mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
76 lines
1.4 KiB
ArmAsm
76 lines
1.4 KiB
ArmAsm
/*
|
|
* 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
|