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4d61cba9 KR |
1 | -*- text -*- |
2 | ||
be5fbc83 ILT |
3 | Changes in 2.10: |
4 | ||
5 | Greatly improved instruction operand checking for i386. | |
6 | ||
0e034c77 ILT |
7 | Changes in 2.9: |
8 | ||
9 | Texas Instruction c30 (tms320c30) support added. | |
10 | ||
ffd652c3 ILT |
11 | The assembler now optimizes the exception frame information generated by egcs |
12 | and gcc 2.8. The new --traditional-format disables this optimization. | |
13 | ||
be5fbc83 | 14 | Added --gstabs option to generate stabs debugging information. |
0e034c77 ILT |
15 | |
16 | The -a option takes a new suboption, m (e.g., -alm) to expand macros in a | |
17 | listing. | |
18 | ||
19 | Added -MD option to print dependencies. | |
20 | ||
3421c0cc | 21 | Changes in 2.8: |
972636ce | 22 | |
5cf4e55e FF |
23 | BeOS support added. |
24 | ||
c8f580ce ILT |
25 | MIPS16 support added. |
26 | ||
972636ce ILT |
27 | Motorola ColdFire 5200 support added (configure for m68k and use -m5200). |
28 | ||
c8f580ce ILT |
29 | Alpha/VMS support added. |
30 | ||
5cf4e55e FF |
31 | m68k options --base-size-default-16, --base-size-default-32, |
32 | --disp-size-default-16, and --disp-size-default-32 added. | |
33 | ||
34 | The alignment directives now take an optional third argument, which is the | |
35 | maximum number of bytes to skip. If doing the alignment would require skipping | |
36 | more than the given number of bytes, the alignment is not done at all. | |
37 | ||
38 | The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. | |
39 | ||
40 | The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals | |
41 | in listings. | |
b4d51f3d | 42 | |
0e034c77 ILT |
43 | Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the |
44 | symbol is already defined. | |
45 | ||
3421c0cc | 46 | Changes in 2.7: |
e675c634 ILT |
47 | |
48 | The PowerPC assembler now allows the use of symbolic register names (r0, etc.) | |
49 | if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be | |
50 | used any time. PowerPC 860 move to/from SPR instructions have been added. | |
51 | ||
52 | Alpha Linux (ELF) support added. | |
53 | ||
54 | PowerPC ELF support added. | |
55 | ||
56 | m68k Linux (ELF) support added. | |
57 | ||
58 | i960 Hx/Jx support added. | |
59 | ||
60 | i386/PowerPC gnu-win32 support added. | |
61 | ||
62 | SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the | |
63 | default is to build COFF-only support. To get a set of tools that generate ELF | |
64 | (they'll understand both COFF and ELF), you must configure with | |
65 | target=i386-unknown-sco3.2v5elf. | |
66 | ||
be5fbc83 | 67 | m88k-motorola-sysv3* support added. |
e675c634 | 68 | |
3421c0cc | 69 | Changes in 2.6: |
7e047ac2 ILT |
70 | |
71 | Gas now directly supports macros, without requiring GASP. | |
72 | ||
e675c634 ILT |
73 | Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI |
74 | mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri | |
75 | 0'' is seen; this can be convenient for inline assembler code. | |
76 | ||
77 | Added --defsym SYM=VALUE option. | |
7e047ac2 ILT |
78 | |
79 | Added -mips4 support to MIPS assembler. | |
80 | ||
81 | Added PIC support to Solaris and SPARC SunOS 4 assembler. | |
82 | ||
3421c0cc | 83 | Changes in 2.4: |
4d61cba9 KR |
84 | |
85 | Converted this directory to use an autoconf-generated configure script. | |
86 | ||
87 | ARM support, from Richard Earnshaw. | |
88 | ||
89 | Updated VMS support, from Pat Rankin, including considerably improved debugging | |
90 | support. | |
91 | ||
92 | Support for the control registers in the 68060. | |
93 | ||
94 | Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to | |
95 | provide for possible future gcc changes, for targets where gas provides some | |
96 | features not available in the native assembler. If the native assembler is | |
97 | used, it should become obvious pretty quickly what the problem is. | |
98 | ||
99 | Usage message is available with "--help". | |
100 | ||
7e047ac2 ILT |
101 | The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 |
102 | also, but didn't get into the NEWS file.) | |
103 | ||
4d61cba9 KR |
104 | Weak symbol support for a.out. |
105 | ||
106 | A bug in the listing code which could cause an infinite loop has been fixed. | |
107 | Bugs in listings when generating a COFF object file have also been fixed. | |
108 | ||
109 | Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul | |
7e047ac2 | 110 | Kranenburg. |
4d61cba9 KR |
111 | |
112 | Improved Alpha support. Immediate constants can have a much larger range now. | |
7e047ac2 | 113 | Support for the 21164 has been contributed by Digital. |
4d61cba9 KR |
114 | |
115 | Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. | |
116 | ||
3421c0cc | 117 | Changes in 2.3: |
4d61cba9 KR |
118 | |
119 | Mach i386 support, by David Mackenzie and Ken Raeburn. | |
120 | ||
121 | RS/6000 and PowerPC support by Ian Taylor. | |
122 | ||
123 | VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, | |
124 | based on mail received from various people. The `-h#' option should work again | |
125 | too. | |
126 | ||
127 | HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work | |
128 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special | |
129 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve | |
130 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu | |
131 | in the "dist" directory. | |
132 | ||
133 | Vax support in gas fixed for BSD, so it builds and seems to run a couple simple | |
134 | tests okay. I haven't put it through extensive testing. (GNU make is | |
135 | currently required for BSD 4.3 builds.) | |
136 | ||
137 | Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is | |
138 | based on code donated by CMU, which used an a.out-based format. I'm afraid the | |
139 | alpha-a.out support is pretty badly mangled, and much of it removed; making it | |
140 | work will require rewriting it as BFD support for the format anyways. | |
141 | ||
142 | Irix 5 support. | |
143 | ||
