638 lines
17 KiB
NASM
638 lines
17 KiB
NASM
;
|
|
; jcphuff-sse2.asm - prepare data for progressive Huffman encoding
|
|
; (64-bit SSE2)
|
|
;
|
|
; Copyright (C) 2016, 2018, Matthieu Darbois
|
|
;
|
|
; Based on the x86 SIMD extension for IJG JPEG library
|
|
; Copyright (C) 1999-2006, MIYASAKA Masaru.
|
|
; For conditions of distribution and use, see copyright notice in jsimdext.inc
|
|
;
|
|
; This file should be assembled with NASM (Netwide Assembler),
|
|
; can *not* be assembled with Microsoft's MASM or any compatible
|
|
; assembler (including Borland's Turbo Assembler).
|
|
; NASM is available from http://nasm.sourceforge.net/ or
|
|
; http://sourceforge.net/project/showfiles.php?group_id=6208
|
|
;
|
|
; This file contains an SSE2 implementation of data preparation for progressive
|
|
; Huffman encoding. See jcphuff.c for more details.
|
|
|
|
%include "jsimdext.inc"
|
|
|
|
; --------------------------------------------------------------------------
|
|
SECTION SEG_TEXT
|
|
BITS 64
|
|
|
|
; --------------------------------------------------------------------------
|
|
; Macros to load data for jsimd_encode_mcu_AC_first_prepare_sse2() and
|
|
; jsimd_encode_mcu_AC_refine_prepare_sse2()
|
|
|
|
%macro LOAD16 0
|
|
pxor N0, N0
|
|
pxor N1, N1
|
|
|
|
mov T0d, INT [LUT + 0*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 8*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 0
|
|
pinsrw X1, word [BLOCK + T1 * 2], 0
|
|
|
|
mov T0d, INT [LUT + 1*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 9*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 1
|
|
pinsrw X1, word [BLOCK + T1 * 2], 1
|
|
|
|
mov T0d, INT [LUT + 2*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 10*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 2
|
|
pinsrw X1, word [BLOCK + T1 * 2], 2
|
|
|
|
mov T0d, INT [LUT + 3*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 11*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 3
|
|
pinsrw X1, word [BLOCK + T1 * 2], 3
|
|
|
|
mov T0d, INT [LUT + 4*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 12*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 4
|
|
pinsrw X1, word [BLOCK + T1 * 2], 4
|
|
|
|
mov T0d, INT [LUT + 5*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 13*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 5
|
|
pinsrw X1, word [BLOCK + T1 * 2], 5
|
|
|
|
mov T0d, INT [LUT + 6*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 14*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 6
|
|
pinsrw X1, word [BLOCK + T1 * 2], 6
|
|
|
|
mov T0d, INT [LUT + 7*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 15*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 7
|
|
pinsrw X1, word [BLOCK + T1 * 2], 7
|
|
%endmacro
|
|
|
|
%macro LOAD15 0
|
|
pxor N0, N0
|
|
pxor N1, N1
|
|
pxor X1, X1
|
|
|
|
mov T0d, INT [LUT + 0*SIZEOF_INT]
|
|
mov T1d, INT [LUT + 8*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 0
|
|
pinsrw X1, word [BLOCK + T1 * 2], 0
|
|
|
|
mov T0d, INT [LUT + 1*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 1
|
|
|
|
mov T0d, INT [LUT + 2*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 2
|
|
|
|
mov T0d, INT [LUT + 3*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 3
|
|
|
|
mov T0d, INT [LUT + 4*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 4
|
|
|
|
mov T0d, INT [LUT + 5*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 5
|
|
|
|
mov T0d, INT [LUT + 6*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 6
|
|
|
|
mov T0d, INT [LUT + 7*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 7
|
|
|
|
cmp LENEND, 2
|
|
jl %%.ELOAD15
|
|
mov T1d, INT [LUT + 9*SIZEOF_INT]
|
|
pinsrw X1, word [BLOCK + T1 * 2], 1
|
|
|
|
cmp LENEND, 3
|
|
jl %%.ELOAD15
|
|
mov T1d, INT [LUT + 10*SIZEOF_INT]
|
|
pinsrw X1, word [BLOCK + T1 * 2], 2
|
|
|
|
cmp LENEND, 4
|
|
jl %%.ELOAD15
|
|
mov T1d, INT [LUT + 11*SIZEOF_INT]
|
|
pinsrw X1, word [BLOCK + T1 * 2], 3
|
|
|
|
cmp LENEND, 5
|
|
jl %%.ELOAD15
|
|
mov T1d, INT [LUT + 12*SIZEOF_INT]
|
|
pinsrw X1, word [BLOCK + T1 * 2], 4
|
|
|
|
cmp LENEND, 6
|
|
jl %%.ELOAD15
|
|
mov T1d, INT [LUT + 13*SIZEOF_INT]
|
|
pinsrw X1, word [BLOCK + T1 * 2], 5
|
|
|
|
cmp LENEND, 7
|
|
jl %%.ELOAD15
|
|
mov T1d, INT [LUT + 14*SIZEOF_INT]
|
|
pinsrw X1, word [BLOCK + T1 * 2], 6
|
|
%%.ELOAD15:
|
|
%endmacro
|
|
|
|
%macro LOAD8 0
|
|
pxor N0, N0
|
|
|
|
mov T0d, INT [LUT + 0*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 0
|
|
|
|
mov T0d, INT [LUT + 1*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 1
|
|
|
|
mov T0d, INT [LUT + 2*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 2
|
|
|
|
mov T0d, INT [LUT + 3*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 3
|
|
|
|
mov T0d, INT [LUT + 4*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 4
|
|
|
|
mov T0d, INT [LUT + 5*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 5
|
|
|
|
mov T0d, INT [LUT + 6*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 6
|
|
|
|
mov T0d, INT [LUT + 7*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T0 * 2], 7
|
|
%endmacro
|
|
|
|
%macro LOAD7 0
|
|
pxor N0, N0
|
|
pxor X0, X0
|
|
|
|
mov T1d, INT [LUT + 0*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T1 * 2], 0
|
|
|
|
cmp LENEND, 2
|
|
jl %%.ELOAD7
|
|
mov T1d, INT [LUT + 1*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T1 * 2], 1
|
|
|
|
cmp LENEND, 3
|
|
jl %%.ELOAD7
|
|
mov T1d, INT [LUT + 2*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T1 * 2], 2
|
|
|
|
cmp LENEND, 4
|
|
jl %%.ELOAD7
|
|
mov T1d, INT [LUT + 3*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T1 * 2], 3
|
|
|
|
cmp LENEND, 5
|
|
jl %%.ELOAD7
|
|
mov T1d, INT [LUT + 4*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T1 * 2], 4
|
|
|
|
cmp LENEND, 6
|
|
jl %%.ELOAD7
|
|
mov T1d, INT [LUT + 5*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T1 * 2], 5
|
|
|
|
cmp LENEND, 7
|
|
jl %%.ELOAD7
|
|
mov T1d, INT [LUT + 6*SIZEOF_INT]
|
|
pinsrw X0, word [BLOCK + T1 * 2], 6
|
|
%%.ELOAD7:
|
|
%endmacro
|
|
|
|
%macro REDUCE0 0
|
|
movdqa xmm0, XMMWORD [VALUES + ( 0*2)]
|
|
movdqa xmm1, XMMWORD [VALUES + ( 8*2)]
|
|
movdqa xmm2, XMMWORD [VALUES + (16*2)]
|
|
movdqa xmm3, XMMWORD [VALUES + (24*2)]
|
|
movdqa xmm4, XMMWORD [VALUES + (32*2)]
|
|
movdqa xmm5, XMMWORD [VALUES + (40*2)]
|
|
movdqa xmm6, XMMWORD [VALUES + (48*2)]
|
|
movdqa xmm7, XMMWORD [VALUES + (56*2)]
|
|
|
|
pcmpeqw xmm0, ZERO
|
|
pcmpeqw xmm1, ZERO
|
|
pcmpeqw xmm2, ZERO
|
|
pcmpeqw xmm3, ZERO
|
|
pcmpeqw xmm4, ZERO
|
|
pcmpeqw xmm5, ZERO
|
|
pcmpeqw xmm6, ZERO
|
|
pcmpeqw xmm7, ZERO
|
|
|
|
packsswb xmm0, xmm1
|
|
packsswb xmm2, xmm3
|
|
packsswb xmm4, xmm5
|
|
packsswb xmm6, xmm7
|
|
|
|
pmovmskb eax, xmm0
|
|
pmovmskb ecx, xmm2
|
|
pmovmskb edx, xmm4
|
|
pmovmskb esi, xmm6
|
|
|
|
shl rcx, 16
|
|
shl rdx, 32
|
|
shl rsi, 48
|
|
|
|
or rax, rcx
|
|
or rdx, rsi
|
|
or rax, rdx
|
|
|
|
not rax
|
|
|
|
mov MMWORD [r15], rax
|
|
%endmacro
|
|
|
|
;
|
|
; Prepare data for jsimd_encode_mcu_AC_first().
