diff options
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/qemu-binfmt-conf.sh | 78 |
1 files changed, 50 insertions, 28 deletions
diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh index 6ef9f11..5fd462b 100755 --- a/scripts/qemu-binfmt-conf.sh +++ b/scripts/qemu-binfmt-conf.sh @@ -144,35 +144,35 @@ loongarch64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x loongarch64_mask='\xff\xff\xff\xff\xff\xff\xff\xfc\x00\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' loongarch64_family=loongarch -qemu_get_family() { - cpu=${HOST_ARCH:-$(uname -m)} +# Converts the name of a host CPU architecture to the corresponding QEMU +# target. +# +# FIXME: This can probably be simplified a lot by dropping most entries. +# Remember that the script is only used on Linux, so we only need to +# handle the strings Linux uses to report the host CPU architecture. +qemu_normalize() { + cpu="$1" case "$cpu" in - amd64|i386|i486|i586|i686|i86pc|BePC|x86_64) + i[3-6]86) echo "i386" ;; - mips*) - echo "mips" + amd64) + echo "x86_64" ;; - "Power Macintosh"|ppc64|powerpc|ppc) + powerpc) echo "ppc" ;; - ppc64el|ppc64le) - echo "ppcle" + ppc64el) + echo "ppc64le" ;; - arm|armel|armhf|arm64|armv[4-9]*l|aarch64) + armel|armhf|armv[4-9]*l) echo "arm" ;; - armeb|armv[4-9]*b|aarch64_be) + armv[4-9]*b) echo "armeb" ;; - sparc*) - echo "sparc" - ;; - riscv*) - echo "riscv" - ;; - loongarch*) - echo "loongarch" + arm64) + echo "aarch64" ;; *) echo "$cpu" @@ -205,6 +205,9 @@ Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] --persistent: if yes, the interpreter is loaded when binfmt is configured and remains in memory. All future uses are cloned from the open file. + --ignore-family: if yes, it is assumed that the host CPU (e.g. riscv64) + can't natively run programs targeting a CPU that is + part of the same family (e.g. riscv32). --preserve-argv0 preserve argv[0] To import templates with update-binfmts, use : @@ -309,7 +312,13 @@ EOF qemu_set_binfmts() { # probe cpu type - host_family=$(qemu_get_family) + host_cpu=$(qemu_normalize ${HOST_ARCH:-$(uname -m)}) + host_family=$(eval echo \$${host_cpu}_family) + + if [ "$host_family" = "" ] ; then + echo "INTERNAL ERROR: unknown host cpu $host_cpu" 1>&2 + exit 1 + fi # register the interpreter for each cpu except for the native one @@ -318,20 +327,28 @@ qemu_set_binfmts() { mask=$(eval echo \$${cpu}_mask) family=$(eval echo \$${cpu}_family) + target="$cpu" + if [ "$cpu" = "i486" ] ; then + target="i386" + fi + + qemu="$QEMU_PATH/qemu-$target$QEMU_SUFFIX" + if [ "$magic" = "" ] || [ "$mask" = "" ] || [ "$family" = "" ] ; then echo "INTERNAL ERROR: unknown cpu $cpu" 1>&2 continue fi - qemu="$QEMU_PATH/qemu-$cpu" - if [ "$cpu" = "i486" ] ; then - qemu="$QEMU_PATH/qemu-i386" + if [ "$host_family" = "$family" ] ; then + # When --ignore-family is used, we have to generate rules even + # for targets that are in the same family as the host CPU. The + # only exception is of course when the CPU types exactly match + if [ "$target" = "$host_cpu" ] || [ "$IGNORE_FAMILY" = "no" ] ; then + continue + fi fi - qemu="$qemu$QEMU_SUFFIX" - if [ "$host_family" != "$family" ] ; then - $BINFMT_SET - fi + $BINFMT_SET done } @@ -346,10 +363,11 @@ CREDENTIAL=no PERSISTENT=no PRESERVE_ARG0=no QEMU_SUFFIX="" +IGNORE_FAMILY=no _longopts="debian,systemd:,qemu-path:,qemu-suffix:,exportdir:,help,credential:,\ -persistent:,preserve-argv0:" -options=$(getopt -o ds:Q:S:e:hc:p:g:F: -l ${_longopts} -- "$@") +persistent:,preserve-argv0:,ignore-family:" +options=$(getopt -o ds:Q:S:e:hc:p:g:F:i: -l ${_longopts} -- "$@") eval set -- "$options" while true ; do @@ -409,6 +427,10 @@ while true ; do shift PRESERVE_ARG0="$1" ;; + -i|--ignore-family) + shift + IGNORE_FAMILY="$1" + ;; *) break ;; |