gcNum  int16 // GC register map number (dense numbering of registers that can contain pointers)
	name   string
}

func (r *Register) String() string {
	return r.name
}

// ObjNum returns the register number from cmd/internal/obj/$ARCH that
// corresponds to this register.
func (r *Register) ObjNum() int16 {
	return r.objNum
}

	gcRegMapSize := int16(0)
	for _, r := range c.registers {
		if r.gcNum+1 > gcRegMapSize {
			gcRegMapSize = r.gcNum + 1
		}
	}
	c.GCRegMap = make([]*Register, gcRegMapSize)
	for i, r := range c.registers {
		if r.gcNum != -1 {
			c.GCRegMap[r.gcNum] = &c.registers[i]
		}
	}

	return c
}

func (c *Config) Ctxt() *obj.Link { return c.ctxt }