src/cpu/ppc/vm/methodHandles_ppc.cpp

Fri, 02 Aug 2013 16:46:45 +0200

author
goetz
date
Fri, 02 Aug 2013 16:46:45 +0200
changeset 6458
ec28f9c041ff
child 6495
67fa91961822
permissions
-rw-r--r--

8019972: PPC64 (part 9): platform files for interpreter only VM.
Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs.
Reviewed-by: kvn

goetz@6458 1 /*
goetz@6458 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
goetz@6458 3 * Copyright 2012, 2013 SAP AG. All rights reserved.
goetz@6458 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
goetz@6458 5 *
goetz@6458 6 * This code is free software; you can redistribute it and/or modify it
goetz@6458 7 * under the terms of the GNU General Public License version 2 only, as
goetz@6458 8 * published by the Free Software Foundation.
goetz@6458 9 *
goetz@6458 10 * This code is distributed in the hope that it will be useful, but WITHOUT
goetz@6458 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
goetz@6458 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
goetz@6458 13 * version 2 for more details (a copy is included in the LICENSE file that
goetz@6458 14 * accompanied this code).
goetz@6458 15 *
goetz@6458 16 * You should have received a copy of the GNU General Public License version
goetz@6458 17 * 2 along with this work; if not, write to the Free Software Foundation,
goetz@6458 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
goetz@6458 19 *
goetz@6458 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
goetz@6458 21 * or visit www.oracle.com if you need additional information or have any
goetz@6458 22 * questions.
goetz@6458 23 *
goetz@6458 24 */
goetz@6458 25
goetz@6458 26 #include "precompiled.hpp"
goetz@6458 27 #include "asm/macroAssembler.inline.hpp"
goetz@6458 28 #include "interpreter/interpreter.hpp"
goetz@6458 29 #include "memory/allocation.inline.hpp"
goetz@6458 30 #include "prims/methodHandles.hpp"
goetz@6458 31
goetz@6458 32 #define __ _masm->
goetz@6458 33
goetz@6458 34 #ifdef PRODUCT
goetz@6458 35 #define BLOCK_COMMENT(str) // nothing
goetz@6458 36 #define STOP(error) stop(error)
goetz@6458 37 #else
goetz@6458 38 #define BLOCK_COMMENT(str) __ block_comment(str)
goetz@6458 39 #define STOP(error) block_comment(error); __ stop(error)
goetz@6458 40 #endif
goetz@6458 41
goetz@6458 42 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
goetz@6458 43
goetz@6458 44 // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant.
goetz@6458 45 inline static RegisterOrConstant constant(int value) {
goetz@6458 46 return RegisterOrConstant(value);
goetz@6458 47 }
goetz@6458 48
goetz@6458 49 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg) {
goetz@6458 50 if (VerifyMethodHandles)
goetz@6458 51 verify_klass(_masm, klass_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_Class), temp_reg, temp2_reg,
goetz@6458 52 "MH argument is a Class");
goetz@6458 53 __ ld(klass_reg, java_lang_Class::klass_offset_in_bytes(), klass_reg);
goetz@6458 54 }
goetz@6458 55
goetz@6458 56 #ifdef ASSERT
goetz@6458 57 static int check_nonzero(const char* xname, int x) {
goetz@6458 58 assert(x != 0, err_msg("%s should be nonzero", xname));
goetz@6458 59 return x;
goetz@6458 60 }
