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2023-08-07 19:29:24 +08:00
commit 34d6c5d489
4832 changed files with 1389451 additions and 0 deletions
--- a/CrySystem/CPUDetect.h
+++ b/CrySystem/CPUDetect.h
@@ -0,0 +1,163 @@
+/*=============================================================================
+  CPUDetect.cpp : CPU detection.
+  Copyright 2001 Crytek Studios. All Rights Reserved.
+
+  Revision history:
+    * Created by Honitch Andrey
+
+=============================================================================*/
+
+#ifndef __CPUDETECT_H__
+#define __CPUDETECT_H__
+
+//-------------------------------------------------------
+/// Cpu class
+//-------------------------------------------------------
+
+#define MAX_CPU	32
+
+/// Cpu Features
+#define CFI_FPUEMULATION 1
+#define CFI_MMX   2
+#define CFI_3DNOW 4
+#define CFI_SSE   8
+#define CFI_SSE2  0x10
+
+/// Type of Cpu Vendor.
+enum ECpuVendor
+{
+  eCVendor_Unknown,
+  eCVendor_Intel,
+  eCVendor_Cyrix,
+  eCVendor_AMD,
+  eCVendor_Centaur,
+  eCVendor_NexGen,
+  eCVendor_UMC,
+  eCVendor_M68K
+};
+
+/// Type of Cpu Model.
+enum ECpuModel
+{
+  eCpu_Unknown,
+
+  eCpu_8086,
+  eCpu_80286,
+  eCpu_80386,
+  eCpu_80486,
+  eCpu_Pentium,
+  eCpu_PentiumPro,
+  eCpu_Pentium2,
+  eCpu_Pentium3,
+  eCpu_Pentium4,
+  eCpu_Pentium2Xeon,
+  eCpu_Pentium3Xeon,
+  eCpu_Celeron,
+  eCpu_CeleronA,
+
+  eCpu_Am5x86,
+  eCpu_AmK5,
+  eCpu_AmK6,
+  eCpu_AmK6_2,
+  eCpu_AmK6_3,
+  eCpu_AmK6_3D,
+  eCpu_AmAthlon,
+  eCpu_AmDuron,
+
+  eCpu_CyrixMediaGX,
+  eCpu_Cyrix6x86,
+  eCpu_CyrixGXm,
+  eCpu_Cyrix6x86MX,
+
+  eCpu_CenWinChip,
+  eCpu_CenWinChip2,
+};
+
+struct SCpu
+{
+  ECpuVendor meVendor;
+  ECpuModel meModel; 
+  unsigned long mFeatures;
+  bool mbSerialPresent;
+  char  mSerialNumber[30];
+  int mFamily;
+  int mModel;
+  int mStepping;
+  char mVendor[64];
+  char mCpuType[64];
+  char mFpuType[64];
+  int mSpeed;
+  double m_SecondsPerCycle;
+};
+
+class CCpuFeatures
+{
+private:
+  int m_NumSystemProcessors;
+  int m_NumAvailProcessors;
+  bool m_bOS_ISSE;
+  bool m_bOS_ISSE_EXCEPTIONS;
+public:
+
+  SCpu m_Cpu[MAX_CPU];
+
+public:
+  CCpuFeatures()
+  {
+    m_NumSystemProcessors = 0;
+    m_NumAvailProcessors  = 0;
+    m_bOS_ISSE = 0;
+    m_bOS_ISSE_EXCEPTIONS = 0;
+  }
+  
+  void Detect(void);
+  bool hasSSE() { return (m_Cpu[0].mFeatures & CFI_SSE) != 0; }
+  bool hasSSE2() { return (m_Cpu[0].mFeatures & CFI_SSE2) != 0; }
+  bool has3DNow() { return (m_Cpu[0].mFeatures & CFI_3DNOW) != 0; }
+  bool hasMMX() { return (m_Cpu[0].mFeatures & CFI_MMX) != 0; }
+};
+
+#if defined(WIN64) || defined(LINUX64)
+inline bool IsAMD64()
+{
+#ifdef _AMD64_
+	return true;
+#else
+#error not supported here
+#endif
+}
+#else
+inline bool
+IsAMD64()
+{
+#if defined(LINUX32)
+	return false;
+#else
+	_asm
+	{
+		// make sure cpuid is available
+		pushfd					// save EFLAGS
+		pop eax					// store EFLAGS in EAX
+		mov ebx, eax			// save in EBX for later testing
+		xor eax, 00200000h		// toggle bit 21
+		push eax				// push to stack
+		popfd					// save changed EAX to EFLAGS
+		pushfd					// push EFLAGS to TOS
+		pop eax					// store EFLAGS in EAX
+		cmp eax, ebx			// see if bit 21 has changed
+		mov eax, 0				// clear eax to return "false"
+		jz QUIT					// if no change, no CPUID
+
+		// perform AMD64 detection
+		mov eax, 0x80000001		// load argument "Processor Signature and AMD Features" to call cpuid
+		cpuid					// call cpuid
+		mov eax, edx			// edx contains "AMD Feature Support" flags
+		shr eax, 29				// test bit 29 (support for "Long Mode")
+		and eax, 0x00000001		// mask out bit for proper return value
+QUIT:
+	}
+#endif
+}
+#endif // WIN32
+
+#endif