Re: [Qemu-devel] [PATCH 18/18] configure: Allow x32 as a host

[Aurelien Jarno]

On Thu, Aug 22, 2013 at 09:58:49AM -0700, Richard Henderson wrote:
> Signed-off-by: Richard Henderson <address@hidden>
> ---
>  configure | 27 ++++++++++++++++++---------
>  1 file changed, 18 insertions(+), 9 deletions(-)
> 
> diff --git a/configure b/configure
> index 18fa608..c0aee9d 100755
> --- a/configure
> +++ b/configure
> @@ -362,7 +362,11 @@ if test ! -z "$cpu" ; then
>  elif check_define __i386__ ; then
>    cpu="i386"
>  elif check_define __x86_64__ ; then
> -  cpu="x86_64"
> +  if check_define __ILP32__ ; then
> +    cpu="x32"
> +  else
> +    cpu="x86_64"
> +  fi
>  elif check_define __sparc__ ; then
>    if check_define __arch64__ ; then
>      cpu="sparc64"
> @@ -399,7 +403,7 @@ ARCH=
>  # Normalise host CPU name and set ARCH.
>  # Note that this case should only have supported host CPUs, not guests.
>  case "$cpu" in
> -  ia64|ppc|ppc64|s390|s390x|sparc64)
> +  ia64|ppc|ppc64|s390|s390x|sparc64|x32)
>      cpu="$cpu"
>    ;;
>    i386|i486|i586|i686|i86pc|BePC)
> @@ -550,7 +554,7 @@ Haiku)
>    kvm="yes"
>    vhost_net="yes"
>    vhost_scsi="yes"
> -  if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then
> +  if [ "$cpu" = "i386" -o "$cpu" = "x86_64" -o "$cpu" = "x32" ] ; then
>      audio_possible_drivers="$audio_possible_drivers fmod"
>    fi
>    QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers 
> $QEMU_INCLUDES"
> @@ -977,6 +981,11 @@ case "$cpu" in
>             LDFLAGS="-m64 $LDFLAGS"
>             cc_i386='$(CC) -m32'
>             ;;
> +    x32)
> +           CPU_CFLAGS="-mx32"
> +           LDFLAGS="-mx32 $LDFLAGS"
> +           cc_i386='$(CC) -m32'
> +           ;;
>      # No special flags required for other host CPUs
>  esac
>  
> @@ -1251,7 +1260,7 @@ fi
>  
>  if test "$pie" = ""; then
>    case "$cpu-$targetos" in
> -    i386-Linux|x86_64-Linux|i386-OpenBSD|x86_64-OpenBSD)
> +    i386-Linux|x86_64-Linux|x32-Linux|i386-OpenBSD|x86_64-OpenBSD)
>        ;;
>      *)
>        pie="no"
> @@ -3475,7 +3484,7 @@ fi
>  if test "$pie" = "no" ; then
>    textseg_addr=
>    case "$cpu" in
> -    arm | hppa | i386 | m68k | ppc | ppc64 | s390* | sparc | sparc64 | 
> x86_64)
> +    arm | hppa | i386 | m68k | ppc | ppc64 | s390* | sparc | sparc64 | 
> x86_64 | x32)
>        textseg_addr=0x60000000
>        ;;
>      mips)
> @@ -3650,7 +3659,7 @@ echo "libs_softmmu=$libs_softmmu" >> $config_host_mak
>  echo "ARCH=$ARCH" >> $config_host_mak
>  
>  case "$cpu" in
> -  arm|i386|x86_64|ppc|aarch64)
> +  arm|i386|x86_64|x32|ppc|aarch64)
>      # The TCG interpreter currently does not support ld/st optimization.
>      if test "$tcg_interpreter" = "no" ; then
>          echo "CONFIG_QEMU_LDST_OPTIMIZATION=y" >> $config_host_mak
> @@ -4079,7 +4088,7 @@ elif test "$ARCH" = "sparc64" ; then
>    QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/sparc $QEMU_INCLUDES"
>  elif test "$ARCH" = "s390x" ; then
>    QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/s390 $QEMU_INCLUDES"
> -elif test "$ARCH" = "x86_64" ; then
> +elif test "$ARCH" = "x86_64" -o "$ARCH" = "x32" ; then
>    QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/i386 $QEMU_INCLUDES"
>  else
>    QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/\$(ARCH) $QEMU_INCLUDES"
> @@ -4141,7 +4150,7 @@ fi
>  if test "$linux" = "yes" ; then
>    mkdir -p linux-headers
>    case "$cpu" in
> -  i386|x86_64)
> +  i386|x86_64|x32)
>      linux_arch=x86
>      ;;
>    ppcemb|ppc|ppc64)
> @@ -4407,7 +4416,7 @@ for i in $ARCH $TARGET_BASE_ARCH ; do
>      echo "CONFIG_HPPA_DIS=y"  >> $config_target_mak
>      echo "CONFIG_HPPA_DIS=y"  >> config-all-disas.mak
>    ;;
> -  i386|x86_64)
> +  i386|x86_64|x32)
>      echo "CONFIG_I386_DIS=y"  >> $config_target_mak
>      echo "CONFIG_I386_DIS=y"  >> config-all-disas.mak

Reviewed-by: Aurelien Jarno <address@hidden>

-- 
Aurelien Jarno                          GPG: 1024D/F1BCDB73
address@hidden                 http://www.aurel32.net