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Add powerpc64 and mips32 architecture support #170

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Add powerpc64 and mips32 architecture support #170

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f84458a
Add powerpc64 and mips32 architecture support
walruscraft Jan 13, 2026
af736e3
Fix rustfmt: remove extra blank line in mips32.rs
walruscraft Jan 21, 2026
e9d766c
Fix misleading comment about MIPS entry points
walruscraft Jan 21, 2026
4d4e2cf
Simplify mprotect syscall: remove unused r0 output
walruscraft Jan 21, 2026
b542a14
Use symbolic constant for __NR_set_thread_area
walruscraft Jan 21, 2026
fa4a9d6
Fail explicitly for unsupported clone flags on MIPS
walruscraft Jan 21, 2026
e5b72fa
Trim verbose clone() comment in powerpc64.rs
walruscraft Jan 21, 2026
47e0f9f
Document which architectures aren't tested in CI
walruscraft Jan 22, 2026
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14 changes: 14 additions & 0 deletions README.md
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Expand Up @@ -33,6 +33,20 @@ using nightly Rust, enable the feature "nightly" to let origin use nightly-only
features, which include proper support for unwinding, better safety checks, and
better optimizations.

Origin supports multiple architectures: x86-64, x86, aarch64, arm (32-bit),
riscv64, powerpc64, and mips32. The arm, powerpc64, and mips32 ports are not
tested in CI, for reasons that range from "Rust doesn't ship binaries for that"
to "that one crate doesn't support this arch yet":

- **mips32**: rust-std isn't available for download. CI would need `-Zbuild-std`
to build the standard library from source, which is nightly-only.

- **powerpc64**: On stable, rustix uses the libc backend which is missing the
runtime module for signal handling. On nightly, the `unwinding` crate hasn't
caught up with ppc64 yet.

- **arm (32-bit)**: CI setup exists on a branch somewhere, waiting to be merged.

## Example crates

Origin can also be used on its own, in several different configurations:
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