ST20–SWC

15/21

execution against time using X Window System and OSF/Motif on a Sun-4 or Microsoft Windows on

a PC.

As with the execution profiler, the user program is monitored by a profiling kernel. The kernel will slow

the program by less than 5%.

ST20

Quit

Zoom In

Zoom Out

0.000

3.840

7.680

11.520

15.360

19.200

23.040

26.880

30.720

34.560

Figure 11

Example X-Windows display from the utilization monitor

4.3

Test coverage and block profiling tool

This tool monitors test coverage and performs block profiling for an application which has been run

on target hardware.

This tool is able to:

provide an overall test coverage report;

provide per module test coverage reports;

accumulate a single report from multiple test runs;

provide a detailed basic block profiling output by creating an annotated program listing;

provide output that can be fed back into the compiler as a part of its optimization process.

The application program (compiled with the appropriate compiler option) is run and accumulates the

counts in the memory of the target processor. The tool is used to extract the results and save,

accumulate or display them. This application writes the counts into the code area, so the tool cannot

be used with code running from ROM.

Writing coverage file ”square.v” – 40% coverage

Writing coverage file ”comms.v” – 14% coverage

Writing coverage file ”app.v” – 75% coverage

Writing coverage file ”control.v” – 36% coverage

Writing coverage file ”feed.v” – 33% coverage

Writing coverage file ”sum.v” – 40% coverage

Total coverage for bootable 39% over 1 run

Figure 12

Example test coverage summary report

The following is an example of the contents of a coverage file:

|/*

| * facs.c

|*

| * generate factorials

|*

|*/

|

|#include <stdio.h>

|#include <stdlib.h>

|#include <process.h>

|#include <channel.h>

|#include <misc.h>

|#include ”comms.h”

|

|#define TRUE 1

|#define FALSE 0

|

|