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

annotate packages/hal/mips/arch/current/src/vectors.S @ 50:a0774359f013 ecos-sw-1999-11-02

Merge from eCos master repository on 1999-11-02-17:02:15-GMT

author	jlarmour
date	Tue, 02 Nov 1999 20:57:07 +0000
parents	1370c5e55234
children	7b011d1ab50f

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####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	9 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	10 # -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	11 # The contents of this file are subject to the Cygnus eCos Public License
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	12 # Version 1.0 (the "License"); you may not use this file except in
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	13 # compliance with the License. You may obtain a copy of the License at
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	14 # http://sourceware.cygnus.com/ecos
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	15 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	16 # Software distributed under the License is distributed on an "AS IS"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	18 # License for the specific language governing rights and limitations under
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	19 # the License.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	20 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	21 # The Original Code is eCos - Embedded Cygnus Operating System, released
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	22 # September 30, 1998.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	23 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	24 # The Initial Developer of the Original Code is Cygnus. Portions created
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	25 # by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	26 # -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	27 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	28 #####COPYRIGHTEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	29 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	30 #######DESCRIPTIONBEGIN####
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 ## Author(s): nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	33 ## Contributors: nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	34 ## Date: 1998-02-04
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	35 ## Purpose: MIPS exception vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	36 ## Description: This file defines the code placed into the exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	37 ## vectors. It also contains the first level default VSRs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	38 ## that save and restore state for both exceptions and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	39 ## interrupts.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	40 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 ######DESCRIPTIONEND####
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 ##=============================================================================
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 #include <pkgconf/system.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46 #include <pkgconf/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48 #ifdef CYGPKG_KERNEL
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49 # include <pkgconf/kernel.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	52 #include <cyg/hal/arch.inc>
0 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 .extern cyg_instrument
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	55
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57 ## Hardware supplied vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	58
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	59 .set noreorder
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	61 .section ".reset_vector","ax"
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 # Reset vector at 0xBFC00000
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	65 FUNC_START(reset_vector)
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	66
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	67 #ifndef CYG_HAL_STARTUP_RAM
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	68 # 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	69
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	70 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	71 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	72 and k1,k1,k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	73 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	74 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	75
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	76 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	77 jalr k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	78 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	79 1:
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	80 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	81 and k1,k1,k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	82 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	83 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	84
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	85 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	86 jr k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	87 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	88 2:
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	89 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	90 lar v0,_start # jump to start
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	91 jr v0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	92 nop # (delay slot)
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	93
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	94 FUNC_END(reset_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	95
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 .section ".debug_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	97
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	98 # Debug vector at 0xBFC00200
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	100 FUNC_START(debug_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101 la k0,32
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102 la k1,hal_vsr_table # Get VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103 lw k1,32*4(k1) # load debug vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	106 FUNC_END(debug_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	107
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108 .section ".other_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110 # Common vector at 0x80000080 or 0xBFC00180
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: 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_START(other_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113 mfc0 k0,cause # K0 = exception cause
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115 andi k0,k0,0x7F # isolate exception code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116 la k1,hal_vsr_table # address of VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117 add k1,k1,k0 # offset of VSR entry
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118 lw k1,0(k1) # k1 = pointer to VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120 nop # (delay slot)
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	121
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	122 FUNC_END(other_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	123
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124 .section ".utlb_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	125
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	126 FUNC_START(utlb_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127 la k0,33
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128 la k1,hal_vsr_table # Get VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 lw k1,33*4(k1) # load utlb vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	132 FUNC_END(utlb_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 ## Startup code
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	136
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	139 FUNC_START(_start)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	140
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 # Initialize hardware
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	142 hal_cpu_init
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	143 hal_diag_init
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	144 hal_mmu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	145 hal_fpu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	146 hal_memc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	147 hal_intc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	148 hal_cache_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	149 hal_timer_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	150
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	151 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152 la gp,_gp
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 # load initial stack pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155 la a0,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 move sp,a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	158 hal_mon_init
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	159
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 #ifdef CYG_HAL_STARTUP_ROM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161 # Copy data from ROM to RAM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 .extern hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 jal hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	166
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	168
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169 # Zero BSS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	170
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	171 .extern hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	172 jal hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	175 # 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	176 # initialization routines.
