JPH01226042A - Program trace processing system - Google Patents

Abstract

PURPOSE:To collect trace information and to improve debugging efficiency by providing a protection area information table and a memory access information table and tracing the setting of data in a storage area to be utilized by a program and a reference state. CONSTITUTION:A registering means 2 registers a protection area range specifying information and collecting function information in a protection area information table 3 and a control means 5 sets up execution address information relating to a memory access execution instruction at the time of executing the program, memory reference information and reference information before and after setting in a memory access information table 6. A deciding means 7 decides whether a memory access based upon an execution instruction in the program is included within the protection area range in the storage area or not based on the memory reference information and the protection area range specifying information. When the memory access is included within the protection area range is decided, a state collecting means 8 forms and outputs collection data relating to the protection area in a format based upon the collecting function information by referring the table 6 and the storage area.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a program tracking processing method (a method for tracking the status of data settings and references in a storage area used by a program), and particularly to This invention relates to a program tracking processing method in debug processing.

[Conventional technology]

Traditionally, this type of program tracking processing method detects the suspicion that an incorrect method of setting or referencing data in a specific area of the storage area causes an incorrect operation, making the data in that specific area invalid. A break point is created for a certain program by rewriting the part (instruction) that seems to have been incorrectly set or referenced in that program with a branch instruction to the debug support program, and the specific area at the break point is There are two methods: checking the values to find the problem (invalid part in the program), and inserting a trace dump command into the program and checking the execution results (
A method was used to discover problem areas using trace information).

(Problems to be Solved by the Invention) In the conventional program tracking processing method described above, it is difficult to find a problem location by just executing the program for - times (executing the program for tracking processing), and it is difficult to find a problem by trial and error. The desired problem location must be discovered by gradually narrowing the range in the program where the problem location is expected to exist (in the case of the latter method mentioned above, if the program has a small number of steps, Problems can be found in one run, but for programs with a large number of steps, it is not possible to collect trace information for the entire program, so trial and error processing is required.)
There is a drawback that the efficiency of program debug processing performed using this program tracking processing method is reduced.

In addition, part of the program must be rewritten, such as rewriting to a branch instruction at a break point in the former method, or inserting a trace dump instruction in the latter method, so malfunctions or malfunctions caused by rewriting a part of the program may occur. The disadvantage is that there is a possibility that this may occur.

In view of the above-mentioned points, an object of the present invention is to provide a program tracking processing method that can improve efficiency in program debug processing and does not require rewriting a part of the program.

[Means to solve the problem]

The program tracking processing method of the present invention provides a protection area that defines a protection area on the storage area in the process of tracking the status of data settings and references to a storage area used by the program for debugging the program. Collection a that instructs how to collect range specification information and collection data
a protected area information table having function information; execution address information indicating an address of an execution instruction that executes a memory access in the program; memory reference information specifying an area to be accessed in the storage area; and the storage area. Register a memory access information table containing setting/reference information indicating the content of memory access to the area in the area, and protection area range designation information and collection function information specified by the protection information parameter in the protection area information table. a protection area information registration means for setting execution address information, memory reference information, and setting/reference information regarding an execution instruction that executes memory access to the storage area during execution of the program in the memory access information table; and memory reference information in the memory access information table set by the protection area determination unit and protection area range designation information in the protection area information table registered by the protection area information registration unit. protection area determination means for determining whether or not a memory access by an execution instruction in the program is within the 1% M area on the storage area; If it is determined that the memory access is within the protected area, the protection
A maintenance module that creates and outputs collected data regarding the I area by referring to the memory access information table and the storage area in a manner based on the collection function information in the protected area information table.
S'll area status collection means.

[Effect]

In the program tracking processing method of the present invention, the protection area information table has protection area range designation information that defines a storage area on the storage area and collection function information that instructs the manner in which collected data is collected, and the protection area information table has memory access information. The information table contains execution address information that indicates the address of the execution instruction that executes memory access in the program, memory reference information that specifies the target area of memory access on the storage area, and contents of memory access to the area on the storage area. the protection area information registration means registers the protection area range designation information and collection function information specified by the protection information parameter in the protection area information table;
Protection II: The 8m area determination means sets execution address information, memory reference information, and setting/reference information regarding an execution instruction that performs memory access to a storage area during program execution in a memory access information table, and the protected area determination means sets the Memory reference information and maintenance in the memory access information table set by the area determination means! l
Based on the protection area range designation information in the protection area information table registered by the file area information registration means, memory accesses by execution instructions in the program are executed in the storage area. 11
8! The protection area status collection means determines whether or not the target area is within the protected area. L? iI A mode in which when it is determined by the area determination means that a memory access by an execution instruction in a program is targeted within the range of a protected area, the collected data regarding that protected area is based on the collection function information in the protected area information table. Create and output by referring to the memory access information table and storage area.

