ldbl-128ibm-compat: Add argp_error and argp_failure

Use the recently added, internal functions, __argp_error_internal and
__argp_failure_internal, to provide argp_error and argp_failure 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, 59 insertions, 0 deletions

diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
index 031ee0b38f..dc1ceaae7e 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
@@ -160,6 +160,20 @@ CFLAGS-test-wprintf-chk-redir-ibm128.c += -mabi=ibmlongdouble -Wno-psabi \
 					  -Wno-unused-result
 endif
 
+ifeq ($(subdir),argp)
+ldbl-extra-routines += argp-help
+
+$(objpfx)tst-ieee128-argp.c: tst-ldbl-argp.c
+	cp $< $@
+
+$(objpfx)tst-ibm128-argp.c: tst-ldbl-argp.c
+	cp $< $@
+
+tests-internal += tst-ieee128-argp tst-ibm128-argp
+CFLAGS-tst-ieee128-argp.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
+CFLAGS-tst-ibm128-argp.c += -mabi=ibmlongdouble -Wno-psabi
+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 8b23fdf56f..8e80b2bade 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Versions
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
@@ -180,5 +180,8 @@ libc {
     __vfwscanfieee128;
     __vswscanfieee128;
     __vwscanfieee128;
+
+    __argp_errorieee128;
+    __argp_failureieee128;
   }
 }
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-argp-help.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-argp-help.c
new file mode 100644
index 0000000000..c63e3cd24b
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-argp-help.c
@@ -0,0 +1,42 @@
+/* Wrapper for argp_error and argp_failure.  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 <argp.h>
+#include <libio/libioP.h>
+
+void
+___ieee128_argp_error (const struct argp_state *state, const char *fmt, ...)
+{
+  va_list ap;
+  va_start (ap, fmt);
+  __argp_error_internal (state, fmt, ap, PRINTF_LDBL_USES_FLOAT128);
+  va_end (ap);
+}
+strong_alias (___ieee128_argp_error, __argp_errorieee128)
+
+void
+___ieee128_argp_failure (const struct argp_state *state, int status,
+			int errnum, const char *fmt, ...)
+{
+  va_list ap;
+  va_start (ap, fmt);
+  __argp_failure_internal (state, status, errnum, fmt, ap,
+			   PRINTF_LDBL_USES_FLOAT128);
+  va_end (ap);
+}
+strong_alias (___ieee128_argp_failure, __argp_failureieee128)