Mercurial > hg > truffle
annotate src/cpu/sparc/vm/methodHandles_sparc.cpp @ 2480:4b95bbb36464
7035870: JSR 292: Zero support
Summary: This adds support for JSR 292 to Zero.
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
---|---|
date | Tue, 12 Apr 2011 02:40:23 -0700 |
parents | 3ef1a1866a60 |
children | d934e4b931e9 |
rev | line source |
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710 | 1 /* |
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2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
710 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
710 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
27 #include "memory/allocation.inline.hpp" | |
28 #include "prims/methodHandles.hpp" | |
710 | 29 |
30 #define __ _masm-> | |
31 | |
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32 #ifdef PRODUCT |
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33 #define BLOCK_COMMENT(str) /* nothing */ |
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34 #else |
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35 #define BLOCK_COMMENT(str) __ block_comment(str) |
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36 #endif |
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37 |
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38 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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39 |
710 | 40 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
41 address interpreted_entry) { | |
1503 | 42 // Just before the actual machine code entry point, allocate space |
43 // for a MethodHandleEntry::Data record, so that we can manage everything | |
44 // from one base pointer. | |
710 | 45 __ align(wordSize); |
46 address target = __ pc() + sizeof(Data); | |
47 while (__ pc() < target) { | |
48 __ nop(); | |
49 __ align(wordSize); | |
50 } | |
51 | |
52 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
53 me->set_end_address(__ pc()); // set a temporary end_address | |
54 me->set_from_interpreted_entry(interpreted_entry); | |
55 me->set_type_checking_entry(NULL); | |
56 | |
57 return (address) me; | |
58 } | |
59 | |
60 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
61 address start_addr) { | |
62 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
63 assert(me->end_address() == start_addr, "valid ME"); | |
64 | |
65 // Fill in the real end_address: | |
66 __ align(wordSize); | |
67 me->set_end_address(__ pc()); | |
68 | |
69 return me; | |
70 } | |
71 | |
72 | |
73 // Code generation | |
74 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
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75 // I5_savedSP/O5_savedSP: sender SP (must preserve) |
1503 | 76 // G4 (Gargs): incoming argument list (must preserve) |
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77 // G5_method: invoke methodOop |
1503 | 78 // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots]) |
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79 // O0, O1, O2, O3, O4: garbage temps, blown away |
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80 Register O0_mtype = O0; |
1503 | 81 Register O1_scratch = O1; |
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82 Register O2_scratch = O2; |
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83 Register O3_scratch = O3; |
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84 Register O4_argslot = O4; |
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85 Register O4_argbase = O4; |
1503 | 86 |
87 // emit WrongMethodType path first, to enable back-branch from main path | |
88 Label wrong_method_type; | |
89 __ bind(wrong_method_type); | |
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90 Label invoke_generic_slow_path; |
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91 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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92 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
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93 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeExact); |
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94 __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path); |
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95 __ delayed()->nop(); |
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96 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType |
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97 // mov(G3_method_handle, G3_method_handle); // already in this register |
1503 | 98 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); |
99 __ delayed()->nop(); | |
100 | |
101 // here's where control starts out: | |
102 __ align(CodeEntryAlignment); | |
103 address entry_point = __ pc(); | |
104 | |
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105 // fetch the MethodType from the method handle |
1503 | 106 { |
107 Register tem = G5_method; | |
108 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
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109 __ ld_ptr(Address(tem, *pchase), O0_mtype); |
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110 tem = O0_mtype; // in case there is another indirection |
1503 | 111 } |
112 } | |
113 | |
114 // given the MethodType, find out where the MH argument is buried | |
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115 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O4_argslot); |
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116 __ ldsw( Address(O4_argslot, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O4_argslot); |
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117 __ add(Gargs, __ argument_offset(O4_argslot, 1), O4_argbase); |
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118 // Note: argument_address uses its input as a scratch register! |
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119 __ ld_ptr(Address(O4_argbase, -Interpreter::stackElementSize), G3_method_handle); |
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120 |
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121 trace_method_handle(_masm, "invokeExact"); |
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122 |
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123 __ check_method_handle_type(O0_mtype, G3_method_handle, O1_scratch, wrong_method_type); |
