os/gdbscript at master · sarchar/os · GitHub

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# load symbols
file bin/os.bin
# set the i386 architecture
set arch i386:x86-64:intel
# connect to qemu
target remote localhost:1234
# break on kernel_main
hbreak kernel_main
# run until breakpoint is hit, where we should receive an error

# define a function for ignoring errors
python
def my_ignore_errors(arg):
    try:
        gdb.execute("print \"" + "Executing command: " + arg + "\"")
        gdb.execute (arg)
    except:
        gdb.execute("print \"" + "ERROR: " + arg + "\"")

my_ignore_errors("cont")

# reconnect using a new architecture
gdb.execute("disconnect")
gdb.execute("set arch i386:x86-64")
gdb.execute("target remote localhost:1234")
# one continue here puts us in kernel_main
gdb.execute("cont")

# set some useful breakpoints
gdb.execute("hbreak _interrupt_gpf")
gdb.execute("hbreak _interrupt_page_fault")
gdb.execute("hbreak _interrupt_invalid_op")
gdb.execute("hbreak kernel_panic")