ppc750cl-asm
| Crates.io | ppc750cl-asm |
| lib.rs | ppc750cl-asm |
| version | 0.3.2 |
| source | src |
| created_at | 2024-09-10 01:18:10.839308 |
| updated_at | 2024-09-27 05:25:39.573814 |
| description | Assembler for PowerPC 750CL |
| homepage | |
| repository | https://github.com/encounter/ppc750cl |
| max_upload_size | |
| id | 1369944 |
| size | 173,946 |
Luke Street (encounter)
documentation
https://docs.rs/ppc750cl-asm
README
ppc750cl 
Rust tools for working with the PowerPC 750CL / 750CXe family of processors.
Building
cargo run --package ppc750cl-genisa
cargo build --release
Instruction Set
For those unfamiliar with PowerPC, here are some basics.
- PowerPC 7xx is a family of RISC CPUs produced from 1997 to 2012.
- They operate with 32-bit words and every instruction is 32-bits wide.
- This project focuses (only) on compatibility with the PowerPC 750CL and 750CXe.
- PowerPC 750CL ("Broadway") is used in the Nintendo Wii.
- PowerPC 750CXe ("Gekko") is used in the Nintendo GameCube.
- They add a "paired-singles" SIMD unit and a bunch of other instructions.
isa.yaml
The file isa.yaml contains a full definition of the PowerPC 750CL / 750CXe instruction set.
It powers the disassembler and assembler.
Similarly to LLVM TableGen, the program ppc750cl-genisa generates a Rust file implementing an instruction decoder.
Safety & Correctness
- The disassembler has been fuzzed over all ~4.29 billion possible instructions (via
ppc750cl-fuzz). - It is safe to run the disassembler over untrusted byte arrays.
- However, no guarantees on correctness are made (yet). Expect bugs.
Performance
With a single thread on Ryzen 9 3900X:
- Disassembling & printing: ~12M insn/s (~50 MB/s)
- Disassembling only: ~275M insn/s (~1 GB/s)