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ao_coreaudio: byteswap AC-3 streams on little-endian
[mplayer/greg.git] / libmpeg2 / vis.h
blob8324c3eb2e37abd7b18d5d0c08e41dd2317a8d70
1 /*
2 * vis.h
3 * Copyright (C) 2003 David S. Miller <davem@redhat.com>
4 *
5 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
6 * See http://libmpeg2.sourceforge.net/ for updates.
7 *
8 * mpeg2dec is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * mpeg2dec is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23 /* You may be asking why I hard-code the instruction opcodes and don't
24 * use the normal VIS assembler mnenomics for the VIS instructions.
25 *
26 * The reason is that Sun, in their infinite wisdom, decided that a binary
27 * using a VIS instruction will cause it to be marked (in the ELF headers)
28 * as doing so, and this prevents the OS from loading such binaries if the
29 * current cpu doesn't have VIS. There is no way to easily override this
30 * behavior of the assembler that I am aware of.
31 *
32 * This totally defeats what libmpeg2 is trying to do which is allow a
33 * single binary to be created, and then detect the availability of VIS
34 * at runtime.
35 *
36 * I'm not saying that tainting the binary by default is bad, rather I'm
37 * saying that not providing a way to override this easily unnecessarily
38 * ties people's hands.
39 *
40 * Thus, we do the opcode encoding by hand and output 32-bit words in
41 * the assembler to keep the binary from becoming tainted.
42 */
43
44 #ifndef LIBMPEG2_VIS_H
45 #define LIBMPEG2_VIS_H
46
47 #define vis_opc_base ((0x1 << 31) | (0x36 << 19))
48 #define vis_opf(X) ((X) << 5)
49 #define vis_sreg(X) (X)
50 #define vis_dreg(X) (((X)&0x1f)|((X)>>5))
51 #define vis_rs1_s(X) (vis_sreg(X) << 14)
52 #define vis_rs1_d(X) (vis_dreg(X) << 14)
53 #define vis_rs2_s(X) (vis_sreg(X) << 0)
54 #define vis_rs2_d(X) (vis_dreg(X) << 0)
55 #define vis_rd_s(X) (vis_sreg(X) << 25)
56 #define vis_rd_d(X) (vis_dreg(X) << 25)
57
58 #define vis_ss2s(opf,rs1,rs2,rd) \
59 __asm__ __volatile__ (".word %0" \
60 : : "i" (vis_opc_base | vis_opf(opf) | \
61 vis_rs1_s(rs1) | \
62 vis_rs2_s(rs2) | \
63 vis_rd_s(rd)))
64
65 #define vis_dd2d(opf,rs1,rs2,rd) \
66 __asm__ __volatile__ (".word %0" \
67 : : "i" (vis_opc_base | vis_opf(opf) | \
68 vis_rs1_d(rs1) | \
69 vis_rs2_d(rs2) | \
70 vis_rd_d(rd)))
71
72 #define vis_ss2d(opf,rs1,rs2,rd) \
73 __asm__ __volatile__ (".word %0" \
74 : : "i" (vis_opc_base | vis_opf(opf) | \
75 vis_rs1_s(rs1) | \
76 vis_rs2_s(rs2) | \
77 vis_rd_d(rd)))
78
79 #define vis_sd2d(opf,rs1,rs2,rd) \
80 __asm__ __volatile__ (".word %0" \
81 : : "i" (vis_opc_base | vis_opf(opf) | \
82 vis_rs1_s(rs1) | \
83 vis_rs2_d(rs2) | \
84 vis_rd_d(rd)))
85
86 #define vis_d2s(opf,rs2,rd) \
87 __asm__ __volatile__ (".word %0" \
88 : : "i" (vis_opc_base | vis_opf(opf) | \
89 vis_rs2_d(rs2) | \
90 vis_rd_s(rd)))
91
92 #define vis_s2d(opf,rs2,rd) \
93 __asm__ __volatile__ (".word %0" \
94 : : "i" (vis_opc_base | vis_opf(opf) | \
95 vis_rs2_s(rs2) | \
96 vis_rd_d(rd)))
97
