예제 #1
0
int
main(int argc,
     char **argv,
     char **envp)
{
  cache_table *cache_rules = NULL;
  lf_file_references file_references = lf_include_references;
  decode_table *decode_rules = NULL;
  filter *filters = NULL;
  insn_table *instructions = NULL;
  table_include *includes = NULL;
  char *real_file_name = NULL;
  int is_header = 0;
  int ch;

  if (argc == 1) {
    printf("Usage:\n");
    printf("  igen <config-opts> ... <input-opts>... <output-opts>...\n");
    printf("Config options:\n");
    printf("  -F <filter-out-flag>  eg -F 64 to skip 64bit instructions\n");
    printf("  -E                    Expand (duplicate) semantic functions\n");
    printf("  -I <icache-size>      Generate cracking cache version\n");
    printf("  -C                    Include semantics in cache functions\n");
    printf("  -S                    Include insn (instruction) in icache\n");
    printf("  -R                    Use defines to reference cache vars\n");
    printf("  -L                    Supress line numbering in output files\n");
    printf("  -B <bit-size>         Set the number of bits in an instruction\n");
    printf("  -H <high-bit>         Set the nr of the high (msb bit)\n");
    printf("  -N <nr-cpus>          Specify the max number of cpus the simulation will support\n");
    printf("  -J                    Use jumps instead of function calls\n");
    printf("  -T <mechanism>        Override the mechanism used to decode an instruction\n");
    printf("                        using <mechanism> instead of what was specified in the\n");
    printf("                        decode-rules input file\n");
    printf("\n");
    printf("Input options (ucase version also dumps loaded table):\n");
    printf("  -o <decode-rules>\n");
    printf("  -k <cache-rules>\n");
    printf("  -i <instruction-table>\n");
    printf("\n");
    printf("Output options:\n");
    printf("  -n <real-name>        Specify the real name of for the next output file\n"); 
    printf("  -h 		    Generate header file\n");
    printf("  -c <output-file>      output icache\n");
    printf("  -d <output-file>      output idecode\n");
    printf("  -m <output-file>      output model\n");
    printf("  -s <output-file>      output schematic\n");
    printf("  -t <output-file>      output itable\n");
    printf("  -f <output-file>      output support functions\n");
  }

