Add native RISC-V support #55
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- Base RV64I arithmetic assembly - No Zb nor Vector extensions - Naive implementation 1 block at a time and no pipelining for scheduling
- Add RISC-V 64 target to CI workflow with QEMU emulation - Add riscv_hwprobe syscall for runtime CPU feature detection - Detect Zknh+Zbkb for crypto, Zbb for bit manipulation 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
- Add bindings_riscv64.go with supportedCPU=false (falls back to generic Go implementation until .syso file is added) - Add RISC-V to go-bindings CI matrix with QEMU testing - Cross-compile and test Go bindings on RISC-V using qemu-riscv64 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
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- Add build-syso.yml workflow that builds syso files for all platforms: - Linux x86 (hashtree_amd64.syso) - macOS arm64 (hashtree_darwin_arm64.syso) - Linux arm64 (hashtree_linux_arm64.syso) - Windows x86 (hashtree_windows_amd64.syso) - Linux RISC-V 64 (hashtree_linux_riscv64.syso) - Workflow commits syso files back to the repo - Triggers on any branch when src/ changes, or manual dispatch - Enable native RISC-V support in bindings_riscv64.go 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
Allow CI tests to run after syso files are committed to validate them. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
Remove workflow file from trigger paths to prevent re-triggering when the workflow itself is modified. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
Use CGO_ENABLED=1 with the cross-compiler to properly link the RISC-V syso file when building the test binary. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
Bridges Go's HashtreeHash function to the C library's hashtree_hash, which handles runtime CPU feature detection internally. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
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fixes #41
h/t to @washosk for lending me a metal board access.