nand-ecoscentric: packages/hal/mips/arch/current/src/vectors.S annotate

annotate packages/hal/mips/arch/current/src/vectors.S @ 66:bf00f99aec69 ecos-sw-2000-02-02

Merge from eCos master repository on 2000-02-02-19:16:44-GMT

author	jlarmour
date	Wed, 02 Feb 2000 19:57:02 +0000
parents	c38311975d4f
children	435cced73e2f

rev	line source
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3 ## vectors.S
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 ## MIPS exception vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	6 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	7 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	8 #####COPYRIGHTBEGIN####
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	9 #
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	10 # -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	11 # The contents of this file are subject to the Red Hat eCos Public License
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	12 # Version 1.1 (the "License"); you may not use this file except in
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	13 # compliance with the License. You may obtain a copy of the License at
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	14 # http://www.redhat.com/
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	15 #
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	16 # Software distributed under the License is distributed on an "AS IS"
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	18 # License for the specific language governing rights and limitations under
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	19 # the License.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	20 #
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	21 # The Original Code is eCos - Embedded Configurable Operating System,
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	22 # released September 30, 1998.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	23 #
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	24 # The Initial Developer of the Original Code is Red Hat.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	25 # Portions created by Red Hat are
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	26 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	27 # All Rights Reserved.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	28 # -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	29 #
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	30 #####COPYRIGHTEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	31 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	32 #######DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	33 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	34 ## Author(s): nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	35 ## Contributors: nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	36 ## Date: 1998-02-04
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	37 ## Purpose: MIPS exception vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	38 ## Description: This file defines the code placed into the exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	39 ## vectors. It also contains the first level default VSRs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	40 ## that save and restore state for both exceptions and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 ## interrupts.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	43 ######DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	44 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	45 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47 #include <pkgconf/system.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48 #include <pkgconf/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50 #ifdef CYGPKG_KERNEL
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51 # include <pkgconf/kernel.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	54 #include <cyg/hal/arch.inc>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	56 .extern cyg_instrument
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	57
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	58 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	59 ## Hardware supplied vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	61 .set noreorder
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	63 .section ".reset_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65 # Reset vector at 0xBFC00000
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	66
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	67 FUNC_START(reset_vector)
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	68
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	69 #ifndef CYG_HAL_STARTUP_RAM
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	70 # Decide whether this is an NMI, cold or warm boot.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	71
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	72 mfc0 k0,status # get status reg
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	73 lui k1,0x0008 # isolate NMI bit
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	74 and k1,k1,k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	75 beqz k1,1f # skip if zero
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	76 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	77
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	78 lar k1,__nmi_entry # jump to ROM nmi code
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	79 jalr k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	80 nop
52 7b011d1ab50f Merge from eCos master repository on 1999-11-05-17:34:28-GMT jlarmour parents: 50 diff changeset	81 1:
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	82 lui k1,0x0010 # isolate soft reset bit
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	83 and k1,k1,k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	84 beqz k1,2f # skip if zero
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	85 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	86
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	87 lar k1,__warm_start # jump to ROM warm_start code
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	88 jr k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	89 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	90 2:
52 7b011d1ab50f Merge from eCos master repository on 1999-11-05-17:34:28-GMT jlarmour parents: 50 diff changeset	91 la k0,INITIAL_CONFIG0 # Set up config0 register
7b011d1ab50f Merge from eCos master repository on 1999-11-05-17:34:28-GMT jlarmour parents: 50 diff changeset	92 mtc0 k0,config0 # to disable cache
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	93 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	94 lar v0,_start # jump to start
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	95 jr v0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 nop # (delay slot)
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	97
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	98 FUNC_END(reset_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	99
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100 .section ".debug_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102 # Debug vector at 0xBFC00200
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	104 FUNC_START(debug_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105 la k0,32
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 la k1,hal_vsr_table # Get VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	107 lw k1,32*4(k1) # load debug vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	110 FUNC_END(debug_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 .section ".other_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 # Common vector at 0x80000080 or 0xBFC00180
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	116 FUNC_START(other_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117 mfc0 k0,cause # K0 = exception cause
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119 andi k0,k0,0x7F # isolate exception code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120 la k1,hal_vsr_table # address of VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	121 add k1,k1,k0 # offset of VSR entry
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122 lw k1,0(k1) # k1 = pointer to VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	123 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124 nop # (delay slot)
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	125
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	126 FUNC_END(other_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	127
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128 .section ".utlb_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	130 FUNC_START(utlb_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 la k0,33
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 la k1,hal_vsr_table # Get VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 lw k1,33*4(k1) # load utlb vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	136 FUNC_END(utlb_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139 ## Startup code
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	140
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	142
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	143 FUNC_START(_start)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	144
