flash_v2: packages/hal/powerpc/arch/current/src/vectors.S annotate

annotate packages/hal/powerpc/arch/current/src/vectors.S @ 18:7253dcc42a09 ecos-sw-1999-06-25

Merge from eCos master repository on 1999-06-25-15:31:50-BST

author	jlarmour
date	Fri, 25 Jun 1999 08:28:05 +0000
parents	4f2df4ab82c8
children	5f5102441818

rev	line source
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	1 ##==========================================================================
0 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 ## PowerPC exception vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	6 ##
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	7 ##==========================================================================
0 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####
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	29 ##==========================================================================
0 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 ##
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	32 ## Author(s): nickg, jskov
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	33 ## Contributors: nickg, jskov
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	34 ## Date: 1999-02-20
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	35 ## Purpose: PowerPC exception vectors
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	36 ## Description: This file defines the code placed into the exception
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	37 ## vectors. It also contains the first level default VSRs
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	38 ## that save and restore state for both exceptions and
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	39 ## interrupts.
0 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 ##
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	43 ##==========================================================================
0 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/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47 #ifdef CYGPKG_KERNEL
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48 #include <pkgconf/kernel.h> // CYGPKG_KERNEL_INSTRUMENT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	50
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	51 #define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	52 #include "cyg/hal/ppc_regs.h"
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53 #include "cyg/hal/ppc.inc"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54
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 .file "vectors.S"
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 .extern hal_interrupt_handlers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60 .extern hal_interrupt_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	61 .extern hal_interrupt_objects
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 .extern cyg_instrument
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65 .extern hal_hardware_init
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	66
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	67 #===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	68 # MSR initialization value
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	69 # zero all bits except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	70 # FP = floating point available
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	71 # ME = machine check enabled
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	72 # IP = vectors at 0xFFFxxxxx (ROM startup only)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	73 # IR = instruction address translation
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	74 # DR = data address translation
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	75 # RI = recoverable interrupt
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	76
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	77 #define CYG_MSR_COMMON (MSR_FP \| MSR_ME \| MSR_IR \| MSR_DR \| MSR_RI)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	78 #if defined(CYG_HAL_STARTUP_ROM) \|\| defined(CYG_HAL_STARTUP_STUBS)
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	79 # ifdef CYG_HAL_POWERPC_COPY_VECTORS
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	80 # define CYG_MSR CYG_MSR_COMMON
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	81 # else
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	82 # define CYG_MSR (CYG_MSR_COMMON \| MSR_IP)
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	83 # endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	84 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	85 #ifdef CYG_HAL_STARTUP_RAM
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	86 #define CYG_MSR CYG_MSR_COMMON
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	87 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	88 #ifdef CYG_HAL_POWERPC_SIM
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	89 # When building for SIM, don~t enable MMU -- it~s not needed since caches
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	90 # are disabled, and there is a runtime simulation overhead.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	91 #undef CYG_MSR
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	92 #define CYG_MSR (CYG_MSR_COMMON & ~(MSR_IR \| MSR_DR))
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	93 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	94
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	95 #===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 # If the following option is enabled, we only save registers up to R12.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	97 # The PowerPC ABI defines registers 13..31 as callee saved and thus we do
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	98 # not need to save them when calling C functions.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	102 #define MAX_SAVE_REG 12
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104 #else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 #define MAX_SAVE_REG 31
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 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	110 #===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111 # Start by defining the exceptions vectors that must be placed at
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 # locations 0xFFF00000 and 0x00000000. The following code will normally
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113 # be located at 0xFFF00000 in the ROM. It may optionally be copied out
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 # to 0x00000000 if we want to use the RAM vectors. For this reason this code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115 # MUST BE POSITION INDEPENDENT. In RAM loaded configurations, this code may
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116 # be placed at 0x00000000 during loading.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118 .section ".vectors","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	120 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	121 # Unused first vector.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	123 rom_vectors:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124 lwi r3,_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	125 mtlr r3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	126 blr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128 .byte 0x11
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 .byte 0x22
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 .byte 0x33
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 .byte 0x44
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	133 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 # Reset vector.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	136 .p2align 8
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137 .globl reset_vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139 reset_vector:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	140 lwi r3,_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 mtlr r3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	142 blr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	143
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	144 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	145 # Macro for generating an exception vector service routine
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	146
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	147 .macro exception_vector name
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	148 .p2align 8
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	149 .globl __exception_\name
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150 __exception_\name:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	151 mtspr SPRG1,r3 # stash some work registers away
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	152 mtspr SPRG2,r4
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	153 mtspr SPRG3,r5
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	154 mfcr r4 # stash CR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155 li r5,__exception_\name@L # load low half of vector address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 srwi r5,r5,6 # shift right by 6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157 lwi r3,hal_vsr_table # table base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158 lwzx r3,r3,r5 # address of vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	159 mflr r5 # save link register
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 mtlr r3 # put vsr address into it
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161 li r3,__exception_\name@L # reload low half of vector address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162 blr # go to common code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 .endm
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	165 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	166 # Define the exception vectors.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168 # These are the architecture defined vectors that
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169 # are always present.
