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/* insn.h -- OpenRISC Custom Unit Compiler, internal instruction definitions

 *    Copyright (C) 2002 Marko Mlinar, markom@opencores.org

 *

 *    This file is part of OpenRISC 1000 Architectural Simulator.

 *

 *    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 of the License, 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 program; if not, write to the Free Software

 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */

#ifndef _DF_INSN_

#define _DF_INSN_

#include "cuc.h"

/* Instruction types */

#define II_ADD   0

#define II_SUB   1

#define II_AND   2

#define II_OR    3

#define II_XOR   4

#define II_MUL   5

#define II_SRL   6

#define II_SLL   7

#define II_SRA   8

#define II_LB    9

#define II_LH    10

#define II_LW    11

#define II_SB    12

#define II_SH    13

#define II_SW    14

#define II_SFEQ  15

#define II_SFNE  16

#define II_SFLE  17

#define II_SFLT  18

#define II_SFGE  19

#define II_SFGT  20

#define II_SFOR  21

#define II_BF    22

#define II_LRBB  23

#define II_CMOV  24

#define II_REG   25

#define II_NOP   26

#define II_LAST  26

/* misc flags */

#define II_MASK   0x0fff

#define II_MEM    0x1000

#define II_SIGNED 0x2000

#define II_IS_LOAD(x) ((x) == II_LB || (x) == II_LH || (x) == II_LW)

#define II_MEM_WIDTH(x) (((x) == II_LB || (x) == II_SB) ? 1 :\

                         ((x) == II_LH || (x) == II_SH) ? 2 :\

                         ((x) == II_LW || (x) == II_SW) ? 4 : -1)

/* List of known instructions and their rtl representation */

typedef struct {

        char *name;

        int  comutative;

        char *rtl;

} cuc_known_insn;

extern const cuc_known_insn known[II_LAST + 1];

/* Timing table -- same indexes as known table */

typedef struct {

        double delay;

        double size;

        double delayi;

        double sizei;

} cuc_timing_table;

/* Conversion links */

typedef struct {

        const char *from;

        const int to;

} cuc_conv;

/* normal (not immediate) size of a function */

double ii_size (int index, int imm);

/* Returns instruction size */

double insn_time (cuc_insn *ii);

/* Returns instruction time */

double insn_size (cuc_insn *ii);

/* Find known instruction and attach them to insn */

void change_insn_type (cuc_insn *i, int index);

/* Search and otimize complex cmov assignments */

void optimize_cmovs (cuc_func *f);

/* Returns instruction name */

const char *cuc_insn_name (cuc_insn *ii);

/* Loads in the specified timings table */

void load_timing_table (char *filename);

/* Displays shared instructions */

void print_shared (cuc_func *rf, cuc_shared_item *shared, int nshared);

#endif /* _DF_INSN_ */