(Example〕 Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the program tracking processing method of the present invention. means 2, protection area information table 3, user program execution means 4, protection area determination means 5, memory access information table 6, protection area determination means 7, protection area status collection means 8, and memory access means 9, storage area 10, and protection information parameter 1
1, and a user program 12 (in this embodiment, the tracking process is performed on the user program 12, but it goes without saying that the present invention can also be applied to system programs).
and a collection file 13.

Referring to FIG. 2, the protection area information table 3 set by the protection area information registration means 2 and referred to by the protection area determination means 7 and the protection area status collection means 8 determines which areas on the storage area 10 are reserved. In order to discover invalid parts on the program 12 (- programs including system programs for boat fishing), a specific area on the storage area IO (an invalid part caused by an invalid part on the program) can be detected. The start address (which specifies whether the area is defined as an area (the range can be set arbitrarily)) including areas where data is set and areas related to that area, etc.
Protection area range designation information 31 having the memory address of the first area of the protection area) and the end address (memory address of the last area of the protection II 8N area), and the collected data (
Safe! ! ! Protection 1 specified by area range specification information 31! Execution instructions that perform memory access to the area (setting or referencing data) and information indicating the contents of data in the protected area when memory access is performed by the execution instructions)
Instructions on how to collect data into the collection file 13 (when collecting data related to a certain protection area, the timing for collecting data is limited to 11 before setting data to the area in the ml area).

Collection function information 32 indicating whether the collection function is after setting or reference, etc.).

Referring to FIG. 3, the memory access information table 6 set by the protected area determining means 5 and the protected area determining means 7 and referred to by the protected area determining means 7 and the protected area status collecting means 8 includes the Execution address information 61 having the address of the execution instruction that requests memory access therein, memory reference information 62 having the memory address and memory length of the area on the storage area 10 to which the memory is accessed, and memory access to that area. Indicates whether the content is "data setting" or "data reference", and if it is "data setting", whether the setting is completed or not "before setting" and "after setting". It consists of setting before/after/reference information 63 identified by .

Next, the operation of the program tracking processing method of this embodiment configured as described above will be explained.

When tracking processing of the user program 12 is performed in order to discover invalid parts in the user program 12 during debugging processing of the user program 12, the user program execution environment setting means 1 stores protection information parameters in the protection area information table 3. 11 (protected area range designation information 31 and collection function information 32), the protected area information registration means 2 is activated. Thereafter, the user program execution means 4 is activated to execute the user program 12.

The protection area information registration means 2 inputs the protection information parameters 11 and inputs the protection area range designation information 31 that defines the protection area on the storage area 10 and the collection function information 32 that instructs the manner in which collected data is collected. Set in information table 3.

The user program execution means 4 started by the user program execution environment setting means 1 executes the user program 12
During the execution process, if there is a request for memory access to the storage area 10 by an execution command, the user program execution means 4 activates the protected area determination means 5.

The activated maintenance file area determining means 5 extracts execution address information 61 having as information the address of the execution instruction that requested memory access in the user program 12, the memory address of the area on the storage area 10 to which the memory is accessed, and the memory Memory reference information 62, which exists as length information, and setting/reference information 63 indicating the content of memory access, etc. are set in the memory access information table 6. Furthermore, the memory access means 9 activates the protected area determination means 7 and then executes settings and references to the area on the storage area 10 indicated by the memory reference information 62.
Start.

The memory access means 9 activated by the protected area determination means 5 performs memory access to a predetermined area on the storage area 10.

