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annotate packages/hal/sh/arch/current/src/vectors.S @ 139:79d72068f491 ecos-sw-2000-11-24

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Merge from eCos master repository on 2000-11-24-16:52:55-GMT
author jlarmour
date Fri, 24 Nov 2000 17:42:47 +0000
parents 289bf90c6a9b
children 2e9a636d9de9
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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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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 FUNC_START(_reset)
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87 mov.l $_reset_platform,r0
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88 jmp @r0
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89 nop
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90
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91 # Note: this is the unmapped, shadow address of the start of code
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92 # Sadly, it is too far to just branch to.
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93 .align 2
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94 $_reset_platform:
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95 #ifdef CYG_HAL_STARTUP_RAM
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96 .long CYG_LABEL_DEFN(_reset_platform)
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97 #else
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98 // Uncached "shadow" address
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99 .long CYG_LABEL_DEFN(_reset_platform)+0x20000000
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100 #endif
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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_table2,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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121 .align 2
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122 SYM_PTR_REFn(hal_vsr_table,2)
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124 #---------------------------------------------------------------------------
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125 # This code handles the common part of all exception handlers.
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126 # It saves the machine state onto the stack and then calls
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127 # a "C" routine to do the rest of the work. This work may result
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128 # in thread switches, and changes to the saved state. When we return
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129 # here the saved state is restored and execution is continued.
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130
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131 FUNC_START(cyg_hal_default_exception_vsr)
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133 # We come here with all register containing their
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134 # pre-exception values except:
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135 # r0_b-r7_b = saved r0-r7
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136 # r7 = vector #
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137 # spc = saved pc
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138 # ssr = saved sr
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139
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140 # Save away some registers
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141 mov r15,r1 ! entry sp
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diff changeset
142
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143 #ifdef __DEBUG
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144 mov.l $exc_state_marker,r0
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145 mov.l r0,@-r15
134
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diff changeset
146 mov.l $nCYGARC_REG_EXCEVT,r0
76
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147 mov.l @r0,r0
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148 mov.l r0,@-r15
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149 #endif
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150
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151 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
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152 add #-12,r15 ! Space for cause, gbr, and vbr
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153 #else
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154 add #-4,r15 ! Space for cause
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155
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156 stc gbr,r0 ! GBR
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157 mov.l r0,@-r15
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158 stc vbr,r0 ! VBR
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159 mov.l r0,@-r15
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160 #endif
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161
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162 stc spc,r0
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163 mov.l r0,@-r15 ! PC
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164 stc ssr,r0
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165 mov.l r0,@-r15 ! SR
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166
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167 sts.l pr,@-r15 ! PR
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168 sts.l mach,@-r15 ! mach
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169 sts.l macl,@-r15 ! macl
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170
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171 mov.l r1,@-r15 ! entry sp
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172 mov.l r14,@-r15 ! r14-r0
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173 mov.l r13,@-r15
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174 mov.l r12,@-r15
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175 mov.l r11,@-r15
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176 mov.l r10,@-r15
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177 mov.l r9,@-r15
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178 mov.l r8,@-r15
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179 stc.l r7_bank,@-r15
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180 stc.l r6_bank,@-r15
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181 stc.l r5_bank,@-r15
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182 stc.l r4_bank,@-r15
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183 stc.l r3_bank,@-r15
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184 stc.l r2_bank,@-r15
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185 stc.l r1_bank,@-r15
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186 stc.l r0_bank,@-r15
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187
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188 # After setting the SR it will be possible to use breakpoints.
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189 mov.l $nCYG_SR1,r1
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190 ldc r1,sr
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191 # ------------------------------------------------------------
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192 # Register bank has changed now.
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193
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194 #ifdef __DEBUG
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195 # It is safe to use breakpoints below this point.
