Mercurial > flash_v2

annotate packages/hal/sh/arch/current/src/vectors.S @ 112:02ea4320376c ecos-sw-2000-07-21

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Merge from eCos master repository on 2000-07-21-21:01:39-BST
author jlarmour
date Fri, 21 Jul 2000 21:34:11 +0000
parents 7f461c3a372c
children 6ed91473a1cd
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1 ##==========================================================================
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2 ##
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3 ## vectors.S
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4 ##
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5 ## SH exception vectors
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6 ##
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7 ##==========================================================================
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8 #####COPYRIGHTBEGIN####
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9 #
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10 # -------------------------------------------
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11 # The contents of this file are subject to the Red Hat eCos Public License
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12 # Version 1.1 (the "License"); you may not use this file except in
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13 # compliance with the License. You may obtain a copy of the License at
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14 # http://www.redhat.com/
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15 #
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16 # Software distributed under the License is distributed on an "AS IS"
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17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 # License for the specific language governing rights and limitations under
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19 # the License.
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20 #
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21 # The Original Code is eCos - Embedded Configurable Operating System,
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22 # released September 30, 1998.
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23 #
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24 # The Initial Developer of the Original Code is Red Hat.
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25 # Portions created by Red Hat are
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26 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 # All Rights Reserved.
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28 # -------------------------------------------
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29 #
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30 #####COPYRIGHTEND####
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31 ##==========================================================================
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32 #######DESCRIPTIONBEGIN####
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33 ##
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34 ## Author(s): jskov
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35 ## Contributors: jskov, gthomas
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36 ## Date: 1999-05-01
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37 ## Purpose: SH exception vectors
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38 ## Description: This file defines the code placed into the exception
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39 ## vectors. It also contains the first level default VSRs
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40 ## that save and restore state for both exceptions and
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41 ## interrupts.
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42 ## Notes: The SH architecture files are still more SH3 specific than
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43 ## architecture neutral, hence the sub-variant configury.
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44 ######DESCRIPTIONEND####
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45 ##
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46 ##==========================================================================
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47
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48 #include <pkgconf/hal.h>
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49 #include <pkgconf/hal_sh.h>
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50
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51 #ifdef CYGPKG_KERNEL
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52 #include <pkgconf/kernel.h> // CYGPKG_KERNEL_INSTRUMENT
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53 #endif
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54
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55 #include <cyg/hal/arch.inc>
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56 #include <cyg/hal/sh_regs.h>
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57 #include <cyg/hal/sh_offsets.inc>
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58
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59 #include <cyg/hal/hal_intr.h>
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60
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61
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62 #===========================================================================
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63
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64 .file "vectors.S"
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65
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66 #undef __DEBUG
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67
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68 #===========================================================================
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69 # SR initialization value
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70 # zero all bits except:
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71 # MD = Processor operation mode field (privileged mode)
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72 # I0-3 = Mask out all interrupts but NMI.
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73 #
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74 # When saving or restoring the state of an exception or interrupt, the bit
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75 # CYGARC_REG_SR_RB is also set, switching the register bank. When this bit
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76 # is set, interrupts must be disabled.
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77 #
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78 # Note: We could also use the BL bit to prevent interrupts, but that would
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79 # also prevent the use of breakpoints.
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80
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81 #define CYG_SR (CYGARC_REG_SR_MD|CYGARC_REG_SR_IMASK)
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82 #define CYG_SR_BANK1 (CYGARC_REG_SR_MD|CYGARC_REG_SR_IMASK|CYGARC_REG_SR_RB)
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83
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84 #===========================================================================
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85 # Start by defining the exceptions vectors.
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86 .section ".vectors","ax"
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87
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88 # reset 0xa0000000
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89 # other exceptions VBR+0x100
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90 # tlb miss VBR+0x400
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91 # interrupts VBR+0x600
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92
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93
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94 #===========================================================================
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95 # Reset code must be PC relative so it can be executed out of the shadow
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96 # area during startup. Not until after hal_hardware_init can the system
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97 # be expected to provide the proper address space (at that time we
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98 # jump to the VMA base of the code).
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99
105
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100 .org 0x000
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101 .globl __reset;
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102 __reset:
105
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103 mov.l $__reset_platform,r0
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104 jmp @r0
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105 nop
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106
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107 # Note: this is the unmapped, shadow address of the start of code
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108 # Sadly, it is too far to just branch to.
107
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109 .align 2
105
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110 $__reset_platform:
107
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111 #ifdef CYG_HAL_STARTUP_RAM
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112 .long __reset_platform
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113 #else
112
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114 .long __reset_platform+0x20000000 // Uncached "shadow" address
107
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115 #endif
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116
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117 #---------------------------------------------------------------------------
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118 # Exception entry
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119
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120 .org 0x100
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121 __exception:
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122
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123 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
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124 mov #1,r7
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125 #endif
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126
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127 mov #CYGARC_REG_EXCEVT,r1
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128 mov.l @r1,r1
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129 shlr2 r1
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130 shlr r1 ! divide cause by 0x08
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131 mov.l $_hal_vsr_table,r0
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132 mov.l @(r0,r1),r1
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133 jmp @r1
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134 nop
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135
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136 .align 2
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137 $_hal_vsr_table:
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138 .long _hal_vsr_table
76
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139
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140 #---------------------------------------------------------------------------
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141 # This code handles the common part of all exception handlers.
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142 # It saves the machine state onto the stack and then calls
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143 # a "C" routine to do the rest of the work. This work may result
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144 # in thread switches, and changes to the saved state. When we return
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145 # here the saved state is restored and execution is continued.
