/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

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

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <liboil/liboilfunction.h>

#include "liboil/simdpack/simdpack.h"

#define ABS(x) ((x)>0 ? (x) : -(x))

#if 0

static void

abs_u16_s16_i386asm (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

{

  __asm__ __volatile__ ("\n"

      "	.p2align 4,,15			\n"

      "1:  movswl	(%0), %%eax		\n"

      "    addl	$2, %0			\n"

      "    movl	%%eax, %%edx		\n"

      "    negl	%%edx			\n"

      "    cmpl	$-1, %%eax		\n"

      "    cmovle	%%edx, %%eax		\n"

      "    movw	%%ax, (%1)		\n"

      "    addl	$2, %1			\n"

      "    decl	%2			\n"

      "    testl	%2, %2			\n"

      "    jg	1b			\n":"+r" (src), "+r" (dest), "+r" (n)

      ::"eax", "edx");

}

OIL_DEFINE_IMPL_FULL (abs_u16_s16_i386asm, abs_u16_s16, OIL_IMPL_FLAG_CMOV);

#endif

#if 0

/* The previous function after running through uberopt */

static void

abs_u16_s16_i386asm_uber4 (uint16_t * dest, int dstr, int16_t * src,

    int sstr, int n)

{

  __asm__ __volatile__ ("\n"

      "	.p2align 4,,15			\n"

      "1:                               \n"

      "    movswl	(%0), %%eax	\n" /* UBER 0:     */

      "    addl	$2, %0			\n" /* UBER 1: 0   */

      "    movl	%%eax, %%edx		\n" /* UBER 2: 0   */

      "    decl	%2			\n" /* UBER 7:     */

      "    negl	%%edx			\n" /* UBER 3: 2   */

      "    cmpl	$-1, %%eax ; cmovle %%edx, %%eax \n" /* UBER 4: 3 */

      "    movw	%%ax, (%1)		\n" /* UBER 5: 4   */

      "    addl	$2, %1			\n" /* UBER 6: 5   */

      "    testl	%2, %2		\n"

      "    jg	1b			\n"

      :"+r" (src), "+r" (dest), "+r" (n)

      ::"eax", "edx");

}

OIL_DEFINE_IMPL_FULL (abs_u16_s16_i386asm_uber4, abs_u16_s16, OIL_IMPL_FLAG_CMOV);

#endif

#if 0

static void

abs_u16_s16_i386asm2 (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

{

  __asm__ __volatile__ ("\n"

      "	pushl	%%ebp			\n"

      "	movl	%%eax, %%ebp		\n"

      "	.p2align 4,,15			\n"

      "1:	movswl	(%%edi), %%eax		\n"

      "	addl	$2, %%edi		\n"

      "	movl	%%eax, %%edx		\n"

      "	negl	%%edx			\n"

      "	cmpl	$-1, %%eax		\n"

      "	cmovle	%%edx, %%eax		\n"

      "	movw	%%ax, (%%ebp)		\n"

      "	addl	$2, %%ebp		\n"

      "	decl	%2			\n"

      "	testl	%2, %2			\n"

      "	jg	1b			\n"

      "	popl	%%ebp			\n":"+D" (src), "+a" (dest), "+S" (n)

      ::"ecx", "edx");

}

OIL_DEFINE_IMPL_FULL (abs_u16_s16_i386asm2, abs_u16_s16, OIL_IMPL_FLAG_CMOV);

#endif

static void

abs_u16_s16_i386asm3 (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

{

#if !defined(__WINSCW__) && !defined(__WINS__)      

  __asm__ __volatile__ ("\n"

      "	.p2align 4,,15			\n"

      "1:  movswl (%1), %%eax           \n"

      "    add %3, %1                   \n"

      "    mov %%eax, %%edx             \n"

      "    sar $0xf, %%ax               \n"

      "    and %%edx, %%eax             \n"

      "    add %%eax, %%eax             \n"

      "    sub %%eax, %%edx             \n"

      "    mov %%dx, (%0)               \n"

      "    add %4, %0                   \n"

      "    decl %2                      \n"

      "    jne 1b                       \n"

      : "+r" (dest), "+r" (src), "+m" (n)