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196 .globl _cyg_hal_default_exception_vsr_bp_safe
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197 _cyg_hal_default_exception_vsr_bp_safe:
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198 #endif
134
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diff changeset
199 mov.l $nCYGARC_REG_EXCEVT,r0
76
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200 mov.l @r0,r4
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201 mov #-5,r0 ! divide cause by 0x20
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202 shld r0,r4
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203 mov #CYGARC_SHREG_EVENT,r0
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204 mov.l r4,@(r0,r15) ! store decoded vector number back
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205
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206 # The entire CPU state is now stashed on the stack,
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207 # call into C to do something with it.
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208
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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209 mov r15,r4 ! R4 = register dump
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diff changeset
210
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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211 mov.l $restore_state,r0 ! get return link
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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212 lds r0,pr ! to procedure register
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213
138
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diff changeset
214 mov.l $cyg_hal_exception_handler,r0
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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215 jmp @r0 ! call C code, r4 = registers
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216 nop
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217
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218 .align 2
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219 $restore_state:
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220 .long restore_state
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221 $nCYG_SR1:
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222 .long CYG_SR
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diff changeset
223
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224 #ifdef __DEBUG
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225 $exc_state_marker:
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226 .long 0x77777770
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227 #endif
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228
138
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diff changeset
229 SYM_PTR_REF(cyg_hal_exception_handler)
76
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230
82
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diff changeset
231 #---------------------------------------------------------------------------
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232 # TLB miss entry
76
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233
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234 .org 0x400
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235 __tlb_miss:
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236 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
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237 mov #2,r7
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238 #endif
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239
134
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diff changeset
240 mov.l $nCYGARC_REG_EXCEVT,r1
76
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241 mov.l @r1,r1
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242 shlr2 r1
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243 shlr r1 ! divide cause by 0x08
138
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diff changeset
244 mov.l $hal_vsr_table3,r0
76
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245 mov.l @(r0,r1),r1
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246 jmp @r1
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247 nop
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248
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249 .align 2
138
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diff changeset
250 SYM_PTR_REFn(hal_vsr_table,3)
134
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diff changeset
251 $nCYGARC_REG_EXCEVT:
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diff changeset
252 .long CYGARC_REG_EXCEVT
76
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253
82
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diff changeset
254 #---------------------------------------------------------------------------
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diff changeset
255 # Interrupt entry
76
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256
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257 .org 0x600
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258 __interrupt:
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259
128
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diff changeset
260 #ifdef CYGHWR_HAL_SH_IRQ_HANDLE_SPURIOUS_INTERRUPTS
76
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261 # A spurious interrupt with INTEVT=0 may be caused by
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262 # clearing of BL. Those interrupts need to be ignored.
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
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263 mov.l $nCYGARC_REG_INTEVT,r0
76
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264 mov.l @r0,r0
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265 cmp/eq #0,r0
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266 bf 1f
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267 rte
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268 nop
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269 1:
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270 #endif
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271
84
489eb5632bc3 Merge from eCos master repository on 2000-04-28-18:44:39-BST
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272
76
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273 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
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274 mov #3,r7
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275 #endif
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276
138
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277 mov.l $hal_vsr_table_int,r1
76
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278 mov.l @r1,r1
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279 jmp @r1
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280 nop
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281
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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282 .align 2
138
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283 $hal_vsr_table_int:
139
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284 .long CYG_LABEL_DEFN(hal_vsr_table)+CYGNUM_HAL_VECTOR_INTERRUPT*4
76
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285
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286 #---------------------------------------------------------------------------
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287 # Common interrupt handling code.
