Wow64.dll, which is the core interface to the Windows NT kernel that translates between 32-bit and 64-bit calls, including pointer and call stack manipulations;
Wow64win.dll, which provides the appropriate entry points for 32-bit applications; and
Wow64cpu.dll, which takes care of switching the processor from 32-bit to 64-bit mode.
Wow64win.dllto set up the emulation of x86 instructions within the Itanium 2's unique instruction set. This emulation is a more computationally expensive task than the
Wow64win.dll's functions on the x64 architecture, which switches the processor hardware from its 64-bit mode to compatibility mode when it's time to execute a 32-bit thread, and then handles the switch back to 64-bit mode. No emulation is required for WOW64 on x64.
The operating system uses the %SystemRoot%system32 directory for its 64-bit library and executable files. This is done for backwards compatibility reasons as many legacy applications are hardcoded to use that path. When executing 32-bit applications, WOW64 redirects requests for DLLs from that directory to %SystemRoot%SysWOW64, which contains legacy libraries and executables.
Assessing the engineering impact of Microsoft's Windows Vista: more than five years in the making, Microsoft's new operating system will benefit researchers-depending on the area of specialty.(TEST & MEASUREMENT)
Jan 01, 2007; Engineers and scientists increasingly use commercial off-the-shelf PC technology in both research and industry to bring new...
64-bit operating systems enter the mainstream: a look at the impact of Microsoft Windows Vista x64 on engineering and scientific applications.(OPERATING SYSTEMS--MIGRATION)
Feb 01, 2007; Scientists and engineers increasingly use commercial off-the-shelf PC technology in both research and industry to bring new...