0 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 .extern hal_variant_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	179 jal hal_variant_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	180 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	181
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	182 .extern hal_platform_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	183 jal hal_platform_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	184 nop
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	185
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	186 # Call constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	187 .extern cyg_hal_invoke_constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	188 jal cyg_hal_invoke_constructors
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	189 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	190
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	191 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	192 .extern initialize_stub
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	193 jal initialize_stub
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194 nop
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	195 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	196
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	197 # Call cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	199 .extern cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 jal cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	203 9: b 9b # Loop if we return
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204 nop # (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	206 FUNC_END(_start )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	208
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	209 ##-----------------------------------------------------------------------------
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	210
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	211 FUNC_START(__warm_start)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	212
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	213 ## 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	214 ## 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	215 #if 0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	216 move s0,t0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	217 move s1,a1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	218
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	219 # hal_diag_init
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	220
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	221 hal_diag_writec '$'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	222 mfc0 a0,$30 # get ErrorEPC
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	223 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	224 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	225 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	226 hal_diag_writec '-'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	227 move a0,s0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	228 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	229 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	230 hal_diag_writec '-'
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	231 move a0,s1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	232 jalr k0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	233 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	234 1:
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	235 b 1b
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	236 nop
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	237 #endif
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	238
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	239 # At present we treat this like an NMI.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	240 b __nmi_entry
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	241 nop
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 FUNC_END(__warm_start)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	244
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	245 ##-----------------------------------------------------------------------------
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	246
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	247 FUNC_START(__nmi_entry)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	248
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	249 # Clear exception state
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	250 hal_cpu_except_enable
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	251
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	252 # 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	253 # default exception handler saves the right PC value.
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	254 mfc0 k0,$30
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	255 nop; nop; nop;
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	256 mtc0 k0,epc
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	257 nop; nop; nop;
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	258
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	259 #if (INITIAL_SR & 0x00400000) == 0
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	260 # 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	261 # 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	262 mfc0 k0,status
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	263 la k1,0xFFBFFFFF
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	264 and k0,k0,k1
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	265 mtc0 k0,status
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	266 #endif
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	267
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	268 la k0,34*4
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	269 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	270 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	271 jr k1 # go there
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	272 nop # (delay slot)
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 FUNC_END(__nmi_entry)
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
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	277 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	278 ## Default exception VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	279 ## Saves machine state and calls external handling code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	280
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	281 FUNC_START(__default_exception_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	282
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	283 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	284 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	285 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	286 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	287
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	288 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	289
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	290 #ifdef CYG_HAL_ROM_MONITOR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	291 # Switch to interrupt stack to handle exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	292 la sp,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	293 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	294
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	295 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	296 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	297
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	298 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	299
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	300 # store GPRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	301 .set noat
