How much code space do PBP statements use.

[Darrel Taylor]

Version 2.0

This include file adds several more abilities to the idea in post#1.   MPASM Required

Along with measuring the size of a block of code, it can provide information about the size of the PBP Library, User code size (excluding the Library), Total code size, and various individual blocks of code, and those blocks can now be Nested. And best of all, it displays the result in the MicroCode Studio window, instead of having to dig thru the .LST file.


Using a similar example to post#1 ...
It looks something like this ...

<img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=3134" /> <!-- -->

From that you can see that the LCDOUT command used 42 WORDs.

But again, there are 2 parts to code used with PBP. The other part is the Library.
By adding a LibrarySize command, you can see how much library code the LCDOUT command used.
The UserSize command shows the total amount of User Code used (everything but the Library).
And TotalSize is the size of everything (including the Library).

<img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=3135" /> <!-- -->

The results can be turned On/Off by either commenting the DEFINE Measure 1 line, or changing its value to 0. When it's turned off, no messages will be displayed.

StartSize and EndSize are given Unique names and both MUST match exactly (case sensitive).
Start/End segments can be "Nested" or they can "Overlap", doesn't really matter.

INCLUDE "CodeSize.pbp"
DEFINE  Measure 1

row   VAR  BYTE
temp  VAR  BYTE

@  StartSize(Select)
    SELECT CASE row
@     StartSize(Case1)
       CASE 1 : temp = $80
@     EndSize(Case1)
       CASE 2 : temp = $C0
       CASE 3 : temp = $90
       CASE 4 : temp = $D0
    END SELECT
@  EndSize(Select)

@  StartSize(Lookup)
    LOOKUP row,[$80,$80,$C0,$90,$D0],temp
@  EndSize(Lookup)

@  LibrarySize

Which gives these results ...

<img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=3136" /> <!-- -->

Neither the SELECT CASE or LOOKUP statements added any code to the Library, so it shows 1 WORD (goto INIT).

When using either UserSize or TotalSize, they MUST be the LAST lines in the program.

It will work with any 18F or 14-bit chip.
With 18F's it displays results in both BYTEs and WORDs, and the result may differ from the size reported by MPASM because MPASM includes Config words in the total, and doesn't count locations that were skipped with ORG statements. This program shows the Real size.

These routines DO NOT use any code space (flash) or variable space (RAM). So you can safely include it in your program and simply turn it ON/OFF whenever desired.

Download the file below and un-zip it to your PBP folder (the one with PBPW.EXE).
There is only 1 file in the .zip "CodeSize.pbp".