ecos: packages/hal/mips/arch/current/src/vectors.S annotate

annotate packages/hal/mips/arch/current/src/vectors.S @ 154:e2d866e32dac

Merge from eCos master repository on 2001-02-26-23:18:05-GMT

author	jlarmour
date	Tue, 27 Feb 2001 01:21:45 +0000
parents	25e238959bae
children	70a4cc6d69d2

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
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	35 ## Contributors: nickg, dmoseley
0 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>
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	55 #include <cyg/hal/hal_arch.h>
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	56
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	57 #ifdef at
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	58 #undef at
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	59 #endif
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	60 .extern cyg_instrument
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	61
0 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 ## Hardware supplied vectors
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 .set noreorder
92 08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	66
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	67 .section ".reset_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	68
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	69 # Reset vector at 0xBFC00000
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	70
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	71 FUNC_START(reset_vector)
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	72
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	73 #ifndef CYG_HAL_STARTUP_RAM
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	74 # if defined(CYGPKG_HAL_RESET_VECTOR_FIRST_CODE)
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	75 hal_reset_vector_first_code
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	76 # endif
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	77 # if defined(CYGPKG_HAL_EARLY_INIT)
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	78 hal_early_init
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	79 # endif
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	80 # 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	81
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	82 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	83 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	84 and k1,k1,k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	85 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	86 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	87
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	88 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	89 jalr k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	90 nop
52 7b011d1ab50f Merge from eCos master repository on 1999-11-05-17:34:28-GMT jlarmour parents: 50 diff changeset	91 1:
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	92 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	93 and k1,k1,k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	94 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	95 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	96
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	97 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	98 jr k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	99 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	100 2:
52 7b011d1ab50f Merge from eCos master repository on 1999-11-05-17:34:28-GMT jlarmour parents: 50 diff changeset	101 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	102 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	103 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	104 lar v0,_start # jump to start
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 112 diff changeset	105 #ifdef CYGARC_START_FUNC_UNCACHED
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 92 diff changeset	106 CYGARC_ADDRESS_REG_UNCACHED(v0)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 112 diff changeset	107 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 112 diff changeset	108
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109 jr v0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110 nop # (delay slot)
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	111
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	112 FUNC_END(reset_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	113
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 .section ".debug_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116 # Debug vector at 0xBFC00200
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	118 FUNC_START(debug_vector)
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: 115 diff changeset	119 la k0,32*4
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120 la k1,hal_vsr_table # Get VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	121 lw k1,32*4(k1) # load debug vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	123 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	124 FUNC_END(debug_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	125
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	126 .section ".other_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128 # Common vector at 0x80000080 or 0xBFC00180
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(other_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 mfc0 k0,cause # K0 = exception cause
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 andi k0,k0,0x7F # isolate exception code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 la k1,hal_vsr_table # address of VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 add k1,k1,k0 # offset of VSR entry
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	136 lw k1,0(k1) # k1 = pointer to VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	139 FUNC_END(other_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	140
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 .section ".utlb_vector","ax"
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(utlb_vector)
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: 115 diff changeset	144 mfc0 k0,cause # K0 = exception cause
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: 115 diff changeset	145 nop
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: 115 diff changeset	146 andi k0,k0,0x7F # isolate exception code
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: 115 diff changeset	147 la k1,hal_vsr_table # address of VSR table
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: 115 diff changeset	148 add k1,k1,k0 # offset of VSR entry
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: 115 diff changeset	149 lw k1,0(k1) # k1 = pointer to VSR
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	151 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	152 FUNC_END(utlb_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	154 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155 ## Startup code
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	156
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	159 FUNC_START(_start)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161 # Initialize hardware
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	162 hal_cpu_init
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	163 hal_diag_init
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	164 hal_mmu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	165 hal_fpu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	166 hal_memc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	167 hal_intc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	168 hal_cache_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	169 hal_timer_init
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 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	172 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174 # load initial stack pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	175 la a0,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	176 move sp,a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	177
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	178 hal_mon_init
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	179
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	180 #ifdef CYG_HAL_STARTUP_ROM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	181 # Copy data from ROM to RAM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	182
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	183 .extern hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	184 jal hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	185 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	186
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	187 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	188
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	189 # Zero BSS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	190
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	191 .extern hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	192 jal hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	193 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	195 # 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	196 # initialization routines.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	197
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	198 .extern hal_variant_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	199 jal hal_variant_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	200 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	201
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	202 .extern hal_platform_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	203 jal hal_platform_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	204 nop
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	205
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	206 # Call constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	207 .extern cyg_hal_invoke_constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	208 jal cyg_hal_invoke_constructors
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	209 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	210
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	211 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	212 .extern initialize_stub
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	213 jal initialize_stub
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	214 nop
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	215 #endif
92 08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	216 #if defined(CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT)
08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	217 .extern hal_ctrlc_isr_init
08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	218 jal hal_ctrlc_isr_init
08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	219 nop
08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	220 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	221
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	222 # Call cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	223
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	224 .extern cyg_start
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	225 j cyg_start
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	226 lui ra,0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	227
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	228 FUNC_END(_start )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	229
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	230
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	231 ##-----------------------------------------------------------------------------
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	232
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	233 FUNC_START(__warm_start)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	234
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	235 ## 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	236 ## 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	237 #if 0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	238 move s0,t0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	239 move s1,a1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	240
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	241 # hal_diag_init
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 hal_diag_writec '$'
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	244 mvafc0 a0,$30 # get ErrorEPC
