truffle: src/cpu/x86/vm/vtableStubs_x86

annotate src/cpu/x86/vm/vtableStubs_x86_64.cpp @ 7212:291ffc492eb6

Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/

author	Doug Simon <doug.simon@oracle.com>
date	Fri, 14 Dec 2012 14:35:13 +0100
parents	cd3d6a6b95d9
children	740e263c80c6

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 844 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 844 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 844 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	25 #include "precompiled.hpp"
7199 cd3d6a6b95d9 8003240: x86: move MacroAssembler into separate file twisti parents: 6848 diff changeset	26 #include "asm/macroAssembler.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	27 #include "code/vtableStubs.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	28 #include "interp_masm_x86_64.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	29 #include "memory/resourceArea.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	30 #include "oops/instanceKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	31 #include "oops/klassVtable.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	32 #include "runtime/sharedRuntime.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	33 #include "vmreg_x86.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	34 #ifdef COMPILER2
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	35 #include "opto/runtime.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1783 diff changeset	36 #endif
0 a61af66fc99e Initial load duke parents: diff changeset	37
a61af66fc99e Initial load duke parents: diff changeset	38 // machine-dependent part of VtableStubs: create VtableStub of correct size and
a61af66fc99e Initial load duke parents: diff changeset	39 // initialize its code
a61af66fc99e Initial load duke parents: diff changeset	40
a61af66fc99e Initial load duke parents: diff changeset	41 #define __ masm->
a61af66fc99e Initial load duke parents: diff changeset	42
a61af66fc99e Initial load duke parents: diff changeset	43 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	44 extern "C" void bad_compiled_vtable_index(JavaThread* thread,
a61af66fc99e Initial load duke parents: diff changeset	45 oop receiver,
a61af66fc99e Initial load duke parents: diff changeset	46 int index);
a61af66fc99e Initial load duke parents: diff changeset	47 #endif
a61af66fc99e Initial load duke parents: diff changeset	48
a61af66fc99e Initial load duke parents: diff changeset	49 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
a61af66fc99e Initial load duke parents: diff changeset	50 const int amd64_code_length = VtableStub::pd_code_size_limit(true);
a61af66fc99e Initial load duke parents: diff changeset	51 VtableStub* s = new(amd64_code_length) VtableStub(true, vtable_index);
a61af66fc99e Initial load duke parents: diff changeset	52 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	53 CodeBuffer cb(s->entry_point(), amd64_code_length);
a61af66fc99e Initial load duke parents: diff changeset	54 MacroAssembler* masm = new MacroAssembler(&cb);
a61af66fc99e Initial load duke parents: diff changeset	55
a61af66fc99e Initial load duke parents: diff changeset	56 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	57 if (CountCompiledCalls) {
a61af66fc99e Initial load duke parents: diff changeset	58 __ incrementl(ExternalAddress((address) SharedRuntime::nof_megamorphic_calls_addr()));
a61af66fc99e Initial load duke parents: diff changeset	59 }
a61af66fc99e Initial load duke parents: diff changeset	60 #endif
a61af66fc99e Initial load duke parents: diff changeset	61
a61af66fc99e Initial load duke parents: diff changeset	62 // get receiver (need to skip return address on top of stack)
a61af66fc99e Initial load duke parents: diff changeset	63 assert(VtableStub::receiver_location() == j_rarg0->as_VMReg(), "receiver expected in j_rarg0");
a61af66fc99e Initial load duke parents: diff changeset	64
a61af66fc99e Initial load duke parents: diff changeset	65 // Free registers (non-args) are rax, rbx
a61af66fc99e Initial load duke parents: diff changeset	66
a61af66fc99e Initial load duke parents: diff changeset	67 // get receiver klass
a61af66fc99e Initial load duke parents: diff changeset	68 address npe_addr = __ pc();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	69 __ load_klass(rax, j_rarg0);
0 a61af66fc99e Initial load duke parents: diff changeset	70
a61af66fc99e Initial load duke parents: diff changeset	71 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	72 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	73 Label L;
a61af66fc99e Initial load duke parents: diff changeset	74 // check offset vs vtable length
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	75 __ cmpl(Address(rax, InstanceKlass::vtable_length_offset() * wordSize),
0 a61af66fc99e Initial load duke parents: diff changeset	76 vtable_index * vtableEntry::size());
a61af66fc99e Initial load duke parents: diff changeset	77 __ jcc(Assembler::greater, L);
a61af66fc99e Initial load duke parents: diff changeset	78 __ movl(rbx, vtable_index);
a61af66fc99e Initial load duke parents: diff changeset	79 __ call_VM(noreg,
a61af66fc99e Initial load duke parents: diff changeset	80 CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), j_rarg0, rbx);
a61af66fc99e Initial load duke parents: diff changeset	81 __ bind(L);
a61af66fc99e Initial load duke parents: diff changeset	82 }
a61af66fc99e Initial load duke parents: diff changeset	83 #endif // PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	84
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	85 // load Method* and target address
0 a61af66fc99e Initial load duke parents: diff changeset	86 const Register method = rbx;
a61af66fc99e Initial load duke parents: diff changeset	87
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 1972 diff changeset	88 __ lookup_virtual_method(rax, vtable_index, method);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 1972 diff changeset	89
0 a61af66fc99e Initial load duke parents: diff changeset	90 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	91 Label L;
304 dc7f315e41f7 5108146: Merge i486 and amd64 cpu directories never parents: 196 diff changeset	92 __ cmpptr(method, (int32_t)NULL_WORD);
0 a61af66fc99e Initial load duke parents: diff changeset	93 __ jcc(Assembler::equal, L);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	94 __ cmpptr(Address(method, Method::from_compiled_offset()), (int32_t)NULL_WORD);
0 a61af66fc99e Initial load duke parents: diff changeset	95 __ jcc(Assembler::notZero, L);
a61af66fc99e Initial load duke parents: diff changeset	96 __ stop("Vtable entry is NULL");
a61af66fc99e Initial load duke parents: diff changeset	97 __ bind(L);
a61af66fc99e Initial load duke parents: diff changeset	98 }
a61af66fc99e Initial load duke parents: diff changeset	99 // rax: receiver klass
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	100 // rbx: Method*
0 a61af66fc99e Initial load duke parents: diff changeset	101 // rcx: receiver
a61af66fc99e Initial load duke parents: diff changeset	102 address ame_addr = __ pc();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	103 __ jmp( Address(rbx, Method::from_compiled_offset()));
0 a61af66fc99e Initial load duke parents: diff changeset	104
a61af66fc99e Initial load duke parents: diff changeset	105 __ flush();
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	106
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	107 if (PrintMiscellaneous && (WizardMode \|\| Verbose)) {
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	108 tty->print_cr("vtable #%d at "PTR_FORMAT"[%d] left over: %d",
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	109 vtable_index, s->entry_point(),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	110 (int)(s->code_end() - s->entry_point()),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	111 (int)(s->code_end() - __ pc()));
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	112 }
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	113 guarantee(__ pc() <= s->code_end(), "overflowed buffer");
709 1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	114 // shut the door on sizing bugs
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	115 int slop = 3; // 32-bit offset is this much larger than an 8-bit one
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	116 assert(vtable_index > 10 \|\| __ pc() + slop <= s->code_end(), "room for 32-bit offset");
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	117
0 a61af66fc99e Initial load duke parents: diff changeset	118 s->set_exception_points(npe_addr, ame_addr);
a61af66fc99e Initial load duke parents: diff changeset	119 return s;
a61af66fc99e Initial load duke parents: diff changeset	120 }
a61af66fc99e Initial load duke parents: diff changeset	121
a61af66fc99e Initial load duke parents: diff changeset	122
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	123 VtableStub* VtableStubs::create_itable_stub(int itable_index) {
0 a61af66fc99e Initial load duke parents: diff changeset	124 // Note well: pd_code_size_limit is the absolute minimum we can get
a61af66fc99e Initial load duke parents: diff changeset	125 // away with. If you add code here, bump the code stub size
a61af66fc99e Initial load duke parents: diff changeset	126 // returned by pd_code_size_limit!
