Commit | Line | Data |
---|---|---|
252b5132 | 1 | -*- text -*- |
96a84ea3 | 2 | |
b1766e7c NC |
3 | * Added a .nop directive to generate a single no-op instruction in a target |
4 | neutral manner. This instruction does have an effect on DWARF line number | |
5 | generation, if that is active. | |
6 | ||
a0522545 ML |
7 | * Removed --reduce-memory-overheads and --hash-size as gas now |
8 | uses hash tables that can be expand and shrink automatically. | |
9 | ||
789198ca L |
10 | * Add {disp16} pseudo prefix to x86 assembler. |
11 | ||
260cd341 LC |
12 | * Add support for Intel AMX instructions. |
13 | ||
939b95c7 L |
14 | * Configure with --enable-x86-used-note by default for Linux/x86. |
15 | ||
b115b9fd NC |
16 | Changes in 2.35: |
17 | ||
bbd19b19 L |
18 | * X86 NaCl target support is removed. |
19 | ||
6914be53 L |
20 | * Extend .symver directive to update visibility of the original symbol |
21 | and assign one original symbol to different versioned symbols. | |
22 | ||
6e0e8b45 L |
23 | * Add support for Intel SERIALIZE and TSXLDTRK instructions. |
24 | ||
9e8f1c90 L |
25 | * Add -mlfence-after-load=, -mlfence-before-indirect-branch= and |
26 | -mlfence-before-ret= options to x86 assembler to help mitigate | |
27 | CVE-2020-0551. | |
28 | ||
5496f3c6 NC |
29 | * Add --gdwarf-5 option to the assembler to generate DWARF 5 debug output |
30 | (if such output is being generated). Added the ability to generate | |
31 | version 5 .debug_line sections. | |
32 | ||
251dae91 TC |
33 | * Add -mbig-obj support to i386 MingW targets. |
34 | ||
ae774686 NC |
35 | Changes in 2.34: |
36 | ||
5eb617a7 L |
37 | * Add -malign-branch-boundary=NUM, -malign-branch=TYPE[+TYPE...], |
38 | -malign-branch-prefix-size=NUM and -mbranches-within-32B-boundaries | |
39 | options to x86 assembler to align branches within a fixed boundary | |
40 | with segment prefixes or NOPs. | |
41 | ||
6655dba2 SB |
42 | * Add support for Zilog eZ80 and Zilog Z180 CPUs. |
43 | ||
44 | * Add support for z80-elf target. | |
45 | ||
46 | * Add support for relocation of each byte or word of multibyte value to Z80 | |
47 | targets (just use right shift to 0, 8, 16, or 24 bits or AND operation | |
48 | with 0xff/0xffff mask): ld a, label >> 16 \ ld hl, label & 0xffff | |
49 | ||
50 | * Add SDCC support for Z80 targets. | |
51 | ||
60391a25 PB |
52 | Changes in 2.33: |
53 | ||
7738ddb4 MM |
54 | * Add support for the Arm Scalable Vector Extension version 2 (SVE2) |
55 | instructions. | |
56 | ||
57 | * Add support for the Arm Transactional Memory Extension (TME) | |
58 | instructions. | |
59 | ||
514bbb0f AV |
60 | * Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE) |
61 | instructions. | |
62 | ||
b20d3859 BW |
63 | * For MIPS, Add -m[no-]fix-loongson3-llsc option to fix (or not) Loongson3 |
64 | LLSC Errata. Add a --enable-mips-fix-loongson3-llsc=[yes|no] configure | |
65 | time option to set the default behavior. Set the default if the configure | |
66 | option is not used to "no". | |
6f2117ba | 67 | |
546053ac DZ |
68 | * Add support for the Arm Cortex-A76AE, Cortex-A77 and Cortex-M35P |
69 | processors. | |
70 | ||
71 | * Add support for the AArch64 Cortex-A34, Cortex-A65, Cortex-A65AE, | |
72 | Cortex-A76AE, and Cortex-A77 processors. | |
73 | ||
b20d3859 BW |
74 | * Add .float16 directive for both Arm and AArch64 to allow encoding of 16-bit |
75 | floating point literals. Add .float16_format directive and | |
76 | -mfp16-format=[ieee|alternative] option for Arm to control the format of the | |
77 | encoding. | |
78 | ||
66f8b2cb AB |
79 | * Add --gdwarf-cie-version command line flag. This allows control over which |
80 | version of DWARF CIE the assembler creates. | |
81 | ||
f974f26c NC |
82 | Changes in 2.32: |
83 | ||
03751133 L |
84 | * Add -mvexwig=[0|1] option to x86 assembler to control encoding of |
85 | VEX.W-ignored (WIG) VEX instructions. | |
86 | ||
b4a3a7b4 L |
87 | * Add -mx86-used-note=[yes|no] option to generate (or not) x86 GNU property |
88 | notes. Add a --enable-x86-used-note configure time option to set the | |
89 | default behavior. Set the default if the configure option is not used | |
90 | to "no". | |
91 | ||
a693765e CX |
92 | * Add support for the MIPS Loongson EXTensions R2 (EXT2) instructions. |
93 | ||
bdc6c06e CX |
94 | * Add support for the MIPS Loongson EXTensions (EXT) instructions. |
95 | ||
716c08de CX |
96 | * Add support for the MIPS Loongson Content Address Memory (CAM) ASE. |
97 | ||
b8891f8d AJ |
98 | * Add support for the C-SKY processor series. |
99 | ||
8095d2f7 CX |
100 | * Add support for the MIPS Loongson MultiMedia extensions Instructions (MMI) |
101 | ASE. | |
102 | ||
719d8288 NC |
103 | Changes in 2.31: |
104 | ||
fc6141f0 NC |
105 | * The ADR and ADRL pseudo-instructions supported by the ARM assembler |
106 | now only set the bottom bit of the address of thumb function symbols | |
107 | if the -mthumb-interwork command line option is active. | |
108 | ||
6f20c942 FS |
109 | * Add support for the MIPS Global INValidate (GINV) ASE. |
110 | ||
730c3174 SE |
111 | * Add support for the MIPS Cyclic Redudancy Check (CRC) ASE. |
112 | ||
7b4ae824 JD |
113 | * Add support for the Freescale S12Z architecture. |
114 | ||
0df8ad28 NC |
115 | * Add --generate-missing-build-notes=[yes|no] option to create (or not) GNU |
116 | Build Attribute notes if none are present in the input sources. Add a | |
117 | --enable-generate-build-notes=[yes|no] configure time option to set the | |
118 | default behaviour. Set the default if the configure option is not used | |
119 | to "no". | |
120 | ||
bd5dea88 L |
121 | * Remove -mold-gcc command-line option for x86 targets. |
122 | ||
b6f8c7c4 L |
123 | * Add -O[2|s] command-line options to x86 assembler to enable alternate |
124 | shorter instruction encoding. | |
125 | ||
8f065d3b | 126 | * Add support for .nops directive. It is currently supported only for |
62a02d25 L |
127 | x86 targets. |
128 | ||
9176ac5b NC |
129 | Changes in 2.30: |
130 | ||
ba8826a8 AO |
131 | * Add support for loaction views in DWARF debug line information. |
132 | ||
55a09eb6 TG |
133 | Changes in 2.29: |
134 | ||
a91e1603 L |
135 | * Add support for ELF SHF_GNU_MBIND. |
136 | ||
f96bd6c2 PC |
137 | * Add support for the WebAssembly file format and wasm32 ELF conversion. |
138 | ||
7e0de605 | 139 | * PowerPC gas now checks that the correct register class is used in |
ece5dcc1 AM |
140 | instructions. For instance, "addi %f4,%cr3,%r31" warns three times |
141 | that the registers are invalid. | |
7e0de605 | 142 | |
93f11b16 DD |
143 | * Add support for the Texas Instruments PRU processor. |
144 | ||
0cda1e19 TP |
145 | * Support for the ARMv8-R architecture and Cortex-R52 processor has been |
146 | added to the ARM port. | |
ced40572 | 147 | |
9703a4ef TG |
148 | Changes in 2.28: |
149 | ||
e23eba97 NC |
150 | * Add support for the RISC-V architecture. |
151 | ||
b19ea8d2 | 152 | * Add support for the ARM Cortex-M23 and Cortex-M33 processors. |
ce1b0a45 | 153 | |
96a84ea3 TG |
154 | Changes in 2.27: |
155 | ||
4e3e1fdf L |
156 | * Default to --enable-compressed-debug-sections=gas for Linux/x86 targets. |
157 | ||
2edb36e7 NC |
158 | * Add --no-pad-sections to stop the assembler from padding the end of output |
159 | sections up to their alignment boundary. | |
160 | ||
15afaa63 TP |
161 | * Support for the ARMv8-M architecture has been added to the ARM port. Support |
162 | for the ARMv8-M Security and DSP Extensions has also been added to the ARM | |
163 | port. | |
164 | ||
f36e33da CZ |
165 | * ARC backend accepts .extInstruction, .extCondCode, .extAuxRegister, and |
166 | .extCoreRegister pseudo-ops that allow an user to define custom | |
167 | instructions, conditional codes, auxiliary and core registers. | |
168 | ||
b8871f35 L |
169 | * Add a configure option --enable-elf-stt-common to decide whether ELF |
170 | assembler should generate common symbols with the STT_COMMON type by | |
171 | default. Default to no. | |
172 | ||
a05a5b64 | 173 | * New command-line option --elf-stt-common= for ELF targets to control |
b8871f35 L |
174 | whether to generate common symbols with the STT_COMMON type. |
175 | ||
9fb71ee4 NC |
176 | * Add ability to set section flags and types via numeric values for ELF |
177 | based targets. | |
81c23f82 | 178 | |
0cb4071e L |
179 | * Add a configure option --enable-x86-relax-relocations to decide whether |
180 | x86 assembler should generate relax relocations by default. Default to | |
181 | yes, except for x86 Solaris targets older than Solaris 12. | |
182 | ||
a05a5b64 | 183 | * New command-line option -mrelax-relocations= for x86 target to control |
0cb4071e L |
184 | whether to generate relax relocations. |
185 | ||
a05a5b64 | 186 | * New command-line option -mfence-as-lock-add=yes for x86 target to encode |
9d3fc4e1 L |
187 | lfence, mfence and sfence as "lock addl $0x0, (%[re]sp)". |
188 | ||
4670103e CZ |
189 | * Add assembly-time relaxation option for ARC cpus. |
190 | ||
9004b6bd AB |
191 | * Add --with-cpu=TYPE configure option for ARC gas. This allows the default |
192 | cpu type to be adjusted at configure time. | |
193 | ||
7feec526 TG |
194 | Changes in 2.26: |
195 | ||
edeefb67 L |
196 | * Add a configure option --enable-compressed-debug-sections={all,gas} to |
197 | decide whether DWARF debug sections should be compressed by default. | |
e12fe555 | 198 | |
886a2506 NC |
199 | * Add support for the ARC EM/HS, and ARC600/700 architectures. Remove |
200 | assembler support for Argonaut RISC architectures. | |
201 | ||
d02603dc NC |
202 | * Symbol and label names can now be enclosed in double quotes (") which allows |
203 | them to contain characters that are not part of valid symbol names in high | |
204 | level languages. | |
205 | ||
f33026a9 MW |
206 | * Added the correctly spelled -march=armv6kz, for ARMv6KZ support. The |
207 | previous spelling, -march=armv6zk, is still accepted. | |
208 | ||
88f0ea34 MW |
209 | * Support for the ARMv8.1 architecture has been added to the Aarch64 port. |
210 | Support for the individual ARMv8.1 Adv.SIMD, LOR and PAN architecture | |
211 | extensions has also been added to the Aarch64 port. | |
212 | ||
a5932920 MW |
213 | * Support for the ARMv8.1 architecture has been added to the ARM port. Support |
214 | for the individual ARMv8.1 Adv.SIMD and PAN architecture extensions has also | |
215 | been added to the ARM port. | |
216 | ||
ea556d25 L |
