Connect GDB to a running QEMU instance for Breenix assembly and C debugging.
npx skills add https://github.com/ryanbreen/breenix --skill gdb-attach
Please help me install this Agent Skill. Skill: gdb-attach Source: https://github.com/ryanbreen/breenix/tree/main/breenix-gdb-attach Command: npx skills add https://github.com/ryanbreen/breenix --skill gdb-attach
It enables detailed debugging of Breenix at the assembly and C level, including interrupt and boot sequence analysis, by connecting GDB to a running QEMU instance.
Launch QEMU in GDB mode: BREENIX_GDB=1 cargo run --release --bin qemu-uefi Then connect with: gdb target/x86_64-breenix/release/kernel -ex 'target remote localhost:1234' Or use the helper: breenix-gdb-attach/scripts/connect.py (if present) - optional.
High-intent search queries and answers about installing and using this skill.
Kernel-level assembly debugging with GDB connects to a QEMU instance running in GDB mode. Launch QEMU with BREENIX_GDB=1, then attach GDB to the kernel binary using `target remote localhost:1234`. You can set breakpoints, inspect registers and memory, and step through boot and interrupt sequences.
Yes. GDB attachment enables breakpointing at boot time and during initialization. Connect to QEMU in GDB mode to step through the boot sequence, inspect control flow, and diagnose failures before the kernel fully initializes.
Use GDB to attach to a running kernel instance and step through interrupt entry and context-switch paths. This allows you to inspect registers, memory state, and execution flow at the assembly and C level during interrupt processing.
Yes. GDB connects remotely to QEMU running in GDB mode via localhost:1234. QEMU provides the debugging interface; you launch it with BREENIX_GDB=1 and then connect GDB to the kernel binary.
Yes. Once GDB is attached to the running kernel, you can inspect registers, examine memory contents, and view the call stack. This is useful for diagnosing kernel exceptions and understanding state changes during boot and interrupt handling.
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