GDB provides two commands for accessing the Guile interpreter:
guile-repl command can be used to start an interactive
Guile prompt or repl. To return to GDB,
type ,q or the
EOF character (e.g., Ctrl-D on
an empty prompt). These commands do not take any arguments.
guile command can be used to evaluate a Scheme expression.
If given an argument, GDB will pass the argument to the Guile interpreter for evaluation.
(gdb) guile (display (+ 20 3)) (newline) 23
The result of the Scheme expression is displayed using normal Guile rules.
(gdb) guile (+ 20 3) 23
If you do not provide an argument to
guile, it will act as a
multi-line command, like
define. In this case, the Guile
script is made up of subsequent command lines, given after the
guile command. This command list is terminated using a line
end. For example:
(gdb) guile >(display 23) >(newline) >end 23
It is also possible to execute a Guile script from the GDB interpreter:
The script name must end with ‘.scm’ and GDB must be configured
to recognize the script language based on filename extension using
script-extension setting. See Extending GDB.
guile (load "script-name")
This method uses the
load Guile function.
It takes a string argument that is the name of the script to load.
See the Guile documentation for a description of this function.
(see Loading in GNU Guile Reference Manual).