Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 227 insertions, 0 deletions

diff --git a/sim/igen/gen.h b/sim/igen/gen.h
new file mode 100644
index 0000000..884e277
--- /dev/null
+++ b/sim/igen/gen.h
@@ -0,0 +1,227 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994,1995,1996, Andrew Cagney <cagney@highland.com.au>
+
+    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 2 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, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ 
+    */
+
+
+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);
+