217 | * Extend --compress-debug-sections option to support |
218 | --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF | |
219 | targets. | |
220 | ||
0d2b51ad L |
221 | * --compress-debug-sections is turned on for Linux/x86 by default. |
222 | ||
c50415e2 TG |
223 | Changes in 2.25: |
224 | ||
f36e8886 BS |
225 | * Add support for the AVR Tiny microcontrollers. |
226 | ||
73589c9d CS |
227 | * Replace support for openrisc and or32 with support for or1k. |
228 | ||
2e6976a8 | 229 | * Enhanced the ARM port to accept the assembler output from the CodeComposer |
a05a5b64 | 230 | Studio tool. Support is enabled via the new command-line option -mccs. |
2e6976a8 | 231 | |
35c08157 KLC |
232 | * Add support for the Andes NDS32. |
233 | ||
58ca03a2 TG |
234 | Changes in 2.24: |
235 | ||
13761a11 NC |
236 | * Add support for the Texas Instruments MSP430X processor. |
237 | ||
a05a5b64 | 238 | * Add -gdwarf-sections command-line option to enable per-code-section |
b40bf0a2 NC |
239 | generation of DWARF .debug_line sections. |
240 | ||
36591ba1 SL |
241 | * Add support for Altera Nios II. |
242 | ||
a3c62988 NC |
243 | * Add support for the Imagination Technologies Meta processor. |
244 | ||
5bf135a7 NC |
245 | * Add support for the v850e3v5. |
246 | ||
e8044f35 RS |
247 | * Remove assembler support for MIPS ECOFF targets. |
248 | ||
af18cb59 TG |
249 | Changes in 2.23: |
250 | ||
da2bb560 NC |
251 | * Add support for the 64-bit ARM architecture: AArch64. |
252 | ||
6927f982 NC |
253 | * Add support for S12X processor. |
254 | ||
b9c361e0 JL |
255 | * Add support for the VLE extension to the PowerPC architecture. |
256 | ||
f6c1a2d5 NC |
257 | * Add support for the Freescale XGATE architecture. |
258 | ||
fa94de6b RM |
259 | * Add support for .bundle_align_mode, .bundle_lock, and .bundle_unlock |
260 | directives. These are currently available only for x86 and ARM targets. | |
261 | ||
99c513f6 DD |
262 | * Add support for the Renesas RL78 architecture. |
263 | ||
cfb8c092 NC |
264 | * Add support for the Adapteva EPIPHANY architecture. |
265 | ||
fe13e45b | 266 | * For x86, allow 'rep bsf', 'rep bsr', and 'rep ret' syntax. |
29c048b6 | 267 | |
a7142d94 TG |
268 | Changes in 2.22: |
269 | ||
69f56ae1 | 270 | * Add support for the Tilera TILEPro and TILE-Gx architectures. |
44f45767 | 271 | |
90b3661c | 272 | Changes in 2.21: |
44f45767 | 273 | |
5fec8599 L |
274 | * Gas no longer requires doubling of ampersands in macros. |
275 | ||
40b36596 JM |
276 | * Add support for the TMS320C6000 (TI C6X) processor family. |
277 | ||
31907d5e DK |
278 | * GAS now understands an extended syntax in the .section directive flags |
279 | for COFF targets that allows the section's alignment to be specified. This | |
280 | feature has also been backported to the 2.20 release series, starting with | |
281 | 2.20.1. | |
282 | ||
c7927a3c NC |
283 | * Add support for the Renesas RX processor. |
284 | ||
a05a5b64 | 285 | * New command-line option, --compress-debug-sections, which requests |
700c4060 CC |
286 | compression of DWARF debug information sections in the relocatable output |
287 | file. Compressed debug sections are supported by readelf, objdump, and | |
288 | gold, but not currently by Gnu ld. | |
289 | ||
81c23f82 TG |
290 | Changes in 2.20: |
291 | ||
1cd986c5 NC |
292 | * Added support for v850e2 and v850e2v3. |
293 | ||
3e7a7d11 NC |
294 | * GNU/Linux targets now supports "gnu_unique_object" as a value in the .type |
295 | pseudo op. It marks the symbol as being globally unique in the entire | |
296 | process. | |
297 | ||
c921be7d NC |
298 | * ARM assembler now supports .inst[.nw] pseudo-ops to insert opcodes specified |
299 | in binary rather than text. | |
6e33da12 | 300 | |
c1711530 DK |
301 | * Add support for common symbol alignment to PE formats. |
302 | ||
92846e72 CC |
303 | * Add support for the new discriminator column in the DWARF line table, |
304 | with a discriminator operand for the .loc directive. | |
305 | ||
c3b7224a NC |
306 | * Add support for Sunplus score architecture. |
307 | ||
d8045f23 NC |
308 | * The .type pseudo-op now accepts a type of STT_GNU_IFUNC which can be used to |
309 | indicate that if the symbol is the target of a relocation, its value should | |
310 | not be use. Instead the function should be invoked and its result used as | |
311 | the value. | |
fa94de6b | 312 | |
84e94c90 NC |
313 | * Add support for Lattice Mico32 (lm32) architecture. |
314 | ||
fa94de6b | 315 | * Add support for Xilinx MicroBlaze architecture. |
caa03924 | 316 | |
6e33da12 TG |
317 | Changes in 2.19: |
318 | ||
4f6d9c90 DJ |
319 | * New pseudo op .cfi_val_encoded_addr, to record constant addresses in unwind |
320 | tables without runtime relocation. | |
321 | ||
a05a5b64 | 322 | * New command-line option, -h-tick-hex, for sh, m32c, and h8/300 targets, which |
6fd4f6cc DD |
323 | adds compatibility with H'00 style hex constants. |
324 | ||
a05a5b64 | 325 | * New command-line option, -msse-check=[none|error|warning], for x86 |
daf50ae7 L |
326 | targets. |
327 | ||
a05a5b64 | 328 | * New sub-option added to the assembler's -a command-line switch to |
83f10cb2 NC |
329 | generate a listing output. The 'g' sub-option will insert into the listing |
