22c292672fde167fe07b80f392f646d4eb5998d1
[libav.git] / libavcodec / sparc / vis.h
1 /*
2 * vis.h
3 * Copyright (C) 2003 David S. Miller <davem@redhat.com>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /* You may be asking why I hard-code the instruction opcodes and don't
23 * use the normal VIS assembler mnenomics for the VIS instructions.
24 *
25 * The reason is that Sun, in their infinite wisdom, decided that a binary
26 * using a VIS instruction will cause it to be marked (in the ELF headers)
27 * as doing so, and this prevents the OS from loading such binaries if the
28 * current cpu doesn't have VIS. There is no way to easily override this
29 * behavior of the assembler that I am aware of.
30 *
31 * This totally defeats what libmpeg2 is trying to do which is allow a
32 * single binary to be created, and then detect the availability of VIS
33 * at runtime.
34 *
35 * I'm not saying that tainting the binary by default is bad, rather I'm
36 * saying that not providing a way to override this easily unnecessarily
37 * ties people's hands.
38 *
39 * Thus, we do the opcode encoding by hand and output 32-bit words in
40 * the assembler to keep the binary from becoming tainted.
41 */
42
43 #ifndef AVCODEC_VIS_H
44 #define AVCODEC_VIS_H
45
46 #define vis_opc_base ((0x1 << 31) | (0x36 << 19))
47 #define vis_opf(X) ((X) << 5)
48 #define vis_sreg(X) (X)
49 #define vis_dreg(X) (((X)&0x1f)|((X)>>5))
50 #define vis_rs1_s(X) (vis_sreg(X) << 14)
51 #define vis_rs1_d(X) (vis_dreg(X) << 14)
52 #define vis_rs2_s(X) (vis_sreg(X) << 0)
53 #define vis_rs2_d(X) (vis_dreg(X) << 0)
54 #define vis_rd_s(X) (vis_sreg(X) << 25)
55 #define vis_rd_d(X) (vis_dreg(X) << 25)
56
57 #define vis_ss2s(opf,rs1,rs2,rd) \
58 __asm__ __volatile__ (".word %0" \
59 : : "i" (vis_opc_base | vis_opf(opf) | \
60 vis_rs1_s(rs1) | \
61 vis_rs2_s(rs2) | \
62 vis_rd_s(rd)))
63
64 #define vis_dd2d(opf,rs1,rs2,rd) \
65 __asm__ __volatile__ (".word %0" \
66 : : "i" (vis_opc_base | vis_opf(opf) | \
67 vis_rs1_d(rs1) | \
68 vis_rs2_d(rs2) | \
69 vis_rd_d(rd)))
70
71 #define vis_ss2d(opf,rs1,rs2,rd) \
72 __asm__ __volatile__ (".word %0" \
73 : : "i" (vis_opc_base | vis_opf(opf) | \
74 vis_rs1_s(rs1) | \
75 vis_rs2_s(rs2) | \
76 vis_rd_d(rd)))
77
78 #define vis_sd2d(opf,rs1,rs2,rd) \
79 __asm__ __volatile__ (".word %0" \
80 : : "i" (vis_opc_base | vis_opf(opf) | \
81 vis_rs1_s(rs1) | \
82 vis_rs2_d(rs2) | \
83 vis_rd_d(rd)))
84
85 #define vis_d2s(opf,rs2,rd) \
86 __asm__ __volatile__ (".word %0" \
87 : : "i" (vis_opc_base | vis_opf(opf) | \
88 vis_rs2_d(rs2) | \
89 vis_rd_s(rd)))
90
91 #define vis_s2d(opf,rs2,rd) \
92 __asm__ __volatile__ (".word %0" \
93 : : "i" (vis_opc_base | vis_opf(opf) | \
94 vis_rs2_s(rs2) | \
95 vis_rd_d(rd)))
96
97 #define vis_d12d(opf,rs1,rd) \
98 __asm__ __volatile__ (".word %0" \
99 : : "i" (vis_opc_base | vis_opf(opf) | \
100 vis_rs1_d(rs1) | \
101 vis_rd_d(rd)))
102
