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annotate packages/hal/sh/arch/current/src/vectors.S @ 134:d2f49caf9e38 ecos-sw-2000-11-03

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Merge from eCos master repository on 2000-11-03-09:00:49-GMT
author jlarmour
date Fri, 03 Nov 2000 21:17:40 +0000
parents 0ae0bc38e387
children 289bf90c6a9b
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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/variant.inc>
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57 #include <cyg/hal/sh_regs.h>
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58 #include <cyg/hal/sh_offsets.inc>
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59
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60 #include <cyg/hal/hal_intr.h>
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63 #===========================================================================
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64
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65 .file "vectors.S"
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66
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67 #undef __DEBUG
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68
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69 #===========================================================================
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70 # Start by defining the exceptions vectors.
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71 .section ".vectors","ax"
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72
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73 # reset 0xa0000000
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74 # other exceptions VBR+0x100
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75 # tlb miss VBR+0x400
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76 # interrupts VBR+0x600
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77
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79 #===========================================================================
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80 # Reset code must be PC relative so it can be executed out of the shadow
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81 # area during startup. Not until after hal_hardware_init can the system
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82 # be expected to provide the proper address space (at that time we
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83 # jump to the VMA base of the code).
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84
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85 .org 0x000
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86 .globl __reset;
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87 __reset:
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88 mov.l $__reset_platform,r0
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89 jmp @r0
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90 nop
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91
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92 # Note: this is the unmapped, shadow address of the start of code
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93 # Sadly, it is too far to just branch to.
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94 .align 2
105
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95 $__reset_platform:
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96 #ifdef CYG_HAL_STARTUP_RAM
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97 .long __reset_platform
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98 #else
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99 .long __reset_platform+0x20000000 // Uncached "shadow" address
107
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100 #endif
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101
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102 #---------------------------------------------------------------------------
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103 # Exception entry
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104
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105 .org 0x100
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106 __exception:
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107
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108 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
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109 mov #1,r7
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110 #endif
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111
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112 mov.l $nCYGARC_REG_EXCEVT,r1
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113 mov.l @r1,r1
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114 shlr2 r1
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115 shlr r1 ! divide cause by 0x08
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116 mov.l $_hal_vsr_table,r0
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117 mov.l @(r0,r1),r1
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118 jmp @r1
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119 nop
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120
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121 .align 2
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122 $_hal_vsr_table:
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123 .long _hal_vsr_table
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124
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125 #---------------------------------------------------------------------------
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126 # This code handles the common part of all exception handlers.
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127 # It saves the machine state onto the stack and then calls
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128 # a "C" routine to do the rest of the work. This work may result
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129 # in thread switches, and changes to the saved state. When we return
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130 # here the saved state is restored and execution is continued.
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131
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132 .globl _cyg_hal_default_exception_vsr
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133 _cyg_hal_default_exception_vsr:
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134
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135 # We come here with all register containing their
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136 # pre-exception values except:
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137 # r0_b-r7_b = saved r0-r7
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138 # r7 = vector #
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139 # spc = saved pc
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140 # ssr = saved sr
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141
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142 # Save away some registers
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143 mov r15,r1 ! entry sp
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144
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145 #ifdef __DEBUG
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146 mov.l $exc_state_marker,r0
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147 mov.l r0,@-r15
134
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diff changeset
148 mov.l $nCYGARC_REG_EXCEVT,r0
76
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149 mov.l @r0,r0
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150 mov.l r0,@-r15
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151 #endif
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152
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153 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
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154 add #-12,r15 ! Space for cause, gbr, and vbr
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155 #else
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156 add #-4,r15 ! Space for cause
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157
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158 stc gbr,r0 ! GBR
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159 mov.l r0,@-r15
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160 stc vbr,r0 ! VBR
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161 mov.l r0,@-r15
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162 #endif
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163
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164 stc spc,r0
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165 mov.l r0,@-r15 ! PC
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166 stc ssr,r0
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167 mov.l r0,@-r15 ! SR
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168
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169 sts.l pr,@-r15 ! PR
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170 sts.l mach,@-r15 ! mach
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171 sts.l macl,@-r15 ! macl
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172
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173 mov.l r1,@-r15 ! entry sp
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174 mov.l r14,@-r15 ! r14-r0
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175 mov.l r13,@-r15
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176 mov.l r12,@-r15
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177 mov.l r11,@-r15
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178 mov.l r10,@-r15
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179 mov.l r9,@-r15
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180 mov.l r8,@-r15
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181 stc.l r7_bank,@-r15
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182 stc.l r6_bank,@-r15
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183 stc.l r5_bank,@-r15
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184 stc.l r4_bank,@-r15
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185 stc.l r3_bank,@-r15
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186 stc.l r2_bank,@-r15
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187 stc.l r1_bank,@-r15
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188 stc.l r0_bank,@-r15
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189
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190 # After setting the SR it will be possible to use breakpoints.
