mirror of
https://sourceware.org/git/binutils-gdb.git
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0d2b51ad6a
* NEWS: Mention --compress-debug-sections is on by default for Linux/x86.
642 lines
22 KiB
Plaintext
642 lines
22 KiB
Plaintext
-*- text -*-
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Changes in 2.26:
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* --compress-debug-sections is turned on for Linux/x86 by default.
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Changes in 2.25:
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* Add support for the AVR Tiny microcontrollers.
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* Replace support for openrisc and or32 with support for or1k.
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* Enhanced the ARM port to accept the assembler output from the CodeComposer
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Studio tool. Support is enabled via the new command line option -mccs.
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* Add support for the Andes NDS32.
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Changes in 2.24:
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* Add support for the Texas Instruments MSP430X processor.
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* Add -gdwarf-sections command line option to enable per-code-section
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generation of DWARF .debug_line sections.
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* Add support for Altera Nios II.
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* Add support for the Imagination Technologies Meta processor.
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* Add support for the v850e3v5.
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* Remove assembler support for MIPS ECOFF targets.
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Changes in 2.23:
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* Add support for the 64-bit ARM architecture: AArch64.
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* Add support for S12X processor.
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* Add support for the VLE extension to the PowerPC architecture.
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* Add support for the Freescale XGATE architecture.
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* Add support for .bundle_align_mode, .bundle_lock, and .bundle_unlock
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directives. These are currently available only for x86 and ARM targets.
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* Add support for the Renesas RL78 architecture.
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* Add support for the Adapteva EPIPHANY architecture.
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* For x86, allow 'rep bsf', 'rep bsr', and 'rep ret' syntax.
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Changes in 2.22:
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* Add support for the Tilera TILEPro and TILE-Gx architectures.
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Changes in 2.21:
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* Gas no longer requires doubling of ampersands in macros.
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* Add support for the TMS320C6000 (TI C6X) processor family.
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* GAS now understands an extended syntax in the .section directive flags
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for COFF targets that allows the section's alignment to be specified. This
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feature has also been backported to the 2.20 release series, starting with
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2.20.1.
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* Add support for the Renesas RX processor.
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* New command line option, --compress-debug-sections, which requests
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compression of DWARF debug information sections in the relocatable output
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file. Compressed debug sections are supported by readelf, objdump, and
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gold, but not currently by Gnu ld.
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Changes in 2.20:
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* Added support for v850e2 and v850e2v3.
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* GNU/Linux targets now supports "gnu_unique_object" as a value in the .type
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pseudo op. It marks the symbol as being globally unique in the entire
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process.
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* ARM assembler now supports .inst[.nw] pseudo-ops to insert opcodes specified
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in binary rather than text.
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* Add support for common symbol alignment to PE formats.
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* Add support for the new discriminator column in the DWARF line table,
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with a discriminator operand for the .loc directive.
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* Add support for Sunplus score architecture.
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* The .type pseudo-op now accepts a type of STT_GNU_IFUNC which can be used to
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indicate that if the symbol is the target of a relocation, its value should
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not be use. Instead the function should be invoked and its result used as
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the value.
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* Add support for Lattice Mico32 (lm32) architecture.
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* Add support for Xilinx MicroBlaze architecture.
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Changes in 2.19:
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* New pseudo op .cfi_val_encoded_addr, to record constant addresses in unwind
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tables without runtime relocation.
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* New command line option, -h-tick-hex, for sh, m32c, and h8/300 targets, which
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adds compatibility with H'00 style hex constants.
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* New command line option, -msse-check=[none|error|warning], for x86
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targets.
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* New sub-option added to the assembler's -a command line switch to
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generate a listing output. The 'g' sub-option will insert into the listing
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various information about the assembly, such as assembler version, the
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command line options used, and a time stamp.
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* New command line option -msse2avx for x86 target to encode SSE
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instructions with VEX prefix.
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* Add Intel XSAVE, EPT, MOVBE, AES, PCLMUL, AVX/FMA support for x86 target.
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* New command line options, -march=CPU[,+EXTENSION...], -mtune=CPU,
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-mmnemonic=[att|intel], -msyntax=[att|intel], -mindex-reg,
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-mnaked-reg and -mold-gcc, for x86 targets.
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* Support for generating wide character strings has been added via the new
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pseudo ops: .string16, .string32 and .string64.
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* Support for SSE5 has been added to the i386 port.
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Changes in 2.18:
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* The GAS sources are now released under the GPLv3.
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* Support for the National Semiconductor CR16 target has been added.
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* Added gas .reloc pseudo. This is a low-level interface for creating
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relocations.
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* Add support for x86_64 PE+ target.
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* Add support for Score target.
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Changes in 2.17:
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* Support for the Infineon XC16X has been added by KPIT Cummins Infosystems.
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* Support for ms2 architecture has been added.
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* Support for the Z80 processor family has been added.
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* Add support for the "@<file>" syntax to the command line, so that extra
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switches can be read from <file>.
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* The SH target supports a new command line switch --enable-reg-prefix which,
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if enabled, will allow register names to be optionally prefixed with a $
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character. This allows register names to be distinguished from label names.
