JPS63180129A - Program connection system - Google Patents

Abstract

PURPOSE:To realize the mutual calls between different languages by setting a processing area needed for execution of the program of the called language via a processing area setting means. CONSTITUTION:In case a C-language program 231 is called during execution of a COBOL program 211, a control part 250 transfers the data on a parameter area obtained when the program 211 is executed to a register saving area. Thus the part 250 can use the program 231 and executes it. When the execution of the program 231 is through, the part 250 gives a request to an intermediate program 221 for reset to the program 211. The linkage agreement of the program 211 is included in the linkage agreement of the program 231 and therefore the registers and data, i.e., a register saving area and a parameter area which were used in the program 231 can be used as they are used in the program 211. As a result, the program 221 is reset as it to the program 211, and then to a control program 245 when the processing of the program 211 is through. Thus the entire processing is over.

Description

[Detailed Description of the Invention] [Summary] In the program combination method, when one of the first language program and the second language program is called while the other is being executed, the processing area setting means is used to execute the program in the called destination language. By setting the necessary processing areas, mutual calls between different languages become possible.

[Industrial application field]

The present invention relates to a program linkage method, and particularly relates to a program linkage method when mutually calling different language programs having different linkage conventions.

[Conventional technology]

Generally, when developing a software product, its contents are divided into functions. Then, for each of the divided functions, a source program written in a programming language corresponding to the function is created and combined.

[Problem that the invention seeks to solve]

By the way, in the conventional method described above, in order to combine programs written in different languages for each function, it is necessary for each programming language to receive and pass control using the same linkage conventions, and it is necessary to transfer control using the same linkage conventions. The problem was that different languages could not call each other.

The present invention was created in view of these points, and an object of the present invention is to provide a program combination method that enables mutual calls between different languages.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the program combination method of the present invention.

In the figure, a first language processing means 111 executes a first language program.

The second language processing means 131 executes the second language program.

The processing area setting means 121 sets a processing area to be called when the first language processing means 111 and the second language processing means 131 call each other.

Therefore, the overall configuration is such that after setting the processing area of the calling destination by the processing area setting means 121, the calling destination program is executed.

[For production]

The first language processing means 111 executes the first language program, and the processing area setting means 121 executes the second language program.

When one of the first language processing means 111 and the second language processing means 131 calls the other, the processing area setting means 12
After setting the processing area of the called destination in step 1, execute the called program.

In the present invention, by setting the processing area necessary for executing the program of the called language using the processing area setting means 121, it becomes possible to mutually call different languages.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 shows the configuration of a program combination method in an embodiment of the present invention.

(2) and (1)... Here, the correspondence between the embodiment of the present invention and FIG. 1 will be shown.

The first language processing means 111 includes a cobol program 211,
Control program 245. Data area 241, control unit 25
Corresponds to 0.

The second language processing means 131 includes a C language program 231,
Control program 245. Data area 241, control unit 25
Corresponds to 0.

The processing area setting means 121 includes an intermediary program 221, a control program 245. Data area 241° control unit 250
corresponds to

↓-Jiku ■Ω゜Bottom Examples of the present invention will be described below, assuming that the above-mentioned correspondence exists.

In FIG. 2, a control unit 250 is connected to a peripheral control unit 280 for connecting peripheral devices and a memory 210 for storing programs and data. Furthermore, the peripheral control unit 280 includes a printer 281. which outputs program execution results and lists. A keyboard 283 for inputting information such as programs and operation instructions. Display 2 for displaying information
85° External storage device 28 for storing programs and data
7 is connected.

The control unit 250 includes a register group 25 for controlling.
3 is included. Also, the memory 210 contains the III? which has already been loaded from the external storage device 287. I program 245. Kobol Program 211°0 Language Program 231. Mediation programs 221 are stored therein, and there is a data area 241 necessary for their execution.

FIG. 3 is an explanatory diagram of the operation of the embodiment. Moreover, FIG. 4 is an explanatory diagram of processing area creation in the embodiment.

It is assumed that the linkage conventions for the C language program must satisfy the following two conditions in addition to the linkage conventions for the Cobol program.

+l) Register 3 (R3 in Figure 4) in the register group 253 indicates the start address of the stack management table, the third word of the stack management table indicates the start address of the stack area, and the fourth word indicates the start address of the stack area. Shows the final address.

(2) Register save area (register 2 (R2) indicates the start address) and parameter area (register 1 (R2)
1) indicates the start address) is in the stack area, and furthermore, the register save area and the parameter area must be in continuous areas.

Now, consider the case where the C language program 231 is called while the COBOL program 211 is being executed.