goetz@6458 61 #define NONZERO(x) check_nonzero(#x, x)
goetz@6458 62 #else //ASSERT
goetz@6458 63 #define NONZERO(x) (x)
goetz@6458 64 #endif //ASSERT
goetz@6458 65
goetz@6458 66 #ifdef ASSERT
goetz@6458 67 void MethodHandles::verify_klass(MacroAssembler* _masm,
goetz@6458 68 Register obj_reg, SystemDictionary::WKID klass_id,
goetz@6458 69 Register temp_reg, Register temp2_reg,
goetz@6458 70 const char* error_message) {
goetz@6458 71 Klass** klass_addr = SystemDictionary::well_known_klass_addr(klass_id);
goetz@6458 72 KlassHandle klass = SystemDictionary::well_known_klass(klass_id);
goetz@6458 73 Label L_ok, L_bad;
goetz@6458 74 BLOCK_COMMENT("verify_klass {");
goetz@6458 75 __ verify_oop(obj_reg);
goetz@6458 76 __ cmpdi(CCR0, obj_reg, 0);
goetz@6458 77 __ beq(CCR0, L_bad);
goetz@6458 78 __ load_klass(temp_reg, obj_reg);
goetz@6458 79 __ load_const_optimized(temp2_reg, (address) klass_addr);
goetz@6458 80 __ ld(temp2_reg, 0, temp2_reg);
goetz@6458 81 __ cmpd(CCR0, temp_reg, temp2_reg);
goetz@6458 82 __ beq(CCR0, L_ok);
goetz@6458 83 __ ld(temp_reg, klass->super_check_offset(), temp_reg);
goetz@6458 84 __ cmpd(CCR0, temp_reg, temp2_reg);
goetz@6458 85 __ beq(CCR0, L_ok);
goetz@6458 86 __ BIND(L_bad);
goetz@6458 87 __ stop(error_message);
goetz@6458 88 __ BIND(L_ok);
goetz@6458 89 BLOCK_COMMENT("} verify_klass");
goetz@6458 90 }
goetz@6458 91
goetz@6458 92 void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) {
goetz@6458 93 Label L;
goetz@6458 94 BLOCK_COMMENT("verify_ref_kind {");
goetz@6458 95 __ load_sized_value(temp, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes()), member_reg,
goetz@6458 96 sizeof(u4), /*is_signed*/ false);
goetz@6458 97 // assert(sizeof(u4) == sizeof(java.lang.invoke.MemberName.flags), "");
goetz@6458 98 __ srwi( temp, temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT);
goetz@6458 99 __ andi(temp, temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK);
goetz@6458 100 __ cmpwi(CCR1, temp, ref_kind);
goetz@6458 101 __ beq(CCR1, L);
goetz@6458 102 { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal);
goetz@6458 103 jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind);
goetz@6458 104 if (ref_kind == JVM_REF_invokeVirtual ||
goetz@6458 105 ref_kind == JVM_REF_invokeSpecial)
goetz@6458 106 // could do this for all ref_kinds, but would explode assembly code size
goetz@6458 107 trace_method_handle(_masm, buf);
goetz@6458 108 __ stop(buf);
goetz@6458 109 }
goetz@6458 110 BLOCK_COMMENT("} verify_ref_kind");
goetz@6458 111 __ BIND(L);
goetz@6458 112 }
goetz@6458 113
goetz@6458 114 #endif // ASSERT
goetz@6458 115
goetz@6458 116 void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp,
goetz@6458 117 bool for_compiler_entry) {
goetz@6458 118 assert(method == R19_method, "interpreter calling convention");
goetz@6458 119 assert_different_registers(method, target, temp);
goetz@6458 120
goetz@6458 121 if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) {
goetz@6458 122 Label run_compiled_code;
goetz@6458 123 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
goetz@6458 124 // compiled code in threads for which the event is enabled. Check here for
goetz@6458 125 // interp_only_mode if these events CAN be enabled.
