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6de9cd9a | 1 | `/* Implementation of the EOSHIFT intrinsic |
748086b7 | 2 | Copyright 2002, 2005, 2007, 2009 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Paul Brook <paul@nowt.org> |
4 | ||
57dea9f6 | 5 | This file is part of the GNU Fortran 95 runtime library (libgfortran). |
6de9cd9a | 6 | |
57dea9f6 TM |
7 | Libgfortran is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU General Public | |
6de9cd9a | 9 | License as published by the Free Software Foundation; either |
748086b7 | 10 | version 3 of the License, or (at your option) any later version. |
57dea9f6 TM |
11 | |
12 | Libgfortran is distributed in the hope that it will be useful, | |
6de9cd9a DN |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
57dea9f6 | 15 | GNU General Public License for more details. |
6de9cd9a | 16 | |
748086b7 JJ |
17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 25 | |
36ae8a61 | 26 | #include "libgfortran.h" |
6de9cd9a DN |
27 | #include <stdlib.h> |
28 | #include <assert.h> | |
36ae8a61 FXC |
29 | #include <string.h>' |
30 | ||
c9e66eda | 31 | include(iparm.m4)dnl |
6de9cd9a | 32 | |
adea5e16 | 33 | `#if defined (HAVE_'atype_name`) |
644cb69f | 34 | |
7823229b | 35 | static void |
64acfd99 JB |
36 | eoshift3 (gfc_array_char * const restrict ret, |
37 | const gfc_array_char * const restrict array, | |
adea5e16 | 38 | const 'atype` * const restrict h, |
64acfd99 | 39 | const gfc_array_char * const restrict bound, |
adea5e16 | 40 | const 'atype_name` * const restrict pwhich, |
dfb55fdc | 41 | const char * filler, index_type filler_len) |
6de9cd9a DN |
42 | { |
43 | /* r.* indicates the return array. */ | |
e33e218b | 44 | index_type rstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
45 | index_type rstride0; |
46 | index_type roffset; | |
47 | char *rptr; | |
5863aacf | 48 | char * restrict dest; |
6de9cd9a | 49 | /* s.* indicates the source array. */ |
e33e218b | 50 | index_type sstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
51 | index_type sstride0; |
52 | index_type soffset; | |
53 | const char *sptr; | |
54 | const char *src; | |
adea5e16 | 55 | /* h.* indicates the shift array. */ |
e33e218b | 56 | index_type hstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a | 57 | index_type hstride0; |
adea5e16 | 58 | const 'atype_name` *hptr; |
6de9cd9a | 59 | /* b.* indicates the bound array. */ |
e33e218b | 60 | index_type bstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
61 | index_type bstride0; |
62 | const char *bptr; | |
63 | ||
e33e218b TK |
64 | index_type count[GFC_MAX_DIMENSIONS]; |
65 | index_type extent[GFC_MAX_DIMENSIONS]; | |
6de9cd9a | 66 | index_type dim; |
6de9cd9a DN |
67 | index_type len; |
68 | index_type n; | |
dfb55fdc | 69 | index_type size; |
16bff921 | 70 | index_type arraysize; |
6de9cd9a | 71 | int which; |
adea5e16 TK |
72 | 'atype_name` sh; |
73 | 'atype_name` delta; | |
6de9cd9a | 74 | |
7672ae20 AJ |
75 | /* The compiler cannot figure out that these are set, initialize |
76 | them to avoid warnings. */ | |
77 | len = 0; | |
78 | soffset = 0; | |
79 | roffset = 0; | |
80 | ||
16bff921 | 81 | arraysize = size0 ((array_t *) array); |
dfb55fdc TK |
82 | size = GFC_DESCRIPTOR_SIZE(array); |
83 | ||
6de9cd9a DN |
84 | if (pwhich) |
85 | which = *pwhich - 1; | |
86 | else | |
87 | which = 0; | |
88 | ||
0e6d033b TK |
89 | if (ret->data == NULL) |
90 | { | |
91 | int i; | |
92 | ||
16bff921 | 93 | ret->data = internal_malloc_size (size * arraysize); |
efd4dc1a | 94 | ret->offset = 0; |
0e6d033b TK |
95 | ret->dtype = array->dtype; |
96 | for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++) | |
97 | { | |
dfb55fdc TK |
98 | index_type ub, str; |
99 | ||
100 | ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1; | |
0e6d033b TK |
101 | |
102 | if (i == 0) | |
dfb55fdc | 103 | str = 1; |
0e6d033b | 104 | else |
dfb55fdc TK |
105 | str = GFC_DESCRIPTOR_EXTENT(ret,i-1) |
106 | * GFC_DESCRIPTOR_STRIDE(ret,i-1); | |
107 | ||
108 | GFC_DIMENSION_SET(ret->dim[i], 0, ub, str); | |
