | |
287 | ||
288 | HPPA support (running OSF only, not HPUX) has been contributed by Utah. This | |
289 | includes improved ELF support, which I've started adapting for SPARC Solaris | |
290 | 2.x. Integration isn't completely, so it probably won't work. | |
291 | ||
292 | HP9000/300 support, donated by HP, has been merged in. | |
293 | ||
294 | Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. | |
295 | ||
296 | Better error messages for unsupported configurations (e.g., hppa-hpux). | |
297 | ||
298 | Test suite framework is starting to become reasonable. | |
299 | ||
300 | ---------------------------------------------------------------- | |
301 | ||
302 | Changes in 2.0: | |
303 | ||
304 | Mostly bug fixes. | |
305 | ||
306 | Some more merging of BFD and ELF code, but ELF still doesn't work. | |
307 | ||
308 | ---------------------------------------------------------------- | |
309 | ||
310 | Changes in 1.94: | |
311 | ||
312 | BFD merge is partly done. Adventurous souls may try giving configure the | |
313 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format | |
314 | accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or | |
315 | "solaris". (ELF isn't really supported yet. It needs work. I've got some | |
316 | code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully | |
317 | merged yet.) | |
318 | ||
319 | The 68K opcode table has been split in half. It should now compile under gcc | |
320 | without consuming ridiculous amounts of memory. | |
321 | ||
322 | A couple data structures have been reduced in size. This should result in | |
323 | saving a little bit of space at runtime. | |
324 | ||
325 | Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF | |
326 | code provided ROSE format support, which I haven't merged in yet. (I can make | |
327 | it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4, | |
328 | supports a.out format. We don't have ECOFF support in just yet; it's coming. | |
329 | ||
330 | Support for the Hitachi H8/500 has been added. | |
331 | ||
332 | VMS host and target support should be working now, thanks chiefly to Eric | |
333 | Youngdale. | |
334 | ||
335 | ---------------------------------------------------------------- | |
336 | ||
337 | Changes in 1.93.01: | |
338 | ||
339 | For m68k, support for more processors has been added: 68040, CPU32, 68851. | |
340 | ||
341 | For i386, .align is now power-of-two; was number-of-bytes. | |
342 | ||
343 | For m68k, "%" is now accepted before register names. For COFF format, which | |
344 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" | |
345 | can be distinguished from the register. | |
346 | ||
347 | Last public release was 1.38. Lots of configuration changes since then, lots | |
348 | of new CPUs and formats, lots of bugs fixed. | |
349 | ||
350 | \f | |
351 | Local variables: | |
352 | fill-column: 79 | |
353 | End: |