goetz@6458 126 __ verify_thread();
goetz@6458 127 __ lwz(temp, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread);
goetz@6458 128 __ cmplwi(CCR0, temp, 0);
goetz@6458 129 __ beq(CCR0, run_compiled_code);
goetz@6458 130 __ ld(target, in_bytes(Method::interpreter_entry_offset()), R19_method);
goetz@6458 131 __ mtctr(target);
goetz@6458 132 __ bctr();
goetz@6458 133 __ BIND(run_compiled_code);
goetz@6458 134 }
goetz@6458 135
goetz@6458 136 const ByteSize entry_offset = for_compiler_entry ? Method::from_compiled_offset() :
goetz@6458 137 Method::from_interpreted_offset();
goetz@6458 138 __ ld(target, in_bytes(entry_offset), R19_method);
goetz@6458 139 __ mtctr(target);
goetz@6458 140 __ bctr();
goetz@6458 141 }
goetz@6458 142
goetz@6458 143
goetz@6458 144 void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm,
goetz@6458 145 Register recv, Register method_temp,
goetz@6458 146 Register temp2, Register temp3,
goetz@6458 147 bool for_compiler_entry) {
goetz@6458 148 BLOCK_COMMENT("jump_to_lambda_form {");
goetz@6458 149 // This is the initial entry point of a lazy method handle.
goetz@6458 150 // After type checking, it picks up the invoker from the LambdaForm.
goetz@6458 151 assert_different_registers(recv, method_temp, temp2); // temp3 is only passed on
goetz@6458 152 assert(method_temp == R19_method, "required register for loading method");
goetz@6458 153
goetz@6458 154 // Load the invoker, as MH -> MH.form -> LF.vmentry
goetz@6458 155 __ verify_oop(recv);
goetz@6458 156 __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes()), recv);
goetz@6458 157 __ verify_oop(method_temp);
goetz@6458 158 __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes()), method_temp);
goetz@6458 159 __ verify_oop(method_temp);
goetz@6458 160 // the following assumes that a Method* is normally compressed in the vmtarget field:
goetz@6458 161 __ ld(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), method_temp);
goetz@6458 162
goetz@6458 163 if (VerifyMethodHandles && !for_compiler_entry) {
goetz@6458 164 // make sure recv is already on stack
goetz@6458 165 __ ld(temp2, in_bytes(Method::const_offset()), method_temp);
goetz@6458 166 __ load_sized_value(temp2, in_bytes(ConstMethod::size_of_parameters_offset()), temp2,
goetz@6458 167 sizeof(u2), /*is_signed*/ false);
goetz@6458 168 // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), "");
goetz@6458 169 Label L;
goetz@6458 170 __ ld(temp2, __ argument_offset(temp2, temp2, 0), R17_tos);
goetz@6458 171 __ cmpd(CCR1, temp2, recv);
goetz@6458 172 __ beq(CCR1, L);
goetz@6458 173 __ stop("receiver not on stack");
goetz@6458 174 __ BIND(L);
goetz@6458 175 }
goetz@6458 176
goetz@6458 177 jump_from_method_handle(_masm, method_temp, temp2, temp3, for_compiler_entry);
goetz@6458 178 BLOCK_COMMENT("} jump_to_lambda_form");
goetz@6458 179 }
goetz@6458 180
goetz@6458 181
goetz@6458 182
goetz@6458 183 // Code generation
goetz@6458 184 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm,
goetz@6458 185 vmIntrinsics::ID iid) {
goetz@6458 186 const bool not_for_compiler_entry = false; // this is the interpreter entry
goetz@6458 187 assert(is_signature_polymorphic(iid), "expected invoke iid");
goetz@6458 188 if (iid == vmIntrinsics::_invokeGeneric ||
goetz@6458 189 iid == vmIntrinsics::_compiledLambdaForm) {
goetz@6458 190 // Perhaps surprisingly, the symbolic references visible to Java are not directly used.
goetz@6458 191 // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod.
goetz@6458 192 // They all allow an appendix argument.