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191 mov.l $nCYG_SR1,r1
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192 ldc r1,sr
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193 # ------------------------------------------------------------
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194 # Register bank has changed now.
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195
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196 #ifdef __DEBUG
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197 # It is safe to use breakpoints below this point.
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198 .globl _cyg_hal_default_exception_vsr_bp_safe
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199 _cyg_hal_default_exception_vsr_bp_safe:
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200 #endif
134
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201 mov.l $nCYGARC_REG_EXCEVT,r0
76
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202 mov.l @r0,r4
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203 mov #-5,r0 ! divide cause by 0x20
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204 shld r0,r4
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205 mov #CYGARC_SHREG_EVENT,r0
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206 mov.l r4,@(r0,r15) ! store decoded vector number back
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207
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208 # The entire CPU state is now stashed on the stack,
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209 # call into C to do something with it.
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210
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211 mov r15,r4 ! R4 = register dump
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212
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213 mov.l $restore_state,r0 ! get return link
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214 lds r0,pr ! to procedure register
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215
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216 mov.l $_cyg_hal_exception_handler,r0
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217 jmp @r0 ! call C code, r4 = registers
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218 nop
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219
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220 .align 2
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221 $restore_state:
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222 .long restore_state
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223 $nCYG_SR1:
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224 .long CYG_SR
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225
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226 #ifdef __DEBUG
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227 $exc_state_marker:
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228 .long 0x77777770
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229 #endif
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230
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231 .extern _cyg_hal_exception_handler
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232
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233 $_cyg_hal_exception_handler:
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234 .long _cyg_hal_exception_handler
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235
82
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diff changeset
236 #---------------------------------------------------------------------------
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237 # TLB miss entry
76
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238
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239 .org 0x400
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240 __tlb_miss:
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241 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
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242 mov #2,r7
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243 #endif
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244
134
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diff changeset
245 mov.l $nCYGARC_REG_EXCEVT,r1
76
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246 mov.l @r1,r1
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247 shlr2 r1
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248 shlr r1 ! divide cause by 0x08
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249 mov.l $_hal_vsr_table2,r0
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250 mov.l @(r0,r1),r1
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251 jmp @r1
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252 nop
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253
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254 .align 2
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255 $_hal_vsr_table2:
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256 .long _hal_vsr_table
134
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diff changeset
257 $nCYGARC_REG_EXCEVT:
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258 .long CYGARC_REG_EXCEVT
76
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259
82
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260 #---------------------------------------------------------------------------
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261 # Interrupt entry
76
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262
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263 .org 0x600
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264 __interrupt:
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265
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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diff changeset
266 #ifdef CYGHWR_HAL_SH_IRQ_HANDLE_SPURIOUS_INTERRUPTS
76
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267 # A spurious interrupt with INTEVT=0 may be caused by
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268 # clearing of BL. Those interrupts need to be ignored.
134
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diff changeset
269 mov.l $nCYGARC_REG_INTEVT,r0
76
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270 mov.l @r0,r0
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271 cmp/eq #0,r0
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272 bf 1f
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273 rte
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274 nop
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275 1:
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276 #endif
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277
84
489eb5632bc3 Merge from eCos master repository on 2000-04-28-18:44:39-BST
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diff changeset
278
76
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279 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
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280 mov #3,r7
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281 #endif
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282
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283 mov.l $_hal_vsr_table_int,r1
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284 mov.l @r1,r1
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285 jmp @r1
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286 nop
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287
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288 .align 2
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289 $_hal_vsr_table_int:
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290 .long _hal_vsr_table+CYGNUM_HAL_VECTOR_INTERRUPT*4
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291
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292 #---------------------------------------------------------------------------
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293 # Common interrupt handling code.