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 exception_vector machine_check
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	172 exception_vector data_storage
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173 exception_vector instruction_storage
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174 exception_vector external
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	175 exception_vector alignment
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	176 #if defined(CYG_HAL_STARTUP_ROM) \|\| defined(CYG_HAL_STARTUP_STUBS) \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	177 \|\| defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	178 exception_vector program
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	179 #else
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	180 # Provide a crude hook to the GDB exception handler in ROM.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	181 # This allows the testing infrastructure to rely on breakpoints
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	182 # to terminate tests, even when the tests are compiled without
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	183 # the GDB stub.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	184 # It is _not_ a generic solution to the problem; in particular it
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	185 # is not possible to continue after a breakpoint is hit.
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	186 #
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	187 # Note that for platforms where StubROM vectors are copied into RAM
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	188 # at 0x00000000, simply skipping the copy of vector 0x700 is a
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	189 # better solution. See CYGPRI_STUBROM_HAS_RAM_VECTORS below.
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	190
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	191 .p2align 8
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	192 .globl __exception_program
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	193 __exception_program:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	194 bl _init_CPU # disable caches.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	195 lwi r3,0xfff00700 # address of trap handler
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	196 mtlr r3 # in ROM.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	197 blr # jump to it.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	198
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	199 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 exception_vector floatingpoint_unavailable
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201 exception_vector decrementer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202 exception_vector reserved_00a00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	203 exception_vector reserved_00b00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204 exception_vector system_call
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205 exception_vector trace
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	206 exception_vector floatingpoint_assist
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207 exception_vector reserved_00f00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	208
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	209 # There are some additional vectors defined
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	210 # on various implementations.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	211
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	212 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	213 # MPC8xx vectors
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	214
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	215 exception_vector software_emu
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	216 exception_vector instruction_tlb_miss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	217 exception_vector data_tlb_miss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	218 exception_vector instruction_tlb_error
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	219 exception_vector data_tlb_error
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	220 exception_vector reserved_01500
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	221 exception_vector reserved_01600
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	222 exception_vector reserved_01700
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	223 exception_vector reserved_01800
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	224 exception_vector reserved_01900
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	225 exception_vector reserved_01A00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	226 exception_vector reserved_01B00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	227 exception_vector data_breakpoint
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	228 exception_vector instruction_breakpoint
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	229 exception_vector peripheral_breakpoint
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	230 exception_vector NMI_port
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	231
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	232 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	233 rom_vectors_end:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	234
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	235 #===========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	236 # Real startup code. We jump here from the various reset vectors to set up
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	237 # the world.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	238
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	239 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	240 .globl _start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	241
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	242 _start:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	243 # Initialize CPU
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	244 bl _init_CPU
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	245
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	246 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	247 # Disable special MPC8xx "development support" which
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	248 # suppresses trace exceptions. The CPU seems to hang, not
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	249 # executing from offset 0x1e00(?) as expected.
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	250
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	251 lwi r3,0x00000007
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	252 mtspr ICTRL,r3
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	253
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	254 li r3,0
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	255 mtspr DER, r3
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	256 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	257
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	258 # Set up global offset table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259 lwi r2,_GLOBAL_OFFSET_TABLE_
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	260
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261 # set up time base register to zero
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	262 xor r3,r3,r3
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	263 mtspr TBL_W,r3
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	264 xor r4,r4,r4
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	265 mtspr TBU_W,r4
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	266
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	267 # Call platform specific hardware initialization
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	268 # This may include memory controller initialization. It is not
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	269 # safe to access RAM until after this point.