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	245 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	246 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	247 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	248 hal_diag_writec '-'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	249 move a0,s0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	250 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	251 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	252 hal_diag_writec '-'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	253 move a0,s1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	254 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	255 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	256 1:
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	257 b 1b
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	258 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	259 #endif
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	260
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	261 # Treat a warm-start either as a cold-start or an NMI
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	262 #if defined(CYGHWR_HAL_MIPS_WARMSTART_COLDSTART)
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	263 lar v0,_start # jump to start
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	264 jr v0
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	265 nop # (delay slot)
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	266 #else
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	267 # Defaults to NMI
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	268 b __nmi_entry
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	269 nop
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	270 #endif
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	271
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	272 FUNC_END(__warm_start)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	273
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	274 ##-----------------------------------------------------------------------------
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	275
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	276 FUNC_START(__nmi_entry)
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 # Clear exception state
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	279 hal_cpu_except_enable
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	280
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	281 # 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	282 # default exception handler saves the right PC value.
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	283 mvafc0 k0,$30
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	284 nop; nop; nop;
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	285 mvatc0 k0,epc
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	286 nop; nop; nop;
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	287
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	288 #if (INITIAL_SR & 0x00400000) == 0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	289 # 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	290 # 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	291 mfc0 k0,status
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	292 la k1,0xFFBFFFFF
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	293 and k0,k0,k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	294 mtc0 k0,status
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	295 #endif
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	296
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	297 la k0,34*4
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	298 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	299 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	300 jr k1 # go there
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	301 nop # (delay slot)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	302
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	303 FUNC_END(__nmi_entry)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	304
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	306 ## Default exception VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	307 ## Saves machine state and calls external handling code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	308
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	309 FUNC_START(__default_exception_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	310
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	311 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	312 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	313 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	314 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	315
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	316 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	317
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	318 #ifdef CYGSEM_HAL_ROM_MONITOR
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	319 # Switch to interrupt stack to handle exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	320 la sp,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	322
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	323 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	324 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	326 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	328 # store GPRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	329 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	330 sgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	331 sgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	332 sgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	333 sgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	334 sgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	335 sgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	336 sgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	337 sgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	338 sgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	339 sgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	340 sgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	341 sgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	342 sgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	343 sgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	344 sgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	345 sgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	346 sgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	347 sgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	348 sgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	349 sgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	350 sgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	351 sgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	352 sgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	353 sgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	354 sgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	355 sgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	356 # sgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	357 # sgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	358 sgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	359 # sgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	360 sgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	361 sgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	362 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	363
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	364 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	365 mflo a1
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	366 shi a0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	367 slo a1,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	368
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	369 # K1 contains original SP
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	370 ssp k1,sp # store in reg dump
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	371
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	372 # save remaining machine state registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	373 mfc0 t0,cause
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	374 mfc0 t1,status
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	375 mfc0 t2,cachectrl
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	376 mvafc0 t3,badvr
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	377 mfc0 t4,config
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	378 mfc0 t5,prid
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	379 mvafc0 t6,epc
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	380
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	381 sw t0,mipsreg_cause(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	382 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	383 sw t2,mipsreg_cachectrl(sp)
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	384 sva t3,mipsreg_badvr(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	385 sw t4,mipsreg_config(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	386 sw t5,mipsreg_prid(sp)
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	387 sva t6,mipsreg_pc(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	388
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	389 hal_fpu_save sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	390
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	391 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	392
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	393 hal_diag_excpt_start
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	394
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	395 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	396 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	397
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	398 move s0,sp # save pointer to saved state
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 addi sp,sp,-mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	401
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	402 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	403
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	404 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	405
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	406 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	407
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	408 .extern cyg_hal_exception_handler
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	409 j cyg_hal_exception_handler # call C code
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	410 move a0,s0 # arg0 = register dump (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	411
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	412 # When the exception handler returns, it will
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	413 # go back to restore_state, below.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	414
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	415 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	416
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	417 ##------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	418 ## Default interrupt VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	419 ## Saves machine state and calls appropriate ISR. When done, calls
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	420 ## interrupt_end() to finish up and possibly reschedule.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	421
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	422 FUNC_START(__default_interrupt_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	423
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	424
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	425 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	426 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	427 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	428 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	429
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	430 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	431
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	432 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	433 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	434
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	435 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	436
