1 /* 2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_INTERPRETER_TEMPLATETABLE_HPP 26 #define SHARE_VM_INTERPRETER_TEMPLATETABLE_HPP 27 28 #include "interpreter/bytecodes.hpp" 29 #include "memory/allocation.hpp" 30 #include "runtime/frame.hpp" 31 #include "utilities/macros.hpp" 32 33 #ifndef CC_INTERP 34 // All the necessary definitions used for (bytecode) template generation. Instead of 35 // spreading the implementation functionality for each bytecode in the interpreter 36 // and the snippet generator, a template is assigned to each bytecode which can be 37 // used to generate the bytecode's implementation if needed. 38 39 class InterpreterMacroAssembler; 40 41 // A Template describes the properties of a code template for a given bytecode 42 // and provides a generator to generate the code template. 43 44 class Template { 45 private: 46 enum Flags { 47 uses_bcp_bit, // set if template needs the bcp pointing to bytecode 48 does_dispatch_bit, // set if template dispatches on its own 49 calls_vm_bit, // set if template calls the vm 50 wide_bit // set if template belongs to a wide instruction 51 }; 52 53 typedef void (*generator)(int arg); 54 55 int _flags; // describes interpreter template properties (bcp unknown) 56 TosState _tos_in; // tos cache state before template execution 57 TosState _tos_out; // tos cache state after template execution 58 generator _gen; // template code generator 59 int _arg; // argument for template code generator 60 61 void initialize(int flags, TosState tos_in, TosState tos_out, generator gen, int arg); 62 63 friend class TemplateTable; 64 65 public: 66 Bytecodes::Code bytecode() const; 67 bool is_valid() const { return _gen != NULL; } 68 bool uses_bcp() const { return (_flags & (1 << uses_bcp_bit )) != 0; } 69 bool does_dispatch() const { return (_flags & (1 << does_dispatch_bit)) != 0; } 70 bool calls_vm() const { return (_flags & (1 << calls_vm_bit )) != 0; } 71 bool is_wide() const { return (_flags & (1 << wide_bit )) != 0; } 72 TosState tos_in() const { return _tos_in; } 73 TosState tos_out() const { return _tos_out; } 74 void generate(InterpreterMacroAssembler* masm); 75 }; 76 77 78 // The TemplateTable defines all Templates and provides accessor functions 79 // to get the template for a given bytecode. 80 81 class TemplateTable: AllStatic { 82 public: 83 enum Operation { add, sub, mul, div, rem, _and, _or, _xor, shl, shr, ushr }; 84 enum Condition { equal, not_equal, less, less_equal, greater, greater_equal }; 85 enum CacheByte { f1_byte = 1, f2_byte = 2 }; // byte_no codes 86 enum RewriteControl { may_rewrite, may_not_rewrite }; // control for fast code under CDS 87 88 private: 89 static bool _is_initialized; // true if TemplateTable has been initialized 90 static Template _template_table [Bytecodes::number_of_codes]; 91 static Template _template_table_wide[Bytecodes::number_of_codes]; 92 93 static Template* _desc; // the current template to be generated 94 static Bytecodes::Code bytecode() { return _desc->bytecode(); } 95 96 static BarrierSet* _bs; // Cache the barrier set. 97 public: 98 //%note templates_1 99 static InterpreterMacroAssembler* _masm; // the assembler used when generating templates 100 101 private: 102 103 // special registers 104 static inline Address at_bcp(int offset); 105 106 // helpers 107 static void unimplemented_bc(); 108 static void patch_bytecode(Bytecodes::Code bc, Register bc_reg, 109 Register temp_reg, bool load_bc_into_bc_reg = true, int byte_no = -1); 110 111 // C calls 112 static void call_VM(Register oop_result, address entry_point); 113 static void call_VM(Register oop_result, address entry_point, Register arg_1); 114 static void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2); 115 static void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3); 116 117 // these overloadings are not presently used on SPARC: 118 static void call_VM(Register oop_result, Register last_java_sp, address entry_point); 119 static void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1); 120 static void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2); 121 static void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3); 122 123 // bytecodes 124 static void nop(); 125 126 static void aconst_null(); 127 static void iconst(int value); 128 static void lconst(int value); 129 static void fconst(int value); 130 static void dconst(int value); 131 132 static void bipush(); 133 static void sipush(); 134 static void ldc(bool wide); 135 static void ldc2_w(); 136 static void fast_aldc(bool wide); 137 138 static void locals_index(Register reg, int offset = 1); 139 static void iload(); 140 static void fast_iload(); 141 static void fast_iload2(); 142 static void fast_icaload(); 143 static void lload(); 144 static void fload(); 145 static void dload(); 146 static void aload(); 147 148 static void locals_index_wide(Register reg); 149 static void wide_iload(); 150 static void wide_lload(); 151 static void wide_fload(); 152 static void wide_dload(); 153 static void wide_aload(); 154 155 static void iaload(); 156 static void laload(); 157 static void faload(); 158 static void daload(); 159 static void aaload(); 160 static void baload(); 161 static void caload(); 162 static void saload(); 163 164 static void iload(int n); 165 static void lload(int n); 166 static void fload(int n); 167 static void dload(int n); 168 static void aload(int n); 169 static void aload_0(); 170 static void nofast_aload_0(); 171 static void nofast_iload(); 172 static void iload_internal(RewriteControl rc = may_rewrite); 173 static void aload_0_internal(RewriteControl rc = may_rewrite); 174 175 static void istore(); 176 static void lstore(); 177 static void fstore(); 178 static void dstore(); 179 static void astore(); 180 181 static void wide_istore(); 182 static