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	270 bl hal_hardware_init # this is platform dependent
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	271
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	272 # set up stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273 lwi sp,__interrupt_stack
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	274 mtspr SPRG0,sp # save in sprg0 for later use
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	275
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	276 #if defined(CYG_HAL_STARTUP_ROM) \|\| defined(CYG_HAL_STARTUP_STUBS)
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 # Copy data from ROM to ram
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	279 lwi r3,__rom_data_start # r3 = rom start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	280 lwi r4,__ram_data_start # r4 = ram start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	281 lwi r5,__ram_data_end # r5 = ram end
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 cmplw r4,r5 # skip if no data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	284 beq 2f
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	285
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	286 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	287 lwz r0,0(r3) # get word from ROM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	288 stw r0,0(r4) # store in RAM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	289 addi r3,r3,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	290 addi r4,r4,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	291 cmplw r4,r5 # compare
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	292 blt 1b # loop if not yet done
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	293 2:
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	294 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	295
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	296
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	297 #ifdef CYG_HAL_POWERPC_COPY_VECTORS // only for StubRom-supported startup
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	298
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	299
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	300 #ifdef CYGPRI_STUBROM_HAS_RAM_VECTORS
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	301 # ifdef CYG_HAL_STARTUP_RAM
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	302 # ifndef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	303 # define CYGPRI_SKIP_BREAKPOINT_VECTOR
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	304 # endif // no stubs
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	305 # endif // RAM startup
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	306 #endif // Stubrom vectors are in RAM
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	307
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	308 # Copy RAM exception vectors from ROM (or load place) to RAM
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	309 lwi r3,rom_vectors # r3 = rom start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	310 lwi r4,0 # r4 = ram start
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	311 #ifdef CYGPRI_SKIP_BREAKPOINT_VECTOR
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	312 lwi r5,__exception_program # r5 = end of first leg of copy
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	313 #else
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	314 lwi r5,rom_vectors_end # r5 = rom end
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	315 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	316
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	317 cmplw r3,r5 # skip if no vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	318 beq 2f
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	319
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	320 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321 lwz r0,0(r3) # get word from ROM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	322 stw r0,0(r4) # store in RAM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	323 addi r3,r3,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	324 addi r4,r4,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325 cmplw r3,r5 # compare
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	326 blt 1b # loop if not yet done
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327 2:
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	328 #ifdef CYGPRI_SKIP_BREAKPOINT_VECTOR
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	329 cmplwi r4,__exception_program@L
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	330 bne 3f # is it the breakpoint vector?
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	331 addi r4,r4,0x100 # if so, leave it well alone
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	332 addi r3,r3,0x100
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	333 lwi r5,rom_vectors_end # r5 = rom end
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	334 b 1b # and do the rest of the copy
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	335 3:
7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	336 #endif // Skip copying the breakpoint vector
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	337 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	338
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	339 # clear BSS
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	340 .extern __bss_start
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	341 .extern __bss_end
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	342 lwi r3,__bss_start # r3 = start
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	343 lwi r4,__bss_end # r4 = end
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	344 li r0,0 # r0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	345 cmplw r3,r4 # skip if no bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	346 beq 2f
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	347
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	348 1: stw r0,0(r3) # store zero
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	349 addi r3,r3,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	350 cmplw r3,r4 # compare
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	351 blt 1b # loop if not yet done
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	352 2:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	353
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	354 # clear SBSS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	355 .extern __sbss_start
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	356 .extern __sbss_end
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	357 lwi r3,__sbss_start # r3 = start
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	358 lwi r4,__sbss_end # r4 = end
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	359 cmplw r3,r4 # skip if no sbss
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	360 beq 2f
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	361
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	362 1: stw r0,0(r3) # store zero
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	363 addi r3,r3,4 # increment by 1 word
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	364 cmplw r3,r4 # compare
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	365 blt 1b # loop if not yet done
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	366 2:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	367
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	368 # It is now safe to call C functions which may rely on initialized
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	369 # data.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	370
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	371 # Set up stack for calls to C code.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	372 subi sp,sp,12 # make space on stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	373 li r0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	374 stw r0,0(sp) # clear back chain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	375 stw r0,8(sp) # zero return pc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	376 stwu sp,-ppc_stack_frame_size(sp) # create new stack frame
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	377
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	378 # Initialize MMU.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	379 .extern hal_MMU_init
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	380 bl hal_MMU_init
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	381
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	382 # Enable MMU it so we can safely enable caches.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	383 lwi r3,CYG_MSR
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	384 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	385 mtmsr r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	386 sync
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	387
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	388 # Enable caches
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	389 .extern hal_enable_caches
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	390 bl hal_enable_caches
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	391
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	392 # call c++ constructors
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	393 .extern cyg_hal_invoke_constructors
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	394 bl cyg_hal_invoke_constructors
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	395
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	396 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	397 .extern initialize_stub
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	398 bl initialize_stub
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	399 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	400
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	401 .extern cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	402 bl cyg_start # call cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	403 9:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	404 b 9b # if we return, loop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	405
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	406 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	407 # This code handles the common part of all exception handlers.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	408 # It saves the machine state onto the stack and then calls
