JPS59154556A - Information processor - Google Patents

Abstract

PURPOSE:To improve debugging efficiency by generating an interruption signal when contents obained from a debugging register and a mask register coincide with those obtained from an instruction code register and a mask register. CONSTITUTION:Debugging data (a) stored in a debugging register 10 and mask data (b) stored in the mask register 11 are ANDed by an AND circuit 13, whose output is inputted as masking bug data (d) to a comparing circuit 15. When a program is executed, an instruction (c) is stored in the instruction code register 12 and ANDed with the data (b) by and AND circuit 14, whose output is inputted as masking instruction data (e) to the circuit 15. The circuit 15 compares the data (e) with the data (d) and sends out the interruption signal (f) when they are dissident, causing an interruption. The debugging program is started by the signal (f) to perform debugging.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to an information processing apparatus, and particularly to an information processing apparatus with enhanced program debugging functions.

[Prior art]

When executing a program debugging function, a conventional information processing apparatus frequently performs an operation of changing a specific instruction to a branch instruction to a debug group immediately before executing the instruction.

However, when using these program debugging functions, the following operations were required.

1. Manually convert all relative addresses of specific instruction addresses to absolute addresses while checking the program restructuring.

2.Specific command? Replace Is with a branch instruction, etc.

3. 1 for the number of specific instructions that exist on the program,
2 Complete return.

4 If the program is for overlay purchasing,
After reloading, repeat 2 or 3 gold again.

Therefore, the troublesome operations described above are necessary for the 1st step of program debugging in conventional information processing devices, which has the disadvantage that it is difficult to easily and efficiently perform program debugging. OBJECT OF THE INVENTION] An object of the present invention is to provide a TI'F information processing device that can improve the efficiency of debugging.

That is, an object of the present invention is to provide a clearing information processing device that can easily and efficiently perform program update without the need for address calculation of a specific instruction location and without the need to change the address to a designated branch instruction. It's all about providing.

[Structure of the invention]

The information processing device of the present invention includes a debug register that stores debug data arbitrarily set from the outside.

A mask register that stores mask data arbitrarily set from the outside, an instruction code register that stores instructions of the program being executed, and the above-mentioned data. a first logic circuit that masks the instruction with the mask theta and outputs masking instruction data; a second logic circuit that masks the instruction with the previous d1 mask theta and outputs the masking instruction data; The comparator circuit includes a comparator circuit that generates an interrupt signal for activation when the debug data matches the debug data.

In other words, the information processing device of the present invention has the contents stored in the instruction code register and the contents stored in the instruction code register. It is configured to compare the contents obtained from the mask register with the contents obtained from the mask register, and output a cutting signal when they match.

[Description of Examples] Next, actual examples of the present invention will be described in detail with reference to drawing ff and @opening.

FIG. 1 is a block diagram showing a practical example of the present invention.

The -r l'W information processing device shown in FIG. It consists of a mask register 11 capable of setting a value of 1iJ, and a comparison circuit 15.

IF! The 1' constant instruction is set in the debug register 10 as debug data a. At this time, mask data 1) is set in the mask register 11 indicating a portion of the debug data a set in the debug register IO that is desired to be made valid.

Here, the instruction C, operation code, operand 11, and operand 2 are made up, and depending on the mask data b stored in the mask register 11, these alone or any combination can be set to the debada register 10. The stored bug data a and the mask data stored in the mask register 11 are ANDed by the ND circuit 13, which is a first logic circuit, and the valid part to be compared is output as a mask bubbler "-ta d" to the comparison circuit. 15 is man-powered.

When the program is executed, the instruction C is stored in the instruction code register 12, and the mask data b stored in the mask register 11 and the second logic circuit A N are stored in the instruction code register 12.
I) The circuit 14 performs a logical product and uses it as masking command data e for comparison? 515.

The comparator circuit 15 compares the masking instruction data e and the masking instruction data d, and if they match, an interrupt signal f is sent and an interrupt is generated.This interrupt signal f starts the Tebug program, and the Tebug program is started. is executed.

In this way, the information processing device of the present invention can generate an interrupt when a specified part of any instruction matches by setting appropriate values in the debug register IO and mask register II. In response to this interrupt, the entire debugging blog can be started.

〔Effect of the invention〕

The information processing device of the present invention adds one instruction to the mask register instead of replacing the specific instruction with the branch address of the branch instruction to branch to the Zobug program at the branch address of the branch instruction. - The masking command data that was sent out after 17 scratches in the evening was not obtained after debugging 5'-taper-resistant masking data T''-7. When an incoming message Fj k occurs, this ?, l (Since the false signal activates the Frodaramke for Tebug, there is no need to manually rewrite a specific instruction to a branch instruction, which has the effect of saving 1 debugging efficiency.) .

1'4-That is, 1, the information processing device of the present invention
An interrupt signal is generated when a specific instruction's 4-body length part matches by setting arbitrary values in the register and mask register.
[By matching the means, one time command can be divided one by one.
'! This has the effect of allowing efficient progeran debugging without creating j1 nuisances for 'i' commands, etc.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention.

Claims (1)

[Claims] A debug register stores debug data set arbitrarily from the outside, a mask register stores mask data set arbitrarily from the outside, an instruction code register stores instructions of the program being executed, and a debug register stores the debug data set arbitrarily from the outside. a first logic circuit that outputs masking data after masking with the mask data; a second logic circuit that outputs masking instruction data after masking with the instruction front mask data; Previous■ Does it include a comparison circuit that generates an interrupt signal to start the debug program when it matches the self-masking debug data? Characteristic information processing device.