mirror of
https://gitlab.com/qemu-project/qemu
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3efc75ad9d
We are reusing the same temporary directory for installing the headers of all targets, so there could be stale files here when switching from one target to another. Make sure to delete the folder before installing a new set of target headers into it. Message-ID: <20240527060243.12647-1-thuth@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
245 lines
9.5 KiB
Bash
Executable file
245 lines
9.5 KiB
Bash
Executable file
#!/bin/sh -e
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#
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# Update Linux kernel headers QEMU requires from a specified kernel tree.
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#
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# Copyright (C) 2011 Siemens AG
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#
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# Authors:
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# Jan Kiszka <jan.kiszka@siemens.com>
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#
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# This work is licensed under the terms of the GNU GPL version 2.
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# See the COPYING file in the top-level directory.
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#
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# The script will copy the headers into two target folders:
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#
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# - linux-headers/ for files that are required for compiling for a
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# Linux host. Generally we have these so we can use kernel structs
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# and defines that are more recent than the headers that might be
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# installed on the host system. Usually this script can do simple
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# file copies for these headers.
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#
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# - include/standard-headers/ for files that are used for guest
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# device emulation and are required on all hosts. For instance, we
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# get our definitions of the virtio structures from the Linux
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# kernel headers, but we need those definitions regardless of which
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# host OS we are building for. This script has to be careful to
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# sanitize the headers to remove any use of Linux-specifics such as
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# types like "__u64". This work is done in the cp_portable function.
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tmpdir=$(mktemp -d)
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hdrdir="$tmpdir/headers"
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blddir="$tmpdir/build"
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linux="$1"
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output="$2"
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if [ -z "$linux" ] || ! [ -d "$linux" ]; then
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cat << EOF
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usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
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LINUX_PATH Linux kernel directory to obtain the headers from
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OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD)
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EOF
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exit 1
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fi
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if [ -z "$output" ]; then
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output="$PWD"
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fi
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cp_portable() {
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f=$1
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to=$2
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if
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grep '#include' "$f" | grep -v -e 'linux/virtio' \
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-e 'linux/types' \
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-e 'linux/ioctl' \
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-e 'stdint' \
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-e 'linux/if_ether' \
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-e 'input-event-codes' \
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-e 'sys/' \
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-e 'drm.h' \
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-e 'limits' \
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-e 'linux/const' \
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-e 'linux/kernel' \
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-e 'linux/sysinfo' \
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-e 'asm/setup_data.h' \
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> /dev/null
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then
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echo "Unexpected #include in input file $f".
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exit 2
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fi
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header=$(basename "$f");
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sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \
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-e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/u\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
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-e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \
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-e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
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-e 's/<asm\/\([^>]*\)>/"standard-headers\/asm-'$arch'\/\1"/' \
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-e 's/__bitwise//' \
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-e 's/__attribute__((packed))/QEMU_PACKED/' \
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-e 's/__inline__/inline/' \
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-e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \
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-e '/\"drm.h\"/d' \
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-e '/sys\/ioctl.h/d' \
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-e '/linux\/ioctl.h/d' \
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-e 's/SW_MAX/SW_MAX_/' \
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-e 's/atomic_t/int/' \
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-e 's/__kernel_long_t/long/' \
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-e 's/__kernel_ulong_t/unsigned long/' \
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-e 's/struct ethhdr/struct eth_header/' \
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-e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \
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"$f" > "$to/$header";
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}
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# This will pick up non-directories too (eg "Kconfig") but we will
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# ignore them in the next loop.
