Tue, 11 Sep 2012 20:20:38 -0400
7196681: NPG: Some JSR 292 tests crash in Windows exception handler
Summary: There was a rogue os::breakpoint() call in log_dependency left over from the jsr292 merge. Also changed verify_oop() calls for metadata to verify_{method,klass}_ptr.
Reviewed-by: kvn, twisti
jrose@1145 | 1 | /* |
bdelsart@3445 | 2 | * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved. |
jrose@1145 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
jrose@1145 | 4 | * |
jrose@1145 | 5 | * This code is free software; you can redistribute it and/or modify it |
jrose@1145 | 6 | * under the terms of the GNU General Public License version 2 only, as |
jrose@1145 | 7 | * published by the Free Software Foundation. |
jrose@1145 | 8 | * |
jrose@1145 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
jrose@1145 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
jrose@1145 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
jrose@1145 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
jrose@1145 | 13 | * accompanied this code). |
jrose@1145 | 14 | * |
jrose@1145 | 15 | * You should have received a copy of the GNU General Public License version |
jrose@1145 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
jrose@1145 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
jrose@1145 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
jrose@1145 | 22 | * |
jrose@1145 | 23 | */ |
jrose@1145 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "interpreter/interpreter.hpp" |
stefank@2314 | 27 | #include "memory/allocation.inline.hpp" |
stefank@2314 | 28 | #include "prims/methodHandles.hpp" |
jrose@1145 | 29 | |
jrose@1145 | 30 | #define __ _masm-> |
jrose@1145 | 31 | |
twisti@2204 | 32 | #ifdef PRODUCT |
twisti@2204 | 33 | #define BLOCK_COMMENT(str) /* nothing */ |
twisti@3969 | 34 | #define STOP(error) stop(error) |
twisti@2204 | 35 | #else |
twisti@2204 | 36 | #define BLOCK_COMMENT(str) __ block_comment(str) |
twisti@3969 | 37 | #define STOP(error) block_comment(error); __ stop(error) |
twisti@2204 | 38 | #endif |
twisti@2204 | 39 | |
twisti@2204 | 40 | #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
twisti@2204 | 41 | |
twisti@3969 | 42 | // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant. |
twisti@3969 | 43 | static RegisterOrConstant constant(int value) { |
twisti@3969 | 44 | return RegisterOrConstant(value); |
jrose@1145 | 45 | } |
jrose@1145 | 46 | |
never@2950 | 47 | void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg) { |
never@2950 | 48 | if (VerifyMethodHandles) |
coleenp@4037 | 49 | verify_klass(_masm, klass_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_Class), temp_reg, temp2_reg, |
twisti@3969 | 50 | "MH argument is a Class"); |
coleenp@4037 | 51 | __ ld_ptr(Address(klass_reg, java_lang_Class::klass_offset_in_bytes()), klass_reg); |
never@2950 | 52 | } |
never@2950 | 53 | |
twisti@3969 | 54 | #ifdef ASSERT |
twisti@3969 | 55 | static int check_nonzero(const char* xname, int x) { |
twisti@3969 | 56 | assert(x != 0, err_msg("%s should be nonzero", xname)); |
twisti@3969 | 57 | return x; |
never@2950 | 58 | } |
twisti@3969 | 59 | #define NONZERO(x) check_nonzero(#x, x) |
twisti@3969 | 60 | #else //ASSERT |
twisti@3969 | 61 | #define NONZERO(x) (x) |
twisti@3969 | 62 | #endif //ASSERT |
never@2950 | 63 | |
never@2950 | 64 | #ifdef ASSERT |
never@2950 | 65 | void MethodHandles::verify_klass(MacroAssembler* _masm, |
coleenp@4037 | 66 | Register obj_reg, SystemDictionary::WKID klass_id, |
never@2950 | 67 | Register temp_reg, Register temp2_reg, |
never@2950 | 68 | const char* error_message) { |
coleenp@4037 | 69 | Klass** klass_addr = SystemDictionary::well_known_klass_addr(klass_id); |
coleenp@4037 | 70 | KlassHandle klass = SystemDictionary::well_known_klass(klass_id); |
twisti@3969 | 71 | bool did_save = false; |
twisti@3969 | 72 | if (temp_reg == noreg || temp2_reg == noreg) { |
twisti@3969 | 73 | temp_reg = L1; |
twisti@3969 | 74 | temp2_reg = L2; |
twisti@3969 | 75 | __ save_frame_and_mov(0, obj_reg, L0); |
twisti@3969 | 76 | obj_reg = L0; |
twisti@3969 | 77 | did_save = true; |
twisti@3969 | 78 | } |
never@2950 | 79 | Label L_ok, L_bad; |
never@2950 | 80 | BLOCK_COMMENT("verify_klass {"); |
never@2950 | 81 | __ verify_oop(obj_reg); |
kvn@3037 | 82 | __ br_null_short(obj_reg, Assembler::pn, L_bad); |
never@2950 | 83 | __ load_klass(obj_reg, temp_reg); |
