| 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 | typedef struct _opcode_field opcode_field; |
| 24 | struct _opcode_field |
| 25 | { |
| 26 | int word_nr; |
| 27 | int first; |
| 28 | int last; |
| 29 | int is_boolean; |
| 30 | int nr_opcodes; |
| 31 | unsigned boolean_constant; |
| 32 | opcode_field *parent; |
| 33 | }; |
| 34 | |
| 35 | typedef struct _opcode_bits opcode_bits; |
| 36 | struct _opcode_bits |
| 37 | { |
| 38 | int value; |
| 39 | int first; |
| 40 | int last; |
| 41 | insn_field_entry *field; |
| 42 | opcode_field *opcode; |
| 43 | opcode_bits *next; |
| 44 | }; |
| 45 | |
| 46 | typedef struct _insn_opcodes insn_opcodes; |
| 47 | struct _insn_opcodes |
| 48 | { |
| 49 | opcode_field *opcode; |
| 50 | insn_opcodes *next; |
| 51 | }; |
| 52 | |
| 53 | typedef struct _insn_list insn_list; |
| 54 | struct _insn_list |
| 55 | { |
| 56 | /* the instruction */ |
| 57 | insn_entry *insn; |
| 58 | /* list of non constant bits that have been made constant */ |
| 59 | opcode_bits *expanded_bits; |
| 60 | /* list of the various opcode field paths used to reach this |
| 61 | instruction */ |
| 62 | insn_opcodes *opcodes; |
| 63 | /* number of prefetched words for this instruction */ |
| 64 | int nr_prefetched_words; |
| 65 | /* The semantic function list_entry corresponding to this insn */ |
| 66 | insn_list *semantic; |
| 67 | /* linked list */ |
| 68 | insn_list *next; |
| 69 | }; |
| 70 | |
| 71 | /* forward */ |
| 72 | typedef struct _gen_list gen_list; |
| 73 | |
| 74 | typedef struct _gen_entry gen_entry; |
| 75 | struct _gen_entry |
| 76 | { |
| 77 | |
| 78 | /* as an entry in a table */ |
| 79 | int word_nr; |
| 80 | int opcode_nr; |
| 81 | gen_entry *sibling; |
| 82 | opcode_bits *expanded_bits; |
| 83 | gen_entry *parent; /* parent has the opcode* data */ |
| 84 | |
| 85 | /* as a table containing entries */ |
| 86 | decode_table *opcode_rule; |
| 87 | opcode_field *opcode; |
| 88 | int nr_prefetched_words; |
| 89 | int nr_entries; |
| 90 | gen_entry *entries; |
| 91 | |
| 92 | /* as both an entry and a table */ |
| 93 | int nr_insns; |
| 94 | insn_list *insns; |
| 95 | |
| 96 | /* if siblings are being combined */ |
| 97 | gen_entry *combined_next; |
| 98 | gen_entry *combined_parent; |
| 99 | |
| 100 | /* our top-of-tree */ |
| 101 | gen_list *top; |
| 102 | }; |
| 103 | |
| 104 | |
| 105 | struct _gen_list |
| 106 | { |
| 107 | model_entry *model; |
| 108 | insn_table *isa; |
| 109 | gen_entry *table; |
| 110 | gen_list *next; |
| 111 | }; |
| 112 | |
| 113 | |
| 114 | typedef struct _gen_table gen_table; |
| 115 | struct _gen_table |
| 116 | { |
| 117 | /* list of all the instructions */ |
| 118 | insn_table *isa; |
| 119 | /* list of all the semantic functions */ |
| 120 | decode_table *rules; |
| 121 | /* list of all the generated instruction tables */ |
| 122 | gen_list *tables; |
| 123 | /* list of all the semantic functions */ |
| 124 | int nr_semantics; |
| 125 | insn_list *semantics; |
| 126 | }; |
| 127 | |
| 128 | |
| 129 | extern gen_table *make_gen_tables (insn_table *isa, decode_table *rules); |
| 130 | |
| 131 | |
| 132 | extern void gen_tables_expand_insns (gen_table *gen); |
| 133 | |
| 134 | extern void gen_tables_expand_semantics (gen_table *gen); |
| 135 | |
| 136 | extern int gen_entry_depth (gen_entry *table); |
| 137 | |
| 138 | |
| 139 | |
| 140 | /* Traverse the created data structure */ |
| 141 | |
| 142 | typedef void gen_entry_handler |
| 143 | (lf *file, gen_entry *entry, int depth, void *data); |
| 144 | |
| 145 | extern void gen_entry_traverse_tree |
| 146 | (lf *file, |
| 147 | gen_entry *table, |
| 148 | int depth, |
| 149 | gen_entry_handler * start, |
| 150 | gen_entry_handler * leaf, gen_entry_handler * end, void *data); |
| 151 | |
| 152 | |
| 153 | |
| 154 | /* Misc functions - actually in igen.c */ |
| 155 | |
| 156 | |
| 157 | /* Cache functions: */ |
| 158 | |
| 159 | extern int print_icache_function_formal (lf *file, int nr_prefetched_words); |
| 160 | |
| 161 | extern int print_icache_function_actual (lf *file, int nr_prefetched_words); |
| 162 | |
| 163 | extern int print_icache_function_type (lf *file); |
| 164 | |
| 165 | extern int print_semantic_function_formal (lf *file, int nr_prefetched_words); |
| 166 | |
| 167 | extern int print_semantic_function_actual (lf *file, int nr_prefetched_words); |
| 168 | |
| 169 | extern int print_semantic_function_type (lf *file); |
| 170 | |
| 171 | extern int print_idecode_function_formal (lf *file, int nr_prefetched_words); |
| 172 | |
| 173 | extern int print_idecode_function_actual (lf *file, int nr_prefetched_words); |
| 174 | |
| 175 | typedef enum |
| 176 | { |
| 177 | function_name_prefix_semantics, |
| 178 | function_name_prefix_idecode, |
| 179 | function_name_prefix_itable, |
| 180 | function_name_prefix_icache, |
| 181 | function_name_prefix_engine, |
| 182 | function_name_prefix_none |
| 183 | } |
| 184 | lf_function_name_prefixes; |
| 185 | |
| 186 | typedef enum |
| 187 | { |
| 188 | is_function_declaration = 0, |
| 189 | is_function_definition = 1, |
| 190 | is_function_variable, |
| 191 | } |
| 192 | function_decl_type; |
| 193 | |
| 194 | extern int print_function_name |
| 195 | (lf *file, |
| 196 | const char *basename, |
| 197 | const char *format_name, |
| 198 | const char *model_name, |
| 199 | opcode_bits *expanded_bits, lf_function_name_prefixes prefix); |
| 200 | |
| 201 | extern void print_my_defines |
| 202 | (lf *file, |
| 203 | const char *basename, const char *format_name, opcode_bits *expanded_bits); |
| 204 | |
| 205 | extern void print_itrace (lf *file, insn_entry * insn, int idecode); |
| 206 | |
| 207 | extern void print_sim_engine_abort (lf *file, const char *message); |
| 208 | |
| 209 | |
| 210 | extern void print_include (lf *file, igen_module module); |
| 211 | extern void print_include_inline (lf *file, igen_module module); |
| 212 | extern void print_includes (lf *file); |