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1 #!/usr/bin/python3
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2 # Update libquadmath code from glibc sources.
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3 # Copyright (C) 2018 Free Software Foundation, Inc.
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4 # This file is part of the libquadmath library.
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5 #
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6 # Libquadmath is free software; you can redistribute it and/or
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7 # modify it under the terms of the GNU Lesser General Public
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8 # License as published by the Free Software Foundation; either
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9 # version 2.1 of the License, or (at your option) any later version.
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10 #
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11 # Libquadmath is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 # Lesser General Public License for more details.
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15 #
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16 # You should have received a copy of the GNU Lesser General Public
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17 # License along with libquadmath; if not, see
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18 # <https://www.gnu.org/licenses/>.
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19
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20 # Usage: update-quadmath.py glibc_srcdir quadmath_srcdir
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21
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22 import argparse
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23 from collections import defaultdict
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24 import os.path
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25 import re
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26
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27
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28 def replace_in_file(repl_map, extra_map, src, dest):
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29 """Apply the replacements in repl_map, then those in extra_map, to the
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30 file src, producing dest."""
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31 with open(src, 'r') as src_file:
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32 text = src_file.read()
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33 for re_src, re_repl in sorted(repl_map.items()):
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34 text = re.sub(re_src, re_repl, text)
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35 for re_src, re_repl in sorted(extra_map.items()):
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36 text = re.sub(re_src, re_repl, text)
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37 text = text.rstrip() + '\n'
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38 with open(dest, 'w') as dest_file:
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39 dest_file.write(text)
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40
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41
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42 def update_sources(glibc_srcdir, quadmath_srcdir):
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43 """Update libquadmath sources."""
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44 glibc_ldbl128 = os.path.join(glibc_srcdir, 'sysdeps/ieee754/ldbl-128')
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45 glibc_math = os.path.join(glibc_srcdir, 'math')
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46 quadmath_math = os.path.join(quadmath_srcdir, 'math')
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47 float128_h = os.path.join(glibc_srcdir,
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48 'sysdeps/ieee754/float128/float128_private.h')
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49 repl_map = {}
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50 # Use float128_private.h to get an initial list of names to
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51 # replace for libquadmath.
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52 repl_names = {}
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53 with open(float128_h, 'r') as header:
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54 for line in header:
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55 line = line.strip()
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56 if not line.startswith('#define '):
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57 continue
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58 match = re.fullmatch('^#define[ \t]+([a-zA-Z0-9_]+)'
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59 '[ \t]+([a-zA-Z0-9_]+)', line)
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60 if not match:
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61 continue
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62 macro = match.group(1)
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63 result = match.group(2)
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64 result = result.replace('f128', 'q')
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65 result = result.replace('__ieee754_', '')
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66 if result not in ('__expq_table', '__sincosq_table',
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67 '__builtin_signbit'):
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68 result = result.replace('__', '')
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69 result = result.replace('_do_not_use', '')
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70 if result in ('rem_pio2q', 'kernel_sincosq', 'kernel_sinq',
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71 'kernel_cosq', 'kernel_tanq', 'gammaq_r',
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72 'gamma_productq', 'lgamma_negq', 'lgamma_productq',
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73 'lgammaq_r', 'x2y2m1q'):
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74 # Internal function names, for which the above removal
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75 # of leading '__' was inappropriate and a leading
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76 # '__quadmath_' needs adding instead. In the
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77 # libquadmath context, lgammaq_r is an internal name.
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78 result = '__quadmath_' + result
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79 if result == 'ieee854_float128_shape_type':
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80 result = 'ieee854_float128'
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81 if result == 'HUGE_VAL_F128':
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82 result = 'HUGE_VALQ'
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83 repl_names[macro] = result
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84 # More such names that aren't simply defined as object-like macros
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85 # in float128_private.h.