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294
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295 .globl _cyg_hal_default_interrupt_vsr
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296 _cyg_hal_default_interrupt_vsr:
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297
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298 # We come here with all register containing their
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diff changeset
299 # pre-exception values except:
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300 # r0_b-r7_b = saved r0-r7
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301 # r7 = vector #
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diff changeset
302 # spc = saved pc
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diff changeset
303 # ssr = saved sr
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304
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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305 # 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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306 mov r15,r1 ! entry sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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307
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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308 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
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309 add #-12,r15 ! Space for cause, gbr, and vbr
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310 #else
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311 add #-4,r15 ! Space for cause
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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312
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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313 stc gbr,r0 ! GBR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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314 mov.l r0,@-r15
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315 stc vbr,r0 ! VBR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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316 mov.l r0,@-r15
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317 #endif
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318
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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319 stc spc,r0
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320 mov.l r0,@-r15 ! PC
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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321 stc ssr,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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322 mov.l r0,@-r15 ! 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
323
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
324 sts.l pr,@-r15 ! PR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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325 sts.l mach,@-r15 ! mach
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
326 sts.l macl,@-r15 ! macl
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
327
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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328 mov.l r1,@-r15 ! entry sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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329 mov.l r14,@-r15 ! r14-r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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330 mov.l r13,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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331 mov.l r12,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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332 mov.l r11,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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333 mov.l r10,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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334 mov.l r9,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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335 mov.l r8,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
336 stc.l r7_bank,@-r15
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337 stc.l r6_bank,@-r15
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diff changeset
338 stc.l r5_bank,@-r15
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339 stc.l r4_bank,@-r15
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diff changeset
340 stc.l r3_bank,@-r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
341 stc.l r2_bank,@-r15
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342 stc.l r1_bank,@-r15
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343 stc.l r0_bank,@-r15
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344
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345 # 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
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346 mov.l $nCYG_SR2,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
347 ldc r1,sr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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348 # ------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
349 # Register bank has changed now.
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diff changeset
350
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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351 #ifdef __DEBUG
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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352 # 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
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353 .globl _cyg_hal_default_interrupt_vsr_bp_safe
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354 _cyg_hal_default_interrupt_vsr_bp_safe:
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355 #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
356
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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357 # 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
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358 # 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
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diff changeset
359
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
360 # The entire CPU state is now stashed on the stack,
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diff changeset
361 # 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
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diff changeset
362 # for this 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
363
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
364 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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365 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
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diff changeset
366 mov.l @r0,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
367 add #1,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
368 mov.l r1,@r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
369 #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
370
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
371 mov r15,r8 ! R8 = register dump
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
372
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
373 #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
374
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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375 mov.l $__interrupt_stack_base,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
376 mov.l $__interrupt_stack,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
377 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
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diff changeset
378 bt 2f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
379 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
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diff changeset
380 bf 1f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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381 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
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diff changeset
382 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
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diff changeset
383
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
384 #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
385
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
386 #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
387 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
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diff changeset
388 mov r7,r5 ! arg1 = vector number
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
389 mov.l $_cyg_instrument,r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
390 mov #0,r6 ! arg2 = 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
391 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
392 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
393 bra 1f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
394 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
395
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
396 .align 2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
397 $n0301:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
398 .long 0x0301
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
399 $_cyg_instrument:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
400 .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
401 .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
402 1:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
403 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
404
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
jlarmour
parents: 132
diff changeset
405 # Decode the interrupt vector, and find ISR index
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
jlarmour
parents: 132
diff changeset
406 hal_intc_decode r0,r4
126
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST
jlarmour
parents: 115
diff changeset
407
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
408 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
409 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
410 ! to saved state.
