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27.2.2 GDB/MI Output Syntax

The output from GDB/MI consists of zero or more out-of-band records followed, optionally, by a single result record. This result record is for the most recent command. The sequence of output records is terminated by ‘(gdb)’.

If an input command was prefixed with a token then the corresponding output for that command will also be prefixed by that same token.

output

( out-of-band-record )* [ result-record ] "(gdb)" nl

result-record

[ token ] "^" result-class ( "," result )* nl

out-of-band-record

async-record | stream-record

async-record

exec-async-output | status-async-output | notify-async-output

exec-async-output

[ token ] "*" async-output

status-async-output

[ token ] "+" async-output

notify-async-output

[ token ] "=" async-output

async-output

async-class ( "," result )* nl

result-class

"done" | "running" | "connected" | "error" | "exit"

async-class

"stopped" | others (where others will be added depending on the needs—this is still in development).

result

variable "=" value

variable

string

value

const | tuple | list

const

c-string

tuple

"{}" | "{" result ( "," result )* "}"

list

"[]" | "[" value ( "," value )* "]" | "[" result ( "," result )* "]"

stream-record

console-stream-output | target-stream-output | log-stream-output

console-stream-output

"~" c-string

target-stream-output

"@" c-string

log-stream-output

"&" c-string

nl

CR | CR-LF

token

any sequence of digits.

Notes:

See GDB/MI Stream Records, for more details about the various output records.


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