DSCOPE: DETECTING STACK OVERFLOW

QUESTION

How do I check to see if my program is overflowing the stack?

ANSWER

It is easy to use the dScope debugger to check if you program overflows the stack.

Set a memory access breakpoint at the end of the stack. When your program WRITES to this location (using the PUSH instruction or when a function is CALLed), dScope halts program execution on the line that overflows the stack.

The following dScope command:

BS WRITE BYTE(D:0x78)

sets a WRITE access breakpoint on the byte at data memory location 0x78. When anything writes to that location, dScope halts program execution.

SEE ALSO

• C51: MODIFYING THE STARTUP ROUTINES
• C51: SETTING PROGRAM START ADDRESS
• C51: AVOIDING STARTUP INITIALIZATION OF STATIC VARIABLES
• C51: CHECKING FOR STACK UNDERFLOW AT RUNTIME
• C51: STACK AND REENTRANT STACK SYMBOLIC NAMES
• C51: STACK POINTER INITIALIZATION IN STARTUP CODE
• C51: CALCULATING STACK SIZE
• C51: LOCATING THE STACK AFTER IDATA VARIABLES
• C51: STACK UTILIZATION

FORUM THREADS

The following Discussion Forum threads may provide information related to this topic.

• does KEIL compiler make out stack overflow?

Last Reviewed: Friday, November 16, 2001