330 | various information about the assembly, such as assembler version, the | |
a05a5b64 | 331 | command-line options used, and a time stamp. |
83f10cb2 | 332 | |
a05a5b64 | 333 | * New command-line option -msse2avx for x86 target to encode SSE |
c0f3af97 L |
334 | instructions with VEX prefix. |
335 | ||
f1f8f695 | 336 | * Add Intel XSAVE, EPT, MOVBE, AES, PCLMUL, AVX/FMA support for x86 target. |
c0f3af97 | 337 | |
a05a5b64 | 338 | * New command-line options, -march=CPU[,+EXTENSION...], -mtune=CPU, |
ae40c993 L |
339 | -mmnemonic=[att|intel], -msyntax=[att|intel], -mindex-reg, |
340 | -mnaked-reg and -mold-gcc, for x86 targets. | |
341 | ||
38a57ae7 NC |
342 | * Support for generating wide character strings has been added via the new |
343 | pseudo ops: .string16, .string32 and .string64. | |
344 | ||
85f10a01 MM |
345 | * Support for SSE5 has been added to the i386 port. |
346 | ||
7c3d153f NC |
347 | Changes in 2.18: |
348 | ||
ec2655a6 NC |
349 | * The GAS sources are now released under the GPLv3. |
350 | ||
3d3d428f NC |
351 | * Support for the National Semiconductor CR16 target has been added. |
352 | ||
3f9ce309 AM |
353 | * Added gas .reloc pseudo. This is a low-level interface for creating |
354 | relocations. | |
355 | ||
99ad8390 NC |
356 | * Add support for x86_64 PE+ target. |
357 | ||
1c0d3aa6 | 358 | * Add support for Score target. |
83518699 | 359 | |
ec2655a6 NC |
360 | Changes in 2.17: |
361 | ||
d70c5fc7 NC |
362 | * Support for the Infineon XC16X has been added by KPIT Cummins Infosystems. |
363 | ||
08333dc4 NS |
364 | * Support for ms2 architecture has been added. |
365 | ||
b7b8fb1d NC |
366 | * Support for the Z80 processor family has been added. |
367 | ||
3e8a519c MM |
368 | * Add support for the "@<file>" syntax to the command line, so that extra |
369 | switches can be read from <file>. | |
370 | ||
a05a5b64 | 371 | * The SH target supports a new command-line switch --enable-reg-prefix which, |
37dedf66 NC |
372 | if enabled, will allow register names to be optionally prefixed with a $ |
373 | character. This allows register names to be distinguished from label names. | |
fa94de6b | 374 | |
6eaeac8a JB |
375 | * Macros with a variable number of arguments are now supported. See the |
376 | documentation for how this works. | |
377 | ||
4bdd3565 NC |
378 | * Added --reduce-memory-overheads switch to reduce the size of the hash |
379 | tables used, at the expense of longer assembly times, and | |
380 | --hash-size=<NUMBER> to set the size of the hash tables used by gas. | |
381 | ||
5e75c3ab JB |
382 | * Macro names and macro parameter names can now be any identifier that would |
383 | also be legal as a symbol elsewhere. For macro parameter names, this is | |
384 | known to cause problems in certain sources when the respective target uses | |
385 | characters inconsistently, and thus macro parameter references may no longer | |
386 | be recognized as such (see the documentation for details). | |
fa94de6b | 387 | |
d2c5f73e NC |
388 | * Support the .f_floating, .d_floating, .g_floating and .h_floating directives |
389 | for the VAX target in order to be more compatible with the VAX MACRO | |
390 | assembler. | |
391 | ||
a05a5b64 | 392 | * New command-line option -mtune=[itanium1|itanium2] for IA64 targets. |
8c2fda1d | 393 | |
957d91c1 NC |
394 | Changes in 2.16: |
395 | ||
fffeaa5f JB |
396 | * Redefinition of macros now results in an error. |
397 | ||
a05a5b64 | 398 | * New command-line option -mhint.b=[ok|warning|error] for IA64 targets. |
91d777ee | 399 | |
a05a5b64 | 400 | * New command-line option -munwind-check=[warning|error] for IA64 |
970d6792 L |
401 | targets. |
402 | ||
f1dab70d JB |
403 | * The IA64 port now uses automatic dependency violation removal as its default |
404 | mode. | |
405 | ||
7499d566 NC |
406 | * Port to MAXQ processor contributed by HCL Tech. |
407 | ||
7ed4c4c5 NC |
408 | * Added support for generating unwind tables for ARM ELF targets. |
409 | ||
a05a5b64 | 410 | * Add a -g command-line option to generate debug information in the target's |
329e276d NC |
411 | preferred debug format. |
412 | ||
1fe1f39c NC |
413 | * Support for the crx-elf target added. |
414 | ||
1a320fbb | 415 | * Support for the sh-symbianelf target added. |
1fe1f39c | 416 | |
0503b355 BF |
417 | * Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations |
418 | on pe[i]-i386; required for this target's DWARF 2 support. | |
419 | ||
6b6e92f4 NC |
420 | * Support for Motorola MCF521x/5249/547x/548x added. |
421 | ||
fd99574b NC |
422 | * Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC |
423 | instrucitons. | |
424 | ||
a05a5b64 | 425 | * New command-line option -mno-shared for MIPS ELF targets. |
aa6975fb | 426 | |
a05a5b64 | 427 | * New command-line option --alternate and pseudo-ops .altmacro and .noaltmacro |
caa32fe5 NC |
428 | added to enter (and leave) alternate macro syntax mode. |
429 | ||
0477af35 NC |
430 | Changes in 2.15: |
431 | ||
7a7f4e42 CD |
432 | * The MIPS -membedded-pic option (Embedded-PIC code generation) is |
433 | deprecated and will be removed in a future release. | |
434 | ||
6edf0760 NC |
435 | * Added PIC m32r Linux (ELF) and support to M32R assembler. |
