S390: Add configure check to detect z10 as mininum architecture level set.

Add a configure check for z10 in the same way as done for z196.

ChangeLog:

	* config.h.in (HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT): New undefine.
	* sysdeps/s390/configure.ac: Add check for z10 support.
	* sysdeps/s390/configure: Regenerated.

1 files changed, 29 insertions, 0 deletions

diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac
index 1cdb021282..981f7a79dd 100644
--- a/sysdeps/s390/configure.ac
+++ b/sysdeps/s390/configure.ac
@@ -80,6 +80,35 @@ then
   AC_DEFINE(HAVE_S390_VX_GCC_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
+void testinsn (void *a, void *b, int n)
+{
+    __asm__ ("exrl %2,1f \n\t"
+	     "j 2f \n\t"
+	     "1: mvc 0(1,%0),0(%1) \n\t"
+	     "2:"
+	     : : "a" (a), "a" (b), "d" (n)
+	     : "memory", "cc");
+}
+EOF
+dnl
+dnl test, if assembler supports S390 z10 zarch instructions as default
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+			-o conftest.o &> /dev/null]) ;
+then
+  libc_cv_asm_s390_min_z10_zarch=yes
+else
+  libc_cv_asm_s390_min_z10_zarch=no
+fi
+rm -f conftest* ])
+
+if test "$libc_cv_asm_s390_min_z10_zarch" = yes ;
+then
+  AC_DEFINE(HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT)
+fi
+
 AC_CACHE_CHECK(for S390 z196 zarch instruction support as default,
 	       libc_cv_asm_s390_min_z196_zarch, [dnl
 cat > conftest.c <<\EOF