Martin Storsjö
609fe4b81d
For x86 architectures, binutils objcopy and strip can be used as such. For armv7 and aarch64, binutils doesn't recognize the architectures and refuse to touch the files. For most/everything that objcopy/strip do, the actual architecture doesn't really matter though. Therefore, provide a wrapper script and a minimal tool for editing PE executables, that change the architecture from armv7 and aarch64 to i686 and x86_64 respectively before invoking binutils, and change it back afterwards. In case the binutils tools are missing, just return a successful result without doing anything for stripping operations (previously, we had the <triplet>-strip tool symlinked to /bin/true, so this isn't any worse than before) and fail for other objcopy operations.
91 lines
1.8 KiB
Bash
Executable File
91 lines
1.8 KiB
Bash
Executable File
#!/bin/sh
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set -e
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DIR="$(cd "$(dirname "$0")" && pwd)"
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TARGET="$(basename $0 | sed 's/-[^-]*$//')"
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EXE=$(basename $0 | sed 's/.*-\([^-]*\)/\1/')
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ARCH=$(echo $TARGET | sed 's/-.*//')
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IN=""
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OUT=""
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ARGS=""
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STRIP=""
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while [ $# -gt 0 ]; do
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case $1 in
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--strip*|-g|-S)
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STRIP=1
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;;
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-*)
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;;
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*)
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if [ -z "$IN" ]; then
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IN="$1"
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elif [ -z "$OUT" ]; then
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OUT="$1"
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else
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echo Unhandled arg $1
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exit 1
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fi
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;;
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esac
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ARGS="$ARGS $1"
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shift
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done
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if [ -n "$IN" ] && [ -z "$OUT" ]; then
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OUT="$IN"
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fi
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case $ARCH in
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i686|x86_64) COMPAT_ARCH=$ARCH;;
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armv7) COMPAT_ARCH=i686;;
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aarch64) COMPAT_ARCH=x86_64;;
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esac
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convert() {
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if [ "$ARCH" = "$COMPAT_ARCH" ]; then
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return
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fi
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$DIR/change-pe-arch "$@"
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}
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checkstrip() {
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if [ "$EXE" = "strip" ]; then
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return 0
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elif [ -n "$STRIP" ]; then
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if [ "$IN" != "$OUT" ]; then
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cp "$IN" "$OUT"
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fi
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return 0
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else
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return 1
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fi
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}
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if [ "$ARCH" != "$COMPAT_ARCH" ] && ! $DIR/change-pe-arch -check "$IN"; then
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if checkstrip; then
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echo Ignoring strip of non-executable \(object file\?\) >&2
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exit 0
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else
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echo Unsupported "$0 $ARGS", not supported for non-executable \(object file\?\) >&2
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exit 1
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fi
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fi
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if [ -x $DIR/binutils-$EXE ]; then
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convert -from $ARCH -to $COMPAT_ARCH "$IN"
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$DIR/binutils-$EXE $ARGS
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convert -from $COMPAT_ARCH -to $ARCH "$OUT"
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if [ "$OUT" != "$IN" ]; then
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convert -from $COMPAT_ARCH -to $ARCH "$IN"
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fi
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else
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if checkstrip; then
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echo Ignoring strip, missing binutils-$EXE >&2
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exit 0
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else
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echo Unsupported "$0 $ARGS", missing binutils-$EXE >&2
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exit 1
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fi
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fi
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