949 lines
32 KiB
Text
949 lines
32 KiB
Text
-*- text -*-
|
||
|
||
Changes in 2.39:
|
||
|
||
* Remove (rudimentary) support for the x86-64 sub-architectures Intel L1OM and
|
||
Intel K1OM.
|
||
|
||
Changes in 2.38:
|
||
|
||
* Add support for AArch64 system registers that were missing in previous
|
||
releases.
|
||
|
||
* Add support for the LoongArch instruction set.
|
||
|
||
* Add a command-line option, -muse-unaligned-vector-move, for x86 target
|
||
to encode aligned vector move as unaligned vector move.
|
||
|
||
* Add support for Cortex-R52+ for Arm.
|
||
|
||
* Add support for Cortex-A510, Cortex-A710, Cortex-X2 for AArch64.
|
||
|
||
* Add support for Cortex-A710 for Arm.
|
||
|
||
* Add support for Scalable Matrix Extension (SME) for AArch64.
|
||
|
||
* The --multibyte-handling=[allow|warn|warn-sym-only] option tells the
|
||
assembler what to when it encoutners multibyte characters in the input. The
|
||
default is to allow them. Setting the option to "warn" will generate a
|
||
warning message whenever any multibyte character is encountered. Using the
|
||
option to "warn-sym-only" will make the assembler generate a warning whenever a
|
||
symbol is defined containing multibyte characters. (References to undefined
|
||
symbols will not generate warnings).
|
||
|
||
* Outputs of .ds.x directive and .tfloat directive with hex input from
|
||
x86 assembler have been reduced from 12 bytes to 10 bytes to match the
|
||
output of .tfloat directive.
|
||
|
||
* Add support for 'armv8.8-a', 'armv9-a', 'armv9.1-a', 'armv9.2-a' and
|
||
'armv9.3-a' for -march in AArch64 GAS.
|
||
|
||
* Add support for 'armv8.7-a', 'armv8.8-a', 'armv9-a', 'armv9.1-a',
|
||
'armv9.2-a' and 'armv9.3-a' for -march in Arm GAS.
|
||
|
||
* Add support for Intel AVX512_FP16 instructions.
|
||
|
||
Changes in 2.37:
|
||
|
||
* arm-symbianelf support removed.
|
||
|
||
* Add support for Realm Management Extension (RME) for AArch64.
|
||
|
||
Changes in 2.36:
|
||
|
||
* Add support for Intel AVX VNNI instructions.
|
||
|
||
* Add support for Intel HRESET instruction.
|
||
|
||
* Add support for Intel UINTR instructions.
|
||
|
||
* Support non-absolute segment values for i386 lcall and ljmp.
|
||
|
||
* When setting the link order attribute of ELF sections, it is now possible to
|
||
use a numeric section index instead of symbol name.
|
||
|
||
* Add support for Cortex-A78, Cortex-A78AE, Cortex-A78C and Cortex-X1 for
|
||
AArch64 and ARM.
|
||
Add support for Cortex-R82, Neoverse V1, and Neoverse N2 for ARM.
|
||
|
||
* Add support for ETMv4 (Embedded Trace Macrocell), ETE (Embedded Trace
|
||
Extension), TRBE (Trace Buffer Extension)and BRBE (Branch Record Buffer
|
||
Extension) system registers for AArch64.
|
||
|
||
* Add support for Armv8-R and Armv8.7-A AArch64.
|
||
|
||
* Add support for DSB memory nXS barrier, WFET and WFIT instruction for Armv8.7
|
||
AArch64.
|
||
|
||
* Add support for +flagm feature for -march in Armv8.4 AArch64.
|
||
|
||
* Add support for +ls64 feature for -march in Armv8.7 AArch64. Add atomic
|
||
64-byte load/store instructions for this feature.
|
||
|
||
* Add support for +pauth (Pointer Authentication) feature for -march in
|
||
AArch64.
|
||
|
||
* Add support for Intel TDX instructions.
|
||
|
||
* Add support for Intel Key Locker instructions.
|
||
|
||
* Added a .nop directive to generate a single no-op instruction in a target
|
||
neutral manner. This instruction does have an effect on DWARF line number
|
||
generation, if that is active.
|
||
|
||
* Removed --reduce-memory-overheads and --hash-size as gas now
|
||
uses hash tables that can be expand and shrink automatically.
|
||
|
||
* Add {disp16} pseudo prefix to x86 assembler.
|
||
|
||
* Add support for Intel AMX instructions.
|
||
|
||
* Configure with --enable-x86-used-note by default for Linux/x86.
|
||
|
||
* Add support for the SHF_GNU_RETAIN flag, which can be applied to
|
||
sections using the 'R' flag in the .section directive.
|
||
SHF_GNU_RETAIN specifies that the section should not be garbage
|
||
collected by the linker. It requires the GNU or FreeBSD ELF OSABIs.
|
||
|
||
Changes in 2.35:
|
||
|
||
* X86 NaCl target support is removed.
|
||
|
||
* Extend .symver directive to update visibility of the original symbol
|
||
and assign one original symbol to different versioned symbols.
|
||
|
||
* Add support for Intel SERIALIZE and TSXLDTRK instructions.
|
||
|
||
* Add -mlfence-after-load=, -mlfence-before-indirect-branch= and
|
||
-mlfence-before-ret= options to x86 assembler to help mitigate
|
||
CVE-2020-0551.
|
||
|
||
* Add --gdwarf-5 option to the assembler to generate DWARF 5 debug output
|
||
(if such output is being generated). Added the ability to generate
|
||
version 5 .debug_line sections.
|
||
|
||
* Add -mbig-obj support to i386 MingW targets.
|
||
|
||
Changes in 2.34:
|
||
|
||
* Add -malign-branch-boundary=NUM, -malign-branch=TYPE[+TYPE...],
|
||
-malign-branch-prefix-size=NUM and -mbranches-within-32B-boundaries
|
||
options to x86 assembler to align branches within a fixed boundary
|
||
with segment prefixes or NOPs.
|
||
|
||
* Add support for Zilog eZ80 and Zilog Z180 CPUs.
|
||
|
||
* Add support for z80-elf target.
|
||
|
||
* Add support for relocation of each byte or word of multibyte value to Z80
|
||
targets (just use right shift to 0, 8, 16, or 24 bits or AND operation
|
||
with 0xff/0xffff mask): ld a, label >> 16 \ ld hl, label & 0xffff
|
||
|
||
* Add SDCC support for Z80 targets.
|
||
|
||
Changes in 2.33:
|
||
|
||
* Add support for the Arm Scalable Vector Extension version 2 (SVE2)
|
||
instructions.
|
||
|
||
* Add support for the Arm Transactional Memory Extension (TME)
|
||
instructions.
|
||
|
||
* Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE)
|
||
instructions.
|
||
|
||
* For MIPS, Add -m[no-]fix-loongson3-llsc option to fix (or not) Loongson3
|
||
LLSC Errata. Add a --enable-mips-fix-loongson3-llsc=[yes|no] configure
|
||
time option to set the default behavior. Set the default if the configure
|
||
option is not used to "no".
|
||
|
||
* Add support for the Arm Cortex-A76AE, Cortex-A77 and Cortex-M35P
|
||
processors.
|
||
|
||
* Add support for the AArch64 Cortex-A34, Cortex-A65, Cortex-A65AE,
|
||
Cortex-A76AE, and Cortex-A77 processors.
|
||
|
||
* Add .float16 directive for both Arm and AArch64 to allow encoding of 16-bit
|
||
floating point literals. Add .float16_format directive and
|
||
-mfp16-format=[ieee|alternative] option for Arm to control the format of the
|
||
encoding.
|
||
|
||
* Add --gdwarf-cie-version command line flag. This allows control over which
|
||
version of DWARF CIE the assembler creates.
|
||
|
||
Changes in 2.32:
|
||
|
||
* Add -mvexwig=[0|1] option to x86 assembler to control encoding of
|
||
VEX.W-ignored (WIG) VEX instructions.
|
||
|
||
* Add -mx86-used-note=[yes|no] option to generate (or not) x86 GNU property
|
||
notes. Add a --enable-x86-used-note configure time option to set the
|
||
default behavior. Set the default if the configure option is not used
|
||
to "no".
|
||
|
||
* Add support for the MIPS Loongson EXTensions R2 (EXT2) instructions.
|
||
|
||
* Add support for the MIPS Loongson EXTensions (EXT) instructions.
|
||
|
||
* Add support for the MIPS Loongson Content Address Memory (CAM) ASE.
|
||
|
||
* Add support for the C-SKY processor series.
|
||
|
||
* Add support for the MIPS Loongson MultiMedia extensions Instructions (MMI)
|
||
ASE.
|
||
|
||
Changes in 2.31:
|
||
|
||
* The ADR and ADRL pseudo-instructions supported by the ARM assembler
|
||
now only set the bottom bit of the address of thumb function symbols
|
||
if the -mthumb-interwork command line option is active.
|
||
|
||
* Add support for the MIPS Global INValidate (GINV) ASE.
|
||
|
||
* Add support for the MIPS Cyclic Redudancy Check (CRC) ASE.
|
||
|
||
* Add support for the Freescale S12Z architecture.
|
||
|
||
* Add --generate-missing-build-notes=[yes|no] option to create (or not) GNU
|
||
Build Attribute notes if none are present in the input sources. Add a
|
||
--enable-generate-build-notes=[yes|no] configure time option to set the
|
||
default behaviour. Set the default if the configure option is not used
|
||
to "no".
