home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Language/OS - Multiplatform Resource Library
/
LANGUAGE OS.iso
/
lisp
/
elk-2_0.lha
/
elk-2.0
/
src
/
stab.c
< prev
next >
Wrap
C/C++ Source or Header
|
1992-11-02
|
3KB
|
118 lines
/* Read and manage symbol tables from object modules
*/
#include "scheme.h"
#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;
}
}
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 */