1 /* Copyright (C) 2006-2017 Free Software Foundation, Inc. 2 3 This file is free software; you can redistribute it and/or modify it under 4 the terms of the GNU General Public License as published by the Free 5 Software Foundation; either version 3 of the License, or (at your option) 6 any later version. 7 8 This file is distributed in the hope that it will be useful, but WITHOUT 9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 for more details. 12 13 You should have received a copy of the GNU General Public License 14 along with GCC; see the file COPYING3. If not see 15 <http://www.gnu.org/licenses/>. */ 16 17 #include "config.h" 18 #include "system.h" 19 #include "coretypes.h" 20 #include "target.h" 21 #include "c-family/c-common.h" 22 #include "stringpool.h" 23 #include "langhooks.h" 24 25 26 /* Keep the vector keywords handy for fast comparisons. */ 27 static GTY(()) tree __vector_keyword; 28 static GTY(()) tree vector_keyword; 29 30 static cpp_hashnode * 31 spu_categorize_keyword (const cpp_token *tok) 32 { 33 if (tok->type == CPP_NAME) 34 { 35 cpp_hashnode *ident = tok->val.node.node; 36 37 if (ident == C_CPP_HASHNODE (vector_keyword) 38 || ident == C_CPP_HASHNODE (__vector_keyword)) 39 return C_CPP_HASHNODE (__vector_keyword); 40 else 41 return ident; 42 } 43 return 0; 44 } 45 46 /* Called to decide whether a conditional macro should be expanded. 47 Since we have exactly one such macro (i.e, 'vector'), we do not 48 need to examine the 'tok' parameter. */ 49 50 static cpp_hashnode * 51 spu_macro_to_expand (cpp_reader *pfile, const cpp_token *tok) 52 { 53 cpp_hashnode *expand_this = tok->val.node.node; 54 cpp_hashnode *ident; 55 56 ident = spu_categorize_keyword (tok); 57 if (ident == C_CPP_HASHNODE (__vector_keyword)) 58 { 59 tok = cpp_peek_token (pfile, 0); 60 ident = spu_categorize_keyword (tok); 61 62 if (ident) 63 { 64 enum rid rid_code = (enum rid)(ident->rid_code); 65 if (ident->type == NT_MACRO) 66 { 67 (void) cpp_get_token (pfile); 68 tok = cpp_peek_token (pfile, 0); 69 ident = spu_categorize_keyword (tok); 70 if (ident) 71 rid_code = (enum rid)(ident->rid_code); 72 } 73 74 if (rid_code == RID_UNSIGNED || rid_code == RID_LONG 75 || rid_code == RID_SHORT || rid_code == RID_SIGNED 76 || rid_code == RID_INT || rid_code == RID_CHAR 77 || rid_code == RID_FLOAT || rid_code == RID_DOUBLE) 78 expand_this = C_CPP_HASHNODE (__vector_keyword); 79 } 80 } 81 return expand_this; 82 } 83 84 /* target hook for resolve_overloaded_builtin(). Returns a function call 85 RTX if we can resolve the overloaded builtin */ 86 tree 87 spu_resolve_overloaded_builtin (location_t loc, tree fndecl, void *passed_args) 88 { 89 #define SCALAR_TYPE_P(t) (INTEGRAL_TYPE_P (t) \ 90 || SCALAR_FLOAT_TYPE_P (t) \ 91 || POINTER_TYPE_P (t)) 92 vec<tree, va_gc> *fnargs = static_cast <vec<tree, va_gc> *> (passed_args); 93 unsigned int nargs = vec_safe_length (fnargs); 94 int new_fcode, fcode = DECL_FUNCTION_CODE (fndecl); 95 struct spu_builtin_description *desc; 96 tree match = NULL_TREE; 97 98 /* The vector types are not available if the backend is not initialized. */ 99 gcc_assert (!flag_preprocess_only); 100 101 desc = &spu_builtins[fcode]; 102 if (desc->type != B_OVERLOAD) 103 return NULL_TREE; 104 105 /* Compare the signature of each internal builtin function with the 106 function arguments until a match is found. */ 107 108 for (new_fcode = fcode + 