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146
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147 .globl _cyg_hal_default_exception_vsr
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148 _cyg_hal_default_exception_vsr:
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149
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150 # We come here with all register containing their
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151 # pre-exception values except:
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152 # r0_b-r7_b = saved r0-r7
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153 # r7 = vector #
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154 # spc = saved pc
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155 # ssr = saved sr
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156
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157 # Save away some registers
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158 mov r15,r1 ! entry sp
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159
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160 #ifdef __DEBUG
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161 mov.l $exc_state_marker,r0
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162 mov.l r0,@-r15
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163 mov #CYGARC_REG_EXCEVT,r0
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164 mov.l @r0,r0
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165 mov.l r0,@-r15
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166 #endif
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167
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168 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
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169 add #-12,r15 ! Space for cause, gbr, and vbr
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170 #else
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171 add #-4,r15 ! Space for cause
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172
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173 stc gbr,r0 ! GBR
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174 mov.l r0,@-r15
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175 stc vbr,r0 ! VBR
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176 mov.l r0,@-r15
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177 #endif
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178
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179 stc spc,r0
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180 mov.l r0,@-r15 ! PC
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181 stc ssr,r0
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182 mov.l r0,@-r15 ! SR
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183
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184 sts.l pr,@-r15 ! PR
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185 sts.l mach,@-r15 ! mach
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186 sts.l macl,@-r15 ! macl
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187
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188 mov.l r1,@-r15 ! entry sp
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189 mov.l r14,@-r15 ! r14-r0
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190 mov.l r13,@-r15
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191 mov.l r12,@-r15
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192 mov.l r11,@-r15
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193 mov.l r10,@-r15
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194 mov.l r9,@-r15
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195 mov.l r8,@-r15
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196 stc.l r7_bank,@-r15
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197 stc.l r6_bank,@-r15
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198 stc.l r5_bank,@-r15
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199 stc.l r4_bank,@-r15
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200 stc.l r3_bank,@-r15
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201 stc.l r2_bank,@-r15
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202 stc.l r1_bank,@-r15
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203 stc.l r0_bank,@-r15
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204
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205 # After setting the SR it will be possible to use breakpoints.
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206 mov.l $nCYG_SR1,r1
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207 ldc r1,sr
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208 # ------------------------------------------------------------
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209 # Register bank has changed now.
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210
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211 #ifdef __DEBUG
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212 # It is safe to use breakpoints below this point.
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213 .globl _cyg_hal_default_exception_vsr_bp_safe
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214 _cyg_hal_default_exception_vsr_bp_safe:
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215 #endif
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216 mov #CYGARC_REG_EXCEVT,r0
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217 mov.l @r0,r4
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218 mov #-5,r0 ! divide cause by 0x20
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219 shld r0,r4
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220 mov #CYGARC_SHREG_EVENT,r0
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221 mov.l r4,@(r0,r15) ! store decoded vector number back
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222
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223 # The entire CPU state is now stashed on the stack,
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224 # call into C to do something with it.
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225
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226 mov r15,r4 ! R4 = register dump
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227
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228 mov.l $restore_state,r0 ! get return link
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229 lds r0,pr ! to procedure register
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230
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231 mov.l $_cyg_hal_exception_handler,r0
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232 jmp @r0 ! call C code, r4 = registers
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233 nop
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234
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235 .align 2
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236 $restore_state:
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237 .long restore_state
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238 $nCYG_SR1:
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239 .long CYG_SR
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240
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241 #ifdef __DEBUG
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242 $exc_state_marker:
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243 .long 0x77777770
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244 #endif
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245
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246 .extern _cyg_hal_exception_handler
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247
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248 $_cyg_hal_exception_handler:
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249 .long _cyg_hal_exception_handler
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250
82
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251 #---------------------------------------------------------------------------
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252 # TLB miss entry
76
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253
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254 .org 0x400
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255 __tlb_miss:
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256 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
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257 mov #2,r7
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258 #endif
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259
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260 mov #CYGARC_REG_EXCEVT,r1
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261 mov.l @r1,r1
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262 shlr2 r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
263 shlr r1 ! divide cause by 0x08
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
264 mov.l $_hal_vsr_table2,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
265 mov.l @(r0,r1),r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
266 jmp @r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
267 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
268
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
269 .align 2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
270 $_hal_vsr_table2:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
271 .long _hal_vsr_table
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
272
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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diff changeset
273 #---------------------------------------------------------------------------
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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diff changeset
274 # Interrupt entry
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
275
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
276 .org 0x600
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
277 __interrupt:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
278
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
279 #ifdef CYGHWR_HAL_SH_HANDLE_SPURIOUS_INTERRUPTS
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
280 # A spurious interrupt with INTEVT=0 may be caused by
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
281 # clearing of BL. Those interrupts need to be ignored.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
282 mov #CYGARC_REG_INTEVT,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
283 mov.l @r0,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
284 cmp/eq #0,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
285 bf 1f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
286 rte
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
287 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
288 1:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
289 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
290
84
489eb5632bc3 Merge from eCos master repository on 2000-04-28-18:44:39-BST
jlarmour
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diff changeset
291
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
292 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
293 mov #3,r7
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
294 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
295
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
296 mov.l $_hal_vsr_table_int,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
297 mov.l @r1,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
298 jmp @r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
299 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
300
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
301 .align 2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
302 $_hal_vsr_table_int:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
303 .long _hal_vsr_table+CYGNUM_HAL_VECTOR_INTERRUPT*4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
304
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
305 #---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
306 # Common interrupt handling code.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
307
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
308 .globl _cyg_hal_default_interrupt_vsr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
309 _cyg_hal_default_interrupt_vsr:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
310
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
311 # We come here with all register containing their
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
312 # pre-exception values except:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
313 # r0_b-r7_b = saved r0-r7
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
314 # r7 = vector #
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
315 # spc = saved pc
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
316 # ssr = saved sr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
317
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
318 # Save away some registers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
319 mov r15,r1 ! entry sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
320
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
321 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
322 add #-12,r15 ! Space for cause, gbr, and vbr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
323 #else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
324 add #-4,r15 ! Space for cause
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
325
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
326 stc gbr,r0 ! GBR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
327 mov.l r0,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
328 stc vbr,r0 ! VBR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
329 mov.l r0,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
330 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
331
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
332 stc spc,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
333 mov.l r0,@-r15 ! PC
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
334 stc ssr,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
335 mov.l r0,@-r15 ! SR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
336
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
337 sts.l pr,@-r15 ! PR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
338 sts.l mach,@-r15 ! mach
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
339 sts.l macl,@-r15 ! macl
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
340
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
341 mov.l r1,@-r15 ! entry sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
342 mov.l r14,@-r15 ! r14-r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
343 mov.l r13,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
344 mov.l r12,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
345 mov.l r11,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
346 mov.l r10,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
347 mov.l r9,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
348 mov.l r8,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
349 stc.l r7_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
350 stc.l r6_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
351 stc.l r5_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