|
||
|
||
* Remove -mold-gcc command-line option for x86 targets.
|
||
|
||
* Add -O[2|s] command-line options to x86 assembler to enable alternate
|
||
shorter instruction encoding.
|
||
|
||
* Add support for .nops directive. It is currently supported only for
|
||
x86 targets.
|
||
|
||
Changes in 2.30:
|
||
|
||
* Add support for loaction views in DWARF debug line information.
|
||
|
||
Changes in 2.29:
|
||
|
||
* Add support for ELF SHF_GNU_MBIND.
|
||
|
||
* Add support for the WebAssembly file format and wasm32 ELF conversion.
|
||
|
||
* PowerPC gas now checks that the correct register class is used in
|
||
instructions. For instance, "addi %f4,%cr3,%r31" warns three times
|
||
that the registers are invalid.
|
||
|
||
* Add support for the Texas Instruments PRU processor.
|
||
|
||
* Support for the ARMv8-R architecture and Cortex-R52 processor has been
|
||
added to the ARM port.
|
||
|
||
Changes in 2.28:
|
||
|
||
* Add support for the RISC-V architecture.
|
||
|
||
* Add support for the ARM Cortex-M23 and Cortex-M33 processors.
|
||
|
||
Changes in 2.27:
|
||
|
||
* Default to --enable-compressed-debug-sections=gas for Linux/x86 targets.
|
||
|
||
* Add --no-pad-sections to stop the assembler from padding the end of output
|
||
sections up to their alignment boundary.
|
||
|
||
* Support for the ARMv8-M architecture has been added to the ARM port. Support
|
||
for the ARMv8-M Security and DSP Extensions has also been added to the ARM
|
||
port.
|
||
|
||
* ARC backend accepts .extInstruction, .extCondCode, .extAuxRegister, and
|
||
.extCoreRegister pseudo-ops that allow an user to define custom
|
||
instructions, conditional codes, auxiliary and core registers.
|
||
|
||
* Add a configure option --enable-elf-stt-common to decide whether ELF
|
||
assembler should generate common symbols with the STT_COMMON type by
|
||
default. Default to no.
|
||
|
||
* New command-line option --elf-stt-common= for ELF targets to control
|
||
whether to generate common symbols with the STT_COMMON type.
|
||
|
||
* Add ability to set section flags and types via numeric values for ELF
|
||
based targets.
|
||
|
||
* Add a configure option --enable-x86-relax-relocations to decide whether
|
||
x86 assembler should generate relax relocations by default. Default to
|
||
yes, except for x86 Solaris targets older than Solaris 12.
|
||
|
||
* New command-line option -mrelax-relocations= for x86 target to control
|
||
whether to generate relax relocations.
|
||
|
||
* New command-line option -mfence-as-lock-add=yes for x86 target to encode
|
||
lfence, mfence and sfence as "lock addl $0x0, (%[re]sp)".
|
||
|
||
* Add assembly-time relaxation option for ARC cpus.
|
||
|
||
* Add --with-cpu=TYPE configure option for ARC gas. This allows the default
|
||
cpu type to be adjusted at configure time.
|
||
|
||
Changes in 2.26:
|
||
|
||
* Add a configure option --enable-compressed-debug-sections={all,gas} to
|
||
decide whether DWARF debug sections should be compressed by default.
|
||
|
||
* Add support for the ARC EM/HS, and ARC600/700 architectures. Remove
|
||
assembler support for Argonaut RISC architectures.
|
||
|
||
* Symbol and label names can now be enclosed in double quotes (") which allows
|
||
them to contain characters that are not part of valid symbol names in high
|
||
level languages.
|
||
|
||
* Added the correctly spelled -march=armv6kz, for ARMv6KZ support. The
|
||
previous spelling, -march=armv6zk, is still accepted.
|
||
|
||
* Support for the ARMv8.1 architecture has been added to the Aarch64 port.
|
||
Support for the individual ARMv8.1 Adv.SIMD, LOR and PAN architecture
|
||
extensions has also been added to the Aarch64 port.
|
||
|
||
* Support for the ARMv8.1 architecture has been added to the ARM port. Support
|
||
for the individual ARMv8.1 Adv.SIMD and PAN architecture extensions has also
|
||
been added to the ARM port.
|
||
|
||
* Extend --compress-debug-sections option to support
|
||
--compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF
|
||
targets.
|
||
|
||
* --compress-debug-sections is turned on for Linux/x86 by default.
|
||
|
||
Changes in 2.25:
|
||
|
||
* Add support for the AVR Tiny microcontrollers.
|
||
|
||
* Replace support for openrisc and or32 with support for or1k.
