Wed, 07 Dec 2011 11:35:03 +0100
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
Summary: Moved sizeof(klassOopDesc), changed the return type to ByteSize and removed the _in_bytes suffix.
Reviewed-by: never, bdelsart, coleenp, jrose
jrose@1145 | 1 | /* |
twisti@2436 | 2 | * Copyright (c) 2008, 2011, 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@2204 | 34 | #else |
twisti@2204 | 35 | #define BLOCK_COMMENT(str) __ block_comment(str) |
twisti@2204 | 36 | #endif |
twisti@2204 | 37 | |
twisti@2204 | 38 | #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
twisti@2204 | 39 | |
jrose@1145 | 40 | address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
jrose@1145 | 41 | address interpreted_entry) { |
twisti@1858 | 42 | // Just before the actual machine code entry point, allocate space |
twisti@1858 | 43 | // for a MethodHandleEntry::Data record, so that we can manage everything |
twisti@1858 | 44 | // from one base pointer. |
jrose@1145 | 45 | __ align(wordSize); |
jrose@1145 | 46 | address target = __ pc() + sizeof(Data); |
jrose@1145 | 47 | while (__ pc() < target) { |
jrose@1145 | 48 | __ nop(); |
jrose@1145 | 49 | __ align(wordSize); |
jrose@1145 | 50 | } |
jrose@1145 | 51 | |
jrose@1145 | 52 | MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); |
jrose@1145 | 53 | me->set_end_address(__ pc()); // set a temporary end_address |
jrose@1145 | 54 | me->set_from_interpreted_entry(interpreted_entry); |
jrose@1145 | 55 | me->set_type_checking_entry(NULL); |
jrose@1145 | 56 | |
jrose@1145 | 57 | return (address) me; |
jrose@1145 | 58 | } |
jrose@1145 | 59 | |
jrose@1145 | 60 | MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, |
jrose@1145 | 61 | address start_addr) { |
jrose@1145 | 62 | MethodHandleEntry* me = (MethodHandleEntry*) start_addr; |
jrose@1145 | 63 | assert(me->end_address() == start_addr, "valid ME"); |
jrose@1145 | 64 | |
jrose@1145 | 65 | // Fill in the real end_address: |
jrose@1145 | 66 | __ align(wordSize); |
jrose@1145 | 67 | me->set_end_address(__ pc()); |
jrose@1145 | 68 | |
jrose@1145 | 69 | return me; |
jrose@1145 | 70 | } |
jrose@1145 | 71 | |
never@2950 | 72 | // stack walking support |
never@2950 | 73 | |
never@2950 | 74 | frame MethodHandles::ricochet_frame_sender(const frame& fr, RegisterMap *map) { |
never@2950 | 75 | //RicochetFrame* f = RicochetFrame::from_frame(fr); |
never@2950 | 76 | // Cf. is_interpreted_frame path of frame::sender |
never@2950 | 77 | intptr_t* younger_sp = fr.sp(); |
never@2950 | 78 | intptr_t* sp = fr.sender_sp(); |
never@2950 | 79 | map->make_integer_regs_unsaved(); |
never@2950 | 80 | map->shift_window(sp, younger_sp); |
never@2950 | 81 | bool this_frame_adjusted_stack = true; // I5_savedSP is live in this RF |
never@2950 | 82 | return frame(sp, younger_sp, this_frame_adjusted_stack); |
never@2950 | 83 | } |
never@2950 | 84 | |
never@2950 | 85 | void MethodHandles::ricochet_frame_oops_do(const frame& fr, OopClosure* blk, const RegisterMap* reg_map) { |
never@2950 | 86 | ResourceMark rm; |
never@2950 | 87 | RicochetFrame* f = RicochetFrame::from_frame(fr); |
never@2950 | 88 | |
never@2950 | 89 | // pick up the argument type descriptor: |
never@2950 | 90 | Thread* thread = Thread::current(); |
never@2950 | 91 | Handle cookie(thread, f->compute_saved_args_layout(true, true)); |
never@2950 | 92 | |
never@2950 | 93 | // process fixed part |
never@2950 | 94 | blk->do_oop((oop*)f->saved_target_addr()); |
never@2950 | 95 | blk->do_oop((oop*)f->saved_args_layout_addr()); |
never@2950 | 96 | |
never@2950 | 97 | // process variable arguments: |
never@2950 | 98 | if (cookie.is_null()) return; // no arguments to describe |
never@2950 | 99 | |
never@2950 | 100 | // the cookie is actually the invokeExact method for my target |
never@2950 | 101 | // his argument signature is what I'm interested in |
never@2950 | 102 | assert(cookie->is_method(), ""); |
never@2950 | 103 | methodHandle invoker(thread, methodOop(cookie())); |
never@2950 | 104 | assert(invoker->name() == vmSymbols::invokeExact_name(), "must be this kind of method"); |
never@2950 | 105 | assert(!invoker->is_static(), "must have MH argument"); |
never@2950 | 106 | int slot_count = invoker->size_of_parameters(); |
never@2950 | 107 | assert(slot_count >= 1, "must include 'this'"); |
never@2950 | 108 | intptr_t* base = f->saved_args_base(); |
never@2950 | 109 | intptr_t* retval = NULL; |
never@2950 | 110 | if (f->has_return_value_slot()) |
never@2950 | 111 | retval = f->return_value_slot_addr(); |
never@2950 | 112 | int slot_num = slot_count - 1; |
never@2950 | 113 | intptr_t* loc = &base[slot_num]; |
never@2950 | 114 | //blk->do_oop((oop*) loc); // original target, which is irrelevant |
never@2950 | 115 | int arg_num = 0; |
never@2950 | 116 | for (SignatureStream ss(invoker->signature()); !ss.is_done(); ss.next()) { |
never@2950 | 117 | if (ss.at_return_type()) continue; |
never@2950 | 118 | BasicType ptype = ss.type(); |
never@2950 | 119 | if (ptype == T_ARRAY) ptype = T_OBJECT; // fold all refs to T_OBJECT |
never@2950 | 120 | assert(ptype >= T_BOOLEAN && ptype <= T_OBJECT, "not array or void"); |
never@2950 | 121 | slot_num -= type2size[ptype]; |
never@2950 | 122 | loc = &base[slot_num]; |
never@2950 | 123 | bool is_oop = (ptype == T_OBJECT && loc != retval); |
never@2950 | 124 | if (is_oop) blk->do_oop((oop*)loc); |
never@2950 | 125 | arg_num += 1; |
never@2950 | 126 | } |
never@2950 | 127 | assert(slot_num == 0, "must have processed all the arguments"); |
never@2950 | 128 | } |
never@2950 | 129 | |
never@2950 | 130 | // Ricochet Frames |
never@2950 | 131 | const Register MethodHandles::RicochetFrame::L1_continuation = L1; |
never@2950 | 132 | const Register MethodHandles::RicochetFrame::L2_saved_target = L2; |
never@2950 | 133 | const Register MethodHandles::RicochetFrame::L3_saved_args_layout = L3; |
never@2950 | 134 | const Register MethodHandles::RicochetFrame::L4_saved_args_base = L4; // cf. Gargs = G4 |
never@2950 | 135 | const Register MethodHandles::RicochetFrame::L5_conversion = L5; |
never@2950 | 136 | #ifdef ASSERT |
never@2950 | 137 | const Register MethodHandles::RicochetFrame::L0_magic_number_1 = L0; |
never@2950 | 138 | #endif //ASSERT |
never@2950 | 139 | |
never@2950 | 140 | oop MethodHandles::RicochetFrame::compute_saved_args_layout(bool read_cache, bool write_cache) { |
never@2950 | 141 | if (read_cache) { |
never@2950 | 142 | oop cookie = saved_args_layout(); |
never@2950 | 143 | if (cookie != NULL) return cookie; |
never@2950 | 144 | } |
never@2950 | 145 | oop target = saved_target(); |
never@2950 | 146 | oop mtype = java_lang_invoke_MethodHandle::type(target); |
never@2950 | 147 | oop mtform = java_lang_invoke_MethodType::form(mtype); |
never@2950 | 148 | oop cookie = java_lang_invoke_MethodTypeForm::vmlayout(mtform); |
never@2950 | 149 | if (write_cache) { |
never@2950 | 150 | (*saved_args_layout_addr()) = cookie; |
never@2950 | 151 | } |
never@2950 | 152 | return cookie; |
never@2950 | 153 | } |
never@2950 | 154 | |
never@2950 | 155 | void MethodHandles::RicochetFrame::generate_ricochet_blob(MacroAssembler* _masm, |
never@2950 | 156 | // output params: |
never@2950 | 157 | int* bounce_offset, |
never@2950 | 158 | int* exception_offset, |
never@2950 | 159 | int* frame_size_in_words) { |
never@2950 | 160 | (*frame_size_in_words) = RicochetFrame::frame_size_in_bytes() / wordSize; |
never@2950 | 161 | |
never@2950 | 162 | address start = __ pc(); |
never@2950 | 163 | |
never@2950 | 164 | #ifdef ASSERT |
never@2950 | 165 | __ illtrap(0); __ illtrap(0); __ illtrap(0); |
never@2950 | 166 | // here's a hint of something special: |
never@2950 | 167 | __ set(MAGIC_NUMBER_1, G0); |
never@2950 | 168 | __ set(MAGIC_NUMBER_2, G0); |
never@2950 | 169 | #endif //ASSERT |
never@2950 | 170 | __ illtrap(0); // not reached |
never@2950 | 171 | |
never@2950 | 172 | // Return values are in registers. |
never@2950 | 173 | // L1_continuation contains a cleanup continuation we must return |
never@2950 | 174 | // to. |
never@2950 | 175 | |
never@2950 | 176 | (*bounce_offset) = __ pc() - start; |
never@2950 | 177 | BLOCK_COMMENT("ricochet_blob.bounce"); |
never@2950 | 178 | |
never@2950 | 179 | if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
never@2950 | 180 | trace_method_handle(_masm, "ricochet_blob.bounce"); |
never@2950 | 181 | |
never@2950 | 182 | __ JMP(L1_continuation, 0); |
never@2950 | 183 | __ delayed()->nop(); |
never@2950 | 184 | __ illtrap(0); |
never@2950 | 185 | |
never@2950 | 186 | DEBUG_ONLY(__ set(MAGIC_NUMBER_2, G0)); |
never@2950 | 187 | |
never@2950 | 188 | (*exception_offset) = __ pc() - start; |
never@2950 | 189 | BLOCK_COMMENT("ricochet_blob.exception"); |
never@2950 | 190 | |
never@2950 | 191 | // compare this to Interpreter::rethrow_exception_entry, which is parallel code |
never@2950 | 192 | // for example, see TemplateInterpreterGenerator::generate_throw_exception |
never@2950 | 193 | // Live registers in: |
never@2950 | 194 | // Oexception (O0): exception |
never@2950 | 195 | // Oissuing_pc (O1): return address/pc that threw exception (ignored, always equal to bounce addr) |
never@2950 | 196 | __ verify_oop(Oexception); |
never@2950 | 197 | |
never@2950 | 198 | // Take down the frame. |
never@2950 | 199 | |
never@2950 | 200 | // Cf. InterpreterMacroAssembler::remove_activation. |
never@2950 | 201 | leave_ricochet_frame(_masm, /*recv_reg=*/ noreg, I5_savedSP, I7); |
never@2950 | 202 | |
never@2950 | 203 | // We are done with this activation frame; find out where to go next. |
never@2950 | 204 | // The continuation point will be an exception handler, which expects |
never@2950 | 205 | // the following registers set up: |
never@2950 | 206 | // |
never@2950 | 207 | // Oexception: exception |
never@2950 | 208 | // Oissuing_pc: the local call that threw exception |
never@2950 | 209 | // Other On: garbage |
never@2950 | 210 | // In/Ln: the contents of the caller's register window |
never@2950 | 211 | // |
never@2950 | 212 | // We do the required restore at the last possible moment, because we |
never@2950 | 213 | // need to preserve some state across a runtime call. |
never@2950 | 214 | // (Remember that the caller activation is unknown--it might not be |
never@2950 | 215 | // interpreted, so things like Lscratch are useless in the caller.) |
never@2950 | 216 | __ mov(Oexception, Oexception ->after_save()); // get exception in I0 so it will be on O0 after restore |
never@2950 | 217 | __ add(I7, frame::pc_return_offset, Oissuing_pc->after_save()); // likewise set I1 to a value local to the caller |
never@2950 | 218 | __ call_VM_leaf(L7_thread_cache, |
never@2950 | 219 | CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), |
never@2950 | 220 | G2_thread, Oissuing_pc->after_save()); |
never@2950 | 221 | |
never@2950 | 222 | // The caller's SP was adjusted upon method entry to accomodate |
never@2950 | 223 | // the callee's non-argument locals. Undo that adjustment. |
never@2950 | 224 | __ JMP(O0, 0); // return exception handler in caller |
never@2950 | 225 | __ delayed()->restore(I5_savedSP, G0, SP); |
never@2950 | 226 | |
never@2950 | 227 | // (same old exception object is already in Oexception; see above) |
never@2950 | 228 | // Note that an "issuing PC" is actually the next PC after the call |
never@2950 | 229 | } |
never@2950 | 230 | |
never@2950 | 231 | void MethodHandles::RicochetFrame::enter_ricochet_frame(MacroAssembler* _masm, |
never@2950 | 232 | Register recv_reg, |
never@2950 | 233 | Register argv_reg, |
never@2950 | 234 | address return_handler) { |
never@2950 | 235 | // does not include the __ save() |
never@2950 | 236 | assert(argv_reg == Gargs, ""); |
never@2950 | 237 | Address G3_mh_vmtarget( recv_reg, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes()); |
never@2950 | 238 | Address G3_amh_conversion(recv_reg, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes()); |
never@2950 | 239 | |
never@2950 | 240 | // Create the RicochetFrame. |
never@2950 | 241 | // Unlike on x86 we can store all required information in local |
never@2950 | 242 | // registers. |
never@2950 | 243 | BLOCK_COMMENT("push RicochetFrame {"); |
never@2950 | 244 | __ set(ExternalAddress(return_handler), L1_continuation); |
never@2950 | 245 | __ load_heap_oop(G3_mh_vmtarget, L2_saved_target); |
never@2950 | 246 | __ mov(G0, L3_saved_args_layout); |
never@2950 | 247 | __ mov(Gargs, L4_saved_args_base); |
never@2950 | 248 | __ lduw(G3_amh_conversion, L5_conversion); // 32-bit field |
never@2950 | 249 | // I5, I6, I7 are already set up |
never@2950 | 250 | DEBUG_ONLY(__ set((int32_t) MAGIC_NUMBER_1, L0_magic_number_1)); |
never@2950 | 251 | BLOCK_COMMENT("} RicochetFrame"); |
never@2950 | 252 | } |
never@2950 | 253 | |
never@2950 | 254 | void MethodHandles::RicochetFrame::leave_ricochet_frame(MacroAssembler* _masm, |
never@2950 | 255 | Register recv_reg, |
never@2950 | 256 | Register new_sp_reg, |
never@2950 | 257 | Register sender_pc_reg) { |
never@2950 | 258 | assert(new_sp_reg == I5_savedSP, "exact_sender_sp already in place"); |
never@2950 | 259 | assert(sender_pc_reg == I7, "in a fixed place"); |
never@2950 | 260 | // does not include the __ ret() & __ restore() |
never@2950 | 261 | assert_different_registers(recv_reg, new_sp_reg, sender_pc_reg); |
never@2950 | 262 | // Take down the frame. |
never@2950 | 263 | // Cf. InterpreterMacroAssembler::remove_activation. |
never@2950 | 264 | BLOCK_COMMENT("end_ricochet_frame {"); |
never@2950 | 265 | if (recv_reg->is_valid()) |
never@2950 | 266 | __ mov(L2_saved_target, recv_reg); |
never@2950 | 267 | BLOCK_COMMENT("} end_ricochet_frame"); |
never@2950 | 268 | } |
never@2950 | 269 | |
never@2950 | 270 | // Emit code to verify that FP is pointing at a valid ricochet frame. |
never@2950 | 271 | #ifdef ASSERT |
never@2950 | 272 | enum { |
never@2954 | 273 | ARG_LIMIT = 255, SLOP = 45, |
never@2950 | 274 | // use this parameter for checking for garbage stack movements: |
never@2950 | 275 | UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP) |
never@2950 | 276 | // the slop defends against false alarms due to fencepost errors |
never@2950 | 277 | }; |
never@2950 | 278 | |
never@2950 | 279 | void MethodHandles::RicochetFrame::verify_clean(MacroAssembler* _masm) { |
never@2950 | 280 | // The stack should look like this: |
never@2950 | 281 | // ... keep1 | dest=42 | keep2 | magic | handler | magic | recursive args | [RF] |
never@2950 | 282 | // Check various invariants. |
never@2950 | 283 | |
never@2950 | 284 | Register O7_temp = O7, O5_temp = O5; |
never@2950 | 285 | |
never@2950 | 286 | Label L_ok_1, L_ok_2, L_ok_3, L_ok_4; |
never@2950 | 287 | BLOCK_COMMENT("verify_clean {"); |
never@2950 | 288 | // Magic numbers must check out: |
never@2950 | 289 | __ set((int32_t) MAGIC_NUMBER_1, O7_temp); |
kvn@3037 | 290 | __ cmp_and_br_short(O7_temp, L0_magic_number_1, Assembler::equal, Assembler::pt, L_ok_1); |
never@2950 | 291 | __ stop("damaged ricochet frame: MAGIC_NUMBER_1 not found"); |
never@2950 | 292 | |
never@2950 | 293 | __ BIND(L_ok_1); |
never@2950 | 294 | |
never@2950 | 295 | // Arguments pointer must look reasonable: |
never@2950 | 296 | #ifdef _LP64 |
never@2950 | 297 | Register FP_temp = O5_temp; |
never@2950 | 298 | __ add(FP, STACK_BIAS, FP_temp); |
never@2950 | 299 | #else |
never@2950 | 300 | Register FP_temp = FP; |
never@2950 | 301 | #endif |
kvn@3037 | 302 | __ cmp_and_brx_short(L4_saved_args_base, FP_temp, Assembler::greaterEqualUnsigned, Assembler::pt, L_ok_2); |
never@2950 | 303 | __ stop("damaged ricochet frame: L4 < FP"); |
never@2950 | 304 | |
never@2950 | 305 | __ BIND(L_ok_2); |
never@2978 | 306 | // Disable until we decide on it's fate |
never@2978 | 307 | // __ sub(L4_saved_args_base, UNREASONABLE_STACK_MOVE * Interpreter::stackElementSize, O7_temp); |
never@2978 | 308 | // __ cmp(O7_temp, FP_temp); |
never@2978 | 309 | // __ br(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok_3); |
never@2978 | 310 | // __ delayed()->nop(); |
never@2978 | 311 | // __ stop("damaged ricochet frame: (L4 - UNREASONABLE_STACK_MOVE) > FP"); |
never@2950 | 312 | |
never@2950 | 313 | __ BIND(L_ok_3); |
never@2950 | 314 | extract_conversion_dest_type(_masm, L5_conversion, O7_temp); |
kvn@3037 | 315 | __ cmp_and_br_short(O7_temp, T_VOID, Assembler::equal, Assembler::pt, L_ok_4); |
never@2950 | 316 | extract_conversion_vminfo(_masm, L5_conversion, O5_temp); |
never@2950 | 317 | __ ld_ptr(L4_saved_args_base, __ argument_offset(O5_temp, O5_temp), O7_temp); |
