/*
	dct64_x86_64: SSE optimized dct64 for x86-64

	copyright 1995-2026 by the mpg123 project - free software under the terms of the LGPL 2.1
	see COPYING and AUTHORS files in distribution or http://mpg123.org
	initially written by Taihei Monma
*/

#include "x86_64_defs.h"
#include "mangle.h"

#ifdef IS_MSABI
/* short *out0 */
#define ARG0 %r9
/* short *out1 */
#define ARG1 %rdx
/* real *samples */
#define ARG2 %r8
#else
/* short *out0 */
#define ARG0 %rdi
/* short *out1 */
#define ARG1 %rsi
/* real *samples */
#define ARG2 %rdx
#endif

/*
	void dct64_x86_64(short *out0, short *out1, real *samples);
*/

	RODATA
	ALIGN32
ASM_NAME(INT123_costab_x86_64):
	.long 1056974725
	.long 1057056395
	.long 1057223771
	.long 1057485416
	.long 1057855544
	.long 1058356026
	.long 1059019886
	.long 1059897405
	.long 1061067246
	.long 1062657950
	.long 1064892987
	.long 1066774581
	.long 1069414683
	.long 1073984175
	.long 1079645762
	.long 1092815430
	.long 1057005197
	.long 1057342072
	.long 1058087743
	.long 1059427869
	.long 1061799040
	.long 1065862217
	.long 1071413542
	.long 1084439708
	.long 1057128951
	.long 1058664893
	.long 1063675095
	.long 1076102863
	.long 1057655764
	.long 1067924853
	.long 1060439283
	.long 0
	.text
	ALIGN16
.globl ASM_NAME(INT123_dct64_x86_64)
ASM_NAME(INT123_dct64_x86_64):
#ifdef IS_MSABI /* should save xmm6-15 */
	movq		%rcx, ARG0
	subq		$168, %rsp /* stack alignment + 10 xmm registers */
	movaps		%xmm6, (%rsp)
	movaps		%xmm7, 16(%rsp)
	movaps		%xmm8, 32(%rsp)
	movaps		%xmm9, 48(%rsp)
	movaps		%xmm10, 64(%rsp)
	movaps		%xmm11, 80(%rsp)
	movaps		%xmm12, 96(%rsp)
	movaps		%xmm13, 112(%rsp)
	movaps		%xmm14, 128(%rsp)
	movaps		%xmm15, 144(%rsp)
#endif

	leaq		ASM_NAME(INT123_costab_x86_64)(%rip), %rcx

	MOVUAPS 	(ARG2), %xmm15
	MOVUAPS 	16(ARG2), %xmm14
	MOVUAPS 	112(ARG2), %xmm0
	MOVUAPS 	96(ARG2), %xmm1
	shufps 		$0x1b, %xmm0, %xmm0
	shufps 		$0x1b, %xmm1, %xmm1
	movaps 		%xmm15, %xmm8
	movaps		%xmm14, %xmm9
	addps 		%xmm0, %xmm8
	addps 		%xmm1, %xmm9
	subps 		%xmm0, %xmm15
	subps 		%xmm1, %xmm14
	
	MOVUAPS 	32(ARG2), %xmm13
	MOVUAPS 	48(ARG2), %xmm12
	MOVUAPS 	80(ARG2), %xmm0
	MOVUAPS 	64(ARG2), %xmm1
	shufps		$0x1b, %xmm0, %xmm0
	shufps		$0x1b, %xmm1, %xmm1
	movaps		%xmm13, %xmm10
	movaps		%xmm12, %xmm11
	addps		%xmm0, %xmm10
	addps		%xmm1, %xmm11
	subps		%xmm0, %xmm13
	subps		%xmm1, %xmm12
	
	movaps		(%rcx), %xmm0
	movaps		16(%rcx), %xmm1
	movaps		32(%rcx), %xmm2
	movaps		48(%rcx), %xmm3
	mulps		%xmm0, %xmm15
	mulps		%xmm1, %xmm14
	mulps		%xmm2, %xmm13
	mulps		%xmm3, %xmm12
	