|
||
|
||
* Enhanced the ARM port to accept the assembler output from the CodeComposer
|
||
Studio tool. Support is enabled via the new command-line option -mccs.
|
||
|
||
* Add support for the Andes NDS32.
|
||
|
||
Changes in 2.24:
|
||
|
||
* Add support for the Texas Instruments MSP430X processor.
|
||
|
||
* Add -gdwarf-sections command-line option to enable per-code-section
|
||
generation of DWARF .debug_line sections.
|
||
|
||
* Add support for Altera Nios II.
|
||
|
||
* Add support for the Imagination Technologies Meta processor.
|
||
|
||
* Add support for the v850e3v5.
|
||
|
||
* Remove assembler support for MIPS ECOFF targets.
|
||
|
||
Changes in 2.23:
|
||
|
||
* Add support for the 64-bit ARM architecture: AArch64.
|
||
|
||
* Add support for S12X processor.
|
||
|
||
* Add support for the VLE extension to the PowerPC architecture.
|
||
|
||
* Add support for the Freescale XGATE architecture.
|
||
|
||
* Add support for .bundle_align_mode, .bundle_lock, and .bundle_unlock
|
||
directives. These are currently available only for x86 and ARM targets.
|
||
|
||
* Add support for the Renesas RL78 architecture.
|
||
|
||
* Add support for the Adapteva EPIPHANY architecture.
|
||
|
||
* For x86, allow 'rep bsf', 'rep bsr', and 'rep ret' syntax.
|
||
|
||
Changes in 2.22:
|
||
|
||
* Add support for the Tilera TILEPro and TILE-Gx architectures.
|
||
|
||
Changes in 2.21:
|
||
|
||
* Gas no longer requires doubling of ampersands in macros.
|
||
|
||
* Add support for the TMS320C6000 (TI C6X) processor family.
|
||
|
||
* GAS now understands an extended syntax in the .section directive flags
|
||
for COFF targets that allows the section's alignment to be specified. This
|
||
feature has also been backported to the 2.20 release series, starting with
|
||
2.20.1.
|
||
|
||
* Add support for the Renesas RX processor.
|
||
|
||
* New command-line option, --compress-debug-sections, which requests
|
||
compression of DWARF debug information sections in the relocatable output
|
||
file. Compressed debug sections are supported by readelf, objdump, and
|
||
gold, but not currently by Gnu ld.
|
||
|
||
Changes in 2.20:
|
||
|
||
* Added support for v850e2 and v850e2v3.
|
||
|
||
* GNU/Linux targets now supports "gnu_unique_object" as a value in the .type
|
||
pseudo op. It marks the symbol as being globally unique in the entire
|
||
process.
|
||
|
||
* ARM assembler now supports .inst[.nw] pseudo-ops to insert opcodes specified
|
||
in binary rather than text.
|
||
|
||
* Add support for common symbol alignment to PE formats.
|
||
|
||
* Add support for the new discriminator column in the DWARF line table,
|
||
with a discriminator operand for the .loc directive.
|
||
|
||
* Add support for Sunplus score architecture.
|
||
|
||
* The .type pseudo-op now accepts a type of STT_GNU_IFUNC which can be used to
|
||
indicate that if the symbol is the target of a relocation, its value should
|
||
not be use. Instead the function should be invoked and its result used as
|
||
the value.
|
||
|
||
* Add support for Lattice Mico32 (lm32) architecture.
|
||
|
||
* Add support for Xilinx MicroBlaze architecture.
|
||
|
||
Changes in 2.19:
|
||
|
||
* New pseudo op .cfi_val_encoded_addr, to record constant addresses in unwind
|
||
tables without runtime relocation.
|
||
|
||
* New command-line option, -h-tick-hex, for sh, m32c, and h8/300 targets, which
|
||
adds compatibility with H'00 style hex constants.
|
||
|
||
* New command-line option, -msse-check=[none|error|warning], for x86
|
||
targets.
|
||
|
||
* New sub-option added to the assembler's -a command-line switch to
|
||
generate a listing output. The 'g' sub-option will insert into the listing
|
||
various information about the assembly, such as assembler version, the
|
||
command-line options used, and a time stamp.
|
||
|
||
* New command-line option -msse2avx for x86 target to encode SSE
|
||
instructions with VEX prefix.
|
||
|
||
* Add Intel XSAVE, EPT, MOVBE, AES, PCLMUL, AVX/FMA support for x86 target.
|
||
|
||
* New command-line options, -march=CPU[,+EXTENSION...], -mtune=CPU,
|
||
-mmnemonic=[att|intel], -msyntax=[att|intel], -mindex-reg,
|
||
-mnaked-reg and -mold-gcc, for x86 targets.
|
||
|
||
* Support for generating wide character strings has been added via the new
|
||
pseudo ops: .string16, .string32 and .string64.