twisti@3310 | 318 | assert(Assembler::is_simm13(RETURN_VALUE_PLACEHOLDER), "must be simm13"); |
kvn@3037 | 319 | __ cmp_and_brx_short(O7_temp, (int32_t) RETURN_VALUE_PLACEHOLDER, Assembler::equal, Assembler::pt, L_ok_4); |
never@2950 | 320 | __ stop("damaged ricochet frame: RETURN_VALUE_PLACEHOLDER not found"); |
never@2950 | 321 | __ BIND(L_ok_4); |
never@2950 | 322 | BLOCK_COMMENT("} verify_clean"); |
never@2950 | 323 | } |
never@2950 | 324 | #endif //ASSERT |
never@2950 | 325 | |
never@2950 | 326 | void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg) { |
never@2950 | 327 | if (VerifyMethodHandles) |
never@2950 | 328 | verify_klass(_masm, klass_reg, SystemDictionaryHandles::Class_klass(), temp_reg, temp2_reg, |
never@2950 | 329 | "AMH argument is a Class"); |
never@2950 | 330 | __ load_heap_oop(Address(klass_reg, java_lang_Class::klass_offset_in_bytes()), klass_reg); |
never@2950 | 331 | } |
never@2950 | 332 | |
never@2950 | 333 | void MethodHandles::load_conversion_vminfo(MacroAssembler* _masm, Address conversion_field_addr, Register reg) { |
never@2950 | 334 | assert(CONV_VMINFO_SHIFT == 0, "preshifted"); |
never@2950 | 335 | assert(CONV_VMINFO_MASK == right_n_bits(BitsPerByte), "else change type of following load"); |
never@2950 | 336 | __ ldub(conversion_field_addr.plus_disp(BytesPerInt - 1), reg); |
never@2950 | 337 | } |
never@2950 | 338 | |
never@2950 | 339 | void MethodHandles::extract_conversion_vminfo(MacroAssembler* _masm, Register conversion_field_reg, Register reg) { |
never@2950 | 340 | assert(CONV_VMINFO_SHIFT == 0, "preshifted"); |
never@2950 | 341 | __ and3(conversion_field_reg, CONV_VMINFO_MASK, reg); |
never@2950 | 342 | } |
never@2950 | 343 | |
never@2950 | 344 | void MethodHandles::extract_conversion_dest_type(MacroAssembler* _masm, Register conversion_field_reg, Register reg) { |
never@2950 | 345 | __ srl(conversion_field_reg, CONV_DEST_TYPE_SHIFT, reg); |
never@2950 | 346 | __ and3(reg, 0x0F, reg); |
never@2950 | 347 | } |
never@2950 | 348 | |
never@2950 | 349 | void MethodHandles::load_stack_move(MacroAssembler* _masm, |
never@2950 | 350 | Address G3_amh_conversion, |
never@2950 | 351 | Register stack_move_reg) { |
never@2950 | 352 | BLOCK_COMMENT("load_stack_move {"); |
never@2950 | 353 | __ ldsw(G3_amh_conversion, stack_move_reg); |
never@2950 | 354 | __ sra(stack_move_reg, CONV_STACK_MOVE_SHIFT, stack_move_reg); |
never@3255 | 355 | #ifdef ASSERT |
never@2950 | 356 | if (VerifyMethodHandles) { |
never@2950 | 357 | Label L_ok, L_bad; |
never@2950 | 358 | int32_t stack_move_limit = 0x0800; // extra-large |
kvn@3037 | 359 | __ cmp_and_br_short(stack_move_reg, stack_move_limit, Assembler::greaterEqual, Assembler::pn, L_bad); |
never@2950 | 360 | __ cmp(stack_move_reg, -stack_move_limit); |
never@2950 | 361 | __ br(Assembler::greater, false, Assembler::pt, L_ok); |
never@2950 | 362 | __ delayed()->nop(); |
never@2950 | 363 | __ BIND(L_bad); |
never@2950 | 364 | __ stop("load_stack_move of garbage value"); |
never@2950 | 365 | __ BIND(L_ok); |
never@2950 | 366 | } |
never@3255 | 367 | #endif |
never@2950 | 368 | BLOCK_COMMENT("} load_stack_move"); |
never@2950 | 369 | } |
never@2950 | 370 | |
never@2950 | 371 | #ifdef ASSERT |
never@2950 | 372 | void MethodHandles::RicochetFrame::verify() const { |
never@2950 | 373 | assert(magic_number_1() == MAGIC_NUMBER_1, ""); |
never@2950 | 374 | if (!Universe::heap()->is_gc_active()) { |
never@2950 | 375 | if (saved_args_layout() != NULL) { |
never@2950 | 376 | assert(saved_args_layout()->is_method(), "must be valid oop"); |
never@2950 | 377 | } |
never@2950 | 378 | if (saved_target() != NULL) { |
never@2950 | 379 | assert(java_lang_invoke_MethodHandle::is_instance(saved_target()), "checking frame value"); |
never@2950 | 380 | } |
never@2950 | 381 | } |
never@2950 | 382 | int conv_op = adapter_conversion_op(conversion()); |
never@2950 | 383 | assert(conv_op == java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS || |
never@2950 | 384 | conv_op == java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS || |
never@2950 | 385 | conv_op == java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF, |
never@2950 | 386 | "must be a sane conversion"); |
never@2950 | 387 | if (has_return_value_slot()) { |
never@2950 | 388 | assert(*return_value_slot_addr() == RETURN_VALUE_PLACEHOLDER, ""); |
never@2950 | 389 | } |
never@2950 | 390 | } |
never@2950 | 391 | |
never@2950 | 392 | void MethodHandles::verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) { |
never@2950 | 393 | // Verify that argslot lies within (Gargs, FP]. |
never@2950 | 394 | Label L_ok, L_bad; |
never@2950 | 395 | BLOCK_COMMENT("verify_argslot {"); |
kvn@3037 | 396 | __ cmp_and_brx_short(Gargs, argslot_reg, Assembler::greaterUnsigned, Assembler::pn, L_bad); |
never@2950 | 397 | __ add(FP, STACK_BIAS, temp_reg); // STACK_BIAS is zero on !_LP64 |
kvn@3037 | 398 | __ cmp_and_brx_short(argslot_reg, temp_reg, Assembler::lessEqualUnsigned, Assembler::pt, L_ok); |
never@2950 | 399 | __ BIND(L_bad); |
never@2950 | 400 | __ stop(error_message); |
never@2950 | 401 | __ BIND(L_ok); |
never@2950 | 402 | BLOCK_COMMENT("} verify_argslot"); |
never@2950 | 403 | } |
never@2950 | 404 | |
never@2950 | 405 | void MethodHandles::verify_argslots(MacroAssembler* _masm, |
never@2950 | 406 | RegisterOrConstant arg_slots, |
never@2950 | 407 | Register arg_slot_base_reg, |
never@2950 | 408 | Register temp_reg, |
never@2950 | 409 | Register temp2_reg, |
never@2950 | 410 | bool negate_argslots, |
never@2950 | 411 | const char* error_message) { |
never@2950 | 412 | // Verify that [argslot..argslot+size) lies within (Gargs, FP). |
never@2950 | 413 | Label L_ok, L_bad; |
never@2950 | 414 | BLOCK_COMMENT("verify_argslots {"); |
never@2950 | 415 | if (negate_argslots) { |
never@2950 | 416 | if (arg_slots.is_constant()) { |
never@2950 | 417 | arg_slots = -1 * arg_slots.as_constant(); |
never@2950 | 418 | } else { |
never@2950 | 419 | __ neg(arg_slots.as_register(), temp_reg); |
never@2950 | 420 | arg_slots = temp_reg; |
never@2950 | 421 | } |
never@2950 | 422 | } |
never@2950 | 423 | __ add(arg_slot_base_reg, __ argument_offset(arg_slots, temp_reg), temp_reg); |
never@2950 | 424 | __ add(FP, STACK_BIAS, temp2_reg); // STACK_BIAS is zero on !_LP64 |
kvn@3037 | 425 | __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::greaterUnsigned, Assembler::pn, L_bad); |
never@2950 | 426 | // Gargs points to the first word so adjust by BytesPerWord |
never@2950 | 427 | __ add(arg_slot_base_reg, BytesPerWord, temp_reg); |
kvn@3037 | 428 | __ cmp_and_brx_short(Gargs, temp_reg, Assembler::lessEqualUnsigned, Assembler::pt, L_ok); |
never@2950 | 429 | __ BIND(L_bad); |
never@2950 | 430 | __ stop(error_message); |
never@2950 | 431 | __ BIND(L_ok); |
never@2950 | 432 | BLOCK_COMMENT("} verify_argslots"); |
never@2950 | 433 | } |
never@2950 | 434 | |
never@2950 | 435 | // Make sure that arg_slots has the same sign as the given direction. |
never@2950 | 436 | // If (and only if) arg_slots is a assembly-time constant, also allow it to be zero. |
never@2950 | 437 | void MethodHandles::verify_stack_move(MacroAssembler* _masm, |
never@2950 | 438 | RegisterOrConstant arg_slots, int direction) { |
never@2950 | 439 | enum { UNREASONABLE_STACK_MOVE = 256 * 4 }; // limit of 255 arguments |
never@2950 | 440 | bool allow_zero = arg_slots.is_constant(); |
never@2950 | 441 | if (direction == 0) { direction = +1; allow_zero = true; } |
never@2950 | 442 | assert(stack_move_unit() == -1, "else add extra checks here"); |
never@2950 | 443 | if (arg_slots.is_register()) { |
never@2950 | 444 | Label L_ok, L_bad; |
never@2950 | 445 | BLOCK_COMMENT("verify_stack_move {"); |
never@2950 | 446 | // __ btst(-stack_move_unit() - 1, arg_slots.as_register()); // no need |
never@2950 | 447 | // __ br(Assembler::notZero, false, Assembler::pn, L_bad); |
never@2950 | 448 | // __ delayed()->nop(); |
never@2950 | 449 | __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); |
never@2950 | 450 | if (direction > 0) { |
never@2950 | 451 | __ br(allow_zero ? Assembler::less : Assembler::lessEqual, false, Assembler::pn, L_bad); |
never@2950 | 452 | __ delayed()->nop(); |
never@2950 | 453 | __ cmp(arg_slots.as_register(), (int32_t) UNREASONABLE_STACK_MOVE); |
never@2950 | 454 | __ br(Assembler::less, false, Assembler::pn, L_ok); |
never@2950 | 455 | __ delayed()->nop(); |
never@2950 | 456 | } else { |
never@2950 | 457 | __ br(allow_zero ? Assembler::greater : Assembler::greaterEqual, false, Assembler::pn, L_bad); |
never@2950 | 458 | __ delayed()->nop(); |
never@2950 | 459 | __ cmp(arg_slots.as_register(), (int32_t) -UNREASONABLE_STACK_MOVE); |
never@2950 | 460 | __ br(Assembler::greater, false, Assembler::pn, L_ok); |
never@2950 | 461 | __ delayed()->nop(); |
never@2950 | 462 | } |
never@2950 | 463 | __ BIND(L_bad); |
never@2950 | 464 | if (direction > 0) |
never@2950 | 465 | __ stop("assert arg_slots > 0"); |
never@2950 | 466 | else |
never@2950 | 467 | __ stop("assert arg_slots < 0"); |
never@2950 | 468 | __ BIND(L_ok); |
never@2950 | 469 | BLOCK_COMMENT("} verify_stack_move"); |
never@2950 | 470 | } else { |
never@2950 | 471 | intptr_t size = arg_slots.as_constant(); |
never@2950 | 472 | if (direction < 0) size = -size; |
never@2950 | 473 | assert(size >= 0, "correct direction of constant move"); |
never@2950 | 474 | assert(size < UNREASONABLE_STACK_MOVE, "reasonable size of constant move"); |
never@2950 | 475 | } |
never@2950 | 476 | } |
never@2950 | 477 | |
never@2950 | 478 | void MethodHandles::verify_klass(MacroAssembler* _masm, |
never@2950 | 479 | Register obj_reg, KlassHandle klass, |
never@2950 | 480 | Register temp_reg, Register temp2_reg, |
never@2950 | 481 | const char* error_message) { |
never@2950 | 482 | oop* klass_addr = klass.raw_value(); |
never@2950 | 483 | assert(klass_addr >= SystemDictionaryHandles::Object_klass().raw_value() && |
never@2950 | 484 | klass_addr <= SystemDictionaryHandles::Long_klass().raw_value(), |
never@2950 | 485 | "must be one of the SystemDictionaryHandles"); |
never@2950 | 486 | Label L_ok, L_bad; |
never@2950 | 487 | BLOCK_COMMENT("verify_klass {"); |
never@2950 | 488 | __ verify_oop(obj_reg); |
kvn@3037 | 489 | __ br_null_short(obj_reg, Assembler::pn, L_bad); |
never@2950 | 490 | __ load_klass(obj_reg, temp_reg); |
never@2950 | 491 | __ set(ExternalAddress(klass_addr), temp2_reg); |
never@2950 | 492 | __ ld_ptr(Address(temp2_reg, 0), temp2_reg); |
kvn@3037 | 493 | __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok); |
never@2950 | 494 | intptr_t super_check_offset = klass->super_check_offset(); |
never@2950 | 495 | __ ld_ptr(Address(temp_reg, super_check_offset), temp_reg); |
never@2950 | 496 | __ set(ExternalAddress(klass_addr), temp2_reg); |
never@2950 | 497 | __ ld_ptr(Address(temp2_reg, 0), temp2_reg); |
kvn@3037 | 498 | __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok); |
never@2950 | 499 | __ BIND(L_bad); |
never@2950 | 500 | __ stop(error_message); |
never@2950 | 501 | __ BIND(L_ok); |
never@2950 | 502 | BLOCK_COMMENT("} verify_klass"); |
never@2950 | 503 | } |
never@2950 | 504 | #endif // ASSERT |
jrose@1145 | 505 | |
never@3005 | 506 | |
never@3005 | 507 | void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp) { |
never@3005 | 508 | assert(method == G5_method, "interpreter calling convention"); |
never@3005 | 509 | __ verify_oop(method); |
never@3005 | 510 | __ ld_ptr(G5_method, in_bytes(methodOopDesc::from_interpreted_offset()), target); |
never@3005 | 511 | if (JvmtiExport::can_post_interpreter_events()) { |
never@3005 | 512 | // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
never@3005 | 513 | // compiled code in threads for which the event is enabled. Check here for |
never@3005 | 514 | // interp_only_mode if these events CAN be enabled. |
never@3005 | 515 | __ verify_thread(); |
never@3005 | 516 | Label skip_compiled_code; |
never@3005 | 517 | |
never@3005 | 518 | const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
never@3005 | 519 | __ ld(interp_only, temp); |
never@3005 | 520 | __ tst(temp); |
never@3005 | 521 | __ br(Assembler::notZero, true, Assembler::pn, skip_compiled_code); |
never@3005 | 522 | __ delayed()->ld_ptr(G5_method, in_bytes(methodOopDesc::interpreter_entry_offset()), target); |
never@3005 | 523 | __ bind(skip_compiled_code); |
never@3005 | 524 | } |
never@3005 | 525 | __ jmp(target, 0); |
never@3005 | 526 | __ delayed()->nop(); |
never@3005 | 527 | } |
never@3005 | 528 | |
never@3005 | 529 | |
jrose@1145 | 530 | // Code generation |
jrose@1145 | 531 | address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { |
twisti@2271 | 532 | // I5_savedSP/O5_savedSP: sender SP (must preserve) |
twisti@1858 | 533 | // G4 (Gargs): incoming argument list (must preserve) |
twisti@2271 | 534 | // G5_method: invoke methodOop |
twisti@1858 | 535 | // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots]) |
twisti@2271 | 536 | // O0, O1, O2, O3, O4: garbage temps, blown away |
twisti@2271 | 537 | Register O0_mtype = O0; |
twisti@1858 | 538 | Register O1_scratch = O1; |
jrose@2266 | 539 | Register O2_scratch = O2; |
jrose@2266 | 540 | Register O3_scratch = O3; |
twisti@2271 | 541 | Register O4_argslot = O4; |
jrose@2266 | 542 | Register O4_argbase = O4; |
twisti@1858 | 543 | |
twisti@1858 | 544 | // emit WrongMethodType path first, to enable back-branch from main path |
twisti@1858 | 545 | Label wrong_method_type; |
twisti@1858 | 546 | __ bind(wrong_method_type); |
jrose@2266 | 547 | Label invoke_generic_slow_path; |
jrose@2266 | 548 | assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
jrose@2266 | 549 | __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
jrose@2266 | 550 | __ cmp(O1_scratch, (int) vmIntrinsics::_invokeExact); |
jrose@2266 | 551 | __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path); |
jrose@2266 | 552 | __ delayed()->nop(); |
twisti@2271 | 553 | __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType |
never@2978 | 554 | __ mov(G3_method_handle, G3_method_handle); // already in this register |
never@2978 | 555 | // O0 will be filled in with JavaThread in stub |
never@2978 | 556 | __ jump_to(AddressLiteral(StubRoutines::throw_WrongMethodTypeException_entry()), O3_scratch); |
twisti@1858 | 557 | __ delayed()->nop(); |
twisti@1858 | 558 | |
twisti@1858 | 559 | // here's where control starts out: |
twisti@1858 | 560 | __ align(CodeEntryAlignment); |
twisti@1858 | 561 | address entry_point = __ pc(); |
twisti@1858 | 562 | |
jrose@2266 | 563 | // fetch the MethodType from the method handle |
never@2950 | 564 | // FIXME: Interpreter should transmit pre-popped stack pointer, to locate base of arg list. |
never@2950 | 565 | // This would simplify several touchy bits of code. |
never@2950 | 566 | // See 6984712: JSR 292 method handle calls need a clean argument base pointer |
twisti@1858 | 567 | { |
twisti@1858 | 568 | Register tem = G5_method; |
twisti@1858 | 569 | for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { |
twisti@2271 | 570 | __ ld_ptr(Address(tem, *pchase), O0_mtype); |
twisti@2271 | 571 | tem = O0_mtype; // in case there is another indirection |
twisti@1858 | 572 | } |
twisti@1858 | 573 | } |
twisti@1858 | 574 | |
twisti@1858 | 575 | // given the MethodType, find out where the MH argument is buried |
jrose@2639 | 576 | __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O4_argslot); |
jrose@2639 | 577 | __ ldsw( Address(O4_argslot, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O4_argslot); |
never@2950 | 578 | __ add(__ argument_address(O4_argslot, O4_argslot, 1), O4_argbase); |
jrose@2266 | 579 | // Note: argument_address uses its input as a scratch register! |
never@2950 | 580 | Address mh_receiver_slot_addr(O4_argbase, -Interpreter::stackElementSize); |
never@2950 | 581 | __ ld_ptr(mh_receiver_slot_addr, G3_method_handle); |
twisti@1858 | 582 | |
jrose@2266 | 583 | trace_method_handle(_masm, "invokeExact"); |
jrose@2266 | 584 | |
twisti@2271 | 585 | __ check_method_handle_type(O0_mtype, G3_method_handle, O1_scratch, wrong_method_type); |
never@2950 | 586 | |
never@2950 | 587 | // Nobody uses the MH receiver slot after this. Make sure. |
never@2950 | 588 | DEBUG_ONLY(__ set((int32_t) 0x999999, O1_scratch); __ st_ptr(O1_scratch, mh_receiver_slot_addr)); |
never@2950 | 589 | |
twisti@1858 | 590 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 591 | |
