[PATCH][ARM][GAS]: Assembler support to interpret MVE VMOV instruction correctly.
[deliverable/binutils-gdb.git] / gas / NEWS
CommitLineData
252b5132 1-*- text -*-
96a84ea3 2
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3* Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE)
4 instructions.
5
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6* For MIPS, Add -m[no-]fix-loongson3-llsc option to fix (or not) Loongson3
7 LLSC Errata. Add a --enable-mips-fix-loongson3-llsc=[yes|no] configure
8 time option to set the default behavior. Set the default if the configure
9 option is not used to "no".
6f2117ba 10
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11* Add support for the Arm Cortex-A76AE, Cortex-A77 and Cortex-M35P
12 processors.
13
14* Add support for the AArch64 Cortex-A34, Cortex-A65, Cortex-A65AE,
15 Cortex-A76AE, and Cortex-A77 processors.
16
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17* Add .float16 directive for both Arm and AArch64 to allow encoding of 16-bit
18 floating point literals. Add .float16_format directive and
19 -mfp16-format=[ieee|alternative] option for Arm to control the format of the
20 encoding.
21
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22Changes in 2.32:
23
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24* Add -mvexwig=[0|1] option to x86 assembler to control encoding of
25 VEX.W-ignored (WIG) VEX instructions.
26
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27* Add -mx86-used-note=[yes|no] option to generate (or not) x86 GNU property
28 notes. Add a --enable-x86-used-note configure time option to set the
29 default behavior. Set the default if the configure option is not used
30 to "no".
31
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32* Add support for the MIPS Loongson EXTensions R2 (EXT2) instructions.
33
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34* Add support for the MIPS Loongson EXTensions (EXT) instructions.
35
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36* Add support for the MIPS Loongson Content Address Memory (CAM) ASE.
37
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38* Add support for the C-SKY processor series.
39
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40* Add support for the MIPS Loongson MultiMedia extensions Instructions (MMI)
41 ASE.
42
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43Changes in 2.31:
44
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45* The ADR and ADRL pseudo-instructions supported by the ARM assembler
46 now only set the bottom bit of the address of thumb function symbols
47 if the -mthumb-interwork command line option is active.
48
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49* Add support for the MIPS Global INValidate (GINV) ASE.
50
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SE
51* Add support for the MIPS Cyclic Redudancy Check (CRC) ASE.
52
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53* Add support for the Freescale S12Z architecture.
54
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55* Add --generate-missing-build-notes=[yes|no] option to create (or not) GNU
56 Build Attribute notes if none are present in the input sources. Add a
57 --enable-generate-build-notes=[yes|no] configure time option to set the
58 default behaviour. Set the default if the configure option is not used
59 to "no".
60
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61* Remove -mold-gcc command-line option for x86 targets.
62
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63* Add -O[2|s] command-line options to x86 assembler to enable alternate
64 shorter instruction encoding.
65
8f065d3b 66* Add support for .nops directive. It is currently supported only for
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67 x86 targets.
68
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69Changes in 2.30:
70
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71* Add support for loaction views in DWARF debug line information.
72
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73Changes in 2.29:
74
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75* Add support for ELF SHF_GNU_MBIND.
76
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77* Add support for the WebAssembly file format and wasm32 ELF conversion.
78
7e0de605 79* PowerPC gas now checks that the correct register class is used in
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80 instructions. For instance, "addi %f4,%cr3,%r31" warns three times
81 that the registers are invalid.
7e0de605 82
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83* Add support for the Texas Instruments PRU processor.
84
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85* Support for the ARMv8-R architecture and Cortex-R52 processor has been
86 added to the ARM port.
ced40572 87
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88Changes in 2.28:
89
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90* Add support for the RISC-V architecture.
91
b19ea8d2 92* Add support for the ARM Cortex-M23 and Cortex-M33 processors.
ce1b0a45 93
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94Changes in 2.27:
95
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96* Default to --enable-compressed-debug-sections=gas for Linux/x86 targets.
