S390: Add configure check to detect support for arch13.

Add two configure checks which detect if arch13 is supported
by the assembler at all - by explicitely setting the machine -
and if it is supported with default settings.

ChangeLog:

	* config.h.in (HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT,
	HAVE_S390_ARCH13_ASM_SUPPORT): New undefine.
	* sysdeps/s390/configure.ac: Add checks for arch13 support.
	* sysdeps/s390/configure: Regenerated.

4 files changed, 133 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 55b06ad..35237ab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2019-03-22  Stefan Liebler  <stli@linux.ibm.com>
 
+	* config.h.in (HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT,
+	HAVE_S390_ARCH13_ASM_SUPPORT): New undefine.
+	* sysdeps/s390/configure.ac: Add checks for arch13 support.
+	* sysdeps/s390/configure: Regenerated.
+
+2019-03-22  Stefan Liebler  <stli@linux.ibm.com>
+
 	* sysdeps/s390/dl-procinfo.c (_dl_s390_cap_flags):
 	Add vxe2, vxp, dflt, sort flags.
 	* sysdeps/s390/dl-procinfo.h: Add HWCAP_S390_VXRS_EXT2,
diff --git a/config.h.in b/config.h.in
index f059ec0..824dfe8 100644
--- a/config.h.in
+++ b/config.h.in
@@ -71,6 +71,9 @@
 /* Define if assembler supports z13 zarch instructions as default on S390.  */
 #undef  HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
 
+/* Define if assembler supports arch13 zarch instruction as default on S390.  */
+#undef  HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT
+
 /* Define if assembler supports vector instructions on S390.  */
 #undef  HAVE_S390_VX_ASM_SUPPORT
 
@@ -78,6 +81,9 @@
    on S390.  */
 #undef  HAVE_S390_VX_GCC_SUPPORT
 
+/* Define if assembler supports arch13 instructions on S390.  */
+#undef  HAVE_S390_ARCH13_ASM_SUPPORT
+
 /* Define if assembler supports Intel MPX.  */
 #undef  HAVE_MPX_SUPPORT
 
diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure
index 4a44775..fa46e9e 100644
--- a/sysdeps/s390/configure
+++ b/sysdeps/s390/configure
@@ -112,6 +112,43 @@ then
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 arch13 zarch instruction support" >&5
+$as_echo_n "checking for S390 arch13 zarch instruction support... " >&6; }
+if ${libc_cv_asm_s390_arch13+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+    __asm__ (".machine \"arch13\" \n\t"
+	     ".machinemode \"zarch_nohighgprs\" \n\t"
+	     "lghi %%r0,16 \n\t"
+	     "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+			-o conftest.o &> /dev/null'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } ;
+then
+  libc_cv_asm_s390_arch13=yes
+else
+  libc_cv_asm_s390_arch13=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_s390_arch13" >&5
+$as_echo "$libc_cv_asm_s390_arch13" >&6; }
+if test "$libc_cv_asm_s390_arch13" = yes ;
+then
+  $as_echo "#define HAVE_S390_ARCH13_ASM_SUPPORT 1" >>confdefs.h
+
+fi
+
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 z10 zarch instruction support as default" >&5
 $as_echo_n "checking for S390 z10 zarch instruction support as default... " >&6; }
 if ${libc_cv_asm_s390_min_z10_zarch+:} false; then :
@@ -225,5 +262,39 @@ then
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 arch13 zarch instruction support as default" >&5
+$as_echo_n "checking for S390 arch13 zarch instruction support as default... " >&6; }
+if ${libc_cv_asm_s390_min_arch13_zarch+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+    __asm__ ("lghi %%r0,16 \n\t"
+	     "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+			-o conftest.o &> /dev/null'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } ;
+then
+  libc_cv_asm_s390_min_arch13_zarch=yes
+else
+  libc_cv_asm_s390_min_arch13_zarch=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_s390_min_arch13_zarch" >&5
+$as_echo "$libc_cv_asm_s390_min_arch13_zarch" >&6; }
+if test "$libc_cv_asm_s390_min_arch13_zarch" = yes ;
+then
+  $as_echo "#define HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT 1" >>confdefs.h
+
+fi
+
 test -n "$critic_missing" && as_fn_error $? "
 *** $critic_missing" "$LINENO" 5
diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac
index 4dfb557..3ed5a8e 100644
--- a/sysdeps/s390/configure.ac
+++ b/sysdeps/s390/configure.ac
@@ -80,6 +80,32 @@ then
   AC_DEFINE(HAVE_S390_VX_GCC_SUPPORT)
 fi
 
+AC_CACHE_CHECK(for S390 arch13 zarch instruction support,
+	       libc_cv_asm_s390_arch13, [dnl
+cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+    __asm__ (".machine \"arch13\" \n\t"
+	     ".machinemode \"zarch_nohighgprs\" \n\t"
+	     "lghi %%r0,16 \n\t"
+	     "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+dnl test, if assembler supports S390 arch13 instructions
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+			-o conftest.o &> /dev/null]) ;
+then
+  libc_cv_asm_s390_arch13=yes
+else
+  libc_cv_asm_s390_arch13=no
+fi
+rm -f conftest* ])
+if test "$libc_cv_asm_s390_arch13" = yes ;
+then
+  AC_DEFINE(HAVE_S390_ARCH13_ASM_SUPPORT)
+fi
+
+
 AC_CACHE_CHECK(for S390 z10 zarch instruction support as default,
 	       libc_cv_asm_s390_min_z10_zarch, [dnl
 cat > conftest.c <<\EOF
@@ -163,5 +189,28 @@ then
   AC_DEFINE(HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT)
 fi
 
+AC_CACHE_CHECK(for S390 arch13 zarch instruction support as default,
+	       libc_cv_asm_s390_min_arch13_zarch, [dnl
+cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+    __asm__ ("lghi %%r0,16 \n\t"
+	     "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+dnl test, if assembler supports S390 arch13 zarch instructions as default
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+			-o conftest.o &> /dev/null]) ;
+then
+  libc_cv_asm_s390_min_arch13_zarch=yes
+else
+  libc_cv_asm_s390_min_arch13_zarch=no
+fi
+rm -f conftest* ])
+if test "$libc_cv_asm_s390_min_arch13_zarch" = yes ;
+then
+  AC_DEFINE(HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT)
+fi
+
 test -n "$critic_missing" && AC_MSG_ERROR([
 *** $critic_missing])