truffle: src/cpu/sparc/vm/vtableStubs

annotate src/cpu/sparc/vm/vtableStubs_sparc.cpp @ 12056:740e263c80c6

8003424: Enable Class Data Sharing for CompressedOops 8016729: ObjectAlignmentInBytes=16 now forces the use of heap based compressed oops 8005933: The -Xshare:auto option is ignored for -server Summary: Move klass metaspace above the heap and support CDS with compressed klass ptrs. Reviewed-by: coleenp, kvn, mgerdin, tschatzl, stefank

author	hseigel
date	Thu, 15 Aug 2013 20:04:10 -0400
parents	f0c2369fda5a
children	7944aba7ba41

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
12056 740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops hseigel parents: 7204 diff changeset	2 * Copyright (c) 1997, 2013, 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: 727 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 727 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: 727 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: 1552 diff changeset	25 #include "precompiled.hpp"
7204 f0c2369fda5a 8003250: SPARC: move MacroAssembler into separate file twisti parents: 6848 diff changeset	26 #include "asm/macroAssembler.inline.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27 #include "code/vtableStubs.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "interp_masm_sparc.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "memory/resourceArea.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30 #include "oops/instanceKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	31 #include "oops/klassVtable.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	32 #include "runtime/sharedRuntime.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	33 #include "vmreg_sparc.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	34 #ifdef COMPILER2
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	35 #include "opto/runtime.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 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
a61af66fc99e Initial load duke parents: diff changeset	44 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	45 extern "C" void bad_compiled_vtable_index(JavaThread* thread, oopDesc* receiver, int index);
a61af66fc99e Initial load duke parents: diff changeset	46 #endif
a61af66fc99e Initial load duke parents: diff changeset	47
a61af66fc99e Initial load duke parents: diff changeset	48
a61af66fc99e Initial load duke parents: diff changeset	49 // Used by compiler only; may use only caller saved, non-argument registers
a61af66fc99e Initial load duke parents: diff changeset	50 // NOTE: %%%% if any change is made to this stub make sure that the function
a61af66fc99e Initial load duke parents: diff changeset	51 // pd_code_size_limit is changed to ensure the correct size for VtableStub
a61af66fc99e Initial load duke parents: diff changeset	52 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
a61af66fc99e Initial load duke parents: diff changeset	53 const int sparc_code_length = VtableStub::pd_code_size_limit(true);
a61af66fc99e Initial load duke parents: diff changeset	54 VtableStub* s = new(sparc_code_length) VtableStub(true, vtable_index);
a61af66fc99e Initial load duke parents: diff changeset	55 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	56 CodeBuffer cb(s->entry_point(), sparc_code_length);
a61af66fc99e Initial load duke parents: diff changeset	57 MacroAssembler* masm = new MacroAssembler(&cb);
a61af66fc99e Initial load duke parents: diff changeset	58
a61af66fc99e Initial load duke parents: diff changeset	59 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	60 if (CountCompiledCalls) {
727 6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	61 __ inc_counter(SharedRuntime::nof_megamorphic_calls_addr(), G5, G3_scratch);
0 a61af66fc99e Initial load duke parents: diff changeset	62 }
a61af66fc99e Initial load duke parents: diff changeset	63 #endif /* PRODUCT */
a61af66fc99e Initial load duke parents: diff changeset	64
a61af66fc99e Initial load duke parents: diff changeset	65 assert(VtableStub::receiver_location() == O0->as_VMReg(), "receiver expected in O0");
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(O0, G3_scratch);
0 a61af66fc99e Initial load duke parents: diff changeset	70
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	71 // set Method* (in case of interpreted method), and destination address
0 a61af66fc99e Initial load duke parents: diff changeset	72 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	73 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	74 Label L;
a61af66fc99e Initial load duke parents: diff changeset	75 // check offset vs vtable length
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	76 __ ld(G3_scratch, InstanceKlass::vtable_length_offset()*wordSize, G5);
3839 3d42f82cd811 7063628: Use cbcond on T4 kvn parents: 1972 diff changeset	77 __ cmp_and_br_short(G5, vtable_index*vtableEntry::size(), Assembler::greaterUnsigned, Assembler::pt, L);
0 a61af66fc99e Initial load duke parents: diff changeset	78 __ set(vtable_index, O2);
a61af66fc99e Initial load duke parents: diff changeset	79 __ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), O0, O2);
a61af66fc99e Initial load duke parents: diff changeset	80 __ bind(L);
a61af66fc99e Initial load duke parents: diff changeset	81 }
a61af66fc99e Initial load duke parents: diff changeset	82 #endif
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4114 diff changeset	83
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4114 diff changeset	84 __ lookup_virtual_method(G3_scratch, vtable_index, G5_method);
0 a61af66fc99e Initial load duke parents: diff changeset	85
a61af66fc99e Initial load duke parents: diff changeset	86 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	87 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	88 Label L;
3839 3d42f82cd811 7063628: Use cbcond on T4 kvn parents: 1972 diff changeset	89 __ br_notnull_short(G5_method, Assembler::pt, L);
0 a61af66fc99e Initial load duke parents: diff changeset	90 __ stop("Vtable entry is ZERO");
a61af66fc99e Initial load duke parents: diff changeset	91 __ bind(L);
a61af66fc99e Initial load duke parents: diff changeset	92 }
a61af66fc99e Initial load duke parents: diff changeset	93 #endif
a61af66fc99e Initial load duke parents: diff changeset	94
a61af66fc99e Initial load duke parents: diff changeset	95 address ame_addr = __ pc(); // if the vtable entry is null, the method is abstract
a61af66fc99e Initial load duke parents: diff changeset	96 // NOTE: for vtable dispatches, the vtable entry will never be null.