  while ((ch = getopt(argc, argv,
		      "F:EI:RSLJT:CB:H:N:o:k:i:n:hc:d:m:s:t:f:"))
	 != -1) {
    fprintf(stderr, "\t-%c %s\n", ch, (optarg ? optarg : ""));
    switch(ch) {
    case 'C':
      code |= generate_with_icache;
      code |= generate_with_semantic_icache;
      break;
    case 'S':
      code |= generate_with_icache;
      code |= generate_with_insn_in_icache;
      break;
    case 'L':
      file_references = lf_omit_references;
      break;
    case 'E':
      generate_expanded_instructions = 1;
      break;
    case 'G':
      {
	int enable_p;
	char *argp;
	if (strncmp (optarg, "no-", strlen ("no-")) == 0)
	  {
	    argp = optarg + strlen ("no-");
	    enable_p = 0;
	  }
	else if (strncmp (optarg, "!", strlen ("!")) == 0)
	  {
	    argp = optarg + strlen ("no-");
	    enable_p = 0;
	  }
	else
	  {
	    argp = optarg;
	    enable_p = 1;
	  }
        if (strncmp (argp, "gen-icache", strlen ("gen-icache")) == 0)
          {
            switch (argp[strlen ("gen-icache")])
              {
              case '=':
	        icache_size = atoi (argp + strlen ("gen-icache") + 1);
	        code |= generate_with_icache;
                break;
              case '\0':
	        code |= generate_with_icache;
                break;
              default:
                error (NULL, "Expecting -Ggen-icache or -Ggen-icache=<N>\n");
              }
          }
	}
    case 'I':
      {
	table_include **dir = &includes;
	while ((*dir) != NULL)
	  dir = &(*dir)->next;
	(*dir) = ZALLOC (table_include);
	(*dir)->dir = strdup (optarg);
      }
      break;
    case 'N':
      generate_smp = a2i(optarg);
      break;
    case 'R':
      code |= generate_with_direct_access;
      break;
    case 'B':
      insn_bit_size = a2i(optarg);
      ASSERT(insn_bit_size > 0 && insn_bit_size <= max_insn_bit_size
	     && (hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0));
      break;
    case 'H':
      hi_bit_nr = a2i(optarg);
      ASSERT(hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0);
      break;
    case 'F':
      filters = new_filter(optarg, filters);
      break;
    case 'J':
      code &= ~generate_calls;
      code |= generate_jumps;
      break;
    case 'T':
      force_decode_gen_type(optarg);
      break;
    case 'i':
      if (decode_rules == NULL) {
	fprintf(stderr, "Must specify decode tables\n");
	exit (1);
      }
      instructions = load_insn_table(optarg, decode_rules, filters, includes,
				     &cache_rules);
      fprintf(stderr, "\texpanding ...\n");
      insn_table_expand_insns(instructions);
      break;
    case 'o':
      decode_rules = load_decode_table(optarg, hi_bit_nr);
      break;
    case 'k':
      cache_rules = load_cache_table(optarg, hi_bit_nr);
      break;
    case 'n':
      real_file_name = strdup(optarg);
      break;
    case 'h':
      is_header = 1;
      break;
    case 's':
    case 'd':
    case 'm':
    case 't':
    case 'f':
    case 'c':
      {
	lf *file = lf_open(optarg, real_file_name, file_references,
			   (is_header ? lf_is_h : lf_is_c),
			   argv[0]);
	lf_print__file_start(file);
	ASSERT(instructions != NULL);
	switch (ch) {
	case 's':
	  if(is_header)
	    gen_semantics_h(instructions, file, code);
	  else
	    gen_semantics_c(instructions, cache_rules, file, code);
	  break;
	case 'd':
	  if (is_header)
	    gen_idecode_h(file, instructions, cache_rules);
	  else
	    gen_idecode_c(file, instructions, cache_rules);
	  break;
	case 'm':
	  if (is_header)
	    gen_model_h(instructions, file);
	  else
	    gen_model_c(instructions, file);
	  break;
	case 't':
	  if (is_header)
	    gen_itable_h(instructions, file);
	  else
	    gen_itable_c(instructions, file);
	  break;
	case 'f':
	  if (is_header)
	    gen_support_h(instructions, file);
	  else
	    gen_support_c(instructions, file);
	  break;
	case 'c':
	  if (is_header)
	    gen_icache_h(instructions, file, code);
	  else
	    gen_icache_c(instructions, cache_rules, file, code);
	  break;
	}
	lf_print__file_finish(file);
	lf_close(file);
	is_header = 0;
      }
      real_file_name = NULL;
      break;
    default:
      error("unknown option\n");
    }
  }
  return 0;
}
예제 #2
0
int
main (int argc,
      char **argv,
      char **envp)
{
  cache_entry *cache_rules = NULL;
  lf_file_references file_references = lf_include_references;
  decode_table *decode_rules = NULL;
  insn_table *isa = NULL;
  gen_table *gen = NULL;
  char *real_file_name = NULL;
  int is_header = 0;
  int ch;
  lf *standard_out = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "igen");

  INIT_OPTIONS ();

