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6de9cd9a | 1 | /* Implementation of the EOSHIFT intrinsic |
f0bcf628 | 2 | Copyright (C) 2002-2014 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> | |
29 | #include <string.h> | |
36ae8a61 | 30 | |
6de9cd9a | 31 | |
644cb69f FXC |
32 | #if defined (HAVE_GFC_INTEGER_4) |
33 | ||
7823229b | 34 | static void |
64acfd99 JB |
35 | eoshift1 (gfc_array_char * const restrict ret, |
36 | const gfc_array_char * const restrict array, | |
37 | const gfc_array_i4 * const restrict h, | |
38 | const char * const restrict pbound, | |
39 | const GFC_INTEGER_4 * const restrict pwhich, | |
dfb55fdc | 40 | const char * filler, index_type filler_len) |
6de9cd9a DN |
41 | { |
42 | /* r.* indicates the return array. */ | |
e33e218b | 43 | index_type rstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
44 | index_type rstride0; |
45 | index_type roffset; | |
46 | char *rptr; | |
5863aacf | 47 | char * restrict dest; |
6de9cd9a | 48 | /* s.* indicates the source array. */ |
e33e218b | 49 | index_type sstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
50 | index_type sstride0; |
51 | index_type soffset; | |
52 | const char *sptr; | |
53 | const char *src; | |
54 | /* h.* indicates the shift array. */ | |
e33e218b | 55 | index_type hstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
56 | index_type hstride0; |
57 | const GFC_INTEGER_4 *hptr; | |
58 | ||
e33e218b TK |
59 | index_type count[GFC_MAX_DIMENSIONS]; |
60 | index_type extent[GFC_MAX_DIMENSIONS]; | |
6de9cd9a | 61 | index_type dim; |
6de9cd9a DN |
62 | index_type len; |
63 | index_type n; | |
dfb55fdc | 64 | index_type size; |
16bff921 | 65 | index_type arraysize; |
6de9cd9a DN |
66 | int which; |
67 | GFC_INTEGER_4 sh; | |
68 | GFC_INTEGER_4 delta; | |
69 | ||
7672ae20 AJ |
70 | /* The compiler cannot figure out that these are set, initialize |
71 | them to avoid warnings. */ | |
72 | len = 0; | |
73 | soffset = 0; | |
74 | roffset = 0; | |
75 | ||
dfb55fdc TK |
76 | size = GFC_DESCRIPTOR_SIZE(array); |
77 | ||
6de9cd9a DN |
78 | if (pwhich) |
79 | which = *pwhich - 1; | |
80 | else | |
81 | which = 0; | |
82 | ||
6de9cd9a DN |
83 | extent[0] = 1; |
84 | count[0] = 0; | |
0e6d033b | 85 | |
16bff921 | 86 | arraysize = size0 ((array_t *) array); |
21d1335b | 87 | if (ret->base_addr == NULL) |
0e6d033b TK |
88 | { |
89 | int i; | |
90 | ||
efd4dc1a | 91 | ret->offset = 0; |
0e6d033b TK |
92 | ret->dtype = array->dtype; |
93 | for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++) | |
94 | { | |
dfb55fdc TK |
95 | index_type ub, str; |
96 | ||
97 | ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1; | |
0e6d033b TK |
98 | |
99 | if (i == 0) | |
dfb55fdc | 100 | str = 1; |
0e6d033b | 101 | else |
dfb55fdc TK |
102 | str = GFC_DESCRIPTOR_EXTENT(ret,i-1) |
103 | * GFC_DESCRIPTOR_STRIDE(ret,i-1); | |
104 | ||
105 | GFC_DIMENSION_SET(ret->dim[i], 0, ub, str); | |
106 | ||
0e6d033b | 107 | } |
1a0fd3d3 JB |
108 | /* xmalloc allocates a single byte for zero size. */ |
109 | ret->base_addr = xmalloc (size * arraysize); | |
16bff921 | 110 | |
0e6d033b | 111 | } |
16bff921 | 112 | else if (unlikely (compile_options.bounds_check)) |
c44109aa | 113 | { |
16bff921 TK |
114 | bounds_equal_extents ((array_t *) ret, (array_t *) array, |
115 | "return value", "EOSHIFT"); | |
c44109aa | 116 | } |
0e6d033b | 117 | |
16bff921 TK |