103 #define vis_d22d(opf,rs2,rd) \
104 __asm__ __volatile__ (".word %0" \
105 : : "i" (vis_opc_base | vis_opf(opf) | \
106 vis_rs2_d(rs2) | \
107 vis_rd_d(rd)))
108
109 #define vis_s12s(opf,rs1,rd) \
110 __asm__ __volatile__ (".word %0" \
111 : : "i" (vis_opc_base | vis_opf(opf) | \
112 vis_rs1_s(rs1) | \
113 vis_rd_s(rd)))
114
115 #define vis_s22s(opf,rs2,rd) \
116 __asm__ __volatile__ (".word %0" \
117 : : "i" (vis_opc_base | vis_opf(opf) | \
118 vis_rs2_s(rs2) | \
119 vis_rd_s(rd)))
120
121 #define vis_s(opf,rd) \
122 __asm__ __volatile__ (".word %0" \
123 : : "i" (vis_opc_base | vis_opf(opf) | \
124 vis_rd_s(rd)))
125
126 #define vis_d(opf,rd) \
127 __asm__ __volatile__ (".word %0" \
128 : : "i" (vis_opc_base | vis_opf(opf) | \
129 vis_rd_d(rd)))
130
131 #define vis_r2m(op,rd,mem) \
132 __asm__ __volatile__ (#op "\t%%f" #rd ", [%0]" : : "r" (&(mem)) )
133
134 #define vis_r2m_2(op,rd,mem1,mem2) \
135 __asm__ __volatile__ (#op "\t%%f" #rd ", [%0 + %1]" : : "r" (mem1), "r" (mem2) )
136
137 #define vis_m2r(op,mem,rd) \
138 __asm__ __volatile__ (#op "\t[%0], %%f" #rd : : "r" (&(mem)) )
139
140 #define vis_m2r_2(op,mem1,mem2,rd) \
141 __asm__ __volatile__ (#op "\t[%0 + %1], %%f" #rd : : "r" (mem1), "r" (mem2) )
142
143 static inline void vis_set_gsr(unsigned int _val)
144 {
145 register unsigned int val asm("g1");
146
147 val = _val;
148 __asm__ __volatile__(".word 0xa7804000"
149 : : "r" (val));
150 }
151
152 #define VIS_GSR_ALIGNADDR_MASK 0x0000007
153 #define VIS_GSR_ALIGNADDR_SHIFT 0
154 #define VIS_GSR_SCALEFACT_MASK 0x0000078
155 #define VIS_GSR_SCALEFACT_SHIFT 3
156
157 #define vis_ld32(mem,rs1) vis_m2r(ld, mem, rs1)
158 #define vis_ld32_2(mem1,mem2,rs1) vis_m2r_2(ld, mem1, mem2, rs1)
159 #define vis_st32(rs1,mem) vis_r2m(st, rs1, mem)
160 #define vis_st32_2(rs1,mem1,mem2) vis_r2m_2(st, rs1, mem1, mem2)
161 #define vis_ld64(mem,rs1) vis_m2r(ldd, mem, rs1)
162 #define vis_ld64_2(mem1,mem2,rs1) vis_m2r_2(ldd, mem1, mem2, rs1)
163 #define vis_st64(rs1,mem) vis_r2m(std, rs1, mem)
164 #define vis_st64_2(rs1,mem1,mem2) vis_r2m_2(std, rs1, mem1, mem2)
165
166 #define vis_ldblk(mem, rd) \
167 do { register void *__mem asm("g1"); \
168 __mem = &(mem); \
169 __asm__ __volatile__(".word 0xc1985e00 | %1" \
170 : \
171 : "r" (__mem), \
172 "i" (vis_rd_d(rd)) \
173 : "memory"); \
174 } while (0)
175
176 #define vis_stblk(rd, mem) \
177 do { register void *__mem asm("g1"); \
178 __mem = &(mem); \
179 __asm__ __volatile__(".word 0xc1b85e00 | %1" \
180 : \
181 : "r" (__mem), \
182 "i" (vis_rd_d(rd)) \
183 : "memory"); \
184 } while (0)
185
186 #define vis_membar_storestore() \
187 __asm__ __volatile__(".word 0x8143e008" : : : "memory")
188
189 #define vis_membar_sync() \
190 __asm__ __volatile__(".word 0x8143e040" : : : "memory")
191
192 /* 16 and 32 bit partitioned addition and subtraction. The normal
193 * versions perform 4 16-bit or 2 32-bit additions or subtractions.