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	409 # a "C" routine to do the rest of the work. This work may result
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	410 # in thread switches, and changes to the saved state. When we return
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	411 # here the saved state is restored and execution is continued.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	412
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	413 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	414
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	415 .extern __default_exception_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	416 __default_exception_vsr:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	417
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	418 # We come here with all register containing their
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	419 # pre-exception values except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	420 # R3 = ls 16 bits of vector address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	421 # R4 = saved CR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	422 # R5 = saved LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	423 # LR = VSR address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	424 # SPRG1 = old R3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	425 # SPRG2 = old R4
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	426 # SPRG3 = old R5
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	427 # SRR0 = old PC
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	428 # SRR1 = old MSR and the exception cause (the POW state is lost!)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	429
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	430 subi r1,r1,ppc_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	431 # leave space for registers and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	432 # a safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	433
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	434 # First, save away some registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	435 stw r3,ppcreg_vector(r1) # stash vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	436 stw r4,ppcreg_cr(r1) # stash CR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	437 stw r5,ppcreg_lr(r1) # stash LR
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	438
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	439 # Enable MMU.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	440 lwi r3,CYG_MSR
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	441 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	442 mtmsr r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	443 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	444
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	445 mfspr r3,SPRG1 # save original R3
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	446 stw r3,ppcreg_regs+3*4(r1)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	447 mfspr r4,SPRG2 # save original R4
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	448 stw r4,ppcreg_regs+4*4(r1)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	449 mfspr r5,SPRG3 # save original R5
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	450 stw r5,ppcreg_regs+5*4(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	451
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	452 stw r0,ppcreg_regs(r1) # save R0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	453 stw r2,ppcreg_regs+2*4(r1) # save R2
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	454
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	455 mr r3,r1 # recreate original R1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	456 addi r3,r3,ppc_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	457 stw r3,ppcreg_regs+1*4(r1) # and save it in state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	458
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	459 # Save registers r6..r12/r31
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	460 .set _reg,6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	461 .rept MAX_SAVE_REG+1-6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	462 stw _reg,(ppcreg_regs+_reg*4)(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	463 .set _reg,_reg+1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	464 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	465
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	466 # Save registers used in vsr (r14+r15)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	467 stw r14,(ppcreg_regs+14*4)(r1)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	468 stw r15,(ppcreg_regs+15*4)(r1)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	469
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	470 # get remaining CPU registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	471 mfxer r3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	472 mfctr r5
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	473 mfdar r6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	474 mfdsisr r7
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	475 mfpvr r8
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	476 mfsrr0 r9
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	477 mfsrr1 r10
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	478
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	479 # and store them
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	480 stw r3,ppcreg_xer(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	481 stw r5,ppcreg_ctr(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	482 stw r6,ppcreg_dar(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	483 stw r7,ppcreg_dsisr(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	484 stw r8,ppcreg_pvr(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	485 stw r9,ppcreg_pc(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	486 stw r10,ppcreg_msr(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	487
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	488 # The entire CPU state is now stashed on the stack,
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	489 # call into C to do something with it.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	490
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	491 mr r3,sp # R3 = register dump
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	492
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	493 subi sp,sp,ppc_stack_frame_size # make a null frame
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 li r0,0 # R0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	496 stw r0,0(sp) # backchain = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	497 stw r0,8(sp) # return pc = 0
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 stwu sp,-ppc_stack_frame_size(sp) # create new stack frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	500 # where C code can save LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	501
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	502 lwi r5,restore_state # get return link
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	503 mtlr r5 # to link register
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	504
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	505 .extern cyg_hal_exception_handler
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	506 b cyg_hal_exception_handler # call C code, r3 = registers
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	507
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	508 # When the call returns it will go to restore_state below.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	509
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	510
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	511 ##--------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	512 ## The following macros are defined depending on whether the Interrupt
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	513 ## system is using isr tables or chaining, and depending on the interrupt
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	514 ## controller in the system.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	515
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	516 ## Note: CYG_ISR_TABLE_SIZE must match CYG_ISR_COUNT defined in hal_intr.h.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	517
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	518 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	519
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	520 ## First level decoding of MPC8xx SIU interrupt controller.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	521
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	522 #define CYG_ISR_TABLE_SIZE 59
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	523
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	524 # decode the interrupt
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	525 .macro decode_interrupt dreg,state
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	526 lwz \dreg,ppcreg_vector(\state) # retrieve vector number,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	527 rlwinm. \dreg,\dreg,22,31,31 # isolate bit 21
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	528 beq 0f # done if decrementer (vec 0)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	529 lwi \dreg,CYGARC_REG_IMM_SIVEC # if external, get SIU
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	530 lbz \dreg,0(\dreg) # vector.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	531 srwi \dreg,\dreg,2
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	532 addi \dreg,\dreg,1 # Skip decrementer vector
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	533 0: stw \dreg,ppcreg_vector(\state) # update vector in state frame.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	534 slwi \dreg,\dreg,2 # convert to byte offset.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	535 .endm
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	536
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	537 #else
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	538
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	539 ## This is the simple version. No interrupt controller, ppcreg_vector
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	540 ## is updated with the decoded interrupt vector. Isr tables/chaining
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	541 ## use same interrupt decoder.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	542 ## Bit 21 biffers between decrementer (0) and external (1).
