let's say I have a file full of ARM processor instructions which are already represented as bytes. What is the best way to execute them directly with qemu-arm?
Thanks!
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Perhaps asm `.incbin` (if that's the right GAS directive) into an object file you can link into an executable. (With the `_start` entry point on that code.) – Peter Cordes Jul 13 '20 at 17:28
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arm instructions are only a tiny fraction of the problem its like saying I have a book written using the alphabet, how do I read a book. The instruction set just gets you to the memory space and peripherals so executing instructinos can/will simply crash if you dont match it up with the system it was built/designed for. – old_timer Jul 13 '20 at 20:05
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If your data is a bootable image, qemu can be started directly with the image file:
qemu-system-arm -hda data.img
where data.img is the name of your binary file.
Otherwise, as Peter Cordes wrote, the easiest way would be to create an ELF executable (see How to run a bare metal ELF file on QEMU?) and start it via
qemu-system-arm -kernel data.elf
where data.elf is the name of the created ELF executable.
(too long for a comment, so I posted it as an answer)
fcdt
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Your command lines won't work, because you haven't told QEMU which machine type to use... – Peter Maydell Jul 15 '20 at 11:21
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