create-symbol-table-index.py   [plain text]

#!/usr/bin/python

# Copyright (C) 2014 Apple Inc. All rights reserved.
# Copyright (C) 2014 University of Szeged. All rights reserved.
# Copyright (C) 2014 Samsung Electronics. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import glob
import os
import subprocess
import sys
import shutil
import re
from sets import Set
from operator import itemgetter

print("Building Index Table")

RUNTIME_INSTALL_DIR = sys.argv[1]
JSC_DIR = sys.argv[2]
DERIVED_SOURCES_DIR = sys.argv[3]
LLVM_BINS = sys.argv[4]

try:
    os.mkdir(os.path.join(RUNTIME_INSTALL_DIR, "runtime"))
except OSError:
    pass

symbol_table_location = os.path.join(RUNTIME_INSTALL_DIR, "runtime", "Runtime.symtbl")

symbol_table = {}

symbol_table_is_out_of_date = False

symbol_table_modification_time = 0

if os.path.isfile(symbol_table_location):
    symbol_table_modification_time = os.path.getmtime(symbol_table_location)

file_suffix = "bc"
file_suffix_length = len(file_suffix)

tested_symbols_location = os.path.join(JSC_DIR, "tested-symbols.symlst")
include_symbol_table_location = os.path.join(DERIVED_SOURCES_DIR, "InlineRuntimeSymbolTable.h")

tested_symbols = Set([])

if os.path.isfile(tested_symbols_location):
    with open(tested_symbols_location, 'r') as file:
        print("Loading tested symbols")
        for line in file:
            tested_symbols.add(line[:-1])

for bitcode_file in glob.iglob(os.path.join(RUNTIME_INSTALL_DIR, "runtime", "*." + file_suffix)):
    bitcode_basename = os.path.basename(bitcode_file)

    print("Appending symbols from " + bitcode_basename)
    lines = subprocess.check_output([os.path.join(LLVM_BINS, "llvm-nm"), "--defined-only", bitcode_file]).splitlines()

    for line in lines:
        symbol = line.split()[1]
        if (symbol[:1] == "_" and symbol[-3:] != ".eh" and (("_" + symbol in tested_symbols) or ("_" + symbol[:7] + "L" + symbol[7:] in tested_symbols))):
            symbol_table[symbol] = bitcode_basename

if os.path.isfile(symbol_table_location):
    with open(symbol_table_location, 'r') as file:
        print("Loading symbol table")
        for line in file:
            symbol, _, location = line[:-1].partition(" ")
            # don't overwrite new symbols with old locations
            if not symbol in symbol_table:
                symbol_table[symbol] = location

symbol_list = symbol_table.items()

print("Writing symbol table: " + symbol_table_location)
print("Writing inline file: " + include_symbol_table_location)

with open(symbol_table_location, "w") as symbol_file:
    with open(include_symbol_table_location, "w") as include_file:
        include_file.write("#define FOR_EACH_LIBRARY_SYMBOL(macro)")
        for symbol, location in symbol_list:
            symbol_file.write("{} {}\n".format(symbol, location))
            include_file.write(" \\\nmacro(\"{}\", \"{}\")".format(symbol, location))
        include_file.write("\n")
print("Done")