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	543
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	544 #define CYG_ISR_TABLE_SIZE 2
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	545
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	546 # decode the interrupt
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	547 .macro decode_interrupt dreg,state
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	548 lwz \dreg,ppcreg_vector(\state) # retrieve vector number,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	549 rlwinm \dreg,\dreg,22,31,31 # isolate bit 21 and update
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	550 stw \dreg,ppcreg_vector(\state) # vector in state frame.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	551 slwi \dreg,\dreg,2 # convert to word offset.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	552 .endm
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	553
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	554 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	555
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	556 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	557 # Common interrupt handling code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	558
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	559 .extern __default_interrupt_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	560 __default_interrupt_vsr:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	561
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	562 # We come here with all register containing their
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	563 # pre-exception values except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	564 # R3 = ls 16 bits of vector address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	565 # R4 = saved CR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	566 # R5 = saved LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	567 # LR = VSR address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	568 # SPRG1 = old R3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	569 # SPRG2 = old R4
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	570 # SPRG3 = old R5
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	571 # SRR0 = old PC
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	572 # SRR1 = old MSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	573
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	574
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	575 subi r1,r1,ppc_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	576 # leave space for registers and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	577 # a safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	578
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	579 stw r3,ppcreg_vector(r1) # stash vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	580 stw r4,ppcreg_cr(r1) # stash CR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	581 stw r5,ppcreg_lr(r1) # stash LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	582
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	583 # Enable MMU.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	584 lwi r3,CYG_MSR
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	585 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	586 mtmsr r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	587 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	588
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	589 mfspr r3,SPRG1 # save original R3
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	590 stw r3,ppcreg_regs+3*4(r1)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	591 mfspr r4,SPRG2 # save original R4
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	592 stw r4,ppcreg_regs+4*4(r1)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	593 mfspr r5,SPRG3 # save original R5
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	594 stw r5,ppcreg_regs+5*4(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	595
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	596 stw r0,ppcreg_regs(r1) # save R0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	597 stw r2,ppcreg_regs+2*4(r1) # save R2
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	598
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	599 mr r3,r1 # recreate original R1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	600 addi r3,r3,ppc_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	601 stw r3,ppcreg_regs+1*4(r1) # and save it in state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	602
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	603 # Save registers r6..r12/r31
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	604 .set _reg,6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	605 .rept MAX_SAVE_REG+1-6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	606 stw _reg,(ppcreg_regs+_reg*4)(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	607 .set _reg,_reg+1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	608 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	609
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	610 # Save registers used in vsr (r14+r15)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	611 stw r14,(ppcreg_regs+14*4)(r1)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	612 stw r15,(ppcreg_regs+15*4)(r1)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	613
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	614 # get remaining CPU registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	615 mfxer r3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	616 mfctr r5
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	617 mfsrr0 r6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	618 mfsrr1 r7
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	619
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	620 # and store them
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	621 stw r3,ppcreg_xer(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	622 stw r5,ppcreg_ctr(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	623 stw r6,ppcreg_pc(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	624 stw r7,ppcreg_msr(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	625
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	626 # The entire CPU state is now stashed on the stack,
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	627 # increment the scheduler lock and call the ISR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	628 # for this vector.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	629
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	630 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	631 .extern cyg_scheduler_sched_lock
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	632 lwi r3,cyg_scheduler_sched_lock
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	633 lwz r4,0(r3)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	634 addi r4,r4,1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	635 stw r4,0(r3)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	636 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	637
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	638 mr r14,sp # r14 = register dump
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	639
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	640 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	641 lwi r3,__interrupt_stack # stack top
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	642 lwi r4,__interrupt_stack_base # stack base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	643 sub. r5,sp,r4 # sp - base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	644 blt 1f # if < 0 - not on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	645 sub. r5,r3,sp # top - sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	646 bgt 2f # if > 0 - already on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	647
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	648 1: mr sp,r3 # switch to istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	649
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	650 2: stwu r14,-4(sp) # save old SP on stack
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	651
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	652 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	653
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	654 subi sp,sp,ppc_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	655
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	656 li r0,0 # R0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	657 stw r0,0(sp) # backchain = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	658 stw r0,8(sp) # return pc = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	659
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	660 stwu sp,-ppc_stack_frame_size(sp) # create new stack frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	661 # where C code can save LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	662
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	663 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	664
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	665 lwi r3,0x0301 # r3 = type = INTR,RAISE
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	666 lwz r4,ppcreg_vector(r14) # arg1 = vector address
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	667 srwi r4,r4,8 # arg1 = vector number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	668 xor r5,r5,r5 # arg2 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	669 bl cyg_instrument # call instrument function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	670