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	302 sw $0,(mipsreg_regs+0*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	303 sw $1,(mipsreg_regs+1*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	304 sw $2,(mipsreg_regs+2*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305 sw $3,(mipsreg_regs+3*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	306 sw $4,(mipsreg_regs+4*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	307 sw $5,(mipsreg_regs+5*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	308 sw $6,(mipsreg_regs+6*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	309 sw $7,(mipsreg_regs+7*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	310 sw $8,(mipsreg_regs+8*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	311 sw $9,(mipsreg_regs+9*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	312 sw $10,(mipsreg_regs+10*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	313 sw $11,(mipsreg_regs+11*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	314 sw $12,(mipsreg_regs+12*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	315 sw $13,(mipsreg_regs+13*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	316 sw $14,(mipsreg_regs+14*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	317 sw $15,(mipsreg_regs+15*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	318 sw $16,(mipsreg_regs+16*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	319 sw $17,(mipsreg_regs+17*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	320 sw $18,(mipsreg_regs+18*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321 sw $19,(mipsreg_regs+19*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	322 sw $20,(mipsreg_regs+20*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	323 sw $21,(mipsreg_regs+21*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	324 sw $22,(mipsreg_regs+22*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325 sw $23,(mipsreg_regs+23*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	326 sw $24,(mipsreg_regs+24*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327 sw $25,(mipsreg_regs+25*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	328 # sw $26,(mipsreg_regs+26*4)(sp) # == K0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	329 # sw $27,(mipsreg_regs+27*4)(sp) # == K1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	330 sw $28,(mipsreg_regs+28*4)(sp) # == GP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	331 # sw $29,(mipsreg_regs+29*4)(sp) # == SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	332 sw $30,(mipsreg_regs+30*4)(sp) # == FP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	333 sw $31,(mipsreg_regs+31*4)(sp) # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	334 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	335
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	336 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	337 mflo a1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	338 sw a0,mipsreg_hi(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	339 sw a1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	340
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	341 # K1 contains original SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	342 sw k1,(mipsreg_regs+29*4)(sp) # store in reg dump
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	343
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	344 # save remaining machine state registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	345 mfc0 t0,cause
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	346 mfc0 t1,status
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	347 mfc0 t2,cachectrl
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	348 mfc0 t3,badvr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	349 mfc0 t4,config
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	350 mfc0 t5,prid
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	351 mfc0 t6,epc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	352
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	353 sw t0,mipsreg_cause(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	354 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	355 sw t2,mipsreg_cachectrl(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	356 sw t3,mipsreg_badvr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	357 sw t4,mipsreg_config(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	358 sw t5,mipsreg_prid(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	359 sw t6,mipsreg_pc(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	360
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	361 hal_fpu_save sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	362
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	363 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	364
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	365 hal_diag_excpt_start
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	366
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	367 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	368 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	369
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	370 move s0,sp # save pointer to saved state
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 addi sp,sp,-mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	373
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	374 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	375
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	376 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	377
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	378 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	379
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	380 .extern cyg_hal_exception_handler
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	381 j cyg_hal_exception_handler # call C code
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	382 move a0,s0 # arg0 = register dump (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	383
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	384 # When the exception handler returns, it will
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	385 # go back to restore_state, below.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	386
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	387 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	388
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	389 ##------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	390 ## Default interrupt VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	391 ## Saves machine state and calls appropriate ISR. When done, calls
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	392 ## interrupt_end() to finish up and possibly reschedule.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	393
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	394 FUNC_START(__default_interrupt_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	395
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	396
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	397 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	398 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	399 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	400 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	401
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	402 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	403
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	404 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	405 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	406
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	407 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	408
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	409 # store GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	410 .set noat
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	411 sw $0,(mipsreg_regs+0*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	412 sw $1,(mipsreg_regs+1*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	413 sw $2,(mipsreg_regs+2*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	414 sw $3,(mipsreg_regs+3*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	415 sw $4,(mipsreg_regs+4*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	416 sw $5,(mipsreg_regs+5*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	417 sw $6,(mipsreg_regs+6*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	418 sw $7,(mipsreg_regs+7*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	419 sw $8,(mipsreg_regs+8*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	420 sw $9,(mipsreg_regs+9*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	421 sw $10,(mipsreg_regs+10*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	422 sw $11,(mipsreg_regs+11*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	423 sw $12,(mipsreg_regs+12*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	424 sw $13,(mipsreg_regs+13*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	425 sw $14,(mipsreg_regs+14*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	426 sw $15,(mipsreg_regs+15*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	427 sw $16,(mipsreg_regs+16*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	428 sw $17,(mipsreg_regs+17*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	429 sw $18,(mipsreg_regs+18*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	430 sw $19,(mipsreg_regs+19*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	431 sw $20,(mipsreg_regs+20*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	432 sw $21,(mipsreg_regs+21*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	433 sw $22,(mipsreg_regs+22*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	434 sw $23,(mipsreg_regs+23*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	435 sw $24,(mipsreg_regs+24*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	436 sw $25,(mipsreg_regs+25*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	437 # sw $26,(mipsreg_regs+26*4)(sp) # == K0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	438 # sw $27,(mipsreg_regs+27*4)(sp) # == K1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	439 sw $28,(mipsreg_regs+28*4)(sp) # == GP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	440 # sw $29,(mipsreg_regs+29*4)(sp) # == SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	441 sw $30,(mipsreg_regs+30*4)(sp) # == FP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	442 sw $31,(mipsreg_regs+31*4)(sp) # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	443 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	444