goetz@6458 193 __ stop("Should not reach here"); // empty stubs make SG sick
goetz@6458 194 return NULL;
goetz@6458 195 }
goetz@6458 196
goetz@6458 197 Register argbase = R17_tos; // parameter (preserved)
goetz@6458 198 Register argslot = R3;
goetz@6458 199 Register temp1 = R6;
goetz@6458 200 Register param_size = R7;
goetz@6458 201
goetz@6458 202 // here's where control starts out:
goetz@6458 203 __ align(CodeEntryAlignment);
goetz@6458 204 address entry_point = __ pc();
goetz@6458 205
goetz@6458 206 if (VerifyMethodHandles) {
goetz@6458 207 Label L;
goetz@6458 208 BLOCK_COMMENT("verify_intrinsic_id {");
goetz@6458 209 __ load_sized_value(temp1, Method::intrinsic_id_offset_in_bytes(), R19_method,
goetz@6458 210 sizeof(u1), /*is_signed*/ false);
goetz@6458 211 // assert(sizeof(u1) == sizeof(Method::_intrinsic_id), "");
goetz@6458 212 __ cmpwi(CCR1, temp1, (int) iid);
goetz@6458 213 __ beq(CCR1, L);
goetz@6458 214 if (iid == vmIntrinsics::_linkToVirtual ||
goetz@6458 215 iid == vmIntrinsics::_linkToSpecial) {
goetz@6458 216 // could do this for all kinds, but would explode assembly code size
goetz@6458 217 trace_method_handle(_masm, "bad Method*:intrinsic_id");
goetz@6458 218 }
goetz@6458 219 __ stop("bad Method*::intrinsic_id");
goetz@6458 220 __ BIND(L);
goetz@6458 221 BLOCK_COMMENT("} verify_intrinsic_id");
goetz@6458 222 }
goetz@6458 223
goetz@6458 224 // First task: Find out how big the argument list is.
goetz@6458 225 int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid);
goetz@6458 226 assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic");
goetz@6458 227 if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) {
goetz@6458 228 __ ld(param_size, in_bytes(Method::const_offset()), R19_method);
goetz@6458 229 __ load_sized_value(param_size, in_bytes(ConstMethod::size_of_parameters_offset()), param_size,
goetz@6458 230 sizeof(u2), /*is_signed*/ false);
goetz@6458 231 // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), "");
goetz@6458 232 } else {
goetz@6458 233 DEBUG_ONLY(param_size = noreg);
goetz@6458 234 }
goetz@6458 235
goetz@6458 236 Register tmp_mh = noreg;
goetz@6458 237 if (!is_signature_polymorphic_static(iid)) {
goetz@6458 238 __ ld(tmp_mh = temp1, __ argument_offset(param_size, param_size, 0), argbase);
goetz@6458 239 DEBUG_ONLY(param_size = noreg);
goetz@6458 240 }
goetz@6458 241
goetz@6458 242 if (TraceMethodHandles) {
goetz@6458 243 if (tmp_mh != noreg)
goetz@6458 244 __ mr(R23_method_handle, tmp_mh); // make stub happy
goetz@6458 245 trace_method_handle_interpreter_entry(_masm, iid);
goetz@6458 246 }
goetz@6458 247
goetz@6458 248 if (iid == vmIntrinsics::_invokeBasic) {
goetz@6458 249 generate_method_handle_dispatch(_masm, iid, tmp_mh, noreg, not_for_compiler_entry);
goetz@6458 250
goetz@6458 251 } else {
goetz@6458 252 // Adjust argument list by popping the trailing MemberName argument.
goetz@6458 253 Register tmp_recv = noreg;
goetz@6458 254 if (MethodHandles::ref_kind_has_receiver(ref_kind)) {
goetz@6458 255 // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack.
