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- /*
- * 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 ... */
- jal spurious_interrupt
- nop
- j ret_from_irq
- 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
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