truffle: src/cpu/sparc/vm/vtableStubs

annotate src/cpu/sparc/vm/vtableStubs_sparc.cpp @ 4114:6729bbc1fcd6

7003454: order constants in constant table by number of references in code Reviewed-by: kvn, never, bdelsart

author	twisti
date	Wed, 16 Nov 2011 01:39:50 -0800
parents	3d42f82cd811
children	1d7922586cf6

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
4114 6729bbc1fcd6 7003454: order constants in constant table by number of references in code twisti parents: 3839 diff changeset	2 * Copyright (c) 1997, 2011, 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"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #include "asm/assembler.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27 #include "assembler_sparc.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "code/vtableStubs.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "interp_masm_sparc.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30 #include "memory/resourceArea.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	31 #include "oops/instanceKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	32 #include "oops/klassVtable.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	33 #include "runtime/sharedRuntime.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	34 #include "vmreg_sparc.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	35 #ifdef COMPILER2
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	36 #include "opto/runtime.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	37 #endif
0 a61af66fc99e Initial load duke parents: diff changeset	38
a61af66fc99e Initial load duke parents: diff changeset	39 // machine-dependent part of VtableStubs: create vtableStub of correct size and
a61af66fc99e Initial load duke parents: diff changeset	40 // initialize its code
a61af66fc99e Initial load duke parents: diff changeset	41
a61af66fc99e Initial load duke parents: diff changeset	42 #define __ masm->
a61af66fc99e Initial load duke parents: diff changeset	43
a61af66fc99e Initial load duke parents: diff changeset	44
a61af66fc99e Initial load duke parents: diff changeset	45 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	46 extern "C" void bad_compiled_vtable_index(JavaThread* thread, oopDesc* receiver, 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
a61af66fc99e Initial load duke parents: diff changeset	50 // Used by compiler only; may use only caller saved, non-argument registers
a61af66fc99e Initial load duke parents: diff changeset	51 // NOTE: %%%% if any change is made to this stub make sure that the function
a61af66fc99e Initial load duke parents: diff changeset	52 // pd_code_size_limit is changed to ensure the correct size for VtableStub
a61af66fc99e Initial load duke parents: diff changeset	53 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
a61af66fc99e Initial load duke parents: diff changeset	54 const int sparc_code_length = VtableStub::pd_code_size_limit(true);
a61af66fc99e Initial load duke parents: diff changeset	55 VtableStub* s = new(sparc_code_length) VtableStub(true, vtable_index);
a61af66fc99e Initial load duke parents: diff changeset	56 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	57 CodeBuffer cb(s->entry_point(), sparc_code_length);
a61af66fc99e Initial load duke parents: diff changeset	58 MacroAssembler* masm = new MacroAssembler(&cb);
a61af66fc99e Initial load duke parents: diff changeset	59
a61af66fc99e Initial load duke parents: diff changeset	60 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	61 if (CountCompiledCalls) {
727 6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	62 __ inc_counter(SharedRuntime::nof_megamorphic_calls_addr(), G5, G3_scratch);
