Intel XENIX 286 Programmers Guide (86) - Tenox.tc

XENIX Programming adb: Program Debugger
Since execution to this point caused no errors, you can remove the first breakpoint by
typing
f:dl
and continue the program by typing
:co
adb displays the message
sample: running
and starts the program at the next instruction. Execution continues until the next
breakpoint where adb displays the message
breakpoint _ g: push bp
You can now trace the path of execution by typing
$c
The command shows that only two functions are active: main and f.
f(1.,1.)
- main (1.,470.)
from main + 6.
from -start + 114.
Although the breakpoint has been set at the start of function g, it will not be listed in
the backtrace until its first few instructions have been executed. To execute these
instructions, type
,S:s
adb single-steps the first five instructions. Now you can list the backtrace again. Type
$c
This time the list shows three active functions:
g (2.,3.)
- f(1.,1.)
- main (1.,470.)
from f + 48.
from - main + 6.
from - start + 114.
6-2 1