Advisor Dependencies

Ghidra

• Ghidra 11.3_DEV with the RISCV-64 isa_ext branch. Without this branch Ghidra is stuck with a never-ratified older version of RISCV support.

Bazel

• Bazel 8.0

Bazel builds in this workspace generate output in the temporary directory /run/user/1000/bazel, as specified in .bazelrc. This override can be changed or removed

This project should work with Bazel 7.x as well, after adjusting some toolchain path names. Bazel 8 uses ‘+’ instead of ‘~’ as an external repo naming suffix and ‘@@’ instead of ‘@’ to identify standard bazel repositories.

Toolchain

• binutils 2.42.50
• gcc 15.0
• glibc developmental version 2.39.9000
• sysroot - a stripped down linux sysroot derived from the sysroot bootstrap in riscv-gnu-toolchain

The toolchain is packaged locally as a Bazel module named gcc_riscv_suite, version 15.0.0.1. (Note that this is the first patch to the Bazel module based on the unreleased GCC-15.0.0). This module depends on a second module, fedora_syslibs version 41.0.0. These are served out of a local Bazel module repository. The gcc_riscv_suite and fedora_syslibs modules wrap a 42 MB and 4.0 MB tarball, respectively.

Emulators

Two qemu emulators are used, both built from source shortly after the 9.0.50 release.

• qemu-riscv64 provides user space emulation, which is very useful for exploring the behavior of particularly confusing assembly code sequences.
• qemu-system-riscv64 provides full RISCV-64 VM hosting. This is more narrowly useful when testing binaries like DPDK which require non-standard kernel options or kernel modules.
  • The RISCV-64 VM used here is based on an Ubuntu 24.04 disk image and the u-boot.bin boot loader. This boot loader is critical for RISCV VMs, since the emulated BIOS firmware provides the kernel with the definitive set of RISCV extensions available to the hardware threads (aka harts)

Jupyter

• jupyterlab 4.1.1

System

• Fedora 41 with wayland graphics.
• Python 3.13