xref: /qemu/target/arm/tcg/iwmmxt_helper.c (revision a3ef070e)
1 /*
2  * iwMMXt micro operations for XScale.
3  *
4  * Copyright (c) 2007 OpenedHand, Ltd.
5  * Written by Andrzej Zaborowski <andrew@openedhand.com>
6  * Copyright (c) 2008 CodeSourcery
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * This library 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 GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20  */
21 
22 #include "qemu/osdep.h"
23 
24 #include "cpu.h"
25 #include "exec/helper-proto.h"
26 
27 /* iwMMXt macros extracted from GNU gdb.  */
28 
29 /* Set the SIMD wCASF flags for 8, 16, 32 or 64-bit operations.  */
30 #define SIMD8_SET(v, n, b)      ((v != 0) << ((((b) + 1) * 4) + (n)))
31 #define SIMD16_SET(v, n, h)     ((v != 0) << ((((h) + 1) * 8) + (n)))
32 #define SIMD32_SET(v, n, w)     ((v != 0) << ((((w) + 1) * 16) + (n)))
33 #define SIMD64_SET(v, n)        ((v != 0) << (32 + (n)))
34 /* Flags to pass as "n" above.  */
35 #define SIMD_NBIT       -1
36 #define SIMD_ZBIT       -2
37 #define SIMD_CBIT       -3
38 #define SIMD_VBIT       -4
39 /* Various status bit macros.  */
40 #define NBIT8(x)        ((x) & 0x80)
41 #define NBIT16(x)       ((x) & 0x8000)
42 #define NBIT32(x)       ((x) & 0x80000000)
43 #define NBIT64(x)       ((x) & 0x8000000000000000ULL)
44 #define ZBIT8(x)        (((x) & 0xff) == 0)
45 #define ZBIT16(x)       (((x) & 0xffff) == 0)
46 #define ZBIT32(x)       (((x) & 0xffffffff) == 0)
47 #define ZBIT64(x)       (x == 0)
48 /* Sign extension macros.  */
49 #define EXTEND8H(a)     ((uint16_t) (int8_t) (a))
50 #define EXTEND8(a)      ((uint32_t) (int8_t) (a))
51 #define EXTEND16(a)     ((uint32_t) (int16_t) (a))
52 #define EXTEND16S(a)    ((int32_t) (int16_t) (a))
53 #define EXTEND32(a)     ((uint64_t) (int32_t) (a))
54 
HELPER(iwmmxt_maddsq)55 uint64_t HELPER(iwmmxt_maddsq)(uint64_t a, uint64_t b)
56 {
57     a = ((
58             EXTEND16S((a >> 0) & 0xffff) * EXTEND16S((b >> 0) & 0xffff) +
59             EXTEND16S((a >> 16) & 0xffff) * EXTEND16S((b >> 16) & 0xffff)
60         ) & 0xffffffff) | ((uint64_t) (
61             EXTEND16S((a >> 32) & 0xffff) * EXTEND16S((b >> 32) & 0xffff) +
62             EXTEND16S((a >> 48) & 0xffff) * EXTEND16S((b >> 48) & 0xffff)
63         ) << 32);
64     return a;
65 }
66 
HELPER(iwmmxt_madduq)67 uint64_t HELPER(iwmmxt_madduq)(uint64_t a, uint64_t b)
68 {
69     a = ((
70             ((a >> 0) & 0xffff) * ((b >> 0) & 0xffff) +
71             ((a >> 16) & 0xffff) * ((b >> 16) & 0xffff)
72         ) & 0xffffffff) | ((
73             ((a >> 32) & 0xffff) * ((b >> 32) & 0xffff) +
74             ((a >> 48) & 0xffff) * ((b >> 48) & 0xffff)
75         ) << 32);
76     return a;
77 }
78 
HELPER(iwmmxt_sadb)79 uint64_t HELPER(iwmmxt_sadb)(uint64_t a, uint64_t b)
80 {
81 #define abs(x) (((x) >= 0) ? x : -x)
82 #define SADB(SHR) abs((int) ((a >> SHR) & 0xff) - (int) ((b >> SHR) & 0xff))
83     return
84         SADB(0) + SADB(8) + SADB(16) + SADB(24) +
85         SADB(32) + SADB(40) + SADB(48) + SADB(56);
86 #undef SADB
87 }
88 
HELPER(iwmmxt_sadw)89 uint64_t HELPER(iwmmxt_sadw)(uint64_t a, uint64_t b)
90 {
91 #define SADW(SHR) \
92     abs((int) ((a >> SHR) & 0xffff) - (int) ((b >> SHR) & 0xffff))
93     return SADW(0) + SADW(16) + SADW(32) + SADW(48);
94 #undef SADW
95 }
96 
HELPER(iwmmxt_mulslw)97 uint64_t HELPER(iwmmxt_mulslw)(uint64_t a, uint64_t b)
98 {
99 #define MULS(SHR) ((uint64_t) ((( \
100         EXTEND16S((a >> SHR) & 0xffff) * EXTEND16S((b >> SHR) & 0xffff) \
101     ) >> 0) & 0xffff) << SHR)
102     return MULS(0) | MULS(16) | MULS(32) | MULS(48);
103 #undef MULS
104 }
105 
HELPER(iwmmxt_mulshw)106 uint64_t HELPER(iwmmxt_mulshw)(uint64_t a, uint64_t b)
107 {
108 #define MULS(SHR) ((uint64_t) ((( \
109         EXTEND16S((a >> SHR) & 0xffff) * EXTEND16S((b >> SHR) & 0xffff) \
110     ) >> 16) & 0xffff) << SHR)
111     return MULS(0) | MULS(16) | MULS(32) | MULS(48);
112 #undef MULS
113 }
114 