  if (argc == 1)
    {
      printf ("Usage:\n");
      printf ("\n");
      printf ("  igen <config-opts> ... <input-opts>... <output-opts>...\n");
      printf ("\n");
      printf ("Config options:\n");
      printf ("\n");
      printf ("  -B <bit-size>\n");
      printf ("\t Set the number of bits in an instruction (depreciated).\n");
      printf ("\t This option can now be set directly in the instruction table.\n");
      printf ("\n");
      printf ("  -D <data-structure>\n");
      printf ("\t Dump the specified data structure to stdout. Valid structures include:\n");
      printf ("\t processor-names - list the names of all the processors (models)\n");
      printf ("\n");
      printf ("  -F <filter-list>\n");
      printf ("\t Filter out any instructions with a non-empty flags field that contains\n");
      printf ("\t a flag not listed in the <filter-list>.\n");
      printf ("\n");
      printf ("  -H <high-bit>\n");
      printf ("\t Set the number of the high (most significant) instruction bit (depreciated).\n");
      printf ("\t This option can now be set directly in the instruction table.\n");
      printf ("\n");
      printf ("  -I <directory>\n");
      printf ("\t Add <directory> to the list of directories searched when opening a file\n");
      printf ("\n");
      printf ("  -M <model-list>\n");
      printf ("\t Filter out any instructions that do not support at least one of the listed\n");
      printf ("\t models (An instructions with no model information is considered to support\n");
      printf ("\t all models.).\n");
      printf ("\n");
      printf ("  -N <nr-cpus>\n");
      printf ("\t Generate a simulator supporting <nr-cpus>\n");
      printf ("\t Specify `-N 0' to disable generation of the SMP. Specifying `-N 1' will\n");
      printf ("\t still generate an SMP enabled simulator but will only support one CPU.\n");
      printf ("\n");
      printf ("  -T <mechanism>\n");
      printf ("\t Override the decode mechanism specified by the decode rules\n");
      printf ("\n");
      printf ("  -P <prefix>\n");
      printf ("\t Prepend global names (except itable) with the string <prefix>.\n");
      printf ("\t Specify -P <module>=<prefix> to set a specific <module>'s prefix.\n");
      printf ("\n");
      printf ("  -S <suffix>\n");
      printf ("\t Replace a global name (suffix) (except itable) with the string <suffix>.\n");
      printf ("\t Specify -S <module>=<suffix> to change a specific <module>'s name (suffix).\n");
      printf ("\n");
      printf ("  -Werror\n");
      printf ("\t Make warnings errors\n");
      printf ("  -Wnodiscard\n");
      printf ("\t Suppress warnings about discarded functions and instructions\n");
      printf ("  -Wnowidth\n");
      printf ("\t Suppress warnings about instructions with invalid widths\n");
      printf ("  -Wnounimplemented\n");
      printf ("\t Suppress warnings about unimplemented instructions\n");
      printf ("\n");
      printf ("  -G [!]<gen-option>\n");
      printf ("\t Any of the following options:\n");
      printf ("\n");
      printf ("\t decode-duplicate       - Override the decode rules, forcing the duplication of\n");
      printf ("\t                          semantic functions\n");
      printf ("\t decode-combine         - Combine any duplicated entries within a table\n");
      printf ("\t decode-zero-reserved   - Override the decode rules, forcing reserved bits to be\n");
      printf ("\t                          treated as zero.\n");
      printf ("\t decode-switch-is-goto  - Overfide the padded-switch code type as a goto-switch\n");
      printf ("\n");
      printf ("\t gen-conditional-issue  - conditionally issue each instruction\n");
      printf ("\t gen-delayed-branch     - need both cia and nia passed around\n");
      printf ("\t gen-direct-access      - use #defines to directly access values\n");
      printf ("\t gen-zero-r<N>          - arch assumes GPR(<N>) == 0, keep it that way\n");
      printf ("\t gen-icache[=<N>        - generate an instruction cracking cache of size <N>\n");
      printf ("\t                          Default size is %d\n", options.gen.icache_size);
      printf ("\t gen-insn-in-icache     - save original instruction when cracking\n");
      printf ("\t gen-multi-sim[=MODEL]  - generate multiple simulators - one per model\n");
      printf ("\t                          If specified MODEL is made the default architecture.\n");
      printf ("\t                          By default, a single simulator that will\n");
      printf ("\t                          execute any instruction is generated\n");
      printf ("\t gen-multi-word         - generate code allowing for multi-word insns\n");
      printf ("\t gen-semantic-icache    - include semantic code in cracking functions\n");
      printf ("\t gen-slot-verification  - perform slot verification as part of decode\n");
      printf ("\t gen-nia-invalid        - NIA defaults to nia_invalid\n");
      printf ("\t gen-nia-void           - do not compute/return NIA\n");
      printf ("\n");
      printf ("\t trace-combine          - report combined entries a rule application\n");
      printf ("\t trace-entries          - report entries after a rules application\n");
      printf ("\t trace-rule-rejection   - report each rule as rejected\n");
      printf ("\t trace-rule-selection   - report each rule as selected\n");
      printf ("\t trace-insn-insertion   - report each instruction as it is inserted into a decode table\n");
      printf ("\t trace-rule-expansion   - report each instruction as it is expanded (before insertion into a decode table)\n");
      printf ("\t trace-all              - enable all trace options\n");
      printf ("\n");
      printf ("\t field-widths           - instruction formats specify widths (depreciated)\n");
      printf ("\t                          By default, an instruction format specifies bit\n");
      printf ("\t                          positions\n");
      printf ("\t                          This option can now be set directly in the\n");
      printf ("\t                          instruction table\n");
      printf ("\t jumps                  - use jumps instead of function calls\n");
      printf ("\t omit-line-numbers      - do not include line number information in the output\n");
      printf ("\n");
      printf ("Input options:\n");
      printf ("\n");
      printf ("  -k <cache-rules> (depreciated)\n");
      printf ("  -o <decode-rules>\n");
      printf ("  -i <instruction-table>\n");
      printf ("\n");
      printf ("Output options:\n");
      printf ("\n");
      printf ("  -x                    Perform expansion (required)\n");
      printf ("  -n <real-name>        Specify the real name of the next output file\n"); 
      printf ("  -h 		       Generate the header (.h) file rather than the body (.c)\n");
      printf ("  -c <output-file>      output icache\n");
      printf ("  -d <output-file>      output idecode\n");
      printf ("  -e <output-file>      output engine\n");
      printf ("  -f <output-file>      output support functions\n");
      printf ("  -m <output-file>      output model\n");
      printf ("  -r <output-file>      output multi-sim run\n");
      printf ("  -s <output-file>      output schematic\n");
      printf ("  -t <output-file>      output itable\n");
    }
  
  while ((ch = getopt(argc, argv,
		      "B:D:F:G:H:I:M:N:P:T:W:o:k:i:n:hc:d:e:m:r:s:t:f:x"))
	 != -1)
    {
      fprintf (stderr, "  -%c ", ch);
      if (optarg)
	fprintf (stderr, "%s ", optarg);
      fprintf (stderr, "\\\n");
      
      switch(ch)
	{
	  
	case 'M':
	  filter_parse (&options.model_filter, optarg);
	  break;

	case 'D':
	  if (strcmp (optarg, "processor-names"))
	    {
	      char *processor;
	      for (processor = filter_next (options.model_filter, "");
		   processor != NULL;
		   processor = filter_next (options.model_filter, processor))
		lf_printf (standard_out, "%s\n", processor);
	    }
	  else
	    error (NULL, "Unknown data structure %s, not dumped\n", optarg);
	  break;

	case 'F':
	  filter_parse (&options.flags_filter, optarg);
	  break;
	  
	case 'I':
	  {
	    table_include **dir = &options.include;
	    while ((*dir) != NULL)
	      dir = &(*dir)->next;
	    (*dir) = ZALLOC (table_include);
	    (*dir)->dir = strdup (optarg);
	  }
	  break;
	  
	case 'B':
	  options.insn_bit_size = a2i (optarg);
	  if (options.insn_bit_size <= 0
	      || options.insn_bit_size > max_insn_bit_size)
	    {
	      error (NULL, "Instruction bitsize must be in range 1..%d\n",
		     max_insn_bit_size);
	    }
	  if (options.hi_bit_nr != options.insn_bit_size - 1
	      && options.hi_bit_nr != 0)
	    {
	      error (NULL, "Conflict betweem hi-bit-nr and insn-bit-size\n");
	    }
	  break;
	  
	case 'H':
	  options.hi_bit_nr = a2i (optarg);
	  if (options.hi_bit_nr != options.insn_bit_size - 1
	      && options.hi_bit_nr != 0)
	    {
	      error (NULL, "Conflict between hi-bit-nr and insn-bit-size\n");
	    }
	  break;
	  
	case 'N':
	  options.gen.smp = a2i (optarg);
	  break;
	  
