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Commit | Line | Data |
---|---|---|
252b5132 | 1 | -*- text -*- |
299b91cd NC |
2 | |
3 | Changes in 2.42: | |
4 | ||
5186cf88 IB |
5 | * Experimental support in GAS to synthesize CFI for ABI-conformant, |
6 | hand-written asm using the new command line option --scfi=experimental on | |
7 | x86-64. Only System V AMD64 ABI is supported. | |
6d96a594 | 8 | |
88601c2d SP |
9 | * Add support for the Arm Scalable Vector Extension version 2.1 (SVE2.1) |
10 | instructions. | |
11 | ||
89e06ec1 SP |
12 | * Add support for the AArch64 Scalable Matrix Extension version 2.1 (SME2.1) |
13 | instructions. | |
14 | ||
b3b647dc | 15 | * Add support for 'armv8.9-a' and 'armv9.4-a' for -march in Arm GAS. |
16 | ||
5e2f0c9a L |
17 | * Initial support for Intel APX: 32 GPRs, NDD, PUSH2/POP2 and PUSHP/POPP. |
18 | ||
27b33966 JB |
19 | * On RISC-V macro instructions expanding to AUIPC and a load, store, or branch |
20 | no longer accept x0 as an intermediate and/or destination register. | |
21 | ||
311276f1 SP |
22 | * Add support for Reliability, Availability and Serviceability extension v2 |
23 | (RASv2) for AArch64. | |
24 | ||
f3f6c0df VDN |
25 | * Add support for 128-bit Atomic Instructions (LSE128) for AArch64. |
26 | ||
f985c251 | 27 | * Add support for Guarded Control Stack (GCS) for AArch64. |
28 | ||
6c0ecdba SP |
29 | * Add support for AArch64 Check Feature Status Extension (CHK). |
30 | ||
8cee11ca | 31 | * Add support for 'armv8.9-a' and 'armv9.4-a' for -march in AArch64 GAS. |
32 | ||
8170af78 HL |
33 | * Add support for Intel USER_MSR instructions. |
34 | ||
4fc85f37 JB |
35 | * Add support for Intel AVX10.1. |
36 | ||
b5c37946 SJ |
37 | * Add support for Intel PBNDKB instructions. |
38 | ||
39 | * Add support for Intel SM4 instructions. | |
40 | ||
41 | * Add support for Intel SM3 instructions. | |
42 | ||
43 | * Add support for Intel SHA512 instructions. | |
44 | ||
45 | * Add support for Intel AVX-VNNI-INT16 instructions. | |
46 | ||
67bed49e RB |
47 | * Add support for Cortex-A520 for AArch64. |
48 | ||
7d6a2e34 RB |
49 | * Add support for Cortex-A720 for AArch64. |
50 | ||
528c1f2b ML |
51 | * Add support for Cortex-X3 for AArch64. |
52 | ||
0515a7b6 SJ |
53 | * Add support for Cortex-X4 for AArch64. |
54 | ||
8321007a | 55 | * Add support for RISC-V T-Head extensions (XTheadVector, XTheadZvlsseg |
86fbfedd JM |
56 | and XTheadZvamo) from version 2.3.0 of the T-Head ISA manual. |
57 | ||
8321007a NC |
58 | * Add support for RISC-V CORE-V extensions (XCVmac, XCValu) with version 1.0. |
59 | ||
248bf6de NC |
60 | * Add support for RISC-V SiFive VCIX extension (XSfVcp) with version 1.0. |
61 | ||
927d9ccf JM |
62 | * The BPF assembler now uses semi-colon (;) to separate statements, and |
63 | therefore they cannot longer be used to begin line comments. This matches the | |
64 | behavior of the clang/LLVM BPF assembler. | |
65 | ||
dd2947e7 JM |
66 | * The BPF assembler now allows using both hash (#) and double slash (//) to |
67 | begin line comments. | |
68 | ||
36176c5d XR |
69 | * Add support for LoongArch v1.10 new instructions: estimated reciprocal |
70 | instructions, sub-word atomic instructions, atomic CAS instructions, | |
71 | 16-byte store-conditional instruction, load-linked instructions with | |
72 | acquire semantics, and store-conditional instructions with release | |
73 | semantics. | |
74 | ||
75 | * The %call36 relocation operator, along with the pseudo-instructions | |
76 | call36 and tail36, are now usable with the LoongArch "medium" code | |
77 | model, allowing text sections up to 128 GiB. | |
78 | ||
79 | * TLS descriptors (TLSDESC) are now supported on LoongArch. This includes | |
80 | the following new relocation operators: %desc_pc_hi20, %desc_pc_lo12, | |
81 | %desc_ld, and %desc_call, and the la.tls.desc pseudo-instruction. | |
82 | ||
83 | * TLS LE relaxation is now supported on LoongArch. New relocation | |
84 | operators %le_hi20_r, %le_lo12r, and %le_add_r are now available. | |
85 | ||
86 | * Add support for LoongArch branch relaxation: a conditional branch with | |
87 | destination out of its immediate operand range, but still within | |
88 | a "b"'s range, is now assembled as an inverted branch and a "b". This | |
89 | works around the unreliable branch offset estimation of the compiler | |
90 | when .align directive is encoded into a long NOP sequence with an | |
91 | R_LARCH_RELAX by the assembler. | |
92 | ||
93 | * Symbol or label names in LoongArch assembly can now be spelled with | |
94 | double-quotes. | |
95 | ||
d501d384 NC |
96 | Changes in 2.41: |
97 | ||
6e712424 PI |
98 | * Add support for the KVX instruction set. |
99 | ||
c88ed92f ZJ |
100 | * Add support for Intel FRED instructions. |
101 | ||
102 | * Add support for Intel LKGS instructions. | |
103 | ||
d100d8c1 HJ |
104 | * Add support for Intel AMX-COMPLEX instructions. |
105 | ||
60336e19 RS |
106 | * Add SME2 support to the AArch64 port. |
107 | ||
695a8c34 JB |
108 | * A new .insn directive is recognized by x86 gas. |
109 | ||
3863e5e4 WX |
110 | * Add support for LoongArch LSX instructions. |
111 | ||
112 | * Add support for LoongArch LASX instructions. | |
113 | ||
114 | * Add support for LoongArch LVZ instructions. | |
115 | ||
116 | * Add support for LoongArch LBT instructions. | |
117 | ||
118 | * Initial LoongArch support for linker relaxation has been added. | |
119 | ||
120 | * Deprecate the LoongArch register aliases $v0, $v1, $x, $fv0 and $fv1. | |
121 | ||
a72b0718 NC |
122 | Changes in 2.40: |
123 | ||
b06311ad KL |
124 | * Add support for Intel RAO-INT instructions. |
125 | ||
01d8ce74 | 126 | * Add support for Intel AVX-NE-CONVERT instructions. |
127 | ||
2188d6ea HL |
128 | * Add support for Intel MSRLIST instructions. |
129 | ||
941f0833 HL |
130 | * Add support for Intel WRMSRNS instructions. |
131 | ||
a93e3234 HJ |
132 | * Add support for Intel CMPccXADD instructions. |
133 | ||
23ae61ad CL |
134 | * Add support for Intel AVX-VNNI-INT8 instructions. |
135 | ||
4321af3e HW |
136 | * Add support for Intel AVX-IFMA instructions. |
137 | ||
ef07be45 CL |
138 | * Add support for Intel PREFETCHI instructions. |
139 | ||
68830fba CL |
140 | * Add support for Intel AMX-FP16 instructions. |
141 | ||
2cac01e3 FS |
142 | * gas now supports --compress-debug-sections=zstd to compress |
143 | debug sections with zstd. | |
d846c35e | 144 | |
b0c295e1 ML |
145 | * Add --enable-default-compressed-debug-sections-algorithm={zlib,zstd} |
146 | that selects the default compression algorithm | |
147 | for --enable-compressed-debug-sections. | |
2cac01e3 | 148 | |
27e60212 | 149 | * Add support for various T-Head extensions (XTheadBa, XTheadBb, XTheadBs, |
01804a09 | 150 | XTheadCmo, XTheadCondMov, XTheadFMemIdx, XTheadFmv, XTheadInt, XTheadMemIdx, |
4a3bc79b CM |
151 | XTheadMemPair, XTheadMac, and XTheadSync) from version 2.0 of the T-Head |
