S/390 host/target build system support

This patch makes configure aware of S390 hosts and guests. When not explicitly
defined using --target-list= no S390 targets will be built though.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

configure

@@ -183,9 +183,12 @@ case "$cpu" in
   mips*)
     cpu="mips"
   ;;
-  s390*)
+  s390)
     cpu="s390"
   ;;
+  s390x)
+    cpu="s390x"
+  ;;
   sparc|sun4[cdmuv])
     cpu="sparc"
   ;;
@@ -881,7 +884,7 @@ else
 
 # if cross compiling, cannot launch a program, so make a static guess
 case "$cpu" in
-  armv4b|hppa|m68k|mips|mips64|ppc|ppc64|s390|sparc|sparc64)
+  armv4b|hppa|m68k|mips|mips64|ppc|ppc64|s390|s390x|sparc|sparc64)
     bigendian=yes
   ;;
 esac
@@ -891,7 +894,7 @@ fi
 # host long bits test
 hostlongbits="32"
 case "$cpu" in
-  x86_64|alpha|ia64|sparc64|ppc64)
+  x86_64|alpha|ia64|sparc64|ppc64|s390x)
     hostlongbits=64
   ;;
 esac
@@ -1901,7 +1904,7 @@ echo >> $config_host_mak
 echo "CONFIG_QEMU_SHAREDIR=\"$prefix$datasuffix\"" >> $config_host_mak
 
 case "$cpu" in
-  i386|x86_64|alpha|cris|hppa|ia64|m68k|microblaze|mips|mips64|ppc|ppc64|s390|sparc|sparc64)
+  i386|x86_64|alpha|cris|hppa|ia64|m68k|microblaze|mips|mips64|ppc|ppc64|s390|s390x|sparc|sparc64)
     ARCH=$cpu
   ;;
   armv4b|armv4l)
@@ -2188,7 +2191,7 @@ target_arch2=`echo $target | cut -d '-' -f 1`
 target_bigendian="no"
 
 case "$target_arch2" in
-  armeb|m68k|microblaze|mips|mipsn32|mips64|ppc|ppcemb|ppc64|ppc64abi32|sh4eb|sparc|sparc64|sparc32plus)
+  armeb|m68k|microblaze|mips|mipsn32|mips64|ppc|ppcemb|ppc64|ppc64abi32|s390x|sh4eb|sparc|sparc64|sparc32plus)
   target_bigendian=yes
   ;;
 esac
@@ -2356,6 +2359,9 @@ case "$target_arch2" in
     echo "TARGET_ABI32=y" >> $config_target_mak
     target_phys_bits=64
   ;;
+  s390x)
+    target_phys_bits=64
+  ;;
   *)
     echo "Unsupported target CPU"
     exit 1
@@ -2424,7 +2430,7 @@ if test ! -z "$gdb_xml_files" ; then
 fi
 
 case "$target_arch2" in
-  arm|armeb|m68k|microblaze|mips|mipsel|mipsn32|mipsn32el|mips64|mips64el|ppc|ppc64|ppc64abi32|ppcemb|sparc|sparc64|sparc32plus)
+  arm|armeb|m68k|microblaze|mips|mipsel|mipsn32|mipsn32el|mips64|mips64el|ppc|ppc64|ppc64abi32|ppcemb|s390x|sparc|sparc64|sparc32plus)
     echo "CONFIG_SOFTFLOAT=y" >> $config_target_mak
     ;;
   *)
@@ -2457,6 +2463,8 @@ ldflags=""
 
 if test "$ARCH" = "sparc64" ; then
   cflags="-I\$(SRC_PATH)/tcg/sparc $cflags"
+elif test "$ARCH" = "s390x" ; then
+  cflags="-I\$(SRC_PATH)/tcg/s390 $cflags"
 else
   cflags="-I\$(SRC_PATH)/tcg/\$(ARCH) $cflags"
 fi
@@ -2492,7 +2500,7 @@ for i in $ARCH $TARGET_BASE_ARCH ; do
   ppc*)
     echo "CONFIG_PPC_DIS=y"  >> $config_target_mak
   ;;
-  s390)
+  s390*)
     echo "CONFIG_S390_DIS=y"  >> $config_target_mak
   ;;
   sh4)