libexec/ld.aout_so/md-prologue.c

   1 /*      $NetBSD: md-prologue.c,v 1.2 1996/07/03 03:31:56 thorpej Exp $  */
   2
   3 /*
   4  * rtld entry pseudo code - turn into assembler and tweak it
   5  */
   6
   7 #include <sys/types.h>
   8 #include <a.out.h>
   9 #include "link.h"
  10 #include "md.h"
  11
  12 extern long     _GOT_[];
  13 extern void     (*rtld)();
  14 extern void     (*binder())();
  15
  16 void
  17 rtld_entry(version, crtp)
  18 int version;
  19 struct crt *crtp;
  20 {
  21         register struct link_dynamic    *dp;
  22         register void                   (*f)();
  23
  24         /* __DYNAMIC is first entry in GOT */
  25         dp = (struct link_dynamic *) (_GOT_[0]+crtp->crt_ba);
  26
  27         f = (void (*)())((long)rtld + crtp->crt_ba);
  28         (*f)(version, crtp, dp);
  29 }
  30
  31 void
  32 binder_entry()
  33 {
  34         extern int PC;
  35         struct jmpslot  *sp;
  36         void    (*func)();
  37
  38         func = binder(PC, sp->reloc_index & 0x003fffff);
  39         (*func)();
  40 }