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	445 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	446 mflo a1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	447 sw a0,mipsreg_hi(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	448 sw a1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	449
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	450 # K1 contains original SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	451 sw k1,(mipsreg_regs+29*4)(sp) # store in reg dump
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	452
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	453 mfc0 t1,status
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	454 mfc0 t2,cachectrl
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	455 mfc0 t3,epc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	456
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	457 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	458 sw t2,mipsreg_cachectrl(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	459 sw t3,mipsreg_pc(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	460
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	461 hal_fpu_save sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	462
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	463 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	464
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	465 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	466 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	467
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	468 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	469 .extern cyg_scheduler_sched_lock
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	470 la v0,cyg_scheduler_sched_lock
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	471 lw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	472 addi a0,a0,1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	473 sw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	474 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	475
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	476 move s0,sp # save pointer to saved state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	477
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	478 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	479
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	480 la a0,__interrupt_stack # a0 = stack top
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	481 la a1,__interrupt_stack_base # a1 = stack base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	482 sub a3,sp,a1 # a3 = sp - base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	483 bltz a3,1f # if < 0 - not on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	484 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	485 sub t0,a0,sp # t0 = top - sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	486 bgtz t0,8f # if > 0 - already on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	487 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	488 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	489 move sp,a0 # switch to istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	490 8:
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 48 diff changeset	491 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	492 # (8 to keep dword alignment!)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	493 sw s0,0(sp) # save old SP on stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	494
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	495 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	496
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	497 subu sp,sp,mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	498
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	499 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	500
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	501 # Decode external interrupt via interrupt controller
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	502
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	503 hal_intc_decode s2
48 1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	504
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	505 # 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	506 # 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	507 # table.
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	508
48 1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	509 hal_intc_translate s2,s1
1370c5e55234 Merge from eCos master repository on 1999-10-25-21:18:27-BST jlarmour parents: 38 diff changeset	510
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	511 # 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	512 # 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	513
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	514 hal_diag_intr_start
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	515
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	516 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	517
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	518 # Call cyg_instrument to record that this interrupt is being raised.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	519
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	520 li a0,0x0301 # a0 = type = INTR,RAISE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	521 move a1,s1 # a1 = vector number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	522 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	523 move a2,s2 # a2 = interrupt number
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	524 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	525
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 48 diff changeset	526 #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	527 # 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	528 # 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	529 # 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	530
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	531 .extern hal_saved_interrupt_state
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	532 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	533 sw s0,0(v0)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	534
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	535 #endif
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	536
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	537 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	538
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	539 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	540
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	541 la t2,hal_interrupt_handlers # handler table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	542 add t2,t2,s1 # address of ISR ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	543 lw t2,0(t2) # ISR pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	544
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	545 la a1,hal_interrupt_data # data table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	546 add a1,a1,s1 # address of data ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	547 lw a1,0(a1) # Data pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	548
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	549 move a0,s2 # pass interrupt number
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	550
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	551 jalr t2 # call ISR via t2
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	552 nop # (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	553
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	554 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	555
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	556 # If we are returning from the last nested interrupt, move back
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	557 # to the thread stack. interrupt_end() must be called on the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	558 # thread stack since it potentially causes a context switch.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	559 # Since we have arranged for the top of stack location to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	560 # 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	561 # and put it in SP.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	562
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	563
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	564 lw sp,mips_stack_frame_size(sp) # sp = *sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	565 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	566 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	567
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	568 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	569
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	570 # We only need to call _interrupt_end() when there is a kernel
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	571 # present to do any tidying up.
