rev 1838 : 6961690: load oops from constant table on SPARC
Summary: oops should be loaded from the constant table of an nmethod instead of materializing them with a long code sequence.
Reviewed-by:

          --- old/src/share/vm/asm/assembler.inline.hpp
          +++ new/src/share/vm/asm/assembler.inline.hpp
   1    1  /*
   2      - * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
        2 + * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
   3    3   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4    4   *
   5    5   * This code is free software; you can redistribute it and/or modify it
   6    6   * under the terms of the GNU General Public License version 2 only, as
   7    7   * published by the Free Software Foundation.
   8    8   *
   9    9   * This code is distributed in the hope that it will be useful, but WITHOUT
  10   10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11   11   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12   12   * version 2 for more details (a copy is included in the LICENSE file that

  13   13   * accompanied this code).
  14   14   *
  15   15   * You should have received a copy of the GNU General Public License version
  16   16   * 2 along with this work; if not, write to the Free Software Foundation,
  17   17   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18   18   *
  19   19   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20   20   * or visit www.oracle.com if you need additional information or have any
  21   21   * questions.
  22   22   *
  23   23   */
  24   24  
  25   25  inline void AbstractAssembler::sync() {
  26   26    CodeSection* cs = code_section();
  27   27    guarantee(cs->start() == _code_begin, "must not shift code buffer");
  28   28    cs->set_end(_code_pos);
  29   29  }
  30   30  
  31   31  inline void AbstractAssembler::emit_byte(int x) {
  32   32    assert(isByte(x), "not a byte");
  33   33    *(unsigned char*)_code_pos = (unsigned char)x;
  34   34    _code_pos += sizeof(unsigned char);
  35   35    sync();
  36   36  }
  37   37  
  38   38  
  39   39  inline void AbstractAssembler::emit_word(int x) {
  40   40    *(short*)_code_pos = (short)x;
  41   41    _code_pos += sizeof(short);
  42   42    sync();
  43   43  }
  44   44  
  45   45  
  46   46  inline void AbstractAssembler::emit_long(jint x) {
  47   47    *(jint*)_code_pos = x;
  48   48    _code_pos += sizeof(jint);
  49   49    sync();
  50   50  }
  51   51  
  52   52  inline void AbstractAssembler::emit_address(address x) {
  53   53    *(address*)_code_pos = x;
  54   54    _code_pos += sizeof(address);
  55   55    sync();
  56   56  }
  57   57  
  58   58  inline address AbstractAssembler::inst_mark() const {
  59   59    return code_section()->mark();
  60   60  }
  61   61  
  62   62  
  63   63  inline void AbstractAssembler::set_inst_mark() {
  64   64    code_section()->set_mark();
  65   65  }
  66   66  
  67   67  
  68   68  inline void AbstractAssembler::clear_inst_mark() {
  69   69    code_section()->clear_mark();
  70   70  }
  71   71  
  72   72  
  73   73  inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) {
  74   74    assert(!pd_check_instruction_mark()
  75   75           || inst_mark() == NULL || inst_mark() == _code_pos,
  76   76           "call relocate() between instructions");
  77   77    code_section()->relocate(_code_pos, rspec, format);
  78   78  }
  79   79  
  80   80  
  81   81  inline CodeBuffer* AbstractAssembler::code() const {
  82   82    return code_section()->outer();
  83   83  }
  84   84  
  85   85  inline int AbstractAssembler::sect() const {
  86   86    return code_section()->index();
  87   87  }
  88   88  
  89   89  inline int AbstractAssembler::locator() const {
  90   90    return CodeBuffer::locator(offset(), sect());
  91   91  }
  92   92  
  93   93  inline address AbstractAssembler::target(Label& L) {
  94   94    return code_section()->target(L, pc());
  95   95  }
  96   96  
  97   97  inline int Label::loc_pos() const {

  98   98    return CodeBuffer::locator_pos(loc());
  99   99  }
 100  100  
 101  101  inline int Label::loc_sect() const {
 102  102    return CodeBuffer::locator_sect(loc());
 103  103  }
 104  104  
 105  105  inline void Label::bind_loc(int pos, int sect) {
 106  106    bind_loc(CodeBuffer::locator(pos, sect));
 107  107  }
 108      -
 109      -address AbstractAssembler::address_constant(Label& L) {
 110      -  address c = NULL;
 111      -  address ptr = start_a_const(sizeof(c), sizeof(c));
 112      -  if (ptr != NULL) {
 113      -    relocate(Relocation::spec_simple(relocInfo::internal_word_type));
 114      -    *(address*)ptr = c = code_section()->target(L, ptr);
 115      -    _code_pos = ptr + sizeof(c);
 116      -    end_a_const();
 117      -  }
 118      -  return ptr;
 119      -}
 120      -
 121      -address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) {
 122      -  int addressSize = sizeof(address);
 123      -  int sizeLabel = addressSize * labels.length();
 124      -  address ptr = start_a_const(sizeLabel, addressSize);
 125      -
 126      -  if (ptr != NULL) {
 127      -    address *labelLoc = (address*)ptr;
 128      -    for (int i=0; i < labels.length(); i++) {
 129      -      emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i]));
 130      -      code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type);
 131      -    }
 132      -    end_a_const();
 133      -  }
 134      -  return ptr;
 135      -}
    

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX