HP gnu source-level debugger 5992-4701 21.3 GDB/MI output records, 21.3.1 GDB/MI result records

21.3 GDB/MI output records

21.3.1 GDB/MI result records

In addition to a number of out-of-band notifications, the response to a GDB/MI command includes one of the following result indications:

"^done" [ "," results ]	The synchronous operation was successful,
	results are the return values.
"^running"	The asynchronous operation was successfully
	started. The target is running.
"^error" "," c-string	The operation failed. The c-stringcontains the
	corresponding error message.

21.3.2GDB/MI stream records

GDB internally maintains a number of output streams: the console, the target, and the log. The output intended for each of these streams is funneled through the gdb/mi interface using stream records.

Each stream record begins with a unique prefix character which identifies its stream (see “GDB/MI Output syntax” (page 308)). In addition to the prefix, each stream record contains a string-output. This is either raw text (with an implicit new line) or a quoted C string (which does not contain an implicit new line).

"~" string-outputThe console output stream contains text that should be displayed in the CLI console window. It contains the textual responses to CLI commands.

"@" string-outputThe target output stream contains any textual output from the running target.

"&" string-outputThe log stream contains internal debugging messages being produced by GDB.

21.3.3GDB/MI out-of-band records

Out-of-bandrecords are used to notify the GDB/MI client of additional changes that have occurred. Those changes can either be a consequence of GDB/MI (for example, a breakpoint modified) or a result of target activity (for example, target stopped).

The following is a preliminary list of possible out-of-band records.

"*" "stop"

21.4 GDB/MI command description format

The remaining sections describe blocks of commands. Each block of commands is laid out in a fashion similar to this section.

21.3 GDB/MI output records 311