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 # On return v0 bit 1 will indicate whether a DSR is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	574 # to be posted. Pass this together with a pointer to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	575 # the interrupt object we have just used to the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	576 # interrupt tidy up routine.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	577
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	578 # Note that s0, s1 and s2 are defined to be preserved across
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	579 # calls by the calling convention, so they still contain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	580 # the register dump, the vector offset and the interrupt number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	581 # respectively.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	582
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	583 move s2,v0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	584
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	585 la a1,hal_interrupt_objects # interrupt object table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	586 add a1,a1,s1 # address of object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	587 lw a1,0(a1) # a1 = object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	588
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	589 move a2,s0 # arg3 = saved register dump
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 .extern interrupt_end
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	592 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	593 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	594
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	595 move v0,s2 # return value from isr
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	596 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	597
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	598 restore_state:
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	599 move k0,v0
0 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 # All done, restore CPU state and continue
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	602
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	603 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	604
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	605 # Disable interrupts again while we restore state.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	606
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	607 hal_diag_restore
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	608
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	609 hal_fpu_load sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	610
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	611 lw t0,mipsreg_cachectrl(sp)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	612 lw t1,mipsreg_hi(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	613 lw t2,mipsreg_lo(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	614
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 16 diff changeset	615 mtc0 t0,cachectrl
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	616 mthi t1
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	617 mtlo t2
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	618
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	619 # load GPRs
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	620 .set noat
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	621 # lw $0,(mipsreg_regs+0*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	622 lw $1,(mipsreg_regs+1*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	623 lw $2,(mipsreg_regs+2*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	624 lw $3,(mipsreg_regs+3*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	625 lw $4,(mipsreg_regs+4*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	626 lw $5,(mipsreg_regs+5*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	627 lw $6,(mipsreg_regs+6*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	628 lw $7,(mipsreg_regs+7*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	629 lw $8,(mipsreg_regs+8*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	630 lw $9,(mipsreg_regs+9*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	631 lw $10,(mipsreg_regs+10*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	632 lw $11,(mipsreg_regs+11*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	633 lw $12,(mipsreg_regs+12*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	634 lw $13,(mipsreg_regs+13*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	635 lw $14,(mipsreg_regs+14*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	636 lw $15,(mipsreg_regs+15*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	637 lw $16,(mipsreg_regs+16*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	638 lw $17,(mipsreg_regs+17*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	639 lw $18,(mipsreg_regs+18*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	640 lw $19,(mipsreg_regs+19*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	641 lw $20,(mipsreg_regs+20*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	642 lw $21,(mipsreg_regs+21*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	643 lw $22,(mipsreg_regs+22*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	644 lw $23,(mipsreg_regs+23*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	645 lw $24,(mipsreg_regs+24*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	646 lw $25,(mipsreg_regs+25*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	647 # lw $26,(mipsreg_regs+26*4)(sp) # == K0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	648 # lw $27,(mipsreg_regs+27*4)(sp) # == K1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	649 lw $28,(mipsreg_regs+28*4)(sp) # == GP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	650 # lw $29,(mipsreg_regs+29*4)(sp) # == SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	651 lw $30,(mipsreg_regs+30*4)(sp) # == FP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	652 lw $31,(mipsreg_regs+31*4)(sp) # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	653 .set at
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	654
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	655
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	656 #if defined(CYG_HAL_USE_ROM_MONITOR_CYGMON)
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	657
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	658 # 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	659 # 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	660 # 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	661 # 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	662 # 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	663
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	664 bgez k0,1f
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	665 nop
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	666 # Check for new cygmon
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	667 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	668 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	669 lw k1,0(k1)
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	670 lui k0,0x55aa
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	671 ori k0,0x4321
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	672 bne k0,k1,1f
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	673
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	674 # 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	675 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	676 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	677 lw k1,0(k1)
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	678 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	679 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	680 jr k1
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	681 srl k0,1
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	682 1:
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 24 diff changeset	683 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	684 lw k0,mipsreg_pc(sp) # K0 = return PC
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	685 lw k1,mipsreg_sr(sp) # K1 = saved SR
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	686 lw sp,(mipsreg_regs+29*4)(sp) # load SP
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	687
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	688 # 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	689 # exception
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	690
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	691 hal_cpu_eret k0,k1
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	692
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	693 FUNC_END(__default_interrupt_vsr)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	694
