src/hotspot/cpu/ppc/vtableStubs_ppc_64.cpp
author jiefu
Fri, 11 Oct 2019 17:49:25 +0800
changeset 58554 8c3c39710a08
parent 51618 54b344d9dd4e
permissions -rw-r--r--
8232151: Minimal VM build broken after JDK-8232050 Reviewed-by: dholmes, clanger
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
     1
/*
48717
7a5835a47adf 8196503: PPC64: vtableStubs gtest fails after 8174962
mdoerr
parents: 48585
diff changeset
     2
 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
7a5835a47adf 8196503: PPC64: vtableStubs gtest fails after 8174962
mdoerr
parents: 48585
diff changeset
     3
 * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
     4
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
     5
 *
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
     6
 * This code is free software; you can redistribute it and/or modify it
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
     7
 * under the terms of the GNU General Public License version 2 only, as
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
     8
 * published by the Free Software Foundation.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
     9
 *
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    10
 * This code is distributed in the hope that it will be useful, but WITHOUT
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    11
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    12
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    13
 * version 2 for more details (a copy is included in the LICENSE file that
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    14
 * accompanied this code).
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    15
 *
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    16
 * You should have received a copy of the GNU General Public License version
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    17
 * 2 along with this work; if not, write to the Free Software Foundation,
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    18
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    19
 *
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    20
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    21
 * or visit www.oracle.com if you need additional information or have any
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    22
 * questions.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    23
 *
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    24
 */
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    25
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    26
#include "precompiled.hpp"
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    27
#include "asm/macroAssembler.inline.hpp"
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    28
#include "code/vtableStubs.hpp"
40010
e32d5e545789 8161258: Simplify including platform files.
goetz
parents: 35913
diff changeset
    29
#include "interp_masm_ppc.hpp"
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    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"
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    32
#include "oops/instanceKlass.hpp"
58554
8c3c39710a08 8232151: Minimal VM build broken after JDK-8232050
jiefu
parents: 51618
diff changeset
    33
#include "oops/klass.inline.hpp"
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    34
#include "oops/klassVtable.hpp"
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    35
#include "runtime/sharedRuntime.hpp"
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    36
#include "vmreg_ppc.inline.hpp"
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    37
#ifdef COMPILER2
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    38
#include "opto/runtime.hpp"
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    39
#endif
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    40
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    41
#define __ masm->
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    42
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    43
#ifndef PRODUCT
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    44
extern "C" void bad_compiled_vtable_index(JavaThread* thread, oopDesc* receiver, int index);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    45
#endif
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    46
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    47
// Used by compiler only; may use only caller saved, non-argument registers.
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    48
VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
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: 48717
diff changeset
    50
  const int stub_code_length = code_size_limit(true);
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    51
  VtableStub* s = new(stub_code_length) VtableStub(true, vtable_index);
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    52
  // Can be NULL if there is no free space in the code cache.
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    53
  if (s == NULL) {
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    54
    return NULL;
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    55
  }
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    56
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    57
  // Count unused bytes in instruction sequences of variable size.
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
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: 48717
diff changeset
    59
  // overflow in subsequently generated stubs.
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    60
  address   start_pc;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    61
  int       slop_bytes = 8; // just a two-instruction safety net
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    62
  int       slop_delta = 0;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    63
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    64
  ResourceMark    rm;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    65
  CodeBuffer      cb(s->entry_point(), stub_code_length);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    66
  MacroAssembler* masm = new MacroAssembler(&cb);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    67
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    68
#if (!defined(PRODUCT) && defined(COMPILER2))
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    69
  if (CountCompiledCalls) {
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    70
    start_pc = __ pc();
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    71
    int load_const_maxLen = 5*BytesPerInstWord;  // load_const generates 5 instructions. Assume that as max size for laod_const_optimized
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    72
    int offs = __ load_const_optimized(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr(), R12_scratch2, true);
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    73
    slop_delta  = load_const_maxLen - (__ pc() - start_pc);
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    74
    slop_bytes += slop_delta;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    75
    assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta);
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    76
    __ lwz(R12_scratch2, offs, R11_scratch1);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    77
    __ addi(R12_scratch2, R12_scratch2, 1);
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
    78
    __ stw(R12_scratch2, offs, R11_scratch1);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    79
  }
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    80
#endif
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    81
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    82
  assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    83
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    84
  const Register rcvr_klass = R11_scratch1;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    85
  address npe_addr = __ pc(); // npe = null pointer exception
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    86
  // check if we must do an explicit check (implicit checks disabled, offset too large).