goetz@6458 256 __ ld(tmp_recv = temp1, __ argument_offset(param_size, param_size, 0), argbase);
goetz@6458 257 DEBUG_ONLY(param_size = noreg);
goetz@6458 258 }
goetz@6458 259 Register R19_member = R19_method; // MemberName ptr; incoming method ptr is dead now
goetz@6458 260 __ ld(R19_member, RegisterOrConstant((intptr_t)8), argbase);
goetz@6458 261 __ add(argbase, Interpreter::stackElementSize, argbase);
goetz@6458 262 generate_method_handle_dispatch(_masm, iid, tmp_recv, R19_member, not_for_compiler_entry);
goetz@6458 263 }
goetz@6458 264
goetz@6458 265 return entry_point;
goetz@6458 266 }
goetz@6458 267
goetz@6458 268 void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
goetz@6458 269 vmIntrinsics::ID iid,
goetz@6458 270 Register receiver_reg,
goetz@6458 271 Register member_reg,
goetz@6458 272 bool for_compiler_entry) {
goetz@6458 273 assert(is_signature_polymorphic(iid), "expected invoke iid");
goetz@6458 274 Register temp1 = (for_compiler_entry ? R21_tmp1 : R7);
goetz@6458 275 Register temp2 = (for_compiler_entry ? R22_tmp2 : R8);
goetz@6458 276 Register temp3 = (for_compiler_entry ? R23_tmp3 : R9);
goetz@6458 277 Register temp4 = (for_compiler_entry ? R24_tmp4 : R10);
goetz@6458 278 if (receiver_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, receiver_reg);
goetz@6458 279 if (member_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, member_reg);
goetz@6458 280
goetz@6458 281 if (iid == vmIntrinsics::_invokeBasic) {
goetz@6458 282 // indirect through MH.form.vmentry.vmtarget
goetz@6458 283 jump_to_lambda_form(_masm, receiver_reg, R19_method, temp1, temp2, for_compiler_entry);
goetz@6458 284 } else {
goetz@6458 285 // The method is a member invoker used by direct method handles.
goetz@6458 286 if (VerifyMethodHandles) {
goetz@6458 287 // make sure the trailing argument really is a MemberName (caller responsibility)
goetz@6458 288 verify_klass(_masm, member_reg, SystemDictionary::WK_KLASS_ENUM_NAME(MemberName_klass),
goetz@6458 289 temp1, temp2,
goetz@6458 290 "MemberName required for invokeVirtual etc.");
goetz@6458 291 }
goetz@6458 292
goetz@6458 293 Register temp1_recv_klass = temp1;
goetz@6458 294 if (iid != vmIntrinsics::_linkToStatic) {
goetz@6458 295 __ verify_oop(receiver_reg);
goetz@6458 296 if (iid == vmIntrinsics::_linkToSpecial) {
goetz@6458 297 // Don't actually load the klass; just null-check the receiver.
goetz@6458 298 __ null_check_throw(receiver_reg, 0, temp1, StubRoutines::throw_NullPointerException_at_call_entry());
goetz@6458 299 } else {
goetz@6458 300 // load receiver klass itself
goetz@6458 301 __ null_check_throw(receiver_reg, oopDesc::klass_offset_in_bytes(),
goetz@6458 302 temp1, StubRoutines::throw_NullPointerException_at_call_entry());
goetz@6458 303 __ load_klass(temp1_recv_klass, receiver_reg);
goetz@6458 304 __ verify_klass_ptr(temp1_recv_klass);
goetz@6458 305 }
goetz@6458 306 BLOCK_COMMENT("check_receiver {");
goetz@6458 307 // The receiver for the MemberName must be in receiver_reg.
goetz@6458 308 // Check the receiver against the MemberName.clazz
goetz@6458 309 if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) {
goetz@6458 310 // Did not load it above...
goetz@6458 311 __ load_klass(temp1_recv_klass, receiver_reg);
goetz@6458 312 __ verify_klass_ptr(temp1_recv_klass);
goetz@6458 313 }
goetz@6458 314 if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) {
goetz@6458 315 Label L_ok;
goetz@6458 316 Register temp2_defc = temp2;
goetz@6458 317 __ load_heap_oop_not_null(temp2_defc, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg);
goetz@6458 318 load_klass_from_Class(_masm, temp2_defc, temp3, temp4);
goetz@6458 319 __ verify_klass_ptr(temp2_defc);
goetz@6458 320 __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, temp4, L_ok);
goetz@6458 321 // If we get here, the type check failed!
goetz@6458 322 __ stop("receiver class disagrees with MemberName.clazz");
goetz@6458 323 __ BIND(L_ok);
goetz@6458 324 }
goetz@6458 325 BLOCK_COMMENT("} check_receiver");
goetz@6458 326 }
goetz@6458 327 if (iid == vmIntrinsics::_linkToSpecial ||
goetz@6458 328 iid == vmIntrinsics::_linkToStatic) {
goetz@6458 329 DEBUG_ONLY(temp1_recv_klass = noreg); // these guys didn't load the recv_klass
goetz@6458 330 }
goetz@6458 331
goetz@6458 332 // Live registers at this point:
goetz@6458 333 // member_reg - MemberName that was the trailing argument
goetz@6458 334 // temp1_recv_klass - klass of stacked receiver, if needed
goetz@6458 335 // O5_savedSP - interpreter linkage (if interpreted)
goetz@6458 336 // O0..O5 - compiler arguments (if compiled)
goetz@6458 337
goetz@6458 338 Label L_incompatible_class_change_error;
goetz@6458 339 switch (iid) {
goetz@6458 340 case vmIntrinsics::_linkToSpecial:
goetz@6458 341 if (VerifyMethodHandles) {
goetz@6458 342 verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp2);
goetz@6458 343 }
goetz@6458 344 __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg);
goetz@6458 345 break;
goetz@6458 346
goetz@6458 347 case vmIntrinsics::_linkToStatic:
goetz@6458 348 if (VerifyMethodHandles) {
goetz@6458 349 verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp2);
goetz@6458 350 }
goetz@6458 351 __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg);
goetz@6458 352 break;
goetz@6458 353
goetz@6458 354 case vmIntrinsics::_linkToVirtual:
goetz@6458 355 {
goetz@6458 356 // same as TemplateTable::invokevirtual,
goetz@6458 357 // minus the CP setup and profiling:
goetz@6458 358
goetz@6458 359 if (VerifyMethodHandles) {
goetz@6458 360 verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp2);
goetz@6458 361 }
goetz@6458 362
goetz@6458 363 // pick out the vtable index from the MemberName, and then we can discard it:
goetz@6458 364 Register temp2_index = temp2;
goetz@6458 365 __ ld(temp2_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg);
goetz@6458 366
goetz@6458 367 if (VerifyMethodHandles) {
goetz@6458 368 Label L_index_ok;
goetz@6458 369 __ cmpdi(CCR1, temp2_index, 0);
goetz@6458 370 __ bge(CCR1, L_index_ok);
goetz@6458 371 __ stop("no virtual index");
goetz@6458 372 __ BIND(L_index_ok);
goetz@6458 373 }
goetz@6458 374
goetz@6458 375 // Note: The verifier invariants allow us to ignore MemberName.clazz and vmtarget
goetz@6458 376 // at this point. And VerifyMethodHandles has already checked clazz, if needed.
