media/libvpx/vp8/common/x86/dequantize_mmx.asm@ac0c01689b40
media/libvpx/vp8/common/x86/dequantize_mmx.asm
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 ;
2 ; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 ;
4 ; Use of this source code is governed by a BSD-style license
5 ; that can be found in the LICENSE file in the root of the source
6 ; tree. An additional intellectual property rights grant can be found
7 ; in the file PATENTS. All contributing project authors may
8 ; be found in the AUTHORS file in the root of the source tree.
9 ;
12 %include "vpx_ports/x86_abi_support.asm"
15 ;void vp8_dequantize_b_impl_mmx(short *sq, short *dq, short *q)
16 global sym(vp8_dequantize_b_impl_mmx) PRIVATE
17 sym(vp8_dequantize_b_impl_mmx):
18 push rbp
19 mov rbp, rsp
20 SHADOW_ARGS_TO_STACK 3
21 push rsi
22 push rdi
23 ; end prolog
25 mov rsi, arg(0) ;sq
26 mov rdi, arg(1) ;dq
27 mov rax, arg(2) ;q
29 movq mm1, [rsi]
30 pmullw mm1, [rax+0] ; mm4 *= kernel 0 modifiers.
31 movq [rdi], mm1
33 movq mm1, [rsi+8]
34 pmullw mm1, [rax+8] ; mm4 *= kernel 0 modifiers.
35 movq [rdi+8], mm1
37 movq mm1, [rsi+16]
38 pmullw mm1, [rax+16] ; mm4 *= kernel 0 modifiers.
39 movq [rdi+16], mm1
41 movq mm1, [rsi+24]
42 pmullw mm1, [rax+24] ; mm4 *= kernel 0 modifiers.
43 movq [rdi+24], mm1
45 ; begin epilog
46 pop rdi
47 pop rsi
48 UNSHADOW_ARGS
49 pop rbp
50 ret
53 ;void dequant_idct_add_mmx(
54 ;short *input, 0
55 ;short *dq, 1
56 ;unsigned char *dest, 2
57 ;int stride) 3
58 global sym(vp8_dequant_idct_add_mmx) PRIVATE
59 sym(vp8_dequant_idct_add_mmx):
60 push rbp
61 mov rbp, rsp
62 SHADOW_ARGS_TO_STACK 4
63 GET_GOT rbx
64 push rdi
65 ; end prolog
67 mov rax, arg(0) ;input
68 mov rdx, arg(1) ;dq
71 movq mm0, [rax ]
72 pmullw mm0, [rdx]
74 movq mm1, [rax +8]
75 pmullw mm1, [rdx +8]
77 movq mm2, [rax+16]
78 pmullw mm2, [rdx+16]
80 movq mm3, [rax+24]
81 pmullw mm3, [rdx+24]
83 mov rdx, arg(2) ;dest
85 pxor mm7, mm7
88 movq [rax], mm7
89 movq [rax+8], mm7
91 movq [rax+16],mm7
92 movq [rax+24],mm7
95 movsxd rdi, dword ptr arg(3) ;stride
97 psubw mm0, mm2 ; b1= 0-2
98 paddw mm2, mm2 ;
100 movq mm5, mm1
101 paddw mm2, mm0 ; a1 =0+2
103 pmulhw mm5, [GLOBAL(x_s1sqr2)];
104 paddw mm5, mm1 ; ip1 * sin(pi/8) * sqrt(2)
106 movq mm7, mm3 ;
107 pmulhw mm7, [GLOBAL(x_c1sqr2less1)];
109 paddw mm7, mm3 ; ip3 * cos(pi/8) * sqrt(2)
110 psubw mm7, mm5 ; c1
112 movq mm5, mm1
113 movq mm4, mm3
115 pmulhw mm5, [GLOBAL(x_c1sqr2less1)]
116 paddw mm5, mm1
118 pmulhw mm3, [GLOBAL(x_s1sqr2)]
119 paddw mm3, mm4
