Bug 17729

Summary:	pixman crashs on non-MMX / non-SSE capable CPUs
Product:	pixman	Reporter:	dave.mueller
Component:	pixman	Assignee:	Søren Sandmann Pedersen <soren.sandmann>
Status:	RESOLVED FIXED	QA Contact:	Søren Sandmann Pedersen <soren.sandmann>
Severity:	normal
Priority:	medium
Version:	0.1.3
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	move _mm_empty() to correct place

Description dave.mueller 2008-09-22 23:42:34 UTC

Created attachment 19114 [details] [review]
move _mm_empty() to correct place

The "fbComposeSetupSSE2()" function is guarding most of its code depending on the capabilities of the CPU, but unfortunately the call to "_mm_empty()" is not part of this code path but executed unconditionally.
This results in a "illegal instruction" crash on non-MMX / non-SSE capable CPUs caused by the the "emms" instruction (embedded in "_mm_empty()").

Comment 1 Søren Sandmann Pedersen 2008-09-23 04:48:59 UTC

Fixed in master, thanks.

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