436 | ||
09d92015 MM |
437 | * Added support for ARM V6. |
438 | ||
88da98f3 MS |
439 | * Added support for sh4a and variants. |
440 | ||
eb764db8 NC |
441 | * Support for Renesas M32R2 added. |
442 | ||
88da98f3 MS |
443 | * Limited support for Mapping Symbols as specified in the ARM ELF |
444 | specification has been added to the arm assembler. | |
ed769ec1 | 445 | |
0bbf2aa4 NC |
446 | * On ARM architectures, added a new gas directive ".unreq" that undoes |
447 | definitions created by ".req". | |
448 | ||
3e602632 NC |
449 | * Support for Motorola ColdFire MCF528x added. |
450 | ||
05da4302 NC |
451 | * Added --gstabs+ switch to enable the generation of STABS debug format |
452 | information with GNU extensions. | |
fa94de6b | 453 | |
6a265366 CD |
454 | * Added support for MIPS64 Release 2. |
455 | ||
8ad30312 NC |
456 | * Added support for v850e1. |
457 | ||
12b55ccc L |
458 | * Added -n switch for x86 assembler. By default, x86 GAS replaces |
459 | multiple nop instructions used for alignment within code sections | |
460 | with multi-byte nop instructions such as leal 0(%esi,1),%esi. This | |
461 | switch disables the optimization. | |
462 | ||
78849248 ILT |
463 | * Removed -n option from MIPS assembler. It was not useful, and confused the |
464 | existing -non_shared option. | |
465 | ||
43c58ae6 CD |
466 | Changes in 2.14: |
467 | ||
69be0a2b CD |
468 | * Added support for MIPS32 Release 2. |
469 | ||
e8fd7476 NC |
470 | * Added support for Xtensa architecture. |
471 | ||
e16bb312 NC |
472 | * Support for Intel's iWMMXt processor (an ARM variant) added. |
473 | ||
cce4814f NC |
474 | * An assembler test generator has been contributed and an example file that |
475 | uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c). | |
fa94de6b | 476 | |
5177500f NC |
477 | * Support for SH2E added. |
478 | ||
fea17916 NC |
479 | * GASP has now been removed. |
480 | ||
004d9caf NC |
481 | * Support for Texas Instruments TMS320C4x and TMS320C3x series of |
482 | DSP's contributed by Michael Hayes and Svein E. Seldal. | |
fa94de6b | 483 | |
a40cbfa3 NC |
484 | * Support for the Ubicom IP2xxx microcontroller added. |
485 | ||
2cbb2eef NC |
486 | Changes in 2.13: |
487 | ||
a40cbfa3 NC |
488 | * Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400 |
489 | and FR500 included. | |
0ebb9a87 | 490 | |
a40cbfa3 | 491 | * Support for DLX processor added. |
52216602 | 492 | |
a40cbfa3 NC |
493 | * GASP has now been deprecated and will be removed in a future release. Use |
494 | the macro facilities in GAS instead. | |
3f965e60 | 495 | |
a40cbfa3 NC |
496 | * GASP now correctly parses floating point numbers. Unless the base is |
497 | explicitly specified, they are interpreted as decimal numbers regardless of | |
498 | the currently specified base. | |
1ac57253 | 499 | |
9a66911f NC |
500 | Changes in 2.12: |
501 | ||
a40cbfa3 | 502 | * Support for Don Knuth's MMIX, by Hans-Peter Nilsson. |
49fda6c8 | 503 | |
a40cbfa3 | 504 | * Support for the OpenRISC 32-bit embedded processor by OpenCores. |
3b16e843 | 505 | |
fa94de6b RM |
506 | * The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for |
507 | specifying the target instruction set. The old method of specifying the | |
a40cbfa3 NC |
508 | target processor has been deprecated, but is still accepted for |
509 | compatibility. | |
03b1477f | 510 | |
a40cbfa3 NC |
511 | * Support for the VFP floating-point instruction set has been added to |
512 | the ARM assembler. | |
252b5132 | 513 | |
a40cbfa3 NC |
514 | * New psuedo op: .incbin to include a set of binary data at a given point |
515 | in the assembly. Contributed by Anders Norlander. | |
7e005732 | 516 | |
a40cbfa3 NC |
517 | * The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated |
518 | but still works for compatability. | |
ec68c924 | 519 | |
fa94de6b | 520 | * The MIPS assembler no longer issues a warning by default when it |
a05a5b64 | 521 | generates a nop instruction from a macro. The new command-line option |
a40cbfa3 | 522 | -n will turn on the warning. |
63486801 | 523 | |
2dac7317 JW |
524 | Changes in 2.11: |
525 | ||
500800ca NC |
526 | * Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff. |
527 | ||
a40cbfa3 | 528 | * x86 gas now supports the full Pentium4 instruction set. |
a167610d | 529 | |
a40cbfa3 | 530 | * Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs. |
c0d8940f | 531 | |
a40cbfa3 | 532 | * Support for Motorola 68HC11 and 68HC12. |
df86943d | 533 | |
a40cbfa3 | 534 | * Support for Texas Instruments TMS320C54x (tic54x). |
39bec121 | 535 | |
a40cbfa3 | 536 | * Support for IA-64. |
2dac7317 | 537 | |
a40cbfa3 | 538 | * Support for i860, by Jason Eckhardt. |
22b36938 | 539 | |
a40cbfa3 | 540 | * Support for CRIS (Axis Communications ETRAX series). |
5bcac8a4 | 541 | |
a40cbfa3 | 542 | * x86 gas has a new .arch pseudo op to specify the target CPU architecture. |
a38cf1db | 543 | |
a05a5b64 | 544 | * x86 gas -q command-line option quietens warnings about register size changes |
a40cbfa3 NC |
545 | due to suffix, indirect jmp/call without `*', stand-alone prefixes, and |
546 | translating various deprecated floating point instructions. | |
a38cf1db | 547 | |
252b5132 RH |
