| #!/usr/bin/python3 |
| # Update libquadmath code from glibc sources. |
| # Copyright (C) 2018 Free Software Foundation, Inc. |
| # This file is part of the libquadmath library. |
| # |
| # Libquadmath is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU Lesser General Public |
| # License as published by the Free Software Foundation; either |
| # version 2.1 of the License, or (at your option) any later version. |
| # |
| # Libquadmath is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| # Lesser General Public License for more details. |
| # |
| # You should have received a copy of the GNU Lesser General Public |
| # License along with libquadmath; if not, see |
| # <https://www.gnu.org/licenses/>. |
| |
| # Usage: update-quadmath.py glibc_srcdir quadmath_srcdir |
| |
| import argparse |
| from collections import defaultdict |
| import os.path |
| import re |
| |
| |
| def replace_in_file(repl_map, extra_map, src, dest): |
| """Apply the replacements in repl_map, then those in extra_map, to the |
| file src, producing dest.""" |
| with open(src, 'r') as src_file: |
| text = src_file.read() |
| for re_src, re_repl in sorted(repl_map.items()): |
| text = re.sub(re_src, re_repl, text) |
| for re_src, re_repl in sorted(extra_map.items()): |
| text = re.sub(re_src, re_repl, text) |
| text = text.rstrip() + '\n' |
| with open(dest, 'w') as dest_file: |
| dest_file.write(text) |
| |
| |
| def update_sources(glibc_srcdir, quadmath_srcdir): |
| """Update libquadmath sources.""" |
| glibc_ldbl128 = os.path.join(glibc_srcdir, 'sysdeps/ieee754/ldbl-128') |
| glibc_math = os.path.join(glibc_srcdir, 'math') |
| quadmath_math = os.path.join(quadmath_srcdir, 'math') |
| float128_h = os.path.join(glibc_srcdir, |
| 'sysdeps/ieee754/float128/float128_private.h') |
| repl_map = {} |
| # Use float128_private.h to get an initial list of names to |
| # replace for libquadmath. |
| repl_names = {} |
| with open(float128_h, 'r') as header: |
| for line in header: |
| line = line.strip() |
| if not line.startswith('#define '): |
| continue |
| match = re.fullmatch('^#define[ \t]+([a-zA-Z0-9_]+)' |
| '[ \t]+([a-zA-Z0-9_]+)', line) |
| if not match: |
| continue |
| macro = match.group(1) |
| result = match.group(2) |
| result = result.replace('f128', 'q') |
| result = result.replace('__ieee754_', '') |
| if result not in ('__expq_table', '__sincosq_table', |
| '__builtin_signbit'): |
| result = result.replace('__', '') |
| result = result.replace('_do_not_use', '') |
| if result in ('rem_pio2q', 'kernel_sincosq', 'kernel_sinq', |
| 'kernel_cosq', 'kernel_tanq', 'gammaq_r', |
| 'gamma_productq', 'lgamma_negq', 'lgamma_productq', |
| 'lgammaq_r', 'x2y2m1q'): |
| # Internal function names, for which the above removal |
| # of leading '__' was inappropriate and a leading |
| # '__quadmath_' needs adding instead. In the |
| # libquadmath context, lgammaq_r is an internal name. |
| result = '__quadmath_' + result |
| if result == 'ieee854_float128_shape_type': |
| result = 'ieee854_float128' |
| if result == 'HUGE_VAL_F128': |
| result = 'HUGE_VALQ' |
| repl_names[macro] = result |
| # More such names that aren't simply defined as object-like macros |
| # in float128_private.h. |
| repl_names['_Float128'] = '__float128' |
| repl_names['SET_RESTORE_ROUNDL'] = 'SET_RESTORE_ROUNDF128' |
| repl_names['parts32'] = 'words32' |
| for macro in ('GET_LDOUBLE_LSW64', 'GET_LDOUBLE_MSW64', |
| 'GET_LDOUBLE_WORDS64', 'SET_LDOUBLE_LSW64', |
| 'SET_LDOUBLE_MSW64', 'SET_LDOUBLE_WORDS64'): |
| repl_names[macro] = macro.replace('LDOUBLE', 'FLT128') |
| # The classication macros are replaced. |
| for macro in ('FP_NAN', 'FP_INFINITE', 'FP_ZERO', 'FP_SUBNORMAL', |
| 'FP_NORMAL'): |
| repl_names[macro] = 'QUAD' + macro |
| for macro in ('fpclassify', 'signbit', 'isnan', 'isinf', 'issignaling'): |
| repl_names[macro] = macro + 'q' |
| repl_names['isfinite'] = 'finiteq' |
| # Map comparison macros to the __builtin forms. |
| for macro in ('isgreater', 'isgreaterequal', 'isless', 'islessequal', |
| 'islessgreater', 'isunordered'): |
| repl_names[macro] = '__builtin_' + macro |
| # Replace macros used in type-generic templates in glibc. |
| repl_names['FLOAT'] = '__float128' |
| repl_names['CFLOAT'] = '__complex128' |
| repl_names['M_NAN'] = 'nanq ("")' |
| repl_names['M_HUGE_VAL'] = 'HUGE_VALQ' |
| repl_names['INFINITY'] = '__builtin_inf ()' |
| for macro in ('MIN_EXP', 'MAX_EXP', 'MIN', 'MAX', 'MANT_DIG', 'EPSILON'): |
| repl_names['M_%s' % macro] = 'FLT128_%s' % macro |
| for macro in ('COPYSIGN', 'FABS', 'SINCOS', 'SCALBN', 'LOG1P', 'ATAN2', |
| 'COSH', 'EXP', 'HYPOT', 'LOG', 'SINH', 'SQRT'): |
| repl_names['M_%s' % macro] = macro.lower() + 'q' |
| # Each such name is replaced when it appears as a whole word. |
| for macro in repl_names: |
| repl_map[r'\b%s\b' % macro] = repl_names[macro] |
| # Also replace the L macro for constants; likewise M_LIT and M_MLIT. |
| repl_map[r'\bL *\((.*?)\)'] = r'\1Q' |
| repl_map[r'\bM_LIT *\((.*?)\)'] = r'\1Q' |
| repl_map[r'\bM_MLIT *\((.*?)\)'] = r'\1q' |
| # M_DECL_FUNC and M_SUF need similar replacements. |
| repl_map[r'\bM_DECL_FUNC *\((?:__)?(?:ieee754_)?(.*?)\)'] = r'\1q' |
| repl_map[r'\bM_SUF *\((?:__)?(?:ieee754_)?(.*?)\)'] = r'\1q' |
| # Further adjustments are then needed for certain internal |
| # functions called via M_SUF. |
| repl_map[r'\bx2y2m1q\b'] = '__quadmath_x2y2m1q' |
| repl_map[r'\bkernel_casinhq\b'] = '__quadmath_kernel_casinhq' |
| # Replace calls to __set_errno. |
| repl_map[r'\b__set_errno *\((.*?)\)'] = r'errno = \1' |
| # Eliminate glibc diagnostic macros. |
| repl_map[r' *\bDIAG_PUSH_NEEDS_COMMENT;'] = '' |