jrose@2266 | 592 | // for invokeGeneric (only), apply argument and result conversions on the fly |
jrose@2266 | 593 | __ bind(invoke_generic_slow_path); |
jrose@2266 | 594 | #ifdef ASSERT |
never@2950 | 595 | if (VerifyMethodHandles) { |
never@2950 | 596 | Label L; |
jrose@2266 | 597 | __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
jrose@2266 | 598 | __ cmp(O1_scratch, (int) vmIntrinsics::_invokeGeneric); |
jrose@2266 | 599 | __ brx(Assembler::equal, false, Assembler::pt, L); |
jrose@2266 | 600 | __ delayed()->nop(); |
jrose@2266 | 601 | __ stop("bad methodOop::intrinsic_id"); |
jrose@2266 | 602 | __ bind(L); |
jrose@2266 | 603 | } |
jrose@2266 | 604 | #endif //ASSERT |
jrose@2266 | 605 | |
jrose@2266 | 606 | // make room on the stack for another pointer: |
never@2950 | 607 | insert_arg_slots(_masm, 2 * stack_move_unit(), O4_argbase, O1_scratch, O2_scratch, O3_scratch); |
jrose@2266 | 608 | // load up an adapter from the calling type (Java weaves this) |
jrose@2266 | 609 | Register O2_form = O2_scratch; |
jrose@2266 | 610 | Register O3_adapter = O3_scratch; |
jrose@2639 | 611 | __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O2_form); |
twisti@2903 | 612 | __ load_heap_oop(Address(O2_form, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); |
twisti@2903 | 613 | __ verify_oop(O3_adapter); |
jrose@2266 | 614 | __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize)); |
jrose@2266 | 615 | // As a trusted first argument, pass the type being called, so the adapter knows |
jrose@2266 | 616 | // the actual types of the arguments and return values. |
jrose@2266 | 617 | // (Generic invokers are shared among form-families of method-type.) |
twisti@2271 | 618 | __ st_ptr(O0_mtype, Address(O4_argbase, 0 * Interpreter::stackElementSize)); |
jrose@2266 | 619 | // FIXME: assert that O3_adapter is of the right method-type. |
jrose@2266 | 620 | __ mov(O3_adapter, G3_method_handle); |
jrose@2266 | 621 | trace_method_handle(_masm, "invokeGeneric"); |
jrose@2266 | 622 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
jrose@2266 | 623 | |
twisti@1858 | 624 | return entry_point; |
jrose@1145 | 625 | } |
jrose@1145 | 626 | |
never@2950 | 627 | // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant. |
never@2950 | 628 | static RegisterOrConstant constant(int value) { |
never@2950 | 629 | return RegisterOrConstant(value); |
never@2950 | 630 | } |
twisti@1858 | 631 | |
never@2950 | 632 | static void load_vmargslot(MacroAssembler* _masm, Address vmargslot_addr, Register result) { |
never@2950 | 633 | __ ldsw(vmargslot_addr, result); |
never@2950 | 634 | } |
never@2950 | 635 | |
never@2950 | 636 | static RegisterOrConstant adjust_SP_and_Gargs_down_by_slots(MacroAssembler* _masm, |
never@2950 | 637 | RegisterOrConstant arg_slots, |
never@2950 | 638 | Register temp_reg, Register temp2_reg) { |
never@2950 | 639 | // Keep the stack pointer 2*wordSize aligned. |
never@2950 | 640 | const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); |
never@2950 | 641 | if (arg_slots.is_constant()) { |
never@2950 | 642 | const int offset = arg_slots.as_constant() << LogBytesPerWord; |
never@2950 | 643 | const int masked_offset = round_to(offset, 2 * BytesPerWord); |
never@2950 | 644 | const int masked_offset2 = (offset + 1*BytesPerWord) & ~TwoWordAlignmentMask; |
never@2950 | 645 | assert(masked_offset == masked_offset2, "must agree"); |
never@2950 | 646 | __ sub(Gargs, offset, Gargs); |
never@2950 | 647 | __ sub(SP, masked_offset, SP ); |
never@2950 | 648 | return offset; |
never@2950 | 649 | } else { |
twisti@1858 | 650 | #ifdef ASSERT |
never@2950 | 651 | { |
never@2950 | 652 | Label L_ok; |
kvn@3037 | 653 | __ cmp_and_br_short(arg_slots.as_register(), 0, Assembler::greaterEqual, Assembler::pt, L_ok); |
never@2950 | 654 | __ stop("negative arg_slots"); |
never@2950 | 655 | __ bind(L_ok); |
never@2950 | 656 | } |
twisti@1858 | 657 | #endif |
never@2950 | 658 | __ sll_ptr(arg_slots.as_register(), LogBytesPerWord, temp_reg); |
never@2950 | 659 | __ add( temp_reg, 1*BytesPerWord, temp2_reg); |
never@2950 | 660 | __ andn(temp2_reg, TwoWordAlignmentMask, temp2_reg); |
never@2950 | 661 | __ sub(Gargs, temp_reg, Gargs); |
never@2950 | 662 | __ sub(SP, temp2_reg, SP ); |
never@2950 | 663 | return temp_reg; |
never@2950 | 664 | } |
twisti@1858 | 665 | } |
twisti@1858 | 666 | |
never@2950 | 667 | static RegisterOrConstant adjust_SP_and_Gargs_up_by_slots(MacroAssembler* _masm, |
never@2950 | 668 | RegisterOrConstant arg_slots, |
never@2950 | 669 | Register temp_reg, Register temp2_reg) { |
never@2950 | 670 | // Keep the stack pointer 2*wordSize aligned. |
never@2950 | 671 | const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); |
never@2950 | 672 | if (arg_slots.is_constant()) { |
never@2950 | 673 | const int offset = arg_slots.as_constant() << LogBytesPerWord; |
never@2950 | 674 | const int masked_offset = offset & ~TwoWordAlignmentMask; |
never@2950 | 675 | __ add(Gargs, offset, Gargs); |
never@2950 | 676 | __ add(SP, masked_offset, SP ); |
never@2950 | 677 | return offset; |
never@2950 | 678 | } else { |
never@2950 | 679 | __ sll_ptr(arg_slots.as_register(), LogBytesPerWord, temp_reg); |
never@2950 | 680 | __ andn(temp_reg, TwoWordAlignmentMask, temp2_reg); |
never@2950 | 681 | __ add(Gargs, temp_reg, Gargs); |
never@2950 | 682 | __ add(SP, temp2_reg, SP ); |
never@2950 | 683 | return temp_reg; |
never@2950 | 684 | } |
never@2950 | 685 | } |
twisti@1858 | 686 | |
twisti@1858 | 687 | // Helper to insert argument slots into the stack. |
never@2950 | 688 | // arg_slots must be a multiple of stack_move_unit() and < 0 |
never@2950 | 689 | // argslot_reg is decremented to point to the new (shifted) location of the argslot |
never@2950 | 690 | // But, temp_reg ends up holding the original value of argslot_reg. |
twisti@1858 | 691 | void MethodHandles::insert_arg_slots(MacroAssembler* _masm, |
twisti@1858 | 692 | RegisterOrConstant arg_slots, |
twisti@1858 | 693 | Register argslot_reg, |
twisti@1858 | 694 | Register temp_reg, Register temp2_reg, Register temp3_reg) { |
never@2950 | 695 | // allow constant zero |
never@2950 | 696 | if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
never@2950 | 697 | return; |
never@2950 | 698 | |
twisti@1858 | 699 | assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, |
twisti@1858 | 700 | (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); |
twisti@1858 | 701 | |
never@2950 | 702 | BLOCK_COMMENT("insert_arg_slots {"); |
never@2950 | 703 | if (VerifyMethodHandles) |
never@2950 | 704 | verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame"); |
never@2950 | 705 | if (VerifyMethodHandles) |
never@2950 | 706 | verify_stack_move(_masm, arg_slots, -1); |
twisti@1858 | 707 | |
twisti@1858 | 708 | // Make space on the stack for the inserted argument(s). |
twisti@1858 | 709 | // Then pull down everything shallower than argslot_reg. |
twisti@1858 | 710 | // The stacked return address gets pulled down with everything else. |
twisti@1858 | 711 | // That is, copy [sp, argslot) downward by -size words. In pseudo-code: |
twisti@1858 | 712 | // sp -= size; |
twisti@1858 | 713 | // for (temp = sp + size; temp < argslot; temp++) |
twisti@1858 | 714 | // temp[-size] = temp[0] |
twisti@1858 | 715 | // argslot -= size; |
twisti@1858 | 716 | |
never@2950 | 717 | // offset is temp3_reg in case of arg_slots being a register. |
never@2950 | 718 | RegisterOrConstant offset = adjust_SP_and_Gargs_up_by_slots(_masm, arg_slots, temp3_reg, temp_reg); |
never@2950 | 719 | __ sub(Gargs, offset, temp_reg); // source pointer for copy |
twisti@1858 | 720 | |
twisti@1858 | 721 | { |
twisti@1858 | 722 | Label loop; |
twisti@2204 | 723 | __ BIND(loop); |
twisti@1858 | 724 | // pull one word down each time through the loop |
never@2950 | 725 | __ ld_ptr( Address(temp_reg, 0 ), temp2_reg); |
never@2950 | 726 | __ st_ptr(temp2_reg, Address(temp_reg, offset) ); |
twisti@1858 | 727 | __ add(temp_reg, wordSize, temp_reg); |
kvn@3037 | 728 | __ cmp_and_brx_short(temp_reg, argslot_reg, Assembler::lessUnsigned, Assembler::pt, loop); |
twisti@1858 | 729 | } |
twisti@1858 | 730 | |
twisti@1858 | 731 | // Now move the argslot down, to point to the opened-up space. |
twisti@1858 | 732 | __ add(argslot_reg, offset, argslot_reg); |
twisti@2204 | 733 | BLOCK_COMMENT("} insert_arg_slots"); |
twisti@1858 | 734 | } |
twisti@1858 | 735 | |
twisti@1858 | 736 | |
twisti@1858 | 737 | // Helper to remove argument slots from the stack. |
never@2950 | 738 | // arg_slots must be a multiple of stack_move_unit() and > 0 |
twisti@1858 | 739 | void MethodHandles::remove_arg_slots(MacroAssembler* _masm, |
twisti@1858 | 740 | RegisterOrConstant arg_slots, |
twisti@1858 | 741 | Register argslot_reg, |
twisti@1858 | 742 | Register temp_reg, Register temp2_reg, Register temp3_reg) { |
never@2950 | 743 | // allow constant zero |
never@2950 | 744 | if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
never@2950 | 745 | return; |
twisti@1858 | 746 | assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, |
twisti@1858 | 747 | (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); |
twisti@1858 | 748 | |
never@2950 | 749 | BLOCK_COMMENT("remove_arg_slots {"); |
never@2950 | 750 | if (VerifyMethodHandles) |
never@2950 | 751 | verify_argslots(_masm, arg_slots, argslot_reg, temp_reg, temp2_reg, false, |
never@2950 | 752 | "deleted argument(s) must fall within current frame"); |
never@2950 | 753 | if (VerifyMethodHandles) |
never@2950 | 754 | verify_stack_move(_masm, arg_slots, +1); |
twisti@1858 | 755 | |
twisti@1858 | 756 | // Pull up everything shallower than argslot. |
twisti@1858 | 757 | // Then remove the excess space on the stack. |
twisti@1858 | 758 | // The stacked return address gets pulled up with everything else. |
twisti@1858 | 759 | // That is, copy [sp, argslot) upward by size words. In pseudo-code: |
twisti@1858 | 760 | // for (temp = argslot-1; temp >= sp; --temp) |
twisti@1858 | 761 | // temp[size] = temp[0] |
twisti@1858 | 762 | // argslot += size; |
twisti@1858 | 763 | // sp += size; |
never@2950 | 764 | |
never@2950 | 765 | RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); |
twisti@1858 | 766 | __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy |
never@2950 | 767 | |
twisti@1858 | 768 | { |
never@2950 | 769 | Label L_loop; |
never@2950 | 770 | __ BIND(L_loop); |
twisti@1858 | 771 | // pull one word up each time through the loop |
never@2950 | 772 | __ ld_ptr( Address(temp_reg, 0 ), temp2_reg); |
never@2950 | 773 | __ st_ptr(temp2_reg, Address(temp_reg, offset) ); |
twisti@1858 | 774 | __ sub(temp_reg, wordSize, temp_reg); |
kvn@3037 | 775 | __ cmp_and_brx_short(temp_reg, Gargs, Assembler::greaterEqualUnsigned, Assembler::pt, L_loop); |
twisti@1858 | 776 | } |
twisti@1858 | 777 | |
twisti@1858 | 778 | // And adjust the argslot address to point at the deletion point. |
twisti@1858 | 779 | __ add(argslot_reg, offset, argslot_reg); |
twisti@1858 | 780 | |
never@2950 | 781 | // We don't need the offset at this point anymore, just adjust SP and Gargs. |
never@2950 | 782 | (void) adjust_SP_and_Gargs_up_by_slots(_masm, arg_slots, temp3_reg, temp_reg); |
never@2950 | 783 | |
twisti@2204 | 784 | BLOCK_COMMENT("} remove_arg_slots"); |
twisti@1858 | 785 | } |
twisti@1858 | 786 | |
never@2950 | 787 | // Helper to copy argument slots to the top of the stack. |
never@2950 | 788 | // The sequence starts with argslot_reg and is counted by slot_count |
never@2950 | 789 | // slot_count must be a multiple of stack_move_unit() and >= 0 |
never@2950 | 790 | // This function blows the temps but does not change argslot_reg. |
never@2950 | 791 | void MethodHandles::push_arg_slots(MacroAssembler* _masm, |
never@2950 | 792 | Register argslot_reg, |
never@2950 | 793 | RegisterOrConstant slot_count, |
never@2950 | 794 | Register temp_reg, Register temp2_reg) { |
never@2950 | 795 | // allow constant zero |
never@2950 | 796 | if (slot_count.is_constant() && slot_count.as_constant() == 0) |
never@2950 | 797 | return; |
never@2950 | 798 | assert_different_registers(argslot_reg, temp_reg, temp2_reg, |
never@2950 | 799 | (!slot_count.is_register() ? Gargs : slot_count.as_register()), |
never@2950 | 800 | SP); |
never@2950 | 801 | assert(Interpreter::stackElementSize == wordSize, "else change this code"); |
never@2950 | 802 | |
never@2950 | 803 | BLOCK_COMMENT("push_arg_slots {"); |
never@2950 | 804 | if (VerifyMethodHandles) |
never@2950 | 805 | verify_stack_move(_masm, slot_count, 0); |
never@2950 | 806 | |
never@2950 | 807 | RegisterOrConstant offset = adjust_SP_and_Gargs_down_by_slots(_masm, slot_count, temp2_reg, temp_reg); |
never@2950 | 808 | |
never@2950 | 809 | if (slot_count.is_constant()) { |
never@2950 | 810 | for (int i = slot_count.as_constant() - 1; i >= 0; i--) { |
never@2950 | 811 | __ ld_ptr( Address(argslot_reg, i * wordSize), temp_reg); |
never@2950 | 812 | __ st_ptr(temp_reg, Address(Gargs, i * wordSize)); |
never@2950 | 813 | } |
never@2950 | 814 | } else { |
never@2950 | 815 | Label L_plural, L_loop, L_break; |
never@2950 | 816 | // Emit code to dynamically check for the common cases, zero and one slot. |
never@2950 | 817 | __ cmp(slot_count.as_register(), (int32_t) 1); |
never@2950 | 818 | __ br(Assembler::greater, false, Assembler::pn, L_plural); |
never@2950 | 819 | __ delayed()->nop(); |
never@2950 | 820 | __ br(Assembler::less, false, Assembler::pn, L_break); |
never@2950 | 821 | __ delayed()->nop(); |
never@2950 | 822 | __ ld_ptr( Address(argslot_reg, 0), temp_reg); |
never@2950 | 823 | __ st_ptr(temp_reg, Address(Gargs, 0)); |
kvn@3037 | 824 | __ ba_short(L_break); |
never@2950 | 825 | __ BIND(L_plural); |
never@2950 | 826 | |
never@2950 | 827 | // Loop for 2 or more: |
never@2950 | 828 | // top = &argslot[slot_count] |
never@2950 | 829 | // while (top > argslot) *(--Gargs) = *(--top) |
never@2950 | 830 | Register top_reg = temp_reg; |
never@2950 | 831 | __ add(argslot_reg, offset, top_reg); |
never@2950 | 832 | __ add(Gargs, offset, Gargs ); // move back up again so we can go down |
never@2950 | 833 | __ BIND(L_loop); |
never@2950 | 834 | __ sub(top_reg, wordSize, top_reg); |
never@2950 | 835 | __ sub(Gargs, wordSize, Gargs ); |
never@2950 | 836 | __ ld_ptr( Address(top_reg, 0), temp2_reg); |
never@2950 | 837 | __ st_ptr(temp2_reg, Address(Gargs, 0)); |
kvn@3037 | 838 | __ cmp_and_brx_short(top_reg, argslot_reg, Assembler::greaterUnsigned, Assembler::pt, L_loop); |
never@2950 | 839 | __ BIND(L_break); |
never@2950 | 840 | } |
never@2950 | 841 | BLOCK_COMMENT("} push_arg_slots"); |
never@2950 | 842 | } |
never@2950 | 843 | |
never@2950 | 844 | // in-place movement; no change to Gargs |
never@2950 | 845 | // blows temp_reg, temp2_reg |
never@2950 | 846 | void MethodHandles::move_arg_slots_up(MacroAssembler* _masm, |
never@2950 | 847 | Register bottom_reg, // invariant |
never@2950 | 848 | Address top_addr, // can use temp_reg |
never@2950 | 849 | RegisterOrConstant positive_distance_in_slots, // destroyed if register |
never@2950 | 850 | Register temp_reg, Register temp2_reg) { |
never@2950 | 851 | assert_different_registers(bottom_reg, |
never@2950 | 852 | temp_reg, temp2_reg, |
never@2950 | 853 | positive_distance_in_slots.register_or_noreg()); |
never@2950 | 854 | BLOCK_COMMENT("move_arg_slots_up {"); |
never@2950 | 855 | Label L_loop, L_break; |
never@2950 | 856 | Register top_reg = temp_reg; |
never@2950 | 857 | if (!top_addr.is_same_address(Address(top_reg, 0))) { |
never@2950 | 858 | __ add(top_addr, top_reg); |
never@2950 | 859 | } |
never@2950 | 860 | // Detect empty (or broken) loop: |
never@2950 | 861 | #ifdef ASSERT |
never@2950 | 862 | if (VerifyMethodHandles) { |
never@2950 | 863 | // Verify that &bottom < &top (non-empty interval) |
never@2950 | 864 | Label L_ok, L_bad; |
never@2950 | 865 | if (positive_distance_in_slots.is_register()) { |
never@2950 | 866 | __ cmp(positive_distance_in_slots.as_register(), (int32_t) 0); |
never@2950 | 867 | __ br(Assembler::lessEqual, false, Assembler::pn, L_bad); |
never@2950 | 868 | __ delayed()->nop(); |
never@2950 | 869 | } |
kvn@3037 | 870 | __ cmp_and_brx_short(bottom_reg, top_reg, Assembler::lessUnsigned, Assembler::pt, L_ok); |
never@2950 | 871 | __ BIND(L_bad); |
never@2950 | 872 | __ stop("valid bounds (copy up)"); |
never@2950 | 873 | __ BIND(L_ok); |
never@2950 | 874 | } |
never@2950 | 875 | #endif |
kvn@3037 | 876 | __ cmp_and_brx_short(bottom_reg, top_reg, Assembler::greaterEqualUnsigned, Assembler::pn, L_break); |
