1// Inferno utils/5l/obj.c
2// https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/obj.c
3//
4//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
5//	Portions Copyright © 1995-1997 C H Forsyth ([email protected])
6//	Portions Copyright © 1997-1999 Vita Nuova Limited
7//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
8//	Portions Copyright © 2004,2006 Bruce Ellis
9//	Portions Copyright © 2005-2007 C H Forsyth ([email protected])
10//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
11//	Portions Copyright © 2009 The Go Authors. All rights reserved.
12//
13// Permission is hereby granted, free of charge, to any person obtaining a copy
14// of this software and associated documentation files (the "Software"), to deal
15// in the Software without restriction, including without limitation the rights
16// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
17// copies of the Software, and to permit persons to whom the Software is
18// furnished to do so, subject to the following conditions:
19//
20// The above copyright notice and this permission notice shall be included in
21// all copies or substantial portions of the Software.
22//
23// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
26// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
28// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29// THE SOFTWARE.
30
31package mips64
32
33import (
34	"cmd/internal/objabi"
35	"cmd/internal/sys"
36	"cmd/link/internal/ld"
37	"internal/buildcfg"
38)
39
40func Init() (*sys.Arch, ld.Arch) {
41	arch := sys.ArchMIPS64
42	musl := "/lib/ld-musl-mips64.so.1"
43	if buildcfg.GOARCH == "mips64le" {
44		arch = sys.ArchMIPS64LE
45		musl = "/lib/ld-musl-mips64el.so.1"
46	}
47
48	theArch := ld.Arch{
49		Funcalign:        funcAlign,
50		Maxalign:         maxAlign,
51		Minalign:         minAlign,
52		Dwarfregsp:       dwarfRegSP,
53		Dwarfreglr:       dwarfRegLR,
54		Adddynrel:        adddynrel,
55		Archinit:         archinit,
56		Archreloc:        archreloc,
57		Archrelocvariant: archrelocvariant,
58		Extreloc:         extreloc,
59		Gentext:          gentext,
60		Machoreloc1:      machoreloc1,
61
62		ELF: ld.ELFArch{
63			Linuxdynld:     "/lib64/ld64.so.1",
64			LinuxdynldMusl: musl,
65			Freebsddynld:   "XXX",
66			Openbsddynld:   "/usr/libexec/ld.so",
67			Netbsddynld:    "XXX",
68			Dragonflydynld: "XXX",
69			Solarisdynld:   "XXX",
70
71			Reloc1:    elfreloc1,
72			RelocSize: 24,
73			SetupPLT:  elfsetupplt,
74
75			// Historically GNU ld creates a read-only
76			// .dynamic section.
77			DynamicReadOnly: true,
78		},
79	}
80
81	return arch, theArch
82}
83
84func archinit(ctxt *ld.Link) {
85	switch ctxt.HeadType {
86	default:
87		ld.Exitf("unknown -H option: %v", ctxt.HeadType)
88
89	case objabi.Hplan9: /* plan 9 */
90		ld.HEADR = 32
91		if *ld.FlagRound == -1 {
92			*ld.FlagRound = 16 * 1024
93		}
94		if *ld.FlagTextAddr == -1 {
95			*ld.FlagTextAddr = ld.Rnd(16*1024, *ld.FlagRound) + int64(ld.HEADR)
96		}
97
98	case objabi.Hlinux, /* mips64 elf */
99		objabi.Hopenbsd:
100		ld.Elfinit(ctxt)
101		ld.HEADR = ld.ELFRESERVE
102		if *ld.FlagRound == -1 {
103			*ld.FlagRound = 0x10000
104		}
105		if *ld.FlagTextAddr == -1 {
106			*ld.FlagTextAddr = ld.Rnd(0x10000, *ld.FlagRound) + int64(ld.HEADR)
107		}
108	}
109
110	dynSymCount = 0
111	gotLocalCount = 0
112	gotSymIndex = 0
113}
114