JPH0399329A - Objective program generating system - Google Patents

Abstract

PURPOSE:To simplify the change of a target machine and the addition and change of an objective program by selecting an objective program generating program in accordance with an intermediate code and interpreting the selected program to generate the objective program. CONSTITUTION:An intermediate code input means 3 inputs the intermediate code 11 from a storage device 1 and an objective program selecting means 4 analyzes the code 11, recognizes an instruction and selects a corresponding objective program generating program 21 from a storage device 2. An objective program description language interpreter 5 interprets the selected program 21 and generates a code corresponding to the objective program to generate the objective program 6. In the case of changing the target machine or partially adding or changing the objective program, only the objective program formation program 21 is changed without changing the contents of the interpreter 5 or the like, so that the change can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a target program generation method for converting an analyzed intermediate code into a target program in a language processing system that generates a target program from a source program.

[Conventional technology]

FIG. 3 shows an example of the configuration of a conventional target program generation method, in which a storage device 1 stores an analyzed intermediate code 11, which is an intermediate instruction obtained by converting each instruction of a source program into a unit of target program generation. , an intermediate code input means 3 which inputs the intermediate code 11 from the storage device 1, and generates a corresponding intermediate code corresponding objective program from the intermediate code corresponding objective program generation means group 8 by analyzing the intermediate code inputted by the intermediate code input means 3. Means 81. An intermediate code selection means 7 selects ..., and operates when selected by the intermediate code selection means 7, analyzes the manually generated intermediate code and sets data and register numbers, etc.
An instruction code generation means 91 corresponding to each type of instruction code from the instruction code generation means group 9. . . . Intermediate code corresponding purpose program generation means 81. . . . and intermediate code corresponding objective program generation means 81. ...
instruction code generation means 91 which is activated and operated by and generates instruction codes to generate the target program 6; ...
It is composed of.

FIG. 4 shows an example of the operation of the above conventional example, and the intermediate code 11 includes ADD DATA-A, DATA-B, DATA-
Assume that C is given. Note that this intermediate code is an instruction to add the value of DATA-A and the value of DATA-B to obtain the value of DATA-C.

3 and 4, the intermediate code input means 3 inputs the intermediate code 11 from the storage device 1 (step S1), and the intermediate code selection means 7 analyzes the input intermediate code 11 and selects "ADD". Recognizes this command and selects a corresponding intermediate code compatible objective program generating means, for example 84, from the intermediate code compatible objective program generating means group 8 (step 52) 0 The selected intermediate code compatible objective program generating means 84 is Setting the variable part of the program, i.e. register number °“ in register GRI
1' and make the data reference DATA-A correspond to the memory address reference MEMI (step S3). Then, the corresponding instruction code generation means from the instruction code generation means group 9, for example 94, is activated to LOAD GRI, MEMI. An instruction code is generated (step S4).

Note that this instruction code is intended to transfer the value of the memory MBM1 to the register GRI. Then, the same process is repeated (steps 35 to 5IO), and the final target program 6 is a code with the contents LOAD GRI, MEMI LOAD GR2, MEM2 ADD GRl, GR2 STORE GR2, MEM3 for the input intermediate code 11. generate. Note that the instruction code on the third line is for adding the value of the register GRIO to the value of the register GR2, and the instruction code on the fourth line is for storing the value of the register GR2 in the memory MEM3.

[Problem to be solved by the invention]

The conventional target program generation method was performed as described above, and there were no problems with the generation of the target program, but there were problems such as changing the computer (target machine) that executes the generated target program 6
The drawback was that it lacked flexibility when it came to partial additions and changes.

That is, in the conventional examples shown in FIGS. 3 and 4, the setting of register numbers and address information and the generation of instruction codes are performed by the intermediate code corresponding objective program generation means 81.・・・
- and the instruction code generation means 91, etc., so when changing the target machine, the intermediate code compatible objective program generation means group 8 and the instruction code generation means group 9 must be changed from the source program stage. Everything had to be recreated, which was extremely time-consuming.

Furthermore, even if there is a partial addition or change to the object program 6, the corresponding intermediate code corresponding object program generation means and instruction code generation means must be recreated from the source program stage, resulting in very poor maintainability. It was something.

The present invention has been proposed in view of the above points, and its purpose is to provide a target program generation method that can easily deal with changes in the target machine and partial additions and changes to the target program. There is a particular thing.

[Means to solve the problem]

In order to achieve the above object, the present invention includes intermediate code input means for inputting an analyzed intermediate code from a storage device, and a plurality of object program generation programs written in an object program description language and having a data definition section and a code generation procedure section. an object program selecting means for selecting an object program generation program corresponding to the intermediate code inputted by the input means from a storage device storing the object program; and an object program for generating an object program by interleaving the selected object program generation program. A program description language interpreter is also provided.