0 a61af66fc99e Initial load duke parents: diff changeset	63 }
a61af66fc99e Initial load duke parents: diff changeset	64 #endif /* PRODUCT */
a61af66fc99e Initial load duke parents: diff changeset	65
a61af66fc99e Initial load duke parents: diff changeset	66 assert(VtableStub::receiver_location() == O0->as_VMReg(), "receiver expected in O0");
a61af66fc99e Initial load duke parents: diff changeset	67
a61af66fc99e Initial load duke parents: diff changeset	68 // get receiver klass
a61af66fc99e Initial load duke parents: diff changeset	69 address npe_addr = __ pc();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	70 __ load_klass(O0, G3_scratch);
0 a61af66fc99e Initial load duke parents: diff changeset	71
a61af66fc99e Initial load duke parents: diff changeset	72 // set methodOop (in case of interpreted method), and destination address
a61af66fc99e Initial load duke parents: diff changeset	73 int entry_offset = instanceKlass::vtable_start_offset() + vtable_index*vtableEntry::size();
a61af66fc99e Initial load duke parents: diff changeset	74 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	75 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	76 Label L;
a61af66fc99e Initial load duke parents: diff changeset	77 // check offset vs vtable length
a61af66fc99e Initial load duke parents: diff changeset	78 __ ld(G3_scratch, instanceKlass::vtable_length_offset()*wordSize, G5);
3839 3d42f82cd811 7063628: Use cbcond on T4 kvn parents: 1972 diff changeset	79 __ cmp_and_br_short(G5, vtable_index*vtableEntry::size(), Assembler::greaterUnsigned, Assembler::pt, L);
0 a61af66fc99e Initial load duke parents: diff changeset	80 __ set(vtable_index, O2);
a61af66fc99e Initial load duke parents: diff changeset	81 __ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), O0, O2);
a61af66fc99e Initial load duke parents: diff changeset	82 __ bind(L);
a61af66fc99e Initial load duke parents: diff changeset	83 }
a61af66fc99e Initial load duke parents: diff changeset	84 #endif
a61af66fc99e Initial load duke parents: diff changeset	85 int v_off = entry_offset*wordSize + vtableEntry::method_offset_in_bytes();
4114 6729bbc1fcd6 7003454: order constants in constant table by number of references in code twisti parents: 3839 diff changeset	86 if (Assembler::is_simm13(v_off)) {
0 a61af66fc99e Initial load duke parents: diff changeset	87 __ ld_ptr(G3, v_off, G5_method);
a61af66fc99e Initial load duke parents: diff changeset	88 } else {
a61af66fc99e Initial load duke parents: diff changeset	89 __ set(v_off,G5);
a61af66fc99e Initial load duke parents: diff changeset	90 __ ld_ptr(G3, G5, G5_method);
a61af66fc99e Initial load duke parents: diff changeset	91 }
a61af66fc99e Initial load duke parents: diff changeset	92
a61af66fc99e Initial load duke parents: diff changeset	93 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	94 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	95 Label L;
3839 3d42f82cd811 7063628: Use cbcond on T4 kvn parents: 1972 diff changeset	96 __ br_notnull_short(G5_method, Assembler::pt, L);
0 a61af66fc99e Initial load duke parents: diff changeset	97 __ stop("Vtable entry is ZERO");
a61af66fc99e Initial load duke parents: diff changeset	98 __ bind(L);
a61af66fc99e Initial load duke parents: diff changeset	99 }
a61af66fc99e Initial load duke parents: diff changeset	100 #endif
a61af66fc99e Initial load duke parents: diff changeset	101
a61af66fc99e Initial load duke parents: diff changeset	102 address ame_addr = __ pc(); // if the vtable entry is null, the method is abstract
a61af66fc99e Initial load duke parents: diff changeset	103 // NOTE: for vtable dispatches, the vtable entry will never be null.
