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/****************************************************************************
* *
* GNAT COMPILER COMPONENTS *
* *
* T A R G T Y P S *
* *
* Body *
* *
* Copyright (C) 1992-2009, Free Software Foundation, Inc. *
* *
* GNAT is free software; you can redistribute it and/or modify it under *
* terms of the GNU General Public License as published by the Free Soft- *
* ware Foundation; either version 3, or (at your option) any later ver- *
* sion. GNAT is distributed in the hope that it will be useful, but WITH- *
* OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
* for more details. You should have received a copy of the GNU General *
* Public License distributed with GNAT; see file COPYING3. If not see *
* <http://www.gnu.org/licenses/>. *
* *
* GNAT was originally developed by the GNAT team at New York University. *
* Extensive contributions were provided by Ada Core Technologies Inc. *
* *
****************************************************************************/
/* Functions for retrieving target types. See Ada package Get_Targ */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "real.h"
#include "rtl.h"
#include "ada.h"
#include "types.h"
#include "atree.h"
#include "elists.h"
#include "namet.h"
#include "nlists.h"
#include "snames.h"
#include "stringt.h"
#include "uintp.h"
#include "urealp.h"
#include "fe.h"
#include "sinfo.h"
#include "einfo.h"
#include "ada-tree.h"
#include "gigi.h"
/* If we don't have a specific size for Ada's equivalent of `long', use that
of C. */
#ifndef ADA_LONG_TYPE_SIZE
#define ADA_LONG_TYPE_SIZE LONG_TYPE_SIZE
#endif
#ifndef WIDEST_HARDWARE_FP_SIZE
#define WIDEST_HARDWARE_FP_SIZE LONG_DOUBLE_TYPE_SIZE
#endif
/* The following provide a functional interface for the front end Ada code
to determine the sizes that are used for various C types. */
Pos
get_target_bits_per_unit (void)
{
return BITS_PER_UNIT;
}
Pos
get_target_bits_per_word (void)
{
return BITS_PER_WORD;
}
Pos
get_target_char_size (void)
{
return CHAR_TYPE_SIZE;
}
Pos
get_target_wchar_t_size (void)
{
/* We never want wide characters less than "short" in Ada. */
return MAX (SHORT_TYPE_SIZE, WCHAR_TYPE_SIZE);
}
Pos
get_target_short_size (void)
{
return SHORT_TYPE_SIZE;
}
Pos
get_target_int_size (void)
{
return INT_TYPE_SIZE;
}
Pos
get_target_long_size (void)
{
return ADA_LONG_TYPE_SIZE;
}
Pos
get_target_long_long_size (void)
{
return LONG_LONG_TYPE_SIZE;
}
Pos
get_target_float_size (void)
{
return fp_prec_to_size (FLOAT_TYPE_SIZE);
}
Pos
get_target_double_size (void)
{
return fp_prec_to_size (DOUBLE_TYPE_SIZE);
}
Pos
get_target_long_double_size (void)
{
return fp_prec_to_size (WIDEST_HARDWARE_FP_SIZE);
}
Pos
get_target_pointer_size (void)
{
return POINTER_SIZE;
}
/* Alignment related values, mapped to attributes for functional and
documentation purposes. */
/* Standard'Maximum_Default_Alignment. Maximum alignment that the compiler
might choose by default for a type or object.
Stricter alignment requests trigger gigi's aligning_type circuitry for
stack objects or objects allocated by the default allocator. */
Pos
get_target_maximum_default_alignment (void)
{
return BIGGEST_ALIGNMENT / BITS_PER_UNIT;
}
/* Standard'Default_Allocator_Alignment. Alignment guaranteed to be honored
by the default allocator (System.Memory.Alloc or malloc if we have no
run-time library at hand).
Stricter alignment requests trigger gigi's aligning_type circuitry for
objects allocated by the default allocator. */
/* ??? Need a way to get info about __gnat_malloc from here (whether it is
handy and what alignment it honors). In the meantime, resort to malloc
considerations only. */
Pos
get_target_default_allocator_alignment (void)
{
return MALLOC_ABI_ALIGNMENT / BITS_PER_UNIT;
}
/* Standard'Maximum_Allowed_Alignment. Maximum alignment that we may
accept for any type or object. */
#ifndef MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
#endif
Pos
get_target_maximum_allowed_alignment (void)
{
return MAX_OFILE_ALIGNMENT / BITS_PER_UNIT;
}
/* Standard'Maximum_Alignment. The single attribute initially made
available, now a synonym of Standard'Maximum_Default_Alignment. */
Pos
get_target_maximum_alignment (void)
{
return get_target_maximum_default_alignment ();
}
#ifndef FLOAT_WORDS_BIG_ENDIAN
#define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
#endif
Nat
get_float_words_be (void)
{
return FLOAT_WORDS_BIG_ENDIAN;
}
Nat
get_words_be (void)
{
return WORDS_BIG_ENDIAN;
}
Nat
get_bytes_be (void)
{
return BYTES_BIG_ENDIAN;
}
Nat
get_bits_be (void)
{
return BITS_BIG_ENDIAN;
}
Nat
get_strict_alignment (void)
{
return STRICT_ALIGNMENT;
}
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