118 | if (unlikely (compile_options.bounds_check)) |
119 | { | |
120 | bounds_reduced_extents ((array_t *) h, (array_t *) array, which, | |
121 | "SHIFT argument", "EOSHIFT"); | |
122 | } | |
123 | ||
124 | if (arraysize == 0) | |
125 | return; | |
126 | ||
6de9cd9a DN |
127 | n = 0; |
128 | for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++) | |
129 | { | |
130 | if (dim == which) | |
131 | { | |
dfb55fdc | 132 | roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); |
6de9cd9a DN |
133 | if (roffset == 0) |
134 | roffset = size; | |
dfb55fdc | 135 | soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); |
6de9cd9a DN |
136 | if (soffset == 0) |
137 | soffset = size; | |
dfb55fdc | 138 | len = GFC_DESCRIPTOR_EXTENT(array,dim); |
6de9cd9a DN |
139 | } |
140 | else | |
141 | { | |
142 | count[n] = 0; | |
dfb55fdc TK |
143 | extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim); |
144 | rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); | |
145 | sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); | |
6de9cd9a | 146 | |
dfb55fdc | 147 | hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n); |
6de9cd9a DN |
148 | n++; |
149 | } | |
150 | } | |
151 | if (sstride[0] == 0) | |
152 | sstride[0] = size; | |
153 | if (rstride[0] == 0) | |
154 | rstride[0] = size; | |
155 | if (hstride[0] == 0) | |
156 | hstride[0] = 1; | |
157 | ||
158 | dim = GFC_DESCRIPTOR_RANK (array); | |
159 | rstride0 = rstride[0]; | |
160 | sstride0 = sstride[0]; | |
161 | hstride0 = hstride[0]; | |
21d1335b TB |
162 | rptr = ret->base_addr; |
163 | sptr = array->base_addr; | |
164 | hptr = h->base_addr; | |
6de9cd9a DN |
165 | |
166 | while (rptr) | |
167 | { | |
168 | /* Do the shift for this dimension. */ | |
169 | sh = *hptr; | |
47b3a403 TK |
170 | if (( sh >= 0 ? sh : -sh ) > len) |
171 | { | |
172 | delta = len; | |
173 | sh = len; | |
174 | } | |
175 | else | |
176 | delta = (sh >= 0) ? sh: -sh; | |
177 | ||
6de9cd9a DN |
178 | if (sh > 0) |
179 | { | |
180 | src = &sptr[delta * soffset]; | |
181 | dest = rptr; | |
182 | } | |
183 | else | |
184 | { | |
185 | src = sptr; | |
186 | dest = &rptr[delta * roffset]; | |
187 | } | |
188 | for (n = 0; n < len - delta; n++) | |
189 | { | |
190 | memcpy (dest, src, size); | |
191 | dest += roffset; | |
192 | src += soffset; | |
193 | } | |
194 | if (sh < 0) | |
195 | dest = rptr; | |
196 | n = delta; | |
197 | ||
7823229b RS |
198 | if (pbound) |
199 | while (n--) | |
200 | { | |
201 | memcpy (dest, pbound, size); | |
202 | dest += roffset; | |
203 | } | |
204 | else | |
205 | while (n--) | |
206 | { | |
691da334 FXC |
207 | index_type i; |
208 | ||
209 | if (filler_len == 1) | |
210 | memset (dest, filler[0], size); | |
211 | else | |
212 | for (i = 0; i < size; i += filler_len) | |
213 | memcpy (&dest[i], filler, filler_len); | |
214 | ||
7823229b RS |
215 | dest += roffset; |
216 | } | |
6de9cd9a DN |
217 | |
218 | /* Advance to the next section. */ | |
219 | rptr += rstride0; | |
220 | sptr += sstride0; | |
221 | hptr += hstride0; | |
222 | count[0]++; | |
223 | n = 0; | |
224 | while (count[n] == extent[n]) | |
225 | { | |
226 | /* When we get to the end of a dimension, reset it and increment | |
227 | the next dimension. */ | |
228 | count[n] = 0; | |
229 | /* We could precalculate these products, but this is a less | |
5d7adf7a | 230 | frequently used path so probably not worth it. */ |
