JPS63223927A - Multi-program symbol debug system - Google Patents

Abstract

PURPOSE:To efficiently execute the symbol debugging by designating a symbol and program discriminating information so that a symbol table can be referred to with respect to a designated program. CONSTITUTION:At the time of starting debugging, by reading a symbol table into a debugger by a debugger command, a value is stored already in a program discriminating information field 104 of a symbol table 101, a symbol field 107 and a symbol attribute field 108. By a program identifier 109 designated simultaneously with a symbol 110 in a command to a debugger, the program identifying information fields 104, 107 and 108 in plural symbol tables 101-103 are retrieved, in which one coincides with the symbol 110 is selected, and the value of the symbol attribute field corresponding to its symbol field goes to symbol attribute information. In such a way, plural programs can be debugged by the symbol existing at every program thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a program debugging method, and particularly to a symbol debugging method.

(Prior Art) Conventionally, as a tool for debugging programs, a program (hereinafter referred to as a symbolic debugger) that controls the execution of a program to be debugged while referring to a symbol table for the program has been used. It existed for each program.

traditional microprocessor, personal computer,
Symbolic debuggers on minicomputers and mainframes target only one program, and even debuggers that target multiple programs can only symbolically debug one program.

(Problem to be solved by the present invention) -However, in reality, multiple programs can exist in memory (for example, an operating system (O8) program and an application program), so multiple programs can be debugged at the same time. I need to be able to do it. In particular, in embedded systems using microprocessors (for example, systems incorporating O8 with multitasking functions), the object to be debugged is not just one program, but the entire system, and the OS programs and application programs that are the components of the system. It is necessary to be able to debug both at the same time.

However, the conventional symbolic debugger described above only holds one symbol table for a program, and cannot identify the same symbols between different programs. In addition, when referencing the symbol table of a different program, the debugger requires the user to issue a control command (hereinafter referred to as a command) to the debugger to read the symbol table into the debugger. The drawback was that it was time-consuming.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks, provide a function for easily specifying a symbol table for any program, and enable efficient symbol debugging.

(Means for Solving the Problems) The symbol debugging method of the present invention retains at least program identification information, and further stores symbols defined in the program corresponding to the program identification information and attribute information of the symbols. By specifying a symbol and program identification information, it is possible to refer to the symbol table for the specified program.

(Example) Next, the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining the present invention in detail. In FIG. 1, 101 is a symbol table, which includes a field 104 for storing program identification information (hereinafter referred to as program identification information field), a field 107 for storing symbol values (hereinafter referred to as symbol field), and It holds a field 108 (hereinafter referred to as a symbol attribute field) in which attribute information corresponding to a symbol value is stored. symbol field 1
Value stored in 07 and symbol attribute field 10
The values stored in 8 form pairs, and there are multiple values. 1
02.103 is also a symbol table that holds fields similar to 101, 105 is the program identification information field in 102 symbol table 2, and 106 is the 10
This is an identification information field in the 3-symbol table 3.

Further, 110 is a symbol specified in a command to the debugger, and 109 is a program identifier specified at the same time as the symbol. program identifier 10
9 holds a value that matches the value of the program identification information field of a certain symbol table.

Furthermore, 111 is attribute information for the symbol (hereinafter referred to as symbol attribute information).

The symbol table 1 of 101 will be described below.

First, when you start debugging a program, by reading the symbol table into the debugger using a debugger command, each field of the 101 symbol tables, that is, the program identification information field lO4, the symbol field 107, and the symbol attribute field 108, already has a value. is stored. In addition, 102.1
It is assumed that values are similarly stored in the symbol table 03. As for the value of the program identification information field, for example, field 104 may contain a program name corresponding to the symbol table. In the following explanation, the program name will be considered as the value of the program identification information field.

Using the program identifier 109 specified at the same time as the symbol 110 in the command to the debugger, program identification information fields in a plurality of symbol tables are searched to determine the program identification information field that matches the program identifier 109.

Next, search for a symbol field in the symbol table that includes the determined program identification information field, select the one that matches symbol 110 in the command, and set the value of the symbol attribute field corresponding to that symbol field. This is symbol attribute information.

With the above configuration and operation, it is possible to debug a plurality of programs using symbols that exist for each program.

Note that this example is just one example, and the present invention is applicable even if the method of searching the program identification information field using the program identifier as the key, the method of searching the symbol field using the symbol as the key, and the method of configuring each field are changed. can.

(Effects of the Invention) As explained above, the present invention has a function that can uniquely identify a program and can uniquely identify a symbol table for each program. It can also uniquely identify symbols, and is expected to improve debugging efficiency compared to conventional debuggers.

In addition, by simply keeping track of the program identifier, or program name, when program execution is interrupted (break) in the debugger, the debugger user can use the symbol of the program whose execution is currently interrupted without any operations required. .

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining one embodiment of the present invention. In the figure, 101... symbol table 1. 102...Symbol table 2. 103...Symbol table 3. 104...Program identification field of symbol table 1, 105...Program identification field of symbol table 2, 106...Program identification field of symbol table 3, 107...Symbol field of symbol table 1, 108... -Symbol attribute field of symbol table 1, 109...Program identifier, 110...Symbol, 111...Symbol attribute information Fig. 1

Claims (1)

[Claims] In a system that debugs multiple programs,
It has a symbol table that holds program identification information that uniquely identifies at least a plurality of programs, and also holds symbols defined in the programs that correspond to the program identification information and attribute information of the symbols. By specifying program identification information,
A symbol debugging method characterized by making it possible to refer to a symbol table for a specified program.