JPS62154145A - Processing system for dynamic extension supervisor call interruption - Google Patents

Abstract

PURPOSE:To attain execution of many user development supervisor call interruption routine by registering an extension supervisor call interruption processing control table to a supervisor call interruption table of a system. CONSTITUTION:An interruption is produced by an extension supervisor call interruption instruction containing an extension supervisor call instruction code corresponding to the element to which an extension supervisor call interruption processing control routine 12 through user programs 16a-16n. In such a case, the control is transferred to said routine 12. The routine 12 delivers the control to the extension supervisor call interruption routines 18a-18n based on the contents of an extension supervisor call interruption table 11 as well as address space control tables 14a-14n corresponding to the address spaces to which those user programs belong.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a supervisor call interrupt processing method.

[Conventional technology]

In conventional supervisor call interrupt handling methods in information processing systems, one supervisor call interrupt table with supervisor call interrupt codes assigned for system use and user use is created in the system at the time of system generation or system startup. be done. When a supervisor call interrupt occurs, the supervisor call interrupt table is searched according to the supervisor call interrupt code to determine a supervisor call interrupt processing routine.

[Problem that the invention seeks to solve]

In the conventional method described above, only one supervisor call interrupt routine can be registered in one element of the supervisor call interrupt table allocated for a user in the system, that is, one in the entire address space; The disadvantage was that the total number of supervisor call interrupt routines for development was limited to the number of supervisor call interrupt codes for the user.

In addition, since the user element in the supervisor call interrupt table must store the virtual memory address of the user-developed supervisor call interrupt routine in advance, the user-developed supervisor call interrupt routine It also had the disadvantage that it was determined at generation time or system startup. This has created a problem in that it is difficult to develop a new user supervisor call interrupt routine.

The present invention improves these conventional drawbacks, and
Its purpose is to enable the execution of many user-developed supervisor call interrupt routines even with a small number of user supervisor call interrupt codes, and to allow them to be incorporated into the system at any time after the system is operational. The aim is to provide a method that allows

[Means for solving problems]

In order to achieve the above object, the present invention
In an information processing system that supports multiple address spaces that perform call interrupt processing, an extended supervisor call interrupt processing management routine is registered in the element of the supervisor call interrupt table, and an extended supervisor call interrupt processing management routine is created for each address space. an address space control table, an extended supervisor call interrupt table, an extended supervisor call interrupt code corresponding to the element in which the extended supervisor call interrupt processing management routine is registered, and a routine name of the extended supervisor call interrupt routine to be used. registering the extended supervisor call interrupt code and the extended supervisor call interrupt routine name in the extended supervisor call interrupt table corresponding to the address space to which the user program belongs, in response to a macro instruction in the user program that includes; extended supervisor call interrupt processing registration means for registering the address of the registered table in the address space control table corresponding to the address space to which the user program belongs; When an interrupt is generated by an extended supervisor call interrupt instruction that has an extended supervisor call interrupt code corresponding to an element in which the extension is registered, control is passed to the extended supervisor call interrupt processing management routine registered in the element, and the extension The supervisor call interrupt processing management routine passes control to the extended supervisor call interrupt routine based on the contents of the address space control table and the extended supervisor call interrupt table that correspond to the address space to which the user program that generated the interrupt belongs. It is configured as follows.

[Effect]

For example, user program A uses the extended supervisor call interrupt routine RA, and user program B
If you want to use extended supervisor call interrupt processing routine RB, user program A must include interrupt code D and processing routine R corresponding to the element in which the extended supervisor call interrupt processing management routine is registered.
A macro instruction containing the routine name of A and an extended supervisor call interrupt instruction IA containing interrupt code D are provided, and user program B includes a macro instruction containing the same interrupt code D and the routine name of processing routine RB, and interrupt code D. An extended supervisor call interrupt instruction IB is provided.

