Debugging with GDB
`b' cannot be used because these format letters are also
used with the
x command, where `b' stands for "byte";
see section Examining memory.
This is a way of removing
one word from the stack, on machines where stacks grow downward in
memory (most machines, nowadays). This assumes that the innermost
stack frame is selected; setting
$sp is not allowed when other
stack frames are selected. To pop entire frames off the stack,
regardless of machine architecture, use
see section Returning from a function.
If you choose a port number that
conflicts with another service,
gdbserver prints an error message
`gdb-4.14/gdb/refcard.ps' of the version 4.14
If you have a more recent version of GDB than 4.14,
look at the `README' file in the sources; we may have improved the
installation procedures since publishing this manual.