Release 2024.05

Changes since 2023.05:

• Updated GCC to 14.1.0.
• Updated Binutils to 2.42.
• Updated gnuprumcu to v0.9.5.

Release 2023.05

• Updated to GCC 13.1.
• Updated gnuprumcu to v0.9.4.
• Added C header with AM62x I/O register definitions. Tested with HC-SR04 example on BeaglePlay.
• Fixed an incorrect field member size in I/O header for AM587x.

Release 2023.01

This is a bug fix release.

• Firmware alignment is now always correct for Beaglebone AI64. This fixes issue #46.
• A rare code generation issue with CLZ pattern has been fixed. More information here

Release 2022.05

Not much changes since the 2021.12-beta release:

• Bumped gnuprumcu to v0.8.0. This includes preliminary AM62x specs.
• Bumped GCC to the official 12.1 release.
• Bumped Binutils to official 2.38 release.

As usual, prebuilt cross toolchains are provided for Linux x86_64 and armhf hosts, as well as an experimental one for Windows.

Release 2021.12-beta

This is a Beta release from snapshots of the GNU development trees. It brings new features:

• Support for .pru_irq_map section, as required by remoteproc in Linux kernel versons 5.10 and later.
• Allow direct access to __R30 and __R31 from C:

#include <pru/io.h>
...
    __R30 |= (1 << 4);

Component versions:

• GCC 12-rc snapshot from commit aeedb00a1a (NOT AN OFFICIAL GCC RELEASE).
• Binutils 2.38-rc snapshot from commit 2749ac13397 (NOT AN OFFICIAL BINUTILS RELEASE)
• Newlib v4.1.0
• Gnuprumcu v0.7.0

As usual, prebuilt cross toolchains are provided for x86_64 and armhf hosts. As well as an experimental one for Windows.

Release 2021.10

This is a bug fix release. It fixes an issue in the 2021.07 default linker script which can corrupt the remoteproc resource table.

Changes since 2021.07:

• Include patch in https://sourceware.org/pipermail/binutils/2021-September/118057.html

As usual, prebuilt binaries for amd64 and armhf Linux hosts are provided. They have been prepared with https://github.com/dinuxbg/crosstool-ng/releases/tag/gnupru.2021.10 .

Experimental prebuilts for Windows hosts are also provided. They have been prepared using 2ef9573

Release 2021.07

DO NOT USE

This release includes Binutils 2.37, which has a bug in the PRU port which does not handle resource_table properly. See https://sourceware.org/pipermail/binutils/2021-September/118057.html .

---

PRU support has been mainlined for quite a while. So let's make an official release to commemorate it.

Build scripts no longer apply out-of-tree patches. You build what you download from official mainline releases:

• gcc-11.1.0
• binutils-2.37
• newlib-4.1.0
• gnuprumcu-0.6.0

I'm also releasing prebuilt tarballs for amd64 and armhf hosts.

BETA RC3 release

• When linking object files from GCC and TI toolchains, you must use the -mabi=ti option.
• GCC PRU port has been overhauled to better support TI ABI. With some care, GCC/Binutils can now link against TI proprietary object files.
  • GCC now supports register packing for function arguments.
  • GCC now efficiently stores 8-bit variables into 8-bit subregisters.
  • LD has been fixed to support both RELA and REL relocations, since TI tools tend to randomly pick one or another for their output.
  • LD and GAS have fixed LDI32 relocation to be compliant with TI toolchain.
  • LD linker script has been updated.
  • Documented instructions to execute ABI checking testsuite.
• You must clean your object files from previous releases, and rebuild your projects. This is necessary due to incompatible changes in ELF implemented for ABI compatibility.

BETA RC2.2 release

• Optimized arithmetic shift right. Fixes github issue #25.
• Rebased to respective upstream projects.

BETA RC2.1 release

Changes since BETA RC2:

• Fixes for 32-bit hosts.

Changes since BETA RC1.1:

• ld: Switched relocations to be more compatible with TI's toolchain. YOU MUST RECOMPILE ALL YOUR SOURCE FILES - object files from old and new binutils cannot be linked together.
• gas: Added WBC and WBS pseudo ops to GAS.
• gas: Added optional & prefix for addressed registers
• gas/ld: Removed %hi/%lo/%hi_rlz assembler constructs and instead implemented LDI32 pseudo instruction.
• gas: Switched to r3.w2 as Return Address Register for the call and ret pseudos.
• gas: Added %label() construct to allow disambiguating register from label JMP operands.
• Fixed invalid-syntax assembler generation on 32bit hosts.
• Removed leading underscore for symbols for better TI ABI compatibility.