	case 'P':
	case 'S':
	  {
	    igen_module *names;
	    igen_name *name;
	    char *chp;
	    chp = strchr (optarg, '=');
	    if (chp == NULL)
	      {
		names = &options.module.global;
		chp = optarg;
	      }
	    else
	      {
		chp = chp + 1; /* skip `=' */
		names = NULL;
		if (strncmp (optarg, "global=", chp - optarg) == 0)
		  {
		    names = &options.module.global;
		  }
		if (strncmp (optarg, "engine=", chp - optarg) == 0)
		  {
		    names = &options.module.engine;
		  }
		if (strncmp (optarg, "icache=", chp - optarg) == 0)
		  {
		    names = &options.module.icache;
		  }
		if (strncmp (optarg, "idecode=", chp - optarg) == 0)
		  {
		    names = &options.module.idecode;
		  }
		if (strncmp (optarg, "itable=", chp - optarg) == 0)
		  {
		    names = &options.module.itable;
		  }
		if (strncmp (optarg, "semantics=", chp - optarg) == 0)
		  {
		    names = &options.module.semantics;
		  }
		if (strncmp (optarg, "support=", chp - optarg) == 0)
		  {
		    names = &options.module.support;
		  }
		if (names == NULL)
		  {
		    error (NULL, "Prefix `%s' unreconized\n", optarg);
		  }
	      }
	    switch (ch)
	      {
	      case 'P':
		name = &names->prefix;
		break;
	      case 'S':
		name = &names->suffix;
		break;
	      }
	    name->u = strdup (chp);
	    name->l = strdup (chp);
	    chp = name->u;
	    while (*chp) {
	      if (islower(*chp))
		*chp = toupper(*chp);
	      chp++;
	    }
	    if (name == &options.module.global.prefix)
	      {
		options.module.engine.prefix = options.module.global.prefix;
		options.module.icache.prefix = options.module.global.prefix;
		options.module.idecode.prefix = options.module.global.prefix;
		/* options.module.itable.prefix = options.module.global.prefix; */
		options.module.semantics.prefix = options.module.global.prefix;
		options.module.support.prefix = options.module.global.prefix;
	      }
	    if (name == &options.module.global.suffix)
	      {
		options.module.engine.suffix = options.module.global.suffix;
		options.module.icache.suffix = options.module.global.suffix;
		options.module.idecode.suffix = options.module.global.suffix;
		/* options.module.itable.suffix = options.module.global.suffix; */
		options.module.semantics.suffix = options.module.global.suffix;
		options.module.support.suffix = options.module.global.suffix;
	      }
	    break;
	  }
	
	case 'W':
	  {
	    if (strcmp (optarg, "error") == 0)
	      options.warning = error;
	    else if (strcmp (optarg, "nodiscard") == 0)
	      options.warn.discard = 0;
	    else if (strcmp (optarg, "discard") == 0)
	      options.warn.discard = 1;
	    else if (strcmp (optarg, "nowidth") == 0)
	      options.warn.width = 0;
	    else if (strcmp (optarg, "width") == 0)
	      options.warn.width = 1;
	    else if (strcmp (optarg, "nounimplemented") == 0)
	      options.warn.unimplemented = 0;
	    else if (strcmp (optarg, "unimplemented") == 0)
	      options.warn.unimplemented = 1;
	    else
	      error (NULL, "Unknown -W argument `%s'\n", optarg);
	    break;
	  }


	case 'G':
	  {
	    int enable_p;
	    char *argp;
	    if (strncmp (optarg, "no-", strlen ("no-")) == 0)
	      {
		argp = optarg + strlen ("no-");
		enable_p = 0;
	      }
	    else if (strncmp (optarg, "!", strlen ("!")) == 0)
	      {
		argp = optarg + strlen ("no-");
		enable_p = 0;
	      }
	    else
	      {
		argp = optarg;
		enable_p = 1;
	      }
	    if (strcmp (argp, "decode-duplicate") == 0)
	      {
		options.decode.duplicate = enable_p;
	      }
	    else if (strcmp (argp, "decode-combine") == 0)
	      {
		options.decode.combine = enable_p;
	      }
	    else if (strcmp (argp, "decode-zero-reserved") == 0)
	      {
		options.decode.zero_reserved = enable_p;
	      }
	    