35085
839c8ba29724 8144019: PPC64 C1: Introduce Client Compiler
mdoerr
parents: 30303
diff changeset
    87
  __ null_check(R3, oopDesc::klass_offset_in_bytes(), /*implicit only*/NULL);
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
    88
  // Get receiver klass.
35085
839c8ba29724 8144019: PPC64 C1: Introduce Client Compiler
mdoerr
parents: 30303
diff changeset
    89
  __ load_klass(rcvr_klass, R3);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    90
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    91
#ifndef PRODUCT
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    92
  if (DebugVtables) {
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    93
    Label L;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    94
    // Check offset vs vtable length.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    95
    const Register vtable_len = R12_scratch2;
35899
0dbc821628fc 8148047: Move the vtable length field to Klass
mgerdin
parents: 35871
diff changeset
    96
    __ lwz(vtable_len, in_bytes(Klass::vtable_length_offset()), rcvr_klass);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    97
    __ cmpwi(CCR0, vtable_len, vtable_index*vtableEntry::size());
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    98
    __ bge(CCR0, L);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
    99
    __ li(R12_scratch2, vtable_index);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   100
    __ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), R3_ARG1, R12_scratch2, false);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   101
    __ bind(L);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   102
  }
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   103
#endif
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   104
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   105
  int entry_offset = in_bytes(Klass::vtable_start_offset()) +
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   106
                     vtable_index*vtableEntry::size_in_bytes();
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   107
  int v_off        = entry_offset + vtableEntry::method_offset_in_bytes();
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   108
48717
7a5835a47adf 8196503: PPC64: vtableStubs gtest fails after 8174962
mdoerr
parents: 48585
diff changeset
   109
  __ ld(R19_method, (RegisterOrConstant)v_off, rcvr_klass);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   110
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   111
#ifndef PRODUCT
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   112
  if (DebugVtables) {
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   113
    Label L;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   114
    __ cmpdi(CCR0, R19_method, 0);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   115
    __ bne(CCR0, L);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   116
    __ stop("Vtable entry is ZERO", 102);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   117
    __ bind(L);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   118
  }
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   119
#endif
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   120
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   121
  address ame_addr = __ pc(); // ame = abstract method error
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   122
                              // if the vtable entry is null, the method is abstract
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   123
                              // NOTE: for vtable dispatches, the vtable entry will never be null.
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   124
35085
839c8ba29724 8144019: PPC64 C1: Introduce Client Compiler
mdoerr
parents: 30303
diff changeset
   125
  __ null_check(R19_method, in_bytes(Method::from_compiled_offset()), /*implicit only*/NULL);
839c8ba29724 8144019: PPC64 C1: Introduce Client Compiler
mdoerr
parents: 30303
diff changeset
   126
  __ ld(R12_scratch2, in_bytes(Method::from_compiled_offset()), R19_method);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   127
  __ mtctr(R12_scratch2);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   128
  __ bctr();
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   129
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   130
  masm->flush();
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   131
  bookkeeping(masm, tty, s, npe_addr, ame_addr, true, vtable_index, slop_bytes, 0);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   132
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   133
  return s;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   134
}
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   135
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   136
VtableStub* VtableStubs::create_itable_stub(int itable_index) {
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   137
  // 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: 48717
diff changeset
   138
  const int stub_code_length = code_size_limit(false);
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   139
  VtableStub* s = new(stub_code_length) VtableStub(false, itable_index);
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   140
  // Can be NULL if there is no free space in the code cache.
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   141
  if (s == NULL) {
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   142
    return NULL;
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   143
  }
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   144
  // Count unused bytes in instruction sequences of variable size.
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   145
  // We add them to the computed buffer size in order to avoid
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   146
  // overflow in subsequently generated stubs.
