| # |
| # Copyright (C) 2016 The Android Open Source Project |
| # |
| # 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. |
| # |
| |
| # Common global variables and helper methods for the in-memory python script. |
| # The script starts with this file and is followed by the code generated form |
| # the templated snippets. Those define all the helper functions used below. |
| |
| import sys, re |
| from cStringIO import StringIO |
| |
| out = StringIO() # File-like in-memory buffer. |
| handler_size_bytes = "MTERP_HANDLER_SIZE" |
| handler_size_bits = "MTERP_HANDLER_SIZE_LOG2" |
| opcode = "" |
| opnum = "" |
| |
| def write_line(line): |
| out.write(line + "\n") |
| |
| def balign(): |
| write_line(" .balign {}".format(handler_size_bytes)) |
| |
| def write_opcode(num, name, write_method): |
| global opnum, opcode |
| opnum, opcode = str(num), name |
| write_line("/* ------------------------------ */") |
| balign() |
| write_line(".L_{1}: /* {0:#04x} */".format(num, name)) |
| opcode_start() |
| opcode_pre() |
| write_method() |
| opcode_end() |
| write_line("") |
| opnum, opcode = None, None |
| |
| generated_helpers = {} |
| |
| # This method generates a helper using the provided writer method. |
| # The output is temporarily redirected to in-memory buffer. |
| def add_helper(write_helper, name = None): |
| if name == None: |
| name = "Mterp_" + opcode + "_helper" |
| global out |
| old_out = out |
| out = StringIO() |
| helper_start(name) |
| write_helper() |
| helper_end(name) |
| out.seek(0) |
| generated_helpers[name] = out.read() |
| out = old_out |
| return name |
| |
| def generate(output_filename): |
| out.seek(0) |
| out.truncate() |
| write_line("/* DO NOT EDIT: This file was generated by gen-mterp.py. */") |
| header() |
| entry() |
| |
| instruction_start() |
| opcodes() |
| balign() |
| instruction_end() |
| |
| for name, helper in sorted(generated_helpers.items()): |
| out.write(helper) |
| helpers() |
| |
| footer() |
| |
| out.seek(0) |
| # Squash consequtive empty lines. |
| text = re.sub(r"(\n\n)(\n)+", r"\1", out.read()) |
| with open(output_filename, 'w') as output_file: |
| output_file.write(text) |
| |