Revert "x86: fft: convert sse inline asm to yasm"

This reverts commit 82992604706144910f4a2f875d48cfc66c1b70d7.

It breaks shared builds on x86_64.

3 files changed, 121 insertions, 129 deletions

diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index 8acbd0774c..f633cf63e9 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -43,6 +43,7 @@ YASM-OBJS-$(CONFIG_DIRAC_DECODER)      += x86/diracdsp_mmx.o x86/diracdsp_yasm.o
 YASM-OBJS-$(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)
 
diff --git a/libavcodec/x86/fft_mmx.asm b/libavcodec/x86/fft_mmx.asm
index 7d046df18e..e1b485b697 100644
--- a/libavcodec/x86/fft_mmx.asm
+++ b/libavcodec/x86/fft_mmx.asm
@@ -47,10 +47,6 @@ struc FFTContext
     .mdctbits: resd 1
     .tcos:     pointer 1
     .tsin:     pointer 1
-    .fftperm:  pointer 1
-    .fftcalc:  pointer 1
-    .imdctcalc:pointer 1
-    .imdcthalf:pointer 1
 endstruc
 
 %define M_SQRT1_2 0.70710678118654752440
@@ -69,7 +65,6 @@ 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
@@ -538,16 +533,6 @@ 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
@@ -564,14 +549,6 @@ 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
@@ -589,112 +566,6 @@ 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
@@ -712,6 +583,16 @@ 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
diff --git a/libavcodec/x86/fft_sse.c b/libavcodec/x86/fft_sse.c
new file mode 100644
index 0000000000..13b992f47a
--- /dev/null
+++ b/libavcodec/x86/fft_sse.c
@@ -0,0 +1,110 @@
+/*
+ * 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")
+    );
+}