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   147
  address   start_pc;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   148
  int       slop_bytes = 8; // just a two-instruction safety net
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   149
  int       slop_delta = 0;
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   150
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   151
  ResourceMark    rm;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   152
  CodeBuffer      cb(s->entry_point(), stub_code_length);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   153
  MacroAssembler* masm = new MacroAssembler(&cb);
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   154
  int             load_const_maxLen = 5*BytesPerInstWord;  // load_const generates 5 instructions. Assume that as max size for laod_const_optimized
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   155
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   156
#if (!defined(PRODUCT) && defined(COMPILER2))
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   157
  if (CountCompiledCalls) {
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   158
    start_pc = __ pc();
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   159
    int offs = __ load_const_optimized(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr(), R12_scratch2, true);
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   160
    slop_delta  = load_const_maxLen - (__ pc() - start_pc);
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   161
    slop_bytes += slop_delta;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   162
    assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta);
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   163
    __ lwz(R12_scratch2, offs, R11_scratch1);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   164
    __ addi(R12_scratch2, R12_scratch2, 1);
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   165
    __ stw(R12_scratch2, offs, R11_scratch1);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   166
  }
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   167
#endif
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   168
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   169
  assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   170
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   171
  // Entry arguments:
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   172
  //  R19_method: Interface
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22852
diff changeset
   173
  //  R3_ARG1:    Receiver
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   174
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   175
  Label L_no_such_interface;
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   176
  const Register rcvr_klass = R11_scratch1,
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   177
                 interface  = R12_scratch2,
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   178
                 tmp1       = R21_tmp1,
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   179
                 tmp2       = R22_tmp2;
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   180
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   181
  address npe_addr = __ pc(); // npe = null pointer exception
35085
839c8ba29724 8144019: PPC64 C1: Introduce Client Compiler
mdoerr
parents: 30303
diff changeset
   182
  __ null_check(R3_ARG1, oopDesc::klass_offset_in_bytes(), /*implicit only*/NULL);
839c8ba29724 8144019: PPC64 C1: Introduce Client Compiler
mdoerr
parents: 30303
diff changeset
   183
  __ load_klass(rcvr_klass, R3_ARG1);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   184
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   185
  // Receiver subtype check against REFC.
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   186
  __ ld(interface, CompiledICHolder::holder_klass_offset(), R19_method);
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   187
  __ lookup_interface_method(rcvr_klass, interface, noreg,
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   188
                             R0, tmp1, tmp2,
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   189
                             L_no_such_interface, /*return_method=*/ false);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   190
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   191
  // Get Method* and entrypoint for compiler
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   192
  __ ld(interface, CompiledICHolder::holder_metadata_offset(), R19_method);
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   193
  __ 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
   194
                             R19_method, tmp1, tmp2,
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   195
                             L_no_such_interface, /*return_method=*/ true);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   196
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   197
#ifndef PRODUCT
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   198
  if (DebugVtables) {
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   199
    Label ok;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   200
    __ cmpd(CCR0, R19_method, 0);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   201
    __ bne(CCR0, ok);
23492
af5352f40e65 8037915: PPC64/AIX: Several smaller fixes
goetz
parents: 22861
diff changeset
   202
    __ stop("method is null", 103);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   203
    __ bind(ok);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   204
  }
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   205
#endif
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   206
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   207
  // If the vtable entry is null, the method is abstract.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   208
  address ame_addr = __ pc(); // ame = abstract method error
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   209
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   210
  // Must do an explicit check if implicit checks are disabled.
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   211
  __ null_check(R19_method, in_bytes(Method::from_compiled_offset()), &L_no_such_interface);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   212
  __ ld(R12_scratch2, in_bytes(Method::from_compiled_offset()), R19_method);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   213
  __ mtctr(R12_scratch2);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   214
  __ bctr();
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   215
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   216
  // Handle IncompatibleClassChangeError in itable stubs.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   217
  // More detailed error message.
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   218
  // We force resolving of the call site by jumping to the "handle
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   219
  // wrong method" stub, and so let the interpreter runtime do all the
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   220
  // dirty work.
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   221
  __ bind(L_no_such_interface);
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   222
  start_pc = __ pc();
48585
d9fcb7ba8133 8191907: PPC64 and s390 parts of JDK-8174962: Better interface invocations
mdoerr
parents: 47216
diff changeset
   223
  __ load_const_optimized(R11_scratch1, SharedRuntime::get_handle_wrong_method_stub(), R12_scratch2);
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   224
  slop_delta  = load_const_maxLen - (__ pc() - start_pc);
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   225
  slop_bytes += slop_delta;
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   226
  assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   227
  __ mtctr(R11_scratch1);
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   228
  __ bctr();
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   229
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   230
  masm->flush();
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   231
  bookkeeping(masm, tty, s, npe_addr, ame_addr, false, itable_index, slop_bytes, 0);
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   232
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   233
  return s;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   234
}
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   235
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   236
int VtableStub::pd_code_alignment() {
51618
54b344d9dd4e 8207343: Automate vtable/itable stub size calculation
lucy
parents: 48717
diff changeset
   237
  // Power cache line size is 128 bytes, but we want to limit alignment loss.
22824
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   238
  const unsigned int icache_line_size = 32;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   239
  return icache_line_size;
28258dd5cb2e 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
   240
}