# rabbitizer
[](https://pypi.org/project/rabbitizer/)
MIPS instruction decoder API.
## Features
- Should produce matching assembly.
- Fully written in C for fast decoding.
- The library is completely allocation-less, in other words `rabbitizer`
doesn't allocate in anything in the heap by itself.
- Other language bindings supported in this repo:
- Python bindings
- The minimal Python version is 3.7, older versions are not guaranteed to
work.
- C++ bindings
- Rust bindings
- Simple per-word instruction decoding.
- The library doesn't try to be too smart by processing multiple instructions
at a time.
- Can perform validation checks for instructions.
- Provides many examination/grouping functions for instructions, allowing to
simplify checking characteristics of an instruction and minimizing the need to
check for specific instructions in a hardcoded way.
- Includes some minor tools to build your own pointer/symbol detection.
- Configurable, many features can be turned on and off.
- MIPS instructions features:
- Configurable behavior for the `jalr` instruction, allowing to disassemble
that instruction using an implicit or explicit `rd` register depending if
that register is `$ra` or not.
- Named registers for MIPS VR4300's coprocessors.
- Support for many pseudo-instructions.
- Properly handle move to/from coprocessor instructions.
- Support for numeric, o32, n32 and n64 ABI register names.
- Some workarounds for some specific compilers/assemblers:
- `SN64`:
- `div`/`divu` fix: tweaks a bit the produced `div`, `divu` and `break` instructions.
- Multiple MIPS architectures are supported:
- Main focus on MIPS I, II and III architectures. Partial support for MIPS IV too.
- N64 RSP instruction decoding support.
- RSP decoding has been tested to build back to matching assemblies with [armips](https://github.com/Kingcom/armips/).
- R3000 GTE (PSX's CPU) decoding support.
- R4000 ALLEGREX (PSP's CPU) decoding support.
- R5900 (PS2's Emotion Engine processor) decoding support.
## Non-features
In order to keep it simple and fast the following features will not be added:
- Pseudo-instructions which expands to more than one instruction.
## Installing
### Python bindings
The recommended way to install is using from the PyPi release, via `pip`:
```bash
python3 -m pip install -U rabbitizer
```
If you use a `requirements.txt` file in your repository, then you can add this
library with the following line:
```txt
rabbitizer>=1.11.2,<2.0.0
```
### Development version
The unstable development version is located at the
[develop](https://github.com/Decompollaborate/rabbitizer/tree/develop)
branch. PRs should be made into that branch instead of the main one.
Note that building the Python bindings from source require the Python
development package. Under Ubuntu/Debian based distros it can be installed with:
```bash
apt install python3-dev
```
In case you want to mess with the latest development version without wanting to
clone the repository, then you could use the following command:
```bash
python3 -m pip uninstall rabbitizer
python3 -m pip install git+https://github.com/Decompollaborate/rabbitizer.git@develop
```
NOTE: Installing the development version is not recommended. Proceed at your own
risk.
See this package at <https://pypi.org/project/rabbitizer/>.
### Rust bindings
Add this crate to your project with Cargo:
```bash
cargo add rabbitizer
```
Or you can add it manually to your `Cargo.toml`:
```toml
rabbitizer = "1.11.2"
```
See this crate at <https://crates.io/crates/rabbitizer>.
## References
- MIPS CPU:
- MIPS IV Instruction Set (Revision 3.2): <https://www.cs.cmu.edu/afs/cs/academic/class/15740-f97/public/doc/mips-isa.pdf>
- MIPS Calling Convention Summary: <https://courses.cs.washington.edu/courses/cse410/09sp/examples/MIPSCallingConventionsSummary.pdf>
- mipt-mips pseudo instructions: <https://github.com/MIPT-ILab/mipt-mips/wiki/MIPS-pseudo-instructions>
- IDT R30xx Family Software Reference Manual, page 325 (for `rfe`): <https://psx.arthus.net/docs/R3000.pdf>
- N64's RSP (Reality Signal Processor):
- Nintendo Ultra64 RSP Programmer’s Guide: <https://ultra64.ca/files/documentation/silicon-graphics/SGI_Nintendo_64_RSP_Programmers_Guide.pdf>
- N64brew Reality Signal Processor/CPU Core: <https://n64brew.dev/wiki/Reality_Signal_Processor/CPU_Core>
- R3000 GTE:
- PSYQ SDK headers: <https://github.com/FoxdieTeam/psyq_sdk/blob/master/psyq_4.4/INCLUDE/INLINE_A.H>
- no$psx documentation: <https://problemkaputt.de/psxspx-gte-opcode-summary.htm>
- no$psx documentation: <http://problemkaputt.de/psx-spx.htm#geometrytransformationenginegte>
- <http://www.raphnet.net/electronique/psx_adaptor/Playstation.txt>
- R4000 ALLEGREX:
- ALLEGREX-Instruction_Manual-English <https://github.com/Decompollaborate/rabbitizer/files/11356332/ALLEGREX-Instruction_Manual-English.pdf>
- FPU-Instruction_Manual-English <https://github.com/Decompollaborate/rabbitizer/files/14950191/FPU-Instruction_Manual-English.pdf>
- VFPU-Instruction_Manual-English <https://github.com/Decompollaborate/rabbitizer/files/11356335/VFPU-Instruction_Manual-English.pdf>
- VFPU-Users_Manual-English <https://github.com/Decompollaborate/rabbitizer/files/11356333/VFPU-Users_Manual-English.pdf>
- yet another PlayStationPortable Documentation <http://hitmen.c02.at/files/yapspd/psp_doc/frames.html>
- Chapter "4.8 Allegrex Instructions" <http://hitmen.c02.at/files/yapspd/psp_doc/chap4.html#sec4.8>
- GNU binutils: <https://github.com/bminor/binutils-gdb/compare/011365b...a0176d8>
- R5900:
- EmotionEngine instruction decoding: <https://psi-rockin.github.io/ps2tek/#eeinstructiondecoding>
- Official documentation from Toshiba: <https://wiki.qemu.org/images/2/2a/C790.pdf>
- VU instruction manual: <http://lukasz.dk/files/vu-instruction-manual.pdf>
- GNU binutils: <https://github.com/bminor/binutils-gdb/blob/master/opcodes/mips-opc.c>