/* bytecodes.h -- Constant definitions of lispmach byte-codes
   Copyright (C) 1993, 1994 John Harper <john@dcs.warwick.ac.uk>
   $Id$

   This file is part of Jade.

   Jade 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.

   Jade 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 Jade; see the file COPYING.  If not, write to
   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

#ifndef BYTECODES_H
#define BYTECODES_H

/* Don't forget to update the version number
 * in lisp/rep/vm/bytecode-defs.jl, too. */
#define BYTECODE_MAJOR_VERSION 11
#define BYTECODE_MINOR_VERSION 1

/* Number of bits encoded in each extra opcode forming the argument. */
#define ARG_SHIFT    8

/* The bits in the opcode used to encode the argument. */
#define OP_ARG_MASK  0x07

/* The inverse of the above. */
#define OP_OP_MASK   0xf8

/* Special arg specifying that the next opcode is actually an 8-bit
   argument. */
#define OP_ARG_1BYTE 6

/* Special arg meaning following two opcodes are a 16-bit argument. The
   first opcode is the high bits, the second the low bits. */
#define OP_ARG_2BYTE 7


/* Opcodes which have an argument encoded in them */

#define OP_SLOT_REF 0x00

#define OP_SLOT_REF_0 0x00
#define OP_SLOT_REF_1 0x01
#define OP_SLOT_REF_2 0x02
#define OP_SLOT_REF_3 0x03
#define OP_SLOT_REF_4 0x04
#define OP_SLOT_REF_5 0x05
#define OP_SLOT_REF_6 0x06
#define OP_SLOT_REF_7 0x07

/* Call function on top of stack with following ARG parameters. Leave
   result on stack. */
#define OP_CALL 0x08

/* Push const[ARG] onto the stack. */
#define OP_PUSH 0x10

/* Push the value of the symbol const[ARG] onto the stack. */
#define OP_REFG 0x18

/* Set the value of symbol const[ARG] to the value on the
   stack. Pops the value off the stack. */
#define OP_SETG 0x20

/* Sets the ARG'th value in the lexical environment. Pops value */
#define OP_SETN 0x28

#define OP_SLOT_SET 0x30

#define OP_SLOT_SET_0 0x30
#define OP_SLOT_SET_1 0x31
#define OP_SLOT_SET_2 0x32
#define OP_SLOT_SET_3 0x33
#define OP_SLOT_SET_4 0x34
#define OP_SLOT_SET_5 0x35
#define OP_SLOT_SET_6 0x36
#define OP_SLOT_SET_7 0x37

/* Pushes the ARG'th value in the lexical environment */
#define OP_REFN 0x38

#define OP_REFN_0 0x38
#define OP_REFN_1 0x39
#define OP_REFN_2 0x3a
#define OP_REFN_3 0x3b
#define OP_REFN_4 0x3c
#define OP_REFN_5 0x3d
#define OP_REFN_6 0x3e
#define OP_REFN_7 0x3f

#define OP_LAST_WITH_ARGS 0x3f


/* Opcodes without arguments. */

#define OP_REF 0x40			/* push (symbol-value pop) */
#define OP__SET 0x41			/* (set stk[1] stk[0]); pop; pop */
#define OP_FLUID_REF 0x42		/* call-1 fluid-ref */
#define OP_ENCLOSE 0x43			/* push (make-closure pop[1] nil) */
#define OP_INIT_BIND 0x44		/* new-binding-set */
#define OP_UNBIND 0x45			/* rewind-binding-set */
#define OP_DUP	0x46			/* push stk[0] */
#define OP_SWAP 0x47			/* stk[0] = stk[1], stk[1] = stk[0] */
#define OP_POP	0x48			/* pop[1] */

