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/* Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
This file 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.
This file 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 "tm.h"
#include "cpplib.h"
#include "tree.h"
#include "c-tree.h"
#include "c-pragma.h"
#include "function.h"
#include "rtl.h"
#include "expr.h"
#include "tm_p.h"
#include "langhooks.h"
#include "insn-config.h"
#include "insn-codes.h"
#include "recog.h"
#include "optabs.h"
/* Keep the vector keywords handy for fast comparisons. */
static GTY(()) tree __vector_keyword;
static GTY(()) tree vector_keyword;
static cpp_hashnode *
spu_categorize_keyword (const cpp_token *tok)
{
if (tok->type == CPP_NAME)
{
cpp_hashnode *ident = tok->val.node;
if (ident == C_CPP_HASHNODE (vector_keyword)
|| ident == C_CPP_HASHNODE (__vector_keyword))
return C_CPP_HASHNODE (__vector_keyword);
else
return ident;
}
return 0;
}
/* Called to decide whether a conditional macro should be expanded.
Since we have exactly one such macro (i.e, 'vector'), we do not
need to examine the 'tok' parameter. */
static cpp_hashnode *
spu_macro_to_expand (cpp_reader *pfile, const cpp_token *tok)
{
cpp_hashnode *expand_this = tok->val.node;
cpp_hashnode *ident;
ident = spu_categorize_keyword (tok);
if (ident == C_CPP_HASHNODE (__vector_keyword))
{
tok = cpp_peek_token (pfile, 0);
ident = spu_categorize_keyword (tok);
if (ident)
{
enum rid rid_code = (enum rid)(ident->rid_code);
if (ident->type == NT_MACRO)
{
(void) cpp_get_token (pfile);
tok = cpp_peek_token (pfile, 0);
ident = spu_categorize_keyword (tok);
if (ident)
rid_code = (enum rid)(ident->rid_code);
}
if (rid_code == RID_UNSIGNED || rid_code == RID_LONG
|| rid_code == RID_SHORT || rid_code == RID_SIGNED
|| rid_code == RID_INT || rid_code == RID_CHAR
|| rid_code == RID_FLOAT || rid_code == RID_DOUBLE)
expand_this = C_CPP_HASHNODE (__vector_keyword);
}
}
return expand_this;
}
/* target hook for resolve_overloaded_builtin(). Returns a function call
RTX if we can resolve the overloaded builtin */
tree
spu_resolve_overloaded_builtin (tree fndecl, void *passed_args)
{
#define SCALAR_TYPE_P(t) (INTEGRAL_TYPE_P (t) \
|| SCALAR_FLOAT_TYPE_P (t) \
|| POINTER_TYPE_P (t))
VEC(tree,gc) *fnargs = (VEC(tree,gc) *) passed_args;
unsigned int nargs = VEC_length (tree, fnargs);
int new_fcode, fcode = DECL_FUNCTION_CODE (fndecl) - END_BUILTINS;
struct spu_builtin_description *desc;
tree match = NULL_TREE;
/* The vector types are not available if the backend is not initialized. */
gcc_assert (!flag_preprocess_only);
desc = &spu_builtins[fcode];
if (desc->type != B_OVERLOAD)
return NULL_TREE;
/* Compare the signature of each internal builtin function with the
function arguments until a match is found. */
for (new_fcode = fcode + 1; spu_builtins[new_fcode].type == B_INTERNAL;
new_fcode++)
{
tree decl = spu_builtins[new_fcode].fndecl;
tree params = TYPE_ARG_TYPES (TREE_TYPE (decl));
tree param;
bool all_scalar;
unsigned int p;
/* Check whether all parameters are scalar. */
all_scalar = true;
for (param = params; param != void_list_node; param = TREE_CHAIN (param))
if (!SCALAR_TYPE_P (TREE_VALUE (param)))
all_scalar = false;
for (param = params, p = 0;
param != void_list_node;
param = TREE_CHAIN (param), p++)
{
tree var, arg_type, param_type = TREE_VALUE (param);
if (p >= nargs)
{
error ("insufficient arguments to overloaded function %s",
desc->name);
return error_mark_node;
}
var = VEC_index (tree, fnargs, p);
if (TREE_CODE (var) == NON_LVALUE_EXPR)
var = TREE_OPERAND (var, 0);
if (TREE_CODE (var) == ERROR_MARK)
return NULL_TREE; /* Let somebody else deal with the problem. */
arg_type = TREE_TYPE (var);
/* The intrinsics spec does not specify precisely how to
resolve generic intrinsics. We require an exact match
for vector types and let C do it's usual parameter type
checking/promotions for scalar arguments, except for the
first argument of intrinsics which don't have a vector
parameter. */
if ((!SCALAR_TYPE_P (param_type)
|| !SCALAR_TYPE_P (arg_type)
|| (all_scalar && p == 0))
&& !comptypes (TYPE_MAIN_VARIANT (param_type),
TYPE_MAIN_VARIANT (arg_type)))
break;
}
if (param == void_list_node)
{
if (p != nargs)
{
error ("too many arguments to overloaded function %s",
desc->name);
return error_mark_node;
}
match = decl;
break;
}
}
if (match == NULL_TREE)
{
error ("parameter list does not match a valid signature for %s()",
desc->name);
return error_mark_node;
}
return build_function_call_vec (match, fnargs, NULL);
#undef SCALAR_TYPE_P
}
void
spu_cpu_cpp_builtins (struct cpp_reader *pfile)
{
builtin_define_std ("__SPU__");
cpp_assert (pfile, "cpu=spu");
cpp_assert (pfile, "machine=spu");
if (spu_arch == PROCESSOR_CELLEDP)
builtin_define_std ("__SPU_EDP__");
builtin_define_std ("__vector=__attribute__((__spu_vector__))");
if (!flag_iso)
{
/* Define this when supporting context-sensitive keywords. */
cpp_define (pfile, "__VECTOR_KEYWORD_SUPPORTED__");
cpp_define (pfile, "vector=vector");
/* Initialize vector keywords. */
__vector_keyword = get_identifier ("__vector");
C_CPP_HASHNODE (__vector_keyword)->flags |= NODE_CONDITIONAL;
vector_keyword = get_identifier ("vector");
C_CPP_HASHNODE (vector_keyword)->flags |= NODE_CONDITIONAL;
/* Enable context-sensitive macros. */
cpp_get_callbacks (pfile)->macro_to_expand = spu_macro_to_expand;
}
}
void
spu_c_common_override_options (void)
{
if (!TARGET_STD_MAIN)
{
/* Don't give warnings about the main() function. */
warn_main = 0;
}
}
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