func (c *sigctxt) r7() uint64  { return c.regs().gpr[7] }
func (c *sigctxt) r8() uint64  { return c.regs().gpr[8] }
func (c *sigctxt) r9() uint64  { return c.regs().gpr[9] }
func (c *sigctxt) r10() uint64 { return c.regs().gpr[10] }
func (c *sigctxt) r11() uint64 { return c.regs().gpr[11] }
func (c *sigctxt) r12() uint64 { return c.regs().gpr[12] }
func (c *sigctxt) r13() uint64 { return c.regs().gpr[13] }

func (c *sigctxt) r14() uint64 { return c.regs().sc_reg[14] }
func (c *sigctxt) r15() uint64 { return c.regs().sc_reg[15] }
func (c *sigctxt) r16() uint64 { return c.regs().sc_reg[16] }
func (c *sigctxt) r17() uint64 { return c.regs().sc_reg[17] }
func (c *sigctxt) r18() uint64 { return c.regs().sc_reg[18] }
func (c *sigctxt) r19() uint64 { return c.regs().sc_reg[19] }
func (c *sigctxt) r20() uint64 { return c.regs().sc_reg[20] }

func (c *sigctxt) r12() uint64 { return (uint64)(c.regs().sc_x[12]) }
func (c *sigctxt) r13() uint64 { return (uint64)(c.regs().sc_x[13]) }
func (c *sigctxt) r14() uint64 { return (uint64)(c.regs().sc_x[14]) }
func (c *sigctxt) r15() uint64 { return (uint64)(c.regs().sc_x[15]) }
func (c *sigctxt) r16() uint64 { return (uint64)(c.regs().sc_x[16]) }
func (c *sigctxt) r17() uint64 { return (uint64)(c.regs().sc_x[17]) }

func (c *sigctxt) t2() uint64  { return uint64(c.regs().sc_t[2]) }
func (c *sigctxt) s0() uint64  { return uint64(c.regs().sc_s[0]) }
func (c *sigctxt) s1() uint64  { return uint64(c.regs().sc_s[1]) }
func (c *sigctxt) a0() uint64  { return uint64(c.regs().sc_a[0]) }
func (c *sigctxt) a1() uint64  { return uint64(c.regs().sc_a[1]) }
func (c *sigctxt) a2() uint64  { return uint64(c.regs().sc_a[2]) }

func (c *sigctxt) r19() uint64 { return c.regs().mc_gpregs.gp_x[19] }
func (c *sigctxt) r20() uint64 { return c.regs().mc_gpregs.gp_x[20] }
func (c *sigctxt) r21() uint64 { return c.regs().mc_gpregs.gp_x[21] }
func (c *sigctxt) r22() uint64 { return c.regs().mc_gpregs.gp_x[22] }
func (c *sigctxt) r23() uint64 { return c.regs().mc_gpregs.gp_x[23] }
func (c *sigctxt) r24() uint64 { return c.regs().mc_gpregs.gp_x[24] }

}

// PtraceSetRegsMips sets the registers used by mips binaries.
func PtraceSetRegsMips(pid int, regs *PtraceRegsMips) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsMips64 is the registers used by mips64 binaries.
type PtraceRegsMips64 struct {
	Regs     [32]uint64
	Lo       uint64
	Hi       uint64
	Epc      uint64
	Badvaddr uint64
	Status   uint64

	return ptracePtr(PTRACE_GETREGS, pid, 0, unsafe.Pointer(regsout))
}

// PtraceSetRegs386 sets the registers used by 386 binaries.
func PtraceSetRegs386(pid int, regs *PtraceRegs386) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsAmd64 is the registers used by amd64 binaries.
type PtraceRegsAmd64 struct {
	R15      uint64
	R14      uint64
	R13      uint64
	R12      uint64

}

// PtraceSetRegsMipsle sets the registers used by mipsle binaries.
func PtraceSetRegsMipsle(pid int, regs *PtraceRegsMipsle) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsMips64le is the registers used by mips64le binaries.
type PtraceRegsMips64le struct {
	Regs     [32]uint64
	Lo       uint64
	Hi       uint64
	Epc      uint64
	Badvaddr uint64
	Status   uint64

		if e.ID != vid {
			continue
		}
		if e.regs[0] == r {
			// Already known and highest priority
			return
		}
		for j := 1; j < len(e.regs); j++ {
			if e.regs[j] == r {
				// Move from lower priority to top priority
				copy(e.regs[1:], e.regs[:j])
				e.regs[0] = r
				return
			}
		}
		copy(e.regs[1:], e.regs[:])
		e.regs[0] = r
		return
	}

	l.regs = append(l.regs, regPos{saveOp: op, restoreOp: op, reg: reg, pos: l.stack})
	l.stack += size
}

func (l *layout) add2(sop, rop, reg string, size int) {
	l.regs = append(l.regs, regPos{saveOp: sop, restoreOp: rop, reg: reg, pos: l.stack})
	l.stack += size
}

func (l *layout) addSpecial(save, restore string, size int) {