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