219 lines
6.1 KiB
C
219 lines
6.1 KiB
C
/* Generic helper function for repacking arrays.
|
|
Copyright 2003, 2004, 2005, 2007, 2009, 2010
|
|
Free Software Foundation, Inc.
|
|
Contributed by Paul Brook <paul@nowt.org>
|
|
|
|
This file is part of the GNU Fortran 95 runtime library (libgfortran).
|
|
|
|
Libgfortran is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 3 of the License, or (at your option) any later version.
|
|
|
|
Libgfortran is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "libgfortran.h"
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
|
|
extern void *internal_pack (gfc_array_char *);
|
|
export_proto(internal_pack);
|
|
|
|
void *
|
|
internal_pack (gfc_array_char * source)
|
|
{
|
|
index_type count[GFC_MAX_DIMENSIONS];
|
|
index_type extent[GFC_MAX_DIMENSIONS];
|
|
index_type stride[GFC_MAX_DIMENSIONS];
|
|
index_type stride0;
|
|
index_type dim;
|
|
index_type ssize;
|
|
const char *src;
|
|
char *dest;
|
|
void *destptr;
|
|
int n;
|
|
int packed;
|
|
index_type size;
|
|
index_type type_size;
|
|
|
|
type_size = GFC_DTYPE_TYPE_SIZE(source);
|
|
size = GFC_DESCRIPTOR_SIZE (source);
|
|
switch (type_size)
|
|
{
|
|
case GFC_DTYPE_INTEGER_1:
|
|
case GFC_DTYPE_LOGICAL_1:
|
|
case GFC_DTYPE_DERIVED_1:
|
|
return internal_pack_1 ((gfc_array_i1 *) source);
|
|
|
|
case GFC_DTYPE_INTEGER_2:
|
|
case GFC_DTYPE_LOGICAL_2:
|
|
return internal_pack_2 ((gfc_array_i2 *) source);
|
|
|
|
case GFC_DTYPE_INTEGER_4:
|
|
case GFC_DTYPE_LOGICAL_4:
|
|
return internal_pack_4 ((gfc_array_i4 *) source);
|
|
|
|
case GFC_DTYPE_INTEGER_8:
|
|
case GFC_DTYPE_LOGICAL_8:
|
|
return internal_pack_8 ((gfc_array_i8 *) source);
|
|
|
|
#if defined(HAVE_GFC_INTEGER_16)
|
|
case GFC_DTYPE_INTEGER_16:
|
|
case GFC_DTYPE_LOGICAL_16:
|
|
return internal_pack_16 ((gfc_array_i16 *) source);
|
|
#endif
|
|
case GFC_DTYPE_REAL_4:
|
|
return internal_pack_r4 ((gfc_array_r4 *) source);
|
|
|
|
case GFC_DTYPE_REAL_8:
|
|
return internal_pack_r8 ((gfc_array_r8 *) source);
|
|
|
|
/* FIXME: This here is a hack, which will have to be removed when
|
|
the array descriptor is reworked. Currently, we don't store the
|
|
kind value for the type, but only the size. Because on targets with
|
|
__float128, we have sizeof(logn double) == sizeof(__float128),
|
|
we cannot discriminate here and have to fall back to the generic
|
|
handling (which is suboptimal). */
|
|
#if !defined(GFC_REAL_16_IS_FLOAT128)
|
|
# if defined (HAVE_GFC_REAL_10)
|
|
case GFC_DTYPE_REAL_10:
|
|
return internal_pack_r10 ((gfc_array_r10 *) source);
|
|
# endif
|
|
|
|
# if defined (HAVE_GFC_REAL_16)
|
|
case GFC_DTYPE_REAL_16:
|
|
return internal_pack_r16 ((gfc_array_r16 *) source);
|
|
# endif
|
|
#endif
|
|
|
|
case GFC_DTYPE_COMPLEX_4:
|
|
return internal_pack_c4 ((gfc_array_c4 *) source);
|
|
|
|
case GFC_DTYPE_COMPLEX_8:
