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6de9cd9a | 1 | `/* Implementation of the EOSHIFT intrinsic |
818ab71a | 2 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Paul Brook <paul@nowt.org> |
4 | ||
21d1335b | 5 | This file is part of the GNU Fortran 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 | eoshift1 (gfc_array_char * const restrict ret, |
37 | const gfc_array_char * const restrict array, | |
adea5e16 | 38 | const 'atype` * const restrict h, |
64acfd99 | 39 | const char * const restrict pbound, |
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 | |
e33e218b TK |
60 | index_type count[GFC_MAX_DIMENSIONS]; |
61 | index_type extent[GFC_MAX_DIMENSIONS]; | |
6de9cd9a | 62 | index_type dim; |
6de9cd9a DN |
63 | index_type len; |
64 | index_type n; | |
dfb55fdc | 65 | index_type size; |
16bff921 | 66 | index_type arraysize; |
6de9cd9a | 67 | int which; |
adea5e16 TK |
68 | 'atype_name` sh; |
69 | 'atype_name` delta; | |
6de9cd9a | 70 | |
7672ae20 AJ |
71 | /* The compiler cannot figure out that these are set, initialize |
72 | them to avoid warnings. */ | |
73 | len = 0; | |
74 | soffset = 0; | |
75 | roffset = 0; | |
76 | ||
dfb55fdc TK |
77 | size = GFC_DESCRIPTOR_SIZE(array); |
78 | ||
6de9cd9a DN |
79 | if (pwhich) |
80 | which = *pwhich - 1; | |
81 | else | |
82 | which = 0; | |
83 | ||
6de9cd9a DN |
84 | extent[0] = 1; |
85 | count[0] = 0; | |
0e6d033b | 86 | |
16bff921 | 87 | arraysize = size0 ((array_t *) array); |
21d1335b | 88 | if (ret->base_addr == NULL) |
0e6d033b TK |
89 | { |
90 | int i; | |
91 | ||
efd4dc1a | 92 | ret->offset = 0; |
0e6d033b TK |
93 | ret->dtype = array->dtype; |
94 | for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++) | |
95 | { | |
dfb55fdc TK |
96 | index_type ub, str; |
97 | ||
98 | ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1; | |
0e6d033b TK |
99 | |
100 | if (i == 0) | |
dfb55fdc | 101 | str = 1; |
0e6d033b | 102 | else |
dfb55fdc TK |
103 | str = GFC_DESCRIPTOR_EXTENT(ret,i-1) |
104 | * GFC_DESCRIPTOR_STRIDE(ret,i-1); | |
105 | ||
106 | GFC_DIMENSION_SET(ret->dim[i], 0, ub, str); | |
107 | ||
0e6d033b | 108 | } |
92e6f3a4 JB |
109 | /* xmallocarray allocates a single byte for zero size. */ |
110 | ret->base_addr = xmallocarray (arraysize, size); | |
16bff921 | 111 | |
0e6d033b | 112 | } |
16bff921 | 113 | else if (unlikely (compile_options.bounds_check)) |
c44109aa | 114 | { |
16bff921 TK |
115 | bounds_equal_extents ((array_t *) ret, (array_t *) array, |
116 | "return value", "EOSHIFT"); | |
c44109aa | 117 | } |
0e6d033b | 118 | |
16bff921 TK |
119 | if (unlikely (compile_options.bounds_check)) |
120 | { | |
121 | bounds_reduced_extents ((array_t *) h, (array_t *) array, which, | |
122 | "SHIFT argument", "EOSHIFT"); | |
123 | } | |
124 | ||
125 | if (arraysize == 0) | |
126 | return; | |
127 | ||
6de9cd9a DN |
128 | n = 0; |
129 | for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++) | |
130 | { | |
131 | if (dim == which) | |
132 | { | |
dfb55fdc | 133 | roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); |
6de9cd9a DN |
134 | if (roffset == 0) |
135 | roffset = size; | |
dfb55fdc | 136 | soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); |