#define OP_NIL 0x49			/* push nil */
#define OP_T 0x4a			/* push t */
#define OP_CONS 0x4b			/* push (cons pop[1] pop[2]) */
#define OP_CAR 0x4c			/* push (car pop[1]) */
#define OP_CDR 0x4d			/* push (cdr pop[2])  */
#define OP_RPLACA 0x4e			/* call-2 rplaca */
#define OP_RPLACD 0x4f			/* call-2 rplacd */
#define OP_NTH 0x50			/* call-2 nth */
#define OP_NTHCDR 0x51			/* call-2 nthcdr */
#define OP_ASET 0x52			/* call-3 aset */
#define OP_AREF 0x53			/* call-2 aref */
#define OP_LENGTH 0x54			/* call-1 length */
#define OP_BIND 0x55
#define OP_ADD 0x56			/* push (+ pop[1] pop[2]) */
#define OP_NEG 0x57			/* push (- pop[1]) */
#define OP_SUB 0x58			/* push (- pop[1] pop[2]) */
#define OP_MUL 0x59			/* push (* pop[1] pop[2]) */
#define OP_DIV 0x5a			/* push (/ pop[1] pop[2]) */
#define OP_REM 0x5b			/* push (% pop[1] pop[2]) */
#define OP_LNOT 0x5c			/* push (lognot pop[1]) */
#define OP_NOT 0x5d			/* push (not pop[1]) */
#define OP_LOR 0x5e			/* push (logior pop[1] pop[2]) */
#define OP_LAND 0x5f			/* push (logand pop[1] pop[2]) */
#define OP_EQUAL 0x60			/* push (equal pop[1] pop[2]) */
#define OP_EQ 0x61			/* push (eq pop[1] pop[2]) */
#define OP_STRUCT_REF 0x62		/* push (structure-ref pop[1] pop[2])*/
#define OP_SCM_TEST 0x63
#define OP_GT 0x64			/* push (> pop[1] pop[2]) */
#define OP_GE 0x65			/* push (>= pop[1] pop[2]) */
#define OP_LT 0x66			/* push (< pop[1] pop[2]) */
#define OP_LE 0x67			/* push (<= pop[1] pop[2]) */
#define OP_INC 0x68			/* push (1+ pop[1]) */
#define OP_DEC 0x69			/* push (1- pop[1]) */
#define OP_ASH 0x6a			/* push (ash pop[1] pop[2]) */
#define OP_ZEROP 0x6b			/* push (zerop pop[1]) */
#define OP_NULL 0x6c			/* push (null pop[1]) */
#define OP_ATOM 0x6d			/* push (atom pop[1]) */
#define OP_CONSP 0x6e			/* push (consp pop[1]) */
#define OP_LISTP 0x6f			/* push (listp pop[1]) */
#define OP_NUMBERP 0x70			/* push (numberp pop[1]) */
#define OP_STRINGP 0x71			/* push (stringp pop[1]) */
#define OP_VECTORP 0x72			/* push (vectorp pop[1]) */
#define OP_CATCH 0x73			/* if stk[0] == (car stk[1])
					    then stk[0] := nil,
					         stk[1] = (cdr stk[1]) */
#define OP_THROW 0x74			/* throw_val = (cons pop[1] pop[2]),
					   goto error-handler */
#define OP_BINDERR 0x75			/* bind (cons pop[1] SP) */
#define OP_RETURN 0x76
#define OP_UNBINDALL 0x77
#define OP_BOUNDP 0x78			/* call-1 boundp */
#define OP_SYMBOLP 0x79			/* push (symbolp pop[1]) */
#define OP_GET 0x7a			/* call-2 get */
#define OP_PUT 0x7b			/* call-3 put */
#define OP_ERRORPRO 0x7c		/* cond = pop[1];
					   if match_error(stk[0], cond)
					    then bindsym (stk[1], cdr stk[0]),
					         stk[0] = nil */
#define OP_SIGNAL 0x7d			/* call-2 signal */
#define OP_QUOTIENT 0x7e
#define OP_REVERSE 0x7f			/* call-1 reverse */
#define OP_NREVERSE 0x80		/* call-1 nreverse */
#define OP_ASSOC 0x81			/* call-2 assoc */
#define OP_ASSQ 0x82			/* call-2 assq */
#define OP_RASSOC 0x83			/* call-2 rassoc */
#define OP_RASSQ 0x84			/* call-2 rassq */
#define OP_LAST 0x85			/* call-1 last */
#define OP_MAPCAR 0x86			/* call-2 mapcar */
#define OP_MAPC 0x87			/* call-1 mapc */
#define OP_MEMBER 0x88			/* call-2 member */
#define OP_MEMQ 0x89			/* call-2 memq */
#define OP_DELETE 0x8a			/* call-2 delete */
#define OP_DELQ 0x8b			/* call-2 delq */
#define OP_DELETE_IF 0x8c		/* call-2 delete-if */
#define OP_DELETE_IF_NOT 0x8d		/* call-2 delete-if-not */
#define OP_COPY_SEQUENCE 0x8e		/* call-1 copy-sequence */
#define OP_SEQUENCEP 0x8f		/* call-1 sequencep */
#define OP_FUNCTIONP 0x90		/* call-1 functionp */
#define OP_SPECIAL_FORM_P 0x91		/* call-1 special-form-p */
#define OP_SUBRP 0x92			/* call-1 subrp */
#define OP_EQL 0x93			/* push (eql pop[1] pop[2]) */
#define OP_LXOR 0x94			/* push (logxor pop[1] pop[2] */
#define OP_MAX 0x95			/* push (max pop[1] pop[2]) */
#define OP_MIN 0x96			/* push (min pop[1] pop[2]) */
#define OP_FILTER 0x97			/* call-2 filter */
#define OP_MACROP 0x98			/* call-1 macrop */
#define OP_BYTECODEP 0x99		/* call-1 bytecodep */

