diff options
Diffstat (limited to 'sysdeps/s390/configure.ac')
| -rw-r--r-- | sysdeps/s390/configure.ac | 29 |
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 |