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288
138
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289 FUNC_START(cyg_hal_default_interrupt_vsr)
76
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290
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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291 # We come here with all register containing their
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292 # pre-exception values except:
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293 # r0_b-r7_b = saved r0-r7
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294 # r7 = vector #
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295 # spc = saved pc
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296 # ssr = saved sr
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297
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298 # 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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299 mov r15,r1 ! entry sp
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300
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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301 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
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302 add #-12,r15 ! Space for cause, gbr, and vbr
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303 #else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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304 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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305
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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306 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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307 mov.l r0,@-r15
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308 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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309 mov.l r0,@-r15
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310 #endif
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diff changeset
311
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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312 stc spc,r0
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313 mov.l r0,@-r15 ! PC
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314 stc ssr,r0
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315 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
316
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
317 sts.l pr,@-r15 ! PR
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318 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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319 sts.l macl,@-r15 ! macl
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320
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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321 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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322 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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323 mov.l r13,@-r15
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324 mov.l r12,@-r15
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325 mov.l r11,@-r15
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326 mov.l r10,@-r15
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327 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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328 mov.l r8,@-r15
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329 stc.l r7_bank,@-r15
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330 stc.l r6_bank,@-r15
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331 stc.l r5_bank,@-r15
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diff changeset
332 stc.l r4_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
333 stc.l r3_bank,@-r15
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diff changeset
334 stc.l r2_bank,@-r15
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diff changeset
335 stc.l r1_bank,@-r15
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diff changeset
336 stc.l r0_bank,@-r15
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diff changeset
337
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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338 # After setting the SR it will be possible to use breakpoints.
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339 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
340 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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diff changeset
341 # ------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
342 # Register bank has changed now.
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diff changeset
343
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344 #ifdef __DEBUG
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345 # It is safe to use breakpoints below this point.
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346 .globl _cyg_hal_default_interrupt_vsr_bp_safe
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347 _cyg_hal_default_interrupt_vsr_bp_safe:
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348 #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
349
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350 # 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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351 # 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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352
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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353 # The entire CPU state is now stashed on the stack,
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354 # 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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355 # 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
356
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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357 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
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358 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
359 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
360 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
361 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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362 #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
363
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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364 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
365
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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366 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
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367
138
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diff changeset
368 mov.l $cyg_interrupt_stack_base,r0
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369 mov.l $cyg_interrupt_stack,r1
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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370 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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371 bt 2f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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372 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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373 bf 1f
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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374 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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375 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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376
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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377 #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
378
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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379 #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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380 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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381 mov r7,r5 ! arg1 = vector number
138
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diff changeset
382 mov.l $cyg_instrument,r0
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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383 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
384 jsr @r0 ! call instrument function
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 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
386 bra 1f
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 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
388
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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389 .align 2
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390 $n0301:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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391 .long 0x0301
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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diff changeset
392 SYM_PTR_REF(cyg_instrument)
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
393 1:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
394 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
395
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
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diff changeset
396 # Decode the interrupt vector, and find ISR index
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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parents: 134
diff changeset
397 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
398
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
399 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
400 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
401 ! to saved state.
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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parents: 134
diff changeset
402 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
403
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
404 #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
405 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
406 # If we are supporting Ctrl-C interrupts from GDB, we must squirrel
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
407 # away a pointer to the save interrupt state here so that we can
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
408 # plant a breakpoint at some later time.