never@2950 | 877 | // work top down to bottom, copying contiguous data upwards |
never@2950 | 878 | // In pseudo-code: |
never@2950 | 879 | // while (--top >= bottom) *(top + distance) = *(top + 0); |
never@2950 | 880 | RegisterOrConstant offset = __ argument_offset(positive_distance_in_slots, positive_distance_in_slots.register_or_noreg()); |
never@2950 | 881 | __ BIND(L_loop); |
never@2950 | 882 | __ sub(top_reg, wordSize, top_reg); |
never@2950 | 883 | __ ld_ptr( Address(top_reg, 0 ), temp2_reg); |
never@2950 | 884 | __ st_ptr(temp2_reg, Address(top_reg, offset) ); |
kvn@3037 | 885 | __ cmp_and_brx_short(top_reg, bottom_reg, Assembler::greaterUnsigned, Assembler::pt, L_loop); |
never@2950 | 886 | assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
never@2950 | 887 | __ BIND(L_break); |
never@2950 | 888 | BLOCK_COMMENT("} move_arg_slots_up"); |
never@2950 | 889 | } |
never@2950 | 890 | |
never@2950 | 891 | // in-place movement; no change to rsp |
never@2950 | 892 | // blows temp_reg, temp2_reg |
never@2950 | 893 | void MethodHandles::move_arg_slots_down(MacroAssembler* _masm, |
never@2950 | 894 | Address bottom_addr, // can use temp_reg |
never@2950 | 895 | Register top_reg, // invariant |
never@2950 | 896 | RegisterOrConstant negative_distance_in_slots, // destroyed if register |
never@2950 | 897 | Register temp_reg, Register temp2_reg) { |
never@2950 | 898 | assert_different_registers(top_reg, |
never@2950 | 899 | negative_distance_in_slots.register_or_noreg(), |
never@2950 | 900 | temp_reg, temp2_reg); |
never@2950 | 901 | BLOCK_COMMENT("move_arg_slots_down {"); |
never@2950 | 902 | Label L_loop, L_break; |
never@2950 | 903 | Register bottom_reg = temp_reg; |
never@2950 | 904 | if (!bottom_addr.is_same_address(Address(bottom_reg, 0))) { |
never@2950 | 905 | __ add(bottom_addr, bottom_reg); |
never@2950 | 906 | } |
never@2950 | 907 | // Detect empty (or broken) loop: |
never@2950 | 908 | #ifdef ASSERT |
never@2950 | 909 | assert(!negative_distance_in_slots.is_constant() || negative_distance_in_slots.as_constant() < 0, ""); |
never@2950 | 910 | if (VerifyMethodHandles) { |
never@2950 | 911 | // Verify that &bottom < &top (non-empty interval) |
never@2950 | 912 | Label L_ok, L_bad; |
never@2950 | 913 | if (negative_distance_in_slots.is_register()) { |
never@2950 | 914 | __ cmp(negative_distance_in_slots.as_register(), (int32_t) 0); |
never@2950 | 915 | __ br(Assembler::greaterEqual, false, Assembler::pn, L_bad); |
never@2950 | 916 | __ delayed()->nop(); |
never@2950 | 917 | } |
kvn@3037 | 918 | __ cmp_and_brx_short(bottom_reg, top_reg, Assembler::lessUnsigned, Assembler::pt, L_ok); |
never@2950 | 919 | __ BIND(L_bad); |
never@2950 | 920 | __ stop("valid bounds (copy down)"); |
never@2950 | 921 | __ BIND(L_ok); |
never@2950 | 922 | } |
never@2950 | 923 | #endif |
kvn@3037 | 924 | __ cmp_and_brx_short(bottom_reg, top_reg, Assembler::greaterEqualUnsigned, Assembler::pn, L_break); |
never@2950 | 925 | // work bottom up to top, copying contiguous data downwards |
never@2950 | 926 | // In pseudo-code: |
never@2950 | 927 | // while (bottom < top) *(bottom - distance) = *(bottom + 0), bottom++; |
never@2950 | 928 | RegisterOrConstant offset = __ argument_offset(negative_distance_in_slots, negative_distance_in_slots.register_or_noreg()); |
never@2950 | 929 | __ BIND(L_loop); |
never@2950 | 930 | __ ld_ptr( Address(bottom_reg, 0 ), temp2_reg); |
never@2950 | 931 | __ st_ptr(temp2_reg, Address(bottom_reg, offset) ); |
never@2950 | 932 | __ add(bottom_reg, wordSize, bottom_reg); |
kvn@3037 | 933 | __ cmp_and_brx_short(bottom_reg, top_reg, Assembler::lessUnsigned, Assembler::pt, L_loop); |
never@2950 | 934 | assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
never@2950 | 935 | __ BIND(L_break); |
never@2950 | 936 | BLOCK_COMMENT("} move_arg_slots_down"); |
never@2950 | 937 | } |
never@2950 | 938 | |
never@2950 | 939 | // Copy from a field or array element to a stacked argument slot. |
never@2950 | 940 | // is_element (ignored) says whether caller is loading an array element instead of an instance field. |
never@2950 | 941 | void MethodHandles::move_typed_arg(MacroAssembler* _masm, |
never@2950 | 942 | BasicType type, bool is_element, |
never@2950 | 943 | Address value_src, Address slot_dest, |
never@2950 | 944 | Register temp_reg) { |
never@2950 | 945 | assert(!slot_dest.uses(temp_reg), "must be different register"); |
never@2950 | 946 | BLOCK_COMMENT(!is_element ? "move_typed_arg {" : "move_typed_arg { (array element)"); |
never@2950 | 947 | if (type == T_OBJECT || type == T_ARRAY) { |
never@2950 | 948 | __ load_heap_oop(value_src, temp_reg); |
never@2950 | 949 | __ verify_oop(temp_reg); |
never@2950 | 950 | __ st_ptr(temp_reg, slot_dest); |
never@2950 | 951 | } else if (type != T_VOID) { |
never@2950 | 952 | int arg_size = type2aelembytes(type); |
never@2950 | 953 | bool arg_is_signed = is_signed_subword_type(type); |
never@2950 | 954 | int slot_size = is_subword_type(type) ? type2aelembytes(T_INT) : arg_size; // store int sub-words as int |
never@2950 | 955 | __ load_sized_value( value_src, temp_reg, arg_size, arg_is_signed); |
never@2950 | 956 | __ store_sized_value(temp_reg, slot_dest, slot_size ); |
never@2950 | 957 | } |
never@2950 | 958 | BLOCK_COMMENT("} move_typed_arg"); |
never@2950 | 959 | } |
never@2950 | 960 | |
never@2950 | 961 | // Cf. TemplateInterpreterGenerator::generate_return_entry_for and |
never@2950 | 962 | // InterpreterMacroAssembler::save_return_value |
never@2950 | 963 | void MethodHandles::move_return_value(MacroAssembler* _masm, BasicType type, |
never@2950 | 964 | Address return_slot) { |
never@2950 | 965 | BLOCK_COMMENT("move_return_value {"); |
never@2950 | 966 | // Look at the type and pull the value out of the corresponding register. |
never@2950 | 967 | if (type == T_VOID) { |
never@2950 | 968 | // nothing to do |
never@2950 | 969 | } else if (type == T_OBJECT) { |
never@2950 | 970 | __ verify_oop(O0); |
never@2950 | 971 | __ st_ptr(O0, return_slot); |
never@2950 | 972 | } else if (type == T_INT || is_subword_type(type)) { |
never@2950 | 973 | int type_size = type2aelembytes(T_INT); |
never@2950 | 974 | __ store_sized_value(O0, return_slot, type_size); |
never@2950 | 975 | } else if (type == T_LONG) { |
never@2950 | 976 | // store the value by parts |
never@2950 | 977 | // Note: We assume longs are continguous (if misaligned) on the interpreter stack. |
never@2950 | 978 | #if !defined(_LP64) && defined(COMPILER2) |
never@2950 | 979 | __ stx(G1, return_slot); |
never@2950 | 980 | #else |
never@2950 | 981 | #ifdef _LP64 |
never@2950 | 982 | __ stx(O0, return_slot); |
never@2950 | 983 | #else |
never@2950 | 984 | if (return_slot.has_disp()) { |
never@2950 | 985 | // The displacement is a constant |
never@2950 | 986 | __ st(O0, return_slot); |
never@2950 | 987 | __ st(O1, return_slot.plus_disp(Interpreter::stackElementSize)); |
never@2950 | 988 | } else { |
never@2950 | 989 | __ std(O0, return_slot); |
never@2950 | 990 | } |
never@2950 | 991 | #endif |
never@2950 | 992 | #endif |
never@2950 | 993 | } else if (type == T_FLOAT) { |
never@2950 | 994 | __ stf(FloatRegisterImpl::S, Ftos_f, return_slot); |
never@2950 | 995 | } else if (type == T_DOUBLE) { |
never@2950 | 996 | __ stf(FloatRegisterImpl::D, Ftos_f, return_slot); |
never@2950 | 997 | } else { |
never@2950 | 998 | ShouldNotReachHere(); |
never@2950 | 999 | } |
never@2950 | 1000 | BLOCK_COMMENT("} move_return_value"); |
never@2950 | 1001 | } |
twisti@1858 | 1002 | |
twisti@1858 | 1003 | #ifndef PRODUCT |
twisti@1858 | 1004 | extern "C" void print_method_handle(oop mh); |
twisti@1858 | 1005 | void trace_method_handle_stub(const char* adaptername, |
never@2868 | 1006 | oopDesc* mh, |
never@2868 | 1007 | intptr_t* saved_sp) { |
never@2950 | 1008 | bool has_mh = (strstr(adaptername, "return/") == NULL); // return adapters don't have mh |
never@2868 | 1009 | tty->print_cr("MH %s mh="INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT, adaptername, (intptr_t) mh, saved_sp); |
never@2950 | 1010 | if (has_mh) |
never@2950 | 1011 | print_method_handle(mh); |
twisti@1858 | 1012 | } |
twisti@2204 | 1013 | void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
twisti@2204 | 1014 | if (!TraceMethodHandles) return; |
twisti@2204 | 1015 | BLOCK_COMMENT("trace_method_handle {"); |
twisti@2204 | 1016 | // save: Gargs, O5_savedSP |
twisti@2204 | 1017 | __ save_frame(16); |
twisti@2204 | 1018 | __ set((intptr_t) adaptername, O0); |
twisti@2204 | 1019 | __ mov(G3_method_handle, O1); |
never@2868 | 1020 | __ mov(I5_savedSP, O2); |
twisti@2204 | 1021 | __ mov(G3_method_handle, L3); |
twisti@2204 | 1022 | __ mov(Gargs, L4); |
twisti@2204 | 1023 | __ mov(G5_method_type, L5); |
twisti@2204 | 1024 | __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
twisti@2204 | 1025 | |
twisti@2204 | 1026 | __ mov(L3, G3_method_handle); |
twisti@2204 | 1027 | __ mov(L4, Gargs); |
twisti@2204 | 1028 | __ mov(L5, G5_method_type); |
twisti@2204 | 1029 | __ restore(); |
twisti@2204 | 1030 | BLOCK_COMMENT("} trace_method_handle"); |
twisti@2204 | 1031 | } |
twisti@1858 | 1032 | #endif // PRODUCT |
twisti@1858 | 1033 | |
jrose@1862 | 1034 | // which conversion op types are implemented here? |
jrose@1862 | 1035 | int MethodHandles::adapter_conversion_ops_supported_mask() { |
jrose@2639 | 1036 | return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) |
jrose@2639 | 1037 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) |
jrose@2639 | 1038 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) |
jrose@2639 | 1039 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
jrose@2639 | 1040 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) |
never@2950 | 1041 | // OP_PRIM_TO_REF is below... |
jrose@2639 | 1042 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) |
jrose@2639 | 1043 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) |
jrose@2639 | 1044 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) |
jrose@2639 | 1045 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) |
never@2950 | 1046 | // OP_COLLECT_ARGS is below... |
never@2950 | 1047 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) |
never@2950 | 1048 | |(!UseRicochetFrames ? 0 : |
never@2950 | 1049 | java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() <= 0 ? 0 : |
never@2950 | 1050 | ((1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF) |
never@2950 | 1051 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS) |
never@2950 | 1052 | |(1<<java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS) |
never@2950 | 1053 | ) |
never@2950 | 1054 | ) |
jrose@1862 | 1055 | ); |
jrose@1862 | 1056 | } |
twisti@1858 | 1057 | |
twisti@1858 | 1058 | //------------------------------------------------------------------------------ |
twisti@1858 | 1059 | // MethodHandles::generate_method_handle_stub |
twisti@1858 | 1060 | // |
jrose@1145 | 1061 | // Generate an "entry" field for a method handle. |
jrose@1145 | 1062 | // This determines how the method handle will respond to calls. |
twisti@2436 | 1063 | void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
never@2950 | 1064 | MethodHandles::EntryKind ek_orig = ek_original_kind(ek); |
never@2950 | 1065 | |
twisti@1858 | 1066 | // Here is the register state during an interpreted call, |
twisti@1858 | 1067 | // as set up by generate_method_handle_interpreter_entry(): |
twisti@1858 | 1068 | // - G5: garbage temp (was MethodHandle.invoke methodOop, unused) |
twisti@1858 | 1069 | // - G3: receiver method handle |
twisti@1858 | 1070 | // - O5_savedSP: sender SP (must preserve) |
twisti@1858 | 1071 | |
never@2950 | 1072 | const Register O0_scratch = O0; |
twisti@2411 | 1073 | const Register O1_scratch = O1; |
twisti@2411 | 1074 | const Register O2_scratch = O2; |
twisti@2411 | 1075 | const Register O3_scratch = O3; |
never@2950 | 1076 | const Register O4_scratch = O4; |
never@2950 | 1077 | const Register G5_scratch = G5; |
twisti@2411 | 1078 | |
never@2950 | 1079 | // Often used names: |
never@2950 | 1080 | const Register O0_argslot = O0; |
never@2950 | 1081 | |
never@2950 | 1082 | // Argument registers for _raise_exception: |
twisti@2411 | 1083 | const Register O0_code = O0; |
twisti@2411 | 1084 | const Register O1_actual = O1; |
twisti@2411 | 1085 | const Register O2_required = O2; |
twisti@1858 | 1086 | |
jrose@2639 | 1087 | guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
twisti@1858 | 1088 | |
twisti@1858 | 1089 | // Some handy addresses: |
jrose@2639 | 1090 | Address G3_mh_vmtarget( G3_method_handle, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes()); |
twisti@1858 | 1091 | |
jrose@2639 | 1092 | Address G3_dmh_vmindex( G3_method_handle, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes()); |
twisti@1858 | 1093 | |
jrose@2639 | 1094 | Address G3_bmh_vmargslot( G3_method_handle, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes()); |
jrose@2639 | 1095 | Address G3_bmh_argument( G3_method_handle, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes()); |
twisti@1858 | 1096 | |
jrose@2639 | 1097 | Address G3_amh_vmargslot( G3_method_handle, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes()); |
jrose@2639 | 1098 | Address G3_amh_argument ( G3_method_handle, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes()); |
jrose@2639 | 1099 | Address G3_amh_conversion(G3_method_handle, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes()); |
twisti@1858 | 1100 | |
stefank@3391 | 1101 | const int java_mirror_offset = in_bytes(Klass::java_mirror_offset()); |
twisti@1858 | 1102 | |
twisti@1858 | 1103 | if (have_entry(ek)) { |
twisti@1858 | 1104 | __ nop(); // empty stubs make SG sick |
twisti@1858 | 1105 | return; |
twisti@1858 | 1106 | } |
twisti@1858 | 1107 | |
twisti@1858 | 1108 | address interp_entry = __ pc(); |
twisti@1858 | 1109 | |
twisti@2204 | 1110 | trace_method_handle(_masm, entry_name(ek)); |
twisti@1858 | 1111 | |
never@2950 | 1112 | BLOCK_COMMENT(err_msg("Entry %s {", entry_name(ek))); |
never@2950 | 1113 | |
twisti@1858 | 1114 | switch ((int) ek) { |
twisti@1858 | 1115 | case _raise_exception: |
twisti@1858 | 1116 | { |
twisti@1858 | 1117 | // Not a real MH entry, but rather shared code for raising an |
never@3005 | 1118 | // exception. For sharing purposes the arguments are passed into registers |
never@3005 | 1119 | // and then placed in the intepreter calling convention here. |
twisti@2436 | 1120 | assert(raise_exception_method(), "must be set"); |
twisti@2603 | 1121 | assert(raise_exception_method()->from_compiled_entry(), "method must be linked"); |
twisti@1858 | 1122 | |
twisti@1858 | 1123 | __ set(AddressLiteral((address) &_raise_exception_method), G5_method); |
twisti@1858 | 1124 | __ ld_ptr(Address(G5_method, 0), G5_method); |
twisti@1858 | 1125 | |
twisti@2411 | 1126 | const int jobject_oop_offset = 0; |
twisti@1858 | 1127 | __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method); |
twisti@1858 | 1128 | |
never@3005 | 1129 | adjust_SP_and_Gargs_down_by_slots(_masm, 3, noreg, noreg); |
never@3005 | 1130 | |
never@3046 | 1131 | __ st (O0_code, __ argument_address(constant(2), noreg, 0)); |
never@3005 | 1132 | __ st_ptr(O1_actual, __ argument_address(constant(1), noreg, 0)); |
never@3005 | 1133 | __ st_ptr(O2_required, __ argument_address(constant(0), noreg, 0)); |
never@3005 | 1134 | jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch); |
twisti@1858 | 1135 | } |
twisti@1858 | 1136 | break; |
twisti@1858 | 1137 | |
twisti@1858 | 1138 | case _invokestatic_mh: |
twisti@1858 | 1139 | case _invokespecial_mh: |
twisti@1858 | 1140 | { |
twisti@2201 | 1141 | __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
twisti@1858 | 1142 | // Same as TemplateTable::invokestatic or invokespecial, |
twisti@1858 | 1143 | // minus the CP setup and profiling: |
twisti@1858 | 1144 | if (ek == _invokespecial_mh) { |
twisti@1858 | 1145 | // Must load & check the first argument before entering the target method. |
twisti@1858 | 1146 | __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); |
never@2950 | 1147 | __ ld_ptr(__ argument_address(O0_argslot, O0_argslot, -1), G3_method_handle); |
twisti@1858 | 1148 | __ null_check(G3_method_handle); |
twisti@1858 | 1149 | __ verify_oop(G3_method_handle); |
twisti@1858 | 1150 | } |
never@3005 | 1151 | jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch); |
twisti@1858 | 1152 | } |
twisti@1858 | 1153 | break; |
twisti@1858 | 1154 | |
