JPH03296820A - Method and device for assembly processing - Google Patents

Abstract

PURPOSE:To easily execute program correction or the like by constituting an assembling processing step for translating an assembly language program and forming machine word objects of instruction implementing data describing the implement attribute of each machine word instruction. CONSTITUTION:In the case of transferring an assembly program manufactured by A company to a CPU chip manufactured by B company, the implement states of respective instructions in the CPU chip based upon the reference specification of B company are defined in an instruction implementing data part 3. An assembly processing part 2 can previously recognize the states attaining respective instructions of the objective CPU.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an assembly processing method and apparatus for computer program development. Therefore, there is a need to ensure program compatibility between various microprocessors in order to prevent program redevelopment, but there are several ways to ensure program compatibility. One is programming in a high-level language. In the latter case, standard specifications are set and each company implements a subset or full set of the specifications.
However, this development method may generate instructions that cannot be realized due to differences in the operating system (hereinafter referred to as O8) assumed by each company's CPU chip or due to hardware reasons.
Even if processors from various companies comply with the standard specifications, there are parts that are not compatible with each other in detail.This part has a large impact on compatibility, especially in system programs related to the details of hardware such as O8. Since application programs running on the software do not use instructions related to the details of these hardware, compatibility is ensured for the majority of programs. ;7 However, problems may arise when trying to distribute system programs such as O5 between processors.In this case, even though standard specifications have been established to ensure program compatibility, compatibility cannot be maintained. Figure 2 shows the conventional assembly process in the background.
Refer to 7 (explained in 7). 10 is a source program file written in assembly language, 11 is an assembler, and 12 is an object program file. Converts the language into machine language instructions and outputs them to the object program file 12
Then, since only the instructions that the target processor has are handled as the instructions to be assembled, even if the instructions are standard specifications, instructions that the target processor does not have are treated as errors. Problems to be solved by the invention Conventional assembler processing methods and In the equipment, as explained in the specific example above, a program created with an assembler for company A's standard specification compliant chip is processed by another assembler for company B's standard specification compliant chip. When the code contains an instruction that exists in company A's chip but does not exist in company B's chip, it is processed by company B's assembler;

The part that was written was modified to the instruction that Company B's chip has (7. There are cases where an error occurs in assembler processing, but the program operates normally. In this case, there is no need to modify the program. (H) As a result, it is very time-consuming for porters who want to port a program between multiple chips, and the distribution of the program is further impaired. When porting a program between chips, take into account the problems mentioned above with conventional assembler processing methods and equipment. An assembler processing method that can define the compatibility status of each chip, such as whether each chip has or does not have it, and whether or not to simulate it with software, regarding the machine language instructions specified in the standard specification, even if it is for the purpose of facilitating the process. To achieve the above object, the present invention aims to provide an apparatus for translating a program written in an assembly language (- an assembly processing unit that generates machine language); and an instruction implementation data section that describes the implementation status of each machine language instruction referred to by the assemble processing section during assembly processing.

Effect: The assemble processing device of the present invention has the above-described configuration, so that the assemble processing section reads the contents of the instruction implementation data section when performing assembling processing, and thereby determines the optimum machine language instructions for each chip for the machine language instructions included in the source program. This makes it possible to perform assembler processing and at the same time to discover parts that need to be corrected when porting a program and to obtain suggestions for correction. An example will be explained with reference to the drawings. Fig. 1 is a block diagram of an assembly processing device in an embodiment of the present invention. 1 is a source program file written in assembly language, 2 is a source program file A4 3 is referenced by the assembler 2 during processing and defines the implementation status of each instruction in the target CPU. 4 is output by the assembler 2 This is an object program file that stores objects.The operation of the assemble processing device of this embodiment configured as described above will be explained below. Even though the implementation status is coded and recorded on the chip for each word instruction, 1. It exists as an instruction (existing instruction). 2. It does not exist as an instruction but is simulated by software (simulated execution instruction). 3. This instruction Does not exist (undefined instruction) Here 6 Consider the case where source program file 1, which stores a program written in assembly language for a company's standard specification compliant CPU chip, is to be ported to a company B's standard specification compliant CPU chip. Even though the instruction implementation data section 3 defines the implementation status of each instruction of the standard specifications compliant CPU chip of company B, the assemble processing section 2 can refer to the contents of the instruction implementation data section 3 to assemble the target CPU (company B's In this way, it is possible to know in advance the situation in which each instruction of the target CPU (standard specification compliant CPU chip) is implemented. By processing the contents of the chip program for the following purposes, it is possible to significantly reduce the number of man-hours required to modify the program during porting. Existence instructions - Correctly convert to objects. Mock execution instructions - Correctly convert. Undefined instruction that is converted to an object -> Outputs an error message indicating that the instruction is not implemented in the target CPU and prompts for correction.

In this way, by preparing the instruction implementation data part 3 for the CPU chip to be ported and assembling the software to be ported using the assemble processing device of the present invention, the assemble processing can be performed, and at the same time, it must be modified at the time of porting. As soon as the location is identified, you will be given some instructions on how to deal with it & CPU
Chip development manufacturers create instruction implementation data sections for their own chips and provide them to programmers who perform porting, thereby facilitating the distribution of software between standard specification compliant CPU chips and making a significant contribution to industrial development. Effects of the Invention Table 6 In the assembling processing method and apparatus of the present invention, the assembling processing section can grasp the implementation status of instructions of the CPU to be ported. Not only will you be able to identify areas that need to be corrected, but you will also be able to get some suggestions on how to correct them.
The man-hours involved in program porting can be drastically reduced, making it possible to make a significant contribution to industrial development.

[Brief explanation of drawings]

FIG. 1 shows the configuration of an assemble processing device according to an embodiment of the present invention. FIG. 2 shows the configuration of a conventional assemble processing device.・Assemble processing area 3...
・Instruction implementation data starvation 4...object program fine block

Claims (2)

[Claims] (1) Translate a program written in assembly language,
An assembling processing method comprising an assembling processing step for generating a machine language object, and instruction implementation data that describes implementation attributes for each machine language instruction referenced by the assembling processing step during assembling processing. (2) Translate a program written in assembly language,
An assemble processing device comprising an assemble processing section that generates a machine language object, and an instruction implementation data section that describes implementation attributes for each machine language instruction that the assemble processing section refers to during assembly processing.