The protected area determining means 7 activated by the protected area determining means 5 determines that the content of the memory access is the protected information parameter 11.
In order to determine whether or not the memory access is within the protected fiJl area specified by Search the area range specification information 31 (any one from the area indicated by the memory address in the memory reference information 62 to the area of the length indicated by the memory length is from the start address to the end address in the protected area range specification information 31). ), and if the content of the memory access of the execution instruction in the user program 12 is a memory access that targets within the protected area. , the protection area determination means 7 refers to the collection function information 32 in the protection area information table 3 (the collection function information 32 corresponding to the protection area range designation information 31 retrieved by the above search) and determines the above-mentioned data in the storage area 10. The protected area status collection means 8 is activated to collect the status (data) within the protected area specified by the protected area range designation information 31.

The protection area status collection means 8 detects the timing indicated by the collection function information 32 in the protection area information table 3 (when it is time to collect collected data regarding the protection area specified by the protection area range designation information 31 corresponding to the collection function information 32). Before setting the data,
Based on the timing of collection indicated by the collection function information 32 and the settings before and after the data in the memory access information table 6, If the content of the current memory access indicated by the reference information 63 matches, the collected data is collected), the memory reference information 62 in the memory access information table 6 and the storage area 10 are referred to, and the memory reference on the storage area 10 is performed. The situation in the protected area including the memory access target area indicated by the information 62 and the execution address information 61 in the memory access information table 6 are collected, the collected data is created and output to the collected file 13, and the user program 12 This is useful for debugging.

Here, if the content of the above-mentioned memory access is data setting, the protection area determination means 5 activates the protection area determination means 7 before the setting, and after the memory access means 9 sets the data for the storage area IO. The before/after setting/reference information 63 in the memory access information table 6 is rewritten from "before setting" to "after setting" and the protected area determining means 7 is activated again. This makes it possible to collect data before and after data is set in the storage area 10.

(Effects of the Invention) As described above, the present invention enables memory access by an execution command in a program by setting a specific area on a storage area as a protected area in a program tracing process performed for program debugging. By determining whether the area is within the protected area and collecting the situation in the protected area at that time as collected data only if it is within the protected area. It is possible to automatically track only the status of the protected area and program when data is actually set or referenced in the area (in the conventional program tracking processing method, tracking processing is performed from the program side). Because it is, it is protected II.
Tracking is performed regardless of data settings or references to areas in the file area, whereas the present invention performs tracking processing from the storage area side, making the above-mentioned tracking possible).
There is an effect that the efficiency of debugging a program using this program tracking processing method can be improved.

In addition, since program tracking processing can be executed without replacing a part of the program, it is possible to prevent malfunctions or malfunctions caused by writing mistakes in part of the program.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of the protected area information table in FIG. 1, and FIG. 3 is a diagram showing the configuration of the memory access information table in FIG. FIG. 3 is a diagram showing the configuration. In the figure, 1...user program execution environment setting means, 2...
Protection area information registration means, 3...Protection area information table, 4...User program execution means, 5...Protection area determination means, 6...Memory access information table, 7...Protection area determination means , 8... Protected area status collection means, 9... Memory access means, 10... Storage area, 11... Protection information parameter, 12... User program, 13... Collection file, 31. . . . Protection area range designation information, 32 . . . Collection function information, 61 . . . Execution address information, 62 . . . Memory reference information, 63 .

Claims (1)

[Claims] In a process of tracking data settings and references to a storage area used by a program for debugging the program, protection area range specification information that defines a protection area on the storage area; a protected area information table having collection function information instructing a mode of collecting collection data; execution address information indicating an address of an execution instruction that executes memory access in the program; and information on a target of memory access on the storage area. A memory access information table that includes memory reference information that specifies an area and pre- and post-setting/reference information that indicates the content of memory access to the area on the storage area, and protection area range designation information and collection specified by protection information parameters. protection area information registration means for registering functional information in the protection area information table; and execution address information, memory reference information, and setting/reference information regarding an execution instruction that executes memory access to the storage area when the program is executed. A protection area management means for setting in a memory access information table, memory reference information in the memory access information table set by the protection area management means, and memory reference information in the protection area information table registered by the protection area information registration means. protection area determination means for determining whether a memory access by an execution instruction in the program is targeted within the protection area on the storage area based on protection area range specification information; When it is determined that a memory access by an execution instruction in the program is within the range of a protected area, the collected data regarding the protected area is collected in the memory access information in a manner based on the collection function information in the protected area information table. A program tracking processing method characterized by comprising a protection area status collection means for creating and outputting a table and the storage area by referring to the table and the storage area.