98 #define vis_d12d(opf,rs1,rd) \
99 __asm__ __volatile__ (".word %0" \
100 : : "i" (vis_opc_base | vis_opf(opf) | \
101 vis_rs1_d(rs1) | \
102 vis_rd_d(rd)))
103
104 #define vis_d22d(opf,rs2,rd) \
105 __asm__ __volatile__ (".word %0" \
106 : : "i" (vis_opc_base | vis_opf(opf) | \
107 vis_rs2_d(rs2) | \
108 vis_rd_d(rd)))
109
110 #define vis_s12s(opf,rs1,rd) \
111 __asm__ __volatile__ (".word %0" \
112 : : "i" (vis_opc_base | vis_opf(opf) | \
113 vis_rs1_s(rs1) | \
114 vis_rd_s(rd)))
115
116 #define vis_s22s(opf,rs2,rd) \
117 __asm__ __volatile__ (".word %0" \
118 : : "i" (vis_opc_base | vis_opf(opf) | \
119 vis_rs2_s(rs2) | \
120 vis_rd_s(rd)))
121
122 #define vis_s(opf,rd) \
123 __asm__ __volatile__ (".word %0" \
124 : : "i" (vis_opc_base | vis_opf(opf) | \
125 vis_rd_s(rd)))
126
127 #define vis_d(opf,rd) \
128 __asm__ __volatile__ (".word %0" \
129 : : "i" (vis_opc_base | vis_opf(opf) | \
130 vis_rd_d(rd)))
131
132 #define vis_r2m(op,rd,mem) \
133 __asm__ __volatile__ (#op "\t%%f" #rd ", [%0]" : : "r" (&(mem)) )
134
135 #define vis_r2m_2(op,rd,mem1,mem2) \
136 __asm__ __volatile__ (#op "\t%%f" #rd ", [%0 + %1]" : : "r" (mem1), "r" (mem2) )
137
138 #define vis_m2r(op,mem,rd) \
139 __asm__ __volatile__ (#op "\t[%0], %%f" #rd : : "r" (&(mem)) )
140
141 #define vis_m2r_2(op,mem1,mem2,rd) \
142 __asm__ __volatile__ (#op "\t[%0 + %1], %%f" #rd : : "r" (mem1), "r" (mem2) )
143
144 static inline void vis_set_gsr(unsigned int _val)
145 {
146 register unsigned int val asm("g1");
147
148 val = _val;
149 __asm__ __volatile__(".word 0xa7804000"
150 : : "r" (val));
151 }
152
153 #define VIS_GSR_ALIGNADDR_MASK 0x0000007
154 #define VIS_GSR_ALIGNADDR_SHIFT 0
155 #define VIS_GSR_SCALEFACT_MASK 0x0000078
156 #define VIS_GSR_SCALEFACT_SHIFT 3
157
158 #define vis_ld32(mem,rs1) vis_m2r(ld, mem, rs1)
159 #define vis_ld32_2(mem1,mem2,rs1) vis_m2r_2(ld, mem1, mem2, rs1)
160 #define vis_st32(rs1,mem) vis_r2m(st, rs1, mem)
161 #define vis_st32_2(rs1,mem1,mem2) vis_r2m_2(st, rs1, mem1, mem2)
162 #define vis_ld64(mem,rs1) vis_m2r(ldd, mem, rs1)
163 #define vis_ld64_2(mem1,mem2,rs1) vis_m2r_2(ldd, mem1, mem2, rs1)
164 #define vis_st64(rs1,mem) vis_r2m(std, rs1, mem)
165 #define vis_st64_2(rs1,mem1,mem2) vis_r2m_2(std, rs1, mem1, mem2)
166
167 #define vis_ldblk(mem, rd) \
168 do { register void *__mem asm("g1"); \
169 __mem = &(mem); \
170 __asm__ __volatile__(".word 0xc1985e00 | %1" \
171 : \
172 : "r" (__mem), \
173 "i" (vis_rd_d(rd)) \
174 : "memory"); \
175 } while (0)
176
177 #define vis_stblk(rd, mem) \
178 do { register void *__mem asm("g1"); \
179 __mem = &(mem); \
180 __asm__ __volatile__(".word 0xc1b85e00 | %1" \
181 : \
182 : "r" (__mem), \
183 "i" (vis_rd_d(rd)) \
184 : "memory"); \
185 } while (0)
186
187 #define vis_membar_storestore() \
188 __asm__ __volatile__(".word 0x8143e008" : : : "memory")
189
190 #define vis_membar_sync() \
191 __asm__ __volatile__(".word 0x8143e040" : : : "memory")
192
193 /* 16 and 32 bit partitioned addition and subtraction. The normal
194 * versions perform 4 16-bit or 2 32-bit additions or subtractions.
