1 /* Generic helper function for repacking arrays.
2 Copyright (C) 2003-2017 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"
29 extern void *internal_pack (gfc_array_char
*);
30 export_proto(internal_pack
);
33 internal_pack (gfc_array_char
* source
)
35 index_type count
[GFC_MAX_DIMENSIONS
];
36 index_type extent
[GFC_MAX_DIMENSIONS
];
37 index_type stride
[GFC_MAX_DIMENSIONS
];
49 if (source
->base_addr
== NULL
)
52 type_size
= GFC_DTYPE_TYPE_SIZE(source
);
53 size
= GFC_DESCRIPTOR_SIZE (source
);
56 case GFC_DTYPE_INTEGER_1
:
57 case GFC_DTYPE_LOGICAL_1
:
58 case GFC_DTYPE_DERIVED_1
:
59 return internal_pack_1 ((gfc_array_i1
*) source
);
61 case GFC_DTYPE_INTEGER_2
:
62 case GFC_DTYPE_LOGICAL_2
:
63 return internal_pack_2 ((gfc_array_i2
*) source
);
65 case GFC_DTYPE_INTEGER_4
:
66 case GFC_DTYPE_LOGICAL_4
:
67 return internal_pack_4 ((gfc_array_i4
*) source
);
69 case GFC_DTYPE_INTEGER_8
:
70 case GFC_DTYPE_LOGICAL_8
:
71 return internal_pack_8 ((gfc_array_i8
*) source
);
73 #if defined(HAVE_GFC_INTEGER_16)
74 case GFC_DTYPE_INTEGER_16
:
75 case GFC_DTYPE_LOGICAL_16
:
76 return internal_pack_16 ((gfc_array_i16
*) source
);
78 case GFC_DTYPE_REAL_4
:
79 return internal_pack_r4 ((gfc_array_r4
*) source
);
81 case GFC_DTYPE_REAL_8
:
82 return internal_pack_r8 ((gfc_array_r8
*) source
);
84 /* FIXME: This here is a hack, which will have to be removed when
85 the array descriptor is reworked. Currently, we don't store the
86 kind value for the type, but only the size. Because on targets with
87 __float128, we have sizeof(logn double) == sizeof(__float128),
88 we cannot discriminate here and have to fall back to the generic
89 handling (which is suboptimal). */
90 #if !defined(GFC_REAL_16_IS_FLOAT128)
91 # if defined (HAVE_GFC_REAL_10)
92 case GFC_DTYPE_REAL_10
:
93 return internal_pack_r10 ((gfc_array_r10
*) source
);
96 # if defined (HAVE_GFC_REAL_16)
97 case GFC_DTYPE_REAL_16
:
98 return internal_pack_r16 ((gfc_array_r16
*) source
);
102 case GFC_DTYPE_COMPLEX_4
:
103 return internal_pack_c4 ((gfc_array_c4
*) source
);
105 case GFC_DTYPE_COMPLEX_8
:
106 return internal_pack_c8 ((gfc_array_c8
*) source
);
108 /* FIXME: This here is a hack, which will have to be removed when
109 the array descriptor is reworked. Currently, we don't store the
110 kind value for the type, but only the size. Because on targets with
111 __float128, we have sizeof(logn double) == sizeof(__float128),
112 we cannot discriminate here and have to fall back to the generic
113 handling (which is suboptimal). */
114 #if !defined(GFC_REAL_16_IS_FLOAT128)
115 # if defined (HAVE_GFC_COMPLEX_10)
116 case GFC_DTYPE_COMPLEX_10
:
117 return internal_pack_c10 ((gfc_array_c10
*) source
);
120 # if defined (HAVE_GFC_COMPLEX_16)
121 case GFC_DTYPE_COMPLEX_16
:
122 return internal_pack_c16 ((gfc_array_c16
*) source
);
126 case GFC_DTYPE_DERIVED_2
:
127 if (GFC_UNALIGNED_2(source
->base_addr
))
130 return internal_pack_2 ((gfc_array_i2
*) source
);
132 case GFC_DTYPE_DERIVED_4
:
133 if (GFC_UNALIGNED_4(source
->base_addr
))
136 return internal_pack_4 ((gfc_array_i4
*) source
);
138 case GFC_DTYPE_DERIVED_8
:
139 if (GFC_UNALIGNED_8(source
->base_addr
))
142 return internal_pack_8 ((gfc_array_i8
*) source
);
144 #ifdef HAVE_GFC_INTEGER_16
145 case GFC_DTYPE_DERIVED_16
:
146 if (GFC_UNALIGNED_16(source
->base_addr
))
149 return internal_pack_16 ((gfc_array_i16
*) source
);
156 dim
= GFC_DESCRIPTOR_RANK (source
);
159 for (n
= 0; n
< dim
; n
++)
162 stride
[n
] = GFC_DESCRIPTOR_STRIDE(source
,n
);
163 extent
[n
] = GFC_DESCRIPTOR_EXTENT(source
,n
);
171 if (ssize
!= stride
[n
])
178 return source
->base_addr
;
180 /* Allocate storage for the destination. */
181 destptr
= xmallocarray (ssize
, size
);
182 dest
= (char *)destptr
;
183 src
= source
->base_addr
;
184 stride0
= stride
[0] * size
;
189 memcpy(dest
, src
, size
);
190 /* Advance to the next element. */
194 /* Advance to the next source element. */
196 while (count
[n
] == extent
[n
])
198 /* When we get to the end of a dimension, reset it and increment
199 the next dimension. */
201 /* We could precalculate these products, but this is a less
202 frequently used path so probably not worth it. */
203 src
-= stride
[n
] * extent
[n
] * size
;
213 src
+= stride
[n
] * size
;