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Toolchain+Meta: Support kernel debugging with host AArch64 GDB
Previously, we would unconditionally build GDB from source for the AArch64 toolchain. This commit makes it possible to use the system's `gdb` binary if it supports the architecture, or `aarch64-elf-gdb` if such a package is installed. An `aarch64-elf-gdb` package will be available through Homebrew once this PR is merged: https://github.com/Homebrew/homebrew-core/pull/127323
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2 changed files with 32 additions and 14 deletions
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@ -1,4 +1,4 @@
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#!/bin/sh
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#!/usr/bin/env bash
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SCRIPT_DIR="$(dirname "${0}")"
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@ -9,16 +9,18 @@ fi
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# Set this environment variable to override the default debugger.
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#
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if [ -z "$SERENITY_KERNEL_DEBUGGER" ]; then
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if [ "$SERENITY_ARCH" = "aarch64" ]; then
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# Prepend the toolchain aarch64 bin directory so we pick up GDB from there
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PATH="$SCRIPT_DIR/../Toolchain/Local/aarch64/bin:$PATH"
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SERENITY_KERNEL_DEBUGGER="aarch64-pc-serenity-gdb"
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# Prepend the toolchain bin directory so we pick up GDB from there
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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="$SERENITY_ARCH-elf-gdb"
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elif command -v gdb >/dev/null && gdb ex 'set architecture' -ex 'quit' | grep "${SERENITY_ARCH//_/-}"; then
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SERENITY_KERNEL_DEBUGGER="gdb"
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else
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if command -v x86_64-elf-gdb >/dev/null 2>&1; then
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SERENITY_KERNEL_DEBUGGER="x86_64-elf-gdb"
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else
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SERENITY_KERNEL_DEBUGGER=gdb
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fi
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echo "Error: No suitable GDB installation found." >&2
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exit 1
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fi
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fi
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