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[Bug gas/24279] New: ARMv8.5 extension incorrectly named "predres" inste
From: |
rth at gcc dot gnu.org |
Subject: |
[Bug gas/24279] New: ARMv8.5 extension incorrectly named "predres" instead of "predinv" |
Date: |
Thu, 28 Feb 2019 00:58:38 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=24279
Bug ID: 24279
Summary: ARMv8.5 extension incorrectly named "predres" instead
of "predinv"
Product: binutils
Version: 2.33 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: rth at gcc dot gnu.org
Target Milestone: ---
commit dad0c3bfb5e32ff3f2a03830dc189fe207c7ae00
Author: Sudakshina Das <address@hidden>
Date: Fri Oct 5 10:51:22 2018 +0100
[Arm, 3/3] Add Execution and Data Prediction instructions for AArch32
This patch is part of the patch series to add support for ARMv8.5-A
extensions.
(https://developer.arm.com/products/architecture/cpu-architecture/a-profile/
exploration-tools)
This patch adds the Execution and Data Prediction Restriction
instructions (that is, cfprctx, dvprxtc, cpprctx). These are all
aliases to MCR and are disassembled as such.
This instruction is retrospectively made optional for all versions of
the architecture from ARMv8.0 to ARMv8.4 and is mandatory from
ARMv8.5. Hence adding a new +predres for older versions of the
architecture.
-----
The official name of the extension is v8.0-PredInv.
(You can see this used in the xml descriptions for the new insns, eg:
https://developer.arm.com/docs/ddi0595/b/aarch64-system-instructions/cfp-rctx )
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