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| ==GNU ARM toolchain== | | ==GNU ARM toolchain== |
| Working with the ARM platform requires a special toolchain. The GNU ARM toolchain has all the basic tools needed to build and examine software on the iPod.
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| ===Obtaining===
| | Use gcc-arm-embedded from your Linux distribution package manager. |
| The GNU ARM toolchain can be downloaded from http://www.gnuarm.com/. You can either download source or binaries. Put the binaries in your system path.
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| ===Assembling===
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| <pre>
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| arm-elf-as -o test.o test.asm
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| arm-elf-ld -e 0 -Ttext=0 -o test.elf test.o | |
| arm-elf-objcopy -O binary test.elf test.bin
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| </pre>
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| ===Disassembling===
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| <pre>
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| arm-elf-objdump -bbinary -marmv4 -D test.bin > test.asm
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| </pre>
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| ==IDA Pro demo==
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| ===IDA Pro 5.7 paid===
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| This is the best version if you can pay. One of the main advantages over its demo version is that you can save project files.
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| ===IDA Pro 5.7 demo===
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| This is the best version if you don't want to pay. It can't save or open binary files, but there is a workaround to opening binaries.
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| The IDA Pro demo can't open raw ARM files but it can open ELF files. We need to convert the raw binaries to ELF binaries as a workaround. Assuming the input file is called "dump.bin" and the output will be called "dump.elf", run these commands:
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| <pre>
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| arm-elf-objcopy --change-addresses=0xff810000 -I binary -O elf32-littlearm -B arm dump.bin dump.elf
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| arm-elf-objcopy --set-section-flags .data=code dump.elf
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| </pre>
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| ===IDA Pro 4.9 freeware===
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| This version is tempting to download but useless since it doesn't support ARM.
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| ==Helpful pages==
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| http://chdk.wikia.com/wiki/GPL_Disassembling
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| http://www.dwelch.com/ipod/
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Latest revision as of 21:44, 25 September 2025
Use gcc-arm-embedded from your Linux distribution package manager.