/arch/mips/sgi-ip27/ip27-irq-glue.S
Assembly | 45 lines | 40 code | 5 blank | 0 comment | 2 complexity | 00d699b9a40a6fb939fb2405b68f9d18 MD5 | raw file
1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1999 Ralf Baechle 7 * Copyright (C) 1999 Silicon Graphics, Inc. 8 */ 9#include <asm/asm.h> 10#include <asm/mipsregs.h> 11#include <asm/regdef.h> 12#include <asm/stackframe.h> 13 14 .text 15 .align 5 16NESTED(ip27_irq, PT_SIZE, sp) 17 SAVE_ALL 18 CLI 19 20 mfc0 s0, CP0_CAUSE 21 mfc0 t0, CP0_STATUS 22 and s0, t0 23 move a0, sp 24 PTR_LA ra, ret_from_irq 25 26 /* First check for RT interrupt. */ 27 andi t0, s0, CAUSEF_IP4 28 bnez t0, ip4 29 andi t0, s0, CAUSEF_IP2 30 bnez t0, ip2 31 andi t0, s0, CAUSEF_IP3 32 bnez t0, ip3 33 andi t0, s0, CAUSEF_IP5 34 bnez t0, ip5 35 andi t0, s0, CAUSEF_IP6 36 bnez t0, ip6 37 j ra 38 39ip2: j ip27_do_irq_mask0 # PI_INT_PEND_0 or CC_PEND_{A|B} 40ip3: j ip27_do_irq_mask1 # PI_INT_PEND_1 41ip4: j ip27_rt_timer_interrupt 42ip5: j ip27_prof_timer 43ip6: j ip27_hub_error 44 45 END(ip27_irq)