144 | The test suites have been fixed up a bit, so that they should work with a | |
145 | couple different versions of expect and dejagnu. | |
146 | ||
147 | Symbols' values are now handled internally as expressions, permitting more | |
148 | flexibility in evaluating them in some cases. Some details of relocation | |
149 | handling have also changed, and simple constant pool management has been added, | |
150 | to make the Alpha port easier. | |
151 | ||
152 | New option "--statistics" for printing out program run times. This is intended | |
153 | to be used with the gcc "-Q" option, which prints out times spent in various | |
154 | phases of compilation. (You should be able to get all of them printed out with | |
155 | "gcc -Q -Wa,--statistics", I think.) | |
156 | ||
157 | ---------------------------------------------------------------- | |
158 | ||
3421c0cc | 159 | Changes in 2.2: |
4d61cba9 KR |
160 | |
161 | RS/6000 AIX and MIPS SGI Irix 5 support has been added. | |
162 | ||
163 | Configurations that are still in development (and therefore are convenient to | |
164 | have listed in configure.in) still get rejected without a minor change to | |
165 | gas/Makefile.in, so people not doing development work shouldn't get the | |
166 | impression that support for such configurations is actually believed to be | |
167 | reliable. | |
168 | ||
169 | The program name (usually "as") is printed when a fatal error message is | |
170 | displayed. This should prevent some confusion about the source of occasional | |
171 | messages about "internal errors". | |
172 | ||
173 | ELF support is falling into place. Support for the 386 should be working. | |
174 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. | |
175 | ||
176 | Symbol values are maintained as expressions instead of being immediately boiled | |
177 | down to add-symbol, sub-symbol, and constant. This permits slightly more | |
178 | complex calculations involving symbols whose values are not alreadey known. | |
179 | ||
180 | DBX-style debugging info ("stabs") is now supported for COFF formats. | |
181 | If any stabs directives are seen in the source, GAS will create two new | |
182 | sections: a ".stab" and a ".stabstr" section. The format of the .stab | |
183 | section is nearly identical to the a.out symbol format, and .stabstr is | |
184 | its string table. For this to be useful, you must have configured GCC | |
185 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB | |
186 | that can use the stab sections (4.11 or later). | |
187 | ||
188 | LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS | |
189 | support is in progress. | |
190 | ||
191 | ---------------------------------------------------------------- | |
192 | ||
3421c0cc | 193 | Changes in 2.1: |
4d61cba9 KR |
194 | |
195 | Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been | |
196 | incorporated, but not well tested yet. | |
197 | ||
198 | Altered the opcode table split for m68k; it should require less VM to compile | |
199 | with gcc now. | |
200 | ||
201 | Some minor adjustments to add (Convergent Technologies') Miniframe support, | |
202 | suggested by Ronald Cole. | |
203 | ||
204 | HPPA support (running OSF only, not HPUX) has been contributed by Utah. This | |
205 | includes improved ELF support, which I've started adapting for SPARC Solaris | |
206 | 2.x. Integration isn't completely, so it probably won't work. | |
207 | ||
208 | HP9000/300 support, donated by HP, has been merged in. | |
209 | ||
210 | Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. | |
211 | ||
212 | Better error messages for unsupported configurations (e.g., hppa-hpux). | |
213 | ||
214 | Test suite framework is starting to become reasonable. | |
215 | ||
216 | ---------------------------------------------------------------- | |
217 | ||
3421c0cc | 218 | Changes in 2.0: |
4d61cba9 KR |
219 | |
220 | Mostly bug fixes. | |
221 | ||
222 | Some more merging of BFD and ELF code, but ELF still doesn't work. | |
223 | ||
224 | ---------------------------------------------------------------- | |
225 | ||
3421c0cc | 226 | Changes in 1.94: |
4d61cba9 KR |
227 | |
228 | BFD merge is partly done. Adventurous souls may try giving configure the | |
229 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format | |
230 | accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or | |
231 | "solaris". (ELF isn't really supported yet. It needs work. I've got some | |
232 | code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully | |
233 | merged yet.) | |
234 | ||
235 | The 68K opcode table has been split in half. It should now compile under gcc | |
236 | without consuming ridiculous amounts of memory. | |
237 | ||
238 | A couple data structures have been reduced in size. This should result in | |
239 | saving a little bit of space at runtime. | |
240 | ||
241 | Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF | |
242 | code provided ROSE format support, which I haven't merged in yet. (I can make | |
243 | it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4, | |
244 | supports a.out format. We don't have ECOFF support in just yet; it's coming. | |
245 | ||
246 | Support for the Hitachi H8/500 has been added. | |
247 | ||
248 | VMS host and target support should be working now, thanks chiefly to Eric | |
249 | Youngdale. | |
250 | ||
251 | ---------------------------------------------------------------- | |
252 | ||
3421c0cc | 253 | Changes in 1.93.01: |
4d61cba9 KR |
254 | |
255 | For m68k, support for more processors has been added: 68040, CPU32, 68851. | |
256 | ||
257 | For i386, .align is now power-of-two; was number-of-bytes. | |
258 | ||
259 | For m68k, "%" is now accepted before register names. For COFF format, which | |
260 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" | |
261 | can be distinguished from the register. | |
262 | ||
263 | Last public release was 1.38. Lots of configuration changes since then, lots | |
264 | of new CPUs and formats, lots of bugs fixed. | |
265 | ||
266 | \f | |
267 | Local variables: | |
268 | fill-column: 79 | |
269 | End: |