x86: fft: convert sse inline asm to yasm

libavcodec/x86/Makefile

@@ -39,7 +39,6 @@ YASM-OBJS-$(CONFIG_DCT)                += x86/dct32_sse.o
 YASM-OBJS-$(CONFIG_ENCODERS)           += x86/dsputilenc_yasm.o
 YASM-OBJS-FFT-$(HAVE_AMD3DNOW)         += x86/fft_3dn.o
 YASM-OBJS-FFT-$(HAVE_AMD3DNOWEXT)      += x86/fft_3dn2.o
-YASM-OBJS-FFT-$(HAVE_SSE)              += x86/fft_sse.o
 YASM-OBJS-$(CONFIG_FFT)                += x86/fft_mmx.o                 \
                                           $(YASM-OBJS-FFT-yes)
 YASM-OBJS-$(CONFIG_H264CHROMA)         += x86/h264_chromamc.o           \

libavcodec/x86/fft_mmx.asm

@@ -45,6 +45,10 @@ struc FFTContext
     .mdctbits: resd 1
     .tcos:     pointer 1
     .tsin:     pointer 1
+    .fftperm:  pointer 1
+    .fftcalc:  pointer 1
+    .imdctcalc:pointer 1
+    .imdcthalf:pointer 1
 endstruc
 
 SECTION_RODATA
@@ -65,6 +69,7 @@ perm1: dd 0x00, 0x02, 0x03, 0x01, 0x03, 0x00, 0x02, 0x01
 perm2: dd 0x00, 0x01, 0x02, 0x03, 0x01, 0x00, 0x02, 0x03
 ps_p1p1m1p1root2: dd 1.0, 1.0, -1.0, 1.0, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2
 ps_m1m1p1m1p1m1m1m1: dd 1<<31, 1<<31, 0, 1<<31, 0, 1<<31, 1<<31, 1<<31
+ps_m1m1m1m1: times 4 dd 1<<31
 ps_m1p1: dd 1<<31, 0
 
 %assign i 16
@@ -532,6 +537,16 @@ DEFINE_ARGS z, w, n, o1, o3
     rep ret
 %endmacro
 
+%macro FFT_DISPATCH 2; clobbers 5 GPRs, 8 XMMs
+    lea r2, [dispatch_tab%1]
+    mov r2, [r2 + (%2q-2)*gprsize]
+%ifdef PIC
+    lea r3, [$$]
+    add r2, r3
+%endif
+    call r2
+%endmacro ; FFT_DISPATCH
+
 INIT_YMM avx
 
 %if HAVE_AVX
@@ -548,6 +563,14 @@ INIT_YMM avx
 
 DECL_PASS pass_avx, PASS_BIG 1
 DECL_PASS pass_interleave_avx, PASS_BIG 0
+
+cglobal fft_calc, 2,5,8
+    mov     r3d, [r0 + FFTContext.nbits]
+    mov     r0, r1
+    mov     r1, r3
+    FFT_DISPATCH _interleave %+ SUFFIX, r1
+    REP_RET
+
 %endif
 
 INIT_XMM sse
@@ -565,6 +588,112 @@ INIT_XMM sse
 DECL_PASS pass_sse, PASS_BIG 1
 DECL_PASS pass_interleave_sse, PASS_BIG 0
 
+cglobal fft_calc, 2,5,8
+    mov     r3d, [r0 + FFTContext.nbits]
+    PUSH    r1
+    PUSH    r3
+    mov     r0, r1
+    mov     r1, r3
+    FFT_DISPATCH _interleave %+ SUFFIX, r1
+    POP     rcx
+    POP     r4
+    cmp     rcx, 4
+    jg      .end
+    mov     r2, -1
+    add     rcx, 3
+    shl     r2, cl
+    sub     r4, r2
+.loop
+    movaps   xmm0, [r4 + r2]
+    movaps   xmm1, xmm0
+    unpcklps xmm0, [r4 + r2 + 16]
+    unpckhps xmm1, [r4 + r2 + 16]
+    movaps   [r4 + r2],      xmm0
+    movaps   [r4 + r2 + 16], xmm1
+    add      r2, 32
+    jl       .loop
+.end:
+    REP_RET
+
+cextern_naked memcpy
+
+cglobal fft_permute, 2,7,1
+    mov     r4,  [r0 + FFTContext.revtab]
+    mov     r5,  [r0 + FFTContext.tmpbuf]
+    mov     ecx, [r0 + FFTContext.nbits]
+    mov     r2, 1
+    shl     r2, cl
+    xor     r0, r0
+%if ARCH_X86_32
+    mov     r1, r1m
+%endif
+.loop:
+    movaps  xmm0, [r1 + 8*r0]
+    movzx   r6, word [r4 + 2*r0]
+    movzx   r3, word [r4 + 2*r0 + 2]
+    movlps  [r5 + 8*r6], xmm0
+    movhps  [r5 + 8*r3], xmm0
+    add     r0, 2
+    cmp     r0, r2
+    jl      .loop
+    shl     r2, 3
+%if ARCH_X86_64
+    mov     r0, r1
+    mov     r1, r5
+%else
+    push    r2
+    push    r5
+    push    r1
+%endif
+%if ARCH_X86_64 && WIN64 == 0
+    jmp     memcpy
+%else
+    call    memcpy
+%if ARCH_X86_32
+    add     esp, 12
+%endif
+    REP_RET
+%endif
+
+cglobal imdct_calc, 3,5,3
+    mov     r3d, [r0 + FFTContext.mdctsize]
+    mov     r4,  [r0 + FFTContext.imdcthalf]
+    add     r1,  r3
+    PUSH    r3
+    PUSH    r1
+%if ARCH_X86_32
+    push    r2
+    push    r1
+    push    r0
+%else
+    sub     rsp, 8
+%endif
+    call    r4
+%if ARCH_X86_32
+    add     esp, 12
+%else
+    add     rsp, 8
+%endif
+    POP     r1
+    POP     r3
+    lea     r0, [r1 + 2*r3]
+    mov     r2, r3
+    sub     r3, 16
+    neg     r2
+    movaps  xmm2, [ps_m1m1m1m1]
+.loop:
+    movaps  xmm0, [r1 + r3]
+    movaps  xmm1, [r0 + r2]
+    shufps  xmm0, xmm0, 0x1b
+    shufps  xmm1, xmm1, 0x1b
+    xorps   xmm0, xmm2
+    movaps  [r0 + r3], xmm1
+    movaps  [r1 + r2], xmm0
+    sub     r3, 16
+    add     r2, 16
+    jl      .loop
+    REP_RET
+
 INIT_MMX 3dnow
 %define mulps pfmul
 %define addps pfadd
@@ -582,16 +711,6 @@ DECL_PASS pass_interleave_3dnow, PASS_BIG 0
 %define SECTION_REL
 %endif
 
