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27.20 GDB/MI Target Manipulation Commands

The -target-attach Command

Synopsis

 -target-attach pid | gid | file

Attach to a process pid or a file file outside of GDB, or a thread group gid. If attaching to a thread group, the id previously returned by ‘-list-thread-groups --available’ must be used.

GDB Command

The corresponding GDB command is ‘attach’.

Example

(gdb)
-target-attach 34
=thread-created,id="1"
*stopped,thread-id="1",frame={addr="0xb7f7e410",func="bar",args=[]}
^done
(gdb)

The -target-detach Command

Synopsis

 -target-detach [ pid | gid ]

Detach from the remote target which normally resumes its execution. If either pid or gid is specified, detaches from either the specified process, or specified thread group. There’s no output.

GDB Command

The corresponding GDB command is ‘detach’.

Example

(gdb)
-target-detach
^done
(gdb)

The -target-disconnect Command

Synopsis

 -target-disconnect

Disconnect from the remote target. There’s no output and the target is generally not resumed.

GDB Command

The corresponding GDB command is ‘disconnect’.

Example

(gdb)
-target-disconnect
^done
(gdb)

The -target-download Command

Synopsis

 -target-download

Loads the executable onto the remote target. It prints out an update message every half second, which includes the fields:

section

The name of the section.

section-sent

The size of what has been sent so far for that section.

section-size

The size of the section.

total-sent

The total size of what was sent so far (the current and the previous sections).

total-size

The size of the overall executable to download.

Each message is sent as status record (see GDB/MI Output Syntax).

In addition, it prints the name and size of the sections, as they are downloaded. These messages include the following fields:

section

The name of the section.

section-size

The size of the section.

total-size

The size of the overall executable to download.

At the end, a summary is printed.

GDB Command

The corresponding GDB command is ‘load’.

Example

Note: each status message appears on a single line. Here the messages have been broken down so that they can fit onto a page.

(gdb)
-target-download
+download,{section=".text",section-size="6668",total-size="9880"}
+download,{section=".text",section-sent="512",section-size="6668",
total-sent="512",total-size="9880"}
+download,{section=".text",section-sent="1024",section-size="6668",
total-sent="1024",total-size="9880"}
+download,{section=".text",section-sent="1536",section-size="6668",
total-sent="1536",total-size="9880"}
+download,{section=".text",section-sent="2048",section-size="6668",
total-sent="2048",total-size="9880"}
+download,{section=".text",section-sent="2560",section-size="6668",
total-sent="2560",total-size="9880"}
+download,{section=".text",section-sent="3072",section-size="6668",
total-sent="3072",total-size="9880"}
+download,{section=".text",section-sent="3584",section-size="6668",
total-sent="3584",total-size="9880"}
+download,{section=".text",section-sent="4096",section-size="6668",
total-sent="4096",total-size="9880"}
+download,{section=".text",section-sent="4608",section-size="6668",
total-sent="4608",total-size="9880"}
+download,{section=".text",section-sent="5120",section-size="6668",
total-sent="5120",total-size="9880"}
+download,{section=".text",section-sent="5632",section-size="6668",
total-sent="5632",total-size="9880"}
+download,{section=".text",section-sent="6144",section-size="6668",
total-sent="6144",total-size="9880"}
+download,{section=".text",section-sent="6656",section-size="6668",
total-sent="6656",total-size="9880"}
+download,{section=".init",section-size="28",total-size="9880"}
+download,{section=".fini",section-size="28",total-size="9880"}
+download,{section=".data",section-size="3156",total-size="9880"}
+download,{section=".data",section-sent="512",section-size="3156",
total-sent="7236",total-size="9880"}
+download,{section=".data",section-sent="1024",section-size="3156",
total-sent="7748",total-size="9880"}
+download,{section=".data",section-sent="1536",section-size="3156",
total-sent="8260",total-size="9880"}
+download,{section=".data",section-sent="2048",section-size="3156",
total-sent="8772",total-size="9880"}
+download,{section=".data",section-sent="2560",section-size="3156",
total-sent="9284",total-size="9880"}
+download,{section=".data",section-sent="3072",section-size="3156",
total-sent="9796",total-size="9880"}
^done,address="0x10004",load-size="9880",transfer-rate="6586",
write-rate="429"
(gdb)

GDB Command

No equivalent.

Example

N.A.

The -target-select Command

Synopsis

 -target-select type parameters …

Connect GDB to the remote target. This command takes two args:

type

The type of target, for instance ‘remote’, etc.

parameters

Device names, host names and the like. See Commands for Managing Targets, for more details.

The output is a connection notification, followed by the address at which the target program is, in the following form:

^connected,addr="address",func="function name",
  args=[arg list]

GDB Command

The corresponding GDB command is ‘target’.

Example

(gdb)
-target-select remote /dev/ttya
^connected,addr="0xfe00a300",func="??",args=[]
(gdb)

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