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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_ */