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1 // Copyright (c) 1998-2009 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 // e32\include\nkern\win32\nk_plat.h |
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15 // |
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16 // WARNING: This file contains some APIs which are internal and are subject |
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17 // to change without notice. Such APIs should therefore not be used |
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18 // outside the Kernel and Hardware Services package. |
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19 // |
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20 |
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21 /** |
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22 @file |
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23 @internalComponent |
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24 */ |
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25 |
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26 #ifndef __NK_WIN32_H__ |
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27 #define __NK_WIN32_H__ |
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28 |
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29 #define _CRTIMP // we want to use the win32 static runtime library |
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30 |
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31 #define WIN32_LEAN_AND_MEAN |
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32 #define _WIN32_WINNT 0x0400 |
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33 #include <windows.h> |
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34 |
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35 typedef void (*TExcHandler)(TAny*,TAny*); |
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36 |
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37 struct TWin32ExcInfo |
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38 { |
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39 enum {EExcInKernel = 0x1}; |
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40 public: |
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41 TExcHandler iHandler; |
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42 TAny* iParam[2]; |
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43 TUint iFlags; |
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44 // ExcType, iExcId, iFaultAddress, iEax, iEcx, iEdx, iEbx, iEsp, iEbp, iEsi, iEdi, |
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45 // iSs, iDs, iEs, iFs, iGs, iEflags, iEip, iCs |
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46 TUint32 iExcType; // filled in by EPOC |
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47 TUint32 iExcCode; |
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48 TUint32 iExcDataAddress; |
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49 TUint32 iEax; |
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50 TUint32 iEcx; |
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51 TUint32 iEdx; |
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52 TUint32 iEbx; |
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53 TUint32 iEsp; |
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54 TUint32 iEsi; |
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55 TUint32 iEdi; |
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56 TUint32 iSs; |
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57 TUint32 iDs; |
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58 TUint32 iEs; |
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59 TUint32 iFs; |
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60 TUint32 iGs; |
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61 TUint32 iEflags; |
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62 TUint32 iCs; |
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63 TUint32 iEbp; |
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64 TUint32 iEip; |
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65 }; |
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66 |
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67 enum TEmulThreadType |
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68 { |
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69 EThreadEvent, // an 'interrupt' thread, interacts with Win32 events |
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70 EThreadNKern // a nKern thread, identified by a NThread control block |
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71 }; |
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72 |
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73 class NThread : public NThreadBase |
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74 { |
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75 public: |
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76 typedef void (*TDivert)(); |
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77 enum TWakeup {ERelease,EResume,EResumeLocked,EIdle,EEscaped,EResumeDiverted}; |
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78 enum TSelectCpu {ECpuAll=-1,ECpuSingle=-2}; |
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79 public: |
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80 TInt Create(SNThreadCreateInfo& aInfo, TBool aInitial); |
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81 void Stillborn(); |
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82 void DoForceExit(); |
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83 // |
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84 IMPORT_C static void Idle(); |
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85 IMPORT_C static void SetProperties(TBool aTrace, TInt aCpu); |
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86 TBool WakeUp(); |
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87 TBool IsSafeToPreempt(); |
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88 void Divert(TDivert aDivert); |
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89 void ApplyDiversion(); |
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90 |
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91 private: |
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92 static DWORD WINAPI StartThread(LPVOID aParam); |
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93 // |
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94 static void ExitSync(); |
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95 static void ExitAsync(); |
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96 // |
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97 static void Exception(); |
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98 static LONG WINAPI ExceptionFilter(EXCEPTION_POINTERS* aExc); |
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99 |
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100 public: |
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101 static void Diverted(); |
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102 // Has to be accessible to code user-side via emulator.lib |
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103 static DWORD ExceptionHandler(EXCEPTION_RECORD* aException, CONTEXT* aContext); |
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104 |
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105 public: |
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106 HANDLE iWinThread; |
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107 DWORD iWinThreadId; |
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108 HANDLE iScheduleLock; // event used for scheduling interlock |
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109 TBool iDiverted; // flag to indicate that the thread is being diverted |
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110 TDivert iDivert; // function to invoke after reschedule, may be null |
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111 TAny* iDivertReturn; // return address from diversion |
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112 TInt iInKernel; // flag to indicate if the thread is running 'in' the kernel |
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113 TWakeup iWakeup; // indicates how to wake up the thread |
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114 TLinAddr iUserStackBase; |
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115 }; |
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116 |
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117 IMPORT_C HANDLE CreateWin32Thread(TEmulThreadType aType, LPTHREAD_START_ROUTINE aThreadFunc, LPVOID aPtr, TBool aRun); |
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118 IMPORT_C void StartOfInterrupt(); |
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119 IMPORT_C void EndOfInterrupt(); |
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120 |
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121 void SchedulerInit(NThread& aInit); |
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122 void SchedulerRegister(NThread& aSelf); |
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123 NThread* SchedulerThread(); |
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124 NThread& CheckedCurrentThread(); |
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125 void SchedulerLock(); |
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126 void SchedulerUnlock(); |
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127 void SchedulerEscape(); |
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128 void SchedulerReenter(); |
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129 void Win32FindNonPreemptibleFunctions(); |
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130 |
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131 inline void EnterKernel(TBool aCheck=TRUE) |
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132 { |
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133 if (++CheckedCurrentThread().iInKernel==1 && aCheck) |
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134 { |
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135 NThread& t = CheckedCurrentThread(); |
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136 __NK_ASSERT_ALWAYS(t.iCsCount==0); |
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137 __NK_ASSERT_ALWAYS(t.iHeldFastMutex==0); |
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138 __NK_ASSERT_ALWAYS(TheScheduler.iKernCSLocked==0); |
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139 } |
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140 } |
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141 |
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142 void LeaveKernel(); |
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143 |
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144 IMPORT_C TInt __fastcall Dispatch(TInt aFunction, TInt* aArgs); |
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145 |
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146 typedef TInt (__cdecl *TExecHandler)(TInt,TInt,TInt,TInt); |
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147 typedef void (__cdecl *TPreprocessHandler)(TInt*,TUint32); |
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148 |
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149 // Emulator nKern scheduling data |
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150 class Win32Interrupt |
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151 { |
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152 public: |
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153 void Init(); |
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154 TInt Mask(); |
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155 void Restore(TInt aLevel); |
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156 void Begin(); |
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157 void End(); |
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158 inline TBool InInterrupt() const |
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159 {return iInterrupted!=0;} |
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160 void ForceReschedule(); |
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161 inline TBool InterruptsStatus(TBool aRequest) const |
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162 {return aRequest?(iLevel==0):(iLevel!=0);} |
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163 private: |
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164 static void Reschedule(TAny*); |
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165 private: |
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166 TInt iLock; |
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167 HANDLE iQ; |
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168 DWORD iOwner; |
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169 TInt iLevel; |
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170 TBool iRescheduleOnExit; |
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171 NThread* iInterrupted; |
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172 NThread iScheduler; |
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173 }; |
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174 |
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175 extern TBool Win32AtomicSOAW; // flag to indicate availability of SignalObjectAndWait() API |
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176 extern TBool Win32TraceThreadId; |
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177 extern TInt Win32SingleCpu; |
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178 extern Win32Interrupt Interrupt; |
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179 |
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180 // Emulator nKern exception data |
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181 extern TAny* Win32ExcAddress; |
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182 extern TAny* Win32ExcDataAddress; |
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183 extern TUint Win32ExcCode; |
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184 |
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185 void FastCounterInit(); |
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186 |
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187 #endif |