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-rw-r--r--media/libjpeg/simd/i386/jfdctfst-sse2.asm403
1 files changed, 403 insertions, 0 deletions
diff --git a/media/libjpeg/simd/i386/jfdctfst-sse2.asm b/media/libjpeg/simd/i386/jfdctfst-sse2.asm
new file mode 100644
index 0000000000..446fa7a68f
--- /dev/null
+++ b/media/libjpeg/simd/i386/jfdctfst-sse2.asm
@@ -0,0 +1,403 @@
+;
+; jfdctfst.asm - fast integer FDCT (SSE2)
+;
+; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+; Copyright (C) 2016, D. R. Commander.
+;
+; 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 a fast, not so accurate integer implementation of
+; the forward DCT (Discrete Cosine Transform). The following code is
+; based directly on the IJG's original jfdctfst.c; see the jfdctfst.c
+; for more details.
+
+%include "jsimdext.inc"
+%include "jdct.inc"
+
+; --------------------------------------------------------------------------
+
+%define CONST_BITS 8 ; 14 is also OK.
+
+%if CONST_BITS == 8
+F_0_382 equ 98 ; FIX(0.382683433)
+F_0_541 equ 139 ; FIX(0.541196100)
+F_0_707 equ 181 ; FIX(0.707106781)
+F_1_306 equ 334 ; FIX(1.306562965)
+%else
+; NASM cannot do compile-time arithmetic on floating-point constants.
+%define DESCALE(x, n) (((x) + (1 << ((n) - 1))) >> (n))
+F_0_382 equ DESCALE( 410903207, 30 - CONST_BITS) ; FIX(0.382683433)
+F_0_541 equ DESCALE( 581104887, 30 - CONST_BITS) ; FIX(0.541196100)
+F_0_707 equ DESCALE( 759250124, 30 - CONST_BITS) ; FIX(0.707106781)
+F_1_306 equ DESCALE(1402911301, 30 - CONST_BITS) ; FIX(1.306562965)
+%endif
+
+; --------------------------------------------------------------------------
+ SECTION SEG_CONST
+
+; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow)
+; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw)
+
+%define PRE_MULTIPLY_SCALE_BITS 2
+%define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS)
+
+ alignz 32
+ GLOBAL_DATA(jconst_fdct_ifast_sse2)
+
+EXTN(jconst_fdct_ifast_sse2):
+
+PW_F0707 times 8 dw F_0_707 << CONST_SHIFT
+PW_F0382 times 8 dw F_0_382 << CONST_SHIFT
+PW_F0541 times 8 dw F_0_541 << CONST_SHIFT
+PW_F1306 times 8 dw F_1_306 << CONST_SHIFT
+
+ alignz 32
+
+; --------------------------------------------------------------------------
+ SECTION SEG_TEXT
+ BITS 32
+;
+; Perform the forward DCT on one block of samples.
+;
+; GLOBAL(void)
+; jsimd_fdct_ifast_sse2(DCTELEM *data)
+;
+
+%define data(b) (b) + 8 ; DCTELEM *data
+
+%define original_ebp ebp + 0
+%define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_XMMWORD
+ ; xmmword wk[WK_NUM]
+%define WK_NUM 2
+
+ align 32
+ GLOBAL_FUNCTION(jsimd_fdct_ifast_sse2)
+
+EXTN(jsimd_fdct_ifast_sse2):
+ push ebp
+ mov eax, esp ; eax = original ebp
+ sub esp, byte 4
+ and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
+ mov [esp], eax
+ mov ebp, esp ; ebp = aligned ebp
+ lea esp, [wk(0)]
+ pushpic ebx
+; push ecx ; unused
+; push edx ; need not be preserved
+; push esi ; unused
+; push edi ; unused
+
+ get_GOT ebx ; get GOT address
+
+ ; ---- Pass 1: process rows.
+
+ mov edx, POINTER [data(eax)] ; (DCTELEM *)
+
+ movdqa xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)]
+ movdqa xmm1, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)]
+ movdqa xmm2, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)]
+ movdqa xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)]
+
+ ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27)
+ ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37)
+
+ movdqa xmm4, xmm0 ; transpose coefficients(phase 1)
+ punpcklwd xmm0, xmm1 ; xmm0=(00 10 01 11 02 12 03 13)
+ punpckhwd xmm4, xmm1 ; xmm4=(04 14 05 15 06 16 07 17)
+ movdqa xmm5, xmm2 ; transpose coefficients(phase 1)
+ punpcklwd xmm2, xmm3 ; xmm2=(20 30 21 31 22 32 23 33)
+ punpckhwd xmm5, xmm3 ; xmm5=(24 34 25 35 26 36 27 37)
+
+ movdqa xmm6, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)]
+ movdqa xmm7, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)]
+ movdqa xmm1, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)]
+ movdqa xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)]
+
+ ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62)
+ ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63)
+
+ movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33)
+ movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37)
+
+ movdqa xmm2, xmm6 ; transpose coefficients(phase 1)
+ punpcklwd xmm6, xmm7 ; xmm6=(40 50 41 51 42 52 43 53)
+ punpckhwd xmm2, xmm7 ; xmm2=(44 54 45 55 46 56 47 57)
+ movdqa xmm5, xmm1 ; transpose coefficients(phase 1)
+ punpcklwd xmm1, xmm3 ; xmm1=(60 70 61 71 62 72 63 73)
+ punpckhwd xmm5, xmm3 ; xmm5=(64 74 65 75 66 76 67 77)
+
+ movdqa xmm7, xmm6 ; transpose coefficients(phase 2)
+ punpckldq xmm6, xmm1 ; xmm6=(40 50 60 70 41 51 61 71)
+ punpckhdq xmm7, xmm1 ; xmm7=(42 52 62 72 43 53 63 73)
+ movdqa xmm3, xmm2 ; transpose coefficients(phase 2)
+ punpckldq xmm2, xmm5 ; xmm2=(44 54 64 74 45 55 65 75)
+ punpckhdq xmm3, xmm5 ; xmm3=(46 56 66 76 47 57 67 77)
+
+ movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33)
+ movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37)
+ movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=(42 52 62 72 43 53 63 73)
+ movdqa XMMWORD [wk(1)], xmm2 ; wk(1)=(44 54 64 74 45 55 65 75)
+
+ movdqa xmm7, xmm0 ; transpose coefficients(phase 2)
+ punpckldq xmm0, xmm1 ; xmm0=(00 10 20 30 01 11 21 31)
+ punpckhdq xmm7, xmm1 ; xmm7=(02 12 22 32 03 13 23 33)
+ movdqa xmm2, xmm4 ; transpose coefficients(phase 2)
+ punpckldq xmm4, xmm5 ; xmm4=(04 14 24 34 05 15 25 35)
+ punpckhdq xmm2, xmm5 ; xmm2=(06 16 26 36 07 17 27 37)
+
+ movdqa xmm1, xmm0 ; transpose coefficients(phase 3)
+ punpcklqdq xmm0, xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0
+ punpckhqdq xmm1, xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1
+ movdqa xmm5, xmm2 ; transpose coefficients(phase 3)