When the macro instruction of user program A is executed, the extended supervisor call interrupt processing registration routine is called, and the interrupt code D and routine name RA are paired in the extended supervisor call interrupt table in the address space to which user program 8 belongs. The registered address is registered in the address space control table corresponding to the extended supervisor call interrupt table.

Similarly, when the macro instruction of user program B is executed, the extended supervisor call interrupt processing registration routine is called, and interrupt code D and routine name RB are stored in the extended supervisor call interrupt table in the address space to which user program B belongs. are registered as a pair,
The registered address is registered in the address space control table corresponding to the extended supervisor call interrupt table.

When an interrupt occurs in the user program by the extended supervisor call interrupt instruction IA, the extended supervisor call interrupt processing management routine is called by the interrupt code D of the instruction IA, and the extended supervisor call interrupt processing management routine determines whether the interrupt occurs. The interrupt code D is retrieved from the extended supervisor call interrupt table of the address space to which user program A belongs.
Control is passed to the extended supervisor call interrupt routine with the routine name RA registered as a pair.

On the other hand, when an interrupt by the extended supervisor call interrupt instruction [B of user program B occurs, instruction IB
The extended supervisor call interrupt processing management routine is called by the interrupt code D that the extended supervisor call interrupt processing management routine has, and the extended supervisor call interrupt processing management routine retrieves the interrupt code from the extended supervisor call interrupt table of the address space to which user program B, where the interrupt occurred, belongs. Control is passed to the extended supervisor call interrupt routine having the routine name RB registered as a pair with D, that is, the same interrupt code D can be used to execute different extended supervisor call interrupt processing routines.

In addition, if it becomes necessary to use the extended supervisor call interrupt routine with the routine name RC in another user program C after system generation or startup, a macro containing the interrupt code D and its routine name RC must be created in the user program C. If an instruction and an extended supervisor call interrupt instruction IC containing code D are provided, an address space control table is generated by the extended supervisor call interrupt processing management routine, and the extended supervisor call interrupt processing management routine changes the routine name according to its contents. Control can be passed to the extended supervisor call interrupt routine of the RC, and a new extended supervisor call interrupt routine can be installed without stopping the system.

〔Example〕

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

FIG. 1 is a block diagram of an information processing system to which an embodiment of the present invention is applied, in which 1 is a central processing unit, 2 is a virtual memory, and 3 is an auxiliary storage device.

The virtual memory 2 is divided into an address space a-n and a common area that can be accessed from each address space a''-n, and the common area contains a supervisor call interrupt table 11. Extended supervisor call interrupt processing management. Routine 12. Extended supervisor call interrupt processing registration routine 13. Address space control tables 143 to 14n corresponding to each address space a to n are provided. The supervisor call interrupt table 11 is as follows:
This is a conventional system supervisor call interrupt table, which includes X system supervisor call interrupt elements H1la to 111x and m user supervisor call interrupt elements 112a.
~112m, address space control table 14a~
14n each includes an extended supervisor call interrupt table pointer 1418-141n.

Further, each address space a to n of the virtual memory 2 includes extended supervisor call interrupt tables tSa to 15n,
User programs 16a=16n are included. Each of the above extended supervisor call interrupt tables 15a
A plurality of entries can be set for each of =15n, and the number of registered entries (the number of extended supervisor call registration entries) is set in the counting units 151a to 1510. Each end 52a to 152n includes subends 1521a to 1521n for registering extended supervisor call interrupt codes, subends 522a to 1522n for storing tJ=supervisor call interrupt processing flags, and extended supervisor - It has a sub-entry 1523 a = 1523 n for registering a call interrupt routine address and a sub-end 'J 1524 a = 1524 n for registering an extended supervisor call interrupt routine name.

Further, the user program 16a includes a macro instruction 161a having an extended supervisor call interrupt code 1611 and an extended supervisor call interrupt routine name 1612a as parameters, and an extended supervisor call interrupt instruction 162a having the extended supervisor call interrupt code 1611. The user program 16b includes a macro instruction 161b having an extended supervisor call interrupt code 1611 and an extended supervisor call interrupt routine name 1612b as parameters; A call interrupt instruction 162b is included, and the user program 16
n is an extended supervisor call interrupt code of 16.
11 and extended supervisor call interrupt routine name 1
612 Macro instruction 161 with n as a parameter
n and extended supervisor call interrupt code 161
Extended Supervisor Call Interrupt Instruction 162 with 1
n is included.