548 | Changes in 2.10: |
549 | ||
a40cbfa3 NC |
550 | * Support for the ARM msr instruction was changed to only allow an immediate |
551 | operand when altering the flags field. | |
d14442f4 | 552 | |
a40cbfa3 | 553 | * Support for ATMEL AVR. |
adde6300 | 554 | |
a40cbfa3 | 555 | * Support for IBM 370 ELF. Somewhat experimental. |
b5ebe70e | 556 | |
a40cbfa3 | 557 | * Support for numbers with suffixes. |
3fd9f047 | 558 | |
a40cbfa3 | 559 | * Added support for breaking to the end of repeat loops. |
6a6987a9 | 560 | |
a40cbfa3 | 561 | * Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL). |
6a6987a9 | 562 | |
a40cbfa3 | 563 | * New .elseif pseudo-op added. |
3fd9f047 | 564 | |
a40cbfa3 | 565 | * New --fatal-warnings option. |
1f776aa5 | 566 | |
a40cbfa3 | 567 | * picoJava architecture support added. |
252b5132 | 568 | |
a40cbfa3 | 569 | * Motorola MCore 210 processor support added. |
041dd5a9 | 570 | |
fa94de6b | 571 | * A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386 |
a40cbfa3 | 572 | assembly programs with intel syntax. |
252b5132 | 573 | |
a40cbfa3 | 574 | * New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code. |
252b5132 | 575 | |
a40cbfa3 | 576 | * Added -gdwarf2 option to generate DWARF 2 debugging information. |
041dd5a9 | 577 | |
a40cbfa3 | 578 | * Full 16-bit mode support for i386. |
252b5132 | 579 | |
fa94de6b | 580 | * Greatly improved instruction operand checking for i386. This change will |
a40cbfa3 NC |
581 | produce errors or warnings on incorrect assembly code that previous versions |
582 | of gas accepted. If you get unexpected messages from code that worked with | |
583 | older versions of gas, please double check the code before reporting a bug. | |
252b5132 | 584 | |
a40cbfa3 | 585 | * Weak symbol support added for COFF targets. |
252b5132 | 586 | |
a40cbfa3 | 587 | * Mitsubishi D30V support added. |
252b5132 | 588 | |
a40cbfa3 | 589 | * Texas Instruments c80 (tms320c80) support added. |
252b5132 | 590 | |
a40cbfa3 | 591 | * i960 ELF support added. |
bedf545c | 592 | |
a40cbfa3 | 593 | * ARM ELF support added. |
a057431b | 594 | |
252b5132 RH |
595 | Changes in 2.9: |
596 | ||
a40cbfa3 | 597 | * Texas Instruments c30 (tms320c30) support added. |
252b5132 | 598 | |
fa94de6b | 599 | * The assembler now optimizes the exception frame information generated by egcs |
a40cbfa3 | 600 | and gcc 2.8. The new --traditional-format option disables this optimization. |
252b5132 | 601 | |
a40cbfa3 | 602 | * Added --gstabs option to generate stabs debugging information. |
252b5132 | 603 | |
fa94de6b | 604 | * The -a option takes a new suboption, m (e.g., -alm) to expand macros in a |
a40cbfa3 | 605 | listing. |
252b5132 | 606 | |
a40cbfa3 | 607 | * Added -MD option to print dependencies. |
252b5132 RH |
608 | |
609 | Changes in 2.8: | |
610 | ||
a40cbfa3 | 611 | * BeOS support added. |
252b5132 | 612 | |
a40cbfa3 | 613 | * MIPS16 support added. |
252b5132 | 614 | |
a40cbfa3 | 615 | * Motorola ColdFire 5200 support added (configure for m68k and use -m5200). |
252b5132 | 616 | |
a40cbfa3 | 617 | * Alpha/VMS support added. |
252b5132 | 618 | |
a40cbfa3 NC |
619 | * m68k options --base-size-default-16, --base-size-default-32, |
620 | --disp-size-default-16, and --disp-size-default-32 added. | |
252b5132 | 621 | |
a40cbfa3 NC |
622 | * The alignment directives now take an optional third argument, which is the |
623 | maximum number of bytes to skip. If doing the alignment would require | |
624 | skipping more than the given number of bytes, the alignment is not done at | |
625 | all. | |
252b5132 | 626 | |
a40cbfa3 | 627 | * The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. |
252b5132 | 628 | |
a40cbfa3 NC |
629 | * The -a option takes a new suboption, c (e.g., -alc), to skip false |
630 | conditionals in listings. | |
252b5132 | 631 | |
a40cbfa3 NC |
632 | * Added new pseudo-op, .equiv; it's like .equ, except that it is an error if |
633 | the symbol is already defined. | |
252b5132 RH |
634 | |
635 | Changes in 2.7: | |
636 | ||
a40cbfa3 NC |
637 | * The PowerPC assembler now allows the use of symbolic register names (r0, |
638 | etc.) if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) | |
639 | can be used any time. PowerPC 860 move to/from SPR instructions have been | |
640 | added. | |
252b5132 | 641 | |
a40cbfa3 | 642 | * Alpha Linux (ELF) support added. |
252b5132 | 643 | |
a40cbfa3 | 644 | * PowerPC ELF support added. |
252b5132 | 645 | |
a40cbfa3 | 646 | * m68k Linux (ELF) support added. |
252b5132 | 647 | |
a40cbfa3 | 648 | * i960 Hx/Jx support added. |
252b5132 | 649 | |
a40cbfa3 | 650 | * i386/PowerPC gnu-win32 support added. |
252b5132 | 651 | |
a40cbfa3 NC |
652 | * SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the |
653 | default is to build COFF-only support. To get a set of tools that generate | |
fa94de6b | 654 | ELF (they'll understand both COFF and ELF), you must configure with |
a40cbfa3 | 655 | target=i386-unknown-sco3.2v5elf. |
252b5132 | 656 | |
a40cbfa3 | 657 | * m88k-motorola-sysv3* support added. |
252b5132 RH |
658 | |
659 | Changes in 2.6: | |
660 | ||
a40cbfa3 | 661 | * Gas now directly supports macros, without requiring GASP. |
252b5132 | 662 | |
a40cbfa3 NC |
