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- /* Read and manage symbol tables from object modules
- */
-
- #include "scheme.h"
- #if ZELK
- # include <zelk.h>
- #endif
-
- #if defined(CAN_LOAD_OBJ) || defined (INIT_OBJECTS)
-
- #ifdef MACH_O
- # include "stab.macho.c"
- #else
- #ifdef ELF
- # include "stab.elf.c"
- #else
- #if defined(COFF) || defined(XCOFF)
- # include "stab.coff.c"
- #else
- #ifdef ECOFF
- # include "stab.ecoff.c"
- #else
- #if defined(hp9000s300) || defined(__hp9000s300__)
- # include "stab.hp9k300.c"
- #else
- #if defined(hp9000s800) || defined(__hp9000s800__)
- # include "stab.hp9k800.c"
- #else
- # include "stab.bsd.c"
- #endif
- #endif
- #endif
- #endif
- #endif
- #endif
-
- Free_Symbols (tab) SYMTAB *tab; {
- register SYM *sp;
-
- for (sp = tab->first; sp; sp = sp->next) {
- #if defined(COFF) || defined(ECOFF)
- free (sp->name);
- #endif
- free ((char *)sp);
- }
- if (tab->strings)
- free (tab->strings);
- free ((char *)tab);
- }
-
- static char *Ignore_Prefixes[] = { "init__", "finit__", 0 };
- static char *Init_Prefixes[] = { "init_", "__sti__", "_STI",
- "_GLOBAL_$I$", 0 };
- static char *Finit_Prefixes[] = { "finit_", "__std__", "_STD",
- "_GLOBAL_$D$", 0 };
-
- static FUNCT *Finalizers;
-
- static void Call (l) unsigned long l; {
- #ifdef XCOFF
- unsigned long vec[3];
- extern main();
-
- bcopy ((char *)main, (char *)vec, sizeof vec);
- vec[0] = l + (vec[0] & 0xF0000000);
- ((void (*)())vec)();
- #else
- ((void (*)())l)();
- #endif
- }
-
- Call_Initializers (tab, addr) SYMTAB *tab; char *addr; {
- register SYM *sp;
- register char *p, **pp;
- int got_one = 0;
- FUNCT *fp;
-
- for (sp = tab->first; sp; sp = sp->next) {
- if ((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; pp++)
- if (strncmp (p, *pp, strlen(*pp)) == 0)
- goto next;
- for (pp = Init_Prefixes; *pp; pp++) {
- if (strncmp (p, *pp, strlen (*pp)) == 0) {
- got_one = 1;
- Call (sp->value);
- }
- }
- for (pp = Finit_Prefixes; *pp; pp++) {
- if (strncmp (p, *pp, strlen (*pp)) == 0) {
- fp = (FUNCT *)Safe_Malloc (sizeof (*fp));
- fp->func = (void (*)())sp->value;
- fp->next = Finalizers;
- Finalizers = fp;
- }
- }
-
- #ifdef ZELK
- # define FORLIB "PKGrtn_"
- # define FORLEN 7
- /* load foreign libraries */
- if (strncmp(p,FORLIB,FORLEN)==0) {
- PKG_type *pkgtab;
- /*printf("got forlib symbol :%s:\n",p);*/
- pkgtab = (PKG_type *) ( (char * (*)()) sp->value )();
- Zforpkginit(p+FORLEN,pkgtab);
- got_one = 1;
- }
- #endif /*ZELK*/
-
- next: ;
- }
- return got_one;
- }
-
- /* Call the finialization functions in reverse order. Make sure that
- * calling exit() from a finalizer doesn't cause endless recursion.
- */
- Call_Finalizers () {
- while (Finalizers) {
- FUNCT *fp = Finalizers;
- Finalizers = fp->next;
- Call ((unsigned long)fp->func);
- }
- }
- #endif /* CAN_LOAD_OBJ || INIT_OBJECTS */
-