coleenp@4037 | 84 | __ set(ExternalAddress((Metadata**)klass_addr), temp2_reg); |
never@2950 | 85 | __ ld_ptr(Address(temp2_reg, 0), temp2_reg); |
kvn@3037 | 86 | __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok); |
never@2950 | 87 | intptr_t super_check_offset = klass->super_check_offset(); |
never@2950 | 88 | __ ld_ptr(Address(temp_reg, super_check_offset), temp_reg); |
coleenp@4037 | 89 | __ set(ExternalAddress((Metadata**)klass_addr), temp2_reg); |
never@2950 | 90 | __ ld_ptr(Address(temp2_reg, 0), temp2_reg); |
kvn@3037 | 91 | __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok); |
never@2950 | 92 | __ BIND(L_bad); |
twisti@3969 | 93 | if (did_save) __ restore(); |
twisti@3969 | 94 | __ STOP(error_message); |
never@2950 | 95 | __ BIND(L_ok); |
twisti@3969 | 96 | if (did_save) __ restore(); |
never@2950 | 97 | BLOCK_COMMENT("} verify_klass"); |
never@2950 | 98 | } |
twisti@3969 | 99 | |
twisti@3969 | 100 | void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) { |
twisti@3969 | 101 | Label L; |
twisti@3969 | 102 | BLOCK_COMMENT("verify_ref_kind {"); |
twisti@3969 | 103 | __ lduw(Address(member_reg, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes())), temp); |
twisti@3969 | 104 | __ srl( temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT, temp); |
twisti@3969 | 105 | __ and3(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK, temp); |
twisti@3969 | 106 | __ cmp_and_br_short(temp, ref_kind, Assembler::equal, Assembler::pt, L); |
twisti@3969 | 107 | { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal); |
twisti@3969 | 108 | jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind); |
twisti@3969 | 109 | if (ref_kind == JVM_REF_invokeVirtual || |
twisti@3969 | 110 | ref_kind == JVM_REF_invokeSpecial) |
twisti@3969 | 111 | // could do this for all ref_kinds, but would explode assembly code size |
twisti@3969 | 112 | trace_method_handle(_masm, buf); |
twisti@3969 | 113 | __ STOP(buf); |
twisti@3969 | 114 | } |
twisti@3969 | 115 | BLOCK_COMMENT("} verify_ref_kind"); |
twisti@3969 | 116 | __ bind(L); |
twisti@3969 | 117 | } |
twisti@3969 | 118 | |
never@2950 | 119 | #endif // ASSERT |
jrose@1145 | 120 | |
twisti@3969 | 121 | void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp, |
twisti@3969 | 122 | bool for_compiler_entry) { |
never@3005 | 123 | assert(method == G5_method, "interpreter calling convention"); |
twisti@3969 | 124 | |
twisti@3969 | 125 | if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) { |
twisti@3969 | 126 | Label run_compiled_code; |
never@3005 | 127 | // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
never@3005 | 128 | // compiled code in threads for which the event is enabled. Check here for |
never@3005 | 129 | // interp_only_mode if these events CAN be enabled. |
never@3005 | 130 | __ verify_thread(); |
never@3005 | 131 | const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
never@3005 | 132 | __ ld(interp_only, temp); |
twisti@3969 | 133 | __ cmp_and_br_short(temp, 0, Assembler::zero, Assembler::pt, run_compiled_code); |
coleenp@4037 | 134 | __ ld_ptr(G5_method, in_bytes(Method::interpreter_entry_offset()), target); |
twisti@3969 | 135 | __ jmp(target, 0); |
twisti@3969 | 136 | __ delayed()->nop(); |
twisti@3969 | 137 | __ BIND(run_compiled_code); |
twisti@3969 | 138 | // Note: we could fill some delay slots here, but |
twisti@3969 | 139 | // it doesn't matter, since this is interpreter code. |
never@3005 | 140 | } |
twisti@3969 | 141 | |
coleenp@4037 | 142 | const ByteSize entry_offset = for_compiler_entry ? Method::from_compiled_offset() : |
coleenp@4037 | 143 | Method::from_interpreted_offset(); |
twisti@3969 | 144 | __ ld_ptr(G5_method, in_bytes(entry_offset), target); |
never@3005 | 145 | __ jmp(target, 0); |
never@3005 | 146 | __ delayed()->nop(); |
never@3005 | 147 | } |
never@3005 | 148 | |
twisti@3969 | 149 | void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm, |
twisti@3969 | 150 | Register recv, Register method_temp, |
twisti@3969 | 151 | Register temp2, Register temp3, |
twisti@3969 | 152 | bool for_compiler_entry) { |
twisti@3969 | 153 | BLOCK_COMMENT("jump_to_lambda_form {"); |
twisti@3969 | 154 | // This is the initial entry point of a lazy method handle. |
twisti@3969 | 155 | // After type checking, it picks up the invoker from the LambdaForm. |
twisti@3969 | 156 | assert_different_registers(recv, method_temp, temp2, temp3); |
twisti@3969 | 157 | assert(method_temp == G5_method, "required register for loading method"); |
twisti@3969 | 158 | |
twisti@3969 | 159 | //NOT_PRODUCT({ FlagSetting fs(TraceMethodHandles, true); trace_method_handle(_masm, "LZMH"); }); |
twisti@3969 | 160 | |
twisti@3969 | 161 | // Load the invoker, as MH -> MH.form -> LF.vmentry |
twisti@3969 | 162 | __ verify_oop(recv); |
twisti@3969 | 163 | __ load_heap_oop(Address(recv, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes())), method_temp); |
twisti@3969 | 164 | __ verify_oop(method_temp); |
twisti@3969 | 165 | __ load_heap_oop(Address(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes())), method_temp); |
twisti@3969 | 166 | __ verify_oop(method_temp); |
coleenp@4037 | 167 | // the following assumes that a Method* is normally compressed in the vmtarget field: |
coleenp@4037 | 168 | __ ld_ptr(Address(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes())), method_temp); |
twisti@3969 | 169 | |
twisti@3969 | 170 | if (VerifyMethodHandles && !for_compiler_entry) { |
twisti@3969 | 171 | // make sure recv is already on stack |
coleenp@4037 | 172 | __ load_sized_value(Address(method_temp, Method::size_of_parameters_offset()), |
twisti@3969 | 173 | temp2, |
twisti@3969 | 174 | sizeof(u2), /*is_signed*/ false); |
coleenp@4037 | 175 | // assert(sizeof(u2) == sizeof(Method::_size_of_parameters), ""); |
twisti@3969 | 176 | Label L; |
twisti@3969 | 177 | __ ld_ptr(__ argument_address(temp2, temp2, -1), temp2); |
twisti@3969 | 178 | __ cmp_and_br_short(temp2, recv, Assembler::equal, Assembler::pt, L); |
twisti@3969 | 179 | __ STOP("receiver not on stack"); |
twisti@3969 | 180 | __ BIND(L); |
twisti@3969 | 181 | } |
twisti@3969 | 182 | |
twisti@3969 | 183 | jump_from_method_handle(_masm, method_temp, temp2, temp3, for_compiler_entry); |
twisti@3969 | 184 | BLOCK_COMMENT("} jump_to_lambda_form"); |
twisti@3969 | 185 | } |
twisti@3969 | 186 | |
never@3005 | 187 | |
jrose@1145 | 188 | // Code generation |
twisti@3969 | 189 | address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm, |
twisti@3969 | 190 | vmIntrinsics::ID iid) { |
twisti@3969 | 191 | const bool not_for_compiler_entry = false; // this is the interpreter entry |
twisti@3969 | 192 | assert(is_signature_polymorphic(iid), "expected invoke iid"); |
twisti@3969 | 193 | if (iid == vmIntrinsics::_invokeGeneric || |
twisti@3969 | 194 | iid == vmIntrinsics::_compiledLambdaForm) { |
twisti@3969 | 195 | // Perhaps surprisingly, the symbolic references visible to Java are not directly used. |
twisti@3969 | 196 | // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod. |
twisti@3969 | 197 | // They all allow an appendix argument. |
twisti@3969 | 198 | __ should_not_reach_here(); // empty stubs make SG sick |
twisti@3969 | 199 | return NULL; |
twisti@3969 | 200 | } |
twisti@3969 | 201 | |
twisti@3969 | 202 | // I5_savedSP/O5_savedSP: sender SP (must preserve; see prepare_to_jump_from_interpreted) |
coleenp@4037 | 203 | // G5_method: Method* |
twisti@1858 | 204 | // G4 (Gargs): incoming argument list (must preserve) |
twisti@3969 | 205 | // O0: used as temp to hold mh or receiver |
twisti@3969 | 206 | // O1, O4: garbage temps, blown away |
twisti@3969 | 207 | Register O1_scratch = O1; |
twisti@3969 | 208 | Register O4_param_size = O4; // size of parameters |
twisti@1858 | 209 | |
twisti@3969 | 210 | address code_start = __ pc(); |
twisti@1858 | 211 | |
twisti@1858 | 212 | // here's where control starts out: |
twisti@1858 | 213 | __ align(CodeEntryAlignment); |
twisti@1858 | 214 | address entry_point = __ pc(); |
twisti@1858 | 215 | |
twisti@3969 | 216 | if (VerifyMethodHandles) { |
twisti@3969 | 217 | Label L; |
twisti@3969 | 218 | BLOCK_COMMENT("verify_intrinsic_id {"); |
coleenp@4037 | 219 | __ ldub(Address(G5_method, Method::intrinsic_id_offset_in_bytes()), O1_scratch); |
twisti@3969 | 220 | __ cmp_and_br_short(O1_scratch, (int) iid, Assembler::equal, Assembler::pt, L); |
twisti@3969 | 221 | if (iid == vmIntrinsics::_linkToVirtual || |
twisti@3969 | 222 | iid == vmIntrinsics::_linkToSpecial) { |
twisti@3969 | 223 | // could do this for all kinds, but would explode assembly code size |
coleenp@4037 | 224 | trace_method_handle(_masm, "bad Method*::intrinsic_id"); |
twisti@1858 | 225 | } |
coleenp@4037 | 226 | __ STOP("bad Method*::intrinsic_id"); |
twisti@3969 | 227 | __ bind(L); |
twisti@3969 | 228 | BLOCK_COMMENT("} verify_intrinsic_id"); |
twisti@1858 | 229 | } |
twisti@1858 | 230 | |
twisti@3969 | 231 | // First task: Find out how big the argument list is. |
twisti@3969 | 232 | Address O4_first_arg_addr; |
twisti@3969 | 233 | int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid); |
twisti@3969 | 234 | assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic"); |
twisti@3969 | 235 | if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) { |
coleenp@4037 | 236 | __ load_sized_value(Address(G5_method, Method::size_of_parameters_offset()), |
twisti@3969 | 237 | O4_param_size, |
twisti@3969 | 238 | sizeof(u2), /*is_signed*/ false); |
coleenp@4037 | 239 | // assert(sizeof(u2) == sizeof(Method::_size_of_parameters), ""); |
twisti@3969 | 240 | O4_first_arg_addr = __ argument_address(O4_param_size, O4_param_size, -1); |
twisti@3969 | 241 | } else { |
twisti@3969 | 242 | DEBUG_ONLY(O4_param_size = noreg); |
twisti@3969 | 243 | } |
twisti@1858 | 244 | |
twisti@3969 | 245 | Register O0_mh = noreg; |
twisti@3969 | 246 | if (!is_signature_polymorphic_static(iid)) { |
twisti@3969 | 247 | __ ld_ptr(O4_first_arg_addr, O0_mh = O0); |
twisti@3969 | 248 | DEBUG_ONLY(O4_param_size = noreg); |
twisti@3969 | 249 | } |
jrose@2266 | 250 | |
twisti@3969 | 251 | // O4_first_arg_addr is live! |
never@2950 | 252 | |
twisti@3969 | 253 | if (TraceMethodHandles) { |
twisti@3969 | 254 | const char* name = vmIntrinsics::name_at(iid); |
twisti@3969 | 255 | if (*name == '_') name += 1; |
twisti@3969 | 256 | const size_t len = strlen(name) + 50; |
twisti@3969 | 257 | char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
twisti@3969 | 258 | const char* suffix = ""; |
twisti@3969 | 259 | if (vmIntrinsics::method_for(iid) == NULL || |
twisti@3969 | 260 | !vmIntrinsics::method_for(iid)->access_flags().is_public()) { |
twisti@3969 | 261 | if (is_signature_polymorphic_static(iid)) |
twisti@3969 | 262 | suffix = "/static"; |
twisti@3969 | 263 | else |
twisti@3969 | 264 | suffix = "/private"; |
twisti@3969 | 265 | } |
twisti@3969 | 266 | jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix); |
twisti@3969 | 267 | if (O0_mh != noreg) |
twisti@3969 | 268 | __ mov(O0_mh, G3_method_handle); // make stub happy |
twisti@3969 | 269 | trace_method_handle(_masm, qname); |
twisti@3969 | 270 | } |
never@2950 | 271 | |
twisti@3969 | 272 | if (iid == vmIntrinsics::_invokeBasic) { |
twisti@3969 | 273 | generate_method_handle_dispatch(_masm, iid, O0_mh, noreg, not_for_compiler_entry); |
twisti@1858 | 274 | |
twisti@3969 | 275 | } else { |
twisti@3969 | 276 | // Adjust argument list by popping the trailing MemberName argument. |
twisti@3969 | 277 | Register O0_recv = noreg; |
twisti@3969 | 278 | if (MethodHandles::ref_kind_has_receiver(ref_kind)) { |
twisti@3969 | 279 | // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack. |
twisti@3969 | 280 | __ ld_ptr(O4_first_arg_addr, O0_recv = O0); |
twisti@3969 | 281 | DEBUG_ONLY(O4_param_size = noreg); |
twisti@3969 | 282 | } |
twisti@3969 | 283 | Register G5_member = G5_method; // MemberName ptr; incoming method ptr is dead now |
twisti@3969 | 284 | __ ld_ptr(__ argument_address(constant(0)), G5_member); |
twisti@3969 | 285 | __ add(Gargs, Interpreter::stackElementSize, Gargs); |
twisti@3969 | 286 | generate_method_handle_dispatch(_masm, iid, O0_recv, G5_member, not_for_compiler_entry); |
jrose@2266 | 287 | } |
jrose@2266 | 288 | |
twisti@3969 | 289 | if (PrintMethodHandleStubs) { |
twisti@3969 | 290 | address code_end = __ pc(); |
twisti@3969 | 291 | tty->print_cr("--------"); |
twisti@3969 | 292 | tty->print_cr("method handle interpreter entry for %s", vmIntrinsics::name_at(iid)); |
twisti@3969 | 293 | Disassembler::decode(code_start, code_end); |
twisti@3969 | 294 | tty->cr(); |
twisti@3969 | 295 | } |
jrose@2266 | 296 | |
twisti@1858 | 297 | return entry_point; |
jrose@1145 | 298 | } |
jrose@1145 | 299 | |
twisti@3969 | 300 | void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm, |
twisti@3969 | 301 | vmIntrinsics::ID iid, |
twisti@3969 | 302 | Register receiver_reg, |
twisti@3969 | 303 | Register member_reg, |
twisti@3969 | 304 | bool for_compiler_entry) { |
twisti@3969 | 305 | assert(is_signature_polymorphic(iid), "expected invoke iid"); |
twisti@3969 | 306 | // temps used in this code are not used in *either* compiled or interpreted calling sequences |
twisti@3969 | 307 | Register temp1 = (for_compiler_entry ? G1_scratch : O1); |
