pcsx2/common/include/x86emitter/implement/simd_comparisons.h

/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2009  PCSX2 Dev Team
 * 
 *  PCSX2 is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU Lesser General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 *  PURPOSE.  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with PCSX2.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

namespace x86Emitter {

struct xImplSimd_MinMax
{
	const xImplSimd_DestRegSSE PS;		// packed single precision
	const xImplSimd_DestRegSSE PD;		// packed double precision
	const xImplSimd_DestRegSSE SS;		// scalar single precision
	const xImplSimd_DestRegSSE SD;		// scalar double precision
};

//////////////////////////////////////////////////////////////////////////////////////////
// 
struct xImplSimd_Compare
{
	SSE2_ComparisonType		CType;

	void PS( const xRegisterSSE& to, const xRegisterSSE& from ) const;
	void PS( const xRegisterSSE& to, const ModSibBase& from ) const;

	void PD( const xRegisterSSE& to, const xRegisterSSE& from ) const;
	void PD( const xRegisterSSE& to, const ModSibBase& from ) const;

	void SS( const xRegisterSSE& to, const xRegisterSSE& from ) const;
	void SS( const xRegisterSSE& to, const ModSibBase& from ) const;

	void SD( const xRegisterSSE& to, const xRegisterSSE& from ) const;
	void SD( const xRegisterSSE& to, const ModSibBase& from ) const;
};

//////////////////////////////////////////////////////////////////////////////////////////
// Compare scalar floating point values and set EFLAGS (Ordered or Unordered)
//
struct xImplSimd_COMI
{
	const xImplSimd_DestRegSSE SS;
	const xImplSimd_DestRegSSE SD;
};


//////////////////////////////////////////////////////////////////////////////////////////
//
struct xImplSimd_PCompare
{
public:
	// Compare packed bytes for equality.
	// If a data element in dest is equal to the corresponding date element src, the
	// corresponding data element in dest is set to all 1s; otherwise, it is set to all 0s.
	const xImplSimd_DestRegEither EQB;

	// Compare packed words for equality.
	// If a data element in dest is equal to the corresponding date element src, the
	// corresponding data element in dest is set to all 1s; otherwise, it is set to all 0s.
	const xImplSimd_DestRegEither EQW;

	// Compare packed doublewords [32-bits] for equality.
	// If a data element in dest is equal to the corresponding date element src, the
	// corresponding data element in dest is set to all 1s; otherwise, it is set to all 0s.
	const xImplSimd_DestRegEither EQD;

	// Compare packed signed bytes for greater than.
	// If a data element in dest is greater than the corresponding date element src, the
	// corresponding data element in dest is set to all 1s; otherwise, it is set to all 0s.
	const xImplSimd_DestRegEither GTB;

	// Compare packed signed words for greater than.
	// If a data element in dest is greater than the corresponding date element src, the
	// corresponding data element in dest is set to all 1s; otherwise, it is set to all 0s.
	const xImplSimd_DestRegEither GTW;

	// Compare packed signed doublewords [32-bits] for greater than.
	// If a data element in dest is greater than the corresponding date element src, the
	// corresponding data element in dest is set to all 1s; otherwise, it is set to all 0s.
	const xImplSimd_DestRegEither GTD;
};

//////////////////////////////////////////////////////////////////////////////////////////
// 
struct xImplSimd_PMinMax
{
	// Compare packed unsigned byte integers in dest to src and store packed min/max
	// values in dest.
	// Operation can be performed on either MMX or SSE operands.
	const xImplSimd_DestRegEither UB;

	// Compare packed signed word integers in dest to src and store packed min/max
	// values in dest.
	// Operation can be performed on either MMX or SSE operands.
	const xImplSimd_DestRegEither SW;

	// [SSE-4.1] Compare packed signed byte integers in dest to src and store 
	// packed min/max values in dest. (SSE operands only)
	const xImplSimd_DestRegSSE SB;

	// [SSE-4.1] Compare packed signed doubleword integers in dest to src and store 
	// packed min/max values in dest. (SSE operands only)
	const xImplSimd_DestRegSSE SD;

	// [SSE-4.1] Compare packed unsigned word integers in dest to src and store 
	// packed min/max values in dest. (SSE operands only)
	const xImplSimd_DestRegSSE UW;

	// [SSE-4.1] Compare packed unsigned doubleword integers in dest to src and store 
	// packed min/max values in dest. (SSE operands only)
	const xImplSimd_DestRegSSE UD;
};

}	// end namespace x86Emitter