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https://github.com/LadybirdBrowser/ladybird.git
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3e32fb911e
The analyze-qemu-coverage.sh script cracks open the _disk_image for the given SERENITY_ARCH and SERENITY_TOOLCHAIN and extracts llvm profile data into a local directory owned by the current user. It then calls a coverage artifact script from llvm to create a nice html report for all the source files referenced by the profile data files. We currently grab a script from llvm via wget. In the future a custom script to call llvm-cov and llvm-profdata should probably be used.
74 lines
3 KiB
Bash
Executable file
74 lines
3 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -eo pipefail
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SCRIPT_DIR="$(dirname "${0}")"
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if [ -z "$SERENITY_ARCH" ]; then
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SERENITY_ARCH="i686"
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fi
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toolchain_suffix=
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if [ "$SERENITY_TOOLCHAIN" = "Clang" ]; then
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toolchain_suffix="clang"
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fi
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BUILD_DIR="${SCRIPT_DIR}/../Build/${SERENITY_ARCH}${toolchain_suffix}"
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TEMP_PROFDATA="$BUILD_DIR/tmp_profile_data"
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mkdir -p "$TEMP_PROFDATA"
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mkdir -p "$BUILD_DIR/mnt"
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[ -z "${ELEVATE+x}" ] && ELEVATE="sudo"
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echo "ELEVATE is $ELEVATE"
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echo "[ELEVATED] Mounting _disk_image into $BUILD_DIR/mnt, this requires elevated privileges..."
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"$ELEVATE" mount "$BUILD_DIR/_disk_image" "$BUILD_DIR/mnt"
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echo "[ELEVATED] Copying profile data files out of $BUILD_DIR/mnt, this requires elevated privileges..."
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"$ELEVATE" cp -r "$BUILD_DIR/mnt/home/anon/profiles" "$TEMP_PROFDATA/"
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echo "[ELEVATED] Unmounting _disk_image, this requires elevated privileges..."
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"$ELEVATE" umount "$BUILD_DIR/mnt"
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echo "[ELEVATED] Making sure profile data files are owned by the current user, this requires elevated privileges..."
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"$ELEVATE" chown -R "$(id -u)":"$(id -g)" "$TEMP_PROFDATA/"
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echo "Moving profile data into $TEMP_PROFDATA directly..."
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mv "$TEMP_PROFDATA"/profiles/* "$TEMP_PROFDATA/"
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echo "Discovering all binaries and shared libraries in $BUILD_DIR/Root"
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# shellcheck disable=SC2156 # The recommended fix on the Shellcheck github page for this warning causes the script to not find any files at all
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mapfile -d '\n' all_binaries < <(find "$BUILD_DIR"/Root -type f -exec sh -c "file {} | grep -vi relocatable | grep -Eiq ': elf (32|64)-bit'" \; -print | grep -Ev '(usr\/Tests|usr\/local|boot\/|Loader.so)')
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# FIXME: Come up with our own coverage prep script instead of using llvm's
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COVERAGE_PREPARE="$BUILD_DIR/prepare-code-coverage-artifact.py"
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if [ ! -f "$COVERAGE_PREPARE" ]; then
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# Download coverage prep script from github
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LLVM_14_RELEASE_HASH=329fda39c507e8740978d10458451dcdb21563be
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SHA256_SUM=2cf1019d1df9a10c87234e0ec9c984dbb97d5543688b7f4a7387cb377ced7f21
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URL=https://raw.githubusercontent.com/llvm/llvm-project/${LLVM_14_RELEASE_HASH}/llvm/utils/prepare-code-coverage-artifact.py
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echo "Downloading prepare-code-coverage-artifact.py from ${URL}"
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wget "$URL" -P "$BUILD_DIR"
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# Verify hash matches for integrity
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echo "Expecting sha256sum: $SHA256_SUM"
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CALC_SUM="$(sha256sum "${COVERAGE_PREPARE}" | cut -f1 -d' ')"
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echo "sha256sum($COVERAGE_PREPARE) = '$CALC_SUM'"
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if [ "$CALC_SUM" != "$SHA256_SUM" ]; then
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# remove downloaded file to re-download on next run
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rm -f "$COVERAGE_PREPARE"
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echo "sha256sums mismatching, removed erroneous download. Please re-try."
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exit 1
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fi
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fi
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CLANG_BINDIR="${SCRIPT_DIR}/../Toolchain/Local/clang/bin"
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# shellcheck disable=SC2128,SC2086 # all_binaries variable needs expanded to space separated string, not newline separated string
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python3 "$COVERAGE_PREPARE" \
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--unified-report \
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-C "$SCRIPT_DIR/.." \
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"$CLANG_BINDIR/llvm-profdata" "$CLANG_BINDIR/llvm-cov" \
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"$TEMP_PROFDATA/" \
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"$BUILD_DIR/reports/" \
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$all_binaries
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