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
409
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
410 mov.l $hal_saved_interrupt_state,r1
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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diff changeset
411 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
412 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
413
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
414 #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
415
101
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST
jlarmour
parents: 99
diff changeset
416 #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
417 # 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
418 # 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
419 # 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
420
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
421 # 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
422 # 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
423 # Ix = 15
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
424 # 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
425 # 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
426 # IRA sources:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
427 # 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
428 # IRB sources:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
429 # 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
430
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
431 # 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
432 # 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
433 # 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
434
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
435 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
436 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
437 shll2 r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
438 shll2 r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
439 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
440 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
441 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
442 #endif
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 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
445
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
446 mov r9,r0
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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diff changeset
447 mov.l $hal_interrupt_handlers,r1 ! get interrupt handler
76
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 @(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
449
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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diff changeset
450 mov.l $hal_interrupt_data,r5 ! get interrupt data
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
451 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
452
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
453 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
454 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
455
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
456 #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
457
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
458 # 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
459 # 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
460 # 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
461 # 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
462 # 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
463 # 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
464
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
465 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
466 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
467
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
468 #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
469
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
470 # 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
471 # 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
472
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
473 # 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
474 # 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
475 # 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
476 # 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
477 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
478
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
479 # 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
480 # 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
481 # 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
482
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
483 mov.l $hal_interrupt_objects,r0 ! get interrupt object table
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
484 mov.l @(r0,r9),r5 ! arg2 = interrupt object
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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parents: 134
diff changeset
485 mov.l $interrupt_end,r0
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
486 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
487 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
488 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
489 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
490
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
491 restore_state:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
492 # 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
493
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
494 # 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
495 # operation
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
496 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
497 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
498 # ------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
499 # 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
500
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
501 #
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
502 # 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
503 #
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
504
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
505 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
506 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
507 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
508 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
509 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
510 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
511 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
512 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
513 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
514 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
515 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
516 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
517 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
518 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
519 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
520 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
521 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
522
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
523 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
524 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
525 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
526
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+,r2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
528 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
529 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
530 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
531
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
532 #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
533 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
534 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
535 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
536 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
537 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
538
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
539 rte
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
540 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
541
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
542
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
543 #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
544 #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
545 ##-----------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
546 ## 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
547 ## Note: this can only be called from code running on a thread stack
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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parents: 134
diff changeset
548 FUNC_START(hal_interrupt_stack_call_pending_DSRs)
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
549 # 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
550 mov r15,r2
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
551 mov.l $cyg_interrupt_stack,r15
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
552
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
553 mov.l 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
554 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
555 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
556 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
557
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
558 # enable interrupts
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
559 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
560
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
561 # Call into kernel which will execute DSRs
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
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parents: 134
diff changeset
562 mov.l $cyg_interrupt_call_pending_DSRs,r0
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
563 jsr @r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
564 nop
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
565
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
566 # 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
567 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
568 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
