1 /* 2 * Copyright (c) 2003, 2009, 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 #include "incls/_precompiled.incl" 26 #include "incls/_interpreter_x86_64.cpp.incl" 27 28 #define __ _masm-> 29 30 31 #ifdef _WIN64 32 address AbstractInterpreterGenerator::generate_slow_signature_handler() { 33 address entry = __ pc(); 34 35 // rbx: method 36 // r14: pointer to locals 37 // c_rarg3: first stack arg - wordSize 38 __ mov(c_rarg3, rsp); 39 // adjust rsp 40 __ subptr(rsp, 4 * wordSize); 41 __ call_VM(noreg, 42 CAST_FROM_FN_PTR(address, 43 InterpreterRuntime::slow_signature_handler), 44 rbx, r14, c_rarg3); 45 46 // rax: result handler 47 48 // Stack layout: 49 // rsp: 3 integer or float args (if static first is unused) 50 // 1 float/double identifiers 51 // return address 52 // stack args 53 // garbage 54 // expression stack bottom 55 // bcp (NULL) 56 // ... 57 58 // Do FP first so we can use c_rarg3 as temp 59 __ movl(c_rarg3, Address(rsp, 3 * wordSize)); // float/double identifiers 60 61 for ( int i= 0; i < Argument::n_int_register_parameters_c-1; i++ ) { 62 XMMRegister floatreg = as_XMMRegister(i+1); 63 Label isfloatordouble, isdouble, next; 64 65 __ testl(c_rarg3, 1 << (i*2)); // Float or Double? 66 __ jcc(Assembler::notZero, isfloatordouble); 67 68 // Do Int register here 69 switch ( i ) { 70 case 0: 71 __ movl(rscratch1, Address(rbx, methodOopDesc::access_flags_offset())); 72 __ testl(rscratch1, JVM_ACC_STATIC); 73 __ cmovptr(Assembler::zero, c_rarg1, Address(rsp, 0)); 74 break; 75 case 1: 76 __ movptr(c_rarg2, Address(rsp, wordSize)); 77 break; 78 case 2: 79 __ movptr(c_rarg3, Address(rsp, 2 * wordSize)); 80 break; 81 default: 82 break; 83 } 84 85 __ jmp (next); 86 87 __ bind(isfloatordouble); 88 __ testl(c_rarg3, 1 << ((i*2)+1)); // Double? 89 __ jcc(Assembler::notZero, isdouble); 90 91 // Do Float Here 92 __ movflt(floatreg, Address(rsp, i * wordSize)); 93 __ jmp(next); 94 95 // Do Double here 96 __ bind(isdouble); 97 __ movdbl(floatreg, Address(rsp, i * wordSize)); 98 99 __ bind(next); 100 } 101 102 103 // restore rsp 104 __ addptr(rsp, 4 * wordSize); 105 106 __ ret(0); 107 108 return entry; 109 } 110 #else 111 address AbstractInterpreterGenerator::generate_slow_signature_handler() { 112 address entry = __ pc(); 113 114 // rbx: method 115 // r14: pointer to locals 116 // c_rarg3: first stack arg - wordSize 117 __ mov(c_rarg3, rsp); 118 // adjust rsp 119 __ subptr(rsp, 14 * wordSize); 120 __ call_VM(noreg, 121 CAST_FROM_FN_PTR(address, 122 InterpreterRuntime::slow_signature_handler), 123 rbx, r14, c_rarg3); 124 125 // rax: result handler 126 127 // Stack layout: 128 // rsp: 5 integer args (if static first is unused) 129 // 1 float/double identifiers 130 // 8 double args 131 // return address 132 // stack args 133 // garbage 134 // expression stack bottom 135 // bcp (NULL) 136 // ... 137 138 // Do FP first so we can use c_rarg3 as temp 139 __ movl(c_rarg3, Address(rsp, 5 * wordSize)); // float/double identifiers 140 141 for (int i = 0; i < Argument::n_float_register_parameters_c; i++) { 142 const XMMRegister r = as_XMMRegister(i); 143 144 Label d, done; 145 146 __ testl(c_rarg3, 1 << i); 147 __ jcc(Assembler::notZero, d); 148 __ movflt(r, Address(rsp, (6 + i) * wordSize)); 149 __ jmp(done); 150 __ bind(d); 151 __ movdbl(r, Address(rsp, (6 + i) * wordSize)); 152 __ bind(done); 153 } 154 155 // Now handle integrals. Only do c_rarg1 if not static. 