diff options
| author | Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> | 2019-07-11 11:48:24 -0300 |
|---|---|---|
| committer | Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> | 2019-12-23 16:32:20 -0300 |
| commit | 3021e781783d6fe12de4697b0d98957bc911cad3 (patch) | |
| tree | e2160e9c74cc5343f69b42cf6a1ee3f5fad9a11e /sysdeps/ieee754/ldbl-128ibm-compat/Makefile | |
| parent | dce425341171ec5784c87165e23883630971bd97 (diff) | |
| download | glibc-3021e781783d6fe12de4697b0d98957bc911cad3.tar.gz | |
ldbl-128ibm-compat: Add *cvt functions
This patch adds IEEE long double versions of q*cvt* functions for
powerpc64le. Unlike all other long double to/from string conversion
functions, these do not rely on internal functions that can take
floating-point numbers with different formats and act on them
accordingly, instead, the related files are rebuilt with the
-mabi=ieeelongdouble compiler flag set.
Having -mabi=ieeelongdouble passed to the compiler causes the object
files to be marked with a .gnu_attribute that is incompatible with the
.gnu_attribute in files built with -mabi=ibmlongdouble (the default).
The difference causes error messages similar to the following:
ld: libc_pic.a(s_isinfl.os) uses IBM long double,
libc_pic.a(ieee128-qefgcvt_r.os) uses IEEE long double.
collect2: error: ld returned 1 exit status
make[2]: *** [../Makerules:649: libc_pic.os] Error 1
Although this warning is useful in other situations, the library
actually needs to have functions with different long double formats, so
.gnu_attribute generation is explicitly disabled for these files with
the use of -mno-gnu-attribute.
Tested for powerpc64le on the branch that actually enables the
sysdeps/ieee754/ldbl-128ibm-compat for powerpc64le.
Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm-compat/Makefile')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm-compat/Makefile | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile index 6d5414c54a..49d9af9fea 100644 --- a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile +++ b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile @@ -251,10 +251,18 @@ endif ifeq ($(subdir),misc) ldbl-extra-routines += err \ error \ - syslog + syslog \ + qefgcvt \ + qefgcvt_r + +CFLAGS-ieee128-qefgcvt.c += -mabi=ieeelongdouble -Wno-psabi -mno-gnu-attribute +CFLAGS-ieee128-qefgcvt_r.c += -mabi=ieeelongdouble -Wno-psabi -mno-gnu-attribute tests-internal += tst-ibm128-warn tst-ieee128-warn tests-internal += tst-ibm128-error tst-ieee128-error +tests-internal += tst-ibm128-efgcvt tst-ieee128-efgcvt + +$(objpfx)tst-ieee128-efgcvt: gnulib-tests += $(f128-loader-link) $(objpfx)tst-ibm128-%.c: tst-ldbl-%.c cp $< $@ @@ -264,9 +272,11 @@ $(objpfx)tst-ieee128-%.c: tst-ldbl-%.c CFLAGS-tst-ibm128-warn.c += -mabi=ibmlongdouble -Wno-psabi CFLAGS-tst-ibm128-error.c += -mabi=ibmlongdouble -Wno-psabi +CFLAGS-tst-ibm128-efgcvt.c += -mabi=ibmlongdouble -Wno-psabi CFLAGS-tst-ieee128-warn.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi CFLAGS-tst-ieee128-error.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi +CFLAGS-tst-ieee128-efgcvt.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi tests-container += test-syslog-ieee128 test-syslog-ibm128 CFLAGS-test-syslog-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi |