author | herrick |
Thu, 17 Oct 2019 07:55:35 -0400 | |
branch | JDK-8200758-branch |
changeset 58670 | 6fb9e12d5595 |
parent 58554 | 8c3c39710a08 |
permissions | -rw-r--r-- |
42065 | 1 |
/* |
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
2 |
* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
3 |
* Copyright (c) 2016, 2018 SAP SE. All rights reserved. |
42065 | 4 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5 |
* |
|
6 |
* This code is free software; you can redistribute it and/or modify it |
|
7 |
* under the terms of the GNU General Public License version 2 only, as |
|
8 |
* published by the Free Software Foundation. |
|
9 |
* |
|
10 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
11 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
12 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
13 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
14 |
* accompanied this code). |
|
15 |
* |
|
16 |
* You should have received a copy of the GNU General Public License version |
|
17 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
18 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
19 |
* |
|
20 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
21 |
* or visit www.oracle.com if you need additional information or have any |
|
22 |
* questions. |
|
23 |
* |
|
24 |
*/ |
|
25 |
||
26 |
#include "precompiled.hpp" |
|
27 |
#include "asm/macroAssembler.inline.hpp" |
|
28 |
#include "code/vtableStubs.hpp" |
|
29 |
#include "interp_masm_s390.hpp" |
|
30 |
#include "memory/resourceArea.hpp" |
|
48585
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
31 |
#include "oops/compiledICHolder.hpp" |
42065 | 32 |
#include "oops/instanceKlass.hpp" |
58554 | 33 |
#include "oops/klass.inline.hpp" |
42065 | 34 |
#include "oops/klassVtable.hpp" |
35 |
#include "runtime/sharedRuntime.hpp" |
|
36 |
#include "vmreg_s390.inline.hpp" |
|
37 |
#ifdef COMPILER2 |
|
38 |
#include "opto/runtime.hpp" |
|
39 |
#endif |
|
40 |
||
41 |
#define __ masm-> |
|
42 |
||
43 |
#ifndef PRODUCT |
|
44 |
extern "C" void bad_compiled_vtable_index(JavaThread* thread, oop receiver, int index); |
|
45 |
#endif |
|
46 |
||
47 |
// Used by compiler only; may use only caller saved, non-argument registers. |
|
48 |
VtableStub* VtableStubs::create_vtable_stub(int vtable_index) { |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
49 |
// Read "A word on VtableStub sizing" in share/code/vtableStubs.hpp for details on stub sizing. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
50 |
const int stub_code_length = code_size_limit(true); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
51 |
VtableStub* s = new(stub_code_length) VtableStub(true, vtable_index); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
52 |
// Can be NULL if there is no free space in the code cache. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
53 |
if (s == NULL) { |
42065 | 54 |
return NULL; |
55 |
} |
|
56 |
||
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
57 |
// Count unused bytes in instruction sequences of variable size. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
58 |
// We add them to the computed buffer size in order to avoid |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
59 |
// overflow in subsequently generated stubs. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
60 |
address start_pc; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
61 |
int slop_bytes = 0; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
62 |
int slop_delta = 0; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
63 |
|
42065 | 64 |
ResourceMark rm; |
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
65 |
CodeBuffer cb(s->entry_point(), stub_code_length); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
66 |
MacroAssembler* masm = new MacroAssembler(&cb); |
42065 | 67 |
|
68 |
#if (!defined(PRODUCT) && defined(COMPILER2)) |
|
69 |
if (CountCompiledCalls) { |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
70 |
// worst case actual size |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
71 |
slop_delta = __ load_const_size() - __ load_const_optimized_rtn_len(Z_R1_scratch, (long)SharedRuntime::nof_megamorphic_calls_addr(), true); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
72 |
slop_bytes += slop_delta; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
73 |
assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta); |
42065 | 74 |
// Use generic emitter for direct memory increment. |
75 |
// Abuse Z_method as scratch register for generic emitter. |
|
76 |
// It is loaded further down anyway before it is first used. |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
77 |
// No dynamic code size variance here, increment is 1, always. |
42065 | 78 |
__ add2mem_32(Address(Z_R1_scratch), 1, Z_method); |
79 |
} |
|
80 |
#endif |
|
81 |
||
82 |
assert(VtableStub::receiver_location() == Z_R2->as_VMReg(), "receiver expected in Z_ARG1"); |
|
83 |
||
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
84 |
const Register rcvr_klass = Z_R1_scratch; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
85 |
address npe_addr = __ pc(); // npe == NULL ptr exception |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
86 |
// check if we must do an explicit check (implicit checks disabled, offset too large). |
42065 | 87 |
__ null_check(Z_ARG1, Z_R1_scratch, oopDesc::klass_offset_in_bytes()); |
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
88 |
// Get receiver klass. |
42065 | 89 |
__ load_klass(rcvr_klass, Z_ARG1); |
90 |
||
91 |
#ifndef PRODUCT |
