gdbsupport: allow passing format string to scoped_debug_start_end

[deliverable/binutils-gdb.git] / gdb / NEWS

diff --git a/gdb/NEWS b/gdb/NEWS
index d1f721c39536c81da0f10785d25ad6c77fb70ccc..faccf40dd4138f2eae17b29ab3738a1a40209d7b 100644 (file)
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -3,6 +3,24 @@
 
 *** 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).
+
 * MI changes
 
  ** '-break-insert --qualified' and '-dprintf-insert --qualified'
@@ -21,12 +39,68 @@
   $HOME/.gdbinit.  On Apple hosts the search order is instead:
   $HOME/Library/Preferences/gdb/gdbinit, $HOME/.gdbinit.
 
+* GDB now supports fixed point types which are described in DWARF
+  as base types with a fixed-point encoding.  Additionally, support
+  for the DW_AT_GNU_numerator and DW_AT_GNU_denominator has also
+  been added.
+
+  For Ada, this allows support for fixed point types without requiring
+  the use of the GNAT encoding (based on information added to the type's
+  name following a GNAT-specific format).
+
+* GDB will now load and process commands from ~/.config/gdb/gdbearlyinit
+  or ~/.gdbearlyinit if these files are present.  These files are
+  processed earlier than any of the other initialization files and
+  can affect parts of GDB's startup that previously had already been
+  completed before the initialization files were read, for example
+  styling of the initial GDB greeting.
+
+* GDB now has two new options "--early-init-command" and
+  "--early-init-eval-command" with corresponding short options "-eix"
+  and "-eiex" that allow options (that would normally appear in a
+  gdbearlyinit file) to be passed on the command line.
+
 * New commands
 
 set debug event-loop
 show debug event-loop
   Control the display of debug output about GDB's event loop.
 
+set print memory-tag-violations
+show print memory-tag-violations
+  Control whether to display additional information about memory tag violations
+  when printing pointers and addresses.  Architecture support for memory
+  tagging is required for this option to have an effect.
+
+maintenance flush symbol-cache
+maintenance flush register-cache
+  These new commands are equivalent to the already existing commands
+  'maintenance flush-symbol-cache' and 'flushregs' respectively.
+
+maintenance flush dcache
+  A new command to flush the dcache.
+
+maintenance info target-sections
+  Print GDB's internal target sections table.
+
+memory-tag show-logical-tag POINTER
+  Print the logical tag for POINTER.
+memory-tag with-logical-tag POINTER TAG
+  Print POINTER 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 POINTER
+  Validate that POINTER's logical tag matches the allocation tag.
+
+set startup-quietly on|off
+show startup-quietly
+  When 'on', this causes GDB to act as if "-silent" were passed on the
+  command line.  This command needs to be added to an early
+  initialization file (e.g. ~/.config/gdb/gdbearlyinit) in order to
+  affect GDB.
+
 * Changed commands
 
 break [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]
@@ -49,6 +123,40 @@ condition [-force] N COND
   GDB into defining the condition even when COND is invalid for all the
   current locations of breakpoint N.
 
+flushregs
+maintenance flush-symbol-cache
+  These commands are deprecated in favor of the new commands
+  'maintenance flush register-cache' and 'maintenance flush
+  symbol-cache' respectively.
+
+set style version foreground COLOR
+set style version background COLOR
+set style version intensity VALUE
+  Control the styling of GDB's version number text.
+
+inferior [ID]
+  When the ID parameter is omitted, then this command prints information
+  about the current inferior.  When the ID parameter is present, the
+  behavior of the command is unchanged and have the inferior ID become
+  the current inferior.
+
+maintenance info sections
+  The ALLOBJ keyword has been replaced with an -all-objects command
+  line flag.  It is now possible to filter which sections are printed
+  even when -all-objects is passed.
+
+* Removed targets and native configurations
+
+ARM Symbian                    arm*-*-symbianelf*
+
+* 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"