29dc1f1bd2
- README.md: Complete project overview with plugin status - ARCHITECTURE.md: Fixed register tables (CNTR in REG1, not REG2) - GETTING_STARTED.md: r2-native workflow, removed Python disasm refs - PRACTICAL_EXAMPLE.md: Uses verified open21xx opcodes with bit layouts - ROM_ANALYSIS_WALKTHROUGH.md: Updated format detection and r2 commands - r2plugin/README.md: Simplified, points to assembler test ROM - gen_isa_test.py: All opcodes from open21xx assembler with labels
48 lines
1.4 KiB
Markdown
48 lines
1.4 KiB
Markdown
# ADSP-219x Reverse Engineering Toolkit
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Radare2 architecture plugin and reference materials for reverse
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engineering ADSP-2191 firmware.
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## Contents
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r2plugin/ Native radare2 arch plugin (C, GNU style)
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examples/ ADSP-2191 assembly examples (FIR, IIR, FFT, Viterbi)
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+ assembler-verified ISA test ROM
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testrom/ Test ROM generator for plugin validation
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docs/ Architecture reference, opcode tables, walkthrough guides
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## Quick Start
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cd r2plugin && make && make install
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r2 -a adsp219x -b 24 examples/isa_test.bin
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[0x00000000]> pd 48
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## Requirements
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- Radare2 >= 5.8.0 (RArchPlugin API)
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- GCC
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## Plugin Status
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Currently decodes: NOP, IDLE, Type 1 (multifunction), Type 3
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(direct memory), Type 4 (compute + memory), Type 6/7 (immediate
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loads), Type 10/10a (jump/call), Type 17 (reg move), Type 20
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(RTS/RTI).
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Work in progress: Type 9/9a (standalone compute), Type 11
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(DO UNTIL), Type 15 (shift), Type 18 (mode control), Type 25
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(saturate).
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## Assembler
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The examples were assembled with [open21xx](https://github.com/wodz/open21xx),
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an open-source assembler/linker for ADSP-218x/219x. Build
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instructions are in the open21xx README. The resulting ELF is
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converted to raw binary with `dd` (extract the `int_pm` section).
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## License
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Plugin code: LGPL-3.0-only. Example code from Analog Devices
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application notes. Documentation extracts from the ADSP-219x
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DSP Instruction Set Reference.
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