a61af66fc99e Initial load duke parents: diff changeset	97
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	98 __ ld_ptr(G5_method, in_bytes(Method::from_compiled_offset()), G3_scratch);
0 a61af66fc99e Initial load duke parents: diff changeset	99
a61af66fc99e Initial load duke parents: diff changeset	100 // jump to target (either compiled code or c2iadapter)
a61af66fc99e Initial load duke parents: diff changeset	101 __ JMP(G3_scratch, 0);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	102 // load Method* (in case we call c2iadapter)
0 a61af66fc99e Initial load duke parents: diff changeset	103 __ delayed()->nop();
a61af66fc99e Initial load duke parents: diff changeset	104
a61af66fc99e Initial load duke parents: diff changeset	105 masm->flush();
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	106
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	107 if (PrintMiscellaneous && (WizardMode \|\| Verbose)) {
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 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: 196 diff changeset	109 vtable_index, s->entry_point(),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	110 (int)(s->code_end() - s->entry_point()),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	111 (int)(s->code_end() - __ pc()));
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	112 }
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 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: 642 diff changeset	114 // shut the door on sizing bugs
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	115 int slop = 2*BytesPerInstWord; // 32-bit offset is this much larger than a 13-bit one
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	116 assert(vtable_index > 10 \|\| __ pc() + slop <= s->code_end(), "room for sethi;add");
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 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
a61af66fc99e Initial load duke parents: diff changeset	123 // NOTE: %%%% if any change is made to this stub make sure that the function
a61af66fc99e Initial load duke parents: diff changeset	124 // pd_code_size_limit is changed to ensure the correct size for VtableStub
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	125 VtableStub* VtableStubs::create_itable_stub(int itable_index) {
0 a61af66fc99e Initial load duke parents: diff changeset	126 const int sparc_code_length = VtableStub::pd_code_size_limit(false);
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	127 VtableStub* s = new(sparc_code_length) VtableStub(false, itable_index);
0 a61af66fc99e Initial load duke parents: diff changeset	128 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	129 CodeBuffer cb(s->entry_point(), sparc_code_length);
a61af66fc99e Initial load duke parents: diff changeset	130 MacroAssembler* masm = new MacroAssembler(&cb);
a61af66fc99e Initial load duke parents: diff changeset	131
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	132 Register G3_Klass = G3_scratch;
0 a61af66fc99e Initial load duke parents: diff changeset	133 Register G5_interface = G5; // Passed in as an argument
a61af66fc99e Initial load duke parents: diff changeset	134 Label search;
a61af66fc99e Initial load duke parents: diff changeset	135
a61af66fc99e Initial load duke parents: diff changeset	136 // Entry arguments:
a61af66fc99e Initial load duke parents: diff changeset	137 // G5_interface: Interface
a61af66fc99e Initial load duke parents: diff changeset	138 // O0: Receiver
a61af66fc99e Initial load duke parents: diff changeset	139 assert(VtableStub::receiver_location() == O0->as_VMReg(), "receiver expected in O0");
a61af66fc99e Initial load duke parents: diff changeset	140
a61af66fc99e Initial load duke parents: diff changeset	141 // get receiver klass (also an implicit null-check)
a61af66fc99e Initial load duke parents: diff changeset	142 address npe_addr = __ pc();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	143 __ load_klass(O0, G3_Klass);
0 a61af66fc99e Initial load duke parents: diff changeset	144
a61af66fc99e Initial load duke parents: diff changeset	145 // Push a new window to get some temp registers. This chops the head of all
a61af66fc99e Initial load duke parents: diff changeset	146 // my 64-bit %o registers in the LION build, but this is OK because no longs
a61af66fc99e Initial load duke parents: diff changeset	147 // are passed in the %o registers. Instead, longs are passed in G1 and G4
a61af66fc99e Initial load duke parents: diff changeset	148 // and so those registers are not available here.
