tools/jprof/coff.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is jprof.
  15  *
  16  * The Initial Developer of the Original Code is Kipp E.B. Hickman.
  17  * Portions created by the Initial Developer are Copyright (C) 1998
  18  * the Initial Developer. All Rights Reserved.
  19  *
  20  * Contributor(s):
  21  *
  22  * Alternatively, the contents of this file may be used under the terms of
  23  * either the GNU General Public License Version 2 or later (the "GPL"), or
  24  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  25  * in which case the provisions of the GPL or the LGPL are applicable instead
  26  * of those above. If you wish to allow use of your version of this file only
  27  * under the terms of either the GPL or the LGPL, and not to allow others to
  28  * use your version of this file under the terms of the MPL, indicate your
  29  * decision by deleting the provisions above and replace them with the notice
  30  * and other provisions required by the GPL or the LGPL. If you do not delete
  31  * the provisions above, a recipient may use your version of this file under
  32  * the terms of any one of the MPL, the GPL or the LGPL.
  33  *
  34  * ***** END LICENSE BLOCK ***** */
  35
  36 #include "leaky.h"
  37
  38 #ifdef USE_COFF
  39
  40 #define LANGUAGE_C
  41 #include <sym.h>
  42 #include <cmplrs/stsupport.h>
  43 #include <symconst.h>
  44 #include <filehdr.h>
  45 #include <ldfcn.h>
  46 #include <string.h>
  47 #include <stdlib.h>
  48
  49 #ifdef IRIX4
  50 extern "C" {
  51     extern char *demangle(char const* in);
  52 };
  53 #else
  54 #include <dem.h>
  55 #endif
  56
  57 static char *Demangle(char *rawName)
  58 {
  59 #ifdef IRIX4
  60     return strdup(demangle(rawName));
  61 #else
  62     char namebuf[4000];
  63     demangle(rawName, namebuf);
  64     return strdup(namebuf);
  65 #endif
  66 }
  67
  68 void leaky::readSymbols(const char *fileName)
  69 {
  70     LDFILE *ldptr;
  71
  72     ldptr = ldopen(fileName, NULL);
  73     if (!ldptr) {
  74         fprintf(stderr, "%s: unable to open \"%s\"\n", applicationName,
  75                 fileName);
  76         exit(-1);
  77     }
  78     if (PSYMTAB(ldptr) == 0) {
  79         fprintf(stderr, "%s: \"%s\": has no symbol table\n", applicationName,
  80                 fileName);
  81         exit(-1);
  82     }
  83
  84     long isymMax = SYMHEADER(ldptr).isymMax;
  85     long iextMax = SYMHEADER(ldptr).iextMax;
  86     long iMax = isymMax + iextMax;
  87
  88     long alloced = 10000;
  89     Symbol* syms = (Symbol*) malloc(sizeof(Symbol) * 10000);
  90     Symbol* sp = syms;
  91     Symbol* last = syms + alloced;
  92     SYMR symr;
  93
  94     for (long isym = 0; isym < iMax; isym++) {
  95         if (ldtbread(ldptr, isym, &symr) != SUCCESS) {
  96             fprintf(stderr, "%s: can't read symbol #%d\n", applicationName,
  97                     isym);
  98             exit(-1);
  99         }
 100         if (isym < isymMax) {
 101             if ((symr.st == stStaticProc)
 102                 || ((symr.st == stProc) &&
 103                     ((symr.sc == scText) || (symr.sc == scAbs)))
 104                 || ((symr.st == stBlock) &&
 105                     (symr.sc == scText))) {
 106                 // Text symbol. Set name field to point to the symbol name
 107                 sp->name = Demangle(ldgetname(ldptr, &symr));
 108                 sp->address = symr.value;
 109                 sp++;
 110                 if (sp >= last) {
 111                     long n = alloced + 10000;
 112                     syms = (Symbol*)
 113                         realloc(syms, (size_t) (sizeof(Symbol) * n));
 114                     last = syms + n;
 115                     sp = syms + alloced;
 116                     alloced = n;
 117                 }
 118             }
 119         }
 120     }
 121
 122     int interesting = sp - syms;
 123     if (!quiet) {
 124         printf("Total of %d symbols\n", interesting);
 125     }
 126     usefulSymbols = interesting;
 127     externalSymbols = syms;
 128 }
 129
 130 #endif /* USE_COFF */