102 lines
2.9 KiB
Python
102 lines
2.9 KiB
Python
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#!/usr/bin/python2
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# Copyright 2016 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import binascii
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import optparse
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import sys
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parser = optparse.OptionParser()
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parser.add_option("--mac",
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help="generate assembly file for Mac/iOS (default: False)",
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action="store_true", default=False)
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parser.add_option("--win",
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help="generate assembly file for Windows (default: False)",
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action="store_true", default=False)
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parser.set_usage("""make_data_assembly icu_data [assembly_file] [--mac] [--win]
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icu_data: ICU data file to generate assembly from.
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assembly_file: Output file converted from icu_data file.""")
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(options, args) = parser.parse_args()
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if len(args) < 1:
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parser.error("ICU data file is not given.")
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input_file = args[0]
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n = input_file.find(".dat")
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if n == -1:
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sys.exit("%s is not an ICU .dat file." % input_file)
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if len(args) < 2:
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output_file = input_file[0:n] + "_dat.S"
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else:
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output_file = args[1]
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if input_file.find("l.dat") == -1:
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if input_file.find("b.dat") == -1:
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sys.exit("%s has no endianness marker." % input_file)
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else:
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step = 1
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else:
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step = -1
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input_data = open(input_file, 'rb').read()
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n = input_data.find(b'icudt')
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if n == -1:
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sys.exit("Cannot find a version number in %s." % input_file)
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version_number = input_data[n + 5:n + 7].decode("ascii")
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output = open(output_file, 'w')
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if options.mac:
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output.write(".globl _icudt%s_dat\n"
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"#ifdef U_HIDE_DATA_SYMBOL\n"
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"\t.private_extern _icudt%s_dat\n"
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"#endif\n"
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"\t.data\n"
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"\t.const\n"
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"\t.align 4\n"
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"_icudt%s_dat:\n" %tuple([version_number] * 3))
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elif options.win:
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output.write(".globl _icudt%s_dat\n"
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"\t.section .rdata\n"
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"\t.balign 16\n"
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"_icudt%s_dat:\n" % tuple([version_number] * 2))
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else:
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output.write(".globl icudt%s_dat\n"
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"\t.section .note.GNU-stack,\"\",%%progbits\n"
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"\t.section .rodata\n"
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"\t.balign 16\n"
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"#ifdef U_HIDE_DATA_SYMBOL\n"
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"\t.hidden icudt%s_dat\n"
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"#endif\n"
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"\t.type icudt%s_dat,%%object\n"
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"icudt%s_dat:\n" % tuple([version_number] * 4))
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split = [binascii.hexlify(input_data[i:i + 4][::step]).decode('ascii').upper().lstrip('0')
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for i in range(0, len(input_data), 4)]
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for i in range(len(split)):
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if (len(split[i]) == 0):
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value = '0'
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elif (len(split[i]) == 1):
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if not any((c in '123456789') for c in split[i]):
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value = '0x0' + split[i]
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else:
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value = split[i]
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elif (len(split[i]) % 2 == 1):
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value = '0x0' + split[i]
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else:
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value = '0x' + split[i]
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if (i % 32 == 0):
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output.write("\n.long ")
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else:
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output.write(",")
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output.write(value)
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output.write("\n")
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output.close()
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