a61af66fc99e Initial load duke parents: diff changeset	104
a61af66fc99e Initial load duke parents: diff changeset	105 __ ld_ptr(G5_method, in_bytes(methodOopDesc::from_compiled_offset()), G3_scratch);
a61af66fc99e Initial load duke parents: diff changeset	106
a61af66fc99e Initial load duke parents: diff changeset	107 // jump to target (either compiled code or c2iadapter)
a61af66fc99e Initial load duke parents: diff changeset	108 __ JMP(G3_scratch, 0);
a61af66fc99e Initial load duke parents: diff changeset	109 // load methodOop (in case we call c2iadapter)
a61af66fc99e Initial load duke parents: diff changeset	110 __ delayed()->nop();
a61af66fc99e Initial load duke parents: diff changeset	111
a61af66fc99e Initial load duke parents: diff changeset	112 masm->flush();
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	113
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	114 if (PrintMiscellaneous && (WizardMode \|\| Verbose)) {
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	115 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	116 vtable_index, s->entry_point(),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	117 (int)(s->code_end() - s->entry_point()),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	118 (int)(s->code_end() - __ pc()));
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	119 }
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	120 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	121 // shut the door on sizing bugs
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	122 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	123 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	124
0 a61af66fc99e Initial load duke parents: diff changeset	125 s->set_exception_points(npe_addr, ame_addr);
a61af66fc99e Initial load duke parents: diff changeset	126 return s;
a61af66fc99e Initial load duke parents: diff changeset	127 }
a61af66fc99e Initial load duke parents: diff changeset	128
a61af66fc99e Initial load duke parents: diff changeset	129
a61af66fc99e Initial load duke parents: diff changeset	130 // NOTE: %%%% if any change is made to this stub make sure that the function
a61af66fc99e Initial load duke parents: diff changeset	131 // 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	132 VtableStub* VtableStubs::create_itable_stub(int itable_index) {
0 a61af66fc99e Initial load duke parents: diff changeset	133 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	134 VtableStub* s = new(sparc_code_length) VtableStub(false, itable_index);
0 a61af66fc99e Initial load duke parents: diff changeset	135 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	136 CodeBuffer cb(s->entry_point(), sparc_code_length);
a61af66fc99e Initial load duke parents: diff changeset	137 MacroAssembler* masm = new MacroAssembler(&cb);
a61af66fc99e Initial load duke parents: diff changeset	138
a61af66fc99e Initial load duke parents: diff changeset	139 Register G3_klassOop = G3_scratch;
a61af66fc99e Initial load duke parents: diff changeset	140 Register G5_interface = G5; // Passed in as an argument
a61af66fc99e Initial load duke parents: diff changeset	141 Label search;
a61af66fc99e Initial load duke parents: diff changeset	142
a61af66fc99e Initial load duke parents: diff changeset	143 // Entry arguments:
a61af66fc99e Initial load duke parents: diff changeset	144 // G5_interface: Interface
a61af66fc99e Initial load duke parents: diff changeset	145 // O0: Receiver
a61af66fc99e Initial load duke parents: diff changeset	146 assert(VtableStub::receiver_location() == O0->as_VMReg(), "receiver expected in O0");
a61af66fc99e Initial load duke parents: diff changeset	147
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();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	150 __ load_klass(O0, G3_klassOop);
0 a61af66fc99e Initial load duke parents: diff changeset	151 __ verify_oop(G3_klassOop);
a61af66fc99e Initial load duke parents: diff changeset	152
a61af66fc99e Initial load duke parents: diff changeset	153 // Push a new window to get some temp registers. This chops the head of all
a61af66fc99e Initial load duke parents: diff changeset	154 // my 64-bit %o registers in the LION build, but this is OK because no longs
a61af66fc99e Initial load duke parents: diff changeset	155 // are passed in the %o registers. Instead, longs are passed in G1 and G4
a61af66fc99e Initial load duke parents: diff changeset	156 // and so those registers are not available here.
