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/* Built-in and inline functions for gcj
Copyright (C) 2001, 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.
Java and all Java-based marks are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries.
The Free Software Foundation is independent of Sun Microsystems, Inc. */
/* Written by Tom Tromey <tromey@redhat.com>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "ggc.h"
#include "flags.h"
#include "langhooks.h"
#include "java-tree.h"
enum builtin_type
{
#define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
#define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
#define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
#define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
#define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
#define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
#define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
#define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
#define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
#define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
#define DEF_POINTER_TYPE(NAME, TYPE) NAME,
#include "builtin-types.def"
#undef DEF_PRIMITIVE_TYPE
#undef DEF_FUNCTION_TYPE_0
#undef DEF_FUNCTION_TYPE_1
#undef DEF_FUNCTION_TYPE_2
#undef DEF_FUNCTION_TYPE_3
#undef DEF_FUNCTION_TYPE_4
#undef DEF_FUNCTION_TYPE_VAR_0
#undef DEF_FUNCTION_TYPE_VAR_1
#undef DEF_FUNCTION_TYPE_VAR_2
#undef DEF_FUNCTION_TYPE_VAR_3
#undef DEF_POINTER_TYPE
BT_LAST
};
static tree max_builtin (tree, tree);
static tree min_builtin (tree, tree);
static tree abs_builtin (tree, tree);
static tree java_build_function_call_expr (tree, tree);
static void define_builtin (enum built_in_function, const char *,
tree, const char *);
/* Functions of this type are used to inline a given call. Such a
function should either return an expression, if the call is to be
inlined, or NULL_TREE if a real call should be emitted. Arguments
are method return type and arguments to call. */
typedef tree builtin_creator_function PARAMS ((tree, tree));
/* Hold a char*, before initialization, or a tree, after
initialization. */
union string_or_tree GTY(())
{
const char * GTY ((tag ("0"))) s;
tree GTY ((tag ("1"))) t;
};
/* Used to hold a single builtin record. */
struct builtin_record GTY(())
{
union string_or_tree GTY ((desc ("1"))) class_name;
union string_or_tree GTY ((desc ("1"))) method_name;
builtin_creator_function * GTY((skip (""))) creator;
enum built_in_function builtin_code;
};
static GTY(()) struct builtin_record java_builtins[] =
{
{ { "java.lang.Math" }, { "min" }, min_builtin, 0 },
{ { "java.lang.Math" }, { "max" }, max_builtin, 0 },
{ { "java.lang.Math" }, { "abs" }, abs_builtin, 0 },
{ { "java.lang.Math" }, { "atan" }, NULL, BUILT_IN_ATAN },
{ { "java.lang.Math" }, { "atan2" }, NULL, BUILT_IN_ATAN2 },
{ { "java.lang.Math" }, { "cos" }, NULL, BUILT_IN_COS },
{ { "java.lang.Math" }, { "exp" }, NULL, BUILT_IN_EXP },
{ { "java.lang.Math" }, { "log" }, NULL, BUILT_IN_LOG },
{ { "java.lang.Math" }, { "pow" }, NULL, BUILT_IN_POW },
{ { "java.lang.Math" }, { "sin" }, NULL, BUILT_IN_SIN },
{ { "java.lang.Math" }, { "sqrt" }, NULL, BUILT_IN_SQRT },
{ { "java.lang.Math" }, { "tan" }, NULL, BUILT_IN_TAN },
{ { NULL }, { NULL }, NULL, END_BUILTINS }
};
/* Internal functions which implement various builtin conversions. */
static tree
max_builtin (tree method_return_type, tree method_arguments)
{
return fold (build (MAX_EXPR, method_return_type,
TREE_VALUE (method_arguments),
TREE_VALUE (TREE_CHAIN (method_arguments))));
}
static tree
min_builtin (tree method_return_type, tree method_arguments)
{
return fold (build (MIN_EXPR, method_return_type,
TREE_VALUE (method_arguments),
TREE_VALUE (TREE_CHAIN (method_arguments))));
}
static tree
abs_builtin (tree method_return_type, tree method_arguments)
