qemu-gdb target and script

This commit is contained in:
Silas Boyd-Wickizer 2009-09-15 17:15:36 -04:00
parent c51e175bf0
commit 568bbae801
2 changed files with 41 additions and 2 deletions

28
.gdbinit.tmpl Normal file
View file

@ -0,0 +1,28 @@
set $lastcs = -1
# This fails on Darwin because the default gdb has no ELF support
# echo + symbol-file obj/kern/kernel\n
# symbol-file obj/kern/kernel
define hook-stop
# There doesn't seem to be a good way to detect if we're in 16- or
# 32-bit mode, but in 32-bit mode we always run with CS == 8 in the
# kernel and CS == 35 in user space
if $cs == 8 || $cs == 35
if $lastcs != 8 && $lastcs != 35
set architecture i386
end
x/i $pc
else
if $lastcs == -1 || $lastcs == 8 || $lastcs == 35
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

View file

@ -138,11 +138,22 @@ bochs : fs.img xv6.img
if [ ! -e .bochsrc ]; then ln -s dot-bochsrc .bochsrc; fi if [ ! -e .bochsrc ]; then ln -s dot-bochsrc .bochsrc; fi
bochs -q bochs -q
# try to generate a unique GDB port
GDBPORT = $(shell expr `id -u` % 5000 + 25000)
QEMUOPTS = -smp 2 -hdb fs.img xv6.img
qemu: fs.img xv6.img qemu: fs.img xv6.img
qemu -parallel stdio -smp 2 -hdb fs.img xv6.img qemu -parallel mon:stdio $(QEMUOPTS)
qemutty: fs.img xv6.img qemutty: fs.img xv6.img
qemu -nographic -smp 2 -hdb fs.img xv6.img qemu -nographic $(QEMUOPTS)
.gdbinit: .gdbinit.tmpl
sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
qemu-gdb: fs.img xv6.img .gdbinit
@echo "*** Now run 'gdb'." 1>&2
qemu -parallel mon:stdio $(QEMUOPTS) -s -S -p $(GDBPORT)
# CUT HERE # CUT HERE
# prepare dist for students # prepare dist for students