139 lines
3.5 KiB
C++
Executable File
139 lines
3.5 KiB
C++
Executable File
//-----------------------------------------------------------------------------
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// Torque Game Engine
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// Copyright (C) GarageGames.com, Inc.
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//-----------------------------------------------------------------------------
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#include "platformMacCarb/platformMacCarb.h"
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#include "platform/platform.h"
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#include "console/console.h"
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#include "math/mMath.h"
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#include "terrain/blender.h"
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extern void mInstallLibrary_C();
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extern void mInstallLibrary_Vec();
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extern void mInstall_Library_SSE();
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extern void mInstallLibrary_ASM();
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//--------------------------------------
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ConsoleFunction( MathInit, void, 1, 10, "([DETECT|C|VEC|SSE])")
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{
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U32 properties = CPU_PROP_C; // C entensions are always used
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if (argc == 1)
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{
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Math::init(0);
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return;
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}
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for (argc--, argv++; argc; argc--, argv++)
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{
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if (dStricmp(*argv, "DETECT") == 0) {
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Math::init(0);
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return;
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}
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if (dStricmp(*argv, "C") == 0) {
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properties |= CPU_PROP_C;
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continue;
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}
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if (dStricmp(*argv, "VEC") == 0) {
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properties |= CPU_PROP_ALTIVEC;
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continue;
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}
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if (dStricmp(*argv, "SSE") == 0) {
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properties |= CPU_PROP_SSE;
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continue;
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}
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Con::printf("Error: MathInit(): ignoring unknown math extension '%s'", *argv);
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}
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Math::init(properties);
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}
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//------------------------------------------------------------------------------
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void Math::init(U32 properties)
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{
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if (!properties)
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// detect what's available
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properties = Platform::SystemInfo.processor.properties;
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else
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// Make sure we're not asking for anything that's not supported
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properties &= Platform::SystemInfo.processor.properties;
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Con::printf("Math Init:");
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Con::printf(" Installing Standard C extensions");
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mInstallLibrary_C();
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if(Platform::SystemInfo.processor.type == CPU_X86Compatible)
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{
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Con::printf(" Installing Assembly extensions");
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mInstallLibrary_ASM();
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}
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#if defined(__VEC__)
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Blender::smUseVecBlender = false;
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if (properties & CPU_PROP_ALTIVEC)
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{
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Con::printf(" Installing Altivec extensions");
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mInstallLibrary_Vec();
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Blender::smUseVecBlender = true;
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}
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#endif
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if (properties & CPU_PROP_SSE)
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{
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Con::printf(" Installing SSE extensions");
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mInstall_Library_SSE();
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}
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Con::printf(" ");
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}
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//------------------------------------------------------------------------------
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F32 Platform::getRandom()
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{
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return platState.platRandom.randF();
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}
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//-----------------------------------------------------------------------------
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// Intel asm math
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//-----------------------------------------------------------------------------
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#if defined(i386)
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static S32 m_mulDivS32_ASM(S32 a, S32 b, S32 c)
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{ // a * b / c
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S32 r;
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__asm__ __volatile__(
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"imul %2\n"
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"idiv %3\n"
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: "=a" (r) : "a" (a) , "b" (b) , "c" (c)
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);
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return r;
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}
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static U32 m_mulDivU32_ASM(S32 a, S32 b, U32 c)
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{ // a * b / c
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S32 r;
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__asm__ __volatile__(
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"mov $0, %%edx\n"
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"mul %2\n"
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"div %3\n"
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: "=a" (r) : "a" (a) , "b" (b) , "c" (c)
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);
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return r;
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}
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#endif
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//------------------------------------------------------------------------------
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void mInstallLibrary_ASM()
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{
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// stubbed out for ppc builds
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#if defined(i386)
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m_mulDivS32 = m_mulDivS32_ASM;
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m_mulDivU32 = m_mulDivU32_ASM;
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#endif
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}
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