\input texinfo @c -*-texinfo-*-
-@c Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
-@c 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-@c 2010, 2011 Free Software Foundation, Inc.
+@c Copyright (C) 1988-1996, 1998-2012 Free Software Foundation, Inc.
@c
@c %**start of header
@c makeinfo ignores cmds prev to setfilename, so its arg cannot make use
Activate the @dfn{Text User Interface} when starting. The Text User
Interface manages several text windows on the terminal, showing
source, assembly, registers and @value{GDBN} command outputs
-(@pxref{TUI, ,@value{GDBN} Text User Interface}). Alternatively, the
-Text User Interface can be enabled by invoking the program
-@samp{@value{GDBTUI}}. Do not use this option if you run @value{GDBN} from
-Emacs (@pxref{Emacs, ,Using @value{GDBN} under @sc{gnu} Emacs}).
+(@pxref{TUI, ,@value{GDBN} Text User Interface}). Do not use this
+option if you run @value{GDBN} from Emacs (@pxref{Emacs, ,
+Using @value{GDBN} under @sc{gnu} Emacs}).
@c @item -xdb
@c @cindex @code{--xdb}
@item @var{filename}:@var{linenum}
Specifies the line @var{linenum} in the source file @var{filename}.
+If @var{filename} is a relative file name, then it will match any
+source file name with the same trailing components. For example, if
+@var{filename} is @samp{gcc/expr.c}, then it will match source file
+name of @file{/build/trunk/gcc/expr.c}, but not
+@file{/build/trunk/libcpp/expr.c} or @file{/build/trunk/gcc/x-expr.c}.
@item @var{function}
Specifies the line that begins the body of the function @var{function}.
in this file. But it is possible to have more than one such variable or
function with the same name (in different source files). If that
happens, referring to that name has unpredictable effects. If you wish,
-you can specify a static variable in a particular function or file,
+you can specify a static variable in a particular function or file by
using the colon-colon (@code{::}) notation:
@cindex colon-colon, context for variables/functions
(@value{GDBP}) p 'f2.c'::x
@end smallexample
+The @code{::} notation is normally used for referring to
+static variables, since you typically disambiguate uses of local variables
+in functions by selecting the appropriate frame and using the
+simple name of the variable. However, you may also use this notation
+to refer to local variables in frames enclosing the selected frame:
+
+@smallexample
+void
+foo (int a)
+@{
+ if (a < 10)
+ bar (a);
+ else
+ process (a); /* Stop here */
+@}
+
+int
+bar (int a)
+@{
+ foo (a + 5);
+@}
+@end smallexample
+
+@noindent
+For example, if there is a breakpoint at the commented line,
+here is what you might see
+when the program stops after executing the call @code{bar(0)}:
+
+@smallexample
+(@value{GDBP}) p a
+$1 = 10
+(@value{GDBP}) p bar::a
+$2 = 5
+(@value{GDBP}) up 2
+#2 0x080483d0 in foo (a=5) at foobar.c:12
+(@value{GDBP}) p a
+$3 = 5
+(@value{GDBP}) p bar::a
+$4 = 0
+@end smallexample
+
@cindex C@t{++} scope resolution
-This use of @samp{::} is very rarely in conflict with the very similar
+These uses of @samp{::} are very rarely in conflict with the very similar
use of the same notation in C@t{++}. @value{GDBN} also supports use of the C@t{++}
scope resolution operator in @value{GDBN} expressions.
@c FIXME: Um, so what happens in one of those rare cases where it's in
regular expressions.
@xref{Writing a Pretty-Printer}, for an example.
+@item FlagEnumerationPrinter (@var{name})
+A pretty-printer which handles printing of @code{enum} values. Unlike
+@value{GDBN}'s built-in @code{enum} printing, this printer attempts to
+work properly when there is some overlap between the enumeration
+constants. @var{name} is the name of the printer and also the name of
+the @code{enum} type to look up.
+
@item register_pretty_printer (@var{obj}, @var{printer}, @var{replace}=False)
Register @var{printer} with the pretty-printer list of @var{obj}.
If @var{replace} is @code{True} then any existing copy of the printer
on platforms where a suitable version of the @code{curses} library
is available.
-@pindex @value{GDBTUI}
The TUI mode is enabled by default when you invoke @value{GDBN} as
-either @samp{@value{GDBTUI}} or @samp{@value{GDBP} -tui}.
+@samp{@value{GDBP} -tui}.
You can also switch in and out of TUI mode while @value{GDBN} runs by
using various TUI commands and key bindings, such as @kbd{C-x C-a}.
@xref{TUI Keys, ,TUI Key Bindings}.
projects / deliverable / binutils-gdb.git / blobdiff