JPH04361328A - Processing mode switching system - Google Patents

Abstract

PURPOSE:To constantly prevent the processing speed of a normal processing from being lowered by constituting a program so that the switching judgement step of a processing mode can not exist in the program. CONSTITUTION:The program equipped with the plural processing modes builds in a program mechanism to simultaneously or selectively exclude (1) or to restore (2) plural bypass steps 200 by bypassing entries to the respective processing modes according to a branching instruction 200. Namely, in the normal mode, it is programmed to bypass the routine of the specified processing mode according to the branching instruction 200 so that the processing of the added specified mode, for example, can not be passed. When an instruction is applied to execute a mode switching or adding function, the excluding program (1) is executed to exclude the branching instruction for bypass, to replace it with a no operation (NOP) instruction 100 and to start a requested processing mode 101.

Description

[Detailed description of the invention]

0001

[Field of industrial application] With the recent diversification of information processing in information processing devices, for example, in control programs, etc.
In addition to the normal processing mode, other processing modes or processing programs are often added and operated, and in such cases, in the conventional method, the corresponding processing mode or specific processing A determination step is required at the entry step to the program, and there is a problem that the processing speed of normal processing constantly decreases.Therefore, there is a need for a processing mode switching method that does not reduce the processing speed of normal processing.

0002

2. Description of the Related Art FIG. 5 is a diagram illustrating a conventional processing mode switching method. In the conventional method, as shown in the figure, in a judgment step 90 it is determined whether a specific processing mode is requested, and if so, the requested mode processing 101 is performed. If the branch instruction is not requested, e.g.
The configuration was such that the process branches to the process to which the label indicated by ``LABEL'' is attached. Moreover, in the normal program configuration, such judgment step 90 exists at various places in the control program.

0003

[Problem to be Solved by the Invention] Therefore, even in regular processing that does not require a specific processing mode, it is necessary to execute the above judgment step 90 that exists in various places, and the speed of normal processing is constantly reduced. was there.

In view of the above-mentioned conventional drawbacks, the present invention configures a program having a plurality of processing modes so that there is no processing mode switching judgment step in the program, and distinguishes between a program during normal processing and a specific processing mode. An object of the present invention is to provide a processing mode switching method that includes a built-in program mechanism for switching between programs of processing modes.

[0005]

[Means for Solving the Problems] Figure 1 is a diagram showing the principle of the present invention, in which (a) shows the case where the restoration program ■ is executed, and (b) shows the case where the deletion program ■ is executed. It shows. The above problem is solved by a processing mode switching method configured as follows.

In a program with multiple processing modes, entry to each processing mode is performed using a branch instruction 200.
This is achieved by bypassing the bypass step 200 at the same time, or selectively, by deleting the bypass step 200 {specifically, replacing a branch instruction with a no-execute (NOP) instruction}, or by restoring {specifically In particular, it has a built-in program mechanism that returns the replaced no-execute (NOP) instruction to its original branch instruction, and for example, the operator inputs instructions for deletion and restoration. This automatically executes the deletion/restore process, thereby eliminating unnecessary judgment steps in the program.

[0007]

[Operation] That is, in the processing mode switching method of the present invention, in the normal mode, for example, the branch instruction 200 is used to avoid passing through the added specific mode processing.
Programmed to bypass routines for that particular processing mode. {Refer to the program structure in Figure 1(a)} However, if an instruction to switch modes or execute additional functions is given, the deletion program ■
is executed, the branch instruction for the above-mentioned bypass is deleted and replaced with a no-execute (NOP) instruction,
The requested processing mode will be entered.

Similarly, when an instruction is given to restore the processing mode or delete additional functions, the restoration program
is executed to set the deleted branch instruction at its original program location and to bypass the routine of the particular processing mode with the branch instruction 200.

Therefore, according to the present invention, for example, the built-in deletion program ■,
Alternatively, by running the restoration program ■, you can switch to a specific processing mode, add functions, or bypass it, and you can switch modes and add functions without reducing the processing speed of normal processing. be.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below in detail with reference to the drawings. The above-mentioned FIG. 1 is a diagram showing the principle configuration of the present invention, and FIG.
FIG. 3 is a diagram showing an embodiment of the present invention. FIG. 2 shows an example (a1) of the deleted program (a1) and the program state after deletion (a2), and FIG. 3 shows an example of the bypass restoration program (a2). b1) and the program state after restoration (b2), and FIG. 4 is a diagram showing another embodiment of the present invention.

