mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 10:15:57 +01:00
6e9f3dcf23
This lead to an infinite chaing of refactorings: Fix arm and aarch64 lx-symbols This was just by chance, a continue GDB command was needed before running it. I noticed that there is no more need for the x86 GDB --ex 'set arch i386:x86-64:intel' thing and unified all archs. TODO bisect where that was fixed and understand why. Add debug kernel configs for gem5 kernel. Document gem5 aarch64 gdb debug doesn't work. Document tmux split pane action.
89 lines
1.8 KiB
Bash
Executable File
89 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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. common
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after=''
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arch='x86_64'
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before=''
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gem5=false
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lx_symbols="-ex 'lx-symbols ../kernel_module-1.0/'"
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kgdb=false
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while getopts A:a:b:gkL 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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A)
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after="$OPTARG"
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;;
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b)
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before="$OPTARG"
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;;
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g)
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gem5=true
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;;
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k)
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kgdb=true
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;;
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L)
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lx_symbols=''
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;;
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esac
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done
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shift "$(($OPTIND - 1))"
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if [ "$#" -gt 0 ]; then
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brk="-ex 'break ${1}'"
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shift
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else
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brk=''
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fi
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if "$gem5"; then
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port=7000
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else
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port=1234
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fi
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set_common_vars "$arch" "$gem5"
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gdb="${out_dir}/host/usr/bin/${arch}-linux-gdb ${before}"
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cd "${out_dir}/build/linux-custom/"
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if "$kgdb"; then
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cmd="\
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${gdb} \
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-q \
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-ex 'add-auto-load-safe-path $(pwd)' \
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-ex 'file vmlinux' \
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-ex 'target remote localhost:${port}'
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"
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else
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# ## lx-symbols
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#
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# ### lx-symbols after continue
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#
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# lx symbols must be run after continue.
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#
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# running it immediately after the connect on the bootloader leads to failure,
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# likely because kernel structure on which it depends are not yet available.
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#
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# With this setup, continue runs, and lx-symbols only runs when a break happens,
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# either by hitting the breakpoint, or by entering Ctrl + C.
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#
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# Sure, if the user sets a break on a raw address of the bootloader,
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# problems will still arise, but let's think about that some other time.
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#
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# ### lx-symbols autoload
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#
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# The lx-symbols commands gets loaded through the file vmlinux-gdb.py
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# which gets put on the kernel build root when python debugging scripts are enabled.
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cmd="\
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${gdb} \
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-q \
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-ex 'add-auto-load-safe-path $(pwd)' \
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-ex 'file vmlinux' \
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-ex 'target remote localhost:${port}' \
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${brk} \
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-ex 'continue' \
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${lx_symbols} \
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"
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fi
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cmd="$cmd $after"
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echo "$cmd" | tee "${root_dir}/rungdb.log"
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eval "$cmd"
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