|
||
|
||
* Support for SSE5 has been added to the i386 port.
|
||
|
||
Changes in 2.18:
|
||
|
||
* The GAS sources are now released under the GPLv3.
|
||
|
||
* Support for the National Semiconductor CR16 target has been added.
|
||
|
||
* Added gas .reloc pseudo. This is a low-level interface for creating
|
||
relocations.
|
||
|
||
* Add support for x86_64 PE+ target.
|
||
|
||
* Add support for Score target.
|
||
|
||
Changes in 2.17:
|
||
|
||
* Support for the Infineon XC16X has been added by KPIT Cummins Infosystems.
|
||
|
||
* Support for ms2 architecture has been added.
|
||
|
||
* Support for the Z80 processor family has been added.
|
||
|
||
* Add support for the "@<file>" syntax to the command line, so that extra
|
||
switches can be read from <file>.
|
||
|
||
* The SH target supports a new command-line switch --enable-reg-prefix which,
|
||
if enabled, will allow register names to be optionally prefixed with a $
|
||
character. This allows register names to be distinguished from label names.
|
||
|
||
* Macros with a variable number of arguments are now supported. See the
|
||
documentation for how this works.
|
||
|
||
* Added --reduce-memory-overheads switch to reduce the size of the hash
|
||
tables used, at the expense of longer assembly times, and
|
||
--hash-size=<NUMBER> to set the size of the hash tables used by gas.
|
||
|
||
* Macro names and macro parameter names can now be any identifier that would
|
||
also be legal as a symbol elsewhere. For macro parameter names, this is
|
||
known to cause problems in certain sources when the respective target uses
|
||
characters inconsistently, and thus macro parameter references may no longer
|
||
be recognized as such (see the documentation for details).
|
||
|
||
* Support the .f_floating, .d_floating, .g_floating and .h_floating directives
|
||
for the VAX target in order to be more compatible with the VAX MACRO
|
||
assembler.
|
||
|
||
* New command-line option -mtune=[itanium1|itanium2] for IA64 targets.
|
||
|
||
Changes in 2.16:
|
||
|
||
* Redefinition of macros now results in an error.
|
||
|
||
* New command-line option -mhint.b=[ok|warning|error] for IA64 targets.
|
||
|
||
* New command-line option -munwind-check=[warning|error] for IA64
|
||
targets.
|
||
|
||
* The IA64 port now uses automatic dependency violation removal as its default
|
||
mode.
|
||
|
||
* Port to MAXQ processor contributed by HCL Tech.
|
||
|
||
* Added support for generating unwind tables for ARM ELF targets.
|
||
|
||
* Add a -g command-line option to generate debug information in the target's
|
||
preferred debug format.
|
||
|
||
* Support for the crx-elf target added.
|
||
|
||
* Support for the sh-symbianelf target added.
|
||
|
||
* Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations
|
||
on pe[i]-i386; required for this target's DWARF 2 support.
|
||
|
||
* Support for Motorola MCF521x/5249/547x/548x added.
|
||
|
||
* Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC
|
||
instrucitons.
|
||
|
||
* New command-line option -mno-shared for MIPS ELF targets.
|
||
|
||
* New command-line option --alternate and pseudo-ops .altmacro and .noaltmacro
|
||
added to enter (and leave) alternate macro syntax mode.
|
||
|
||
Changes in 2.15:
|
||
|
||
* The MIPS -membedded-pic option (Embedded-PIC code generation) is
|
||
deprecated and will be removed in a future release.
|
||
|
||
* Added PIC m32r Linux (ELF) and support to M32R assembler.
|
||
|
||
* Added support for ARM V6.
|
||
|
||
* Added support for sh4a and variants.
|
||
|
||
* Support for Renesas M32R2 added.
|
||
|
||
* Limited support for Mapping Symbols as specified in the ARM ELF
|
||
specification has been added to the arm assembler.
|
||
|
||
* On ARM architectures, added a new gas directive ".unreq" that undoes
|
||
definitions created by ".req".
|
||
|
||
* Support for Motorola ColdFire MCF528x added.
|
||
|
||
* Added --gstabs+ switch to enable the generation of STABS debug format
|
||
information with GNU extensions.
|
||
|
||
* Added support for MIPS64 Release 2.
|
||
|
||
* Added support for v850e1.
|
||
|
||
* Added -n switch for x86 assembler. By default, x86 GAS replaces
|
||
multiple nop instructions used for alignment within code sections
|
||
with multi-byte nop instructions such as leal 0(%esi,1),%esi. This
|
||
switch disables the optimization.
|
||
|
||
* Removed -n option from MIPS assembler. It was not useful, and confused the
|
||
existing -non_shared option.
|
||
|
||
Changes in 2.14:
|
||
|
||
* Added support for MIPS32 Release 2.