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	437 # store GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	438 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	439 sgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	440 sgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	441 sgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	442 sgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	443 sgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	444 sgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	445 sgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	446 sgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	447 sgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	448 sgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	449 sgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	450 sgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	451 sgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	452 sgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	453 sgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	454 sgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	455 sgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	456 sgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	457 sgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	458 sgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	459 sgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	460 sgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	461 sgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	462 sgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	463 sgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	464 sgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	465 # sgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	466 # sgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	467 sgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	468 # sgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	469 sgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	470 sgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	471 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	472
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	473 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	474 mflo a1
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	475 shi a0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	476 slo a1,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	477
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	478 # K1 contains original SP
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	479 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	480
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	481 mfc0 t1,status
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	482 mfc0 t2,cachectrl
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	483 mvafc0 t3,epc
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	484
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	485 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	486 sw t2,mipsreg_cachectrl(sp)
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	487 sva t3,mipsreg_pc(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	488
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	489 hal_fpu_save sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	490
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	491 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	492
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	493 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	494 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	495
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	496 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	497 .extern cyg_scheduler_sched_lock
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	498 la v0,cyg_scheduler_sched_lock
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	499 lw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	500 addi a0,a0,1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	501 sw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	502 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	503
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	504 move s0,sp # save pointer to saved state
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	505
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	506 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	507
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	508 la a0,__interrupt_stack # a0 = stack top
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	509 la a1,__interrupt_stack_base # a1 = stack base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	510 sub a3,sp,a1 # a3 = sp - base
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	511 bltz a3,1f # not on istack if < 0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	512 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	513 sub t0,a0,sp # t0 = top - sp
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	514 bgtz t0,8f # already on istack if > 0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	515 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	516 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	517 move sp,a0 # switch to istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	518 8:
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 48 diff changeset	519 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	520 # (8 to keep dword alignment!)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	521 sw s0,0(sp) # save old SP on stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	522
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	523 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	524
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	525 subu sp,sp,mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	526
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	527 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	528
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	529 # Decode external interrupt via interrupt controller
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	530
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	531 hal_intc_decode s2
48 1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	532
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	533 # 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	534 # 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	535 # table.
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	536
48 1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	537 hal_intc_translate s2,s1
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	538
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	539 # 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	540 # 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	541
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	542 hal_diag_intr_start
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	543
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	544 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	545
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	546 # Call cyg_instrument to record that this interrupt is being raised.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	547
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	548 li a0,0x0301 # a0 = type = INTR,RAISE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	549 move a1,s1 # a1 = vector number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	550 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	551 move a2,s2 # a2 = interrupt number
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	552 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	553
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 48 diff changeset	554 #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	555 # 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	556 # 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	557 # 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	558
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	559 .extern hal_saved_interrupt_state
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	560 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	561 sw s0,0(v0)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	562
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	563 #endif
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	564
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	565 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	566
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	567 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	568
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	569 la t2,hal_interrupt_handlers # handler table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	570 add t2,t2,s1 # address of ISR ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	571 lw t2,0(t2) # ISR pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	572
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	573 la a1,hal_interrupt_data # data table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	574 add a1,a1,s1 # address of data ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	575 lw a1,0(a1) # Data pointer
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 move a0,s2 # pass interrupt number
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	578
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	579 jalr t2 # call ISR via t2
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	580 nop # (delay slot)
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 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	583
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	584 # If we are returning from the last nested interrupt, move back
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	585 # to the thread stack. interrupt_end() must be called on the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	586 # thread stack since it potentially causes a context switch.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	587 # Since we have arranged for the top of stack location to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	588 # 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	589 # and put it in SP.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	590
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	591
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	592 lw sp,mips_stack_frame_size(sp) # sp = *sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	593 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	594 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	595
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	596 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	597
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	598 # We only need to call _interrupt_end() when there is a kernel
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	599 # present to do any tidying up.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	600
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	601 # On return v0 bit 1 will indicate whether a DSR is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	602 # to be posted. Pass this together with a pointer to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	603 # the interrupt object we have just used to the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	604 # interrupt tidy up routine.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	605
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	606 # Note that s0, s1 and s2 are defined to be preserved across
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	607 # calls by the calling convention, so they still contain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	608 # the register dump, the vector offset and the interrupt number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	609 # respectively.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	610
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	611 move s2,v0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	612
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	613 la a1,hal_interrupt_objects # interrupt object table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	614 add a1,a1,s1 # address of object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	615 lw a1,0(a1) # a1 = object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	616
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	617 move a2,s0 # arg3 = saved register dump
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	618
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	619 .extern interrupt_end
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	620 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	621 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	622
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	623 move v0,s2 # return value from isr
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	624 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	625
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	626 restore_state:
92 08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	627 #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	628 move k0,v0
92 08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	629 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	630
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	631 # All done, restore CPU state and continue
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	632
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	633 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	634
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	635 # Disable interrupts again while we restore state.