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ARCHLIST=$(cd "$linux/arch" && echo *)
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for arch in $ARCHLIST; do
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# Discard anything which isn't a KVM-supporting architecture
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if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
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! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
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continue
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fi
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if [ "$arch" = x86 ]; then
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arch_var=SRCARCH
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else
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arch_var=ARCH
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fi
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rm -rf "$hdrdir"
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make -C "$linux" O="$blddir" INSTALL_HDR_PATH="$hdrdir" $arch_var=$arch headers_install
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rm -rf "$output/linux-headers/asm-$arch"
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mkdir -p "$output/linux-headers/asm-$arch"
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for header in kvm.h unistd.h bitsperlong.h mman.h; do
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cp "$hdrdir/include/asm/$header" "$output/linux-headers/asm-$arch"
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done
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if [ $arch = mips ]; then
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cp "$hdrdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/"
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cp "$hdrdir/include/asm/unistd_o32.h" "$output/linux-headers/asm-mips/"
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cp "$hdrdir/include/asm/unistd_n32.h" "$output/linux-headers/asm-mips/"
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cp "$hdrdir/include/asm/unistd_n64.h" "$output/linux-headers/asm-mips/"
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fi
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if [ $arch = powerpc ]; then
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cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-powerpc/"
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cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-powerpc/"
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fi
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rm -rf "$output/include/standard-headers/asm-$arch"
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mkdir -p "$output/include/standard-headers/asm-$arch"
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if [ $arch = s390 ]; then
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cp_portable "$hdrdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
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cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/"
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cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/"
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fi
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if [ $arch = arm ]; then
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cp "$hdrdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/"
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cp "$hdrdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/"
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cp "$hdrdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/"
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fi
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if [ $arch = arm64 ]; then
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cp "$hdrdir/include/asm/sve_context.h" "$output/linux-headers/asm-arm64/"
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fi
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if [ $arch = x86 ]; then
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cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"
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cp "$hdrdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/"
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cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/"
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cp_portable "$hdrdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch"
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# Remove everything except the macros from bootparam.h avoiding the
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# unnecessary import of several video/ist/etc headers
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sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \
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"$hdrdir/include/asm/bootparam.h" > "$hdrdir/bootparam.h"
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cp_portable "$hdrdir/bootparam.h" \
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"$output/include/standard-headers/asm-$arch"
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cp_portable "$hdrdir/include/asm/setup_data.h" \
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"$output/standard-headers/asm-x86"
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fi
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if [ $arch = riscv ]; then
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cp "$hdrdir/include/asm/ptrace.h" "$output/linux-headers/asm-riscv/"
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fi
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done
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arch=
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rm -rf "$output/linux-headers/linux"
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mkdir -p "$output/linux-headers/linux"
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for header in const.h stddef.h kvm.h vfio.h vfio_ccw.h vfio_zdev.h vhost.h \
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psci.h psp-sev.h userfaultfd.h memfd.h mman.h nvme_ioctl.h \
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vduse.h iommufd.h bits.h; do
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cp "$hdrdir/include/linux/$header" "$output/linux-headers/linux"
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done
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rm -rf "$output/linux-headers/asm-generic"
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mkdir -p "$output/linux-headers/asm-generic"
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for header in unistd.h bitsperlong.h mman-common.h mman.h hugetlb_encode.h; do
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cp "$hdrdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
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done
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if [ -L "$linux/source" ]; then
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cp "$linux/source/COPYING" "$output/linux-headers"
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else
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cp "$linux/COPYING" "$output/linux-headers"
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fi
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# Recent kernel sources split the copyright/license info into multiple
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# files, which we need to copy. This set of licenses is the set that
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# are referred to by SPDX lines in the headers we currently copy.
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# We don't copy the Documentation/process/license-rules.rst which
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# is also referred to by COPYING, since it's explanatory rather than license.
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if [ -d "$linux/LICENSES" ]; then
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mkdir -p "$output/linux-headers/LICENSES/preferred" \
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"$output/linux-headers/LICENSES/exceptions"
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for l in preferred/GPL-2.0 preferred/BSD-2-Clause preferred/BSD-3-Clause \
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exceptions/Linux-syscall-note; do
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cp "$linux/LICENSES/$l" "$output/linux-headers/LICENSES/$l"
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done
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fi
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cat <<EOF >$output/linux-headers/linux/virtio_config.h
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#include "standard-headers/linux/virtio_config.h"
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EOF
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cat <<EOF >$output/linux-headers/linux/virtio_ring.h
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#include "standard-headers/linux/virtio_ring.h"
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EOF
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cat <<EOF >$output/linux-headers/linux/vhost_types.h
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#include "standard-headers/linux/vhost_types.h"
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EOF
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rm -rf "$output/include/standard-headers/linux"
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mkdir -p "$output/include/standard-headers/linux"
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for i in "$hdrdir"/include/linux/*virtio*.h \
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"$hdrdir/include/linux/qemu_fw_cfg.h" \
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"$hdrdir/include/linux/fuse.h" \
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"$hdrdir/include/linux/input.h" \
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"$hdrdir/include/linux/input-event-codes.h" \
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"$hdrdir/include/linux/udmabuf.h" \
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"$hdrdir/include/linux/pci_regs.h" \
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"$hdrdir/include/linux/ethtool.h" \
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"$hdrdir/include/linux/const.h" \
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"$hdrdir/include/linux/kernel.h" \
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"$hdrdir/include/linux/vhost_types.h" \
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"$hdrdir/include/linux/sysinfo.h" \
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"$hdrdir/include/misc/pvpanic.h"; do
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cp_portable "$i" "$output/include/standard-headers/linux"
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done
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mkdir -p "$output/include/standard-headers/drm"
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cp_portable "$hdrdir/include/drm/drm_fourcc.h" \
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"$output/include/standard-headers/drm"
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cat <<EOF >$output/include/standard-headers/linux/types.h
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/* For QEMU all types are already defined via osdep.h, so this
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* header does not need to do anything.
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*/
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EOF
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cat <<EOF >$output/include/standard-headers/linux/if_ether.h
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#define ETH_ALEN 6
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EOF
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rm -rf "$tmpdir"
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