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	671 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	672
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	673 decode_interrupt r15,r14 # get table index
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	674
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	675 #ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	676 .extern cyg_hal_gdb_isr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	677 lwz r3,ppcreg_pc(r14) # for serial receive irq.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	678 bl cyg_hal_gdb_isr # (arg1 is PC)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	679 cmpwi r3,0x0000 # Call ISR proper?
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	680 beq 2f # (r3 is 0 when skipping
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	681 # to avoid DSR call)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	682 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	683 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	684
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	685 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	686
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	687 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	688 # The CPM controller allows nested interrupts. However,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	689 # it sits on the back of the SIU controller which has no
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	690 # HW support for this. In effect, SW masking of lower
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	691 # priority IRQs in the SIU would be required for this to work.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	692 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	693
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	694 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	695
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	696 lwz r3,ppcreg_vector(r14) # retrieve decoded vector #
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	697
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	698 lwi r6,hal_interrupt_handlers # get interrupt handler table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	699 lwzx r6,r6,r15 # load routine pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	700
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	701 lwi r4,hal_interrupt_data # get interrupt data table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	702 lwzx r4,r4,r15 # load data pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	703 # R4 = data argument
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	704
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	705 mtctr r6 # put isr address in ctr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	706
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	707 bctrl # branch to ctr reg and link
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	708
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	709 #ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	710 # If interrupt was caused by GDB, the ISR call above
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	711 # is skipped by jumping here.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	712 2:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	713 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	714
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	715 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	716
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	717 # If we are returning from the last nested interrupt, move back
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	718 # to the thread stack. interrupt_end() must be called on the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	719 # thread stack since it potentially causes a context switch.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	720 # Since we have arranged for the top of stack location to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	721 # 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	722 # and put it in SP.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	723
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	724
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	725 lwz sp,ppc_stack_frame_size2(sp) # sp = sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	726
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	727 subi sp,sp,ppc_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	728
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	729 li r0,0 # R0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	730 stw r0,0(sp) # backchain = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	731 stw r0,8(sp) # return pc = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	732
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	733 stwu sp,-ppc_stack_frame_size(sp) # create new stack frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	734 # where C code can save LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	735 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	736
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	737 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	738
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	739 # We only need to call _interrupt_end() when there is a kernel
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	740 # present to do any tidying up.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	741
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	742 # on return r3 bit 1 will indicate whether a DSR is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	743 # to be posted. Pass this together with a pointer to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	744 # the interrupt object we have just used to the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	745 # interrupt tidy up routine.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	746
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	747 # Note that r14 and r15 are defined to be preserved across
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	748 # calls by the calling convention, so they still contain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	749 # the register dump and the vector number respectively.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	750
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	751 # Note: The instructions restoring the msr mask out the POW bit.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	752 # When eCos gets power management aware, this bit will have to be
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	753 # set to the correct state rather than just cleared.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	754
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	755 lwi r4,hal_interrupt_objects # get interrupt object table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	756 lwzx r4,r4,r15 # load object pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	757
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	758 lwz r6,ppcreg_msr(r14) # restore msr, including
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	759 lis r5,0xfffe # interrupt enable.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	760 andc r6,r6,r5 # mask out reserved bits
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	761 sync # (and POW!)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	762 mtmsr r6
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	763 sync
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	764
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	765 mr r5,r14 # arg3 = saved register dump
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	766
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	767 .extern interrupt_end
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	768 bl interrupt_end # call into C to finish off
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	769 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	770
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	771 restore_state:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	772 # All done, restore CPU state and continue
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	773
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	774 addi sp,sp,ppc_stack_frame_size*2 # retrieve CPU state pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	775
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	776 # get sprs we want to restore
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	777 lwz r3,ppcreg_cr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	778 lwz r4,ppcreg_pc(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	779 lwz r5,ppcreg_msr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	780 lwz r6,ppcreg_xer(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	781 lwz r7,ppcreg_lr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	782 lwz r8,ppcreg_ctr(sp)
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
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	785 # stuff some of them into the CPU
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	786 mtxer r6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	787 mtlr r7
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	788 mtctr r8
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	789