569 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
570
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
571 # 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
572 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
573 rts
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 #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
577 #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
578
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
579 .align 2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
580 #ifdef __DEBUG
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
581 $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
582 .long 0x77777771
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
583 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
584
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
585 #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
586 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
587 SYM_PTR_REF(hal_saved_interrupt_state)
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
588 #endif
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
589
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
590 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
591 SYM_PTR_REF(cyg_interrupt_stack_base)
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
592 SYM_PTR_REF(cyg_interrupt_stack)
76
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 $nCYG_SR2:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
595 .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
596 $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
597 .long CYG_SR_BANK1
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
jlarmour
parents: 132
diff changeset
598 $nCYGARC_REG_INTEVT:
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
jlarmour
parents: 132
diff changeset
599 .long CYGARC_REG_INTEVT
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
jlarmour
parents: 132
diff changeset
600 #ifdef CYGARC_REG_INTEVT2
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 80
diff changeset
601 $nCYGARC_REG_INTEVT2:
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 80
diff changeset
602 .long CYGARC_REG_INTEVT2
99
97d9d85b42c0 Merge from eCos master repository on 2000-06-07-14:25:36-BST
jlarmour
parents: 84
diff changeset
603 #endif
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
604 SYM_PTR_REF(hal_interrupt_handlers)
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
605 SYM_PTR_REF(hal_interrupt_data)
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
606 SYM_PTR_REF(hal_interrupt_objects)
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
607
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
608 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
609 SYM_PTR_REF(cyg_hal_ILVL_table)
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
610 $unmasked_SR:
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 & ~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
612 #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
613
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
614
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
615 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
138
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
616 SYM_PTR_REF(cyg_interrupt_call_pending_DSRs)
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jlarmour
parents: 134
diff changeset
617 SYM_PTR_REF(interrupt_end)
139
79d72068f491 Merge from eCos master repository on 2000-11-24-16:52:55-GMT
jlarmour
parents: 138
diff changeset
618 # cyg_scheduler_sched_lock is special as it is defined as an asm alias
79d72068f491 Merge from eCos master repository on 2000-11-24-16:52:55-GMT
jlarmour
parents: 138
diff changeset
619
79d72068f491 Merge from eCos master repository on 2000-11-24-16:52:55-GMT
jlarmour
parents: 138
diff changeset
620 .globl cyg_scheduler_sched_lock
79d72068f491 Merge from eCos master repository on 2000-11-24-16:52:55-GMT
jlarmour
parents: 138
diff changeset
621 $cyg_scheduler_sched_lock: .long cyg_scheduler_sched_lock
79d72068f491 Merge from eCos master repository on 2000-11-24-16:52:55-GMT
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parents: 138
diff changeset
622
76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
623 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
624
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
625 #---------------------------------------------------------------------------
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
626 # Platform initialization (reset)
138
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jlarmour
parents: 134
diff changeset
627 FUNC_START(_reset_platform)
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT
jlarmour
parents: 134
diff changeset
628 hal_post_reset_init
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
629
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
630 #ifdef __DEBUG
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
631 mov #0,r0
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
632 mov #1,r1
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
633 mov #2,r2
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
634 mov #3,r3
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
635 mov #4,r4
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
636 mov #5,r5
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
637 mov #6,r6
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
638 mov #7,r7
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
639 mov #8,r8
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
640 mov #9,r9
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
641 mov #10,r10
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
642 mov #11,r11
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
643 mov #12,r12
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
644 mov #13,r13
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
645 mov #14,r14
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
646 #endif
134
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT
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parents: 132
diff changeset
647
105
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
648 # Call platform specific hardware initialization
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jlarmour
parents: 101
diff changeset
649 # This may include memory controller initialization. It is not
5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST
jlarmour
parents: 101
diff changeset
650 # safe to access RAM until after this point.
132
0ae0bc38e387 Merge from eCos master repository on 2000-10-31-00:30:36-GMT
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parents: 130
diff changeset
651 # Note that caches must not be enabled until after this point,
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diff changeset
652 # since we may be fiddling the FRQCR which cannot be safely done
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diff changeset
653 # by code in burst/cachable memory (errata SH7-184e).
105
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diff changeset
654 hal_hardware_init
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diff changeset
655
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diff changeset
656 # Now copy necessary bits to RAM and jump to the VMA base
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diff changeset
657
130
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diff changeset
658 #if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_SUBSETROMRAM)
105
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diff changeset
659
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diff changeset
660 # Copy data from ROM to ram
138
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diff changeset
661 mov.l $_rom_data_start,r3 ! r3 = rom start
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diff changeset
662 mov.l $_ram_data_start,r4 ! r4 = ram start
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diff changeset
663 mov.l $_ram_data_end,r5 ! r5 = ram end
105
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diff changeset
664
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diff changeset
665 cmp/eq r4,r5 ! skip if no data
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diff changeset
666 bt 2f
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diff changeset
667 1: mov.l @r3+,r0 ! get word from ROM
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diff changeset
668 mov.l r0,@r4 ! store in RAM
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jlarmour
parents: 101
diff changeset
669 add #4,r4
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jlarmour
parents: 101
diff changeset
670 cmp/eq r4,r5 ! compare
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parents: 101
diff changeset
671 bf 1b ! loop if not yet done
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diff changeset
672 2:
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diff changeset
673
130
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diff changeset
674
105
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diff changeset
675 # Jump to the proper VMA base of the code.
138
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diff changeset
676 mov.l $complete_setup,r0
105
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diff changeset
677 jmp @r0
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diff changeset
678 nop
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diff changeset
679 .align 2
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diff changeset
680
138
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diff changeset
681 SYM_PTR_REF(_rom_data_start)
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diff changeset
682 SYM_PTR_REF(_ram_data_start)
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diff changeset
683 SYM_PTR_REF(_ram_data_end)
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diff changeset
684 SYM_PTR_REF(complete_setup)
130
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diff changeset
685
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diff changeset
686
105
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diff changeset
687 #elif defined(CYG_HAL_STARTUP_ROMRAM)
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diff changeset
688
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diff changeset
689 # Copy everything to the proper VMA base and jump to it.