152 | ISA manual, which are implemented in the Allwinner D1. | |
27e60212 | 153 | |
f262d2df PD |
154 | * Add support for the RISC-V Zawrs extension, version 1.0-rc4. |
155 | ||
cafdb713 SP |
156 | * Add support for Cortex-X1C for Arm. |
157 | ||
b2cb03d5 IB |
158 | * New command line option --gsframe to generate SFrame unwind information |
159 | on x86_64 and aarch64 targets. | |
160 | ||
0bd09323 NC |
161 | Changes in 2.39: |
162 | ||
c085ab00 JB |
163 | * Remove (rudimentary) support for the x86-64 sub-architectures Intel L1OM and |
164 | Intel K1OM. | |
165 | ||
5a3ca6e3 PD |
166 | * Add support for the RISC-V Zicbop, Zicbom, and Zicboz extensions, version |
167 | 1.0-fd39d01. | |
168 | ||
169 | * Add support for the RISC-V Zfh extension, version 1.0. | |
170 | ||
171 | * Add support for the Zhinx extension, version 1.0.0-rc. | |
172 | ||
173 | * Add support for the RISC-V H extension. | |
174 | ||
175 | * Add support for the RISC-V Zfhmin extension, version 1.0, and Zhinxmin | |
176 | extension, version 1.0.0-rc. | |
177 | ||
a74e1cb3 NC |
178 | Changes in 2.38: |
179 | ||
36cb9e7e RS |
180 | * Add support for AArch64 system registers that were missing in previous |
181 | releases. | |
182 | ||
4462d7c4 | 183 | * Add support for the LoongArch instruction set. |
184 | ||
c8480b58 L |
185 | * Add a command-line option, -muse-unaligned-vector-move, for x86 target |
186 | to encode aligned vector move as unaligned vector move. | |
187 | ||
80cfde76 PW |
188 | * Add support for Cortex-R52+ for Arm. |
189 | ||
50aaf5e6 | 190 | * Add support for Cortex-A510, Cortex-A710, Cortex-X2 for AArch64. |
98ab23ab | 191 | |
14f45859 PW |
192 | * Add support for Cortex-A710 for Arm. |
193 | ||
57f02370 PW |
194 | * Add support for Scalable Matrix Extension (SME) for AArch64. |
195 | ||
578c64a4 NC |
196 | * The --multibyte-handling=[allow|warn|warn-sym-only] option tells the |
197 | assembler what to when it encoutners multibyte characters in the input. The | |
198 | default is to allow them. Setting the option to "warn" will generate a | |
199 | warning message whenever any multibyte character is encountered. Using the | |
200 | option to "warn-sym-only" will make the assembler generate a warning whenever a | |
201 | symbol is defined containing multibyte characters. (References to undefined | |
202 | symbols will not generate warnings). | |
203 | ||
ff01bb6c L |
204 | * Outputs of .ds.x directive and .tfloat directive with hex input from |
205 | x86 assembler have been reduced from 12 bytes to 10 bytes to match the | |
206 | output of .tfloat directive. | |
207 | ||
35180222 RS |
208 | * Add support for 'armv8.8-a', 'armv9-a', 'armv9.1-a', 'armv9.2-a' and |
209 | 'armv9.3-a' for -march in AArch64 GAS. | |
d5007f02 | 210 | |
a2b1ea81 RS |
211 | * Add support for 'armv8.7-a', 'armv8.8-a', 'armv9-a', 'armv9.1-a', |
212 | 'armv9.2-a' and 'armv9.3-a' for -march in Arm GAS. | |
3197e593 | 213 | |
0cc78721 CL |
214 | * Add support for Intel AVX512_FP16 instructions. |
215 | ||
6b60a1ec PD |
216 | * Add support for the RISC-V scalar crypto extension, version 1.0.0. |
217 | ||
218 | * Add support for the RISC-V vector extension, version 1.0. | |
219 | ||
220 | * Add support for the Z{f,d,q}inx extensions, version 1.0.0-rc. | |
221 | ||
222 | * Add support for the RISC-V svinval extension, version 1.0. | |
223 | ||
224 | * Add support for the RISC-V hypervisor extension, as defined by Privileged | |
225 | Specification 1.12. | |
226 | ||
51419248 NC |
227 | Changes in 2.37: |
228 | ||
933feaf3 AM |
229 | * arm-symbianelf support removed. |
230 | ||
02202574 PW |
231 | * Add support for Realm Management Extension (RME) for AArch64. |
232 | ||
157a088c PD |
233 | * Add support for the Zba, Zbb, Zbc, and Zbs subsets of the RISC-V |
234 | bit manipulation extension, version 0.93. | |
235 | ||
055bc77a NC |
236 | Changes in 2.36: |
237 | ||
58bf9b6a L |
238 | * Add support for Intel AVX VNNI instructions. |
239 | ||
c1fa250a LC |
240 | * Add support for Intel HRESET instruction. |
241 | ||
f64c42a9 LC |
242 | * Add support for Intel UINTR instructions. |
243 | ||
6d96a594 C |
244 | * Support non-absolute segment values for i386 lcall and ljmp. |
245 | ||
b71702f1 NC |
246 | * When setting the link order attribute of ELF sections, it is now possible to |
247 | use a numeric section index instead of symbol name. | |
42c36b73 | 248 | |
a3a02fe8 PW |
249 | * Add support for Cortex-A78, Cortex-A78AE, Cortex-A78C and Cortex-X1 for |
250 | AArch64 and ARM. | |
b71702f1 | 251 | Add support for Cortex-R82, Neoverse V1, and Neoverse N2 for ARM. |
77718e5b | 252 | |
b71702f1 | 253 | * Add support for ETMv4 (Embedded Trace Macrocell), ETE (Embedded Trace |
82c70b08 KT |
254 | Extension), TRBE (Trace Buffer Extension)and BRBE (Branch Record Buffer |
255 | Extension) system registers for AArch64. | |
c81946ef | 256 | |
8926e54e | 257 | * Add support for Armv8-R and Armv8.7-A AArch64. |
c81946ef | 258 | |
a984d94a | 259 | * Add support for DSB memory nXS barrier, WFET and WFIT instruction for Armv8.7 |
82503ca7 | 260 | AArch64. |
fd195909 | 261 | |
e64441b1 | 262 | * Add support for +flagm feature for -march in Armv8.4 AArch64. |
dd4a72c8 | 263 | |
fd65497d PW |
264 | * Add support for +ls64 feature for -march in Armv8.7 AArch64. Add atomic |
265 | 64-byte load/store instructions for this feature. | |
266 | ||
3f4ff088 PW |
267 | * Add support for +pauth (Pointer Authentication) feature for -march in |
268 | AArch64. | |
269 | ||
81d54bb7 | 270 | * Add support for Intel TDX instructions. |
96a84ea3 | 271 | |
c4694f17 TG |
272 | * Add support for Intel Key Locker instructions. |
273 | ||
b1766e7c NC |
274 | * Added a .nop directive to generate a single no-op instruction in a target |
275 | neutral manner. This instruction does have an effect on DWARF line number | |
276 | generation, if that is active. | |
277 | ||
a0522545 ML |
278 | * Removed --reduce-memory-overheads and --hash-size as gas now |
279 | uses hash tables that can be expand and shrink automatically. | |
280 | ||
789198ca L |
281 | * Add {disp16} pseudo prefix to x86 assembler. |
282 | ||
260cd341 LC |
283 | * Add support for Intel AMX instructions. |
284 | ||
939b95c7 L |
285 | * Configure with --enable-x86-used-note by default for Linux/x86. |
286 | ||
99fabbc9 JL |
287 | * Add support for the SHF_GNU_RETAIN flag, which can be applied to |
288 | sections using the 'R' flag in the .section directive. | |
289 | SHF_GNU_RETAIN specifies that the section should not be garbage | |
290 | collected by the linker. It requires the GNU or FreeBSD ELF OSABIs. | |
291 | ||
c17cf68c PD |
292 | * Add support for the RISC-V Zihintpause extension. |
293 | ||
b115b9fd NC |
294 | Changes in 2.35: |
295 | ||
bbd19b19 L |
296 | * X86 NaCl target support is removed. |
297 | ||
6914be53 L |
298 | * Extend .symver directive to update visibility of the original symbol |
