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Bootloader for RM48L952

Pablo Cottens
Genius 3020 points

Hello,

I am writing a bootloader and I have a problem. When it comes to programming the following step: "Initialize copy table, global variables, and constructors". I copied and pasted the following code, which is in the start up code I found in a development kit, but it isn't working. Do I have to use these variables somewhere else or is the compiler responsible for using them? PS: I'm using CCS 5.3

#pragma WEAK(__TI_Handler_Table_Base)
#pragma WEAK(__TI_Handler_Table_Limit)
#pragma WEAK(__TI_CINIT_Base)
#pragma WEAK(__TI_CINIT_Limit)

extern unsigned int   __TI_Handler_Table_Base;
extern unsigned int   __TI_Handler_Table_Limit;
extern unsigned int   __TI_CINIT_Base;
extern unsigned int   __TI_CINIT_Limit;
extern unsigned int   __TI_PINIT_Base;
extern unsigned int   __TI_PINIT_Limit;
extern unsigned int * __binit__;



    /* initalise copy table */
    	if ((unsigned int *)&__binit__ != (unsigned int *)0xFFFFFFFFU)
    	{
    		extern void copy_in(void *binit);
    		copy_in((void *)&__binit__);
    	}

    	/* initalise the C global variables */
    	if (&__TI_Handler_Table_Base < &__TI_Handler_Table_Limit)
    	{
    		unsigned char **tablePtr   = (unsigned char **)&__TI_CINIT_Base;
    		unsigned char **tableLimit = (unsigned char **)&__TI_CINIT_Limit;

    		while (tablePtr < tableLimit)
    		{
    			unsigned char *loadAdr = *tablePtr++;
    			unsigned char *runAdr  = *tablePtr++;
    			unsigned char  idx     = *loadAdr++;
    			handler_fptr   handler = (handler_fptr)(&__TI_Handler_Table_Base)[idx];

    			(*handler)((const unsigned char *)loadAdr, runAdr);
    		}
    	}

    	/* initalise contructors */
    	if (__TI_PINIT_Base < __TI_PINIT_Limit)
    	{
    		void (**p0)() = (void *)__TI_PINIT_Base;

    		while ((unsigned int)p0 < __TI_PINIT_Limit) {
    			void (*p)() = *p0++;
    			p();
    		}
    	}