GDB/MI Target Manipulation - Debugging with GDB
Description: Debugging with GDB

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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)