1 // Inferno utils/5l/obj.c 2 // http://code.google.com/p/inferno-os/source/browse/utils/5l/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 arm64 32 33 import ( 34 "cmd/internal/obj" 35 "cmd/link/internal/ld" 36 "fmt" 37 "log" 38 ) 39 40 // Reading object files. 41 42 func Main() { 43 linkarchinit() 44 ld.Ldmain() 45 } 46 47 func linkarchinit() { 48 ld.Thestring = obj.Getgoarch() 49 ld.Thelinkarch = &ld.Linkarm64 50 51 ld.Thearch.Thechar = thechar 52 ld.Thearch.Ptrsize = ld.Thelinkarch.Ptrsize 53 ld.Thearch.Intsize = ld.Thelinkarch.Ptrsize 54 ld.Thearch.Regsize = ld.Thelinkarch.Regsize 55 ld.Thearch.Funcalign = FuncAlign 56 ld.Thearch.Maxalign = MaxAlign 57 ld.Thearch.Minlc = MINLC 58 ld.Thearch.Dwarfregsp = DWARFREGSP 59 ld.Thearch.Dwarfreglr = DWARFREGLR 60 61 ld.Thearch.Adddynrel = adddynrel 62 ld.Thearch.Archinit = archinit 63 ld.Thearch.Archreloc = archreloc 64 ld.Thearch.Archrelocvariant = archrelocvariant 65 ld.Thearch.Asmb = asmb 66 ld.Thearch.Elfreloc1 = elfreloc1 67 ld.Thearch.Elfsetupplt = elfsetupplt 68 ld.Thearch.Gentext = gentext 69 ld.Thearch.Machoreloc1 = machoreloc1 70 ld.Thearch.Lput = ld.Lputl 71 ld.Thearch.Wput = ld.Wputl 72 ld.Thearch.Vput = ld.Vputl 73 74 ld.Thearch.Linuxdynld = "/lib/ld-linux-aarch64.so.1" 75 76 ld.Thearch.Freebsddynld = "XXX" 77 ld.Thearch.Openbsddynld = "XXX" 78 ld.Thearch.Netbsddynld = "XXX" 79 ld.Thearch.Dragonflydynld = "XXX" 80 ld.Thearch.Solarisdynld = "XXX" 81 } 82 83 func archinit() { 84 // getgoextlinkenabled is based on GO_EXTLINK_ENABLED when 85 // Go was built; see ../../make.bash. 86 if ld.Linkmode == ld.LinkAuto && obj.Getgoextlinkenabled() == "0" { 87 ld.Linkmode = ld.LinkInternal 88 } 89 90 // Darwin/arm64 only supports external linking 91 if ld.HEADTYPE == obj.Hdarwin { 92 ld.Linkmode = ld.LinkExternal 93 } 94 95 switch ld.HEADTYPE { 96 default: 97 if ld.Linkmode == ld.LinkAuto { 98 ld.Linkmode = ld.LinkInternal 99 } 100 if ld.Linkmode == ld.LinkExternal && obj.Getgoextlinkenabled() != "1" { 101 log.Fatalf("cannot use -linkmode=external with -H %s", ld.Headstr(int(ld.HEADTYPE))) 102 } 103 case obj.Hlinux, obj.Hdarwin: 104 break 105 } 106 107 switch ld.HEADTYPE { 108 default: 109 ld.Exitf("unknown -H option: %v", ld.HEADTYPE) 110 111 case obj.Hplan9: /* plan 9 */ 112 ld.HEADR = 32 113 114 if ld.INITTEXT == -1 { 115 ld.INITTEXT = 4128 116 } 117 if ld.INITDAT == -1 { 118 ld.INITDAT = 0 119 } 120 if ld.INITRND == -1 { 121 ld.INITRND = 4096 122 } 123 124 case obj.Hlinux: /* arm64 elf */ 125 ld.Elfinit() 126 ld.HEADR = ld.ELFRESERVE 127 if ld.INITTEXT == -1 { 128 ld.INITTEXT = 0x10000 + int64(ld.HEADR) 129 } 130 if ld.INITDAT == -1 { 131 ld.INITDAT = 0 132 } 133 if ld.INITRND == -1 { 134 ld.INITRND = 0x10000 135 } 136 137 case obj.Hdarwin: /* apple MACH */ 138 ld.Debug['w'] = 1 // disable DWARF generation 139 ld.Machoinit() 140 ld.HEADR = ld.INITIAL_MACHO_HEADR 141 if ld.INITTEXT == -1 { 142 ld.INITTEXT = 4096 + int64(ld.HEADR) 143 } 144 if ld.INITDAT == -1 { 145 ld.INITDAT = 0 146 } 147 if ld.INITRND == -1 { 148 ld.INITRND = 4096 149 } 150 151 case obj.Hnacl: 152 ld.Elfinit() 153 ld.HEADR = 0x10000 154 ld.Funcalign = 16 155 if ld.INITTEXT == -1 { 156 ld.INITTEXT = 0x20000 157 } 158 if ld.INITDAT == -1 { 159 ld.INITDAT = 0 160 } 161 if ld.INITRND == -1 { 162 ld.INITRND = 0x10000 163 } 164 } 165 166 if ld.INITDAT != 0 && ld.INITRND != 0 { 167 fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(ld.INITDAT), uint32(ld.INITRND)) 168 } 169 } 170
