sim/igen/gen-support.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21 #include "misc.h"
  22 #include "lf.h"
  23 #include "table.h"
  24 #include "filter.h"
  25
  26 #include "igen.h"
  27
  28 #include "ld-insn.h"
  29 #include "ld-decode.h"
  30
  31 #include "gen.h"
  32
  33 #include "gen-semantics.h"
  34 #include "gen-support.h"
  35
  36 static void
  37 print_support_function_name (lf *file,
  38                              function_entry *function,
  39                              int is_function_definition)
  40 {
  41   if (function->is_internal)
  42     {
  43       lf_print__function_type_function (file, print_semantic_function_type,
  44                                         "INLINE_SUPPORT",
  45                                         (is_function_definition ? "\n" : " "));
  46       print_function_name (file,
  47                            function->name,
  48                            NULL,
  49                            NULL,
  50                            NULL,
  51                            function_name_prefix_semantics);
  52       lf_printf (file, "\n(");
  53       lf_indent (file, +1);
  54       print_semantic_function_formal (file, 0);
  55       lf_indent (file, -1);
  56       lf_printf (file, ")");
  57       if (!is_function_definition)
  58         lf_printf (file, ";");
  59       lf_printf (file, "\n");
  60     }
  61   else
  62     {
  63       /* map the name onto a globally valid name */
  64       if (!is_function_definition
  65           && strcmp (options.module.support.prefix.l, "") != 0)
  66         {
  67           lf_indent_suppress (file);
  68           lf_printf (file, "#define %s %s%s\n",
  69                      function->name,
  70                      options.module.support.prefix.l,
  71                      function->name);
  72         }
  73       lf_print__function_type (file,
  74                                function->type,
  75                                "INLINE_SUPPORT",
  76                                (is_function_definition ? "\n" : " "));
  77       lf_printf (file, "%s%s\n(",
  78                  options.module.support.prefix.l,
  79                  function->name);
  80       if (options.gen.smp)
  81         lf_printf (file,
  82                    "sim_cpu *cpu, %sinstruction_address cia, int MY_INDEX",
  83                    options.module.support.prefix.l);
  84       else
  85         lf_printf (file,
  86                    "SIM_DESC sd, %sinstruction_address cia, int MY_INDEX",
  87                    options.module.support.prefix.l);
  88       if (function->param != NULL
  89           && strlen (function->param) > 0)
  90         lf_printf (file, ", %s", function->param);
  91       lf_printf (file, ")%s", (is_function_definition ? "\n" : ";\n"));
  92     }
  93 }
  94
  95
  96 static void
  97 support_h_function (lf *file,
  98                     function_entry *function,
  99                     void *data)
 100 {
 101   ASSERT (function->type != NULL);
 102   print_support_function_name (file,
 103                                function,
 104                                0/*!is_definition*/);
 105   lf_printf(file, "\n");
 106 }
 107
 108
 109 extern void
 110 gen_support_h (lf *file,
 111                insn_table *table)
 112 {
 113   /* output the definition of `SD_'*/
 114   if (options.gen.smp)
 115     {
 116       lf_printf(file, "#define SD CPU_STATE (cpu)\n");
 117       lf_printf(file, "#define CPU cpu\n");
 118       lf_printf(file, "#define CPU_ cpu\n");
 119     }
 120   else
 121     {
 122       lf_printf(file, "#define SD sd\n");
 123       lf_printf(file, "#define CPU (STATE_CPU (sd, 0))\n");
 124       lf_printf(file, "#define CPU_ sd\n");
 125     }
 126
 127   lf_printf(file, "#define CIA_ cia\n");
 128   if (options.gen.delayed_branch)
 129     {
