| 1 | /* The IGEN simulator generator for GDB, the GNU Debugger. |
| 2 | |
| 3 | Copyright 2002-2019 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Andrew Cagney. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program 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 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | |
| 23 | #include "misc.h" |
| 24 | #include "lf.h" |
| 25 | #include "table.h" |
| 26 | #include "filter.h" |
| 27 | |
| 28 | #include "igen.h" |
| 29 | |
| 30 | #include "ld-insn.h" |
| 31 | #include "ld-decode.h" |
| 32 | |
| 33 | #include "gen.h" |
| 34 | |
| 35 | #include "gen-semantics.h" |
| 36 | #include "gen-support.h" |
| 37 | |
| 38 | static void |
| 39 | print_support_function_name (lf *file, |
| 40 | function_entry * function, |
| 41 | int is_function_definition) |
| 42 | { |
| 43 | if (function->is_internal) |
| 44 | { |
| 45 | lf_print__function_type_function (file, print_semantic_function_type, |
| 46 | "INLINE_SUPPORT", |
| 47 | (is_function_definition ? "\n" : |
| 48 | " ")); |
| 49 | print_function_name (file, function->name, NULL, NULL, NULL, |
| 50 | function_name_prefix_semantics); |
| 51 | lf_printf (file, "\n("); |
| 52 | lf_indent (file, +1); |
| 53 | print_semantic_function_formal (file, 0); |
| 54 | lf_indent (file, -1); |
| 55 | lf_printf (file, ")"); |
| 56 | if (!is_function_definition) |
| 57 | lf_printf (file, ";"); |
| 58 | lf_printf (file, "\n"); |
| 59 | } |
| 60 | else |
| 61 | { |
| 62 | /* map the name onto a globally valid name */ |
| 63 | if (!is_function_definition |
| 64 | && strcmp (options.module.support.prefix.l, "") != 0) |
| 65 | { |
| 66 | lf_indent_suppress (file); |
| 67 | lf_printf (file, "#define %s %s%s\n", |
| 68 | function->name, |
| 69 | options.module.support.prefix.l, function->name); |
| 70 | } |
| 71 | lf_print__function_type (file, |
| 72 | function->type, |
| 73 | "INLINE_SUPPORT", |
| 74 | (is_function_definition ? "\n" : " ")); |
| 75 | lf_printf (file, "%s%s\n(", |
| 76 | options.module.support.prefix.l, function->name); |
| 77 | if (options.gen.smp) |
| 78 | lf_printf (file, |
| 79 | "sim_cpu *cpu, %sinstruction_address cia, int MY_INDEX", |
| 80 | options.module.support.prefix.l); |
| 81 | else |
| 82 | lf_printf (file, |
| 83 | "SIM_DESC sd, %sinstruction_address cia, int MY_INDEX", |
| 84 | options.module.support.prefix.l); |
| 85 | if (function->param != NULL && strlen (function->param) > 0) |
| 86 | lf_printf (file, ", %s", function->param); |
| 87 | lf_printf (file, ")%s", (is_function_definition ? "\n" : ";\n")); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | |
| 92 | static void |
| 93 | support_h_function (lf *file, function_entry * function, void *data) |
| 94 | { |
| 95 | ASSERT (function->type != NULL); |
| 96 | print_support_function_name (file, function, 0 /*!is_definition */ ); |
| 97 | lf_printf (file, "\n"); |
| 98 | } |
| 99 | |
| 100 | |
| 101 | extern void |
| 102 | gen_support_h (lf *file, insn_table *table) |
| 103 | { |
| 104 | /* output the definition of `SD_' */ |
| 105 | if (options.gen.smp) |
| 106 | { |
| 107 | lf_printf (file, "#define SD CPU_STATE (cpu)\n"); |
| 108 | lf_printf (file, "#define CPU cpu\n"); |
| 109 | lf_printf (file, "#define CPU_ cpu\n"); |
| 110 | } |
| 111 | else |
| 112 | { |
| 113 | lf_printf (file, "#define SD sd\n"); |
| 114 | lf_printf (file, "#define CPU (STATE_CPU (sd, 0))\n"); |
| 115 | lf_printf (file, "#define CPU_ sd\n"); |
| 116 | } |
| 117 | |
| 118 | lf_printf (file, "#define CIA_ cia\n"); |
| 119 | if (options.gen.delayed_branch) |
| 120 | { |
| 121 | lf_printf (file, "#define CIA cia.ip\n"); |
