JPS62196742A - Data collecting system for memory resident module - Google Patents

Abstract

PURPOSE:To collect data by an optional address in a memory resident module when a system is being operated, by replacing an instruction of the memory resident module which has existed in an address from the beginning, with an instruction for generating an interruption, by a replacing means, and also, saving its original instruction into a data collecting area. CONSTITUTION:At the time of a memory resident module 6 starts to move, and reaches a data collecting address, an interruption is generated by an instruction for generating an instruction, and by following this interruption, all registers are saved onto a memory. Therefore, even if various registers are used at the time of collecting a data, no influence is exerted on the memory resident module 6 side. If the interruption is generated, and it is received, a discriminating means 3 makes a data collection by a data collecting means 4 execute, in case of an interruption which has been generated by an instruction which has been replaced by a replacing means 2. At the time of the data collection is completed, a processing of the memory resident module 6 is resumed from the instruction of the memory resident module 6 which has been saved in its address entry, by a resuming means 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for collecting data during execution of a memory resident module in a computer system in order to evaluate the operating status of the module.

[Conventional technology]

In order to evaluate a memory-resident module, current register images and memory contents at various addresses within the module are required. Conventionally, the collection of data such as memory contents has been carried out by incorporating a mechanism in advance to collect the necessary data at several addresses in each module and collecting data using that mechanism, or by displaying the memory contents based on instructions from the operator. A method was used in which the contents of the memory were collected using a function, or a method was used in which the system was stopped and the contents of the memory were collected.

[Problem that the invention seeks to solve]

However, when evaluating a memory-resident module, it is inefficient to stop the system in order to check the contents of several words of memory or registers. In addition, in the method of checking the memory contents using the memory contents display function according to the operator's instructions, the memory contents at the time of inputting the operator command are displayed. It's inappropriate.

Furthermore, with a method in which the data collection mechanism is built into each memory-resident module at several addresses, if you try to collect data at a different address, you will need to modify or change the module accordingly. For modules that are loaded into memory at system start-up, it is difficult to change them while the system is running.

In this way, conventionally, it is difficult to collect data such as memory contents during execution at any address in a memory-resident module, and it is also difficult to change the address from which data is collected while the system is running. There was a problem that.

The present invention solves these conventional problems, and its purpose is to enable data collection at any address in a memory resident module while the system is running, and to The purpose is to be able to change the address.

[Means for solving problems]

In order to achieve the above object, the present invention provides a data collection method for a memory resident module in a computer system, which includes a setting means for setting a data collection address in the memory resident module and storage location information of data to be collected in a data collection area. and saving the instruction on the memory of the data collection address in the memory resident module to the data collection area,
replacing means for replacing an original instruction with an instruction that generates an interrupt; determining means for determining, when an interrupt occurs, whether the Jll interrupt is an interrupt generated by the instruction replaced by the replacing means; data collection means for collecting data at a position indicated by storage location information set by the setting means into the data collection area when it is determined that the interrupt is caused by the replaced instruction; A restart means is provided for restarting the processing of the memory resident module from the instruction saved in the data collection area by the replacement means after the collection by the collection means.

[Effect]

When the address of the memory-resident module at the time when data should be collected and the storage location information indicating which location to collect data are set in the data collection area by the setting means, the replacement means replaces the memory-resident module that was originally at that address. The instruction is changed to the instruction that generates the interrupt, and the original instruction is saved to the data collection area. When the execution of the memory resident module progresses and the replaced instruction that generates the interrupt is executed, an interrupt is generated, and when this is determined by the determination means, the data collection means stores the storage location preset by the setting means. Data is collected at the location indicated by the information. After this data collection, the restart means restarts the processing of the memory resident module from the instructions saved in the data collection area.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, where thick arrows indicate the flow of data and thin arrows indicate the flow of control.

The embodiment shown in FIG. 1 includes a setting means 1 for setting a data collection address in a memory resident module 6 and storage location information indicating a location where data to be collected is stored in a data collection area 7; The instructions on the memory at the data collection address in the module 6 are transferred to the data collection area 7.
a replacement means 2 that saves the original instruction in the memory to an instruction that generates an interrupt, and a determination that determines whether an interrupt is a general interrupt or an interrupt generated by an instruction replaced by the replacement means 2 when an interrupt occurs. means 3, a data collection means 4 for collecting data at a storage position designated by the setting means 1 into a data collection area 7, and a data collection means 4 for collecting data at a storage location designated by the setting means 1 into a data collection area 7; and restart means 5 for restarting. Further, in the case of this embodiment, the restarting means 5 includes an execution section 5a that interprets and executes the command saved in the data collection area 7 by the replacement means 2, and this execution section 5a.
and a resuming unit 5b that restarts the processing of the memory resident module 7 based on the execution result of step a.

The data collection address is specified using, for example, a module name and a relative address within the module.

