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

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

   Copyright (C) 2008 Embecosm Limited

   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

   This file is part of Or1ksim, the 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 3 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, see <http://www.gnu.org/licenses/>.  */

/* This program is commented throughout in a fashion suitable for processing

   with Doxygen. */

#ifndef INSN__H

#define INSN__H

#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_BF    21

#define II_LRBB  22

#define II_CMOV  23

#define II_REG   24

#define II_NOP   25

#define II_CALL  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_IS_STORE(x) ((x) == II_SB || (x) == II_SH || (x) == II_SW)

#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);

/* 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  /* INSN__H */