299 | and assign one original symbol to different versioned symbols. | |
300 | ||
6e0e8b45 L |
301 | * Add support for Intel SERIALIZE and TSXLDTRK instructions. |
302 | ||
9e8f1c90 L |
303 | * Add -mlfence-after-load=, -mlfence-before-indirect-branch= and |
304 | -mlfence-before-ret= options to x86 assembler to help mitigate | |
305 | CVE-2020-0551. | |
306 | ||
5496f3c6 NC |
307 | * Add --gdwarf-5 option to the assembler to generate DWARF 5 debug output |
308 | (if such output is being generated). Added the ability to generate | |
309 | version 5 .debug_line sections. | |
310 | ||
251dae91 TC |
311 | * Add -mbig-obj support to i386 MingW targets. |
312 | ||
4362996c PD |
313 | * Add support for the -mriscv-isa-version argument, to select the version of |
314 | the RISC-V ISA specification used when assembling. | |
315 | ||
316 | * Remove support for the RISC-V privileged specification, version 1.9. | |
317 | ||
ae774686 NC |
318 | Changes in 2.34: |
319 | ||
5eb617a7 L |
320 | * Add -malign-branch-boundary=NUM, -malign-branch=TYPE[+TYPE...], |
321 | -malign-branch-prefix-size=NUM and -mbranches-within-32B-boundaries | |
322 | options to x86 assembler to align branches within a fixed boundary | |
323 | with segment prefixes or NOPs. | |
324 | ||
6655dba2 SB |
325 | * Add support for Zilog eZ80 and Zilog Z180 CPUs. |
326 | ||
327 | * Add support for z80-elf target. | |
328 | ||
329 | * Add support for relocation of each byte or word of multibyte value to Z80 | |
330 | targets (just use right shift to 0, 8, 16, or 24 bits or AND operation | |
331 | with 0xff/0xffff mask): ld a, label >> 16 \ ld hl, label & 0xffff | |
332 | ||
333 | * Add SDCC support for Z80 targets. | |
334 | ||
60391a25 PB |
335 | Changes in 2.33: |
336 | ||
7738ddb4 MM |
337 | * Add support for the Arm Scalable Vector Extension version 2 (SVE2) |
338 | instructions. | |
339 | ||
340 | * Add support for the Arm Transactional Memory Extension (TME) | |
341 | instructions. | |
342 | ||
514bbb0f AV |
343 | * Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE) |
344 | instructions. | |
345 | ||
b20d3859 BW |
346 | * For MIPS, Add -m[no-]fix-loongson3-llsc option to fix (or not) Loongson3 |
347 | LLSC Errata. Add a --enable-mips-fix-loongson3-llsc=[yes|no] configure | |
348 | time option to set the default behavior. Set the default if the configure | |
349 | option is not used to "no". | |
6f2117ba | 350 | |
546053ac DZ |
351 | * Add support for the Arm Cortex-A76AE, Cortex-A77 and Cortex-M35P |
352 | processors. | |
353 | ||
354 | * Add support for the AArch64 Cortex-A34, Cortex-A65, Cortex-A65AE, | |
355 | Cortex-A76AE, and Cortex-A77 processors. | |
356 | ||
b20d3859 BW |
357 | * Add .float16 directive for both Arm and AArch64 to allow encoding of 16-bit |
358 | floating point literals. Add .float16_format directive and | |
359 | -mfp16-format=[ieee|alternative] option for Arm to control the format of the | |
360 | encoding. | |
361 | ||
66f8b2cb AB |
362 | * Add --gdwarf-cie-version command line flag. This allows control over which |
363 | version of DWARF CIE the assembler creates. | |
364 | ||
f974f26c NC |
365 | Changes in 2.32: |
366 | ||
03751133 L |
367 | * Add -mvexwig=[0|1] option to x86 assembler to control encoding of |
368 | VEX.W-ignored (WIG) VEX instructions. | |
369 | ||
b4a3a7b4 L |
370 | * Add -mx86-used-note=[yes|no] option to generate (or not) x86 GNU property |
371 | notes. Add a --enable-x86-used-note configure time option to set the | |
372 | default behavior. Set the default if the configure option is not used | |
373 | to "no". | |
374 | ||
a693765e CX |
375 | * Add support for the MIPS Loongson EXTensions R2 (EXT2) instructions. |
376 | ||
bdc6c06e CX |
377 | * Add support for the MIPS Loongson EXTensions (EXT) instructions. |
378 | ||
716c08de CX |
379 | * Add support for the MIPS Loongson Content Address Memory (CAM) ASE. |
380 | ||
b8891f8d AJ |
381 | * Add support for the C-SKY processor series. |
382 | ||
8095d2f7 CX |
383 | * Add support for the MIPS Loongson MultiMedia extensions Instructions (MMI) |
384 | ASE. | |
385 | ||
719d8288 NC |
386 | Changes in 2.31: |
387 | ||
fc6141f0 NC |
388 | * The ADR and ADRL pseudo-instructions supported by the ARM assembler |
389 | now only set the bottom bit of the address of thumb function symbols | |
390 | if the -mthumb-interwork command line option is active. | |
391 | ||
6f20c942 FS |
392 | * Add support for the MIPS Global INValidate (GINV) ASE. |
393 | ||
730c3174 SE |
394 | * Add support for the MIPS Cyclic Redudancy Check (CRC) ASE. |
395 | ||
7b4ae824 JD |
396 | * Add support for the Freescale S12Z architecture. |
397 | ||
0df8ad28 NC |
398 | * Add --generate-missing-build-notes=[yes|no] option to create (or not) GNU |
399 | Build Attribute notes if none are present in the input sources. Add a | |
400 | --enable-generate-build-notes=[yes|no] configure time option to set the | |
401 | default behaviour. Set the default if the configure option is not used | |
402 | to "no". | |
403 | ||
bd5dea88 L |
404 | * Remove -mold-gcc command-line option for x86 targets. |
405 | ||
b6f8c7c4 L |
406 | * Add -O[2|s] command-line options to x86 assembler to enable alternate |
407 | shorter instruction encoding. | |
408 | ||
8f065d3b | 409 | * Add support for .nops directive. It is currently supported only for |
62a02d25 L |
410 | x86 targets. |
411 | ||
64411043 PD |
412 | * Add support for the .insn directive on RISC-V targets. |
413 | ||
9176ac5b NC |
414 | Changes in 2.30: |
415 | ||
ba8826a8 AO |
416 | * Add support for loaction views in DWARF debug line information. |
417 | ||
55a09eb6 TG |
418 | Changes in 2.29: |
419 | ||
a91e1603 L |
420 | * Add support for ELF SHF_GNU_MBIND. |
421 | ||
f96bd6c2 PC |
422 | * Add support for the WebAssembly file format and wasm32 ELF conversion. |
423 | ||
7e0de605 | 424 | * PowerPC gas now checks that the correct register class is used in |
ece5dcc1 AM |
425 | instructions. For instance, "addi %f4,%cr3,%r31" warns three times |
426 | that the registers are invalid. | |
7e0de605 | 427 | |
93f11b16 DD |
428 | * Add support for the Texas Instruments PRU processor. |
429 | ||
0cda1e19 TP |
430 | * Support for the ARMv8-R architecture and Cortex-R52 processor has been |
431 | added to the ARM port. | |
ced40572 | 432 | |
9703a4ef TG |
433 | Changes in 2.28: |
434 | ||
e23eba97 NC |
435 | * Add support for the RISC-V architecture. |
436 | ||
b19ea8d2 | 437 | * Add support for the ARM Cortex-M23 and Cortex-M33 processors. |
ce1b0a45 | 438 | |
96a84ea3 TG |
439 | Changes in 2.27: |
440 | ||
4e3e1fdf L |
441 | * Default to --enable-compressed-debug-sections=gas for Linux/x86 targets. |
442 | ||
2edb36e7 NC |
443 | * Add --no-pad-sections to stop the assembler from padding the end of output |
444 | sections up to their alignment boundary. | |
445 | ||
15afaa63 TP |
446 | * Support for the ARMv8-M architecture has been added to the ARM port. Support |