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	790 # restore R0 and R2
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	791 lwz r0,ppcreg_regs(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	792 lwz r2,ppcreg_regs+2*4(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	793
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	794 # Restore registers used in vsr (r14+r15)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	795 lwz r14,(ppcreg_regs+14*4)(r1)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	796 lwz r15,(ppcreg_regs+15*4)(r1)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	797
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	798 # restore registers r6..r12/r31
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	799 .set _reg,6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	800 .rept MAX_SAVE_REG+1-6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	801 lwz _reg,(ppcreg_regs+_reg*4)(r1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	802 .set _reg,_reg+1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	803 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	804
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	805 # Here all the registers are loaded except
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	806 # r1 = ppcregs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	807 # r3 = ccr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	808 # r4 = srr0 = pc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	809 # r5 = srr1 = msr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	810
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	811 # We have to disable interrupts while srr0 and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	812 # srr1 are loaded, since another interrupt will
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	813 # destroy them.
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 mtcr r3 # set ccr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	816
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	817 lwi r3,CYG_MSR # do rest with ints disabled
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	818 sync
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	819 mtmsr r3
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	820 sync
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	821
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	822 mtsrr0 r4 # load old pc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	823 mtsrr1 r5 # load old msr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	824
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	825 lwz r3,ppcreg_regs+3*4(r1) # load r3 value
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	826 lwz r4,ppcreg_regs+4*4(r1) # load r4 value
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	827 lwz r5,ppcreg_regs+5*4(r1) # load r5 value
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	828 lwz r1,ppcreg_regs+1*4(r1) # restore r1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	829
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	830 sync # settle things down
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	831 isync
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	832 rfi # and return
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	833
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	834
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	835
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	836 ##-----------------------------------------------------------------------------
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	837 ## Execute pending DSRs on the interrupt stack with interrupts enabled.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	838 ## Note: this can only be called from code running on a thread stack
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	839
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	840 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	841 .extern cyg_interrupt_call_pending_DSRs
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	842
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	843 FUNC_START(hal_interrupt_stack_call_pending_DSRs)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	844 # Disable interrupts
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	845 mfmsr r4
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	846 lis r3,0
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	847 ori r3,r3,0x8000
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	848 andc r5,r4,r3
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	849 mtmsr r5
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	850
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	851 # Change to interrupt stack
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	852 mr r3,sp
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	853 lwi sp,__interrupt_stack
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	854 stwu r3,-4(sp) # store old stackptr on stack
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	855 mflr r3
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	856 stwu r3,-4(sp) # store lr on stack
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	857 stwu r4,-4(sp) # store msr values on stack
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	858 stwu r5,-4(sp)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	859
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	860 # Set up stack for calls to C code.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	861 subi sp,sp,12 # make space on stack
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	862 li r0,0
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	863 stw r0,0(sp) # clear back chain
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	864 stw r0,8(sp) # zero return pc
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	865 stwu sp,-ppc_stack_frame_size(sp) # create new stack frame
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	866
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	867 # Restore interrupt state
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	868 mtmsr r4
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	869
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	870 # Call into kernel which will execute DSRs
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	871 bl cyg_interrupt_call_pending_DSRs
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	872
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	873 # Unwind stack and get msr values
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	874 lwzu r5,12+ppc_stack_frame_size(sp)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	875 lwz r4,4(sp)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	876 lwz r3,8(sp)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	877 mtlr r3
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	878
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	879 # Disable interrupts
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	880 mtmsr r5
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	881
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	882 # Restore original stack pointer, original interrupt state and return
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	883 lwz sp,12(sp)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	884 mtmsr r4
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	885
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	886 blr
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	887 #endif
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	888
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	889 #---------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	890 # Code for putting the CPU in a post-reset state; disabling MMU and caches.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	891 _init_CPU:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	892 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	893 lwi r3,CYGARC_REG_DC_CMD_CD
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	894 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	895 mtspr CYGARC_REG_DC_CST,r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	896 lwi r3,CYGARC_REG_IC_CMD_CD
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	897 isync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	898 mtspr CYGARC_REG_IC_CST,r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	899 isync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	900 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	901
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	902 # Set up MSR (disable MMU for now)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	903 lwi r3,(CYG_MSR & ~(MSR_IR \| MSR_DR))
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	904 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	905 mtmsr r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	906 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	907 blr
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	908
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	909 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	910 # This table contains a VSR pointer for each defined exception.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	911 # All of these except 5 and 9 point to the __default_exception_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	912 # above, 5 and 9 point to the __default_interrupt_vsr. Entries in
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	913 # this table may be changed using Cyg_Interrupt::set_vsr().
