[ros-dev] Re: [ros-svn] [ion] 13090: SYSENTER support, INT2E Optimization, new Syscall Table/Stub generator and svn:ignore fixes. Please read associated Mailing List Post.

[Hartmut Birr]

Hi,

the problem is fixed.

- Hartmut

Hartmut Birr schrieb:

> ion at svn.reactos.com schrieb:
>
>> SYSENTER support, INT2E Optimization, new Syscall Table/Stub 
>> generator and svn:ignore fixes. Please read associated Mailing List 
>> Post.
>>
>>
>> Updated files:
>> trunk/reactos/ntoskrnl/ke/i386/gdt.c
>>  
>>
>
> *Modified: trunk/reactos/ntoskrnl/ke/i386/gdt.c*
>
> --- trunk/reactos/ntoskrnl/ke/i386/gdt.c    2005-01-17 01:30:26 UTC 
> (rev 13089)
> +++ trunk/reactos/ntoskrnl/ke/i386/gdt.c    2005-01-17 07:10:34 UTC 
> (rev 13090)
> @@ -40,10 +40,10 @@
>
>  0x0, 0x0, 0x0, 0x0,              /* Null */
>  0xffff, 0x0, 0x9a00, 0xcf,       /* Kernel CS */
>  0xffff, 0x0, 0x9200, 0xcf,       /* Kernel DS */
>
> - 0x0, 0x0, 0xfa00, 0xcc,          /* User CS */
> - 0x0, 0x0, 0xf200, 0xcc,          /* User DS */
>
> + 0x0, 0x0, 0xfa00, 0xcf,          /* User CS */
> + 0x0, 0x0, 0xf200, 0xcf,          /* User DS */
>
>  0x0, 0x0, 0x0, 0x0,              /* TSS */
>
> - 0x1000, 0x0000, 0x9200, 0xff00,  /* PCR */
>
> + 0x1000, 0x0000, 0x9200, 0xffc0,  /* PCR */
>
>  0x1000, 0x0, 0xf200, 0x0,        /* TEB */
>  0x0, 0x0, 0x0, 0x0,              /* Reserved */
>  0x0, 0x0, 0x0, 0x0,              /* LDT */
>
> This changes expand the user mode data/code segment to 4GB. This is 
> wrong. If I change it back to the correct limit, the sysenter support 
> doesn't work. Ros does crash within the first application (smss). See 
> the debug output.
>
> - Hartmut
>
> ...
> DriverBase for \SystemRoot\system32\drivers\msfs.sys: dd2fa000
> DriverBase for \SystemRoot\system32\drivers\npfs.sys: dd319000
> KeBugCheckWithTf at ke/catch.c:193
> Bug detected (code 1e param 0 0 0 0)
>  KMODE_EXCEPTION_NOT_HANDLED
>
> General Protection Exception: 13(0)
> Processor: 0 CS:EIP 8:c0003829 <ntoskrnl.exe: 3829 
> (D:\DOKUME~1\hb\LOKALE~1\Temp/ccG6aaaa.s:33 (_KiSystemService))>
> cr2 7ffde000 cr3 158dc000 Proc: c06a6598 Pid: 2 <smss.exe> Thrd: 
> c06abca0 Tid: 18
> DS 23 ES 23 FS 3b GS 23
> EAX: 00000000   EBX: 00000000   ECX: 00000000
> EDX: 00000000   EBP: 00000000   ESI: 00000000   ESP: dd34cd58
> EDI: 00000000   EFLAGS: 00210202 kESP dd34cd58 kernel stack base dd34a000
> Frames: ke/main.c:1043
>
> 0xc0003829 -> syscall.S line 270
>
>
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