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>_instruction_word and <PREFIX>_idecode_issue onto the
 145      shorter instruction_word and idecode_issue.  Map defined here as,
 146      name space problems are created when the name is defined in
 147      idecode.h */
 148   if (strcmp (options.module.idecode.prefix.l, "") != 0)
 149     {
 150       lf_indent_suppress (file);
 151       lf_printf (file, "#define %s %s%s\n",
 152                  "instruction_word",
 153                  options.module.idecode.prefix.l,
 154                  "instruction_word");
 155       lf_printf (file, "\n");
 156       lf_indent_suppress (file);
 157       lf_printf (file, "#define %s %s%s\n",
 158                  "idecode_issue",
 159                  options.module.idecode.prefix.l,
 160                  "idecode_issue");
 161       lf_printf (file, "\n");
 162     }
 163
 164   /* output a declaration for all functions */
 165   function_entry_traverse (file, table->functions,
 166                            support_h_function,
 167                            NULL);
 168   lf_printf(file, "\n");
 169   lf_printf(file, "#if defined(SUPPORT_INLINE)\n");
 170   lf_printf(file, "# if ((SUPPORT_INLINE & INCLUDE_MODULE)\\\n");
 171   lf_printf(file, "      && (SUPPORT_INLINE & INCLUDED_BY_MODULE))\n");
 172   lf_printf(file, "#  include \"%ssupport.c\"\n", options.module.support.prefix.l);
 173   lf_printf(file, "# endif\n");
 174   lf_printf(file, "#endif\n");
 175 }
 176
 177 static void
 178 support_c_function (lf *file,
 179                     function_entry *function,
 180                     void *data)
 181 {
 182   ASSERT (function->type != NULL);
 183   print_support_function_name (file,
 184                                function,
 185                                1/*!is_definition*/);
 186   lf_printf (file, "{\n");
 187   lf_indent (file, +2);
 188   if (function->code == NULL)
 189     error (function->line,
 190            "Function without body (or null statement)");
 191   lf_print__line_ref (file, function->code->line);
 192   table_print_code (file, function->code);
 193   if (function->is_internal)
 194     {
 195       lf_printf (file, "sim_engine_abort (SD, CPU, cia, \"Internal function must longjump\\n\");\n");
 196       lf_printf (file, "return cia;\n");
 197     }
 198   lf_indent (file, -2);
 199   lf_printf (file, "}\n");
 200   lf_print__internal_ref (file);
 201   lf_printf (file, "\n");
 202 }
 203
 204
 205 void
 206 gen_support_c (lf *file,
 207                insn_table *table)
 208 {
 209   lf_printf(file, "#include \"sim-main.h\"\n");
 210   lf_printf(file, "#include \"%sidecode.h\"\n", options.module.idecode.prefix.l);
 211   lf_printf(file, "#include \"%sitable.h\"\n", options.module.itable.prefix.l);
 212   lf_printf(file, "#include \"%ssupport.h\"\n", options.module.support.prefix.l);
 213   lf_printf(file, "\n");
 214
 215   /* output a definition (c-code) for all functions */
 216   function_entry_traverse (file, table->functions,
 217                            support_c_function,
 218                            NULL);
 219 }