Further, the collected data can be the contents of a register and the contents of a memory, and the contents of a register are specified, for example, by a register name, and the contents of a memory are specified, for example, by a segment name and a relative address within the segment. The setting means 1 reads the designation of a data collection address and the storage location of data to be collected at that address from, for example, a console or a file, generates an address entry in the data collection area 7 according to the read contents, and Secure the data collection area.

Various formats are possible for the data collection area 7, but
An example is shown in FIG. Data collection area 7 shown in the figure
consists of address entries set corresponding to each data collection address, and each address entry contains the saved instruction, the collection address register name, the collection segment name, the relative address within the segment, and the data collection area. Consists of.

Next, the changing means 2 in FIG. evacuated to
Thereafter, the instruction originally on the memory of this module 6 is replaced with an instruction that generates an interrupt, such as a pseudo-fault instruction.

At this time, the relative address of the data storage area 7 of the address entry used above is placed in the address field of the instruction that generates the interrupt.

Now, after finishing the above-mentioned wet cultivation, this memory resident module 6 starts to operate and when it reaches the data collection address, an interrupt is generated by the instruction that generates the interrupt mentioned above, and along with this interrupt, all the registers are changed. It is saved in memory. Therefore, even if various registers are used during data collection, there is no effect on the memory resident module 6 side.

When the above interrupt occurs and is accepted, the determining means 3
is a general interrupt depending on the v1 included type etc.

If the interrupt is caused by an instruction replaced by the replacement means 2, the data collection means 4 is caused to collect data.

Since the relative address of the data collection area 7 of the corresponding address entry is set in the address field of the instruction that generates the interrupt replaced by the replacement means 2, as described above, the data collection means uses this address as the address field. 4 obtains the address entry and saves the requested register or memory contents to the data collection area section in the data collection area 7 secured by the setting means 1.

When the data collection is completed, the resuming means 5 restarts the processing of the memory resident module 6 from the instruction of the memory resident module 6 that was saved in the address entry. Here, restart means 5 in this embodiment
is composed of an execution section 5a and a restart section 5b so as to be suitable for repeatedly performing data collection without resetting by the setting means 1. That is, when data collection by the data collection means 4 is completed, the execution unit 5a analyzes and executes the instructions saved on the memory in the memory resident module 6 without restoring them, and executes the instructions that are saved by executing the instructions. Information on how to update information such as registered registers is generated, and then the save information in the save area is rewritten by this generation process. When this rewriting is completed, control is passed to the restart unit 5b, and the restart unit 5b restores the contents of the registers that were saved in the memory at the time of the υI interrupt and updated by the execution unit 5a to a predetermined register, and makes the contents resident in the memory. The subsequent processing of module 6 is restarted from the address to be executed next to the data collection address.

Therefore, since the instruction that generates the interrupt remains replaced at the data collection address, data collection can be performed again.

Note that in cases where data collection is only required once, the restart means 5 may be configured as follows. That is, when data collection by the data collection means 4 is completed, the instructions saved on the memory in the memory resident module 6 are restored, and the register contents etc. that were saved on the memory when an interrupt occurred are restored to predetermined registers. , the subsequent processing of the memory resident module 6 is restarted from that data collection address.

Furthermore, in order to change the data collection address in this embodiment, it is sufficient to update the contents of the data collection area 7 again by the setting means 1, and to replace the command of the new data collection address with the interrupt generation command by the replacement means 2. .

〔Effect of the invention〕

As explained above, the present invention provides a replacement means for replacing an instruction on a memory resident module at a data collection address set by a setting means with an instruction that generates an interrupt, and for saving the original instruction in a data collection area. and a data collection means for collecting data at a position indicated by storage position information set in advance in a data collection area when the determination means determines that an interrupt is caused by the interrupt generation instruction replaced by the replacement means; After the data collection processing by the means, the restart means restarts execution from the replaced instruction in the memory resident module, so when evaluating the memory resident module, the memory or Data can be collected at any address while the system is running without creating a mechanism to collect register contents in advance, and it is also possible to change the address from which data is collected while the system is running. becomes.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and the second leap is a diagram showing an example of the data collection area 7. As shown in FIG. In the figure, ■...setting means, 2...replacement means,
3... Discrimination means, 4... Data collection means, 5...
restarting means, 5a... execution section, 5b... restarting section, 6.
...Memory resident module, 7...Data collection area.

Claims (1)

[Claims] A data collection method for a memory resident module in a computer system, comprising: a setting means for setting a data collection address in the memory resident module and storage location information of data to be collected in a data collection area; a replacement means for saving an instruction on a memory at a data collection address in a module to the data collection area and replacing the original instruction with an instruction that generates an interrupt; and when an interrupt occurs, the interrupt is replaced by the replacement means. determining means for determining whether or not the interrupt is generated by the replaced instruction; and when the determining means determines that the interrupt is generated by the replaced instruction, the storage location information set by the setting means indicates data collecting means for collecting position data in the data collecting area; and restarting means for restarting the processing of the memory resident module from the instruction saved in the data collecting area by the replacing means after the data collecting means collects the data. A data collection method for a memory resident module, characterized by comprising: