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- /* The IGEN simulator generator for GDB, the GNU Debugger.
- Copyright 2002-2022 Free Software Foundation, Inc.
- Contributed by Andrew Cagney.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- typedef struct _opcode_field opcode_field;
- struct _opcode_field
- {
- int word_nr;
- int first;
- int last;
- int is_boolean;
- int nr_opcodes;
- unsigned boolean_constant;
- opcode_field *parent;
- };
- typedef struct _opcode_bits opcode_bits;
- struct _opcode_bits
- {
- int value;
- int first;
- int last;
- insn_field_entry *field;
- opcode_field *opcode;
- opcode_bits *next;
- };
- typedef struct _insn_opcodes insn_opcodes;
- struct _insn_opcodes
- {
- opcode_field *opcode;
- insn_opcodes *next;
- };
- typedef struct _insn_list insn_list;
- struct _insn_list
- {
- /* the instruction */
- insn_entry *insn;
- /* list of non constant bits that have been made constant */
- opcode_bits *expanded_bits;
- /* list of the various opcode field paths used to reach this
- instruction */
- insn_opcodes *opcodes;
- /* number of prefetched words for this instruction */
- int nr_prefetched_words;
- /* The semantic function list_entry corresponding to this insn */
- insn_list *semantic;
- /* linked list */
- insn_list *next;
- };
- /* forward */
- typedef struct _gen_list gen_list;
- typedef struct _gen_entry gen_entry;
- struct _gen_entry
- {
- /* as an entry in a table */
- int word_nr;
- int opcode_nr;
- gen_entry *sibling;
- opcode_bits *expanded_bits;
- gen_entry *parent; /* parent has the opcode* data */
- /* as a table containing entries */
- decode_table *opcode_rule;
- opcode_field *opcode;
- int nr_prefetched_words;
- int nr_entries;
- gen_entry *entries;
- /* as both an entry and a table */
- int nr_insns;
- insn_list *insns;
- /* if siblings are being combined */
- gen_entry *combined_next;
- gen_entry *combined_parent;
- /* our top-of-tree */
- gen_list *top;
- };
- struct _gen_list
- {
- model_entry *model;
- insn_table *isa;
- gen_entry *table;
- gen_list *next;
- };
- typedef struct _gen_table gen_table;
- struct _gen_table
- {
- /* list of all the instructions */
- insn_table *isa;
- /* list of all the semantic functions */
- decode_table *rules;
- /* list of all the generated instruction tables */
- gen_list *tables;
- /* list of all the semantic functions */
- int nr_semantics;
- insn_list *semantics;
- };
- extern gen_table *make_gen_tables (insn_table *isa, decode_table *rules);
- extern void gen_tables_expand_insns (gen_table *gen);
- extern void gen_tables_expand_semantics (gen_table *gen);
- extern int gen_entry_depth (gen_entry *table);
- /* Traverse the created data structure */
- typedef void gen_entry_handler
- (lf *file, gen_entry *entry, int depth, void *data);
- extern void gen_entry_traverse_tree
- (lf *file,
- gen_entry *table,
- int depth,
- gen_entry_handler * start,
- gen_entry_handler * leaf, gen_entry_handler * end, void *data);
- /* Misc functions - actually in igen.c */
- /* Cache functions: */
- extern int print_icache_function_formal (lf *file, int nr_prefetched_words);
- extern int print_icache_function_actual (lf *file, int nr_prefetched_words);
- extern int print_icache_function_type (lf *file);
- extern int print_semantic_function_formal (lf *file, int nr_prefetched_words);
- extern int print_semantic_function_actual (lf *file, int nr_prefetched_words);
- extern int print_semantic_function_type (lf *file);
- extern int print_idecode_function_formal (lf *file, int nr_prefetched_words);
- extern int print_idecode_function_actual (lf *file, int nr_prefetched_words);
- typedef enum
- {
- function_name_prefix_semantics,
- function_name_prefix_idecode,
- function_name_prefix_itable,
- function_name_prefix_icache,
- function_name_prefix_engine,
- function_name_prefix_none
- }
- lf_function_name_prefixes;
- typedef enum
- {
- is_function_declaration = 0,
- is_function_definition = 1,
- is_function_variable,
- }
- function_decl_type;
- extern int print_function_name
- (lf *file,
- const char *basename,
- const char *format_name,
- const char *model_name,
- opcode_bits *expanded_bits, lf_function_name_prefixes prefix);
- extern void print_my_defines
- (lf *file,
- const char *basename, const char *format_name, opcode_bits *expanded_bits);
- extern void print_itrace (lf *file, insn_entry * insn, int idecode);
- extern void print_sim_engine_abort (lf *file, const char *message);
- extern void print_include (lf *file, igen_module module);
- extern void print_include_inline (lf *file, igen_module module);
- extern void print_includes (lf *file);
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