mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-20 12:44:46 +00:00
110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#include "math/mMath.h"
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#if defined(TORQUE_SUPPORTS_VC_INLINE_X86_ASM)
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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
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{
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mov eax, a
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imul b
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idiv c
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mov r, eax
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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
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{
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mov eax, a
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mov edx, 0
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mul b
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div c
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mov r, eax
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}
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return r;
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}
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static void m_sincos_ASM( F32 angle, F32 *s, F32 *c )
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{
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_asm
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{
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fld angle
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fsincos
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mov eax, c
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fstp dword ptr [eax]
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mov eax, s
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fstp dword ptr [eax]
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}
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}
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U32 Platform::getMathControlState()
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{
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U16 cw;
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_asm
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{
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fstcw cw
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}
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return cw;
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}
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void Platform::setMathControlState(U32 state)
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{
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U16 cw = state;
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_asm
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{
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fldcw cw
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}
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}
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void Platform::setMathControlStateKnown()
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{
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U16 cw = 0x27F;
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_asm
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{
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fldcw cw
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}
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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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#if defined(TORQUE_SUPPORTS_VC_INLINE_X86_ASM)
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m_mulDivS32 = m_mulDivS32_ASM;
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m_mulDivU32 = m_mulDivU32_ASM;
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m_sincos = m_sincos_ASM;
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#endif
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}
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