	movaps		64(%rcx), %xmm0
	movaps		80(%rcx), %xmm1
	
	pshufd		$0x1b, %xmm11, %xmm2
	pshufd		$0x1b, %xmm10, %xmm3
	shufps		$0x1b, %xmm13, %xmm13
	shufps		$0x1b, %xmm12, %xmm12
	movaps		%xmm8, %xmm11
	movaps		%xmm9, %xmm10
	movaps		%xmm14, %xmm4
	movaps		%xmm15, %xmm5
	subps		%xmm2, %xmm11
	subps		%xmm3, %xmm10
	subps		%xmm13, %xmm14
	subps		%xmm12, %xmm15
	addps		%xmm2, %xmm8
	addps		%xmm3, %xmm9
	addps		%xmm5, %xmm12
	addps		%xmm4, %xmm13
	mulps		%xmm0, %xmm11
	mulps		%xmm1, %xmm10
	mulps		%xmm1, %xmm14
	mulps		%xmm0, %xmm15
	
	movaps		96(%rcx), %xmm0
	
	pshufd		$0x1b, %xmm9, %xmm1
	pshufd		$0x1b, %xmm13, %xmm2
	shufps		$0x1b, %xmm10, %xmm10
	shufps		$0x1b, %xmm14, %xmm14
	movaps		%xmm8, %xmm9
	movaps		%xmm12, %xmm13
	movaps		%xmm11, %xmm3
	movaps		%xmm15, %xmm4
	subps		%xmm1, %xmm9
	subps		%xmm2, %xmm13
	subps		%xmm10, %xmm11
	subps		%xmm14, %xmm15
	addps		%xmm1, %xmm8
	addps		%xmm2, %xmm12
	addps		%xmm3, %xmm10
	addps		%xmm4, %xmm14
	mulps		%xmm0, %xmm9
	mulps		%xmm0, %xmm13
	mulps		%xmm0, %xmm11
	mulps		%xmm0, %xmm15
	
	movaps		112(%rcx), %xmm0
	movaps		%xmm0, %xmm1
	movlhps		%xmm1, %xmm1
	
	movaps		%xmm8, %xmm2
	movaps		%xmm9, %xmm3
	shufps		$0x44, %xmm10, %xmm2
	shufps		$0xbb, %xmm11, %xmm9
	shufps		$0xbb, %xmm10, %xmm8
	shufps		$0x44, %xmm11, %xmm3
	movaps		%xmm2, %xmm4
	movaps		%xmm3, %xmm5
	subps		%xmm8, %xmm2
	subps		%xmm9, %xmm3
	addps		%xmm4, %xmm8
	addps		%xmm5, %xmm9
	mulps		%xmm1, %xmm2
	mulps		%xmm1, %xmm3
	movaps		%xmm8, %xmm10
	movaps		%xmm9, %xmm11
	shufps		$0x14, %xmm2, %xmm8
	shufps		$0xbe, %xmm2, %xmm10
	shufps		$0x14, %xmm3, %xmm9
	shufps		$0xbe, %xmm3, %xmm11
	
	movaps		%xmm12, %xmm2
	movaps		%xmm13, %xmm3
	shufps		$0x44, %xmm14, %xmm2
	shufps		$0xbb, %xmm15, %xmm13
	shufps		$0xbb, %xmm14, %xmm12
	shufps		$0x44, %xmm15, %xmm3
	movaps		%xmm2, %xmm4
	movaps		%xmm3, %xmm5
	subps		%xmm12, %xmm2
	subps		%xmm13, %xmm3
	addps		%xmm4, %xmm12
	addps		%xmm5, %xmm13
	mulps		%xmm1, %xmm2
	mulps		%xmm1, %xmm3
	movaps		%xmm12, %xmm14
	movaps		%xmm13, %xmm15
	shufps		$0x14, %xmm2, %xmm12
	shufps		$0xbe, %xmm2, %xmm14
	shufps		$0x14, %xmm3, %xmm13
	shufps		$0xbe, %xmm3, %xmm15
	
	shufps		$0xaa, %xmm0, %xmm0
	pcmpeqd		%xmm1, %xmm1
	pslld		$31, %xmm1
	psllq		$32, %xmm1
	xorps		%xmm1, %xmm0
	