6de9cd9a DN |
137 | if (soffset == 0) |
138 | soffset = size; | |
dfb55fdc | 139 | len = GFC_DESCRIPTOR_EXTENT(array,dim); |
6de9cd9a DN |
140 | } |
141 | else | |
142 | { | |
143 | count[n] = 0; | |
dfb55fdc TK |
144 | extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim); |
145 | rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); | |
146 | sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); | |
6de9cd9a | 147 | |
dfb55fdc | 148 | hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n); |
6de9cd9a DN |
149 | n++; |
150 | } | |
151 | } | |
152 | if (sstride[0] == 0) | |
153 | sstride[0] = size; | |
154 | if (rstride[0] == 0) | |
155 | rstride[0] = size; | |
156 | if (hstride[0] == 0) | |
157 | hstride[0] = 1; | |
158 | ||
159 | dim = GFC_DESCRIPTOR_RANK (array); | |
160 | rstride0 = rstride[0]; | |
161 | sstride0 = sstride[0]; | |
162 | hstride0 = hstride[0]; | |
21d1335b TB |
163 | rptr = ret->base_addr; |
164 | sptr = array->base_addr; | |
165 | hptr = h->base_addr; | |
6de9cd9a DN |
166 | |
167 | while (rptr) | |
168 | { | |
adea5e16 | 169 | /* Do the shift for this dimension. */ |
6de9cd9a | 170 | sh = *hptr; |
47b3a403 TK |
171 | if (( sh >= 0 ? sh : -sh ) > len) |
172 | { | |
173 | delta = len; | |
174 | sh = len; | |
175 | } | |
176 | else | |
177 | delta = (sh >= 0) ? sh: -sh; | |
178 | ||
6de9cd9a DN |
179 | if (sh > 0) |
180 | { | |
181 | src = &sptr[delta * soffset]; | |
182 | dest = rptr; | |
183 | } | |
184 | else | |
185 | { | |
186 | src = sptr; | |
187 | dest = &rptr[delta * roffset]; | |
188 | } | |
189 | for (n = 0; n < len - delta; n++) | |
190 | { | |
191 | memcpy (dest, src, size); | |
192 | dest += roffset; | |
193 | src += soffset; | |
194 | } | |
195 | if (sh < 0) | |
196 | dest = rptr; | |
197 | n = delta; | |
198 | ||
7823229b RS |
199 | if (pbound) |
200 | while (n--) | |
201 | { | |
202 | memcpy (dest, pbound, size); | |
203 | dest += roffset; | |
204 | } | |
205 | else | |
206 | while (n--) | |
207 | { | |
691da334 FXC |
208 | index_type i; |
209 | ||
210 | if (filler_len == 1) | |
211 | memset (dest, filler[0], size); | |
212 | else | |
213 | for (i = 0; i < size; i += filler_len) | |
214 | memcpy (&dest[i], filler, filler_len); | |
215 | ||
7823229b RS |
216 | dest += roffset; |
217 | } | |
6de9cd9a DN |
218 | |
219 | /* Advance to the next section. */ | |
220 | rptr += rstride0; | |
221 | sptr += sstride0; | |
222 | hptr += hstride0; | |
223 | count[0]++; | |
224 | n = 0; | |
225 | while (count[n] == extent[n]) | |
226 | { | |
227 | /* When we get to the end of a dimension, reset it and increment | |
228 | the next dimension. */ | |
229 | count[n] = 0; | |
230 | /* We could precalculate these products, but this is a less | |
8b6dba81 | 231 | frequently used path so probably not worth it. */ |
6de9cd9a DN |
232 | rptr -= rstride[n] * extent[n]; |
233 | sptr -= sstride[n] * extent[n]; | |
234 | hptr -= hstride[n] * extent[n]; | |
235 | n++; | |
236 | if (n >= dim - 1) | |
237 | { | |
238 | /* Break out of the loop. */ | |
239 | rptr = NULL; | |
240 | break; | |
241 | } | |
242 | else | |
243 | { | |
244 | count[n]++; | |
245 | rptr += rstride[n]; | |
246 | sptr += sstride[n]; | |
247 | hptr += hstride[n]; | |
248 | } | |
249 | } | |
250 | } | |
251 | } | |
7823229b | 252 | |
adea5e16 | 253 | void eoshift1_'atype_kind` (gfc_array_char * const restrict, |
64acfd99 | 254 | const gfc_array_char * const restrict, |
adea5e16 TK |
255 | const 'atype` * const restrict, const char * const restrict, |
256 | const 'atype_name` * const restrict); | |
257 | export_proto(eoshift1_'atype_kind`); | |
7823229b RS |
258 | |
259 | void | |
adea5e16 | 260 | eoshift1_'atype_kind` (gfc_array_char * const restrict ret, |
64acfd99 | 261 | const gfc_array_char * const restrict array, |
adea5e16 | 262 | const 'atype` * const restrict h, |
64acfd99 | 263 | const char * const restrict pbound, |
adea5e16 | 264 | const 'atype_name` * const restrict pwhich) |
7823229b | 265 | { |
dfb55fdc | 266 | eoshift1 (ret, array, h, pbound, pwhich, "\0", 1); |
7823229b RS |
267 | } |
268 | ||
691da334 | 269 | |
adea5e16 | 270 | void eoshift1_'atype_kind`_char (gfc_array_char * const restrict, |
64acfd99 JB |
271 | GFC_INTEGER_4, |
272 | const gfc_array_char * const restrict, | |
adea5e16 | 273 | const 'atype` * const restrict, |
64acfd99 | 274 | const char * const restrict, |
adea5e16 | 275 | const 'atype_name` * const restrict, |
64acfd99 | 276 | GFC_INTEGER_4, GFC_INTEGER_4); |
adea5e16 | 277 | export_proto(eoshift1_'atype_kind`_char); |
7823229b RS |
278 | |
279 | void | |
adea5e16 | 280 | eoshift1_'atype_kind`_char (gfc_array_char * const restrict ret, |
64acfd99 JB |
281 | GFC_INTEGER_4 ret_length __attribute__((unused)), |
282 | const gfc_array_char * const restrict array, | |
adea5e16 | 283 | const 'atype` * const restrict h, |
64acfd99 | 284 | const char * const restrict pbound, |
adea5e16 | 285 | const 'atype_name` * const restrict pwhich, |
dfb55fdc | 286 | GFC_INTEGER_4 array_length __attribute__((unused)), |
64acfd99 | 287 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
7823229b | 288 | { |
dfb55fdc | 289 | eoshift1 (ret, array, h, pbound, pwhich, " ", 1); |
691da334 FXC |
290 | } |
291 | ||
292 | ||
293 | void eoshift1_'atype_kind`_char4 (gfc_array_char * const restrict, | |
294 | GFC_INTEGER_4, | |
295 | const gfc_array_char * const restrict, | |
296 | const 'atype` * const restrict, | |
297 | const char * const restrict, | |
298 | const 'atype_name` * const restrict, | |
299 | GFC_INTEGER_4, GFC_INTEGER_4); | |
300 | export_proto(eoshift1_'atype_kind`_char4); | |
301 | ||
302 | void | |
303 | eoshift1_'atype_kind`_char4 (gfc_array_char * const restrict ret, | |
304 | GFC_INTEGER_4 ret_length __attribute__((unused)), | |
305 | const gfc_array_char * const restrict array, | |
306 | const 'atype` * const restrict h, | |
307 | const char * const restrict pbound, | |
308 | const 'atype_name` * const restrict pwhich, | |
dfb55fdc | 309 | GFC_INTEGER_4 array_length __attribute__((unused)), |
691da334 FXC |
310 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
311 | { | |
312 | static const gfc_char4_t space = (unsigned char) ''` ''`; | |
dfb55fdc | 313 | eoshift1 (ret, array, h, pbound, pwhich, |
691da334 | 314 | (const char *) &space, sizeof (gfc_char4_t)); |
7823229b | 315 | } |
644cb69f | 316 | |
adea5e16 | 317 | #endif' |