__prev_arg
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:title: Shellcode Compiler Runtime

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void* __prev_arg(void* ptr, size_t size);
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Returns a pointer to the previous argument given the pointer to the current argument, `ptr`, and
the size of the previous argument, `size`.  This intrinsic can be used to find the previous
argument regardless of the direction of stack growth.

See also
--------
link:next_arg.html[next_arg]