JPH0198036A - Program debugging system - Google Patents

Abstract

PURPOSE:To improve the efficiency of a debugging job by correcting simulatively the relevant part of a program when an error of the trace information is detected and continuing the debugging job. CONSTITUTION:The trace output instruction signal set by the execution of a program is received and written into a trace information memory 2 via an output control part 6. A debug information output deciding part 4 compares the trace information with the correct answer data. When no coincidence is obtained between said information and data, the stored 2 trace information is written into a debug information memory part 5 and the correct answer data is set at the corresponding part where the relevant trace information of the program is delivered. While it is prevented to write the debug information given from the part 2 to the part 5 when the coincidence is obtained from said comparison. Therefore a correct answer data setting control part 9 sets the correct answer data at the relevant part of the program and corrects simulatively the error of the program when no coincidence is obtained from said comparison.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application J] The present invention relates to a device for debugging a computer program, and more particularly to a program debugging method for controlling the setting of debugging correction data.

[Prior Art J] Fig. 3 shows a conventional debugging device as shown in Japanese Patent Application No. 62-89555, for example.

In FIG. 3, l is a correct data setting section, 2 is a trace information storage section, 3 is a correct data storage section, 4 is a debug information output determination section (transfer control means), 5 is a debug information storage section,
8 is an input control section, 6 is an output control section, and 7 is an initialization control section.

FIG. 4 is a flowchart showing the steps of the debugging method in the debugging device shown in FIG.
(14) indicates each step.

Next, the operation will be explained with reference to the $4 diagram.

5'/(Insert a trace output command at the checkpoint where you want to obtain trace information of the target program (Step S 'I' (1)).Next, select the checkpoint of the program from the correct data setting section IK. Set the correct answer data for each checkpoint (step 5T(2)) and store it in the correct data storage unit 3 (step 5T(3))11.Next, when the microprocessor executes the initialization command (Stella 7'5T( 4)), the initialization control unit 7 receives and receives the initial ratio multiplication from the microprocessor (step ST (5)), initializes the trace information storage unit 2 and the depack information storage unit 5 (step S
T(6)). Next, the program to be depacked is executed (step 5T(7)). Each time a set checkpoint is passed through the execution of this glog, an inserted (incorporated) trace output command signal is sent and received, and trace information is written to the trace information storage unit 2 via the output control unit 6 (step !9 T (8)
). Next, the Depack information output determination unit 4 compares whether the trace information and the correct answer data match,
If the determination is positive (step ST (9)), and No (if they do not match), the trace information stored in the trace information storage unit 2 is written as depack information to the depack information storage unit 5 (step ST (10)). ), return to step 5T(1).

On the other hand, if the determination in step 5T(9) is YES, the step S
T (11)), executes the following instruction 6.

Next, step S T waits for the end of the program execution.
(12) After the execution of the program, the input control section 8 reads out the depack information detected by the depack information storage section 5KJI (in case the trace information and the correct data do not match) according to the input command input from the processor.
T (13)), processor KE sends step S
T(14), end the control.

[Problem to be solved by the invention] Since the conventional debugging method is as described above, once an error in the program is revealed by certain trace information, it is assumed that the program is malfunctioning, and then There is no reliability as to whether the output value of the trace information is correct or incorrect, and in order to detect errors in the program after passing the above trace output command, it is necessary to modify the program and debug it again on Kuue. However, in order to uncover all errors, the program must be modified and debugged many times, resulting in a significant drop in debugging efficiency.

This invention was made in order to solve the above-mentioned problems, and it is possible to make reliable judgments of correctness and error for all trace information output values during - times of program startup, and also to The purpose of this invention is to obtain a debugging method that can detect all program errors determined by trace information in a single debugging process.

Means for Solving Problem c] The program debugging method according to the present invention/c adopts means for comparing the trace information and the correct data and setting the correct data in the corresponding part of the program that outputs the trace. This is what I did.

[Operation J] The program debugging method in this invention compares the trace information with the correct data, and when it is determined that there is an error, sets the correct data in the corresponding part of the program, corrects the program error in a simulated manner, and then debugs the program. Make it continue.

[Embodiment of the Invention] An embodiment of the invention will be described below. FIG. 1 is a flowchart explaining the operation procedure of the debugging method according to Jin's invention〆ζ.
~5Tl16 represents each step.

Further, STI to ST6 represent the same geographies as the geographies with the same reference numerals described in the explanation of FIG. 4 above. After the operations of ST1 to ST6, the execution of the program to be debugged is started (8T107), and the trace output command signal set (incorporated) by the execution of this program is sent and received via the output control unit 6. and write it into the trace information storage section 2. Next, the debug information output determination unit 4 compares whether or not the correct answer data recorded in the trace information recorded in nIJ matches or not, and determines whether the data matches the correct answer data recorded in the trace information or not.
If so, the trace information stored in the trace information storage unit 2 and debug information are written to the debug information storage s5 (ST112), and the correct data is set in the corresponding part of the program where the trace is output (EI
On the other hand, if the determination of STill is YES, writing of the debug information read from the trace information storage section 2 to the debug information storage section 5 is inhibited (8T114).

ST 110 to ST 113 or ST 1 above
The operations up to 14 are continued until all trace information is output and the program flash is completed (8T108 and 5TI09). Next, the explanation will be given with reference to Figure 2. Second
Incidentally, silkworms 81 to 8 in the figure have the same functions as the same numbers in FIG. This allows errors in the program to be corrected in a simulated manner.

[Effects of the Invention] As described above, according to the present invention, when an error in trace information is detected, the relevant part of the program is modified in a simulated manner and debugging is performed in R1&i. This has the effect of significantly improving the efficiency of debugging work because it has a certain level of reliability and can detect all program errors that could be determined during - times of Glogzum activations in a single debugging session.

[Brief explanation of the drawing]

FIG. 1 is a flowchart explaining the procedure of the debugging method according to the present invention, FIG. 2 is a block diagram of a debugging device which is an embodiment of the debugging method according to the present invention, and FIG. 3 is a block diagram of a debugging device in a conventional debugging method. 4 are flowcharts showing the procedure of the conventional debugging method. In the figure, l is a correct data setting section, 2 is a trace information storage section, 3 is a correct data storage section, 4 is a debug information output determination section, 5 is a debug information storage section, 6 is an output control section, and 7
8 is an initialization 'MJm section, 8 is an input side a1 section, and 9 is a correct data setting control section. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] Correct data storage means for storing in advance correct data corresponding to trace information to be output based on a trace output instruction inserted at an arbitrary checkpoint of a program; and a trace output instruction inserted at an arbitrary checkpoint of the program. trace information storage means for storing the trace information output based on the trace information storage means, and the trace information stored in the trace information storage means and the correct answer data stored in the correct answer data storage means are compared, and the trace information transfer control means for controlling transfer of the information to the processor, when the trace information differs from the correct data, correct data is set to the corresponding erroneous part of the program. A program debugging method characterized by making it possible to continue debugging.