goetz@6458 377
goetz@6458 378 // get target Method* & entry point
goetz@6458 379 __ lookup_virtual_method(temp1_recv_klass, temp2_index, R19_method);
goetz@6458 380 break;
goetz@6458 381 }
goetz@6458 382
goetz@6458 383 case vmIntrinsics::_linkToInterface:
goetz@6458 384 {
goetz@6458 385 // same as TemplateTable::invokeinterface
goetz@6458 386 // (minus the CP setup and profiling, with different argument motion)
goetz@6458 387 if (VerifyMethodHandles) {
goetz@6458 388 verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp2);
goetz@6458 389 }
goetz@6458 390
goetz@6458 391 Register temp2_intf = temp2;
goetz@6458 392 __ load_heap_oop_not_null(temp2_intf, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg);
goetz@6458 393 load_klass_from_Class(_masm, temp2_intf, temp3, temp4);
goetz@6458 394 __ verify_klass_ptr(temp2_intf);
goetz@6458 395
goetz@6458 396 Register vtable_index = R19_method;
goetz@6458 397 __ ld(vtable_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg);
goetz@6458 398 if (VerifyMethodHandles) {
goetz@6458 399 Label L_index_ok;
goetz@6458 400 __ cmpdi(CCR1, vtable_index, 0);
goetz@6458 401 __ bge(CCR1, L_index_ok);
goetz@6458 402 __ stop("invalid vtable index for MH.invokeInterface");
goetz@6458 403 __ BIND(L_index_ok);
goetz@6458 404 }
goetz@6458 405
goetz@6458 406 // given intf, index, and recv klass, dispatch to the implementation method
goetz@6458 407 __ lookup_interface_method(temp1_recv_klass, temp2_intf,
goetz@6458 408 // note: next two args must be the same:
goetz@6458 409 vtable_index, R19_method,
goetz@6458 410 temp3, temp4,
goetz@6458 411 L_incompatible_class_change_error);
goetz@6458 412 break;
goetz@6458 413 }
goetz@6458 414
goetz@6458 415 default:
goetz@6458 416 fatal(err_msg_res("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid)));
goetz@6458 417 break;
goetz@6458 418 }
goetz@6458 419
goetz@6458 420 // Live at this point:
goetz@6458 421 // R19_method
goetz@6458 422 // O5_savedSP (if interpreted)
goetz@6458 423
goetz@6458 424 // After figuring out which concrete method to call, jump into it.
goetz@6458 425 // Note that this works in the interpreter with no data motion.
goetz@6458 426 // But the compiled version will require that rcx_recv be shifted out.
goetz@6458 427 __ verify_method_ptr(R19_method);
goetz@6458 428 jump_from_method_handle(_masm, R19_method, temp1, temp2, for_compiler_entry);
goetz@6458 429
goetz@6458 430 if (iid == vmIntrinsics::_linkToInterface) {
goetz@6458 431 __ BIND(L_incompatible_class_change_error);
goetz@6458 432 __ load_const_optimized(temp1, StubRoutines::throw_IncompatibleClassChangeError_entry());
goetz@6458 433 __ mtctr(temp1);
goetz@6458 434 __ bctr();
goetz@6458 435 }
goetz@6458 436 }
goetz@6458 437 }
goetz@6458 438
goetz@6458 439 #ifndef PRODUCT
goetz@6458 440 void trace_method_handle_stub(const char* adaptername,
goetz@6458 441 oopDesc* mh,
goetz@6458 442 intptr_t* entry_sp,
goetz@6458 443 intptr_t* saved_regs) {
goetz@6458 444
goetz@6458 445 bool has_mh = (strstr(adaptername, "/static") == NULL &&
goetz@6458 446 strstr(adaptername, "linkTo") == NULL); // static linkers don't have MH
goetz@6458 447 const char* mh_reg_name = has_mh ? "R23_method_handle" : "G23";
goetz@6458 448 tty->print_cr("MH %s %s="INTPTR_FORMAT " sp=" INTPTR_FORMAT,
goetz@6458 449 adaptername, mh_reg_name, (intptr_t) mh, entry_sp);
goetz@6458 450
goetz@6458 451 if (Verbose) {
goetz@6458 452 tty->print_cr("Registers:");
goetz@6458 453 const int abi_offset = frame::abi_112_size / 8;
goetz@6458 454 for (int i = R3->encoding(); i <= R13->encoding(); i++) {
goetz@6458 455 Register r = as_Register(i);
goetz@6458 456 int count = i - R3->encoding();
goetz@6458 457 // The registers are stored in reverse order on the stack (by save_volatile_gprs(R1_SP, abi_112_size)).
goetz@6458 458 tty->print("%3s=" PTR_FORMAT, r->name(), saved_regs[abi_offset + count]);
goetz@6458 459 if ((count + 1) % 4 == 0) {
goetz@6458 460 tty->cr();
goetz@6458 461 } else {
goetz@6458 462 tty->print(", ");
goetz@6458 463 }
goetz@6458 464 }
goetz@6458 465 tty->cr();
goetz@6458 466
goetz@6458 467 {
goetz@6458 468 // dumping last frame with frame::describe
goetz@6458 469
goetz@6458 470 JavaThread* p = JavaThread::active();
goetz@6458 471
goetz@6458 472 ResourceMark rm;
goetz@6458 473 PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here
goetz@6458 474 FrameValues values;
goetz@6458 475
goetz@6458 476 // Note: We want to allow trace_method_handle from any call site.