|
||
|
||
* Added support for Xtensa architecture.
|
||
|
||
* Support for Intel's iWMMXt processor (an ARM variant) added.
|
||
|
||
* An assembler test generator has been contributed and an example file that
|
||
uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c).
|
||
|
||
* Support for SH2E added.
|
||
|
||
* GASP has now been removed.
|
||
|
||
* Support for Texas Instruments TMS320C4x and TMS320C3x series of
|
||
DSP's contributed by Michael Hayes and Svein E. Seldal.
|
||
|
||
* Support for the Ubicom IP2xxx microcontroller added.
|
||
|
||
Changes in 2.13:
|
||
|
||
* Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
|
||
and FR500 included.
|
||
|
||
* Support for DLX processor added.
|
||
|
||
* GASP has now been deprecated and will be removed in a future release. Use
|
||
the macro facilities in GAS instead.
|
||
|
||
* GASP now correctly parses floating point numbers. Unless the base is
|
||
explicitly specified, they are interpreted as decimal numbers regardless of
|
||
the currently specified base.
|
||
|
||
Changes in 2.12:
|
||
|
||
* Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
|
||
|
||
* Support for the OpenRISC 32-bit embedded processor by OpenCores.
|
||
|
||
* The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for
|
||
specifying the target instruction set. The old method of specifying the
|
||
target processor has been deprecated, but is still accepted for
|
||
compatibility.
|
||
|
||
* Support for the VFP floating-point instruction set has been added to
|
||
the ARM assembler.
|
||
|
||
* New psuedo op: .incbin to include a set of binary data at a given point
|
||
in the assembly. Contributed by Anders Norlander.
|
||
|
||
* The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated
|
||
but still works for compatability.
|
||
|
||
* The MIPS assembler no longer issues a warning by default when it
|
||
generates a nop instruction from a macro. The new command-line option
|
||
-n will turn on the warning.
|
||
|
||
Changes in 2.11:
|
||
|
||
* Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff.
|
||
|
||
* x86 gas now supports the full Pentium4 instruction set.
|
||
|
||
* Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs.
|
||
|
||
* Support for Motorola 68HC11 and 68HC12.
|
||
|
||
* Support for Texas Instruments TMS320C54x (tic54x).
|
||
|
||
* Support for IA-64.
|
||
|
||
* Support for i860, by Jason Eckhardt.
|
||
|
||
* Support for CRIS (Axis Communications ETRAX series).
|
||
|
||
* x86 gas has a new .arch pseudo op to specify the target CPU architecture.
|
||
|
||
* x86 gas -q command-line option quietens warnings about register size changes
|
||
due to suffix, indirect jmp/call without `*', stand-alone prefixes, and
|
||
translating various deprecated floating point instructions.
|
||
|
||
Changes in 2.10:
|
||
|
||
* Support for the ARM msr instruction was changed to only allow an immediate
|
||
operand when altering the flags field.
|
||
|
||
* Support for ATMEL AVR.
|
||
|
||
* Support for IBM 370 ELF. Somewhat experimental.
|
||
|
||
* Support for numbers with suffixes.
|
||
|
||
* Added support for breaking to the end of repeat loops.
|
||
|
||
* Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
|
||
|
||
* New .elseif pseudo-op added.
|
||
|
||
* New --fatal-warnings option.
|
||
|
||
* picoJava architecture support added.
|
||
|
||
* Motorola MCore 210 processor support added.
|
||
|
||
* A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
|
||
assembly programs with intel syntax.
|
||
|
||
* New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
|
||
|
||
* Added -gdwarf2 option to generate DWARF 2 debugging information.
|
||
|
||
* Full 16-bit mode support for i386.
|
||
|
||
* Greatly improved instruction operand checking for i386. This change will
|
||
produce errors or warnings on incorrect assembly code that previous versions
|
||
of gas accepted. If you get unexpected messages from code that worked with
|
||
older versions of gas, please double check the code before reporting a bug.
|
||
|
||
* Weak symbol support added for COFF targets.
|
||
|
||
* Mitsubishi D30V support added.
|
||
|
||
* Texas Instruments c80 (tms320c80) support added.
|
||
|
||
* i960 ELF support added.
|
||
|
||
* ARM ELF support added.
|
||
|
||
Changes in 2.9:
|
||
|
||
* Texas Instruments c30 (tms320c30) support added.
|
||
|
||
* The assembler now optimizes the exception frame information generated by egcs
|
||
and gcc 2.8. The new --traditional-format option disables this optimization.
|
||
|
||
* Added --gstabs option to generate stabs debugging information.
|
||
|
||
* The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
|
||
listing.
|
||
|
||
* Added -MD option to print dependencies.
|
||
|
||
Changes in 2.8:
|
||
|
||
* BeOS support added.
|
||
|
||
* MIPS16 support added.
