- Update to binutils 2.27.
* Add a configure option, --enable-64-bit-archive, to force use of a
64-bit format when creating an archive symbol index.
* Add --elf-stt-common= option to objcopy for ELF targets to control
whether to convert common symbols to the STT_COMMON type.
GAS:
* 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.