447 | for the ARMv8-M Security and DSP Extensions has also been added to the ARM | |
448 | port. | |
449 | ||
f36e33da CZ |
450 | * ARC backend accepts .extInstruction, .extCondCode, .extAuxRegister, and |
451 | .extCoreRegister pseudo-ops that allow an user to define custom | |
452 | instructions, conditional codes, auxiliary and core registers. | |
453 | ||
b8871f35 L |
454 | * Add a configure option --enable-elf-stt-common to decide whether ELF |
455 | assembler should generate common symbols with the STT_COMMON type by | |
456 | default. Default to no. | |
457 | ||
a05a5b64 | 458 | * New command-line option --elf-stt-common= for ELF targets to control |
b8871f35 L |
459 | whether to generate common symbols with the STT_COMMON type. |
460 | ||
9fb71ee4 NC |
461 | * Add ability to set section flags and types via numeric values for ELF |
462 | based targets. | |
81c23f82 | 463 | |
0cb4071e L |
464 | * Add a configure option --enable-x86-relax-relocations to decide whether |
465 | x86 assembler should generate relax relocations by default. Default to | |
466 | yes, except for x86 Solaris targets older than Solaris 12. | |
467 | ||
a05a5b64 | 468 | * New command-line option -mrelax-relocations= for x86 target to control |
0cb4071e L |
469 | whether to generate relax relocations. |
470 | ||
a05a5b64 | 471 | * New command-line option -mfence-as-lock-add=yes for x86 target to encode |
9d3fc4e1 L |
472 | lfence, mfence and sfence as "lock addl $0x0, (%[re]sp)". |
473 | ||
4670103e CZ |
474 | * Add assembly-time relaxation option for ARC cpus. |
475 | ||
9004b6bd AB |
476 | * Add --with-cpu=TYPE configure option for ARC gas. This allows the default |
477 | cpu type to be adjusted at configure time. | |
478 | ||
7feec526 TG |
479 | Changes in 2.26: |
480 | ||
edeefb67 L |
481 | * Add a configure option --enable-compressed-debug-sections={all,gas} to |
482 | decide whether DWARF debug sections should be compressed by default. | |
e12fe555 | 483 | |
886a2506 NC |
484 | * Add support for the ARC EM/HS, and ARC600/700 architectures. Remove |
485 | assembler support for Argonaut RISC architectures. | |
486 | ||
d02603dc NC |
487 | * Symbol and label names can now be enclosed in double quotes (") which allows |
488 | them to contain characters that are not part of valid symbol names in high | |
489 | level languages. | |
490 | ||
f33026a9 MW |
491 | * Added the correctly spelled -march=armv6kz, for ARMv6KZ support. The |
492 | previous spelling, -march=armv6zk, is still accepted. | |
493 | ||
88f0ea34 MW |
494 | * Support for the ARMv8.1 architecture has been added to the Aarch64 port. |
495 | Support for the individual ARMv8.1 Adv.SIMD, LOR and PAN architecture | |
496 | extensions has also been added to the Aarch64 port. | |
497 | ||
a5932920 MW |
498 | * Support for the ARMv8.1 architecture has been added to the ARM port. Support |
499 | for the individual ARMv8.1 Adv.SIMD and PAN architecture extensions has also | |
500 | been added to the ARM port. | |
501 | ||
ea556d25 L |
502 | * Extend --compress-debug-sections option to support |
503 | --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF | |
504 | targets. | |
505 | ||
0d2b51ad L |
506 | * --compress-debug-sections is turned on for Linux/x86 by default. |
507 | ||
c50415e2 TG |
508 | Changes in 2.25: |
509 | ||
f36e8886 BS |
510 | * Add support for the AVR Tiny microcontrollers. |
511 | ||
73589c9d CS |
512 | * Replace support for openrisc and or32 with support for or1k. |
513 | ||
2e6976a8 | 514 | * Enhanced the ARM port to accept the assembler output from the CodeComposer |
a05a5b64 | 515 | Studio tool. Support is enabled via the new command-line option -mccs. |
2e6976a8 | 516 | |
35c08157 KLC |
517 | * Add support for the Andes NDS32. |
518 | ||
58ca03a2 TG |
519 | Changes in 2.24: |
520 | ||
13761a11 NC |
521 | * Add support for the Texas Instruments MSP430X processor. |
522 | ||
a05a5b64 | 523 | * Add -gdwarf-sections command-line option to enable per-code-section |
b40bf0a2 NC |
524 | generation of DWARF .debug_line sections. |
525 | ||
36591ba1 SL |
526 | * Add support for Altera Nios II. |
527 | ||
a3c62988 NC |
528 | * Add support for the Imagination Technologies Meta processor. |
529 | ||
5bf135a7 NC |
530 | * Add support for the v850e3v5. |
531 | ||
e8044f35 RS |
532 | * Remove assembler support for MIPS ECOFF targets. |
533 | ||
af18cb59 TG |
534 | Changes in 2.23: |
535 | ||
da2bb560 NC |
536 | * Add support for the 64-bit ARM architecture: AArch64. |
537 | ||
6927f982 NC |
538 | * Add support for S12X processor. |
539 | ||
b9c361e0 JL |
540 | * Add support for the VLE extension to the PowerPC architecture. |
541 | ||
f6c1a2d5 NC |
542 | * Add support for the Freescale XGATE architecture. |
543 | ||
fa94de6b RM |
544 | * Add support for .bundle_align_mode, .bundle_lock, and .bundle_unlock |
545 | directives. These are currently available only for x86 and ARM targets. | |
546 | ||
99c513f6 DD |
547 | * Add support for the Renesas RL78 architecture. |
548 | ||
cfb8c092 NC |
549 | * Add support for the Adapteva EPIPHANY architecture. |
550 | ||
fe13e45b | 551 | * For x86, allow 'rep bsf', 'rep bsr', and 'rep ret' syntax. |
29c048b6 | 552 | |
a7142d94 TG |
553 | Changes in 2.22: |
554 | ||
69f56ae1 | 555 | * Add support for the Tilera TILEPro and TILE-Gx architectures. |
44f45767 | 556 | |
90b3661c | 557 | Changes in 2.21: |
44f45767 | 558 | |
5fec8599 L |
559 | * Gas no longer requires doubling of ampersands in macros. |
560 | ||
40b36596 JM |
561 | * Add support for the TMS320C6000 (TI C6X) processor family. |
562 | ||
31907d5e DK |
563 | * GAS now understands an extended syntax in the .section directive flags |
564 | for COFF targets that allows the section's alignment to be specified. This | |
565 | feature has also been backported to the 2.20 release series, starting with | |
566 | 2.20.1. | |
567 | ||
c7927a3c NC |
568 | * Add support for the Renesas RX processor. |
569 | ||
a05a5b64 | 570 | * New command-line option, --compress-debug-sections, which requests |
700c4060 CC |
571 | compression of DWARF debug information sections in the relocatable output |
572 | file. Compressed debug sections are supported by readelf, objdump, and | |
573 | gold, but not currently by Gnu ld. | |
574 | ||
81c23f82 TG |
575 | Changes in 2.20: |
576 | ||
1cd986c5 NC |
577 | * Added support for v850e2 and v850e2v3. |
578 | ||
3e7a7d11 NC |
579 | * GNU/Linux targets now supports "gnu_unique_object" as a value in the .type |
580 | pseudo op. It marks the symbol as being globally unique in the entire | |
581 | process. | |
582 | ||
c921be7d NC |
583 | * ARM assembler now supports .inst[.nw] pseudo-ops to insert opcodes specified |
584 | in binary rather than text. | |
6e33da12 | 585 | |
c1711530 DK |
586 | * Add support for common symbol alignment to PE formats. |
587 | ||
92846e72 CC |
588 | * Add support for the new discriminator column in the DWARF line table, |