|
|
return internal_pack_c8 ((gfc_array_c8 *) source);
|
|
|
|
/* FIXME: This here is a hack, which will have to be removed when
|
|
the array descriptor is reworked. Currently, we don't store the
|
|
kind value for the type, but only the size. Because on targets with
|
|
__float128, we have sizeof(logn double) == sizeof(__float128),
|
|
we cannot discriminate here and have to fall back to the generic
|
|
handling (which is suboptimal). */
|
|
#if !defined(GFC_REAL_16_IS_FLOAT128)
|
|
# if defined (HAVE_GFC_COMPLEX_10)
|
|
case GFC_DTYPE_COMPLEX_10:
|
|
return internal_pack_c10 ((gfc_array_c10 *) source);
|
|
# endif
|
|
|
|
# if defined (HAVE_GFC_COMPLEX_16)
|
|
case GFC_DTYPE_COMPLEX_16:
|
|
return internal_pack_c16 ((gfc_array_c16 *) source);
|
|
# endif
|
|
#endif
|
|
|
|
case GFC_DTYPE_DERIVED_2:
|
|
if (GFC_UNALIGNED_2(source->data))
|
|
break;
|
|
else
|
|
return internal_pack_2 ((gfc_array_i2 *) source);
|
|
|
|
case GFC_DTYPE_DERIVED_4:
|
|
if (GFC_UNALIGNED_4(source->data))
|
|
break;
|
|
else
|
|
return internal_pack_4 ((gfc_array_i4 *) source);
|
|
|
|
case GFC_DTYPE_DERIVED_8:
|
|
if (GFC_UNALIGNED_8(source->data))
|
|
break;
|
|
else
|
|
return internal_pack_8 ((gfc_array_i8 *) source);
|
|
|
|
#ifdef HAVE_GFC_INTEGER_16
|
|
case GFC_DTYPE_DERIVED_16:
|
|
if (GFC_UNALIGNED_16(source->data))
|
|
break;
|
|
else
|
|
return internal_pack_16 ((gfc_array_i16 *) source);
|
|
#endif
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
dim = GFC_DESCRIPTOR_RANK (source);
|
|
ssize = 1;
|
|
packed = 1;
|
|
for (n = 0; n < dim; n++)
|
|
{
|
|
count[n] = 0;
|
|
stride[n] = GFC_DESCRIPTOR_STRIDE(source,n);
|
|
extent[n] = GFC_DESCRIPTOR_EXTENT(source,n);
|
|
if (extent[n] <= 0)
|
|
{
|
|
/* Do nothing. */
|
|
packed = 1;
|
|
break;
|
|
}
|
|
|
|
if (ssize != stride[n])
|
|
packed = 0;
|
|
|
|
ssize *= extent[n];
|
|
}
|
|
|
|
if (packed)
|
|
return source->data;
|
|
|
|
/* Allocate storage for the destination. */
|
|
destptr = internal_malloc_size (ssize * size);
|
|
dest = (char *)destptr;
|
|
src = source->data;
|
|
stride0 = stride[0] * size;
|
|
|
|
while (src)
|
|
{
|
|
/* Copy the data. */
|
|
memcpy(dest, src, size);
|
|
/* Advance to the next element. */
|
|
dest += size;
|
|
src += stride0;
|
|
count[0]++;
|
|
/* Advance to the next source element. */
|
|
n = 0;
|
|
while (count[n] == extent[n])
|
|
{
|
|
/* When we get to the end of a dimension, reset it and increment
|
|
the next dimension. */
|
|
count[n] = 0;
|
|
/* We could precalculate these products, but this is a less
|
|
frequently used path so probably not worth it. */
|
|
src -= stride[n] * extent[n] * size;
|
|
n++;
|
|
if (n == dim)
|
|
{
|
|
src = NULL;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
count[n]++;
|
|
src += stride[n] * size;
|
|
}
|
|
}
|
|
}
|
|
return destptr;
|
|
}
|