github.com/ader1990/go@v0.0.0-20140630135419-8c24447fa791/src/cmd/ld/pass.c (about) 1 // Inferno utils/6l/pass.c 2 // http://code.google.com/p/inferno-os/source/browse/utils/6l/pass.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 // Code and data passes. 32 33 #include "l.h" 34 #include "../ld/lib.h" 35 #include "../../pkg/runtime/stack.h" 36 37 void 38 follow(void) 39 { 40 LSym *s; 41 42 if(debug['v']) 43 Bprint(&bso, "%5.2f follow\n", cputime()); 44 Bflush(&bso); 45 46 for(s = ctxt->textp; s != nil; s = s->next) 47 ctxt->arch->follow(ctxt, s); 48 } 49 50 void 51 patch(void) 52 { 53 LSym *s; 54 55 if(debug['v']) 56 Bprint(&bso, "%5.2f mkfwd\n", cputime()); 57 Bflush(&bso); 58 for(s = ctxt->textp; s != nil; s = s->next) 59 mkfwd(s); 60 if(debug['v']) 61 Bprint(&bso, "%5.2f patch\n", cputime()); 62 Bflush(&bso); 63 64 if(flag_shared) { 65 s = linklookup(ctxt, "init_array", 0); 66 s->type = SINITARR; 67 s->reachable = 1; 68 s->hide = 1; 69 addaddr(ctxt, s, linklookup(ctxt, INITENTRY, 0)); 70 } 71 72 for(s = ctxt->textp; s != nil; s = s->next) 73 linkpatch(ctxt, s); 74 } 75 76 void 77 dostkoff(void) 78 { 79 LSym *s; 80 81 for(s = ctxt->textp; s != nil; s = s->next) 82 ctxt->arch->addstacksplit(ctxt, s); 83 } 84 85 void 86 span(void) 87 { 88 LSym *s; 89 90 if(debug['v']) 91 Bprint(&bso, "%5.2f span\n", cputime()); 92 93 for(s = ctxt->textp; s != nil; s = s->next) 94 ctxt->arch->assemble(ctxt, s); 95 } 96 97 void 98 pcln(void) 99 { 100 LSym *s; 101 102 for(s = ctxt->textp; s != nil; s = s->next) 103 linkpcln(ctxt, s); 104 }