[8833] | 1 | /* Generate from machine description: |
---|
| 2 | |
---|
| 3 | - some flags HAVE_... saying which simple standard instructions are |
---|
| 4 | available for this machine. |
---|
| 5 | Copyright (C) 1987, 1991, 1995 Free Software Foundation, Inc. |
---|
| 6 | |
---|
| 7 | This file is part of GNU CC. |
---|
| 8 | |
---|
| 9 | GNU CC is free software; you can redistribute it and/or modify |
---|
| 10 | it under the terms of the GNU General Public License as published by |
---|
| 11 | the Free Software Foundation; either version 2, or (at your option) |
---|
| 12 | any later version. |
---|
| 13 | |
---|
| 14 | GNU CC is distributed in the hope that it will be useful, |
---|
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 17 | GNU General Public License for more details. |
---|
| 18 | |
---|
| 19 | You should have received a copy of the GNU General Public License |
---|
| 20 | along with GNU CC; see the file COPYING. If not, write to |
---|
| 21 | the Free Software Foundation, 59 Temple Place - Suite 330, |
---|
| 22 | Boston, MA 02111-1307, USA. */ |
---|
| 23 | |
---|
| 24 | |
---|
| 25 | #include <stdio.h> |
---|
| 26 | #include "hconfig.h" |
---|
| 27 | #include "rtl.h" |
---|
| 28 | #include "obstack.h" |
---|
| 29 | |
---|
| 30 | static struct obstack obstack; |
---|
| 31 | struct obstack *rtl_obstack = &obstack; |
---|
| 32 | |
---|
| 33 | #define obstack_chunk_alloc xmalloc |
---|
| 34 | #define obstack_chunk_free free |
---|
| 35 | |
---|
| 36 | extern void free (); |
---|
| 37 | extern rtx read_rtx (); |
---|
| 38 | |
---|
| 39 | char *xmalloc (); |
---|
| 40 | static void fatal (); |
---|
| 41 | void fancy_abort (); |
---|
| 42 | |
---|
| 43 | /* Names for patterns. Need to allow linking with print-rtl. */ |
---|
| 44 | char **insn_name_ptr; |
---|
| 45 | |
---|
| 46 | /* Obstacks to remember normal, and call insns. */ |
---|
| 47 | static struct obstack call_obstack, normal_obstack; |
---|
| 48 | |
---|
| 49 | /* Max size of names encountered. */ |
---|
| 50 | static int max_id_len; |
---|
| 51 | |
---|
| 52 | /* Count the number of match_operand's found. */ |
---|
| 53 | static int |
---|
| 54 | num_operands (x) |
---|
| 55 | rtx x; |
---|
| 56 | { |
---|
| 57 | int count = 0; |
---|
| 58 | int i, j; |
---|
| 59 | enum rtx_code code = GET_CODE (x); |
---|
| 60 | char *format_ptr = GET_RTX_FORMAT (code); |
---|
| 61 | |
---|
| 62 | if (code == MATCH_OPERAND) |
---|
| 63 | return 1; |
---|
| 64 | |
---|
| 65 | if (code == MATCH_OPERATOR || code == MATCH_PARALLEL) |
---|
| 66 | count++; |
---|
| 67 | |
---|
| 68 | for (i = 0; i < GET_RTX_LENGTH (code); i++) |
---|
| 69 | { |
---|
| 70 | switch (*format_ptr++) |
---|
| 71 | { |
---|
| 72 | case 'u': |
---|
| 73 | case 'e': |
---|
| 74 | count += num_operands (XEXP (x, i)); |
---|
| 75 | break; |
---|
| 76 | |
---|
| 77 | case 'E': |
---|
| 78 | if (XVEC (x, i) != NULL) |
---|
| 79 | for (j = 0; j < XVECLEN (x, i); j++) |
---|
| 80 | count += num_operands (XVECEXP (x, i, j)); |
---|
| 81 | |
---|
| 82 | break; |
---|
| 83 | } |
---|
| 84 | } |
---|
| 85 | |
---|
| 86 | return count; |
---|
| 87 | } |
---|
| 88 | |
---|
| 89 | /* Print out prototype information for a function. */ |
---|
| 90 | static void |
---|
| 91 | gen_proto (insn) |
---|
| 92 | rtx insn; |
---|
| 93 | { |
---|
| 94 | int num = num_operands (insn); |
---|
| 95 | printf ("extern rtx gen_%-*s PROTO((", max_id_len, XSTR (insn, 0)); |
---|
