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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 */
const 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
{
const model_entry *model;
const insn_table *isa;
gen_entry *table;
gen_list *next;
};
typedef struct _gen_table gen_table;
struct _gen_table
{
/* list of all the instructions */
const insn_table *isa;
/* list of all the semantic functions */
const 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
(const insn_table *isa, const 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 (const gen_entry *table);
/* Traverse the created data structure */
typedef void gen_entry_handler
(lf *file, const gen_entry *entry, int depth, void *data);
extern void gen_entry_traverse_tree
(lf *file,
const 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,
const opcode_bits *expanded_bits,
lf_function_name_prefixes prefix);
extern void print_my_defines
(lf *file,
const char *basename,
const char *format_name,
const opcode_bits *expanded_bits);
extern void print_itrace (lf *file, const 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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