92 08ffab08d2ee Merge from eCos master repository on 2000-05-26-07:47:03-BST jlarmour parents: 90 diff changeset	636 hal_cpu_int_disable
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	637
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	638 hal_diag_restore
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	639
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	640 hal_fpu_load sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	641
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	642 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	643 lhi t1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	644 llo t2,sp
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	645
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	646 mtc0 t0,cachectrl
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	647 mthi t1
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	648 mtlo t2
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	649
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	650 # load GPRs
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	651 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	652 # lgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	653 lgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	654 lgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	655 lgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	656 lgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	657 lgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	658 lgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	659 lgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	660 lgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	661 lgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	662 lgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	663 lgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	664 lgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	665 lgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	666 lgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	667 lgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	668 lgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	669 lgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	670 lgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	671 lgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	672 lgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	673 lgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	674 lgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	675 lgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	676 lgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	677 lgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	678 # lgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	679 # lgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	680 lgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	681 # lgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	682 lgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	683 lgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	684 .set at
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	685
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 52 diff changeset	686 #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	687
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	688 # 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	689 # 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	690 # 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	691 # 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	692 # 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	693
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	694 bgez k0,1f
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	695 nop
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	696 # Check for new cygmon
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	697 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	698 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	699 lw k1,0(k1)
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	700 lui k0,0x55aa
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	701 ori k0,0x4321
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	702 bne k0,k1,1f
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	703
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	704 # 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	705 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	706 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	707 lw k1,0(k1)
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	708 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	709 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	710 jr k1
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	711 srl k0,1
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	712 1:
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	713 #endif
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	714 lva 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	715 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	716 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	717
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	718 # 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	719 # exception
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	720
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	721 hal_cpu_eret k0,k1
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	722
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	723 FUNC_END(__default_interrupt_vsr)
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_intc_decode_data
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 ##-----------------------------------------------------------------------------
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	728 ## 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	729 ## 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	730
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	731 #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	732 .extern cyg_interrupt_call_pending_DSRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	733
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	734 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	735 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	736 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	737 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	738 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	739 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	740 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	741 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	742 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	743
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	744 hal_cpu_int_enable
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	745
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	746 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	747 nop
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	748
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	749 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	750
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	751 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	752
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	753 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	754 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	755
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	756 jr ra # go back
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	757 nop # delay slot
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	758
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	759 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	760 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	761
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	762 ##-----------------------------------------------------------------------------
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	763 ## 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	764
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	765 FUNC_START(__gccmain)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	766 jr ra
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	767 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	768 FUNC_END(__gccmain)
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	769
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	770 ##-----------------------------------------------------------------------------
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	771 ## hal_zero_bss
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	772 ## Zero bss. Done in assembler to be optimal rather than using memset,
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	773 ## which would risk zeroing bss while using it.
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	774
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	775 FUNC_START(hal_zero_bss)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	776 #ifdef CYGHWR_HAL_MIPS_64BIT
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	777 #define STORE_OP sd
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	778 #define BLOCK_SHIFT 6
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	779 #else
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	780 #define STORE_OP sw
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	781 #define BLOCK_SHIFT 5
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	782 #endif
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	783 la a0,__bss_start # start of bss
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	784 la a1,__bss_end # end of bss
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	785 andi a2,a0,mips_regsize-1 # is bss aligned?