| 96 | |
---|
| 97 | if (num == 0) |
---|
| 98 | printf ("void"); |
---|
| 99 | else |
---|
| 100 | { |
---|
| 101 | while (num-- > 1) |
---|
| 102 | printf ("rtx, "); |
---|
| 103 | |
---|
| 104 | printf ("rtx"); |
---|
| 105 | } |
---|
| 106 | |
---|
| 107 | printf ("));\n"); |
---|
| 108 | } |
---|
| 109 | |
---|
| 110 | /* Print out a function declaration without a prototype. */ |
---|
| 111 | static void |
---|
| 112 | gen_nonproto (insn) |
---|
| 113 | rtx insn; |
---|
| 114 | { |
---|
| 115 | printf ("extern rtx gen_%s ();\n", XSTR (insn, 0)); |
---|
| 116 | } |
---|
| 117 | |
---|
| 118 | static void |
---|
| 119 | gen_insn (insn) |
---|
| 120 | rtx insn; |
---|
| 121 | { |
---|
| 122 | char *name = XSTR (insn, 0); |
---|
| 123 | char *p; |
---|
| 124 | struct obstack *obstack_ptr; |
---|
| 125 | int len; |
---|
| 126 | |
---|
| 127 | /* Don't mention instructions whose names are the null string |
---|
| 128 | or begin with '*'. They are in the machine description just |
---|
| 129 | to be recognized. */ |
---|
| 130 | if (name[0] == 0 || name[0] == '*') |
---|
| 131 | return; |
---|
| 132 | |
---|
| 133 | len = strlen (name); |
---|
| 134 | |
---|
| 135 | if (len > max_id_len) |
---|
| 136 | max_id_len = len; |
---|
| 137 | |
---|
| 138 | printf ("#define HAVE_%s ", name); |
---|
| 139 | if (strlen (XSTR (insn, 2)) == 0) |
---|
| 140 | printf ("1\n"); |
---|
| 141 | else |
---|
| 142 | { |
---|
| 143 | /* Write the macro definition, putting \'s at the end of each line, |
---|
| 144 | if more than one. */ |
---|
| 145 | printf ("("); |
---|
| 146 | for (p = XSTR (insn, 2); *p; p++) |
---|
| 147 | { |
---|
| 148 | if (*p == '\n') |
---|
| 149 | printf (" \\\n"); |
---|
| 150 | else |
---|
| 151 | printf ("%c", *p); |
---|
| 152 | } |
---|
| 153 | printf (")\n"); |
---|
| 154 | } |
---|
| 155 | |
---|
| 156 | /* Save the current insn, so that we can later put out appropriate |
---|
| 157 | prototypes. At present, most md files have the wrong number of |
---|
| 158 | arguments for the call insns (call, call_value, call_pop, |
---|
| 159 | call_value_pop) ignoring the extra arguments that are passed for |
---|
| 160 | some machines, so by default, turn off the prototype. */ |
---|
| 161 | |
---|
| 162 | obstack_ptr = (name[0] == 'c' |
---|
| 163 | && (!strcmp (name, "call") |
---|
| 164 | || !strcmp (name, "call_value") |
---|
| 165 | || !strcmp (name, "call_pop") |
---|
| 166 | || !strcmp (name, "call_value_pop"))) |
---|
| 167 | ? &call_obstack : &normal_obstack; |
---|
| 168 | |
---|
| 169 | obstack_grow (obstack_ptr, &insn, sizeof (rtx)); |
---|
| 170 | } |
---|
| 171 | |
---|
| 172 | char * |
---|
| 173 | xmalloc (size) |
---|
| 174 | unsigned size; |
---|
| 175 | { |
---|
| 176 | register char *val = (char *) malloc (size); |
---|
| 177 | |
---|
| 178 | if (val == 0) |
---|
| 179 | fatal ("virtual memory exhausted"); |
---|
| 180 | |
---|
| 181 | return val; |
---|
| 182 | } |
---|
| 183 | |
---|
| 184 | char * |
---|
| 185 | xrealloc (ptr, size) |
---|
| 186 | char *ptr; |
---|
| 187 | unsigned size; |
---|
| 188 | { |
---|
| 189 | char *result = (char *) realloc (ptr, size); |
---|
| 190 | if (!result) |
---|
| 191 | fatal ("virtual memory exhausted"); |
---|
| 192 | return result; |
---|
| 193 | } |
---|
| 194 | |
---|
| 195 | static void |
---|
| 196 | fatal (s, a1, a2) |
---|
| 197 | char *s; |
---|
| 198 | { |
---|
| 199 | fprintf (stderr, "genflags: "); |
---|
