mirror of
https://sourceware.org/git/binutils-gdb.git
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1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/* The IGEN simulator generator for GDB, the GNU Debugger.
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Copyright 2002-2024 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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#ifndef IGEN_GEN_SEMANTICS_H
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#define IGEN_GEN_SEMANTICS_H
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/* Creates the files semantics.[hc].
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The generated file semantics contains functions that implement the
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operations required to model a single target processor instruction.
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Several different variations on the semantics file can be created:
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o uncached
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No instruction cache exists. The semantic function
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needs to generate any required values locally.
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o cached - separate cracker and semantic
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Two independant functions are created. Firstly the
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function that cracks an instruction entering it into a
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cache and secondly the semantic function propper that
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uses the cache.
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o cached - semantic + cracking semantic
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The function that cracks the instruction and enters
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all values into the cache also contains a copy of the
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semantic code (avoiding the need to call both the
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cracker and the semantic function when there is a
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cache miss).
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For each of these general forms, several refinements can occure:
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o do/don't duplicate/expand semantic functions
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As a consequence of decoding an instruction, the
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decoder, as part of its table may have effectivly made
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certain of the variable fields in an instruction
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constant. Separate functions for each of the
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alternative values for what would have been treated as
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a variable part can be created.
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o use cache struct directly.
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When a cracking cache is present, the semantic
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functions can be generated to either hold intermediate
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cache values in local variables or always refer to the
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contents of the cache directly. */
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extern void print_semantic_declaration
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(lf *file,
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const insn_entry *insn,
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const opcode_bits *bits,
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const insn_opcodes *opcodes,
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int nr_prefetched_words);
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extern void print_semantic_definition
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(lf *file,
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const insn_entry *insn,
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const opcode_bits *bits,
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const insn_opcodes *opcodes,
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cache_entry *cache_rules,
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int nr_prefetched_words);
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typedef enum
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{
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invalid_illegal,
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invalid_fp_unavailable,
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invalid_wrong_slot,
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}
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invalid_type;
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extern void print_idecode_invalid
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(lf *file, const char *result, invalid_type type);
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extern void print_semantic_body
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(lf *file,
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const insn_entry *instruction,
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const opcode_bits *expanded_bits,
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const insn_opcodes *opcodes);
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#endif /* IGEN_GEN_SEMANTICS_H */
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