mirror of
https://github.com/mozilla/gecko-dev.git
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100 lines
2.2 KiB
C++
100 lines
2.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "leaky.h"
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#ifdef USE_COFF
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#define LANGUAGE_C
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#include <sym.h>
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#include <cmplrs/stsupport.h>
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#include <symconst.h>
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#include <filehdr.h>
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#include <ldfcn.h>
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#include <string.h>
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#include <stdlib.h>
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#ifdef IRIX4
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extern "C" {
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extern char *demangle(char const* in);
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};
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#else
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#include <dem.h>
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#endif
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static char *Demangle(char *rawName)
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{
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#ifdef IRIX4
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return strdup(demangle(rawName));
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#else
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char namebuf[4000];
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demangle(rawName, namebuf);
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return strdup(namebuf);
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#endif
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}
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void leaky::readSymbols(const char *fileName)
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{
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LDFILE *ldptr;
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ldptr = ldopen(fileName, nullptr);
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if (!ldptr) {
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fprintf(stderr, "%s: unable to open \"%s\"\n", applicationName,
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fileName);
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exit(-1);
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}
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if (PSYMTAB(ldptr) == 0) {
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fprintf(stderr, "%s: \"%s\": has no symbol table\n", applicationName,
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fileName);
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exit(-1);
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}
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long isymMax = SYMHEADER(ldptr).isymMax;
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long iextMax = SYMHEADER(ldptr).iextMax;
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long iMax = isymMax + iextMax;
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long alloced = 10000;
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Symbol* syms = (Symbol*) malloc(sizeof(Symbol) * 10000);
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Symbol* sp = syms;
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Symbol* last = syms + alloced;
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SYMR symr;
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for (long isym = 0; isym < iMax; isym++) {
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if (ldtbread(ldptr, isym, &symr) != SUCCESS) {
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fprintf(stderr, "%s: can't read symbol #%d\n", applicationName,
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isym);
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exit(-1);
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}
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if (isym < isymMax) {
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if ((symr.st == stStaticProc)
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|| ((symr.st == stProc) &&
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((symr.sc == scText) || (symr.sc == scAbs)))
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|| ((symr.st == stBlock) &&
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(symr.sc == scText))) {
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// Text symbol. Set name field to point to the symbol name
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sp->name = Demangle(ldgetname(ldptr, &symr));
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sp->address = symr.value;
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sp++;
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if (sp >= last) {
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long n = alloced + 10000;
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syms = (Symbol*)
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realloc(syms, (size_t) (sizeof(Symbol) * n));
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last = syms + n;
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sp = syms + alloced;
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alloced = n;
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}
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}
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}
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}
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int interesting = sp - syms;
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if (!quiet) {
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printf("Total of %d symbols\n", interesting);
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}
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usefulSymbols = interesting;
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externalSymbols = syms;
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}
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#endif /* USE_COFF */
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