156 __ movl(c_rarg3, Address(rbx, methodOopDesc::access_flags_offset())); 157 __ testl(c_rarg3, JVM_ACC_STATIC); 158 __ cmovptr(Assembler::zero, c_rarg1, Address(rsp, 0)); 159 160 __ movptr(c_rarg2, Address(rsp, wordSize)); 161 __ movptr(c_rarg3, Address(rsp, 2 * wordSize)); 162 __ movptr(c_rarg4, Address(rsp, 3 * wordSize)); 163 __ movptr(c_rarg5, Address(rsp, 4 * wordSize)); 164 165 // restore rsp 166 __ addptr(rsp, 14 * wordSize); 167 168 __ ret(0); 169 170 return entry; 171 } 172 #endif 173 174 175 // 176 // Various method entries 177 // 178 179 address InterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) { 180 181 // rbx,: methodOop 182 // rcx: scratrch 183 // r13: sender sp 184 185 if (!InlineIntrinsics) return NULL; // Generate a vanilla entry 186 187 address entry_point = __ pc(); 188 189 // These don't need a safepoint check because they aren't virtually 190 // callable. We won't enter these intrinsics from compiled code. 191 // If in the future we added an intrinsic which was virtually callable 192 // we'd have to worry about how to safepoint so that this code is used. 193 194 // mathematical functions inlined by compiler 195 // (interpreter must provide identical implementation 196 // in order to avoid monotonicity bugs when switching 197 // from interpreter to compiler in the middle of some 198 // computation) 199 // 200 // stack: [ ret adr ] <-- rsp 201 // [ lo(arg) ] 202 // [ hi(arg) ] 203 // 204 205 // Note: For JDK 1.2 StrictMath doesn't exist and Math.sin/cos/sqrt are 206 // native methods. Interpreter::method_kind(...) does a check for 207 // native methods first before checking for intrinsic methods and 208 // thus will never select this entry point. Make sure it is not 209 // called accidentally since the SharedRuntime entry points will 210 // not work for JDK 1.2. 211 // 212 // We no longer need to check for JDK 1.2 since it's EOL'ed. 213 // The following check existed in pre 1.6 implementation, 214 // if (Universe::is_jdk12x_version()) { 215 // __ should_not_reach_here(); 216 // } 217 // Universe::is_jdk12x_version() always returns false since 218 // the JDK version is not yet determined when this method is called. 219 // This method is called during interpreter_init() whereas 220 // JDK version is only determined when universe2_init() is called. 221 222 // Note: For JDK 1.3 StrictMath exists and Math.sin/cos/sqrt are 223 // java methods. Interpreter::method_kind(...) will select 224 // this entry point for the corresponding methods in JDK 1.3. 225 // get argument 226 227 if (kind == Interpreter::java_lang_math_sqrt) { 228 __ sqrtsd(xmm0, Address(rsp, wordSize)); 229 } else { 230 __ fld_d(Address(rsp, wordSize)); 231 switch (kind) { 232 case Interpreter::java_lang_math_sin : 233 __ trigfunc('s'); 234 break; 235 case Interpreter::java_lang_math_cos : 236 __ trigfunc('c'); 237 break; 238 case Interpreter::java_lang_math_tan : 239 __ trigfunc('t'); 240 break; 241 case Interpreter::java_lang_math_abs: 242 __ fabs(); 243 break; 244 case Interpreter::java_lang_math_log: 245 __ flog(); 246 break; 247 case Interpreter::java_lang_math_log10: 248 __ flog10(); 249 break; 250 default : 251 ShouldNotReachHere(); 252 } 253 254 // return double result in xmm0 for interpreter and compilers. 