In addition, the auxiliary storage device 3 includes a dynamic load library 17.
Extended Supervisor Call Interrupt Routine 1
82 to 18n are in the dynamic load library 17 that is dynamically loaded as a programmer 1 separate from the user program 16.

EM211 is a flowchart showing an example of preprocessing added to the system to execute the method of this embodiment.

An element with a user supervisor call interrupt element in the supervisor call interrupt table 11 selected by the user at system generation, for example, element 11 corresponding to interrupt code 1611
The address of the extended supervisor call interrupt processing management routine 12 is registered in 2a. The management routine 12 and extended supervisor call interrupt processing registration routine 13 are registered in the system, that is, stored in a common area on the virtual memory 2 (22). Also, when creating an address space, each address space control table 14a-=14
The extended supervisor call interrupt table pointer 141a=141n in n is initialized as a null pointer to indicate that the extended supervisor call interrupt tables 15a-15n have not been created (23).
.

3 to 6 are flowcharts showing processing examples from execution of the user programs 16a, 16b to transfer of control to the extended supervisor call interrupt routines 18a, 18b, and FIG. 3 shows the processing in the user program 16a. 4 shows the processing contents of the extended supervisor call interrupt processing registration routine 13, and FIG. 5 shows the processing contents of the extended supervisor call interrupt processing management routine 12.
FIG. 6 shows the processing contents of the user program 16b.

After starting execution of the user program 16a, the user registers the extended supervisor call interrupt routine 18a used by the extended supervisor call interrupt instruction 162a in the extended supervisor call interrupt table 15a, so the user registers the extended supervisor call interrupt routine 18a, which is used in the extended supervisor call interrupt instruction 162a, in the extended supervisor call interrupt table 15a. The extended supervisor call interrupt processing registration routine 13 is called using the macro instruction 161a that specifies the call interrupt code 1611 and the routine name 1612a of the extended supervisor call interrupt processing routine 18a (CA
LLi2.31).

Extended supervisor call interrupt processing registration routine 1
3, when called, creates the extended supervisor call interrupt table 15a in the address space a to which the user program 16a belongs, as shown in FIG. 4 (311).
, user-specified extended supervisor call interrupt code 1611 in table +5a subend January 52
1a and also register the extended supervisor call interrupt routine name 1612a in the subend January 5243 (312, 313), and update the cow 7i part 151a (314). Next, the address of the extended supervisor call interrupt table +52 is set in the extended supervisor call interrupt table pointer 141a of the address space control table 'a corresponding to the extended supervisor call interrupt table 15a (315).

Once such processing is completed, the user program 16a can use the extended supervisor call interrupt instruction 162a as needed.

As the execution of the user program 16a progresses and the extended supervisor call interrupt instruction 162a is executed, a supervisor call interrupt occurs (32.degree. 33). When this interrupt occurs, the system searches the system's supervisor call interrupt table 11 for the extended supervisor call interrupt command 1611 held by the extended supervisor call interrupt instruction 162a, and selects the supervisor call interrupt element 1 for that user.
Control is passed to the extended supervisor call interrupt processing management routine 12 at the address stored in 12a.

Extended supervisor call interrupt processing management routine 1
2 takes over the control, and as shown in FIG.
Search 331) for entry 152a in call interrupt table +5a, and find that the extended supervisor call interrupt code stored in its subentry 1521a matches the extended supervisor call interrupt code 1611 held by extended supervisor call interrupt instruction 162a. It is determined whether or not to do so (332). If no match is detected as a result of this judgment, the extended supervisor call interrupt table 15a is checked for other entries (
333), if there is, the process returns to step 331 and repeats the same process, and if there is no other entry and a matching code is not found, it is processed as an error (33B).

On the other hand, if one loss is detected in step 332, the subend 524 is paired with the interrupt code for which a match has been detected.
8 is already loaded into virtual memory 2.
(334)
, if it has already been loaded, control is passed to the extended supervisor call interrupt routine 18a on the virtual memory designated by the extended supervisor call interrupt routine address stored in subentry 1523a (34). or,
If not, dynamically virtualize the extended supervisor call interrupt routine 18a from the dynamic load drive 91-7 using the extended supervisor call interrupt routine name 1612a stored in subend month 524a in entry 152a. Please load it into tα2 3
35), enter the address of the loaded extended supervisor call interrupt routine 18H in subentry 1523 a
336), sets the extended supervisor call interrupt handling flag in subentry 1522a to indicate that it has been loaded (337), and executes the extended supervisor call interrupt routine in the same manner as in the loaded case. Control is passed to 18a (34).

Further, the execution of the user program 16b progresses, and as shown in FIG.
611 and the routine name 1612b of the extended supervisor call interrupt processing routine 18b are executed, the extended supervisor call interrupt processing registration routine 13 is called (CAL
L13.61).

Extended supervisor call interrupt processing registration routine 1
When 3 is called, it creates the extended supervisor call interrupt table 15b in the address space to which the user program 16b belongs (311), and uses the extended supervisor call interrupt code 1611 specified by the user.
is registered in the subentry 1521b of the table 15b, and the extended supervisor call interrupt processing routine name 1612b is registered in the subend 524b.
12, 313), updates the count section 151b (3
14). Also, the extended supervisor call interrupt table pointer 1 of the address space control table 14b corresponding to the extended supervisor call interrupt table 15b
Extended supervisor call interrupt table 1 in 41b
The address of 5b is set (315).

When the execution of the user program 16b further progresses and the extended supervisor call interrupt instruction 162b is executed,
Supervisor call interruption occurs 62.63)
, the system searches the system's supervisor call interrupt table 11 for the extended supervisor call interrupt code 1611 possessed by the extended supervisor call interrupt instruction 162b, and searches the extended supervisor call interrupt table 11 for the extended supervisor call interrupt code 1611 of the extended supervisor call interrupt instruction 162b, and searches the extended supervisor call interrupt table 11 for the extended supervisor call interrupt code 1611 of the extended supervisor call interrupt instruction 162b. Control is passed to the call interrupt processing management routine 12.

Extended supervisor call interrupt processing management routine 1
2 takes control and then points to the extended supervisor call interrupt table pointer 1 in the address space control table 14b corresponding to the address space where the interrupt occurred.
The end 'J152b in the extended supervisor call interrupt table 15b indicated by 41b is searched, and the extended supervisor call interrupt code stored in the sub-entry 1521b and the extended supervisor call interrupt code held by the extended supervisor call interrupt instruction 162b are searched. It is determined whether or not the call interrupt code 1611 is a match (332). If no match is detected as a result of this determination, the process proceeds to step 333, and if there is another entry in the extended supervisor call interrupt table 15b, the process proceeds to step 332. Returning to 331, the same process is repeated, and if there is no other entry and the code with -4 is not found, it is treated as an error (338). If a match is detected in step 332 - subentry 1522 determines whether the extended supervisor call interrupt routine 18b with the interrupt code for which the failure was detected is already loaded into virtual memory 2;
Judgment L (334) is made by identifying the contents of the extended step interrupt processing flag stored in subentry 1523b. Control is passed to the stored extended supervisor call interrupt routine 18b (34). If the extended supervisor call interrupt routine 18b is not loaded, the extended supervisor call interrupt routine 18b is dynamically loaded from the dynamic load library 17 using the extended supervisor call interrupt routine name 1612b stored in the subentry 1524b in the end l7152b. tentative#! Load it into memory 2 3
35), Add the address of the loaded extended supervisor call interrupt routine 1lllb to the subend IJ15
23 b 336), Subet January 522
Set the extended supervisor call interrupt processing flag in b to indicate that it has been loaded (337)
. Then, control is passed to the extended supervisor call interrupt routine 18b in the same way as in the loaded case (34).
.

As described above, by using one element 112+1 in the supervisor call interrupt table 11, address spaces a and b can each use their own extended supervisor call interrupt routines 13a and 18b. In this embodiment, other user programs 16n can similarly use the same interrupt code 1611 to use their own extended supervisor call interrupt routine 18n. For example, if it is desired to use a plurality of different extended supervisor call interrupt routines in one user program 16, the extended supervisor call interrupt processing routines may also be applied to other elements in the supervisor call interrupt table 11, such as element 112b. The management routine 12 may be registered and a code corresponding to the second line 12b etc. may be used as the extended supervisor call interrupt code.

〔Effect of the invention〕

As described above, according to the present invention, an extended supervisor call interrupt processing management routine is registered in the supervisor call interrupt table of the system, an extended supervisor call interrupt table is created for each address space, and the extended supervisor - Extended supervisor call JI specified by the user in the call interrupt table! By registering the interrupt routine name, you can use one element in the system's supervisor call interrupt table in which the extended supervisor call interrupt processing management routine is registered, i.e., use one interrupt code to run any of the address spaces. It becomes possible to dynamically load and execute a unique extended supervisor call interrupt processing routine. Therefore, even if the number of user supervisor call interrupt codes is small, it is possible to execute many user-developed supervisor call interrupt processing routines, and it is also possible to incorporate them into the system at any time after the system is operational. effective.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an information processing system to which an embodiment of the present invention is applied. FIG. 2 is a flowchart showing an example of preprocessing in the embodiment of the present invention. FIG. 3 is a flowchart showing an example of processing in the user program 16a. , FIG. 4 is a block diagram showing a processing example of the extended supervisor call interrupt processing registration routine 13, FIG. 5 is a flowchart showing a processing example of the extended supervisor call interrupt processing management routine 12, and FIG. 6 is a flowchart showing a processing example of the extended supervisor call interrupt processing management routine 12. 2 is a flowchart showing an example of processing in FIG. In the figure, 1...Central processing unit, 2...Virtual memory, 3...Auxiliary storage device, 11...Supervisor.
Call interrupt table, 12...Extended supervisor call interrupt processing management routine, I3...Extended supervisor call interrupt processing registration routine, 148-
14n...Address space control table, 15a-15n
...Extended supervisor call interrupt table, 1
6a-16n...User program, 17...Dynamic load library, 18a-13n...Extended supervisor call interrupt routine

Claims (1)

[Claims] In an information processing system that supports multiple address spaces that perform supervisor call interrupt processing, an extended supervisor call interrupt processing management routine is registered in an element of a supervisor call interrupt table, and each An address space control table and an extended supervisor call interrupt table created for each address space, an extended supervisor call interrupt code corresponding to the element in which the extended supervisor call interrupt processing management routine is registered, and an extended supervisor call interrupt table to be used. In response to a macro instruction in a user program containing a routine name of a call interrupt routine, the extended supervisor call interrupt code and the extended supervisor call interrupt are stored in the extended supervisor call interrupt table corresponding to the address space to which the user program belongs. extended supervisor call interrupt processing registration means for registering the routine name and the address of the registered table in the address space control table corresponding to the address space to which the user program belongs; When an interrupt is generated by an extended supervisor call interrupt instruction that has an extended supervisor call interrupt code corresponding to an element in which a supervisor call interrupt processing management routine is registered, the extended supervisor call interrupt processing management routine registered in that element The extended supervisor call interrupt handling management routine transfers control to the extended supervisor call interrupt processing management routine based on the contents of the address space control table and the extended supervisor call interrupt table that correspond to the address space to which the user program that generated the interrupt belongs. A dynamically enhanced supervisor call interrupt handling method configured to pass control to a call interrupt routine.