663 | * Gas now has an MRI assembler compatibility mode. Use -M or --mri to select |
664 | MRI mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the | |
665 | ``.mri 0'' is seen; this can be convenient for inline assembler code. | |
252b5132 | 666 | |
a40cbfa3 | 667 | * Added --defsym SYM=VALUE option. |
252b5132 | 668 | |
a40cbfa3 | 669 | * Added -mips4 support to MIPS assembler. |
252b5132 | 670 | |
a40cbfa3 | 671 | * Added PIC support to Solaris and SPARC SunOS 4 assembler. |
252b5132 RH |
672 | |
673 | Changes in 2.4: | |
674 | ||
a40cbfa3 | 675 | * Converted this directory to use an autoconf-generated configure script. |
252b5132 | 676 | |
a40cbfa3 | 677 | * ARM support, from Richard Earnshaw. |
252b5132 | 678 | |
a40cbfa3 NC |
679 | * Updated VMS support, from Pat Rankin, including considerably improved |
680 | debugging support. | |
252b5132 | 681 | |
a40cbfa3 | 682 | * Support for the control registers in the 68060. |
252b5132 | 683 | |
a40cbfa3 | 684 | * Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to |
fa94de6b RM |
685 | provide for possible future gcc changes, for targets where gas provides some |
686 | features not available in the native assembler. If the native assembler is | |
a40cbfa3 | 687 | used, it should become obvious pretty quickly what the problem is. |
252b5132 | 688 | |
a40cbfa3 | 689 | * Usage message is available with "--help". |
252b5132 | 690 | |
fa94de6b | 691 | * The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 |
a40cbfa3 | 692 | also, but didn't get into the NEWS file.) |
252b5132 | 693 | |
a40cbfa3 | 694 | * Weak symbol support for a.out. |
252b5132 | 695 | |
fa94de6b | 696 | * A bug in the listing code which could cause an infinite loop has been fixed. |
a40cbfa3 | 697 | Bugs in listings when generating a COFF object file have also been fixed. |
252b5132 | 698 | |
a40cbfa3 NC |
699 | * Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by |
700 | Paul Kranenburg. | |
252b5132 | 701 | |
a40cbfa3 NC |
702 | * Improved Alpha support. Immediate constants can have a much larger range |
703 | now. Support for the 21164 has been contributed by Digital. | |
252b5132 | 704 | |
a40cbfa3 | 705 | * Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. |
252b5132 RH |
706 | |
707 | Changes in 2.3: | |
708 | ||
a40cbfa3 | 709 | * Mach i386 support, by David Mackenzie and Ken Raeburn. |
252b5132 | 710 | |
a40cbfa3 | 711 | * RS/6000 and PowerPC support by Ian Taylor. |
252b5132 | 712 | |
a40cbfa3 NC |
713 | * VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, |
714 | based on mail received from various people. The `-h#' option should work | |
715 | again too. | |
252b5132 | 716 | |
a40cbfa3 | 717 | * HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work |
fa94de6b | 718 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special |
a40cbfa3 NC |
719 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve |
720 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu | |
721 | in the "dist" directory. | |
252b5132 | 722 | |
a40cbfa3 NC |
723 | * Vax support in gas fixed for BSD, so it builds and seems to run a couple |
724 | simple tests okay. I haven't put it through extensive testing. (GNU make is | |
725 | currently required for BSD 4.3 builds.) | |
252b5132 | 726 | |
fa94de6b | 727 | * Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is |
a40cbfa3 NC |
728 | based on code donated by CMU, which used an a.out-based format. I'm afraid |
729 | the alpha-a.out support is pretty badly mangled, and much of it removed; | |
730 | making it work will require rewriting it as BFD support for the format anyways. | |
252b5132 | 731 | |
a40cbfa3 | 732 | * Irix 5 support. |
252b5132 | 733 | |
fa94de6b | 734 | * The test suites have been fixed up a bit, so that they should work with a |
a40cbfa3 | 735 | couple different versions of expect and dejagnu. |
252b5132 | 736 | |
fa94de6b RM |
737 | * Symbols' values are now handled internally as expressions, permitting more |
738 | flexibility in evaluating them in some cases. Some details of relocation | |
a40cbfa3 NC |
739 | handling have also changed, and simple constant pool management has been |
740 | added, to make the Alpha port easier. | |
252b5132 | 741 | |
a40cbfa3 NC |
742 | * New option "--statistics" for printing out program run times. This is |
743 | intended to be used with the gcc "-Q" option, which prints out times spent in | |
744 | various phases of compilation. (You should be able to get all of them | |
745 | printed out with "gcc -Q -Wa,--statistics", I think.) | |
252b5132 RH |
746 | |
747 | Changes in 2.2: | |
748 | ||
a40cbfa3 | 749 | * RS/6000 AIX and MIPS SGI Irix 5 support has been added. |
252b5132 | 750 | |
fa94de6b RM |
751 | * Configurations that are still in development (and therefore are convenient to |
752 | have listed in configure.in) still get rejected without a minor change to | |
a40cbfa3 NC |
753 | gas/Makefile.in, so people not doing development work shouldn't get the |
754 | impression that support for such configurations is actually believed to be | |
755 | reliable. | |
252b5132 | 756 | |
fa94de6b | 757 | * The program name (usually "as") is printed when a fatal error message is |
a40cbfa3 NC |