| repl_map[r' *\bDIAG_IGNORE_NEEDS_COMMENT *\(.*?\);'] = '' |
| repl_map[r' *\bDIAG_POP_NEEDS_COMMENT;'] = '' |
| # Different names used in union. |
| repl_map[r'\.d\b'] = '.value' |
| repl_map[r'\bunion ieee854_float128\b'] = 'ieee854_float128' |
| # Calls to alias and hidden_def macros are all eliminated. |
| for macro in ('strong_alias', 'weak_alias', 'libm_alias_ldouble', |
| 'declare_mgen_alias', 'declare_mgen_finite_alias', |
| 'libm_hidden_def', 'mathx_hidden_def'): |
| repl_map[r'\b%s *\(.*?\);?' % macro] = '' |
| # Replace all #includes with a single include of quadmath-imp.h. |
| repl_map['(\n+#include[^\n]*)+\n+'] = '\n\n#include "quadmath-imp.h"\n\n' |
| # Omitted from this list because code comes from more than one |
| # glibc source file: rem_pio2. |
| ldbl_files = { |
| 'e_acoshl.c': 'acoshq.c', 'e_acosl.c': 'acosq.c', |
| 's_asinhl.c': 'asinhq.c', 'e_asinl.c': 'asinq.c', |
| 'e_atan2l.c': 'atan2q.c', 'e_atanhl.c': 'atanhq.c', |
| 's_atanl.c': 'atanq.c', 's_cbrtl.c': 'cbrtq.c', 's_ceill.c': 'ceilq.c', |
| 's_copysignl.c': 'copysignq.c', 'e_coshl.c': 'coshq.c', |
| 's_cosl.c': 'cosq.c', 'k_cosl.c': 'cosq_kernel.c', |
| 's_erfl.c': 'erfq.c', 's_expm1l.c': 'expm1q.c', 'e_expl.c': 'expq.c', |
| 't_expl.h': 'expq_table.h', 's_fabsl.c': 'fabsq.c', |
| 's_finitel.c': 'finiteq.c', 's_floorl.c': 'floorq.c', |
| 's_fmal.c': 'fmaq.c', 'e_fmodl.c': 'fmodq.c', 's_frexpl.c': 'frexpq.c', |
| 'e_lgammal_r.c': 'lgammaq.c', 'lgamma_negl.c': 'lgammaq_neg.c', |
| 'lgamma_productl.c': 'lgammaq_product.c', 'e_hypotl.c': 'hypotq.c', |
| 'e_ilogbl.c': 'ilogbq.c', 's_isinfl.c': 'isinfq.c', |
| 's_isnanl.c': 'isnanq.c', 's_issignalingl.c': 'issignalingq.c', |
| 'e_j0l.c': 'j0q.c', 'e_j1l.c': 'j1q.c', 'e_jnl.c': 'jnq.c', |
| 's_llrintl.c': 'llrintq.c', 's_llroundl.c': 'llroundq.c', |
| 'e_log10l.c': 'log10q.c', 's_log1pl.c': 'log1pq.c', |
| 'e_log2l.c': 'log2q.c', 's_logbl.c': 'logbq.c', 'e_logl.c': 'logq.c', |
| 's_lrintl.c': 'lrintq.c', 's_lroundl.c': 'lroundq.c', |
| 's_modfl.c': 'modfq.c', 's_nearbyintl.c': 'nearbyintq.c', |
| 's_nextafterl.c': 'nextafterq.c', 'e_powl.c': 'powq.c', |
| 'e_remainderl.c': 'remainderq.c', 's_remquol.c': 'remquoq.c', |
| 's_rintl.c': 'rintq.c', 's_roundl.c': 'roundq.c', |
| 's_scalblnl.c': 'scalblnq.c', 's_scalbnl.c': 'scalbnq.c', |
| 's_signbitl.c': 'signbitq.c', 't_sincosl.c': 'sincos_table.c', |
| 's_sincosl.c': 'sincosq.c', 'k_sincosl.c': 'sincosq_kernel.c', |
| 'e_sinhl.c': 'sinhq.c', 's_sinl.c': 'sinq.c', |
| 'k_sinl.c': 'sinq_kernel.c', 's_tanhl.c': 'tanhq.c', |
| 's_tanl.c': 'tanq.c', 'k_tanl.c': 'tanq_kernel.c', |
| 'e_gammal_r.c': 'tgammaq.c', 'gamma_productl.c': 'tgammaq_product.c', |
| 's_truncl.c': 'truncq.c', 'x2y2m1l.c': 'x2y2m1q.c' |
| } |
| template_files = { |
| 's_cacosh_template.c': 'cacoshq.c', 's_cacos_template.c': 'cacosq.c', |
