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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/31484] New: [gdb/testsuite] Add memcpy, memmove,
 memset watchpoint tests
Date: Thu, 14 Mar 2024 11:14:12 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D31484

            Bug ID: 31484
           Summary: [gdb/testsuite] Add memcpy, memmove, memset watchpoint
                    tests
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: testsuite
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

While discussing aarch64 watchpoints, the point was raised that it's not cl=
ear
what addr_trap the kernel will report when using the aarch64 mops feature o=
ps (
CPYF*, CPY*, SET* and SETG*).

For now, there doesn't seem to a an SOC out there supporting this (looking =
at
https://gpages.juszkiewicz.com.pl/arm-socs-table/arm-socs.html).

Nevertheless, we can add test-cases that excercise memset/memcpy/memmove and
set watchpoints.  On a mops architecture, using those will active the optim=
ized
versions in glibc which will use the mops feature ops.

Likewise, on other architecture optimized versions may be triggered which f=
avor
larger memory access operations, which are interesting for testing watchpoi=
nt
behaviour.

--=20
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