The address is any expression resulting in or usable as an address. The address may be replaced with a + (plus sign), which displays the contents of the next address in the default format.
For example, the following are valid addresses:
0xff99 |
An absolute address |
main |
Address of a function |
main+20 |
Offset from a function address |
&errno |
Address of a variable |
str |
A pointer-value variable pointing to a string |
Symbolic addresses used to display memory are specified by preceding a name with an ampersand (&). Function names can be used without the ampersand; &main is equal to main. Registers are denoted by preceding a name with a dollar sign ($).