*** empty log message ***

2025-06-29 14:30:34 +02:00 · 2001-04-22 02:13:48 +00:00 · 2001-04-22 02:13:48 +00:00 · ac99cb0cb1
commit ac99cb0cb1
parent ac02b386c2
47 changed files with 1319 additions and 854 deletions
--- a/src/frames.c
+++ b/src/frames.c
@ -0,0 +1,184 @@
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307 USA
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE.  If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way.  To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.  */
+
+#include <string.h>
+#include "frames.h"
+
+
+scm_bits_t scm_tc16_heap_frame;
+
+SCM
+scm_c_make_heap_frame (SCM *fp)
+{
+  struct scm_heap_frame *p =
+    scm_must_malloc (sizeof (struct scm_heap_frame), "make_heap_frame");
+  p->fp            = fp;
+  p->program       = SCM_UNDEFINED;
+  p->variables     = SCM_UNDEFINED;
+  p->dynamic_link  = SCM_UNDEFINED;
+  p->external_link = SCM_UNDEFINED;
+  SCM_RETURN_NEWSMOB (scm_tc16_heap_frame, p);
+}
+
+static SCM
+heap_frame_mark (SCM obj)
+{
+  struct scm_heap_frame *p = SCM_HEAP_FRAME_DATA (obj);
+  scm_gc_mark (p->program);
+  scm_gc_mark (p->variables);
+  scm_gc_mark (p->dynamic_link);
+  return p->external_link;
+}
+
+/* Scheme interface */
+
+SCM_DEFINE (scm_frame_p, "frame?", 1, 0, 0,
+	    (SCM obj),
+	    "")
+#define FUNC_NAME s_scm_frame_p
+{
+  return SCM_BOOL (SCM_HEAP_FRAME_P (obj));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_frame_program, "frame-program", 1, 0, 0,
+	    (SCM frame),
+	    "")
+#define FUNC_NAME s_scm_frame_program
+{
+  SCM_VALIDATE_HEAP_FRAME (1, frame);
+  return SCM_STACK_FRAME_PROGRAM (SCM_HEAP_FRAME_DATA (frame)->fp);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_frame_local_variables, "frame-local-variables", 1, 0, 0,
+	    (SCM frame),
+	    "")
+#define FUNC_NAME s_scm_frame_local_variables
+{
+  struct scm_heap_frame *p;
+
+  SCM_VALIDATE_HEAP_FRAME (1, frame);
+  p = SCM_HEAP_FRAME_DATA (frame);
+
+  if (SCM_UNBNDP (p->variables))
+    {
+      SCM prog = scm_frame_program (frame);
+      struct scm_program *pp = SCM_PROGRAM_DATA (prog);
+      int i, size = pp->nargs + pp->nlocs;
+      p->variables = scm_make_vector (SCM_MAKINUM (size), SCM_BOOL_F);
+      for (i = 0; i < size; i++)
+	SCM_VELTS (p->variables)[i] = SCM_STACK_FRAME_VARIABLE (p->fp, i);
+    }
+  return p->variables;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_frame_return_address, "frame-return-address", 1, 0, 0,
+	    (SCM frame),
+	    "")
+#define FUNC_NAME s_scm_frame_return_address
+{
+  SCM_VALIDATE_HEAP_FRAME (1, frame);
+
+  return scm_long2num ((long) SCM_VM_BYTE_ADDRESS
+		       (SCM_STACK_FRAME_RETURN_ADDRESS
+			(SCM_HEAP_FRAME_DATA (frame)->fp)));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_frame_dynamic_link, "frame-dynamic-link", 1, 0, 0,
+	    (SCM frame),
+	    "")
+#define FUNC_NAME s_scm_frame_dynamic_link
+{
+  struct scm_heap_frame *p;
+
+  SCM_VALIDATE_HEAP_FRAME (1, frame);
+  p = SCM_HEAP_FRAME_DATA (frame);
+
+  if (SCM_UNBNDP (p->dynamic_link))
+    {
+      SCM *fp = SCM_VM_STACK_ADDRESS (SCM_STACK_FRAME_DYNAMIC_LINK (p->fp));
+      if (fp)
+	p->dynamic_link = scm_c_make_heap_frame (fp);
+      else
+	p->dynamic_link = SCM_BOOL_F;
+    }
+
+  return p->dynamic_link;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_frame_external_link, "frame-external-link", 1, 0, 0,
+	    (SCM frame),
+	    "")
+#define FUNC_NAME s_scm_frame_external_link
+{
+  struct scm_heap_frame *p;
+
+  SCM_VALIDATE_HEAP_FRAME (1, frame);
+  p = SCM_HEAP_FRAME_DATA (frame);
+
+  if (SCM_UNBNDP (p->external_link))
+    p->external_link = SCM_STACK_FRAME_EXTERNAL_LINK (p->fp);
+
+  return p->external_link;
+}
+#undef FUNC_NAME
+
+
+void
+scm_init_frames (void)
+{
+  scm_tc16_heap_frame = scm_make_smob_type ("heap_frame", 0);
+  scm_set_smob_mark (scm_tc16_heap_frame, heap_frame_mark);
+
+#ifndef SCM_MAGIC_SNARFER
+#include "frames.x"
+#endif
+}
+
+/*
+  Local Variables:
+  c-file-style: "gnu"
+  End:
+*/