privileged instruction in 32-bit code

[Tyler Nielsen]

Peter Beutner wrote:

>Tyler Nielsen schrieb:
>  
>
>>Ivan Leo Puoti wrote:
>>Yeah, the safedisc patch didn't seem to help the issue at all.  I really
>>hope this isn't debugger checks failing, but I still wonder why a
>>seemingly valid command (movaps) is returning a privileged instruction 
>>exception.
>>    
>>
>google says:
>movaps will cause an exception when trying to access data not aligned to 16-byte boundary.
>
>though i don't really know what you can do about that :(
>
>
>  
>
Thanks for finding that.  It looks like the movaps command that is 
failing is:

(gdb) disassemble bar
Dump of assembler code for function bar:
0x080495a0 <bar+0>:     movaps %xmm0,(%ecx)

So looking at the winedbg dump:

Register dump:
 CS:0073 SS:007b DS:007b ES:007b FS:003b GS:0033
 EIP:00872230 ESP:7fbfee40 EBP:7fbfef64 EFLAGS:00210202(   - 00      -
-RI1) EAX:75065bec EBX:00f77bc0 ECX:00f78080 EDX:00f78080
 ESI:60890008 EDI:75003280


It seems like ECX is 00f78080.  I think that's on a 16 byte boundary, 
but I'm not positive.

Thanks for all the help everyone,
Tyler