// license that can be found in the LICENSE file.

package sym

import (
	"cmd/internal/obj"
	"internal/buildcfg"
)

const (
	SymVerABI0        = 0
	SymVerABIInternal = 1
	SymVerABICount    = 2  // Number of internal ABIs
	SymVerStatic      = 10 // Minimum version used by static (file-local) syms
)

func ABIToVersion(abi obj.ABI) int {
	switch abi {
	case obj.ABI0:
		return SymVerABI0

	if ctxt.IsPPC64() {
		ctxt.mkArchSym("TOC", 0, &ctxt.TOC)

		ctxt.DotTOC = make([]loader.Sym, ctxt.MaxVersion()+1)
		for i := 0; i <= ctxt.MaxVersion(); i++ {
			if i >= sym.SymVerABICount && i < sym.SymVerStatic { // these versions are not used currently
				continue
			}
			ctxt.mkArchSymVec(".TOC.", i, ctxt.DotTOC)
		}
	}
	if ctxt.IsElf() {
		ctxt.mkArchSym(".rel", 0, &ctxt.Rel)

		tocAddr := int64(Segdata.Vaddr) + 0x8000
		if gotAddr := ldr.SymValue(ctxt.GOT); gotAddr != 0 {
			tocAddr = gotAddr + 0x8000
		}
		for i := range ctxt.DotTOC {
			if i >= sym.SymVerABICount && i < sym.SymVerStatic { // these versions are not used currently
				continue
			}
			if toc := ldr.Lookup(".TOC.", i); toc != 0 {
				ldr.SetSymValue(toc, tocAddr)
			}
		}
	}