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* Macros with a variable number of arguments are now supported. See the
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documentation for how this works.
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* Added --reduce-memory-overheads switch to reduce the size of the hash
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tables used, at the expense of longer assembly times, and
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--hash-size=<NUMBER> to set the size of the hash tables used by gas.
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* Macro names and macro parameter names can now be any identifier that would
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also be legal as a symbol elsewhere. For macro parameter names, this is
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known to cause problems in certain sources when the respective target uses
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characters inconsistently, and thus macro parameter references may no longer
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be recognized as such (see the documentation for details).
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* Support the .f_floating, .d_floating, .g_floating and .h_floating directives
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for the VAX target in order to be more compatible with the VAX MACRO
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assembler.
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* New command line option -mtune=[itanium1|itanium2] for IA64 targets.
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Changes in 2.16:
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* Redefinition of macros now results in an error.
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* New command line option -mhint.b=[ok|warning|error] for IA64 targets.
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* New command line option -munwind-check=[warning|error] for IA64
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targets.
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* The IA64 port now uses automatic dependency violation removal as its default
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mode.
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* Port to MAXQ processor contributed by HCL Tech.
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* Added support for generating unwind tables for ARM ELF targets.
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* Add a -g command line option to generate debug information in the target's
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preferred debug format.
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* Support for the crx-elf target added.
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* Support for the sh-symbianelf target added.
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* Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations
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on pe[i]-i386; required for this target's DWARF 2 support.
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* Support for Motorola MCF521x/5249/547x/548x added.
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* Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC
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instrucitons.
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* New command line option -mno-shared for MIPS ELF targets.
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* New command line option --alternate and pseudo-ops .altmacro and .noaltmacro
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added to enter (and leave) alternate macro syntax mode.
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Changes in 2.15:
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* The MIPS -membedded-pic option (Embedded-PIC code generation) is
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deprecated and will be removed in a future release.
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* Added PIC m32r Linux (ELF) and support to M32R assembler.
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* Added support for ARM V6.
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* Added support for sh4a and variants.
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* Support for Renesas M32R2 added.
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* Limited support for Mapping Symbols as specified in the ARM ELF
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specification has been added to the arm assembler.
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* On ARM architectures, added a new gas directive ".unreq" that undoes
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definitions created by ".req".
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* Support for Motorola ColdFire MCF528x added.
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* Added --gstabs+ switch to enable the generation of STABS debug format
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information with GNU extensions.
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* Added support for MIPS64 Release 2.
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* Added support for v850e1.
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* Added -n switch for x86 assembler. By default, x86 GAS replaces
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multiple nop instructions used for alignment within code sections
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with multi-byte nop instructions such as leal 0(%esi,1),%esi. This
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switch disables the optimization.
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* Removed -n option from MIPS assembler. It was not useful, and confused the
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existing -non_shared option.
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Changes in 2.14:
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* Added support for MIPS32 Release 2.
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* Added support for Xtensa architecture.
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* Support for Intel's iWMMXt processor (an ARM variant) added.
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* An assembler test generator has been contributed and an example file that
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uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c).
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* Support for SH2E added.
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* GASP has now been removed.
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* Support for Texas Instruments TMS320C4x and TMS320C3x series of
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DSP's contributed by Michael Hayes and Svein E. Seldal.
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* Support for the Ubicom IP2xxx microcontroller added.
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Changes in 2.13:
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* Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
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and FR500 included.
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* Support for DLX processor added.
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* GASP has now been deprecated and will be removed in a future release. Use
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the macro facilities in GAS instead.
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* GASP now correctly parses floating point numbers. Unless the base is
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explicitly specified, they are interpreted as decimal numbers regardless of
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the currently specified base.
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Changes in 2.12:
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* Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
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* Support for the OpenRISC 32-bit embedded processor by OpenCores.
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* The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for
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specifying the target instruction set. The old method of specifying the
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target processor has been deprecated, but is still accepted for
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compatibility.
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* Support for the VFP floating-point instruction set has been added to
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the ARM assembler.
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* New psuedo op: .incbin to include a set of binary data at a given point
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in the assembly. Contributed by Anders Norlander.
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* The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated
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but still works for compatability.
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* The MIPS assembler no longer issues a warning by default when it
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generates a nop instruction from a macro. The new command line option
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-n will turn on the warning.
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Changes in 2.11:
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* Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff.
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* x86 gas now supports the full Pentium4 instruction set.
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* Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs.
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* Support for Motorola 68HC11 and 68HC12.
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* Support for Texas Instruments TMS320C54x (tic54x).
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* Support for IA-64.
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* Support for i860, by Jason Eckhardt.
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* Support for CRIS (Axis Communications ETRAX series).
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* x86 gas has a new .arch pseudo op to specify the target CPU architecture.
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* x86 gas -q command line option quietens warnings about register size changes
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due to suffix, indirect jmp/call without `*', stand-alone prefixes, and
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translating various deprecated floating point instructions.
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Changes in 2.10:
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* Support for the ARM msr instruction was changed to only allow an immediate
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operand when altering the flags field.
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* Support for ATMEL AVR.