138
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diff changeset
690 mov.l $_vector_code_lma,r0
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diff changeset
691 mov.l $_reset,r1
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jlarmour
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diff changeset
692 mov.l $end,r2
105
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parents: 101
diff changeset
693 1: mov.l @r0+,r3 ! get word from ROM
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parents: 101
diff changeset
694 mov.l r3,@r1 ! store in RAM
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jlarmour
parents: 101
diff changeset
695 add #4,r1
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jlarmour
parents: 101
diff changeset
696 cmp/eq r1,r2 ! compare
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jlarmour
parents: 101
diff changeset
697 bf 1b ! loop if not yet done
138
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diff changeset
698 mov.l $complete_setup,r0
105
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jlarmour
parents: 101
diff changeset
699 jmp @r0
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jlarmour
parents: 101
diff changeset
700 nop
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jlarmour
parents: 101
diff changeset
701 .align 2
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parents: 101
diff changeset
702
138
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diff changeset
703 SYM_PTR_REF(_vector_code_lma)
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diff changeset
704 SYM_PTR_REF(_reset)
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parents: 134
diff changeset
705 SYM_PTR_REF(end)
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diff changeset
706 SYM_PTR_REF(complete_setup)
105
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diff changeset
707
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diff changeset
708 #else
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diff changeset
709
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diff changeset
710 # Jump to remaining setup code. Relative branch is OK since VMA=LMA.
139
79d72068f491 Merge from eCos master repository on 2000-11-24-16:52:55-GMT
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parents: 138
diff changeset
711 bra CYG_LABEL_DEFN(complete_setup)
128
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diff changeset
712 nop
105
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diff changeset
713
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diff changeset
714 #endif
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diff changeset
715
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diff changeset
716 #-----------------------------------------------------------------------------
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diff changeset
717 # Complete target initialization and setup.
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diff changeset
718 # After this point we can use absolute addressing modes and access all the
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diff changeset
719 # memory in the system.
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diff changeset
720
138
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diff changeset
721 FUNC_START(complete_setup)
105
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diff changeset
722
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diff changeset
723 # Set up monitor related stuff (vectors primarily)
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diff changeset
724 hal_mon_init
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diff changeset
725
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diff changeset
726 # set up stack
138
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diff changeset
727 mov.l $startup_stack,r15
105
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diff changeset
728
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diff changeset
729 # clear BSS
138
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diff changeset
730 mov.l $_bss_start,r3 ! r3 = start
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diff changeset
731 mov.l $_bss_end,r4 ! r4 = end
105
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parents: 101
diff changeset
732 mov #0,r0 ! r0 = 0
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diff changeset
733 1: cmp/eq r3,r4 ! skip if no bss
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diff changeset
734 bt 2f
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diff changeset
735 mov.l r0,@r3 ! store zero
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diff changeset
736 add #4,r3
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diff changeset
737 bra 1b ! loop
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diff changeset
738 nop
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diff changeset
739 2:
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diff changeset
740
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diff changeset
741 # It is now safe to call C functions which may rely on initialized
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diff changeset
742 # data.
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diff changeset
743
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diff changeset
744 # # Initialize MMU.