|
92 |
if (DebugVtables) { |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
93 |
NearLabel L; |
42065 | 94 |
// Check offset vs vtable length. |
95 |
const Register vtable_idx = Z_R0_scratch; |
|
96 |
||
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
97 |
// worst case actual size |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
98 |
slop_delta = __ load_const_size() - __ load_const_optimized_rtn_len(vtable_idx, vtable_index*vtableEntry::size(), true); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
99 |
slop_bytes += slop_delta; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
100 |
assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta); |
42065 | 101 |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
102 |
assert(Displacement::is_shortDisp(in_bytes(Klass::vtable_length_offset())), "disp to large"); |
46280
6eef3d367beb
8175269: [s390] cleanup calls to vtable_start_offset() and vtable_length_offset()
lucy
parents:
42065
diff
changeset
|
103 |
__ z_cl(vtable_idx, in_bytes(Klass::vtable_length_offset()), rcvr_klass); |
42065 | 104 |
__ z_brl(L); |
105 |
__ z_lghi(Z_ARG3, vtable_index); // Debug code, don't optimize. |
|
106 |
__ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), Z_ARG1, Z_ARG3, false); |
|
107 |
// Count unused bytes (assume worst case here). |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
108 |
slop_bytes += 12; |
42065 | 109 |
__ bind(L); |
110 |
} |
|
111 |
#endif |
|
112 |
||
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
113 |
int entry_offset = in_bytes(Klass::vtable_start_offset()) + |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
114 |
vtable_index * vtableEntry::size_in_bytes(); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
115 |
int v_off = entry_offset + vtableEntry::method_offset_in_bytes(); |
42065 | 116 |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
117 |
// Set method (in case of interpreted method), and destination address. |
42065 | 118 |
// Duplicate safety code from enc_class Java_Dynamic_Call_dynTOC. |
119 |
if (Displacement::is_validDisp(v_off)) { |
|
120 |
__ z_lg(Z_method/*method oop*/, v_off, rcvr_klass/*class oop*/); |
|
121 |
// Account for the load_const in the else path. |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
122 |
slop_delta = __ load_const_size(); |
42065 | 123 |
} else { |
124 |
// Worse case, offset does not fit in displacement field. |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
125 |
// worst case actual size |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
126 |
slop_delta = __ load_const_size() - __ load_const_optimized_rtn_len(Z_method, v_off, true); |
42065 | 127 |
__ z_lg(Z_method/*method oop*/, 0, Z_method/*method offset*/, rcvr_klass/*class oop*/); |
128 |
} |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
129 |
slop_bytes += slop_delta; |
42065 | 130 |
|
131 |
#ifndef PRODUCT |
|
132 |
if (DebugVtables) { |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
133 |
NearLabel L; |
42065 | 134 |
__ z_ltgr(Z_method, Z_method); |
135 |
__ z_brne(L); |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
136 |
__ stop("Vtable entry is ZERO", 102); |
42065 | 137 |
__ bind(L); |
138 |
} |
|
139 |
#endif |
|
140 |
||
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
141 |
// Must do an explicit check if offset too large or implicit checks are disabled. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
142 |
address ame_addr = __ pc(); |
42065 | 143 |
__ null_check(Z_method, Z_R1_scratch, in_bytes(Method::from_compiled_offset())); |
144 |
__ z_lg(Z_R1_scratch, in_bytes(Method::from_compiled_offset()), Z_method); |
|
145 |
__ z_br(Z_R1_scratch); |
|
146 |
||
147 |
masm->flush(); |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
148 |
bookkeeping(masm, tty, s, npe_addr, ame_addr, true, vtable_index, slop_bytes, 0); |
42065 | 149 |
|
150 |
return s; |
|
151 |
} |
|
152 |
||
48585
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
153 |
VtableStub* VtableStubs::create_itable_stub(int itable_index) { |
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
154 |
// Read "A word on VtableStub sizing" in share/code/vtableStubs.hpp for details on stub sizing. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
155 |
const int stub_code_length = code_size_limit(false); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
156 |
VtableStub* s = new(stub_code_length) VtableStub(false, itable_index); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
157 |
// Can be NULL if there is no free space in the code cache. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
158 |
if (s == NULL) { |
42065 | 159 |
return NULL; |
160 |
} |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
161 |
// Count unused bytes in instruction sequences of variable size. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
162 |
// We add them to the computed buffer size in order to avoid |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
163 |
// overflow in subsequently generated stubs. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
164 |
address start_pc; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
165 |
int slop_bytes = 0; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
166 |
int slop_delta = 0; |
42065 | 167 |
|
168 |
ResourceMark rm; |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
169 |
CodeBuffer cb(s->entry_point(), stub_code_length); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
170 |
MacroAssembler* masm = new MacroAssembler(&cb); |
42065 | 171 |
|
172 |
#if (!defined(PRODUCT) && defined(COMPILER2)) |
