JP2001134462A - Program debug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a debug operator to quickly understand the flow of a program by stopping the display of any code inserted for debug on a debugger screen in a debugger so that the operator can not be confused by any inserted code which is totally different from the original flow of the program. SOLUTION: Any added code for debug which is not necessary for a debug operator is deleted, and an existing debug function is made available.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program debugging device used for developing a program, and more particularly to a device capable of debugging using a source code file.

[0002]

2. Description of the Related Art Conventionally, when debugging a program, a process for debugging is often inserted into a source code. Many are inserted by the debugger, and there is not much processing to insert at a time, and the description of the processing for debugging did not hinder the progress of debugging. However, recently, program debugging support tools that automatically insert debugging processes into source code have appeared, and these tools may insert a large amount of debugging code. When debugging is performed using a source program in which the debugging code is embedded, the debugging code is displayed on the debugger screen as it is.

[0003]

The conventional method has problems. With the conventional debugger, the code inserted for debugging is displayed on the debugger screen, so when a large amount of debugging code is inserted, the inserted code is completely different from the original program flow Therefore, there has been a problem that the debug operator cannot quickly understand the flow of the program.

[0004]

In order to solve these problems, a file contents display device and a program debug device according to the present invention, according to the first aspect of the present invention, comprise a file line deletion unit and a file display unit. ,Also,
According to a second aspect of the present invention, there is provided a file line deleting unit, a file display unit, and a debug information line number correcting unit. A correction unit, a display suppression address area information generation unit, and a disassembly display unit. In the invention according to claim 4, a line deletion unit in a file and a file display unit, a line number correction unit in debug information, a display suppression address region information It consists of a generator and a real-time trace display.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing a configuration of a file display device according to an embodiment of the present invention. FIG.
, The file content display device 1 reads the file 5 to be displayed. The read file 5 is input to the in-file line deletion unit 2. In addition, the file display suppression information 6 for designating a line in the file 5 whose file display is to be suppressed is also input to the read file line deletion unit 2.
The file in which the line specified by the line deletion unit 2 is deleted is output as the temporary file 7. The file display section 4 reads and displays the temporary file 7. FIG. 5 shows file 1
The content example of the file display suppression information 6 is 45, and the content example of the file display suppression information 6 is 45. Although a file 44 is created by adding a line to the original file 43, the line information that is the difference is used as the file display suppression information. In the file content example 45 of the file display suppression information 6, the inserted line number and the number of consecutively inserted lines are recorded. FIG.
Shows the processing algorithm of the in-file line deletion unit. First, all the contents of the temporary file 7 are erased, and then the file 5 is read to determine whether it is the end of the file. If it is not the end of the file, one line of data is read from the file 5. It is determined whether the line number of the read line exists in the file display suppression information 6. If present, read next line. If it does not exist, it outputs one line of read data to a temporary file. This process is continued until the end of the file 7, and after the creation of the temporary file 7 is completed, the file 7 is displayed on the file display unit 4.

FIG. 2 is a block diagram showing a configuration of a program debugging device according to an embodiment of the present invention. In FIG. 2, the program debugging device 8 temporarily deletes the contents indicated in the file display suppression information 13 by the operation of the in-file line deletion unit 9 based on the source file 12 and the file display suppression information 13, as in the first embodiment. The file 14 is generated, and the temporary file 14 is displayed on the source file display unit 10. On the other hand, source file 1
Since the object code debug information 15 including the information for debugging the executable object generated from Step 2 cannot correspond to the temporary file 14,
The object code debug information 15 and the file display suppression information 13 are input to the debug information line number correction unit 11 to generate corrected object code debug information 16 corrected for the line number. This debug information 1
Reference numeral 6 is the same as that used in a normal debugger. Debugging information is used to set breakpoints and display information of various programs, but these operations are not hindered at all. FIG. 7 shows a representative part of the information related to the line number in the object code debug information 15. In this table, a required number of pieces of information in which a set of a machine language start address 47 and a machine language end address 48 corresponding to the line number 46 of the source file and the processing included in the line are stored. FIG. 8 shows a flow of the debug information line number correction process in the debug information line unit in the debug information line number correction unit 11. N indicating the number of deleted rows is set to 0. Read debug information corresponding to the source file. If the line number in the read line number information is registered in the file display suppression information 13, the line number information is deleted from the debug information, and 1 is added to N. If the line number in the read line number information is not registered in the file display suppression information 13, the line number in the debug information and the line number of the read line number information is reduced by N. This is repeated until the end of the debug information.

FIG. 3 is a block diagram of a configuration of a program debugging device according to an embodiment of the present invention. In FIG. 3, the program debugging device 17 temporarily deletes the contents indicated in the file display suppression information 24 by the operation of the in-file line deletion unit 18 based on the source file 23 and the file display suppression information 24, similarly to the invention of claim 2. The file 25 is generated, and the source file display unit 19
The temporary file 25 is displayed. On the other hand, since the object code debug information 26 including the information for debugging the executable object generated from the source file 23 cannot correspond to the temporary file 25, the object code debug information 26 and the file display suppression information 24 are not stored. Debugging information line number correction unit 20
To generate the corrected object code debug information 27 corrected for the line number. The operation so far is the same as that of the second aspect. Here, the machine language program 29 generated from the source file 23 cannot naturally completely correspond to the temporary file 25 generated from the in-file line deletion unit 18. That is, when the machine language program 29 is disassembled and displayed using mnemonics, processing that does not exist in the temporary file 25 is displayed. Therefore, the object code debug information 26 and the file display suppression information 24 are input to the display suppression address area information generation unit 21, where the display suppression address area information 28 is generated, and the disassembly is performed based on this information and the machine language program 29. The display unit 22 disassembles the machine language program 29. At this time, when disassembling the portion indicated by the display suppression address area information 28 using a mnemonic or the like, highlighting or blank display is performed. FIG. 9 shows the contents of the display suppression address area information. In this information, the start address 49 and the end address 50 of the machine language corresponding to the line in the file display suppression information 24 are stored by the number of line information in the file display suppression information 24. The disassembled display of the machine language portion corresponding to the address area indicated by this information is highlighted or hidden. FIG. 10 shows the display suppression address area information generation processing. The line number information is read from the debug information, and if the line number in the read line number information exists in the file display suppression information 24, the machine language start address and the machine language end address in the line number information are displayed in the display suppression address area. Add to information. This process is repeated until the end of the debug information.

FIG. 4 is a block diagram showing a configuration of a program debugging device according to an embodiment of the present invention. In FIG. 4, the program debugging device 30 deletes the contents indicated in the file display suppression information 37 by the operation of the in-file line deletion unit 31 based on the source file 36 and the file display suppression information 37, as in the second embodiment. A file 38 is generated, and the source file display unit 32
Displays the contents of the temporary file 38. On the other hand, since the object code debug information 39 including the information for debugging the executable object generated from the source file 36 cannot correspond to the temporary file 38, the object code debug information 39 and the file display suppression information 37 are It is input to the debug information line number correction unit 33 to generate corrected object code debug information 40 corrected for the line number. The operation so far is the same as that of the second aspect. Here, the machine language program generated from the source file 36 cannot naturally correspond completely with the temporary file 38 generated from the in-file line deletion unit 31. That is, when the machine language program is executed and the execution contents are traced in real time, the data of the real-time trace result includes processing that does not exist in the temporary file 38 displayed on the source file display unit 32. Will be.
Therefore, the object code debug information 39 and the file display suppression information 37 are input to the display suppression address area information generating section 34, where the display suppression address area information 41 is generated, and the real-time trace data 42 is displayed on the real-time trace display section 35. At this time, the location where the address area is executed for the location indicated by the display suppression address area information 41 is highlighted or the display is deleted.

[0010]

As described above, the file content display device according to the first aspect of the present invention can delete and display information that hinders the file viewer from understanding unnecessary files. The program debugging device according to the invention of the present invention can use the function of the debugging device without any problem even if unnecessary processing is deleted from the source file and displayed, so that a large amount of debugging code is inserted into the source file. However, since the program debugging device can use all the debugging functions without hindering the understanding of the program, the debugging efficiency can be improved.

Further, the program debugging apparatus according to the third aspect of the present invention inserts a large amount of debugging code into the source file by emphasizing or deleting a portion where unnecessary processing is deleted from the source file by disassembling display. Even if it does not hinder the understanding of the program at the machine language level, the debugging efficiency can be improved.

The program debugging apparatus according to the fourth aspect of the present invention can highlight or delete a portion where unnecessary processing has been deleted from the source file in the result of the real-time trace, and can insert a large amount of debugging code. Real-time tracing can be fully utilized even when left as is, and debugging efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a configuration of a file content display device according to an embodiment of the present invention;

FIG. 2 is a block diagram showing a configuration of a program debugging device according to an embodiment of the present invention;

FIG. 3 is a block diagram showing a configuration of a program debugging device according to an embodiment of the present invention;

FIG. 4 is a block diagram showing a configuration of a program debugging device according to an embodiment of the present invention;

FIG. 5 is a diagram showing an example of a source file and file display suppression information.

FIG. 6 is a diagram showing an example of a file line deletion process;

FIG. 7 is a diagram showing an example of the contents of line number information inside object code debug information.

FIG. 8 is a diagram illustrating an example of a line number correction process in debug information in units of a source file.

FIG. 9 is a diagram showing an example of the content of display suppression address area information.

FIG. 10 is a diagram illustrating an example of display suppression address area information generation processing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 File content display device 2 File line deletion part 4 File display part 5 File 6 File display suppression information 7 Temporary file 8 Program debugging device 9 File line deletion part 10 Source file display part 11 Debug information line number correction part 12 Source file 13 File Display suppression information 14 Temporary file 15 Object code debug information 16 Corrected object code debug information 17 Program debugging device 18 Line deletion unit in file 19 Source file display unit 20 Line number correction unit in debug information 21 Display suppression address area information generation unit 22 Disassembly Display unit 23 Source file 24 File display suppression information 25 Temporary file 26 Object code debug information 27 Object code debug information after correction 28 Table Suppression address area information 29 Machine language program 30 Program debug device 31 Line deletion section in file 32 Source file display section 33 Line number correction section in debug information 34 Display suppression address area information generation section 35 Real-time trace display section 36 Source file 37 File display suppression information 38 Temporary file 39 Object code debug information 40 Corrected object code debug information 41 Display suppression address area information 42 Real-time trace data 43 One example of source file before debugging code is inserted 44 One example of source file after debugging code is inserted 45 File display Example of suppression information 46 Line number 47 Machine language start address 48 Machine language end address 49 Display suppression machine language start address 50 Display suppression machine language end address

Claims (4)

[Claims] 1. A file content display device comprising a file input unit, a file line deletion unit, and a file display unit, wherein an area specified in file display suppression information is not displayed on the file display unit. 2. The system according to claim 1, further comprising a line number correction unit in the debug information, wherein the line number in the debug information is corrected based on the specified line number based on the file display suppression information. Program debugging device. And a display suppression address area information generation section and a disassembly display section, wherein an address corresponding to an area specified by the file display suppression information is corrected by a line number correction section in the debug information. And a display suppression address area information generation unit, and highlights or hides the address area when disassembling and displaying the address area. 4. The invention according to claim 2, further comprising a display suppression address area information generation section and a real-time trace display section, wherein an address corresponding to an area specified by the file display suppression information is corrected by a line number in the debug information. And a display suppression address area information generation unit for emphasizing or hiding a real-time trace display of the address area.