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Unstuck ..." + # You may replace the following line with the actual location of main script. + bash ./unstuck-cargo-qemu-riscv64-static.sh + fi +done diff --git a/unstuck-cargo-qemu-riscv64-static/unstuck-cargo-qemu-riscv64-static.sh b/unstuck-cargo-qemu-riscv64-static/unstuck-cargo-qemu-riscv64-static.sh new file mode 100644 index 0000000..20bb74e --- /dev/null +++ b/unstuck-cargo-qemu-riscv64-static/unstuck-cargo-qemu-riscv64-static.sh @@ -0,0 +1,26 @@ +#!/bin/bash -e +# Attempt to unstuck cargo/rustc when building via qemu-riscv64-static by updating futex status +## Author: liushuyu +## Maintainer: Camber Huang + +## FIXME: Find a way to locate cargo executed by qemu-riscv64-static +echo "Trying to unstuck qemu emulated cargo ..." +TARGET_PID="$(pgrep cargo | tail -n1)" +if [ -z "$TARGET_PID" ]; then + echo "No cargo process found" + exit 1 +fi + +echo "Found cargo PID: ${TARGET_PID}, tracing ..." +timeout 3 strace -o /tmp/qtrace.log -p "${TARGET_PID}" +UADDR="$(perl -ne '/futex\((.+?),/ && print "$1\n"' < /tmp/qtrace.log)" + +echo "Trying to unlock the futex in ${TARGET_PID} at RVA ${UADDR} ..." +cat << EOF > /tmp/qscript.gdb +set *${UADDR}=0 +quit +EOF + +gdb --batch --command=/tmp/qscript.gdb --pid="${TARGET_PID}" + +rm -v /tmp/qtrace.log /tmp/qscript.gdb