JPH0728628A - Program correcting device - Google Patents

Abstract

PURPOSE:To display a program after correction without parting a serial flow by deleting branch instructions and outputting the program in form wherein a corrected part of the main program is replaced with a correcting program. CONSTITUTION:When data in execution form which are stored in a 1st data storage part 33 are corrected, the address (correction address) of the data to be corrected and correcting data represented in symbol form are inputted from an input device 1. A 1st registration part 24 checks whether or not the data in the symbol form are a branch instruction, converts the data into data in execution form when the data are not the branch instruction, and substitutes them for the data in the address of the corrected place in the data stored in the 1st data storage part 33. When the data are the branch instruction, on the other hand, the address of a branch instruction from a part other than the correction area to the correction area and the address of a branch instruction from the correction area to a part other than the correction area are registered in a correction address storage part 32, and the data in symbol form are converted into data in execution form to substitute for the data in the address of the corrected place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program correction device, and more particularly to a program correction device for correcting a program of a serial processing type processor represented by a general-purpose microprocessor and checking the corrected program.

[0002]

2. Description of the Related Art Conventional program modifying means for modifying a program of a serial processing type processor typified by a general-purpose microprocessor displays a branch instruction to a modification area when the program is modified. A series of flows having the above meanings are displayed in a divided manner, and even if the source program is modified after the evaluation, it becomes different from the program modified during the evaluation.

[0003]

As described above, the conventional program correcting means has a drawback in that the corrected program is difficult to view because a series of streams having meaning on the program is displayed in a divided manner. have. In addition, there is a problem that the programs modified during the evaluation cannot be compared in order to check the validity of the modification result of the source program.

[0004]

A first program correction device of the present invention comprises a first data storage section for storing data of an execution format of a microcomputer program, and data stored in the first data storage section. Hold a display device in a symbolic form input from the input device, and a storage device having a correction address storage unit for storing the address of the correction place in the memory and the address when returning to the correction place from the program added by the correction. And an address holding unit for checking whether or not the display address input from the input device is a branch instruction, and if it is not a branch instruction, it converts symbolic data into executable data and stores the first data in the storage device. A first registration unit that replaces the data of the address of the corrected portion in the data stored in the storage unit, and the first data storage unit A conversion unit for reading the data of the execution format from the above, converting it into the data of the symbol format and sending it to the output device, and the display address held by the address holding unit as the correction address, the correction address of the storage device. A search unit that checks whether it is registered in the storage unit,
A second conversion unit for converting the data displayed in the symbol format into the execution format data, and the execution format data from the second conversion unit is overwritten on the data stored in the first data storage unit. And a data processing unit having a second registration unit.

According to a second program modification device of the present invention, a second data storage unit for storing a modified source program is provided in the storage device of the first program modification device, and the data processing unit and the modified program A comparison unit is provided which compares the corrected source program stored in the second data storage unit and outputs the difference.

A third program correction device of the present invention is a first data storage section for storing data of an execution format of a microcomputer program, and a corrected portion in the data stored in the first data storage section. A storage area having a correction area storage section for storing the address of the address and the address when returning to the correction point from the program added by the correction, and an address holding section for holding the display address in the symbol format input from the input device, A first conversion unit that reads out data in the execution format from the first data storage unit, converts it into data in the symbol format, and sends it to the output device; and the storage device in which the display address converted by the first conversion unit is used as a correction address. A search unit for checking whether or not it is registered in the correction area storage unit, and a display ad in the symbol format input from the input device. Data processing that includes a second conversion unit that converts the execution format data into execution format data and a second registration unit that overwrites the execution format data from the second conversion section with the data stored in the correction area storage unit. And a section.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of the present invention, FIG. 2 is a flow chart showing the operation of the embodiment of FIG. 1 at the time of inputting correction data, and FIG. 3 is an output of correction data of the embodiment of FIG. FIG. 4 is a flow chart showing the operation at the time, and FIG. 4 is a format diagram showing an example of the correction program according to the embodiment of FIG.

The embodiment shown in FIG. 1 comprises an input device 1 such as a keyboard, a data processing device 2 which operates under the control of a program, a storage device 3 for storing information, and an output device 4 such as a printer device. ing.

The data processing device 2 includes an address holding unit 21.
, Search unit 22, first conversion unit 23, and first registration unit 24
And a second conversion unit 25 and a second registration unit 26.

The storage device 3 includes a correction area storage unit 31,
It has a correction address storage unit 32 and a first data storage unit 33 for storing program data (data) in an executable format. The corrected address storage unit 32 stores, in a table format, an address of a corrected portion in the data stored in the first data storage unit 33 and an address when the program added by the correction returns to the corrected portion.