twisti@3969 | 308 | Register temp2 = (for_compiler_entry ? G4_scratch : O4); |
twisti@3969 | 309 | Register temp3 = G3_scratch; |
twisti@3969 | 310 | Register temp4 = (for_compiler_entry ? noreg : O2); |
twisti@3969 | 311 | if (for_compiler_entry) { |
twisti@3969 | 312 | assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : O0), "only valid assignment"); |
twisti@3969 | 313 | assert_different_registers(temp1, O0, O1, O2, O3, O4, O5); |
twisti@3969 | 314 | assert_different_registers(temp2, O0, O1, O2, O3, O4, O5); |
twisti@3969 | 315 | assert_different_registers(temp3, O0, O1, O2, O3, O4, O5); |
twisti@3969 | 316 | assert_different_registers(temp4, O0, O1, O2, O3, O4, O5); |
twisti@3969 | 317 | } |
twisti@3969 | 318 | if (receiver_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, receiver_reg); |
twisti@3969 | 319 | if (member_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, member_reg); |
twisti@3969 | 320 | if (!for_compiler_entry) assert_different_registers(temp1, temp2, temp3, temp4, O5_savedSP); // don't trash lastSP |
twisti@1858 | 321 | |
twisti@3969 | 322 | if (iid == vmIntrinsics::_invokeBasic) { |
twisti@3969 | 323 | // indirect through MH.form.vmentry.vmtarget |
twisti@3969 | 324 | jump_to_lambda_form(_masm, receiver_reg, G5_method, temp2, temp3, for_compiler_entry); |
never@2950 | 325 | |
never@2950 | 326 | } else { |
twisti@3969 | 327 | // The method is a member invoker used by direct method handles. |
twisti@3969 | 328 | if (VerifyMethodHandles) { |
twisti@3969 | 329 | // make sure the trailing argument really is a MemberName (caller responsibility) |
coleenp@4037 | 330 | verify_klass(_masm, member_reg, SystemDictionary::WK_KLASS_ENUM_NAME(MemberName_klass), |
twisti@3969 | 331 | temp1, temp2, |
twisti@3969 | 332 | "MemberName required for invokeVirtual etc."); |
twisti@3969 | 333 | } |
twisti@3969 | 334 | |
twisti@3969 | 335 | Address member_clazz( member_reg, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes())); |
twisti@3969 | 336 | Address member_vmindex( member_reg, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes())); |
twisti@3969 | 337 | Address member_vmtarget( member_reg, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes())); |
twisti@3969 | 338 | |
twisti@3969 | 339 | Register temp1_recv_klass = temp1; |
twisti@3969 | 340 | if (iid != vmIntrinsics::_linkToStatic) { |
twisti@3969 | 341 | __ verify_oop(receiver_reg); |
twisti@3969 | 342 | if (iid == vmIntrinsics::_linkToSpecial) { |
twisti@3969 | 343 | // Don't actually load the klass; just null-check the receiver. |
twisti@3969 | 344 | __ null_check(receiver_reg); |
twisti@3969 | 345 | } else { |
twisti@3969 | 346 | // load receiver klass itself |
twisti@3969 | 347 | __ null_check(receiver_reg, oopDesc::klass_offset_in_bytes()); |
twisti@3969 | 348 | __ load_klass(receiver_reg, temp1_recv_klass); |
coleenp@4052 | 349 | __ verify_klass_ptr(temp1_recv_klass); |
twisti@3969 | 350 | } |
twisti@3969 | 351 | BLOCK_COMMENT("check_receiver {"); |
twisti@3969 | 352 | // The receiver for the MemberName must be in receiver_reg. |
twisti@3969 | 353 | // Check the receiver against the MemberName.clazz |
twisti@3969 | 354 | if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) { |
twisti@3969 | 355 | // Did not load it above... |
twisti@3969 | 356 | __ load_klass(receiver_reg, temp1_recv_klass); |
coleenp@4052 | 357 | __ verify_klass_ptr(temp1_recv_klass); |
twisti@3969 | 358 | } |
twisti@3969 | 359 | if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) { |
twisti@3969 | 360 | Label L_ok; |
twisti@3969 | 361 | Register temp2_defc = temp2; |
twisti@3969 | 362 | __ load_heap_oop(member_clazz, temp2_defc); |
twisti@3969 | 363 | load_klass_from_Class(_masm, temp2_defc, temp3, temp4); |
coleenp@4052 | 364 | __ verify_klass_ptr(temp2_defc); |
twisti@3969 | 365 | __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, temp4, L_ok); |
twisti@3969 | 366 | // If we get here, the type check failed! |
twisti@3969 | 367 | __ STOP("receiver class disagrees with MemberName.clazz"); |
twisti@3969 | 368 | __ bind(L_ok); |
twisti@3969 | 369 | } |
twisti@3969 | 370 | BLOCK_COMMENT("} check_receiver"); |
twisti@3969 | 371 | } |
twisti@3969 | 372 | if (iid == vmIntrinsics::_linkToSpecial || |
twisti@3969 | 373 | iid == vmIntrinsics::_linkToStatic) { |
twisti@3969 | 374 | DEBUG_ONLY(temp1_recv_klass = noreg); // these guys didn't load the recv_klass |
