1 // Inferno utils/8l/obj.c 2 // https://bitbucket.org/inferno-os/inferno-os/src/default/utils/8l/obj.c 3 // 4 // Copyright 1994-1999 Lucent Technologies Inc. All rights reserved. 5 // Portions Copyright 1995-1997 C H Forsyth (forsyth (a] 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 (a] 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 31 package x86 32 33 import ( 34 "cmd/internal/obj" 35 "cmd/internal/sys" 36 "cmd/link/internal/ld" 37 "fmt" 38 ) 39 40 func Init() { 41 ld.SysArch = sys.Arch386 42 43 ld.Thearch.Funcalign = funcAlign 44 ld.Thearch.Maxalign = maxAlign 45 ld.Thearch.Minalign = minAlign 46 ld.Thearch.Dwarfregsp = dwarfRegSP 47 ld.Thearch.Dwarfreglr = dwarfRegLR 48 49 ld.Thearch.Adddynrel = adddynrel 50 ld.Thearch.Archinit = archinit 51 ld.Thearch.Archreloc = archreloc 52 ld.Thearch.Archrelocvariant = archrelocvariant 53 ld.Thearch.Asmb = asmb 54 ld.Thearch.Elfreloc1 = elfreloc1 55 ld.Thearch.Elfsetupplt = elfsetupplt 56 ld.Thearch.Gentext = gentext 57 ld.Thearch.Machoreloc1 = machoreloc1 58 ld.Thearch.PEreloc1 = pereloc1 59 ld.Thearch.Lput = ld.Lputl 60 ld.Thearch.Wput = ld.Wputl 61 ld.Thearch.Vput = ld.Vputl 62 ld.Thearch.Append16 = ld.Append16l 63 ld.Thearch.Append32 = ld.Append32l 64 ld.Thearch.Append64 = ld.Append64l 65 66 ld.Thearch.Linuxdynld = "/lib/ld-linux.so.2" 67 ld.Thearch.Freebsddynld = "/usr/libexec/ld-elf.so.1" 68 ld.Thearch.Openbsddynld = "/usr/libexec/ld.so" 69 ld.Thearch.Netbsddynld = "/usr/libexec/ld.elf_so" 70 ld.Thearch.Solarisdynld = "/lib/ld.so.1" 71 } 72 73 func archinit(ctxt *ld.Link) { 74 switch ld.Headtype { 75 default: 76 ld.Exitf("unknown -H option: %v", ld.Headtype) 77 78 case obj.Hplan9: /* plan 9 */ 79 ld.HEADR = 32 80 81 if *ld.FlagTextAddr == -1 { 82 *ld.FlagTextAddr = 4096 + int64(ld.HEADR) 83 } 84 if *ld.FlagDataAddr == -1 { 85 *ld.FlagDataAddr = 0 86 } 87 if *ld.FlagRound == -1 { 88 *ld.FlagRound = 4096 89 } 90 91 case obj.Hdarwin: /* apple MACH */ 92 ld.Machoinit() 93 94 ld.HEADR = ld.INITIAL_MACHO_HEADR 95 if *ld.FlagTextAddr == -1 { 96 *ld.FlagTextAddr = 4096 + int64(ld.HEADR) 97 } 98 if *ld.FlagDataAddr == -1 { 99 *ld.FlagDataAddr = 0 100 } 101 if *ld.FlagRound == -1 { 102 *ld.FlagRound = 4096 103 } 104 105 case obj.Hlinux, /* elf32 executable */ 106 obj.Hfreebsd, 107 obj.Hnetbsd, 108 obj.Hopenbsd: 109 ld.Elfinit(ctxt) 110 111 ld.HEADR = ld.ELFRESERVE 112 if *ld.FlagTextAddr == -1 { 113 *ld.FlagTextAddr = 0x08048000 + int64(ld.HEADR) 114 } 115 if *ld.FlagDataAddr == -1 { 116 *ld.FlagDataAddr = 0 117 } 118 if *ld.FlagRound == -1 { 119 *ld.FlagRound = 4096 120 } 121 122 case obj.Hnacl: 123 ld.Elfinit(ctxt) 124 ld.HEADR = 0x10000 125 ld.Funcalign = 32 126 if *ld.FlagTextAddr == -1 { 127 *ld.FlagTextAddr = 0x20000 128 } 129 if *ld.FlagDataAddr == -1 { 130 *ld.FlagDataAddr = 0 131 } 132 if *ld.FlagRound == -1 { 133 *ld.FlagRound = 0x10000 134 } 135 136 case obj.Hwindows, obj.Hwindowsgui: /* PE executable */ 137 ld.Peinit(ctxt) 138 139 ld.HEADR = ld.PEFILEHEADR 140 if *ld.FlagTextAddr == -1 { 141 *ld.FlagTextAddr = ld.PEBASE + int64(ld.PESECTHEADR) 142 } 143 if *ld.FlagDataAddr == -1 { 144 *ld.FlagDataAddr = 0 145 } 146 if *ld.FlagRound == -1 { 147 *ld.FlagRound = ld.PESECTALIGN 148 } 149 } 150 151 if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 { 152 fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound)) 153 } 154 } 155
