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commit b8686c0d7098168481a246f8199ab2d865f52d3d
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Author: Stefan Liebler <stli@linux.ibm.com>
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Date: Tue Dec 18 13:57:03 2018 +0100
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S390: Add configure check to detect z10 as mininum architecture level set.
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Add a configure check for z10 in the same way as done for z196.
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ChangeLog:
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* config.h.in (HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT): New undefine.
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* sysdeps/s390/configure.ac: Add check for z10 support.
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* sysdeps/s390/configure: Regenerated.
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diff --git a/config.h.in b/config.h.in
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index 141db213a9046eb4..beecc39d5b8c3f4a 100644
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--- a/config.h.in
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+++ b/config.h.in
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@@ -62,6 +62,9 @@
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/* Define if assembler supports AVX512DQ. */
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#undef HAVE_AVX512DQ_ASM_SUPPORT
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+/* Define if assembler supports z10 zarch instructions as default on S390. */
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+#undef HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT
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+
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/* Define if assembler supports z196 zarch instructions as default on S390. */
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#undef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
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diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure
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index 74b415f2ab0fa982..f30f8644361f474a 100644
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--- a/sysdeps/s390/configure
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+++ b/sysdeps/s390/configure
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@@ -112,6 +112,45 @@ then
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fi
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 z10 zarch instruction support as default" >&5
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+$as_echo_n "checking for S390 z10 zarch instruction support as default... " >&6; }
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+if ${libc_cv_asm_s390_min_z10_zarch+:} false; then :
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+ $as_echo_n "(cached) " >&6
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+else
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+ cat > conftest.c <<\EOF
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+void testinsn (void *a, void *b, int n)
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+{
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+ __asm__ ("exrl %2,1f \n\t"
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+ "j 2f \n\t"
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+ "1: mvc 0(1,%0),0(%1) \n\t"
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+ "2:"
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+ : : "a" (a), "a" (b), "d" (n)
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+ : "memory", "cc");
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+}
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+EOF
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+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
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+ -o conftest.o &> /dev/null'
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+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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+ (eval $ac_try) 2>&5
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+ ac_status=$?
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+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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+ test $ac_status = 0; }; } ;
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+then
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+ libc_cv_asm_s390_min_z10_zarch=yes
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+else
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+ libc_cv_asm_s390_min_z10_zarch=no
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+fi
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+rm -f conftest*
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+fi
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_s390_min_z10_zarch" >&5
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+$as_echo "$libc_cv_asm_s390_min_z10_zarch" >&6; }
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+
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+if test "$libc_cv_asm_s390_min_z10_zarch" = yes ;
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+then
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+ $as_echo "#define HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT 1" >>confdefs.h
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+
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+fi
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+
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 z196 zarch instruction support as default" >&5
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$as_echo_n "checking for S390 z196 zarch instruction support as default... " >&6; }
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if ${libc_cv_asm_s390_min_z196_zarch+:} false; then :
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diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac
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index 1cdb0212825a3f18..981f7a79dd7066fc 100644
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--- a/sysdeps/s390/configure.ac
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+++ b/sysdeps/s390/configure.ac
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@@ -80,6 +80,35 @@ then
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AC_DEFINE(HAVE_S390_VX_GCC_SUPPORT)
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fi
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+AC_CACHE_CHECK(for S390 z10 zarch instruction support as default,
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+ libc_cv_asm_s390_min_z10_zarch, [dnl
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+cat > conftest.c <<\EOF
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+void testinsn (void *a, void *b, int n)
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+{
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+ __asm__ ("exrl %2,1f \n\t"
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+ "j 2f \n\t"
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+ "1: mvc 0(1,%0),0(%1) \n\t"
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+ "2:"
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+ : : "a" (a), "a" (b), "d" (n)
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+ : "memory", "cc");
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+}
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+EOF
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+dnl
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+dnl test, if assembler supports S390 z10 zarch instructions as default
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+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
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+ -o conftest.o &> /dev/null]) ;
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+then
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+ libc_cv_asm_s390_min_z10_zarch=yes
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+else
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+ libc_cv_asm_s390_min_z10_zarch=no
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+fi
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+rm -f conftest* ])
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+
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+if test "$libc_cv_asm_s390_min_z10_zarch" = yes ;
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+then
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+ AC_DEFINE(HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT)
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+fi
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+
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AC_CACHE_CHECK(for S390 z196 zarch instruction support as default,
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libc_cv_asm_s390_min_z196_zarch, [dnl
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cat > conftest.c <<\EOF
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