97
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98* Add --no-pad-sections to stop the assembler from padding the end of output
99 sections up to their alignment boundary.
100
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101* Support for the ARMv8-M architecture has been added to the ARM port. Support
102 for the ARMv8-M Security and DSP Extensions has also been added to the ARM
103 port.
104
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105* ARC backend accepts .extInstruction, .extCondCode, .extAuxRegister, and
106 .extCoreRegister pseudo-ops that allow an user to define custom
107 instructions, conditional codes, auxiliary and core registers.
108
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109* Add a configure option --enable-elf-stt-common to decide whether ELF
110 assembler should generate common symbols with the STT_COMMON type by
111 default. Default to no.
112
a05a5b64 113* New command-line option --elf-stt-common= for ELF targets to control
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114 whether to generate common symbols with the STT_COMMON type.
115
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116* Add ability to set section flags and types via numeric values for ELF
117 based targets.
81c23f82 118
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119* Add a configure option --enable-x86-relax-relocations to decide whether
120 x86 assembler should generate relax relocations by default. Default to
121 yes, except for x86 Solaris targets older than Solaris 12.
122
a05a5b64 123* New command-line option -mrelax-relocations= for x86 target to control
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124 whether to generate relax relocations.
125
a05a5b64 126* New command-line option -mfence-as-lock-add=yes for x86 target to encode
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127 lfence, mfence and sfence as "lock addl $0x0, (%[re]sp)".
128
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129* Add assembly-time relaxation option for ARC cpus.
130
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131* Add --with-cpu=TYPE configure option for ARC gas. This allows the default
132 cpu type to be adjusted at configure time.
133
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134Changes in 2.26:
135
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136* Add a configure option --enable-compressed-debug-sections={all,gas} to
137 decide whether DWARF debug sections should be compressed by default.
e12fe555 138
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139* Add support for the ARC EM/HS, and ARC600/700 architectures. Remove
140 assembler support for Argonaut RISC architectures.
141
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142* Symbol and label names can now be enclosed in double quotes (") which allows
143 them to contain characters that are not part of valid symbol names in high
144 level languages.
145
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146* Added the correctly spelled -march=armv6kz, for ARMv6KZ support. The
147 previous spelling, -march=armv6zk, is still accepted.
148
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149* Support for the ARMv8.1 architecture has been added to the Aarch64 port.
150 Support for the individual ARMv8.1 Adv.SIMD, LOR and PAN architecture
151 extensions has also been added to the Aarch64 port.
152
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153* Support for the ARMv8.1 architecture has been added to the ARM port. Support
154 for the individual ARMv8.1 Adv.SIMD and PAN architecture extensions has also
155 been added to the ARM port.
156
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157* Extend --compress-debug-sections option to support
158 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF
159 targets.
160
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161* --compress-debug-sections is turned on for Linux/x86 by default.
162
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163Changes in 2.25:
164
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165* Add support for the AVR Tiny microcontrollers.
166
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167* Replace support for openrisc and or32 with support for or1k.
168
2e6976a8 169* Enhanced the ARM port to accept the assembler output from the CodeComposer
a05a5b64 170 Studio tool. Support is enabled via the new command-line option -mccs.
2e6976a8 171
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172* Add support for the Andes NDS32.
173
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174Changes in 2.24:
175
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176* Add support for the Texas Instruments MSP430X processor.
177
a05a5b64 178* Add -gdwarf-sections command-line option to enable per-code-section
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179 generation of DWARF .debug_line sections.
180
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181* Add support for Altera Nios II.
182
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183* Add support for the Imagination Technologies Meta processor.
184
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185* Add support for the v850e3v5.
186
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187* Remove assembler support for MIPS ECOFF targets.
188
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189Changes in 2.23:
190
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191* Add support for the 64-bit ARM architecture: AArch64.
192
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193* Add support for S12X processor.
194
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195* Add support for the VLE extension to the PowerPC architecture.
196
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197* Add support for the Freescale XGATE architecture.