      : "m" (dstr), "m" (sstr)

      : "eax", "edx");

#endif

}

OIL_DEFINE_IMPL_ASM (abs_u16_s16_i386asm3, abs_u16_s16);

static void

abs_u16_s16_mmx (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

{

#if !defined(__WINSCW__) && !defined(__WINS__)      

  static const int16_t p[][4] = {

    { -32768, -32768, -32768, -32768 },

    { 32767, 32767, 32767, 32767 }

  };

  int16_t tmp[4];

  while (n & 3) {

    *dest = ABS (*src);

    OIL_INCREMENT (dest, dstr);

    OIL_INCREMENT (src, sstr);

    n--;

  }

  n /= 4;

  __asm__ __volatile__ ("\n"

      "	movq	(%0), %%mm2		\n"

      "	movq	8(%0), %%mm3		\n"

      :: "r" (p));

  while (n--) {

    tmp[0] = *src;

    OIL_INCREMENT (src, sstr);

    tmp[1] = *src;

    OIL_INCREMENT (src, sstr);

    tmp[2] = *src;

    OIL_INCREMENT (src, sstr);

    tmp[3] = *src;

    OIL_INCREMENT (src, sstr);

    __asm__ __volatile__ ("\n"

        "	movq	(%0), %%mm1		\n"

        "	movq	%%mm1, %%mm0		\n"

        "	paddsw	%%mm2, %%mm0		\n"

        "	paddsw	%%mm3, %%mm1		\n"

        "	psubsw	%%mm2, %%mm0		\n"

        "	psubsw	%%mm3, %%mm1		\n"

        "	psubw	%%mm1, %%mm0		\n"

        "	movq	%%mm0, (%0)		\n"

        : : "r" (tmp)

        : "memory" );

    *dest = tmp[0];

    OIL_INCREMENT (dest, dstr);

    *dest = tmp[1];

    OIL_INCREMENT (dest, dstr);

    *dest = tmp[2];

    OIL_INCREMENT (dest, dstr);

    *dest = tmp[3];

    OIL_INCREMENT (dest, dstr);

  }

  asm volatile ("emms");

#endif  

}

OIL_DEFINE_IMPL_FULL (abs_u16_s16_mmx, abs_u16_s16, OIL_IMPL_FLAG_MMX);

#if 0

static void

abs_u16_s16_mmxx (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

{

  short p[] = { -32768, -32768, -32768, -32768,

    32767, 32767, 32767, 32767

  };

  while (n & 7) {

    *dest = ABS (*src);

    OIL_INCREMENT (dest, dstr);

    OIL_INCREMENT (src, sstr);

    n--;

  }

  n /= 8;

  __asm__ __volatile__ ("\n"

      "	movq	(%3), %%mm2		\n"

      "	movq	8(%3), %%mm3		\n"

      "	.p2align 4,,15			\n"

      "1:	movq	(%%edi), %%mm0		\n"

      "	movq	(%%edi), %%mm1		\n"

      "	paddsw	%%mm2, %%mm0		\n"

      "	paddsw	%%mm3, %%mm1		\n"

      "	psubsw	%%mm2, %%mm0		\n"

      "	psubsw	%%mm3, %%mm1		\n"

      "	psubw	%%mm1, %%mm0		\n"

      "	movq	%%mm0, (%%eax)		\n"

      "	 movq	8(%%edi), %%mm4		\n"

      "	 movq	8(%%edi), %%mm5		\n"

      "	 addl	$16, %%edi		\n"

      "	 paddsw	%%mm2, %%mm4		\n"

      "	 paddsw	%%mm3, %%mm5		\n"

      "	 psubsw	%%mm2, %%mm4		\n"

      "	 psubsw	%%mm3, %%mm5		\n"

      "	 psubw	%%mm5, %%mm4		\n"

      "	 movq	%%mm4, 8(%%eax)		\n"

      "	 addl	$16, %%eax		\n"

      "	decl	%2			\n"

      "	testl	%2, %2			\n"

      "	jg	1b			\n":"+D" (src), "+a" (dest), "+S" (n)

      :"c" (p));

  asm volatile ("emms");

