gdb: add target_ops::supports_displaced_step

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

diff --git a/gdb/NEWS b/gdb/NEWS
index 18703247fa61109b11cfe68715208d23096a653c..2a9c8b8ee1924cf35bd258a4e3937051961fe63f 100644 (file)
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -3,6 +3,28 @@
 
 *** Changes since GDB 9
 
+* Help and apropos commands will now show the documentation of a
+  command only once, even if that command has one or more aliases.
+  These commands now show the command name, then all of its aliases,
+  and finally the description of the command.
+
+* 'help aliases' now shows only the user defined aliases.  GDB predefined
+  aliases are shown together with their aliased command.
+
+* GDB now supports debuginfod, an HTTP server for distributing ELF/DWARF
+  debugging information as well as source code.
+
+  When built with debuginfod, GDB can automatically query debuginfod
+  servers for the separate debug files and source code of the executable
+  being debugged.
+
+  To build GDB with debuginfod, pass --with-debuginfod to configure (this
+  requires libdebuginfod, the debuginfod client library).
+
+  debuginfod is distributed with elfutils, starting with version 0.178.
+
+  You can get the latest version from https://sourceware.org/elfutils.
+
 * New features in the GDB remote stub, GDBserver
 
   ** GDBserver is now supported on RISC-V GNU/Linux.
@@ -19,18 +41,26 @@
 
 * TUI windows can now be arranged horizontally.
 
+* The command history filename can now be set to the empty string
+  either using 'set history filename' or by setting 'GDBHISTFILE=' in
+  the environment.  The effect of setting this filename to the empty
+  string is that GDB will not try to load any previous command
+  history.
+
+* 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 running process and can determine the name of the executable file
-  the process runs, this new option indicates whether to detect mismatch
-  between the name of the current executable file loaded by GDB
-  and the name of the executable file used to start the process.
-  If 'ask', the default, display a warning and ask the user
-  whether to load the process executable file; if 'warn', just display
-  a warning; if 'off', don't attempt to detect a mismatch.
+  Set or show the option 'exec-file-mismatch'.  When GDB attaches to a
+  running process, this new option indicates whether to detect
+  a mismatch between the current executable file loaded by GDB and the
+  executable file used to start the process.  If 'ask', the default,
+  display a warning and ask the user whether to load the process
+  executable file; if 'warn', just display a warning; if 'off', don't
+  attempt to detect a mismatch.
 
 tui new-layout NAME WINDOW WEIGHT [WINDOW WEIGHT]...
   Define a new TUI layout, specifying its name and the windows that
@@ -40,6 +70,19 @@ tui new-layout NAME WINDOW WEIGHT [WINDOW WEIGHT]...
 
 GNU/Linux/RISC-V (gdbserver)   riscv*-*-linux*
 
+* Python API
+
+  ** gdb.register_window_type can be used to implement new TUI windows
+     in Python.
+
+  ** Dynamic types can now be queried.  gdb.Type has a new attribute,
+     "dynamic", and gdb.Type.sizeof can be None for a dynamic type.  A
+     field of a dynamic type may have None for its "bitpos" attribute
+     as well.
+
+  ** Commands written in Python can be in the "TUI" help class by
+     registering with the new constant gdb.COMMAND_TUI.
+
 *** Changes in GDB 9
 
 * 'thread-exited' event is now available in the annotations interface.
@@ -2391,7 +2434,7 @@ show code-cache
 * Newly installed $prefix/bin/gcore acts as a shell interface for the
   GDB command gcore.
 
-* GDB now implements the the C++ 'typeid' operator.
+* GDB now implements the C++ 'typeid' operator.
 
 * The new convenience variable $_exception holds the exception being
   thrown or caught at an exception-related catchpoint.
@@ -5175,7 +5218,7 @@ The new infrastructure making possible the implementation of key new
 features including 32x64 (e.g., 64-bit amd64 GDB debugging a 32-bit
 i386 application).
 
-GDB 6.3 will be the last release to include the the registers[]
+GDB 6.3 will be the last release to include the registers[]
 compatibility module that allowed out-of-date configurations to
 continue to work.  This change directly impacts the following
 configurations:
@@ -6606,7 +6649,7 @@ Remote targets now use a data cache to speed up communication with the
 remote side.  The data cache could lead to incorrect results because
 it doesn't know about volatile variables, thus making it impossible to
 debug targets which use memory mapped I/O devices. `set remotecache
-off' turns the the data cache off.
+off' turns the data cache off.
 
 * Remote targets may have threads