352 stc.l r4_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
353 stc.l r3_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
354 stc.l r2_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
355 stc.l r1_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
356 stc.l r0_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
357
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
358 # After setting the SR it will be possible to use breakpoints.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
359 mov.l $nCYG_SR2,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
360 ldc r1,sr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
361 # ------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
362 # Register bank has changed now.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
363
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
364 #ifdef __DEBUG
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
365 # It is safe to use breakpoints below this point.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
366 .globl _cyg_hal_default_interrupt_vsr_bp_safe
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
367 _cyg_hal_default_interrupt_vsr_bp_safe:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
368 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
369
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
370 # The entire CPU state is now stashed on the stack,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
371 # call into C to do something with it.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
372
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
373 # The entire CPU state is now stashed on the stack,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
374 # increment the scheduler lock and call the ISR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
375 # for this vector.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
376
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
377 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
378 mov.l $cyg_scheduler_sched_lock,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
379 mov.l @r0,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
380 add #1,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
381 mov.l r1,@r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
382 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
383
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
384 mov r15,r8 ! R8 = register dump
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
385
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
386 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
387
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
388 mov.l $__interrupt_stack_base,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
389 mov.l $__interrupt_stack,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
390 cmp/hi r15,r0 ! if r0 > r15 or
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
391 bt 2f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
392 cmp/hi r1,r15 ! if r15 > r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
393 bf 1f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
394 2: mov r1,r15 ! change to supervisor stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
395 1: mov.l r8,@-r15 ! save old stack pointer
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
396
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
397 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
398
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
399 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
400 mov.l $n0301,r4 ! arg0 = type = INTR,RAISE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
401 mov r7,r5 ! arg1 = vector number
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
402 mov.l $_cyg_instrument,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
403 mov #0,r6 ! arg2 = 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
404 jsr @r0 ! call instrument function
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
405 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
406 bra 1f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
407 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
408
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
409 .align 2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
410 $n0301:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
411 .long 0x0301
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
412 $_cyg_instrument:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
413 .extern _cyg_instrument
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
414 .long _cyg_instrument
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
415 1:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
416 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
417
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
418 # Decode the interrupt vector
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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parents: 80
diff changeset
419 #ifdef CYGARC_SH_MOD_INTC_V2
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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parents: 80
diff changeset
420 mov.l $nCYGARC_REG_INTEVT2,r0
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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parents: 80
diff changeset
421 #else
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
422 mov #CYGARC_REG_INTEVT,r0
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 80
diff changeset
423 #endif
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
424 mov.l @r0,r4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
425 mov #-5,r0 ! divide cause by 0x20
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
426 shld r0,r4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
427 add #-14,r4 ! adjust so NMI becomes 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
428 mov #CYGARC_SHREG_EVENT,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
429 mov.l r4,@(r0,r8) ! store decoded vector number back
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
430 ! to saved state.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
431
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
432 // Find ISR index.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
433 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
434 #define CYG_ISR_TABLE_SIZE 1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
435 mov #0,r9 ! only one ISR in the table
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
436 #else // CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
437 #define CYG_ISR_TABLE_SIZE CYGNUM_HAL_ISR_COUNT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
438 mov r4,r9
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
439 shll2 r9 ! get from vector number to ISR index
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
440 #endif // CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
441
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
442
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
443 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
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parents: 101
diff changeset
444 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
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parents: 101
diff changeset
445 # If we are supporting Ctrl-C interrupts from GDB, we must squirrel
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
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parents: 101
diff changeset
446 # away a pointer to the save interrupt state here so that we can
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
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parents: 101
diff changeset
447 # plant a breakpoint at some later time.
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parents: 101
diff changeset
448
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diff changeset
449 mov.l $_hal_saved_interrupt_state,r1
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
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parents: 101
diff changeset
450 mov.l r8,@r1
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
451 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
452
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
453 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
454
101
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST
jlarmour
parents: 99
diff changeset
455 #if defined(CYGARC_SH_SOFTWARE_IP_UPDATE)
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
456 # The interrupt mask bits in the SR are not updated by the
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
457 # CPU. Proper nested operation requires the level to be
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
458 # found and put in the SR.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
459
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
460 # R4 contains the vector number:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
461 # CYGNUM_HAL_INTERRUPT_NMI:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
462 # Ix = 15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
463 # CYGNUM_HAL_INTERRUPT_LVL0-CYGNUM_HAL_INTERRUPT_LVL14:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
464 # Ix = 15-(CYGNUM_HAL_INTERRUPT_LVL0-R4)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
465 # IRA sources:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
466 # Get level from IRA
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
467 # IRB sources:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
468 # Get level from IRB
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
469
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
470 # However, doing mutiple checks and branches here is not smart.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
471 # Instead rely on alternative implementation where all programmed
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
472 # priorities are also kept in a table.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
473
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
474 mov.l $cyg_hal_ILVL_table,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
475 mov.b @(r0,r4),r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
476 shll2 r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
477 shll2 r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
478 mov.l $unmasked_SR,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
479 or r0,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
480 ldc r1,sr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
481 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
482
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
483 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
484
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
485 mov r9,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
486 mov.l $_hal_interrupt_handlers,r1 ! get interrupt handler
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
487 mov.l @(r0,r1),r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
488
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
489 mov.l $_hal_interrupt_data,r5 ! get interrupt data
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
490 mov.l @(r0,r5),r5
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
491
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
492 jsr @r1 ! r4=vector, r5=data
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
493 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
494
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
495 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
496
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
497 # If we are returning from the last nested interrupt, move back
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
498 # to the thread stack. interrupt_end() must be called on the
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
499 # thread stack since it potentially causes a context switch.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
500 # Since we have arranged for the top of stack location to
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
501 # contain the sp we need to go back to here, just pop it off
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
502 # and put it in SP.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
503
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
504 mov.l @r15,r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
505 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
506
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
507 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
508
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
509 # We only need to call _interrupt_end() when there is a kernel
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
510 # present to do any tidying up.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
511
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
512 # on return r0 bit 1 will indicate whether a DSR is
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
513 # to be posted. Pass this together with a pointer to
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
514 # the interrupt object we have just used to the
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
515 # interrupt tidy up routine.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
516 mov r0,r4 ! arg1 = isr_ret
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
517
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
518 # Note that r8 and r9 are defined to be preserved across
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
519 # calls by the calling convention, so they still contain
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
520 # the register dump and the vector table index respectively.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
521
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
522 mov.l $_hal_interrupt_objects,r0 ! get interrupt object table
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
523 mov.l @(r0,r9),r5 ! arg2 = interrupt object
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
524 mov.l $_interrupt_end,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
525 mov r8,r6 ! arg3 = saved register dump
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
526 jsr @r0 ! call into C to finish off
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
527 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
528 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
529
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
530 restore_state:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
531 # All done, restore CPU state and continue
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
532
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
533 # Disable interrupts and switch register bank during the restore
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
534 # operation
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
535 mov.l $nCYG_SR_BANK1,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
536 ldc r1,sr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
537 # ------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
538 # Register bank has changed now.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
539
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
540 #
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
541 # Single step debugging becomes impossible after this point!