589 | with a discriminator operand for the .loc directive. | |
590 | ||
c3b7224a NC |
591 | * Add support for Sunplus score architecture. |
592 | ||
d8045f23 NC |
593 | * The .type pseudo-op now accepts a type of STT_GNU_IFUNC which can be used to |
594 | indicate that if the symbol is the target of a relocation, its value should | |
595 | not be use. Instead the function should be invoked and its result used as | |
596 | the value. | |
fa94de6b | 597 | |
84e94c90 NC |
598 | * Add support for Lattice Mico32 (lm32) architecture. |
599 | ||
fa94de6b | 600 | * Add support for Xilinx MicroBlaze architecture. |
caa03924 | 601 | |
6e33da12 TG |
602 | Changes in 2.19: |
603 | ||
4f6d9c90 DJ |
604 | * New pseudo op .cfi_val_encoded_addr, to record constant addresses in unwind |
605 | tables without runtime relocation. | |
606 | ||
a05a5b64 | 607 | * New command-line option, -h-tick-hex, for sh, m32c, and h8/300 targets, which |
6fd4f6cc DD |
608 | adds compatibility with H'00 style hex constants. |
609 | ||
a05a5b64 | 610 | * New command-line option, -msse-check=[none|error|warning], for x86 |
daf50ae7 L |
611 | targets. |
612 | ||
a05a5b64 | 613 | * New sub-option added to the assembler's -a command-line switch to |
83f10cb2 NC |
614 | generate a listing output. The 'g' sub-option will insert into the listing |
615 | various information about the assembly, such as assembler version, the | |
a05a5b64 | 616 | command-line options used, and a time stamp. |
83f10cb2 | 617 | |
a05a5b64 | 618 | * New command-line option -msse2avx for x86 target to encode SSE |
c0f3af97 L |
619 | instructions with VEX prefix. |
620 | ||
f1f8f695 | 621 | * Add Intel XSAVE, EPT, MOVBE, AES, PCLMUL, AVX/FMA support for x86 target. |
c0f3af97 | 622 | |
a05a5b64 | 623 | * New command-line options, -march=CPU[,+EXTENSION...], -mtune=CPU, |
ae40c993 L |
624 | -mmnemonic=[att|intel], -msyntax=[att|intel], -mindex-reg, |
625 | -mnaked-reg and -mold-gcc, for x86 targets. | |
626 | ||
38a57ae7 NC |
627 | * Support for generating wide character strings has been added via the new |
628 | pseudo ops: .string16, .string32 and .string64. | |
629 | ||
85f10a01 MM |
630 | * Support for SSE5 has been added to the i386 port. |
631 | ||
7c3d153f NC |
632 | Changes in 2.18: |
633 | ||
ec2655a6 NC |
634 | * The GAS sources are now released under the GPLv3. |
635 | ||
3d3d428f NC |
636 | * Support for the National Semiconductor CR16 target has been added. |
637 | ||
3f9ce309 AM |
638 | * Added gas .reloc pseudo. This is a low-level interface for creating |
639 | relocations. | |
640 | ||
99ad8390 NC |
641 | * Add support for x86_64 PE+ target. |
642 | ||
1c0d3aa6 | 643 | * Add support for Score target. |
83518699 | 644 | |
ec2655a6 NC |
645 | Changes in 2.17: |
646 | ||
d70c5fc7 NC |
647 | * Support for the Infineon XC16X has been added by KPIT Cummins Infosystems. |
648 | ||
08333dc4 NS |
649 | * Support for ms2 architecture has been added. |
650 | ||
b7b8fb1d NC |
651 | * Support for the Z80 processor family has been added. |
652 | ||
3e8a519c MM |
653 | * Add support for the "@<file>" syntax to the command line, so that extra |
654 | switches can be read from <file>. | |
655 | ||
a05a5b64 | 656 | * The SH target supports a new command-line switch --enable-reg-prefix which, |
37dedf66 NC |
657 | if enabled, will allow register names to be optionally prefixed with a $ |
658 | character. This allows register names to be distinguished from label names. | |
fa94de6b | 659 | |
6eaeac8a JB |
660 | * Macros with a variable number of arguments are now supported. See the |
661 | documentation for how this works. | |
662 | ||
4bdd3565 NC |
663 | * Added --reduce-memory-overheads switch to reduce the size of the hash |
664 | tables used, at the expense of longer assembly times, and | |
665 | --hash-size=<NUMBER> to set the size of the hash tables used by gas. | |
666 | ||
5e75c3ab JB |
667 | * Macro names and macro parameter names can now be any identifier that would |
668 | also be legal as a symbol elsewhere. For macro parameter names, this is | |
669 | known to cause problems in certain sources when the respective target uses | |
670 | characters inconsistently, and thus macro parameter references may no longer | |
671 | be recognized as such (see the documentation for details). | |
fa94de6b | 672 | |
d2c5f73e NC |
673 | * Support the .f_floating, .d_floating, .g_floating and .h_floating directives |
674 | for the VAX target in order to be more compatible with the VAX MACRO | |
675 | assembler. | |
676 | ||
a05a5b64 | 677 | * New command-line option -mtune=[itanium1|itanium2] for IA64 targets. |
8c2fda1d | 678 | |
957d91c1 NC |
679 | Changes in 2.16: |
680 | ||
fffeaa5f JB |
681 | * Redefinition of macros now results in an error. |
682 | ||
a05a5b64 | 683 | * New command-line option -mhint.b=[ok|warning|error] for IA64 targets. |
91d777ee | 684 | |
a05a5b64 | 685 | * New command-line option -munwind-check=[warning|error] for IA64 |
970d6792 L |
686 | targets. |
687 | ||
f1dab70d JB |
688 | * The IA64 port now uses automatic dependency violation removal as its default |
689 | mode. | |
690 | ||
7499d566 NC |
691 | * Port to MAXQ processor contributed by HCL Tech. |
692 | ||
7ed4c4c5 NC |
693 | * Added support for generating unwind tables for ARM ELF targets. |
694 | ||
a05a5b64 | 695 | * Add a -g command-line option to generate debug information in the target's |
329e276d NC |
696 | preferred debug format. |
697 | ||
1fe1f39c NC |
698 | * Support for the crx-elf target added. |
699 | ||
1a320fbb | 700 | * Support for the sh-symbianelf target added. |
1fe1f39c | 701 | |
0503b355 BF |
702 | * Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations |
703 | on pe[i]-i386; required for this target's DWARF 2 support. | |
704 | ||
6b6e92f4 NC |
705 | * Support for Motorola MCF521x/5249/547x/548x added. |
706 | ||
fd99574b NC |
707 | * Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC |
708 | instrucitons. | |
709 | ||
a05a5b64 | 710 | * New command-line option -mno-shared for MIPS ELF targets. |
aa6975fb | 711 | |
a05a5b64 | 712 | * New command-line option --alternate and pseudo-ops .altmacro and .noaltmacro |
caa32fe5 NC |
713 | added to enter (and leave) alternate macro syntax mode. |
714 | ||
0477af35 NC |
715 | Changes in 2.15: |
716 | ||
7a7f4e42 CD |
717 | * The MIPS -membedded-pic option (Embedded-PIC code generation) is |
718 | deprecated and will be removed in a future release. | |
719 | ||
6edf0760 NC |
720 | * Added PIC m32r Linux (ELF) and support to M32R assembler. |
721 | ||
09d92015 MM |
722 | * Added support for ARM V6. |
723 | ||
88da98f3 MS |
724 | * Added support for sh4a and variants. |
725 | ||
eb764db8 NC |
726 | * Support for Renesas M32R2 added. |
727 | ||
88da98f3 MS |
728 | * Limited support for Mapping Symbols as specified in the ARM ELF |
729 | specification has been added to the arm assembler. | |
ed769ec1 | 730 | |