twisti@1858 | 1155 | case _invokevirtual_mh: |
twisti@1858 | 1156 | { |
twisti@1858 | 1157 | // Same as TemplateTable::invokevirtual, |
twisti@1858 | 1158 | // minus the CP setup and profiling: |
twisti@1858 | 1159 | |
twisti@1858 | 1160 | // Pick out the vtable index and receiver offset from the MH, |
twisti@1858 | 1161 | // and then we can discard it: |
never@2950 | 1162 | Register O2_index = O2_scratch; |
twisti@1858 | 1163 | __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); |
never@2950 | 1164 | __ ldsw(G3_dmh_vmindex, O2_index); |
twisti@1858 | 1165 | // Note: The verifier allows us to ignore G3_mh_vmtarget. |
never@2950 | 1166 | __ ld_ptr(__ argument_address(O0_argslot, O0_argslot, -1), G3_method_handle); |
twisti@1858 | 1167 | __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); |
twisti@1858 | 1168 | |
twisti@1858 | 1169 | // Get receiver klass: |
twisti@1858 | 1170 | Register O0_klass = O0_argslot; |
twisti@1858 | 1171 | __ load_klass(G3_method_handle, O0_klass); |
twisti@1858 | 1172 | __ verify_oop(O0_klass); |
twisti@1858 | 1173 | |
twisti@1858 | 1174 | // Get target methodOop & entry point: |
twisti@1858 | 1175 | const int base = instanceKlass::vtable_start_offset() * wordSize; |
twisti@1858 | 1176 | assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); |
twisti@1858 | 1177 | |
never@2950 | 1178 | __ sll_ptr(O2_index, LogBytesPerWord, O2_index); |
never@2950 | 1179 | __ add(O0_klass, O2_index, O0_klass); |
twisti@1858 | 1180 | Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes()); |
twisti@1858 | 1181 | __ ld_ptr(vtable_entry_addr, G5_method); |
twisti@1858 | 1182 | |
never@3005 | 1183 | jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch); |
twisti@1858 | 1184 | } |
twisti@1858 | 1185 | break; |
twisti@1858 | 1186 | |
twisti@1858 | 1187 | case _invokeinterface_mh: |
twisti@1858 | 1188 | { |
twisti@1858 | 1189 | // Same as TemplateTable::invokeinterface, |
twisti@1858 | 1190 | // minus the CP setup and profiling: |
twisti@1858 | 1191 | __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); |
twisti@1858 | 1192 | Register O1_intf = O1_scratch; |
never@2950 | 1193 | Register G5_index = G5_scratch; |
twisti@2201 | 1194 | __ load_heap_oop(G3_mh_vmtarget, O1_intf); |
twisti@1858 | 1195 | __ ldsw(G3_dmh_vmindex, G5_index); |
never@2950 | 1196 | __ ld_ptr(__ argument_address(O0_argslot, O0_argslot, -1), G3_method_handle); |
twisti@1858 | 1197 | __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); |
twisti@1858 | 1198 | |
twisti@1858 | 1199 | // Get receiver klass: |
twisti@1858 | 1200 | Register O0_klass = O0_argslot; |
twisti@1858 | 1201 | __ load_klass(G3_method_handle, O0_klass); |
twisti@1858 | 1202 | __ verify_oop(O0_klass); |
twisti@1858 | 1203 | |
twisti@1858 | 1204 | // Get interface: |
twisti@1858 | 1205 | Label no_such_interface; |
twisti@1858 | 1206 | __ verify_oop(O1_intf); |
twisti@1858 | 1207 | __ lookup_interface_method(O0_klass, O1_intf, |
twisti@1858 | 1208 | // Note: next two args must be the same: |
twisti@1858 | 1209 | G5_index, G5_method, |
twisti@1858 | 1210 | O2_scratch, |
twisti@1858 | 1211 | O3_scratch, |
twisti@1858 | 1212 | no_such_interface); |
twisti@1858 | 1213 | |
never@3005 | 1214 | jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch); |
twisti@1858 | 1215 | |
twisti@1858 | 1216 | __ bind(no_such_interface); |
twisti@1858 | 1217 | // Throw an exception. |
twisti@1858 | 1218 | // For historical reasons, it will be IncompatibleClassChangeError. |
twisti@1858 | 1219 | __ unimplemented("not tested yet"); |
twisti@2411 | 1220 | __ ld_ptr(Address(O1_intf, java_mirror_offset), O2_required); // required interface |
twisti@2411 | 1221 | __ mov( O0_klass, O1_actual); // bad receiver |
twisti@2411 | 1222 | __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
twisti@2411 | 1223 | __ delayed()->mov(Bytecodes::_invokeinterface, O0_code); // who is complaining? |
twisti@1858 | 1224 | } |
twisti@1858 | 1225 | break; |
twisti@1858 | 1226 | |
twisti@1858 | 1227 | case _bound_ref_mh: |
twisti@1858 | 1228 | case _bound_int_mh: |
twisti@1858 | 1229 | case _bound_long_mh: |
twisti@1858 | 1230 | case _bound_ref_direct_mh: |
twisti@1858 | 1231 | case _bound_int_direct_mh: |
twisti@1858 | 1232 | case _bound_long_direct_mh: |
twisti@1858 | 1233 | { |
twisti@1858 | 1234 | const bool direct_to_method = (ek >= _bound_ref_direct_mh); |
never@2950 | 1235 | BasicType arg_type = ek_bound_mh_arg_type(ek); |
never@2950 | 1236 | int arg_slots = type2size[arg_type]; |
twisti@1858 | 1237 | |
twisti@1858 | 1238 | // Make room for the new argument: |
never@2950 | 1239 | load_vmargslot(_masm, G3_bmh_vmargslot, O0_argslot); |
never@2950 | 1240 | __ add(__ argument_address(O0_argslot, O0_argslot), O0_argslot); |
twisti@1858 | 1241 | |
never@2950 | 1242 | insert_arg_slots(_masm, arg_slots * stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
twisti@1858 | 1243 | |
twisti@1858 | 1244 | // Store bound argument into the new stack slot: |
twisti@2201 | 1245 | __ load_heap_oop(G3_bmh_argument, O1_scratch); |
twisti@1858 | 1246 | if (arg_type == T_OBJECT) { |
twisti@1858 | 1247 | __ st_ptr(O1_scratch, Address(O0_argslot, 0)); |
twisti@1858 | 1248 | } else { |
twisti@1858 | 1249 | Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
never@2950 | 1250 | move_typed_arg(_masm, arg_type, false, |
never@2950 | 1251 | prim_value_addr, |
never@2950 | 1252 | Address(O0_argslot, 0), |
never@2950 | 1253 | O2_scratch); // must be an even register for !_LP64 long moves (uses O2/O3) |
twisti@1858 | 1254 | } |
twisti@1858 | 1255 | |
twisti@1858 | 1256 | if (direct_to_method) { |
twisti@2201 | 1257 | __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
never@3005 | 1258 | jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch); |
twisti@1858 | 1259 | } else { |
twisti@2201 | 1260 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop |
twisti@1858 | 1261 | __ verify_oop(G3_method_handle); |
twisti@1858 | 1262 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1263 | } |
twisti@1858 | 1264 | } |
twisti@1858 | 1265 | break; |
twisti@1858 | 1266 | |
never@3105 | 1267 | case _adapter_opt_profiling: |
never@3105 | 1268 | if (java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes() != 0) { |
never@3105 | 1269 | Address G3_mh_vmcount(G3_method_handle, java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes()); |
never@3105 | 1270 | __ ld(G3_mh_vmcount, O1_scratch); |
never@3105 | 1271 | __ add(O1_scratch, 1, O1_scratch); |
never@3105 | 1272 | __ st(O1_scratch, G3_mh_vmcount); |
never@3105 | 1273 | } |
never@3105 | 1274 | // fall through |
never@3105 | 1275 | |
twisti@1858 | 1276 | case _adapter_retype_only: |
twisti@1858 | 1277 | case _adapter_retype_raw: |
twisti@1858 | 1278 | // Immediately jump to the next MH layer: |
twisti@2201 | 1279 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
never@2950 | 1280 | __ verify_oop(G3_method_handle); |
twisti@1858 | 1281 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1282 | // This is OK when all parameter types widen. |
twisti@1858 | 1283 | // It is also OK when a return type narrows. |
twisti@1858 | 1284 | break; |
twisti@1858 | 1285 | |
twisti@1858 | 1286 | case _adapter_check_cast: |
twisti@1858 | 1287 | { |
twisti@1858 | 1288 | // Check a reference argument before jumping to the next layer of MH: |
never@2950 | 1289 | load_vmargslot(_masm, G3_amh_vmargslot, O0_argslot); |
never@2950 | 1290 | Address vmarg = __ argument_address(O0_argslot, O0_argslot); |
twisti@1858 | 1291 | |
twisti@1858 | 1292 | // What class are we casting to? |
never@2950 | 1293 | Register O1_klass = O1_scratch; // Interesting AMH data. |
never@2950 | 1294 | __ load_heap_oop(G3_amh_argument, O1_klass); // This is a Class object! |
never@2950 | 1295 | load_klass_from_Class(_masm, O1_klass, O2_scratch, O3_scratch); |
twisti@1858 | 1296 | |
never@2950 | 1297 | Label L_done; |
never@2950 | 1298 | __ ld_ptr(vmarg, O2_scratch); |
kvn@3037 | 1299 | __ br_null_short(O2_scratch, Assembler::pn, L_done); // No cast if null. |
never@2950 | 1300 | __ load_klass(O2_scratch, O2_scratch); |
twisti@1858 | 1301 | |
twisti@1858 | 1302 | // Live at this point: |
twisti@2874 | 1303 | // - O0_argslot : argslot index in vmarg; may be required in the failing path |
never@2950 | 1304 | // - O1_klass : klass required by the target method |
never@2950 | 1305 | // - O2_scratch : argument klass to test |
twisti@1858 | 1306 | // - G3_method_handle: adapter method handle |
never@2950 | 1307 | __ check_klass_subtype(O2_scratch, O1_klass, O3_scratch, O4_scratch, L_done); |
twisti@1858 | 1308 | |
twisti@1858 | 1309 | // If we get here, the type check failed! |
twisti@2411 | 1310 | __ load_heap_oop(G3_amh_argument, O2_required); // required class |
twisti@2411 | 1311 | __ ld_ptr( vmarg, O1_actual); // bad object |
twisti@2411 | 1312 | __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
twisti@2411 | 1313 | __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining? |
twisti@1858 | 1314 | |
never@2950 | 1315 | __ BIND(L_done); |
twisti@1858 | 1316 | // Get the new MH: |
twisti@2201 | 1317 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
twisti@1858 | 1318 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1319 | } |
twisti@1858 | 1320 | break; |
twisti@1858 | 1321 | |
twisti@1858 | 1322 | case _adapter_prim_to_prim: |
twisti@1858 | 1323 | case _adapter_ref_to_prim: |
twisti@1858 | 1324 | // Handled completely by optimized cases. |
twisti@1858 | 1325 | __ stop("init_AdapterMethodHandle should not issue this"); |
twisti@1858 | 1326 | break; |
twisti@1858 | 1327 | |
twisti@1858 | 1328 | case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim |
twisti@1858 | 1329 | //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim |
twisti@1858 | 1330 | case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim |
twisti@1858 | 1331 | case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim |
twisti@1858 | 1332 | { |
twisti@1858 | 1333 | // Perform an in-place conversion to int or an int subword. |
never@2950 | 1334 | load_vmargslot(_masm, G3_amh_vmargslot, O0_argslot); |
twisti@2351 | 1335 | Address value; |
never@2950 | 1336 | Address vmarg; |
twisti@1858 | 1337 | bool value_left_justified = false; |
twisti@1858 | 1338 | |
twisti@1858 | 1339 | switch (ek) { |
twisti@1858 | 1340 | case _adapter_opt_i2i: |
never@2950 | 1341 | value = vmarg = __ argument_address(O0_argslot, O0_argslot); |
twisti@2256 | 1342 | break; |
twisti@1858 | 1343 | case _adapter_opt_l2i: |
twisti@2256 | 1344 | { |
twisti@2256 | 1345 | // just delete the extra slot |
twisti@2351 | 1346 | #ifdef _LP64 |
twisti@2351 | 1347 | // In V9, longs are given 2 64-bit slots in the interpreter, but the |
twisti@2351 | 1348 | // data is passed in only 1 slot. |
twisti@2351 | 1349 | // Keep the second slot. |
never@2950 | 1350 | __ add(__ argument_address(O0_argslot, O0_argslot, -1), O0_argslot); |
twisti@2351 | 1351 | remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
twisti@2351 | 1352 | value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value. |
twisti@2351 | 1353 | vmarg = Address(O0_argslot, Interpreter::stackElementSize); |
twisti@2351 | 1354 | #else |
twisti@2351 | 1355 | // Keep the first slot. |
never@2950 | 1356 | __ add(__ argument_address(O0_argslot, O0_argslot), O0_argslot); |
twisti@2256 | 1357 | remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
twisti@2351 | 1358 | value = Address(O0_argslot, 0); |
twisti@2351 | 1359 | vmarg = value; |
twisti@2351 | 1360 | #endif |
twisti@2256 | 1361 | } |
twisti@1858 | 1362 | break; |
twisti@1858 | 1363 | case _adapter_opt_unboxi: |
twisti@1858 | 1364 | { |
never@2950 | 1365 | vmarg = __ argument_address(O0_argslot, O0_argslot); |
twisti@1858 | 1366 | // Load the value up from the heap. |
twisti@1858 | 1367 | __ ld_ptr(vmarg, O1_scratch); |
twisti@1858 | 1368 | int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); |
twisti@1858 | 1369 | #ifdef ASSERT |
twisti@1858 | 1370 | for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
twisti@1858 | 1371 | if (is_subword_type(BasicType(bt))) |
twisti@1858 | 1372 | assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); |
twisti@1858 | 1373 | } |
twisti@1858 | 1374 | #endif |
twisti@1858 | 1375 | __ null_check(O1_scratch, value_offset); |
twisti@1858 | 1376 | value = Address(O1_scratch, value_offset); |
twisti@1858 | 1377 | #ifdef _BIG_ENDIAN |
twisti@1858 | 1378 | // Values stored in objects are packed. |
twisti@1858 | 1379 | value_left_justified = true; |
twisti@1858 | 1380 | #endif |
twisti@1858 | 1381 | } |
twisti@1858 | 1382 | break; |
twisti@1858 | 1383 | default: |
twisti@1858 | 1384 | ShouldNotReachHere(); |
twisti@1858 | 1385 | } |
twisti@1858 | 1386 | |
twisti@1858 | 1387 | // This check is required on _BIG_ENDIAN |
never@2950 | 1388 | Register G5_vminfo = G5_scratch; |
twisti@1858 | 1389 | __ ldsw(G3_amh_conversion, G5_vminfo); |
twisti@1858 | 1390 | assert(CONV_VMINFO_SHIFT == 0, "preshifted"); |
twisti@1858 | 1391 | |
twisti@1858 | 1392 | // Original 32-bit vmdata word must be of this form: |
twisti@1858 | 1393 | // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
twisti@1858 | 1394 | __ lduw(value, O1_scratch); |
twisti@1858 | 1395 | if (!value_left_justified) |
twisti@1858 | 1396 | __ sll(O1_scratch, G5_vminfo, O1_scratch); |
twisti@1858 | 1397 | Label zero_extend, done; |
twisti@1858 | 1398 | __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo); |
twisti@1858 | 1399 | __ br(Assembler::zero, false, Assembler::pn, zero_extend); |
twisti@1858 | 1400 | __ delayed()->nop(); |
twisti@1858 | 1401 | |
twisti@1858 | 1402 | // this path is taken for int->byte, int->short |
twisti@1858 | 1403 | __ sra(O1_scratch, G5_vminfo, O1_scratch); |
kvn@3037 | 1404 | __ ba_short(done); |
twisti@1858 | 1405 | |
twisti@1858 | 1406 | __ bind(zero_extend); |
twisti@1858 | 1407 | // this is taken for int->char |
twisti@1858 | 1408 | __ srl(O1_scratch, G5_vminfo, O1_scratch); |
twisti@1858 | 1409 | |
twisti@1858 | 1410 | __ bind(done); |
twisti@1858 | 1411 | __ st(O1_scratch, vmarg); |
twisti@1858 | 1412 | |
twisti@1858 | 1413 | // Get the new MH: |
twisti@2201 | 1414 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
twisti@1858 | 1415 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1416 | } |
twisti@1858 | 1417 | break; |
twisti@1858 | 1418 | |
twisti@1858 | 1419 | case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim |
twisti@1858 | 1420 | case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim |
twisti@1858 | 1421 | { |
twisti@1858 | 1422 | // Perform an in-place int-to-long or ref-to-long conversion. |
never@2950 | 1423 | load_vmargslot(_masm, G3_amh_vmargslot, O0_argslot); |
twisti@1858 | 1424 | |
twisti@1858 | 1425 | // On big-endian machine we duplicate the slot and store the MSW |
twisti@1858 | 1426 | // in the first slot. |
never@2950 | 1427 | __ add(__ argument_address(O0_argslot, O0_argslot, 1), O0_argslot); |
twisti@1858 | 1428 | |
never@2950 | 1429 | insert_arg_slots(_masm, stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
twisti@1858 | 1430 | |
twisti@1858 | 1431 | Address arg_lsw(O0_argslot, 0); |
twisti@1861 | 1432 | Address arg_msw(O0_argslot, -Interpreter::stackElementSize); |
twisti@1858 | 1433 | |
twisti@1858 | 1434 | switch (ek) { |
twisti@1858 | 1435 | case _adapter_opt_i2l: |
twisti@1858 | 1436 | { |
twisti@2664 | 1437 | #ifdef _LP64 |
twisti@2664 | 1438 | __ ldsw(arg_lsw, O2_scratch); // Load LSW sign-extended |
twisti@2664 | 1439 | #else |
twisti@2664 | 1440 | __ ldsw(arg_lsw, O3_scratch); // Load LSW sign-extended |
twisti@2664 | 1441 | __ srlx(O3_scratch, BitsPerInt, O2_scratch); // Move MSW value to lower 32-bits for std |
twisti@2664 | 1442 | #endif |
twisti@2664 | 1443 | __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64 |
twisti@1858 | 1444 | } |
twisti@1858 | 1445 | break; |
twisti@1858 | 1446 | case _adapter_opt_unboxl: |
twisti@1858 | 1447 | { |
twisti@1858 | 1448 | // Load the value up from the heap. |
twisti@1858 | 1449 | __ ld_ptr(arg_lsw, O1_scratch); |
twisti@1858 | 1450 | int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); |
twisti@1858 | 1451 | assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); |
twisti@1858 | 1452 | __ null_check(O1_scratch, value_offset); |
twisti@1858 | 1453 | __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64 |
twisti@1858 | 1454 | __ st_long(O2_scratch, arg_msw); |
twisti@1858 | 1455 | } |
twisti@1858 | 1456 | break; |
