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Diffstat (limited to 'gdb/doc/gdb.texinfo')
| -rw-r--r-- | gdb/doc/gdb.texinfo | 106 |
1 files changed, 69 insertions, 37 deletions
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index f470800..c99dcad 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -1,6 +1,6 @@ \input texinfo @c -*-texinfo-*- @c Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, -@c 1999, 2000, 2001, 2002, 2003 +@c 1999, 2000, 2001, 2002, 2003, 2004 @c Free Software Foundation, Inc. @c @c %**start of header @@ -52,7 +52,7 @@ This is the @value{EDITION} Edition, of @cite{Debugging with Version @value{GDBVN}. Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998,@* - 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or @@ -84,7 +84,7 @@ development.'' @vskip 0pt plus 1filll Copyright @copyright{} 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, -1996, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. +1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. @sp 2 Published by the Free Software Foundation @* 59 Temple Place - Suite 330, @* @@ -115,7 +115,7 @@ This file describes @value{GDBN}, the @sc{gnu} symbolic debugger. This is the @value{EDITION} Edition, for @value{GDBN} Version @value{GDBVN}. -Copyright (C) 1988-2003 Free Software Foundation, Inc. +Copyright (C) 1988-2004 Free Software Foundation, Inc. @menu * Summary:: Summary of @value{GDBN} @@ -2289,9 +2289,10 @@ get its process ID. Then tell @value{GDBN} (a new invocation of the child process (@pxref{Attach}). From that point on you can debug the child process just like any other process which you attached to. -On HP-UX (11.x and later only?), @value{GDBN} provides support for -debugging programs that create additional processes using the -@code{fork} or @code{vfork} function. +On some systems, @value{GDBN} provides support for debugging programs that +create additional processes using the @code{fork} or @code{vfork} functions. +Currently, the only platforms with this feature are HP-UX (11.x and later +only?) and GNU/Linux (kernel version 2.5.60 and later). By default, when a program forks, @value{GDBN} will continue to debug the parent process and the child process will run unimpeded. @@ -2315,8 +2316,6 @@ unimpeded. This is the default. The new process is debugged after a fork. The parent process runs unimpeded. -@item ask -The debugger will ask for one of the above choices. @end table @item show follow-fork-mode @@ -8482,12 +8481,13 @@ A fully qualified Objective-C method name is specified as -[@var{Class} @var{methodName}] @end smallexample -where the minus sign is used to indicate an instance method and a plus -sign (not shown) is used to indicate a class method. The -class name @var{Class} and method name @var{methoName} are enclosed in -brackets, similar to the way messages are specified in Objective-C source -code. For example, to set a breakpoint at the @code{create} instance method of -class @code{Fruit} in the program currently being debugged, enter: +where the minus sign is used to indicate an instance method and a +plus sign (not shown) is used to indicate a class method. The class +name @var{Class} and method name @var{methodName} are enclosed in +brackets, similar to the way messages are specified in Objective-C +source code. For example, to set a breakpoint at the @code{create} +instance method of class @code{Fruit} in the program currently being +debugged, enter: @smallexample break -[Fruit create] @@ -8500,10 +8500,10 @@ enter: list +[NSText initialize] @end smallexample -In the current version of GDB, the plus or minus sign is required. In -future versions of GDB, the plus or minus sign will be optional, but you -can use it to narrow the search. It is also possible to specify just a -method name: +In the current version of @value{GDBN}, the plus or minus sign is +required. In future versions of @value{GDBN}, the plus or minus +sign will be optional, but you can use it to narrow the search. It +is also possible to specify just a method name: @smallexample break create @@ -8524,20 +8524,24 @@ clear -[NSWindow makeKeyAndOrderFront:] @node The Print Command with Objective-C @subsubsection The Print Command With Objective-C +@kindex print-object +@kindex po @r{(@code{print-object})} -The print command has also been extended to accept methods. For example: +The print command has also been extended to accept methods. For example: @smallexample -print -[object hash] +print -[@var{object} hash] @end smallexample @cindex print an Objective-C object description -will tell gdb to send the -hash message to object and print the -result. Also an additional command has been added, @code{print-object} -or @code{po} for short, which is meant to print the description of an -object. However, this command may only work with certain Objective-C -libraries that have a particular hook function, called -@code{_NSPrintForDebugger} defined. +@cindex @code{_NSPrintForDebugger}, and printing Objective-C objects +@noindent +will tell @value{GDBN} to send the @code{hash} message to @var{object} +and print the result. Also, an additional command has been added, +@code{print-object} or @code{po} for short, which is meant to print +the description of an object. However, this command may only work +with certain Objective-C libraries that have a particular hook +function, @code{_NSPrintForDebugger}, defined. @node Modula-2, , Objective-C, Support @subsection Modula-2 @@ -10628,9 +10632,7 @@ configuration of @value{GDBN}; use @code{help target} to list them. @node KOD @section Kernel Object Display - @cindex kernel object display -@cindex kernel object @cindex KOD Some targets support kernel object display. Using this facility, @@ -10639,6 +10641,7 @@ and can display information about operating system-level objects such as mutexes and other synchronization objects. Exactly which objects can be displayed is determined on a per-OS basis. +@kindex set os Use the @code{set os} command to set the operating system. This tells @value{GDBN} which kernel object display module to initialize: @@ -10646,11 +10649,17 @@ Use the @code{set os} command to set the operating system. This tells (@value{GDBP}) set os cisco @end smallexample +@kindex show os +The associated command @code{show os} displays the operating system +set with the @code{set os} command; if no operating system has been +set, @code{show os} will display an empty string @samp{""}. + If @code{set os} succeeds, @value{GDBN} will display some information about the operating system, and will create a new @code{info} command which can be used to query the target. The @code{info} command is named after the operating system: +@kindex info cisco @smallexample (@value{GDBP}) info cisco List of Cisco Kernel Objects @@ -10661,8 +10670,10 @@ any Any and all objects Further subcommands can be used to query about particular objects known by the kernel. -There is currently no way to determine whether a given operating system -is supported other than to try it. +There is currently no way to determine whether a given operating +system is supported other than to try setting it with @kbd{set os +@var{name}}, where @var{name} is the name of the operating system you +want to try. @node Remote Debugging @@ -17202,8 +17213,14 @@ Show a single frame: @end smallexample Display the local variable names for the current frame. With an -argument of 0 prints only the names of the variables, with argument of 1 -prints also their values. +argument of 0 or @code{--no-values}, prints only the names of the variables. +With argument of 1 or @code{--all-values}, prints also their values. With +argument of 2 or @code{--simple-values}, prints the name, type and value for +simple data types and the name and type for arrays, structures and +unions. In this last case, the idea is that the user can see the +value of simple data types immediately and he can create variable +objects for other data types if he wishes to explore their values in +more detail. @subsubheading @value{GDBN} Command @@ -17216,9 +17233,12 @@ prints also their values. -stack-list-locals 0 ^done,locals=[name="A",name="B",name="C"] (@value{GDBP}) --stack-list-locals 1 +-stack-list-locals --all-values ^done,locals=[@{name="A",value="1"@},@{name="B",value="2"@}, - @{name="C",value="3"@}] + @{name="C",value="@{1, 2, 3@}"@}] +-stack-list-locals --simple-values +^done,locals=[@{name="A",type="int",value="1"@}, + @{name="B",type="int",value="2"@},@{name="C",type="int [3]"@}] (@value{GDBP}) @end smallexample @@ -18162,14 +18182,26 @@ Returns the number of children of a variable object @var{name}: @subsubheading Synopsis @smallexample - -var-list-children @var{name} + -var-list-children [@var{print-values}] @var{name} @end smallexample -Returns a list of the children of the specified variable object: +Returns a list of the children of the specified variable object. With +just the variable object name as an argument or with an optional +preceding argument of 0 or @code{--no-values}, prints only the names of the +variables. With an optional preceding argument of 1 or @code{--all-values}, +also prints their values. + +@subsubheading Example @smallexample +(@value{GDBP}) + -var-list-children n numchild=@var{n},children=[@{name=@var{name}, numchild=@var{n},type=@var{type}@},@r{(repeats N times)}] +(@value{GDBP}) + -var-list-children --all-values n + numchild=@var{n},children=[@{name=@var{name}, + numchild=@var{n},value=@var{value},type=@var{type}@},@r{(repeats N times)}] @end smallexample |