|
||
|
||
* Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
|
||
|
||
* Alpha/VMS support added.
|
||
|
||
* m68k options --base-size-default-16, --base-size-default-32,
|
||
--disp-size-default-16, and --disp-size-default-32 added.
|
||
|
||
* The alignment directives now take an optional third argument, which is the
|
||
maximum number of bytes to skip. If doing the alignment would require
|
||
skipping more than the given number of bytes, the alignment is not done at
|
||
all.
|
||
|
||
* The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
|
||
|
||
* The -a option takes a new suboption, c (e.g., -alc), to skip false
|
||
conditionals in listings.
|
||
|
||
* Added new pseudo-op, .equiv; it's like .equ, except that it is an error if
|
||
the symbol is already defined.
|
||
|
||
Changes in 2.7:
|
||
|
||
* The PowerPC assembler now allows the use of symbolic register names (r0,
|
||
etc.) if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.)
|
||
can be used any time. PowerPC 860 move to/from SPR instructions have been
|
||
added.
|
||
|
||
* Alpha Linux (ELF) support added.
|
||
|
||
* PowerPC ELF support added.
|
||
|
||
* m68k Linux (ELF) support added.
|
||
|
||
* i960 Hx/Jx support added.
|
||
|
||
* i386/PowerPC gnu-win32 support added.
|
||
|
||
* SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the
|
||
default is to build COFF-only support. To get a set of tools that generate
|
||
ELF (they'll understand both COFF and ELF), you must configure with
|
||
target=i386-unknown-sco3.2v5elf.
|
||
|
||
* m88k-motorola-sysv3* support added.
|
||
|
||
Changes in 2.6:
|
||
|
||
* Gas now directly supports macros, without requiring GASP.
|
||
|
||
* Gas now has an MRI assembler compatibility mode. Use -M or --mri to select
|
||
MRI mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the
|
||
``.mri 0'' is seen; this can be convenient for inline assembler code.
|
||
|
||
* Added --defsym SYM=VALUE option.
|
||
|
||
* Added -mips4 support to MIPS assembler.
|
||
|
||
* Added PIC support to Solaris and SPARC SunOS 4 assembler.
|
||
|
||
Changes in 2.4:
|
||
|
||
* Converted this directory to use an autoconf-generated configure script.
|
||
|
||
* ARM support, from Richard Earnshaw.
|
||
|
||
* Updated VMS support, from Pat Rankin, including considerably improved
|
||
debugging support.
|
||
|
||
* Support for the control registers in the 68060.
|
||
|
||
* Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
|
||
provide for possible future gcc changes, for targets where gas provides some
|
||
features not available in the native assembler. If the native assembler is
|
||
used, it should become obvious pretty quickly what the problem is.
|
||
|
||
* Usage message is available with "--help".
|
||
|
||
* The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3
|
||
also, but didn't get into the NEWS file.)
|
||
|
||
* Weak symbol support for a.out.
|
||
|
||
* A bug in the listing code which could cause an infinite loop has been fixed.
|
||
Bugs in listings when generating a COFF object file have also been fixed.
|
||
|
||
* Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by
|
||
Paul Kranenburg.
|
||
|
||
* Improved Alpha support. Immediate constants can have a much larger range
|
||
now. Support for the 21164 has been contributed by Digital.
|
||
|
||
* Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
|
||
|
||
Changes in 2.3:
|
||
|
||
* Mach i386 support, by David Mackenzie and Ken Raeburn.
|
||
|
||
* RS/6000 and PowerPC support by Ian Taylor.
|
||
|
||
* VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
|
||
based on mail received from various people. The `-h#' option should work
|
||
again too.
|
||
|
||
* HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
|
||
with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
|
||
version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
|
||
this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
|
||
in the "dist" directory.
|
||
|
||
* Vax support in gas fixed for BSD, so it builds and seems to run a couple
|
||
simple tests okay. I haven't put it through extensive testing. (GNU make is
|
||
currently required for BSD 4.3 builds.)
|
||
|
||
* Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
|
||
based on code donated by CMU, which used an a.out-based format. I'm afraid
|
||
the alpha-a.out support is pretty badly mangled, and much of it removed;
|
||
making it work will require rewriting it as BFD support for the format anyways.
|
||
|
||
* Irix 5 support.
|
||
|
||
* The test suites have been fixed up a bit, so that they should work with a
|
||
couple different versions of expect and dejagnu.
|
||
|
||
* Symbols' values are now handled internally as expressions, permitting more
|
||
flexibility in evaluating them in some cases. Some details of relocation
|
||
handling have also changed, and simple constant pool management has been
|
||
added, to make the Alpha port easier.