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
542 #
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
543
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
544 mov r15,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
545 ldc.l @r0+,r0_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
546 ldc.l @r0+,r1_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
547 ldc.l @r0+,r2_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
548 ldc.l @r0+,r3_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
549 ldc.l @r0+,r4_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
550 ldc.l @r0+,r5_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
551 ldc.l @r0+,r6_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
552 ldc.l @r0+,r7_bank
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
553 mov.l @r0+,r8
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
554 mov.l @r0+,r9
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
555 mov.l @r0+,r10
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
556 mov.l @r0+,r11
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
557 mov.l @r0+,r12
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
558 mov.l @r0+,r13
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
559 mov.l @r0+,r14
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
560 mov.l @r0+,r15 ! return SP
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
561
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
562 lds.l @r0+,macl ! macl
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
563 lds.l @r0+,mach ! mach
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
564 lds.l @r0+,pr ! PR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
565
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
566 mov.l @r0+,r2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
567 ldc r2,ssr ! return SR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
568 mov.l @r0+,r2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
569 ldc r2,spc ! return PC
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
570
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
571 #ifndef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
572 mov.l @r0+,r2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
573 ldc r2,vbr ! return VBR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
574 mov.l @r0+,r2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
575 ldc r2,gbr ! return GBR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
576 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
577
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
578 rte
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
579 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
580
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
581
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
582 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
583 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
584 ##-----------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
585 ## Execute pending DSRs on the interrupt stack with interrupts enabled.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
586 ## Note: this can only be called from code running on a thread stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
587 .globl _hal_interrupt_stack_call_pending_DSRs
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
588 _hal_interrupt_stack_call_pending_DSRs:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
589 # Change to interrupt stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
590 mov r15,r2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
591 mov.l $__interrupt_stack,r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
592
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
593 mov.l r2,@-r15 ! save old stack pointer
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
594 sts.l pr,@-r15 ! save pr on stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
595 stc sr,r3
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
596 mov.l r3,@-r15 ! save sr on stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
597
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
598 # enable interrupts
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
599 hal_cpu_int_enable r0,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
600
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
601 # Call into kernel which will execute DSRs
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
602 mov.l $_cyg_interrupt_call_pending_DSRs,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
603 jsr @r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
604 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
605
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
606 # Get old sr, pr, and stack values
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
607 mov.l @r15+,r3 ! get old sr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
608 lds.l @r15+,pr ! get old pr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
609 mov.l @r15+,r15 ! get old stack pointer
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
610
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
611 # Restore SR interrupt state
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
612 hal_cpu_int_merge r3,r0,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
613 rts
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
614 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
615
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
616 #endif // CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
617 #endif // CYGFUN_HAL_COMMON_KERNEL_SUPPORT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
618
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
619 .align 2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
620 #ifdef __DEBUG
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
621 $int_state_marker:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
622 .long 0x77777771
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
623 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
624
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
625 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
626 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
627 .extern _hal_saved_interrupt_state
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
628 $_hal_saved_interrupt_state:
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
629 .long _hal_saved_interrupt_state
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
630 #endif
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
631
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
632 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
633 $__interrupt_stack:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
634 .long __interrupt_stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
635 $__interrupt_stack_base:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
636 .long __interrupt_stack_base
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
637 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
638 $nCYG_SR2:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
639 .long CYG_SR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
640 $nCYG_SR_BANK1:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
641 .long CYG_SR_BANK1
99
97d9d85b42c0 Merge from eCos master repository on 2000-06-07-14:25:36-BST
jlarmour
parents: 84
diff changeset
642 #ifdef CYGARC_SH_MOD_INTC_V2
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 80
diff changeset
643 $nCYGARC_REG_INTEVT2:
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 80
diff changeset
644 .long CYGARC_REG_INTEVT2
99
97d9d85b42c0 Merge from eCos master repository on 2000-06-07-14:25:36-BST
jlarmour
parents: 84
diff changeset
645 #endif
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
646 $_hal_interrupt_handlers:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
647 .long _hal_interrupt_handlers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
648 $_hal_interrupt_data:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
649 .long _hal_interrupt_data
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parents:
diff changeset
650 $_hal_interrupt_objects:
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diff changeset
651 .long _hal_interrupt_objects
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diff changeset
652
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diff changeset
653 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
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654 $cyg_hal_ILVL_table:
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diff changeset
655 .long _cyg_hal_ILVL_table
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diff changeset
656 $unmasked_SR:
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parents:
diff changeset
657 .long (CYG_SR & ~CYGARC_REG_SR_IMASK)
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diff changeset
658 #endif // CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
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diff changeset
659
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parents:
diff changeset
660
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
661 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
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662 .extern _cyg_scheduler_sched_lock
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diff changeset
663 .extern _interrupt_end
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parents:
diff changeset
664 .extern _cyg_interrupt_call_pending_DSRs
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parents:
diff changeset
665
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666 $_cyg_interrupt_call_pending_DSRs:
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parents:
diff changeset
667 .long _cyg_interrupt_call_pending_DSRs
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
668 $cyg_scheduler_sched_lock:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
669 .long cyg_scheduler_sched_lock
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
