GDB Basic Debugging

Gcc-g-wall-o Hello hello.c when debugging

GDB Hello-tui

-G: Generate Debug information

-wall: Compiler warning message

-W: Warning message

When GDB is called, the command line specifies-tui, or ctrl+x+a is used in non-TUI mode.

TUI mode: Upper half source, bottom half input gdb command

Break main: The first line of the main function executable code set breakpoints

Break N: Set breakpoint on nth line

Break if condition: conditional breakpoint, meets condition to pause

Break +offset/-offset: Sets a breakpoint before or after the currently selected stack is executing a line of code

Break *address: Set breakpoints at virtual memory address (e.g. source code or shared library not found)

Clear N: Delete N-line Breakpoint

Clear List_insert: Delete all breakpoints for a function

Clear List.c:list_delet: Delete file: All breakpoints for function

Delete 1 3 4: Delete Breakpoint 1 3 4

Delete 1-4: Delete breakpoints 1 to 4

Disable N: Disabling breakpoints

Enable 1 5: Breakpoint 1 5 Enabled

Enable once 3: Temporarily turn on breakpoint 3

Info break: List all breakpoints

Run: Run Program

Run 12 5 6: Pass Parameters 12, 5, 6 to the program

Next: Travel to the next line

Continue: Resuming execution

Tbreak: Create a breakpoint with a valid number of 1

Until: Get out of the loop and stop.

Finish: Run through the program

Print I: Output i

Watch Z: Monitor Z

Watch (z>5): Find the first position where the z-value is greater than 5 during the execution of a program

Stack frame: The runtime information associated with the call is stored in the memory area that is the stack frame, with the value of the function local variable, the function parameter, and the record that called the function location. Each time a function call is made to create a new frame, the function exits when the frame pops out of the stack and releases.

BackTrace: Displays the entire stack, which is the current collection of all frames

Frame N: The current execution function is numbered 0, the frame is 1, and so on

Up: Bring the next frame to the call stack

Down: In the opposite direction of up

GDB Basic Debugging