cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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main.py (3187B)

      1# This work is licensed under the terms of the GNU GPL, version 2 or later.
      2# See the COPYING file in the top-level directory.
      3
      4"""
      5QAPI Generator
      6
      7This is the main entry point for generating C code from the QAPI schema.
      8"""
      9
     10import argparse
     11import sys
     12from typing import Optional
     13
     14from .commands import gen_commands
     15from .common import must_match
     16from .error import QAPIError
     17from .events import gen_events
     18from .introspect import gen_introspect
     19from .schema import QAPISchema
     20from .types import gen_types
     21from .visit import gen_visit
     22
     23
     24def invalid_prefix_char(prefix: str) -> Optional[str]:
     25    match = must_match(r'([A-Za-z_.-][A-Za-z0-9_.-]*)?', prefix)
     26    if match.end() != len(prefix):
     27        return prefix[match.end()]
     28    return None
     29
     30
     31def generate(schema_file: str,
     32             output_dir: str,
     33             prefix: str,
     34             unmask: bool = False,
     35             builtins: bool = False) -> None:
     36    """
     37    Generate C code for the given schema into the target directory.
     38
     39    :param schema_file: The primary QAPI schema file.
     40    :param output_dir: The output directory to store generated code.
     41    :param prefix: Optional C-code prefix for symbol names.
     42    :param unmask: Expose non-ABI names through introspection?
     43    :param builtins: Generate code for built-in types?
     44
     45    :raise QAPIError: On failures.
     46    """
     47    assert invalid_prefix_char(prefix) is None
     48
     49    schema = QAPISchema(schema_file)
     50    gen_types(schema, output_dir, prefix, builtins)
     51    gen_visit(schema, output_dir, prefix, builtins)
     52    gen_commands(schema, output_dir, prefix)
     53    gen_events(schema, output_dir, prefix)
     54    gen_introspect(schema, output_dir, prefix, unmask)
     55
     56
     57def main() -> int:
     58    """
     59    gapi-gen executable entry point.
     60    Expects arguments via sys.argv, see --help for details.
     61
     62    :return: int, 0 on success, 1 on failure.
     63    """
     64    parser = argparse.ArgumentParser(
     65        description='Generate code from a QAPI schema')
     66    parser.add_argument('-b', '--builtins', action='store_true',
     67                        help="generate code for built-in types")
     68    parser.add_argument('-o', '--output-dir', action='store',
     69                        default='',
     70                        help="write output to directory OUTPUT_DIR")
     71    parser.add_argument('-p', '--prefix', action='store',
     72                        default='',
     73                        help="prefix for symbols")
     74    parser.add_argument('-u', '--unmask-non-abi-names', action='store_true',
     75                        dest='unmask',
     76                        help="expose non-ABI names in introspection")
     77    parser.add_argument('schema', action='store')
     78    args = parser.parse_args()
     79
     80    funny_char = invalid_prefix_char(args.prefix)
     81    if funny_char:
     82        msg = f"funny character '{funny_char}' in argument of --prefix"
     83        print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
     84        return 1
     85
     86    try:
     87        generate(args.schema,
     88                 output_dir=args.output_dir,
     89                 prefix=args.prefix,
     90                 unmask=args.unmask,
     91                 builtins=args.builtins)
     92    except QAPIError as err:
     93        print(f"{sys.argv[0]}: {str(err)}", file=sys.stderr)
     94        return 1
     95    return 0