670 $_interrupt_end:
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diff changeset
671 .long _interrupt_end
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
672 #endif
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diff changeset
673
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674 #---------------------------------------------------------------------------
105
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diff changeset
675 # Platform initialization (reset)
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diff changeset
676 __reset_platform:
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diff changeset
677 # Initialize CPU
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diff changeset
678 mov.l $nCYG_SR,r1 ! Put CPU in a well-known state
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diff changeset
679 ldc r1,sr
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diff changeset
680 mov #0,r0
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diff changeset
681 mov #CYGARC_REG_CCR,r1 ! Disable cache
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diff changeset
682 mov.l r0,@r1
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diff changeset
683 mov #CYGARC_REG_MMUCR,r1 ! Disable MMU
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diff changeset
684 mov.l r0,@r1
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diff changeset
685 mov #CYGARC_REG_BBRA,r1 ! Disable UBC Channel A
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diff changeset
686 mov.w r0,@r1
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diff changeset
687 mov #CYGARC_REG_BBRB,r1 ! Disable UBC Channel B
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diff changeset
688 mov.w r0,@r1
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diff changeset
689 mov #CYGARC_REG_BRCR,r1 ! Reset UBC common register
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diff changeset
690 mov.w r0,@r1
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diff changeset
691 mov.l $CYGARC_REG_TSTR,r1 ! Disable timers
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parents: 101
diff changeset
692 mov.b r0,@r1
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diff changeset
693 mov.l $CYGARC_REG_IPRA,r1 ! Disable interrupt request sources
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parents: 101
diff changeset
694 mov.w r0,@r1
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diff changeset
695 mov.l $CYGARC_REG_IPRB,r1
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parents: 101
diff changeset
696 mov.w r0,@r1
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diff changeset
697 #ifdef CYGARC_SH_MOD_INTC_V2
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diff changeset
698 mov.l $CYGARC_REG_IPRC,r1
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diff changeset
699 mov.w r0,@r1
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diff changeset
700 mov.l $CYGARC_REG_IPRD,r1
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diff changeset
701 mov.w r0,@r1
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diff changeset
702 mov.l $CYGARC_REG_IPRE,r1
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diff changeset
703 mov.w r0,@r1
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diff changeset
704 mov.l $CYGARC_REG_ICR1,r1 ! Set interrupt controller to IRQ mode
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jlarmour
parents: 101
diff changeset
705 mov.w r0,@r1
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diff changeset
706 #endif
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diff changeset
707
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diff changeset
708 # Initialize VBR if necessary
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diff changeset
709 #if !defined(CYG_HAL_STARTUP_RAM) || \
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diff changeset
710 ( defined(CYG_HAL_STARTUP_RAM) && \
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parents: 101
diff changeset
711 !defined(CYGSEM_HAL_USE_ROM_MONITOR))
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diff changeset
712 mov.l $__reset,r1 ! Set VBR
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parents: 101
diff changeset
713 ldc r1,vbr
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diff changeset
714 #endif
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diff changeset
715
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diff changeset
716
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diff changeset
717 #ifdef __DEBUG
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diff changeset
718 mov #0,r0
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diff changeset
719 mov #1,r1
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diff changeset
720 mov #2,r2
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diff changeset
721 mov #3,r3
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diff changeset
722 mov #4,r4
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diff changeset
723 mov #5,r5
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diff changeset
724 mov #6,r6
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diff changeset
725 mov #7,r7
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diff changeset
726 mov #8,r8
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diff changeset
727 mov #9,r9
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diff changeset
728 mov #10,r10
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diff changeset
729 mov #11,r11
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diff changeset
730 mov #12,r12
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parents: 101
diff changeset
731 mov #13,r13
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diff changeset
732 mov #14,r14
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diff changeset
733 #endif
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diff changeset
734
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diff changeset
735 # Call platform specific hardware initialization
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diff changeset
736 # This may include memory controller initialization. It is not
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diff changeset
737 # safe to access RAM until after this point.
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diff changeset
738 hal_hardware_init
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diff changeset
739
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diff changeset
740 # Now copy necessary bits to RAM and jump to the VMA base
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diff changeset
741
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diff changeset
742 #ifdef CYG_HAL_STARTUP_ROM
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diff changeset
743
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diff changeset
744 # Copy data from ROM to ram
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diff changeset
745 mov.l $__rom_data_start,r3 ! r3 = rom start
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diff changeset
746 mov.l $__ram_data_start,r4 ! r4 = ram start
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diff changeset
747 mov.l $__ram_data_end,r5 ! r5 = ram end
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diff changeset
748
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diff changeset
749 cmp/eq r4,r5 ! skip if no data
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diff changeset
750 bt 2f
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diff changeset
751 1: mov.l @r3+,r0 ! get word from ROM
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diff changeset
752 mov.l r0,@r4 ! store in RAM
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diff changeset
753 add #4,r4
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diff changeset
754 cmp/eq r4,r5 ! compare
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diff changeset
755 bf 1b ! loop if not yet done
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diff changeset
756 2:
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diff changeset
757
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diff changeset
758 # Jump to the proper VMA base of the code.
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diff changeset
759 mov.l $_complete_setup,r0
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diff changeset
760 jmp @r0
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diff changeset
761 nop
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diff changeset
762 .align 2
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diff changeset
763
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764 .extern __rom_data_start
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diff changeset
765 .extern __ram_data_start
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766 .extern __ram_data_end
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diff changeset
767
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768 $__rom_data_start:
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769 .long __rom_data_start
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diff changeset
770 $__ram_data_start:
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771 .long __ram_data_start
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diff changeset
772 $__ram_data_end:
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773 .long __ram_data_end
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diff changeset
774 $_complete_setup:
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diff changeset
775 .long _complete_setup
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diff changeset
776
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diff changeset
777 #elif defined(CYG_HAL_STARTUP_ROMRAM)
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diff changeset
778
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diff changeset
779 # Copy everything to the proper VMA base and jump to it.
