Sketch arm support #151
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Sketch arm support #151
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- if we will construct syscall from scratch - "unused" args (we have 6 registers in total - but syscall can use less) will be zeroed - tail_inject will set all registers - potentially overwriting registers unused for this syscall but having some important information for execution - after this patch I was able to run bash in the sandbox on ARM (with few additional tweaks) - without it shell just behaves "randomly" (it exits immediately, but in some different setups it can work in weird ways - which confirms the explanation of registers overwrite as this will lead to arbitrary UB)
- hide some syscalls behind compile time directives - implement faccessat and fstatat syscalls
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Implement few extra arm-specific syscalls and fix compilation by hiding some methods behind flags
Now it works on my machine: