From: Nick Roberts Date: Wed, 6 Jun 2007 21:29:14 +0000 (+0000) Subject: (Emacs): Describe GDB under Emacs 22.1. X-Git-Url: http://git.efficios.com/?a=commitdiff_plain;h=5e252a2e4416c74861a97617d030327695d4aa47;p=deliverable%2Fbinutils-gdb.git (Emacs): Describe GDB under Emacs 22.1. --- diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index c9b47bec49..7918465915 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -16780,13 +16780,13 @@ executable file you want to debug as an argument. This command starts created Emacs buffer. @c (Do not use the @code{-tui} option to run @value{GDBN} from Emacs.) -Using @value{GDBN} under Emacs is just like using @value{GDBN} normally except for two +Running @value{GDBN} under Emacs can be just like running @value{GDBN} normally except for two things: @itemize @bullet @item -All ``terminal'' input and output goes through the Emacs buffer. -@end itemize +All ``terminal'' input and output goes through an Emacs buffer, called +the GUD buffer. This applies both to @value{GDBN} commands and their output, and to the input and output done by the program you are debugging. @@ -16800,10 +16800,8 @@ with your program. In particular, you can send signals the usual way---for example, @kbd{C-c C-c} for an interrupt, @kbd{C-c C-z} for a stop. -@itemize @bullet @item @value{GDBN} displays source code through Emacs. -@end itemize Each time @value{GDBN} displays a stack frame, Emacs automatically finds the source file for that frame and puts an arrow (@samp{=>}) at the @@ -16813,6 +16811,12 @@ and the source. Explicit @value{GDBN} @code{list} or search commands still produce output as usual, but you probably have no reason to use them from Emacs. +@end itemize + +We call this @dfn{text command mode}. Emacs 22.1, and later, also uses +a graphical mode, enabled by default, which provides further buffers +that can control the execution and describe the state of your program. +@xref{GDB Graphical Interface,,, Emacs, The @sc{gnu} Emacs Manual}. If you specify an absolute file name when prompted for the @kbd{M-x gdb} argument, then Emacs sets your current working directory to where @@ -16825,9 +16829,9 @@ some operating systems it might not find the source. So, although the buffer does not display the current source and line of execution. The initial working directory of @value{GDBN} is printed on the top -line of the @value{GDBN} I/O buffer and this serves as a default for -the commands that specify files for @value{GDBN} to operate -on. @xref{Files, ,Commands to Specify Files}. +line of the GUD buffer and this serves as a default for the commands +that specify files for @value{GDBN} to operate on. @xref{Files, +,Commands to Specify Files}. By default, @kbd{M-x gdb} calls the program called @file{gdb}. If you need to call @value{GDBN} by a different name (for example, if you @@ -16835,12 +16839,12 @@ keep several configurations around, with different names) you can customize the Emacs variable @code{gud-gdb-command-name} to run the one you want. -In the @value{GDBN} I/O buffer, you can use these special Emacs commands in +In the GUD buffer, you can use these special Emacs commands in addition to the standard Shell mode commands: @table @kbd @item C-h m -Describe the features of Emacs' @value{GDBN} Mode. +Describe the features of Emacs' GUD Mode. @item C-c C-s Execute to another source line, like the @value{GDBN} @code{step} command; also @@ -16876,12 +16880,13 @@ Go down the number of frames indicated by the numeric argument, like the In any source file, the Emacs command @kbd{C-x @key{SPC}} (@code{gud-break}) tells @value{GDBN} to set a breakpoint on the source line point is on. -If you type @kbd{M-x speedbar}, then Emacs displays a separate frame which -shows a backtrace when the @value{GDBN} I/O buffer is current. Move -point to any frame in the stack and type @key{RET} to make it become the -current frame and display the associated source in the source buffer. -Alternatively, click @kbd{Mouse-2} to make the selected frame become the -current one. +In text command mode, if you type @kbd{M-x speedbar}, Emacs displays a +separate frame which shows a backtrace when the GUD buffer is current. +Move point to any frame in the stack and type @key{RET} to make it +become the current frame and display the associated source in the +source buffer. Alternatively, click @kbd{Mouse-2} to make the +selected frame become the current one. In graphical mode, the +speedbar displays watch expressions. If you accidentally delete the source-display buffer, an easy way to get it back is to type the command @code{f} in the @value{GDBN} buffer, to @@ -16896,9 +16901,9 @@ communicates with Emacs in terms of line numbers. If you add or delete lines from the text, the line numbers that @value{GDBN} knows cease to correspond properly with the code. -The description given here is for GNU Emacs version 21.3 and a more -detailed description of its interaction with @value{GDBN} is given in -the Emacs manual (@pxref{Debuggers,,, Emacs, The @sc{gnu} Emacs Manual}). +A more detailed description of Emacs' interaction with @value{GDBN} is +given in the Emacs manual (@pxref{Debuggers,,, Emacs, The @sc{gnu} +Emacs Manual}). @c The following dropped because Epoch is nonstandard. Reactivate @c if/when v19 does something similar. ---doc@cygnus.com 19dec1990