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
jlarmour
parents: 132
diff changeset
411 hal_intc_translate r4,r9
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
412
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
413 #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
414 || 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
415 # 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
jlarmour
parents: 101
diff changeset
416 # 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
jlarmour
parents: 101
diff changeset
417 # plant a breakpoint at some later time.
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
418
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
419 mov.l $_hal_saved_interrupt_state,r1
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
420 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
421 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
422
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
423 #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
424
101
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST
jlarmour
parents: 99
diff changeset
425 #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
426 # 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
427 # 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
428 # 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
429
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
430 # 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
431 # 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
432 # Ix = 15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
433 # 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
434 # 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
435 # IRA sources:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
436 # 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
437 # IRB sources:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
438 # 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
439
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
440 # 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
441 # 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
442 # 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
443
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
444 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
445 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
446 shll2 r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
447 shll2 r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
448 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
449 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
450 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
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 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
454
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
455 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
456 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
457 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
458
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
459 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
460 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
461
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
462 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
463 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
464
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
465 #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
466
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
467 # 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
468 # 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
469 # 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
470 # 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
471 # 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
472 # 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
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 @r15,r15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
475 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
476
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
477 #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
478
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
479 # 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
480 # 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
481
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
482 # 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
483 # 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
484 # 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
485 # 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
486 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
487
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
488 # 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
489 # 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
490 # 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
491
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
492 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
493 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
494 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
495 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
496 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
497 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
498 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
499
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
500 restore_state:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
501 # 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
502
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
503 # 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
504 # operation
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
505 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
506 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
507 # ------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
508 # 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
509
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
510 #
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
511 # 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
512 #
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
513
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
514 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
515 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
516 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
517 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
518 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
519 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
520 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
521 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
522 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
523 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
524 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
525 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
526 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
527 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
528 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
529 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
530 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
531
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
532 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
533 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
534 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
535
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
536 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
537 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
538 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
539 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
540
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
541 #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
542 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
543 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
544 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
545 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
546 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
547
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
548 rte
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
549 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
550
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
551
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
552 #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
553 #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
554 ##-----------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
555 ## 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
556 ## 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
557 .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
558 _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
559 # 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
560 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
561 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
562
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
563 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
564 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
565 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
566 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
567
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
568 # enable interrupts
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
569 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
570
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
571 # 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
572 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
573 jsr @r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
574 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
575
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
576 # 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
577 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
578 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
579 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
580
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
581 # 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
582 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
583 rts
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
584 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
585
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
586 #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
587 #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
588
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
589 .align 2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
590 #ifdef __DEBUG
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
591 $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
592 .long 0x77777771
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
593 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
594
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
595 #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
596 || 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
597 .extern _hal_saved_interrupt_state
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jlarmour
parents: 101
diff changeset
598 $_hal_saved_interrupt_state:
