1 /* Generic helper function for repacking arrays.
2 Copyright (C) 2003-2013 Free Software Foundation, Inc.
3 Contributed by Paul Brook <paul@nowt.org>
5 This file is part of the GNU Fortran runtime library (libgfortran).
7 Libgfortran is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public
9 License as published by the Free Software Foundation; either
10 version 3 of the License, or (at your option) any later version.
12 Libgfortran 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
15 GNU General Public License for more details.
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.
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/>. */
26 #include "libgfortran.h"
31 extern void *internal_pack (gfc_array_char *);
32 export_proto(internal_pack);
35 internal_pack (gfc_array_char * source)
37 index_type count[GFC_MAX_DIMENSIONS];
38 index_type extent[GFC_MAX_DIMENSIONS];
39 index_type stride[GFC_MAX_DIMENSIONS];
51 if (source->base_addr == NULL)
54 type_size = GFC_DTYPE_TYPE_SIZE(source);
55 size = GFC_DESCRIPTOR_SIZE (source);
58 case GFC_DTYPE_INTEGER_1:
59 case GFC_DTYPE_LOGICAL_1:
60 case GFC_DTYPE_DERIVED_1:
61 return internal_pack_1 ((gfc_array_i1 *) source);
63 case GFC_DTYPE_INTEGER_2:
64 case GFC_DTYPE_LOGICAL_2:
65 return internal_pack_2 ((gfc_array_i2 *) source);
67 case GFC_DTYPE_INTEGER_4:
68 case GFC_DTYPE_LOGICAL_4:
69 return internal_pack_4 ((gfc_array_i4 *) source);
71 case GFC_DTYPE_INTEGER_8:
72 case GFC_DTYPE_LOGICAL_8:
73 return internal_pack_8 ((gfc_array_i8 *) source);
75 #if defined(HAVE_GFC_INTEGER_16)
76 case GFC_DTYPE_INTEGER_16:
77 case GFC_DTYPE_LOGICAL_16:
78 return internal_pack_16 ((gfc_array_i16 *) source);
80 case GFC_DTYPE_REAL_4:
81 return internal_pack_r4 ((gfc_array_r4 *) source);
83 case GFC_DTYPE_REAL_8:
84 return internal_pack_r8 ((gfc_array_r8 *) source);
86 /* FIXME: This here is a hack, which will have to be removed when
87 the array descriptor is reworked. Currently, we don't store the
88 kind value for the type, but only the size. Because on targets with
89 __float128, we have sizeof(logn double) == sizeof(__float128),
90 we cannot discriminate here and have to fall back to the generic
91 handling (which is suboptimal). */
92 #if !defined(GFC_REAL_16_IS_FLOAT128)
93 # if defined (HAVE_GFC_REAL_10)
94 case GFC_DTYPE_REAL_10:
95 return internal_pack_r10 ((gfc_array_r10 *) source);
98 # if defined (HAVE_GFC_REAL_16)
99 case GFC_DTYPE_REAL_16:
100 return internal_pack_r16 ((gfc_array_r16 *) source);
104 case GFC_DTYPE_COMPLEX_4:
105 return internal_pack_c4 ((gfc_array_c4 *) source);
107 case GFC_DTYPE_COMPLEX_8:
108 return internal_pack_c8 ((gfc_array_c8 *) source);
110 /* FIXME: This here is a hack, which will have to be removed when
111 the array descriptor is reworked. Currently, we don't store the
112 kind value for the type, but only the size. Because on targets with
113 __float128, we have sizeof(logn double) == sizeof(__float128),
114 we cannot discriminate here and have to fall back to the generic
115 handling (which is suboptimal). */
116 #if !defined(GFC_REAL_16_IS_FLOAT128)
117 # if defined (HAVE_GFC_COMPLEX_10)
118 case GFC_DTYPE_COMPLEX_10:
119 return internal_pack_c10 ((gfc_array_c10 *) source);
122 # if defined (HAVE_GFC_COMPLEX_16)
123 case GFC_DTYPE_COMPLEX_16:
124 return internal_pack_c16 ((gfc_array_c16 *) source);
128 case GFC_DTYPE_DERIVED_2:
129 if (GFC_UNALIGNED_2(source->base_addr))
132 return internal_pack_2 ((gfc_array_i2 *) source);
134 case GFC_DTYPE_DERIVED_4:
135 if (GFC_UNALIGNED_4(source->base_addr))
138 return internal_pack_4 ((gfc_array_i4 *) source);
140 case GFC_DTYPE_DERIVED_8:
141 if (GFC_UNALIGNED_8(source->base_addr))
144 return internal_pack_8 ((gfc_array_i8 *) source);
146 #ifdef HAVE_GFC_INTEGER_16
147 case GFC_DTYPE_DERIVED_16:
148 if (GFC_UNALIGNED_16(source->base_addr))
151 return internal_pack_16 ((gfc_array_i16 *) source);
158 dim = GFC_DESCRIPTOR_RANK (source);
161 for (n = 0; n < dim; n++)
164 stride[n] = GFC_DESCRIPTOR_STRIDE(source,n);
165 extent[n] = GFC_DESCRIPTOR_EXTENT(source,n);
173 if (ssize != stride[n])
180 return source->base_addr;
182 /* Allocate storage for the destination. */
183 destptr = xmalloc (ssize * size);
184 dest = (char *)destptr;
185 src = source->base_addr;
186 stride0 = stride[0] * size;
191 memcpy(dest, src, size);
192 /* Advance to the next element. */
196 /* Advance to the next source element. */
198 while (count[n] == extent[n])
200 /* When we get to the end of a dimension, reset it and increment
201 the next dimension. */
203 /* We could precalculate these products, but this is a less
204 frequently used path so probably not worth it. */
205 src -= stride[n] * extent[n] * size;
215 src += stride[n] * size;