| 200 | fprintf (stderr, s, a1, a2); |
---|
| 201 | fprintf (stderr, "\n"); |
---|
| 202 | exit (FATAL_EXIT_CODE); |
---|
| 203 | } |
---|
| 204 | |
---|
| 205 | /* More 'friendly' abort that prints the line and file. |
---|
| 206 | config.h can #define abort fancy_abort if you like that sort of thing. */ |
---|
| 207 | |
---|
| 208 | void |
---|
| 209 | fancy_abort () |
---|
| 210 | { |
---|
| 211 | fatal ("Internal gcc abort."); |
---|
| 212 | } |
---|
| 213 | |
---|
| 214 | int |
---|
| 215 | main (argc, argv) |
---|
| 216 | int argc; |
---|
| 217 | char **argv; |
---|
| 218 | { |
---|
| 219 | rtx desc; |
---|
| 220 | rtx dummy; |
---|
| 221 | rtx *call_insns; |
---|
| 222 | rtx *normal_insns; |
---|
| 223 | rtx *insn_ptr; |
---|
| 224 | FILE *infile; |
---|
| 225 | register int c; |
---|
| 226 | |
---|
| 227 | obstack_init (rtl_obstack); |
---|
| 228 | obstack_init (&call_obstack); |
---|
| 229 | obstack_init (&normal_obstack); |
---|
| 230 | |
---|
| 231 | if (argc <= 1) |
---|
| 232 | fatal ("No input file name."); |
---|
| 233 | |
---|
| 234 | infile = fopen (argv[1], "r"); |
---|
| 235 | if (infile == 0) |
---|
| 236 | { |
---|
| 237 | perror (argv[1]); |
---|
| 238 | exit (FATAL_EXIT_CODE); |
---|
| 239 | } |
---|
| 240 | |
---|
| 241 | init_rtl (); |
---|
| 242 | |
---|
| 243 | printf ("/* Generated automatically by the program `genflags'\n\ |
---|
| 244 | from the machine description file `md'. */\n\n"); |
---|
| 245 | |
---|
| 246 | /* Read the machine description. */ |
---|
| 247 | |
---|
| 248 | while (1) |
---|
| 249 | { |
---|
| 250 | c = read_skip_spaces (infile); |
---|
| 251 | if (c == EOF) |
---|
| 252 | break; |
---|
| 253 | ungetc (c, infile); |
---|
| 254 | |
---|
| 255 | desc = read_rtx (infile); |
---|
| 256 | if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND) |
---|
| 257 | gen_insn (desc); |
---|
| 258 | } |
---|
| 259 | |
---|
| 260 | /* Print out the prototypes now. */ |
---|
| 261 | dummy = (rtx)0; |
---|
| 262 | obstack_grow (&call_obstack, &dummy, sizeof (rtx)); |
---|
| 263 | call_insns = (rtx *) obstack_finish (&call_obstack); |
---|
| 264 | |
---|
| 265 | obstack_grow (&normal_obstack, &dummy, sizeof (rtx)); |
---|
| 266 | normal_insns = (rtx *) obstack_finish (&normal_obstack); |
---|
| 267 | |
---|
| 268 | printf ("\n#ifndef NO_MD_PROTOTYPES\n"); |
---|
| 269 | for (insn_ptr = normal_insns; *insn_ptr; insn_ptr++) |
---|
| 270 | gen_proto (*insn_ptr); |
---|
| 271 | |
---|
| 272 | printf ("\n#ifdef MD_CALL_PROTOTYPES\n"); |
---|
| 273 | for (insn_ptr = call_insns; *insn_ptr; insn_ptr++) |
---|
| 274 | gen_proto (*insn_ptr); |
---|
| 275 | |
---|
| 276 | printf ("\n#else /* !MD_CALL_PROTOTYPES */\n"); |
---|
| 277 | for (insn_ptr = call_insns; *insn_ptr; insn_ptr++) |
---|
| 278 | gen_nonproto (*insn_ptr); |
---|
| 279 | |
---|
| 280 | printf ("#endif /* !MD_CALL_PROTOTYPES */\n"); |
---|
| 281 | printf ("\n#else /* NO_MD_PROTOTYPES */\n"); |
---|
| 282 | for (insn_ptr = normal_insns; *insn_ptr; insn_ptr++) |
---|
| 283 | gen_nonproto (*insn_ptr); |
---|
| 284 | |
---|
| 285 | for (insn_ptr = call_insns; *insn_ptr; insn_ptr++) |
---|
| 286 | gen_nonproto (*insn_ptr); |
---|
| 287 | |
---|
| 288 | printf ("#endif /* NO_MD_PROTOTYPES */\n"); |
---|
| 289 | |
---|
| 290 | fflush (stdout); |
---|
| 291 | exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE); |
---|
| 292 | /* NOTREACHED */ |
---|
| 293 | return 0; |
---|
| 294 | } |
---|