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
599 .long _hal_saved_interrupt_state
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
600 #endif
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
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parents: 101
diff changeset
601
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
602 #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
603 $__interrupt_stack:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
604 .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
605 $__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
606 .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
607 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
608 $nCYG_SR2:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
609 .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
610 $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
611 .long CYG_SR_BANK1
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
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parents: 132
diff changeset
612 $nCYGARC_REG_INTEVT:
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parents: 132
diff changeset
613 .long CYGARC_REG_INTEVT
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parents: 132
diff changeset
614 #ifdef CYGARC_REG_INTEVT2
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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parents: 80
diff changeset
615 $nCYGARC_REG_INTEVT2:
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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parents: 80
diff changeset
616 .long CYGARC_REG_INTEVT2
99
97d9d85b42c0 Merge from eCos master repository on 2000-06-07-14:25:36-BST
jlarmour
parents: 84
diff changeset
617 #endif
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
618 $_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
619 .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
620 $_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
621 .long _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
622 $_hal_interrupt_objects:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
623 .long _hal_interrupt_objects
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
624
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
625 #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
626 $cyg_hal_ILVL_table:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
627 .long _cyg_hal_ILVL_table
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
628 $unmasked_SR:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
629 .long (CYG_SR & ~CYGARC_REG_SR_IMASK)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
630 #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
jlarmour
parents:
diff changeset
631
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
632
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
633 #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
634 .extern _cyg_scheduler_sched_lock
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
635 .extern _interrupt_end
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
636 .extern _cyg_interrupt_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
637
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
638 $_cyg_interrupt_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
639 .long _cyg_interrupt_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
640 $cyg_scheduler_sched_lock:
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_scheduler_sched_lock
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
642 $_interrupt_end:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
643 .long _interrupt_end
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
644 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
645
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
646 #---------------------------------------------------------------------------
105
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parents: 101
diff changeset
647 # Platform initialization (reset)
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parents: 101
diff changeset
648 __reset_platform:
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
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parents: 132
diff changeset
649 hal_post_reset_init
105
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parents: 101
diff changeset
650
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diff changeset
651 #ifdef __DEBUG
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diff changeset
652 mov #0,r0
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diff changeset
653 mov #1,r1
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diff changeset
654 mov #2,r2
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diff changeset
655 mov #3,r3
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diff changeset
656 mov #4,r4
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diff changeset
657 mov #5,r5
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diff changeset
658 mov #6,r6
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jlarmour
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diff changeset
659 mov #7,r7
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diff changeset
660 mov #8,r8
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diff changeset
661 mov #9,r9
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diff changeset
662 mov #10,r10
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diff changeset
663 mov #11,r11
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jlarmour
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diff changeset
664 mov #12,r12
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jlarmour
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diff changeset
665 mov #13,r13
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diff changeset
666 mov #14,r14
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diff changeset
667 #endif
134
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diff changeset
668
105
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diff changeset
669 # Call platform specific hardware initialization
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jlarmour
parents: 101
diff changeset
670 # This may include memory controller initialization. It is not
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diff changeset
671 # safe to access RAM until after this point.
132
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diff changeset
672 # Note that caches must not be enabled until after this point,
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diff changeset
673 # since we may be fiddling the FRQCR which cannot be safely done
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diff changeset
674 # by code in burst/cachable memory (errata SH7-184e).
105
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jlarmour
parents: 101
diff changeset
675 hal_hardware_init
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diff changeset
676
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diff changeset
677 # Now copy necessary bits to RAM and jump to the VMA base
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diff changeset
678
130
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diff changeset
679 #if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_SUBSETROMRAM)
105
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diff changeset
680
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diff changeset
681 # Copy data from ROM to ram
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parents: 101
diff changeset
682 mov.l $__rom_data_start,r3 ! r3 = rom start
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parents: 101
diff changeset
683 mov.l $__ram_data_start,r4 ! r4 = ram start
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parents: 101
diff changeset
684 mov.l $__ram_data_end,r5 ! r5 = ram end
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jlarmour
parents: 101
diff changeset
685
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parents: 101
diff changeset
686 cmp/eq r4,r5 ! skip if no data
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jlarmour
parents: 101
diff changeset
687 bt 2f
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jlarmour
parents: 101
diff changeset
688 1: mov.l @r3+,r0 ! get word from ROM
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jlarmour
parents: 101
diff changeset
689 mov.l r0,@r4 ! store in RAM
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jlarmour
parents: 101
diff changeset
690 add #4,r4
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jlarmour
parents: 101
diff changeset
691 cmp/eq r4,r5 ! compare
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jlarmour
parents: 101
diff changeset
692 bf 1b ! loop if not yet done
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jlarmour
parents: 101
diff changeset
693 2:
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jlarmour
parents: 101
diff changeset
694
130
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jlarmour
parents: 128
diff changeset
695
105
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jlarmour
parents: 101
diff changeset
696 # Jump to the proper VMA base of the code.
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jlarmour
parents: 101
diff changeset
697 mov.l $_complete_setup,r0
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jlarmour
parents: 101
diff changeset
698 jmp @r0
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jlarmour
parents: 101
diff changeset
699 nop
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jlarmour
parents: 101
diff changeset
700 .align 2
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parents: 101
diff changeset
701
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diff changeset
702 .extern __rom_data_start
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diff changeset
703 .extern __ram_data_start
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diff changeset
704 .extern __ram_data_end
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diff changeset
705 $__rom_data_start:
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diff changeset
706 .long __rom_data_start
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parents: 101
diff changeset
707 $__ram_data_start:
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diff changeset
708 .long __ram_data_start
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parents: 101
diff changeset
709 $__ram_data_end:
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diff changeset
710 .long __ram_data_end
130
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diff changeset
711
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parents: 128
diff changeset
712
105
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jlarmour
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diff changeset
713 $_complete_setup:
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diff changeset
714 .long _complete_setup
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diff changeset
715
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diff changeset
716 #elif defined(CYG_HAL_STARTUP_ROMRAM)
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diff changeset
717
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diff changeset
718 # Copy everything to the proper VMA base and jump to it.
