package sym

import (
	"cmd/internal/objabi"
	"cmd/internal/sys"
	"debug/elf"
	"debug/macho"
)

// RelocVariant is a linker-internal variation on a relocation.
type RelocVariant uint8

const (
	RV_NONE RelocVariant = iota
	RV_POWER_LO
	RV_POWER_HI
	RV_POWER_HA
	RV_POWER_DS

	// RV_390_DBL is a s390x-specific relocation variant that indicates that

			out.Write64(uint64(elf.R_390_GOTENT) | uint64(elfsym)<<32)
		} else {
			return false
		}
	case objabi.R_PCREL, objabi.R_PCRELDBL, objabi.R_CALL:
		elfrel := elf.R_390_NONE
		rVariant := ldr.RelocVariant(s, ri)
		isdbl := rVariant&sym.RV_TYPE_MASK == sym.RV_390_DBL
		// TODO(mundaym): all DBL style relocations should be
		// signalled using the variant - see issue 14218.
		switch r.Type {

		}
		return applyrel(target.Arch, ldr, rt, r.Off(), s, val, t), noExtReloc, isOk
	}

	return val, 0, false
}

func archrelocvariant(*ld.Target, *loader.Loader, loader.Reloc, sym.RelocVariant, loader.Sym, int64, []byte) int64 {
	return -1
}

func extreloc(target *ld.Target, ldr *loader.Loader, r loader.Reloc, s loader.Sym) (loader.ExtReloc, bool) {
	switch r.Type() {

func (l *Loader) SetRelocVariant(s Sym, ri int, v sym.RelocVariant) {
	// sanity check
	if relocs := l.Relocs(s); ri >= relocs.Count() {
		panic("invalid relocation ID")
	}
	if l.relocVariant == nil {
		l.relocVariant = make(map[relocId]sym.RelocVariant)
	}
	if v != 0 {
		l.relocVariant[relocId{s, ri}] = v
	} else {
		delete(l.relocVariant, relocId{s, ri})
	}
}

		return int64(val&0xfc000000 | (((t >> 2) & 0xffff) << 10) | (((t >> 2) & 0x3ff0000) >> 16)), noExtReloc, isOk
	}

	return val, 0, false
}

func archrelocvariant(*ld.Target, *loader.Loader, loader.Reloc, sym.RelocVariant, loader.Sym, int64, []byte) int64 {
	return -1
}

func extreloc(target *ld.Target, ldr *loader.Loader, r loader.Reloc, s loader.Sym) (loader.ExtReloc, bool) {
	switch r.Type() {
	case objabi.R_LOONG64_ADDR_HI,

		t := ldr.SymValue(rs) + r.Add()
		return int64(val&0xfc000000 | (t>>2)&^0xfc000000), noExtReloc, isOk
	}

	return val, 0, false
}

func archrelocvariant(*ld.Target, *loader.Loader, loader.Reloc, sym.RelocVariant, loader.Sym, int64, []byte) int64 {
	return -1
}

func extreloc(target *ld.Target, ldr *loader.Loader, r loader.Reloc, s loader.Sym) (loader.ExtReloc, bool) {
	switch r.Type() {
	case objabi.R_ADDRMIPS,

}

func archreloc(*ld.Target, *loader.Loader, *ld.ArchSyms, loader.Reloc, loader.Sym, int64) (int64, int, bool) {
	return -1, 0, false
}

func archrelocvariant(*ld.Target, *loader.Loader, loader.Reloc, sym.RelocVariant, loader.Sym, int64, []byte) int64 {
	log.Fatalf("unexpected relocation variant")
	return -1
}

func elfsetupplt(ctxt *ld.Link, ldr *loader.Loader, plt, got *loader.SymbolBuilder, dynamic loader.Sym) {

		second = (second &^ secondImmMask) | int64(uint32(secondImm))

		return second<<32 | auipc, 0, true
	}

	return val, 0, false
}

func archrelocvariant(*ld.Target, *loader.Loader, loader.Reloc, sym.RelocVariant, loader.Sym, int64, []byte) int64 {
	log.Fatalf("archrelocvariant")
	return -1
}

func extreloc(target *ld.Target, ldr *loader.Loader, r loader.Reloc, s loader.Sym) (loader.ExtReloc, bool) {
	switch r.Type() {

}

func archreloc(*ld.Target, *loader.Loader, *ld.ArchSyms, loader.Reloc, loader.Sym, int64) (int64, int, bool) {
	return -1, 0, false
}

func archrelocvariant(*ld.Target, *loader.Loader, loader.Reloc, sym.RelocVariant, loader.Sym, int64, []byte) int64 {
	log.Fatalf("unexpected relocation variant")
	return -1
}

func elfsetupplt(ctxt *ld.Link, ldr *loader.Loader, plt, got *loader.SymbolBuilder, dynamic loader.Sym) {

		}
		return int64(braddoff(int32(0xff000000&uint32(r.Add())), int32(0xffffff&t))), noExtReloc, isOk
	}

	return val, 0, false
}

func archrelocvariant(*ld.Target, *loader.Loader, loader.Reloc, sym.RelocVariant, loader.Sym, int64, []byte) int64 {
	log.Fatalf("unexpected relocation variant")
	return -1
}

func extreloc(target *ld.Target, ldr *loader.Loader, r loader.Reloc, s loader.Sym) (loader.ExtReloc, bool) {