|
173 |
if (CountCompiledCalls) { |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
174 |
// worst case actual size |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
175 |
slop_delta = __ load_const_size() - __ load_const_optimized_rtn_len(Z_R1_scratch, (long)SharedRuntime::nof_megamorphic_calls_addr(), true); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
176 |
slop_bytes += slop_delta; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
177 |
assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta); |
42065 | 178 |
// Use generic emitter for direct memory increment. |
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
179 |
// Abuse Z_method as scratch register for generic emitter. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
180 |
// It is loaded further down anyway before it is first used. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
181 |
// No dynamic code size variance here, increment is 1, always. |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
182 |
__ add2mem_32(Address(Z_R1_scratch), 1, Z_method); |
42065 | 183 |
} |
184 |
#endif |
|
185 |
||
186 |
assert(VtableStub::receiver_location() == Z_R2->as_VMReg(), "receiver expected in Z_ARG1"); |
|
187 |
||
188 |
// Entry arguments: |
|
189 |
// Z_method: Interface |
|
190 |
// Z_ARG1: Receiver |
|
48585
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
191 |
NearLabel no_such_interface; |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
192 |
const Register rcvr_klass = Z_tmp_1, |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
193 |
interface = Z_tmp_2; |
42065 | 194 |
|
195 |
// Get receiver klass. |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
196 |
// Must do an explicit check if offset too large or implicit checks are disabled. |
42065 | 197 |
address npe_addr = __ pc(); // npe == NULL ptr exception |
198 |
__ null_check(Z_ARG1, Z_R1_scratch, oopDesc::klass_offset_in_bytes()); |
|
199 |
__ load_klass(rcvr_klass, Z_ARG1); |
|
200 |
||
48585
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
201 |
// Receiver subtype check against REFC. |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
202 |
__ z_lg(interface, Address(Z_method, CompiledICHolder::holder_klass_offset())); |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
203 |
__ lookup_interface_method(rcvr_klass, interface, noreg, |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
204 |
noreg, Z_R1, no_such_interface, /*return_method=*/ false); |
42065 | 205 |
|
48585
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
206 |
// Get Method* and entrypoint for compiler |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
207 |
__ z_lg(interface, Address(Z_method, CompiledICHolder::holder_metadata_offset())); |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
208 |
__ lookup_interface_method(rcvr_klass, interface, itable_index, |
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
209 |
Z_method, Z_R1, no_such_interface, /*return_method=*/ true); |
42065 | 210 |
|
211 |
#ifndef PRODUCT |
|
212 |
if (DebugVtables) { |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
213 |
NearLabel ok1; |
42065 | 214 |
__ z_ltgr(Z_method, Z_method); |
215 |
__ z_brne(ok1); |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
216 |
__ stop("method is null", 103); |
42065 | 217 |
__ bind(ok1); |
218 |
} |
|
219 |
#endif |
|
220 |
||
221 |
address ame_addr = __ pc(); |
|
222 |
// Must do an explicit check if implicit checks are disabled. |
|
223 |
if (!ImplicitNullChecks) { |
|
48585
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
224 |
__ compare64_and_branch(Z_method, (intptr_t) 0, Assembler::bcondEqual, no_such_interface); |
42065 | 225 |
} |
226 |
__ z_lg(Z_R1_scratch, in_bytes(Method::from_compiled_offset()), Z_method); |
|
227 |
__ z_br(Z_R1_scratch); |
|
228 |
||
229 |
// Handle IncompatibleClassChangeError in itable stubs. |
|
48585
d9fcb7ba8133
8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents:
47216
diff
changeset
|
230 |
__ bind(no_such_interface); |
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
231 |
// more detailed IncompatibleClassChangeError |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
232 |
// we force re-resolving of the call site by jumping to |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
233 |
// the "handle wrong method" stub, thus letting the |
42065 | 234 |
// interpreter runtime do all the dirty work. |
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
235 |
// worst case actual size |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
236 |
slop_delta = __ load_const_size() - __ load_const_optimized_rtn_len(Z_R1_scratch, (long)SharedRuntime::get_handle_wrong_method_stub(), true); |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
237 |
slop_bytes += slop_delta; |
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
238 |
assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta); |
42065 | 239 |
__ z_br(Z_R1_scratch); |
240 |
||
241 |
masm->flush(); |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
242 |
bookkeeping(masm, tty, s, npe_addr, ame_addr, false, itable_index, slop_bytes, 0); |
42065 | 243 |
|
244 |
return s; |
|
245 |
} |
|
246 |
||
247 |
int VtableStub::pd_code_alignment() { |
|
51618
54b344d9dd4e
8207343: Automate vtable/itable stub size calculation
lucy
parents:
48585
diff
changeset
|
248 |
// System z cache line size is 256 bytes, but octoword-alignment is quite ok. |
42065 | 249 |
const unsigned int icache_line_size = 32; |
250 |
return icache_line_size; |
|
251 |
} |