Problems with l4linux

[Valery V. Sedletski]

On Wed, 22 Oct 2008 18:00:04 +1300 (MSD), Valery V. Sedletski wrote:

>
>I unmommented the fragment and recompiled, but an error appeared: 
>
>loader  | vmlinuz26: Starting application using libld-l4.s.so
>loader  | vmlinuz26,#f: Loading binary
>loader  | vmlinuz26,#f: Loading ldso
>loader  | vmlinuz26,#f: Starting libld-l4.s.so at 000138e0 via 0000cbe8
>l4lx    | ======> L4Linux 2.6 starting... <========
>l4lx    | Linux version 2.6.26-l4-svn119-dirty2 (root at localhost) (gcc version 4
>l4lx    : .2.2 20071128 (prerelease) (4.2.2-3mdv2008.0)) #5 Wed Oct 22 15:59:47
>l4lx    :  PETST 2008
>l4lx    | Binary name: vmlinuz26
>l4lx    | Linux kernel command line (8 args): mem=100M video=l4fb:refreshsleep:
>l4lx    : 200 l4fb.nograb=1 load_ramdisk=1 ramdisk_size=40960 root=/dev/ram l4e
>l4lx    : nv_rd=(nd)/tftpboot/drops/ramdisk/drops-fp.rd panicblink=0
>l4lx    | Image: 00400000 - 00854000 [4432 KiB].
>l4lx    | Areas: Text:     00400000 - 0075d000 [3444kB] (a bit longer)
>l4lx    |        Data:     0075d000 - 00782978 [150kB]
>l4lx    |        Initdata: 00786000 - 007bb000 [212kB]
>l4lx    |        BSS:      007bc000 - 0085393c [606kB]
>l4lx    | l4lx_thread_create: Created thread 0f.03 (tamer0)
>l4lx    | Tamer0 is 0f.03
>l4lx    | Using tamed mode.
>ROOT: Sending all ports (for cli/sti) to task #0d
>l4lx    | Got 65536 out of 65536 I/O ports
>l4lx    | L4RM: unknown exception src=F.02 exc=-5 ip=00405afd data=0,0
>con     | vc_loop(): vc[1] running as C.07
>con     | vc[1] 800x600 at 16, bpl:1600, gmode:0x25, evprt:E.03 save:0
>run     | contxt_init(): 800x582, cols:100, lines:41, sb_lines:1041
>

Here is a disassembly around the place of exception:

/home/valerius/src/tudos/l4linux-2.6/arch/l4/kernel/arch-i386/ioport.c:475
  405ae1:       c7 44 24 08 00 00 01    movl   $0x10000,0x8(%esp)
  405ae8:       00
  405ae9:       c7 44 24 04 00 00 01    movl   $0x10000,0x4(%esp)
  405af0:       00
  405af1:       c7 04 24 e9 4f 70 00    movl   $0x704fe9,(%esp)
  405af8:       e8 18 fe 29 00          call   6a5915 <LOG_printf>
/home/valerius/src/tudos/l4linux-2.6/arch/l4/kernel/arch-i386/ioport.c:480
  405afd:        fa                      cli
  405afe:        fb                      sti
  405aff:         eb 9e                jmp    405a9f <l4x_iodb_init+0x8f>
  405b01:       eb 0d                jmp    405b10 <sys_ioperm>
  405b03:       90                     nop
  405b04:       90                     nop
  405b05:       90                     nop
  405b06:       90                     nop

So, 00405afd is the address of cli instruction in the same fragment I uncommented