Bug 303804

Summary:	vex x86->IR: unhandled instruction bytes: 0x66 0xF 0x3A 0xDF
Product:	[Developer tools] valgrind	Reporter:	Mariusz Plucinski <plucinski.mariusz>
Component:	vex	Assignee:	Julian Seward <jseward>
Status:	RESOLVED INTENTIONAL
Severity:	normal	CC:	philippe.waroquiers
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	macOS (DMG)
OS:	macOS
See Also:	https://bugs.kde.org/show_bug.cgi?id=332917
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Valgrind output. Stubs for several SSE instructions in x86 mode.

Description Mariusz Plucinski 2012-07-19 15:32:20 UTC

Problem occurs when trying to debug an application using Valgrind (current SVN trunk).


Reproducible: Always

Steps to Reproduce:
1. Run Valgrind with application using OS X cryptographic libraries.
Actual Results:  
vex x86->IR: unhandled instruction bytes: 0x66 0xF 0x3A 0xDF
==96147== valgrind: Unrecognised instruction at address 0x330be41.
==96147==    at 0x330BE41: aes_encrypt_key_hw (in /usr/lib/system/libcommonCrypto.dylib)


Expected Results:  
No information about unhandled instruction when running an application.

Comment 1 Mariusz Plucinski 2012-07-19 15:33:44 UTC

Created attachment 72632 [details]
Valgrind output.

Comment 2 Philippe Waroquiers 2012-07-22 18:00:53 UTC

This is the same problem as discussed in bug 290655 comment 13 and 14.
There is currently no plan to have SSE 4 in 32 bits mode.
So, at least for the moment, the only solution is to switch to 64 bit app.

Comment 3 Mariusz Plucinski 2012-08-01 11:30:44 UTC

Understand.

Anyway, I have created stubs for a few instructions (AESDEC, AESDECLAST, AESENC, AESENCLAST, AESIMC, AESKEYGENASSIST and PEXTRD). It made my application working. Maybe it will help someone.

Comment 4 Mariusz Plucinski 2012-08-01 11:32:03 UTC

Created attachment 72871 [details]
Stubs for several SSE instructions in x86 mode.