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diff changeset
745 # .extern hal_MMU_init
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diff changeset
746 # jsr hal_MMU_init
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diff changeset
747 # nop
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diff changeset
748
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diff changeset
749 # Enable caches
138
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diff changeset
750 mov.l $cyg_var_enable_caches,r1
105
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jlarmour
parents: 101
diff changeset
751 jsr @r1
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jlarmour
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diff changeset
752 nop
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diff changeset
753
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diff changeset
754 # Variant HALs may need to do something special before we continue
138
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diff changeset
755 mov.l $hal_variant_init,r1
105
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parents: 101
diff changeset
756 jsr @r1
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jlarmour
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diff changeset
757 nop
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diff changeset
758
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diff changeset
759 # Platform initialization
138
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diff changeset
760 mov.l $hal_platform_init,r1
105
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jlarmour
parents: 101
diff changeset
761 jsr @r1
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jlarmour
parents: 101
diff changeset
762 nop
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jlarmour
parents: 101
diff changeset
763
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diff changeset
764 # call c++ constructors
138
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diff changeset
765 mov.l $cyg_hal_invoke_constructors,r1
105
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jlarmour
parents: 101
diff changeset
766 jsr @r1
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jlarmour
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diff changeset
767 nop
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diff changeset
768
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diff changeset
769 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
138
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diff changeset
770 mov.l $initialize_stub,r1
105
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jlarmour
parents: 101
diff changeset
771 jsr @r1
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jlarmour
parents: 101
diff changeset
772 nop
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diff changeset
773 #endif
107
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parents: 105
diff changeset
774 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
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parents: 105
diff changeset
775 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
138
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diff changeset
776 mov.l $hal_ctrlc_isr_init,r1
107
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jlarmour
parents: 105
diff changeset
777 jsr @r1
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jlarmour
parents: 105
diff changeset
778 nop
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jlarmour
parents: 105
diff changeset
779 #endif
105
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parents: 101
diff changeset
780
138
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diff changeset
781 mov.l $cyg_start,r1
105
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jlarmour
parents: 101
diff changeset
782 jsr @r1
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jlarmour
parents: 101
diff changeset
783 nop
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jlarmour
parents: 101
diff changeset
784 9:
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jlarmour
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diff changeset
785 bra 9b ! if we return, loop
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jlarmour
parents: 101
diff changeset
786 nop
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jlarmour
parents: 101
diff changeset
787
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jlarmour
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diff changeset
788 .align 2
138
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diff changeset
789 SYM_PTR_REF(_bss_start)
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diff changeset
790 SYM_PTR_REF(_bss_end)
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diff changeset
791 SYM_PTR_REF(startup_stack)
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diff changeset
792 SYM_PTR_REF(cyg_hal_invoke_constructors)
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diff changeset
793 SYM_PTR_REF(cyg_var_enable_caches)
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diff changeset
794 SYM_PTR_REF(hal_variant_init)
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diff changeset
795 SYM_PTR_REF(hal_platform_init)
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diff changeset
796 SYM_PTR_REF(cyg_start)
105
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diff changeset
797
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diff changeset
798 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
138
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diff changeset
799 SYM_PTR_REF(initialize_stub)
105
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diff changeset
800 #endif
107
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diff changeset
801 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
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diff changeset
802 || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
138
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diff changeset
803 SYM_PTR_REF(hal_ctrlc_isr_init)
107
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diff changeset
804 #endif
105
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diff changeset
805
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diff changeset
806 #---------------------------------------------------------------------------
76
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diff changeset
807 # Interrupt vector tables.
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diff changeset
808 # These tables contain the isr, data and object pointers used to deliver
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diff changeset
809 # interrupts to user code.
