- Limitation:
- EGTAPI can
only display
list elements that has
the following format:
+---------------+ | int value | +---------------+ | list next | +---------------+
- EGTAPI can
only display
list elements that has
the following format:
- To view the
values in
list variables:
- Click on the
List tab:
In this example, EGTAPI is displaying the values in the list head --- this list has 3 elements
- Click on the
List tab:
- When you do CS255 homeworks, the
professor will have provided
a start up file to
display the
necessary information of the
program and you do
not need to
add more
list displays
However, if you want to experiment with EGTAPI (to learn more about assembler programming), in a later section below I will discuss what I did to display the list pointed to by the MyList variable.
- Facts:
- A list typed variable
is a program variable that contains
the address of
a list element
- Each list element contains a list typed variable called next that "points" to (= stores the address of) the next list element
- A list typed variable
is a program variable that contains
the address of
a list element
- There are 2 ways to
display
a list typed variable in
EGTAPI:
- Display
only the
list element pointed to
by a list typed variable
- Display
all the
list element pointed to
by a list typed variable
Meaning:
- Display the list element pointed to by a list typed variable
- Then display the list element pointed to by the next variable inside the list variable in (1)
- Then display the list element pointed to by the next variable inside the list variable in (2)
- And so on, until next is equal to null (= 0)
- Display
only the
list element pointed to
by a list typed variable
- To display the
value in a list variable that is
defined by
ds or
dc:
- Click on the
List tab:
- Type the
the name (= label) of
the list variable
(must be .global-ed) in the
box:
(Since EGATPI can only display one kind of list elements, you don't need to tell EGTAPI anything else about the list element structure)
- Select
whether you want to:
- view only the
element pointed to by the
list variable:
- Uncheck the
Follow Link box
- Uncheck the
Follow Link box
- view all the
element in the
list that starts at the
list variable:
- Check the
Follow Link box
- Check the
Follow Link box
And click on the Add button
(I checked the Follow Link to display the head list variable that you see in the above example)
- view only the
element pointed to by the
list variable:
- Click on the
List tab: