// Inferno utils/5l/obj.c
// https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/obj.c
//
//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
//	Portions Copyright © 1997-1999 Vita Nuova Limited
//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
//	Portions Copyright © 2004,2006 Bruce Ellis
//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
//	Portions Copyright © 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package mips64

import (
	"cmd/internal/objabi"
	"cmd/internal/sys"
	"cmd/link/internal/ld"
	"internal/buildcfg"
)

func Init() (*sys.Arch, ld.Arch) {
	arch := sys.ArchMIPS64
	musl := "/lib/ld-musl-mips64.so.1"
	if buildcfg.GOARCH == "mips64le" {
		arch = sys.ArchMIPS64LE
		musl = "/lib/ld-musl-mips64el.so.1"
	}

	theArch := ld.Arch{
		Funcalign:        funcAlign,
		Maxalign:         maxAlign,
		Minalign:         minAlign,
		Dwarfregsp:       dwarfRegSP,
		Dwarfreglr:       dwarfRegLR,
		Adddynrel:        adddynrel,
		Archinit:         archinit,
		Archreloc:        archreloc,
		Archrelocvariant: archrelocvariant,
		Extreloc:         extreloc,
		Elfreloc1:        elfreloc1,
		ElfrelocSize:     24,
		Elfsetupplt:      elfsetupplt,
		Gentext:          gentext,
		FixUpSyms:        fixUpSyms,
		Machoreloc1:      machoreloc1,

		// TrampLimit is set such that we always run the trampoline
		// generation code. This is necessary since calls to external
		// symbols require the use of trampolines, regardless of the
		// text size.
		TrampLimit: 1,
		Trampoline: trampoline,

		Linuxdynld:     "/lib64/ld64.so.1",
		LinuxdynldMusl: musl,
		Freebsddynld:   "XXX",
		Openbsddynld:   "/usr/libexec/ld.so",
		Netbsddynld:    "XXX",
		Dragonflydynld: "XXX",
		Solarisdynld:   "XXX",
	}

	return arch, theArch
}

func archinit(ctxt *ld.Link) {
	switch ctxt.HeadType {
	default:
		ld.Exitf("unknown -H option: %v", ctxt.HeadType)

	case objabi.Hplan9: /* plan 9 */
		ld.HEADR = 32

		if *ld.FlagTextAddr == -1 {
			*ld.FlagTextAddr = 16*1024 + int64(ld.HEADR)
		}
		if *ld.FlagRound == -1 {
			*ld.FlagRound = 16 * 1024
		}

	case objabi.Hlinux, /* mips64 elf */
		objabi.Hopenbsd:
		ld.Elfinit(ctxt)
		ld.HEADR = ld.ELFRESERVE
		if *ld.FlagTextAddr == -1 {
			*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
		}
		if *ld.FlagRound == -1 {
			*ld.FlagRound = 0x10000
		}
	}

	// .dynsym always has one NULL entry prior to any symbols being added.
	dynSymCount = 1
	gotLocalCount = 0
	gotSymIndex = 0
}
