GNU Toolchain for ARC Processors, 2022.09-rc2

This is the second release candidate of 2022.09 version of the GNU Toolchain for DesignWare ARC 600, ARC 700, EM, HS3x/4x, HS5x & HS6x processors. Most notably, this is the first release of ARC GNU toolchain with support of both 32- (ARC HS5x) & 64-bit (ARC HS6x) versions of ARCv3 processors.

GNU Documentation can be found online here https://foss-for-synopsys-dwc-arc-processors.github.io/toolchain.

A list of useful how-to instructions can also be found on the GNU Toolchain for DesignWare ARC Processors Documentation wiki.

Toolchain and IDE Components Versions

• Binutils 2.38 with ARC patches
• GCC 12.2 with ARC patches
• GDB 12.1 with ARC patches
• newlib 3.2.0 with ARC patches
• uClibc-ng v1.0.42
• glibc 2.34

This release of GNU toolchain is supported by CGEN IPlib (TCF generator) version 1.0.53 and later.

New Features and Enhancements

• Added support for ARCv3 processors

  • Multilib bare-metal toolchain suitable for building application for bare metal ARC HS5x & HS6x processors.
  • Linux toolchain with uClibc for 32-bit ARC HS5x processors
  • Linux toolchain with glibc for 64-bit ARC HS6x processors

• Binary distribution

  • Supported host operating systems: Windows 10 64-bit, Ubuntu 16.04.x, 18.04.x, CentOS/RHEL 7.x

• GCC

  • Updated to upstream 12.2 release, see release announcement https://gcc.gnu.org/pipermail/gcc-announce/2022/000174.html & complete list of changes https://gcc.gnu.org/gcc-12/changes.html
  • Added support for ARCv3 processors
  • Fixes and improvements for ARCompact & ARCv2 processors

• GDB

  • Updated to the upstream v12.1 release, see release notes for more details: https://lists.gnu.org/archive/html/info-gnu/2022-05/msg00000.html
  • Added support for ARCv2 processors
  • Bug fixes

• Binutils

  • Updated to Binutils 2.38, see release notes for more info: https://sourceware.org/pipermail/binutils/2022-February/119721.html
  • Added support for ARCv3 processors
  • Bug fixes

• glibc

  • Updated to the upstream 2.34 release. For more details see release announcement https://sourceware.org/pipermail/libc-alpha/2021-August/129718.html & release notes https://sourceware.org/glibc/wiki/Release/2.34.
  • Added support for ARCv3 processors

• uClibc-ng

  • Updated to the latest upstream version v1.0.42, see https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tag/?h=v1.0.42
  • Added support for ARCv3 processors

• Newlib

  • No changes, the same version is used
  • Added support for ARCv3 processors

Fixes and improvements in the Release Candidate 2 compared to Release Candidate 1

1. Fixed "GDB for Windows does not work correctly in Eclipse plugin" (#501).
2. Fixed "undefined reference to _kill/_kill_r & _getpid/_getpid_r" when building bare-metal applications (#502).
3. Added support of 64-bit atomic instructions (llockd & scondd) for 32-bit ARCv3 ARC HS5x processors (#505)

Known issues

1. CenOS 6.x hosts are not supported any longer for both running prebuilt tools as well as for building tools, see #202.

2. GDB compilation may intermittently fail due to unwanted regenerating intl/plural.c, see #212.

3. [Jira P10019563-38842] Ashling Opella-XD drivers of version 1.2.6 and above to work with ARC GNU IDE required to run the Ashling GDB server separately and select "Connect to a running GDB server" in the Debug Launch.

   To run the Ashling GDB server use the following from a command prompt:

   C:\AshlingOpellaXDforARC> ash-arc-gdb-server.exe --device arc-em
   

   Other supported devices are arc-hs, arc-600 and arc-700.

   See section "3.2 Configuring the Ashling GDB Server" in the Ashling Opella-XD ARC User manual for more details.

4. Newlib's libgloss doesn't support RF16 configuration of ARC cores when building for nSIM with "GNU Hostlink", see #231. But with use of "MetaWare Hostlink" RF16 configuration might be used now, see https://github.com/foss-for-synopsys-dwc-arc-processors/newlib/blob/arc-2021.03/libgloss/arc/readme-hostlink.md for more details.

5. Non-multilib toolchain built for ARC EM doesn't contain libdw_uart.a for EMSK, see #262

6. macOS cross-toolchains are not being distributed in this release

Please report any problems by filing an Issue in GitHub here.

	Linux x86_64	Windows x86_64	Linux ARC HS	macOS x86_64
Baremetal	Little endian \ Big endian
Linux/uClibc ARC700	Little endian \ Big endian
Linux/uClibc ARC HS	Little endian \ Big endian
Linux/glibc ARC HS	Little endian \ Big endian		Little endian
IDE	Download	Download
Baremetal ARCv3	Little endian
Linux/glibc ARC HS68	Little endian		Little endian
Linux/uClibc ARC HS58	Little endian		Little endian

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