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f4pga/utils: all python scripts moved from quicklogic arch-defs tarballs
Signed-off-by: Pawel Czarnecki <pczarnecki@antmicro.com>
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|---|---|---|
| @@ -0,0 +1,221 @@ | ||
| #!/usr/bin/env python3 | ||
| # -*- coding: utf-8 -*- | ||
| # | ||
| # Copyright (C) 2022 F4PGA Authors | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| # | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| """ | ||
| This script reads Verilog compile options string from stdin and outputs a | ||
| series of Yosys commands that implement them to stdout. | ||
| """ | ||
|
|
||
| import os | ||
| import sys | ||
| import shlex | ||
|
|
||
|
|
||
| def eprint(*args, **kwargs): | ||
| """ | ||
| Like print() but to stderr | ||
| """ | ||
| print(*args, file=sys.stderr, **kwargs) | ||
|
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||
|
|
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| def parse_options(lines, opts=None): | ||
| """ | ||
| Parses compile options | ||
| """ | ||
|
|
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| # Remove "#" comments and C/C++ style "//" comments, remove blank lines, | ||
| # join all remaining ones into a single string | ||
| opt_string = "" | ||
| for line in lines: | ||
|
|
||
| # Remove comments | ||
| pos = line.find("#") | ||
| if pos != -1: | ||
| line = line[:pos] | ||
|
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| pos = line.find("//") | ||
| if pos != -1: | ||
| line = line[:pos] | ||
|
|
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| # Append | ||
| line = line.strip() | ||
| if line: | ||
| opt_string += line + " " | ||
|
|
||
| # Remove all C/C++ style "/* ... */" comments | ||
| while True: | ||
|
|
||
| # Find beginning of a block comment. Finish if none is found | ||
| p0 = opt_string.find("/*") | ||
| if p0 == -1: | ||
| break | ||
|
|
||
| # Find ending of a block comments. Throw an error if none is found | ||
| p1 = opt_string.find("*/", p0 + 2) | ||
| if p1 == -1: | ||
| eprint("ERROR: Unbalanced block comment!") | ||
| exit(-1) | ||
|
|
||
| # Remove the comment | ||
| opt_string = opt_string[:p0] + opt_string[p1 + 2 :] | ||
|
|
||
| # Initialize options if not given | ||
| if opts is None: | ||
| opts = {"incdir": set(), "libdir": set(), "libext": set(), "defines": {}} | ||
|
|
||
| # Scan and process options | ||
| parts = iter(shlex.split(opt_string)) | ||
| while True: | ||
|
|
||
| # Get the option | ||
| try: | ||
| opt = next(parts) | ||
| except StopIteration: | ||
| break | ||
|
|
||
| # A file containing options | ||
| if opt == "-f": | ||
| try: | ||
| arg = next(parts) | ||
| except StopIteration: | ||
| eprint("ERROR: Missing file name for '-f'") | ||
| exit(-1) | ||
|
|
||
| # Open and read the file, recurse | ||
| if not os.path.isfile(arg): | ||
| eprint("ERROR: File '{}' does not exist".format(arg)) | ||
| exit(-1) | ||
|
|
||
| with open(arg, "r") as fp: | ||
| lines = fp.readlines() | ||
|
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| parse_options(lines, opts) | ||
|
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||
| # Verilog library directory | ||
| elif opt == "-y": | ||
| try: | ||
| arg = next(parts) | ||
| except StopIteration: | ||
| eprint("ERROR: Missing directory name for '-y'") | ||
| exit(-1) | ||
|
|
||
| if not os.path.isdir(arg): | ||
| eprint("ERROR: Directory '{}' does not exist".format(arg)) | ||
| exit(-1) | ||
|
|
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| opts["libdir"].add(arg) | ||
|
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||
| # Library file extensions | ||
| elif opt.startswith("+libext+"): | ||
| args = opt.strip().split("+") | ||
| if len(args) < 2: | ||
| eprint("ERROR: Missing file extensions(s) for '+libext+'") | ||
| exit(-1) | ||
|
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| opts["libext"] |= set(args[2:]) | ||
|
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| # Verilog include directory | ||
| elif opt.startswith("+incdir+"): | ||
| args = opt.strip().split("+") | ||
| if len(args) < 2: | ||
| eprint("ERROR: Missing file name(s) for '+incdir+'") | ||
| exit(-1) | ||
|
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| opts["incdir"] |= set(args[2:]) | ||
|
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| # Verilog defines | ||
| elif opt.startswith("+define+"): | ||
| args = opt.strip().split("+") | ||
| if len(args) < 2: | ||
| eprint("ERROR: Malformed '+define+' directive") | ||
| exit(-1) | ||
|
|
||
| # Parse defines. They may or may not have values | ||
| for arg in args[2:]: | ||
| if "=" in arg: | ||
| key, value = arg.split("=") | ||
| else: | ||
| key, value = arg, None | ||
|
|
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| if key in opts["defines"]: | ||
| eprint("ERROR: Macro '{}' defined twice!".format(key)) | ||
| opts["defines"][key] = value | ||
|
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| return opts | ||
|
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|
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||
| def quote(s): | ||
| """ | ||
| Quotes a string if it needs it | ||
| """ | ||
| if " " in s: | ||
| return '"' + s + '"' | ||
| else: | ||
| return s | ||
|
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|
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| def translate_options(opts): | ||
| """ | ||
| Translates the given options into Yosys commands | ||
| """ | ||
|
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| commands = [] | ||
|
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| # Include directories | ||
| for incdir in opts["incdir"]: | ||
| cmd = "verilog_defaults -add -I{}".format(quote(incdir)) | ||
| commands.append(cmd) | ||
|
|
||
| # Macro defines | ||
| for key, val in opts["defines"].items(): | ||
| if val is not None: | ||
| cmd = "verilog_defaults -add -D{}={}".format(key, val) | ||
| else: | ||
| cmd = "verilog_defaults -add -D{}".format(key) | ||
| commands.append(cmd) | ||
|
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| # Since Yosys does not automatically search for an unknown module in | ||
| # verilog files make it read all library files upfront. Do this by | ||
| # searching for files with extensions provided with "+libext+" in | ||
| # paths privided by "-y". | ||
| libext = opts["libext"] | {"v"} | ||
|
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| for libdir in opts["libdir"]: | ||
| for f in os.listdir(libdir): | ||
| _, ext = os.path.splitext(f) | ||
| if ext.replace(".", "") in libext: | ||
| fname = os.path.join(libdir, f) | ||
| cmd = "read_verilog {}".format(quote(fname)) | ||
| commands.append(cmd) | ||
|
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| return commands | ||
|
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| # ============================================================================= | ||
|
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| if __name__ == "__main__": | ||
|
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| # Read lines from stdin, parse options | ||
| lines = sys.stdin.readlines() | ||
| opts = parse_options(lines) | ||
|
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| # Translate parsed options to Yosys commands and output them | ||
| cmds = translate_options(opts) | ||
| for cmd in cmds: | ||
| print(cmd) |
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