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* Support for IBM 370 ELF. Somewhat experimental.
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* Support for numbers with suffixes.
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* Added support for breaking to the end of repeat loops.
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* Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
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* New .elseif pseudo-op added.
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* New --fatal-warnings option.
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* picoJava architecture support added.
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* Motorola MCore 210 processor support added.
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* A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
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assembly programs with intel syntax.
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* New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
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* Added -gdwarf2 option to generate DWARF 2 debugging information.
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* Full 16-bit mode support for i386.
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* Greatly improved instruction operand checking for i386. This change will
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produce errors or warnings on incorrect assembly code that previous versions
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of gas accepted. If you get unexpected messages from code that worked with
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older versions of gas, please double check the code before reporting a bug.
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* Weak symbol support added for COFF targets.
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* Mitsubishi D30V support added.
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* Texas Instruments c80 (tms320c80) support added.
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* i960 ELF support added.
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* ARM ELF support added.
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Changes in 2.9:
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* Texas Instruments c30 (tms320c30) support added.
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* The assembler now optimizes the exception frame information generated by egcs
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and gcc 2.8. The new --traditional-format option disables this optimization.
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* Added --gstabs option to generate stabs debugging information.
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* The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
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listing.
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* Added -MD option to print dependencies.
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Changes in 2.8:
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* BeOS support added.
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* MIPS16 support added.
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* Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
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* Alpha/VMS support added.
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* m68k options --base-size-default-16, --base-size-default-32,
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--disp-size-default-16, and --disp-size-default-32 added.
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* The alignment directives now take an optional third argument, which is the
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maximum number of bytes to skip. If doing the alignment would require
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skipping more than the given number of bytes, the alignment is not done at
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all.
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* The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
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* The -a option takes a new suboption, c (e.g., -alc), to skip false
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conditionals in listings.
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* Added new pseudo-op, .equiv; it's like .equ, except that it is an error if
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the symbol is already defined.
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Changes in 2.7:
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* The PowerPC assembler now allows the use of symbolic register names (r0,
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etc.) if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.)
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can be used any time. PowerPC 860 move to/from SPR instructions have been
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added.
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* Alpha Linux (ELF) support added.
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* PowerPC ELF support added.
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* m68k Linux (ELF) support added.
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* i960 Hx/Jx support added.
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* i386/PowerPC gnu-win32 support added.
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* SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the
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default is to build COFF-only support. To get a set of tools that generate
|
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ELF (they'll understand both COFF and ELF), you must configure with
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target=i386-unknown-sco3.2v5elf.
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* m88k-motorola-sysv3* support added.
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Changes in 2.6:
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* Gas now directly supports macros, without requiring GASP.
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* Gas now has an MRI assembler compatibility mode. Use -M or --mri to select
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MRI mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the
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``.mri 0'' is seen; this can be convenient for inline assembler code.
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|
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* Added --defsym SYM=VALUE option.
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|
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* Added -mips4 support to MIPS assembler.
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* Added PIC support to Solaris and SPARC SunOS 4 assembler.
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Changes in 2.4:
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||
|
||
* Converted this directory to use an autoconf-generated configure script.
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||
|
||
* ARM support, from Richard Earnshaw.
|
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|
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* Updated VMS support, from Pat Rankin, including considerably improved
|
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debugging support.
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|
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* Support for the control registers in the 68060.
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|
||
* Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
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provide for possible future gcc changes, for targets where gas provides some
|
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features not available in the native assembler. If the native assembler is
|
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used, it should become obvious pretty quickly what the problem is.
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|
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* Usage message is available with "--help".
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|
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* The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3
|
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also, but didn't get into the NEWS file.)
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|
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* Weak symbol support for a.out.
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|
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* A bug in the listing code which could cause an infinite loop has been fixed.
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Bugs in listings when generating a COFF object file have also been fixed.
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|
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* Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by
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Paul Kranenburg.
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|
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* Improved Alpha support. Immediate constants can have a much larger range
|
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now. Support for the 21164 has been contributed by Digital.
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|
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* Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
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|
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Changes in 2.3:
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|
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* Mach i386 support, by David Mackenzie and Ken Raeburn.
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* RS/6000 and PowerPC support by Ian Taylor.
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|
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* VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
|
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based on mail received from various people. The `-h#' option should work
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again too.
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* HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
|
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with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
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||
version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
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||
this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
|
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in the "dist" directory.
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* Vax support in gas fixed for BSD, so it builds and seems to run a couple
|
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simple tests okay. I haven't put it through extensive testing. (GNU make is
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currently required for BSD 4.3 builds.)
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* Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
|
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based on code donated by CMU, which used an a.out-based format. I'm afraid
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the alpha-a.out support is pretty badly mangled, and much of it removed;
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making it work will require rewriting it as BFD support for the format anyways.
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* Irix 5 support.
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|
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* The test suites have been fixed up a bit, so that they should work with a
|
||
couple different versions of expect and dejagnu.
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|
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* Symbols' values are now handled internally as expressions, permitting more
|
||
flexibility in evaluating them in some cases. Some details of relocation
|
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handling have also changed, and simple constant pool management has been
|
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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) 2012-2014 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:
|