a61af66fc99e Initial load duke parents: diff changeset	157 __ save(SP,-frame::register_save_words*wordSize,SP);
a61af66fc99e Initial load duke parents: diff changeset	158
a61af66fc99e Initial load duke parents: diff changeset	159 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	160 if (CountCompiledCalls) {
727 6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	161 __ inc_counter(SharedRuntime::nof_megamorphic_calls_addr(), L0, L1);
0 a61af66fc99e Initial load duke parents: diff changeset	162 }
a61af66fc99e Initial load duke parents: diff changeset	163 #endif /* PRODUCT */
a61af66fc99e Initial load duke parents: diff changeset	164
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	165 Label throw_icce;
0 a61af66fc99e Initial load duke parents: diff changeset	166
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	167 Register L5_method = L5;
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	168 __ lookup_interface_method(// inputs: rec. class, interface, itable index
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	169 G3_klassOop, G5_interface, itable_index,
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	170 // outputs: method, scan temp. reg
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	171 L5_method, L2, L3,
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	172 throw_icce);
0 a61af66fc99e Initial load duke parents: diff changeset	173
a61af66fc99e Initial load duke parents: diff changeset	174 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	175 if (DebugVtables) {
a61af66fc99e Initial load duke parents: diff changeset	176 Label L01;
3839 3d42f82cd811 7063628: Use cbcond on T4 kvn parents: 1972 diff changeset	177 __ br_notnull_short(L5_method, Assembler::pt, L01);
0 a61af66fc99e Initial load duke parents: diff changeset	178 __ stop("methodOop is null");
a61af66fc99e Initial load duke parents: diff changeset	179 __ bind(L01);
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	180 __ verify_oop(L5_method);
0 a61af66fc99e Initial load duke parents: diff changeset	181 }
a61af66fc99e Initial load duke parents: diff changeset	182 #endif
a61af66fc99e Initial load duke parents: diff changeset	183
a61af66fc99e Initial load duke parents: diff changeset	184 // If the following load is through a NULL pointer, we'll take an OS
a61af66fc99e Initial load duke parents: diff changeset	185 // exception that should translate into an AbstractMethodError. We need the
a61af66fc99e Initial load duke parents: diff changeset	186 // 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	187 __ restore(L5_method, 0, G5_method);
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	188 // Restore registers before the AME point.
0 a61af66fc99e Initial load duke parents: diff changeset	189
a61af66fc99e Initial load duke parents: diff changeset	190 address ame_addr = __ pc(); // if the vtable entry is null, the method is abstract
a61af66fc99e Initial load duke parents: diff changeset	191 __ ld_ptr(G5_method, in_bytes(methodOopDesc::from_compiled_offset()), G3_scratch);
a61af66fc99e Initial load duke parents: diff changeset	192
a61af66fc99e Initial load duke parents: diff changeset	193 // G5_method: methodOop
a61af66fc99e Initial load duke parents: diff changeset	194 // O0: Receiver
a61af66fc99e Initial load duke parents: diff changeset	195 // G3_scratch: entry point
a61af66fc99e Initial load duke parents: diff changeset	196 __ JMP(G3_scratch, 0);
a61af66fc99e Initial load duke parents: diff changeset	197 __ delayed()->nop();
a61af66fc99e Initial load duke parents: diff changeset	198
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	199 __ bind(throw_icce);
727 6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	200 AddressLiteral icce(StubRoutines::throw_IncompatibleClassChangeError_entry());
6b2273dd6fa9 6822110: Add AddressLiteral class on SPARC twisti parents: 709 diff changeset	201 __ jump_to(icce, G3_scratch);
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	202 __ delayed()->restore();
f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	203
0 a61af66fc99e Initial load duke parents: diff changeset	204 masm->flush();
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	205
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	206 if (PrintMiscellaneous && (WizardMode \|\| Verbose)) {
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	207 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	208 itable_index, s->entry_point(),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	209 (int)(s->code_end() - s->entry_point()),
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	210 (int)(s->code_end() - __ pc()));
9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	211 }
16 f8236e79048a 6664627: Merge changes made only in hotspot 11 forward to jdk 7 dcubed parents: 0 diff changeset	212 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	213 // shut the door on sizing bugs
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	214 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	215 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	216
0 a61af66fc99e Initial load duke parents: diff changeset	217 s->set_exception_points(npe_addr, ame_addr);
a61af66fc99e Initial load duke parents: diff changeset	218 return s;
a61af66fc99e Initial load duke parents: diff changeset	219 }
a61af66fc99e Initial load duke parents: diff changeset	220
a61af66fc99e Initial load duke parents: diff changeset	221
a61af66fc99e Initial load duke parents: diff changeset	222 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	223 if (TraceJumps \|\| DebugVtables \|\| CountCompiledCalls \|\| VerifyOops) return 1000;
0 a61af66fc99e Initial load duke parents: diff changeset	224 else {
a61af66fc99e Initial load duke parents: diff changeset	225 const int slop = 2*BytesPerInstWord; // sethi;add (needed for long offsets)
a61af66fc99e Initial load duke parents: diff changeset	226 if (is_vtable_stub) {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	227 // ld;ld;ld,jmp,nop
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 16 diff changeset	228 const int basic = 5*BytesPerInstWord +
642 660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 623 diff changeset	229 // shift;add for load_klass (only shift with zero heap based)
660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 623 diff changeset	230 (UseCompressedOops ?
