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63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
"""Generate the list of opcode IDs.
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Reads the instruction definitions from bytecodes.c.
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Writes the IDs to opcode_ids.h by default.
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"""
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import argparse
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from analyzer import (
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Analysis,
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analyze_files,
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)
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from generators_common import (
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DEFAULT_INPUT,
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ROOT,
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write_header,
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)
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from cwriter import CWriter
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from typing import TextIO
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DEFAULT_OUTPUT = ROOT / "Include/opcode_ids.h"
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def generate_opcode_header(
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filenames: list[str], analysis: Analysis, outfile: TextIO
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) -> None:
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write_header(__file__, filenames, outfile)
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out = CWriter(outfile, 0, False)
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with out.header_guard("Py_OPCODE_IDS_H"):
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out.emit("/* Instruction opcodes for compiled code */\n")
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def write_define(name: str, op: int) -> None:
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out.emit(f"#define {name:<38} {op:>3}\n")
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for op, name in sorted([(op, name) for (name, op) in analysis.opmap.items()]):
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write_define(name, op)
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out.emit("\n")
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write_define("HAVE_ARGUMENT", analysis.have_arg)
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write_define("MIN_SPECIALIZED_OPCODE", analysis.opmap["RESUME"]+1)
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write_define("MIN_INSTRUMENTED_OPCODE", analysis.min_instrumented)
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arg_parser = argparse.ArgumentParser(
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description="Generate the header file with all opcode IDs.",
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formatter_class=argparse.ArgumentDefaultsHelpFormatter,
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)
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arg_parser.add_argument(
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"-o", "--output", type=str, help="Generated code", default=DEFAULT_OUTPUT
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)
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arg_parser.add_argument(
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"input", nargs=argparse.REMAINDER, help="Instruction definition file(s)"
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)
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if __name__ == "__main__":
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args = arg_parser.parse_args()
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if len(args.input) == 0:
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args.input.append(DEFAULT_INPUT)
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data = analyze_files(args.input)
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with open(args.output, "w") as outfile:
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generate_opcode_header(args.input, data, outfile)
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