dev := uint64(sys.Rdev) // May be int32 or uint32
		switch runtime.GOOS {
		case "aix":
			var major, minor uint32
			major = uint32((dev & 0x3fffffff00000000) >> 32)
			minor = uint32((dev & 0x00000000ffffffff) >> 0)
			h.Devmajor, h.Devminor = int64(major), int64(minor)
		case "linux":
			// Copied from golang.org/x/sys/unix/dev_linux.go.
			major := uint32((dev & 0x00000000000fff00) >> 8)

	floatsave         floatingsavearea
	seggs             uint32
	segfs             uint32
	seges             uint32
	segds             uint32
	edi               uint32
	esi               uint32
	ebx               uint32
	edx               uint32
	ecx               uint32
	eax               uint32
	ebp               uint32
	eip               uint32
	segcs             uint32
	eflags            uint32

	SizeOfCode                  uint32
	SizeOfInitializedData       uint32
	SizeOfUninitializedData     uint32
	AddressOfEntryPoint         uint32
	BaseOfCode                  uint32
	BaseOfData                  uint32
	ImageBase                   uint32
	SectionAlignment            uint32
	FileAlignment               uint32
	MajorOperatingSystemVersion uint16
	MinorOperatingSystemVersion uint16

// https://lemire.me/blog/2016/06/30/fast-random-shuffling
func (r *pcgRand) uint32n(n uint32) uint32 {
	v := r.uint32()
	prod := uint64(v) * uint64(n)
	low := uint32(prod)
	if low < n {
		thresh := uint32(-int32(n)) % n
		for low < thresh {
			v = r.uint32()
			prod = uint64(v) * uint64(n)
			low = uint32(prod)
		}
	}
	return uint32(prod >> 32)
}

// exp2 generates n with probability 1/2^(n+1).

}

type context struct {
	contextflags uint32
	r0           uint32
	r1           uint32
	r2           uint32
	r3           uint32
	r4           uint32
	r5           uint32
	r6           uint32
	r7           uint32
	r8           uint32
	r9           uint32
	r10          uint32
	r11          uint32
	r12          uint32

	spr  uint32
	lrr  uint32
	pc   uint32
	cpsr uint32

	fpscr   uint32

		len(embeds) uint32
		for each embed:
			pattern - string offset
			position - file, offset, line, column - uint32
		len(directives) uint32
		for each directive:
			text - string offset
			position - file, offset, line, column - uint32
[string table]
0xFF (marker)

The following is the format for a single indexed package:

“go index v0\n”
str uint32 - offset of string table

//sys	GetLengthSid(sid *SID) (len uint32) = advapi32.GetLengthSid
//sys	CopySid(destSidLen uint32, destSid *SID, srcSid *SID) (err error) = advapi32.CopySid
//sys	AllocateAndInitializeSid(identAuth *SidIdentifierAuthority, subAuth byte, subAuth0 uint32, subAuth1 uint32, subAuth2 uint32, subAuth3 uint32, subAuth4 uint32, subAuth5 uint32, subAuth6 uint32, subAuth7 uint32, sid **SID) (err error) = advapi32.AllocateAndInitializeSid

			obj.ANOP:
			break
		}
	}
}

func (c *ctxt5) asmout(p *obj.Prog, o *Optab, out []uint32) {
	c.printp = p
	o1 := uint32(0)
	o2 := uint32(0)
	o3 := uint32(0)
	o4 := uint32(0)
	o5 := uint32(0)
	o6 := uint32(0)
	if false { /*debug['P']*/
		fmt.Printf("%x: %v\ttype %d\n", uint32(p.Pc), p, o.type_)
	}
	switch o.type_ {
	default:
		c.ctxt.Diag("%v: unknown asm %d", p, o.type_)

}

func rsh5Mask32Ux64(v uint32, s uint64) uint32 {
	// riscv64:"SRLW",-"AND\t",-"SLTIU",-"SRL\t"
	return v >> (s & 31)
}

func rshMask32x64(v int32, s uint64) int32 {
	// arm64:"ASR",-"AND"
	// ppc64x:"ISEL",-"ORN"
	// riscv64:"SRAW","OR","SLTIU"
	// s390x:-"RISBGZ",-"AND",-"LOCGR"
	return v >> (s & 63)
}

func rsh5Mask32x64(v int32, s uint64) int32 {
	// riscv64:"SRAW",-"OR",-"SLTIU"

	o0 |= uint32(p.To.Reg&0x1f) << 21      // T
	o0 |= uint32(p.From.Offset&0x1f) << 11 // UIM
	out[0] = o0
}

// lxvp XTp,DQ(RA)
func type_lxvp(c *ctxt9, p *obj.Prog, t *Optab, out *[5]uint32) {
	o0 := GenOpcodes[p.As-AXXSETACCZ]
	o0 |= uint32((p.To.Reg>>5)&0x1) << 21       // TX
	o0 |= uint32((p.To.Reg>>1)&0xf) << 22       // Tp
	o0 |= uint32((p.From.Offset>>4)&0xfff) << 4 // DQ
	o0 |= uint32(p.From.Reg&0x1f) << 16         // RA