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