0bbf2aa4 NC |
731 | * On ARM architectures, added a new gas directive ".unreq" that undoes |
732 | definitions created by ".req". | |
733 | ||
3e602632 NC |
734 | * Support for Motorola ColdFire MCF528x added. |
735 | ||
05da4302 NC |
736 | * Added --gstabs+ switch to enable the generation of STABS debug format |
737 | information with GNU extensions. | |
fa94de6b | 738 | |
6a265366 CD |
739 | * Added support for MIPS64 Release 2. |
740 | ||
8ad30312 NC |
741 | * Added support for v850e1. |
742 | ||
12b55ccc L |
743 | * Added -n switch for x86 assembler. By default, x86 GAS replaces |
744 | multiple nop instructions used for alignment within code sections | |
745 | with multi-byte nop instructions such as leal 0(%esi,1),%esi. This | |
746 | switch disables the optimization. | |
747 | ||
78849248 ILT |
748 | * Removed -n option from MIPS assembler. It was not useful, and confused the |
749 | existing -non_shared option. | |
750 | ||
43c58ae6 CD |
751 | Changes in 2.14: |
752 | ||
69be0a2b CD |
753 | * Added support for MIPS32 Release 2. |
754 | ||
e8fd7476 NC |
755 | * Added support for Xtensa architecture. |
756 | ||
e16bb312 NC |
757 | * Support for Intel's iWMMXt processor (an ARM variant) added. |
758 | ||
cce4814f NC |
759 | * An assembler test generator has been contributed and an example file that |
760 | uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c). | |
fa94de6b | 761 | |
5177500f NC |
762 | * Support for SH2E added. |
763 | ||
fea17916 NC |
764 | * GASP has now been removed. |
765 | ||
004d9caf NC |
766 | * Support for Texas Instruments TMS320C4x and TMS320C3x series of |
767 | DSP's contributed by Michael Hayes and Svein E. Seldal. | |
fa94de6b | 768 | |
a40cbfa3 NC |
769 | * Support for the Ubicom IP2xxx microcontroller added. |
770 | ||
2cbb2eef NC |
771 | Changes in 2.13: |
772 | ||
a40cbfa3 NC |
773 | * Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400 |
774 | and FR500 included. | |
0ebb9a87 | 775 | |
a40cbfa3 | 776 | * Support for DLX processor added. |
52216602 | 777 | |
a40cbfa3 NC |
778 | * GASP has now been deprecated and will be removed in a future release. Use |
779 | the macro facilities in GAS instead. | |
3f965e60 | 780 | |
a40cbfa3 NC |
781 | * GASP now correctly parses floating point numbers. Unless the base is |
782 | explicitly specified, they are interpreted as decimal numbers regardless of | |
783 | the currently specified base. | |
1ac57253 | 784 | |
9a66911f NC |
785 | Changes in 2.12: |
786 | ||
a40cbfa3 | 787 | * Support for Don Knuth's MMIX, by Hans-Peter Nilsson. |
49fda6c8 | 788 | |
a40cbfa3 | 789 | * Support for the OpenRISC 32-bit embedded processor by OpenCores. |
3b16e843 | 790 | |
fa94de6b RM |
791 | * The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for |
792 | specifying the target instruction set. The old method of specifying the | |
a40cbfa3 NC |
793 | target processor has been deprecated, but is still accepted for |
794 | compatibility. | |
03b1477f | 795 | |
a40cbfa3 NC |
796 | * Support for the VFP floating-point instruction set has been added to |
797 | the ARM assembler. | |
252b5132 | 798 | |
a40cbfa3 NC |
799 | * New psuedo op: .incbin to include a set of binary data at a given point |
800 | in the assembly. Contributed by Anders Norlander. | |
7e005732 | 801 | |
a40cbfa3 NC |
802 | * The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated |
803 | but still works for compatability. | |
ec68c924 | 804 | |
fa94de6b | 805 | * The MIPS assembler no longer issues a warning by default when it |
a05a5b64 | 806 | generates a nop instruction from a macro. The new command-line option |
a40cbfa3 | 807 | -n will turn on the warning. |
63486801 | 808 | |
2dac7317 JW |
809 | Changes in 2.11: |
810 | ||
500800ca NC |
811 | * Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff. |
812 | ||
a40cbfa3 | 813 | * x86 gas now supports the full Pentium4 instruction set. |
a167610d | 814 | |
a40cbfa3 | 815 | * Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs. |
c0d8940f | 816 | |
a40cbfa3 | 817 | * Support for Motorola 68HC11 and 68HC12. |
df86943d | 818 | |
a40cbfa3 | 819 | * Support for Texas Instruments TMS320C54x (tic54x). |
39bec121 | 820 | |
a40cbfa3 | 821 | * Support for IA-64. |
2dac7317 | 822 | |
a40cbfa3 | 823 | * Support for i860, by Jason Eckhardt. |
22b36938 | 824 | |
a40cbfa3 | 825 | * Support for CRIS (Axis Communications ETRAX series). |
5bcac8a4 | 826 | |
a40cbfa3 | 827 | * x86 gas has a new .arch pseudo op to specify the target CPU architecture. |
a38cf1db | 828 | |
a05a5b64 | 829 | * x86 gas -q command-line option quietens warnings about register size changes |
a40cbfa3 NC |
830 | due to suffix, indirect jmp/call without `*', stand-alone prefixes, and |
831 | translating various deprecated floating point instructions. | |
a38cf1db | 832 | |
252b5132 RH |
833 | Changes in 2.10: |
834 | ||
a40cbfa3 NC |
835 | * Support for the ARM msr instruction was changed to only allow an immediate |
836 | operand when altering the flags field. | |
d14442f4 | 837 | |
a40cbfa3 | 838 | * Support for ATMEL AVR. |
adde6300 | 839 | |
a40cbfa3 | 840 | * Support for IBM 370 ELF. Somewhat experimental. |
b5ebe70e | 841 | |
a40cbfa3 | 842 | * Support for numbers with suffixes. |
3fd9f047 | 843 | |
a40cbfa3 | 844 | * Added support for breaking to the end of repeat loops. |
6a6987a9 | 845 | |
a40cbfa3 | 846 | * Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL). |
6a6987a9 | 847 | |
a40cbfa3 | 848 | * New .elseif pseudo-op added. |
3fd9f047 | 849 | |
a40cbfa3 | 850 | * New --fatal-warnings option. |
1f776aa5 | 851 | |
a40cbfa3 | 852 | * picoJava architecture support added. |
252b5132 | 853 | |
a40cbfa3 | 854 | * Motorola MCore 210 processor support added. |
041dd5a9 | 855 | |
fa94de6b | 856 | * A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386 |
a40cbfa3 | 857 | assembly programs with intel syntax. |
252b5132 | 858 | |
a40cbfa3 | 859 | * New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code. |
252b5132 | 860 | |
a40cbfa3 | 861 | * Added -gdwarf2 option to generate DWARF 2 debugging information. |
041dd5a9 | 862 | |
a40cbfa3 | 863 | * Full 16-bit mode support for i386. |
252b5132 | 864 | |
fa94de6b | 865 | * Greatly improved instruction operand checking for i386. This change will |
a40cbfa3 NC |
866 | produce errors or warnings on incorrect assembly code that previous versions |
867 | of gas accepted. If you get unexpected messages from code that worked with | |
868 | older versions of gas, please double check the code before reporting a bug. | |
252b5132 | 869 | |
a40cbfa3 | 870 | * Weak symbol support added for COFF targets. |
252b5132 | 871 | |
a40cbfa3 | 872 | * Mitsubishi D30V support added. |
252b5132 | 873 | |
a40cbfa3 | 874 | * Texas Instruments c80 (tms320c80) support added. |
252b5132 | 875 | |
a40cbfa3 | 876 | * i960 ELF support added. |
bedf545c | 877 | |
a40cbfa3 | 878 | * ARM ELF support added. |
