Bug 432861

Summary:	PPC modsw and modsd give incorrect results for 1 mod 12
Product:	[Developer tools] valgrind	Reporter:	Carl Love <cel>
Component:	vex	Assignee:	Julian Seward <jseward>
Status:	CLOSED FIXED
Severity:	normal	CC:	will_schmidt
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Patch to fix the modsw and modsd instructions

Description Carl Love 2021-02-12 16:04:16 UTC

The result of 1 mod 12 should be 1.  Valgrind is giving 0 for modsw and modsd

Comment 1 Carl Love 2021-02-12 16:21:52 UTC

Created attachment 135639 [details]
Patch to fix the modsw and modsd instructions

The patch has the fix for the modsw and modsd instructions.  Also adds a testcase for the signed, unsigned versions of the mod instruction for both word and long types.

Comment 2 Carl Love 2021-02-12 17:41:16 UTC

Patch committed, closing bug

commit b4eff82004077b5628e9c0958121fe6156c29664 (origin/master, origin/HEAD)
Author: Carl Love <cel@us.ibm.com>
Date:   Wed Feb 10 21:04:22 2021 -0600

    PPC, modsw and modsd instruction fix