rdx 125 mtcp/sysdep/sysdep-x86_64.h subq %rax, %rdx; \ rdx 139 mtcp/sysdep/sysdep-x86_64.h subq %rax, %rdx; \ rdx 149 mtcp/sysdep/sysdep-x86_64.h subq %rax, %rdx; \ rdx 150 mtcp/sysdep/sysdep-x86_64.h pushq %rdx; \ rdx 155 mtcp/sysdep/sysdep-x86_64.h popq %rdx; \ rdx 167 mtcp/sysdep/sysdep-x86_64.h subq %rax, %rdx; \