Working with binaries
Compiling for 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.
Obtaining
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.
Assembling
arm-elf-as -o test.o test.asm arm-elf-ld -e 0 -Ttext=0 -o test.elf test.o arm-elf-objcopy -O binary test.elf test.bin
Disassembling
arm-elf-objdump -bbinary -marmv4 -D test.bin > test.asm
Preparing for IDA Pro demo
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:
arm-elf-objcopy --change-addresses=0xff810000 -I binary -O elf32-littlearm -B arm dump.bin dump.elf arm-elf-objcopy --set-section-flags .data=code dump.elf