195 * The 's' versions perform 2 16-bit or 2 32-bit additions or
196 * subtractions.
197 */
198
199 #define vis_padd16(rs1,rs2,rd) vis_dd2d(0x50, rs1, rs2, rd)
200 #define vis_padd16s(rs1,rs2,rd) vis_ss2s(0x51, rs1, rs2, rd)
201 #define vis_padd32(rs1,rs2,rd) vis_dd2d(0x52, rs1, rs2, rd)
202 #define vis_padd32s(rs1,rs2,rd) vis_ss2s(0x53, rs1, rs2, rd)
203 #define vis_psub16(rs1,rs2,rd) vis_dd2d(0x54, rs1, rs2, rd)
204 #define vis_psub16s(rs1,rs2,rd) vis_ss2s(0x55, rs1, rs2, rd)
205 #define vis_psub32(rs1,rs2,rd) vis_dd2d(0x56, rs1, rs2, rd)
206 #define vis_psub32s(rs1,rs2,rd) vis_ss2s(0x57, rs1, rs2, rd)
207
208 /* Pixel formatting instructions. */
209
210 #define vis_pack16(rs2,rd) vis_d2s( 0x3b, rs2, rd)
211 #define vis_pack32(rs1,rs2,rd) vis_dd2d(0x3a, rs1, rs2, rd)
212 #define vis_packfix(rs2,rd) vis_d2s( 0x3d, rs2, rd)
213 #define vis_expand(rs2,rd) vis_s2d( 0x4d, rs2, rd)
214 #define vis_pmerge(rs1,rs2,rd) vis_ss2d(0x4b, rs1, rs2, rd)
215
216 /* Partitioned multiply instructions. */
217
218 #define vis_mul8x16(rs1,rs2,rd) vis_sd2d(0x31, rs1, rs2, rd)
219 #define vis_mul8x16au(rs1,rs2,rd) vis_ss2d(0x33, rs1, rs2, rd)
220 #define vis_mul8x16al(rs1,rs2,rd) vis_ss2d(0x35, rs1, rs2, rd)
221 #define vis_mul8sux16(rs1,rs2,rd) vis_dd2d(0x36, rs1, rs2, rd)
222 #define vis_mul8ulx16(rs1,rs2,rd) vis_dd2d(0x37, rs1, rs2, rd)
223 #define vis_muld8sux16(rs1,rs2,rd) vis_ss2d(0x38, rs1, rs2, rd)
224 #define vis_muld8ulx16(rs1,rs2,rd) vis_ss2d(0x39, rs1, rs2, rd)
225
226 /* Alignment instructions. */
227
228 static inline void *vis_alignaddr(void *_ptr)
229 {
230 register void *ptr asm("g1");
231
232 ptr = _ptr;
233
234 __asm__ __volatile__(".word %2"
235 : "=&r" (ptr)
236 : "0" (ptr),
237 "i" (vis_opc_base | vis_opf(0x18) |
238 vis_rs1_s(1) |
239 vis_rs2_s(0) |
240 vis_rd_s(1)));
241
242 return ptr;
243 }
244
245 static inline void vis_alignaddr_g0(void *_ptr)
246 {
247 register void *ptr asm("g1");
248
249 ptr = _ptr;
250
251 __asm__ __volatile__(".word %2"
252 : "=&r" (ptr)
253 : "0" (ptr),
254 "i" (vis_opc_base | vis_opf(0x18) |
255 vis_rs1_s(1) |
256 vis_rs2_s(0) |
257 vis_rd_s(0)));
258 }
259
260 static inline void *vis_alignaddrl(void *_ptr)
261 {
262 register void *ptr asm("g1");
263
264 ptr = _ptr;
265
266 __asm__ __volatile__(".word %2"
267 : "=&r" (ptr)
268 : "0" (ptr),
269 "i" (vis_opc_base | vis_opf(0x19) |
270 vis_rs1_s(1) |
271 vis_rs2_s(0) |
272 vis_rd_s(1)));
273
274 return ptr;