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	145 # Initialize hardware
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	146 hal_cpu_init
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	147 hal_diag_init
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	148 hal_mmu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	149 hal_fpu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	150 hal_memc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	151 hal_intc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	152 hal_cache_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	153 hal_timer_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	154
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158 # load initial stack pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	159 la a0,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 move sp,a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	162 hal_mon_init
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 #ifdef CYG_HAL_STARTUP_ROM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165 # Copy data from ROM to RAM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	166
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167 .extern hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168 jal hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	170
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	171 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	172
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173 # Zero BSS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	175 .extern hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	176 jal hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	177 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	178
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	179 # Call variant and platform HAL
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	180 # initialization routines.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	181
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	182 .extern hal_variant_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	183 jal hal_variant_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	184 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	185
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	186 .extern hal_platform_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	187 jal hal_platform_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	188 nop
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	189
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	190 # Call constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	191 .extern cyg_hal_invoke_constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	192 jal cyg_hal_invoke_constructors
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	193 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	194
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	195 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	196 .extern initialize_stub
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	197 jal initialize_stub
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198 nop
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	199 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201 # Call cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	203 .extern cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204 jal cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	206
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	207 9: b 9b # Loop if we return
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	208 nop # (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	209
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	210 FUNC_END(_start )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	211
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	212
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	213 ##-----------------------------------------------------------------------------
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	214
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	215 FUNC_START(__warm_start)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	216
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	217 ## The following is debug code left in here for now in case it
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	218 ## proves useful in the near future.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	219 #if 0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	220 move s0,t0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	221 move s1,a1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	222
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	223 # hal_diag_init
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	224
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	225 hal_diag_writec '$'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	226 mfc0 a0,$30 # get ErrorEPC
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	227 lar k0,hal_diag_ai_write_hex8
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	228 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	229 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	230 hal_diag_writec '-'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	231 move a0,s0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	232 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	233 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	234 hal_diag_writec '-'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	235 move a0,s1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	236 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	237 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	238 1:
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	239 b 1b
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	240 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	241 #endif
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	242
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	243 # At present we treat this like an NMI.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	244 b __nmi_entry
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	245 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	246
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	247 FUNC_END(__warm_start)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	248
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	249 ##-----------------------------------------------------------------------------
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	250
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	251 FUNC_START(__nmi_entry)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	252
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	253 # Clear exception state
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	254 hal_cpu_except_enable
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	255
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	256 # Move the ErrorEPC register to the EPC register so that the
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	257 # default exception handler saves the right PC value.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	258 mfc0 k0,$30
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	259 nop; nop; nop;
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	260 mtc0 k0,epc
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	261 nop; nop; nop;
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	262
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	263 #if (INITIAL_SR & 0x00400000) == 0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	264 # Taking this exception will have set the BEV bit to 1.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	265 # If we normally run with it zero, we must clear it here.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	266 mfc0 k0,status
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	267 la k1,0xFFBFFFFF
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	268 and k0,k0,k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	269 mtc0 k0,status
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	270 #endif
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	271
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	272 la k0,34*4
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	273 la k1,hal_vsr_table # Get VSR table
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	274 lw k1,34*4(k1) # load NMI vector
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	275 jr k1 # go there
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	276 nop # (delay slot)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	277
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	278 FUNC_END(__nmi_entry)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	279
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	280
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	281 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	282 ## Default exception VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	283 ## Saves machine state and calls external handling code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	284
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	285 FUNC_START(__default_exception_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	286