198
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199* Add support for .bundle_align_mode, .bundle_lock, and .bundle_unlock
200 directives. These are currently available only for x86 and ARM targets.
201
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202* Add support for the Renesas RL78 architecture.
203
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NC
204* Add support for the Adapteva EPIPHANY architecture.
205
fe13e45b 206* For x86, allow 'rep bsf', 'rep bsr', and 'rep ret' syntax.
29c048b6 207
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208Changes in 2.22:
209
69f56ae1 210* Add support for the Tilera TILEPro and TILE-Gx architectures.
44f45767 211
90b3661c 212Changes in 2.21:
44f45767 213
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214* Gas no longer requires doubling of ampersands in macros.
215
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216* Add support for the TMS320C6000 (TI C6X) processor family.
217
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218* GAS now understands an extended syntax in the .section directive flags
219 for COFF targets that allows the section's alignment to be specified. This
220 feature has also been backported to the 2.20 release series, starting with
221 2.20.1.
222
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223* Add support for the Renesas RX processor.
224
a05a5b64 225* New command-line option, --compress-debug-sections, which requests
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226 compression of DWARF debug information sections in the relocatable output
227 file. Compressed debug sections are supported by readelf, objdump, and
228 gold, but not currently by Gnu ld.
229
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230Changes in 2.20:
231
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232* Added support for v850e2 and v850e2v3.
233
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234* GNU/Linux targets now supports "gnu_unique_object" as a value in the .type
235 pseudo op. It marks the symbol as being globally unique in the entire
236 process.
237
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238* ARM assembler now supports .inst[.nw] pseudo-ops to insert opcodes specified
239 in binary rather than text.
6e33da12 240
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241* Add support for common symbol alignment to PE formats.
242
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243* Add support for the new discriminator column in the DWARF line table,
244 with a discriminator operand for the .loc directive.
245
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246* Add support for Sunplus score architecture.
247
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248* The .type pseudo-op now accepts a type of STT_GNU_IFUNC which can be used to
249 indicate that if the symbol is the target of a relocation, its value should
250 not be use. Instead the function should be invoked and its result used as
251 the value.
fa94de6b 252
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253* Add support for Lattice Mico32 (lm32) architecture.
254
fa94de6b 255* Add support for Xilinx MicroBlaze architecture.
caa03924 256
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257Changes in 2.19:
258
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259* New pseudo op .cfi_val_encoded_addr, to record constant addresses in unwind
260 tables without runtime relocation.
261
a05a5b64 262* New command-line option, -h-tick-hex, for sh, m32c, and h8/300 targets, which
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263 adds compatibility with H'00 style hex constants.
264
a05a5b64 265* New command-line option, -msse-check=[none|error|warning], for x86
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266 targets.
267
a05a5b64 268* New sub-option added to the assembler's -a command-line switch to
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269 generate a listing output. The 'g' sub-option will insert into the listing
270 various information about the assembly, such as assembler version, the
a05a5b64 271 command-line options used, and a time stamp.
83f10cb2 272
a05a5b64 273* New command-line option -msse2avx for x86 target to encode SSE
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274 instructions with VEX prefix.
275
f1f8f695 276* Add Intel XSAVE, EPT, MOVBE, AES, PCLMUL, AVX/FMA support for x86 target.
c0f3af97 277
a05a5b64 278* New command-line options, -march=CPU[,+EXTENSION...], -mtune=CPU,
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279 -mmnemonic=[att|intel], -msyntax=[att|intel], -mindex-reg,
280 -mnaked-reg and -mold-gcc, for x86 targets.
281
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282* Support for generating wide character strings has been added via the new
283 pseudo ops: .string16, .string32 and .string64.
284
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285* Support for SSE5 has been added to the i386 port.
286
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287Changes in 2.18:
288
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289* The GAS sources are now released under the GPLv3.
290
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291* Support for the National Semiconductor CR16 target has been added.
292
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293* Added gas .reloc pseudo. This is a low-level interface for creating
294 relocations.
