1,885
edits
Changes
→General-Purpose Registers
* For all other instructions, it is a "zero" register, which returns 0 when read and discards data when written - named rzr (xzr, wzr)
Usage during [[SyscallSyscalls|syscall]]/function call:
* '''r0-r7 are used for arguments and return values'''
* '''For syscalls, the syscall number is in r8'''