660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 623 diff changeset	231 ((Universe::narrow_oop_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0);
0 a61af66fc99e Initial load duke parents: diff changeset	232 return basic + slop;
a61af66fc99e Initial load duke parents: diff changeset	233 } else {
623 9adddb8c0fc8 6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638) jrose parents: 196 diff changeset	234 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	235 // shift;add for load_klass (only shift with zero heap based)
660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 623 diff changeset	236 (UseCompressedOops ?
660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 623 diff changeset	237 ((Universe::narrow_oop_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0);
0 a61af66fc99e Initial load duke parents: diff changeset	238 return (basic + slop);
a61af66fc99e Initial load duke parents: diff changeset	239 }
a61af66fc99e Initial load duke parents: diff changeset	240 }
709 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 // 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	243 // +PrintMiscellaneous and +WizardMode to see information about
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	244 // 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	245 // 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	246 // 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	247 // 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	248 // 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	249 // sethi/or pair of instructions.
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	250 //
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	251 // 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	252 // The itable code looks like this:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	253 // Decoding VtableStub itbl[1]@16
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	254 // ld [ %o0 + 4 ], %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	255 // save %sp, -64, %sp
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	256 // ld [ %g3 + 0xe8 ], %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	257 // sll %l2, 2, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	258 // add %l2, 0x134, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	259 // and %l2, -8, %l2 ! NOT_LP64 only
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	260 // add %g3, %l2, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	261 // add %g3, 4, %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	262 // ld [ %l2 ], %l5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	263 // brz,pn %l5, throw_icce
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	264 // cmp %l5, %g5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	265 // be %icc, success
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	266 // add %l2, 8, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	267 // loop:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	268 // ld [ %l2 ], %l5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	269 // brz,pn %l5, throw_icce
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	270 // cmp %l5, %g5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	271 // bne,pn %icc, loop
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	272 // add %l2, 8, %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	273 // success:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	274 // ld [ %l2 + -4 ], %l2
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	275 // ld [ %g3 + %l2 ], %l5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	276 // restore %l5, 0, %g5
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	277 // ld [ %g5 + 0x44 ], %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	278 // jmp %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	279 // nop
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	280 // throw_icce:
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	281 // sethi %hi(throw_ICCE_entry), %g3
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	282 // ! 5 more instructions here, LP64_ONLY
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	283 // jmp %g3 + %lo(throw_ICCE_entry)
1d037ecd7960 6827505: sizing logic for vtable and itable stubs needs self-check jrose parents: 642 diff changeset	284 // restore
0 a61af66fc99e Initial load duke parents: diff changeset	285 }
a61af66fc99e Initial load duke parents: diff changeset	286
a61af66fc99e Initial load duke parents: diff changeset	287
a61af66fc99e Initial load duke parents: diff changeset	288 int VtableStub::pd_code_alignment() {
a61af66fc99e Initial load duke parents: diff changeset	289 // UltraSPARC cache line size is 8 instructions:
a61af66fc99e Initial load duke parents: diff changeset	290 const unsigned int icache_line_size = 32;
a61af66fc99e Initial load duke parents: diff changeset	291 return icache_line_size;
a61af66fc99e Initial load duke parents: diff changeset	292 }

Mercurial > hg > truffle

annotate src/cpu/sparc/vm/vtableStubs_sparc.cpp @ 4114:6729bbc1fcd6