JPH0239331A - Debug sentence producing device - Google Patents

Abstract

PURPOSE:To easily collect the debug information by designating a debug option at compiling. CONSTITUTION:A program name reading process means 1 analyzes a given debug option and extracts a program name and the line numbers 1 and 2. When a compiling process is started, a source reading process means 2 reads a source program sentence and then confirms the coincidence between the program name extracted by the means 1 and the read source program name. Then a line number reading process means 3 confirms whether the source program sentences read with both line numbers 1 and 2 are corresponding to each other or not. When this coincident condition is secured, a debug sentence production deciding process means 4 decides whether the relevant sentence should be executed or not. If so, a debug sentence producing process means 5 produces automatically a debug information sentence suited to the type of the variable of the relevant sentence.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic debug statement generation device that automatically outputs debug information when a program is executed.

〔overview〕

The present invention is a means for collecting debug information when a program is executed and debugged, and the present invention automatically collects debug information during program execution by creating debug statements within a range in which debug options are specified at compile time. This allows it to be output.

[Conventional technology]

Conventional methods for collecting debugging information when debugging a program are: (1) inserting a statement to collect debugging information into the source program; (2) interrupting the program with a debugger and then Sometimes there are ways to collect debug information.

[Problem that the invention seeks to solve]

Among these conventional methods, method (1) has the disadvantage that it takes time and effort to insert statements, and that the logic of the program may be accidentally destroyed when modifying the source. Also,
Method (2) has the disadvantage that debugging efficiency is significantly reduced for users who only have knowledge of high-level languages on computers that do not support a debugger or on computers that are supported by a debugger that performs address-based debugging.

The present invention aims to eliminate such drawbacks, and aims to provide a debug statement generation device that can automatically output debug information when a program is executed.

[Means for solving problems]

The present invention provides a storage means for storing a source program including debug information statements, a storage means that analyzes a given debug option, and collects the name of the source program for which debug information statements are to be collected and the debug information statements within this source program. an option reading means for extracting line numbers indicating a start position and an end position; a source reading means for extracting a source program matching the name extracted by the option reading means from the storage means; A line number reading means that checks whether a source program exists between the line numbers extracted by the option reading means, and whether the source program checked by this line number reading means is an executable statement or not. The present invention is characterized by comprising a debug statement generation determination means and a debug information statement generation means for generating a debug information statement based on a source program that is confirmed to be an executable statement by the debug statement generation determination means.

[Effect]

Analyzes the debug options for the program name, debug start line number, and debug end line number.

Check whether the source program matches this debug option and read the source program statements. Check whether the loaded source program statement corresponds to the debugging start line number and debugging end line number in the debug option. It is determined whether the read source program statement is an executable statement. If it is an executable statement, generate a debug information statement that matches the type of the variable in the statement.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. 1st
The figure is a block configuration diagram showing the configuration of this embodiment.

As shown in FIG. 1, this embodiment includes a program name reading processing means 1, a source reading processing means 2, a line number reading processing means 3, a debug statement generation determination processing means 4, and a debug statement generation processing means. 5, object generation processing means 6, and source program storage means 10. That is, in this embodiment, the source program storage means 10, which is a storage means for storing a source program including a debug information statement, analyzes a given debug option,
A program name reading processing means 1 which is an option reading means for extracting the name of a source program for which debugging information statements are to be collected and line numbers indicating the start and end positions of collecting debugging information statements in this source program; A source reading processing means 2, which is a source reading means, extracts from the storage means a source program that matches the name extracted by the means, and a source program extracted by this source reading means has a line number corresponding to the line number extracted by the option reading means. a line number reading processing means 3, which is a line number reading means for checking whether or not the line number exists between the lines, and a debug statement generation determination means for checking whether the source program checked by the line number reading means is an executable statement. A certain debug statement generation judgment processing means 4, and a debug statement generation processing means 5 which is a debug information statement generation means that generates a debug information statement based on a source program that is confirmed to be an executable statement by this debug statement generation judgment means. Equipped with

FIG. 2 is a flow diagram showing the operation of this embodiment. The operation of this embodiment will be explained based on FIG.

First, the program name reading processing means 1 analyzes the given debug option and extracts the program name, line number 1, and line number 2 (step S1). Following this,
Compilation processing begins. First, the source program statement is read by the source reading processing means 2, and it is checked whether it matches the program name extracted by the program name reading processing means 1 (step S3). Next, the line number reading processing means 3 checks whether or not the read source program statement corresponds between line number 1 and line number 2 (step S3
). If this condition is met, the debug statement generation determination processing means 4 confirms whether the statement is an executable statement or not (step S4). If the statement is an executable statement, the debug statement generation processing means 5 automatically generates a debug information statement that matches the type of the variable of the statement (step S5). The object generation processing means 6 generates machine language by translating the sentence in the same manner as the sentence coded by the user (step 36). This series of processes is repeated until there are no more source programs left to manually perform.

FIG. 3 is a diagram showing a state in which a debug information statement is embedded in a source program image of an object resulting from compilation by specifying a source program and debug options.

For example, the debug option specification is -DB (program name, line number 1, line number 2).

Here, the program name is the name of the program for which you want to collect debug information (for example, the function name in C language),
Line number 1 specifies the starting position for collecting debugging information in the program specified by the program name, and is a relative line number from the first line in the program, and line number 2 ends collecting debugging information. This is the line number corresponding to the line number 1 mentioned above. Specify this as a compile-time option. Debug information collection statements will not be generated unless this debug option is specified. In FIG. 3, the debug option is specified as -DB (main, 6.7). This is the program name mai
Indicates that debug information from the 6th line to the 7th line of n is to be output. The lower part of Figure 3 is the source program image after being compiled with the debug option. The arrows indicate the debug information sentences corresponding to line numbers 6 and 7, respectively, and printf(“main:3a CD =%dl2%
When you execute dXXn , a [i] , i);, main: 3 a Ci') = Oi = 0 is displayed, and the value of a (i) in the 3rd line of the program name main and i
The value of is displayed in a format appropriate to the type of the variable (%d, ie, decimal notation). The seventh line is also displayed in the same way.

〔Effect of the invention〕

As explained above, the present invention has the advantage that debug information can be easily collected by specifying debug options at the time of compilation.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a flow diagram showing the operation of the embodiment of the present invention. FIG. 3 is a comparison diagram showing a source program and a compiled source program image. 1... Program name reading processing means, 2... Source reading processing means, 3... Line number reading processing means, 4... Debug statement generation determination processing means, 5... Debug statement generation processing means, 6...Object generation processing means, 10...
- Source program storage means.

Claims (1)

[Scope of Claims] 1. Storage means (10) for storing a source program including debug information statements, and the name of the source program for analyzing given debug options and collecting debug information statements and the information contained in this source program. an option reading means (1) for extracting line numbers indicating the start and end positions for collecting debug information sentences; and a source reading means (1) for extracting from the storage means a source program that matches the name extracted by this option reading means. means (2); line number reading means (3) for checking whether the source program extracted by this source reading means exists between the line numbers extracted by the option reading means; and this line number reading means. a debug statement generation determination means (4) for determining whether the source program confirmed by the above is an executable statement; 1. A debug statement generation device comprising: debug information statement generation means (5).