Bug 443033

Summary:	Add support for the ISA 3.0 mcrxrx instruction
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 First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Carl Love 2021-09-27 21:10:12 UTC

Valgrind currently does not have support for the ISA3.0  mcrxrx instruction.

The mcrxr instruction is supported up to ISA 2.07.  In ISA 3.0 the mcrxrx instruction is introduce to replace the mcrxr instruction.  The regression test is being compiled for ISA 2.07 not ISA 3.0.  Need to fix the compile flags so the test is properly compiled for ISA 2.07.  There needs to be a new ISA 3.0 test for the mcrxrx instruction

Comment 1 Carl Love 2021-09-30 22:52:14 UTC

Committed patch to add support for the mxrxrx instruction and the testcase
for the instruction.


commit a3c3f5394a77c641de19df1b59a7f544e5e0470a (HEAD -> master, origin/master, origin/HEAD)
Author: Carl Love <cel@us.ibm.com>
Date:   Wed Sep 29 21:20:30 2021 +0000

    New test for the ISA 3.0 mcrxrx instruction.
    
    Add new test.

commit 7bd75320a0ba995be90e469fe4f26f4a925875b9
Author: Carl Love <cel@us.ibm.com>
Date:   Thu Sep 9 19:06:00 2021 +0000

    Add support for the mcrxrx instruction.
    
    The mcrxrx instruction was introduced in ISA 3.0. It was missed when the
    ISA 3.0 support was added to Valgrind.
    
    The mcrxr instruction is not supported on ISA 3.0 and beyond. The
    instructions both do a move to the condition register however the mcrxrx
    moves [OV|OV32|CA|CA32].  Where the mcrxr instruction moves XER[32:35]
    (S0, OV, and CA bits) to the CR.