	movaps		%xmm8, %xmm1
	movaps		%xmm10, %xmm2
	unpcklps	%xmm9, %xmm8
	unpckhps	%xmm9, %xmm1
	unpcklps	%xmm11, %xmm10
	unpckhps	%xmm11, %xmm2
	movaps		%xmm8, %xmm3
	movaps		%xmm10, %xmm4
	unpcklps	%xmm1, %xmm8
	unpckhps	%xmm1, %xmm3
	unpcklps	%xmm2, %xmm10
	unpckhps	%xmm2, %xmm4
	movaps		%xmm8, %xmm1
	movaps		%xmm10, %xmm2
	subps		%xmm3, %xmm1
	subps		%xmm4, %xmm2
	addps		%xmm3, %xmm8
	addps		%xmm4, %xmm10
	mulps		%xmm0, %xmm1
	mulps		%xmm0, %xmm2
	movaps		%xmm8, %xmm9
	movaps		%xmm10, %xmm11
	unpcklps	%xmm1, %xmm8
	unpckhps	%xmm1, %xmm9
	unpcklps	%xmm2, %xmm10
	unpckhps	%xmm2, %xmm11
	
	movaps		%xmm12, %xmm1
	movaps		%xmm14, %xmm2
	unpcklps	%xmm13, %xmm12
	unpckhps	%xmm13, %xmm1
	unpcklps	%xmm15, %xmm14
	unpckhps	%xmm15, %xmm2
	movaps		%xmm12, %xmm3
	movaps		%xmm14, %xmm4
	unpcklps	%xmm1, %xmm12
	unpckhps	%xmm1, %xmm3
	unpcklps	%xmm2, %xmm14
	unpckhps	%xmm2, %xmm4
	movaps		%xmm12, %xmm1
	movaps		%xmm14, %xmm2
	subps		%xmm3, %xmm1
	subps		%xmm4, %xmm2
	addps		%xmm3, %xmm12
	addps		%xmm4, %xmm14
	mulps		%xmm0, %xmm1
	mulps		%xmm0, %xmm2
	movaps		%xmm12, %xmm13
	movaps		%xmm14, %xmm15
	unpcklps	%xmm1, %xmm12
	unpckhps	%xmm1, %xmm13
	unpcklps	%xmm2, %xmm14
	unpckhps	%xmm2, %xmm15
	
	
	xorps		%xmm0, %xmm0
	xorps		%xmm1, %xmm1
	shufpd		$0x2, %xmm8, %xmm0
	shufpd		$0x2, %xmm9, %xmm1
	psrlq		$32, %xmm0
	psrlq		$32, %xmm1
	addps		%xmm0, %xmm8
	addps		%xmm1, %xmm9
	
	xorps		%xmm0, %xmm0
	xorps		%xmm1, %xmm1
	shufpd		$0x2, %xmm10, %xmm0
	shufpd		$0x2, %xmm11, %xmm1
	psrlq		$32, %xmm0
	psrlq		$32, %xmm1
	addps		%xmm0, %xmm10
	addps		%xmm1, %xmm11
	
	xorps		%xmm0, %xmm0
	xorps		%xmm1, %xmm1
	shufpd		$0x2, %xmm12, %xmm0
	shufpd		$0x2, %xmm13, %xmm1
	psrlq		$32, %xmm0
	psrlq		$32, %xmm1
	addps		%xmm0, %xmm12
	addps		%xmm1, %xmm13
	
	xorps		%xmm0, %xmm0
	xorps		%xmm1, %xmm1
	shufpd		$0x2, %xmm14, %xmm0
	shufpd		$0x2, %xmm15, %xmm1
	psrlq		$32, %xmm0
	psrlq		$32, %xmm1
	addps		%xmm0, %xmm14
	addps		%xmm1, %xmm15
	
	pshufd		$0x78, %xmm9, %xmm0
	pshufd		$0x78, %xmm11, %xmm1
	pshufd		$0x78, %xmm13, %xmm2
	pshufd		$0x78, %xmm15, %xmm3
	psrldq		$4, %xmm0
	psrldq		$4, %xmm1
	psrldq		$4, %xmm2
	psrldq		$4, %xmm3
	addps		%xmm0, %xmm9
	addps		%xmm1, %xmm11
	addps		%xmm2, %xmm13
	addps		%xmm3, %xmm15
	
	pshufd		$0x78, %xmm10, %xmm0
	pshufd		$0x78, %xmm14, %xmm1
	psrldq		$4, %xmm0
	psrldq		$4, %xmm1
	addps		%xmm11, %xmm10
	addps		%xmm15, %xmm14
	addps		%xmm0, %xmm11
	addps		%xmm1, %xmm15
	