295
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296* Add support for x86_64 PE+ target.
297
1c0d3aa6 298* Add support for Score target.
83518699 299
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300Changes in 2.17:
301
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302* Support for the Infineon XC16X has been added by KPIT Cummins Infosystems.
303
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304* Support for ms2 architecture has been added.
305
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306* Support for the Z80 processor family has been added.
307
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308* Add support for the "@<file>" syntax to the command line, so that extra
309 switches can be read from <file>.
310
a05a5b64 311* The SH target supports a new command-line switch --enable-reg-prefix which,
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312 if enabled, will allow register names to be optionally prefixed with a $
313 character. This allows register names to be distinguished from label names.
fa94de6b 314
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315* Macros with a variable number of arguments are now supported. See the
316 documentation for how this works.
317
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318* Added --reduce-memory-overheads switch to reduce the size of the hash
319 tables used, at the expense of longer assembly times, and
320 --hash-size=<NUMBER> to set the size of the hash tables used by gas.
321
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322* Macro names and macro parameter names can now be any identifier that would
323 also be legal as a symbol elsewhere. For macro parameter names, this is
324 known to cause problems in certain sources when the respective target uses
325 characters inconsistently, and thus macro parameter references may no longer
326 be recognized as such (see the documentation for details).
fa94de6b 327
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328* Support the .f_floating, .d_floating, .g_floating and .h_floating directives
329 for the VAX target in order to be more compatible with the VAX MACRO
330 assembler.
331
a05a5b64 332* New command-line option -mtune=[itanium1|itanium2] for IA64 targets.
8c2fda1d 333
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334Changes in 2.16:
335
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336* Redefinition of macros now results in an error.
337
a05a5b64 338* New command-line option -mhint.b=[ok|warning|error] for IA64 targets.
91d777ee 339
a05a5b64 340* New command-line option -munwind-check=[warning|error] for IA64
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341 targets.
342
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343* The IA64 port now uses automatic dependency violation removal as its default
344 mode.
345
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346* Port to MAXQ processor contributed by HCL Tech.
347
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348* Added support for generating unwind tables for ARM ELF targets.
349
a05a5b64 350* Add a -g command-line option to generate debug information in the target's
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351 preferred debug format.
352
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353* Support for the crx-elf target added.
354
1a320fbb 355* Support for the sh-symbianelf target added.
1fe1f39c 356
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357* Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations
358 on pe[i]-i386; required for this target's DWARF 2 support.
359
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360* Support for Motorola MCF521x/5249/547x/548x added.
361
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362* Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC
363 instrucitons.
364
a05a5b64 365* New command-line option -mno-shared for MIPS ELF targets.
aa6975fb 366
a05a5b64 367* New command-line option --alternate and pseudo-ops .altmacro and .noaltmacro
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368 added to enter (and leave) alternate macro syntax mode.
369
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370Changes in 2.15:
371
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372* The MIPS -membedded-pic option (Embedded-PIC code generation) is
373 deprecated and will be removed in a future release.
374
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375* Added PIC m32r Linux (ELF) and support to M32R assembler.
376
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377* Added support for ARM V6.
378
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379* Added support for sh4a and variants.
380
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381* Support for Renesas M32R2 added.
382
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383* Limited support for Mapping Symbols as specified in the ARM ELF
384 specification has been added to the arm assembler.
ed769ec1 385
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386* On ARM architectures, added a new gas directive ".unreq" that undoes
387 definitions created by ".req".
388
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389* Support for Motorola ColdFire MCF528x added.
390
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391* Added --gstabs+ switch to enable the generation of STABS debug format
392 information with GNU extensions.
fa94de6b 393
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CD
394* Added support for MIPS64 Release 2.
395
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NC
396* Added support for v850e1.
397
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398* Added -n switch for x86 assembler. By default, x86 GAS replaces
399 multiple nop instructions used for alignment within code sections
400 with multi-byte nop instructions such as leal 0(%esi,1),%esi. This
401 switch disables the optimization.
