[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/s390/configure.ac b/ap/libc/glibc/glibc-2.23/sysdeps/s390/configure.ac
new file mode 100644
index 0000000..4da134e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/s390/configure.ac
@@ -0,0 +1,69 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/s390.
+
+dnl It is always possible to access static and hidden symbols in an
+dnl position independent way.
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
+
+dnl Accept as 2.24 or newer.
+AC_CHECK_PROG_VER(AS, $AS, --version,
+ [GNU assembler.* \([0-9]*\.[0-9.]*\)],
+ [2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], critic_missing="$critic_missing The program AS is required in version >= 2.24 for target S390.")
+
+
+AC_CACHE_CHECK(for __builtin_tbegin, libc_cv_gcc_builtin_tbegin, [dnl
+cat > conftest.c <<\EOF
+#include <htmintrin.h>
+void testtransaction ()
+{
+ if (__builtin_tbegin (0) == _HTM_TBEGIN_STARTED)
+ {
+ __builtin_tend ();
+ }
+}
+EOF
+dnl
+dnl test, if the tbegin instruction is used by __builtin_tbegin
+if AC_TRY_COMMAND([${CC-cc} -mhtm -O2 -S conftest.c -o - | grep -w tbegin > /dev/null]) ;
+then
+ libc_cv_gcc_builtin_tbegin=yes
+else
+ libc_cv_gcc_builtin_tbegin=no
+fi
+rm -f conftest* ])
+
+if test "$enable_lock_elision" = yes && test "$libc_cv_gcc_builtin_tbegin" = no ; then
+ critic_missing="$critic_missing The used GCC has no support for __builtin_tbegin, which is needed for lock-elision on target S390."
+fi
+
+
+AC_CACHE_CHECK(for S390 vector instruction support, libc_cv_asm_s390_vx, [dnl
+cat > conftest.c <<\EOF
+void testvecinsn ()
+{
+ __asm__ (".machine \"z13\" \n\t"
+ ".machinemode \"zarch_nohighgprs\" \n\t"
+ "vistrbs %%v16,%%v17 \n\t"
+ "locghie %%r1,0" : :);
+}
+EOF
+dnl
+dnl test, if assembler supports S390 vector instructions
+if AC_TRY_COMMAND([${CC-cc} --shared conftest.c -o conftest.o &> /dev/null]) ;
+then
+ libc_cv_asm_s390_vx=yes
+else
+ libc_cv_asm_s390_vx=no
+fi
+rm -f conftest* ])
+
+if test "$libc_cv_asm_s390_vx" = yes ;
+then
+ AC_DEFINE(HAVE_S390_VX_ASM_SUPPORT)
+else
+ AC_MSG_WARN([Use binutils with vector-support in order to use optimized implementations.])
+fi
+
+
+test -n "$critic_missing" && AC_MSG_ERROR([
+*** $critic_missing])