a057431b | 879 | |
252b5132 RH |
880 | Changes in 2.9: |
881 | ||
a40cbfa3 | 882 | * Texas Instruments c30 (tms320c30) support added. |
252b5132 | 883 | |
fa94de6b | 884 | * The assembler now optimizes the exception frame information generated by egcs |
a40cbfa3 | 885 | and gcc 2.8. The new --traditional-format option disables this optimization. |
252b5132 | 886 | |
a40cbfa3 | 887 | * Added --gstabs option to generate stabs debugging information. |
252b5132 | 888 | |
fa94de6b | 889 | * The -a option takes a new suboption, m (e.g., -alm) to expand macros in a |
a40cbfa3 | 890 | listing. |
252b5132 | 891 | |
a40cbfa3 | 892 | * Added -MD option to print dependencies. |
252b5132 RH |
893 | |
894 | Changes in 2.8: | |
895 | ||
a40cbfa3 | 896 | * BeOS support added. |
252b5132 | 897 | |
a40cbfa3 | 898 | * MIPS16 support added. |
252b5132 | 899 | |
a40cbfa3 | 900 | * Motorola ColdFire 5200 support added (configure for m68k and use -m5200). |
252b5132 | 901 | |
a40cbfa3 | 902 | * Alpha/VMS support added. |
252b5132 | 903 | |
a40cbfa3 NC |
904 | * m68k options --base-size-default-16, --base-size-default-32, |
905 | --disp-size-default-16, and --disp-size-default-32 added. | |
252b5132 | 906 | |
a40cbfa3 NC |
907 | * The alignment directives now take an optional third argument, which is the |
908 | maximum number of bytes to skip. If doing the alignment would require | |
909 | skipping more than the given number of bytes, the alignment is not done at | |
910 | all. | |
252b5132 | 911 | |
a40cbfa3 | 912 | * The ELF assembler has a new pseudo-op, .symver, used for symbol versioning. |
252b5132 | 913 | |
a40cbfa3 NC |
914 | * The -a option takes a new suboption, c (e.g., -alc), to skip false |
915 | conditionals in listings. | |
252b5132 | 916 | |
a40cbfa3 NC |
917 | * Added new pseudo-op, .equiv; it's like .equ, except that it is an error if |
918 | the symbol is already defined. | |
252b5132 RH |
919 | |
920 | Changes in 2.7: | |
921 | ||
a40cbfa3 NC |
922 | * The PowerPC assembler now allows the use of symbolic register names (r0, |
923 | etc.) if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) | |
924 | can be used any time. PowerPC 860 move to/from SPR instructions have been | |
925 | added. | |
252b5132 | 926 | |
a40cbfa3 | 927 | * Alpha Linux (ELF) support added. |
252b5132 | 928 | |
a40cbfa3 | 929 | * PowerPC ELF support added. |
252b5132 | 930 | |
a40cbfa3 | 931 | * m68k Linux (ELF) support added. |
252b5132 | 932 | |
a40cbfa3 | 933 | * i960 Hx/Jx support added. |
252b5132 | 934 | |
a40cbfa3 | 935 | * i386/PowerPC gnu-win32 support added. |
252b5132 | 936 | |
a40cbfa3 NC |
937 | * SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the |
938 | default is to build COFF-only support. To get a set of tools that generate | |
fa94de6b | 939 | ELF (they'll understand both COFF and ELF), you must configure with |
a40cbfa3 | 940 | target=i386-unknown-sco3.2v5elf. |
252b5132 | 941 | |
a40cbfa3 | 942 | * m88k-motorola-sysv3* support added. |
252b5132 RH |
943 | |
944 | Changes in 2.6: | |
945 | ||
a40cbfa3 | 946 | * Gas now directly supports macros, without requiring GASP. |
252b5132 | 947 | |
a40cbfa3 NC |
948 | * Gas now has an MRI assembler compatibility mode. Use -M or --mri to select |
949 | MRI mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the | |
950 | ``.mri 0'' is seen; this can be convenient for inline assembler code. | |
252b5132 | 951 | |
a40cbfa3 | 952 | * Added --defsym SYM=VALUE option. |
252b5132 | 953 | |
a40cbfa3 | 954 | * Added -mips4 support to MIPS assembler. |
252b5132 | 955 | |
a40cbfa3 | 956 | * Added PIC support to Solaris and SPARC SunOS 4 assembler. |
252b5132 RH |
957 | |
958 | Changes in 2.4: | |
959 | ||
a40cbfa3 | 960 | * Converted this directory to use an autoconf-generated configure script. |
252b5132 | 961 | |
a40cbfa3 | 962 | * ARM support, from Richard Earnshaw. |
252b5132 | 963 | |
a40cbfa3 NC |
964 | * Updated VMS support, from Pat Rankin, including considerably improved |
965 | debugging support. | |
252b5132 | 966 | |
a40cbfa3 | 967 | * Support for the control registers in the 68060. |
252b5132 | 968 | |
a40cbfa3 | 969 | * Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to |
fa94de6b RM |
970 | provide for possible future gcc changes, for targets where gas provides some |
971 | features not available in the native assembler. If the native assembler is | |
a40cbfa3 | 972 | used, it should become obvious pretty quickly what the problem is. |
252b5132 | 973 | |
a40cbfa3 | 974 | * Usage message is available with "--help". |
252b5132 | 975 | |
fa94de6b | 976 | * The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3 |
a40cbfa3 | 977 | also, but didn't get into the NEWS file.) |
252b5132 | 978 | |
a40cbfa3 | 979 | * Weak symbol support for a.out. |
252b5132 | 980 | |
fa94de6b | 981 | * A bug in the listing code which could cause an infinite loop has been fixed. |
a40cbfa3 | 982 | Bugs in listings when generating a COFF object file have also been fixed. |
252b5132 | 983 | |
a40cbfa3 NC |
984 | * Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by |
985 | Paul Kranenburg. | |
252b5132 | 986 | |
a40cbfa3 NC |
987 | * Improved Alpha support. Immediate constants can have a much larger range |
988 | now. Support for the 21164 has been contributed by Digital. | |
252b5132 | 989 | |
a40cbfa3 | 990 | * Updated ns32k (pc532-mach, netbsd532) support from Ian Dall. |
252b5132 RH |
991 | |
992 | Changes in 2.3: | |
993 | ||
a40cbfa3 | 994 | * Mach i386 support, by David Mackenzie and Ken Raeburn. |
252b5132 | 995 | |
a40cbfa3 | 996 | * RS/6000 and PowerPC support by Ian Taylor. |
252b5132 | 997 | |
a40cbfa3 NC |
998 | * VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit, |
999 | based on mail received from various people. The `-h#' option should work | |
1000 | again too. | |
252b5132 | 1001 | |
a40cbfa3 | 1002 | * HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work |
fa94de6b | 1003 | with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special |
a40cbfa3 NC |
1004 | version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve |
1005 | this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu | |
1006 | in the "dist" directory. | |
252b5132 | 1007 | |
a40cbfa3 NC |
1008 | * Vax support in gas fixed for BSD, so it builds and seems to run a couple |
1009 | simple tests okay. I haven't put it through extensive testing. (GNU make is | |
1010 | currently required for BSD 4.3 builds.) | |
252b5132 | 1011 | |
fa94de6b | 1012 | * Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is |
a40cbfa3 NC |
1013 | based on code donated by CMU, which used an a.out-based format. I'm afraid |
1014 | the alpha-a.out support is pretty badly mangled, and much of it removed; | |
1015 | making it work will require rewriting it as BFD support for the format anyways. | |
252b5132 | 1016 | |
a40cbfa3 | 1017 | * Irix 5 support. |
252b5132 | 1018 | |