109 | ||
0e6d033b | 110 | } |
16bff921 TK |
111 | if (arraysize > 0) |
112 | ret->data = internal_malloc_size (size * arraysize); | |
113 | else | |
114 | ret->data = internal_malloc_size (1); | |
115 | ||
0e6d033b | 116 | } |
16bff921 TK |
117 | else if (unlikely (compile_options.bounds_check)) |
118 | { | |
119 | bounds_equal_extents ((array_t *) ret, (array_t *) array, | |
120 | "return value", "EOSHIFT"); | |
121 | } | |
122 | ||
123 | if (unlikely (compile_options.bounds_check)) | |
c44109aa | 124 | { |
16bff921 TK |
125 | bounds_reduced_extents ((array_t *) h, (array_t *) array, which, |
126 | "SHIFT argument", "EOSHIFT"); | |
c44109aa | 127 | } |
0e6d033b | 128 | |
16bff921 TK |
129 | if (arraysize == 0) |
130 | return; | |
6de9cd9a DN |
131 | |
132 | extent[0] = 1; | |
133 | count[0] = 0; | |
6de9cd9a DN |
134 | n = 0; |
135 | for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++) | |
136 | { | |
137 | if (dim == which) | |
138 | { | |
dfb55fdc | 139 | roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); |
6de9cd9a DN |
140 | if (roffset == 0) |
141 | roffset = size; | |
dfb55fdc | 142 | soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); |
6de9cd9a DN |
143 | if (soffset == 0) |
144 | soffset = size; | |
dfb55fdc | 145 | len = GFC_DESCRIPTOR_EXTENT(array,dim); |
6de9cd9a DN |
146 | } |
147 | else | |
148 | { | |
149 | count[n] = 0; | |
dfb55fdc TK |
150 | extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim); |
151 | rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); | |
152 | sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); | |
6de9cd9a | 153 | |
dfb55fdc | 154 | hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n); |
6de9cd9a | 155 | if (bound) |
dfb55fdc | 156 | bstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(bound,n); |
6de9cd9a DN |
157 | else |
158 | bstride[n] = 0; | |
159 | n++; | |
160 | } | |
161 | } | |
162 | if (sstride[0] == 0) | |
163 | sstride[0] = size; | |
164 | if (rstride[0] == 0) | |
165 | rstride[0] = size; | |
166 | if (hstride[0] == 0) | |
167 | hstride[0] = 1; | |
168 | if (bound && bstride[0] == 0) | |
169 | bstride[0] = size; | |
170 | ||
171 | dim = GFC_DESCRIPTOR_RANK (array); | |
172 | rstride0 = rstride[0]; | |
173 | sstride0 = sstride[0]; | |
174 | hstride0 = hstride[0]; | |
175 | bstride0 = bstride[0]; | |
176 | rptr = ret->data; | |
177 | sptr = array->data; | |
178 | hptr = h->data; | |
179 | if (bound) | |
180 | bptr = bound->data; | |
181 | else | |
7823229b | 182 | bptr = NULL; |
6de9cd9a DN |
183 | |
184 | while (rptr) | |
185 | { | |
adea5e16 | 186 | /* Do the shift for this dimension. */ |
6de9cd9a | 187 | sh = *hptr; |
47b3a403 TK |
188 | if (( sh >= 0 ? sh : -sh ) > len) |
189 | { | |
190 | delta = len; | |
191 | sh = len; | |
192 | } | |
193 | else | |
194 | delta = (sh >= 0) ? sh: -sh; | |
195 | ||
6de9cd9a DN |
196 | if (sh > 0) |
197 | { | |
198 | src = &sptr[delta * soffset]; | |
199 | dest = rptr; | |
200 | } | |
201 | else | |
202 | { | |
203 | src = sptr; | |
204 | dest = &rptr[delta * roffset]; | |
205 | } | |
206 | for (n = 0; n < len - delta; n++) | |
207 | { | |
208 | memcpy (dest, src, size); | |
209 | dest += roffset; | |
210 | src += soffset; | |
211 | } | |
212 | if (sh < 0) | |
213 | dest = rptr; | |
214 | n = delta; | |
215 | ||
7823229b RS |
216 | if (bptr) |
217 | while (n--) | |
218 | { | |
219 | memcpy (dest, bptr, size); | |
220 | dest += roffset; | |
221 | } | |
222 | else | |
223 | while (n--) | |
224 | { | |
691da334 FXC |
225 | index_type i; |
226 | ||
227 | if (filler_len == 1) | |
228 | memset (dest, filler[0], size); | |
229 | else | |
230 | for (i = 0; i < size; i += filler_len) | |
231 | memcpy (&dest[i], filler, filler_len); | |
232 | ||
7823229b RS |
233 | dest += roffset; |
234 | } | |
6de9cd9a DN |
235 | |
236 | /* Advance to the next section. */ | |
237 | rptr += rstride0; | |
238 | sptr += sstride0; | |
239 | hptr += hstride0; | |
240 | bptr += bstride0; | |
241 | count[0]++; | |
242 | n = 0; | |