#define OP_PUSHI0 0x9a			/* push #0 */
#define OP_PUSHI1 0x9b			/* push #1 */
#define OP_PUSHI2 0x9c			/* push #2 */
#define OP_PUSHIM1 0x9d			/* push #-1 */
#define OP_PUSHIM2 0x9e			/* push #-2 */
#define OP_PUSHI 0x9f			/* push (signed) pc[0] */
#define OP_PUSHIWN 0xa0			/* push (- pc[0,1]) */
#define OP_PUSHIWP 0xa1			/* push (+ pc[0,1]) */

#define OP_CAAR 0xa2			/* push (car (car pop[1])) */
#define OP_CADR 0xa3			/* push (car (cdr pop[1])) */
#define OP_CDAR 0xa4			/* push (cdr (car pop[1])) */
#define OP_CDDR 0xa5			/* push (cdr (cdr pop[1])) */

#define OP_CADDR 0xa6
#define OP_CADDDR 0xa7
#define OP_CADDDDR 0xa8
#define OP_CADDDDDR 0xa9
#define OP_CADDDDDDR 0xaa
#define OP_CADDDDDDDR 0xab

#define OP_FLOOR 0xac
#define OP_CEILING 0xad
#define OP_TRUNCATE 0xae
#define OP_ROUND 0xaf

#define OP_APPLY 0xb0
#define OP_FORBID 0xb1
#define OP_PERMIT 0xb2

#define OP_EXP 0xb3
#define OP_LOG 0xb4
#define OP_SIN 0xb5
#define OP_COS 0xb6
#define OP_TAN 0xb7
#define OP_SQRT 0xb8
#define OP_EXPT 0xb9

#define OP_SWAP2 0xba			/* stk[0] = stk[1], stk[1] = stk[2],
					   stk[2] = stk[0]. */

#define OP_MOD 0xbb			/* push (mod pop[1] pop[2]) */

#define OP_MAKE_CLOSURE 0xbc		/* push (make-closure pop[1] pop[2]) */
#define OP_UNBINDALL_0 0xbd
#define OP_CLOSUREP 0xbe		/* push (closurep pop[1]) */
#define OP_POP_ALL 0xbf

#define OP_FLUID_SET 0xc0
#define OP_FLUID_BIND 0xc1

#define OP_MEMQL 0xc2			/* call-2 memql */
#define OP_NUM_EQ 0xc3
#define OP_TEST_SCM 0xc4
#define OP_TEST_SCM_F 0xc5
#define OP__DEFINE 0xc6
#define OP_SPEC_BIND 0xc7
#define OP_SET 0xc8

#define OP_REQUIRED_ARG 0xc9
#define OP_OPTIONAL_ARG 0xca
#define OP_REST_ARG 0xcb

#define OP_NOT_ZERO_P 0xcc

#define OP_KEYWORD_ARG 0xcd
#define OP_OPTIONAL_ARG_ 0xce
#define OP_KEYWORD_ARG_ 0xcf


/* Jump opcodes */

#define OP_LAST_BEFORE_JMPS 0xf7

#define OP_EJMP 0xf8			/* if (not pop[1]) jmp pc[0,1]
					   else throw_val = arg,
					        goto error-handler */
#define OP_JPN 0xf9			/* if (not stk[0]) pop; jmp pc[0,1] */
#define OP_JPT 0xfa			/* if stk[0] pop; jmp pc[0,1] */
#define OP_JMP 0xfb			/* jmp pc[0,1] */
#define OP_JN 0xfc			/* if (not pop[1]) jmp pc[0,1] */
#define OP_JT 0xfd			/* if pop[1] jmp pc[0,1] */
#define OP_JNP 0xfe			/* if (not stk[0]) jmp else pop */
#define OP_JTP 0xff			/* if stk[0] jmp else pop */

#endif /* BYTECODES_H */
