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25.4 TUI-specific Commands

The TUI has specific commands to control the text windows. These commands are always available, even when gdb is not in the TUI mode. When gdb is in the standard mode, most of these commands will automatically switch to the TUI mode.

Note that if gdb's stdout is not connected to a terminal, or gdb has been started with the machine interface interpreter (see The gdb/mi Interface), most of these commands will fail with an error, because it would not be possible or desirable to enable curses window management.

tui enable
Activate TUI mode. The last active TUI window layout will be used if TUI mode has prevsiouly been used in the current debugging session, otherwise a default layout is used.
tui disable
Disable TUI mode, returning to the console interpreter.
info win
List and give the size of all displayed windows.
layout name
Changes which TUI windows are displayed. In each layout the command window is always displayed, the name parameter controls which additional windows are displayed, and can be any of the following:
next
Display the next layout.
prev
Display the previous layout.
src
Display the source and command windows.
asm
Display the assembly and command windows.
split
Display the source, assembly, and command windows.
regs
When in src layout display the register, source, and command windows. When in asm or split layout display the register, assembler, and command windows.

focus name
Changes which TUI window is currently active for scrolling. The name parameter can be any of the following:
next
Make the next window active for scrolling.
prev
Make the previous window active for scrolling.
src
Make the source window active for scrolling.
asm
Make the assembly window active for scrolling.
regs
Make the register window active for scrolling.
cmd
Make the command window active for scrolling.

refresh
Refresh the screen. This is similar to typing C-L.
tui reg group
Changes the register group displayed in the tui register window to group. If the register window is not currently displayed this command will cause the register window to be displayed. The list of register groups, as well as their order is target specific. The following groups are available on most targets:
next
Repeatedly selecting this group will cause the display to cycle through all of the available register groups.
prev
Repeatedly selecting this group will cause the display to cycle through all of the available register groups in the reverse order to next.
general
Display the general registers.
float
Display the floating point registers.
system
Display the system registers.
vector
Display the vector registers.
all
Display all registers.

update
Update the source window and the current execution point.
winheight name +count
winheight name -count
Change the height of the window name by count lines. Positive counts increase the height, while negative counts decrease it. The name parameter can be one of src (the source window), cmd (the command window), asm (the disassembly window), or regs (the register display window).
tabset nchars
Set the width of tab stops to be nchars characters. This setting affects the display of TAB characters in the source and assembly windows.