HELPER(iwmmxt_mululw)115 uint64_t HELPER(iwmmxt_mululw)(uint64_t a, uint64_t b)
116 {
117 #define MULU(SHR) ((uint64_t) ((( \
118         ((a >> SHR) & 0xffff) * ((b >> SHR) & 0xffff) \
119     ) >> 0) & 0xffff) << SHR)
120     return MULU(0) | MULU(16) | MULU(32) | MULU(48);
121 #undef MULU
122 }
123 
HELPER(iwmmxt_muluhw)124 uint64_t HELPER(iwmmxt_muluhw)(uint64_t a, uint64_t b)
125 {
126 #define MULU(SHR) ((uint64_t) ((( \
127         ((a >> SHR) & 0xffff) * ((b >> SHR) & 0xffff) \
128     ) >> 16) & 0xffff) << SHR)
129     return MULU(0) | MULU(16) | MULU(32) | MULU(48);
130 #undef MULU
131 }
132 
HELPER(iwmmxt_macsw)133 uint64_t HELPER(iwmmxt_macsw)(uint64_t a, uint64_t b)
134 {
135 #define MACS(SHR) ( \
136         EXTEND16((a >> SHR) & 0xffff) * EXTEND16S((b >> SHR) & 0xffff))
137     return (int64_t) (MACS(0) + MACS(16) + MACS(32) + MACS(48));
138 #undef MACS
139 }
140 
HELPER(iwmmxt_macuw)141 uint64_t HELPER(iwmmxt_macuw)(uint64_t a, uint64_t b)
142 {
143 #define MACU(SHR) ( \
144         (uint32_t) ((a >> SHR) & 0xffff) * \
145         (uint32_t) ((b >> SHR) & 0xffff))
146     return MACU(0) + MACU(16) + MACU(32) + MACU(48);
147 #undef MACU
148 }
149 
150 #define NZBIT8(x, i) \
151     SIMD8_SET(NBIT8((x) & 0xff), SIMD_NBIT, i) | \
152     SIMD8_SET(ZBIT8((x) & 0xff), SIMD_ZBIT, i)
153 #define NZBIT16(x, i) \
154     SIMD16_SET(NBIT16((x) & 0xffff), SIMD_NBIT, i) | \
155     SIMD16_SET(ZBIT16((x) & 0xffff), SIMD_ZBIT, i)
156 #define NZBIT32(x, i) \
157     SIMD32_SET(NBIT32((x) & 0xffffffff), SIMD_NBIT, i) | \
158     SIMD32_SET(ZBIT32((x) & 0xffffffff), SIMD_ZBIT, i)
159 #define NZBIT64(x) \
160     SIMD64_SET(NBIT64(x), SIMD_NBIT) | \
161     SIMD64_SET(ZBIT64(x), SIMD_ZBIT)
162 #define IWMMXT_OP_UNPACK(S, SH0, SH1, SH2, SH3)                         \
163 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, b)))(CPUARMState *env, \
164                                                  uint64_t a, uint64_t b) \
165 {                                                               \
166     a =                                                                 \
167         (((a >> SH0) & 0xff) << 0) | (((b >> SH0) & 0xff) << 8) |       \
168         (((a >> SH1) & 0xff) << 16) | (((b >> SH1) & 0xff) << 24) |     \
169         (((a >> SH2) & 0xff) << 32) | (((b >> SH2) & 0xff) << 40) |     \
170         (((a >> SH3) & 0xff) << 48) | (((b >> SH3) & 0xff) << 56);      \
171     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
172         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |                         \
173         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |               \
174         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |               \
175         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);                \
176     return a;                                                   \
177 }                                                               \
178 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, w)))(CPUARMState *env, \
179                                         uint64_t a, uint64_t b) \
180 {                                                               \
181     a =                                                                 \
182         (((a >> SH0) & 0xffff) << 0) |                          \
183         (((b >> SH0) & 0xffff) << 16) |                                 \
184         (((a >> SH2) & 0xffff) << 32) |                                 \
185         (((b >> SH2) & 0xffff) << 48);                          \
186     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
187         NZBIT8(a >> 0, 0) | NZBIT8(a >> 16, 1) |                \
188         NZBIT8(a >> 32, 2) | NZBIT8(a >> 48, 3);                \
189     return a;                                                   \
190 }                                                               \
191 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, l)))(CPUARMState *env, \
