JPH04229343A - Memory contents display system in interactive debugger - Google Patents

Abstract

PURPOSE:To edit and display the contents of a memory on a screen, etc., according to the description contents of an editing program by specifying the editing program in a dump command. CONSTITUTION:The editing program which is generated by using an editing description language is registered in a library file 5. When the dump command is inputted from a keyboard 4 during the use of the interactive debugger, an editing specification analyzing means 1 decides and analyzes whether or not there is the specification of the editing program in the dump command. Only when it is decided that there is the specification of the editing program in the dump command, an editing program retrieval means 2 checks whether or not there is the specified editing program in the dump command and reads it out and an editing program executing means 3 executes the read editing program while analyzing it, so that the contents of the memory are edited as described in the editing program and then displayed on a display device 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying memory contents in an interactive debugger, and more particularly to a method for displaying memory contents in an interactive debugger that specifies display of memory contents on a screen or the like using a dump (DUMP) command.

0002

2. Description of the Related Art Conventionally, in the memory contents display method in this type of interactive debugger, the contents of the memory are displayed in binary, decimal, hexadecimal or It was designed to be converted into one of the characters and displayed on the screen.

0003

[Problems to be Solved by the Invention] The memory content display method in the conventional interactive debugger described above displays the memory content in binary, decimal, or Since it was supposed to be converted to either hexadecimal numbers or characters and displayed, if you wanted to display the memory contents of structure data, you would have to convert it to hexadecimal numbers, making it difficult to determine the location of the data. For these reasons, the readability of the memory contents is significantly reduced.

[0004] Furthermore, in a chain structure in which data is sequentially chained by pointer data, the operability is also significantly degraded because each time one piece of data is referenced, it is necessary to trace the point data and input a dump command to display it. There is a drawback.

In view of the above points, an object of the present invention is to register an editing program created using an editing description language that describes how to edit and display the contents of a memory in a library file. To provide a memory contents display method in an interactive debugger, which enables the editing program to be specified in a dump command, and the contents of the memory to be edited and displayed on a screen or the like according to the description contents of the editing program. It is in.

[0006]

[Means for Solving the Problems] In the memory content display method in the interactive debugger of the present invention, in an interactive debugger that has a function of displaying the memory content on the screen etc. by a dump command, how to edit the memory content. A library file that registers an editing program created using an editing description language that describes what to display, and when a dump command is input while using an interactive debugger, the editing program is specified during the dump command. an edit designation analysis means that determines and analyzes whether the library file has an edit program specified; an editing program search means for examining and reading out the editing program, and an editing program execution means for executing the editing program read out by the editing program searching means while analyzing it, editing and displaying the contents of the memory as described in the editing program. have

[0007]

[Operation] In the memory contents display method in the interactive debugger of the present invention, a library file registers an editing program created using an editing description language that describes how to edit and display the contents of memory. When a dump command is input while the interactive debugger is in use, the edit specification analysis means determines and analyzes whether or not there is an edit program specification in the dump command, and the edit program search means uses the edit specification analysis means to dump the dump command. When it is determined that an editing program is specified in the command, it is checked whether the specified editing program exists in the library file and it is read out, and the editing program execution means analyzes the editing program read out by the editing program search means. The contents of the memory are edited and displayed as written in the editing program.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a memory content display method in an interactive debugger according to an embodiment of the present invention. The memory content display method in the interactive debugger of this embodiment is composed of an edit specification analysis means 1, an edit program search means 2, an edit program execution means 3, a keyboard 4, a library file 5, and a display device 6. has been done.

FIG. 2 is a diagram illustrating a dump command A1, an editing program A2, and a screen image A3 in the memory contents display method in the interactive debugger of this embodiment. "/?B2 F/" of the dump command A1 represents an address obtained by adding the hexadecimal number 'F' to the contents of base register No. 2, and is passed as a parameter to the editing program A2 as the address of the memory to be dumped. The editing program A2 has a program name of sample, and the address of the memory to which the dump command A1 dumps is stored in data inp. Statement A21 is the character string “common table” which is the argument value of the display function.
"dump" is displayed on the screen. Sentence A22
The hexcnv function converts the memory content indicated by data inp, which is the content of the first argument, to 10, which is the value of the second argument.
Convert the number of bytes to a hexadecimal string and display
It represents displaying on the screen using the y function.

[0011] The editing description language used to describe the editing program A2 has been newly created to describe how to edit and display the contents of the memory.

Next, the operation of the memory content display method in the interactive debugger of this embodiment configured as described above will be explained with reference to a specific example shown in FIG.

[0013] The user creates the editing program A2 in advance using an editing description language that describes how to edit and display the contents of the memory using an editor of the operating system, and registers it in the library file 5. do.

Assume that after registering the editing program A2 in the library file 5, the user inputs a dump command A1 from the keyboard 4 while an interactive debugger (hereinafter simply referred to as the debugger) is being executed.

[0015] When the debugger identifies the dump command A1, it activates the edit specification analysis means 1 and executes the dump command A1.
Analyze whether there is an editing program specified in 1.

If no editing program is specified in the dump command A1, the debugger processes the specified dump command A1, but in this example, since sample( ) is specified as the editing program, the editing program search means 2 Start.

The editing program search means 2 checks whether an editing program with the program name "sample" exists in the library file 5, and if it does not exist, the dump command A1 is treated as an error. In this example, the editing program A2 is Since it exists, library file 5
The editing program A2 is read from the program A2, and the editing program execution means 3 is activated.

The editing program execution means 3 executes the dump command A1 at the address "/" of the memory to be dumped.
? B2 F/'' (makes it a value obtained by adding the hexadecimal number 'F' to the contents of base register No. 2), sets it as the data inp of the editing program A2 as an argument, and starts executing the editing program A2.

The execution of statement A21 is executed using the character string "commontable dum" which is an argument of the display function.
p” is displayed on the display device 6.

The execution of statement A22 converts the contents of 10 bytes of memory indicated by the argument inp of the hexcnv function into a hexadecimal character string, and displays the returned value on the display device 6 as an argument of the display function.

[0021] When the execution of the editing program A2 is finished,
The processing of dump command A1 ends. The screen of the display device 6 at this point becomes as shown in screen image A3.

[0022]

[Effects of the Invention] As explained above, the present invention provides an editing description language that describes how to edit and display the contents of a memory, and creates a program in advance using the editing description language with an editor, etc. and register it as an editing program in the library file, and then specify the editing program with the dump command while using the interactive debugger to read the specified editing program from the library file and execute it according to the description of the editing program. By displaying the contents of the memory on the screen, etc., each field of the structure data can be displayed in a display format that matches the attributes or with a meaningful message depending on the contents written in the editing program. This has the effect of improving the readability of the content.

[0023] Furthermore, even in the case of data having a chain structure, it is possible to edit and output the data by following the pointer data in order at the same time, so there is an effect that the operability of the interactive debugger can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a memory content display method in an interactive debugger according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an input image of a dump command, a description of an editing program, and a screen image of a display device in the memory content display method in the interactive debugger of this embodiment.

[Explanation of symbols]

1 Edit specification analysis means 2 Editing program search means 3 Editing program execution means 4 Keyboard 5 Library file 6 Display device A1 Dump command A2 Editing program A3 screen image

Claims (1)

[Claims] [Claim 1] In an interactive debugger having a function of displaying the contents of memory on a screen etc. using a dump command,
A library file that registers an editing program written using an edit description language that describes how to edit and display the contents of memory, and a dump command that is entered while using an interactive debugger. an edit specification analysis means for determining and analyzing whether an editing program is specified in the command; and an edit specification analysis means for determining and analyzing whether an editing program is specified in the command; an editing program search means for checking and reading out whether or not there is an edited editing program; and an editing program searching means for checking and reading out the editing program read out by the editing program searching means, and executing the editing program while analyzing it to edit the contents of the memory as described in the editing program. 1. A method for displaying memory contents in an interactive debugger, comprising: means for executing a displaying editing program.