STEP EXECUTION SYSTEM FOR HIGH-LEVEL LANGUAGE PROGRAM

摘要

PURPOSE:To improve the efficiency of debugging by analyzing the statement structure of a high-level language program and storing start positions of statements, etc., and controlling the execution and stop of the program while regarding the start positions as break points. CONSTITUTION:A CPU analyzes the statement structure of the source program in high-level language which is stored in a memory, and store its compiled machine word program in the memory and also generates a statement number table 20 and a statement structure table 30 in the memory. When a command for step execution up to right before a statement in the statement at a stop position is supplied while the program is stopped, a stop position statement number (i) in the source program is checked on the basis of the value of a program counter and the statement number table to take the statement number (j) of the statement in the statement corresponding to the statement number (i) out of the statement structure table 30. The program is executed until the start address of the machine word program which has the statement number (j), then stopped, and debugging result information is displayed on a display device.