255 __ subptr(rsp, 2*wordSize); 256 // Round to 64bit precision 257 __ fstp_d(Address(rsp, 0)); 258 __ movdbl(xmm0, Address(rsp, 0)); 259 __ addptr(rsp, 2*wordSize); 260 } 261 262 263 __ pop(rax); 264 __ mov(rsp, r13); 265 __ jmp(rax); 266 267 return entry_point; 268 } 269 270 271 // Abstract method entry 272 // Attempt to execute abstract method. Throw exception 273 address InterpreterGenerator::generate_abstract_entry(void) { 274 // rbx: methodOop 275 // r13: sender SP 276 277 address entry_point = __ pc(); 278 279 // abstract method entry 280 281 // pop return address, reset last_sp to NULL 282 __ empty_expression_stack(); 283 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) 284 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) 285 286 // throw exception 287 __ call_VM(noreg, CAST_FROM_FN_PTR(address, 288 InterpreterRuntime::throw_AbstractMethodError)); 289 // the call_VM checks for exception, so we should never return here. 290 __ should_not_reach_here(); 291 292 return entry_point; 293 } 294 295 296 // Method handle invoker 297 // Dispatch a method of the form java.dyn.MethodHandles::invoke(...) 298 address InterpreterGenerator::generate_method_handle_entry(void) { 299 if (!EnableMethodHandles) { 300 return generate_abstract_entry(); 301 } 302 303 address entry_point = MethodHandles::generate_method_handle_interpreter_entry(_masm); 304 305 return entry_point; 306 } 307 308 309 // Empty method, generate a very fast return. 310 311 address InterpreterGenerator::generate_empty_entry(void) { 312 // rbx: methodOop 313 // r13: sender sp must set sp to this value on return 314 315 if (!UseFastEmptyMethods) { 316 return NULL; 317 } 318 319 address entry_point = __ pc(); 320 321 // If we need a safepoint check, generate full interpreter entry. 322 Label slow_path; 323 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), 324 SafepointSynchronize::_not_synchronized); 325 __ jcc(Assembler::notEqual, slow_path); 326 327 // do nothing for empty methods (do not even increment invocation counter) 328 // Code: _return 329 // _return 330 // return w/o popping parameters 331 __ pop(rax); 332 __ mov(rsp, r13); 333 __ jmp(rax); 334 335 __ bind(slow_path); 336 (void) generate_normal_entry(false); 337 return entry_point; 338 339 } 340 341 // This method tells the deoptimizer how big an interpreted frame must be: 342 int AbstractInterpreter::size_activation(methodOop method, 343 int tempcount, 344 int popframe_extra_args, 345 int moncount, 346 int callee_param_count, 347 int callee_locals, 348 bool is_top_frame) { 349 return layout_activation(method, 350 tempcount, popframe_extra_args, moncount, 351 callee_param_count, callee_locals, 352 (frame*) NULL, (frame*) NULL, is_top_frame); 353 } 354 355 void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) { 356 357 // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in 358 // the days we had adapter frames. When we deoptimize a situation where a 359 // compiled caller calls a compiled caller will have registers it expects 360 // to survive the call to the callee. If we deoptimize the callee the only 361 // way we can restore these registers is to have the oldest interpreter 362 // frame that we create restore these values. That is what this routine 363 // will accomplish. 364 365 // At the moment we have modified c2 to not have any callee save registers 366 // so this problem does not exist and this routine is just a place holder. 367 368 assert(f->is_interpreted_frame(), "must be interpreted"); 369 }