 130       lf_printf(file, "#define CIA cia.ip\n");
 131       lf_printf(file, "/* #define NIA nia.dp -- do not define, ambigious */\n");
 132     }
 133   else
 134     {
 135       lf_printf(file, "#define CIA cia\n");
 136       lf_printf(file, "#define NIA nia\n");
 137     }
 138   lf_printf(file, "\n");
 139
 140   lf_printf(file, "#define SD_ CPU_, CIA_, MY_INDEX\n");
 141   lf_printf(file, "#define _SD SD_ /* deprecated */\n");
 142   lf_printf(file, "\n");
 143
 144   /* Map <PREFIX>_xxxx onto the shorter xxxx for the following names:
 145
 146        instruction_word
 147        idecode_issue
 148        semantic_illegal
 149
 150      Map defined here as name space problems are created when the name is
 151      defined in idecode.h  */
 152   if (strcmp (options.module.idecode.prefix.l, "") != 0)
 153     {
 154       lf_indent_suppress (file);
 155       lf_printf (file, "#define %s %s%s\n",
 156                  "instruction_word",
 157                  options.module.idecode.prefix.l,
 158                  "instruction_word");
 159       lf_printf (file, "\n");
 160       lf_indent_suppress (file);
 161       lf_printf (file, "#define %s %s%s\n",
 162                  "idecode_issue",
 163                  options.module.idecode.prefix.l,
 164                  "idecode_issue");
 165       lf_printf (file, "\n");
 166       lf_indent_suppress (file);
 167       lf_printf (file, "#define %s %s%s\n",
 168                  "semantic_illegal",
 169                  options.module.idecode.prefix.l,
 170                  "semantic_illegal");
 171       lf_printf (file, "\n");
 172     }
 173
 174   /* output a declaration for all functions */
 175   function_entry_traverse (file, table->functions,
 176                            support_h_function,
 177                            NULL);
 178   lf_printf(file, "\n");
 179   lf_printf(file, "#if defined(SUPPORT_INLINE)\n");
 180   lf_printf(file, "# if ((SUPPORT_INLINE & INCLUDE_MODULE)\\\n");
 181   lf_printf(file, "      && (SUPPORT_INLINE & INCLUDED_BY_MODULE))\n");
 182   lf_printf(file, "#  include \"%ssupport.c\"\n", options.module.support.prefix.l);
 183   lf_printf(file, "# endif\n");
 184   lf_printf(file, "#endif\n");
 185 }
 186
 187 static void
 188 support_c_function (lf *file,
 189                     function_entry *function,
 190                     void *data)
 191 {
 192   ASSERT (function->type != NULL);
 193   print_support_function_name (file,
 194                                function,
 195                                1/*!is_definition*/);
 196   lf_printf (file, "{\n");
 197   lf_indent (file, +2);
 198   if (function->code == NULL)
 199     error (function->line,
 200            "Function without body (or null statement)");
 201   lf_print__line_ref (file, function->code->line);
 202   table_print_code (file, function->code);
 203   if (function->is_internal)
 204     {
 205       lf_printf (file, "sim_engine_abort (SD, CPU, cia, \"Internal function must longjump\\n\");\n");
 206       lf_printf (file, "return cia;\n");
 207     }
 208   lf_indent (file, -2);
 209   lf_printf (file, "}\n");
 210   lf_print__internal_ref (file);
 211   lf_printf (file, "\n");
 212 }
 213
 214
 215 void
 216 gen_support_c (lf *file,
 217                insn_table *table)
 218 {
 219   lf_printf(file, "#include \"sim-main.h\"\n");
 220   lf_printf(file, "#include \"%sidecode.h\"\n", options.module.idecode.prefix.l);
 221   lf_printf(file, "#include \"%sitable.h\"\n", options.module.itable.prefix.l);
 222   lf_printf(file, "#include \"%ssupport.h\"\n", options.module.support.prefix.l);
 223   lf_printf(file, "\n");
 224
 225   /* output a definition (c-code) for all functions */
 226   function_entry_traverse (file, table->functions,
 227                            support_c_function,
 228                            NULL);
 229 }