6de9cd9a DN |
231 | rptr -= rstride[n] * extent[n]; |
232 | sptr -= sstride[n] * extent[n]; | |
233 | hptr -= hstride[n] * extent[n]; | |
234 | n++; | |
235 | if (n >= dim - 1) | |
236 | { | |
237 | /* Break out of the loop. */ | |
238 | rptr = NULL; | |
239 | break; | |
240 | } | |
241 | else | |
242 | { | |
243 | count[n]++; | |
244 | rptr += rstride[n]; | |
245 | sptr += sstride[n]; | |
246 | hptr += hstride[n]; | |
247 | } | |
248 | } | |
249 | } | |
250 | } | |
7823229b | 251 | |
64acfd99 JB |
252 | void eoshift1_4 (gfc_array_char * const restrict, |
253 | const gfc_array_char * const restrict, | |
254 | const gfc_array_i4 * const restrict, const char * const restrict, | |
255 | const GFC_INTEGER_4 * const restrict); | |
7823229b RS |
256 | export_proto(eoshift1_4); |
257 | ||
258 | void | |
64acfd99 JB |
259 | eoshift1_4 (gfc_array_char * const restrict ret, |
260 | const gfc_array_char * const restrict array, | |
261 | const gfc_array_i4 * const restrict h, | |
262 | const char * const restrict pbound, | |
263 | const GFC_INTEGER_4 * const restrict pwhich) | |
7823229b | 264 | { |
dfb55fdc | 265 | eoshift1 (ret, array, h, pbound, pwhich, "\0", 1); |
7823229b RS |
266 | } |
267 | ||
691da334 | 268 | |
64acfd99 JB |
269 | void eoshift1_4_char (gfc_array_char * const restrict, |
270 | GFC_INTEGER_4, | |
271 | const gfc_array_char * const restrict, | |
272 | const gfc_array_i4 * const restrict, | |
273 | const char * const restrict, | |
274 | const GFC_INTEGER_4 * const restrict, | |
275 | GFC_INTEGER_4, GFC_INTEGER_4); | |
7823229b RS |
276 | export_proto(eoshift1_4_char); |
277 | ||
278 | void | |
64acfd99 JB |
279 | eoshift1_4_char (gfc_array_char * const restrict ret, |
280 | GFC_INTEGER_4 ret_length __attribute__((unused)), | |
281 | const gfc_array_char * const restrict array, | |
282 | const gfc_array_i4 * const restrict h, | |
283 | const char * const restrict pbound, | |
284 | const GFC_INTEGER_4 * const restrict pwhich, | |
dfb55fdc | 285 | GFC_INTEGER_4 array_length __attribute__((unused)), |
64acfd99 | 286 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
7823229b | 287 | { |
dfb55fdc | 288 | eoshift1 (ret, array, h, pbound, pwhich, " ", 1); |
691da334 FXC |
289 | } |
290 | ||
291 | ||
292 | void eoshift1_4_char4 (gfc_array_char * const restrict, | |
293 | GFC_INTEGER_4, | |
294 | const gfc_array_char * const restrict, | |
295 | const gfc_array_i4 * const restrict, | |
296 | const char * const restrict, | |
297 | const GFC_INTEGER_4 * const restrict, | |
298 | GFC_INTEGER_4, GFC_INTEGER_4); | |
299 | export_proto(eoshift1_4_char4); | |
300 | ||
301 | void | |
302 | eoshift1_4_char4 (gfc_array_char * const restrict ret, | |
303 | GFC_INTEGER_4 ret_length __attribute__((unused)), | |
304 | const gfc_array_char * const restrict array, | |
305 | const gfc_array_i4 * const restrict h, | |
306 | const char * const restrict pbound, | |
307 | const GFC_INTEGER_4 * const restrict pwhich, | |
dfb55fdc | 308 | GFC_INTEGER_4 array_length __attribute__((unused)), |
691da334 FXC |
309 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
310 | { | |
311 | static const gfc_char4_t space = (unsigned char) ' '; | |
dfb55fdc | 312 | eoshift1 (ret, array, h, pbound, pwhich, |
691da334 | 313 | (const char *) &space, sizeof (gfc_char4_t)); |
7823229b | 314 | } |
644cb69f FXC |
315 | |
316 | #endif |