Returns the system heap parameters. The values returned are typically those used by the Angel C library during initialization. These values are defined in the devconf.h header file. Refer to Modifying target-specific files for a description of devconf.h.

The C library can override these values, but will do so only if __heap_base is defined at link time. In this case the values of the following symbols are used:

This call returns sensible answers if EmbeddedICE is being used, but the values are determined by the host debugger using the $top_of_memory debugger variable.