a61af66fc99e Initial load duke parents: diff changeset	127 const int amd64_code_length = VtableStub::pd_code_size_limit(false);
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	128 VtableStub* s = new(amd64_code_length) VtableStub(false, itable_index);
0 a61af66fc99e Initial load duke parents: diff changeset	129 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	130 CodeBuffer cb(s->entry_point(), amd64_code_length);
a61af66fc99e Initial load duke parents: diff changeset	131 MacroAssembler* masm = new MacroAssembler(&cb);
a61af66fc99e Initial load duke parents: diff changeset	132
a61af66fc99e Initial load duke parents: diff changeset	133 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	134 if (CountCompiledCalls) {
a61af66fc99e Initial load duke parents: diff changeset	135 __ incrementl(ExternalAddress((address) SharedRuntime::nof_megamorphic_calls_addr()));
a61af66fc99e Initial load duke parents: diff changeset	136 }
a61af66fc99e Initial load duke parents: diff changeset	137 #endif
a61af66fc99e Initial load duke parents: diff changeset	138
a61af66fc99e Initial load duke parents: diff changeset	139 // Entry arguments:
a61af66fc99e Initial load duke parents: diff changeset	140 // rax: Interface
a61af66fc99e Initial load duke parents: diff changeset	141 // j_rarg0: Receiver
a61af66fc99e Initial load duke parents: diff changeset	142
a61af66fc99e Initial load duke parents: diff changeset	143 // Free registers (non-args) are rax (interface), rbx
a61af66fc99e Initial load duke parents: diff changeset	144
a61af66fc99e Initial load duke parents: diff changeset	145 // get receiver (need to skip return address on top of stack)
a61af66fc99e Initial load duke parents: diff changeset	146
a61af66fc99e Initial load duke parents: diff changeset	147 assert(VtableStub::receiver_location() == j_rarg0->as_VMReg(), "receiver expected in j_rarg0");
a61af66fc99e Initial load duke parents: diff changeset	148 // get receiver klass (also an implicit null-check)
a61af66fc99e Initial load duke parents: diff changeset	149 address npe_addr = __ pc();
a61af66fc99e Initial load duke parents: diff changeset	150
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	151 // Most registers are in use; we'll use rax, rbx, r10, r11
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	152 // (various calling sequences use r[cd]x, r[sd]i, r[89]; stay away from them)
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	153 __ load_klass(r10, j_rarg0);
0 a61af66fc99e Initial load duke parents: diff changeset	154
a61af66fc99e Initial load duke parents: diff changeset	155 // If we take a trap while this arg is on the stack we will not
a61af66fc99e Initial load duke parents: diff changeset	156 // be able to walk the stack properly. This is not an issue except
a61af66fc99e Initial load duke parents: diff changeset	157 // when there are mistakes in this assembly code that could generate
a61af66fc99e Initial load duke parents: diff changeset	158 // a spurious fault. Ask me how I know...
a61af66fc99e Initial load duke parents: diff changeset	159
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	160 const Register method = rbx;
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	161 Label throw_icce;
0 a61af66fc99e Initial load duke parents: diff changeset	162
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	163 // Get Method* and entrypoint for compiler
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	164 __ lookup_interface_method(// inputs: rec. class, interface, itable index
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	165 r10, rax, itable_index,
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	166 // outputs: method, scan temp. reg
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	167 method, r11,
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	168 throw_icce);
0 a61af66fc99e Initial load duke parents: diff changeset	169
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	170 // method (rbx): Method*
0 a61af66fc99e Initial load duke parents: diff changeset	171 // j_rarg0: receiver
a61af66fc99e Initial load duke parents: diff changeset	172
a61af66fc99e Initial load duke parents: diff changeset	173 #ifdef ASSERT
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	174 if (DebugVtables) {
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	175 Label L2;
304 dc7f315e41f7 5108146: Merge i486 and amd64 cpu directories never parents: 196 diff changeset	176 __ cmpptr(method, (int32_t)NULL_WORD);
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	177 __ jcc(Assembler::equal, L2);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	178 __ cmpptr(Address(method, Method::from_compiled_offset()), (int32_t)NULL_WORD);
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	179 __ jcc(Assembler::notZero, L2);
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	180 __ stop("compiler entrypoint is null");
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	181 __ bind(L2);
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	182 }
0 a61af66fc99e Initial load duke parents: diff changeset	183 #endif // ASSERT
a61af66fc99e Initial load duke parents: diff changeset	184
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	185 // rbx: Method*
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	186 // j_rarg0: receiver
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	187 address ame_addr = __ pc();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	188 __ jmp(Address(method, Method::from_compiled_offset()));
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	189
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	190 __ bind(throw_icce);
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	191 __ jump(RuntimeAddress(StubRoutines::throw_IncompatibleClassChangeError_entry()));
0 a61af66fc99e Initial load duke parents: diff changeset	192
a61af66fc99e Initial load duke parents: diff changeset	193 __ flush();
