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1 // Copyright (c) 2004-2010 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Device driver for kernel side stop mode debugging |
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15 // |
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16 |
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17 #ifdef __WINS__ |
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18 #error - this driver cannot be built for emulation |
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19 #endif |
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20 |
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21 #include <e32def.h> |
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22 #include <e32def_private.h> |
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23 #include <e32cmn.h> |
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24 #include <e32cmn_private.h> |
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25 #include <e32ldr.h> |
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26 #include <u32std.h> |
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27 #include <kernel/kernel.h> |
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28 #include <kernel/kern_priv.h> |
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29 #include <nk_trace.h> |
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30 #include <arm.h> |
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31 #include <kernel/cache.h> |
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32 #include <platform.h> |
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33 #include <nkern.h> |
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34 #include <u32hal.h> |
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35 #include <kernel/kdebug.h> |
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36 |
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37 |
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38 #include "debug_logging.h" |
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39 #include "d_debug_functionality.h" |
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40 #include "debug_utils.h" |
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41 #include "d_buffer_manager.h" |
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42 |
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43 |
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44 using namespace Debug; |
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45 |
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46 |
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47 DStopModeExtension* TheStopModeExtension = NULL; |
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48 |
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49 /** |
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50 This value is used as an initialiser for the size of the Stop-Mode Debug API's |
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51 default request buffer. |
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52 */ |
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53 const TInt KRequestBufferSize = 0x200; |
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54 /** |
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55 This value is used as an initialiser for the size of the Stop-Mode Debug API's |
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56 default response buffer. |
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57 */ |
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58 const TInt KResponseBufferSize = 0x1000; |
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59 |
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60 DECLARE_STANDARD_EXTENSION() |
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61 { |
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62 __KTRACE_OPT(KBOOT,Kern::Printf("Starting Stop Mode Debugger V2")); |
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63 |
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64 // get a reference to the DDebuggerInfo and to the DStopModeExtension |
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65 TSuperPage& superPage = Kern::SuperPage(); |
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66 |
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67 if(!superPage.iDebuggerInfo) |
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68 { |
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69 //kdebug has not been installed so create DDebuggerInfo using our stub constructor |
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70 superPage.iDebuggerInfo = new DDebuggerInfo(); |
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71 } |
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72 |
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73 if(!TheStopModeExtension) |
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74 { |
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75 TheStopModeExtension = new DStopModeExtension(); |
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76 } |
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77 |
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78 // create the request buffer and store a reference to it |
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79 TTag tag; |
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80 tag.iTagId = EBuffersRequest; |
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81 tag.iType = ETagTypePointer; |
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82 tag.iSize = KRequestBufferSize; |
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83 TInt err = TheDBufferManager.CreateBuffer(tag); |
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84 if(KErrNone != err) |
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85 { |
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86 return KErrNone; |
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87 } |
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88 |
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89 // create the response buffer and store a reference to it |
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90 tag.iTagId = EBuffersResponse; |
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91 tag.iSize = KResponseBufferSize; |
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92 err = TheDBufferManager.CreateBuffer(tag); |
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93 if(KErrNone != err) |
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94 { |
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95 return KErrNone; |
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96 } |
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97 // create the debug functionality buffer and store a reference to it |
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98 TDebugFunctionality df; |
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99 TUint dfSize = df.GetStopModeFunctionalityBufSize(); |
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100 tag.iTagId = EBuffersFunctionality; |
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101 tag.iSize = dfSize; |
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102 err = TheDBufferManager.CreateBuffer(tag); |
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103 if(KErrNone != err) |
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104 { |
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105 return KErrNone; |
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106 } |
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107 |
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108 // fill the functionality buffer with the functionality data and store it in |
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109 // the super page |
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110 TPtr8 dfBlockPtr((TUint8*)tag.iValue, dfSize); |
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111 if(!df.GetStopModeFunctionality(dfBlockPtr)) |
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112 { |
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113 return KErrNone; |
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114 } |
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115 TheStopModeExtension->iFunctionalityBlock = (DFunctionalityBlock*)tag.iValue; |
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116 |
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117 DStopModeExtension::Install(TheStopModeExtension); |
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118 |
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119 return KErrNone; |
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120 } |
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121 |
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122 /** |
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123 * This stub constructor is intended to be used in the case where the old deprecated |
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124 * stop mode api, kdebug, is not in place. It will initialise all values to NULL except |
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125 * the pointer to the new stop mode api extension. This allows the new stop mode solution |
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126 * to both co-exist and exist independantly of the existing one * |
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127 */ |
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128 DDebuggerInfo::DDebuggerInfo(): |
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129 iObjectOffsetTable(NULL), |
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130 iObjectOffsetTableCount(NULL), |
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131 iThreadContextTable(NULL), |
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132 iStopModeExtension(new DStopModeExtension()), |
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133 iContainers(NULL), |
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134 iCodeSegLock(NULL), |
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135 iCodeSegGlobalList(NULL), |
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136 iScheduler(NULL), |
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137 iShadowPages(NULL), |
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138 iShadowPageCount(0), |
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139 iCurrentThread(NULL), |
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140 iEventMask(), |
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141 iEventHandlerBreakpoint(0), |
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142 iMemModelObjectOffsetTable(NULL), |
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143 iMemModelObjectOffsetTableCount(0) |
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144 { |
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145 } |
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146 |
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147 /** |
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148 * Installs the stop-mode debugger extension |
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149 * Make the stop-mode API visible to a JTAG debugger, by publishing its |
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150 * existence in the superpage |
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151 */ |
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152 void DStopModeExtension::Install(DStopModeExtension* aExt) |
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153 { |
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154 Kern::SuperPage().iDebuggerInfo->iStopModeExtension = aExt; |
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155 } |