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glibc/sysdeps/ieee754/ldbl-96
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Tulio Magno Quites Machado Filho 1ef9b6e0bf Do not redirect calls to __GI_* symbols, when redirecting to *ieee128 
On platforms where long double has IEEE binary128 format as a third
option (initially, only powerpc64le), many exported functions are
redirected to their __*ieee128 equivalents.  This redirection is
provided by installed headers such as stdio-ldbl.h, and is supposed to
work correctly with user code.

However, during the build of glibc, similar redirections are employed,
in internal headers, such as include/stdio.h, in order to avoid extra
PLT entries.  These redirections conflict with the redirections to
__*ieee128, and must be avoided during the build.  This patch protects
the second redirections with a test for __LONG_DOUBLE_USES_FLOAT128, a
new macro that is defined to 1 when functions that deal with long double
typed values reuses the _Float128 implementation (this is currently only
true for powerpc64le).

Tested for powerpc64le, x86_64, and with build-many-glibcs.py.

Co-authored-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
2019-12-27 15:02:10 -03:00
..
bits Do not redirect calls to __GI_* symbols, when redirecting to *ieee128 2019-12-27 15:02:10 -03:00
include/bits
e_acoshl.c Rename all __ieee754_sqrt(f/l) calls to sqrt(f/l) 2018-03-15 19:21:36 +00:00
e_asinl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
e_atanhl.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
e_coshl.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_gammal_r.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
e_hypotl.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_j0l.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
e_j1l.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
e_jnl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
e_lgammal_r.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
e_rem_pio2l.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
e_sinhl.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
gamma_product.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
gamma_productl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
k_cosl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
k_sinl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
k_tanl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
ldbl2mpn.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
lgamma_negl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
lgamma_product.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
lgamma_productl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
Makefile Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
math_ldbl.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
math-nan-payload-ldouble.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
mpn2ldbl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
printf_fphex.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_asinhl.c Use copysign functions not __copysign functions in glibc libm. 2018-09-27 20:04:48 +00:00
s_cbrtl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_copysignl.c Use copysign functions not __copysign functions in glibc libm. 2018-09-27 20:04:48 +00:00
s_cosl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_daddl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_ddivl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_dmull.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_dsubl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_erfl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_faddl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_fdivl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_fma.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_fmal.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_fmull.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_frexpl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_fromfpl_main.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_fromfpl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_fromfpxl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_fsubl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_getpayloadl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_iscanonicall.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_issignalingl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_llrintl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_llroundl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_lrintl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_lroundl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_modfl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_nexttoward.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_nexttowardf.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_nextupl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_remquol.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_roundevenl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_roundl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_scalblnl.c Use copysign functions not __copysign functions in glibc libm. 2018-09-27 20:04:48 +00:00
s_setpayloadl_main.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_setpayloadl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_setpayloadsigl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_signbitl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_sincosl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_sinl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_tanhl.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_tanl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_totalorderl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_totalordermagl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
s_ufromfpl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
s_ufromfpxl.c Use libm_alias_ldouble for ldbl-96 functions. 2017-10-05 21:13:40 +00:00
strtold_l.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
t_sincosl.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
test-canonical-ldbl-96.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
test-totalorderl-ldbl-96.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
x2y2m1.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
x2y2m1l.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00