gencode.c revision 1.1
1/* Simulation code for the CR16 processor. 2 Copyright (C) 2008-2014 Free Software Foundation, Inc. 3 Contributed by M Ranga Swami Reddy <MR.Swami.Reddy@nsc.com> 4 5 This file is part of GDB, the GNU debugger. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 21#include "config.h" 22#include <stdio.h> 23#include <ctype.h> 24#include <limits.h> 25#include "ansidecl.h" 26#include "opcode/cr16.h" 27 28static void write_header (void); 29static void write_opcodes (void); 30static void write_template (void); 31 32int 33main (int argc, char *argv[]) 34{ 35 if ((argc > 1) && (strcmp (argv[1],"-h") == 0)) 36 write_header(); 37 else if ((argc > 1) && (strcmp (argv[1],"-t") == 0)) 38 write_template (); 39 else 40 write_opcodes(); 41 return 0; 42} 43 44 45static void 46write_header () 47{ 48 int i = 0; 49 50 /* Start searching from end of instruction table. */ 51 const inst *instruction = &cr16_instruction[NUMOPCODES - 1]; 52 53 /* Loop over instruction table until a full match is found. */ 54 for ( ; i < NUMOPCODES; i++) 55 { 56 printf("void OP_%X_%X (void);\t\t/* %s */\n",cr16_instruction[i].match, (32 - cr16_instruction[i].match_bits), cr16_instruction[i].mnemonic); 57 } 58} 59 60 61/* write_template creates a file all required functions, 62 ready to be filled out. */ 63 64static void 65write_template () 66{ 67 int i = 0,j, k, flags; 68 69 printf ("#include \"cr16_sim.h\"\n"); 70 printf ("#include \"simops.h\"\n\n"); 71 72 for ( ; i < NUMOPCODES; i++) 73 { 74 if (cr16_instruction[i].size != 0) 75{ 76 printf("/* %s */\nvoid\nOP_%X_%X ()\n{\n",cr16_instruction[i].mnemonic,cr16_instruction[i].match,(32 - cr16_instruction[i].match_bits)); 77 78 /* count operands. */ 79 j = 0; 80 for (k=0;k<5;k++) 81 { 82 if (cr16_instruction[i].operands[k].op_type == dummy) 83 break; 84 else 85 j++; 86 } 87 switch (j) 88 { 89 case 0: 90 printf ("printf(\" %s\\n\");\n",cr16_instruction[i].mnemonic); 91 break; 92 case 1: 93 printf ("printf(\" %s\\t%%x\\n\",OP[0]);\n",cr16_instruction[i].mnemonic); 94 break; 95 case 2: 96 printf ("printf(\" %s\\t%%x,%%x\\n\",OP[0],OP[1]);\n",cr16_instruction[i].mnemonic); 97 break; 98 case 3: 99 printf ("printf(\" %s\\t%%x,%%x,%%x\\n\",OP[0],OP[1],OP[2]);\n",cr16_instruction[i].mnemonic); 100 break; 101 default: 102 fprintf (stderr,"Too many operands: %d\n",j); 103 } 104 printf ("}\n\n"); 105} 106 } 107} 108 109 110long Opcodes[512]; 111static int curop=0; 112 113check_opcodes( long op) 114{ 115 int i; 116 117 for (i=0;i<curop;i++) 118 if (Opcodes[i] == op) 119 fprintf(stderr,"DUPLICATE OPCODES: %x\n",op); 120} 121 122 123static void 124write_opcodes () 125{ 126 int i = 0, j = 0, k; 127 128 /* write out opcode table. */ 129 printf ("#include \"cr16_sim.h\"\n"); 130 printf ("#include \"simops.h\"\n\n"); 131 printf ("struct simops Simops[] = {\n"); 132 133 for (i = NUMOPCODES-1; i >= 0; --i) 134 { 135 if (cr16_instruction[i].size != 0) 136{ 137 printf (" { \"%s\", %ld, %d, %d, %d, \"OP_%X_%X\", OP_%X_%X, ", 138 cr16_instruction[i].mnemonic, cr16_instruction[i].size, 139 cr16_instruction[i].match_bits, cr16_instruction[i].match, 140 cr16_instruction[i].flags, ((BIN(cr16_instruction[i].match, cr16_instruction[i].match_bits))>>(cr16_instruction[i].match_bits)), 141 (32 - cr16_instruction[i].match_bits), 142 ((BIN(cr16_instruction[i].match, cr16_instruction[i].match_bits))>>(cr16_instruction[i].match_bits)), (32 - cr16_instruction[i].match_bits)); 143 144 j = 0; 145 for (k=0;k<5;k++) 146 { 147 if (cr16_instruction[i].operands[k].op_type == dummy) 148 break; 149 else 150 j++; 151 } 152 printf ("%d, ",j); 153 154 j = 0; 155 for (k=0;k<4;k++) 156 { 157 int optype = cr16_instruction[i].operands[k].op_type; 158 int shift = cr16_instruction[i].operands[k].shift; 159 if (j == 0) 160 printf ("{"); 161 else 162 printf (", "); 163 printf ("{"); 164 printf ("%d,%d",optype, shift); 165 printf ("}"); 166 j = 1; 167 } 168 if (j) 169 printf ("}"); 170 printf ("},\n"); 171 } 172 } 173 printf (" { \"NULL\",1,8,0,0,\"OP_0_20\",OP_0_20,0,{0,0,0}},\n};\n"); 174} 175