194 * The 's' versions perform 2 16-bit or 1 32-bit additions or
195 * subtractions.
196 */
197
198 #define vis_padd16(rs1,rs2,rd) vis_dd2d(0x50, rs1, rs2, rd)
199 #define vis_padd16s(rs1,rs2,rd) vis_ss2s(0x51, rs1, rs2, rd)
200 #define vis_padd32(rs1,rs2,rd) vis_dd2d(0x52, rs1, rs2, rd)
201 #define vis_padd32s(rs1,rs2,rd) vis_ss2s(0x53, rs1, rs2, rd)
202 #define vis_psub16(rs1,rs2,rd) vis_dd2d(0x54, rs1, rs2, rd)
203 #define vis_psub16s(rs1,rs2,rd) vis_ss2s(0x55, rs1, rs2, rd)
204 #define vis_psub32(rs1,rs2,rd) vis_dd2d(0x56, rs1, rs2, rd)
205 #define vis_psub32s(rs1,rs2,rd) vis_ss2s(0x57, rs1, rs2, rd)
206
207 /* Pixel formatting instructions. */
208
209 #define vis_pack16(rs2,rd) vis_d2s( 0x3b, rs2, rd)
210 #define vis_pack32(rs1,rs2,rd) vis_dd2d(0x3a, rs1, rs2, rd)
211 #define vis_packfix(rs2,rd) vis_d2s( 0x3d, rs2, rd)
212 #define vis_expand(rs2,rd) vis_s2d( 0x4d, rs2, rd)
213 #define vis_pmerge(rs1,rs2,rd) vis_ss2d(0x4b, rs1, rs2, rd)
214
215 /* Partitioned multiply instructions. */
216
217 #define vis_mul8x16(rs1,rs2,rd) vis_sd2d(0x31, rs1, rs2, rd)
218 #define vis_mul8x16au(rs1,rs2,rd) vis_ss2d(0x33, rs1, rs2, rd)
219 #define vis_mul8x16al(rs1,rs2,rd) vis_ss2d(0x35, rs1, rs2, rd)
220 #define vis_mul8sux16(rs1,rs2,rd) vis_dd2d(0x36, rs1, rs2, rd)
221 #define vis_mul8ulx16(rs1,rs2,rd) vis_dd2d(0x37, rs1, rs2, rd)
222 #define vis_muld8sux16(rs1,rs2,rd) vis_ss2d(0x38, rs1, rs2, rd)
223 #define vis_muld8ulx16(rs1,rs2,rd) vis_ss2d(0x39, rs1, rs2, rd)
224
225 /* Alignment instructions. */
226
227 static inline void *vis_alignaddr(void *_ptr)
228 {
229 register void *ptr asm("g1");
230
231 ptr = _ptr;
232
233 __asm__ __volatile__(".word %2"
234 : "=&r" (ptr)
235 : "0" (ptr),
236 "i" (vis_opc_base | vis_opf(0x18) |
237 vis_rs1_s(1) |
238 vis_rs2_s(0) |
239 vis_rd_s(1)));
240
241 return ptr;
242 }
243
244 static inline void vis_alignaddr_g0(void *_ptr)
245 {
246 register void *ptr asm("g1");
247
248 ptr = _ptr;
249
250 __asm__ __volatile__(".word %2"
251 : "=&r" (ptr)
252 : "0" (ptr),
253 "i" (vis_opc_base | vis_opf(0x18) |
254 vis_rs1_s(1) |
255 vis_rs2_s(0) |
256 vis_rd_s(0)));
257 }
258
259 static inline void *vis_alignaddrl(void *_ptr)
260 {
261 register void *ptr asm("g1");
262
263 ptr = _ptr;
264
265 __asm__ __volatile__(".word %2"
266 : "=&r" (ptr)
267 : "0" (ptr),
268 "i" (vis_opc_base | vis_opf(0x19) |
269 vis_rs1_s(1) |
270 vis_rs2_s(0) |
271 vis_rd_s(1)));
272
273 return ptr;