fa94de6b | 1019 | * The test suites have been fixed up a bit, so that they should work with a |
a40cbfa3 | 1020 | couple different versions of expect and dejagnu. |
252b5132 | 1021 | |
fa94de6b RM |
1022 | * Symbols' values are now handled internally as expressions, permitting more |
1023 | flexibility in evaluating them in some cases. Some details of relocation | |
a40cbfa3 NC |
1024 | handling have also changed, and simple constant pool management has been |
1025 | added, to make the Alpha port easier. | |
252b5132 | 1026 | |
a40cbfa3 NC |
1027 | * New option "--statistics" for printing out program run times. This is |
1028 | intended to be used with the gcc "-Q" option, which prints out times spent in | |
1029 | various phases of compilation. (You should be able to get all of them | |
1030 | printed out with "gcc -Q -Wa,--statistics", I think.) | |
252b5132 RH |
1031 | |
1032 | Changes in 2.2: | |
1033 | ||
a40cbfa3 | 1034 | * RS/6000 AIX and MIPS SGI Irix 5 support has been added. |
252b5132 | 1035 | |
fa94de6b RM |
1036 | * Configurations that are still in development (and therefore are convenient to |
1037 | have listed in configure.in) still get rejected without a minor change to | |
a40cbfa3 NC |
1038 | gas/Makefile.in, so people not doing development work shouldn't get the |
1039 | impression that support for such configurations is actually believed to be | |
1040 | reliable. | |
252b5132 | 1041 | |
fa94de6b | 1042 | * The program name (usually "as") is printed when a fatal error message is |
a40cbfa3 NC |
1043 | displayed. This should prevent some confusion about the source of occasional |
1044 | messages about "internal errors". | |
252b5132 | 1045 | |
fa94de6b | 1046 | * ELF support is falling into place. Support for the 386 should be working. |
a40cbfa3 | 1047 | Support for SPARC Solaris is in. HPPA support from Utah is being integrated. |
252b5132 | 1048 | |
a40cbfa3 NC |
1049 | * Symbol values are maintained as expressions instead of being immediately |
1050 | boiled down to add-symbol, sub-symbol, and constant. This permits slightly | |
1051 | more complex calculations involving symbols whose values are not alreadey | |
1052 | known. | |
252b5132 | 1053 | |
a40cbfa3 | 1054 | * DBX-style debugging info ("stabs") is now supported for COFF formats. |
fa94de6b RM |
1055 | If any stabs directives are seen in the source, GAS will create two new |
1056 | sections: a ".stab" and a ".stabstr" section. The format of the .stab | |
a40cbfa3 NC |
1057 | section is nearly identical to the a.out symbol format, and .stabstr is |
1058 | its string table. For this to be useful, you must have configured GCC | |
1059 | to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB | |
1060 | that can use the stab sections (4.11 or later). | |
252b5132 | 1061 | |
fa94de6b | 1062 | * LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS |
a40cbfa3 | 1063 | support is in progress. |
252b5132 RH |
1064 | |
1065 | Changes in 2.1: | |
1066 | ||
fa94de6b | 1067 | * Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been |
a40cbfa3 | 1068 | incorporated, but not well tested yet. |
252b5132 | 1069 | |
fa94de6b | 1070 | * Altered the opcode table split for m68k; it should require less VM to compile |
a40cbfa3 | 1071 | with gcc now. |
252b5132 | 1072 | |
a40cbfa3 NC |
1073 | * Some minor adjustments to add (Convergent Technologies') Miniframe support, |
1074 | suggested by Ronald Cole. | |
252b5132 | 1075 | |
a40cbfa3 NC |
1076 | * HPPA support (running OSF only, not HPUX) has been contributed by Utah. This |
1077 | includes improved ELF support, which I've started adapting for SPARC Solaris | |
1078 | 2.x. Integration isn't completely, so it probably won't work. | |
252b5132 | 1079 | |
a40cbfa3 | 1080 | * HP9000/300 support, donated by HP, has been merged in. |
252b5132 | 1081 | |
a40cbfa3 | 1082 | * Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support. |
252b5132 | 1083 | |
a40cbfa3 | 1084 | * Better error messages for unsupported configurations (e.g., hppa-hpux). |
252b5132 | 1085 | |
a40cbfa3 | 1086 | * Test suite framework is starting to become reasonable. |
252b5132 RH |
1087 | |
1088 | Changes in 2.0: | |
1089 | ||
a40cbfa3 | 1090 | * Mostly bug fixes. |
252b5132 | 1091 | |
a40cbfa3 | 1092 | * Some more merging of BFD and ELF code, but ELF still doesn't work. |
252b5132 RH |
1093 | |
1094 | Changes in 1.94: | |
1095 | ||
a40cbfa3 NC |
1096 | * BFD merge is partly done. Adventurous souls may try giving configure the |
1097 | "--with-bfd-assembler" option. Currently, ELF format requires it, a.out | |
1098 | format accepts it; SPARC CPU accepts it. It's the default only for OS "elf" | |
1099 | or "solaris". (ELF isn't really supported yet. It needs work. I've got | |
1100 | some code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not | |
1101 | fully merged yet.) | |
252b5132 | 1102 | |
a40cbfa3 NC |
1103 | * The 68K opcode table has been split in half. It should now compile under gcc |
1104 | without consuming ridiculous amounts of memory. | |
252b5132 | 1105 | |
a40cbfa3 NC |
1106 | * A couple data structures have been reduced in size. This should result in |
1107 | saving a little bit of space at runtime. | |
252b5132 | 1108 | |
a40cbfa3 NC |
1109 | * Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF |
1110 | code provided ROSE format support, which I haven't merged in yet. (I can | |
1111 | make it available, if anyone wants to try it out.) Ralph's code, for BSD | |
1112 | 4.4, supports a.out format. We don't have ECOFF support in just yet; it's | |
1113 | coming. | |
252b5132 | 1114 | |
a40cbfa3 | 1115 | * Support for the Hitachi H8/500 has been added. |
252b5132 | 1116 | |
a40cbfa3 NC |
1117 | * VMS host and target support should be working now, thanks chiefly to Eric |
1118 | Youngdale. | |
252b5132 RH |
1119 | |
1120 | Changes in 1.93.01: | |
1121 | ||
a40cbfa3 | 1122 | * For m68k, support for more processors has been added: 68040, CPU32, 68851. |
252b5132 | 1123 | |
a40cbfa3 | 1124 | * For i386, .align is now power-of-two; was number-of-bytes. |
252b5132 | 1125 | |
a40cbfa3 NC |
1126 | * For m68k, "%" is now accepted before register names. For COFF format, which |
1127 | doesn't use underscore prefixes for C labels, it is required, so variable "a0" | |
1128 | can be distinguished from the register. | |
252b5132 | 1129 | |
a40cbfa3 NC |
1130 | * Last public release was 1.38. Lots of configuration changes since then, lots |
1131 | of new CPUs and formats, lots of bugs fixed. | |
252b5132 RH |
1132 | |
1133 | \f | |
fd67aa11 | 1134 | Copyright (C) 2012-2024 Free Software Foundation, Inc. |
5bf135a7 NC |
1135 | |
1136 | Copying and distribution of this file, with or without modification, | |
1137 | are permitted in any medium without royalty provided the copyright | |
1138 | notice and this notice are preserved. | |
1139 | ||
252b5132 RH |
1140 | Local variables: |
1141 | fill-column: 79 | |
1142 | End: |