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	695 hal_intc_decode_data
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	696
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	697 ##-----------------------------------------------------------------------------
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	698 ## 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	699 ## 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	700
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	701 #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	702 .extern cyg_interrupt_call_pending_DSRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	703
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	704 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	705 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	706 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	707 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	708 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	709 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	710 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	711 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	712 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	713
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	714 hal_cpu_int_enable
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	715
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	716 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	717 nop
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	718
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	719 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	720
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	721 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	722
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	723 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	724 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	725
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	726 jr ra # go back
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	727 nop # delay slot
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	728
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	729 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	730 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	731
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	732 ##-----------------------------------------------------------------------------
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	733 ## 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	734
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	735 FUNC_START(__gccmain)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	736 jr ra
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	737 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	738 FUNC_END(__gccmain)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	739
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	740 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	741 ## Interrupt Stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	742 ## Used during intialization and for executing ISRs.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	743
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	744 .bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	745
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	746 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	747 .global cyg_interrupt_stack_base
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	748 cyg_interrupt_stack_base:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	749 __interrupt_stack_base:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	750 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	751 .byte 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	752 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	753 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	754 .global cyg_interrupt_stack
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	755 cyg_interrupt_stack:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	756 __interrupt_stack:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	757
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	758 .long 0,0,0,0,0,0,0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	759
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	760 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	761 ## VSR table.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	762 ## The main interrupt code indirects through here to find the VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	763 ## to execute for each architecture defined interrupt.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	764 ## 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	765 ## table is now allocated at 0x80000100.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	766
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	767 #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	768
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	769 ## .section ".vsr_table","a"
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	770
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	771 .data
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	772
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	773 .globl hal_vsr_table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	774
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	775 hal_vsr_table:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	776 .long __default_interrupt_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	777 .rept 63
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	778 .long __default_exception_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	779 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	780
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	781 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	782
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	783 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	784 # Interrupt vector tables.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	785 # These tables contain the isr, data and object pointers used to deliver
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	786 # interrupts to user code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	787 # hal_interrupt_level contains the interrupt level set by
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	788 # HAL_INTERRUPT_CONFIGURE().
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	789 # 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	790 # 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	791 # 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	792
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	793 #ifndef CYG_HAL_MIPS_ISR_TABLES_DEFINED
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	794
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	795 .extern hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	796
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	797 .data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	798
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	799 .globl hal_interrupt_handlers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	800 hal_interrupt_handlers:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	801 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	802 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	803 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	804 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	805 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	806 .long hal_default_isr
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	807
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	808
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	809 .globl hal_interrupt_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	810 hal_interrupt_data:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	811 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	812 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	813 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	814
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	815 .globl hal_interrupt_objects
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	816 hal_interrupt_objects:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	817 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	818 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	819 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	820
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	821 #endif
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	822
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	823 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	824 ## end of vectors.S
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	825
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	826

Mercurial > nand-ecoscentric

annotate packages/hal/mips/arch/current/src/vectors.S @ 50:a0774359f013 ecos-sw-1999-11-02