}

OIL_DEFINE_IMPL_FULL (abs_u16_s16_mmxx, abs_u16_s16, OIL_IMPL_FLAG_MMX);

#endif

#ifdef ENABLE_BROKEN_IMPLS

static void

abs_u16_s16_mmx2 (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

{

  while (n & 7) {

    *dest = ABS (*src);

    OIL_INCREMENT (dest, dstr);

    OIL_INCREMENT (src, sstr);

    n--;

  }

  n /= 8;

  __asm__ __volatile__ ("\n"

      "	pushl	%%ebp			\n"

      "	movl	%%eax, %%ebp		\n"

      "	.p2align 4,,15			\n"

      "1:	movq	(%%edi), %%mm0		\n"

      "	pxor	%%mm1, %%mm1		\n"

      "	 movq	8(%%edi), %%mm2		\n"

      "	 addl	$16, %%edi		\n"

      "	psubw	%%mm0, %%mm1		\n"

      "	 pxor	%%mm3, %%mm3		\n"

      "	pmaxsw	%%mm0, %%mm1		\n"

      "	 psubw	%%mm2, %%mm3		\n"

      "	movq	%%mm1, (%%ebp)		\n"

      "	 pmaxsw	%%mm2, %%mm3		\n"

      "	 movq	%%mm3, 8(%%ebp)		\n"

      "	 addl	$16, %%ebp		\n"

      "	decl	%2			\n"

      "	testl	%2, %2			\n"

      "	jg	1b			\n"

      "	popl	%%ebp			\n":"+D" (src), "+a" (dest), "+S" (n)

      ::"ecx", "edx");

  asm volatile ("emms");

}

OIL_DEFINE_IMPL_FULL (abs_u16_s16_mmx2, abs_u16_s16, OIL_IMPL_FLAG_MMXEXT);

#endif

#ifdef ENABLE_BROKEN_IMPLS

static void

abs_u16_s16_sse2 (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

{

  while (n & 7) {

    *dest = ABS (*src);

    OIL_INCREMENT (dest, dstr);

    OIL_INCREMENT (src, sstr);

    n--;

  }

  n /= 8;

  __asm__ __volatile__ ("\n"

      "	pushl	%%ebp			\n"

      "	movl	%%eax, %%ebp		\n"

      "	.p2align 4,,15			\n"

      "1:	movq	(%%edi), %%xmm0		\n"

      "	addl	$16, %%edi		\n"

      "	pxor	%%xmm1, %%xmm1		\n"

      "	psubw	%%xmm0, %%xmm1		\n"

      "	pmaxsw	%%xmm0, %%xmm1		\n"

      "	movq	%%xmm1, (%%ebp)		\n"

      "	addl	$16, %%ebp		\n"

      "	decl	%2			\n"

      "	testl	%2, %2			\n"

      "	jg	1b			\n"

      "	popl	%%ebp			\n":"+D" (src), "+a" (dest), "+S" (n)

      ::"ecx", "edx");

}

OIL_DEFINE_IMPL_FULL (abs_u16_s16_sse2, abs_u16_s16, OIL_IMPL_FLAG_SSE2);

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_i386asm, abs_u16_s16() {

		return &_oil_function_impl_abs_u16_s16_i386asm, abs_u16_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_i386asm_uber4, abs_u16_s16() {

		return &_oil_function_impl_abs_u16_s16_i386asm_uber4, abs_u16_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_i386asm2, abs_u16_s16() {

		return &_oil_function_impl_abs_u16_s16_i386asm2, abs_u16_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_mmx, abs_u16_s16() {

		return &_oil_function_impl_abs_u16_s16_mmx, abs_u16_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_mmxx, abs_u16_s16() {

		return &_oil_function_impl_abs_u16_s16_mmxx, abs_u16_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_mmx2, abs_u16_s16() {

		return &_oil_function_impl_abs_u16_s16_mmx2, abs_u16_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_sse2, abs_u16_s16() {

		return &_oil_function_impl_abs_u16_s16_sse2, abs_u16_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_abs_u16_s16_i386asm3() {

		return &_oil_function_impl_abs_u16_s16_i386asm3;

}

#endif