In the present invention, in a program having a plurality of processing modes, entry to each processing mode is achieved by bypassing the branch instruction 200,
Delete a plurality of the bypass steps 200 at the same time or selectively {specifically, delete a branch instruction without execution (NOP)
) A built-in program mechanism for replacing the replaced instruction with an instruction}■, or restoration {specifically, a process of returning the replaced no-execute (NOP) instruction to the original branch instruction}■, for example. There is a need for a means to automatically execute the deletion/restore process (program) by inputting the deletion/restore instructions by the operator, thereby eliminating unnecessary judgment steps in the program. It is a method. Note that the same reference numerals indicate the same objects throughout the figures.

The processing mode switching method of the present invention will be explained below with reference to FIGS. 2 to 4 while referring to FIG. As shown in FIG. 1 described above, in the program according to the present invention, if a specific processing mode is not requested, the processing routine 101 of the specific processing mode is directly bypassed by the branch instruction 200. The program structure is as follows.

[0013] Therefore, if the user desires to perform the process 101 in the particular mode, the user issues an instruction to delete the bypass. Specifically, for example, the name of the mode you want to process
(or address) and input a specific command. Then, the deletion program (2) shown in FIG. 2(a1) is executed.

Process step 300: Retrieve the address of the branch instruction for bypass. Processing step 301: Write a no-execute (NOP) instruction to the address of the branch instruction. Processing step 302: The address where the branch instruction was stored is saved to a specific area.

When this deletion program (■) is executed, the desired program will be in the state shown in (a2), and after executing the no-execute (NOP) instruction, it will be possible to enter the requested mode of processing 101. Become.

[0016] Furthermore, if the user wishes to return to normal processing after executing the above-mentioned specific mode processing 101, the user issues a restoration instruction. Specifically, for example, specify the name (or address) of the mode you want to bypass and input a specific command. Then, the restoration program shown in FIG. 2(b1) is executed.

Processing step 400: Read the address of the branch instruction saved in a specific area. Processing step 401: Write the original branch instruction 200 at the read address position.

Processing step 402: Original branch instruction 2
Write the branch destination address of 00. However, this processing step is not necessarily necessary depending on the internal structure of the processor on which the desired program runs. That is, it is only necessary that a branch instruction that also specifies a branch destination address has been written in the process of step 401 above.

When this restoration program (2) is executed, the execution program enters the state shown in (b2), and a specific mode processing routine 101 is executed by a branch instruction 200.
is bypassed. Therefore, the above deletion program■
By selectively instructing and executing the restoration program ■, the above-mentioned judgment step 90 can be carried out in normal processing.
It is possible to obtain a program that does not exist, and the processing speed of the normal processing can be improved.

Next, referring to FIG. 4, a processing mode switching method will be described when mode switching exists at a plurality of locations in a program. When a user inputs a command and instructs multiple bypass deletions or restoration processing, the specified multiple bypass deletions or
Alternatively, the restoration process is repeated. That is, the processing step
500: Retrieve bypass address (or restoration address) table.

Processing step 501: Based on the extracted bypass address (or restoration address) table, bypass deletion processing or restoration processing is executed at a plurality of locations.

[0022] Processing step 502: It is checked whether all the bypass (restored) addresses specified in the bypass address (or restored address) table have been subjected to bypass deletion processing/restoration processing, and if any still remain. If so, the process returns to step 500.

[0023] In this way, bypass deletion processing/restoration processing at a plurality of locations in a program can be executed with a single command instruction. In the above embodiment, an example was explained in which the user inputs a specific command to instruct execution of the bypass deletion process/restore process. In such cases, the user can rewrite the contents of the mode switching instruction bit using a write command in advance, and then instruct bypass deletion/restore to turn on the power to the information processing device, etc. Taking this opportunity, the above bypass deletion/restore program is started.
It is also possible to refer to the mode switching instruction bit and delete/restore the bypass of the specified mode.

[0024] Therefore, the means for activating the bypass deletion/restoration processing program is not particularly limited.

[0025]

Effects of the Invention As described above in detail, the processing mode switching method of the present invention allows entry into each processing mode to be performed in a program having a plurality of processing modes.
This is achieved by bypassing with a branch instruction, and has a built-in program mechanism that simultaneously or selectively deletes or restores multiple bypass steps, improving processing speed in normal processing. By selectively bypassing and deleting/restoring a plurality of processing modes, it is possible to easily switch between various processing modes.

[Brief explanation of the drawing]

[Figure 1] Principle configuration diagram of the present invention

[Fig. 2] Diagram showing one embodiment of the present invention (Part 1)

[Figure 3
] Diagram showing an embodiment of the present invention (Part 2)

FIG. 4 is a diagram showing another embodiment of the present invention.

[Figure 5] Diagram explaining a conventional processing mode switching method

[Explanation of symbols]

90 Judgment step

Claims (1)

[Claims] Claim 1: In a program with multiple processing modes, entry to each processing mode is performed using a branch instruction (200
), and is characterized by having a built-in program mechanism for simultaneously or selectively deleting (■) or restoring (■) the bypass step (200). method.