JPH02216546A - Program debugging supporting system for information processing system - Google Patents

Abstract

PURPOSE:To learn the number of the passing times of respective brake points and a passing order by stacking a counter value in stack areas corresponding to the brake points at the passing timing of respective brake points while a program in which plural brake points are set travels. CONSTITUTION:At the time of program debugging, an address setting the brake point is previously inputted from an input means 3 to a program to be debugged 20, and a brake point setting means 10 sets the brake point by replacing the instruction of the set address with an interruption generation instruction. A stack area securing means 11 secures the stack areas 21 respective brake points in a main storage device 2. An interruption occurs at the time of passing the brake point while the instruction is executed, and an interruption discrimination means 15 stores the value of counter 16 in the stack area 21 of the corresponding brake point through a stack storage means 14.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a program debugging support method for an information processing system.

[Conventional technology]

Conventionally, this type of program debugging support method sets multiple breakpoints in a program and prepares a counter for each breakpoint, and when 10 grams runs and passes each breakpoint, a counter corresponding to the breakpoint is set. By counting up, the number of times a breakpoint was passed was measured and the flow of the program was debugged.

[Problem to be solved by the invention]

The conventional program debugging support method described above has a counter for each breakpoint and measures the flow of program control by measuring the number of times the breakpoint has passed. When measuring the program control flow by setting , there is a drawback that the program control flow when used for the first time is confused with the program control flow when used for the second time, making it unclear. .

[Means to solve the problem]

The program debugging support system of the present invention includes a breakpoint setting means for setting breakpoints in a program to be debugged, and a stack area securing means for securing a stack area corresponding to each breakpoint set by the breakpoint setting means. a stack area secured by the stack area securing means and storing stack data corresponding to each of the breakpoints set by the breakpoint setting means; and a counter that updates a counter value each time the stack data is read. ,
When the program to be debugged runs and passes a breakpoint, it is configured to include stack storage means for reading the value of the counter and storing the value in the stack area.

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

Referring to FIG. 1, one embodiment of the present invention comprises a central processing unit 1, a main memory 2, input means 3, and output means 4. The central processing unit 1 also includes a breakpoint setting means 10, a stack area securing means 11, an instruction execution means 1.2, an interrupt detection means 13, a stack storage means 14, an interrupt determination means 15, and a counter 16. , a stack content editing means 17, and the main storage device 2 further includes a debug target program 20 and a stack area 21.

Next, the operation of the embodiment of the present invention will be explained with reference to the drawings.

When debugging a program, an address for setting a breakpoint in the program 20 to be debugged is input in advance from the input means 3. Breakpoint setting means lO
sets a breakpoint in the program 20 to be debugged by replacing the instruction at the address input from the input means 3 with an instruction that causes an interrupt. 2, a stack area 21 is secured for each breakpoint.

Furthermore, when debugging a program, the instruction execution means 12 extracts and executes instructions of the program 20 to be debugged one by one. When an interrupt occurs at a breakpoint during instruction execution, the interrupt is detected by the interrupt detection means 13 and notified to the stack storage means 14. After the interrupt determining means 15 determines which breakpoint the interrupt corresponds to, the stack storing means 14 stores the interrupt in the corresponding stack area 21 using the counter 16.
Read the value of and stack it.

When referring to the area 21 for each breakpoint, the stack content editing unit 17 reads and edits the contents of the stack area 21 according to instructions from the input unit 3, and then the edited contents of the stack area 21 are output to the output unit. Output from 4.

〔Effect of the invention〕

As explained above, the present invention runs a program with multiple breakpoints set, and when a breakpoint is passed, a counter value is stacked in the stack area corresponding to each breakpoint. This has the effect of clarifying the number of times a point has been passed and the order in which the point has been passed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. 1...Central processing unit, 2...Main storage device, 3...
Input means, 4... Output means, 10... Break point setting means, 11... Stack area securing means, 12
. . . Instruction execution means, 13 . . . Interrupt detection means, 14
. . . stack storage means, 15 . . . interrupt determination means,
16... Counter, 17... Stack content editing means, 20... Def "bug target program, 21... Stack area.

Claims (1)

[Claims] A breakpoint setting means for setting breakpoints in a program to be debugged; a stack area securing means for securing a stack area corresponding to each breakpoint set by the breakpoint setting means; and a stack area securing means secured by the stack area securing means. a stack area for storing stack data corresponding to each of the breakpoints set by the breakpoint setting means; a counter for updating a counter value each time the stack data is read; 1. A program debugging support method for an information processing system, comprising: stack storage means for reading the value of the counter and storing the value in the stack area when a breakpoint is passed.