R13      uint64
	R12      uint64
	Rbp      uint64
	Rbx      uint64
	R11      uint64
	R10      uint64
	R9       uint64
	R8       uint64
	Rax      uint64
	Rcx      uint64
	Rdx      uint64
	Rsi      uint64
	Rdi      uint64
	Orig_rax uint64
	Rip      uint64
	Cs       uint64
	Eflags   uint64
	Rsp      uint64
	Ss       uint64
	Fs_base  uint64
	Gs_base  uint64
	Ds       uint64

// ref via "__imp_XYZ", or a direct ref to "XYZ". Here's an example of
// an indirect ref (this is an excerpt from objdump -ldr):
//
//	     1c1: 48 89 c6                     	movq	%rax, %rsi
//	     1c4: ff 15 00 00 00 00            	callq	*(%rip)
//			00000000000001c6:  IMAGE_REL_AMD64_REL32	__imp__errno
//
// In the assembly above, the code loads up the value of __imp_errno