|
|
;
|
|
; GLOBAL(void)
|
|
; jsimd_encode_mcu_AC_first_prepare_sse2(const JCOEF *block,
|
|
; const int *jpeg_natural_order_start,
|
|
; int Sl, int Al, JCOEF *values,
|
|
; size_t *zerobits)
|
|
;
|
|
; r10 = const JCOEF *block
|
|
; r11 = const int *jpeg_natural_order_start
|
|
; r12 = int Sl
|
|
; r13 = int Al
|
|
; r14 = JCOEF *values
|
|
; r15 = size_t *zerobits
|
|
|
|
%define ZERO xmm9
|
|
%define X0 xmm0
|
|
%define X1 xmm1
|
|
%define N0 xmm2
|
|
%define N1 xmm3
|
|
%define AL xmm4
|
|
%define K eax
|
|
%define LUT r11
|
|
%define T0 rcx
|
|
%define T0d ecx
|
|
%define T1 rdx
|
|
%define T1d edx
|
|
%define BLOCK r10
|
|
%define VALUES r14
|
|
%define LEN r12d
|
|
%define LENEND r13d
|
|
|
|
align 32
|
|
GLOBAL_FUNCTION(jsimd_encode_mcu_AC_first_prepare_sse2)
|
|
|
|
EXTN(jsimd_encode_mcu_AC_first_prepare_sse2):
|
|
push rbp
|
|
mov rax, rsp ; rax = original rbp
|
|
sub rsp, byte 4
|
|
and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
|
|
mov [rsp], rax
|
|
mov rbp, rsp ; rbp = aligned rbp
|
|
lea rsp, [rbp - 16]
|
|
collect_args 6
|
|
|
|
movdqa XMMWORD [rbp - 16], ZERO
|
|
|
|
movd AL, r13d
|
|
pxor ZERO, ZERO
|
|
mov K, LEN
|
|
mov LENEND, LEN
|
|
and K, -16
|
|
and LENEND, 7
|
|
shr K, 4
|
|
jz .ELOOP16
|
|
.BLOOP16:
|
|
LOAD16
|
|
pcmpgtw N0, X0
|
|
pcmpgtw N1, X1
|
|
paddw X0, N0
|
|
paddw X1, N1
|
|
pxor X0, N0
|
|
pxor X1, N1
|
|
psrlw X0, AL
|
|
psrlw X1, AL
|
|
pxor N0, X0
|
|
pxor N1, X1
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
movdqa XMMWORD [VALUES + (8) * 2], X1
|
|
movdqa XMMWORD [VALUES + (0 + DCTSIZE2) * 2], N0
|
|
movdqa XMMWORD [VALUES + (8 + DCTSIZE2) * 2], N1
|
|
add VALUES, 16*2
|
|
add LUT, 16*SIZEOF_INT
|
|
dec K
|
|
jnz .BLOOP16
|
|
test LEN, 15
