Obtain the register ID used for the nth function call parameter. Since actual calling convention may vary depending on the binaries, this function only returns a generally used register for the given architecture and the file format.

Check if the given register is non-volatile register in the given binary. Non-volatile registers are preserved by callee, i.e., callee-saved registers.

Obtain the register ID used for storing syscall return values.

Obtain the register ID used for the nth syscall parameter.

Obtain the register ID used for storing a syscall number.

Obtain the list of volatile register IDs