Imagecraft c compiler and development environment for the atmel avr

ICCV8 for AVR – C Compiler for Atmel AVRStack and Heap FunctionsBesides static program areas, the C runtime environment contains two additional dataregions: the stack area and the heap area. The stack is used for procedure calls, localand temporary variables, and parameter passing. The heap is used for dynamicallyallocated objects created by the standard C malloc(), calloc(), and realloc()calls. To use the heap functions, you must first initialize the heap region. See StandardLibrary And Memory Allocation Functions.There is no provision for stack overflow checking, so you must be careful not tooverrun your stack. For example, a series of recursive calls with a large amount oflocal variables would eat up the stack space quickly. When the stack runs into othervalid data, or if it runs past valid addresses, then Bad Things Can Happen (tm). Thestack grows downward toward the lower addresses. IIf you use #pragma text / data / lit / abs_address to assign your ownmemory areas, you must manually ensure that their addresses do not overlap theones used by the linker. As an attempt to overlap allocation may or may not cause thelinker to generate an error, you should always check the .mp map file. Use the IDEmenu selection (View->Map File) for potential problems.152