ladybird/Meta/debug-kernel.sh
Daniel Bertalan 0f2e18403c Meta: Make serenity.sh gdb work with the Clang toolchain
We now pass along the toolchain type to all subcommands. This ensures
that gdb will load the correct debug information for kernels compiled
with Clang, and the following warning won't appear with the GNU
toolchain:

> WARNING: unknown toolchain 'gdb'. Defaulting to GNU.
>         Valid values are 'Clang', 'GNU' (default)
2022-02-19 11:36:08 +01:00

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#!/bin/sh
SCRIPT_DIR="$(dirname "${0}")"
if [ -z "$SERENITY_ARCH" ]; then
SERENITY_ARCH="i686"
fi
# Set this environment variable to override the default debugger.
#
if [ -z "$SERENITY_KERNEL_DEBUGGER" ]; then
if [ "$SERENITY_ARCH" = "aarch64" ]; then
# Prepend the toolchain aarch64 bin directory so we pick up GDB from there
PATH="$SCRIPT_DIR/../Toolchain/Local/aarch64/bin:$PATH"
SERENITY_KERNEL_DEBUGGER="aarch64-pc-serenity-gdb"
else
SERENITY_KERNEL_DEBUGGER="gdb"
fi
fi
toolchain_suffix=
if [ "$SERENITY_TOOLCHAIN" = "Clang" ]; then
toolchain_suffix="clang"
fi
# The QEMU -s option (enabled by default in ./run) sets up a debugger
# remote on localhost:1234. So point our debugger there, and inform
# the debugger which binary to load symbols, etc from.
#
if [ "$SERENITY_ARCH" = "x86_64" ]; then
gdb_arch=i386:x86-64
prekernel_image=Prekernel64
kernel_base=0x2000200000
elif [ "$SERENITY_ARCH" = "i686" ]; then
gdb_arch=i386:intel
prekernel_image=Prekernel32
kernel_base=0xc0200000
elif [ "$SERENITY_ARCH" = "aarch64" ]; then
gdb_arch=aarch64:armv8-r
prekernel_image=Prekernel
kernel_base=0xc0000000 # FIXME
fi
# FIXME: This doesn't work when running QEMU inside the WSL2 VM
if command -v wslpath >/dev/null; then
gdb_host=$(powershell.exe "(Test-Connection -ComputerName (hostname) -Count 1).IPV4Address.IPAddressToString" | tr -d '\r\n')
else
gdb_host=localhost
fi
exec $SERENITY_KERNEL_DEBUGGER \
-ex "file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}$toolchain_suffix/Kernel/Prekernel/$prekernel_image" \
-ex "set confirm off" \
-ex "directory $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}$toolchain_suffix/" \
-ex "add-symbol-file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}$toolchain_suffix/Kernel/Kernel -o $kernel_base" \
-ex "set confirm on" \
-ex "set arch $gdb_arch" \
-ex "set print frame-arguments none" \
-ex "target remote ${gdb_host}:1234" \
-ex "source $SCRIPT_DIR/serenity_gdb.py" \
-ex "layout asm" \
-ex "fs next" \
"$@"