x64.nsh

; ---------------------
;       x64.nsh
; ---------------------
;
; A few simple macros to handle installations on x64 machines.
;
; RunningX64 checks if the installer is running on a 64-bit OS.
; IsWow64 checks if the installer is a 32-bit application running on a 64-bit OS.
;
;   ${If} ${RunningX64}
;     MessageBox MB_OK "running on x64"
;   ${EndIf}
;
; DisableX64FSRedirection disables file system redirection.
; EnableX64FSRedirection enables file system redirection.
;
;   SetOutPath $SYSDIR
;   ${DisableX64FSRedirection}
;   File some.dll # extracts to C:\Windows\System32
;   ${EnableX64FSRedirection}
;   File some.dll # extracts to C:\Windows\SysWOW64
;

!ifndef ___X64__NSH___
!define ___X64__NSH___

!include LogicLib.nsh


!define IsWow64 `"" IsWow64 ""`
!macro _IsWow64 _a _b _t _f
  !insertmacro _LOGICLIB_TEMP
  System::Call kernel32::GetCurrentProcess()p.s
  System::Call kernel32::IsWow64Process(ps,*i0s)
  Pop $_LOGICLIB_TEMP
  !insertmacro _!= $_LOGICLIB_TEMP 0 `${_t}` `${_f}`
!macroend


!define RunningX64 `"" RunningX64 ""`
!macro _RunningX64 _a _b _t _f 
  !if ${NSIS_PTR_SIZE} > 4
    !insertmacro LogicLib_JumpToBranch `${_t}` `${_f}`
  !else
    !insertmacro _IsWow64 `${_a}` `${_b}` `${_t}` `${_f}`
  !endif
!macroend


!define DisableX64FSRedirection "!insertmacro DisableX64FSRedirection"
!macro DisableX64FSRedirection
  System::Call kernel32::Wow64EnableWow64FsRedirection(i0)
!macroend

!define EnableX64FSRedirection "!insertmacro EnableX64FSRedirection"
!macro EnableX64FSRedirection
  System::Call kernel32::Wow64EnableWow64FsRedirection(i1)
!macroend


!endif # !___X64__NSH___