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diff changeset
780 mov.l $_vectors_lma,r0
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diff changeset
781 mov.l $_vectors_vma,r1
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diff changeset
782 mov.l $_end,r2
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diff changeset
783 1: mov.l @r0+,r3 ! get word from ROM
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diff changeset
784 mov.l r3,@r1 ! store in RAM
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diff changeset
785 add #4,r1
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diff changeset
786 cmp/eq r1,r2 ! compare
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diff changeset
787 bf 1b ! loop if not yet done
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diff changeset
788 mov.l $_complete_setup,r0
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diff changeset
789 jmp @r0
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diff changeset
790 nop
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diff changeset
791 .align 2
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diff changeset
792
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diff changeset
793 .extern __vector_code_lma
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diff changeset
794
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diff changeset
795 $_vectors_lma:
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diff changeset
796 .long __vector_code_lma
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diff changeset
797 $_vectors_vma:
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diff changeset
798 .long __reset
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diff changeset
799 $_end:
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diff changeset
800 .long _end
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diff changeset
801 $_complete_setup:
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diff changeset
802 .long _complete_setup
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diff changeset
803
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diff changeset
804 #else
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diff changeset
805
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diff changeset
806 # Jump to remaining setup code. Relative branch is OK since VMA=LMA.
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diff changeset
807 bra _complete_setup
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diff changeset
808
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diff changeset
809 #endif
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diff changeset
810
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diff changeset
811 .align 2
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diff changeset
812
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diff changeset
813 $nCYG_SR:
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diff changeset
814 .long CYG_SR
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diff changeset
815 $CYGARC_REG_TSTR:
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diff changeset
816 .long CYGARC_REG_TSTR
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diff changeset
817 $CYGARC_REG_IPRA:
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818 .long CYGARC_REG_IPRA
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diff changeset
819 $CYGARC_REG_IPRB:
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diff changeset
820 .long CYGARC_REG_IPRB
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diff changeset
821 #ifdef CYGARC_SH_MOD_INTC_V2
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822 $CYGARC_REG_IPRC:
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diff changeset
823 .long CYGARC_REG_IPRC
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diff changeset
824 $CYGARC_REG_IPRD:
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diff changeset
825 .long CYGARC_REG_IPRD
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diff changeset
826 $CYGARC_REG_IPRE:
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diff changeset
827 .long CYGARC_REG_IPRE
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diff changeset
828 $CYGARC_REG_ICR1:
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diff changeset
829 .long CYGARC_REG_ICR1
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diff changeset
830 #endif
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diff changeset
831
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diff changeset
832 $__reset:
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diff changeset
833 .long __reset
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834
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835 #-----------------------------------------------------------------------------
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836 # Complete target initialization and setup.
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837 # After this point we can use absolute addressing modes and access all the
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diff changeset
838 # memory in the system.
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diff changeset
839
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840 _complete_setup:
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diff changeset
841
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diff changeset
842 # Set up monitor related stuff (vectors primarily)
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843 hal_mon_init
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844
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845 # set up stack
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846 mov.l $__startup_stack,r15
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847
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848 # clear BSS
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849 mov.l $__bss_start,r3 ! r3 = start
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850 mov.l $__bss_end,r4 ! r4 = end
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851 mov #0,r0 ! r0 = 0
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852 1: cmp/eq r3,r4 ! skip if no bss
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diff changeset
853 bt 2f
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854 mov.l r0,@r3 ! store zero
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855 add #4,r3
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diff changeset
856 bra 1b ! loop
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857 nop
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858 2:
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859
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diff changeset
860 # It is now safe to call C functions which may rely on initialized
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diff changeset
861 # data.
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diff changeset
862
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diff changeset
863 # # Initialize MMU.
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864 # .extern hal_MMU_init
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865 # jsr hal_MMU_init
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866 # nop
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diff changeset
867
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868 # Enable caches
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869 mov.l $_cyg_hal_enable_caches,r1
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diff changeset
870 jsr @r1
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diff changeset
871 nop
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872
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diff changeset
873 # Variant HALs may need to do something special before we continue
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874 mov.l $_hal_variant_init,r1
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diff changeset
875 jsr @r1
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diff changeset
876 nop
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877
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diff changeset
878 # Platform initialization
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879 mov.l $_hal_platform_init,r1
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diff changeset
880 jsr @r1
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diff changeset
881 nop
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diff changeset
882
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diff changeset
883 # call c++ constructors
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884 mov.l $_cyg_hal_invoke_constructors,r1
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diff changeset
885 jsr @r1
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diff changeset
886 nop
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diff changeset
887
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diff changeset
888 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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889 mov.l $_initialize_stub,r1
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diff changeset
890 jsr @r1
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diff changeset
891 nop
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892 #endif
107
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diff changeset
893 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
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diff changeset
894 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
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diff changeset
895 mov.l $_hal_ctrlc_isr_init,r1
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diff changeset
896 jsr @r1
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diff changeset
897 nop
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diff changeset
898 #endif
105
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diff changeset
899
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diff changeset
900 mov.l $_cyg_start,r1
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diff changeset
901 jsr @r1
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diff changeset
902 nop
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diff changeset
903 9:
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diff changeset
904 bra 9b ! if we return, loop
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diff changeset
905 nop
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diff changeset
906
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diff changeset
907 .align 2
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diff changeset
908 $__startup_stack:
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909 .long __startup_stack
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diff changeset
910
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diff changeset
911 .extern __bss_start
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diff changeset
912 .extern __bss_end
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913 .extern _cyg_hal_invoke_constructors
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diff changeset
914 .extern _hal_variant_init
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diff changeset
915 .extern _hal_platform_init
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diff changeset
916 .extern _cyg_start
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diff changeset
917
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diff changeset
918 $__bss_start:
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diff changeset
919 .long __bss_start
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diff changeset
920 $__bss_end:
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diff changeset
921 .long __bss_end
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diff changeset
922 $_cyg_hal_invoke_constructors:
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923 .long _cyg_hal_invoke_constructors
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diff changeset
924 $_cyg_hal_enable_caches:
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diff changeset
925 .long _cyg_hal_enable_caches
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parents: 101
diff changeset
926 $_hal_variant_init:
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jlarmour
parents: 101
diff changeset
927 .long _hal_variant_init
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jlarmour
parents: 101
diff changeset
928 $_hal_platform_init:
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jlarmour
parents: 101
diff changeset
929 .long _hal_platform_init
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jlarmour
parents: 101
diff changeset
930 $_cyg_start:
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jlarmour
parents: 101
diff changeset
931 .long _cyg_start
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jlarmour
parents: 101
diff changeset
932
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diff changeset
933 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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parents: 101
diff changeset
934 .extern _initialize_stub
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parents: 101
diff changeset
935 $_initialize_stub:
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parents: 101
diff changeset
936 .long _initialize_stub
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jlarmour
parents: 101
diff changeset
937 #endif
107
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parents: 105
diff changeset
938 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
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parents: 105
diff changeset
939 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
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parents: 105
diff changeset
940 .extern _hal_ctrlc_isr_init
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parents: 105
diff changeset
941 $_hal_ctrlc_isr_init:
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parents: 105
diff changeset
942 .long _hal_ctrlc_isr_init
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parents: 105
diff changeset
943 #endif
105
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parents: 101
diff changeset
944
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diff changeset
945 #---------------------------------------------------------------------------
84
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diff changeset
946 # Cache operations
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parents: 82
diff changeset
947 # These need to be written in assembly to ensure they do not rely on data
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diff changeset
948 # in cachable space (i.e., code must use registers exclusively, not the stack).
