2021-08-07 17:59:07 -07:00
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# ppc750cl
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Rust tools for working with the PowerPC 750CL family of processors.
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2022-04-06 16:48:21 -07:00
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### Rust crates
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```shell
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rustup components add rustfmt
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cargo run --package ppc750cl-genisa
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cargo build --release
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```
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2021-08-16 15:53:29 -07:00
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2022-04-06 16:48:21 -07:00
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### Python module
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2021-08-16 15:53:29 -07:00
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```shell
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python -m venv env
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source ./env/bin/activate
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pip install maturin
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maturin build -m ./disasm-py/Cargo.toml
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```
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2022-04-06 16:48:21 -07:00
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### Instruction Set
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For those unfamiliar with PowerPC, here are some basics.
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- PowerPC 7xx is a family of RISC CPUs produced from 1997 to 2012.
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- They operate with 32-bit words and every instruction is 32-bits wide.
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- This project focuses (only) on compatibility with the PowerPC 750CL.
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- This chip is famously packaged as codename "Broadway" for the Nintendo Wii.
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- Its predecessor PowerPC 750CXe is used in the Nintendo GameCube.
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- It adds a "paired-singles" SIMD unit and a bunch of other instructions.
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### isa.yaml
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The file [isa.yaml](./isa.yaml) contains a full definition of the PowerPC 750CL instruction set.
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It powers the disassembler, assembler, and Rust/Python bindings code analysis tools.
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Similarly to LLVM TableGen, the program `ppc750cl-genisa` generates a Rust file implementing an instruction decoder.
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