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parents: 101
diff changeset
719 mov.l $_vectors_lma,r0
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diff changeset
720 mov.l $_vectors_vma,r1
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diff changeset
721 mov.l $_end,r2
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diff changeset
722 1: mov.l @r0+,r3 ! get word from ROM
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parents: 101
diff changeset
723 mov.l r3,@r1 ! store in RAM
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jlarmour
parents: 101
diff changeset
724 add #4,r1
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jlarmour
parents: 101
diff changeset
725 cmp/eq r1,r2 ! compare
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jlarmour
parents: 101
diff changeset
726 bf 1b ! loop if not yet done
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jlarmour
parents: 101
diff changeset
727 mov.l $_complete_setup,r0
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jlarmour
parents: 101
diff changeset
728 jmp @r0
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jlarmour
parents: 101
diff changeset
729 nop
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jlarmour
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diff changeset
730 .align 2
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jlarmour
parents: 101
diff changeset
731
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diff changeset
732 .extern __vector_code_lma
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diff changeset
733
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diff changeset
734 $_vectors_lma:
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diff changeset
735 .long __vector_code_lma
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diff changeset
736 $_vectors_vma:
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jlarmour
parents: 101
diff changeset
737 .long __reset
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jlarmour
parents: 101
diff changeset
738 $_end:
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jlarmour
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diff changeset
739 .long _end
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jlarmour
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diff changeset
740 $_complete_setup:
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diff changeset
741 .long _complete_setup
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parents: 101
diff changeset
742
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diff changeset
743 #else
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parents: 101
diff changeset
744
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diff changeset
745 # Jump to remaining setup code. Relative branch is OK since VMA=LMA.
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parents: 101
diff changeset
746 bra _complete_setup
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 126
diff changeset
747 nop
105
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jlarmour
parents: 101
diff changeset
748
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jlarmour
parents: 101
diff changeset
749 #endif
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jlarmour
parents: 101
diff changeset
750
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diff changeset
751 #-----------------------------------------------------------------------------
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diff changeset
752 # Complete target initialization and setup.
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diff changeset
753 # After this point we can use absolute addressing modes and access all the
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parents: 101
diff changeset
754 # memory in the system.
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parents: 101
diff changeset
755
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jlarmour
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diff changeset
756 _complete_setup:
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parents: 101
diff changeset
757
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diff changeset
758 # Set up monitor related stuff (vectors primarily)
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parents: 101
diff changeset
759 hal_mon_init
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jlarmour
parents: 101
diff changeset
760
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diff changeset
761 # set up stack
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parents: 101
diff changeset
762 mov.l $__startup_stack,r15
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jlarmour
parents: 101
diff changeset
763
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jlarmour
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diff changeset
764 # clear BSS
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parents: 101
diff changeset
765 mov.l $__bss_start,r3 ! r3 = start
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parents: 101
diff changeset
766 mov.l $__bss_end,r4 ! r4 = end
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parents: 101
diff changeset
767 mov #0,r0 ! r0 = 0
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parents: 101
diff changeset
768 1: cmp/eq r3,r4 ! skip if no bss
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jlarmour
parents: 101
diff changeset
769 bt 2f
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jlarmour
parents: 101
diff changeset
770 mov.l r0,@r3 ! store zero
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jlarmour
parents: 101
diff changeset
771 add #4,r3
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jlarmour
parents: 101
diff changeset
772 bra 1b ! loop
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jlarmour
parents: 101
diff changeset
773 nop
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jlarmour
parents: 101
diff changeset
774 2:
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jlarmour
parents: 101
diff changeset
775
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diff changeset
776 # It is now safe to call C functions which may rely on initialized
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parents: 101
diff changeset
777 # data.
