win_shared.c File Reference

#include "../game/q_shared.h"
#include "../qcommon/qcommon.h"
#include "win_local.h"
#include <lmerr.h>
#include <lmcons.h>
#include <lmwksta.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <direct.h>
#include <io.h>
#include <conio.h>

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Functions
void	CPUID (int func, unsigned regs[4])
long	fastftol (float f)
int	Is3DNOW (void)
int	IsKNI (void)
int	IsMMX (void)
int	IsPentium (void)
char *	Sys_DefaultHomePath (void)
char *	Sys_DefaultInstallPath (void)
char *	Sys_GetCurrentUser (void)
int	Sys_GetProcessorId (void)
int	Sys_Milliseconds (void)
void	Sys_SnapVector (float *v)
Variables
int	sys_timeBase

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Function Documentation

void CPUID (  int  func, unsigned  regs[4] )  [static]

Definition at line 111 of file win_shared.c. References fh, and func(). Referenced by Is3DNOW(), IsKNI(), and IsMMX(). { unsigned regEAX, regEBX, regECX, regEDX; #ifndef __VECTORC __asm mov eax, func __asm __emit 00fh __asm __emit 0a2h __asm mov regEAX, eax __asm mov regEBX, ebx __asm mov regECX, ecx __asm mov regEDX, edx regs[0] = regEAX; regs[1] = regEBX; regs[2] = regECX; regs[3] = regEDX; #else regs[0] = 0; regs[1] = 0; regs[2] = 0; regs[3] = 0; #endif }

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long fastftol (  float  f  )

Definition at line 61 of file win_shared.c. References f. { static int tmp; __asm fld f __asm fistp tmp __asm mov eax, tmp }

int Is3DNOW (  void   )  [static]

Definition at line 169 of file win_shared.c. References CPUID(). Referenced by Sys_GetProcessorId(). { unsigned regs[4]; char pstring[16]; char processorString[13]; // get name of processor CPUID( 0, ( unsigned int * ) pstring ); processorString[0] = pstring[4]; processorString[1] = pstring[5]; processorString[2] = pstring[6]; processorString[3] = pstring[7]; processorString[4] = pstring[12]; processorString[5] = pstring[13]; processorString[6] = pstring[14]; processorString[7] = pstring[15]; processorString[8] = pstring[8]; processorString[9] = pstring[9]; processorString[10] = pstring[10]; processorString[11] = pstring[11]; processorString[12] = 0; // REMOVED because you can have 3DNow! on non-AMD systems // if ( strcmp( processorString, "AuthenticAMD" ) ) // return qfalse; // check AMD-specific functions CPUID( 0x80000000, regs ); if ( regs[0] < 0x80000000 ) return qfalse; // bit 31 of EDX denotes 3DNOW! support CPUID( 0x80000001, regs ); if ( regs[3] & ( 1 << 31 ) ) return qtrue; return qfalse; }

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int IsKNI (  void   )  [static]

Definition at line 208 of file win_shared.c. References CPUID(). Referenced by Sys_GetProcessorId(). { unsigned regs[4]; // get CPU feature bits CPUID( 1, regs ); // bit 25 of EDX denotes KNI existence if ( regs[3] & ( 1 << 25 ) ) return qtrue; return qfalse; }

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int IsMMX (  void   )  [static]

Definition at line 222 of file win_shared.c. References CPUID(). Referenced by Sys_GetProcessorId(). { unsigned regs[4]; // get CPU feature bits CPUID( 1, regs ); // bit 23 of EDX denotes MMX existence if ( regs[3] & ( 1 << 23 ) ) return qtrue; return qfalse; }

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int IsPentium (  void   )  [static]

Definition at line 136 of file win_shared.c. References err(), and test(). Referenced by Sys_GetProcessorId(). { __asm { pushfd // save eflags pop eax test eax, 0x00200000 // check ID bit jz set21 // bit 21 is not set, so jump to set_21 and eax, 0xffdfffff // clear bit 21 push eax // save new value in register popfd // store new value in flags pushfd pop eax test eax, 0x00200000 // check ID bit jz good jmp err // cpuid not supported set21: or eax, 0x00200000 // set ID bit push eax // store new value popfd // store new value in EFLAGS pushfd pop eax test eax, 0x00200000 // if bit 21 is on jnz good jmp err } err: return qfalse; good: return qtrue; }

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char* Sys_DefaultHomePath (  void   )

Definition at line 298 of file win_shared.c. Referenced by FS_Startup(). { return NULL; }

char* Sys_DefaultInstallPath (  void   )

Definition at line 302 of file win_shared.c. References Sys_Cwd(). Referenced by FS_Startup(). { return Sys_Cwd(); }

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char* Sys_GetCurrentUser (  void   )

Definition at line 281 of file win_shared.c. References strcpy(). Referenced by Sys_Init(). { static char s_userName[1024]; unsigned long size = sizeof( s_userName ); if ( !GetUserName( s_userName, &size ) ) strcpy( s_userName, "player" ); if ( !s_userName[0] ) { strcpy( s_userName, "player" ); } return s_userName; }

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int Sys_GetProcessorId (  void   )

Definition at line 235 of file win_shared.c. References Is3DNOW(), IsKNI(), IsMMX(), and IsPentium(). Referenced by Sys_Init(). { #if defined _M_ALPHA return CPUID_AXP; #elif !defined _M_IX86 return CPUID_GENERIC; #else // verify we're at least a Pentium or 486 w/ CPUID support if ( !IsPentium() ) return CPUID_INTEL_UNSUPPORTED; // check for MMX if ( !IsMMX() ) { // Pentium or PPro return CPUID_INTEL_PENTIUM; } // see if we're an AMD 3DNOW! processor if ( Is3DNOW() ) { return CPUID_AMD_3DNOW; } // see if we're an Intel Katmai if ( IsKNI() ) { return CPUID_INTEL_KATMAI; } // by default we're functionally a vanilla Pentium/MMX or P2/MMX return CPUID_INTEL_MMX; #endif }

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int Sys_Milliseconds (  void   )

Definition at line 42 of file win_shared.c. References qboolean, sys_curtime, and sys_timeBase. { int sys_curtime; static qboolean initialized = qfalse; if (!initialized) { sys_timeBase = timeGetTime(); initialized = qtrue; } sys_curtime = timeGetTime() - sys_timeBase; return sys_curtime; }

void Sys_SnapVector (  float *  v  )

Definition at line 68 of file win_shared.c. References f, and v. Referenced by CL_CgameSystemCalls(), and SV_GameSystemCalls(). { int i; float f; f = *v; __asm fld f; __asm fistp i; *v = i; v++; f = *v; __asm fld f; __asm fistp i; *v = i; v++; f = *v; __asm fld f; __asm fistp i; *v = i; /* *v = fastftol(*v); v++; *v = fastftol(*v); v++; *v = fastftol(*v); */ }

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Variable Documentation

int sys_timeBase

Definition at line 41 of file win_shared.c.

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