192                                         uint64_t a, uint64_t b) \
193 {                                                               \
194     a =                                                                 \
195         (((a >> SH0) & 0xffffffff) << 0) |                      \
196         (((b >> SH0) & 0xffffffff) << 32);                      \
197     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
198         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);               \
199     return a;                                                   \
200 }                                                               \
201 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, ub)))(CPUARMState *env, \
202                                                   uint64_t x)   \
203 {                                                               \
204     x =                                                                 \
205         (((x >> SH0) & 0xff) << 0) |                            \
206         (((x >> SH1) & 0xff) << 16) |                           \
207         (((x >> SH2) & 0xff) << 32) |                           \
208         (((x >> SH3) & 0xff) << 48);                            \
209     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
210         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |              \
211         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);              \
212     return x;                                                   \
213 }                                                               \
214 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, uw)))(CPUARMState *env, \
215                                                   uint64_t x)   \
216 {                                                               \
217     x =                                                                 \
218         (((x >> SH0) & 0xffff) << 0) |                          \
219         (((x >> SH2) & 0xffff) << 32);                          \
220     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
221         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);               \
222     return x;                                                   \
223 }                                                               \
224 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, ul)))(CPUARMState *env, \
225                                                   uint64_t x)   \
226 {                                                               \
227     x = (((x >> SH0) & 0xffffffff) << 0);                       \
228     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x >> 0);      \
229     return x;                                                   \
230 }                                                               \
231 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, sb)))(CPUARMState *env, \
232                                                   uint64_t x)   \
233 {                                                               \
234     x =                                                                 \
235         ((uint64_t) EXTEND8H((x >> SH0) & 0xff) << 0) |                 \
236         ((uint64_t) EXTEND8H((x >> SH1) & 0xff) << 16) |        \
237         ((uint64_t) EXTEND8H((x >> SH2) & 0xff) << 32) |        \
238         ((uint64_t) EXTEND8H((x >> SH3) & 0xff) << 48);                 \
239     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
240         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |              \
241         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);              \
242     return x;                                                   \
243 }                                                               \
244 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, sw)))(CPUARMState *env, \