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	287 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	288 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	289 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	290 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	291
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	292 move k1,sp # K1 = original SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	293
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	294 #ifdef CYGSEM_HAL_ROM_MONITOR
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	295 # Switch to interrupt stack to handle exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	296 la sp,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	297 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	298
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	299 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	300 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	301
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	302 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	303
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	304 # store GPRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	306 sgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	307 sgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	308 sgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	309 sgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	310 sgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	311 sgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	312 sgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	313 sgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	314 sgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	315 sgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	316 sgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	317 sgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	318 sgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	319 sgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	320 sgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	321 sgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	322 sgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	323 sgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	324 sgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	325 sgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	326 sgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	327 sgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	328 sgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	329 sgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	330 sgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	331 sgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	332 # sgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	333 # sgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	334 sgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	335 # sgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	336 sgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	337 sgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	338 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	339
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	340 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	341 mflo a1
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	342 shi a0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	343 slo a1,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	344
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	345 # K1 contains original SP
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	346 ssp k1,sp # store in reg dump
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	347
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	348 # save remaining machine state registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	349 mfc0 t0,cause
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	350 mfc0 t1,status
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	351 mfc0 t2,cachectrl
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	352 mfc0 t3,badvr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	353 mfc0 t4,config
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	354 mfc0 t5,prid
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	355 mfc0 t6,epc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	356
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	357 sw t0,mipsreg_cause(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	358 sw t1,mipsreg_sr(sp)
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	359 sw t2,mipsreg_cachectrl(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	360 sw t3,mipsreg_badvr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	361 sw t4,mipsreg_config(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	362 sw t5,mipsreg_prid(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	363 sw t6,mipsreg_pc(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	364
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	365 hal_fpu_save sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	366
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	367 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	368
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	369 hal_diag_excpt_start
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	370
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	371 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	372 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	373
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	374 move s0,sp # save pointer to saved state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	375
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	376 addi sp,sp,-mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	377
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	378 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	379
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	380 la ra,restore_state # load return address
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	381
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	382 hal_cpu_except_enable # reenable exceptions
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	383
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	384 .extern cyg_hal_exception_handler
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	385 j cyg_hal_exception_handler # call C code
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	386 move a0,s0 # arg0 = register dump (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	387
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	388 # When the exception handler returns, it will
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	389 # go back to restore_state, below.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	390
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	391 FUNC_END(__default_exception_vsr)
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	392
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	393 ##------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	394 ## Default interrupt VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	395 ## Saves machine state and calls appropriate ISR. When done, calls
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	396 ## interrupt_end() to finish up and possibly reschedule.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	397
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	398 FUNC_START(__default_interrupt_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	399
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	400
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	401 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	402 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	403 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	404 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	405
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	406 move k1,sp # K1 = original SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	407
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	408 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	409 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	410
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	411 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	412
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	413 # store GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	414 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	415 sgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	416 sgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	417 sgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	418 sgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	419 sgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	420 sgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	421 sgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	422 sgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	423 sgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	424 sgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	425 sgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	426 sgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	427 sgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	428 sgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	429 sgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	430 sgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	431 sgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	432 sgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	433 sgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	434 sgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	435 sgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	436 sgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	437 sgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	438 sgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	439 sgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	440 sgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	441 # sgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	442 # sgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	443 sgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	444 # sgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	445 sgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	446 sgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	447 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	448
