---  homec11067workC32buildspic32-microchip-release-1.12-20101221-rc2-20101221pic32-libslibcstubsdefault-general-exception-handler.c
9D00DD28  1000FFFF   beq         zero,zero,0x9d00dd28
9D00DD2C  00000000   nop

// declared static in case exception condition would prevent
// auto variable being created
static enum {
    EXCEP_IRQ = 0,          // interrupt
    EXCEP_AdEL = 4,         // address error exception (load or ifetch)
    EXCEP_AdES,             // address error exception (store)
    EXCEP_IBE,              // bus error (ifetch)
    EXCEP_DBE,              // bus error (load/store)
    EXCEP_Sys,              // syscall
    EXCEP_Bp,               // breakpoint
    EXCEP_RI,               // reserved instruction
    EXCEP_CpU,              // coprocessor unusable
    EXCEP_Overflow,         // arithmetic overflow
    EXCEP_Trap,             // trap (possible divide by zero)
    EXCEP_IS1 = 16,         // implementation specfic 1
    EXCEP_CEU,              // CorExtend Unuseable
    EXCEP_C2E               // coprocessor 2
} _excep_code;



static unsigned int _epc_code;
static unsigned int _excep_addr;

// this function overrides the normal _weak_ generic handler
void _general_exception_handler(void)
{
    asm volatile("mfc0 %0,$13" : "=r" (_excep_code));
    asm volatile("mfc0 %0,$14" : "=r" (_excep_addr));

    _excep_code = (_excep_code & 0x0000007C) >> 2;

    while (1) {
        // Examine _excep_code to identify the type of exception
        // Examine _excep_addr to find the address that caused the exception
    }
}