// https://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_zSeries/x1472.html
var S390XDWARFRegisters = map[int16]int16{}

func init() {
	// f assigns dwarfregisters[from:to by step] = (base):((to-from)/step+base)
	f := func(from, step, to, base int16) {
		for r := int16(from); r <= to; r += step {
			S390XDWARFRegisters[r] = (r-from)/step + base
		}
	}
	f(REG_R0, 1, REG_R15, 0)

	f(REG_F0, 2, REG_F6, 16)

	Arch:           sys.ArchS390X,
	Init:           buildop,
	Preprocess:     preprocess,
	Assemble:       spanz,
	Progedit:       progedit,
	UnaryDst:       unaryDst,
	DWARFRegisters: S390XDWARFRegisters,