245                                                   uint64_t x)   \
246 {                                                               \
247     x =                                                                 \
248         ((uint64_t) EXTEND16((x >> SH0) & 0xffff) << 0) |       \
249         ((uint64_t) EXTEND16((x >> SH2) & 0xffff) << 32);       \
250     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
251         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);               \
252     return x;                                                   \
253 }                                                               \
254 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, sl)))(CPUARMState *env, \
255                                                   uint64_t x)   \
256 {                                                               \
257     x = EXTEND32((x >> SH0) & 0xffffffff);                      \
258     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x >> 0);      \
259     return x;                                                   \
260 }
261 IWMMXT_OP_UNPACK(l, 0, 8, 16, 24)
262 IWMMXT_OP_UNPACK(h, 32, 40, 48, 56)
263 
264 #define IWMMXT_OP_CMP(SUFF, Tb, Tw, Tl, O)                      \
265 uint64_t HELPER(glue(iwmmxt_, glue(SUFF, b)))(CPUARMState *env,    \
266                                         uint64_t a, uint64_t b) \
267 {                                                               \
268     a =                                                                 \
269         CMP(0, Tb, O, 0xff) | CMP(8, Tb, O, 0xff) |             \
270         CMP(16, Tb, O, 0xff) | CMP(24, Tb, O, 0xff) |           \
271         CMP(32, Tb, O, 0xff) | CMP(40, Tb, O, 0xff) |           \
272         CMP(48, Tb, O, 0xff) | CMP(56, Tb, O, 0xff);            \
273     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
274         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |                         \
275         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |               \
276         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |               \
277         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);                \
278     return a;                                                   \
279 }                                                               \
280 uint64_t HELPER(glue(iwmmxt_, glue(SUFF, w)))(CPUARMState *env,    \
281                                         uint64_t a, uint64_t b) \
282 {                                                               \
283     a = CMP(0, Tw, O, 0xffff) | CMP(16, Tw, O, 0xffff) |        \
284         CMP(32, Tw, O, 0xffff) | CMP(48, Tw, O, 0xffff);        \
285     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
286         NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |              \
287         NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);              \
288     return a;                                                   \
289 }                                                               \
290 uint64_t HELPER(glue(iwmmxt_, glue(SUFF, l)))(CPUARMState *env,    \
291                                         uint64_t a, uint64_t b) \
292 {                                                               \
293     a = CMP(0, Tl, O, 0xffffffff) |                             \
294         CMP(32, Tl, O, 0xffffffff);                             \
295     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
296         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);               \
297     return a;                                                   \
298 }
299 #define CMP(SHR, TYPE, OPER, MASK) ((((TYPE) ((a >> SHR) & MASK) OPER \
300             (TYPE) ((b >> SHR) & MASK)) ? (uint64_t) MASK : 0) << SHR)
301 IWMMXT_OP_CMP(cmpeq, uint8_t, uint16_t, uint32_t, ==)
302 IWMMXT_OP_CMP(cmpgts, int8_t, int16_t, int32_t, >)
303 IWMMXT_OP_CMP(cmpgtu, uint8_t, uint16_t, uint32_t, >)
