Mercurial > hg > truffle
annotate src/cpu/sparc/vm/vtableStubs_sparc.cpp @ 2376:c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
Reviewed-by: kvn, coleenp, twisti, stefank
| author | never |
|---|---|
| date | Fri, 18 Mar 2011 16:00:34 -0700 |
| parents | f95d63e2154a |
| children | 3d42f82cd811 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "asm/assembler.hpp" | |
| 27 #include "assembler_sparc.inline.hpp" | |
| 28 #include "code/vtableStubs.hpp" | |
| 29 #include "interp_masm_sparc.hpp" | |
| 30 #include "memory/resourceArea.hpp" | |
| 31 #include "oops/instanceKlass.hpp" | |
| 32 #include "oops/klassVtable.hpp" | |
| 33 #include "runtime/sharedRuntime.hpp" | |
| 34 #include "vmreg_sparc.inline.hpp" | |
| 35 #ifdef COMPILER2 | |
| 36 #include "opto/runtime.hpp" | |
| 37 #endif | |
| 0 | 38 |
| 39 // machine-dependent part of VtableStubs: create vtableStub of correct size and | |
| 40 // initialize its code | |
| 41 | |
| 42 #define __ masm-> | |
| 43 | |
| 44 | |
| 45 #ifndef PRODUCT | |
| 46 extern "C" void bad_compiled_vtable_index(JavaThread* thread, oopDesc* receiver, int index); | |
| 47 #endif | |
| 48 | |
| 49 | |
| 50 // Used by compiler only; may use only caller saved, non-argument registers | |
| 51 // NOTE: %%%% if any change is made to this stub make sure that the function | |
| 52 // pd_code_size_limit is changed to ensure the correct size for VtableStub | |
| 53 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) { | |
| 54 const int sparc_code_length = VtableStub::pd_code_size_limit(true); | |
| 55 VtableStub* s = new(sparc_code_length) VtableStub(true, vtable_index); | |
| 56 ResourceMark rm; | |
| 57 CodeBuffer cb(s->entry_point(), sparc_code_length); | |
| 58 MacroAssembler* masm = new MacroAssembler(&cb); | |
| 59 | |
| 60 #ifndef PRODUCT | |
| 61 if (CountCompiledCalls) { | |
| 727 | 62 __ inc_counter(SharedRuntime::nof_megamorphic_calls_addr(), G5, G3_scratch); |
| 0 | 63 } |
| 64 #endif /* PRODUCT */ | |
| 65 | |
| 66 assert(VtableStub::receiver_location() == O0->as_VMReg(), "receiver expected in O0"); | |
| 67 | |
| 68 // get receiver klass | |
| 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 | 71 |
| 72 // set methodOop (in case of interpreted method), and destination address | |
| 73 int entry_offset = instanceKlass::vtable_start_offset() + vtable_index*vtableEntry::size(); | |
| 74 #ifndef PRODUCT | |
| 75 if (DebugVtables) { | |
| 76 Label L; | |
| 77 // check offset vs vtable length | |
| 78 __ ld(G3_scratch, instanceKlass::vtable_length_offset()*wordSize, G5); | |
| 79 __ cmp(G5, vtable_index*vtableEntry::size()); | |
| 80 __ br(Assembler::greaterUnsigned, false, Assembler::pt, L); | |
| 81 __ delayed()->nop(); | |
| 82 __ set(vtable_index, O2); | |
| 83 __ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), O0, O2); | |
| 84 __ bind(L); | |
| 85 } | |
| 86 #endif | |
| 87 int v_off = entry_offset*wordSize + vtableEntry::method_offset_in_bytes(); | |
| 88 if( __ is_simm13(v_off) ) { | |
| 89 __ ld_ptr(G3, v_off, G5_method); | |
| 90 } else { | |
| 91 __ set(v_off,G5); | |
| 92 __ ld_ptr(G3, G5, G5_method); | |
| 93 } | |
| 94 | |
| 95 #ifndef PRODUCT | |
| 96 if (DebugVtables) { | |
| 97 Label L; | |
| 98 __ br_notnull(G5_method, false, Assembler::pt, L); | |
| 99 __ delayed()->nop(); | |
| 100 __ stop("Vtable entry is ZERO"); | |
| 101 __ bind(L); | |
| 102 } | |
| 103 #endif | |
| 104 | |
| 105 address ame_addr = __ pc(); // if the vtable entry is null, the method is abstract | |
| 106 // NOTE: for vtable dispatches, the vtable entry will never be null. | |
| 107 | |
| 108 __ ld_ptr(G5_method, in_bytes(methodOopDesc::from_compiled_offset()), G3_scratch); | |
| 109 | |
| 110 // jump to target (either compiled code or c2iadapter) | |
| 111 __ JMP(G3_scratch, 0); | |
| 112 // load methodOop (in case we call c2iadapter) | |
| 113 __ delayed()->nop(); | |
| 114 | |
| 115 masm->flush(); | |
|
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
116 |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
117 if (PrintMiscellaneous && (WizardMode || Verbose)) { |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
118 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
|
119 vtable_index, s->entry_point(), |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
120 (int)(s->code_end() - s->entry_point()), |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
121 (int)(s->code_end() - __ pc())); |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
122 } |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
123 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
|
124 // shut the door on sizing bugs |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
125 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
|
126 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
|
127 |
| 0 | 128 s->set_exception_points(npe_addr, ame_addr); |
| 129 return s; | |
| 130 } | |
| 131 | |
| 132 | |
| 133 // NOTE: %%%% if any change is made to this stub make sure that the function | |