[Effect]

In the object program generation method of the present invention, the intermediate code input means inputs the analyzed intermediate code from the storage device, and the object program selection means includes a data definition section and a code generation procedure section written in an object program description language. A target program generation program corresponding to the intermediate code input by the input means is selected from a storage device storing a plurality of target program generation programs, and the target program description language interpreter inks the selected target program generation program. generate the target program.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of the target program generation method of the present invention. In FIG. 1, this embodiment has a storage device 1 that stores an analyzed intermediate code 11, which is an intermediate instruction obtained by converting each instruction of a source program into a target program generation unit, and an intermediate code 1 that is input from the storage device 1. intermediate code input means 3, a storage device 2 storing a plurality of object program generation programs 21 written in an object program description language and having a data definition section and a code generation procedure section; and intermediate code 11 manually input by the input means 3. The target program selection means 4 selects the target program generation program 21 corresponding to the target program generation program 21, and the target program description language interpreter 5 generates the target program 6 by interleaving the selected target program generation program 21. .

FIG. 2 shows an example of the operation of the embodiment shown in FIG.
It is assumed that MOVB DATA-A DATA-B is given as the intermediate code 11. Note that this intermediate code is DATA
This is an instruction to transfer the contents of -A as the contents of DATA-B.

1 and 2, the intermediate code manual means 3 inputs the intermediate code 11 from the storage device 1 (step S1), and the target program selection means 4 analyzes the intermediate code 11 and selects "'MOVE". A target program generation program 2 that recognizes the command and generates a corresponding target program from the storage device 2
1 is selected (step S2).

Here, the target program generation program 21 is “M O
For example, the description for the "VB" instruction is as shown in the figure, and the data declaration section 21a and code generation procedure section 21
It has b. That is, in the data declaration section 21a, the data DATA-A and DATA-B received as parameters PAPI and PAR2 are declared in the declaration statement "D CL".
The tokens are associated with the tokens TOKEN-A and TOKEN-B, and register numbers are assigned to the registers GRI, GR2, and GR3. In addition, the code generation procedure section 21
In b, the token TOKEN-A is divided into cases where it is a number and cases where it is not, and if it is a number, it is MVD TOKEN-A.
TOKEN-B.

, and if it is not a number, AGIP G9LY"n"! LOAD GR2, $LENGTH (TOKEN-^
);LO^D G)13. $LENGT)l(U to TO
N-B);? '1VLCL TOKEN-A (GR2)
, TOKEN-B (GR3), GRI; Here, MVD is a normal transfer command,
MVLCL is a data transfer command of the length (LENGTH) specified in parentheses. ACIP is an instruction to set a value.

Next, the selected target program generation program 21
is interleaved (translated and executed) by the target program description language interpreter 5 (step S3), and a code corresponding to the target program is generated depending on whether the data DATA-A and DATA-B are numbers. A target program 6 is generated.

〔Effect of the invention〕

As explained above, in the object program generation method of the present invention, in order to obtain the object program by selecting the object program generation program according to the intermediate code and inking it, -Susu Fukuten GoL Saturday and Sunday 780 Grams You only need to change the target program generation program without changing the description language interpreter, etc. In this case, the target program generation program is written in the target program description language and the data definition section It has a code generation procedure section and an easy-to-understand structure.
It has the advantage of being very easy to change (rewrite) and easy to deal with. Furthermore, partial additions and changes to the target program are similarly easy to make and can be handled easily.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the object program generation method of the present invention, FIG. 2 is an explanatory diagram of the operation of the embodiment of FIG. 1, and FIG. 3 is a block diagram showing a conventional object program generation method. , FIG. 4 is an explanatory diagram of the operation of the conventional example shown in FIG. In the figure, ■......Storage device 11...Intermediate code 2...Storage device 21...Target program generation program 21a
...Data declaration section 21b...Code generation procedure section 3...Intermediate code input means 4...
...Objective program selection means 5...
Objective Program Description Language Inkpuri 6...
・Purpose blog

Claims (1)

[Scope of Claims] An intermediate code input means for inputting an analyzed intermediate code from a storage device, and a storage device storing a plurality of object program generation programs written in an object program description language and having a data definition section and a code generation procedure section. an object program selection means for selecting an object program generation program corresponding to the intermediate code inputted by the input means from the input means; and an object program description language interpreter for interpreting the selected object program generation program to generate an object program. An objective program generation method characterized by comprising: