// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// e32\common\x86\atomic_skeleton.h

// 

//

/**

 Read an 8/16/32 bit quantity with acquire semantics

 @param	a	Address of data to be read - must be naturally aligned

 @return		The value read

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_load_acq)(const volatile TAny* /*a*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __A_REG__ ", [ecx] ");

#ifdef __BARRIERS_NEEDED__

	asm("lock add dword ptr [esp], 0 ");

#endif

	asm("ret ");

	}

/** Write an 8/16/32 bit quantity with release semantics

	@param	a	Address of data to be written - must be naturally aligned

	@param	v	The value to be written

	@return		The value written

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_store_rel)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __D_REG__ ", [esp+8] ");

	asm("mov " __A_REG__ ", " __D_REG__ );

	asm(__LOCK__ "xchg [ecx], " __D_REG__ );

	asm("ret ");

	}

/** Write an 8/16/32 bit quantity with full barrier semantics

	@param	a	Address of data to be written - must be naturally aligned

	@param	v	The value to be written

	@return		The value written

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_store_ord)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_store_rel);

	}

/** Write an 8/16/32 bit quantity to memory and return the original value of the memory.

	Relaxed ordering.

	@param	a	Address of data to be written - must be naturally aligned

	@param	v	The value to be written

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_swp_rlx)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_swp_ord);

	}

/** Write an 8/16/32 bit quantity to memory and return the original value of the memory.

	Acquire semantics.

	@param	a	Address of data to be written - must be naturally aligned

	@param	v	The value to be written

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_swp_acq)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_swp_ord);

	}

/** Write an 8/16/32 bit quantity to memory and return the original value of the memory.

	Release semantics.

	@param	a	Address of data to be written - must be naturally aligned

	@param	v	The value to be written

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_swp_rel)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_swp_ord);

	}

/** Write an 8/16/32 bit quantity to memory and return the original value of the memory.

	Full barrier semantics.

	@param	a	Address of data to be written - must be naturally aligned

	@param	v	The value to be written

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_swp_ord)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __A_REG__ ", [esp+8] ");

	asm(__LOCK__ "xchg [ecx], " __A_REG__ );

	asm("ret ");

	}

/** 8/16/32 bit compare and swap, relaxed ordering.

	Atomically performs the following operation:

		if (*a == *q)	{ *a = v; return TRUE; }

		else			{ *q = *a; return FALSE; }

	@param	a	Address of data to be written - must be naturally aligned

	@param	q	Address of location containing expected value

	@param	v	The new value to be written if the old value is as expected

	@return		TRUE if *a was updated, FALSE otherwise

*/

EXPORT_C __NAKED__ TBool		__fname__(__e32_atomic_cas_rlx)(volatile TAny* /*a*/, __TUintX__* /*q*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_cas_ord);

	}

/** 8/16/32 bit compare and swap, acquire semantics.

	Atomically performs the following operation:

		if (*a == *q)	{ *a = v; return TRUE; }

		else			{ *q = *a; return FALSE; }

	@param	a	Address of data to be written - must be naturally aligned

	@param	q	Address of location containing expected value

	@param	v	The new value to be written if the old value is as expected

	@return		TRUE if *a was updated, FALSE otherwise

*/

EXPORT_C __NAKED__ TBool		__fname__(__e32_atomic_cas_acq)(volatile TAny* /*a*/, __TUintX__* /*q*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_cas_ord);

	}

/** 8/16/32 bit compare and swap, release semantics.

	Atomically performs the following operation:

		if (*a == *q)	{ *a = v; return TRUE; }

		else			{ *q = *a; return FALSE; }

	@param	a	Address of data to be written - must be naturally aligned

	@param	q	Address of location containing expected value

	@param	v	The new value to be written if the old value is as expected

	@return		TRUE if *a was updated, FALSE otherwise

*/

EXPORT_C __NAKED__ TBool		__fname__(__e32_atomic_cas_rel)(volatile TAny* /*a*/, __TUintX__* /*q*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_cas_ord);

	}

/** 8/16/32 bit compare and swap, full barrier semantics.

	Atomically performs the following operation:

		if (*a == *q)	{ *a = v; return TRUE; }

		else			{ *q = *a; return FALSE; }

	@param	a	Address of data to be written - must be naturally aligned

	@param	q	Address of location containing expected value

	@param	v	The new value to be written if the old value is as expected

	@return		TRUE if *a was updated, FALSE otherwise

*/

EXPORT_C __NAKED__ TBool		__fname__(__e32_atomic_cas_ord)(volatile TAny* /*a*/, __TUintX__* /*q*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov eax, [esp+8] ");

	asm("mov " __D_REG__ ", [esp+12] ");

	asm("mov " __A_REG__ ", [eax] ");

	asm(__LOCK__ "cmpxchg [ecx], " __D_REG__ );

	asm("jne short 2f ");

	asm("mov eax, 1 ");

	asm("ret ");

	asm("2: ");

	asm("mov edx, [esp+8] ");

	asm("mov [edx], " __A_REG__ );

	asm("xor eax, eax ");

	asm("ret ");

	}

/** 8/16/32 bit atomic add, relaxed ordering.

	Atomically performs the following operation:

		oldv = *a; *a = oldv + v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be added

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_add_rlx)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_add_ord);

	}

/** 8/16/32 bit atomic add, acquire semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv + v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be added

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_add_acq)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_add_ord);

	}

/** 8/16/32 bit atomic add, release semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv + v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be added

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_add_rel)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_add_ord);

	}

/** 8/16/32 bit atomic add, full barrier semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv + v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be added

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_add_ord)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __A_REG__ ", [esp+8] ");

	asm(__LOCK__ "xadd [ecx], " __A_REG__ );

	asm("ret ");

	}

/** 8/16/32 bit atomic bitwise logical AND, relaxed ordering.

	Atomically performs the following operation:

		oldv = *a; *a = oldv & v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ANDed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_and_rlx)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_and_ord);

	}

/** 8/16/32 bit atomic bitwise logical AND, acquire semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv & v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ANDed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_and_acq)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_and_ord);

	}

/** 8/16/32 bit atomic bitwise logical AND, release semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv & v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ANDed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_and_rel)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_and_ord);

	}

/** 8/16/32 bit atomic bitwise logical AND, full barrier semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv & v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ANDed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_and_ord)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __A_REG__ ", [ecx] ");

	asm("1: ");

	asm("mov " __D_REG__ ", [esp+8] ");

	asm("and " __D_REG__ ", " __A_REG__ );

	asm(__LOCK__ "cmpxchg [ecx], " __D_REG__ );

	asm("jne short 1b ");

	asm("ret ");

	}

/** 8/16/32 bit atomic bitwise logical inclusive OR, relaxed ordering.

	Atomically performs the following operation:

		oldv = *a; *a = oldv | v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_ior_rlx)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_ior_ord);

	}

/** 8/16/32 bit atomic bitwise logical inclusive OR, acquire semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv | v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_ior_acq)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_ior_ord);

	}

/** 8/16/32 bit atomic bitwise logical inclusive OR, release semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv | v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_ior_rel)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_ior_ord);

	}

/** 8/16/32 bit atomic bitwise logical inclusive OR, full barrier semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv | v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be ORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_ior_ord)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __A_REG__ ", [ecx] ");

	asm("1: ");

	asm("mov " __D_REG__ ", [esp+8] ");

	asm("or " __D_REG__ ", " __A_REG__ );

	asm(__LOCK__ "cmpxchg [ecx], " __D_REG__ );

	asm("jne short 1b ");

	asm("ret ");

	}

/** 8/16/32 bit atomic bitwise logical exclusive OR, relaxed ordering.

	Atomically performs the following operation:

		oldv = *a; *a = oldv ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be XORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_xor_rlx)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_xor_ord);

	}

/** 8/16/32 bit atomic bitwise logical exclusive OR, acquire semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be XORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_xor_acq)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_xor_ord);

	}

/** 8/16/32 bit atomic bitwise logical exclusive OR, release semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be XORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_xor_rel)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_xor_ord);

	}

/** 8/16/32 bit atomic bitwise logical exclusive OR, full barrier semantics.

	Atomically performs the following operation:

		oldv = *a; *a = oldv ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	v	The value to be XORed with *a

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_xor_ord)(volatile TAny* /*a*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __A_REG__ ", [ecx] ");

	asm("1: ");

	asm("mov " __D_REG__ ", [esp+8] ");

	asm("xor " __D_REG__ ", " __A_REG__ );

	asm(__LOCK__ "cmpxchg [ecx], " __D_REG__ );

	asm("jne short 1b ");

	asm("ret ");

	}

/** 8/16/32 bit atomic bitwise universal function, relaxed ordering.

	Atomically performs the following operation:

		oldv = *a; *a = (oldv & u) ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	u	The value to be ANDed with *a

	@param	v	The value to be XORed with (*a&u)

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_axo_rlx)(volatile TAny* /*a*/, __TUintX__ /*u*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_axo_ord);

	}

/** 8/16/32 bit atomic bitwise universal function, acquire semantics.

	Atomically performs the following operation:

		oldv = *a; *a = (oldv & u) ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	u	The value to be ANDed with *a

	@param	v	The value to be XORed with (*a&u)

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_axo_acq)(volatile TAny* /*a*/, __TUintX__ /*u*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_axo_ord);

	}

/** 8/16/32 bit atomic bitwise universal function, release semantics.

	Atomically performs the following operation:

		oldv = *a; *a = (oldv & u) ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	u	The value to be ANDed with *a

	@param	v	The value to be XORed with (*a&u)

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_axo_rel)(volatile TAny* /*a*/, __TUintX__ /*u*/, __TUintX__ /*v*/)

	{

	__redir__(__e32_atomic_axo_ord);

	}

/** 8/16/32 bit atomic bitwise universal function, full barrier semantics.

	Atomically performs the following operation:

		oldv = *a; *a = (oldv & u) ^ v; return oldv;

	@param	a	Address of data to be updated - must be naturally aligned

	@param	u	The value to be ANDed with *a

	@param	v	The value to be XORed with (*a&u)

	@return		The original value of *a

*/

EXPORT_C __NAKED__ __TUintX__	__fname__(__e32_atomic_axo_ord)(volatile TAny* /*a*/, __TUintX__ /*u*/, __TUintX__ /*v*/)

	{

	asm("mov ecx, [esp+4] ");

	asm("mov " __A_REG__ ", [ecx] ");

	asm("1: ");

	asm("mov " __D_REG__ ", [esp+8] ");

	asm("and " __D_REG__ ", " __A_REG__ );

	asm("xor " __D_REG__ ", [esp+12] ");

	asm(__LOCK__ "cmpxchg [ecx], " __D_REG__ );