--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/bytecode.h	Mon Aug 13 11:28:15 2007 +0200
@@ -0,0 +1,123 @@
+/* Definitions for bytecode interpretation and compiled-function objects.
+   Copyright (C) 1985, 1986, 1987, 1992, 1993 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs 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.
+
+XEmacs 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 XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not in FSF. */
+
+/* Authorship:
+
+   FSF: long ago.
+   Mly: rewrote for 19.8, properly abstracted.
+   Jon Reid: some changes for I18N3 (domain, etc), for 19.8.
+ */
+
+#ifndef _XEMACS_BYTECODE_H_
+#define _XEMACS_BYTECODE_H_
+
+/* Meanings of slots in a Lisp_Compiled_Function.
+   Don't use these!  For backward compatibility only.  */
+#define COMPILED_ARGLIST	0
+#define COMPILED_INSTRUCTIONS	1
+#define COMPILED_CONSTANTS	2
+#define COMPILED_STACK_DEPTH	3
+#define COMPILED_DOC_STRING	4
+#define COMPILED_INTERACTIVE	5
+#define COMPILED_DOMAIN		6
+
+/* It doesn't make sense to have this and also have load-history */
+/* #define COMPILED_FUNCTION_ANNOTATION_HACK */
+
+struct Lisp_Compiled_Function
+{
+  struct lrecord_header lheader;
+  unsigned short stack_depth;
+  unsigned short specpdl_depth;
+  struct
+  {
+    unsigned int documentationp: 1;
+    unsigned int interactivep: 1;
+    /* Only used if I18N3, but always defined for simplicity. */
+    unsigned int domainp: 1;
+    /* Non-zero if this bytecode came from a v18 or v19 file.
+       We need to Ebolify the `assoc', `delq', etc. functions. */
+    unsigned int ebolified: 1;
+  } flags;
+  Lisp_Object instructions;
+  Lisp_Object constants;
+  Lisp_Object arglist;
+  /* This uses the minimal number of conses; see accessors in data.c. */
+  Lisp_Object doc_and_interactive;
+#ifdef COMPILED_FUNCTION_ANNOTATION_HACK
+  /* Something indicating where the bytecode came from */
+  Lisp_Object annotated;
+#endif
+};
+typedef struct Lisp_Compiled_Function Lisp_Compiled_Function;
+
+Lisp_Object run_byte_code (Lisp_Object compiled_function_or_instructions, ...);
+
+Lisp_Object compiled_function_arglist       (Lisp_Compiled_Function *f);
+Lisp_Object compiled_function_instructions  (Lisp_Compiled_Function *f);
+Lisp_Object compiled_function_constants     (Lisp_Compiled_Function *f);
+int         compiled_function_stack_depth   (Lisp_Compiled_Function *f);
+Lisp_Object compiled_function_documentation (Lisp_Compiled_Function *f);
+Lisp_Object compiled_function_annotation    (Lisp_Compiled_Function *f);
+Lisp_Object compiled_function_domain        (Lisp_Compiled_Function *f);
+Lisp_Object compiled_function_interactive   (Lisp_Compiled_Function *f);
+
+void set_compiled_function_documentation (Lisp_Compiled_Function *f,
+					  Lisp_Object new_doc);
+
+Lisp_Object funcall_compiled_function (Lisp_Object fun,
+				       int nargs, Lisp_Object args[]);
+void optimize_compiled_function (Lisp_Object compiled_function);
+
+DECLARE_LRECORD (compiled_function, Lisp_Compiled_Function);
+#define XCOMPILED_FUNCTION(x) XRECORD (x, compiled_function, \
+				       Lisp_Compiled_Function)
+#define XSETCOMPILED_FUNCTION(x, p) XSETRECORD (x, p, compiled_function)
+#define COMPILED_FUNCTIONP(x) RECORDP (x, compiled_function)
+#define CHECK_COMPILED_FUNCTION(x) CHECK_RECORD (x, compiled_function)
+#define CONCHECK_COMPILED_FUNCTION(x) CONCHECK_RECORD (x, compiled_function)
+
+extern Lisp_Object Qbyte_code;
+
+/* total 1765 internal 101 doc-and-int 775 doc-only 389 int-only 42 neither 559
+ no doc slot, no int slot
+    overhead                        : (* 1765 0) =    0
+    doc-and-int (args . (doc . int)): (*  775 4) = 3100
+    doc-only    (args . doc)        : (*  389 2) =  778
+    int-only    (args . int)        : (*   42 2) =   84
+    neither     args                : (*  559 0) =    0 = 3962
+ combined
+    overhead                        : (* 1765 1) = 1765
+    doc-and-int (doc . int)         : (*  775 2) = 1550
+    doc-only    doc                 : (*  389 0) =    0
+    int-only    int                 : (*   42 0) =    0
+    neither     -                   : (*  559 0) =    0 = 3315
+ both
+    overhead                        : (* 1765 2) = 3530
+    doc-and-int -                   : (*  775 0) =    0
+    doc-only    -                   : (*  389 0) =    0
+    int-only    -                   : (*   42 0) =    0
+    neither     -                   : (*  559 0)  =   0 = 3530
+*/
+
+#endif /* _XEMACS_BYTECODE_H_ */
+