304 #undef CMP
305 #define CMP(SHR, TYPE, OPER, MASK) ((((TYPE) ((a >> SHR) & MASK) OPER \
306             (TYPE) ((b >> SHR) & MASK)) ? a : b) & ((uint64_t) MASK << SHR))
307 IWMMXT_OP_CMP(mins, int8_t, int16_t, int32_t, <)
308 IWMMXT_OP_CMP(minu, uint8_t, uint16_t, uint32_t, <)
309 IWMMXT_OP_CMP(maxs, int8_t, int16_t, int32_t, >)
310 IWMMXT_OP_CMP(maxu, uint8_t, uint16_t, uint32_t, >)
311 #undef CMP
312 #define CMP(SHR, TYPE, OPER, MASK) ((uint64_t) (((TYPE) ((a >> SHR) & MASK) \
313             OPER (TYPE) ((b >> SHR) & MASK)) & MASK) << SHR)
314 IWMMXT_OP_CMP(subn, uint8_t, uint16_t, uint32_t, -)
315 IWMMXT_OP_CMP(addn, uint8_t, uint16_t, uint32_t, +)
316 #undef CMP
317 /* TODO Signed- and Unsigned-Saturation */
318 #define CMP(SHR, TYPE, OPER, MASK) ((uint64_t) (((TYPE) ((a >> SHR) & MASK) \
319             OPER (TYPE) ((b >> SHR) & MASK)) & MASK) << SHR)
320 IWMMXT_OP_CMP(subu, uint8_t, uint16_t, uint32_t, -)
321 IWMMXT_OP_CMP(addu, uint8_t, uint16_t, uint32_t, +)
322 IWMMXT_OP_CMP(subs, int8_t, int16_t, int32_t, -)
323 IWMMXT_OP_CMP(adds, int8_t, int16_t, int32_t, +)
324 #undef CMP
325 #undef IWMMXT_OP_CMP
326 
327 #define AVGB(SHR) ((( \
328         ((a >> SHR) & 0xff) + ((b >> SHR) & 0xff) + round) >> 1) << SHR)
329 #define IWMMXT_OP_AVGB(r)                                                 \
330 uint64_t HELPER(iwmmxt_avgb##r)(CPUARMState *env, uint64_t a, uint64_t b)    \
331 {                                                                         \
332     const int round = r;                                                  \
333     a = AVGB(0) | AVGB(8) | AVGB(16) | AVGB(24) |                         \
334         AVGB(32) | AVGB(40) | AVGB(48) | AVGB(56);                        \
335     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                                 \
336         SIMD8_SET(ZBIT8((a >> 0) & 0xff), SIMD_ZBIT, 0) |                 \
337         SIMD8_SET(ZBIT8((a >> 8) & 0xff), SIMD_ZBIT, 1) |                 \
338         SIMD8_SET(ZBIT8((a >> 16) & 0xff), SIMD_ZBIT, 2) |                \
339         SIMD8_SET(ZBIT8((a >> 24) & 0xff), SIMD_ZBIT, 3) |                \
340         SIMD8_SET(ZBIT8((a >> 32) & 0xff), SIMD_ZBIT, 4) |                \
341         SIMD8_SET(ZBIT8((a >> 40) & 0xff), SIMD_ZBIT, 5) |                \
342         SIMD8_SET(ZBIT8((a >> 48) & 0xff), SIMD_ZBIT, 6) |                \
343         SIMD8_SET(ZBIT8((a >> 56) & 0xff), SIMD_ZBIT, 7);                 \
344     return a;                                                             \
345 }
346 IWMMXT_OP_AVGB(0)
347 IWMMXT_OP_AVGB(1)
348 #undef IWMMXT_OP_AVGB
349 #undef AVGB
350 
351 #define AVGW(SHR) ((( \
352         ((a >> SHR) & 0xffff) + ((b >> SHR) & 0xffff) + round) >> 1) << SHR)
353 #define IWMMXT_OP_AVGW(r)                                               \
354 uint64_t HELPER(iwmmxt_avgw##r)(CPUARMState *env, uint64_t a, uint64_t b)  \
355 {                                                                       \
356     const int round = r;                                                \
357     a = AVGW(0) | AVGW(16) | AVGW(32) | AVGW(48);                       \
358     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                               \
359         SIMD16_SET(ZBIT16((a >> 0) & 0xffff), SIMD_ZBIT, 0) |           \
360         SIMD16_SET(ZBIT16((a >> 16) & 0xffff), SIMD_ZBIT, 1) |          \
361         SIMD16_SET(ZBIT16((a >> 32) & 0xffff), SIMD_ZBIT, 2) |          \
362         SIMD16_SET(ZBIT16((a >> 48) & 0xffff), SIMD_ZBIT, 3);           \
363     return a;                                                           \
364 }
365 IWMMXT_OP_AVGW(0)
366 IWMMXT_OP_AVGW(1)
367 #undef IWMMXT_OP_AVGW
368 #undef AVGW
369 
HELPER(iwmmxt_align)370 uint64_t HELPER(iwmmxt_align)(uint64_t a, uint64_t b, uint32_t n)
371 {
372     a >>= n << 3;
373     a |= b << (64 - (n << 3));
374     return a;
375 }
376 
HELPER(iwmmxt_insr)377 uint64_t HELPER(iwmmxt_insr)(uint64_t x, uint32_t a, uint32_t b, uint32_t n)