402
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403* Removed -n option from MIPS assembler. It was not useful, and confused the
404 existing -non_shared option.
405
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CD
406Changes in 2.14:
407
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408* Added support for MIPS32 Release 2.
409
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410* Added support for Xtensa architecture.
411
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412* Support for Intel's iWMMXt processor (an ARM variant) added.
413
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414* An assembler test generator has been contributed and an example file that
415 uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c).
fa94de6b 416
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417* Support for SH2E added.
418
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419* GASP has now been removed.
420
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421* Support for Texas Instruments TMS320C4x and TMS320C3x series of
422 DSP's contributed by Michael Hayes and Svein E. Seldal.
fa94de6b 423
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424* Support for the Ubicom IP2xxx microcontroller added.
425
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426Changes in 2.13:
427
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428* Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
429 and FR500 included.
0ebb9a87 430
a40cbfa3 431* Support for DLX processor added.
52216602 432
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433* GASP has now been deprecated and will be removed in a future release. Use
434 the macro facilities in GAS instead.
3f965e60 435
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436* GASP now correctly parses floating point numbers. Unless the base is
437 explicitly specified, they are interpreted as decimal numbers regardless of
438 the currently specified base.
1ac57253 439
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440Changes in 2.12:
441
a40cbfa3 442* Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
49fda6c8 443
a40cbfa3 444* Support for the OpenRISC 32-bit embedded processor by OpenCores.
3b16e843 445
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446* The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for
447 specifying the target instruction set. The old method of specifying the
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448 target processor has been deprecated, but is still accepted for
449 compatibility.
03b1477f 450
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451* Support for the VFP floating-point instruction set has been added to
452 the ARM assembler.
252b5132 453
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NC
454* New psuedo op: .incbin to include a set of binary data at a given point
455 in the assembly. Contributed by Anders Norlander.
7e005732 456
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457* The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated
458 but still works for compatability.
ec68c924 459
fa94de6b 460* The MIPS assembler no longer issues a warning by default when it
a05a5b64 461 generates a nop instruction from a macro. The new command-line option
a40cbfa3 462 -n will turn on the warning.
63486801 463
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464Changes in 2.11:
465
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466* Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff.
467
a40cbfa3 468* x86 gas now supports the full Pentium4 instruction set.
a167610d 469
a40cbfa3 470* Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs.
c0d8940f 471
a40cbfa3 472* Support for Motorola 68HC11 and 68HC12.
df86943d 473
a40cbfa3 474* Support for Texas Instruments TMS320C54x (tic54x).
39bec121 475
a40cbfa3 476* Support for IA-64.
2dac7317 477
a40cbfa3 478* Support for i860, by Jason Eckhardt.
22b36938 479
a40cbfa3 480* Support for CRIS (Axis Communications ETRAX series).
5bcac8a4 481
a40cbfa3 482* x86 gas has a new .arch pseudo op to specify the target CPU architecture.
a38cf1db 483
a05a5b64 484* x86 gas -q command-line option quietens warnings about register size changes
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NC
485 due to suffix, indirect jmp/call without `*', stand-alone prefixes, and
486 translating various deprecated floating point instructions.
a38cf1db 487
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488Changes in 2.10:
489
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490* Support for the ARM msr instruction was changed to only allow an immediate
491 operand when altering the flags field.
d14442f4 492
a40cbfa3 493* Support for ATMEL AVR.
adde6300 494
a40cbfa3 495* Support for IBM 370 ELF. Somewhat experimental.
b5ebe70e 496
a40cbfa3 497* Support for numbers with suffixes.
3fd9f047 498
a40cbfa3 499* Added support for breaking to the end of repeat loops.
6a6987a9 500
a40cbfa3 501* Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
6a6987a9 502
a40cbfa3 503* New .elseif pseudo-op added.
3fd9f047 504
a40cbfa3 505* New --fatal-warnings option.
1f776aa5 506
a40cbfa3 507* picoJava architecture support added.