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	449 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	450 mflo a1
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	451 shi a0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	452 slo a1,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	453
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	454 # K1 contains original SP
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	455 ssp k1,sp # store in reg dump
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	456
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	457 mfc0 t1,status
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	458 mfc0 t2,cachectrl
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	459 mfc0 t3,epc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	460
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	461 sw t1,mipsreg_sr(sp)
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	462 sw t2,mipsreg_cachectrl(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	463 sw t3,mipsreg_pc(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	464
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	465 hal_fpu_save sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	466
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	467 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	468
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	469 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	470 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	471
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	472 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	473 .extern cyg_scheduler_sched_lock
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	474 la v0,cyg_scheduler_sched_lock
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	475 lw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	476 addi a0,a0,1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	477 sw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	478 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	479
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	480 move s0,sp # save pointer to saved state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	481
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	482 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	483
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	484 la a0,__interrupt_stack # a0 = stack top
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	485 la a1,__interrupt_stack_base # a1 = stack base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	486 sub a3,sp,a1 # a3 = sp - base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	487 bltz a3,1f # if < 0 - not on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	488 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	489 sub t0,a0,sp # t0 = top - sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	490 bgtz t0,8f # if > 0 - already on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	491 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	492 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	493 move sp,a0 # switch to istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	494 8:
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 48 diff changeset	495 addi sp,sp,-8 # space for old SP
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 48 diff changeset	496 # (8 to keep dword alignment!)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	497 sw s0,0(sp) # save old SP on stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	498
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	499 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	500
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	501 subu sp,sp,mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	502
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	503 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	504
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	505 # Decode external interrupt via interrupt controller
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	506
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	507 hal_intc_decode s2
48 1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	508
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	509 # Here, s2 contains the number of the interrupt being serviced,
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	510 # we need to derive from that the vector number to call in the ISR
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	511 # table.
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	512
48 1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	513 hal_intc_translate s2,s1
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	514
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	515 # Here s1 is the number of the vector to be called and s2 is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	516 # the number of the interrupt being serviced.
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	517
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	518 hal_diag_intr_start
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	519
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	520 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	521
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	522 # Call cyg_instrument to record that this interrupt is being raised.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	523
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	524 li a0,0x0301 # a0 = type = INTR,RAISE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	525 move a1,s1 # a1 = vector number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	526 jal cyg_instrument # call instrument function
48 1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	527 move a2,s2 # a2 = interrupt number
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	528 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	529
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 48 diff changeset	530 #if defined(CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT)
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	531 # If we are supporting Ctrl-C interrupts from GDB, we must squirrel
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	532 # away a pointer to the save interrupt state here so that we can
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	533 # plant a breakpoint at some later time.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	534
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	535 .extern hal_saved_interrupt_state
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	536 la v0,hal_saved_interrupt_state
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	537 sw s0,0(v0)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	538
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	539 #endif
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	540
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	541 sll s1,s1,2 # s1 = byte offset of vector
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	542
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	543 hal_cpu_except_enable # reenable exceptions
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	544
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	545 la t2,hal_interrupt_handlers # handler table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	546 add t2,t2,s1 # address of ISR ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	547 lw t2,0(t2) # ISR pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	548
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	549 la a1,hal_interrupt_data # data table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	550 add a1,a1,s1 # address of data ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	551 lw a1,0(a1) # Data pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	552
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	553 move a0,s2 # pass interrupt number
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	554
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	555 jalr t2 # call ISR via t2
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	556 nop # (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	557
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	558 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	559
