retarget.c

AT91RM9200-UC/OS-II,clock,irq,usart,pio等驱动

#include 	<rt_misc.h>

extern unsigned int bottom_of_heap; 

__value_in_regs struct __initial_stackheap __user_initial_stackheap(
        unsigned R0, unsigned SP, unsigned R2, unsigned SL)
{
    struct __initial_stackheap config;
    
    config.heap_base = (unsigned int)&bottom_of_heap; // defined in heap.s
                                                      // placed by scatterfile   
    config.stack_base = SP;   // inherit SP from the execution environment

    return config;
}