twisti@1858 | 1457 | default: |
twisti@1858 | 1458 | ShouldNotReachHere(); |
twisti@1858 | 1459 | } |
twisti@1858 | 1460 | |
twisti@2201 | 1461 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
twisti@1858 | 1462 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1463 | } |
twisti@1858 | 1464 | break; |
twisti@1858 | 1465 | |
twisti@1858 | 1466 | case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim |
twisti@1858 | 1467 | case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim |
twisti@1858 | 1468 | { |
twisti@1858 | 1469 | // perform an in-place floating primitive conversion |
twisti@1858 | 1470 | __ unimplemented(entry_name(ek)); |
twisti@1858 | 1471 | } |
twisti@1858 | 1472 | break; |
twisti@1858 | 1473 | |
twisti@1858 | 1474 | case _adapter_prim_to_ref: |
twisti@1858 | 1475 | __ unimplemented(entry_name(ek)); // %%% FIXME: NYI |
twisti@1858 | 1476 | break; |
twisti@1858 | 1477 | |
twisti@1858 | 1478 | case _adapter_swap_args: |
twisti@1858 | 1479 | case _adapter_rot_args: |
twisti@1858 | 1480 | // handled completely by optimized cases |
twisti@1858 | 1481 | __ stop("init_AdapterMethodHandle should not issue this"); |
twisti@1858 | 1482 | break; |
twisti@1858 | 1483 | |
twisti@1858 | 1484 | case _adapter_opt_swap_1: |
twisti@1858 | 1485 | case _adapter_opt_swap_2: |
twisti@1858 | 1486 | case _adapter_opt_rot_1_up: |
twisti@1858 | 1487 | case _adapter_opt_rot_1_down: |
twisti@1858 | 1488 | case _adapter_opt_rot_2_up: |
twisti@1858 | 1489 | case _adapter_opt_rot_2_down: |
twisti@1858 | 1490 | { |
never@2950 | 1491 | int swap_slots = ek_adapter_opt_swap_slots(ek); |
never@2950 | 1492 | int rotate = ek_adapter_opt_swap_mode(ek); |
twisti@1858 | 1493 | |
twisti@1858 | 1494 | // 'argslot' is the position of the first argument to swap. |
never@2950 | 1495 | load_vmargslot(_masm, G3_amh_vmargslot, O0_argslot); |
never@2950 | 1496 | __ add(__ argument_address(O0_argslot, O0_argslot), O0_argslot); |
never@2950 | 1497 | if (VerifyMethodHandles) |
never@2950 | 1498 | verify_argslot(_masm, O0_argslot, O2_scratch, "swap point must fall within current frame"); |
twisti@1858 | 1499 | |
twisti@1858 | 1500 | // 'vminfo' is the second. |
twisti@1858 | 1501 | Register O1_destslot = O1_scratch; |
never@2950 | 1502 | load_conversion_vminfo(_masm, G3_amh_conversion, O1_destslot); |
never@2950 | 1503 | __ add(__ argument_address(O1_destslot, O1_destslot), O1_destslot); |
never@2950 | 1504 | if (VerifyMethodHandles) |
never@2950 | 1505 | verify_argslot(_masm, O1_destslot, O2_scratch, "swap point must fall within current frame"); |
twisti@1858 | 1506 | |
never@2950 | 1507 | assert(Interpreter::stackElementSize == wordSize, "else rethink use of wordSize here"); |
twisti@1858 | 1508 | if (!rotate) { |
never@2950 | 1509 | // simple swap |
never@2950 | 1510 | for (int i = 0; i < swap_slots; i++) { |
never@2950 | 1511 | __ ld_ptr( Address(O0_argslot, i * wordSize), O2_scratch); |
never@2950 | 1512 | __ ld_ptr( Address(O1_destslot, i * wordSize), O3_scratch); |
never@2950 | 1513 | __ st_ptr(O3_scratch, Address(O0_argslot, i * wordSize)); |
never@2950 | 1514 | __ st_ptr(O2_scratch, Address(O1_destslot, i * wordSize)); |
twisti@1858 | 1515 | } |
twisti@1858 | 1516 | } else { |
never@2950 | 1517 | // A rotate is actually pair of moves, with an "odd slot" (or pair) |
never@2950 | 1518 | // changing place with a series of other slots. |
never@2950 | 1519 | // First, push the "odd slot", which is going to get overwritten |
never@2950 | 1520 | switch (swap_slots) { |
never@2950 | 1521 | case 2 : __ ld_ptr(Address(O0_argslot, 1 * wordSize), O4_scratch); // fall-thru |
never@2950 | 1522 | case 1 : __ ld_ptr(Address(O0_argslot, 0 * wordSize), O3_scratch); break; |
never@2950 | 1523 | default: ShouldNotReachHere(); |
twisti@1858 | 1524 | } |
twisti@1858 | 1525 | if (rotate > 0) { |
never@2950 | 1526 | // Here is rotate > 0: |
never@2950 | 1527 | // (low mem) (high mem) |
never@2950 | 1528 | // | dest: more_slots... | arg: odd_slot :arg+1 | |
never@2950 | 1529 | // => |
never@2950 | 1530 | // | dest: odd_slot | dest+1: more_slots... :arg+1 | |
never@2950 | 1531 | // work argslot down to destslot, copying contiguous data upwards |
never@2950 | 1532 | // pseudo-code: |
twisti@1858 | 1533 | // argslot = src_addr - swap_bytes |
twisti@1858 | 1534 | // destslot = dest_addr |
never@2950 | 1535 | // while (argslot >= destslot) *(argslot + swap_bytes) = *(argslot + 0), argslot--; |
never@2950 | 1536 | move_arg_slots_up(_masm, |
never@2950 | 1537 | O1_destslot, |
never@2950 | 1538 | Address(O0_argslot, 0), |
never@2950 | 1539 | swap_slots, |
never@2950 | 1540 | O0_argslot, O2_scratch); |
twisti@1858 | 1541 | } else { |
never@2950 | 1542 | // Here is the other direction, rotate < 0: |
never@2950 | 1543 | // (low mem) (high mem) |
never@2950 | 1544 | // | arg: odd_slot | arg+1: more_slots... :dest+1 | |
never@2950 | 1545 | // => |
never@2950 | 1546 | // | arg: more_slots... | dest: odd_slot :dest+1 | |
never@2950 | 1547 | // work argslot up to destslot, copying contiguous data downwards |
never@2950 | 1548 | // pseudo-code: |
twisti@1858 | 1549 | // argslot = src_addr + swap_bytes |
twisti@1858 | 1550 | // destslot = dest_addr |
never@2950 | 1551 | // while (argslot <= destslot) *(argslot - swap_bytes) = *(argslot + 0), argslot++; |
never@2954 | 1552 | // dest_slot denotes an exclusive upper limit |
never@2954 | 1553 | int limit_bias = OP_ROT_ARGS_DOWN_LIMIT_BIAS; |
never@2954 | 1554 | if (limit_bias != 0) |
never@2954 | 1555 | __ add(O1_destslot, - limit_bias * wordSize, O1_destslot); |
never@2950 | 1556 | move_arg_slots_down(_masm, |
never@2950 | 1557 | Address(O0_argslot, swap_slots * wordSize), |
never@2950 | 1558 | O1_destslot, |
never@2950 | 1559 | -swap_slots, |
never@2950 | 1560 | O0_argslot, O2_scratch); |
never@2950 | 1561 | |
never@2954 | 1562 | __ sub(O1_destslot, swap_slots * wordSize, O1_destslot); |
twisti@1858 | 1563 | } |
never@2950 | 1564 | // pop the original first chunk into the destination slot, now free |
never@2950 | 1565 | switch (swap_slots) { |
never@2950 | 1566 | case 2 : __ st_ptr(O4_scratch, Address(O1_destslot, 1 * wordSize)); // fall-thru |
never@2950 | 1567 | case 1 : __ st_ptr(O3_scratch, Address(O1_destslot, 0 * wordSize)); break; |
never@2950 | 1568 | default: ShouldNotReachHere(); |
twisti@1858 | 1569 | } |
twisti@1858 | 1570 | } |
twisti@1858 | 1571 | |
twisti@2201 | 1572 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
twisti@1858 | 1573 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1574 | } |
twisti@1858 | 1575 | break; |
twisti@1858 | 1576 | |
twisti@1858 | 1577 | case _adapter_dup_args: |
twisti@1858 | 1578 | { |
twisti@1858 | 1579 | // 'argslot' is the position of the first argument to duplicate. |
never@2950 | 1580 | load_vmargslot(_masm, G3_amh_vmargslot, O0_argslot); |
never@2950 | 1581 | __ add(__ argument_address(O0_argslot, O0_argslot), O0_argslot); |
twisti@1858 | 1582 | |
twisti@1858 | 1583 | // 'stack_move' is negative number of words to duplicate. |
never@2950 | 1584 | Register O1_stack_move = O1_scratch; |
never@2950 | 1585 | load_stack_move(_masm, G3_amh_conversion, O1_stack_move); |
twisti@1858 | 1586 | |
never@2950 | 1587 | if (VerifyMethodHandles) { |
never@2950 | 1588 | verify_argslots(_masm, O1_stack_move, O0_argslot, O2_scratch, O3_scratch, true, |
never@2950 | 1589 | "copied argument(s) must fall within current frame"); |
never@2950 | 1590 | } |
twisti@1858 | 1591 | |
never@2950 | 1592 | // insert location is always the bottom of the argument list: |
never@2950 | 1593 | __ neg(O1_stack_move); |
never@2950 | 1594 | push_arg_slots(_masm, O0_argslot, O1_stack_move, O2_scratch, O3_scratch); |
twisti@1858 | 1595 | |
twisti@2201 | 1596 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
twisti@1858 | 1597 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1598 | } |
twisti@1858 | 1599 | break; |
twisti@1858 | 1600 | |
twisti@1858 | 1601 | case _adapter_drop_args: |
twisti@1858 | 1602 | { |
twisti@1858 | 1603 | // 'argslot' is the position of the first argument to nuke. |
never@2950 | 1604 | load_vmargslot(_masm, G3_amh_vmargslot, O0_argslot); |
never@2950 | 1605 | __ add(__ argument_address(O0_argslot, O0_argslot), O0_argslot); |
twisti@1858 | 1606 | |
twisti@1858 | 1607 | // 'stack_move' is number of words to drop. |
never@2950 | 1608 | Register O1_stack_move = O1_scratch; |
never@2950 | 1609 | load_stack_move(_masm, G3_amh_conversion, O1_stack_move); |
twisti@1858 | 1610 | |
never@2950 | 1611 | remove_arg_slots(_masm, O1_stack_move, O0_argslot, O2_scratch, O3_scratch, O4_scratch); |
twisti@1858 | 1612 | |
twisti@2201 | 1613 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
twisti@1858 | 1614 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 1615 | } |
twisti@1858 | 1616 | break; |
twisti@1858 | 1617 | |
twisti@1858 | 1618 | case _adapter_collect_args: |
never@2950 | 1619 | case _adapter_fold_args: |
twisti@1858 | 1620 | case _adapter_spread_args: |
twisti@1858 | 1621 | // Handled completely by optimized cases. |
twisti@1858 | 1622 | __ stop("init_AdapterMethodHandle should not issue this"); |
twisti@1858 | 1623 | break; |
twisti@1858 | 1624 | |
never@2950 | 1625 | case _adapter_opt_collect_ref: |
never@2950 | 1626 | case _adapter_opt_collect_int: |
never@2950 | 1627 | case _adapter_opt_collect_long: |
never@2950 | 1628 | case _adapter_opt_collect_float: |
never@2950 | 1629 | case _adapter_opt_collect_double: |
never@2950 | 1630 | case _adapter_opt_collect_void: |
never@2950 | 1631 | case _adapter_opt_collect_0_ref: |
never@2950 | 1632 | case _adapter_opt_collect_1_ref: |
never@2950 | 1633 | case _adapter_opt_collect_2_ref: |
never@2950 | 1634 | case _adapter_opt_collect_3_ref: |
never@2950 | 1635 | case _adapter_opt_collect_4_ref: |
never@2950 | 1636 | case _adapter_opt_collect_5_ref: |
never@2950 | 1637 | case _adapter_opt_filter_S0_ref: |
never@2950 | 1638 | case _adapter_opt_filter_S1_ref: |
never@2950 | 1639 | case _adapter_opt_filter_S2_ref: |
never@2950 | 1640 | case _adapter_opt_filter_S3_ref: |
never@2950 | 1641 | case _adapter_opt_filter_S4_ref: |
never@2950 | 1642 | case _adapter_opt_filter_S5_ref: |
never@2950 | 1643 | case _adapter_opt_collect_2_S0_ref: |
never@2950 | 1644 | case _adapter_opt_collect_2_S1_ref: |
never@2950 | 1645 | case _adapter_opt_collect_2_S2_ref: |
never@2950 | 1646 | case _adapter_opt_collect_2_S3_ref: |
never@2950 | 1647 | case _adapter_opt_collect_2_S4_ref: |
never@2950 | 1648 | case _adapter_opt_collect_2_S5_ref: |
never@2950 | 1649 | case _adapter_opt_fold_ref: |
never@2950 | 1650 | case _adapter_opt_fold_int: |
never@2950 | 1651 | case _adapter_opt_fold_long: |
never@2950 | 1652 | case _adapter_opt_fold_float: |
never@2950 | 1653 | case _adapter_opt_fold_double: |
never@2950 | 1654 | case _adapter_opt_fold_void: |
never@2950 | 1655 | case _adapter_opt_fold_1_ref: |
never@2950 | 1656 | case _adapter_opt_fold_2_ref: |
never@2950 | 1657 | case _adapter_opt_fold_3_ref: |
never@2950 | 1658 | case _adapter_opt_fold_4_ref: |
never@2950 | 1659 | case _adapter_opt_fold_5_ref: |
twisti@1858 | 1660 | { |
never@2950 | 1661 | // Given a fresh incoming stack frame, build a new ricochet frame. |
never@2950 | 1662 | // On entry, TOS points at a return PC, and FP is the callers frame ptr. |
never@2950 | 1663 | // RSI/R13 has the caller's exact stack pointer, which we must also preserve. |
never@2950 | 1664 | // RCX contains an AdapterMethodHandle of the indicated kind. |
never@2950 | 1665 | |
never@2950 | 1666 | // Relevant AMH fields: |
never@2950 | 1667 | // amh.vmargslot: |
never@2950 | 1668 | // points to the trailing edge of the arguments |
never@2950 | 1669 | // to filter, collect, or fold. For a boxing operation, |
never@2950 | 1670 | // it points just after the single primitive value. |
never@2950 | 1671 | // amh.argument: |
never@2950 | 1672 | // recursively called MH, on |collect| arguments |
never@2950 | 1673 | // amh.vmtarget: |
never@2950 | 1674 | // final destination MH, on return value, etc. |
never@2950 | 1675 | // amh.conversion.dest: |
never@2950 | 1676 | // tells what is the type of the return value |
never@2950 | 1677 | // (not needed here, since dest is also derived from ek) |
never@2950 | 1678 | // amh.conversion.vminfo: |
never@2950 | 1679 | // points to the trailing edge of the return value |
never@2950 | 1680 | // when the vmtarget is to be called; this is |
never@2950 | 1681 | // equal to vmargslot + (retained ? |collect| : 0) |
never@2950 | 1682 | |
never@2950 | 1683 | // Pass 0 or more argument slots to the recursive target. |
never@2950 | 1684 | int collect_count_constant = ek_adapter_opt_collect_count(ek); |
never@2950 | 1685 | |
never@2950 | 1686 | // The collected arguments are copied from the saved argument list: |
never@2950 | 1687 | int collect_slot_constant = ek_adapter_opt_collect_slot(ek); |
never@2950 | 1688 | |
never@2950 | 1689 | assert(ek_orig == _adapter_collect_args || |
never@2950 | 1690 | ek_orig == _adapter_fold_args, ""); |
never@2950 | 1691 | bool retain_original_args = (ek_orig == _adapter_fold_args); |
never@2950 | 1692 | |
never@2950 | 1693 | // The return value is replaced (or inserted) at the 'vminfo' argslot. |
never@2950 | 1694 | // Sometimes we can compute this statically. |
never@2950 | 1695 | int dest_slot_constant = -1; |
never@2950 | 1696 | if (!retain_original_args) |
never@2950 | 1697 | dest_slot_constant = collect_slot_constant; |
never@2950 | 1698 | else if (collect_slot_constant >= 0 && collect_count_constant >= 0) |
never@2950 | 1699 | // We are preserving all the arguments, and the return value is prepended, |
never@2950 | 1700 | // so the return slot is to the left (above) the |collect| sequence. |
never@2950 | 1701 | dest_slot_constant = collect_slot_constant + collect_count_constant; |
never@2950 | 1702 | |
never@2950 | 1703 | // Replace all those slots by the result of the recursive call. |
never@2950 | 1704 | // The result type can be one of ref, int, long, float, double, void. |
never@2950 | 1705 | // In the case of void, nothing is pushed on the stack after return. |
never@2950 | 1706 | BasicType dest = ek_adapter_opt_collect_type(ek); |
never@2950 | 1707 | assert(dest == type2wfield[dest], "dest is a stack slot type"); |
never@2950 | 1708 | int dest_count = type2size[dest]; |
never@2950 | 1709 | assert(dest_count == 1 || dest_count == 2 || (dest_count == 0 && dest == T_VOID), "dest has a size"); |
never@2950 | 1710 | |
never@2950 | 1711 | // Choose a return continuation. |
never@2950 | 1712 | EntryKind ek_ret = _adapter_opt_return_any; |
never@2950 | 1713 | if (dest != T_CONFLICT && OptimizeMethodHandles) { |
never@2950 | 1714 | switch (dest) { |
never@2950 | 1715 | case T_INT : ek_ret = _adapter_opt_return_int; break; |
never@2950 | 1716 | case T_LONG : ek_ret = _adapter_opt_return_long; break; |
never@2950 | 1717 | case T_FLOAT : ek_ret = _adapter_opt_return_float; break; |
never@2950 | 1718 | case T_DOUBLE : ek_ret = _adapter_opt_return_double; break; |
never@2950 | 1719 | case T_OBJECT : ek_ret = _adapter_opt_return_ref; break; |
never@2950 | 1720 | case T_VOID : ek_ret = _adapter_opt_return_void; break; |
never@2950 | 1721 | default : ShouldNotReachHere(); |
never@2950 | 1722 | } |
never@2950 | 1723 | if (dest == T_OBJECT && dest_slot_constant >= 0) { |
never@2950 | 1724 | EntryKind ek_try = EntryKind(_adapter_opt_return_S0_ref + dest_slot_constant); |
never@2950 | 1725 | if (ek_try <= _adapter_opt_return_LAST && |
never@2950 | 1726 | ek_adapter_opt_return_slot(ek_try) == dest_slot_constant) { |
never@2950 | 1727 | ek_ret = ek_try; |
never@2950 | 1728 | } |
never@2950 | 1729 | } |
never@2950 | 1730 | assert(ek_adapter_opt_return_type(ek_ret) == dest, ""); |
never@2950 | 1731 | } |
never@2950 | 1732 | |
never@2950 | 1733 | // Already pushed: ... keep1 | collect | keep2 | |
never@2950 | 1734 | |
never@2950 | 1735 | // Push a few extra argument words, if we need them to store the return value. |
never@2950 | 1736 | { |
never@2950 | 1737 | int extra_slots = 0; |
never@2950 | 1738 | if (retain_original_args) { |
never@2950 | 1739 | extra_slots = dest_count; |
never@2950 | 1740 | } else if (collect_count_constant == -1) { |
never@2950 | 1741 | extra_slots = dest_count; // collect_count might be zero; be generous |
never@2950 | 1742 | } else if (dest_count > collect_count_constant) { |
never@2950 | 1743 | extra_slots = (dest_count - collect_count_constant); |