-%macro FFT_DISPATCH 2; clobbers 5 GPRs, 8 XMMs
-    lea r2, [dispatch_tab%1]
-    mov r2, [r2 + (%2q-2)*gprsize]
-%ifdef PIC
-    lea r3, [$$]
-    add r2, r3
-%endif
-    call r2
-%endmacro ; FFT_DISPATCH
-
 %macro DECL_FFT 1-2 ; nbits, suffix
 %ifidn %0, 1
 %xdefine fullsuffix SUFFIX

libavcodec/x86/fft_sse.c

-/*
- * FFT/MDCT transform with SSE optimizations
- * Copyright (c) 2008 Loren Merritt
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/x86_cpu.h"
-#include "libavcodec/dsputil.h"
-#include "fft.h"
-#include "config.h"
-
-DECLARE_ASM_CONST(16, unsigned int, ff_m1m1m1m1)[4] =
-    { 1U << 31, 1U << 31, 1U << 31, 1U << 31 };
-
-void ff_fft_dispatch_sse(FFTComplex *z, int nbits);
-void ff_fft_dispatch_interleave_sse(FFTComplex *z, int nbits);
-void ff_fft_dispatch_interleave_avx(FFTComplex *z, int nbits);
-
-#if HAVE_AVX
-void ff_fft_calc_avx(FFTContext *s, FFTComplex *z)
-{
-    ff_fft_dispatch_interleave_avx(z, s->nbits);
-}
-#endif
-
-void ff_fft_calc_sse(FFTContext *s, FFTComplex *z)
-{
-    int n = 1 << s->nbits;
-
-    ff_fft_dispatch_interleave_sse(z, s->nbits);
-
-    if(n <= 16) {
-        x86_reg i = -8*n;
-        __asm__ volatile(
-            "1: \n"
-            "movaps     (%0,%1), %%xmm0 \n"
-            "movaps      %%xmm0, %%xmm1 \n"
-            "unpcklps 16(%0,%1), %%xmm0 \n"
-            "unpckhps 16(%0,%1), %%xmm1 \n"
-            "movaps      %%xmm0,   (%0,%1) \n"
-            "movaps      %%xmm1, 16(%0,%1) \n"
-            "add $32, %0 \n"
-            "jl 1b \n"
-            :"+r"(i)
-            :"r"(z+n)
-            :"memory"
-        );
-    }
-}
-
-void ff_fft_permute_sse(FFTContext *s, FFTComplex *z)
-{
-    int n = 1 << s->nbits;
-    int i;
-    for(i=0; i<n; i+=2) {
-        __asm__ volatile(
-            "movaps %2, %%xmm0 \n"
-            "movlps %%xmm0, %0 \n"
-            "movhps %%xmm0, %1 \n"
-            :"=m"(s->tmp_buf[s->revtab[i]]),
-             "=m"(s->tmp_buf[s->revtab[i+1]])
-            :"m"(z[i])
-        );
-    }
-    memcpy(z, s->tmp_buf, n*sizeof(FFTComplex));
-}
-
-void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
-{
-    x86_reg j, k;
-    long n = s->mdct_size;
-    long n4 = n >> 2;
-
-    s->imdct_half(s, output + n4, input);
-
-    j = -n;
-    k = n-16;
-    __asm__ volatile(
-        "movaps "MANGLE(ff_m1m1m1m1)", %%xmm7 \n"
-        "1: \n"
-        "movaps       (%2,%1), %%xmm0 \n"
-        "movaps       (%3,%0), %%xmm1 \n"
-        "shufps $0x1b, %%xmm0, %%xmm0 \n"
-        "shufps $0x1b, %%xmm1, %%xmm1 \n"
-        "xorps         %%xmm7, %%xmm0 \n"
-        "movaps        %%xmm1, (%3,%1) \n"
-        "movaps        %%xmm0, (%2,%0) \n"
-        "sub $16, %1 \n"
-        "add $16, %0 \n"
-        "jl 1b \n"
-        :"+r"(j), "+r"(k)
-        :"r"(output+n4), "r"(output+n4*3)
-        XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm7")
-    );
-}