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