Next, the operation of the program correction device configured as described above will be described with reference to FIGS.

First, the operation of storing data in the modified address storage unit 32 will be described with reference to FIGS. 1 and 2.

When the execution format data stored in the first data storage unit 33 is to be corrected, the address of the data to be corrected (correction address) and the correction data expressed in the symbol format are input device 1. Enter from. These data are input and registered in the first registration unit 24.

The first registration unit 24 checks whether or not the symbol format data is a branch instruction (step 11 in FIG. 2). If it is not a branch instruction, the symbol format data is converted into the execution format data. , The data stored in the first data storage unit 33 is replaced with the data of the address of the corrected portion (step 16). In the case of a branch instruction, it is checked whether the input correction address is the address of the correction area stored in the correction area storage unit 31 (step 12).

If the input correction address is not the correction area address stored in the correction area storage unit 31, it is checked whether or not the branch destination of the input branch instruction is the correction area address (step 13). If it is not the address of the correction area, the process proceeds to step 16. If it is the address of the correction area, the input correction address is registered in the correction area storage unit 31 (step 14) and the process proceeds to step 16.

If the correction address input in step 12 is the address of the correction area stored in the correction area storage unit 31, it is checked whether the branch destination of the input branch instruction is the address of the correction area ( Step 1
5), if it is the address of the correction area, step 16
If the address is not in the correction area, the process proceeds to step 14.

In this way, the address of the branch instruction from the area other than the modification area to the modification area and the address of the branch instruction from the modification area to the area other than the modification area are registered in the modification address storage unit 32.

Next, the operation of displaying the corrected program will be described with reference to FIGS. 1 and 3.

The display address from the input device 1 is held in the address holding unit 21. The search unit 22 checks whether or not the display address held by the address holding unit 21 is registered as a corrected address in the corrected address storage unit 32 (steps 41 and 42 in FIG. 3).

If the same address as the display address is not registered in the correction address storage unit 32, the execution format data indicated by the display address is read, converted into symbol format data and sent to the output device. (Step 4
5).

When the same address as the display address is registered in the corrected address storage unit 32, the execution format data indicated by the display address is stored in the first data storage unit 33.
Is read out, it is checked whether or not it is a branch instruction (step 43), and if it is not a branch instruction, the process proceeds to step 45. If it is a branch instruction, the data of the display address held in the address holding unit 21 is changed to the branch destination address (step 44), and the process returns to step 41.

FIG. 4 shows an example in which the above operation is applied to a specific program.

As shown in FIG. 4 (a), an error was found in "WORD3" which is a part of the program (A) 35, and "WORD10-WORD15" shown in the correction program (correction area) 36 (A) was added. When you do
As shown in FIG. 4B, “W” of the program (A) 35
"WORD" which is a branch instruction from "ORD3" to "WORD10"
"WORD1" which is a branch instruction to "WORD4" next to "WORD15" of the correction program (correction area) 36 by changing it to "ORD3a" to be the program (B) 37.
6) is added and the correction program (correction area) (B) 3
8

In this case, the address of the registered address "AD
In order to change “WORD3” of “3” into “WORD3a”, the data of “WORD3a” displayed in the symbol format is input from the input device 1.

The first registration unit 24 uses the data "WORD3
It is checked whether "a" is a branch instruction from a correction area to a correction area or a correction area to a non-correction area. In this case, since "WORD3a" is a branch instruction from the area other than the correction area to the correction area,
The address "AD3" which is the registered address of "WORD3a" is registered in the corrected address storage unit 32.

The second conversion unit 25 converts the data of "WORD3a" displayed in the symbol format into the data of the execution format and sends it to the second registration unit 26. The second registration unit 26 overwrites the data “WORD3a” with the data “WORD3” at the address “AD3” of the first data storage unit 33 that stores the data of the execution format.

Next, the correction data "W" is added to the correction area.
In order to register "ORD10", the data "WORD10" displayed in symbolic form and its address "AD10" are input from the input device 1.

The first registration unit 24 uses the data "WORD1.
It is checked whether "0" is a branch instruction from the area other than the modification area to the modification area or a branch instruction from the modification area to areas other than the modification area. In this case, since “WORD 10” is neither a branch instruction from a correction area to a correction area nor a correction area to a correction area, the correction address storage unit 32 does not register anything.

The second conversion unit 25 converts the data “WORD10” displayed in the symbol format into the data of the execution format and sends it to the second registration unit 26. The second registration unit 26 writes the data “WORD10” in the area corresponding to the address “AD10” of the first data storage unit 33.

Similarly, the data "WORD11" to data "WORD15" are also registered in the first data storage unit 33.

