/* Generic helper function for repacking arrays. Copyright (C) 2003-2014 Free Software Foundation, Inc. Contributed by Paul Brook This file is part of the GNU Fortran 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 . */ #include "libgfortran.h" #include #include #include 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; if (source->base_addr == NULL) return NULL; 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->base_addr)) break; else return internal_pack_2 ((gfc_array_i2 *) source); case GFC_DTYPE_DERIVED_4: if (GFC_UNALIGNED_4(source->base_addr)) break; else return internal_pack_4 ((gfc_array_i4 *) source); case GFC_DTYPE_DERIVED_8: if (GFC_UNALIGNED_8(source->base_addr)) 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->base_addr)) 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->base_addr; /* Allocate storage for the destination. */ destptr = xmalloc (ssize * size); dest = (char *)destptr; src = source->base_addr; 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; }