twisti@3969 | 375 | } |
twisti@3969 | 376 | |
twisti@3969 | 377 | // Live registers at this point: |
twisti@3969 | 378 | // member_reg - MemberName that was the trailing argument |
twisti@3969 | 379 | // temp1_recv_klass - klass of stacked receiver, if needed |
twisti@3969 | 380 | // O5_savedSP - interpreter linkage (if interpreted) |
twisti@3969 | 381 | // O0..O7,G1,G4 - compiler arguments (if compiled) |
twisti@3969 | 382 | |
twisti@3969 | 383 | bool method_is_live = false; |
twisti@3969 | 384 | switch (iid) { |
twisti@3969 | 385 | case vmIntrinsics::_linkToSpecial: |
twisti@3969 | 386 | if (VerifyMethodHandles) { |
twisti@3969 | 387 | verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp3); |
twisti@3969 | 388 | } |
coleenp@4037 | 389 | __ ld_ptr(member_vmtarget, G5_method); |
twisti@3969 | 390 | method_is_live = true; |
twisti@3969 | 391 | break; |
twisti@3969 | 392 | |
twisti@3969 | 393 | case vmIntrinsics::_linkToStatic: |
twisti@3969 | 394 | if (VerifyMethodHandles) { |
twisti@3969 | 395 | verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp3); |
twisti@3969 | 396 | } |
coleenp@4037 | 397 | __ ld_ptr(member_vmtarget, G5_method); |
twisti@3969 | 398 | method_is_live = true; |
twisti@3969 | 399 | break; |
twisti@3969 | 400 | |
twisti@3969 | 401 | case vmIntrinsics::_linkToVirtual: |
never@2950 | 402 | { |
twisti@3969 | 403 | // same as TemplateTable::invokevirtual, |
twisti@3969 | 404 | // minus the CP setup and profiling: |
twisti@3969 | 405 | |
twisti@3969 | 406 | if (VerifyMethodHandles) { |
twisti@3969 | 407 | verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp3); |
twisti@3969 | 408 | } |
twisti@3969 | 409 | |
twisti@3969 | 410 | // pick out the vtable index from the MemberName, and then we can discard it: |
twisti@3969 | 411 | Register temp2_index = temp2; |
twisti@3969 | 412 | __ ld_ptr(member_vmindex, temp2_index); |
twisti@3969 | 413 | |
twisti@3969 | 414 | if (VerifyMethodHandles) { |
twisti@3969 | 415 | Label L_index_ok; |
twisti@3969 | 416 | __ cmp_and_br_short(temp2_index, (int) 0, Assembler::greaterEqual, Assembler::pn, L_index_ok); |
twisti@3969 | 417 | __ STOP("no virtual index"); |
twisti@3969 | 418 | __ BIND(L_index_ok); |
twisti@3969 | 419 | } |
twisti@3969 | 420 | |
twisti@3969 | 421 | // Note: The verifier invariants allow us to ignore MemberName.clazz and vmtarget |
twisti@3969 | 422 | // at this point. And VerifyMethodHandles has already checked clazz, if needed. |
twisti@3969 | 423 | |
coleenp@4037 | 424 | // get target Method* & entry point |
twisti@3969 | 425 | __ lookup_virtual_method(temp1_recv_klass, temp2_index, G5_method); |
twisti@3969 | 426 | method_is_live = true; |
twisti@3969 | 427 | break; |
never@2950 | 428 | } |
twisti@3969 | 429 | |
twisti@3969 | 430 | case vmIntrinsics::_linkToInterface: |
twisti@3969 | 431 | { |
twisti@3969 | 432 | // same as TemplateTable::invokeinterface |
twisti@3969 | 433 | // (minus the CP setup and profiling, with different argument motion) |
twisti@3969 | 434 | if (VerifyMethodHandles) { |
twisti@3969 | 435 | verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp3); |
twisti@3969 | 436 | } |
twisti@3969 | 437 | |
twisti@3969 | 438 | Register temp3_intf = temp3; |
twisti@3969 | 439 | __ load_heap_oop(member_clazz, temp3_intf); |
twisti@3969 | 440 | load_klass_from_Class(_masm, temp3_intf, temp2, temp4); |
coleenp@4052 | 441 | __ verify_klass_ptr(temp3_intf); |
twisti@3969 | 442 | |
twisti@3969 | 443 | Register G5_index = G5_method; |
twisti@3969 | 444 | __ ld_ptr(member_vmindex, G5_index); |
twisti@3969 | 445 | if (VerifyMethodHandles) { |
twisti@3969 | 446 | Label L; |
twisti@3969 | 447 | __ cmp_and_br_short(G5_index, 0, Assembler::greaterEqual, Assembler::pt, L); |
twisti@3969 | 448 | __ STOP("invalid vtable index for MH.invokeInterface"); |
twisti@3969 | 449 | __ bind(L); |
twisti@3969 | 450 | } |
twisti@3969 | 451 | |
twisti@3969 | 452 | // given intf, index, and recv klass, dispatch to the implementation method |
twisti@3969 | 453 | Label L_no_such_interface; |
twisti@3969 | 454 | Register no_sethi_temp = noreg; |
twisti@3969 | 455 | __ lookup_interface_method(temp1_recv_klass, temp3_intf, |
twisti@3969 | 456 | // note: next two args must be the same: |
twisti@3969 | 457 | G5_index, G5_method, |
twisti@3969 | 458 | temp2, no_sethi_temp, |
twisti@3969 | 459 | L_no_such_interface); |
twisti@3969 | 460 | |
coleenp@4052 | 461 | __ verify_method_ptr(G5_method); |