never@2950 | 1744 | } else { |
never@2950 | 1745 | // else we know we have enough dead space in |collect| to repurpose for return values |
never@2950 | 1746 | } |
never@2950 | 1747 | if (extra_slots != 0) { |
never@2950 | 1748 | __ sub(SP, round_to(extra_slots, 2) * Interpreter::stackElementSize, SP); |
never@2950 | 1749 | } |
never@2950 | 1750 | } |
never@2950 | 1751 | |
never@2950 | 1752 | // Set up Ricochet Frame. |
never@2950 | 1753 | __ mov(SP, O5_savedSP); // record SP for the callee |
never@2950 | 1754 | |
never@2950 | 1755 | // One extra (empty) slot for outgoing target MH (see Gargs computation below). |
never@2950 | 1756 | __ save_frame(2); // Note: we need to add 2 slots since frame::memory_parameter_word_sp_offset is 23. |
never@2950 | 1757 | |
never@2950 | 1758 | // Note: Gargs is live throughout the following, until we make our recursive call. |
never@2950 | 1759 | // And the RF saves a copy in L4_saved_args_base. |
never@2950 | 1760 | |
never@2950 | 1761 | RicochetFrame::enter_ricochet_frame(_masm, G3_method_handle, Gargs, |
never@2950 | 1762 | entry(ek_ret)->from_interpreted_entry()); |
never@2950 | 1763 | |
never@2950 | 1764 | // Compute argument base: |
never@2950 | 1765 | // Set up Gargs for current frame, extra (empty) slot is for outgoing target MH (space reserved by save_frame above). |
never@2950 | 1766 | __ add(FP, STACK_BIAS - (1 * Interpreter::stackElementSize), Gargs); |
never@2950 | 1767 | |
never@2950 | 1768 | // Now pushed: ... keep1 | collect | keep2 | extra | [RF] |
never@2950 | 1769 | |
never@2950 | 1770 | #ifdef ASSERT |
never@2950 | 1771 | if (VerifyMethodHandles && dest != T_CONFLICT) { |
never@2950 | 1772 | BLOCK_COMMENT("verify AMH.conv.dest {"); |
never@2950 | 1773 | extract_conversion_dest_type(_masm, RicochetFrame::L5_conversion, O1_scratch); |
never@2950 | 1774 | Label L_dest_ok; |
never@2950 | 1775 | __ cmp(O1_scratch, (int) dest); |
never@2950 | 1776 | __ br(Assembler::equal, false, Assembler::pt, L_dest_ok); |
never@2950 | 1777 | __ delayed()->nop(); |
never@2950 | 1778 | if (dest == T_INT) { |
never@2950 | 1779 | for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
never@2950 | 1780 | if (is_subword_type(BasicType(bt))) { |
never@2950 | 1781 | __ cmp(O1_scratch, (int) bt); |
never@2950 | 1782 | __ br(Assembler::equal, false, Assembler::pt, L_dest_ok); |
never@2950 | 1783 | __ delayed()->nop(); |
never@2950 | 1784 | } |
never@2950 | 1785 | } |
never@2950 | 1786 | } |
never@2950 | 1787 | __ stop("bad dest in AMH.conv"); |
never@2950 | 1788 | __ BIND(L_dest_ok); |
never@2950 | 1789 | BLOCK_COMMENT("} verify AMH.conv.dest"); |
never@2950 | 1790 | } |
never@2950 | 1791 | #endif //ASSERT |
never@2950 | 1792 | |
never@2950 | 1793 | // Find out where the original copy of the recursive argument sequence begins. |
never@2950 | 1794 | Register O0_coll = O0_scratch; |
never@2950 | 1795 | { |
never@2950 | 1796 | RegisterOrConstant collect_slot = collect_slot_constant; |
never@2950 | 1797 | if (collect_slot_constant == -1) { |
never@2950 | 1798 | load_vmargslot(_masm, G3_amh_vmargslot, O1_scratch); |
never@2950 | 1799 | collect_slot = O1_scratch; |
never@2950 | 1800 | } |
never@2950 | 1801 | // collect_slot might be 0, but we need the move anyway. |
never@2950 | 1802 | __ add(RicochetFrame::L4_saved_args_base, __ argument_offset(collect_slot, collect_slot.register_or_noreg()), O0_coll); |
never@2950 | 1803 | // O0_coll now points at the trailing edge of |collect| and leading edge of |keep2| |
never@2950 | 1804 | } |
never@2950 | 1805 | |
never@2950 | 1806 | // Replace the old AMH with the recursive MH. (No going back now.) |
never@2950 | 1807 | // In the case of a boxing call, the recursive call is to a 'boxer' method, |
never@2950 | 1808 | // such as Integer.valueOf or Long.valueOf. In the case of a filter |
never@2950 | 1809 | // or collect call, it will take one or more arguments, transform them, |
never@2950 | 1810 | // and return some result, to store back into argument_base[vminfo]. |
never@2950 | 1811 | __ load_heap_oop(G3_amh_argument, G3_method_handle); |
never@2950 | 1812 | if (VerifyMethodHandles) verify_method_handle(_masm, G3_method_handle, O1_scratch, O2_scratch); |
never@2950 | 1813 | |
never@2950 | 1814 | // Calculate |collect|, the number of arguments we are collecting. |
never@2950 | 1815 | Register O1_collect_count = O1_scratch; |
never@2950 | 1816 | RegisterOrConstant collect_count; |
never@2950 | 1817 | if (collect_count_constant < 0) { |
never@2950 | 1818 | __ load_method_handle_vmslots(O1_collect_count, G3_method_handle, O2_scratch); |
never@2950 | 1819 | collect_count = O1_collect_count; |
never@2950 | 1820 | } else { |
never@2950 | 1821 | collect_count = collect_count_constant; |
never@2950 | 1822 | #ifdef ASSERT |
never@2950 | 1823 | if (VerifyMethodHandles) { |
never@2950 | 1824 | BLOCK_COMMENT("verify collect_count_constant {"); |
never@2950 | 1825 | __ load_method_handle_vmslots(O3_scratch, G3_method_handle, O2_scratch); |
never@2950 | 1826 | Label L_count_ok; |
kvn@3037 | 1827 | __ cmp_and_br_short(O3_scratch, collect_count_constant, Assembler::equal, Assembler::pt, L_count_ok); |
never@2950 | 1828 | __ stop("bad vminfo in AMH.conv"); |
never@2950 | 1829 | __ BIND(L_count_ok); |
never@2950 | 1830 | BLOCK_COMMENT("} verify collect_count_constant"); |
never@2950 | 1831 | } |
never@2950 | 1832 | #endif //ASSERT |
never@2950 | 1833 | } |
never@2950 | 1834 | |
never@2950 | 1835 | // copy |collect| slots directly to TOS: |
never@2950 | 1836 | push_arg_slots(_masm, O0_coll, collect_count, O2_scratch, O3_scratch); |
never@2950 | 1837 | // Now pushed: ... keep1 | collect | keep2 | RF... | collect | |
never@2950 | 1838 | // O0_coll still points at the trailing edge of |collect| and leading edge of |keep2| |
never@2950 | 1839 | |
never@2950 | 1840 | // If necessary, adjust the saved arguments to make room for the eventual return value. |
never@2950 | 1841 | // Normal adjustment: ... keep1 | +dest+ | -collect- | keep2 | RF... | collect | |
never@2950 | 1842 | // If retaining args: ... keep1 | +dest+ | collect | keep2 | RF... | collect | |
never@2950 | 1843 | // In the non-retaining case, this might move keep2 either up or down. |
never@2950 | 1844 | // We don't have to copy the whole | RF... collect | complex, |
never@2950 | 1845 | // but we must adjust RF.saved_args_base. |
never@2950 | 1846 | // Also, from now on, we will forget about the original copy of |collect|. |
never@2950 | 1847 | // If we are retaining it, we will treat it as part of |keep2|. |
never@2950 | 1848 | // For clarity we will define |keep3| = |collect|keep2| or |keep2|. |
never@2950 | 1849 | |
never@2950 | 1850 | BLOCK_COMMENT("adjust trailing arguments {"); |
never@2950 | 1851 | // Compare the sizes of |+dest+| and |-collect-|, which are opposed opening and closing movements. |
never@2950 | 1852 | int open_count = dest_count; |
never@2950 | 1853 | RegisterOrConstant close_count = collect_count_constant; |
never@2950 | 1854 | Register O1_close_count = O1_collect_count; |
never@2950 | 1855 | if (retain_original_args) { |
never@2950 | 1856 | close_count = constant(0); |
never@2950 | 1857 | } else if (collect_count_constant == -1) { |
never@2950 | 1858 | close_count = O1_collect_count; |
never@2950 | 1859 | } |
never@2950 | 1860 | |
never@2950 | 1861 | // How many slots need moving? This is simply dest_slot (0 => no |keep3|). |
never@2950 | 1862 | RegisterOrConstant keep3_count; |
never@2950 | 1863 | Register O2_keep3_count = O2_scratch; |
never@2950 | 1864 | if (dest_slot_constant < 0) { |
never@2950 | 1865 | extract_conversion_vminfo(_masm, RicochetFrame::L5_conversion, O2_keep3_count); |
never@2950 | 1866 | keep3_count = O2_keep3_count; |
never@2950 | 1867 | } else { |
never@2950 | 1868 | keep3_count = dest_slot_constant; |
never@2950 | 1869 | #ifdef ASSERT |
never@2950 | 1870 | if (VerifyMethodHandles && dest_slot_constant < 0) { |
never@2950 | 1871 | BLOCK_COMMENT("verify dest_slot_constant {"); |
never@2950 | 1872 | extract_conversion_vminfo(_masm, RicochetFrame::L5_conversion, O3_scratch); |
never@2950 | 1873 | Label L_vminfo_ok; |
kvn@3037 | 1874 | __ cmp_and_br_short(O3_scratch, dest_slot_constant, Assembler::equal, Assembler::pt, L_vminfo_ok); |
never@2950 | 1875 | __ stop("bad vminfo in AMH.conv"); |
never@2950 | 1876 | __ BIND(L_vminfo_ok); |
never@2950 | 1877 | BLOCK_COMMENT("} verify dest_slot_constant"); |
never@2950 | 1878 | } |
never@2950 | 1879 | #endif //ASSERT |
never@2950 | 1880 | } |
never@2950 | 1881 | |
never@2950 | 1882 | // tasks remaining: |
never@2950 | 1883 | bool move_keep3 = (!keep3_count.is_constant() || keep3_count.as_constant() != 0); |
never@2950 | 1884 | bool stomp_dest = (NOT_DEBUG(dest == T_OBJECT) DEBUG_ONLY(dest_count != 0)); |
never@2950 | 1885 | bool fix_arg_base = (!close_count.is_constant() || open_count != close_count.as_constant()); |
never@2950 | 1886 | |
never@2950 | 1887 | // Old and new argument locations (based at slot 0). |
never@2950 | 1888 | // Net shift (&new_argv - &old_argv) is (close_count - open_count). |
never@2950 | 1889 | bool zero_open_count = (open_count == 0); // remember this bit of info |
never@2950 | 1890 | if (move_keep3 && fix_arg_base) { |
never@2950 | 1891 | // It will be easier to have everything in one register: |
never@2950 | 1892 | if (close_count.is_register()) { |
never@2950 | 1893 | // Deduct open_count from close_count register to get a clean +/- value. |
never@2950 | 1894 | __ sub(close_count.as_register(), open_count, close_count.as_register()); |
never@2950 | 1895 | } else { |
never@2950 | 1896 | close_count = close_count.as_constant() - open_count; |
never@2950 | 1897 | } |
never@2950 | 1898 | open_count = 0; |
never@2950 | 1899 | } |
never@2950 | 1900 | Register L4_old_argv = RicochetFrame::L4_saved_args_base; |
never@2950 | 1901 | Register O3_new_argv = O3_scratch; |
never@2950 | 1902 | if (fix_arg_base) { |
never@2950 | 1903 | __ add(L4_old_argv, __ argument_offset(close_count, O4_scratch), O3_new_argv, |
never@2950 | 1904 | -(open_count * Interpreter::stackElementSize)); |
never@2950 | 1905 | } |
never@2950 | 1906 | |
never@2950 | 1907 | // First decide if any actual data are to be moved. |
never@2950 | 1908 | // We can skip if (a) |keep3| is empty, or (b) the argument list size didn't change. |
never@2950 | 1909 | // (As it happens, all movements involve an argument list size change.) |
never@2950 | 1910 | |
never@2950 | 1911 | // If there are variable parameters, use dynamic checks to skip around the whole mess. |
never@2950 | 1912 | Label L_done; |
never@2950 | 1913 | if (keep3_count.is_register()) { |
kvn@3037 | 1914 | __ cmp_and_br_short(keep3_count.as_register(), 0, Assembler::equal, Assembler::pn, L_done); |
never@2950 | 1915 | } |
never@2950 | 1916 | if (close_count.is_register()) { |
kvn@3037 | 1917 | __ cmp_and_br_short(close_count.as_register(), open_count, Assembler::equal, Assembler::pn, L_done); |
never@2950 | 1918 | } |
never@2950 | 1919 | |
never@2950 | 1920 | if (move_keep3 && fix_arg_base) { |
never@2950 | 1921 | bool emit_move_down = false, emit_move_up = false, emit_guard = false; |
never@2950 | 1922 | if (!close_count.is_constant()) { |
never@2950 | 1923 | emit_move_down = emit_guard = !zero_open_count; |
never@2950 | 1924 | emit_move_up = true; |
never@2950 | 1925 | } else if (open_count != close_count.as_constant()) { |
never@2950 | 1926 | emit_move_down = (open_count > close_count.as_constant()); |
never@2950 | 1927 | emit_move_up = !emit_move_down; |
never@2950 | 1928 | } |
never@2950 | 1929 | Label L_move_up; |
never@2950 | 1930 | if (emit_guard) { |
never@2950 | 1931 | __ cmp(close_count.as_register(), open_count); |
never@2950 | 1932 | __ br(Assembler::greater, false, Assembler::pn, L_move_up); |
never@2950 | 1933 | __ delayed()->nop(); |
never@2950 | 1934 | } |
never@2950 | 1935 | |
never@2950 | 1936 | if (emit_move_down) { |
never@2950 | 1937 | // Move arguments down if |+dest+| > |-collect-| |
never@2950 | 1938 | // (This is rare, except when arguments are retained.) |
never@2950 | 1939 | // This opens space for the return value. |
never@2950 | 1940 | if (keep3_count.is_constant()) { |
never@2950 | 1941 | for (int i = 0; i < keep3_count.as_constant(); i++) { |
never@2950 | 1942 | __ ld_ptr( Address(L4_old_argv, i * Interpreter::stackElementSize), O4_scratch); |
never@2950 | 1943 | __ st_ptr(O4_scratch, Address(O3_new_argv, i * Interpreter::stackElementSize) ); |
never@2950 | 1944 | } |
never@2950 | 1945 | } else { |
never@2950 | 1946 | // Live: O1_close_count, O2_keep3_count, O3_new_argv |
never@2950 | 1947 | Register argv_top = O0_scratch; |
never@2950 | 1948 | __ add(L4_old_argv, __ argument_offset(keep3_count, O4_scratch), argv_top); |
never@2950 | 1949 | move_arg_slots_down(_masm, |
never@2950 | 1950 | Address(L4_old_argv, 0), // beginning of old argv |
never@2950 | 1951 | argv_top, // end of old argv |
never@2950 | 1952 | close_count, // distance to move down (must be negative) |
never@2950 | 1953 | O4_scratch, G5_scratch); |
never@2950 | 1954 | } |
never@2950 | 1955 | } |
never@2950 | 1956 | |
never@2950 | 1957 | if (emit_guard) { |
kvn@3037 | 1958 | __ ba_short(L_done); // assumes emit_move_up is true also |
never@2950 | 1959 | __ BIND(L_move_up); |
never@2950 | 1960 | } |
never@2950 | 1961 | |
never@2950 | 1962 | if (emit_move_up) { |
never@2950 | 1963 | // Move arguments up if |+dest+| < |-collect-| |
never@2950 | 1964 | // (This is usual, except when |keep3| is empty.) |
never@2950 | 1965 | // This closes up the space occupied by the now-deleted collect values. |
never@2950 | 1966 | if (keep3_count.is_constant()) { |
never@2950 | 1967 | for (int i = keep3_count.as_constant() - 1; i >= 0; i--) { |
never@2950 | 1968 | __ ld_ptr( Address(L4_old_argv, i * Interpreter::stackElementSize), O4_scratch); |
never@2950 | 1969 | __ st_ptr(O4_scratch, Address(O3_new_argv, i * Interpreter::stackElementSize) ); |
never@2950 | 1970 | } |
never@2950 | 1971 | } else { |
never@2950 | 1972 | Address argv_top(L4_old_argv, __ argument_offset(keep3_count, O4_scratch)); |
never@2950 | 1973 | // Live: O1_close_count, O2_keep3_count, O3_new_argv |
never@2950 | 1974 | move_arg_slots_up(_masm, |
never@2950 | 1975 | L4_old_argv, // beginning of old argv |
never@2950 | 1976 | argv_top, // end of old argv |
never@2950 | 1977 | close_count, // distance to move up (must be positive) |
never@2950 | 1978 | O4_scratch, G5_scratch); |
never@2950 | 1979 | } |
never@2950 | 1980 | } |
never@2950 | 1981 | } |
never@2950 | 1982 | __ BIND(L_done); |
never@2950 | 1983 | |
never@2950 | 1984 | if (fix_arg_base) { |
never@2950 | 1985 | // adjust RF.saved_args_base |
never@2950 | 1986 | __ mov(O3_new_argv, RicochetFrame::L4_saved_args_base); |
never@2950 | 1987 | } |
never@2950 | 1988 | |
never@2950 | 1989 | if (stomp_dest) { |
never@2950 | 1990 | // Stomp the return slot, so it doesn't hold garbage. |
never@2950 | 1991 | // This isn't strictly necessary, but it may help detect bugs. |
never@2950 | 1992 | __ set(RicochetFrame::RETURN_VALUE_PLACEHOLDER, O4_scratch); |
never@2950 | 1993 | __ st_ptr(O4_scratch, Address(RicochetFrame::L4_saved_args_base, |
never@2950 | 1994 | __ argument_offset(keep3_count, keep3_count.register_or_noreg()))); // uses O2_keep3_count |
never@2950 | 1995 | } |
never@2950 | 1996 | BLOCK_COMMENT("} adjust trailing arguments"); |
never@2950 | 1997 | |
never@2950 | 1998 | BLOCK_COMMENT("do_recursive_call"); |
never@2950 | 1999 | __ mov(SP, O5_savedSP); // record SP for the callee |
never@2950 | 2000 | __ set(ExternalAddress(SharedRuntime::ricochet_blob()->bounce_addr() - frame::pc_return_offset), O7); |
never@2950 | 2001 | // The globally unique bounce address has two purposes: |
never@2950 | 2002 | // 1. It helps the JVM recognize this frame (frame::is_ricochet_frame). |
never@2950 | 2003 | // 2. When returned to, it cuts back the stack and redirects control flow |
never@2950 | 2004 | // to the return handler. |
never@2950 | 2005 | // The return handler will further cut back the stack when it takes |
never@2950 | 2006 | // down the RF. Perhaps there is a way to streamline this further. |
never@2950 | 2007 | |
never@2950 | 2008 | // State during recursive call: |
never@2950 | 2009 | // ... keep1 | dest | dest=42 | keep3 | RF... | collect | bounce_pc | |
never@2950 | 2010 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
twisti@1858 | 2011 | } |
twisti@1858 | 2012 | break; |
twisti@1858 | 2013 | |
