Following is the list of some easy to reproduce bugs in QEMU, perhaps someone will have motivation to fix them:
Preliminary: cvs -d :ext:[EMAIL PROTECTED]:/cvsroot/qemu login cvs -d :ext:[EMAIL PROTECTED]:/cvsroot/qemu co qemu cd qemu ./configure --target-list=i386-softmmu make ====================================================================== DR-DOS EMS Steps: $ wget http://www.boblycat.org/~malc/drdos.fda.bz2 $ bunzip2 drdos.fda.bz2 $ i386-softmmu/qemu -L pc-bios -fda drdos.fda [enter] [enter] C:\>wrms Under other circumstances (without EMS driver, or on MS-DOS 6.2 with or without EMS driver) this thing should just print an error message and exit. With DR-DOSes EMS driver it enters endless exception loop. This issue probably will arise for many non trivial DOS4G/W programs. ====================================================================== Hard Rox demo Steps: $ wget http://www.boblycat.org/~malc/rox.hda.bz2 $ bunzip2 rox.hda.bz2 $ i386-softmmu/qemu -L pc-bios -hda rox.hda [enter] [enter] C:\>cd rox C:\ROX>rox Again an endless do_interrupt loop but this time it's more severe since QEMU never gets around of checking SDL event queue and GUI window is unkillable (by normal means). I would guess it's some sort of MMU emulation fault. This issue probably will arise for many non trivial go32 programs. ====================================================================== ReactOS floppy Steps: Obtain live CD from: http://prdownloads.sourceforge.net/reactos/reactos0.2.6-REL-live.zip?download $ unzip reactos0.2.6-REL-live.zip $ ./qemu-img create test.fda 1440K $ gdb --args i386-softmmu/qemu -L pc-bios -cdrom roslive.iso -fda test.fda Navigate to Start -> Run. In the dialog type: cmd [Make sure to ungrab the mouse] C:\reactos>a: 0x00000000 in ?? () (gdb) bt #0 0x00000000 in ?? () #1 0x0804b727 in qemu_run_timers (ptimer_head=0x8106440, current_time=The value of variable 'current_time' is distributed across several locations, and GDB cannot access its value. ) at /mnt/big/npf/cvs/qemu/qemu-vanilla/vl.c:760 #2 0x0804dbd0 in main_loop_wait (timeout=0) at /mnt/big/npf/cvs/qemu/qemu-vanilla/vl.c:2742 #3 0x0804dcd5 in main_loop () at /mnt/big/npf/cvs/qemu/qemu-vanilla/vl.c:2787 #4 0x0804f33a in main (argc=9, argv=0xbfffefb4) at /mnt/big/npf/cvs/qemu/qemu-vanilla/vl.c:3820 With some other QEMU builds (different build options and so on) i get different back-traces. Something is really fishy here, as if QEMU manages to really screw up memory in host space. I was getting segfaults in code_mem_writel and free. -- mailto:[EMAIL PROTECTED] _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
