TASKING VX-toolset for ARM User Guide

Linker Script Language (LSL)group (priority=2){select "importantcode1";select "importantcode2";}16.8.3. Creating or Modifying Special SectionsInstead of selecting sections, you can also create a reserved section or an output section or modify specialsections like a stack or a heap. Because you cannot define these sections in the input files, you must usethe linker to create them.Stack• The keyword stack tells the linker to reserve memory for the stack. The name for the stack sectionrefers to the stack as defined in the architecture definition. If no name was specified in the architecturedefinition, the default name is stack.With the keyword size you can specify the size for the stack. If the size is not specified, the linker usesthe size given by the min_size argument as defined for the stack in the architecture definition. Normallythe linker automatically tries to maximize the size, unless you specified the keyword fixed.group ( ... ){stack "mystack" ( size = 2k );}The linker creates two labels to mark the begin and end of the stack, _lc_ub_stack_name for thebegin of the stack and _lc_ue_stack_name for the end of the stack. The linker allocates space forthe stack when there is a reference to either of the labels.See also the stack keyword in Section 16.4.3, Defining Address Spaces.Heap• The keyword heap tells the linker to reserve a dynamic memory range for the malloc() function.Each heap section has a name. With the keyword size you can change the size for the heap. If thesize is not specified, the linker uses the size given by the min_size argument as defined for the heapin the architecture definition. Normally the linker automatically tries to maximize the size, unless youspecified the keyword fixed.group ( ... ){heap "myheap" ( size = 2k );}The linker creates two labels to mark the begin and end of the heap, _lc_ub_heap_name for the beginof the heap and _lc_ue_heap_name for the end of the heap. The linker allocates space for the heapwhen a reference to either of the section labels exists in one of the input object files.841