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	914
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	915 .data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	916
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	917 .globl hal_vsr_table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	918 hal_vsr_table:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	919 # Architecture defined vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	920 .long __default_exception_vsr # reserved
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	921 .long __default_exception_vsr # system reset
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	922 .long __default_exception_vsr # machine check
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	923 .long __default_exception_vsr # data storage
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	924 .long __default_exception_vsr # instruction storage
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	925
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	926 .long __default_interrupt_vsr # external interrupt
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	927
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	928 .long __default_exception_vsr # alignment
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	929 .long __default_exception_vsr # program
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	930 .long __default_exception_vsr # floating point unavailable
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	931
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	932 .long __default_interrupt_vsr # decrementer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	933
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	934 .long __default_exception_vsr # reserved 0x0a00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	935 .long __default_exception_vsr # reserved 0x0b00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	936 .long __default_exception_vsr # system call
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	937 .long __default_exception_vsr # trace
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	938 .long __default_exception_vsr # floating point assist
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	939 .long __default_exception_vsr # reserved 0x0f00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	940
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	941 #ifdef CYG_HAL_POWERPC_MPC8xx
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	942
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	943 # Implementation defined vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	944 .long __default_exception_vsr # software emulation
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	945 .long __default_exception_vsr # instruction TLB miss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	946 .long __default_exception_vsr # data TLB miss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	947 .long __default_exception_vsr # instruction TLB error
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	948 .long __default_exception_vsr # data TLB error
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	949 .long __default_exception_vsr # reserved 0x1500
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	950 .long __default_exception_vsr # reserved 0x1600
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	951 .long __default_exception_vsr # reserved 0x1700
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	952 .long __default_exception_vsr # reserved 0x1800
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	953 .long __default_exception_vsr # reserved 0x1900
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	954 .long __default_exception_vsr # reserved 0x1a00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	955 .long __default_exception_vsr # reserved 0x1b00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	956 .long __default_exception_vsr # data breakpoint
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	957 .long __default_exception_vsr # instruction breakpoint
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	958 .long __default_exception_vsr # peripheral breakpoint
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	959 .long __default_exception_vsr # non maskable development port
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	960 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	961
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	962 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	963 # Interrupt vector tables.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	964 # These tables contain the isr, data and object pointers used to deliver
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	965 # interrupts to user code.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	966
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	967 #if (CYG_ISR_TABLE_SIZE > 2)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	968 .data
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	969 #else
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	970 .section ".sdata","aw"
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	971 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	972
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	973 .extern hal_default_decrementer_isr
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	974 .extern hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	975
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	976 .globl hal_interrupt_handlers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	977 hal_interrupt_handlers:
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	978 .long hal_default_decrementer_isr
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	979 .rept CYG_ISR_TABLE_SIZE-1
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	980 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	981 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	982
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	983 .globl hal_interrupt_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	984 hal_interrupt_data:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	985 .rept CYG_ISR_TABLE_SIZE
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	986 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	987 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	988
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	989 .globl hal_interrupt_objects
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	990 hal_interrupt_objects:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	991 .rept CYG_ISR_TABLE_SIZE
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	992 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	993 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	994
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	995 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	996 ## Temporary interrupt stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	997
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	998 .section ".bss"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	999
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1000 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	1001 .global cyg_interrupt_stack_base
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	1002 cyg_interrupt_stack_base:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1003 __interrupt_stack_base:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1004 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1005 .byte 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1006 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1007 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	1008 .global cyg_interrupt_stack
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	1009 cyg_interrupt_stack:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1010 __interrupt_stack:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1011
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1012 .long 0,0,0,0,0,0,0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1013
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	1014 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1015 # end of vectors.S

Mercurial > flash_v2

annotate packages/hal/powerpc/arch/current/src/vectors.S @ 18:7253dcc42a09 ecos-sw-1999-06-25