twisti@3969 | 462 | jump_from_method_handle(_masm, G5_method, temp2, temp3, for_compiler_entry); |
twisti@3969 | 463 | |
twisti@3969 | 464 | __ bind(L_no_such_interface); |
twisti@3969 | 465 | AddressLiteral icce(StubRoutines::throw_IncompatibleClassChangeError_entry()); |
twisti@3969 | 466 | __ jump_to(icce, temp3); |
twisti@3969 | 467 | __ delayed()->nop(); |
twisti@3969 | 468 | break; |
twisti@3969 | 469 | } |
twisti@3969 | 470 | |
twisti@3969 | 471 | default: |
twisti@3969 | 472 | fatal(err_msg("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid))); |
twisti@3969 | 473 | break; |
twisti@3969 | 474 | } |
twisti@3969 | 475 | |
twisti@3969 | 476 | if (method_is_live) { |
twisti@3969 | 477 | // live at this point: G5_method, O5_savedSP (if interpreted) |
twisti@3969 | 478 | |
twisti@3969 | 479 | // After figuring out which concrete method to call, jump into it. |
twisti@3969 | 480 | // Note that this works in the interpreter with no data motion. |
twisti@3969 | 481 | // But the compiled version will require that rcx_recv be shifted out. |
coleenp@4052 | 482 | __ verify_method_ptr(G5_method); |
twisti@3969 | 483 | jump_from_method_handle(_masm, G5_method, temp1, temp3, for_compiler_entry); |
twisti@3969 | 484 | } |
never@2950 | 485 | } |
twisti@1858 | 486 | } |
twisti@1858 | 487 | |
bdelsart@3451 | 488 | #ifndef PRODUCT |
twisti@1858 | 489 | void trace_method_handle_stub(const char* adaptername, |
never@2868 | 490 | oopDesc* mh, |
bdelsart@3451 | 491 | intptr_t* saved_sp, |
bdelsart@3451 | 492 | intptr_t* args, |
bdelsart@3451 | 493 | intptr_t* tracing_fp) { |
twisti@3969 | 494 | bool has_mh = (strstr(adaptername, "/static") == NULL && |
twisti@3969 | 495 | strstr(adaptername, "linkTo") == NULL); // static linkers don't have MH |
twisti@3969 | 496 | const char* mh_reg_name = has_mh ? "G3_mh" : "G3"; |
twisti@3969 | 497 | tty->print_cr("MH %s %s="INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT " args=" INTPTR_FORMAT, |
twisti@3969 | 498 | adaptername, mh_reg_name, |
twisti@3969 | 499 | (intptr_t) mh, saved_sp, args); |
bdelsart@3451 | 500 | |
bdelsart@3451 | 501 | if (Verbose) { |
bdelsart@3451 | 502 | // dumping last frame with frame::describe |
bdelsart@3451 | 503 | |
bdelsart@3451 | 504 | JavaThread* p = JavaThread::active(); |
bdelsart@3451 | 505 | |
bdelsart@3451 | 506 | ResourceMark rm; |
bdelsart@3451 | 507 | PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here |
bdelsart@3451 | 508 | FrameValues values; |
bdelsart@3451 | 509 | |
bdelsart@3451 | 510 | // Note: We want to allow trace_method_handle from any call site. |
bdelsart@3451 | 511 | // While trace_method_handle creates a frame, it may be entered |
bdelsart@3451 | 512 | // without a valid return PC in O7 (e.g. not just after a call). |
bdelsart@3451 | 513 | // Walking that frame could lead to failures due to that invalid PC. |
bdelsart@3451 | 514 | // => carefully detect that frame when doing the stack walking |
bdelsart@3451 | 515 | |
bdelsart@3451 | 516 | // walk up to the right frame using the "tracing_fp" argument |
bdelsart@3451 | 517 | intptr_t* cur_sp = StubRoutines::Sparc::flush_callers_register_windows_func()(); |
bdelsart@3451 | 518 | frame cur_frame(cur_sp, frame::unpatchable, NULL); |
bdelsart@3451 | 519 | |
bdelsart@3451 | 520 | while (cur_frame.fp() != (intptr_t *)(STACK_BIAS+(uintptr_t)tracing_fp)) { |
bdelsart@3451 | 521 | cur_frame = os::get_sender_for_C_frame(&cur_frame); |
bdelsart@3451 | 522 | } |
bdelsart@3451 | 523 | |
bdelsart@3451 | 524 | // safely create a frame and call frame::describe |
bdelsart@3451 | 525 | intptr_t *dump_sp = cur_frame.sender_sp(); |
bdelsart@3451 | 526 | intptr_t *dump_fp = cur_frame.link(); |
bdelsart@3451 | 527 | |
bdelsart@3451 | 528 | bool walkable = has_mh; // whether the traced frame shoud be walkable |
bdelsart@3451 | 529 | |
bdelsart@3451 | 530 | // the sender for cur_frame is the caller of trace_method_handle |
bdelsart@3451 | 531 | if (walkable) { |
bdelsart@3451 | 532 | // The previous definition of walkable may have to be refined |
bdelsart@3451 | 533 | // if new call sites cause the next frame constructor to start |
bdelsart@3451 | 534 | // failing. Alternatively, frame constructors could be |
bdelsart@3451 | 535 | // modified to support the current or future non walkable |
bdelsart@3451 | 536 | // frames (but this is more intrusive and is not considered as |
