2010-01-02 01:28:36 +00:00
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/*
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* PROJECT: ReactOS Source Development Kit (SDK)
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* LICENSE: BSD - See COPYING.ARM in the top level directory
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2015-10-04 11:54:25 +00:00
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* FILE: ntoskrnl/include/internal/i386/callconv.s
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2010-01-02 01:28:36 +00:00
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* PURPOSE: x86 Calling Convention Helpers
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* PROGRAMMERS: ReactOS Portable Systems Group
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*/
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/* INCLUDES *******************************************************************/
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//
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// @name CountArg
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//
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// This macro counts the number of arguments in the ArgList and returns
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// the value in cCount.
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//
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// @param cCount - Count of arguments
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// @param ArgList - Argument list
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//
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// @remark None.
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//
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.macro CountArg cCount:req,ArgList:vararg
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cCount = 0
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2010-01-02 04:46:23 +00:00
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.ifnb \ArgList
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.irp arg, \ArgList
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cCount = cCount+1
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.endr
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.endif
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2010-01-02 01:28:36 +00:00
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.endm
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//
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// @name RevPush
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//
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// This macro pushes the arguments in ArgList in the reverse order
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// and returns the number of arguments in cCount
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//
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// @param cCount - Count of arguments
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// @param ArgList - Argument list
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//
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// @remark None.
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//
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.macro RevPush cCount:req,ArgList:vararg
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LOCAL index, x
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CountArg cCount, ArgList
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index = cCount
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.rept cCount
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x = 0
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.irp arg,ArgList
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x=x+1
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.ifeq index-x
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push arg
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.exitm
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.endif
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.endr
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index = index-1
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.endr
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.endm
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//
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// @name stdCallCall
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//
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// This macro performs a function call using the STDCALL convention and applies
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// the correct name decoration required based on the stack bytes
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//
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// @param Func - Function name
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// @param N - Number of stack bytes for arguments
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//
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// @remark None.
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//
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.macro stdCallCall Func:req,N:req
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.ifdef __imp_&Func&@&N
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call dword ptr [__imp_&Func&@&N]
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.else
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call Func&@&N
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.endif
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.endm
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//
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// @name stdCall
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//
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// This macro pushes the arguments required for a function call using the
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// STDCALL convention and then issues the call
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//
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// @param Func - Function name
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// @param ArgList - Argument list
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//
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// @remark None.
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//
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.macro stdCall Func:req,ArgList:vararg
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LOCAL Bytes
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RevPush Bytes,ArgList
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Bytes = Bytes*4
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stdCallCall Func, %(Bytes)
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.endm
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