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/* We use the following Debug Monitor SWIs to write things out
* in this example
*/
extern __swi(0) WriteC(char c); /* Write a character */
extern __swi(2) Write0(char *s); /* Write a string */
/* The following symbols are defined by the linker and define
* various memory regions which may need to be copied or initialised
*/
extern char Image$$RO$$Limit[];
extern char Image$$RW$$Base[];
/* We define some more meaningfull names here */
#define rom_data_base Image$$RO$$Limit
#define ram_data_base Image$$RW$$Base
/* This is an example of a pre-initialised variable. */
static unsigned factory_id = 0xAA55AA55; /* Factory set ID */
/* This is an example of an uninitialised (or 0 initialised) variable */
static char display[8][40]; /* Screen buffer */
static const char hex[16] = "0123456789ABCDEF";
static void pr_hex(unsigned n)
{
int i;
for (i = 0; i < 8; i++) {
WriteC(hex[n >> 28]);
n <<= 4;
}
}
void C_Entry(void)
{
if (rom_data_base == ram_data_base) {
Write0("Warning: Image has been linked as an application. To link as a ROM image\r\n");
Write0(" link with the options -RO <rom-base> -RW <ram-base>\r\n");
}
Write0("'factory_id' is at address ");
pr_hex((unsigned)&factory_id);
Write0(", contents = ");
pr_hex((unsigned)factory_id);
Write0("\r\n");
Write0("'display' is at address ");
pr_hex((unsigned)display);
Write0("\r\n");
}
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