1 files changed, 132 insertions, 0 deletions
diff --git a/qemu/scripts/update-linux-headers.sh b/qemu/scripts/update-linux-headers.sh
new file mode 100755
index 000000000..f0e830c2d
--- /dev/null
+++ b/qemu/scripts/update-linux-headers.sh
@@ -0,0 +1,132 @@
+#!/bin/sh -e
+#
+# Update Linux kernel headers QEMU requires from a specified kernel tree.
+#
+# Copyright (C) 2011 Siemens AG
+#
+# Authors:
+#  Jan Kiszka        <jan.kiszka@siemens.com>
+#
+# This work is licensed under the terms of the GNU GPL version 2.
+# See the COPYING file in the top-level directory.
+
+tmpdir=`mktemp -d`
+linux="$1"
+output="$2"
+
+if [ -z "$linux" ] || ! [ -d "$linux" ]; then
+    cat << EOF
+usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
+
+LINUX_PATH      Linux kernel directory to obtain the headers from
+OUTPUT_PATH     output directory, usually the qemu source tree (default: $PWD)
+EOF
+    exit 1
+fi
+
+if [ -z "$output" ]; then
+    output="$PWD"
+fi
+
+cp_virtio() {
+    from=$1
+    to=$2
+    virtio=$(find "$from" -name '*virtio*h' -o -name "input.h" -o -name "pci_regs.h")
+    if [ "$virtio" ]; then
+        rm -rf "$to"
+        mkdir -p "$to"
+        for f in $virtio; do
+            if
+                grep '#include' "$f" | grep -v -e 'linux/virtio' \
+                                             -e 'linux/types' \
+                                             -e 'linux/if_ether' \
+                                             -e 'sys/' \
+                                             > /dev/null
+            then
+                echo "Unexpected #include in input file $f".
+                exit 2
+            fi
+
+            header=$(basename "$f");
+            sed -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
+                -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
+                -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
+                -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
+                -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
+                -e 's/__bitwise__//' \
+                -e 's/__attribute__((packed))/QEMU_PACKED/' \
+                -e 's/__inline__/inline/' \
+                -e '/sys\/ioctl.h/d' \
+                "$f" > "$to/$header";
+        done
+    fi
+}
+
+# This will pick up non-directories too (eg "Kconfig") but we will
+# ignore them in the next loop.
+ARCHLIST=$(cd "$linux/arch" && echo *)
+
+for arch in $ARCHLIST; do
+    # Discard anything which isn't a KVM-supporting architecture
+    if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
+        ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
+        continue
+    fi
+
+    # Blacklist architectures which have KVM headers but are actually dead
+    if [ "$arch" = "ia64" ]; then
+        continue
+    fi
+
+    make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install
+
+    rm -rf "$output/linux-headers/asm-$arch"
+    mkdir -p "$output/linux-headers/asm-$arch"
+    for header in kvm.h kvm_para.h; do
+        cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
+    done
+    if [ $arch = x86 ]; then
+        cp "$tmpdir/include/asm/hyperv.h" "$output/linux-headers/asm-x86"
+    fi
+    if [ $arch = powerpc ]; then
+        cp "$tmpdir/include/asm/epapr_hcalls.h" "$output/linux-headers/asm-powerpc/"
+    fi
+
+    cp_virtio "$tmpdir/include/asm" "$output/include/standard-headers/asm-$arch"
+done
+
+rm -rf "$output/linux-headers/linux"
+mkdir -p "$output/linux-headers/linux"
+for header in kvm.h kvm_para.h vfio.h vhost.h \
+              psci.h; do
+    cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
+done
+rm -rf "$output/linux-headers/asm-generic"
+mkdir -p "$output/linux-headers/asm-generic"
+for header in kvm_para.h; do
+    cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
+done
+if [ -L "$linux/source" ]; then
+    cp "$linux/source/COPYING" "$output/linux-headers"
+else
+    cp "$linux/COPYING" "$output/linux-headers"
+fi
+
+cat <<EOF >$output/linux-headers/linux/virtio_config.h
+#include "standard-headers/linux/virtio_config.h"
+EOF
+cat <<EOF >$output/linux-headers/linux/virtio_ring.h
+#include "standard-headers/linux/virtio_ring.h"
+EOF
+
+cp_virtio "$tmpdir/include/linux/" "$output/include/standard-headers/linux"
+
+cat <<EOF >$output/include/standard-headers/linux/types.h
+#include <stdint.h>
+#include "qemu/compiler.h"
+EOF
+cat <<EOF >$output/include/standard-headers/linux/if_ether.h
+#define ETH_ALEN    6
+EOF
+
+rm -rf "$tmpdir"