Finally, the data of "WORD16" which is a branch instruction to "WORD4" is input from the input device 1. Since "WORD4" is a branch instruction from the correction area to the area other than the correction area, the same operation as when the "WORD3a" is input causes the correction address storage unit 32 to store "WORD4".
Address "AD16" which is the registered address of "RD16"
Is registered, and the address “AD1 of the first data storage unit 33 is registered.
Data of the execution format of "WORD16" is written in the area corresponding to "6".

When displaying the corrected address and the execution format data registered by the above operation, the following operation is performed.

When the data of the execution format of the program (B) 37 stored in the first data storage unit 33 is sequentially converted into symbolized data from the address "AD1" which is the head address thereof, and output, First, the address "AD1"
Is input from the input device 1. This address "AD1"
Is stored in the address storage unit 21 and supplied to the search unit 22. The search unit 22 uses the modified address storage unit 32.
Check whether it is the same as the correction address stored in. In this case, since the correction addresses stored in the correction address storage unit 32 are the address “AD3” and the address “AD16”, they do not match. The first conversion unit 23 reads the execution format data designated by the address “AD1” from the first data storage unit 33, converts it into the symbol format data “WORD1”, and sends it to the output device 4. The output device 4 receives the input data “WOR
D1 ”is printed. When the printing is completed, the address held in the address holding unit 21 is advanced from the address "AD1" to the address "AD2".

The same operation is performed for the address "AD2", and the symbol data "WORD2" is printed.

Next, it is checked whether or not the address "AD3" is the same as the modified address stored in the modified address storage unit 32. In this case, since the address “AD3” is registered in the corrected address storage unit 32, the search unit 22 uses the first conversion unit 23 and the address “AD3” stored in the first data storage unit 33. The data corresponding to the above is read, and the address held in the address holding unit 21 is set to “WORD3a” which is the branch destination of “WORD3a”.
Change to the address "AD10" of "10".

Since the address of the address holding unit 21 is changed to the address "AD10", the search unit 22 is
Corrected address storage unit 32 for address "AD10"
Check whether it is the same as the correction address stored in. In this case, since the address “AD10” is not stored in the corrected address storage unit 32, the address “AD10” is
By the same operation as in the case of "1", the data "WORD10"
Is printed. The above-mentioned operation is continued with the address "AD15".
Also do.

As for the address "AD16", since the address "AD16" is registered in the corrected address storage unit 32, the search unit 22 uses the first conversion unit 23 as in the case of the address "AD3". First data storage unit 3
The data corresponding to the address "AD16" stored in No. 3 is read, and the address held in the address holding unit 21 is changed to "WORD16" which is the branch destination of "WORD16".
4 "address" AD4 ".

Since the address "AD4" is not stored in the corrected address storage unit 32, the data "WORD4" is printed by the same operation as the case of the address "AD1". The same operation is repeated until the address "AD9".

By the above operation, the correction programs "WORD10" to "WORD15" are changed to "WORD3".
It is printed in the format replaced with.

FIG. 5 is a block diagram showing a second embodiment of the present invention.

In this embodiment, a comparison unit is added to the data processing device and a second data storage unit is added to the storage device in addition to the first embodiment of FIG.

That is, as shown in FIG. 5, the data processing device 5 has a comparison part 57 between the first conversion part 23 and the output device 4, and the storage device 6 is connected to the comparison part 57. The second data storage unit 64 is provided. The second data storage unit 64 stores data obtained by modifying a basic symbolized program (this is called a source program). (The correction of the source program can be handled in the same way as an ordinary text file, so deletion and insertion can be performed freely.) The program correction device configured in this way is the same as that of the first embodiment. In the second data storage unit 64, a program in a symbol format in which a branch instruction from the correction area to the correction area and a branch instruction from the correction area to the area other than the correction area are deleted is supplied to the output device 4. The comparison unit 57 compares the stored corrected source program with the difference and outputs the difference to the output device 4.

Other configurations and operations are the same as those in the first embodiment.

In the present embodiment, it is also possible to store the modified data of the source program in the execution format in the second data storage section 64 and compare the execution format data in the comparison section 57. The same effect can be obtained.

FIG. 6 is a block diagram showing the third embodiment of the present invention, and FIG. 7 is a flow chart showing the operation of the embodiment of FIG.

This embodiment differs from the first embodiment in FIG. 1 in that the first registration unit is deleted from the data processing device, the modified address storage unit is deleted from the storage device, and the search unit in the data processing device is deleted. The arrangement of the first conversion unit, the second conversion unit, and the second registration unit is changed, and the connection of the correction area storage unit and the first data storage unit of the storage device to the data processing device is changed.

When the program is modified by the program modifying device configured as described above, the symbol format data input from the input device 1 is converted into the execution format data by the second conversion section 25, and the first data storage section is used. It replaces the data stored in 33 (same as step 16 in FIG. 2).