	    else if (strcmp (argp, "gen-conditional-issue") == 0)
	      {
		options.gen.conditional_issue = enable_p;
	      }
	    else if (strcmp (argp, "conditional-issue") == 0)
	      {
		options.gen.conditional_issue = enable_p;
		options.warning (NULL, "Option conditional-issue replaced by gen-conditional-issue\n");
	      }
	    else if (strcmp (argp, "gen-delayed-branch") == 0)
	      {
		options.gen.delayed_branch = enable_p;
	      }
	    else if (strcmp (argp, "delayed-branch") == 0)
	      {
		options.gen.delayed_branch = enable_p;
		options.warning (NULL, "Option delayed-branch replaced by gen-delayed-branch\n");
	      }
	    else if (strcmp (argp, "gen-direct-access") == 0)
	      {
		options.gen.direct_access = enable_p;
	      }
	    else if (strcmp (argp, "direct-access") == 0)
	      {
		options.gen.direct_access = enable_p;
		options.warning (NULL, "Option direct-access replaced by gen-direct-access\n");
	      }
	    else if (strncmp (argp, "gen-zero-r", strlen ("gen-zero-r")) == 0)
	      {
		options.gen.zero_reg = enable_p;
		options.gen.zero_reg_nr = atoi (argp + strlen ("gen-zero-r"));
	      }
	    else if (strncmp (argp, "zero-r", strlen ("zero-r")) == 0)
	      {
		options.gen.zero_reg = enable_p;
		options.gen.zero_reg_nr = atoi (argp + strlen ("zero-r"));
		options.warning (NULL, "Option zero-r<N> replaced by gen-zero-r<N>\n");
	      }
	    else if (strncmp (argp, "gen-icache", strlen ("gen-icache")) == 0)
	      {
		switch (argp[strlen ("gen-icache")])
		  {
		  case '=':
		    options.gen.icache_size = atoi (argp + strlen ("gen-icache") + 1);
		    options.gen.icache = enable_p;
		    break;
		  case '\0':
		    options.gen.icache = enable_p;
		    break;
		  default:
		    error (NULL, "Expecting -Ggen-icache or -Ggen-icache=<N>\n");
		  }
	      }
	    else if (strcmp (argp, "gen-insn-in-icache") == 0)
	      {
		options.gen.insn_in_icache = enable_p;
	      }
	    else if (strncmp (argp, "gen-multi-sim", strlen ("gen-multi-sim")) == 0)
	      {
		char *arg = &argp[strlen ("gen-multi-sim")];
		switch (arg[0])
		  {
		  case '=':
		    options.gen.multi_sim = enable_p;
		    options.gen.default_model = arg + 1;
		    if (! filter_is_member (options.model_filter, options.gen.default_model))
		      error (NULL, "multi-sim model %s unknown\n", options.gen.default_model);
		    break;
		  case '\0':
		    options.gen.multi_sim = enable_p;
		    options.gen.default_model = NULL;
		    break;
		  default:
		    error (NULL, "Expecting -Ggen-multi-sim or -Ggen-multi-sim=<MODEL>\n");
		    break;
		  }
	      }
	    else if (strcmp (argp, "gen-multi-word") == 0)
	      {
		options.gen.multi_word = enable_p;
	      }
	    else if (strcmp (argp, "gen-semantic-icache") == 0)
	      {
		options.gen.semantic_icache = enable_p;
	      }
	    else if (strcmp (argp, "gen-slot-verification") == 0)
	      {
		options.gen.slot_verification = enable_p;
	      }
	    else if (strcmp (argp, "verify-slot") == 0)
	      {
		options.gen.slot_verification = enable_p;
		options.warning (NULL, "Option verify-slot replaced by gen-slot-verification\n");
	      }
	    else if (strcmp (argp, "gen-nia-invalid") == 0)
	      {
		options.gen.nia = nia_is_invalid;
	      }
	    else if (strcmp (argp, "default-nia-minus-one") == 0)
	      {
		options.gen.nia = nia_is_invalid;
		options.warning (NULL, "Option default-nia-minus-one replaced by gen-nia-invalid\n");
	      }
	    else if (strcmp (argp, "gen-nia-void") == 0)
	      {
		options.gen.nia = nia_is_void;
	      }
	    else if (strcmp (argp, "trace-all") == 0)
	      {
		memset (&options.trace, enable_p, sizeof (options.trace));
	      }
	    else if (strcmp (argp, "trace-combine") == 0)
	      {
		options.trace.combine = enable_p;
	      }
	    else if (strcmp (argp, "trace-entries") == 0)
	      {
		options.trace.entries = enable_p;
	      }
	    else if (strcmp (argp, "trace-rule-rejection") == 0)
	      {
		options.trace.rule_rejection = enable_p;
	      }
	    else if (strcmp (argp, "trace-rule-selection") == 0)
	      {
		options.trace.rule_selection = enable_p;
	      }
	    else if (strcmp (argp, "trace-insn-insertion") == 0)
	      {
		options.trace.insn_insertion = enable_p;
	      }
	    else if (strcmp (argp, "trace-insn-expansion") == 0)
	      {
		options.trace.insn_expansion = enable_p;
	      }
	    else if (strcmp (argp, "jumps") == 0)
	      {
		options.gen.code = generate_jumps;
	      }
	    else if (strcmp (argp, "field-widths") == 0)
	      {
		options.insn_specifying_widths = enable_p;
	      }
	    else if (strcmp (argp, "omit-line-numbers") == 0)
	      {
		file_references = lf_omit_references;
	      }
	    else
	      {
		error (NULL, "Unknown option %s\n", optarg);
	      }
	    break;
	  }
	
