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-/* This file is part of the program psim.
-
- Copyright (C) 1994-1995, 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.
-
- */
-
-
-/* Creates the files semantics.[hc].
-
- The generated file semantics contains functions that implement the
- operations required to model a single target processor instruction.
-
- Several different variations on the semantics file can be created:
-
- o uncached
-
- No instruction cache exists. The semantic function
- needs to generate any required values locally.
-
- o cached - separate cracker and semantic
-
- Two independant functions are created. Firstly the
- function that cracks an instruction entering it into a
- cache and secondly the semantic function propper that
- uses the cache.
-
- o cached - semantic + cracking semantic
-
- The function that cracks the instruction and enters
- all values into the cache also contains a copy of the
- semantic code (avoiding the need to call both the
- cracker and the semantic function when there is a
- cache miss).
-
- For each of these general forms, several refinements can occure:
-
- o do/don't duplicate/expand semantic functions
-
- As a consequence of decoding an instruction, the
- decoder, as part of its table may have effectivly made
- certain of the variable fields in an instruction
- constant. Separate functions for each of the
- alternative values for what would have been treated as
- a variable part can be created.
-
- o use cache struct directly.
-
- When a cracking cache is present, the semantic
- functions can be generated to either hold intermediate
- cache values in local variables or always refer to the
- contents of the cache directly. */
-
-
-
-extern insn_handler print_semantic_declaration;
-extern insn_handler print_semantic_definition;
-
-extern void print_idecode_illegal
-(lf *file,
- const char *result);
-
-extern void print_semantic_body
-(lf *file,
- insn *instruction,
- insn_bits *expanded_bits,
- opcode_field *opcodes);
-