243 | while (count[n] == extent[n]) | |
244 | { | |
245 | /* When we get to the end of a dimension, reset it and increment | |
246 | the next dimension. */ | |
247 | count[n] = 0; | |
248 | /* We could precalculate these products, but this is a less | |
8b6dba81 | 249 | frequently used path so probably not worth it. */ |
6de9cd9a DN |
250 | rptr -= rstride[n] * extent[n]; |
251 | sptr -= sstride[n] * extent[n]; | |
252 | hptr -= hstride[n] * extent[n]; | |
253 | bptr -= bstride[n] * extent[n]; | |
254 | n++; | |
255 | if (n >= dim - 1) | |
256 | { | |
257 | /* Break out of the loop. */ | |
258 | rptr = NULL; | |
259 | break; | |
260 | } | |
261 | else | |
262 | { | |
263 | count[n]++; | |
264 | rptr += rstride[n]; | |
265 | sptr += sstride[n]; | |
266 | hptr += hstride[n]; | |
267 | bptr += bstride[n]; | |
268 | } | |
269 | } | |
270 | } | |
271 | } | |
7823229b | 272 | |
adea5e16 | 273 | extern void eoshift3_'atype_kind` (gfc_array_char * const restrict, |
64acfd99 | 274 | const gfc_array_char * const restrict, |
adea5e16 | 275 | const 'atype` * const restrict, |
64acfd99 | 276 | const gfc_array_char * const restrict, |
adea5e16 TK |
277 | const 'atype_name` *); |
278 | export_proto(eoshift3_'atype_kind`); | |
7823229b RS |
279 | |
280 | void | |
adea5e16 | 281 | eoshift3_'atype_kind` (gfc_array_char * const restrict ret, |
64acfd99 | 282 | const gfc_array_char * const restrict array, |
adea5e16 | 283 | const 'atype` * const restrict h, |
64acfd99 | 284 | const gfc_array_char * const restrict bound, |
adea5e16 | 285 | const 'atype_name` * const restrict pwhich) |
7823229b | 286 | { |
dfb55fdc | 287 | eoshift3 (ret, array, h, bound, pwhich, "\0", 1); |
7823229b RS |
288 | } |
289 | ||
691da334 | 290 | |
adea5e16 | 291 | extern void eoshift3_'atype_kind`_char (gfc_array_char * const restrict, |
64acfd99 JB |
292 | GFC_INTEGER_4, |
293 | const gfc_array_char * const restrict, | |
adea5e16 | 294 | const 'atype` * const restrict, |
64acfd99 | 295 | const gfc_array_char * const restrict, |
adea5e16 | 296 | const 'atype_name` * const restrict, |
64acfd99 | 297 | GFC_INTEGER_4, GFC_INTEGER_4); |
adea5e16 | 298 | export_proto(eoshift3_'atype_kind`_char); |
7823229b RS |
299 | |
300 | void | |
adea5e16 | 301 | eoshift3_'atype_kind`_char (gfc_array_char * const restrict ret, |
64acfd99 JB |
302 | GFC_INTEGER_4 ret_length __attribute__((unused)), |
303 | const gfc_array_char * const restrict array, | |
adea5e16 | 304 | const 'atype` * const restrict h, |
64acfd99 | 305 | const gfc_array_char * const restrict bound, |
adea5e16 | 306 | const 'atype_name` * const restrict pwhich, |
dfb55fdc | 307 | GFC_INTEGER_4 array_length __attribute__((unused)), |
64acfd99 | 308 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
7823229b | 309 | { |
dfb55fdc | 310 | eoshift3 (ret, array, h, bound, pwhich, " ", 1); |
691da334 FXC |
311 | } |
312 | ||
313 | ||
314 | extern void eoshift3_'atype_kind`_char4 (gfc_array_char * const restrict, | |
315 | GFC_INTEGER_4, | |
316 | const gfc_array_char * const restrict, | |
317 | const 'atype` * const restrict, | |
318 | const gfc_array_char * const restrict, | |
319 | const 'atype_name` * const restrict, | |
320 | GFC_INTEGER_4, GFC_INTEGER_4); | |
321 | export_proto(eoshift3_'atype_kind`_char4); | |
322 | ||
323 | void | |
324 | eoshift3_'atype_kind`_char4 (gfc_array_char * const restrict ret, | |
325 | GFC_INTEGER_4 ret_length __attribute__((unused)), | |
326 | const gfc_array_char * const restrict array, | |
327 | const 'atype` * const restrict h, | |
328 | const gfc_array_char * const restrict bound, | |
329 | const 'atype_name` * const restrict pwhich, | |
dfb55fdc | 330 | GFC_INTEGER_4 array_length __attribute__((unused)), |
691da334 FXC |
331 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
332 | { | |
333 | static const gfc_char4_t space = (unsigned char) ''` ''`; | |
dfb55fdc | 334 | eoshift3 (ret, array, h, bound, pwhich, |
691da334 | 335 | (const char *) &space, sizeof (gfc_char4_t)); |
7823229b | 336 | } |
644cb69f | 337 | |
adea5e16 | 338 | #endif' |