|
||
|
||
* New option "--statistics" for printing out program run times. This is
|
||
intended to be used with the gcc "-Q" option, which prints out times spent in
|
||
various phases of compilation. (You should be able to get all of them
|
||
printed out with "gcc -Q -Wa,--statistics", I think.)
|
||
|
||
Changes in 2.2:
|
||
|
||
* RS/6000 AIX and MIPS SGI Irix 5 support has been added.
|
||
|
||
* Configurations that are still in development (and therefore are convenient to
|
||
have listed in configure.in) still get rejected without a minor change to
|
||
gas/Makefile.in, so people not doing development work shouldn't get the
|
||
impression that support for such configurations is actually believed to be
|
||
reliable.
|
||
|
||
* The program name (usually "as") is printed when a fatal error message is
|
||
displayed. This should prevent some confusion about the source of occasional
|
||
messages about "internal errors".
|
||
|
||
* ELF support is falling into place. Support for the 386 should be working.
|
||
Support for SPARC Solaris is in. HPPA support from Utah is being integrated.
|
||
|
||
* Symbol values are maintained as expressions instead of being immediately
|
||
boiled down to add-symbol, sub-symbol, and constant. This permits slightly
|
||
more complex calculations involving symbols whose values are not alreadey
|
||
known.
|
||
|
||
* DBX-style debugging info ("stabs") is now supported for COFF formats.
|
||
If any stabs directives are seen in the source, GAS will create two new
|
||
sections: a ".stab" and a ".stabstr" section. The format of the .stab
|
||
section is nearly identical to the a.out symbol format, and .stabstr is
|
||
its string table. For this to be useful, you must have configured GCC
|
||
to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
|
||
that can use the stab sections (4.11 or later).
|
||
|
||
* LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS
|
||
support is in progress.
|
||
|
||
Changes in 2.1:
|
||
|
||
* Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
|
||
incorporated, but not well tested yet.
|
||
|
||
* Altered the opcode table split for m68k; it should require less VM to compile
|
||
with gcc now.
|
||
|
||
* Some minor adjustments to add (Convergent Technologies') Miniframe support,
|
||
suggested by Ronald Cole.
|
||
|
||
* HPPA support (running OSF only, not HPUX) has been contributed by Utah. This
|
||
includes improved ELF support, which I've started adapting for SPARC Solaris
|
||
2.x. Integration isn't completely, so it probably won't work.
|
||
|
||
* HP9000/300 support, donated by HP, has been merged in.
|
||
|
||
* Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
|
||
|
||
* Better error messages for unsupported configurations (e.g., hppa-hpux).
|
||
|
||
* Test suite framework is starting to become reasonable.
|
||
|
||
Changes in 2.0:
|
||
|
||
* Mostly bug fixes.
|
||
|
||
* Some more merging of BFD and ELF code, but ELF still doesn't work.
|
||
|
||
Changes in 1.94:
|
||
|
||
* BFD merge is partly done. Adventurous souls may try giving configure the
|
||
"--with-bfd-assembler" option. Currently, ELF format requires it, a.out
|
||
format accepts it; SPARC CPU accepts it. It's the default only for OS "elf"
|
||
or "solaris". (ELF isn't really supported yet. It needs work. I've got
|
||
some code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not
|
||
fully merged yet.)
|
||
|
||
* The 68K opcode table has been split in half. It should now compile under gcc
|
||
without consuming ridiculous amounts of memory.
|
||
|
||
* A couple data structures have been reduced in size. This should result in
|
||
saving a little bit of space at runtime.
|
||
|
||
* Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF
|
||
code provided ROSE format support, which I haven't merged in yet. (I can
|
||
make it available, if anyone wants to try it out.) Ralph's code, for BSD
|
||
4.4, supports a.out format. We don't have ECOFF support in just yet; it's
|
||
coming.
|
||
|
||
* Support for the Hitachi H8/500 has been added.
|
||
|
||
* VMS host and target support should be working now, thanks chiefly to Eric
|
||
Youngdale.
|
||
|
||
Changes in 1.93.01:
|
||
|
||
* For m68k, support for more processors has been added: 68040, CPU32, 68851.
|
||
|
||
* For i386, .align is now power-of-two; was number-of-bytes.
|
||
|
||
* For m68k, "%" is now accepted before register names. For COFF format, which
|
||
doesn't use underscore prefixes for C labels, it is required, so variable "a0"
|
||
can be distinguished from the register.
|
||
|
||
* Last public release was 1.38. Lots of configuration changes since then, lots
|
||
of new CPUs and formats, lots of bugs fixed.
|
||
|
||
|
||
Copyright (C) 2012-2022 Free Software Foundation, Inc.
|
||
|
||
Copying and distribution of this file, with or without modification,
|
||
are permitted in any medium without royalty provided the copyright
|
||
notice and this notice are preserved.
|
||
|
||
Local variables:
|
||
fill-column: 79
|
||
End:
|