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diff changeset
810
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diff changeset
811 .data
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812
139
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diff changeset
813 .extern CYG_LABEL_DEFN(hal_default_isr)
134
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814 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
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diff changeset
815 #define CYG_ISR_TABLE_SIZE 1
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816 #else
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diff changeset
817 #define CYG_ISR_TABLE_SIZE CYGNUM_HAL_ISR_COUNT
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818 #endif
76
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819
138
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diff changeset
820 SYM_DEF(hal_interrupt_handlers)
76
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821 .rept CYG_ISR_TABLE_SIZE
139
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diff changeset
822 .long CYG_LABEL_DEFN(hal_default_isr)
76
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diff changeset
823 .endr
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diff changeset
824
138
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825 SYM_DEF(hal_interrupt_data)
76
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diff changeset
826 .rept CYG_ISR_TABLE_SIZE
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diff changeset
827 .long 0
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diff changeset
828 .endr
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diff changeset
829
138
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830 SYM_DEF(hal_interrupt_objects)
76
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diff changeset
831 .rept CYG_ISR_TABLE_SIZE
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diff changeset
832 .long 0
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diff changeset
833 .endr
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diff changeset
834
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diff changeset
835 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
138
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836 SYM_DEF(cyg_hal_ILVL_table)
76
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diff changeset
837 # The first entries in the table have static priorities.
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diff changeset
838
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diff changeset
839 .byte 0xf // NMI
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diff changeset
840 .byte 0xf // Reserved
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diff changeset
841 .byte 0xf // LVL0
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diff changeset
842 .byte 0xe // LVL1
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diff changeset
843 .byte 0xd // LVL2
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diff changeset
844 .byte 0xc // LVL3
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diff changeset
845 .byte 0xb // LVL4
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diff changeset
846 .byte 0xa // LVL5
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diff changeset
847 .byte 0x9 // LVL6
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diff changeset
848 .byte 0x8 // LVL7
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diff changeset
849 .byte 0x7 // LVL8
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diff changeset
850 .byte 0x6 // LVL9
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diff changeset
851 .byte 0x5 // LVL10
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diff changeset
852 .byte 0x4 // LVL11
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diff changeset
853 .byte 0x3 // LVL12
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diff changeset
854 .byte 0x2 // LVL13
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diff changeset
855 .byte 0x1 // LVL14
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diff changeset
856 .byte 0xf // Reserved
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diff changeset
857
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diff changeset
858 # The rest of the table consists of programmable levels, maintained
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diff changeset
859 # by the HAL_INTERRUPT_SET_LEVEL macro.
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860 .rept (CYGNUM_HAL_ISR_MAX-CYGNUM_HAL_INTERRUPT_RESERVED_3E0)
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diff changeset
861 .byte 0xf
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862 .endr
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diff changeset
863 #endif // CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
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diff changeset
864
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865 #---------------------------------------------------------------------------
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diff changeset
866 ## Temporary interrupt stack
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diff changeset
867
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diff changeset
868 .section ".bss"
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diff changeset
869
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diff changeset
870 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
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871 .balign 16
138
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872 SYM_DEF(cyg_interrupt_stack_base)
76
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diff changeset
873 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
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diff changeset
874 .byte 0
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diff changeset
875 .endr
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diff changeset
876 .balign 16
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877 .global _cyg_interrupt_stack
138
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diff changeset
878 SYM_DEF(cyg_interrupt_stack)
76
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diff changeset
879
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
880 .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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diff changeset
881 #endif // CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
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diff changeset
882
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
883
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
884 #ifdef CYGSEM_HAL_ROM_MONITOR
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diff changeset
885 // 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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diff changeset
886 // 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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diff changeset
887 # define STARTUP_STACK_SIZE 1024
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diff changeset
888 #else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
889 # 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
890 // 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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parents:
diff changeset
891 // 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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diff changeset
892 // 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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diff changeset
893 # define STARTUP_STACK_SIZE 1024
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diff changeset
894 # else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
895 # define STARTUP_STACK_SIZE CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
896 # 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
897 #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
898
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
899 .balign 16
138
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900 SYM_DEF(startup_stack_base)
76
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diff changeset
901 .rept STARTUP_STACK_SIZE
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diff changeset
902 .byte 0
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diff changeset
903 .endr
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diff changeset
904 .balign 16
138
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diff changeset
905 SYM_DEF(startup_stack)
76
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diff changeset
906 .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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diff changeset
907
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
908 #---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
909 # end of vectors.S