75d MIPS machines and the function stack Contents|Index|Previous|Next

MIPS machines and the function stack

MIPS based computers use an unusual stack frame, which sometimes requires GDB to search backward in the object code to find the beginning of a function.

To improve response time (especially for embedded applications, where GDB may be restricted to a slow serial line for this search) you may want to limit the size of this search, using one of these commands:

set heuristic-fence-post limit
Restrict GDB to examining at most limit bytes in its search for the beginning of a function.

A value of 0 (the default) means there is no limit. However, except for 0, the larger the limit the more bytes heuristic-fence-post must search and therefore the longer it takes to run.

show heuristic-fence-post
Display the current limit.

These commands are available only when GDB is configured for debugging programs on MIPS processors.

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