OpenBLAS/kernel/arm/axpy_vfp.S

/***************************************************************************
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/**************************************************************************************
* 2013/11/14 Saar
* 	 BLASTEST 		: xOK
* 	 CTEST			: xOK
* 	 TEST			: xOK
*
**************************************************************************************/

#define ASSEMBLER
#include "common.h"

#define STACKSIZE 256

#define	OLD_INC_X	[fp, #0 ]
#define	OLD_Y		[fp, #4 ]
#define	OLD_INC_Y	[fp, #8 ]


#define	N	r0
#define Y	r1
#define	INC_X	r2
#define	X	r3
#define INC_Y	r4

#define I	r12

#define X_PRE	512

/**************************************************************************************
* Macro definitions
**************************************************************************************/

/*****************************************************************************************/

#if !defined(CONJ)

#if defined(DOUBLE)

#define	FMAC_R1	fmacd
#define FMAC_R2 fnmacd
#define	FMAC_I1	fmacd
#define FMAC_I2 fmacd

#else

#define	FMAC_R1	fmacs
#define FMAC_R2 fnmacs
#define	FMAC_I1	fmacs
#define FMAC_I2 fmacs

#endif

#else	// CONJ

#if defined(DOUBLE)

#define	FMAC_R1	fmacd
#define FMAC_R2 fmacd
#define	FMAC_I1	fnmacd
#define FMAC_I2 fmacd

#else

#define	FMAC_R1	fmacs
#define FMAC_R2 fmacs
#define	FMAC_I1	fnmacs
#define FMAC_I2 fmacs

#endif

#endif


#if	!defined(COMPLEX)

#if	defined(DOUBLE)

.macro KERNEL_F4

	pld	[ X, #X_PRE ]
	fldmiad		X!,  { d4 - d7  }
	pld	[ Y, #X_PRE ]
	fldmiad		Y ,  { d8 - d11 }
	fmacd   	d8 , d0, d4
	fstmiad		Y!, { d8 }
	fmacd   	d9 , d0, d5
	fstmiad		Y!, { d9 }
	fmacd   	d10, d0, d6
	fstmiad		Y!, { d10 }
	fmacd   	d11, d0, d7
	fstmiad		Y!, { d11 }


.endm


.macro KERNEL_F1

	fldmiad		X!,  { d4 }
	fldmiad		Y ,  { d8 }
	fmacd   	d8 , d0, d4
	fstmiad		Y!, { d8 }

.endm

.macro KERNEL_S1

	fldmiad		X ,  { d4 }
	fldmiad		Y ,  { d8 }
	fmacd   	d8 , d0, d4
	fstmiad		Y , { d8 }
	add	X, X, INC_X
	add	Y, Y, INC_Y

.endm

#else

.macro KERNEL_F4

	fldmias		X!,  { s4 - s7  }
	fldmias		Y ,  { s8 - s11 }
	fmacs   	s8 , s0, s4
	fstmias		Y!, { s8 }
	fmacs   	s9 , s0, s5
	fstmias		Y!, { s9 }
	fmacs   	s10, s0, s6
	fstmias		Y!, { s10 }
	fmacs   	s11, s0, s7
	fstmias		Y!, { s11 }


.endm


.macro KERNEL_F1

	fldmias		X!,  { s4 }
	fldmias		Y ,  { s8 }
	fmacs   	s8 , s0, s4
	fstmias		Y!, { s8 }

.endm

.macro KERNEL_S1

	fldmias		X ,  { s4 }
	fldmias		Y ,  { s8 }
	fmacs   	s8 , s0, s4
	fstmias		Y , { s8 }
	add	X, X, INC_X
	add	Y, Y, INC_Y

.endm


#endif

#else

#if	defined(DOUBLE)

.macro KERNEL_F4

	pld	[ X, #X_PRE ]
	fldmiad		X!,  { d4 - d7  }
	pld	[ Y, #X_PRE ]
	fldmiad		Y ,  { d8 - d11 }

