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126 lines
4.9 KiB
Plaintext
126 lines
4.9 KiB
Plaintext
4 years ago
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Release notes for
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*************************************************
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GNU Tools for ARM Embedded Processors 6
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- Q2 2017
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*************************************************
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This release includes the following items:
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* Bare metal EABI pre-built binaries for running on a Windows host
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* Bare metal EABI pre-built binaries for running on a Linux host
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* Bare metal EABI pre-built binaries for running on a Mac OS X host
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* Source code package (together with build scripts and instructions to setup
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build environment), composed of:
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* gcc : ARM/embedded-6-branch revision 249437
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svn://gcc.gnu.org/svn/gcc/branches/ARM/embedded-6-branch/
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* binutils : 2.28
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git://sourceware.org/git/binutils-gdb.git commit c0a558756bcf42dc2554aa778b84bf6e13232819
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* newlib and newlib-nano :
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git://sourceware.org/git/newlib-cygwin.git commit 0d79b021a4ec4e6b9aa1a9f6db0e29a137005ce7
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* gdb : 7.12 without target sim support
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git://sourceware.org/git/binutils-gdb.git commit 17265fcd6b8b6406821d8e6bdcfbb4760bdf28aa
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Note that some or all of the following prerequisites are downloaded when
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building from source:
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* EnvVarUpdate NSIS script :
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http://nsis.sourceforge.net/mediawiki/images/a/ad/EnvVarUpdate.7z
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* expat 2.1.1 :
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http://jaist.dl.sourceforge.net/project/expat/expat/2.1.1/expat-2.1.1.tar.bz2
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* gmp 6.1.0 : ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-6.1.0.tar.bz2
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* isl 0.15 : ftp://gcc.gnu.org/pub/gcc/infrastructure/isl-0.15.tar.bz2
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* libelf 0.8.13 : http://www.mr511.de/software/libelf-0.8.13.tar.gz
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* libiconv 1.14 :
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http://ftp.gnu.org/gnu/libiconv/libiconv-1.14.tar.gz
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* mpc 1.0.3 : ftp://gcc.gnu.org/pub/gcc/infrastructure/mpc-1.0.3.tar.gz
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* mpfr 3.1.4 : ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-3.1.4.tar.bz2
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* python 2.7.13 : https://www.python.org/ftp/python/2.7.13/python-2.7.13.msi
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* zlib 1.2.8
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http://sourceforge.net/projects/libpng/files/zlib/1.2.8/zlib-1.2.8.tar.gz/download
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Supported hosts:
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* Windows 7 32/64 bits (with installer and alternative zip package)
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* Linux 64 bits
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- Ubuntu 14.04 or later (tarball)
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- Ubuntu 14.04/16.04/16.10 (tarball and PPA)
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- RHEL 7 (tarball)
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* Mac OS X 10.7.3 and newer 64 bits (tarball)
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Supported target OS:
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* Bare metal EABI only
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Features:
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* All GCC 6 features, plus latest mainline features:
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+ Full ARMv8-M support including atomics and Security Extensions
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+ ARM PURECODE support for ARMv7-M and ARMv8-M Baseline and Mainline
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+ Co-processor intrinsics support
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+ Cortex-M23 and Cortex-M33 support
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+ -mthumb optional for Cortex-M devices
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* Support for OS-retargeting of locking routines in newlib
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* Advanced SIMD-optimized memchr implementation in newlib
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* Enable setting options for Windows installer on command line
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Tests:
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* Tested on a variety of Cortex-M0/M0+/M3/M4/M7/A9 boards
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* Tested on Qemu
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* Tested on ARM Fast Models
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Important bugs fixed in 6 release:
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* Fix redundant load in loop
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https://answers.launchpad.net/gcc-arm-embedded/+question/259553
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* Fixed stack corruption when using high registers and LR register
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77933
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* Fixed internal compiler error when compiling empty FIQ interrupt handler
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https://bugs.launchpad.net/gcc-arm-embedded/+bug/1454506
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* Fix internal compiler error with LTO when building g++.dg/lto/20081219 testcase
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* Fixed callee-saved register trashing when clobbering SP register
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77904
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* Fixed internal compiler error when using -mslow-flash-data and floating-point
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operations
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71607
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* Fixed wrong code generation with indirect sibbling calls
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https://bugs.launchpad.net/gcc-arm-embedded/+bug/1616992
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* Fixed spurious code removal
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78617
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Important bugs fixed in 6 update 1 release:
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* Fix Mac GDB crash with invalid commands
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https://bugs.launchpad.net/gcc-arm-embedded/+bug/1655778
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* Fix Windows wildcard support
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* Fix selection of newlib.h variant with nano.specs and g++
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https://bugs.launchpad.net/gcc-arm-embedded/+bug/1661882
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* Allow VCMP immediate without prefix in unified syntax
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https://bugs.launchpad.net/gcc-arm-embedded/+bug/1641333
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Important changes in 6 update 2 release:
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* GCC incorrectly assumes Cortex-r[578] have 64-bit single-copy atomic LDRD
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80082
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* LDR pseudo-op generates MOVS
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https://bugs.launchpad.net/gcc-arm-embedded/+bug/1682620
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* Fixed FPSCR getter and setter builtins
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* SG import libraries that were created as executable now fixed to relocatable
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* Enable setting options for Windows installer on command line
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* PURECODE support enabled for ARMv8-M.Baseline
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* Advanced SIMD-optimized memchr implementation in newlib
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Known Changes and Issues:
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* Thumb1 code size regression due to new register allocation:
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59535
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* Multilib is now enabled with --with-multilib-list=rmprofile when building the
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toolchain from source
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