Debug Manual

Debug Commands
Debug Manual—421921-003
4-49
FNL Command
Examples
106,00,00014-FN UC.1, 1, 3 & 2
106,00,00014-FN 5, 23 & 2
248,01,00023-FN N 0x80020000, 0x33 ! Find the number 0x33 starting at
! the specified RISC address.
FNL Command
The FNL command searches memory to find a 32-bit number. The FNL command
starts at a specified address and searches memory until one of the following occurs:
•
A word is reached whose contents logically ANDed with mask, and it equals the
result of value logically ANDed with mask.
•
A byte address ending in 17 binary zeros is reached.
The form of the FNL command is:
address
is the address at which the FNL command starts to search memory. The address
parameter must be on an even byte boundary. For more information, see Address
Syntax on page 3-12.
value
is any expression that evaluates to a valid 32-bit number.
mask
is any expression that evaluates to a valid 32-bit number.
Considerations
•
The FNL command has a default that provides a shorthand way of finding repeated
occurrences of a value. If you execute an FNL command and a match is found,
Debug responds with the standard prompt followed by (FNL). For example:
251,06,00024-(FNL)
If you then press RETURN, the effect is the same as entering an FNL command
with no parameters; that is, Debug continues searching for the same value starting
at the address where the previous FNL command terminated. You can continue
pressing RETURN in this manner until the Debug prompt does not contain (FNL)
(indicating that no match was found).
FNL [ address [ , value ] [ & mask ] ]