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	560 # If we are returning from the last nested interrupt, move back
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	561 # to the thread stack. interrupt_end() must be called on the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	562 # thread stack since it potentially causes a context switch.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	563 # Since we have arranged for the top of stack location to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	564 # contain the sp we need to go back to here, just pop it off
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	565 # and put it in SP.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	566
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	567
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	568 lw sp,mips_stack_frame_size(sp) # sp = *sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	569 subu sp,sp,mips_stack_frame_size # make a null frame
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	570 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	571
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	572 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	573
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	574 # We only need to call _interrupt_end() when there is a kernel
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	575 # present to do any tidying up.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	576
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	577 # On return v0 bit 1 will indicate whether a DSR is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	578 # to be posted. Pass this together with a pointer to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	579 # the interrupt object we have just used to the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	580 # interrupt tidy up routine.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	581
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	582 # Note that s0, s1 and s2 are defined to be preserved across
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	583 # calls by the calling convention, so they still contain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	584 # the register dump, the vector offset and the interrupt number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	585 # respectively.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	586
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	587 move s2,v0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	588
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	589 la a1,hal_interrupt_objects # interrupt object table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	590 add a1,a1,s1 # address of object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	591 lw a1,0(a1) # a1 = object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	592
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	593 move a2,s0 # arg3 = saved register dump
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	594
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	595 .extern interrupt_end
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	596 jal interrupt_end # call into C to finish off
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	597 move a0,v0 # put ISR result in arg0
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	598
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	599 move v0,s2 # return value from isr
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	600 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	601
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	602 restore_state:
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	603 move k0,v0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	604
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	605 # All done, restore CPU state and continue
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	606
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	607 addi sp,sp,mips_stack_frame_size # retrieve CPU state ptr
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	608
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	609 # Disable interrupts again while we restore state.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	610
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	611 hal_diag_restore
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	612
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	613 hal_fpu_load sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	614
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	615 lw t0,mipsreg_cachectrl(sp)
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	616 lhi t1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	617 llo t2,sp
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	618
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	619 mtc0 t0,cachectrl
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	620 mthi t1
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	621 mtlo t2
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	622
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	623 # load GPRs
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	624 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	625 # lgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	626 lgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	627 lgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	628 lgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	629 lgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	630 lgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	631 lgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	632 lgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	633 lgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	634 lgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	635 lgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	636 lgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	637 lgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	638 lgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	639 lgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	640 lgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	641 lgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	642 lgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	643 lgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	644 lgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	645 lgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	646 lgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	647 lgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	648 lgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	649 lgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	650 lgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	651 # lgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	652 # lgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	653 lgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	654 # lgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	655 lgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	656 lgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	657 .set at
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	658
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	659
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	660 #if defined(CYGSEM_HAL_USE_ROM_MONITOR_CygMon)
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	661
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	662 # If we have a Cygmon that wants to listen to network interrupts, then
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	663 # the return code from the earlier call to hal_default_isr() will
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	664 # have been negative to indicate this. So we jump into Cygmon here
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	665 # because Cygmon requires the processor state to be the same as when
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	666 # the interrupt was taken, but with k0 as the exception number.
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	667
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	668 bgez k0,1f
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	669 nop
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	670 # Check for new cygmon
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	671 sw k0,(mipsreg_regs+26*4)(sp) # save k0
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	672 la k1,0x80000100 + 41*4 # New cygmon "magic" id
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	673 lw k1,0(k1)
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	674 lui k0,0x55aa
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	675 ori k0,0x4321
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	676 bne k0,k1,1f
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	677
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	678 # Need to let cygmon handle this
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	679 la k1,0x80000100 + 39*4 # stub entry vector
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	680 lw k0,(mipsreg_regs+26*4)(sp) # restore k0
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	681 lw k1,0(k1)
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	682 lw sp,(mipsreg_regs+29*4)(sp) # restore SP
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	683 sll k0,1 # clear bit 31.
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	684 jr k1
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	685 srl k0,1
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	686 1:
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	687 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	688 lw k0,mipsreg_pc(sp) # K0 = return PC
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	689 lw k1,mipsreg_sr(sp) # K1 = saved SR
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	690 lsp sp,sp # load SP
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	691
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	692 # Invoke CPU specific mechanism for returning from this
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	693 # exception
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	694
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	695 hal_cpu_eret k0,k1
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	696
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	697 FUNC_END(__default_interrupt_vsr)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	698
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	699 hal_intc_decode_data
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	700
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	701 ##-----------------------------------------------------------------------------
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	702 ## Execute pending DSRs on the interrupt stack with interrupts enabled.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	703 ## Note: this can only be called from code running on a thread stack
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	704
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	705 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	706 .extern cyg_interrupt_call_pending_DSRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	707
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	708 FUNC_START(hal_interrupt_stack_call_pending_DSRs)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	709 mfc0 t0,status # get status register value
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	710 la v0,__interrupt_stack # v0 = interrupt stack
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	711 move v1,sp # v1 = original stack ptr
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	712 move sp,v0 # sp = interrupt stack
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	713 addi sp,sp,-32 # make a null frame
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	714 sw v1,16(sp) # save old sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	715 sw ra,20(sp) # save old ra
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	716 sw t0,24(sp) # save old sr
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	717
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	718 hal_cpu_int_enable
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	719
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	720 jal cyg_interrupt_call_pending_DSRs # call back to kernel
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	721 nop
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	722
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	723 lw a0,24(sp) # get status reg
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	724
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	725 hal_cpu_int_merge a0 # merge with current SR
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	726
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	727 lw ra,20(sp) # restore ra
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	728 lw sp,16(sp) # restore sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	729
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	730 jr ra # go back
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	731 nop # delay slot
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	732
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	733 FUNC_END(hal_interrupt_stack_call_pending_DSRs)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	734 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	735
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	736 ##-----------------------------------------------------------------------------
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	737 ## Short circuit in case any code tries to use "__gccmain()"
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	738
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	739 FUNC_START(__gccmain)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	740 jr ra
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	741 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	742 FUNC_END(__gccmain)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	743
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	744 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	745 ## Interrupt Stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	746 ## Used during intialization and for executing ISRs.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	747
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	748 .bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	749
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	750 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	751 .global cyg_interrupt_stack_base
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	752 cyg_interrupt_stack_base:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	753 __interrupt_stack_base:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	754 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	755 .byte 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	756 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	757 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	758 .global cyg_interrupt_stack
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	759 cyg_interrupt_stack:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	760 __interrupt_stack:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	761
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	762 .long 0,0,0,0,0,0,0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	763
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	764 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	765 ## VSR table.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	766 ## The main interrupt code indirects through here to find the VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	767 ## to execute for each architecture defined interrupt.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	768 ## This is only used for simulated targets, on real targets a fixed location VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	769 ## table is now allocated at 0x80000100.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	770
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	771 #ifndef CYG_HAL_MIPS_VSR_TABLE_DEFINED
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	772
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	773 ## .section ".vsr_table","a"
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	774
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	775 .data
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	776
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	777 .globl hal_vsr_table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	778
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	779 hal_vsr_table:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	780 .long __default_interrupt_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	781 .rept 63
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	782 .long __default_exception_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	783 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	784
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	785 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	786
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	787 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	788 # Interrupt vector tables.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	789 # These tables contain the isr, data and object pointers used to deliver
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	790 # interrupts to user code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	791 # hal_interrupt_level contains the interrupt level set by
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	792 # HAL_INTERRUPT_CONFIGURE().
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	793 # This is a default set that provide support only for the 6 external
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	794 # interrupts in the status/cause registers. Platforms or boards are expected
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	795 # to define their own versions of these if they have their own interrupt mappings.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	796
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	797 #ifndef CYG_HAL_MIPS_ISR_TABLES_DEFINED
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	798
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	799 .extern hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	800
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	801 .data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	802
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	803 .globl hal_interrupt_handlers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	804 hal_interrupt_handlers:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	805 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	806 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	807 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	808 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	809 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	810 .long hal_default_isr
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	811
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	812
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	813 .globl hal_interrupt_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	814 hal_interrupt_data:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	815 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	816 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	817 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	818
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	819 .globl hal_interrupt_objects
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	820 hal_interrupt_objects:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	821 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	822 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	823 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	824
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	825 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	826
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	827 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	828 ## end of vectors.S
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	829
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	830

Mercurial > nand-ecoscentric

annotate packages/hal/mips/arch/current/src/vectors.S @ 66:bf00f99aec69 ecos-sw-2000-02-02