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124 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
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125 |
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126 // for invokeGeneric (only), apply argument and result conversions on the fly |
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127 __ bind(invoke_generic_slow_path); |
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128 #ifdef ASSERT |
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129 { Label L; |
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130 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
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131 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeGeneric); |
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132 __ brx(Assembler::equal, false, Assembler::pt, L); |
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133 __ delayed()->nop(); |
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134 __ stop("bad methodOop::intrinsic_id"); |
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135 __ bind(L); |
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136 } |
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137 #endif //ASSERT |
1503 | 138 |
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139 // make room on the stack for another pointer: |
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140 insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, O4_argbase, O1_scratch, O2_scratch, O3_scratch); |
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141 // load up an adapter from the calling type (Java weaves this) |
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142 Register O2_form = O2_scratch; |
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143 Register O3_adapter = O3_scratch; |
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144 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O2_form); |
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145 // load_heap_oop(Address(O2_form, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); |
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146 // deal with old JDK versions: |
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147 __ add( Address(O2_form, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); |
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148 __ cmp(O3_adapter, O2_form); |
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149 Label sorry_no_invoke_generic; |
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150 __ brx(Assembler::lessUnsigned, false, Assembler::pn, sorry_no_invoke_generic); |
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151 __ delayed()->nop(); |
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152 |
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153 __ load_heap_oop(Address(O3_adapter, 0), O3_adapter); |
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154 __ tst(O3_adapter); |
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155 __ brx(Assembler::zero, false, Assembler::pn, sorry_no_invoke_generic); |
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156 __ delayed()->nop(); |
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157 __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize)); |
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158 // As a trusted first argument, pass the type being called, so the adapter knows |
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159 // the actual types of the arguments and return values. |
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160 // (Generic invokers are shared among form-families of method-type.) |
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161 __ st_ptr(O0_mtype, Address(O4_argbase, 0 * Interpreter::stackElementSize)); |
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162 // FIXME: assert that O3_adapter is of the right method-type. |
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163 __ mov(O3_adapter, G3_method_handle); |
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164 trace_method_handle(_masm, "invokeGeneric"); |
1503 | 165 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
166 | |
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167 __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! |
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168 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType |
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169 // mov(G3_method_handle, G3_method_handle); // already in this register |
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170 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); |
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171 __ delayed()->nop(); |
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172 |
1503 | 173 return entry_point; |
710 | 174 } |
175 | |
1503 | 176 |
177 #ifdef ASSERT | |
178 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) { | |
179 // Verify that argslot lies within (Gargs, FP]. | |
180 Label L_ok, L_bad; | |
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181 BLOCK_COMMENT("{ verify_argslot"); |
1503 | 182 #ifdef _LP64 |
183 __ add(FP, STACK_BIAS, temp_reg); | |
184 __ cmp(argslot_reg, temp_reg); | |
185 #else | |
186 __ cmp(argslot_reg, FP); | |
187 #endif | |
188 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad); | |
189 __ delayed()->nop(); | |
190 __ cmp(Gargs, argslot_reg); | |
191 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); | |
192 __ delayed()->nop(); | |
193 __ bind(L_bad); | |
194 __ stop(error_message); | |
195 __ bind(L_ok); | |
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196 BLOCK_COMMENT("} verify_argslot"); |
1503 | 197 } |
198 #endif | |
199 | |
200 | |
201 // Helper to insert argument slots into the stack. | |
202 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
203 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
204 RegisterOrConstant arg_slots, | |
205 int arg_mask, | |
206 Register argslot_reg, | |
207 Register temp_reg, Register temp2_reg, Register temp3_reg) { | |
208 assert(temp3_reg != noreg, "temp3 required"); | |
209 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, | |
210 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); | |
211 | |
212 #ifdef ASSERT | |
213 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame"); | |
214 if (arg_slots.is_register()) { | |
215 Label L_ok, L_bad; | |
216 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); | |
217 __ br(Assembler::greater, false, Assembler::pn, L_bad); | |
218 __ delayed()->nop(); | |
219 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); | |
220 __ br(Assembler::zero, false, Assembler::pt, L_ok); | |
221 __ delayed()->nop(); | |
222 __ bind(L_bad); | |
223 __ stop("assert arg_slots <= 0 and clear low bits"); | |
224 __ bind(L_ok); | |
225 } else { | |
226 assert(arg_slots.as_constant() <= 0, ""); | |
227 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
228 } | |
229 #endif // ASSERT | |
230 | |
231 #ifdef _LP64 | |
232 if (arg_slots.is_register()) { | |
233 // Was arg_slots register loaded as signed int? | |
234 Label L_ok; | |
235 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg); | |
236 __ sra(temp_reg, BitsPerInt, temp_reg); | |
237 __ cmp(arg_slots.as_register(), temp_reg); | |
238 __ br(Assembler::equal, false, Assembler::pt, L_ok); | |
239 __ delayed()->nop(); | |
240 __ stop("arg_slots register not loaded as signed int"); | |
241 __ bind(L_ok); | |
242 } | |
243 #endif | |
244 | |
245 // Make space on the stack for the inserted argument(s). | |
246 // Then pull down everything shallower than argslot_reg. | |
247 // The stacked return address gets pulled down with everything else. | |
248 // That is, copy [sp, argslot) downward by -size words. In pseudo-code: | |
249 // sp -= size; | |
250 // for (temp = sp + size; temp < argslot; temp++) | |
251 // temp[-size] = temp[0] | |
252 // argslot -= size; | |
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253 BLOCK_COMMENT("insert_arg_slots {"); |
1503 | 254 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); |
255 | |
256 // Keep the stack pointer 2*wordSize aligned. | |
257 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); | |
258 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); | |
259 __ add(SP, masked_offset, SP); | |
260 | |
261 __ mov(Gargs, temp_reg); // source pointer for copy | |
262 __ add(Gargs, offset, Gargs); | |
263 | |
264 { | |
265 Label loop; | |
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266 __ BIND(loop); |
1503 | 267 // pull one word down each time through the loop |
268 __ ld_ptr(Address(temp_reg, 0), temp2_reg); | |
269 __ st_ptr(temp2_reg, Address(temp_reg, offset)); | |
270 __ add(temp_reg, wordSize, temp_reg); | |
271 __ cmp(temp_reg, argslot_reg); | |
272 __ brx(Assembler::less, false, Assembler::pt, loop); | |
273 __ delayed()->nop(); // FILLME | |
274 } | |
275 | |
276 // Now move the argslot down, to point to the opened-up space. | |
277 __ add(argslot_reg, offset, argslot_reg); | |
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278 BLOCK_COMMENT("} insert_arg_slots"); |
1503 | 279 } |
280 | |
281 | |
282 // Helper to remove argument slots from the stack. | |
283 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
284 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
285 RegisterOrConstant arg_slots, | |
286 Register argslot_reg, | |
287 Register temp_reg, Register temp2_reg, Register temp3_reg) { | |
288 assert(temp3_reg != noreg, "temp3 required"); | |
289 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, | |
290 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); | |
291 | |
292 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); | |
293 | |
294 #ifdef ASSERT | |
295 // Verify that [argslot..argslot+size) lies within (Gargs, FP). | |
296 __ add(argslot_reg, offset, temp2_reg); | |
297 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame"); | |
298 if (arg_slots.is_register()) { | |
299 Label L_ok, L_bad; | |
300 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); | |
301 __ br(Assembler::less, false, Assembler::pn, L_bad); | |
302 __ delayed()->nop(); | |
303 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); | |
304 __ br(Assembler::zero, false, Assembler::pt, L_ok); | |
305 __ delayed()->nop(); | |
306 __ bind(L_bad); | |
307 __ stop("assert arg_slots >= 0 and clear low bits"); | |
308 __ bind(L_ok); | |
309 } else { | |
310 assert(arg_slots.as_constant() >= 0, ""); | |
311 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
312 } | |
313 #endif // ASSERT | |
314 | |
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315 BLOCK_COMMENT("remove_arg_slots {"); |
1503 | 316 // Pull up everything shallower than argslot. |
317 // Then remove the excess space on the stack. | |
318 // The stacked return address gets pulled up with everything else. | |
319 // That is, copy [sp, argslot) upward by size words. In pseudo-code: | |
320 // for (temp = argslot-1; temp >= sp; --temp) | |
321 // temp[size] = temp[0] | |
322 // argslot += size; | |
323 // sp += size; | |
324 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy | |
325 { | |
326 Label loop; | |
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327 __ BIND(loop); |
1503 | 328 // pull one word up each time through the loop |
329 __ ld_ptr(Address(temp_reg, 0), temp2_reg); | |
330 __ st_ptr(temp2_reg, Address(temp_reg, offset)); | |
331 __ sub(temp_reg, wordSize, temp_reg); | |
332 __ cmp(temp_reg, Gargs); | |
333 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop); | |
334 __ delayed()->nop(); // FILLME | |
335 } | |
336 | |
337 // Now move the argslot up, to point to the just-copied block. | |
338 __ add(Gargs, offset, Gargs); | |
339 // And adjust the argslot address to point at the deletion point. | |
340 __ add(argslot_reg, offset, argslot_reg); | |
341 | |
342 // Keep the stack pointer 2*wordSize aligned. | |
343 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); | |
344 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); | |
345 __ add(SP, masked_offset, SP); | |
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346 BLOCK_COMMENT("} remove_arg_slots"); |
1503 | 347 } |
348 | |
349 | |
350 #ifndef PRODUCT | |
351 extern "C" void print_method_handle(oop mh); | |
352 void trace_method_handle_stub(const char* adaptername, | |
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353 oopDesc* mh) { |
1503 | 354 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh); |
355 print_method_handle(mh); | |
356 } | |
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357 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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358 if (!TraceMethodHandles) return; |
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359 BLOCK_COMMENT("trace_method_handle {"); |
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360 // save: Gargs, O5_savedSP |
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361 __ save_frame(16); |
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362 __ set((intptr_t) adaptername, O0); |
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363 __ mov(G3_method_handle, O1); |
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364 __ mov(G3_method_handle, L3); |
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365 __ mov(Gargs, L4); |
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366 __ mov(G5_method_type, L5); |
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367 __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
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368 |
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369 __ mov(L3, G3_method_handle); |
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370 __ mov(L4, Gargs); |
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371 __ mov(L5, G5_method_type); |
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372 __ restore(); |
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373 BLOCK_COMMENT("} trace_method_handle"); |
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374 } |
1503 | 375 #endif // PRODUCT |
376 | |
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377 // which conversion op types are implemented here? |
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378 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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379 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) |
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380 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) |
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381 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) |
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382 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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383 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) |
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384 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) |
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385 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) |
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386 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) |
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387 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) |
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388 //|(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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389 ); |
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390 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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391 } |
1503 | 392 |
393 //------------------------------------------------------------------------------ | |
394 // MethodHandles::generate_method_handle_stub | |
395 // | |
710 | 396 // Generate an "entry" field for a method handle. |
397 // This determines how the method handle will respond to calls. | |
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398 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
1503 | 399 // Here is the register state during an interpreted call, |
400 // as set up by generate_method_handle_interpreter_entry(): | |
401 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused) | |
402 // - G3: receiver method handle | |
403 // - O5_savedSP: sender SP (must preserve) | |
404 | |
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405 const Register O0_argslot = O0; |
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406 const Register O1_scratch = O1; |
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407 const Register O2_scratch = O2; |
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408 const Register O3_scratch = O3; |
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409 const Register G5_index = G5; |
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410 |
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411 // Argument registers for _raise_exception. |
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412 const Register O0_code = O0; |
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413 const Register O1_actual = O1; |
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414 const Register O2_required = O2; |
1503 | 415 |
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416 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
1503 | 417 |
418 // Some handy addresses: | |
419 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset())); | |
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420 Address G5_method_fce( G5_method, in_bytes(methodOopDesc::from_compiled_offset())); |
1503 | 421 |
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422 Address G3_mh_vmtarget( G3_method_handle, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes()); |
1503 | 423 |
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424 Address G3_dmh_vmindex( G3_method_handle, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes()); |
1503 | 425 |
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426 Address G3_bmh_vmargslot( G3_method_handle, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes()); |
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427 Address G3_bmh_argument( G3_method_handle, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes()); |
1503 | 428 |
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429 Address G3_amh_vmargslot( G3_method_handle, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes()); |
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430 Address G3_amh_argument ( G3_method_handle, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes()); |
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431 Address G3_amh_conversion(G3_method_handle, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes()); |