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parents: 82
diff changeset
949
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diff changeset
950 # This macro must be used at the top of each cache function. It ensures
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parents: 82
diff changeset
951 # that the code gets executed from a shadow region where caching is disabled
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parents: 82
diff changeset
952 # (0xA0000000).
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parents: 82
diff changeset
953 .macro GOTO_NONCACHED_SHADOW
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parents: 82
diff changeset
954 mova 10f,r0
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parents: 82
diff changeset
955 mov.l $MASK,r1
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parents: 82
diff changeset
956 and r1,r0
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parents: 82
diff changeset
957 mov.l $BASE,r1
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parents: 82
diff changeset
958 or r1,r0
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diff changeset
959 jmp @r0
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parents: 82
diff changeset
960 nop
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parents: 82
diff changeset
961 .align 2
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parents: 82
diff changeset
962 10:
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parents: 82
diff changeset
963 .endm
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diff changeset
964
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diff changeset
965 .globl _cyg_hal_cache_enable
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diff changeset
966 _cyg_hal_cache_enable:
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diff changeset
967 GOTO_NONCACHED_SHADOW
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diff changeset
968 mov #CYGARC_REG_CCR,r1
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parents: 82
diff changeset
969 mov.l @r1,r0
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parents: 82
diff changeset
970 or #CYGARC_REG_CCR_CE,r0
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parents: 82
diff changeset
971 mov.l r0,@r1
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parents: 82
diff changeset
972 nop
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parents: 82
diff changeset
973 rts
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parents: 82
diff changeset
974 nop
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parents: 82
diff changeset
975
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parents: 82
diff changeset
976 .globl _cyg_hal_cache_disable
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parents: 82
diff changeset
977 _cyg_hal_cache_disable:
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jlarmour
parents: 82
diff changeset
978 GOTO_NONCACHED_SHADOW
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jlarmour
parents: 82
diff changeset
979 mov #CYGARC_REG_CCR,r1
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parents: 82
diff changeset
980 mov.l @r1,r0
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parents: 82
diff changeset
981 mov #CYGARC_REG_CCR_CE,r2
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jlarmour
parents: 82
diff changeset
982 not r2,r2
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parents: 82
diff changeset
983 and r2,r0
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jlarmour
parents: 82
diff changeset
984 mov.l r0,@r1
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jlarmour
parents: 82
diff changeset
985 nop
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jlarmour
parents: 82
diff changeset
986 rts
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jlarmour
parents: 82
diff changeset
987 nop
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jlarmour
parents: 82
diff changeset
988
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parents: 82
diff changeset
989 .globl _cyg_hal_cache_invalidate_all
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parents: 82
diff changeset
990 _cyg_hal_cache_invalidate_all:
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jlarmour
parents: 82
diff changeset
991 GOTO_NONCACHED_SHADOW
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jlarmour
parents: 82
diff changeset
992 mov #CYGARC_REG_CCR,r1
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jlarmour
parents: 82
diff changeset
993 mov.l @r1,r0
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jlarmour
parents: 82
diff changeset
994 or #CYGARC_REG_CCR_CF,r0
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jlarmour
parents: 82
diff changeset
995 mov.l r0,@r1
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parents: 82
diff changeset
996 nop ! Nothing in the docs suggest we need
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jlarmour
parents: 82
diff changeset
997 nop ! nops here, but without them, the
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jlarmour
parents: 82
diff changeset
998 nop ! CPU crashes.
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jlarmour
parents: 82
diff changeset
999 rts
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jlarmour
parents: 82
diff changeset
1000 nop
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jlarmour
parents: 82
diff changeset
1001
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jlarmour
parents: 82
diff changeset
1002 .globl _cyg_hal_cache_sync
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parents: 82
diff changeset
1003 _cyg_hal_cache_sync:
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jlarmour
parents: 82
diff changeset
1004 GOTO_NONCACHED_SHADOW
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jlarmour
parents: 82
diff changeset
1005 mov.l $CYGARC_REG_CACHE_ADDRESS_FLUSH,r0
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parents: 82
diff changeset
1006 mov.l $CYGARC_REG_CACHE_ADDRESS_BASE,r1
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parents: 82
diff changeset
1007 mov.l $CYGARC_REG_CACHE_ADDRESS_TOP,r2
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parents: 82
diff changeset
1008 mov.l $CYGARC_REG_CACHE_ADDRESS_STEP,r3
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parents: 82
diff changeset
1009 1: cmp/hi r1,r2
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jlarmour
parents: 82
diff changeset
1010 bf 2f
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jlarmour
parents: 82
diff changeset
1011 mov.l r0,@r1
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jlarmour
parents: 82
diff changeset
1012 bra 1b
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jlarmour
parents: 82
diff changeset
1013 add r3,r1 ! delay slot!
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jlarmour
parents: 82
diff changeset
1014 2: nop
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parents: 82
diff changeset
1015 rts
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jlarmour
parents: 82
diff changeset
1016 nop
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jlarmour
parents: 82
diff changeset
1017
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parents: 82
diff changeset
1018 .globl _cyg_hal_cache_write_mode
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parents: 82
diff changeset
1019 _cyg_hal_cache_write_mode:
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parents: 82
diff changeset
1020 GOTO_NONCACHED_SHADOW
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parents: 82
diff changeset
1021 # Mode argument in r4. Compute the WT and CB states from this
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parents: 82
diff changeset
1022 mov r4,r0
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jlarmour
parents: 82
diff changeset
1023 and #1,r0
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jlarmour
parents: 82
diff changeset
1024 shll r0 ! shift to WT position
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jlarmour
parents: 82
diff changeset
1025 mov r0,r1 ! duplicate at CB position
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jlarmour
parents: 82
diff changeset
1026 shll r1
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parents: 82
diff changeset
1027 or r1,r0
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jlarmour
parents: 82
diff changeset
1028 xor #CYGARC_REG_CCR_WT,r0 ! WT must be 0 for write-back
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parents: 82
diff changeset
1029 # Read current state and mask out the two caching mode bits
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jlarmour
parents: 82
diff changeset
1030 mov #CYGARC_REG_CCR,r1
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jlarmour
parents: 82
diff changeset
1031 mov.l @r1,r3
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jlarmour
parents: 82
diff changeset
1032 mov #CYGARC_REG_CCR_CB|CYGARC_REG_CCR_WT,r2
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jlarmour
parents: 82
diff changeset
1033 not r2,r2
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parents: 82
diff changeset
1034 and r2,r3
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diff changeset
1035 # Or in the new settings and restore to CCR
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diff changeset
1036 or r0,r3
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jlarmour
parents: 82
diff changeset
1037 mov.l r3,@r1
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jlarmour
parents: 82
diff changeset
1038 nop
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parents: 82
diff changeset
1039 rts
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diff changeset
1040 nop
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parents: 82
diff changeset
1041
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diff changeset
1042
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diff changeset
1043
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parents: 82
diff changeset
1044 .align 2
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parents: 82
diff changeset
1045 $CYGARC_REG_CACHE_ADDRESS_FLUSH:
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diff changeset
1046 .long CYGARC_REG_CACHE_ADDRESS_FLUSH
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diff changeset
1047 $CYGARC_REG_CACHE_ADDRESS_BASE:
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parents: 82
diff changeset
1048 .long CYGARC_REG_CACHE_ADDRESS_BASE
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parents: 82
diff changeset
1049 $CYGARC_REG_CACHE_ADDRESS_TOP:
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diff changeset
1050 .long CYGARC_REG_CACHE_ADDRESS_TOP
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diff changeset
1051 $CYGARC_REG_CACHE_ADDRESS_STEP:
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diff changeset
1052 .long CYGARC_REG_CACHE_ADDRESS_STEP
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parents: 82
diff changeset
1053
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parents: 82
diff changeset
1054
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parents: 82
diff changeset
1055 $MASK:
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jlarmour
parents: 82
diff changeset
1056 .long 0x1fffffff ! mask off top 3 bits
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parents: 82
diff changeset
1057 $BASE:
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jlarmour
parents: 82
diff changeset
1058 .long 0xa0000000 ! base of non-cachable memory
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parents: 82
diff changeset
1059
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diff changeset
1060 #---------------------------------------------------------------------------
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1061 # Interrupt vector tables.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1062 # These tables contain the isr, data and object pointers used to deliver
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1063 # interrupts to user code.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1064
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1065 .data
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1066
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1067 .extern _hal_default_isr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1068
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1069 .globl _hal_interrupt_handlers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1070 _hal_interrupt_handlers:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1071 .rept CYG_ISR_TABLE_SIZE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1072 .long _hal_default_isr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1073 .endr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1074
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1075 .globl _hal_interrupt_data
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1076 _hal_interrupt_data:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1077 .rept CYG_ISR_TABLE_SIZE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1078 .long 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1079 .endr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1080
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1081 .globl _hal_interrupt_objects
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1082 _hal_interrupt_objects:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1083 .rept CYG_ISR_TABLE_SIZE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1084 .long 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1085 .endr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1086
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1087 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1088 .globl _cyg_hal_ILVL_table
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1089 _cyg_hal_ILVL_table:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1090 # The first entries in the table have static priorities.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1091
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1092 .byte 0xf // NMI
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1093 .byte 0xf // Reserved
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1094 .byte 0xf // LVL0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1095 .byte 0xe // LVL1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1096 .byte 0xd // LVL2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1097 .byte 0xc // LVL3
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1098 .byte 0xb // LVL4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1099 .byte 0xa // LVL5
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1100 .byte 0x9 // LVL6
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1101 .byte 0x8 // LVL7
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1102 .byte 0x7 // LVL8
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1103 .byte 0x6 // LVL9
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1104 .byte 0x5 // LVL10
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1105 .byte 0x4 // LVL11
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1106 .byte 0x3 // LVL12
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1107 .byte 0x2 // LVL13
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1108 .byte 0x1 // LVL14
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1109 .byte 0xf // Reserved
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1110
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1111 # The rest of the table consists of programmable levels, maintained
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1112 # by the HAL_INTERRUPT_SET_LEVEL macro.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1113 .rept (CYGNUM_HAL_ISR_MAX-CYGNUM_HAL_INTERRUPT_RESERVED_3E0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1114 .byte 0xf
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1115 .endr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1116 #endif // CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1117
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1118 #---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1119 ## Temporary interrupt stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1120
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1121 .section ".bss"
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1122
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1123 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1124 .balign 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1125 .global _cyg_interrupt_stack_base
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1126 _cyg_interrupt_stack_base:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1127 __interrupt_stack_base:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1128 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1129 .byte 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1130 .endr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1131 .balign 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
1132 .global _cyg_interrupt_stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1133 _cyg_interrupt_stack:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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parents:
diff changeset
1134 __interrupt_stack:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1135
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1136 .long 0,0,0,0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1137 #endif // CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
1138
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1139
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1140 #ifdef CYGSEM_HAL_ROM_MONITOR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1141 // Enough space for stub to handle downloads. If using thread capabilities
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1142 // it will be using the RAM application's stack.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1143 # define STARTUP_STACK_SIZE 1024
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1144 #else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1145 # ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1146 // Enough space to run constructors.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1147 // FIXME: 512 is enough for all tests. doc/examples/twothreads
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1148 // calls printf on this stack though, and so requires more space.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1149 # define STARTUP_STACK_SIZE 1024
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1150 # else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1151 # define STARTUP_STACK_SIZE CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1152 # endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1153 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1154
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1155 .balign 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1156 __startup_stack_base:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1157 .rept STARTUP_STACK_SIZE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1158 .byte 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1159 .endr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1160 .balign 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1161 __startup_stack:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1162 .long 0,0,0,0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1163
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1164 #---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
1165 # end of vectors.S