	cvtps2dq	%xmm8, %xmm8
	cvtps2dq	%xmm9, %xmm9
	cvtps2dq	%xmm10, %xmm10
	cvtps2dq	%xmm11, %xmm11
	packssdw	%xmm10, %xmm8
	packssdw	%xmm11, %xmm9
	
	movd		%xmm8, %eax
	movd		%xmm9, %ecx
	movw		%ax, 512(ARG0)
	movw		%cx, 384(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, (ARG0)
	movw		%ax, (ARG1)
	movw		%cx, 128(ARG1)
	
	movhlps		%xmm8, %xmm0
	movhlps		%xmm9, %xmm1
	movd		%xmm0, %eax
	movd		%xmm1, %ecx
	movw		%ax, 448(ARG0)
	movw		%cx, 320(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, 64(ARG1)
	movw		%cx, 192(ARG1)
	
	pshuflw		$0xee, %xmm8, %xmm2
	pshuflw		$0xee, %xmm9, %xmm3
	movd		%xmm2, %eax
	movd		%xmm3, %ecx
	movw		%ax, 256(ARG0)
	movw		%cx, 128(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, 256(ARG1)
	movw		%cx, 384(ARG1)
	
	pshuflw		$0xee, %xmm0, %xmm0
	pshuflw		$0xee, %xmm1, %xmm1
	movd		%xmm0, %eax
	movd		%xmm1, %ecx
	movw		%ax, 192(ARG0)
	movw		%cx, 64(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, 320(ARG1)
	movw		%cx, 448(ARG1)
	
	movaps		%xmm12, %xmm0
	movaps		%xmm13, %xmm1
	movaps		%xmm14, %xmm2
	movaps		%xmm15, %xmm3
	shufps		$0x1e, %xmm0, %xmm0
	pslldq		$4, %xmm0
	psrldq		$4, %xmm0
	addps		%xmm2, %xmm12
	addps		%xmm3, %xmm13
	addps		%xmm1, %xmm14
	addps		%xmm0, %xmm15
	
	cvtps2dq	%xmm12, %xmm12
	cvtps2dq	%xmm13, %xmm13
	cvtps2dq	%xmm14, %xmm14
	cvtps2dq	%xmm15, %xmm15
	packssdw	%xmm13, %xmm12
	packssdw	%xmm15, %xmm14
	
	movd		%xmm12, %eax
	movd		%xmm14, %ecx
	movw		%ax, 480(ARG0)
	movw		%cx, 416(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, 32(ARG1)
	movw		%cx, 96(ARG1)
	
	pshuflw		$0xee, %xmm12, %xmm0
	pshuflw		$0xee, %xmm14, %xmm1
	movd		%xmm0, %eax
	movd		%xmm1, %ecx
	movw		%ax, 224(ARG0)
	movw		%cx, 160(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, 288(ARG1)
	movw		%cx, 352(ARG1)
	
	movhlps		%xmm12, %xmm0
	movhlps		%xmm14, %xmm1
	movd		%xmm0, %eax
	movd		%xmm1, %ecx
	movw		%ax, 352(ARG0)
	movw		%cx, 288(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, 160(ARG1)
	movw		%cx, 224(ARG1)
	
	pshuflw		$0xee, %xmm0, %xmm0
	pshuflw		$0xee, %xmm1, %xmm1
	movd		%xmm0, %eax
	movd		%xmm1, %ecx
	movw		%ax, 96(ARG0)
	movw		%cx, 32(ARG0)
	shrl		$16, %eax
	shrl		$16, %ecx
	movw		%ax, 416(ARG1)
	movw		%cx, 480(ARG1)
	
#ifdef IS_MSABI
	movaps		(%rsp), %xmm6
	movaps		16(%rsp), %xmm7
	movaps		32(%rsp), %xmm8
	movaps		48(%rsp), %xmm9
	movaps		64(%rsp), %xmm10
	movaps		80(%rsp), %xmm11
	movaps		96(%rsp), %xmm12
	movaps		112(%rsp), %xmm13
	movaps		128(%rsp), %xmm14
	movaps		144(%rsp), %xmm15
	addq		$168, %rsp
#endif
	ret

NONEXEC_STACK
