diff options
Diffstat (limited to 'sysdeps/s390/configure.ac')
| -rw-r--r-- | sysdeps/s390/configure.ac | 55 |
1 files changed, 48 insertions, 7 deletions
diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac index 4da134e9a0..1cdb021282 100644 --- a/sysdeps/s390/configure.ac +++ b/sysdeps/s390/configure.ac @@ -5,12 +5,6 @@ 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="$critic_missing The program AS is required in version >= 2.24 for target S390.") - - AC_CACHE_CHECK(for __builtin_tbegin, libc_cv_gcc_builtin_tbegin, [dnl cat > conftest.c <<\EOF #include <htmintrin.h> @@ -32,7 +26,7 @@ else fi rm -f conftest* ]) -if test "$enable_lock_elision" = yes && test "$libc_cv_gcc_builtin_tbegin" = no ; then +if test "$libc_cv_gcc_builtin_tbegin" = no ; then critic_missing="$critic_missing The used GCC has no support for __builtin_tbegin, which is needed for lock-elision on target S390." fi @@ -64,6 +58,53 @@ else AC_MSG_WARN([Use binutils with vector-support in order to use optimized implementations.]) fi +AC_CACHE_CHECK(for S390 vector support in gcc, libc_cv_gcc_s390_vx, [dnl +cat > conftest.c <<\EOF +void testvecclobber () +{ + __asm__ ("" : : : "v16"); +} +EOF +dnl +dnl test, if gcc supports S390 vector registers as clobber in inline assembly +if AC_TRY_COMMAND([${CC-cc} --shared conftest.c -o conftest.o &> /dev/null]) ; +then + libc_cv_gcc_s390_vx=yes +else + libc_cv_gcc_s390_vx=no +fi +rm -f conftest* ]) + +if test "$libc_cv_gcc_s390_vx" = yes ; +then + AC_DEFINE(HAVE_S390_VX_GCC_SUPPORT) +fi + +AC_CACHE_CHECK(for S390 z196 zarch instruction support as default, + libc_cv_asm_s390_min_z196_zarch, [dnl +cat > conftest.c <<\EOF +float testinsn (double e) +{ + float d; + __asm__ ("ledbra %0,5,%1,4" : "=f" (d) : "f" (e) ); + return d; +} +EOF +dnl +dnl test, if assembler supports S390 z196 zarch instructions as default +if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c + -o conftest.o &> /dev/null]) ; +then + libc_cv_asm_s390_min_z196_zarch=yes +else + libc_cv_asm_s390_min_z196_zarch=no +fi +rm -f conftest* ]) + +if test "$libc_cv_asm_s390_min_z196_zarch" = yes ; +then + AC_DEFINE(HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT) +fi test -n "$critic_missing" && AC_MSG_ERROR([ *** $critic_missing]) |