378 {
379     x &= ~((uint64_t) b << n);
380     x |= (uint64_t) (a & b) << n;
381     return x;
382 }
383 
HELPER(iwmmxt_setpsr_nz)384 uint32_t HELPER(iwmmxt_setpsr_nz)(uint64_t x)
385 {
386     return SIMD64_SET((x == 0), SIMD_ZBIT) |
387            SIMD64_SET((x & (1ULL << 63)), SIMD_NBIT);
388 }
389 
HELPER(iwmmxt_bcstb)390 uint64_t HELPER(iwmmxt_bcstb)(uint32_t arg)
391 {
392     arg &= 0xff;
393     return
394         ((uint64_t) arg << 0 ) | ((uint64_t) arg << 8 ) |
395         ((uint64_t) arg << 16) | ((uint64_t) arg << 24) |
396         ((uint64_t) arg << 32) | ((uint64_t) arg << 40) |
397         ((uint64_t) arg << 48) | ((uint64_t) arg << 56);
398 }
399 
HELPER(iwmmxt_bcstw)400 uint64_t HELPER(iwmmxt_bcstw)(uint32_t arg)
401 {
402     arg &= 0xffff;
403     return
404         ((uint64_t) arg << 0 ) | ((uint64_t) arg << 16) |
405         ((uint64_t) arg << 32) | ((uint64_t) arg << 48);
406 }
407 
HELPER(iwmmxt_bcstl)408 uint64_t HELPER(iwmmxt_bcstl)(uint32_t arg)
409 {
410     return arg | ((uint64_t) arg << 32);
411 }
412 
HELPER(iwmmxt_addcb)413 uint64_t HELPER(iwmmxt_addcb)(uint64_t x)
414 {
415     return
416         ((x >> 0) & 0xff) + ((x >> 8) & 0xff) +
417         ((x >> 16) & 0xff) + ((x >> 24) & 0xff) +
418         ((x >> 32) & 0xff) + ((x >> 40) & 0xff) +
419         ((x >> 48) & 0xff) + ((x >> 56) & 0xff);
420 }
421 
HELPER(iwmmxt_addcw)422 uint64_t HELPER(iwmmxt_addcw)(uint64_t x)
423 {
424     return
425         ((x >> 0) & 0xffff) + ((x >> 16) & 0xffff) +
426         ((x >> 32) & 0xffff) + ((x >> 48) & 0xffff);
427 }
428 
HELPER(iwmmxt_addcl)429 uint64_t HELPER(iwmmxt_addcl)(uint64_t x)
430 {
431     return (x & 0xffffffff) + (x >> 32);
432 }
433 
HELPER(iwmmxt_msbb)434 uint32_t HELPER(iwmmxt_msbb)(uint64_t x)
435 {
436     return
437         ((x >> 7) & 0x01) | ((x >> 14) & 0x02) |
438         ((x >> 21) & 0x04) | ((x >> 28) & 0x08) |
439         ((x >> 35) & 0x10) | ((x >> 42) & 0x20) |
440         ((x >> 49) & 0x40) | ((x >> 56) & 0x80);
441 }
442 
HELPER(iwmmxt_msbw)443 uint32_t HELPER(iwmmxt_msbw)(uint64_t x)
444 {
445     return
446         ((x >> 15) & 0x01) | ((x >> 30) & 0x02) |
447         ((x >> 45) & 0x04) | ((x >> 52) & 0x08);
448 }
449 
HELPER(iwmmxt_msbl)450 uint32_t HELPER(iwmmxt_msbl)(uint64_t x)
451 {
452     return ((x >> 31) & 0x01) | ((x >> 62) & 0x02);
453 }
454 
455 /* FIXME: Split wCASF setting into a separate op to avoid env use.  */
HELPER(iwmmxt_srlw)456 uint64_t HELPER(iwmmxt_srlw)(CPUARMState *env, uint64_t x, uint32_t n)
457 {
458     x = (((x & (0xffffll << 0)) >> n) & (0xffffll << 0)) |
459         (((x & (0xffffll << 16)) >> n) & (0xffffll << 16)) |
460         (((x & (0xffffll << 32)) >> n) & (0xffffll << 32)) |
461         (((x & (0xffffll << 48)) >> n) & (0xffffll << 48));
462     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
463         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
464         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
465     return x;
466 }
467 
HELPER(iwmmxt_srll)468 uint64_t HELPER(iwmmxt_srll)(CPUARMState *env, uint64_t x, uint32_t n)
469 {
470     x = ((x & (0xffffffffll << 0)) >> n) |
471         ((x >> n) & (0xffffffffll << 32));
472     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
473         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
474     return x;
475 }
476 
HELPER(iwmmxt_srlq)477 uint64_t HELPER(iwmmxt_srlq)(CPUARMState *env, uint64_t x, uint32_t n)
478 {
479     x >>= n;
480     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
481     return x;
482 }
483 
HELPER(iwmmxt_sllw)484 uint64_t HELPER(iwmmxt_sllw)(CPUARMState *env, uint64_t x, uint32_t n)
485 {
486     x = (((x & (0xffffll << 0)) << n) & (0xffffll << 0)) |
487         (((x & (0xffffll << 16)) << n) & (0xffffll << 16)) |
488         (((x & (0xffffll << 32)) << n) & (0xffffll << 32)) |
489         (((x & (0xffffll << 48)) << n) & (0xffffll << 48));
