From 58115dc00010269322dc8c62ca7172fa06280e2c Mon Sep 17 00:00:00 2001
From: Jacek Galowicz <galowicz@lfbs.rwth-aachen.de>
Date: Mon, 16 May 2011 13:26:49 +0200
Subject: [PATCH] New Makefile target: qemudbg

This target starts qemu in Debug-Mode and GDB.
There is a GDB-Script file script.gdb which is extensible to match your
debugging needs.
---
 Makefile.example | 9 +++++++++
 script.gdb       | 7 +++++++
 2 files changed, 16 insertions(+)
 create mode 100644 script.gdb

diff --git a/Makefile.example b/Makefile.example
index 1614b2ff..554c241d 100644
--- a/Makefile.example
+++ b/Makefile.example
@@ -19,6 +19,8 @@ RANLIB_FOR_TARGET=ranlib
 STRIP_FOR_TARGET=strip
 READELF_FOR_TARGET=readelf
 NASM = nasm
+EMU=qemu
+GDB=gdb
 
 MAKE = make
 NASMFLAGS = -felf32 -g
@@ -71,6 +73,13 @@ $(NAME).elf:
 qemu: newlib tools $(NAME).elf
 	qemu -smp 2 -net nic,model=rtl8139 -net user,hostfwd=tcp::12345-:7 -net dump -kernel metalsvm.elf -initrd tools/initrd.img
 
+qemudbg: newlib tools $(NAME).elf
+	qemu -S -s -smp 2 -net nic,model=rtl8139 -net user,hostfwd=tcp::12345-:7 -net dump -kernel metalsvm.elf -initrd tools/initrd.img
+
+gdb: $(NAME).elf
+	make qemudbg > /dev/null &
+	$(GDB) -x script.gdb
+
 clean:
 	$Q$(RM) $(NAME).elf $(NAME).sym *~
 	$Q$(MAKE) -C tools clean
diff --git a/script.gdb b/script.gdb
new file mode 100644
index 00000000..644bde95
--- /dev/null
+++ b/script.gdb
@@ -0,0 +1,7 @@
+# Constant part of the script
+symbol-file metalsvm.sym
+target remote localhost:1234
+
+# Configure breakpoints and everything as you wish here.
+break main
+continue