1503 | 432 |
433 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
434 | |
435 if (have_entry(ek)) { | |
436 __ nop(); // empty stubs make SG sick | |
437 return; | |
438 } | |
439 | |
440 address interp_entry = __ pc(); | |
441 | |
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442 trace_method_handle(_masm, entry_name(ek)); |
1503 | 443 |
444 switch ((int) ek) { | |
445 case _raise_exception: | |
446 { | |
447 // Not a real MH entry, but rather shared code for raising an | |
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448 // exception. Since we use the compiled entry, arguments are |
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449 // expected in compiler argument registers. |
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450 assert(raise_exception_method(), "must be set"); |
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451 assert(raise_exception_method()->from_compiled_entry(), "method must be linked"); |
1503 | 452 |
453 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started. | |
454 | |
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455 Label L_no_method; |
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456 // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method |
1503 | 457 __ set(AddressLiteral((address) &_raise_exception_method), G5_method); |
458 __ ld_ptr(Address(G5_method, 0), G5_method); | |
459 __ tst(G5_method); | |
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460 __ brx(Assembler::zero, false, Assembler::pn, L_no_method); |
1503 | 461 __ delayed()->nop(); |
462 | |
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463 const int jobject_oop_offset = 0; |
1503 | 464 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method); |
465 __ tst(G5_method); | |
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466 __ brx(Assembler::zero, false, Assembler::pn, L_no_method); |
1503 | 467 __ delayed()->nop(); |
468 | |
469 __ verify_oop(G5_method); | |
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470 __ jump_indirect_to(G5_method_fce, O3_scratch); // jump to compiled entry |
1503 | 471 __ delayed()->nop(); |
472 | |
473 // Do something that is at least causes a valid throw from the interpreter. | |
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474 __ bind(L_no_method); |
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475 __ unimplemented("call throw_WrongMethodType_entry"); |
1503 | 476 } |
477 break; | |
478 | |
479 case _invokestatic_mh: | |
480 case _invokespecial_mh: | |
481 { | |
1846 | 482 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
1503 | 483 __ verify_oop(G5_method); |
484 // Same as TemplateTable::invokestatic or invokespecial, | |
485 // minus the CP setup and profiling: | |
486 if (ek == _invokespecial_mh) { | |
487 // Must load & check the first argument before entering the target method. | |
488 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
489 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); | |
490 __ null_check(G3_method_handle); | |
491 __ verify_oop(G3_method_handle); | |
492 } | |
493 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
494 __ delayed()->nop(); | |
495 } | |
496 break; | |
497 | |
498 case _invokevirtual_mh: | |
499 { | |
500 // Same as TemplateTable::invokevirtual, | |
501 // minus the CP setup and profiling: | |
502 | |
503 // Pick out the vtable index and receiver offset from the MH, | |
504 // and then we can discard it: | |
505 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
506 __ ldsw(G3_dmh_vmindex, G5_index); | |
507 // Note: The verifier allows us to ignore G3_mh_vmtarget. | |
508 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); | |
509 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); | |
510 | |
511 // Get receiver klass: | |
512 Register O0_klass = O0_argslot; | |
513 __ load_klass(G3_method_handle, O0_klass); | |
514 __ verify_oop(O0_klass); | |
515 | |
516 // Get target methodOop & entry point: | |
517 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
518 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
519 | |
520 __ sll_ptr(G5_index, LogBytesPerWord, G5_index); | |
521 __ add(O0_klass, G5_index, O0_klass); | |
522 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes()); | |
523 __ ld_ptr(vtable_entry_addr, G5_method); | |
524 | |
525 __ verify_oop(G5_method); | |
526 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
527 __ delayed()->nop(); | |
528 } | |
529 break; | |
530 | |
531 case _invokeinterface_mh: | |
532 { | |
533 // Same as TemplateTable::invokeinterface, | |
534 // minus the CP setup and profiling: | |
535 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
536 Register O1_intf = O1_scratch; | |
1846 | 537 __ load_heap_oop(G3_mh_vmtarget, O1_intf); |
1503 | 538 __ ldsw(G3_dmh_vmindex, G5_index); |
539 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); | |
540 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); | |
541 | |
542 // Get receiver klass: | |
543 Register O0_klass = O0_argslot; | |
544 __ load_klass(G3_method_handle, O0_klass); | |
545 __ verify_oop(O0_klass); | |
546 | |
547 // Get interface: | |
548 Label no_such_interface; | |
549 __ verify_oop(O1_intf); | |
550 __ lookup_interface_method(O0_klass, O1_intf, | |
551 // Note: next two args must be the same: | |
552 G5_index, G5_method, | |
553 O2_scratch, | |
554 O3_scratch, | |
555 no_such_interface); | |
556 | |
557 __ verify_oop(G5_method); | |
558 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
559 __ delayed()->nop(); | |
560 | |
561 __ bind(no_such_interface); | |
562 // Throw an exception. | |
563 // For historical reasons, it will be IncompatibleClassChangeError. | |
564 __ unimplemented("not tested yet"); | |
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565 __ ld_ptr(Address(O1_intf, java_mirror_offset), O2_required); // required interface |
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566 __ mov( O0_klass, O1_actual); // bad receiver |
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567 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
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568 __ delayed()->mov(Bytecodes::_invokeinterface, O0_code); // who is complaining? |
1503 | 569 } |
570 break; | |
571 | |
