JPH02244341A - Execution subroutine debugging information output trace system - Google Patents

Abstract

PURPOSE:To easily gather debugging trace information by utilizing debugging options in compilation. CONSTITUTION:A subroutine recognizing means 2 recognizes whether or not there is a subroutine call in a statement read in by a source read means 1. When there is the subroutine call in the source program read in by the source read means 1, a debugging trace generation decision means 3 decides whether or not a subroutine debugging trace statement is generated. This decision making is indicated depending upon whether or not there is the debugging option in the compilation. When the generation of debugged statements is indicated by the debugging trace generation decision means 3, a debugging trace generating means 4 generates a debugging flag, a function name, an argument name, a print statement for displaying an in-execution value according with the format of a subroutine before the machine word instruction of the subroutine. Consequently, the debugging trace information can be easily gathered.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an execution subroutine debug information output tracing method for generating a refogram displaying subroutine names and arguments.

(Prior Art) It has been known that in order to debug a program, debug information is collected in some form. To collect debug information.

There are two methods below.

The first method is to insert statements for collecting debug information into the source program. The second method is to set breakpoints in a software debugger, stop program execution midway through execution, and collect debugging information.

(Problems to be Solved by the Invention) In the conventional debug trace information convergence method as described above, the first method requires manual insertion of logic into the program, which is extremely troublesome to operate. Another disadvantage is that it is easy to make logic errors. On the other hand, the second method described above has the disadvantage that it is cumbersome to operate because it is necessary to instruct the software debugger to stop the execution operation many times during execution.

An object of the present invention is to read a source program as part of the compiler's translation process, recognize whether or not there is a subroutine call in the next source program, and output debug trace statements using the debug option at compile time. All of the above-mentioned drawbacks can be removed by determining whether the subroutine is possible or not, displaying the subroutine name and its argument value in a good format according to the format when outputting a debug trace, generating executable statements, and performing compiler translation processing. The object of the present invention is to provide a next execution subroutine debug information output tracing method that is configured to facilitate operation tm.

(Means for Solving the Problems) The execution subroutine depack information amount quadrase method according to the present invention includes a source reading means, a subroutine call recognition means, a debug trace generation determination means, and a debug trace generation means.

It is convenient to have a translation processing means.

The source reading means is intended to read the sentences of the source program as part of the translation process of the combiner 2.

The subroutine call recognition means is for recognizing whether or not a subroutine call exists in the nine source programs read.

The debug trace generation determination means is for determining whether or not a depack trace statement can be output based on the debug option at compile time.

When outputting a debug trace, the debug trace generating means displays the subroutine name and subroutine argument value, and the ninth generates an executable statement.

The translation processing means is a sophisticated one that performs translation processing of the compiler.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an execution subroutine debug information output tracing method according to the present invention.

FIG. 1 is a block diagram showing an example of outputting debug information, and the processing flow here is incorporated as part of the compiler processing.

In FIG. 1, 1 is a source reading means, 2 is a subroutine call iil! 3 is a debug trace generation determination means, 4 is a debug trace generation means, and 5 is a translation processing means.

First, the source reading means 1 reads the sentences of the source program line by line. Subsequently, the subroutine call recognition means 2 parses the syntax read by the source reading means 1 and recognizes whether or not there is a subroutine call code in the sentence.

When there is a subroutine call in the source program read by the source reading means 1, the debug trace generation determination means 3 determines whether or not to generate a subroutine debug trace statement. The instructions for this judgment depend on the presence or absence of the compile-time notebag option. When there is an instruction to generate a debug statement by the debug trace generation determination means 3, the debug trace generation means 4 generates a debug flag, a function name, and a function name for the subroutine.
An argument name and a print statement for displaying a runtime value according to the format of the subroutine are generated before the machine language instruction of the subroutine.

The translation processing means 5 performs normal compiling processing.

Figure 2 is a friend sample program in which a source program and subroutine debug trace statements are embedded.
It is described in the following language.

To facilitate understanding, an example of a sample program will be explained with reference to FIG.

In the example of the input source program shown in FIG. 2, the input source program is written in 0 language. The modified program is after debugging options have been specified by the compiler.

The corresponding process corresponds to the 8th line number in the sample program. That is, the statement Put2 (c sb); is included in the subroutine call.

In the 0 language, this is called a function call. Therefore, if (debug) Pr1nt f ('Put2-
(cm%8, b-yaku) ■ ■ ■
■■＼n”*Csb): Generates the sentence.

If (debug) B indicates that the following statements are executed when the debug flag is on.

This type of debug is generated using real number variables as an external declaration statement in the first line after conversion. The purpose of this statement is that since it is set when the sample program is executed, it is possible to select whether or not to output the debug information. For example, if used in conjunction with a software debugger, it becomes possible to collect partial debugging information.

■Prfnt (... means to display the contents of 1...'' with 0 description. It is embedded so that it can be done.

■ and ■ are the formats of variable names C and b (Cμ character string, b
is a real number) generated by the compiler so that it can be displayed in a t-satisfying format. In the sample program, the translation processing means 5 generates a machine R that deals with the sentence Put2.

(Effect of the invention) As explained above, the present invention provides (7) f/
(Using the TS/OPS menu has the effect of being able to collect the entire debug trace information at once.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the execution subroutine debug information amount quadrase method according to the present invention. FIG. 2 is a sun program diagram showing an example of a source program. l...Source reading means 2...φ subroutine call recognition means 3...Debug trace generation determination means 4...Debug trace creation means 5...Translation processing means (male)

Claims (1)

[Claims] a source reading means for reading statements of a source program as part of a compiler's translation process; a subroutine call recognition means for recognizing whether or not a subroutine call exists in the read source program; A debug trace generation determination means for determining whether a debug trace statement can be output based on a debug option, and a debug trace generation determination means for generating an executable statement to display the subroutine name of the subroutine and the argument value of the subroutine when outputting the debug trace. 1. An execution subroutine debug information output tracing method, comprising: a trace generation means; and a translation processing means for performing translation processing of the compiler.