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4d61cba9 KR |
1 | -*- text -*- |
2 | ||
be5fbc83 ILT |
3 | Changes in 2.10: |
4 | ||
115bb25d ILT |
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. | |
be5fbc83 | 11 | |
0e034c77 ILT |
12 | Changes in 2.9: |
13 | ||
14 | Texas Instruction c30 (tms320c30) support added. | |
15 | ||
ffd652c3 | 16 | The assembler now optimizes the exception frame information generated by egcs |
115bb25d | 17 | and gcc 2.8. The new --traditional-format option disables this optimization. |
ffd652c3 | 18 | |
be5fbc83 | 19 | Added --gstabs option to generate stabs debugging information. |
0e034c77 ILT |
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 | ||
3421c0cc | 26 | Changes in 2.8: |
972636ce | 27 | |
5cf4e55e FF |
28 | BeOS support added. |
29 | ||
c8f580ce ILT |
30 | MIPS16 support added. |
31 | ||
972636ce ILT |
32 | Motorola ColdFire 5200 support added (configure for m68k and use -m5200). |
33 | ||
c8f580ce ILT |
34 | Alpha/VMS support added. |
35 | ||
5cf4e55e FF |
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. | |
b4d51f3d | 47 | |
0e034c77 ILT |
48 | Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the |
49 | symbol is already defined. | |
50 | ||
3421c0cc | 51 | Changes in 2.7: |
e675c634 ILT |
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 | ||
be5fbc83 | 72 | m88k-motorola-sysv3* support added. |
e675c634 | 73 | |
3421c0cc | 74 | Changes in 2.6: |
7e047ac2 ILT |
75 | |
76 | Gas now directly supports macros, without requiring GASP. | |
77 | ||
e675c634 ILT |
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. | |
7e047ac2 ILT |
83 | |
84 | Added -mips4 support to MIPS assembler. | |
85 | ||
86 | Added PIC support to Solaris and SPARC SunOS 4 assembler. | |
87 | ||
3421c0cc | 88 | Changes in 2.4: |
4d61cba9 KR |
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 | ||
7e047ac2 ILT |
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 | ||
4d61cba9 KR |
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 | |
7e047ac2 | 115 | Kranenburg. |
4d61cba9 KR |
116 | |
117 | Improved Alpha support. Immediate constants can have a much larger range now. | |
7e047ac2 | 118 | Support for the 21164 has been contributed by Digital. |
4d61cba9 KR |
119 | |
120 | Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. | |
121 | ||
3421c0cc | 122 | Changes in 2.3: |
4d61cba9 KR |
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 | ||
3421c0cc | 164 | Changes in 2.2: |
4d61cba9 KR |
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 | ||
3421c0cc | 198 | Changes in 2.1: |
4d61cba9 KR |
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 | ||
3421c0cc | 223 | Changes in 2.0: |
4d61cba9 KR |
224 | |
225 | Mostly bug fixes. | |
226 | ||
227 | Some more merging of BFD and ELF code, but ELF still doesn't work. | |
228 | ||
229 | ---------------------------------------------------------------- | |
230 | ||
3421c0cc | 231 | Changes in 1.94: |
4d61cba9 KR |
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 | ||
3421c0cc | 258 | Changes in 1.93.01: |
4d61cba9 KR |
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: |