When the corrected program is displayed, the display address from the input device 1 is held in the address holding unit 21 of the data processing device 7, as shown in FIG. The first conversion unit 23 reads the data in the execution format designated by the display address held by the address holding unit 21 from the first data storage unit 33 of the storage device 8 and converts it into the data in the symbol format (see FIG. 7). Step 91). The retrieval unit 22 determines whether or not the symbolic data is a branch instruction (step 92), and if it is not a branch instruction, sends it to the output device for printing (step 97).

When the symbolic data is a branch instruction, it is checked whether the display address held by the address holding unit 21 is the address of the correction area stored in the correction area storage unit 31 (step 93). .

If the display address is not the address of the correction area, it is checked whether the branch destination of the input branch instruction is the address of the correction area (step 94). If the branch destination of the input branch instruction is not the address of the correction area. Moves to step 97.

When the branch destination of the input branch instruction is the address of the correction area, the display address held in the address holding unit 21 is changed to the branch destination address (step 95).

When the display address is the address of the correction area stored in the correction area storage unit 31 in step 93, it is checked whether or not the branch destination of the input branch instruction is the address of the correction area (step 96). If it is the address of the correction area, the process proceeds to step 97, and if it is not the address of the correction area, the process proceeds to step 95.

With the above operation, the same effect as that of the first embodiment can be obtained.

[0055]

As described above, the program correcting device of the present invention deletes a branch instruction from the program to the modifying program and a branch instruction from the modifying program to the program, and modifies the modified portion of the program. By outputting the modified program to the output device, it is possible to display the modified program without interrupting a series of flows that have meaning on the program, and thus it is easy to see the modified program. There is an effect that can be done.

Further, by comparing the corrected program with the corrected source program by the comparing section and outputting the difference, it is possible to confirm the correction of the source program.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flow chart showing an operation when inputting correction data in the embodiment of FIG.

FIG. 3 is a flowchart showing an operation when outputting modified data in the embodiment of FIG.

FIG. 4 is a format diagram showing an example of a correction program according to the embodiment of FIG.

FIG. 5 is a block diagram showing a second embodiment of the present invention.

FIG. 6 is a block diagram showing a third embodiment of the present invention.

7 is a flowchart showing the operation of the embodiment of FIG.

[Explanation of reference signs] 1 input device 2/5/7 data processing device 3/6/8 storage device 4 output device 11-16.41-45.91-97 step 21 address holding unit 22 search unit 23 first conversion unit 24 first registration unit 25 second conversion unit 26 second registration unit 31 correction area storage unit 32 correction address storage unit 33 first data storage unit 35 program (A) 36 correction program (correction area) 37 program (B) 38 correction Program (correction area) (B) 57 Comparison unit 64 Second data storage unit

Claims (3)

[Claims] 1. A first data storage section for storing data of an execution format of a microcomputer program, an address of a corrected portion in data stored in the first data storage section, and a program added by the correction. From the input device, a storage device having a correction address storage unit for storing the address for returning to the correction location from the input device, an address holding unit for holding the display address in the symbol format input from the input device, and the display address input from the input device Is a branch instruction, and if it is not a branch instruction, the symbol format data is converted into the execution format data, and the data of the corrected portion of the data stored in the first data storage unit of the storage device is checked. The first registration unit that replaces the address data and the execution format data are read from the first data storage unit and converted into symbol format data. And a search unit for checking whether or not the display address held by the address holding unit is registered as a correction address in the correction address storage unit of the storage device. A second conversion unit for converting the data displayed in the symbolic form into the data in the execution form, and the data in the execution form from the second conversion unit overwriting the data stored in the first data storage unit. And a data processing unit having a second registration unit for performing the program correction device. 2. A second data storage unit for storing a corrected source program is provided in a storage device, and the corrected program is compared with the corrected source program stored in the second data storage unit. 2. The program correction device according to claim 1, further comprising a comparison unit for outputting the difference between the data processing units. 3. A first data storage section for storing data of an execution format of a microcomputer program, an address of a corrected portion in data stored in the first data storage section, and a program added by the correction. From the first data storage unit, a storage device having a correction area storage unit for storing an address when returning to the correction location from the first data storage unit, and an address holding unit for holding the display address in the symbol format input from the input device. A first conversion unit that reads out data, converts it into data in a symbol format and sends it to an output device, and the display address converted by the first conversion unit is registered as a correction address in the correction area storage unit of the storage device. And a search unit for checking whether or not the display address in the symbol format input from the input device is converted into data in the execution format. A conversion unit,
And a data processing unit having a second registration unit for overwriting the data stored in the correction area storage unit with the execution format data from the second conversion unit.