src/runtime/globals.c

   1 /*
   2  * variables everybody needs to look at or frob on
   3  */
   4
   5 /*
   6  * This software is part of the SBCL system. See the README file for
   7  * more information.
   8  *
   9  * This software is derived from the CMU CL system, which was
  10  * written at Carnegie Mellon University and released into the
  11  * public domain. The software is in the public domain and is
  12  * provided with absolutely no warranty. See the COPYING and CREDITS
  13  * files for more information.
  14  */
  15
  16 #include <stdio.h>
  17
  18 #include "runtime.h"
  19 #include "sbcl.h"
  20 #include "globals.h"
  21
  22 int foreign_function_call_active;
  23
  24 lispobj *current_control_stack_pointer;
  25 lispobj *current_control_frame_pointer;
  26 #ifndef BINDING_STACK_POINTER
  27 lispobj *current_binding_stack_pointer;
  28 #endif
  29
  30 #ifndef ALLOCATION_POINTER
  31 lispobj *dynamic_space_free_pointer;
  32 #endif
  33 #ifndef INTERNAL_GC_TRIGGER
  34 lispobj *current_auto_gc_trigger;
  35 #endif
  36
  37 void globals_init(void)
  38 {
  39     /* Space, stack, and free pointer vars are initialized by
  40      * validate() and coreparse(). */
  41
  42 #ifndef INTERNAL_GC_TRIGGER
  43     /* no GC trigger yet */
  44     current_auto_gc_trigger = NULL;
  45 #endif
  46
  47     /* Set foreign function call active. */
  48     foreign_function_call_active = 1;
  49
  50     /* Initialize the current Lisp state. */
  51 #ifndef __i386__
  52     current_control_stack_pointer = (lispobj *)CONTROL_STACK_START;
  53 #else
  54     current_control_stack_pointer = (lispobj *)CONTROL_STACK_END;
  55 #endif
  56
  57     current_control_frame_pointer = (lispobj *)0;
  58 #ifndef BINDING_STACK_POINTER
  59     current_binding_stack_pointer = BINDING_STACK_START;
  60 #endif
  61 }