GNU Toolchain for ARC Processors, 2023.03

This is release of 2023.03 version of the GNU Toolchain for DesignWare ARC 600, ARC 700, EM, HS3x/4x, HS5x & HS6x processors. This is a maintenance release which brings incremental improvements for major toolchain components such as GCC, Binutils & GDB for ARC 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 2.40 with ARC patches
• GCC 12.2 with ARC patches
• GDB pre-14.1 with ARC patches
• newlib 4.3.0 with ARC patches
• uClibc-ng v1.0.43 with ARC patches
• glibc 2.37 with ARC patches

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

New Features and Enhancements

• Binary distribution

  • Supported host operating systems: Windows 10 64-bit, Ubuntu 18.04.x, 20.04.x, CentOS/RHEL 7.x

• GCC

  • Sources used for the release are available here: https://github.com/foss-for-synopsys-dwc-arc-processors/gcc/releases/tag/arc-2023.03-rc1
  • Uses 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
  • No major updates compared to the previous release.

• GDB

  • Sources used for the release are available here: https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb/releases/tag/arc-2023.03-rc1
  • Updated to the upstream sources of what eventually will become v14.1 release.
  • Fixes and improvements for all generations of ARC processors.

• Binutils

  • Sources used for the release are available here: https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb/releases/tag/arc-2023.03-rc1
  • Updated to the upstream 2.40 release.
  • Improved stability when linking (see #533, #524 & #523)
  • Added color output for disassembler.
  • Assembler: fix encoding for neg.f 0,Rb, see #531

• glibc

  • Sources used for the release are available here: https://github.com/foss-for-synopsys-dwc-arc-processors/glibc/releases/tag/arc-2023.03-rc1
  • Updated to the upstream 2.37 release. For more details see release announcement https://sourceware.org/pipermail/libc-alpha/2023-February/145190.html & release notes https://sourceware.org/glibc/wiki/Release/2.37.
  • Support for ARCv3 processors is implemented with changes on top of the upstream release.

• uClibc-ng

  • Sources used for the release are avaialble here: https://github.com/foss-for-synopsys-dwc-arc-processors/uClibc/tree/arc-2023.03
  • Updated to the latest upstream version v1.0.43, see https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tag/?h=v1.0.43
  • ARCv3 32-bit processors support is now in the upstream project, with only a few minor changes applied on top of the upstream release.

• Newlib

  • Sources used for the release are avaialble here: https://github.com/foss-for-synopsys-dwc-arc-processors/newlib/releases/tag/arc-2023.03-rc1
  • Updated to the upstream 4.3.0 release with ARC patches applied on top of it.
  • Update spec files to work with libnano.
  • Added optimized string routines for ARC64.

Also, here is the list of GitHub issues addressed in this release: https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/issues?q=is%3Aissue+milestone%3A2023.03+is%3Aclosed
Note, though, this list only contains issues filed against ARC GNU toolchain. Bugs and enhancements made in upstream open-source projects of each toolchain component could be found inthe corresponding bug-tracking system.

Fixes and improvements in the final release compared to Release Candidate 1

There're no changes in the final release compared to the release candidate 1.

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

7. vmax2/vmin2 are encoded faulty for ARC HS5x processors, see: foss-for-synopsys-dwc-arc-processors/qemu#181

8. 32-bit relocations may overflow when dealing with 32-bit unsigned numbers. This is valid only for 64-bit ARCv3 processors (e.g., HS6x), see: #564

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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