Hereinafter, reference will be made to FIGS. 2 to 4.

First, the control unit 250 executes the control program 245 stored in the memory 210. The control program 245 then calls the intermediary program 221 to perform initial processing for calling the C language program 231 from the COBOL program 211.

The control unit 250 executes the intermediary program 221 (step 311) and secures a stack area necessary for executing the C language program 231 in the data area 24°1 of the memory 210 (step 312).

Next, create a stack management table and step 312
The start address of the stack area secured in step 3 is stored in the third word of the management table, and the final address is stored in the fourth word of the management table (step 313).

Then, from the mediation program 221 to the control program 24
5 (step 314).

Next, the control program 245 is the COBOL program 211
call. The control unit 250 uses the COBOL program 211
is executed (step 315), and if the C language program 231 is called during the process, the intermediary program 221 is requested to call the C language program 231 (step 316).

When the control unit 250 executes the mediation program 221, it first sets the start address of the stack management table in the register 3 (step 317).

Next, set the start address of the parameter area in register 1,
The start address of the register save area is set in register 3 (step 318). Based on the C language linkage convention, the last predetermined number of bytes (for example, 32 bytes) of the stack area is used as a parameter area, and the following predetermined number of bytes (for example, 64 bytes) are used as a register save area. Set register 3.

Then, in step 318, the control unit 250 stores data in the parameter area when the cobol program 211 is executed.
Transfer to the parameter area set in step 319
). As a result, the data used in the COBOL program 211 can also be used in the C language program 231.

Next, the control unit 250 executes the C language program 231 (step 320).

When the execution of the C language program 231 is finished, a request is made to the intermediary program 221 to return to the Cobol program 211 (step 321). Since the linkage rules for the C language program 231 include the linkage rules for the COBOL program 211, the registers and data (register save area, parameter area) used in the C language program 231 can be used as they are. Therefore, the intermediary program 221 is the same as the Cobol program 21.
1 (step 322), and when the processing in the COBOL program 211 is completed, the process returns to 323 (step 323), and the entire process ends.

■, Stop As shown above, first execute the intermediary program 221 to secure the stack area and stack management table, and when calling the C language program 231 from the Cobol program 211, execute the intermediary program 221 to save the C language program 231. After setting the necessary registers and making preparations for executing the C language program 231, the C language program 231 is executed.

Therefore, it is possible to call different languages with different linkage conventions.

■, B's, F.

In addition, in the embodiment of the present invention described above, mutual calling of the Cobol program and the C language program was considered, but
It can also be applied to combinations of Fortran and C language, PL/I and C language, etc., as long as the languages have different linkage conventions.

In addition, in the embodiment, the C language linkage convention is the addition of two conditions to the Cobol linkage convention, but even between languages with completely different linkage conventions, the intermediary program 221 can handle the registers and data of the call destination. It can be applied by creating areas etc.

Furthermore, in "1. Correspondence between Examples and FIG. 1",
Although the correspondence between FIG. 1 and the present invention has been described, those skilled in the art will easily imagine that the present invention is not limited to this and that there are various modifications.

〔Effect of the invention〕

As described above, according to the present invention, the processing area setting means sets the processing area necessary for executing the program in the called destination language, and calls one of the first language program and the second language program while the other is being executed. Therefore, it is extremely useful in practical terms.

[Brief explanation of the drawing]

FIG. 1 is a principle block diagram of the program combination method of the present invention, FIG. 2 is a configuration block diagram of the program combination method according to an embodiment of the present invention, FIG. 3 is an explanatory diagram of the operation of the embodiment of the present invention, and FIG. The figure is a processing area creation diagram according to an embodiment of the present invention. In the figure, 111 is a first language processing means, 121 is a processing area setting means, 131 is a second language processing means, 210 is a memory, 211 is a Kobol program, 221 is an intermediary program, 231 is a C language program, and 241 is a data area , 245 is a control program, 250 is a control unit, 253 is a register group, 280 is a peripheral control unit, 281 is a printer, 283 is a keyboard, 285 is a display, and 287 is an external storage device. Figure 1 Figure 2 Figure 3 Processing details of the history Figure 4

Claims (3)

[Claims] (1) A first language processing means (111) that executes a first language program, and a second language processing means (13) that executes a second language program.
1), a first language processing means (111) and a second language processing means (13)
processing area setting means (121) for setting the processing area of the calling destination when performing the mutual calling of 1); A program combination method characterized in that the program is configured to execute a program. (2) The program linking method according to claim 1, wherein the processing area is a register necessary for program execution and data to be stored in the register. (3) The program combination method according to claim 1, wherein the processing area is a data area necessary for program execution and data to be stored in the data area.