0.7.6:

[sbcl.git] / src / runtime / globals.c

diff --git a/src/runtime/globals.c b/src/runtime/globals.c
index 70beb56..2dee4ce 100644 (file)
--- a/src/runtime/globals.c
+++ b/src/runtime/globals.c
@@ -18,6 +18,7 @@
 #include "runtime.h"
 #include "sbcl.h"
 #include "globals.h"
+#include "validate.h"
 
 int foreign_function_call_active;
 
@@ -27,19 +28,30 @@ lispobj *current_control_frame_pointer;
 lispobj *current_binding_stack_pointer;
 #endif
 
+/* ALLOCATION_POINTER is more or less synonymous with RT, it seems.
+ * Anyone want to do an RT port of sbcl?  
+ */
+
 #ifndef ALLOCATION_POINTER
+/* The Object Formerly Known As current_dynamic_space_free_pointer */
 lispobj *dynamic_space_free_pointer;
 #endif
-#ifndef INTERNAL_GC_TRIGGER
+
+#ifndef GENCGC /* since GENCGC has its own way to record trigger */
 lispobj *current_auto_gc_trigger;
 #endif
 
+/* For copying GCs, this points to the start of the dynamic space
+ * currently in use (that will become the from_space when the next GC
+ * is done).  For the GENCGC, it always points to DYNAMIC_SPACE_START. */
+lispobj *current_dynamic_space;
+
 void globals_init(void)
 {
     /* Space, stack, and free pointer vars are initialized by
      * validate() and coreparse(). */
 
-#ifndef INTERNAL_GC_TRIGGER
+#ifndef GENCGC /* since GENCGC has its own way to record trigger */
     /* no GC trigger yet */
     current_auto_gc_trigger = NULL;
 #endif
@@ -48,7 +60,7 @@ void globals_init(void)
     foreign_function_call_active = 1;
 
     /* Initialize the current Lisp state. */
-#ifndef __i386__
+#ifndef __i386__ /* if stack grows upward */
     current_control_stack_pointer = (lispobj *)CONTROL_STACK_START;
 #else
     current_control_stack_pointer = (lispobj *)CONTROL_STACK_END;