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	786 bne a2,zero,1f # skip word copy
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	787 nop
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	788
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	789 # loop with 8 stores per loop
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	790 subu a3,a1,a0 # get length
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	791 srl a3,a3,BLOCK_SHIFT # get number of blocks
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	792 sll a3,a3,BLOCK_SHIFT # get length of blocks
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	793 addu a3,a0,a3 # get end addr of blocks
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	794 2: STORE_OP zero,(mips_regsize*0)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	795 STORE_OP zero,(mips_regsize*1)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	796 STORE_OP zero,(mips_regsize*2)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	797 STORE_OP zero,(mips_regsize*3)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	798 STORE_OP zero,(mips_regsize*4)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	799 STORE_OP zero,(mips_regsize*5)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	800 STORE_OP zero,(mips_regsize*6)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	801 STORE_OP zero,(mips_regsize*7)(a0)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	802 addu a0,a0,mips_regsize*8 # next addr
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	803 bne a3,a0,2b # to next store
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	804 nop
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	805
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	806 # finish 1 byte at a time
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	807 1: sb zero,0(a0) # zero memory
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	808 addiu a0,a0,1 # next addr
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	809 bne a0,a1,1b # to next store
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	810 nop
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	811 jr ra
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	812 FUNC_END(hal_zero_bss)
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	813
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	814
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	815 ##-----------------------------------------------------------------------------
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	816 ## VSR springboard for break instruction exceptions
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	817 ## Both GCC and GDB use break instructions. GCC for division-by-zero
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	818 ## notification and GDB for program-flow breakpoints. This springboard
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	819 ## looks for the d-b-z kind and directs them to another vector so libc
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	820 ## can handle these without affecting the debugger.
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	821
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	822 FUNC_START(__break_vsr_springboard)
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 126 diff changeset	823 mvafc0 k0,epc
90 70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	824 mfc0 k1,cause
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	825 bltzl k1,1f
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	826 addi k0,k0,4 # delay slot (only executed if BD set)
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	827 1: lw k1,0(k0) # get break instruction
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	828 la k0,0x0007000d # break 0x7 used by GCC for d-b-z
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	829 bne k0,k1,2f
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	830 nop
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	831 ori k0,$0,14*4 # CYGNUM_HAL_VECTOR_DIV_BY_ZERO
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	832 la k1,hal_vsr_table # address of VSR table
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	833 add k1,k1,k0 # offset of VSR entry
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	834 lw k1,0(k1) # k1 = pointer to VSR
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	835 jr k1 # go there
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	836 nop # (delay slot)
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	837 2: ori k0,$0,9*4 # CYGNUM_HAL_VECTOR_BREAKPOINT
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	838 j __default_exception_vsr
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	839 nop # (delay slot)
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	840 FUNC_END(__break_vsr_springboard)
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	841
70190fa0fe10 Merge from eCos master repository on 2000-05-19-07:47:03-BST jlarmour parents: 76 diff changeset	842
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	843 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	844 ## Interrupt Stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	845 ## Used during intialization and for executing ISRs.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	846
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	847 .bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	848
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	849 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	850 .global cyg_interrupt_stack_base
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	851 cyg_interrupt_stack_base:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	852 __interrupt_stack_base:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	853 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	854 .byte 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	855 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	856 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	857 .global cyg_interrupt_stack
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	858 cyg_interrupt_stack:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	859 __interrupt_stack:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	860
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	861 .long 0,0,0,0,0,0,0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	862
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	863 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	864 ## VSR table.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	865 ## The main interrupt code indirects through here to find the VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	866 ## to execute for each architecture defined interrupt.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	867 ## 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	868 ## table is now allocated at 0x80000100.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	869
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	870 #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	871
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	872 ## .section ".vsr_table","a"
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	873
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	874 .data
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	875
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	876 .globl hal_vsr_table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	877
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	878 hal_vsr_table:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	879 .long __default_interrupt_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	880 .rept 63
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	881 .long __default_exception_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	882 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	883
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	884 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	885
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	886 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	887 # Interrupt vector tables.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	888 # These tables contain the isr, data and object pointers used to deliver
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	889 # interrupts to user code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	890 # hal_interrupt_level contains the interrupt level set by
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	891 # HAL_INTERRUPT_CONFIGURE().
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	892 # 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	893 # 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	894 # 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	895
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	896 #ifndef CYG_HAL_MIPS_ISR_TABLES_DEFINED
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	897
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	898 .extern hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	899
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	900 .data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	901
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	902 .globl hal_interrupt_handlers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	903 hal_interrupt_handlers:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	904 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	905 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	906 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	907 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	908 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	909 .long hal_default_isr
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	910
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	911
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	912 .globl hal_interrupt_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	913 hal_interrupt_data:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	914 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	915 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	916 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	917
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	918 .globl hal_interrupt_objects
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	919 hal_interrupt_objects:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	920 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	921 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	922 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	923
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	924 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	925
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	926 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	927 ## end of vectors.S
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	928
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	929

Mercurial > ecos

annotate packages/hal/mips/arch/current/src/vectors.S @ 154:e2d866e32dac