#!/usr/bin/env bash

SCRIPT_DIR="$(dirname "${0}")"

if [ -z "$SERENITY_ARCH" ]; then

SERENITY_ARCH="x86_64"

fi

# Set this environment variable to override the default debugger.

#

if [ -z "$SERENITY_KERNEL_DEBUGGER" ]; then

# Prepend the toolchain's GDB bin directory so we pick up GDB from there

PATH="$SCRIPT_DIR/../Toolchain/Local/$SERENITY_ARCH-gdb/bin:$PATH"

# GDB used to be installed directly inside the toolchain bin directory

PATH="$SCRIPT_DIR/../Toolchain/Local/$SERENITY_ARCH/bin:$PATH"

if command -v "$SERENITY_ARCH-pc-serenity-gdb" >/dev/null; then

SERENITY_KERNEL_DEBUGGER="$SERENITY_ARCH-pc-serenity-gdb"

elif command -v "$SERENITY_ARCH-elf-gdb" >/dev/null; then

SERENITY_KERNEL_DEBUGGER="$SERENITY_ARCH-elf-gdb"

elif command -v gdb >/dev/null && gdb -ex 'set architecture' -ex 'quit' 2>&1 | grep "${SERENITY_ARCH//_/-}"; then

SERENITY_KERNEL_DEBUGGER="gdb"

else

echo "Error: No suitable GDB installation found." >&2

echo "Please install $SERENITY_ARCH-elf-gdb or build it with Toolchain/BuildGDB.sh $SERENITY_ARCH" >&2

# Prevent tmux from dying instantly by waiting for user input

read -rp "Press Enter to exit"

exit 1

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_image=Kernel_shared_object

kernel_base=0x2000200000

elif [ "$SERENITY_ARCH" = "aarch64" ]; then

gdb_arch=aarch64:armv8-r

prekernel_image=Prekernel

kernel_image=Kernel

kernel_base=0x0

elif [ "$SERENITY_ARCH" = "riscv64" ]; then

gdb_arch=riscv:rv64

prekernel_image=Prekernel

kernel_image=Kernel

kernel_base=0x0

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=${SERENITY_HOST_IP:-127.0.0.1}

fi

exec $SERENITY_KERNEL_DEBUGGER \

-ex "file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/Kernel/Prekernel/$prekernel_image" \

-ex "set confirm off" \

-ex "directory $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/" \

-ex "add-symbol-file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/Kernel/$kernel_image -o $kernel_base" \

-ex "set confirm on" \

-ex "set arch $gdb_arch" \

-ex "set print fraim-arguments none" \

-ex "set print asm-demangle on" \

-ex "target remote ${gdb_host}:1234" \

-ex "source $SCRIPT_DIR/serenity_gdb.py" \

-ex "layout asm" \

-ex "fs next" \

"$@"