goetz@6458 477 // While trace_method_handle creates a frame, it may be entered
goetz@6458 478 // without a PC on the stack top (e.g. not just after a call).
goetz@6458 479 // Walking that frame could lead to failures due to that invalid PC.
goetz@6458 480 // => carefully detect that frame when doing the stack walking
goetz@6458 481
goetz@6458 482 // Current C frame
goetz@6458 483 frame cur_frame = os::current_frame();
goetz@6458 484
goetz@6458 485 // Robust search of trace_calling_frame (independant of inlining).
goetz@6458 486 // Assumes saved_regs comes from a pusha in the trace_calling_frame.
goetz@6458 487 assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?");
goetz@6458 488 frame trace_calling_frame = os::get_sender_for_C_frame(&cur_frame);
goetz@6458 489 while (trace_calling_frame.fp() < saved_regs) {
goetz@6458 490 trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame);
goetz@6458 491 }
goetz@6458 492
goetz@6458 493 // safely create a frame and call frame::describe
goetz@6458 494 intptr_t *dump_sp = trace_calling_frame.sender_sp();
goetz@6458 495
goetz@6458 496 frame dump_frame = frame(dump_sp);
goetz@6458 497 dump_frame.describe(values, 1);
goetz@6458 498
goetz@6458 499 values.describe(-1, saved_regs, "raw top of stack");
goetz@6458 500
goetz@6458 501 tty->print_cr("Stack layout:");
goetz@6458 502 values.print(p);
goetz@6458 503 }
goetz@6458 504
goetz@6458 505 if (has_mh && mh->is_oop()) {
goetz@6458 506 mh->print();
goetz@6458 507 if (java_lang_invoke_MethodHandle::is_instance(mh)) {
goetz@6458 508 if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0)
goetz@6458 509 java_lang_invoke_MethodHandle::form(mh)->print();
goetz@6458 510 }
goetz@6458 511 }
goetz@6458 512 }
goetz@6458 513 }
goetz@6458 514
goetz@6458 515 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
goetz@6458 516 if (!TraceMethodHandles) return;
goetz@6458 517
goetz@6458 518 BLOCK_COMMENT("trace_method_handle {");
goetz@6458 519
goetz@6458 520 int nbytes_save = 10 * 8; // 10 volatile gprs
goetz@6458 521 __ save_LR_CR(R0);
goetz@6458 522 __ mr(R0, R1_SP); // saved_sp
goetz@6458 523 assert(Assembler::is_simm(-nbytes_save, 16), "Overwriting R0");
goetz@6458 524 // push_frame_abi112 only uses R0 if nbytes_save is wider than 16 bit
goetz@6458 525 __ push_frame_abi112(nbytes_save, R0);
goetz@6458 526 __ save_volatile_gprs(R1_SP, frame::abi_112_size); // Except R0.
goetz@6458 527
goetz@6458 528 __ load_const(R3_ARG1, (address)adaptername);
goetz@6458 529 __ mr(R4_ARG2, R23_method_handle);
goetz@6458 530 __ mr(R5_ARG3, R0); // saved_sp
goetz@6458 531 __ mr(R6_ARG4, R1_SP);
goetz@6458 532 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub));
goetz@6458 533
goetz@6458 534 __ restore_volatile_gprs(R1_SP, 112); // except R0
goetz@6458 535 __ pop_frame();
goetz@6458 536 __ restore_LR_CR(R0);
goetz@6458 537
goetz@6458 538 BLOCK_COMMENT("} trace_method_handle");
goetz@6458 539 }
goetz@6458 540 #endif // PRODUCT

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