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86 repl_names['_Float128'] = '__float128'
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87 repl_names['SET_RESTORE_ROUNDL'] = 'SET_RESTORE_ROUNDF128'
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88 repl_names['parts32'] = 'words32'
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89 for macro in ('GET_LDOUBLE_LSW64', 'GET_LDOUBLE_MSW64',
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90 'GET_LDOUBLE_WORDS64', 'SET_LDOUBLE_LSW64',
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91 'SET_LDOUBLE_MSW64', 'SET_LDOUBLE_WORDS64'):
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92 repl_names[macro] = macro.replace('LDOUBLE', 'FLT128')
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93 # The classication macros are replaced.
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94 for macro in ('FP_NAN', 'FP_INFINITE', 'FP_ZERO', 'FP_SUBNORMAL',
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95 'FP_NORMAL'):
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96 repl_names[macro] = 'QUAD' + macro
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97 for macro in ('fpclassify', 'signbit', 'isnan', 'isinf', 'issignaling'):
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98 repl_names[macro] = macro + 'q'
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99 repl_names['isfinite'] = 'finiteq'
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100 # Map comparison macros to the __builtin forms.
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101 for macro in ('isgreater', 'isgreaterequal', 'isless', 'islessequal',
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102 'islessgreater', 'isunordered'):
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103 repl_names[macro] = '__builtin_' + macro
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104 # Replace macros used in type-generic templates in glibc.
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105 repl_names['FLOAT'] = '__float128'
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106 repl_names['CFLOAT'] = '__complex128'
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107 repl_names['M_NAN'] = 'nanq ("")'
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108 repl_names['M_HUGE_VAL'] = 'HUGE_VALQ'
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109 repl_names['INFINITY'] = '__builtin_inf ()'
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110 for macro in ('MIN_EXP', 'MAX_EXP', 'MIN', 'MAX', 'MANT_DIG', 'EPSILON'):
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111 repl_names['M_%s' % macro] = 'FLT128_%s' % macro
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112 for macro in ('COPYSIGN', 'FABS', 'SINCOS', 'SCALBN', 'LOG1P', 'ATAN2',
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113 'COSH', 'EXP', 'HYPOT', 'LOG', 'SINH', 'SQRT'):
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114 repl_names['M_%s' % macro] = macro.lower() + 'q'
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115 # Each such name is replaced when it appears as a whole word.
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116 for macro in repl_names:
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117 repl_map[r'\b%s\b' % macro] = repl_names[macro]
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118 # Also replace the L macro for constants; likewise M_LIT and M_MLIT.
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119 repl_map[r'\bL *\((.*?)\)'] = r'\1Q'
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120 repl_map[r'\bM_LIT *\((.*?)\)'] = r'\1Q'
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121 repl_map[r'\bM_MLIT *\((.*?)\)'] = r'\1q'
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122 # M_DECL_FUNC and M_SUF need similar replacements.
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123 repl_map[r'\bM_DECL_FUNC *\((?:__)?(?:ieee754_)?(.*?)\)'] = r'\1q'
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124 repl_map[r'\bM_SUF *\((?:__)?(?:ieee754_)?(.*?)\)'] = r'\1q'
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125 # Further adjustments are then needed for certain internal
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126 # functions called via M_SUF.
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127 repl_map[r'\bx2y2m1q\b'] = '__quadmath_x2y2m1q'
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128 repl_map[r'\bkernel_casinhq\b'] = '__quadmath_kernel_casinhq'
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129 # Replace calls to __set_errno.
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130 repl_map[r'\b__set_errno *\((.*?)\)'] = r'errno = \1'
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131 # Eliminate glibc diagnostic macros.
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132 repl_map[r' *\bDIAG_PUSH_NEEDS_COMMENT;'] = ''
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133 repl_map[r' *\bDIAG_IGNORE_NEEDS_COMMENT *\(.*?\);'] = ''
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134 repl_map[r' *\bDIAG_POP_NEEDS_COMMENT;'] = ''
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135 # Different names used in union.
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136 repl_map[r'\.d\b'] = '.value'
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137 repl_map[r'\bunion ieee854_float128\b'] = 'ieee854_float128'
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138 # Calls to alias and hidden_def macros are all eliminated.
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139 for macro in ('strong_alias', 'weak_alias', 'libm_alias_ldouble',
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140 'declare_mgen_alias', 'declare_mgen_finite_alias',
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141 'libm_hidden_def', 'mathx_hidden_def'):
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142 repl_map[r'\b%s *\(.*?\);?' % macro] = ''
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143 # Replace all #includes with a single include of quadmath-imp.h.
