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https://github.com/cirosantilli/linux-kernel-module-cheat.git
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9fd72c786f
Most of it was present inside buildroot/output.* and the rest scattered
on top level.
This came about for the n-th time when we were reviewing QEMU trace file
locations.
On one hand, it would be cool to have per arch traces.
This made buildroot/output.${arch}~/ a natural choice.
But on the other, those traces have nothing to do with Buildroot,
and could potentially interfere with Buildroot build files.
It also feels nicer to have buildroot/ pristine source code only,
and keep all output under a single directory out/
24 lines
1018 B
Bash
Executable File
24 lines
1018 B
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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. common
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arch=x86_64
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while getopts a: OPT; do
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case "$OPT" in
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a)
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arch="$OPTARG"
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;;
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esac
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done
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set_common_vars "$arch" false
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time ./run -a "$arch" -e 'init=/poweroff.out' -T exec_tb
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time ./qemu/scripts/simpletrace.py "${build_dir}/host-qemu-custom/trace-events-all" "${qemu_out_dir}/trace.bin" >"${qemu_out_dir}/trace.txt"
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# Instruction count.
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# We could put this on a separate script, but it just adds more arch boilerplate to a new script.
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# So let's just leave it here for now since it did not add a significant processing time.
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echo "instruction count all: $(wc -l "${qemu_out_dir}/trace.txt" | cut -d' ' -f1)"
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entry_addr=$("${host_dir}"/bin/*-buildroot-*-readelf -h "${build_dir}/linux-custom/vmlinux" | grep 'Entry point address' | sed -E 's/.*: *//')
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echo "entry address: ${entry_addr}"
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sed "/${entry_addr}/q" "${qemu_out_dir}/trace.txt" >"${qemu_out_dir}/trace-boot.txt"
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echo "instruction count firmware: $(wc -l "${qemu_out_dir}/trace-boot.txt" | cut -d' ' -f1)"
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