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/* go-backend.c -- Go frontend interface to gcc backend.
Copyright (C) 2010 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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, or (at your option) any later
version.
GCC 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.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "tm.h"
#include "tm_p.h"
#include "go-c.h"
/* This file holds all the cases where the Go frontend needs
information from gcc's backend. */
/* Return the alignment in bytes of a value of type T. */
unsigned int
go_type_alignment (tree t)
{
return TYPE_ALIGN_UNIT (t);
}
/* Return the alignment in bytes of a struct field of type T. */
unsigned int
go_field_alignment (tree t)
{
unsigned int v;
v = TYPE_ALIGN (t);
#ifdef BIGGEST_FIELD_ALIGNMENT
if (v > BIGGEST_FIELD_ALIGNMENT)
v = BIGGEST_FIELD_ALIGNMENT;
#endif
#ifdef ADJUST_FIELD_ALIGN
{
tree field ATTRIBUTE_UNUSED;
field = build_decl (UNKNOWN_LOCATION, FIELD_DECL, NULL, t);
v = ADJUST_FIELD_ALIGN (field, v);
}
#endif
return v / BITS_PER_UNIT;
}
/* Return the size and alignment of a trampoline. */
void
go_trampoline_info (unsigned int *size, unsigned int *alignment)
{
*size = TRAMPOLINE_SIZE;
*alignment = TRAMPOLINE_ALIGNMENT;
}
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