| 134 // 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
|
135 VtableStub* VtableStubs::create_itable_stub(int itable_index) { |
| 0 | 136 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
|
137 VtableStub* s = new(sparc_code_length) VtableStub(false, itable_index); |
| 0 | 138 ResourceMark rm; |
| 139 CodeBuffer cb(s->entry_point(), sparc_code_length); | |
| 140 MacroAssembler* masm = new MacroAssembler(&cb); | |
| 141 | |
| 142 Register G3_klassOop = G3_scratch; | |
| 143 Register G5_interface = G5; // Passed in as an argument | |
| 144 Label search; | |
| 145 | |
| 146 // Entry arguments: | |
| 147 // G5_interface: Interface | |
| 148 // O0: Receiver | |
| 149 assert(VtableStub::receiver_location() == O0->as_VMReg(), "receiver expected in O0"); | |
| 150 | |
| 151 // get receiver klass (also an implicit null-check) | |
| 152 address npe_addr = __ pc(); | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
153 __ load_klass(O0, G3_klassOop); |
| 0 | 154 __ verify_oop(G3_klassOop); |
| 155 | |
| 156 // Push a new window to get some temp registers. This chops the head of all | |
| 157 // my 64-bit %o registers in the LION build, but this is OK because no longs | |
| 158 // are passed in the %o registers. Instead, longs are passed in G1 and G4 | |
| 159 // and so those registers are not available here. | |
| 160 __ save(SP,-frame::register_save_words*wordSize,SP); | |
| 161 | |
| 162 #ifndef PRODUCT | |
| 163 if (CountCompiledCalls) { | |
| 727 | 164 __ inc_counter(SharedRuntime::nof_megamorphic_calls_addr(), L0, L1); |
| 0 | 165 } |
| 166 #endif /* PRODUCT */ | |
| 167 | |
|
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
168 Label throw_icce; |
| 0 | 169 |
|
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
170 Register L5_method = L5; |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
171 __ 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
|
172 G3_klassOop, G5_interface, itable_index, |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
173 // outputs: method, scan temp. reg |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
174 L5_method, L2, L3, |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
175 throw_icce); |
| 0 | 176 |
| 177 #ifndef PRODUCT | |
| 178 if (DebugVtables) { | |
| 179 Label L01; | |
|
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
180 __ bpr(Assembler::rc_nz, false, Assembler::pt, L5_method, L01); |
| 0 | 181 __ delayed()->nop(); |
| 182 __ stop("methodOop is null"); | |
| 183 __ bind(L01); | |
|
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
184 __ verify_oop(L5_method); |
| 0 | 185 } |
| 186 #endif | |
| 187 | |
| 188 // If the following load is through a NULL pointer, we'll take an OS | |
| 189 // exception that should translate into an AbstractMethodError. We need the | |
| 190 // 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
|
191 __ restore(L5_method, 0, G5_method); |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
192 // Restore registers *before* the AME point. |
| 0 | 193 |
| 194 address ame_addr = __ pc(); // if the vtable entry is null, the method is abstract | |
| 195 __ ld_ptr(G5_method, in_bytes(methodOopDesc::from_compiled_offset()), G3_scratch); | |
| 196 | |
| 197 // G5_method: methodOop | |
| 198 // O0: Receiver | |
| 199 // G3_scratch: entry point | |
| 200 __ JMP(G3_scratch, 0); | |
| 201 __ delayed()->nop(); | |
| 202 | |
|
16
f8236e79048a
6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents:
0
diff
changeset
|
203 __ bind(throw_icce); |
| 727 | 204 AddressLiteral icce(StubRoutines::throw_IncompatibleClassChangeError_entry()); |
| 205 __ jump_to(icce, G3_scratch); | |
|
16
f8236e79048a
6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents:
0
diff
changeset
|
206 __ delayed()->restore(); |
|
f8236e79048a
6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents:
0
diff
changeset
|
207 |
| 0 | 208 masm->flush(); |
|
16
f8236e79048a
6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents:
0
diff
changeset
|
209 |
|
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
210 if (PrintMiscellaneous && (WizardMode || Verbose)) { |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
211 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
|
212 itable_index, s->entry_point(), |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
213 (int)(s->code_end() - s->entry_point()), |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
214 (int)(s->code_end() - __ pc())); |
|
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
215 } |
|
16
f8236e79048a
6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents:
0
diff
changeset
|
216 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
|
217 // shut the door on sizing bugs |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
218 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
|
219 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
|
220 |
| 0 | 221 s->set_exception_points(npe_addr, ame_addr); |
| 222 return s; | |