121 paddw mm3, mm5 ; d1
122 movq mm6, mm2 ; a1
124 movq mm4, mm0 ; b1
125 paddw mm2, mm3 ;0
127 paddw mm4, mm7 ;1
128 psubw mm0, mm7 ;2
130 psubw mm6, mm3 ;3
132 movq mm1, mm2 ; 03 02 01 00
133 movq mm3, mm4 ; 23 22 21 20
135 punpcklwd mm1, mm0 ; 11 01 10 00
136 punpckhwd mm2, mm0 ; 13 03 12 02
138 punpcklwd mm3, mm6 ; 31 21 30 20
139 punpckhwd mm4, mm6 ; 33 23 32 22
141 movq mm0, mm1 ; 11 01 10 00
142 movq mm5, mm2 ; 13 03 12 02
144 punpckldq mm0, mm3 ; 30 20 10 00
145 punpckhdq mm1, mm3 ; 31 21 11 01
147 punpckldq mm2, mm4 ; 32 22 12 02
148 punpckhdq mm5, mm4 ; 33 23 13 03
150 movq mm3, mm5 ; 33 23 13 03
152 psubw mm0, mm2 ; b1= 0-2
153 paddw mm2, mm2 ;
155 movq mm5, mm1
156 paddw mm2, mm0 ; a1 =0+2
158 pmulhw mm5, [GLOBAL(x_s1sqr2)];
159 paddw mm5, mm1 ; ip1 * sin(pi/8) * sqrt(2)
161 movq mm7, mm3 ;
162 pmulhw mm7, [GLOBAL(x_c1sqr2less1)];
164 paddw mm7, mm3 ; ip3 * cos(pi/8) * sqrt(2)
165 psubw mm7, mm5 ; c1
167 movq mm5, mm1
168 movq mm4, mm3
170 pmulhw mm5, [GLOBAL(x_c1sqr2less1)]
171 paddw mm5, mm1
173 pmulhw mm3, [GLOBAL(x_s1sqr2)]
174 paddw mm3, mm4
176 paddw mm3, mm5 ; d1
177 paddw mm0, [GLOBAL(fours)]
179 paddw mm2, [GLOBAL(fours)]
180 movq mm6, mm2 ; a1
182 movq mm4, mm0 ; b1
183 paddw mm2, mm3 ;0
185 paddw mm4, mm7 ;1
186 psubw mm0, mm7 ;2
188 psubw mm6, mm3 ;3
189 psraw mm2, 3
191 psraw mm0, 3
192 psraw mm4, 3
194 psraw mm6, 3
196 movq mm1, mm2 ; 03 02 01 00
197 movq mm3, mm4 ; 23 22 21 20
199 punpcklwd mm1, mm0 ; 11 01 10 00
200 punpckhwd mm2, mm0 ; 13 03 12 02
202 punpcklwd mm3, mm6 ; 31 21 30 20
203 punpckhwd mm4, mm6 ; 33 23 32 22
205 movq mm0, mm1 ; 11 01 10 00
206 movq mm5, mm2 ; 13 03 12 02
208 punpckldq mm0, mm3 ; 30 20 10 00
209 punpckhdq mm1, mm3 ; 31 21 11 01
211 punpckldq mm2, mm4 ; 32 22 12 02
212 punpckhdq mm5, mm4 ; 33 23 13 03
214 pxor mm7, mm7
216 movd mm4, [rdx]
217 punpcklbw mm4, mm7
218 paddsw mm0, mm4
219 packuswb mm0, mm7
220 movd [rdx], mm0
222 movd mm4, [rdx+rdi]
223 punpcklbw mm4, mm7
224 paddsw mm1, mm4
225 packuswb mm1, mm7
226 movd [rdx+rdi], mm1
228 movd mm4, [rdx+2*rdi]
229 punpcklbw mm4, mm7
230 paddsw mm2, mm4
231 packuswb mm2, mm7
232 movd [rdx+rdi*2], mm2
234 add rdx, rdi
236 movd mm4, [rdx+2*rdi]
237 punpcklbw mm4, mm7
238 paddsw mm5, mm4
239 packuswb mm5, mm7
240 movd [rdx+rdi*2], mm5
242 ; begin epilog
243 pop rdi
244 RESTORE_GOT
245 UNSHADOW_ARGS
246 pop rbp
247 ret
249 SECTION_RODATA
250 align 16
251 x_s1sqr2:
252 times 4 dw 0x8A8C
253 align 16
254 x_c1sqr2less1:
255 times 4 dw 0x4E7B
256 align 16
257 fours:
258 times 4 dw 0x0004