572 case _bound_ref_mh: | |
573 case _bound_int_mh: | |
574 case _bound_long_mh: | |
575 case _bound_ref_direct_mh: | |
576 case _bound_int_direct_mh: | |
577 case _bound_long_direct_mh: | |
578 { | |
579 const bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
580 BasicType arg_type = T_ILLEGAL; | |
581 int arg_mask = _INSERT_NO_MASK; | |
582 int arg_slots = -1; | |
583 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
584 | |
585 // Make room for the new argument: | |
586 __ ldsw(G3_bmh_vmargslot, O0_argslot); | |
587 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
588 | |
589 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index); | |
590 | |
591 // Store bound argument into the new stack slot: | |
1846 | 592 __ load_heap_oop(G3_bmh_argument, O1_scratch); |
1503 | 593 if (arg_type == T_OBJECT) { |
594 __ st_ptr(O1_scratch, Address(O0_argslot, 0)); | |
595 } else { | |
596 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
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597 const int arg_size = type2aelembytes(arg_type); |
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598 __ load_sized_value(prim_value_addr, O2_scratch, arg_size, is_signed_subword_type(arg_type)); |
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599 __ store_sized_value(O2_scratch, Address(O0_argslot, 0), arg_size); // long store uses O2/O3 on !_LP64 |
1503 | 600 } |
601 | |
602 if (direct_to_method) { | |
1846 | 603 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
1503 | 604 __ verify_oop(G5_method); |
605 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
606 __ delayed()->nop(); | |
607 } else { | |
1846 | 608 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop |
1503 | 609 __ verify_oop(G3_method_handle); |
610 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
611 } | |
612 } | |
613 break; | |
614 | |
615 case _adapter_retype_only: | |
616 case _adapter_retype_raw: | |
617 // Immediately jump to the next MH layer: | |
1846 | 618 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
1503 | 619 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
620 // This is OK when all parameter types widen. | |
621 // It is also OK when a return type narrows. | |
622 break; | |
623 | |
624 case _adapter_check_cast: | |
625 { | |
626 // Temps: | |
627 Register G5_klass = G5_index; // Interesting AMH data. | |
628 | |
629 // Check a reference argument before jumping to the next layer of MH: | |
630 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
631 Address vmarg = __ argument_address(O0_argslot); | |
632 | |
633 // What class are we casting to? | |
1846 | 634 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object! |
635 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass); | |
1503 | 636 |
637 Label done; | |
638 __ ld_ptr(vmarg, O1_scratch); | |
639 __ tst(O1_scratch); | |
640 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null. | |
641 __ delayed()->nop(); | |
642 __ load_klass(O1_scratch, O1_scratch); | |
643 | |
644 // Live at this point: | |
645 // - G5_klass : klass required by the target method | |
646 // - O1_scratch : argument klass to test | |
647 // - G3_method_handle: adapter method handle | |
648 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done); | |
649 | |
650 // If we get here, the type check failed! | |
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651 __ load_heap_oop(G3_amh_argument, O2_required); // required class |
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652 __ ld_ptr( vmarg, O1_actual); // bad object |
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653 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
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654 __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining? |
1503 | 655 |
656 __ bind(done); | |
657 // Get the new MH: | |
1846 | 658 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
1503 | 659 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
660 } | |
661 break; | |
662 | |
663 case _adapter_prim_to_prim: | |
664 case _adapter_ref_to_prim: | |
665 // Handled completely by optimized cases. | |
666 __ stop("init_AdapterMethodHandle should not issue this"); | |
667 break; | |
668 | |
669 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
670 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
671 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
672 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
673 { | |
674 // Perform an in-place conversion to int or an int subword. | |
675 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
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676 Address value; |
1503 | 677 Address vmarg = __ argument_address(O0_argslot); |
678 bool value_left_justified = false; | |
679 | |
680 switch (ek) { | |
681 case _adapter_opt_i2i: | |
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682 value = vmarg; |
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683 break; |
1503 | 684 case _adapter_opt_l2i: |
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685 { |
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686 // just delete the extra slot |
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687 #ifdef _LP64 |
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688 // In V9, longs are given 2 64-bit slots in the interpreter, but the |
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689 // data is passed in only 1 slot. |
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690 // Keep the second slot. |
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691 __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot); |
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692 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
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693 value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value. |
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694 vmarg = Address(O0_argslot, Interpreter::stackElementSize); |
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695 #else |
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696 // Keep the first slot. |
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697 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); |
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698 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