252b5132 508
a40cbfa3 509* Motorola MCore 210 processor support added.
041dd5a9 510
fa94de6b 511* A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
a40cbfa3 512 assembly programs with intel syntax.
252b5132 513
a40cbfa3 514* New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
252b5132 515
a40cbfa3 516* Added -gdwarf2 option to generate DWARF 2 debugging information.
041dd5a9 517
a40cbfa3 518* Full 16-bit mode support for i386.
252b5132 519
fa94de6b 520* Greatly improved instruction operand checking for i386. This change will
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521 produce errors or warnings on incorrect assembly code that previous versions
522 of gas accepted. If you get unexpected messages from code that worked with
523 older versions of gas, please double check the code before reporting a bug.
252b5132 524
a40cbfa3 525* Weak symbol support added for COFF targets.
252b5132 526
a40cbfa3 527* Mitsubishi D30V support added.
252b5132 528
a40cbfa3 529* Texas Instruments c80 (tms320c80) support added.
252b5132 530
a40cbfa3 531* i960 ELF support added.
bedf545c 532
a40cbfa3 533* ARM ELF support added.
a057431b 534
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535Changes in 2.9:
536
a40cbfa3 537* Texas Instruments c30 (tms320c30) support added.
252b5132 538
fa94de6b 539* The assembler now optimizes the exception frame information generated by egcs
a40cbfa3 540 and gcc 2.8. The new --traditional-format option disables this optimization.
252b5132 541
a40cbfa3 542* Added --gstabs option to generate stabs debugging information.
252b5132 543
fa94de6b 544* The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
a40cbfa3 545 listing.
252b5132 546
a40cbfa3 547* Added -MD option to print dependencies.
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548
549Changes in 2.8:
550
a40cbfa3 551* BeOS support added.
252b5132 552
a40cbfa3 553* MIPS16 support added.
252b5132 554
a40cbfa3 555* Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
252b5132 556
a40cbfa3 557* Alpha/VMS support added.
252b5132 558
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559* m68k options --base-size-default-16, --base-size-default-32,
560 --disp-size-default-16, and --disp-size-default-32 added.
252b5132 561
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562* The alignment directives now take an optional third argument, which is the
563 maximum number of bytes to skip. If doing the alignment would require
564 skipping more than the given number of bytes, the alignment is not done at
565 all.
252b5132 566
a40cbfa3 567* The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
252b5132 568
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569* The -a option takes a new suboption, c (e.g., -alc), to skip false
570 conditionals in listings.
252b5132 571
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572* Added new pseudo-op, .equiv; it's like .equ, except that it is an error if
573 the symbol is already defined.
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574
575Changes in 2.7:
576
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577* The PowerPC assembler now allows the use of symbolic register names (r0,
578 etc.) if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.)
579 can be used any time. PowerPC 860 move to/from SPR instructions have been
580 added.
252b5132 581
a40cbfa3 582* Alpha Linux (ELF) support added.
252b5132 583
a40cbfa3 584* PowerPC ELF support added.
252b5132 585
a40cbfa3 586* m68k Linux (ELF) support added.
252b5132 587
a40cbfa3 588* i960 Hx/Jx support added.
252b5132 589
a40cbfa3 590* i386/PowerPC gnu-win32 support added.
252b5132 591
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592* SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the
593 default is to build COFF-only support. To get a set of tools that generate
fa94de6b 594 ELF (they'll understand both COFF and ELF), you must configure with
a40cbfa3 595 target=i386-unknown-sco3.2v5elf.
252b5132 596
a40cbfa3 597* m88k-motorola-sysv3* support added.
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598
599Changes in 2.6:
600
a40cbfa3 601* Gas now directly supports macros, without requiring GASP.
252b5132 602
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603* Gas now has an MRI assembler compatibility mode. Use -M or --mri to select
604 MRI mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the
605 ``.mri 0'' is seen; this can be convenient for inline assembler code.
252b5132 606
a40cbfa3 607* Added --defsym SYM=VALUE option.