274 }
275
276 static inline void vis_alignaddrl_g0(void *_ptr)
277 {
278 register void *ptr asm("g1");
279
280 ptr = _ptr;
281
282 __asm__ __volatile__(".word %2"
283 : "=&r" (ptr)
284 : "0" (ptr),
285 "i" (vis_opc_base | vis_opf(0x19) |
286 vis_rs1_s(1) |
287 vis_rs2_s(0) |
288 vis_rd_s(0)));
289 }
290
291 #define vis_faligndata(rs1,rs2,rd) vis_dd2d(0x48, rs1, rs2, rd)
292
293 /* Logical operate instructions. */
294
295 #define vis_fzero(rd) vis_d( 0x60, rd)
296 #define vis_fzeros(rd) vis_s( 0x61, rd)
297 #define vis_fone(rd) vis_d( 0x7e, rd)
298 #define vis_fones(rd) vis_s( 0x7f, rd)
299 #define vis_src1(rs1,rd) vis_d12d(0x74, rs1, rd)
300 #define vis_src1s(rs1,rd) vis_s12s(0x75, rs1, rd)
301 #define vis_src2(rs2,rd) vis_d22d(0x78, rs2, rd)
302 #define vis_src2s(rs2,rd) vis_s22s(0x79, rs2, rd)
303 #define vis_not1(rs1,rd) vis_d12d(0x6a, rs1, rd)
304 #define vis_not1s(rs1,rd) vis_s12s(0x6b, rs1, rd)
305 #define vis_not2(rs2,rd) vis_d22d(0x66, rs2, rd)
306 #define vis_not2s(rs2,rd) vis_s22s(0x67, rs2, rd)
307 #define vis_or(rs1,rs2,rd) vis_dd2d(0x7c, rs1, rs2, rd)
308 #define vis_ors(rs1,rs2,rd) vis_ss2s(0x7d, rs1, rs2, rd)
309 #define vis_nor(rs1,rs2,rd) vis_dd2d(0x62, rs1, rs2, rd)
310 #define vis_nors(rs1,rs2,rd) vis_ss2s(0x63, rs1, rs2, rd)
311 #define vis_and(rs1,rs2,rd) vis_dd2d(0x70, rs1, rs2, rd)
312 #define vis_ands(rs1,rs2,rd) vis_ss2s(0x71, rs1, rs2, rd)
313 #define vis_nand(rs1,rs2,rd) vis_dd2d(0x6e, rs1, rs2, rd)
314 #define vis_nands(rs1,rs2,rd) vis_ss2s(0x6f, rs1, rs2, rd)
315 #define vis_xor(rs1,rs2,rd) vis_dd2d(0x6c, rs1, rs2, rd)
316 #define vis_xors(rs1,rs2,rd) vis_ss2s(0x6d, rs1, rs2, rd)
317 #define vis_xnor(rs1,rs2,rd) vis_dd2d(0x72, rs1, rs2, rd)
318 #define vis_xnors(rs1,rs2,rd) vis_ss2s(0x73, rs1, rs2, rd)
319 #define vis_ornot1(rs1,rs2,rd) vis_dd2d(0x7a, rs1, rs2, rd)
320 #define vis_ornot1s(rs1,rs2,rd) vis_ss2s(0x7b, rs1, rs2, rd)
321 #define vis_ornot2(rs1,rs2,rd) vis_dd2d(0x76, rs1, rs2, rd)
322 #define vis_ornot2s(rs1,rs2,rd) vis_ss2s(0x77, rs1, rs2, rd)
323 #define vis_andnot1(rs1,rs2,rd) vis_dd2d(0x68, rs1, rs2, rd)
324 #define vis_andnot1s(rs1,rs2,rd) vis_ss2s(0x69, rs1, rs2, rd)
325 #define vis_andnot2(rs1,rs2,rd) vis_dd2d(0x64, rs1, rs2, rd)
326 #define vis_andnot2s(rs1,rs2,rd) vis_ss2s(0x65, rs1, rs2, rd)
327
328 /* Pixel component distance. */
329
330 #define vis_pdist(rs1,rs2,rd) vis_dd2d(0x3e, rs1, rs2, rd)
331
332 #endif // AVCODEC_VIS_H