{
return fold (build1 (ABS_EXPR, method_return_type,
TREE_VALUE (method_arguments)));
}
/* Mostly copied from ../builtins.c. */
static tree
java_build_function_call_expr (tree fn, tree arglist)
{
tree call_expr;
call_expr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (fn)), fn);
call_expr = build (CALL_EXPR, TREE_TYPE (TREE_TYPE (fn)),
call_expr, arglist);
TREE_SIDE_EFFECTS (call_expr) = 1;
return fold (call_expr);
}
/* Define a single builtin. */
static void
define_builtin (enum built_in_function val,
const char *name,
tree type,
const char *libname)
{
tree decl;
decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname));
make_decl_rtl (decl, NULL);
pushdecl (decl);
DECL_BUILT_IN_CLASS (decl) = BUILT_IN_NORMAL;
DECL_FUNCTION_CODE (decl) = val;
implicit_built_in_decls[val] = decl;
built_in_decls[val] = decl;
}
/* Initialize the builtins. */
void
initialize_builtins (void)
{
tree double_ftype_double, double_ftype_double_double;
tree float_ftype_float, float_ftype_float_float;
tree t;
int i;
for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
{
tree klass_id = get_identifier (java_builtins[i].class_name.s);
tree m = get_identifier (java_builtins[i].method_name.s);
java_builtins[i].class_name.t = klass_id;
java_builtins[i].method_name.t = m;
}
void_list_node = end_params_node;
t = tree_cons (NULL_TREE, float_type_node, end_params_node);
float_ftype_float = build_function_type (float_type_node, t);
t = tree_cons (NULL_TREE, float_type_node, t);
float_ftype_float_float = build_function_type (float_type_node, t);
t = tree_cons (NULL_TREE, double_type_node, end_params_node);
double_ftype_double = build_function_type (double_type_node, t);
t = tree_cons (NULL_TREE, double_type_node, t);
double_ftype_double_double = build_function_type (double_type_node, t);
define_builtin (BUILT_IN_FMOD, "__builtin_fmod",
double_ftype_double_double, "fmod");
define_builtin (BUILT_IN_FMODF, "__builtin_fmodf",
float_ftype_float_float, "fmodf");
define_builtin (BUILT_IN_ATAN, "__builtin_atan",
double_ftype_double, "_ZN4java4lang4Math4atanEd");
define_builtin (BUILT_IN_ATAN2, "__builtin_atan2",
double_ftype_double_double, "_ZN4java4lang4Math5atan2Edd");
define_builtin (BUILT_IN_COS, "__builtin_cos",
double_ftype_double, "_ZN4java4lang4Math3cosEd");
define_builtin (BUILT_IN_EXP, "__builtin_exp",
double_ftype_double, "_ZN4java4lang4Math3expEd");
define_builtin (BUILT_IN_LOG, "__builtin_log",
double_ftype_double, "_ZN4java4lang4Math3logEd");
define_builtin (BUILT_IN_POW, "__builtin_pow",
double_ftype_double_double, "_ZN4java4lang4Math3powEdd");
define_builtin (BUILT_IN_SIN, "__builtin_sin",
double_ftype_double, "_ZN4java4lang4Math3sinEd");
define_builtin (BUILT_IN_SQRT, "__builtin_sqrt",
double_ftype_double, "_ZN4java4lang4Math4sqrtEd");
define_builtin (BUILT_IN_TAN, "__builtin_tan",
double_ftype_double, "_ZN4java4lang4Math3tanEd");
}
/* If the call matches a builtin, return the
appropriate builtin expression instead. */
tree
check_for_builtin (tree method, tree call)
{
if (! flag_emit_class_files && optimize && TREE_CODE (call) == CALL_EXPR)
{
int i;
tree method_arguments = TREE_OPERAND (call, 1);
tree method_class = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
tree method_name = DECL_NAME (method);
tree method_return_type = TREE_TYPE (TREE_TYPE (method));
for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
{
if (method_class == java_builtins[i].class_name.t
&& method_name == java_builtins[i].method_name.t)
{
tree fn;
if (java_builtins[i].creator != NULL)
return (*java_builtins[i].creator) (method_return_type,
method_arguments);
fn = built_in_decls[java_builtins[i].builtin_code];
if (fn == NULL_TREE)
return NULL_TREE;
return java_build_function_call_expr (fn, method_arguments);
}
}
}
return call;
}
#include "gt-java-builtins.h"
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