31 lines
857 B
Cheetah
31 lines
857 B
Cheetah
|
set $lastcs = -1
|
||
|
|
|
||
|
|
define hook-stop
|
||
|
|
# There doesn't seem to be a good way to detect if we're in 16- or
|
||
|
|
# 32-bit mode, but we always run with CS == 8 in 32-bit mode.
|
||
|
|
if $cs == 8 || $cs == 27
|
||
|
|
if $lastcs != 8 && $lastcs != 27
|
||
|
|
set architecture i386
|
||
|
|
end
|
||
|
|
x/i $pc
|
||
|
|
else
|
||
|
|
if $lastcs == -1 || $lastcs == 8 || $lastcs == 27
|
||
|
|
set architecture i8086
|
||
|
|
end
|
||
|
|
# Translate the segment:offset into a physical address
|
||
|
|
printf "[%4x:%4x] ", $cs, $eip
|
||
|
|
x/i $cs*16+$eip
|
||
|
|
end
|
||
|
|
set $lastcs = $cs
|
||
|
|
end
|
||
|
|
|
||
|
|
echo + target remote localhost:1234\n
|
||
|
|
target remote localhost:1234
|
||
|
|
|
||
|
|
# If this fails, it's probably because your GDB doesn't support ELF.
|
||
|
|
# Look at the tools page at
|
||
|
|
# http://pdos.csail.mit.edu/6.828/2009/tools.html
|
||
|
|
# for instructions on building GDB with ELF support.
|
||
|
|
echo + symbol-file obj/kern/kernel\n
|
||
|
|
symbol-file obj/kern/kernel
|