[PATCH v4 24/25] Add NEWS entry.

[Luis Machado via Gdb-patches <gdb-patches@sourceware.org>]

Updates on v4:

- Update command names.

--

Mention the new packets and memory tagging features.

gdb/ChangeLog:

YYYY-MM-DD  Luis Machado  <luis.machado@linaro.org>

	* NEWS: Mention memory tagging changes.
---
 gdb/NEWS | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/gdb/NEWS b/gdb/NEWS
index 66702862ef..0acdac0d28 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -3,6 +3,21 @@
 
 *** Changes since GDB 10
 
+* GDB now supports general memory tagging functionality if the underlying
+  architecture supports the proper primitives and hooks.  Currently this is
+  enabled only for AArch64 MTE.
+
+  This includes:
+
+  - Additional information when the inferior crashes with a SIGSEGV caused by
+    a memory tag violation.
+
+  - A new modifier 'm' for the "x" command, which displays allocation tags for a
+    particular memory range.
+
+  - Display of memory tag mismatches by "print", for addresses and
+  pointers, if memory tagging is supported by the architecture.
+
 * Building GDB now requires GMP (The GNU Multiple Precision Arithmetic
   Library).
 
@@ -47,6 +62,17 @@ maintenance flush register-cache
 maintenance flush dcache
   A new command to flush the dcache.
 
+memory-tag show-logical-tag ADDRESS
+  Print the logical tag for ADDRESS.
+memory-tag with-logical-tag ADDRESS TAG
+  Print ADDRESS with logical tag TAG.
+memory-tag show-allocation-tag ADDRESS
+  Print the allocation tag for ADDRESS.
+memory-tag set-allocation-tag ADDRESS LENGTH TAGS
+  Set the allocation tag for [ADDRESS, ADDRESS + LENGTH) to TAGS.
+memory-tag check ADDRESS
+  Validate that ADDRESS' logical tag matches the allocation tag.
+
 * Changed commands
 
 break [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]
@@ -75,6 +101,14 @@ maintenance flush-symbol-cache
   'maintenance flush register-cache' and 'maintenance flush
   symbol-cache' respectively.
 
+* New remote packets
+
+qMemTags
+  Request the remote to send allocation tags for a particular memory range.
+QMemTags
+  Request the remote to store the specified allocation tags to the requested
+  memory range.
+
 *** Changes in GDB 10
 
 * There are new feature names for ARC targets: "org.gnu.gdb.arc.core"
@@ -159,8 +193,6 @@ maintenance flush-symbol-cache
 * On Windows targets, it is now possible to debug 32-bit programs with a
   64-bit GDB.
 
-* New commands
-
 set exec-file-mismatch -- Set exec-file-mismatch handling (ask|warn|off).
 show exec-file-mismatch -- Show exec-file-mismatch handling (ask|warn|off).
   Set or show the option 'exec-file-mismatch'.  When GDB attaches to a
-- 
2.25.1