	FMAC_R1		d8 , d0, d4
	FMAC_R2		d8 , d1, d5
	FMAC_I1		d9 , d0, d5
	FMAC_I2		d9 , d1, d4
	fstmiad		Y!, { d8 }
	fstmiad		Y!, { d9 }

	FMAC_R1		d10, d0, d6
	FMAC_R2		d10, d1, d7
	FMAC_I1		d11, d0, d7
	FMAC_I2		d11, d1, d6
	fstmiad		Y!, { d10 }
	fstmiad		Y!, { d11 }

	pld	[ X, #X_PRE ]
	fldmiad		X!,  { d4 - d7  }
	pld	[ Y, #X_PRE ]
	fldmiad		Y ,  { d8 - d11 }

	FMAC_R1		d8 , d0, d4
	FMAC_R2		d8 , d1, d5
	FMAC_I1		d9 , d0, d5
	FMAC_I2		d9 , d1, d4
	fstmiad		Y!, { d8 }
	fstmiad		Y!, { d9 }

	FMAC_R1		d10, d0, d6
	FMAC_R2		d10, d1, d7
	FMAC_I1		d11, d0, d7
	FMAC_I2		d11, d1, d6
	fstmiad		Y!, { d10 }
	fstmiad		Y!, { d11 }





.endm


.macro KERNEL_F1

	fldmiad		X!,  { d4 - d5  }
	fldmiad		Y ,  { d8 - d9 }

	FMAC_R1		d8 , d0, d4
	FMAC_R2		d8 , d1, d5
	FMAC_I1		d9 , d0, d5
	FMAC_I2		d9 , d1, d4
	fstmiad		Y!, { d8 }
	fstmiad		Y!, { d9 }



.endm

.macro KERNEL_S1

	fldmiad		X ,  { d4 - d5 }
	fldmiad		Y ,  { d8 - d9 }

	FMAC_R1		d8 , d0, d4
	FMAC_R2		d8 , d1, d5
	FMAC_I1		d9 , d0, d5
	FMAC_I2		d9 , d1, d4
	fstmiad		Y  , { d8 - d9 }

	add	X, X, INC_X
	add	Y, Y, INC_Y

.endm



#else

.macro KERNEL_F4

	pld	[ X, #X_PRE ]
	fldmias		X!,  { s4 - s7  }
	pld	[ Y, #X_PRE ]
	fldmias		Y ,  { s8 - s11 }

	FMAC_R1		s8 , s0, s4
	FMAC_R2		s8 , s1, s5
	FMAC_I1		s9 , s0, s5
	FMAC_I2		s9 , s1, s4
	fstmias		Y!, { s8 }
	fstmias		Y!, { s9 }

	FMAC_R1		s10, s0, s6
	FMAC_R2		s10, s1, s7
	FMAC_I1		s11, s0, s7
	FMAC_I2		s11, s1, s6
	fstmias		Y!, { s10 }
	fstmias		Y!, { s11 }

	fldmias		X!,  { s4 - s7  }
	fldmias		Y ,  { s8 - s11 }

	FMAC_R1		s8 , s0, s4
	FMAC_R2		s8 , s1, s5
	FMAC_I1		s9 , s0, s5
	FMAC_I2		s9 , s1, s4
	fstmias		Y!, { s8 }
	fstmias		Y!, { s9 }

	FMAC_R1		s10, s0, s6
	FMAC_R2		s10, s1, s7
	FMAC_I1		s11, s0, s7
	FMAC_I2		s11, s1, s6
	fstmias		Y!, { s10 }
	fstmias		Y!, { s11 }





.endm


.macro KERNEL_F1

	fldmias		X!,  { s4 - s5  }
	fldmias		Y ,  { s8 - s9 }

	FMAC_R1		s8 , s0, s4
	FMAC_R2		s8 , s1, s5
	FMAC_I1		s9 , s0, s5
	FMAC_I2		s9 , s1, s4
	fstmias		Y!, { s8 }
	fstmias		Y!, { s9 }