| 's_casinh_template.c': 'casinhq.c', |
| 'k_casinh_template.c': 'casinhq_kernel.c', |
| 's_casin_template.c': 'casinq.c', 's_catanh_template.c': 'catanhq.c', |
| 's_catan_template.c': 'catanq.c', 's_ccosh_template.c': 'ccoshq.c', |
| 's_cexp_template.c': 'cexpq.c', 'cimag_template.c': 'cimagq.c', |
| 's_clog10_template.c': 'clog10q.c', 's_clog_template.c': 'clogq.c', |
| 'conj_template.c': 'conjq.c', 's_cproj_template.c': 'cprojq.c', |
| 'creal_template.c': 'crealq.c', 's_csinh_template.c': 'csinhq.c', |
| 's_csin_template.c': 'csinq.c', 's_csqrt_template.c': 'csqrtq.c', |
| 's_ctanh_template.c': 'ctanhq.c', 's_ctan_template.c': 'ctanq.c', |
| 'e_exp2_template.c': 'exp2q.c', 's_fdim_template.c': 'fdimq.c', |
| 's_fmax_template.c': 'fmaxq.c', 's_fmin_template.c': 'fminq.c', |
| 's_ldexp_template.c': 'ldexpq.c' |
| } |
| # Some files have extra substitutions to apply. |
| extra_maps = defaultdict(dict) |
| extra_maps['expq.c'] = {r'#include "quadmath-imp\.h"\n': |
| '#include "quadmath-imp.h"\n' |
| '#include "expq_table.h"\n'} |
| extra_maps['ilogbq.c'] = {r'#include "quadmath-imp\.h"\n': |
| '#include <math.h>\n' |
| '#include "quadmath-imp.h"\n' |
| '#ifndef FP_ILOGB0\n' |
| '# define FP_ILOGB0 INT_MIN\n' |
| '#endif\n' |
| '#ifndef FP_ILOGBNAN\n' |
| '# define FP_ILOGBNAN INT_MAX\n' |
| '#endif\n', |
| r'return ([A-Z0-9_]+);': |
| r'{ errno = EDOM; feraiseexcept (FE_INVALID); ' |
| r'return \1; }'} |
| extra_maps['lgammaq.c'] = {r'#include "quadmath-imp\.h"\n': |
| '#include "quadmath-imp.h"\n' |
| '#ifdef HAVE_MATH_H_SIGNGAM\n' |
| '# include <math.h>\n' |
| '#endif\n' |
| '__float128\n' |
| 'lgammaq (__float128 x)\n' |
| '{\n' |
| '#ifndef HAVE_MATH_H_SIGNGAM\n' |
| ' int signgam;\n' |
| '#endif\n' |
| ' return __quadmath_lgammaq_r (x, &signgam);\n' |
| '}\n'} |
| extra_maps['tgammaq.c'] = {r'#include "quadmath-imp\.h"\n': |
| '#include "quadmath-imp.h"\n' |
| '__float128\n' |
| 'tgammaq (__float128 x)\n' |
| '{\n' |
| ' int sign;\n' |
| ' __float128 ret;\n' |
| ' ret = __quadmath_gammaq_r (x, &sign);\n' |
| ' return sign < 0 ? -ret : ret;\n' |
| '}\n'} |
| for src, dest in ldbl_files.items(): |
| replace_in_file(repl_map, extra_maps[dest], |
| os.path.join(glibc_ldbl128, src), |
| os.path.join(quadmath_math, dest)) |
| for src, dest in template_files.items(): |
| replace_in_file(repl_map, extra_maps[dest], |
| os.path.join(glibc_math, src), |
| os.path.join(quadmath_math, dest)) |
| |
| def main(): |
| parser = argparse.ArgumentParser(description='Update libquadmath code.') |
| parser.add_argument('glibc_srcdir', help='glibc source directory') |
| parser.add_argument('quadmath_srcdir', help='libquadmath source directory') |
| args = parser.parse_args() |
| update_sources(args.glibc_srcdir, args.quadmath_srcdir) |
| |
| |
| if __name__ == '__main__': |
| main() |