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699 value = Address(O0_argslot, 0); |
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700 vmarg = value; |
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701 #endif |
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702 } |
1503 | 703 break; |
704 case _adapter_opt_unboxi: | |
705 { | |
706 // Load the value up from the heap. | |
707 __ ld_ptr(vmarg, O1_scratch); | |
708 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
709 #ifdef ASSERT | |
710 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
711 if (is_subword_type(BasicType(bt))) | |
712 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
713 } | |
714 #endif | |
715 __ null_check(O1_scratch, value_offset); | |
716 value = Address(O1_scratch, value_offset); | |
717 #ifdef _BIG_ENDIAN | |
718 // Values stored in objects are packed. | |
719 value_left_justified = true; | |
720 #endif | |
721 } | |
722 break; | |
723 default: | |
724 ShouldNotReachHere(); | |
725 } | |
726 | |
727 // This check is required on _BIG_ENDIAN | |
728 Register G5_vminfo = G5_index; | |
729 __ ldsw(G3_amh_conversion, G5_vminfo); | |
730 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
731 | |
732 // Original 32-bit vmdata word must be of this form: | |
733 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | | |
734 __ lduw(value, O1_scratch); | |
735 if (!value_left_justified) | |
736 __ sll(O1_scratch, G5_vminfo, O1_scratch); | |
737 Label zero_extend, done; | |
738 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo); | |
739 __ br(Assembler::zero, false, Assembler::pn, zero_extend); | |
740 __ delayed()->nop(); | |
741 | |
742 // this path is taken for int->byte, int->short | |
743 __ sra(O1_scratch, G5_vminfo, O1_scratch); | |
744 __ ba(false, done); | |
745 __ delayed()->nop(); | |
746 | |
747 __ bind(zero_extend); | |
748 // this is taken for int->char | |
749 __ srl(O1_scratch, G5_vminfo, O1_scratch); | |
750 | |
751 __ bind(done); | |
752 __ st(O1_scratch, vmarg); | |
753 | |
754 // Get the new MH: | |
1846 | 755 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
1503 | 756 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
757 } | |
758 break; | |
759 | |
760 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
761 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
762 { | |
763 // Perform an in-place int-to-long or ref-to-long conversion. | |
764 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
765 | |
766 // On big-endian machine we duplicate the slot and store the MSW | |
767 // in the first slot. | |
768 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot); | |
769 | |
770 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index); | |
771 | |
772 Address arg_lsw(O0_argslot, 0); | |
1506 | 773 Address arg_msw(O0_argslot, -Interpreter::stackElementSize); |
1503 | 774 |
775 switch (ek) { | |
776 case _adapter_opt_i2l: | |
777 { | |
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778 #ifdef _LP64 |
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779 __ ldsw(arg_lsw, O2_scratch); // Load LSW sign-extended |
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780 #else |
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781 __ ldsw(arg_lsw, O3_scratch); // Load LSW sign-extended |
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782 __ srlx(O3_scratch, BitsPerInt, O2_scratch); // Move MSW value to lower 32-bits for std |
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783 #endif |
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784 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64 |
1503 | 785 } |
786 break; | |
787 case _adapter_opt_unboxl: | |
788 { | |
789 // Load the value up from the heap. | |
790 __ ld_ptr(arg_lsw, O1_scratch); | |
791 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
792 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
793 __ null_check(O1_scratch, value_offset); | |
794 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64 | |
795 __ st_long(O2_scratch, arg_msw); | |
796 } | |
797 break; | |
798 default: | |
799 ShouldNotReachHere(); | |
800 } | |
801 | |
1846 | 802 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
1503 | 803 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
804 } | |
805 break; | |
806 | |
807 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
808 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
809 { | |
810 // perform an in-place floating primitive conversion | |
811 __ unimplemented(entry_name(ek)); | |
812 } | |
813 break; | |
814 | |
815 case _adapter_prim_to_ref: | |
816 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
817 break; | |
818 | |
819 case _adapter_swap_args: | |
820 case _adapter_rot_args: | |
821 // handled completely by optimized cases | |
822 __ stop("init_AdapterMethodHandle should not issue this"); | |
823 break; | |
824 | |
825 case _adapter_opt_swap_1: | |
826 case _adapter_opt_swap_2: | |
827 case _adapter_opt_rot_1_up: | |
828 case _adapter_opt_rot_1_down: | |
829 case _adapter_opt_rot_2_up: | |
830 case _adapter_opt_rot_2_down: | |
831 { | |
832 int swap_bytes = 0, rotate = 0; | |
833 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
834 | |
835 // 'argslot' is the position of the first argument to swap. | |
836 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
837 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
838 | |
839 // 'vminfo' is the second. | |
840 Register O1_destslot = O1_scratch; | |
841 __ ldsw(G3_amh_conversion, O1_destslot); | |
842 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
843 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot); | |
844 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot); | |
845 | |
846 if (!rotate) { | |
847 for (int i = 0; i < swap_bytes; i += wordSize) { | |
848 __ ld_ptr(Address(O0_argslot, i), O2_scratch); | |
849 __ ld_ptr(Address(O1_destslot, i), O3_scratch); | |
850 __ st_ptr(O3_scratch, Address(O0_argslot, i)); | |
851 __ st_ptr(O2_scratch, Address(O1_destslot, i)); | |
852 } | |
853 } else { | |
854 // Save the first chunk, which is going to get overwritten. | |
855 switch (swap_bytes) { | |
856 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break; | |