never@2950 | 2014 | case _adapter_opt_return_ref: |
never@2950 | 2015 | case _adapter_opt_return_int: |
never@2950 | 2016 | case _adapter_opt_return_long: |
never@2950 | 2017 | case _adapter_opt_return_float: |
never@2950 | 2018 | case _adapter_opt_return_double: |
never@2950 | 2019 | case _adapter_opt_return_void: |
never@2950 | 2020 | case _adapter_opt_return_S0_ref: |
never@2950 | 2021 | case _adapter_opt_return_S1_ref: |
never@2950 | 2022 | case _adapter_opt_return_S2_ref: |
never@2950 | 2023 | case _adapter_opt_return_S3_ref: |
never@2950 | 2024 | case _adapter_opt_return_S4_ref: |
never@2950 | 2025 | case _adapter_opt_return_S5_ref: |
never@2950 | 2026 | { |
never@2950 | 2027 | BasicType dest_type_constant = ek_adapter_opt_return_type(ek); |
never@2950 | 2028 | int dest_slot_constant = ek_adapter_opt_return_slot(ek); |
never@2950 | 2029 | |
never@2950 | 2030 | if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
never@2950 | 2031 | |
never@2950 | 2032 | if (dest_slot_constant == -1) { |
never@2950 | 2033 | // The current stub is a general handler for this dest_type. |
never@2950 | 2034 | // It can be called from _adapter_opt_return_any below. |
never@2950 | 2035 | // Stash the address in a little table. |
never@2950 | 2036 | assert((dest_type_constant & CONV_TYPE_MASK) == dest_type_constant, "oob"); |
never@2950 | 2037 | address return_handler = __ pc(); |
never@2950 | 2038 | _adapter_return_handlers[dest_type_constant] = return_handler; |
never@2950 | 2039 | if (dest_type_constant == T_INT) { |
never@2950 | 2040 | // do the subword types too |
never@2950 | 2041 | for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
never@2950 | 2042 | if (is_subword_type(BasicType(bt)) && |
never@2950 | 2043 | _adapter_return_handlers[bt] == NULL) { |
never@2950 | 2044 | _adapter_return_handlers[bt] = return_handler; |
never@2950 | 2045 | } |
never@2950 | 2046 | } |
never@2950 | 2047 | } |
never@2950 | 2048 | } |
never@2950 | 2049 | |
never@2950 | 2050 | // On entry to this continuation handler, make Gargs live again. |
never@2950 | 2051 | __ mov(RicochetFrame::L4_saved_args_base, Gargs); |
never@2950 | 2052 | |
never@2950 | 2053 | Register O7_temp = O7; |
never@2950 | 2054 | Register O5_vminfo = O5; |
never@2950 | 2055 | |
never@2950 | 2056 | RegisterOrConstant dest_slot = dest_slot_constant; |
never@2950 | 2057 | if (dest_slot_constant == -1) { |
never@2950 | 2058 | extract_conversion_vminfo(_masm, RicochetFrame::L5_conversion, O5_vminfo); |
never@2950 | 2059 | dest_slot = O5_vminfo; |
never@2950 | 2060 | } |
never@2950 | 2061 | // Store the result back into the argslot. |
never@2950 | 2062 | // This code uses the interpreter calling sequence, in which the return value |
never@2950 | 2063 | // is usually left in the TOS register, as defined by InterpreterMacroAssembler::pop. |
never@2950 | 2064 | // There are certain irregularities with floating point values, which can be seen |
never@2950 | 2065 | // in TemplateInterpreterGenerator::generate_return_entry_for. |
never@2950 | 2066 | move_return_value(_masm, dest_type_constant, __ argument_address(dest_slot, O7_temp)); |
never@2950 | 2067 | |
never@2950 | 2068 | RicochetFrame::leave_ricochet_frame(_masm, G3_method_handle, I5_savedSP, I7); |
never@2950 | 2069 | |
never@2950 | 2070 | // Load the final target and go. |
never@2950 | 2071 | if (VerifyMethodHandles) verify_method_handle(_masm, G3_method_handle, O0_scratch, O1_scratch); |
never@2950 | 2072 | __ restore(I5_savedSP, G0, SP); |
never@2950 | 2073 | __ jump_to_method_handle_entry(G3_method_handle, O0_scratch); |
never@2950 | 2074 | __ illtrap(0); |
never@2950 | 2075 | } |
never@2950 | 2076 | break; |
never@2950 | 2077 | |
never@2950 | 2078 | case _adapter_opt_return_any: |
never@2950 | 2079 | { |
never@2950 | 2080 | Register O7_temp = O7; |
never@2950 | 2081 | Register O5_dest_type = O5; |
never@2950 | 2082 | |
never@2950 | 2083 | if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
never@2950 | 2084 | extract_conversion_dest_type(_masm, RicochetFrame::L5_conversion, O5_dest_type); |
never@2950 | 2085 | __ set(ExternalAddress((address) &_adapter_return_handlers[0]), O7_temp); |
never@2950 | 2086 | __ sll_ptr(O5_dest_type, LogBytesPerWord, O5_dest_type); |
never@2950 | 2087 | __ ld_ptr(O7_temp, O5_dest_type, O7_temp); |
never@2950 | 2088 | |
never@2950 | 2089 | #ifdef ASSERT |
never@2950 | 2090 | { Label L_ok; |
kvn@3037 | 2091 | __ br_notnull_short(O7_temp, Assembler::pt, L_ok); |
never@2950 | 2092 | __ stop("bad method handle return"); |
never@2950 | 2093 | __ BIND(L_ok); |
never@2950 | 2094 | } |
never@2950 | 2095 | #endif //ASSERT |
never@2950 | 2096 | __ JMP(O7_temp, 0); |
never@2950 | 2097 | __ delayed()->nop(); |
never@2950 | 2098 | } |
never@2950 | 2099 | break; |
never@2950 | 2100 | |
never@2950 | 2101 | case _adapter_opt_spread_0: |
never@2950 | 2102 | case _adapter_opt_spread_1_ref: |
never@2950 | 2103 | case _adapter_opt_spread_2_ref: |
never@2950 | 2104 | case _adapter_opt_spread_3_ref: |
never@2950 | 2105 | case _adapter_opt_spread_4_ref: |
never@2950 | 2106 | case _adapter_opt_spread_5_ref: |
never@2950 | 2107 | case _adapter_opt_spread_ref: |
never@2950 | 2108 | case _adapter_opt_spread_byte: |
never@2950 | 2109 | case _adapter_opt_spread_char: |
never@2950 | 2110 | case _adapter_opt_spread_short: |
never@2950 | 2111 | case _adapter_opt_spread_int: |
never@2950 | 2112 | case _adapter_opt_spread_long: |
never@2950 | 2113 | case _adapter_opt_spread_float: |
never@2950 | 2114 | case _adapter_opt_spread_double: |
never@2950 | 2115 | { |
never@2950 | 2116 | // spread an array out into a group of arguments |
never@2950 | 2117 | int length_constant = ek_adapter_opt_spread_count(ek); |
never@2950 | 2118 | bool length_can_be_zero = (length_constant == 0); |
never@2950 | 2119 | if (length_constant < 0) { |
never@2950 | 2120 | // some adapters with variable length must handle the zero case |
never@2950 | 2121 | if (!OptimizeMethodHandles || |
never@2950 | 2122 | ek_adapter_opt_spread_type(ek) != T_OBJECT) |
never@2950 | 2123 | length_can_be_zero = true; |
never@2950 | 2124 | } |
never@2950 | 2125 | |
never@2950 | 2126 | // find the address of the array argument |
never@2950 | 2127 | load_vmargslot(_masm, G3_amh_vmargslot, O0_argslot); |
never@2950 | 2128 | __ add(__ argument_address(O0_argslot, O0_argslot), O0_argslot); |
never@2950 | 2129 | |
never@2950 | 2130 | // O0_argslot points both to the array and to the first output arg |
never@2950 | 2131 | Address vmarg = Address(O0_argslot, 0); |
never@2950 | 2132 | |
never@2950 | 2133 | // Get the array value. |
never@2950 | 2134 | Register O1_array = O1_scratch; |
never@2950 | 2135 | Register O2_array_klass = O2_scratch; |
never@2950 | 2136 | BasicType elem_type = ek_adapter_opt_spread_type(ek); |
never@2950 | 2137 | int elem_slots = type2size[elem_type]; // 1 or 2 |
never@2950 | 2138 | int array_slots = 1; // array is always a T_OBJECT |
never@2950 | 2139 | int length_offset = arrayOopDesc::length_offset_in_bytes(); |
never@2950 | 2140 | int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); |
never@2950 | 2141 | __ ld_ptr(vmarg, O1_array); |
never@2950 | 2142 | |
never@2950 | 2143 | Label L_array_is_empty, L_insert_arg_space, L_copy_args, L_args_done; |
never@2950 | 2144 | if (length_can_be_zero) { |
never@2950 | 2145 | // handle the null pointer case, if zero is allowed |
never@2950 | 2146 | Label L_skip; |
never@2950 | 2147 | if (length_constant < 0) { |
never@2950 | 2148 | load_conversion_vminfo(_masm, G3_amh_conversion, O3_scratch); |
kvn@3037 | 2149 | __ cmp_zero_and_br(Assembler::notZero, O3_scratch, L_skip); |
kvn@3037 | 2150 | __ delayed()->nop(); // to avoid back-to-back cbcond instructions |
never@2950 | 2151 | } |
kvn@3037 | 2152 | __ br_null_short(O1_array, Assembler::pn, L_array_is_empty); |
never@2950 | 2153 | __ BIND(L_skip); |
never@2950 | 2154 | } |
never@2950 | 2155 | __ null_check(O1_array, oopDesc::klass_offset_in_bytes()); |
never@2950 | 2156 | __ load_klass(O1_array, O2_array_klass); |
never@2950 | 2157 | |
never@2950 | 2158 | // Check the array type. |
never@2950 | 2159 | Register O3_klass = O3_scratch; |
never@2950 | 2160 | __ load_heap_oop(G3_amh_argument, O3_klass); // this is a Class object! |
never@2950 | 2161 | load_klass_from_Class(_masm, O3_klass, O4_scratch, G5_scratch); |
never@2950 | 2162 | |
never@2950 | 2163 | Label L_ok_array_klass, L_bad_array_klass, L_bad_array_length; |
never@2950 | 2164 | __ check_klass_subtype(O2_array_klass, O3_klass, O4_scratch, G5_scratch, L_ok_array_klass); |
never@2950 | 2165 | // If we get here, the type check failed! |
kvn@3037 | 2166 | __ ba_short(L_bad_array_klass); |
never@2950 | 2167 | __ BIND(L_ok_array_klass); |
never@2950 | 2168 | |
never@2950 | 2169 | // Check length. |
never@2950 | 2170 | if (length_constant >= 0) { |
never@2950 | 2171 | __ ldsw(Address(O1_array, length_offset), O4_scratch); |
never@2950 | 2172 | __ cmp(O4_scratch, length_constant); |
never@2950 | 2173 | } else { |
never@2950 | 2174 | Register O3_vminfo = O3_scratch; |
never@2950 | 2175 | load_conversion_vminfo(_masm, G3_amh_conversion, O3_vminfo); |
never@2950 | 2176 | __ ldsw(Address(O1_array, length_offset), O4_scratch); |
never@2950 | 2177 | __ cmp(O3_vminfo, O4_scratch); |
never@2950 | 2178 | } |
never@2950 | 2179 | __ br(Assembler::notEqual, false, Assembler::pn, L_bad_array_length); |
never@2950 | 2180 | __ delayed()->nop(); |
never@2950 | 2181 | |
never@2950 | 2182 | Register O2_argslot_limit = O2_scratch; |
never@2950 | 2183 | |
never@2950 | 2184 | // Array length checks out. Now insert any required stack slots. |
never@2950 | 2185 | if (length_constant == -1) { |
never@2950 | 2186 | // Form a pointer to the end of the affected region. |
never@2950 | 2187 | __ add(O0_argslot, Interpreter::stackElementSize, O2_argslot_limit); |
never@2950 | 2188 | // 'stack_move' is negative number of words to insert |
never@2950 | 2189 | // This number already accounts for elem_slots. |
never@2950 | 2190 | Register O3_stack_move = O3_scratch; |
never@2950 | 2191 | load_stack_move(_masm, G3_amh_conversion, O3_stack_move); |
never@2950 | 2192 | __ cmp(O3_stack_move, 0); |
never@2950 | 2193 | assert(stack_move_unit() < 0, "else change this comparison"); |
never@2950 | 2194 | __ br(Assembler::less, false, Assembler::pn, L_insert_arg_space); |
never@2950 | 2195 | __ delayed()->nop(); |
never@2950 | 2196 | __ br(Assembler::equal, false, Assembler::pn, L_copy_args); |
never@2950 | 2197 | __ delayed()->nop(); |
never@2950 | 2198 | // single argument case, with no array movement |
never@2950 | 2199 | __ BIND(L_array_is_empty); |
never@2950 | 2200 | remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
never@2950 | 2201 | O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
kvn@3037 | 2202 | __ ba_short(L_args_done); // no spreading to do |
never@2950 | 2203 | __ BIND(L_insert_arg_space); |
never@2950 | 2204 | // come here in the usual case, stack_move < 0 (2 or more spread arguments) |
never@2950 | 2205 | // Live: O1_array, O2_argslot_limit, O3_stack_move |
never@2950 | 2206 | insert_arg_slots(_masm, O3_stack_move, |
never@2950 | 2207 | O0_argslot, O4_scratch, G5_scratch, O1_scratch); |
never@2950 | 2208 | // reload from rdx_argslot_limit since rax_argslot is now decremented |
never@2950 | 2209 | __ ld_ptr(Address(O2_argslot_limit, -Interpreter::stackElementSize), O1_array); |
never@2950 | 2210 | } else if (length_constant >= 1) { |
never@2950 | 2211 | int new_slots = (length_constant * elem_slots) - array_slots; |
never@2950 | 2212 | insert_arg_slots(_masm, new_slots * stack_move_unit(), |
never@2950 | 2213 | O0_argslot, O2_scratch, O3_scratch, O4_scratch); |
never@2950 | 2214 | } else if (length_constant == 0) { |
never@2950 | 2215 | __ BIND(L_array_is_empty); |
never@2950 | 2216 | remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
never@2950 | 2217 | O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
never@2950 | 2218 | } else { |
never@2950 | 2219 | ShouldNotReachHere(); |
never@2950 | 2220 | } |
never@2950 | 2221 | |
never@2950 | 2222 | // Copy from the array to the new slots. |
never@2950 | 2223 | // Note: Stack change code preserves integrity of O0_argslot pointer. |
never@2950 | 2224 | // So even after slot insertions, O0_argslot still points to first argument. |
never@2950 | 2225 | // Beware: Arguments that are shallow on the stack are deep in the array, |
never@2950 | 2226 | // and vice versa. So a downward-growing stack (the usual) has to be copied |
never@2950 | 2227 | // elementwise in reverse order from the source array. |
never@2950 | 2228 | __ BIND(L_copy_args); |
never@2950 | 2229 | if (length_constant == -1) { |
never@2950 | 2230 | // [O0_argslot, O2_argslot_limit) is the area we are inserting into. |
never@2950 | 2231 | // Array element [0] goes at O0_argslot_limit[-wordSize]. |
never@2950 | 2232 | Register O1_source = O1_array; |
never@2950 | 2233 | __ add(Address(O1_array, elem0_offset), O1_source); |
never@2950 | 2234 | Register O4_fill_ptr = O4_scratch; |
never@2950 | 2235 | __ mov(O2_argslot_limit, O4_fill_ptr); |
never@2950 | 2236 | Label L_loop; |
never@2950 | 2237 | __ BIND(L_loop); |
never@2950 | 2238 | __ add(O4_fill_ptr, -Interpreter::stackElementSize * elem_slots, O4_fill_ptr); |
never@2950 | 2239 | move_typed_arg(_masm, elem_type, true, |
never@2950 | 2240 | Address(O1_source, 0), Address(O4_fill_ptr, 0), |
never@2950 | 2241 | O2_scratch); // must be an even register for !_LP64 long moves (uses O2/O3) |
never@2950 | 2242 | __ add(O1_source, type2aelembytes(elem_type), O1_source); |
kvn@3037 | 2243 | __ cmp_and_brx_short(O4_fill_ptr, O0_argslot, Assembler::greaterUnsigned, Assembler::pt, L_loop); |
never@2950 | 2244 | } else if (length_constant == 0) { |
never@2950 | 2245 | // nothing to copy |
never@2950 | 2246 | } else { |
never@2950 | 2247 | int elem_offset = elem0_offset; |
never@2950 | 2248 | int slot_offset = length_constant * Interpreter::stackElementSize; |
never@2950 | 2249 | for (int index = 0; index < length_constant; index++) { |
never@2950 | 2250 | slot_offset -= Interpreter::stackElementSize * elem_slots; // fill backward |
never@2950 | 2251 | move_typed_arg(_masm, elem_type, true, |
never@2950 | 2252 | Address(O1_array, elem_offset), Address(O0_argslot, slot_offset), |
never@2950 | 2253 | O2_scratch); // must be an even register for !_LP64 long moves (uses O2/O3) |
never@2950 | 2254 | elem_offset += type2aelembytes(elem_type); |
never@2950 | 2255 | } |
never@2950 | 2256 | } |
never@2950 | 2257 | __ BIND(L_args_done); |
never@2950 | 2258 | |
never@2950 | 2259 | // Arguments are spread. Move to next method handle. |
never@2950 | 2260 | __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
never@2950 | 2261 | __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
never@2950 | 2262 | |
never@2950 | 2263 | __ BIND(L_bad_array_klass); |
never@2950 | 2264 | assert(!vmarg.uses(O2_required), "must be different registers"); |
never@2950 | 2265 | __ load_heap_oop(Address(O2_array_klass, java_mirror_offset), O2_required); // required class |
never@2950 | 2266 | __ ld_ptr( vmarg, O1_actual); // bad object |
never@2950 | 2267 | __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
never@2950 | 2268 | __ delayed()->mov(Bytecodes::_aaload, O0_code); // who is complaining? |
never@2950 | 2269 | |
never@2950 | 2270 | __ bind(L_bad_array_length); |
never@2950 | 2271 | assert(!vmarg.uses(O2_required), "must be different registers"); |
never@2950 | 2272 | __ mov( G3_method_handle, O2_required); // required class |
never@2950 | 2273 | __ ld_ptr(vmarg, O1_actual); // bad object |
never@2950 | 2274 | __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
never@2950 | 2275 | __ delayed()->mov(Bytecodes::_arraylength, O0_code); // who is complaining? |
never@2950 | 2276 | } |
twisti@1858 | 2277 | break; |
twisti@1858 | 2278 | |
twisti@1858 | 2279 | default: |
never@2950 | 2280 | DEBUG_ONLY(tty->print_cr("bad ek=%d (%s)", (int)ek, entry_name(ek))); |
twisti@1858 | 2281 | ShouldNotReachHere(); |
twisti@1858 | 2282 | } |
never@2950 | 2283 | BLOCK_COMMENT(err_msg("} Entry %s", entry_name(ek))); |
twisti@1858 | 2284 | |
twisti@1858 | 2285 | address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); |
twisti@1858 | 2286 | __ unimplemented(entry_name(ek)); // %%% FIXME: NYI |
twisti@1858 | 2287 | |
twisti@1858 | 2288 | init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); |
jrose@1145 | 2289 | } |