252b5132 608
a40cbfa3 609* Added -mips4 support to MIPS assembler.
252b5132 610
a40cbfa3 611* Added PIC support to Solaris and SPARC SunOS 4 assembler.
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612
613Changes in 2.4:
614
a40cbfa3 615* Converted this directory to use an autoconf-generated configure script.
252b5132 616
a40cbfa3 617* ARM support, from Richard Earnshaw.
252b5132 618
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619* Updated VMS support, from Pat Rankin, including considerably improved
620 debugging support.
252b5132 621
a40cbfa3 622* Support for the control registers in the 68060.
252b5132 623
a40cbfa3 624* Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
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625 provide for possible future gcc changes, for targets where gas provides some
626 features not available in the native assembler. If the native assembler is
a40cbfa3 627 used, it should become obvious pretty quickly what the problem is.
252b5132 628
a40cbfa3 629* Usage message is available with "--help".
252b5132 630
fa94de6b 631* The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3
a40cbfa3 632 also, but didn't get into the NEWS file.)
252b5132 633
a40cbfa3 634* Weak symbol support for a.out.
252b5132 635
fa94de6b 636* A bug in the listing code which could cause an infinite loop has been fixed.
a40cbfa3 637 Bugs in listings when generating a COFF object file have also been fixed.
252b5132 638
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639* Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by
640 Paul Kranenburg.
252b5132 641
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642* Improved Alpha support. Immediate constants can have a much larger range
643 now. Support for the 21164 has been contributed by Digital.
252b5132 644
a40cbfa3 645* Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
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646
647Changes in 2.3:
648
a40cbfa3 649* Mach i386 support, by David Mackenzie and Ken Raeburn.
252b5132 650
a40cbfa3 651* RS/6000 and PowerPC support by Ian Taylor.
252b5132 652
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653* VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
654 based on mail received from various people. The `-h#' option should work
655 again too.
252b5132 656
a40cbfa3 657* HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
fa94de6b 658 with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
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659 version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
660 this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
661 in the "dist" directory.
252b5132 662
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663* Vax support in gas fixed for BSD, so it builds and seems to run a couple
664 simple tests okay. I haven't put it through extensive testing. (GNU make is
665 currently required for BSD 4.3 builds.)
252b5132 666
fa94de6b 667* Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
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668 based on code donated by CMU, which used an a.out-based format. I'm afraid
669 the alpha-a.out support is pretty badly mangled, and much of it removed;
670 making it work will require rewriting it as BFD support for the format anyways.
252b5132 671
a40cbfa3 672* Irix 5 support.
252b5132 673
fa94de6b 674* The test suites have been fixed up a bit, so that they should work with a
a40cbfa3 675 couple different versions of expect and dejagnu.
252b5132 676
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677* Symbols' values are now handled internally as expressions, permitting more
678 flexibility in evaluating them in some cases. Some details of relocation
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679 handling have also changed, and simple constant pool management has been
680 added, to make the Alpha port easier.
252b5132 681
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682* New option "--statistics" for printing out program run times. This is
683 intended to be used with the gcc "-Q" option, which prints out times spent in
684 various phases of compilation. (You should be able to get all of them
685 printed out with "gcc -Q -Wa,--statistics", I think.)
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686
687Changes in 2.2:
688
a40cbfa3 689* RS/6000 AIX and MIPS SGI Irix 5 support has been added.
252b5132 690
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691* Configurations that are still in development (and therefore are convenient to
692 have listed in configure.in) still get rejected without a minor change to
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693 gas/Makefile.in, so people not doing development work shouldn't get the
694 impression that support for such configurations is actually believed to be
695 reliable.
252b5132 696
fa94de6b 697* The program name (usually "as") is printed when a fatal error message is
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698 displayed. This should prevent some confusion about the source of occasional
699 messages about "internal errors".
252b5132 700
fa94de6b 701* ELF support is falling into place. Support for the 386 should be working.
a40cbfa3 702 Support for SPARC Solaris is in. HPPA support from Utah is being integrated.
