OpenBLAS/kernel/power/zscal_ppc440.S

/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
/* All rights reserved.                                              */
/*                                                                   */
/* Redistribution and use in source and binary forms, with or        */
/* without modification, are permitted provided that the following   */
/* conditions are met:                                               */
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/*   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  UNIVERSITY OF  TEXAS AT    */
/*    AUSTIN  ``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    */
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/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */
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/* documentation are those of the authors and should not be          */
/* interpreted as representing official policies, either expressed   */
/* or implied, of The University of Texas at Austin.                 */
/*********************************************************************/

#define ASSEMBLER
#include "common.h"

#define N	r3
#define XX	r4
#define PRE	r5

#if defined(linux) || defined(__FreeBSD__)
#ifndef __64BIT__
#define X r6
#define INCX r7
#else
#define X r8
#define INCX r9
#endif
#endif

#if defined(_AIX) || defined(__APPLE__)
#if !defined(__64BIT__) && defined(DOUBLE)
#define X r10
#define INCX r8
#else
#define X r8
#define INCX r9
#endif
#endif

#define INC1	r11
#define FLAG	r12

#define FZERO	f0
#define ALPHA_R	f1
#define ALPHA_I	f2

	PROLOGUE
	PROFCODE

	addi	SP, SP, -8
	li	r0,   0

	stw	r0,      0(SP)
	lfs	FZERO,   0(SP)
	addi	SP, SP,  8

#if (defined(_AIX) || defined(__APPLE__)) && !defined(__64BIT__) && defined(DOUBLE)
	lwz	INCX,    56(SP)
#endif

	slwi	INCX, INCX, ZBASE_SHIFT
	li	INC1, SIZE
	sub	X, X, INCX
	li	PRE, 3 * 16 * SIZE

	cmpwi	cr0, N, 0
	blelr-	cr0

	fcmpu	cr0, FZERO, ALPHA_R
	bne-	cr0, LL(A1I1)

	fcmpu	cr0, FZERO, ALPHA_I
	bne-	cr0, LL(A1I1)

	lwz	FLAG, FRAMESLOT(0)(SP)
	cmpwi	cr0, FLAG, 1
	beq-	cr0, LL(A1I1)

LL(A0IN):
	srawi.	r0, N, 3
	mtspr	CTR,  r0
	beq-	LL(A0IN_Remain)
	.align 4

LL(A0IN_Kernel):
#ifdef PPCG4
	dcbtst	X, PRE
#endif
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
#if defined(PPCG4) && defined(DOUBLE)
	dcbtst	X, PRE
#endif
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
#ifdef PPCG4
	dcbtst	X, PRE
#endif
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
#if defined(PPCG4) && defined(DOUBLE)
	dcbtst	X, PRE
#endif
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
	bdnz	LL(A0IN_Kernel)
	.align 4

LL(A0IN_Remain):
	andi.	r0,  N, 7
	mtspr	CTR, r0
	beqlr+
	.align 4

LL(A0IN_RemainKernel):
	STFDUX	FZERO, X, INCX
	STFDX	FZERO, X, INC1
	bdnz	LL(A0IN_RemainKernel)
	blr
	.align 4

LL(A1I1):
	mr	XX, X

	srawi.	r0, N, 2
	mtspr	CTR,  r0
	beq-	LL(15)

	LFDUX	f0, X, INCX
	LFDX	f3, X, INC1
	LFDUX	f4, X, INCX
	LFDX	f5, X, INC1

	LFDUX	f6, X, INCX
	FMUL	f10, ALPHA_R, f0
	LFDX	f7, X, INC1
	FMUL	f11, ALPHA_R, f3
	LFDUX	f8, X, INCX
	FMUL	f12, ALPHA_R, f4
	FMUL	f13, ALPHA_R, f5
	bdz	LL(13)
	.align 4

LL(12):
#ifdef PPCG4
	dcbtst	X, PRE
#endif

	FNMSUB	f10, ALPHA_I, f3, f10
	LFDX	f9, X, INC1
	FMADD	f11, ALPHA_I, f0, f11
	LFDUX	f0, X, INCX
	FNMSUB	f12, ALPHA_I, f5, f12
	LFDX	f3, X, INC1
	FMADD	f13, ALPHA_I, f4, f13
	LFDUX	f4, X, INCX

#if defined(PPCG4) && defined(DOUBLE)
	dcbtst	X, PRE
#endif

	STFDUX	f10, XX, INCX
	FMUL	f10, ALPHA_R, f6
	STFDX	f11, XX, INC1
	FMUL	f11, ALPHA_R, f7
	STFDUX	f12, XX, INCX
	FMUL	f12, ALPHA_R, f8
	STFDX	f13, XX, INC1
	FMUL	f13, ALPHA_R, f9

#ifdef PPCG4
	dcbtst	X, PRE
#endif

	FNMSUB	f10, ALPHA_I, f7, f10
	LFDX	f5, X, INC1
	FMADD	f11, ALPHA_I, f6, f11
	LFDUX	f6, X, INCX
	FNMSUB	f12, ALPHA_I, f9, f12
	LFDX	f7, X, INC1
	FMADD	f13, ALPHA_I, f8, f13
	LFDUX	f8, X, INCX

#if defined(PPCG4) && defined(DOUBLE)
	dcbtst	X, PRE
#endif

	STFDUX	f10, XX, INCX
	FMUL	f10, ALPHA_R, f0
	STFDX	f11, XX, INC1
	FMUL	f11, ALPHA_R, f3
	STFDUX	f12, XX, INCX
	FMUL	f12, ALPHA_R, f4
	STFDX	f13, XX, INC1
	FMUL	f13, ALPHA_R, f5
	bdnz	LL(12)
	.align 4

LL(13):
	FNMSUB	f10, ALPHA_I, f3, f10
	LFDX	f9, X, INC1
	FMADD	f11, ALPHA_I, f0, f11
	FNMSUB	f12, ALPHA_I, f5, f12
	FMADD	f13, ALPHA_I, f4, f13

	STFDUX	f10, XX, INCX
	FMUL	f10, ALPHA_R, f6
	STFDX	f11, XX, INC1
	FMUL	f11, ALPHA_R, f7
	STFDUX	f12, XX, INCX
	FMUL	f12, ALPHA_R, f8
	STFDX	f13, XX, INC1
	FMUL	f13, ALPHA_R, f9

	FNMSUB	f10, ALPHA_I, f7, f10
	FMADD	f11, ALPHA_I, f6, f11
	FNMSUB	f12, ALPHA_I, f9, f12
	FMADD	f13, ALPHA_I, f8, f13

	STFDUX	f10, XX, INCX
	STFDX	f11, XX, INC1
	STFDUX	f12, XX, INCX
	STFDX	f13, XX, INC1
	.align 4

LL(15):
	andi.	r0,  N, 3
	mtspr	CTR, r0
	beqlr+
	.align 4

LL(A1IN_RemainKernel):
	LFDUX	f3, X, INCX
	LFDX	f4, X, INC1

	FMUL	f5, ALPHA_R, f3
	FMUL	f6, ALPHA_R, f4

	FNMSUB	f5, ALPHA_I, f4, f5
	FMADD	f6, ALPHA_I, f3, f6

	STFDUX	f5, XX, INCX
	STFDX	f6, XX, INC1
	bdnz	LL(A1IN_RemainKernel)
	blr

	EPILOGUE