490     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
491         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
492         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
493     return x;
494 }
495 
HELPER(iwmmxt_slll)496 uint64_t HELPER(iwmmxt_slll)(CPUARMState *env, uint64_t x, uint32_t n)
497 {
498     x = ((x << n) & (0xffffffffll << 0)) |
499         ((x & (0xffffffffll << 32)) << n);
500     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
501         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
502     return x;
503 }
504 
HELPER(iwmmxt_sllq)505 uint64_t HELPER(iwmmxt_sllq)(CPUARMState *env, uint64_t x, uint32_t n)
506 {
507     x <<= n;
508     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
509     return x;
510 }
511 
HELPER(iwmmxt_sraw)512 uint64_t HELPER(iwmmxt_sraw)(CPUARMState *env, uint64_t x, uint32_t n)
513 {
514     x = ((uint64_t) ((EXTEND16(x >> 0) >> n) & 0xffff) << 0) |
515         ((uint64_t) ((EXTEND16(x >> 16) >> n) & 0xffff) << 16) |
516         ((uint64_t) ((EXTEND16(x >> 32) >> n) & 0xffff) << 32) |
517         ((uint64_t) ((EXTEND16(x >> 48) >> n) & 0xffff) << 48);
518     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
519         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
520         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
521     return x;
522 }
523 
HELPER(iwmmxt_sral)524 uint64_t HELPER(iwmmxt_sral)(CPUARMState *env, uint64_t x, uint32_t n)
525 {
526     x = (((EXTEND32(x >> 0) >> n) & 0xffffffff) << 0) |
527         (((EXTEND32(x >> 32) >> n) & 0xffffffff) << 32);
528     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
529         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
530     return x;
531 }
532 
HELPER(iwmmxt_sraq)533 uint64_t HELPER(iwmmxt_sraq)(CPUARMState *env, uint64_t x, uint32_t n)
534 {
535     x = (int64_t) x >> n;
536     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
537     return x;
538 }
539 
HELPER(iwmmxt_rorw)540 uint64_t HELPER(iwmmxt_rorw)(CPUARMState *env, uint64_t x, uint32_t n)
541 {
542     x = ((((x & (0xffffll << 0)) >> n) |
543           ((x & (0xffffll << 0)) << (16 - n))) & (0xffffll << 0)) |
544         ((((x & (0xffffll << 16)) >> n) |
545           ((x & (0xffffll << 16)) << (16 - n))) & (0xffffll << 16)) |
546         ((((x & (0xffffll << 32)) >> n) |
547           ((x & (0xffffll << 32)) << (16 - n))) & (0xffffll << 32)) |
548         ((((x & (0xffffll << 48)) >> n) |
549           ((x & (0xffffll << 48)) << (16 - n))) & (0xffffll << 48));
550     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
551         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
552         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
553     return x;
554 }
555 
HELPER(iwmmxt_rorl)556 uint64_t HELPER(iwmmxt_rorl)(CPUARMState *env, uint64_t x, uint32_t n)
557 {
558     x = ((x & (0xffffffffll << 0)) >> n) |
559         ((x >> n) & (0xffffffffll << 32)) |
560         ((x << (32 - n)) & (0xffffffffll << 0)) |
561         ((x & (0xffffffffll << 32)) << (32 - n));
562     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
563         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
564     return x;
565 }
566 
HELPER(iwmmxt_rorq)567 uint64_t HELPER(iwmmxt_rorq)(CPUARMState *env, uint64_t x, uint32_t n)
568 {
569     x = ror64(x, n);
570     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
571     return x;
572 }
573 
HELPER(iwmmxt_shufh)574 uint64_t HELPER(iwmmxt_shufh)(CPUARMState *env, uint64_t x, uint32_t n)
575 {
576     x = (((x >> ((n << 4) & 0x30)) & 0xffff) << 0) |
577         (((x >> ((n << 2) & 0x30)) & 0xffff) << 16) |
578         (((x >> ((n << 0) & 0x30)) & 0xffff) << 32) |
579         (((x >> ((n >> 2) & 0x30)) & 0xffff) << 48);
580     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
581         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