275 }
276
277 static inline void vis_alignaddrl_g0(void *_ptr)
278 {
279 register void *ptr asm("g1");
280
281 ptr = _ptr;
282
283 __asm__ __volatile__(".word %2"
284 : "=&r" (ptr)
285 : "0" (ptr),
286 "i" (vis_opc_base | vis_opf(0x19) |
287 vis_rs1_s(1) |
288 vis_rs2_s(0) |
289 vis_rd_s(0)));
290 }
291
292 #define vis_faligndata(rs1,rs2,rd) vis_dd2d(0x48, rs1, rs2, rd)
293
294 /* Logical operate instructions. */
295
296 #define vis_fzero(rd) vis_d( 0x60, rd)
297 #define vis_fzeros(rd) vis_s( 0x61, rd)
298 #define vis_fone(rd) vis_d( 0x7e, rd)
299 #define vis_fones(rd) vis_s( 0x7f, rd)
300 #define vis_src1(rs1,rd) vis_d12d(0x74, rs1, rd)
301 #define vis_src1s(rs1,rd) vis_s12s(0x75, rs1, rd)
302 #define vis_src2(rs2,rd) vis_d22d(0x78, rs2, rd)
303 #define vis_src2s(rs2,rd) vis_s22s(0x79, rs2, rd)
304 #define vis_not1(rs1,rd) vis_d12d(0x6a, rs1, rd)
305 #define vis_not1s(rs1,rd) vis_s12s(0x6b, rs1, rd)
306 #define vis_not2(rs2,rd) vis_d22d(0x66, rs2, rd)
307 #define vis_not2s(rs2,rd) vis_s22s(0x67, rs2, rd)
308 #define vis_or(rs1,rs2,rd) vis_dd2d(0x7c, rs1, rs2, rd)
309 #define vis_ors(rs1,rs2,rd) vis_ss2s(0x7d, rs1, rs2, rd)
310 #define vis_nor(rs1,rs2,rd) vis_dd2d(0x62, rs1, rs2, rd)
311 #define vis_nors(rs1,rs2,rd) vis_ss2s(0x63, rs1, rs2, rd)
312 #define vis_and(rs1,rs2,rd) vis_dd2d(0x70, rs1, rs2, rd)
313 #define vis_ands(rs1,rs2,rd) vis_ss2s(0x71, rs1, rs2, rd)
314 #define vis_nand(rs1,rs2,rd) vis_dd2d(0x6e, rs1, rs2, rd)
315 #define vis_nands(rs1,rs2,rd) vis_ss2s(0x6f, rs1, rs2, rd)
316 #define vis_xor(rs1,rs2,rd) vis_dd2d(0x6c, rs1, rs2, rd)
317 #define vis_xors(rs1,rs2,rd) vis_ss2s(0x6d, rs1, rs2, rd)
318 #define vis_xnor(rs1,rs2,rd) vis_dd2d(0x72, rs1, rs2, rd)
319 #define vis_xnors(rs1,rs2,rd) vis_ss2s(0x73, rs1, rs2, rd)
320 #define vis_ornot1(rs1,rs2,rd) vis_dd2d(0x7a, rs1, rs2, rd)
321 #define vis_ornot1s(rs1,rs2,rd) vis_ss2s(0x7b, rs1, rs2, rd)
322 #define vis_ornot2(rs1,rs2,rd) vis_dd2d(0x76, rs1, rs2, rd)
323 #define vis_ornot2s(rs1,rs2,rd) vis_ss2s(0x77, rs1, rs2, rd)
324 #define vis_andnot1(rs1,rs2,rd) vis_dd2d(0x68, rs1, rs2, rd)
325 #define vis_andnot1s(rs1,rs2,rd) vis_ss2s(0x69, rs1, rs2, rd)
326 #define vis_andnot2(rs1,rs2,rd) vis_dd2d(0x64, rs1, rs2, rd)
327 #define vis_andnot2s(rs1,rs2,rd) vis_ss2s(0x65, rs1, rs2, rd)
328
329 /* Pixel component distance. */
330
331 #define vis_pdist(rs1,rs2,rd) vis_dd2d(0x3e, rs1, rs2, rd)
332
333 #endif /* LIBMPEG2_VIS_H */