758 | displayed. This should prevent some confusion about the source of occasional |
759 | messages about "internal errors". | |
252b5132 | 760 | |
fa94de6b | 761 | * ELF support is falling into place. Support for the 386 should be working. |
a40cbfa3 | 762 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. |
252b5132 | 763 | |
a40cbfa3 NC |
764 | * Symbol values are maintained as expressions instead of being immediately |
765 | boiled down to add-symbol, sub-symbol, and constant. This permits slightly | |
766 | more complex calculations involving symbols whose values are not alreadey | |
767 | known. | |
252b5132 | 768 | |
a40cbfa3 | 769 | * DBX-style debugging info ("stabs") is now supported for COFF formats. |
fa94de6b RM |
770 | If any stabs directives are seen in the source, GAS will create two new |
771 | sections: a ".stab" and a ".stabstr" section. The format of the .stab | |
a40cbfa3 NC |
772 | section is nearly identical to the a.out symbol format, and .stabstr is |
773 | its string table. For this to be useful, you must have configured GCC | |
774 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB | |
775 | that can use the stab sections (4.11 or later). | |
252b5132 | 776 | |
fa94de6b | 777 | * LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS |
a40cbfa3 | 778 | support is in progress. |
252b5132 RH |
779 | |
780 | Changes in 2.1: | |
781 | ||
fa94de6b | 782 | * Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been |
a40cbfa3 | 783 | incorporated, but not well tested yet. |
252b5132 | 784 | |
fa94de6b | 785 | * Altered the opcode table split for m68k; it should require less VM to compile |
a40cbfa3 | 786 | with gcc now. |
252b5132 | 787 | |
a40cbfa3 NC |
788 | * Some minor adjustments to add (Convergent Technologies') Miniframe support, |
789 | suggested by Ronald Cole. | |
252b5132 | 790 | |
a40cbfa3 NC |
791 | * HPPA support (running OSF only, not HPUX) has been contributed by Utah. This |
792 | includes improved ELF support, which I've started adapting for SPARC Solaris | |
793 | 2.x. Integration isn't completely, so it probably won't work. | |
252b5132 | 794 | |
a40cbfa3 | 795 | * HP9000/300 support, donated by HP, has been merged in. |
252b5132 | 796 | |
a40cbfa3 | 797 | * Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. |
252b5132 | 798 | |
a40cbfa3 | 799 | * Better error messages for unsupported configurations (e.g., hppa-hpux). |
252b5132 | 800 | |
a40cbfa3 | 801 | * Test suite framework is starting to become reasonable. |
252b5132 RH |
802 | |
803 | Changes in 2.0: | |
804 | ||
a40cbfa3 | 805 | * Mostly bug fixes. |
252b5132 | 806 | |
a40cbfa3 | 807 | * Some more merging of BFD and ELF code, but ELF still doesn't work. |
252b5132 RH |
808 | |
809 | Changes in 1.94: | |
810 | ||
a40cbfa3 NC |
811 | * BFD merge is partly done. Adventurous souls may try giving configure the |
812 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out | |
813 | format accepts it; SPARC CPU accepts it. It's the default only for OS "elf" | |
814 | or "solaris". (ELF isn't really supported yet. It needs work. I've got | |
815 | some code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not | |
816 | fully merged yet.) | |
252b5132 | 817 | |
a40cbfa3 NC |
818 | * The 68K opcode table has been split in half. It should now compile under gcc |
819 | without consuming ridiculous amounts of memory. | |
252b5132 | 820 | |
a40cbfa3 NC |
821 | * A couple data structures have been reduced in size. This should result in |
822 | saving a little bit of space at runtime. | |
252b5132 | 823 | |
a40cbfa3 NC |
824 | * Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF |
825 | code provided ROSE format support, which I haven't merged in yet. (I can | |
826 | make it available, if anyone wants to try it out.) Ralph's code, for BSD | |
827 | 4.4, supports a.out format. We don't have ECOFF support in just yet; it's | |
828 | coming. | |
252b5132 | 829 | |
a40cbfa3 | 830 | * Support for the Hitachi H8/500 has been added. |
252b5132 | 831 | |
a40cbfa3 NC |
832 | * VMS host and target support should be working now, thanks chiefly to Eric |
833 | Youngdale. | |
252b5132 RH |
834 | |
835 | Changes in 1.93.01: | |
836 | ||
a40cbfa3 | 837 | * For m68k, support for more processors has been added: 68040, CPU32, 68851. |
252b5132 | 838 | |
a40cbfa3 | 839 | * For i386, .align is now power-of-two; was number-of-bytes. |
252b5132 | 840 | |
a40cbfa3 NC |
841 | * For m68k, "%" is now accepted before register names. For COFF format, which |
842 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" | |
843 | can be distinguished from the register. | |
252b5132 | 844 | |
a40cbfa3 NC |
845 | * Last public release was 1.38. Lots of configuration changes since then, lots |
846 | of new CPUs and formats, lots of bugs fixed. | |
252b5132 RH |
847 | |
848 | \f | |
b3adc24a | 849 | Copyright (C) 2012-2020 Free Software Foundation, Inc. |
5bf135a7 NC |
850 | |
851 | Copying and distribution of this file, with or without modification, | |
852 | are permitted in any medium without royalty provided the copyright | |
853 | notice and this notice are preserved. | |
854 | ||
252b5132 RH |
855 | Local variables: |
856 | fill-column: 79 | |
857 | End: |