212 lines
5 KiB
C
212 lines
5 KiB
C
/* The IGEN simulator generator for GDB, the GNU Debugger.
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Copyright 2002, 2007, 2008 Free Software Foundation, Inc.
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Contributed by Andrew Cagney.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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typedef struct _opcode_field opcode_field;
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struct _opcode_field
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{
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int word_nr;
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int first;
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int last;
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int is_boolean;
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int nr_opcodes;
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unsigned boolean_constant;
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opcode_field *parent;
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};
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typedef struct _opcode_bits opcode_bits;
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struct _opcode_bits
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{
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int value;
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int first;
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int last;
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insn_field_entry *field;
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opcode_field *opcode;
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opcode_bits *next;
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};
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typedef struct _insn_opcodes insn_opcodes;
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struct _insn_opcodes
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{
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opcode_field *opcode;
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insn_opcodes *next;
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};
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typedef struct _insn_list insn_list;
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struct _insn_list
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{
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/* the instruction */
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insn_entry *insn;
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/* list of non constant bits that have been made constant */
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opcode_bits *expanded_bits;
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/* list of the various opcode field paths used to reach this
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instruction */
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insn_opcodes *opcodes;
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/* number of prefetched words for this instruction */
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int nr_prefetched_words;
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/* The semantic function list_entry corresponding to this insn */
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insn_list *semantic;
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/* linked list */
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insn_list *next;
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};
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/* forward */
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typedef struct _gen_list gen_list;
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typedef struct _gen_entry gen_entry;
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struct _gen_entry
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{
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/* as an entry in a table */
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int word_nr;
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int opcode_nr;
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gen_entry *sibling;
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opcode_bits *expanded_bits;
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gen_entry *parent; /* parent has the opcode* data */
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/* as a table containing entries */
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decode_table *opcode_rule;
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opcode_field *opcode;
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int nr_prefetched_words;
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int nr_entries;
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gen_entry *entries;
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/* as both an entry and a table */
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int nr_insns;
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insn_list *insns;
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/* if siblings are being combined */
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gen_entry *combined_next;
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gen_entry *combined_parent;
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/* our top-of-tree */
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gen_list *top;
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};
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struct _gen_list
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{
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model_entry *model;
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insn_table *isa;
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gen_entry *table;
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gen_list *next;
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};
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typedef struct _gen_table gen_table;
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struct _gen_table
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{
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/* list of all the instructions */
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insn_table *isa;
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/* list of all the semantic functions */
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decode_table *rules;
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/* list of all the generated instruction tables */
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gen_list *tables;
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/* list of all the semantic functions */
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int nr_semantics;
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insn_list *semantics;
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};
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extern gen_table *make_gen_tables (insn_table *isa, decode_table *rules);
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extern void gen_tables_expand_insns (gen_table *gen);
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extern void gen_tables_expand_semantics (gen_table *gen);
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extern int gen_entry_depth (gen_entry *table);
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/* Traverse the created data structure */
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typedef void gen_entry_handler
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(lf *file, gen_entry *entry, int depth, void *data);
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extern void gen_entry_traverse_tree
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(lf *file,
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gen_entry *table,
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int depth,
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gen_entry_handler * start,
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gen_entry_handler * leaf, gen_entry_handler * end, void *data);
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/* Misc functions - actually in igen.c */
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/* Cache functions: */
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extern int print_icache_function_formal (lf *file, int nr_prefetched_words);
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extern int print_icache_function_actual (lf *file, int nr_prefetched_words);
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extern int print_icache_function_type (lf *file);
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extern int print_semantic_function_formal (lf *file, int nr_prefetched_words);
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extern int print_semantic_function_actual (lf *file, int nr_prefetched_words);
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extern int print_semantic_function_type (lf *file);
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extern int print_idecode_function_formal (lf *file, int nr_prefetched_words);
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extern int print_idecode_function_actual (lf *file, int nr_prefetched_words);
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typedef enum
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{
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function_name_prefix_semantics,
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function_name_prefix_idecode,
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function_name_prefix_itable,
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function_name_prefix_icache,
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function_name_prefix_engine,
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function_name_prefix_none
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}
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lf_function_name_prefixes;
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typedef enum
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{
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is_function_declaration = 0,
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is_function_definition = 1,
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is_function_variable,
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}
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function_decl_type;
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extern int print_function_name
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(lf *file,
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const char *basename,
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const char *format_name,
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const char *model_name,
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opcode_bits *expanded_bits, lf_function_name_prefixes prefix);
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extern void print_my_defines
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(lf *file,
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const char *basename, const char *format_name, opcode_bits *expanded_bits);
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extern void print_itrace (lf *file, insn_entry * insn, int idecode);
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extern void print_sim_engine_abort (lf *file, const char *message);
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extern void print_include (lf *file, igen_module module);
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extern void print_include_inline (lf *file, igen_module module);
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extern void print_includes (lf *file);
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