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144 repl_map['(\n+#include[^\n]*)+\n+'] = '\n\n#include "quadmath-imp.h"\n\n'
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145 # Omitted from this list because code comes from more than one
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146 # glibc source file: rem_pio2.
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147 ldbl_files = {
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148 'e_acoshl.c': 'acoshq.c', 'e_acosl.c': 'acosq.c',
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149 's_asinhl.c': 'asinhq.c', 'e_asinl.c': 'asinq.c',
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150 'e_atan2l.c': 'atan2q.c', 'e_atanhl.c': 'atanhq.c',
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151 's_atanl.c': 'atanq.c', 's_cbrtl.c': 'cbrtq.c', 's_ceill.c': 'ceilq.c',
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152 's_copysignl.c': 'copysignq.c', 'e_coshl.c': 'coshq.c',
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153 's_cosl.c': 'cosq.c', 'k_cosl.c': 'cosq_kernel.c',
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154 's_erfl.c': 'erfq.c', 's_expm1l.c': 'expm1q.c', 'e_expl.c': 'expq.c',
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155 't_expl.h': 'expq_table.h', 's_fabsl.c': 'fabsq.c',
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156 's_finitel.c': 'finiteq.c', 's_floorl.c': 'floorq.c',
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157 's_fmal.c': 'fmaq.c', 'e_fmodl.c': 'fmodq.c', 's_frexpl.c': 'frexpq.c',
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158 'e_lgammal_r.c': 'lgammaq.c', 'lgamma_negl.c': 'lgammaq_neg.c',
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159 'lgamma_productl.c': 'lgammaq_product.c', 'e_hypotl.c': 'hypotq.c',
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160 'e_ilogbl.c': 'ilogbq.c', 's_isinfl.c': 'isinfq.c',
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161 's_isnanl.c': 'isnanq.c', 's_issignalingl.c': 'issignalingq.c',
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162 'e_j0l.c': 'j0q.c', 'e_j1l.c': 'j1q.c', 'e_jnl.c': 'jnq.c',
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163 's_llrintl.c': 'llrintq.c', 's_llroundl.c': 'llroundq.c',
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164 'e_log10l.c': 'log10q.c', 's_log1pl.c': 'log1pq.c',
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165 'e_log2l.c': 'log2q.c', 's_logbl.c': 'logbq.c', 'e_logl.c': 'logq.c',
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166 's_lrintl.c': 'lrintq.c', 's_lroundl.c': 'lroundq.c',
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167 's_modfl.c': 'modfq.c', 's_nearbyintl.c': 'nearbyintq.c',
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168 's_nextafterl.c': 'nextafterq.c', 'e_powl.c': 'powq.c',
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169 'e_remainderl.c': 'remainderq.c', 's_remquol.c': 'remquoq.c',
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170 's_rintl.c': 'rintq.c', 's_roundl.c': 'roundq.c',
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171 's_scalblnl.c': 'scalblnq.c', 's_scalbnl.c': 'scalbnq.c',
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172 's_signbitl.c': 'signbitq.c', 't_sincosl.c': 'sincos_table.c',
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173 's_sincosl.c': 'sincosq.c', 'k_sincosl.c': 'sincosq_kernel.c',
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174 'e_sinhl.c': 'sinhq.c', 's_sinl.c': 'sinq.c',
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175 'k_sinl.c': 'sinq_kernel.c', 's_tanhl.c': 'tanhq.c',
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176 's_tanl.c': 'tanq.c', 'k_tanl.c': 'tanq_kernel.c',
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177 'e_gammal_r.c': 'tgammaq.c', 'gamma_productl.c': 'tgammaq_product.c',
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178 's_truncl.c': 'truncq.c', 'x2y2m1l.c': 'x2y2m1q.c'
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179 }
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180 template_files = {
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181 's_cacosh_template.c': 'cacoshq.c', 's_cacos_template.c': 'cacosq.c',
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182 's_casinh_template.c': 'casinhq.c',
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183 'k_casinh_template.c': 'casinhq_kernel.c',
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184 's_casin_template.c': 'casinq.c', 's_catanh_template.c': 'catanhq.c',
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185 's_catan_template.c': 'catanq.c', 's_ccosh_template.c': 'ccoshq.c',
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186 's_cexp_template.c': 'cexpq.c', 'cimag_template.c': 'cimagq.c',
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187 's_clog10_template.c': 'clog10q.c', 's_clog_template.c': 'clogq.c',
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188 'conj_template.c': 'conjq.c', 's_cproj_template.c': 'cprojq.c',
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189 'creal_template.c': 'crealq.c', 's_csinh_template.c': 'csinhq.c',
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190 's_csin_template.c': 'csinq.c', 's_csqrt_template.c': 'csqrtq.c',
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191 's_ctanh_template.c': 'ctanhq.c', 's_ctan_template.c': 'ctanq.c',
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192 'e_exp2_template.c': 'exp2q.c', 's_fdim_template.c': 'fdimq.c',
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193 's_fmax_template.c': 'fmaxq.c', 's_fmin_template.c': 'fminq.c',
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194 's_ldexp_template.c': 'ldexpq.c'
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195 }
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196 # Some files have extra substitutions to apply.
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197 extra_maps = defaultdict(dict)
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198 extra_maps['expq.c'] = {r'#include "quadmath-imp\.h"\n':
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199 '#include "quadmath-imp.h"\n'
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200 '#include "expq_table.h"\n'}
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201 extra_maps['ilogbq.c'] = {r'#include "quadmath-imp\.h"\n':
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202 '#include <math.h>\n'
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203 '#include "quadmath-imp.h"\n'
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204 '#ifndef FP_ILOGB0\n'
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205 '# define FP_ILOGB0 INT_MIN\n'
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206 '#endif\n'
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207 '#ifndef FP_ILOGBNAN\n'
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208 '# define FP_ILOGBNAN INT_MAX\n'
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209 '#endif\n',
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210 r'return ([A-Z0-9_]+);':
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211 r'{ errno = EDOM; feraiseexcept (FE_INVALID); '
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212 r'return \1; }'}
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213 extra_maps['lgammaq.c'] = {r'#include "quadmath-imp\.h"\n':
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214 '#include "quadmath-imp.h"\n'
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215 '#ifdef HAVE_MATH_H_SIGNGAM\n'
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216 '# include <math.h>\n'
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217 '#endif\n'
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218 '__float128\n'
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219 'lgammaq (__float128 x)\n'
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220 '{\n'
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221 '#ifndef HAVE_MATH_H_SIGNGAM\n'
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222 ' int signgam;\n'
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223 '#endif\n'
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224 ' return __quadmath_lgammaq_r (x, &signgam);\n'
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225 '}\n'}
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226 extra_maps['tgammaq.c'] = {r'#include "quadmath-imp\.h"\n':
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227 '#include "quadmath-imp.h"\n'
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228 '__float128\n'
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229 'tgammaq (__float128 x)\n'
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230 '{\n'
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231 ' int sign;\n'
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232 ' __float128 ret;\n'
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233 ' ret = __quadmath_gammaq_r (x, &sign);\n'
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234 ' return sign < 0 ? -ret : ret;\n'
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235 '}\n'}
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236 for src, dest in ldbl_files.items():
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237 replace_in_file(repl_map, extra_maps[dest],
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238 os.path.join(glibc_ldbl128, src),
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239 os.path.join(quadmath_math, dest))
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240 for src, dest in template_files.items():
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241 replace_in_file(repl_map, extra_maps[dest],
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242 os.path.join(glibc_math, src),
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243 os.path.join(quadmath_math, dest))
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244
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245 def main():
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246 parser = argparse.ArgumentParser(description='Update libquadmath code.')
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247 parser.add_argument('glibc_srcdir', help='glibc source directory')
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248 parser.add_argument('quadmath_srcdir', help='libquadmath source directory')
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249 args = parser.parse_args()
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250 update_sources(args.glibc_srcdir, args.quadmath_srcdir)
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251
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252
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253 if __name__ == '__main__':
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254 main()
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