1// Inferno utils/6l/obj.c
2// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/obj.c
3//
4//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
5//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
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 (forsyth@terzarima.net)
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 amd64
32
33import (
34	"cmd/internal/objabi"
35	"cmd/internal/sys"
36	"cmd/link/internal/ld"
37	"fmt"
38)
39
40func Init() {
41	ld.SysArch = sys.ArchAMD64
42	if objabi.GOARCH == "amd64p32" {
43		ld.SysArch = sys.ArchAMD64P32
44	}
45
46	ld.Thearch.Funcalign = funcAlign
47	ld.Thearch.Maxalign = maxAlign
48	ld.Thearch.Minalign = minAlign
49	ld.Thearch.Dwarfregsp = dwarfRegSP
50	ld.Thearch.Dwarfreglr = dwarfRegLR
51
52	ld.Thearch.Adddynrel = adddynrel
53	ld.Thearch.Archinit = archinit
54	ld.Thearch.Archreloc = archreloc
55	ld.Thearch.Archrelocvariant = archrelocvariant
56	ld.Thearch.Asmb = asmb
57	ld.Thearch.Elfreloc1 = elfreloc1
58	ld.Thearch.Elfsetupplt = elfsetupplt
59	ld.Thearch.Gentext = gentext
60	ld.Thearch.Machoreloc1 = machoreloc1
61	ld.Thearch.PEreloc1 = pereloc1
62	ld.Thearch.Lput = ld.Lputl
63	ld.Thearch.Wput = ld.Wputl
64	ld.Thearch.Vput = ld.Vputl
65	ld.Thearch.Append16 = ld.Append16l
66	ld.Thearch.Append32 = ld.Append32l
67	ld.Thearch.Append64 = ld.Append64l
68	ld.Thearch.TLSIEtoLE = tlsIEtoLE
69
70	ld.Thearch.Linuxdynld = "/lib64/ld-linux-x86-64.so.2"
71	ld.Thearch.Freebsddynld = "/libexec/ld-elf.so.1"
72	ld.Thearch.Openbsddynld = "/usr/libexec/ld.so"
73	ld.Thearch.Netbsddynld = "/libexec/ld.elf_so"
74	ld.Thearch.Dragonflydynld = "/usr/libexec/ld-elf.so.2"
75	ld.Thearch.Solarisdynld = "/lib/amd64/ld.so.1"
76}
77
78func archinit(ctxt *ld.Link) {
79	switch ld.Headtype {
80	default:
81		ld.Exitf("unknown -H option: %v", ld.Headtype)
82
83	case objabi.Hplan9: /* plan 9 */
84		ld.HEADR = 32 + 8
85
86		if *ld.FlagTextAddr == -1 {
87			*ld.FlagTextAddr = 0x200000 + int64(ld.HEADR)
88		}
89		if *ld.FlagDataAddr == -1 {
90			*ld.FlagDataAddr = 0
91		}
92		if *ld.FlagRound == -1 {
93			*ld.FlagRound = 0x200000
94		}
95
96	case objabi.Hdarwin: /* apple MACH */
97		ld.Machoinit()
98
99		ld.HEADR = ld.INITIAL_MACHO_HEADR
100		if *ld.FlagRound == -1 {
101			*ld.FlagRound = 4096
102		}
103		if *ld.FlagTextAddr == -1 {
104			*ld.FlagTextAddr = 0x1000000 + int64(ld.HEADR)
105		}
106		if *ld.FlagDataAddr == -1 {
107			*ld.FlagDataAddr = 0
108		}
109
110	case objabi.Hlinux, /* elf64 executable */
111		objabi.Hfreebsd,   /* freebsd */
112		objabi.Hnetbsd,    /* netbsd */
113		objabi.Hopenbsd,   /* openbsd */
114		objabi.Hdragonfly, /* dragonfly */
115		objabi.Hsolaris:   /* solaris */
116		ld.Elfinit(ctxt)
117
118		ld.HEADR = ld.ELFRESERVE
119		if *ld.FlagTextAddr == -1 {
120			*ld.FlagTextAddr = (1 << 22) + int64(ld.HEADR)
121		}
122		if *ld.FlagDataAddr == -1 {
123			*ld.FlagDataAddr = 0
124		}
125		if *ld.FlagRound == -1 {
126			*ld.FlagRound = 4096
127		}
128
129	case objabi.Hnacl:
130		ld.Elfinit(ctxt)
131		*ld.FlagW = true // disable dwarf, which gets confused and is useless anyway
132		ld.HEADR = 0x10000
133		ld.Funcalign = 32
134		if *ld.FlagTextAddr == -1 {
135			*ld.FlagTextAddr = 0x20000
136		}
137		if *ld.FlagDataAddr == -1 {
138			*ld.FlagDataAddr = 0
139		}
140		if *ld.FlagRound == -1 {
141			*ld.FlagRound = 0x10000
142		}
143
144	case objabi.Hwindows: /* PE executable */
145		// ld.HEADR, ld.FlagTextAddr, ld.FlagDataAddr and ld.FlagRound are set in ld.Peinit
146		return
147	}
148
149	if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
150		fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
151	}
152}
153