ldbl-128ibm-compat: Add err.h functions

Use the recently added, internal functions, __vwarnx_internal and
__vwarn_internal, to provide err.h functions that can take long double
arguments with IEEE binary128 format on platforms where long double can
also take double format or some non-IEEE format (currently, this means
powerpc64le).

Tested for powerpc64le.

Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>

3 files changed, 106 insertions, 0 deletions

diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
index dc1ceaae7e..6bb0bed2fc 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
@@ -174,6 +174,10 @@ CFLAGS-tst-ieee128-argp.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
 CFLAGS-tst-ibm128-argp.c += -mabi=ibmlongdouble -Wno-psabi
 endif
 
+ifeq ($(subdir),misc)
+ldbl-extra-routines += err
+endif
+
 # Add IEEE binary128 files as make targets.
 routines += $(foreach r,$(ldbl-extra-routines),ieee128-$(r))
 
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Versions b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
index 8e80b2bade..e2b3dda551 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Versions
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
@@ -183,5 +183,14 @@ libc {
 
     __argp_errorieee128;
     __argp_failureieee128;
+
+    __warnieee128;
+    __warnxieee128;
+    __vwarnieee128;
+    __vwarnxieee128;
+    __errieee128;
+    __errxieee128;
+    __verrieee128;
+    __verrxieee128;
   }
 }
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-err.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-err.c
new file mode 100644
index 0000000000..df2c306fdc
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-err.c
@@ -0,0 +1,93 @@
+/* Wrappers for err.h functions.  IEEE128 version.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library 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.
+
+   The GNU C Library 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <err.h>
+#include <stdarg.h>
+#include <libio/libioP.h>
+
+#define VA(call)							\
+{									\
+  va_list ap;								\
+  va_start (ap, format);						\
+  IEEE128_CALL (call);							\
+  va_end (ap);								\
+}
+
+#define IEEE128_ALIAS(name) \
+  strong_alias (___ieee128_##name, __##name##ieee128)
+
+#define IEEE128_DECL(name) ___ieee128_##name
+#define IEEE128_CALL(name) ___ieee128_##name
+
+void
+IEEE128_DECL (vwarn) (const char *format, __gnuc_va_list ap)
+{
+  __vwarn_internal (format, ap, PRINTF_LDBL_USES_FLOAT128);
+}
+IEEE128_ALIAS (vwarn)
+
+void
+IEEE128_DECL (vwarnx) (const char *format, __gnuc_va_list ap)
+{
+  __vwarnx_internal (format, ap, PRINTF_LDBL_USES_FLOAT128);
+}
+IEEE128_ALIAS (vwarnx)
+
+void
+IEEE128_DECL (warn) (const char *format, ...)
+{
+  VA (vwarn (format, ap))
+}
+IEEE128_ALIAS (warn)
+
+void
+IEEE128_DECL (warnx) (const char *format, ...)
+{
+  VA (vwarnx (format, ap))
+}
+IEEE128_ALIAS (warnx)
+
+void
+IEEE128_DECL (verr) (int status, const char *format, __gnuc_va_list ap)
+{
+  IEEE128_CALL (vwarn) (format, ap);
+  exit (status);
+}
+IEEE128_ALIAS (verr)
+
+void
+IEEE128_DECL (verrx) (int status, const char *format, __gnuc_va_list ap)
+{
+  IEEE128_CALL (vwarnx) (format, ap);
+  exit (status);
+}
+IEEE128_ALIAS (verrx)
+
+void
+IEEE128_DECL (err) (int status, const char *format, ...)
+{
+  VA (verr (status, format, ap))
+}
+IEEE128_ALIAS (err)
+
+void
+IEEE128_DECL (errx) (int status, const char *format, ...)
+{
+  VA (verrx (status, format, ap))
+}
+IEEE128_ALIAS (errx)