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parents: 101
diff changeset
778
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diff changeset
779 # # Initialize MMU.
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diff changeset
780 # .extern hal_MMU_init
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diff changeset
781 # jsr hal_MMU_init
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jlarmour
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diff changeset
782 # nop
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parents: 101
diff changeset
783
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jlarmour
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diff changeset
784 # Enable caches
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
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parents: 132
diff changeset
785 mov.l $_cyg_var_enable_caches,r1
105
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jlarmour
parents: 101
diff changeset
786 jsr @r1
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jlarmour
parents: 101
diff changeset
787 nop
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jlarmour
parents: 101
diff changeset
788
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diff changeset
789 # Variant HALs may need to do something special before we continue
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parents: 101
diff changeset
790 mov.l $_hal_variant_init,r1
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diff changeset
791 jsr @r1
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diff changeset
792 nop
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diff changeset
793
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diff changeset
794 # Platform initialization
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diff changeset
795 mov.l $_hal_platform_init,r1
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diff changeset
796 jsr @r1
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diff changeset
797 nop
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diff changeset
798
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diff changeset
799 # call c++ constructors
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diff changeset
800 mov.l $_cyg_hal_invoke_constructors,r1
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diff changeset
801 jsr @r1
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diff changeset
802 nop
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diff changeset
803
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diff changeset
804 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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diff changeset
805 mov.l $_initialize_stub,r1
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diff changeset
806 jsr @r1
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diff changeset
807 nop
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diff changeset
808 #endif
107
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diff changeset
809 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
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diff changeset
810 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
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diff changeset
811 mov.l $_hal_ctrlc_isr_init,r1
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diff changeset
812 jsr @r1
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diff changeset
813 nop
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diff changeset
814 #endif
105
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diff changeset
815
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diff changeset
816 mov.l $_cyg_start,r1
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diff changeset
817 jsr @r1
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diff changeset
818 nop
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diff changeset
819 9:
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diff changeset
820 bra 9b ! if we return, loop
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diff changeset
821 nop
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diff changeset
822
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diff changeset
823 .align 2
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diff changeset
824 $__startup_stack:
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diff changeset
825 .long __startup_stack
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diff changeset
826
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diff changeset
827 .extern __bss_start
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diff changeset
828 .extern __bss_end
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diff changeset
829 .extern _cyg_hal_invoke_constructors
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diff changeset
830 .extern _hal_variant_init
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diff changeset
831 .extern _hal_platform_init
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diff changeset
832 .extern _cyg_start
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diff changeset
833
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diff changeset
834 $__bss_start:
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diff changeset
835 .long __bss_start
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diff changeset
836 $__bss_end:
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diff changeset
837 .long __bss_end
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diff changeset
838 $_cyg_hal_invoke_constructors:
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839 .long _cyg_hal_invoke_constructors
134
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diff changeset
840 $_cyg_var_enable_caches:
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diff changeset
841 .long _cyg_var_enable_caches
105
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diff changeset
842 $_hal_variant_init:
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diff changeset
843 .long _hal_variant_init
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diff changeset
844 $_hal_platform_init:
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845 .long _hal_platform_init
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diff changeset
846 $_cyg_start:
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diff changeset
847 .long _cyg_start
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diff changeset
848
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diff changeset
849 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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850 .extern _initialize_stub
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diff changeset
851 $_initialize_stub:
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852 .long _initialize_stub
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853 #endif
107
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diff changeset
854 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
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diff changeset
855 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
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diff changeset
856 .extern _hal_ctrlc_isr_init
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857 $_hal_ctrlc_isr_init:
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diff changeset
858 .long _hal_ctrlc_isr_init
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diff changeset
859 #endif
105
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diff changeset
860
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diff changeset
861 #---------------------------------------------------------------------------
76
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862 # Interrupt vector tables.
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diff changeset
863 # These tables contain the isr, data and object pointers used to deliver
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diff changeset
864 # interrupts to user code.