1; spu_builtins[new_fcode].type == B_INTERNAL; 109 new_fcode++) 110 { 111 tree decl = targetm.builtin_decl (new_fcode, true); 112 tree params = TYPE_ARG_TYPES (TREE_TYPE (decl)); 113 tree param; 114 bool all_scalar; 115 unsigned int p; 116 117 /* Check whether all parameters are scalar. */ 118 all_scalar = true; 119 for (param = params; param != void_list_node; param = TREE_CHAIN (param)) 120 if (!SCALAR_TYPE_P (TREE_VALUE (param))) 121 all_scalar = false; 122 123 for (param = params, p = 0; 124 param != void_list_node; 125 param = TREE_CHAIN (param), p++) 126 { 127 tree var, arg_type, param_type = TREE_VALUE (param); 128 129 if (p >= nargs) 130 { 131 error ("insufficient arguments to overloaded function %s", 132 desc->name); 133 return error_mark_node; 134 } 135 136 var = (*fnargs)[p]; 137 138 if (TREE_CODE (var) == NON_LVALUE_EXPR) 139 var = TREE_OPERAND (var, 0); 140 141 if (TREE_CODE (var) == ERROR_MARK) 142 return NULL_TREE; /* Let somebody else deal with the problem. */ 143 144 arg_type = TREE_TYPE (var); 145 146 /* The intrinsics spec does not specify precisely how to 147 resolve generic intrinsics. We require an exact match 148 for vector types and let C do it's usual parameter type 149 checking/promotions for scalar arguments, except for the 150 first argument of intrinsics which don't have a vector 151 parameter. */ 152 if ((!SCALAR_TYPE_P (param_type) 153 || !SCALAR_TYPE_P (arg_type) 154 || (all_scalar && p == 0)) 155 && !lang_hooks.types_compatible_p (param_type, arg_type)) 156 break; 157 } 158 if (param == void_list_node) 159 { 160 if (p != nargs) 161 { 162 error ("too many arguments to overloaded function %s", 163 desc->name); 164 return error_mark_node; 165 } 166 167 match = decl; 168 break; 169 } 170 } 171 172 if (match == NULL_TREE) 173 { 174 error ("parameter list does not match a valid signature for %s()", 175 desc->name); 176 return error_mark_node; 177 } 178 179 return build_function_call_vec (loc, vNULL, match, fnargs, NULL); 180 #undef SCALAR_TYPE_P 181 } 182 183 184 void 185 spu_cpu_cpp_builtins (struct cpp_reader *pfile) 186 { 187 cpp_define (pfile, "__SPU__"); 188 cpp_assert (pfile, "cpu=spu"); 189 cpp_assert (pfile, "machine=spu"); 190 if (spu_arch == PROCESSOR_CELLEDP) 191 cpp_define (pfile, "__SPU_EDP__"); 192 if (cpp_get_options (pfile)->lang != CLK_ASM) 193 cpp_define (pfile, "__vector=__attribute__((__spu_vector__))"); 194 switch (spu_ea_model) 195 { 196 case 32: 197 cpp_define (pfile, "__EA32__"); 198 break; 199 case 64: 200 cpp_define (pfile, "__EA64__"); 201 break; 202 default: 203 gcc_unreachable (); 204 } 205 206 if (!flag_iso && cpp_get_options (pfile)->lang != CLK_ASM) 207 { 208 /* Define this when supporting context-sensitive keywords. */ 209 cpp_define (pfile, "__VECTOR_KEYWORD_SUPPORTED__"); 210 cpp_define (pfile, "vector=vector"); 211 212 /* Initialize vector keywords. */ 213 __vector_keyword = get_identifier ("__vector"); 214 C_CPP_HASHNODE (__vector_keyword)->flags |= NODE_CONDITIONAL; 215 vector_keyword = get_identifier ("vector"); 216 C_CPP_HASHNODE (vector_keyword)->flags |= NODE_CONDITIONAL; 217 218 /* Enable context-sensitive macros. */ 219 cpp_get_callbacks (pfile)->macro_to_expand = spu_macro_to_expand; 220 } 221 } 222 223 void 224 spu_c_common_override_options (void) 225 { 226 if (!TARGET_STD_MAIN) 227 { 228 /* Don't give warnings about the main() function. */ 229 warn_main = 0; 230 } 231 } 232