	case 'i':
	  isa = load_insn_table (optarg, cache_rules);
	  if (isa->illegal_insn == NULL)
	    error (NULL, "illegal-instruction missing from insn table\n");
	  break;

	case 'x':
	  gen = do_gen (isa, decode_rules);
	  break;

	case 'o':
	  decode_rules = load_decode_table (optarg);
	  break;

	case 'k':
	  if (isa != NULL)
	    error (NULL, "Cache file must appear before the insn file\n");
	  cache_rules = load_cache_table (optarg);
	  break;

	case 'n':
	  real_file_name = strdup(optarg);
	  break;

	case 'h':
	  is_header = 1;
	  break;
	  
	case 'c':
	case 'd':
	case 'e':
	case 'f':
	case 'm':
	case 'r':
	case 's':
	case 't':
	  {
	    lf *file = lf_open(optarg, real_file_name, file_references,
			       (is_header ? lf_is_h : lf_is_c),
			       argv[0]);
	    if (gen == NULL && ch != 't' && ch != 'm' && ch != 'f')
	      {
		options.warning (NULL, "Explicitly generate tables with -x option\n");
		gen = do_gen (isa, decode_rules);
	      }
	    lf_print__file_start(file);
	    switch (ch)
	      {
	      case 'm':
		if (is_header)
		  gen_model_h (file, isa);
		else
		  gen_model_c (file, isa);
		break;
	      case 't':
		if (is_header)
		  gen_itable_h (file, isa);
		else
		  gen_itable_c (file, isa);
		break;
	      case 'f':
		if (is_header)
		  gen_support_h (file, isa);
		else
		  gen_support_c (file, isa);
		break;
	      case 'r':
		if (is_header)
		  options.warning (NULL, "-hr option ignored\n");
		else
		  gen_run_c (file, gen);
		break;
	      case 's':
		if(is_header)
		  gen_semantics_h (file, gen->semantics, isa->max_nr_words);
		else
		  gen_semantics_c (file, gen->semantics, isa->caches);
		break;
	      case 'd':
		if (is_header)
		  gen_idecode_h (file, gen, isa, cache_rules);
		else
		  gen_idecode_c (file, gen, isa, cache_rules);
		break;
	      case 'e':
		if (is_header)
		  gen_engine_h (file, gen, isa, cache_rules);
		else
		  gen_engine_c (file, gen, isa, cache_rules);
		break;
	      case 'c':
		if (is_header)
		  gen_icache_h (file,
				gen->semantics,
				isa->functions,
				isa->max_nr_words);
		else
		  gen_icache_c (file,
				gen->semantics,
				isa->functions,
				cache_rules);
		break;
	      }
	    lf_print__file_finish(file);
	    lf_close(file);
	    is_header = 0;
	  }
	real_file_name = NULL;
	break;
	default:
	  ERROR ("Bad switch");
	}
    }
  return (0);
}