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5ca1bd55a0
Target GDB is only used for debugging the kernel, which is not relevant
to most people. Starting with 924758c6f8, GDB would always be built
as part of the toolchain if the user didn't have it installed. This is
unnecessary.
This commit adds a separate script for building GDB, which the user
needs to explicitly invoke. A message is added to Meta/debug-kernel.sh
which alerts the user to this fact.
72 lines
2.7 KiB
Bash
Executable file
72 lines
2.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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SCRIPT_DIR="$(dirname "${0}")"
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if [ -z "$SERENITY_ARCH" ]; then
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SERENITY_ARCH="x86_64"
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fi
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# Set this environment variable to override the default debugger.
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#
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if [ -z "$SERENITY_KERNEL_DEBUGGER" ]; then
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# Prepend the toolchain's GDB bin directory so we pick up GDB from there
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PATH="$SCRIPT_DIR/../Toolchain/Local/$SERENITY_ARCH-gdb/bin:$PATH"
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# GDB used to be installed directly inside the toolchain bin directory
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PATH="$SCRIPT_DIR/../Toolchain/Local/$SERENITY_ARCH/bin:$PATH"
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if command -v "$SERENITY_ARCH-pc-serenity-gdb" >/dev/null; then
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SERENITY_KERNEL_DEBUGGER="$SERENITY_ARCH-pc-serenity-gdb"
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elif command -v "$SERENITY_ARCH-elf-gdb" >/dev/null; then
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SERENITY_KERNEL_DEBUGGER="$SERENITY_ARCH-elf-gdb"
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elif command -v gdb >/dev/null && gdb -ex 'set architecture' -ex 'quit' 2>&1 | grep "${SERENITY_ARCH//_/-}"; then
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SERENITY_KERNEL_DEBUGGER="gdb"
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else
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echo "Error: No suitable GDB installation found." >&2
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echo "Please install $SERENITY_ARCH-elf-gdb or build it with Toolchain/BuildGDB.sh $SERENITY_ARCH" >&2
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# Prevent tmux from dying instantly by waiting for user input
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read -rp "Press Enter to exit"
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exit 1
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fi
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fi
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toolchain_suffix=
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if [ "$SERENITY_TOOLCHAIN" = "Clang" ]; then
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toolchain_suffix="clang"
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fi
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# The QEMU -s option (enabled by default in ./run) sets up a debugger
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# remote on localhost:1234. So point our debugger there, and inform
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# the debugger which binary to load symbols, etc from.
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#
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if [ "$SERENITY_ARCH" = "x86_64" ]; then
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gdb_arch=i386:x86-64
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prekernel_image=Prekernel64
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kernel_base=0x2000200000
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elif [ "$SERENITY_ARCH" = "aarch64" ]; then
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gdb_arch=aarch64:armv8-r
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prekernel_image=Prekernel
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kernel_base=0x0
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fi
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# FIXME: This doesn't work when running QEMU inside the WSL2 VM
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if command -v wslpath >/dev/null; then
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gdb_host=$(powershell.exe "(Test-Connection -ComputerName (hostname) -Count 1).IPV4Address.IPAddressToString" | tr -d '\r\n')
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else
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gdb_host=${SERENITY_HOST_IP:-127.0.0.1}
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fi
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exec $SERENITY_KERNEL_DEBUGGER \
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-ex "file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/Kernel/Prekernel/$prekernel_image" \
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-ex "set confirm off" \
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-ex "directory $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/" \
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-ex "add-symbol-file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/Kernel/Kernel -o $kernel_base" \
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-ex "set confirm on" \
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-ex "set arch $gdb_arch" \
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-ex "set print frame-arguments none" \
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-ex "set print asm-demangle on" \
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-ex "target remote ${gdb_host}:1234" \
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-ex "source $SCRIPT_DIR/serenity_gdb.py" \
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-ex "layout asm" \
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-ex "fs next" \
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"$@"
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