a61af66fc99e Initial load duke parents: diff changeset	149 __ save(SP,-frame::register_save_words*wordSize,SP);
a61af66fc99e Initial load duke parents: diff changeset	150
a61af66fc99e Initial load duke parents: diff changeset	151 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	152 if (CountCompiledCalls) {
727 6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	153 __ inc_counter(SharedRuntime::nof_megamorphic_calls_addr(), L0, L1);
0 a61af66fc99e Initial load duke parents: diff changeset	154 }
a61af66fc99e Initial load duke parents: diff changeset	155 #endif /* PRODUCT */
a61af66fc99e Initial load duke parents: diff changeset	156
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	157 Label throw_icce;
0 a61af66fc99e Initial load duke parents: diff changeset	158
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	159 Register L5_method = L5;
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	160 __ lookup_interface_method(// inputs: rec. class, interface, itable index
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	161 G3_Klass, G5_interface, itable_index,
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	162 // outputs: method, scan temp. reg
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	163 L5_method, L2, L3,
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	164 throw_icce);
0 a61af66fc99e Initial load duke parents: diff changeset	165
a61af66fc99e Initial load duke parents: diff changeset	166 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	167 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	168 Label L01;
3839 3d42f82cd811 7063628: Use cbcond on T4 kvn parents: 1972 diff changeset	169 __ br_notnull_short(L5_method, Assembler::pt, L01);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	170 __ stop("Method* is null");
0 a61af66fc99e Initial load duke parents: diff changeset	171 __ bind(L01);
a61af66fc99e Initial load duke parents: diff changeset	172 }
a61af66fc99e Initial load duke parents: diff changeset	173 #endif
a61af66fc99e Initial load duke parents: diff changeset	174
a61af66fc99e Initial load duke parents: diff changeset	175 // If the following load is through a NULL pointer, we'll take an OS
a61af66fc99e Initial load duke parents: diff changeset	176 // exception that should translate into an AbstractMethodError. We need the
a61af66fc99e Initial load duke parents: diff changeset	177 // window count to be correct at that time.
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	178 __ restore(L5_method, 0, G5_method);
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	179 // Restore registers before the AME point.
0 a61af66fc99e Initial load duke parents: diff changeset	180
a61af66fc99e Initial load duke parents: diff changeset	181 address ame_addr = __ pc(); // if the vtable entry is null, the method is abstract
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	182 __ ld_ptr(G5_method, in_bytes(Method::from_compiled_offset()), G3_scratch);
0 a61af66fc99e Initial load duke parents: diff changeset	183
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	184 // G5_method: Method*
0 a61af66fc99e Initial load duke parents: diff changeset	185 // O0: Receiver
a61af66fc99e Initial load duke parents: diff changeset	186 // G3_scratch: entry point
a61af66fc99e Initial load duke parents: diff changeset	187 __ JMP(G3_scratch, 0);
a61af66fc99e Initial load duke parents: diff changeset	188 __ delayed()->nop();
a61af66fc99e Initial load duke parents: diff changeset	189
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	190 __ bind(throw_icce);
727 6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	191 AddressLiteral icce(StubRoutines::throw_IncompatibleClassChangeError_entry());
6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	192 __ jump_to(icce, G3_scratch);
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	193 __ delayed()->restore();
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	194
0 a61af66fc99e Initial load duke parents: diff changeset	195 masm->flush();
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	196
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	197 if (PrintMiscellaneous && (WizardMode \|\| Verbose)) {
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	198 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: 196 diff changeset	199 itable_index, s->entry_point(),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	200 (int)(s->code_end() - s->entry_point()),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	201 (int)(s->code_end() - __ pc()));
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	202 }
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	203 guarantee(__ pc() <= s->code_end(), "overflowed buffer");
709 1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	204 // shut the door on sizing bugs
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	205 int slop = 2*BytesPerInstWord; // 32-bit offset is this much larger than a 13-bit one
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	206 assert(itable_index > 10 \|\| __ pc() + slop <= s->code_end(), "room for sethi;add");
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	207
0 a61af66fc99e Initial load duke parents: diff changeset	208 s->set_exception_points(npe_addr, ame_addr);
a61af66fc99e Initial load duke parents: diff changeset	209 return s;
a61af66fc99e Initial load duke parents: diff changeset	210 }
a61af66fc99e Initial load duke parents: diff changeset	211
a61af66fc99e Initial load duke parents: diff changeset	212
a61af66fc99e Initial load duke parents: diff changeset	213 int VtableStub::pd_code_size_limit(bool is_vtable_stub) {
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	214 if (TraceJumps \|\| DebugVtables \|\| CountCompiledCalls \|\| VerifyOops) return 1000;
0 a61af66fc99e Initial load duke parents: diff changeset	215 else {
a61af66fc99e Initial load duke parents: diff changeset	216 const int slop = 2*BytesPerInstWord; // sethi;add (needed for long offsets)
a61af66fc99e Initial load duke parents: diff changeset	217 if (is_vtable_stub) {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	218 // ld;ld;ld,jmp,nop
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	219 const int basic = 5*BytesPerInstWord +
642 660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 623 diff changeset	220 // shift;add for load_klass (only shift with zero heap based)
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	221 (UseCompressedKlassPointers ?
12056 740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops hseigel parents: 7204 diff changeset	222 MacroAssembler::instr_size_for_decode_klass_not_null() : 0);
0 a61af66fc99e Initial load duke parents: diff changeset	223 return basic + slop;
a61af66fc99e Initial load duke parents: diff changeset	224 } else {
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	225 const int basic = (28 LP64_ONLY(+ 6)) * BytesPerInstWord +
642 660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 623 diff changeset	226 // shift;add for load_klass (only shift with zero heap based)
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	227 (UseCompressedKlassPointers ?
12056 740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops hseigel parents: 7204 diff changeset	228 MacroAssembler::instr_size_for_decode_klass_not_null() : 0);
0 a61af66fc99e Initial load duke parents: diff changeset	229 return (basic + slop);
a61af66fc99e Initial load duke parents: diff changeset	230 }
a61af66fc99e Initial load duke parents: diff changeset	231 }
709 1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	232
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	233 // 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: 642 diff changeset	234 // +PrintMiscellaneous and +WizardMode to see information about
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	235 // actual itable stubs. Look for lines like this:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	236 // itable #1 at 0x5551212[116] left over: 8
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	237 // Reduce the constants so that the "left over" number is 8
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	238 // Do not aim at a left-over number of zero, because a very
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	239 // large vtable or itable offset (> 4K) will require an extra
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	240 // sethi/or pair of instructions.
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	241 //
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	242 // The JVM98 app. _202_jess has a megamorphic interface call.
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	243 // The itable code looks like this:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	244 // Decoding VtableStub itbl[1]@16
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	245 // ld [ %o0 + 4 ], %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	246 // save %sp, -64, %sp
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	247 // ld [ %g3 + 0xe8 ], %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	248 // sll %l2, 2, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	249 // add %l2, 0x134, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	250 // and %l2, -8, %l2 ! NOT_LP64 only
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	251 // add %g3, %l2, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	252 // add %g3, 4, %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	253 // ld [ %l2 ], %l5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	254 // brz,pn %l5, throw_icce
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	255 // cmp %l5, %g5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	256 // be %icc, success
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	257 // add %l2, 8, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	258 // loop:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	259 // ld [ %l2 ], %l5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	260 // brz,pn %l5, throw_icce
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	261 // cmp %l5, %g5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	262 // bne,pn %icc, loop
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	263 // add %l2, 8, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	264 // success:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	265 // ld [ %l2 + -4 ], %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	266 // ld [ %g3 + %l2 ], %l5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	267 // restore %l5, 0, %g5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	268 // ld [ %g5 + 0x44 ], %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	269 // jmp %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	270 // nop
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	271 // throw_icce:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	272 // sethi %hi(throw_ICCE_entry), %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	273 // ! 5 more instructions here, LP64_ONLY
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	274 // jmp %g3 + %lo(throw_ICCE_entry)
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	275 // restore
0 a61af66fc99e Initial load duke parents: diff changeset	276 }
a61af66fc99e Initial load duke parents: diff changeset	277
a61af66fc99e Initial load duke parents: diff changeset	278
a61af66fc99e Initial load duke parents: diff changeset	279 int VtableStub::pd_code_alignment() {
a61af66fc99e Initial load duke parents: diff changeset	280 // UltraSPARC cache line size is 8 instructions:
a61af66fc99e Initial load duke parents: diff changeset	281 const unsigned int icache_line_size = 32;
a61af66fc99e Initial load duke parents: diff changeset	282 return icache_line_size;
a61af66fc99e Initial load duke parents: diff changeset	283 }

Mercurial > hg > truffle

annotate src/cpu/sparc/vm/vtableStubs_sparc.cpp @ 12056:740e263c80c6