t2 engine svn checkout

platformX86UNIX/x86UNIXMath_ASM.cc

@@ -0,0 +1,40 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// 
+// Copyright (c) 2001 GarageGames.Com
+// Portions Copyright (c) 2001 by Sierra Online, Inc.
+//-----------------------------------------------------------------------------
+
+#include "math/mMath.h"
+
+static S32 m_mulDivS32_ASM(S32 a, S32 b, S32 c)
+{  // a * b / c
+   S32 r;
+   
+   __asm__ __volatile__(
+      "imul  %2\n"
+      "idiv  %3\n"
+      : "=a" (r) : "a" (a) , "b" (b) , "c" (c) 
+      );
+   return r;
+}   
+
+
+static U32 m_mulDivU32_ASM(S32 a, S32 b, U32 c)
+{  // a * b / c
+   S32 r;
+   __asm__ __volatile__(
+      "mov   $0, %%edx\n"
+      "mul   %2\n"
+      "div   %3\n"
+      : "=a" (r) : "a" (a) , "b" (b) , "c" (c) 
+      );
+   return r;
+}   
+
+//------------------------------------------------------------------------------
+void mInstallLibrary_ASM()
+{
+   m_mulDivS32              = m_mulDivS32_ASM;
+   m_mulDivU32              = m_mulDivU32_ASM;
+}