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glibc/SOURCES/glibc-rh1659438-59.patch

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commit a899a5512f618d5c4093a2d65e8dee07c791b0ab
Author: Stefan Liebler <stli@linux.ibm.com>
Date: Fri Mar 22 11:14:08 2019 +0100
S390: Add configure check to detect support for arch13.
Add two configure checks which detect if arch13 is supported
by the assembler at all - by explicitely setting the machine -
and if it is supported with default settings.
ChangeLog:
* config.h.in (HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT,
HAVE_S390_ARCH13_ASM_SUPPORT): New undefine.
* sysdeps/s390/configure.ac: Add checks for arch13 support.
* sysdeps/s390/configure: Regenerated.
diff --git a/config.h.in b/config.h.in
index 422a6036ab16e3b6..f63f6c8442914aa1 100644
--- a/config.h.in
+++ b/config.h.in
@@ -71,6 +71,9 @@
/* Define if assembler supports z13 zarch instructions as default on S390. */
#undef HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
+/* Define if assembler supports arch13 zarch instruction as default on S390. */
+#undef HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT
+
/* Define if assembler supports vector instructions on S390. */
#undef HAVE_S390_VX_ASM_SUPPORT
@@ -78,6 +81,9 @@
on S390. */
#undef HAVE_S390_VX_GCC_SUPPORT
+/* Define if assembler supports arch13 instructions on S390. */
+#undef HAVE_S390_ARCH13_ASM_SUPPORT
+
/* Define if assembler supports Intel MPX. */
#undef HAVE_MPX_SUPPORT
diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure
index 4a44775e3083d8c3..fa46e9e351e37e55 100644
--- a/sysdeps/s390/configure
+++ b/sysdeps/s390/configure
@@ -112,6 +112,43 @@ then
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 arch13 zarch instruction support" >&5
+$as_echo_n "checking for S390 arch13 zarch instruction support... " >&6; }
+if ${libc_cv_asm_s390_arch13+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+ __asm__ (".machine \"arch13\" \n\t"
+ ".machinemode \"zarch_nohighgprs\" \n\t"
+ "lghi %%r0,16 \n\t"
+ "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+ -o conftest.o &> /dev/null'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; } ;
+then
+ libc_cv_asm_s390_arch13=yes
+else
+ libc_cv_asm_s390_arch13=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_s390_arch13" >&5
+$as_echo "$libc_cv_asm_s390_arch13" >&6; }
+if test "$libc_cv_asm_s390_arch13" = yes ;
+then
+ $as_echo "#define HAVE_S390_ARCH13_ASM_SUPPORT 1" >>confdefs.h
+
+fi
+
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 z10 zarch instruction support as default" >&5
$as_echo_n "checking for S390 z10 zarch instruction support as default... " >&6; }
if ${libc_cv_asm_s390_min_z10_zarch+:} false; then :
@@ -225,5 +262,39 @@ then
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for S390 arch13 zarch instruction support as default" >&5
+$as_echo_n "checking for S390 arch13 zarch instruction support as default... " >&6; }
+if ${libc_cv_asm_s390_min_arch13_zarch+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+ __asm__ ("lghi %%r0,16 \n\t"
+ "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+ -o conftest.o &> /dev/null'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; } ;
+then
+ libc_cv_asm_s390_min_arch13_zarch=yes
+else
+ libc_cv_asm_s390_min_arch13_zarch=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_s390_min_arch13_zarch" >&5
+$as_echo "$libc_cv_asm_s390_min_arch13_zarch" >&6; }
+if test "$libc_cv_asm_s390_min_arch13_zarch" = yes ;
+then
+ $as_echo "#define HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT 1" >>confdefs.h
+
+fi
+
test -n "$critic_missing" && as_fn_error $? "
*** $critic_missing" "$LINENO" 5
diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac
index 4dfb5574b49d5949..3ed5a8ef87f9694b 100644
--- a/sysdeps/s390/configure.ac
+++ b/sysdeps/s390/configure.ac
@@ -80,6 +80,32 @@ then
AC_DEFINE(HAVE_S390_VX_GCC_SUPPORT)
fi
+AC_CACHE_CHECK(for S390 arch13 zarch instruction support,
+ libc_cv_asm_s390_arch13, [dnl
+cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+ __asm__ (".machine \"arch13\" \n\t"
+ ".machinemode \"zarch_nohighgprs\" \n\t"
+ "lghi %%r0,16 \n\t"
+ "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+dnl test, if assembler supports S390 arch13 instructions
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+ -o conftest.o &> /dev/null]) ;
+then
+ libc_cv_asm_s390_arch13=yes
+else
+ libc_cv_asm_s390_arch13=no
+fi
+rm -f conftest* ])
+if test "$libc_cv_asm_s390_arch13" = yes ;
+then
+ AC_DEFINE(HAVE_S390_ARCH13_ASM_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
@@ -163,5 +189,28 @@ then
AC_DEFINE(HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT)
fi
+AC_CACHE_CHECK(for S390 arch13 zarch instruction support as default,
+ libc_cv_asm_s390_min_arch13_zarch, [dnl
+cat > conftest.c <<\EOF
+void testinsn (char *buf)
+{
+ __asm__ ("lghi %%r0,16 \n\t"
+ "mvcrl 0(%0),32(%0)" : : "a" (buf) : "memory", "r0");
+}
+EOF
+dnl test, if assembler supports S390 arch13 zarch instructions as default
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS --shared conftest.c
+ -o conftest.o &> /dev/null]) ;
+then
+ libc_cv_asm_s390_min_arch13_zarch=yes
+else
+ libc_cv_asm_s390_min_arch13_zarch=no
+fi
+rm -f conftest* ])
+if test "$libc_cv_asm_s390_min_arch13_zarch" = yes ;
+then
+ AC_DEFINE(HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT)
+fi
+
test -n "$critic_missing" && AC_MSG_ERROR([
*** $critic_missing])
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