.endm

.macro KERNEL_S1

	fldmias		X ,  { s4 - s5 }
	fldmias		Y ,  { s8 - s9 }

	FMAC_R1		s8 , s0, s4
	FMAC_R2		s8 , s1, s5
	FMAC_I1		s9 , s0, s5
	FMAC_I2		s9 , s1, s4
	fstmias		Y  , { s8 - s9 }

	add	X, X, INC_X
	add	Y, Y, INC_Y

.endm


#endif

#endif

/**************************************************************************************
* End of macro definitions
**************************************************************************************/

	PROLOGUE

	.align 5
	push    {r4 , fp}
        add     fp, sp, #8
	sub     sp, sp, #STACKSIZE                              // reserve stack

	ldr    INC_X , OLD_INC_X
	ldr         Y, OLD_Y
	ldr    INC_Y , OLD_INC_Y

	sub     r12, fp, #128

#if	defined(DOUBLE)
        vstm    r12, { d8 - d15}                                 // store floating point registers
#else
        vstm    r12, { s8 - s15}                                 // store floating point registers
#endif

	cmp	N, #0
	ble	axpy_kernel_L999

	cmp	INC_X, #0
	beq	axpy_kernel_L999

	cmp	INC_Y, #0
	beq	axpy_kernel_L999

	cmp	INC_X, #1
	bne	axpy_kernel_S_BEGIN

	cmp	INC_Y, #1
	bne	axpy_kernel_S_BEGIN


axpy_kernel_F_BEGIN:


	asrs	I, N, #2					// I = N / 4
	ble	axpy_kernel_F1

	.align 5

axpy_kernel_F4:

#if !defined(COMPLEX) && !defined(DOUBLE)
	pld	[ X, #X_PRE ]
	pld	[ Y, #X_PRE ]
#endif

	KERNEL_F4

	subs	I, I, #1
	ble	axpy_kernel_F1

	KERNEL_F4

	subs	I, I, #1
	bne	axpy_kernel_F4

axpy_kernel_F1:

	ands	I, N, #3
	ble	axpy_kernel_L999

axpy_kernel_F10:

	KERNEL_F1

	subs    I, I, #1
        bne     axpy_kernel_F10

	b	axpy_kernel_L999

axpy_kernel_S_BEGIN:

#if defined(COMPLEX)

#if defined(DOUBLE)
	lsl	INC_X, INC_X, #4				// INC_X * SIZE * 2
	lsl	INC_Y, INC_Y, #4				// INC_Y * SIZE * 2
#else
	lsl	INC_X, INC_X, #3				// INC_X * SIZE * 2
	lsl	INC_Y, INC_Y, #3				// INC_Y * SIZE * 2
#endif

#else

#if defined(DOUBLE)
	lsl	INC_X, INC_X, #3				// INC_X * SIZE
	lsl	INC_Y, INC_Y, #3				// INC_Y * SIZE
#else
	lsl	INC_X, INC_X, #2				// INC_X * SIZE
	lsl	INC_Y, INC_Y, #2				// INC_Y * SIZE
#endif

#endif


	asrs	I, N, #2					// I = N / 4
	ble	axpy_kernel_S1

	.align 5

axpy_kernel_S4:

	KERNEL_S1
	KERNEL_S1
	KERNEL_S1
	KERNEL_S1

	subs	I, I, #1
	bne	axpy_kernel_S4

axpy_kernel_S1:

	ands	I, N, #3
	ble	axpy_kernel_L999

axpy_kernel_S10:

	KERNEL_S1

	subs    I, I, #1
        bne     axpy_kernel_S10


axpy_kernel_L999:

	sub     r3, fp, #128

#if	defined(DOUBLE)
        vldm    r3, { d8 - d15 }                                 // restore floating point registers
#else
        vldm    r3, { s8 - s15 }                                 // restore floating point registers
#endif

	mov	r0, #0		// set return value

	sub     sp, fp, #8
	pop     {r4,fp}
	bx	lr

	EPILOGUE