void wide_lstore(); 183 static void wide_fstore(); 184 static void wide_dstore(); 185 static void wide_astore(); 186 187 static void iastore(); 188 static void lastore(); 189 static void fastore(); 190 static void dastore(); 191 static void aastore(); 192 static void bastore(); 193 static void castore(); 194 static void sastore(); 195 196 static void istore(int n); 197 static void lstore(int n); 198 static void fstore(int n); 199 static void dstore(int n); 200 static void astore(int n); 201 202 static void pop(); 203 static void pop2(); 204 static void dup(); 205 static void dup_x1(); 206 static void dup_x2(); 207 static void dup2(); 208 static void dup2_x1(); 209 static void dup2_x2(); 210 static void swap(); 211 212 static void iop2(Operation op); 213 static void lop2(Operation op); 214 static void fop2(Operation op); 215 static void dop2(Operation op); 216 217 static void idiv(); 218 static void irem(); 219 220 static void lmul(); 221 static void ldiv(); 222 static void lrem(); 223 static void lshl(); 224 static void lshr(); 225 static void lushr(); 226 227 static void ineg(); 228 static void lneg(); 229 static void fneg(); 230 static void dneg(); 231 232 static void iinc(); 233 static void wide_iinc(); 234 static void convert(); 235 static void lcmp(); 236 237 static void float_cmp (bool is_float, int unordered_result); 238 static void float_cmp (int unordered_result); 239 static void double_cmp(int unordered_result); 240 241 static void count_calls(Register method, Register temp); 242 static void branch(bool is_jsr, bool is_wide); 243 static void if_0cmp (Condition cc); 244 static void if_icmp (Condition cc); 245 static void if_nullcmp(Condition cc); 246 static void if_acmp (Condition cc); 247 248 static void _goto(); 249 static void jsr(); 250 static void ret(); 251 static void wide_ret(); 252 253 static void goto_w(); 254 static void jsr_w(); 255 256 static void tableswitch(); 257 static void lookupswitch(); 258 static void fast_linearswitch(); 259 static void fast_binaryswitch(); 260 261 static void _return(TosState state); 262 263 static void resolve_cache_and_index(int byte_no, // one of 1,2,11 264 Register cache, // output for CP cache 265 Register index, // output for CP index 266 size_t index_size); // one of 1,2,4 267 static void load_invoke_cp_cache_entry(int byte_no, 268 Register method, 269 Register itable_index, 270 Register flags, 271 bool is_invokevirtual, 272 bool is_virtual_final, 273 bool is_invokedynamic); 274 static void load_field_cp_cache_entry(Register obj, 275 Register cache, 276 Register index, 277 Register offset, 278 Register flags, 279 bool is_static); 280 static void invokevirtual(int byte_no); 281 static void invokespecial(int byte_no); 282 static void invokestatic(int byte_no); 283 static void invokeinterface(int byte_no); 284 static void invokedynamic(int byte_no); 285 static void invokehandle(int byte_no); 286 static void fast_invokevfinal(int byte_no); 287 288 static void getfield_or_static(int byte_no, bool is_static, RewriteControl rc = may_rewrite); 289 static void putfield_or_static(int byte_no, bool is_static, RewriteControl rc = may_rewrite); 290 291 static void getfield(int byte_no); 292 static void putfield(int byte_no); 293 static void nofast_getfield(int byte_no); 294 static void nofast_putfield(int byte_no); 295 static void getstatic(int byte_no); 296 static void putstatic(int byte_no); 297 static void pop_and_check_object(Register obj); 298 static void condy_helper(Label& Done); // shared by ldc instances 299 300 static void _new(); 301 static void newarray(); 302 static void anewarray(); 303 static void arraylength(); 304 static void checkcast(); 305 static void instanceof(); 306 307 static void athrow(); 308 309 static void monitorenter(); 310 static void monitorexit(); 311 312 static void wide(); 313 static void multianewarray(); 314 315 static void fast_xaccess(TosState state); 316 static void fast_accessfield(TosState state); 317 static void fast_storefield(TosState state); 318 319 static void _breakpoint(); 320 321 static void shouldnotreachhere(); 322 323 // jvmti support 324 static void jvmti_post_field_access(Register cache, Register index, bool is_static, bool has_tos); 325 static void jvmti_post_field_mod(Register cache, Register index, bool is_static); 326 static void jvmti_post_fast_field_mod(); 327 328 // debugging of TemplateGenerator 329 static void transition(TosState tos_in, TosState tos_out);// checks if in/out states expected by template generator correspond to table entries 330 331 // initialization helpers 332 static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)( ), char filler ); 333 static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(int arg ), int arg ); 334 static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(bool arg ), bool arg ); 335 static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(TosState tos), TosState tos); 336 static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(Operation op), Operation op); 337 static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(Condition cc), Condition cc); 338 339 friend class Template; 340 341 // InterpreterMacroAssembler::is_a(), etc., need TemplateTable::call_VM(). 342 friend class InterpreterMacroAssembler; 343 344 public: 345 // Initialization 346 static void initialize(); 347 static void pd_initialize(); 348 349 // Templates 350 static Template* template_for (Bytecodes::Code code) { Bytecodes::check (code); return &_template_table [code]; } 351 static Template* template_for_wide(Bytecodes::Code code) { Bytecodes::wide_check(code); return &_template_table_wide[code]; } 352 353 // Platform specifics 354 #include CPU_HEADER(templateTable) 355 356 }; 357 #endif /* !CC_INTERP */ 358 359 #endif // SHARE_VM_INTERPRETER_TEMPLATETABLE_HPP