|
|
je .PADDING
|
|
.ELOOP16:
|
|
test LEN, 8
|
|
jz .TRY7
|
|
test LEN, 7
|
|
jz .TRY8
|
|
|
|
LOAD15
|
|
pcmpgtw N0, X0
|
|
pcmpgtw N1, X1
|
|
paddw X0, N0
|
|
paddw X1, N1
|
|
pxor X0, N0
|
|
pxor X1, N1
|
|
psrlw X0, AL
|
|
psrlw X1, AL
|
|
pxor N0, X0
|
|
pxor N1, X1
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
movdqa XMMWORD [VALUES + (8) * 2], X1
|
|
movdqa XMMWORD [VALUES + (0 + DCTSIZE2) * 2], N0
|
|
movdqa XMMWORD [VALUES + (8 + DCTSIZE2) * 2], N1
|
|
add VALUES, 16*2
|
|
jmp .PADDING
|
|
.TRY8:
|
|
LOAD8
|
|
pcmpgtw N0, X0
|
|
paddw X0, N0
|
|
pxor X0, N0
|
|
psrlw X0, AL
|
|
pxor N0, X0
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
movdqa XMMWORD [VALUES + (0 + DCTSIZE2) * 2], N0
|
|
add VALUES, 8*2
|
|
jmp .PADDING
|
|
.TRY7:
|
|
LOAD7
|
|
pcmpgtw N0, X0
|
|
paddw X0, N0
|
|
pxor X0, N0
|
|
psrlw X0, AL
|
|
pxor N0, X0
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
movdqa XMMWORD [VALUES + (0 + DCTSIZE2) * 2], N0
|
|
add VALUES, 8*2
|
|
.PADDING:
|
|
mov K, LEN
|
|
add K, 7
|
|
and K, -8
|
|
shr K, 3
|
|
sub K, DCTSIZE2/8
|
|
jz .EPADDING
|
|
align 16
|
|
.ZEROLOOP:
|
|
movdqa XMMWORD [VALUES + 0], ZERO
|
|
add VALUES, 8*2
|
|
inc K
|
|
jnz .ZEROLOOP
|
|
.EPADDING:
|
|
sub VALUES, DCTSIZE2*2
|
|
|
|
REDUCE0
|
|
|
|
movdqa ZERO, XMMWORD [rbp - 16]
|
|
uncollect_args 6
|
|
mov rsp, rbp ; rsp <- aligned rbp
|
|
pop rsp ; rsp <- original rbp
|
|
pop rbp
|
|
ret
|
|
|
|
%undef ZERO
|
|
%undef X0
|
|
%undef X1
|
|
%undef N0
|
|
%undef N1
|
|
%undef AL
|
|
%undef K
|
|
%undef LUT
|
|
%undef T0
|
|
%undef T0d
|
|
%undef T1
|
|
%undef T1d
|
|
%undef BLOCK
|
|
%undef VALUES
|
|
%undef LEN
|
|
%undef LENEND
|
|
|
|
;
|
|
; Prepare data for jsimd_encode_mcu_AC_refine().
