github.com/reiver/go@v0.0.0-20150109200633-1d0c7792f172/src/cmd/9l/obj.c (about) 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@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 31 // Reading object files. 32 33 #include "l.h" 34 #include "../ld/lib.h" 35 #include "../ld/elf.h" 36 #include "../ld/dwarf.h" 37 #include <ar.h> 38 39 char *thestring = "ppc64"; 40 LinkArch *thelinkarch; 41 42 void 43 linkarchinit(void) 44 { 45 thestring = getgoarch(); 46 if(strcmp(thestring, "ppc64le") == 0) 47 thelinkarch = &linkppc64le; 48 else 49 thelinkarch = &linkppc64; 50 } 51 52 void 53 archinit(void) 54 { 55 // getgoextlinkenabled is based on GO_EXTLINK_ENABLED when 56 // Go was built; see ../../make.bash. 57 if(linkmode == LinkAuto && strcmp(getgoextlinkenabled(), "0") == 0) 58 linkmode = LinkInternal; 59 60 switch(HEADTYPE) { 61 default: 62 if(linkmode == LinkAuto) 63 linkmode = LinkInternal; 64 if(linkmode == LinkExternal && strcmp(getgoextlinkenabled(), "1") != 0) 65 sysfatal("cannot use -linkmode=external with -H %s", headstr(HEADTYPE)); 66 break; 67 } 68 69 switch(HEADTYPE) { 70 default: 71 diag("unknown -H option"); 72 errorexit(); 73 case Hplan9: /* plan 9 */ 74 HEADR = 32L; 75 if(INITTEXT == -1) 76 INITTEXT = 4128; 77 if(INITDAT == -1) 78 INITDAT = 0; 79 if(INITRND == -1) 80 INITRND = 4096; 81 break; 82 case Hlinux: /* ppc64 elf */ 83 if(strcmp(thestring, "ppc64") == 0) 84 debug['d'] = 1; // TODO(austin): ELF ABI v1 not supported yet 85 elfinit(); 86 HEADR = ELFRESERVE; 87 if(INITTEXT == -1) 88 INITTEXT = 0x10000 + HEADR; 89 if(INITDAT == -1) 90 INITDAT = 0; 91 if(INITRND == -1) 92 INITRND = 0x10000; 93 break; 94 case Hnacl: 95 elfinit(); 96 HEADR = 0x10000; 97 funcalign = 16; 98 if(INITTEXT == -1) 99 INITTEXT = 0x20000; 100 if(INITDAT == -1) 101 INITDAT = 0; 102 if(INITRND == -1) 103 INITRND = 0x10000; 104 break; 105 } 106 if(INITDAT != 0 && INITRND != 0) 107 print("warning: -D0x%ux is ignored because of -R0x%ux\n", 108 INITDAT, INITRND); 109 }