Bug 126245

Summary:	vex x86->IR: unhandled instruction bytes: 0x66 0x60 0xB8 0x1
Product:	[Developer tools] valgrind	Reporter:	Thomas Kühne <thomas-dloop>
Component:	vex	Assignee:	Julian Seward <jseward>
Status:	REPORTED ---
Severity:	crash	CC:	austinenglish, cpigat242, jeffzaroyko
Priority:	NOR
Version:	3.2 SVN
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed In:
Bug Depends on:
Bug Blocks:	256630
Attachments:	PUSHAW/POPAW handling

Description Thomas Kühne 2006-04-25 22:37:55 UTC

43:   66 89 4d ec             mov    WORD PTR [ebp-20],cx
  47:   66 89 55 ee             mov    WORD PTR [ebp-18],dx
  4b:   66                      data16
  4c:   60                      pusha  
  4d:   b8 01 00 00 00          mov    eax,0x1
  52:   bb 02 00 00 00          mov    ebx,0x2

(http://dstress.kuehne.cn/run/a/asm_pusha_01.d)

Comment 1 Vince Weaver 2010-11-11 20:08:58 UTC

*** Bug 179340 has been marked as a duplicate of this bug. ***

Comment 2 Matteo Bruni 2011-01-08 21:43:16 UTC

Created attachment 55750 [details]
PUSHAW/POPAW handling

This issue also shows when trying to run Mass Effect 2 (demo or full version) through Wine.
I'm attaching a patch implementing the missing piece of code: it seems to let the program go on, but I'm not really sure of its correctness.

Comment 3 Austin English 2014-05-28 01:46:45 UTC

I don't see this in valgrind-3.9.0 and wine-1.7.19-70-gd6a59f7. Mass Effect 2 doesn't run under valgrind, however.

If I run MassEffect2.exe directly, wine fails to load umbra.dll (which is in the cwd). If I run MassEffect2Launcher.exe, the launcher displays and I can click play, but it fails shortly after with the same umbra.dll issue.