| 223 } | |
| 224 | |
| 225 | |
| 226 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
|
227 if (TraceJumps || DebugVtables || CountCompiledCalls || VerifyOops) return 1000; |
| 0 | 228 else { |
| 229 const int slop = 2*BytesPerInstWord; // sethi;add (needed for long offsets) | |
| 230 if (is_vtable_stub) { | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
231 // ld;ld;ld,jmp,nop |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
232 const int basic = 5*BytesPerInstWord + |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
233 // 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
|
234 (UseCompressedOops ? |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
235 ((Universe::narrow_oop_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0); |
| 0 | 236 return basic + slop; |
| 237 } else { | |
|
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
196
diff
changeset
|
238 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
|
239 // 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
|
240 (UseCompressedOops ? |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
241 ((Universe::narrow_oop_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0); |
| 0 | 242 return (basic + slop); |
| 243 } | |
| 244 } | |
|
709
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
245 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
246 // 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
|
247 // +PrintMiscellaneous and +WizardMode to see information about |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
248 // 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
|
249 // 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
|
250 // 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
|
251 // 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
|
252 // 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
|
253 // sethi/or pair of instructions. |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
254 // |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
255 // 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
|
256 // The itable code looks like this: |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
257 // Decoding VtableStub itbl[1]@16 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
258 // ld [ %o0 + 4 ], %g3 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
259 // save %sp, -64, %sp |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
260 // ld [ %g3 + 0xe8 ], %l2 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
261 // sll %l2, 2, %l2 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
262 // add %l2, 0x134, %l2 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
263 // and %l2, -8, %l2 ! NOT_LP64 only |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
264 // add %g3, %l2, %l2 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
265 // add %g3, 4, %g3 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
266 // ld [ %l2 ], %l5 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
267 // brz,pn %l5, throw_icce |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
268 // cmp %l5, %g5 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
269 // be %icc, success |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
270 // add %l2, 8, %l2 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
271 // loop: |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
272 // ld [ %l2 ], %l5 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
273 // brz,pn %l5, throw_icce |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
274 // cmp %l5, %g5 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
275 // bne,pn %icc, loop |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
276 // add %l2, 8, %l2 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
277 // success: |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
278 // ld [ %l2 + -4 ], %l2 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
279 // ld [ %g3 + %l2 ], %l5 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
280 // restore %l5, 0, %g5 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
281 // ld [ %g5 + 0x44 ], %g3 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
282 // jmp %g3 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
283 // nop |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
284 // throw_icce: |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
285 // sethi %hi(throw_ICCE_entry), %g3 |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
286 // ! 5 more instructions here, LP64_ONLY |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
287 // jmp %g3 + %lo(throw_ICCE_entry) |
|
1d037ecd7960
6827505: sizing logic for vtable and itable stubs needs self-check
jrose
parents:
642
diff
changeset
|
288 // restore |
| 0 | 289 } |
| 290 | |
| 291 | |
| 292 int VtableStub::pd_code_alignment() { | |
| 293 // UltraSPARC cache line size is 8 instructions: | |
| 294 const unsigned int icache_line_size = 32; | |
| 295 return icache_line_size; | |
| 296 } |