/* 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 . */ #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 cos_builtin (tree, tree); static tree sin_builtin (tree, tree); static tree sqrt_builtin (tree, tree); static tree java_build_function_call_expr (tree, tree); static void define_builtin (enum built_in_function, const char *, enum built_in_class, tree, int, int); static tree define_builtin_type (int, int, int, int, int); /* 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; }; static GTY(()) struct builtin_record java_builtins[] = { { { "java.lang.Math" }, { "min" }, min_builtin }, { { "java.lang.Math" }, { "max" }, max_builtin }, { { "java.lang.Math" }, { "abs" }, abs_builtin }, { { "java.lang.Math" }, { "cos" }, cos_builtin }, { { "java.lang.Math" }, { "sin" }, sin_builtin }, { { "java.lang.Math" }, { "sqrt" }, sqrt_builtin }, { { NULL }, { NULL }, NULL } }; /* This is only used transiently, so we don't mark it as roots for the GC. */ static tree builtin_types[(int) BT_LAST]; /* Internal functions which implement various builtin conversions. */ static tree max_builtin (tree method_return_type, tree method_arguments) { return 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 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 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 call_expr; } static tree cos_builtin (tree method_return_type ATTRIBUTE_UNUSED, tree method_arguments) { /* FIXME: this assumes that jdouble and double are the same. */ tree fn = built_in_decls[BUILT_IN_COS]; if (fn == NULL_TREE) return NULL_TREE; return java_build_function_call_expr (fn, method_arguments); } static tree sin_builtin (tree method_return_type ATTRIBUTE_UNUSED, tree method_arguments) { /* FIXME: this assumes that jdouble and double are the same. */ tree fn = built_in_decls[BUILT_IN_SIN]; if (fn == NULL_TREE) return NULL_TREE; return java_build_function_call_expr (fn, method_arguments); } static tree sqrt_builtin (tree method_return_type ATTRIBUTE_UNUSED, tree method_arguments) { /* FIXME: this assumes that jdouble and double are the same. */ tree fn = built_in_decls[BUILT_IN_SQRT]; if (fn == NULL_TREE) return NULL_TREE; return java_build_function_call_expr (fn, method_arguments); } /* Define a single builtin. */ static void define_builtin (enum built_in_function val, const char *name, enum built_in_class class, tree type, int fallback_p, int implicit) { tree decl; if (! name || ! type) return; if (strncmp (name, "__builtin_", strlen ("__builtin_")) != 0) abort (); decl = build_decl (FUNCTION_DECL, get_identifier (name), type); DECL_EXTERNAL (decl) = 1; TREE_PUBLIC (decl) = 1; if (fallback_p) SET_DECL_ASSEMBLER_NAME (decl, get_identifier (name + strlen ("__builtin_"))); make_decl_rtl (decl, NULL); pushdecl (decl); DECL_BUILT_IN_CLASS (decl) = class; DECL_FUNCTION_CODE (decl) = val; built_in_decls[val] = decl; if (implicit) implicit_built_in_decls[val] = decl; } /* Compute the type for a builtin. */ static tree define_builtin_type (int ret, int arg1, int arg2, int arg3, int arg4) { tree args; if (builtin_types[ret] == NULL_TREE) return NULL_TREE; args = void_list_node; if (arg4 != -1) { if (builtin_types[arg4] == NULL_TREE) return NULL_TREE; args = tree_cons (NULL_TREE, builtin_types[arg4], args); } if (arg3 != -1) { if (builtin_types[arg3] == NULL_TREE) return NULL_TREE; args = tree_cons (NULL_TREE, builtin_types[arg3], args); } if (arg2 != -1) { if (builtin_types[arg2] == NULL_TREE) return NULL_TREE; args = tree_cons (NULL_TREE, builtin_types[arg2], args); } if (arg1 != -1) { if (builtin_types[arg1] == NULL_TREE) return NULL_TREE; args = tree_cons (NULL_TREE, builtin_types[arg1], args); } return build_function_type (builtin_types[ret], args); } /* Initialize the builtins. */ void initialize_builtins (void) { int i; for (i = 0; java_builtins[i].creator != NULL; ++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; /* Work around C-specific junk in builtin-types.def. */ #define intmax_type_node NULL_TREE #define c_size_type_node NULL_TREE #define const_string_type_node NULL_TREE #define va_list_ref_type_node NULL_TREE #define va_list_arg_type_node NULL_TREE #define flag_isoc99 0 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \ builtin_types[(int) ENUM] = VALUE; #define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \ builtin_types[(int) ENUM] \ = define_builtin_type (RETURN, -1, -1, -1, -1); #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \ builtin_types[(int) ENUM] \ = define_builtin_type (RETURN, ARG1, -1, -1, -1); #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \ builtin_types[(int) ENUM] \ = define_builtin_type (RETURN, ARG1, ARG2, -1, -1); #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \ builtin_types[(int) ENUM] \ = define_builtin_type (RETURN, ARG1, ARG2, ARG3, -1); #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \ builtin_types[(int) ENUM] \ = define_builtin_type (RETURN, ARG1, ARG2, ARG3, ARG4); #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \ builtin_types[(int) ENUM] = NULL_TREE; #define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \ builtin_types[(int) ENUM] = NULL_TREE; #define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \ builtin_types[(int) ENUM] = NULL_TREE; #define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \ builtin_types[(int) ENUM] = NULL_TREE; #define DEF_POINTER_TYPE(ENUM, TYPE) \ builtin_types[(int) ENUM] = NULL_TREE; #include "builtin-types.def" #define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, \ FALLBACK_P, NONANSI_P, ATTRS, IMPLICIT) \ define_builtin (ENUM, NAME, CLASS, builtin_types[TYPE], FALLBACK_P, IMPLICIT); #include "builtins.def" } /* 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].creator != NULL; ++i) { if (method_class == java_builtins[i].class_name.t && method_name == java_builtins[i].method_name.t) { return (*java_builtins[i].creator) (method_return_type, method_arguments); } } } return call; } #include "gt-java-builtins.h"