On Sun, Apr 21, 2013 at 01:46:50PM +0200, Borislav Petkov wrote:
> We probably need something with copying values to a temp variable or so.
Basically something like that:
case 2:
/*
* From MOVBE definition: "...When the operand size is 16 bits,
* the upper word of the destination register remains unchanged
* ..."
*
* Both casting ->valptr and ->val to u16 breaks strict aliasing
* rules so we have to do the operation almost per hand.
*/
tmp = (u16)ctxt->src.val;
ctxt->dst.val &= ~0xffffUL;
ctxt->dst.val |= (unsigned long)swab16(tmp);
break;
This passes all gcc checks, even the stricter ones when building with W=3.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
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