+ punpcklqdq xmm2, xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6
+ punpckhqdq xmm5, xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7
+
+ movdqa xmm6, xmm1
+ movdqa xmm3, xmm0
+ psubw xmm1, xmm2 ; xmm1=data1-data6=tmp6
+ psubw xmm0, xmm5 ; xmm0=data0-data7=tmp7
+ paddw xmm6, xmm2 ; xmm6=data1+data6=tmp1
+ paddw xmm3, xmm5 ; xmm3=data0+data7=tmp0
+
+ movdqa xmm2, XMMWORD [wk(0)] ; xmm2=(42 52 62 72 43 53 63 73)
+ movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(44 54 64 74 45 55 65 75)
+ movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6
+ movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7
+
+ movdqa xmm1, xmm7 ; transpose coefficients(phase 3)
+ punpcklqdq xmm7, xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2
+ punpckhqdq xmm1, xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3
+ movdqa xmm0, xmm4 ; transpose coefficients(phase 3)
+ punpcklqdq xmm4, xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4
+ punpckhqdq xmm0, xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5
+
+ movdqa xmm2, xmm1
+ movdqa xmm5, xmm7
+ paddw xmm1, xmm4 ; xmm1=data3+data4=tmp3
+ paddw xmm7, xmm0 ; xmm7=data2+data5=tmp2
+ psubw xmm2, xmm4 ; xmm2=data3-data4=tmp4
+ psubw xmm5, xmm0 ; xmm5=data2-data5=tmp5
+
+ ; -- Even part
+
+ movdqa xmm4, xmm3
+ movdqa xmm0, xmm6
+ psubw xmm3, xmm1 ; xmm3=tmp13
+ psubw xmm6, xmm7 ; xmm6=tmp12
+ paddw xmm4, xmm1 ; xmm4=tmp10
+ paddw xmm0, xmm7 ; xmm0=tmp11
+
+ paddw xmm6, xmm3
+ psllw xmm6, PRE_MULTIPLY_SCALE_BITS
+ pmulhw xmm6, [GOTOFF(ebx,PW_F0707)] ; xmm6=z1
+
+ movdqa xmm1, xmm4
+ movdqa xmm7, xmm3
+ psubw xmm4, xmm0 ; xmm4=data4
+ psubw xmm3, xmm6 ; xmm3=data6
+ paddw xmm1, xmm0 ; xmm1=data0
+ paddw xmm7, xmm6 ; xmm7=data2
+
+ movdqa xmm0, XMMWORD [wk(0)] ; xmm0=tmp6
+ movdqa xmm6, XMMWORD [wk(1)] ; xmm6=tmp7
+ movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=data4
+ movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=data6
+
+ ; -- Odd part
+
+ paddw xmm2, xmm5 ; xmm2=tmp10
+ paddw xmm5, xmm0 ; xmm5=tmp11
+ paddw xmm0, xmm6 ; xmm0=tmp12, xmm6=tmp7
+
+ psllw xmm2, PRE_MULTIPLY_SCALE_BITS
+ psllw xmm0, PRE_MULTIPLY_SCALE_BITS
+
+ psllw xmm5, PRE_MULTIPLY_SCALE_BITS
+ pmulhw xmm5, [GOTOFF(ebx,PW_F0707)] ; xmm5=z3
+
+ movdqa xmm4, xmm2 ; xmm4=tmp10
+ psubw xmm2, xmm0
+ pmulhw xmm2, [GOTOFF(ebx,PW_F0382)] ; xmm2=z5
+ pmulhw xmm4, [GOTOFF(ebx,PW_F0541)] ; xmm4=MULTIPLY(tmp10,FIX_0_541196)
+ pmulhw xmm0, [GOTOFF(ebx,PW_F1306)] ; xmm0=MULTIPLY(tmp12,FIX_1_306562)
+ paddw xmm4, xmm2 ; xmm4=z2
+ paddw xmm0, xmm2 ; xmm0=z4
+
+ movdqa xmm3, xmm6
+ psubw xmm6, xmm5 ; xmm6=z13
+ paddw xmm3, xmm5 ; xmm3=z11
+
+ movdqa xmm2, xmm6
+ movdqa xmm5, xmm3
+ psubw xmm6, xmm4 ; xmm6=data3
+ psubw xmm3, xmm0 ; xmm3=data7
+ paddw xmm2, xmm4 ; xmm2=data5
+ paddw xmm5, xmm0 ; xmm5=data1
+
+ ; ---- Pass 2: process columns.
+
+; mov edx, POINTER [data(eax)] ; (DCTELEM *)
+
+ ; xmm1=(00 10 20 30 40 50 60 70), xmm7=(02 12 22 32 42 52 62 72)
+ ; xmm5=(01 11 21 31 41 51 61 71), xmm6=(03 13 23 33 43 53 63 73)
+
+ movdqa xmm4, xmm1 ; transpose coefficients(phase 1)
+ punpcklwd xmm1, xmm5 ; xmm1=(00 01 10 11 20 21 30 31)
+ punpckhwd xmm4, xmm5 ; xmm4=(40 41 50 51 60 61 70 71)
+ movdqa xmm0, xmm7 ; transpose coefficients(phase 1)
+ punpcklwd xmm7, xmm6 ; xmm7=(02 03 12 13 22 23 32 33)
+ punpckhwd xmm0, xmm6 ; xmm0=(42 43 52 53 62 63 72 73)
+
+ movdqa xmm5, XMMWORD [wk(0)] ; xmm5=col4
+ movdqa xmm6, XMMWORD [wk(1)] ; xmm6=col6
+
+ ; xmm5=(04 14 24 34 44 54 64 74), xmm6=(06 16 26 36 46 56 66 76)
+ ; xmm2=(05 15 25 35 45 55 65 75), xmm3=(07 17 27 37 47 57 67 77)
+
+ movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=(02 03 12 13 22 23 32 33)
+ movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(42 43 52 53 62 63 72 73)
+
+ movdqa xmm7, xmm5 ; transpose coefficients(phase 1)
+ punpcklwd xmm5, xmm2 ; xmm5=(04 05 14 15 24 25 34 35)
+ punpckhwd xmm7, xmm2 ; xmm7=(44 45 54 55 64 65 74 75)
+ movdqa xmm0, xmm6 ; transpose coefficients(phase 1)
+ punpcklwd xmm6, xmm3 ; xmm6=(06 07 16 17 26 27 36 37)
+ punpckhwd xmm0, xmm3 ; xmm0=(46 47 56 57 66 67 76 77)
+
+ movdqa xmm2, xmm5 ; transpose coefficients(phase 2)
+ punpckldq xmm5, xmm6 ; xmm5=(04 05 06 07 14 15 16 17)
+ punpckhdq xmm2, xmm6 ; xmm2=(24 25 26 27 34 35 36 37)
+ movdqa xmm3, xmm7 ; transpose coefficients(phase 2)
+ punpckldq xmm7, xmm0 ; xmm7=(44 45 46 47 54 55 56 57)
+ punpckhdq xmm3, xmm0 ; xmm3=(64 65 66 67 74 75 76 77)
+
+ movdqa xmm6, XMMWORD [wk(0)] ; xmm6=(02 03 12 13 22 23 32 33)
+ movdqa xmm0, XMMWORD [wk(1)] ; xmm0=(42 43 52 53 62 63 72 73)
+ movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(24 25 26 27 34 35 36 37)
+ movdqa XMMWORD [wk(1)], xmm7 ; wk(1)=(44 45 46 47 54 55 56 57)
+
+ movdqa xmm2, xmm1 ; transpose coefficients(phase 2)
+ punpckldq xmm1, xmm6 ; xmm1=(00 01 02 03 10 11 12 13)
+ punpckhdq xmm2, xmm6 ; xmm2=(20 21 22 23 30 31 32 33)
+ movdqa xmm7, xmm4 ; transpose coefficients(phase 2)
+ punpckldq xmm4, xmm0 ; xmm4=(40 41 42 43 50 51 52 53)
+ punpckhdq xmm7, xmm0 ; xmm7=(60 61 62 63 70 71 72 73)
+
+ movdqa xmm6, xmm1 ; transpose coefficients(phase 3)
+ punpcklqdq xmm1, xmm5 ; xmm1=(00 01 02 03 04 05 06 07)=data0
+ punpckhqdq xmm6, xmm5 ; xmm6=(10 11 12 13 14 15 16 17)=data1
+ movdqa xmm0, xmm7 ; transpose coefficients(phase 3)
+ punpcklqdq xmm7, xmm3 ; xmm7=(60 61 62 63 64 65 66 67)=data6
+ punpckhqdq xmm0, xmm3 ; xmm0=(70 71 72 73 74 75 76 77)=data7
+
+ movdqa xmm5, xmm6
+ movdqa xmm3, xmm1
+ psubw xmm6, xmm7 ; xmm6=data1-data6=tmp6
+ psubw xmm1, xmm0 ; xmm1=data0-data7=tmp7
+ paddw xmm5, xmm7 ; xmm5=data1+data6=tmp1
+ paddw xmm3, xmm0 ; xmm3=data0+data7=tmp0
+
+ movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(24 25 26 27 34 35 36 37)
+ movdqa xmm0, XMMWORD [wk(1)] ; xmm0=(44 45 46 47 54 55 56 57)
+ movdqa XMMWORD [wk(0)], xmm6 ; wk(0)=tmp6
+ movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=tmp7
+
+ movdqa xmm6, xmm2 ; transpose coefficients(phase 3)
+ punpcklqdq xmm2, xmm7 ; xmm2=(20 21 22 23 24 25 26 27)=data2
+ punpckhqdq xmm6, xmm7 ; xmm6=(30 31 32 33 34 35 36 37)=data3
+ movdqa xmm1, xmm4 ; transpose coefficients(phase 3)
+ punpcklqdq xmm4, xmm0 ; xmm4=(40 41 42 43 44 45 46 47)=data4
+ punpckhqdq xmm1, xmm0 ; xmm1=(50 51 52 53 54 55 56 57)=data5
+
+ movdqa xmm7, xmm6
+ movdqa xmm0, xmm2
+ paddw xmm6, xmm4 ; xmm6=data3+data4=tmp3
+ paddw xmm2, xmm1 ; xmm2=data2+data5=tmp2
+ psubw xmm7, xmm4 ; xmm7=data3-data4=tmp4
+ psubw xmm0, xmm1 ; xmm0=data2-data5=tmp5
+
+ ; -- Even part
+
+ movdqa xmm4, xmm3
+ movdqa xmm1, xmm5
+ psubw xmm3, xmm6 ; xmm3=tmp13
+ psubw xmm5, xmm2 ; xmm5=tmp12
+ paddw xmm4, xmm6 ; xmm4=tmp10
+ paddw xmm1, xmm2 ; xmm1=tmp11
+
+ paddw xmm5, xmm3
+ psllw xmm5, PRE_MULTIPLY_SCALE_BITS
+ pmulhw xmm5, [GOTOFF(ebx,PW_F0707)] ; xmm5=z1
+
+ movdqa xmm6, xmm4
+ movdqa xmm2, xmm3
+ psubw xmm4, xmm1 ; xmm4=data4
+ psubw xmm3, xmm5 ; xmm3=data6
+ paddw xmm6, xmm1 ; xmm6=data0
+ paddw xmm2, xmm5 ; xmm2=data2
+
+ movdqa XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)], xmm4
+ movdqa XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)], xmm3
+ movdqa XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)], xmm6
+ movdqa XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)], xmm2
+
+ ; -- Odd part
+
+ movdqa xmm1, XMMWORD [wk(0)] ; xmm1=tmp6
+ movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7
+
+ paddw xmm7, xmm0 ; xmm7=tmp10
+ paddw xmm0, xmm1 ; xmm0=tmp11
+ paddw xmm1, xmm5 ; xmm1=tmp12, xmm5=tmp7
+
+ psllw xmm7, PRE_MULTIPLY_SCALE_BITS
+ psllw xmm1, PRE_MULTIPLY_SCALE_BITS
+
+ psllw xmm0, PRE_MULTIPLY_SCALE_BITS
+ pmulhw xmm0, [GOTOFF(ebx,PW_F0707)] ; xmm0=z3
+
+ movdqa xmm4, xmm7 ; xmm4=tmp10
+ psubw xmm7, xmm1
+ pmulhw xmm7, [GOTOFF(ebx,PW_F0382)] ; xmm7=z5
+ pmulhw xmm4, [GOTOFF(ebx,PW_F0541)] ; xmm4=MULTIPLY(tmp10,FIX_0_541196)
+ pmulhw xmm1, [GOTOFF(ebx,PW_F1306)] ; xmm1=MULTIPLY(tmp12,FIX_1_306562)
+ paddw xmm4, xmm7 ; xmm4=z2
+ paddw xmm1, xmm7 ; xmm1=z4
+
+ movdqa xmm3, xmm5
+ psubw xmm5, xmm0 ; xmm5=z13
+ paddw xmm3, xmm0 ; xmm3=z11
+
+ movdqa xmm6, xmm5
+ movdqa xmm2, xmm3
+ psubw xmm5, xmm4 ; xmm5=data3
+ psubw xmm3, xmm1 ; xmm3=data7
+ paddw xmm6, xmm4 ; xmm6=data5
+ paddw xmm2, xmm1 ; xmm2=data1
+
+ movdqa XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)], xmm5
+ movdqa XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)], xmm3
+ movdqa XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)], xmm6
+ movdqa XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)], xmm2
+
+; pop edi ; unused
+; pop esi ; unused
+; pop edx ; need not be preserved
+; pop ecx ; unused
+ poppic ebx
+ mov esp, ebp ; esp <- aligned ebp
+ pop esp ; esp <- original ebp
+ pop ebp
+ ret
+
+; For some reason, the OS X linker does not honor the request to align the
+; segment unless we do this.
+ align 32
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 03:14:24 +0000