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Multiply a xmm register with a defined value

 
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Praefator
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Joined: 26 Feb 2016
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PostPosted: Sat Feb 25, 2017 4:06 am    Post subject: Multiply a xmm register with a defined value Reply with quote
Consider the following block

Code:
label(multiplier)
label(code)
label(original)
label(return)

multiplier:
  dw (float)3.0

newmem:

code:
  mulss xmm0, dword ptr [multiplier]

original:
 // rest of the script


when I try to inject the game crashes.
Am I doing the multiplication wrong?
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Dark Byte
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Joined: 09 May 2003
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Location: The netherlands
PostPosted: Sat Feb 25, 2017 4:11 am    Post subject: Reply with quote
use dd instead of dw

and put multiplier: behind originalcode, or change label(multiplier) to alloc(multiplier,4)
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Joined: 26 Feb 2016
Posts: 10
PostPosted: Sat Feb 25, 2017 4:44 am    Post subject: Reply with quote
It worked!

I guess the memory wasn't allocating due to the allocation being before the newmem label. Embarassed

Thank You, Dark Byte! Wink
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