|
|
;
|
|
; GLOBAL(int)
|
|
; jsimd_encode_mcu_AC_refine_prepare_sse2(const JCOEF *block,
|
|
; const int *jpeg_natural_order_start,
|
|
; int Sl, int Al, JCOEF *absvalues,
|
|
; size_t *bits)
|
|
;
|
|
; r10 = const JCOEF *block
|
|
; r11 = const int *jpeg_natural_order_start
|
|
; r12 = int Sl
|
|
; r13 = int Al
|
|
; r14 = JCOEF *values
|
|
; r15 = size_t *bits
|
|
|
|
%define ZERO xmm9
|
|
%define ONE xmm5
|
|
%define X0 xmm0
|
|
%define X1 xmm1
|
|
%define N0 xmm2
|
|
%define N1 xmm3
|
|
%define AL xmm4
|
|
%define K eax
|
|
%define KK r9d
|
|
%define EOB r8d
|
|
%define SIGN rdi
|
|
%define LUT r11
|
|
%define T0 rcx
|
|
%define T0d ecx
|
|
%define T1 rdx
|
|
%define T1d edx
|
|
%define BLOCK r10
|
|
%define VALUES r14
|
|
%define LEN r12d
|
|
%define LENEND r13d
|
|
|
|
align 32
|
|
GLOBAL_FUNCTION(jsimd_encode_mcu_AC_refine_prepare_sse2)
|
|
|
|
EXTN(jsimd_encode_mcu_AC_refine_prepare_sse2):
|
|
push rbp
|
|
mov rax, rsp ; rax = original rbp
|
|
sub rsp, byte 4
|
|
and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
|
|
mov [rsp], rax
|
|
mov rbp, rsp ; rbp = aligned rbp
|
|
lea rsp, [rbp - 16]
|
|
collect_args 6
|
|
|
|
movdqa XMMWORD [rbp - 16], ZERO
|
|
|
|
xor SIGN, SIGN
|
|
xor EOB, EOB
|
|
xor KK, KK
|
|
movd AL, r13d
|
|
pxor ZERO, ZERO
|
|
pcmpeqw ONE, ONE
|
|
psrlw ONE, 15
|
|
mov K, LEN
|
|
mov LENEND, LEN
|
|
and K, -16
|
|
and LENEND, 7
|
|
shr K, 4
|
|
jz .ELOOPR16
|
|
.BLOOPR16:
|
|
LOAD16
|
|
pcmpgtw N0, X0
|
|
pcmpgtw N1, X1
|
|
paddw X0, N0
|
|
paddw X1, N1
|
|
pxor X0, N0
|
|
pxor X1, N1
|
|
psrlw X0, AL
|
|
psrlw X1, AL
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
movdqa XMMWORD [VALUES + (8) * 2], X1
|
|
pcmpeqw X0, ONE
|
|
pcmpeqw X1, ONE
|
|
packsswb N0, N1
|
|
packsswb X0, X1
|
|
pmovmskb T0d, N0 ; lsignbits.val16u[k>>4] = _mm_movemask_epi8(neg);
|
|
pmovmskb T1d, X0 ; idx = _mm_movemask_epi8(x1);
|
|
shr SIGN, 16 ; make room for sizebits
|
|
shl T0, 48
|
|
or SIGN, T0
|
|
bsr T1d, T1d ; idx = 16 - (__builtin_clz(idx)>>1);
|
|
jz .CONTINUER16 ; if (idx) {
|
|
mov EOB, KK
|
|
add EOB, T1d ; EOB = k + idx;
|
|
.CONTINUER16:
|
|
add VALUES, 16*2
|
|
add LUT, 16*SIZEOF_INT
|
|
add KK, 16
|
|
dec K
|
|
jnz .BLOOPR16
|
|
.ELOOPR16:
|
|
test LEN, 8
|
|
jz .TRYR7
|
|
test LEN, 7
|
|
jz .TRYR8
|
|
|
|
LOAD15
|
|
pcmpgtw N0, X0
|
|
pcmpgtw N1, X1
|
|
paddw X0, N0
|
|
paddw X1, N1
|
|
pxor X0, N0
|
|
pxor X1, N1
|
|
psrlw X0, AL
|
|
psrlw X1, AL
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
movdqa XMMWORD [VALUES + (8) * 2], X1
|
|
pcmpeqw X0, ONE
|
|
pcmpeqw X1, ONE
|