857 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru | |
858 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break; | |
859 default: ShouldNotReachHere(); | |
860 } | |
861 | |
862 if (rotate > 0) { | |
863 // Rorate upward. | |
864 __ sub(O0_argslot, swap_bytes, O0_argslot); | |
865 #if ASSERT | |
866 { | |
867 // Verify that argslot > destslot, by at least swap_bytes. | |
868 Label L_ok; | |
869 __ cmp(O0_argslot, O1_destslot); | |
870 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok); | |
871 __ delayed()->nop(); | |
872 __ stop("source must be above destination (upward rotation)"); | |
873 __ bind(L_ok); | |
874 } | |
875 #endif | |
876 // Work argslot down to destslot, copying contiguous data upwards. | |
877 // Pseudo-code: | |
878 // argslot = src_addr - swap_bytes | |
879 // destslot = dest_addr | |
880 // while (argslot >= destslot) { | |
881 // *(argslot + swap_bytes) = *(argslot + 0); | |
882 // argslot--; | |
883 // } | |
884 Label loop; | |
885 __ bind(loop); | |
886 __ ld_ptr(Address(O0_argslot, 0), G5_index); | |
887 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes)); | |
888 __ sub(O0_argslot, wordSize, O0_argslot); | |
889 __ cmp(O0_argslot, O1_destslot); | |
890 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop); | |
891 __ delayed()->nop(); // FILLME | |
892 } else { | |
893 __ add(O0_argslot, swap_bytes, O0_argslot); | |
894 #if ASSERT | |
895 { | |
896 // Verify that argslot < destslot, by at least swap_bytes. | |
897 Label L_ok; | |
898 __ cmp(O0_argslot, O1_destslot); | |
899 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); | |
900 __ delayed()->nop(); | |
901 __ stop("source must be above destination (upward rotation)"); | |
902 __ bind(L_ok); | |
903 } | |
904 #endif | |
905 // Work argslot up to destslot, copying contiguous data downwards. | |
906 // Pseudo-code: | |
907 // argslot = src_addr + swap_bytes | |
908 // destslot = dest_addr | |
909 // while (argslot >= destslot) { | |
910 // *(argslot - swap_bytes) = *(argslot + 0); | |
911 // argslot++; | |
912 // } | |
913 Label loop; | |
914 __ bind(loop); | |
915 __ ld_ptr(Address(O0_argslot, 0), G5_index); | |
916 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes)); | |
917 __ add(O0_argslot, wordSize, O0_argslot); | |
918 __ cmp(O0_argslot, O1_destslot); | |
919 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop); | |
920 __ delayed()->nop(); // FILLME | |
921 } | |
922 | |
923 // Store the original first chunk into the destination slot, now free. | |
924 switch (swap_bytes) { | |
925 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break; | |
926 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru | |
927 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break; | |
928 default: ShouldNotReachHere(); | |
929 } | |
930 } | |
931 | |
1846 | 932 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
1503 | 933 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
934 } | |
935 break; | |
936 | |
937 case _adapter_dup_args: | |
938 { | |
939 // 'argslot' is the position of the first argument to duplicate. | |
940 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
941 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
942 | |
943 // 'stack_move' is negative number of words to duplicate. | |
944 Register G5_stack_move = G5_index; | |
945 __ ldsw(G3_amh_conversion, G5_stack_move); | |
946 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); | |
947 | |
948 // Remember the old Gargs (argslot[0]). | |
949 Register O1_oldarg = O1_scratch; | |
950 __ mov(Gargs, O1_oldarg); | |
951 | |
952 // Move Gargs down to make room for dups. | |
953 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move); | |
954 __ add(Gargs, G5_stack_move, Gargs); | |
955 | |
956 // Compute the new Gargs (argslot[0]). | |
957 Register O2_newarg = O2_scratch; | |
958 __ mov(Gargs, O2_newarg); | |
959 | |
960 // Copy from oldarg[0...] down to newarg[0...] | |
961 // Pseude-code: | |
962 // O1_oldarg = old-Gargs | |
963 // O2_newarg = new-Gargs | |
964 // O0_argslot = argslot | |
965 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++ | |
966 Label loop; | |
967 __ bind(loop); | |
968 __ ld_ptr(Address(O0_argslot, 0), O3_scratch); | |
969 __ st_ptr(O3_scratch, Address(O2_newarg, 0)); | |
970 __ add(O0_argslot, wordSize, O0_argslot); | |
971 __ add(O2_newarg, wordSize, O2_newarg); | |
972 __ cmp(O2_newarg, O1_oldarg); | |
973 __ brx(Assembler::less, false, Assembler::pt, loop); | |
974 __ delayed()->nop(); // FILLME | |
975 | |
1846 | 976 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
1503 | 977 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
978 } | |
979 break; | |
980 | |
981 case _adapter_drop_args: | |
982 { | |
983 // 'argslot' is the position of the first argument to nuke. | |
984 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
985 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
986 | |
987 // 'stack_move' is number of words to drop. | |
988 Register G5_stack_move = G5_index; | |
989 __ ldsw(G3_amh_conversion, G5_stack_move); | |
990 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); | |
991 | |
992 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch); | |
993 | |
1846 | 994 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
1503 | 995 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
996 } | |
997 break; | |
998 | |
999 case _adapter_collect_args: | |
1000 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1001 break; | |
1002 | |
1003 case _adapter_spread_args: | |
1004 // Handled completely by optimized cases. | |
1005 __ stop("init_AdapterMethodHandle should not issue this"); | |
1006 break; | |
1007 | |
1008 case _adapter_opt_spread_0: | |
1009 case _adapter_opt_spread_1: | |
1010 case _adapter_opt_spread_more: | |
1011 { | |
1012 // spread an array out into a group of arguments | |
1013 __ unimplemented(entry_name(ek)); | |
1014 } | |
1015 break; | |
1016 | |
1017 case _adapter_flyby: | |
1018 case _adapter_ricochet: | |
1019 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1020 break; | |
1021 | |
1022 default: | |
1023 ShouldNotReachHere(); | |
1024 } | |
1025 | |
1026 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
1027 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1028 | |
1029 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
710 | 1030 } |