bdelsart@3451 | 537 | // part of this RFE, which will instead use a simpler output). |
bdelsart@3451 | 538 | frame dump_frame = frame(dump_sp, |
bdelsart@3451 | 539 | cur_frame.sp(), // younger_sp |
bdelsart@3451 | 540 | false); // no adaptation |
bdelsart@3451 | 541 | dump_frame.describe(values, 1); |
bdelsart@3451 | 542 | } else { |
bdelsart@3451 | 543 | // Robust dump for frames which cannot be constructed from sp/younger_sp |
bdelsart@3451 | 544 | // Add descriptions without building a Java frame to avoid issues |
bdelsart@3451 | 545 | values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>"); |
bdelsart@3451 | 546 | values.describe(-1, dump_sp, "sp"); |
bdelsart@3451 | 547 | } |
bdelsart@3451 | 548 | |
bdelsart@3451 | 549 | bool has_args = has_mh; // whether Gargs is meaningful |
bdelsart@3451 | 550 | |
bdelsart@3451 | 551 | // mark args, if seems valid (may not be valid for some adapters) |
bdelsart@3451 | 552 | if (has_args) { |
bdelsart@3451 | 553 | if ((args >= dump_sp) && (args < dump_fp)) { |
bdelsart@3451 | 554 | values.describe(-1, args, "*G4_args"); |
bdelsart@3451 | 555 | } |
bdelsart@3451 | 556 | } |
bdelsart@3451 | 557 | |
bdelsart@3451 | 558 | // mark saved_sp, if seems valid (may not be valid for some adapters) |
bdelsart@3451 | 559 | intptr_t *unbiased_sp = (intptr_t *)(STACK_BIAS+(uintptr_t)saved_sp); |
twisti@3969 | 560 | const int ARG_LIMIT = 255, SLOP = 45, UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP); |
bdelsart@3451 | 561 | if ((unbiased_sp >= dump_sp - UNREASONABLE_STACK_MOVE) && (unbiased_sp < dump_fp)) { |
bdelsart@3451 | 562 | values.describe(-1, unbiased_sp, "*saved_sp+STACK_BIAS"); |
bdelsart@3451 | 563 | } |
bdelsart@3451 | 564 | |
bdelsart@3451 | 565 | // Note: the unextended_sp may not be correct |
bdelsart@3451 | 566 | tty->print_cr(" stack layout:"); |
bdelsart@3451 | 567 | values.print(p); |
twisti@3969 | 568 | if (has_mh && mh->is_oop()) { |
twisti@3969 | 569 | mh->print(); |
twisti@3969 | 570 | if (java_lang_invoke_MethodHandle::is_instance(mh)) { |
twisti@3969 | 571 | if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0) |
twisti@3969 | 572 | java_lang_invoke_MethodHandle::form(mh)->print(); |
twisti@3969 | 573 | } |
twisti@3969 | 574 | } |
bdelsart@3451 | 575 | } |
twisti@1858 | 576 | } |
bdelsart@3451 | 577 | |
twisti@2204 | 578 | void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
twisti@2204 | 579 | if (!TraceMethodHandles) return; |
twisti@2204 | 580 | BLOCK_COMMENT("trace_method_handle {"); |
twisti@2204 | 581 | // save: Gargs, O5_savedSP |
bdelsart@3451 | 582 | __ save_frame(16); // need space for saving required FPU state |
bdelsart@3451 | 583 | |
twisti@2204 | 584 | __ set((intptr_t) adaptername, O0); |
twisti@2204 | 585 | __ mov(G3_method_handle, O1); |
never@2868 | 586 | __ mov(I5_savedSP, O2); |
bdelsart@3451 | 587 | __ mov(Gargs, O3); |
bdelsart@3451 | 588 | __ mov(I6, O4); // frame identifier for safe stack walking |
bdelsart@3451 | 589 | |
bdelsart@3451 | 590 | // Save scratched registers that might be needed. Robustness is more |
bdelsart@3451 | 591 | // important than optimizing the saves for this debug only code. |
bdelsart@3451 | 592 | |
bdelsart@3451 | 593 | // save FP result, valid at some call sites (adapter_opt_return_float, ...) |
bdelsart@3451 | 594 | Address d_save(FP, -sizeof(jdouble) + STACK_BIAS); |
bdelsart@3451 | 595 | __ stf(FloatRegisterImpl::D, Ftos_d, d_save); |
bdelsart@3451 | 596 | // Safely save all globals but G2 (handled by call_VM_leaf) and G7 |
bdelsart@3451 | 597 | // (OS reserved). |
twisti@2204 | 598 | __ mov(G3_method_handle, L3); |
twisti@2204 | 599 | __ mov(Gargs, L4); |
twisti@2204 | 600 | __ mov(G5_method_type, L5); |
bdelsart@3451 | 601 | __ mov(G6, L6); |
bdelsart@3451 | 602 | __ mov(G1, L1); |
bdelsart@3451 | 603 | |
bdelsart@3451 | 604 | __ call_VM_leaf(L2 /* for G2 */, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
twisti@2204 | 605 | |
twisti@2204 | 606 | __ mov(L3, G3_method_handle); |
twisti@2204 | 607 | __ mov(L4, Gargs); |
twisti@2204 | 608 | __ mov(L5, G5_method_type); |
bdelsart@3451 | 609 | __ mov(L6, G6); |
bdelsart@3451 | 610 | __ mov(L1, G1); |
bdelsart@3451 | 611 | __ ldf(FloatRegisterImpl::D, d_save, Ftos_d); |
bdelsart@3451 | 612 | |
twisti@2204 | 613 | __ restore(); |
twisti@2204 | 614 | BLOCK_COMMENT("} trace_method_handle"); |
twisti@2204 | 615 | } |
twisti@1858 | 616 | #endif // PRODUCT |