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diff changeset
865
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diff changeset
866 .data
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diff changeset
867
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868 .extern _hal_default_isr
134
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869 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
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870 #define CYG_ISR_TABLE_SIZE 1
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871 #else
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872 #define CYG_ISR_TABLE_SIZE CYGNUM_HAL_ISR_COUNT
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873 #endif
76
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diff changeset
874
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diff changeset
875 .globl _hal_interrupt_handlers
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876 _hal_interrupt_handlers:
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diff changeset
877 .rept CYG_ISR_TABLE_SIZE
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parents:
diff changeset
878 .long _hal_default_isr
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parents:
diff changeset
879 .endr
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parents:
diff changeset
880
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diff changeset
881 .globl _hal_interrupt_data
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diff changeset
882 _hal_interrupt_data:
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parents:
diff changeset
883 .rept CYG_ISR_TABLE_SIZE
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parents:
diff changeset
884 .long 0
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parents:
diff changeset
885 .endr
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parents:
diff changeset
886
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diff changeset
887 .globl _hal_interrupt_objects
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diff changeset
888 _hal_interrupt_objects:
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diff changeset
889 .rept CYG_ISR_TABLE_SIZE
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parents:
diff changeset
890 .long 0
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parents:
diff changeset
891 .endr
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diff changeset
892
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parents:
diff changeset
893 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
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parents:
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894 .globl _cyg_hal_ILVL_table
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parents:
diff changeset
895 _cyg_hal_ILVL_table:
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parents:
diff changeset
896 # The first entries in the table have static priorities.
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parents:
diff changeset
897
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parents:
diff changeset
898 .byte 0xf // NMI
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diff changeset
899 .byte 0xf // Reserved
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diff changeset
900 .byte 0xf // LVL0
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diff changeset
901 .byte 0xe // LVL1
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diff changeset
902 .byte 0xd // LVL2
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diff changeset
903 .byte 0xc // LVL3
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diff changeset
904 .byte 0xb // LVL4
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diff changeset
905 .byte 0xa // LVL5
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diff changeset
906 .byte 0x9 // LVL6
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diff changeset
907 .byte 0x8 // LVL7
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diff changeset
908 .byte 0x7 // LVL8
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parents:
diff changeset
909 .byte 0x6 // LVL9
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diff changeset
910 .byte 0x5 // LVL10
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diff changeset
911 .byte 0x4 // LVL11
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diff changeset
912 .byte 0x3 // LVL12
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parents:
diff changeset
913 .byte 0x2 // LVL13
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parents:
diff changeset
914 .byte 0x1 // LVL14
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parents:
diff changeset
915 .byte 0xf // Reserved
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diff changeset
916
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diff changeset
917 # 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
918 # by the HAL_INTERRUPT_SET_LEVEL macro.
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parents:
diff changeset
919 .rept (CYGNUM_HAL_ISR_MAX-CYGNUM_HAL_INTERRUPT_RESERVED_3E0)
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diff changeset
920 .byte 0xf
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diff changeset
921 .endr
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diff changeset
922 #endif // CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
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diff changeset
923
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924 #---------------------------------------------------------------------------
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925 ## Temporary interrupt stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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926
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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927 .section ".bss"
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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928
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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929 #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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930 .balign 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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931 .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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932 _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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933 __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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934 .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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935 .byte 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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936 .endr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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937 .balign 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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938 .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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939 _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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940 __interrupt_stack:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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941
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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942 .long 0,0,0,0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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943 #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
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944
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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945
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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946 #ifdef CYGSEM_HAL_ROM_MONITOR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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947 // 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
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948 // 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
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949 # define STARTUP_STACK_SIZE 1024
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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950 #else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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951 # 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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952 // Enough space to run constructors.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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953 // 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
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954 // 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
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955 # define STARTUP_STACK_SIZE 1024
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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956 # else
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957 # define STARTUP_STACK_SIZE CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
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958 # endif
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959 #endif
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960
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961 .balign 16
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962 __startup_stack_base:
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963 .rept STARTUP_STACK_SIZE
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964 .byte 0
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965 .endr
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966 .balign 16
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967 __startup_stack:
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968 .long 0,0,0,0
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969
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970 #---------------------------------------------------------------------------
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971 # end of vectors.S