| /* |
| * Copyright (c) 2002 Philips, Inc. All rights. |
| * Copyright (c) 2002 Red Hat, Inc. All rights. |
| * |
| * This software may be freely redistributed under the terms of the |
| * GNU General Public License. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * Based upon arch/mips/galileo-boards/ev64240/int-handler.S |
| * |
| */ |
| #include <asm/asm.h> |
| #include <asm/mipsregs.h> |
| #include <asm/addrspace.h> |
| #include <asm/regdef.h> |
| #include <asm/stackframe.h> |
| |
| /* |
| * cp0_irqdispatch |
| * |
| * Code to handle in-core interrupt exception. |
| */ |
| |
| .align 5 |
| .set reorder |
| .set noat |
| NESTED(cp0_irqdispatch, PT_SIZE, sp) |
| SAVE_ALL |
| CLI |
| .set at |
| mfc0 t0,CP0_CAUSE |
| mfc0 t2,CP0_STATUS |
| |
| and t0,t2 |
| |
| andi t1,t0,STATUSF_IP2 /* int0 hardware line */ |
| bnez t1,ll_hw0_irq |
| nop |
| |
| andi t1,t0,STATUSF_IP7 /* int5 hardware line */ |
| bnez t1,ll_timer_irq |
| nop |
| |
| /* wrong alarm or masked ... */ |
| |
| j spurious_interrupt |
| nop |
| END(cp0_irqdispatch) |
| |
| .align 5 |
| .set reorder |
| ll_hw0_irq: |
| li a0,2 |
| move a1,sp |
| jal hw0_irqdispatch |
| nop |
| j ret_from_irq |
| nop |
| |
| .align 5 |
| .set reorder |
| ll_timer_irq: |
| mfc0 t3,CP0_CONFIG,7 |
| andi t4,t3,0x01c0 |
| beqz t4,ll_timer_out |
| nop |
| li a0,7 |
| move a1,sp |
| jal timer_irqdispatch |
| nop |
| |
| ll_timer_out: j ret_from_irq |
| nop |
