shithub: freetype+ttf2subf

Info  •  Files  •  Log  •  Branches

Add inline assembly version of FT_MulFix for MSVC.

* include/freetype/config/ftconfig.h: Ported the FT_MulFix_i386
function from GNU inline assembly syntax (see #ifdef __GNUC__ block
above) to MASM syntax for Microsoft Visual C++.

git/fs: mount .git/fs: mount/attach disallowed

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,5 +1,13 @@

 2011-02-13  Bradley Grainger  <[email protected]>

+	Add inline assembly version of FT_MulFix for MSVC.

+

+	* include/freetype/config/ftconfig.h: Ported the FT_MulFix_i386

+	function from GNU inline assembly syntax (see #ifdef __GNUC__ block

+	above) to MASM syntax for Microsoft Visual C++.

+

+2011-02-13  Bradley Grainger  <[email protected]>

+

 	Add project and solution files in Visual Studio 2010 format.

 	* builds/win32/.gitignore: Ignore user-specific cache files.

--- a/include/freetype/config/ftconfig.h

+++ b/include/freetype/config/ftconfig.h

@@ -395,6 +395,43 @@

 #endif /* __GNUC__ */

+

+#ifdef _MSC_VER /* Visual C++ */

+

+#ifdef _M_IX86

+

+#define FT_MULFIX_ASSEMBLER  FT_MulFix_i386

+

+  /* documentation is in freetype.h */

+

+  static __inline FT_Int32

+  FT_MulFix_i386( FT_Int32  a,

+                  FT_Int32  b )

+  {

+    register FT_Int32  result;

+

+    __asm

+    {

+      mov eax, a

+      mov edx, b

+      imul edx

+      mov ecx, edx

+      sar ecx, 31

+      add ecx, 8000h

+      add eax, ecx

+      adc edx, 0

+      shr eax, 16

+      shl edx, 16

+      add eax, edx

+      mov result, eax

+    }

+    return result;

+  }

+

+#endif /* _M_IX86 */

+

+#endif /* _MSC_VER */

+

 #endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */