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/* Default target hook functions.
Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "machmode.h"
#include "rtl.h"
#include "tree.h"
#include "expr.h"
#include "toplev.h"
#include "function.h"
#include "target.h"
#include "tm_p.h"
#include "target-def.h"
bool
default_promote_function_args (fntype)
tree fntype ATTRIBUTE_UNUSED;
{
#ifdef PROMOTE_FUNCTION_ARGS
return true;
#else
return false;
#endif
}
bool
default_promote_function_return (fntype)
tree fntype ATTRIBUTE_UNUSED;
{
#ifdef PROMOTE_FUNCTION_RETURN
return true;
#else
return false;
#endif
}
bool
default_promote_prototypes (fntype)
tree fntype ATTRIBUTE_UNUSED;
{
if (PROMOTE_PROTOTYPES)
return true;
else
return false;
}
rtx
default_struct_value_rtx (tree fntype ATTRIBUTE_UNUSED, int incoming)
{
rtx rv = 0;
if (incoming)
{
#ifdef STRUCT_VALUE_INCOMING
rv = STRUCT_VALUE_INCOMING;
#else
#ifdef STRUCT_VALUE_INCOMING_REGNUM
rv = gen_rtx_REG (Pmode, STRUCT_VALUE_INCOMING_REGNUM);
#else
#ifdef STRUCT_VALUE
rv = STRUCT_VALUE;
#else
#ifndef STRUCT_VALUE_REGNUM
abort();
#else
rv = gen_rtx_REG (Pmode, STRUCT_VALUE_REGNUM);
#endif
#endif
#endif
#endif
}
else
{
#ifdef STRUCT_VALUE
rv = STRUCT_VALUE;
#else
#ifndef STRUCT_VALUE_REGNUM
abort();
#else
rv = gen_rtx_REG (Pmode, STRUCT_VALUE_REGNUM);
#endif
#endif
}
return rv;
}
bool
default_return_in_memory (tree type,
tree fntype ATTRIBUTE_UNUSED)
{
#ifndef RETURN_IN_MEMORY
return (TYPE_MODE (type) == BLKmode);
#else
return RETURN_IN_MEMORY (type);
#endif
}
rtx
default_expand_builtin_saveregs (void)
{
#ifdef EXPAND_BUILTIN_SAVEREGS
return EXPAND_BUILTIN_SAVEREGS ();
#else
error ("__builtin_saveregs not supported by this target");
return const0_rtx;
#endif
}
void
default_setup_incoming_varargs (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
enum machine_mode mode ATTRIBUTE_UNUSED,
tree type ATTRIBUTE_UNUSED,
int *pretend_arg_size ATTRIBUTE_UNUSED,
int second_time ATTRIBUTE_UNUSED)
{
#ifdef SETUP_INCOMING_VARARGS
SETUP_INCOMING_VARARGS ((*ca), mode, type, (*pretend_arg_size), second_time);
#endif
}
bool
default_strict_argument_naming (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED)
{
#ifdef STRICT_ARGUMENT_NAMING
return STRICT_ARGUMENT_NAMING;
#else
return 0;
#endif
}
bool
default_pretend_outgoing_varargs_named(CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED)
{
#ifdef PRETEND_OUTGOING_VARARGS_NAMED
return PRETEND_OUTGOING_VARARGS_NAMED;
#else
#ifdef SETUP_INCOMING_VARARGS
return 1;
#else
return (targetm.calls.setup_incoming_varargs != default_setup_incoming_varargs);
#endif
#endif
}
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