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	194
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	195 if (PrintMiscellaneous && (WizardMode \|\| Verbose)) {
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	196 tty->print_cr("itable #%d at "PTR_FORMAT"[%d] left over: %d",
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	197 itable_index, s->entry_point(),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	198 (int)(s->code_end() - s->entry_point()),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	199 (int)(s->code_end() - __ pc()));
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 304 diff changeset	200 }
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	201 guarantee(__ pc() <= s->code_end(), "overflowed buffer");
709 1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	202 // shut the door on sizing bugs
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	203 int slop = 3; // 32-bit offset is this much larger than an 8-bit one
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	204 assert(itable_index > 10 \|\| __ pc() + slop <= s->code_end(), "room for 32-bit offset");
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	205
0 a61af66fc99e Initial load duke parents: diff changeset	206 s->set_exception_points(npe_addr, ame_addr);
a61af66fc99e Initial load duke parents: diff changeset	207 return s;
a61af66fc99e Initial load duke parents: diff changeset	208 }
a61af66fc99e Initial load duke parents: diff changeset	209
a61af66fc99e Initial load duke parents: diff changeset	210 int VtableStub::pd_code_size_limit(bool is_vtable_stub) {
a61af66fc99e Initial load duke parents: diff changeset	211 if (is_vtable_stub) {
a61af66fc99e Initial load duke parents: diff changeset	212 // Vtable stub size
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	213 return (DebugVtables ? 512 : 24) + (CountCompiledCalls ? 13 : 0) +
6848 8e47bac5643a 7054512: Compress class pointers after perm gen removal roland parents: 6725 diff changeset	214 (UseCompressedKlassPointers ? 16 : 0); // 1 leaq can be 3 bytes + 1 long
0 a61af66fc99e Initial load duke parents: diff changeset	215 } else {
a61af66fc99e Initial load duke parents: diff changeset	216 // Itable stub size
1783 d5d065957597 6953144: Tiered compilation iveresov parents: 1552 diff changeset	217 return (DebugVtables ? 512 : 74) + (CountCompiledCalls ? 13 : 0) +
6848 8e47bac5643a 7054512: Compress class pointers after perm gen removal roland parents: 6725 diff changeset	218 (UseCompressedKlassPointers ? 32 : 0); // 2 leaqs
0 a61af66fc99e Initial load duke parents: diff changeset	219 }
709 1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	220 // In order to tune these parameters, run the JVM with VM options
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	221 // +PrintMiscellaneous and +WizardMode to see information about
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	222 // actual itable stubs. Look for lines like this:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	223 // itable #1 at 0x5551212[71] left over: 3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	224 // Reduce the constants so that the "left over" number is >=3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	225 // for the common cases.
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	226 // Do not aim at a left-over number of zero, because a
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	227 // large vtable or itable index (>= 32) will require a 32-bit
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	228 // immediate displacement instead of an 8-bit one.
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	229 //
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	230 // The JVM98 app. _202_jess has a megamorphic interface call.
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	231 // The itable code looks like this:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	232 // Decoding VtableStub itbl[1]@12
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	233 // mov 0x8(%rsi),%r10
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	234 // mov 0x198(%r10),%r11d
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	235 // lea 0x218(%r10,%r11,8),%r11
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	236 // lea 0x8(%r10),%r10
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	237 // mov (%r11),%rbx
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	238 // cmp %rbx,%rax
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	239 // je success
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	240 // loop:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	241 // test %rbx,%rbx
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	242 // je throw_icce
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	243 // add $0x10,%r11
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	244 // mov (%r11),%rbx
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	245 // cmp %rbx,%rax
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	246 // jne loop
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	247 // success:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	248 // mov 0x8(%r11),%r11d
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	249 // mov (%r10,%r11,1),%rbx
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	250 // jmpq *0x60(%rbx)
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	251 // throw_icce:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 623 diff changeset	252 // jmpq throw_ICCE_entry
0 a61af66fc99e Initial load duke parents: diff changeset	253 }
a61af66fc99e Initial load duke parents: diff changeset	254
a61af66fc99e Initial load duke parents: diff changeset	255 int VtableStub::pd_code_alignment() {
a61af66fc99e Initial load duke parents: diff changeset	256 return wordSize;
a61af66fc99e Initial load duke parents: diff changeset	257 }

Mercurial > hg > truffle

annotate src/cpu/x86/vm/vtableStubs_x86_64.cpp @ 7212:291ffc492eb6