Subversion Repositories openrisc_2011-10-31

#include "../../../Source/portable/GCC/OpenRISC/portmacro.h"

#include "spr_defs.h"

// Dummy or32 except vectors

void buserr_except(void) {

        uart_print_str("buserr_except\n\r");

        while(1) ;

}

void dpf_except(void) {

        uart_print_str("dpf_except\n\r");

        while(1) ;

}

void ipf_except(void) {

        uart_print_str("ipf_except\n\r");

        while(1) ;

}

void align_except(void) {

        uart_print_str("align_except\n\r");

        while(1) ;

}

void illegal_except(void) {

        uart_print_str("illegal_except\n\r");

        while(1) ;

}

void dtlbmiss_except(void) {

        uart_print_str("dtlbmiss_except\n\r");

        while(1) ;

}

void itlbmiss_except(void) {

        uart_print_str("itlbmiss_except\n\r");

        while(1) ;

}

void range_except(void) {

        uart_print_str("range_except\n\r");

        while(1) ;

}

static void syscall_enter_critical(void) {

        unsigned int exception_sr = mfspr(SPR_ESR_BASE);

        exception_sr &= (~SPR_SR_IEE);          // disable all external interrupt

        exception_sr &= (~SPR_SR_TEE);          // disable tick timer interrupt

        mtspr(SPR_ESR_BASE, exception_sr);

}

static void syscall_exit_critical(void) {

        unsigned int exception_sr = mfspr(SPR_ESR_BASE);

        exception_sr |= SPR_SR_IEE;             // enable all external interrupt

        exception_sr |= SPR_SR_TEE;             // enable tick timer interrupt

        mtspr(SPR_ESR_BASE, exception_sr);

}

void syscall_except(int id) {

        if(id == 0x0FCE) {

                syscall_enter_critical();

        } else if(id == 0x0FCF) {

                syscall_exit_critical();

        } else {

                uart_put_int(id);

                uart_print_str(" syscall is not impelmented yet....\n\r");

        }

}

void res1_except(void) {

        uart_print_str("res1_except\n\r");

        while(1) ;

}

void trap_except(void) {

        uart_print_str("trap_except\n\r");

        while(1) ;

}

void res2_except(void) {

        uart_print_str("res2_except\n\r");

        while(1) ;

}