252b5132 703
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704* Symbol values are maintained as expressions instead of being immediately
705 boiled down to add-symbol, sub-symbol, and constant. This permits slightly
706 more complex calculations involving symbols whose values are not alreadey
707 known.
252b5132 708
a40cbfa3 709* DBX-style debugging info ("stabs") is now supported for COFF formats.
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710 If any stabs directives are seen in the source, GAS will create two new
711 sections: a ".stab" and a ".stabstr" section. The format of the .stab
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712 section is nearly identical to the a.out symbol format, and .stabstr is
713 its string table. For this to be useful, you must have configured GCC
714 to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
715 that can use the stab sections (4.11 or later).
252b5132 716
fa94de6b 717* LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS
a40cbfa3 718 support is in progress.
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719
720Changes in 2.1:
721
fa94de6b 722* Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
a40cbfa3 723 incorporated, but not well tested yet.
252b5132 724
fa94de6b 725* Altered the opcode table split for m68k; it should require less VM to compile
a40cbfa3 726 with gcc now.
252b5132 727
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728* Some minor adjustments to add (Convergent Technologies') Miniframe support,
729 suggested by Ronald Cole.
252b5132 730
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731* HPPA support (running OSF only, not HPUX) has been contributed by Utah. This
732 includes improved ELF support, which I've started adapting for SPARC Solaris
733 2.x. Integration isn't completely, so it probably won't work.
252b5132 734
a40cbfa3 735* HP9000/300 support, donated by HP, has been merged in.
252b5132 736
a40cbfa3 737* Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
252b5132 738
a40cbfa3 739* Better error messages for unsupported configurations (e.g., hppa-hpux).
252b5132 740
a40cbfa3 741* Test suite framework is starting to become reasonable.
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742
743Changes in 2.0:
744
a40cbfa3 745* Mostly bug fixes.
252b5132 746
a40cbfa3 747* Some more merging of BFD and ELF code, but ELF still doesn't work.
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748
749Changes in 1.94:
750
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751* BFD merge is partly done. Adventurous souls may try giving configure the
752 "--with-bfd-assembler" option. Currently, ELF format requires it, a.out
753 format accepts it; SPARC CPU accepts it. It's the default only for OS "elf"
754 or "solaris". (ELF isn't really supported yet. It needs work. I've got
755 some code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not
756 fully merged yet.)
252b5132 757
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758* The 68K opcode table has been split in half. It should now compile under gcc
759 without consuming ridiculous amounts of memory.
252b5132 760
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761* A couple data structures have been reduced in size. This should result in
762 saving a little bit of space at runtime.
252b5132 763
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764* Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF
765 code provided ROSE format support, which I haven't merged in yet. (I can
766 make it available, if anyone wants to try it out.) Ralph's code, for BSD
767 4.4, supports a.out format. We don't have ECOFF support in just yet; it's
768 coming.
252b5132 769
a40cbfa3 770* Support for the Hitachi H8/500 has been added.
252b5132 771
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772* VMS host and target support should be working now, thanks chiefly to Eric
773 Youngdale.
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774
775Changes in 1.93.01:
776
a40cbfa3 777* For m68k, support for more processors has been added: 68040, CPU32, 68851.
252b5132 778
a40cbfa3 779* For i386, .align is now power-of-two; was number-of-bytes.
252b5132 780
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781* For m68k, "%" is now accepted before register names. For COFF format, which
782 doesn't use underscore prefixes for C labels, it is required, so variable "a0"
783 can be distinguished from the register.
252b5132 784
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785* Last public release was 1.38. Lots of configuration changes since then, lots
786 of new CPUs and formats, lots of bugs fixed.
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787
788\f
82704155 789Copyright (C) 2012-2019 Free Software Foundation, Inc.
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790
791Copying and distribution of this file, with or without modification,
792are permitted in any medium without royalty provided the copyright
793notice and this notice are preserved.
794
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795Local variables:
796fill-column: 79
797End:
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