|
packsswb N0, N1
|
|
packsswb X0, X1
|
|
pmovmskb T0d, N0 ; lsignbits.val16u[k>>4] = _mm_movemask_epi8(neg);
|
|
pmovmskb T1d, X0 ; idx = _mm_movemask_epi8(x1);
|
|
shr SIGN, 16 ; make room for sizebits
|
|
shl T0, 48
|
|
or SIGN, T0
|
|
bsr T1d, T1d ; idx = 16 - (__builtin_clz(idx)>>1);
|
|
jz .CONTINUER15 ; if (idx) {
|
|
mov EOB, KK
|
|
add EOB, T1d ; EOB = k + idx;
|
|
.CONTINUER15:
|
|
add VALUES, 16*2
|
|
jmp .PADDINGR
|
|
.TRYR8:
|
|
LOAD8
|
|
|
|
pcmpgtw N0, X0
|
|
paddw X0, N0
|
|
pxor X0, N0
|
|
psrlw X0, AL
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
pcmpeqw X0, ONE
|
|
packsswb N0, ZERO
|
|
packsswb X0, ZERO
|
|
pmovmskb T0d, N0 ; lsignbits.val16u[k>>4] = _mm_movemask_epi8(neg);
|
|
pmovmskb T1d, X0 ; idx = _mm_movemask_epi8(x1);
|
|
shr SIGN, 8 ; make room for sizebits
|
|
shl T0, 56
|
|
or SIGN, T0
|
|
bsr T1d, T1d ; idx = 16 - (__builtin_clz(idx)>>1);
|
|
jz .CONTINUER8 ; if (idx) {
|
|
mov EOB, KK
|
|
add EOB, T1d ; EOB = k + idx;
|
|
.CONTINUER8:
|
|
add VALUES, 8*2
|
|
jmp .PADDINGR
|
|
.TRYR7:
|
|
LOAD7
|
|
|
|
pcmpgtw N0, X0
|
|
paddw X0, N0
|
|
pxor X0, N0
|
|
psrlw X0, AL
|
|
movdqa XMMWORD [VALUES + (0) * 2], X0
|
|
pcmpeqw X0, ONE
|
|
packsswb N0, ZERO
|
|
packsswb X0, ZERO
|
|
pmovmskb T0d, N0 ; lsignbits.val16u[k>>4] = _mm_movemask_epi8(neg);
|
|
pmovmskb T1d, X0 ; idx = _mm_movemask_epi8(x1);
|
|
shr SIGN, 8 ; make room for sizebits
|
|
shl T0, 56
|
|
or SIGN, T0
|
|
bsr T1d, T1d ; idx = 16 - (__builtin_clz(idx)>>1);
|
|
jz .CONTINUER7 ; if (idx) {
|
|
mov EOB, KK
|
|
add EOB, T1d ; EOB = k + idx;
|
|
.CONTINUER7:
|
|
add VALUES, 8*2
|
|
.PADDINGR:
|
|
mov K, LEN
|
|
add K, 7
|
|
and K, -8
|
|
shr K, 3
|
|
sub K, DCTSIZE2/8
|
|
jz .EPADDINGR
|
|
align 16
|
|
.ZEROLOOPR:
|
|
movdqa XMMWORD [VALUES + 0], ZERO
|
|
shr SIGN, 8
|
|
add VALUES, 8*2
|
|
inc K
|
|
jnz .ZEROLOOPR
|
|
.EPADDINGR:
|
|
not SIGN
|
|
sub VALUES, DCTSIZE2*2
|
|
mov MMWORD [r15+SIZEOF_MMWORD], SIGN
|
|
|
|
REDUCE0
|
|
|
|
mov eax, EOB
|
|
movdqa ZERO, XMMWORD [rbp - 16]
|
|
uncollect_args 6
|
|
mov rsp, rbp ; rsp <- aligned rbp
|
|
pop rsp ; rsp <- original rbp
|
|
pop rbp
|
|
ret
|
|
|
|
%undef ZERO
|
|
%undef ONE
|
|
%undef X0
|
|
%undef X1
|
|
%undef N0
|
|
%undef N1
|
|
%undef AL
|
|
%undef K
|
|
%undef KK
|
|
%undef EOB
|
|
%undef SIGN
|
|
%undef LUT
|
|
%undef T0
|
|
%undef T0d
|
|
%undef T1
|
|
%undef T1d
|
|
%undef BLOCK
|
|
%undef VALUES
|
|
%undef LEN
|
|
%undef LENEND
|
|
|
|
; For some reason, the OS X linker does not honor the request to align the
|
|
; segment unless we do this.
|
|
align 32
|