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/* stab.c: Read and manage symbol tables from object modules.
*
* $Id$
*
* Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
* Copyright 2002, 2003 Sam Hocevar <sam@hocevar.net>, Paris
*
* This software was derived from Elk 1.2, which was Copyright 1987, 1988,
* 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
* by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
* between TELES and Nixdorf Microprocessor Engineering, Berlin).
*
* Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
* owners or individual owners of copyright in this software, grant to any
* person or company a worldwide, royalty free, license to
*
* i) copy this software,
* ii) prepare derivative works based on this software,
* iii) distribute copies of this software or derivative works,
* iv) perform this software, or
* v) display this software,
*
* provided that this notice is not removed and that neither Oliver Laumann
* nor Teles nor Nixdorf are deemed to have made any representations as to
* the suitability of this software for any purpose nor are held responsible
* for any defects of this software.
*
* THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include "kernel.h"
void Free_Symbols (SYMTAB *);
#if defined(CAN_LOAD_LIB) || defined (INIT_OBJECTS)
/*#if defined(MACH_O)
# include "stab-macho.c"
#elif defined(HAVE_LIBELF)
# include "stab-elf.c"
#elif defined(COFF) || defined(XCOFF)
# include "stab-coff.c"
#elif defined(ECOFF)
# include "stab-ecoff.c"
#elif defined(CONVEX_AOUT)
# include "stab-convex.c"
#elif defined(hp9000s300) || defined(__hp9000s300) || defined(__hp9000s300__)
# include "stab-hp9k300.c"
#elif defined(hp9000s800) || defined(__hp9000s800) || defined(__hp9000s800__)
# include "stab-hp9k800.c"
#elif defined(HAVE_A_OUT_H)
# include "stab-bsd.c"
#else
# include "stab-unix.c"
#endif*/
static SYMPREFIX Ignore_Prefixes[] = {
/* Currently none */
{ 0, 0 }
};
static SYMPREFIX Init_Prefixes[] = {
{ INIT_PREFIX, PR_EXTENSION },
{ "_GLOBAL_.I.", PR_CONSTRUCTOR }, /* SVR4.2/g++ */
{ "__sti__", PR_CONSTRUCTOR },
{ "_STI", PR_CONSTRUCTOR },
{ "_GLOBAL_$I$", PR_CONSTRUCTOR },
{ 0, 0 }
};
static SYMPREFIX Finit_Prefixes[] = {
{ FINIT_PREFIX, PR_EXTENSION },
{ "_GLOBAL_.D.", PR_CONSTRUCTOR },
{ "__std__", PR_CONSTRUCTOR },
{ "_STD", PR_CONSTRUCTOR },
{ "_GLOBAL_$D$", PR_CONSTRUCTOR },
{ 0, 0 }
};
static FUNCT *Finalizers;
static void Call (unsigned long int l) {
#ifdef XCOFF
unsigned long int vec[3];
extern main();
memcpy (vec, main, sizeof vec);
vec[0] = (l & ~0xF0000000) + (vec[0] & 0xF0000000);
((void (*)())vec)();
#else
((void (*)())l)();
#endif
}
void Call_Initializers (SYMTAB *tab, char *addr, int which) {
SYM *sp;
char *p;
SYMPREFIX *pp;
FUNCT *fp, **fpp;
/* Set pointer to end of list of finalizers; extension finalization
* functions and C++ static destructors will be appended to this list:
*/
for (fpp = &Finalizers; *fpp; fpp = &(*fpp)->next)
;
for (sp = tab->first; sp; sp = sp->next) {
if (!sp->value || (char *)sp->value < addr)
continue;
p = sp->name;
#ifdef SYMS_BEGIN_WITH
if (*p == SYMS_BEGIN_WITH)
p++;
else
continue;
#endif
for (pp = Ignore_Prefixes; pp->name; pp++)
if (strncmp (p, pp->name, strlen (pp->name)) == 0)
goto next;
for (pp = Init_Prefixes; pp->name; pp++) {
if (pp->type == which
&& strncmp (p, pp->name, strlen (pp->name)) == 0) {
if (Verb_Init)
printf ("[calling %s]\n", p);
Call (sp->value);
}
}
/* Append to list of finalizers (to be invoked on exit):
*/
for (pp = Finit_Prefixes; pp->name; pp++) {
if (pp->type == which
&& strncmp (p, pp->name, strlen (pp->name)) == 0) {
fp = (FUNCT *)Safe_Malloc (sizeof (FUNCT));
fp->func = (void (*)())sp->value;
fp->name = Safe_Malloc (strlen (p) + 1);
strcpy (fp->name, p);
fp->next = 0;
*fpp = fp;
fpp = &fp->next;
}
}
next: ;
}
}
/* Call the finialization functions and C++ static destructors. Make sure
* that calling exit() from a function doesn't cause endless recursion.
*/
void Call_Finalizers () {
while (Finalizers) {
FUNCT *fp = Finalizers;
Finalizers = fp->next;
if (Verb_Init)
printf ("[calling %s]\n", fp->name);
Call ((unsigned long int)fp->func);
}
}
void Free_Symbols (SYMTAB *tab) {
register SYM *sp, *nextp;
for (sp = tab->first; sp; sp = nextp) {
nextp = sp->next;
#if defined(COFF) || defined(ECOFF)
free (sp->name);
#endif
free ((char *)sp);
}
if (tab->strings)
free (tab->strings);
free ((char *)tab);
}
#endif /* CAN_LOAD_LIB || INIT_OBJECTS */
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