582         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
583     return x;
584 }
585 
586 /* TODO: Unsigned-Saturation */
HELPER(iwmmxt_packuw)587 uint64_t HELPER(iwmmxt_packuw)(CPUARMState *env, uint64_t a, uint64_t b)
588 {
589     a = (((a >> 0) & 0xff) << 0) | (((a >> 16) & 0xff) << 8) |
590         (((a >> 32) & 0xff) << 16) | (((a >> 48) & 0xff) << 24) |
591         (((b >> 0) & 0xff) << 32) | (((b >> 16) & 0xff) << 40) |
592         (((b >> 32) & 0xff) << 48) | (((b >> 48) & 0xff) << 56);
593     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
594         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |
595         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |
596         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |
597         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);
598     return a;
599 }
600 
HELPER(iwmmxt_packul)601 uint64_t HELPER(iwmmxt_packul)(CPUARMState *env, uint64_t a, uint64_t b)
602 {
603     a = (((a >> 0) & 0xffff) << 0) | (((a >> 32) & 0xffff) << 16) |
604         (((b >> 0) & 0xffff) << 32) | (((b >> 32) & 0xffff) << 48);
605     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
606         NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |
607         NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);
608     return a;
609 }
610 
HELPER(iwmmxt_packuq)611 uint64_t HELPER(iwmmxt_packuq)(CPUARMState *env, uint64_t a, uint64_t b)
612 {
613     a = (a & 0xffffffff) | ((b & 0xffffffff) << 32);
614     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
615         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);
616     return a;
617 }
618 
619 /* TODO: Signed-Saturation */
HELPER(iwmmxt_packsw)620 uint64_t HELPER(iwmmxt_packsw)(CPUARMState *env, uint64_t a, uint64_t b)
621 {
622     a = (((a >> 0) & 0xff) << 0) | (((a >> 16) & 0xff) << 8) |
623         (((a >> 32) & 0xff) << 16) | (((a >> 48) & 0xff) << 24) |
624         (((b >> 0) & 0xff) << 32) | (((b >> 16) & 0xff) << 40) |
625         (((b >> 32) & 0xff) << 48) | (((b >> 48) & 0xff) << 56);
626     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
627         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |
628         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |
629         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |
630         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);
631     return a;
632 }
633 
HELPER(iwmmxt_packsl)634 uint64_t HELPER(iwmmxt_packsl)(CPUARMState *env, uint64_t a, uint64_t b)
635 {
636     a = (((a >> 0) & 0xffff) << 0) | (((a >> 32) & 0xffff) << 16) |
637         (((b >> 0) & 0xffff) << 32) | (((b >> 32) & 0xffff) << 48);
638     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
639         NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |
640         NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);
641     return a;
642 }
643 
HELPER(iwmmxt_packsq)644 uint64_t HELPER(iwmmxt_packsq)(CPUARMState *env, uint64_t a, uint64_t b)
645 {
646     a = (a & 0xffffffff) | ((b & 0xffffffff) << 32);
647     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
648         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);
649     return a;
650 }
651 
HELPER(iwmmxt_muladdsl)652 uint64_t HELPER(iwmmxt_muladdsl)(uint64_t c, uint32_t a, uint32_t b)
653 {
654     return c + ((int32_t) EXTEND32(a) * (int32_t) EXTEND32(b));
655 }
656 
HELPER(iwmmxt_muladdsw)657 uint64_t HELPER(iwmmxt_muladdsw)(uint64_t c, uint32_t a, uint32_t b)
658 {
659     c += EXTEND32(EXTEND16S((a >> 0) & 0xffff) *
660                   EXTEND16S((b >> 0) & 0xffff));
661     c += EXTEND32(EXTEND16S((a >> 16) & 0xffff) *
662                   EXTEND16S((b >> 16) & 0xffff));
663     return c;
664 }
665 
HELPER(iwmmxt_muladdswl)666 uint64_t HELPER(iwmmxt_muladdswl)(uint64_t c, uint32_t a, uint32_t b)
667 {
668     return c + (EXTEND32(EXTEND16S(a & 0xffff) *
669                          EXTEND16S(b & 0xffff)));
670 }
671