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Diffstat (limited to 'binutils-2.25/gas/NEWS')
| -rw-r--r-- | binutils-2.25/gas/NEWS | 626 |
1 files changed, 626 insertions, 0 deletions
diff --git a/binutils-2.25/gas/NEWS b/binutils-2.25/gas/NEWS new file mode 100644 index 00000000..fc1514ec --- /dev/null +++ b/binutils-2.25/gas/NEWS @@ -0,0 +1,626 @@ +-*- text -*- + +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 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: |