| 122 | lf_printf (file, |
| 123 | "/* #define NIA nia.dp -- do not define, ambigious */\n"); |
| 124 | } |
| 125 | else |
| 126 | { |
| 127 | lf_printf (file, "#define CIA cia\n"); |
| 128 | lf_printf (file, "#define NIA nia\n"); |
| 129 | } |
| 130 | lf_printf (file, "\n"); |
| 131 | |
| 132 | lf_printf (file, "#define SD_ CPU_, CIA_, MY_INDEX\n"); |
| 133 | lf_printf (file, "#define _SD SD_ /* deprecated */\n"); |
| 134 | lf_printf (file, "\n"); |
| 135 | |
| 136 | /* Map <PREFIX>_xxxx onto the shorter xxxx for the following names: |
| 137 | |
| 138 | instruction_word |
| 139 | idecode_issue |
| 140 | semantic_illegal |
| 141 | |
| 142 | Map defined here as name space problems are created when the name is |
| 143 | defined in idecode.h */ |
| 144 | if (strcmp (options.module.idecode.prefix.l, "") != 0) |
| 145 | { |
| 146 | lf_indent_suppress (file); |
| 147 | lf_printf (file, "#define %s %s%s\n", |
| 148 | "instruction_word", |
| 149 | options.module.idecode.prefix.l, "instruction_word"); |
| 150 | lf_printf (file, "\n"); |
| 151 | lf_indent_suppress (file); |
| 152 | lf_printf (file, "#define %s %s%s\n", |
| 153 | "idecode_issue", |
| 154 | options.module.idecode.prefix.l, "idecode_issue"); |
| 155 | lf_printf (file, "\n"); |
| 156 | lf_indent_suppress (file); |
| 157 | lf_printf (file, "#define %s %s%s\n", |
| 158 | "semantic_illegal", |
| 159 | options.module.idecode.prefix.l, "semantic_illegal"); |
| 160 | lf_printf (file, "\n"); |
| 161 | } |
| 162 | |
| 163 | /* output a declaration for all functions */ |
| 164 | function_entry_traverse (file, table->functions, support_h_function, NULL); |
| 165 | lf_printf (file, "\n"); |
| 166 | lf_printf (file, "#if defined(SUPPORT_INLINE)\n"); |
| 167 | lf_printf (file, "# if ((SUPPORT_INLINE & INCLUDE_MODULE)\\\n"); |
| 168 | lf_printf (file, " && (SUPPORT_INLINE & INCLUDED_BY_MODULE))\n"); |
| 169 | lf_printf (file, "# include \"%ssupport.c\"\n", |
| 170 | options.module.support.prefix.l); |
| 171 | lf_printf (file, "# endif\n"); |
| 172 | lf_printf (file, "#endif\n"); |
| 173 | } |
| 174 | |
| 175 | static void |
| 176 | support_c_function (lf *file, function_entry * function, void *data) |
| 177 | { |
| 178 | ASSERT (function->type != NULL); |
| 179 | print_support_function_name (file, function, 1 /*!is_definition */ ); |
| 180 | lf_printf (file, "{\n"); |
| 181 | lf_indent (file, +2); |
| 182 | if (function->code == NULL) |
| 183 | error (function->line, "Function without body (or null statement)"); |
| 184 | lf_print__line_ref (file, function->code->line); |
| 185 | table_print_code (file, function->code); |
| 186 | if (function->is_internal) |
| 187 | { |
| 188 | lf_printf (file, |
| 189 | "sim_engine_abort (SD, CPU, cia, \"Internal function must longjump\\n\");\n"); |
| 190 | lf_printf (file, "return cia;\n"); |
| 191 | } |
| 192 | lf_indent (file, -2); |
| 193 | lf_printf (file, "}\n"); |
| 194 | lf_print__internal_ref (file); |
| 195 | lf_printf (file, "\n"); |
| 196 | } |
| 197 | |
| 198 | |
| 199 | void |
| 200 | gen_support_c (lf *file, insn_table *table) |
| 201 | { |
| 202 | lf_printf (file, "#include \"sim-main.h\"\n"); |
| 203 | lf_printf (file, "#include \"%sidecode.h\"\n", |
| 204 | options.module.idecode.prefix.l); |
| 205 | lf_printf (file, "#include \"%sitable.h\"\n", |
| 206 | options.module.itable.prefix.l); |
| 207 | lf_printf (file, "#include \"%ssupport.h\"\n", |
| 208 | options.module.support.prefix.l); |
| 209 | lf_printf (file, "\n"); |
| 210 | |
| 211 | /* output a definition (c-code) for all functions */ |
| 212 | function_entry_traverse (file, table->functions, support_c_function, NULL); |
| 213 | } |