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1 /*
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2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // This file specializes the assember with interpreter-specific macros
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26
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27 REGISTER_DECLARATION( Register, Otos_i , O0); // tos for ints, etc
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28 REGISTER_DECLARATION( Register, Otos_l , O0); // for longs
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29 REGISTER_DECLARATION( Register, Otos_l1, O0); // for 1st part of longs
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30 REGISTER_DECLARATION( Register, Otos_l2, O1); // for 2nd part of longs
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31 REGISTER_DECLARATION(FloatRegister, Ftos_f , F0); // for floats
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32 REGISTER_DECLARATION(FloatRegister, Ftos_d , F0); // for doubles
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33 REGISTER_DECLARATION(FloatRegister, Ftos_d1, F0); // for 1st part of double
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34 REGISTER_DECLARATION(FloatRegister, Ftos_d2, F1); // for 2nd part of double
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35
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36 #ifndef DONT_USE_REGISTER_DEFINES
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37 #define Otos_i O0
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38 #define Otos_l O0
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39 #define Otos_l1 O0
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40 #define Otos_l2 O1
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41 #define Ftos_f F0
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42 #define Ftos_d F0
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43 #define Ftos_d1 F0
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44 #define Ftos_d2 F1
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45 #endif // DONT_USE_REGISTER_DEFINES
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46
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47 class InterpreterMacroAssembler: public MacroAssembler {
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48 protected:
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49 #ifndef CC_INTERP
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50 // Interpreter specific version of call_VM_base
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51 virtual void call_VM_leaf_base(
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52 Register java_thread,
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53 address entry_point,
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54 int number_of_arguments
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55 );
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56
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57 virtual void call_VM_base(
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58 Register oop_result,
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59 Register java_thread,
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60 Register last_java_sp,
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61 address entry_point,
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62 int number_of_arguments,
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63 bool check_exception=true
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64 );
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65
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66 virtual void check_and_handle_popframe(Register java_thread);
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67 virtual void check_and_handle_earlyret(Register java_thread);
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68
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69 // base routine for all dispatches
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70 void dispatch_base(TosState state, address* table);
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71 #endif /* CC_INTERP */
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72
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73 public:
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74 InterpreterMacroAssembler(CodeBuffer* c)
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75 : MacroAssembler(c) {}
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76
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77 #ifndef CC_INTERP
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78 virtual void load_earlyret_value(TosState state);
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79
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80 static const Address l_tmp ;
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81 static const Address d_tmp ;
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82 #endif /* CC_INTERP */
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83
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84 // helper routine for frame allocation/deallocation
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85 // compute the delta by which the caller's SP has to
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86 // be adjusted to accomodate for the non-argument
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87 // locals
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88 void compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta);
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89
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90 #ifndef CC_INTERP
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91
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92 // dispatch routines
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93 void dispatch_prolog(TosState state, int step = 0);
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94 void dispatch_epilog(TosState state, int step = 0);
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95 void dispatch_only(TosState state);
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96 void dispatch_normal(TosState state);
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97 void dispatch_next(TosState state, int step = 0);
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98 void dispatch_next_noverify_oop(TosState state, int step = 0);
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99 void dispatch_via (TosState state, address* table);
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100
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101
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102 // Removes the current activation (incl. unlocking of monitors).
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103 // Additionally this code is used for earlyReturn in which case we
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104 // want to skip throwing an exception and installing an exception.
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105 void remove_activation(TosState state,
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106 bool throw_monitor_exception = true,
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107 bool install_monitor_exception = true);
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108
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109 protected:
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110 void dispatch_Lbyte_code(TosState state, address* table, int bcp_incr = 0, bool verify = true);
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111 #endif /* CC_INTERP */
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112
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113 public:
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114 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
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115 void super_call_VM(Register thread_cache,
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116 Register oop_result,
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117 Register last_java_sp,
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118 address entry_point,
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119 Register arg_1,
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120 Register arg_2,
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121 bool check_exception = true);
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122
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123 #ifndef CC_INTERP
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124 void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1);
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125
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126 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
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127 // a subtype of super_klass. Blows registers tmp1, tmp2 and tmp3.
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128 void gen_subtype_check( Register sub_klass, Register super_klass, Register tmp1, Register tmp2, Register tmp3, Label &ok_is_subtype );
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129
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130 // helpers for tossing exceptions
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131 void throw_if_not_1_icc( Condition ok_condition, Label& ok );
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132 void throw_if_not_1_xcc( Condition ok_condition, Label& ok );
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133 void throw_if_not_1_x ( Condition ok_condition, Label& ok ); // chooses icc or xcc based on _LP64
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134
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135 void throw_if_not_2( address throw_entry_point, Register Rscratch, Label& ok);
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136
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137 void throw_if_not_icc( Condition ok_condition, address throw_entry_point, Register Rscratch );
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138 void throw_if_not_xcc( Condition ok_condition, address throw_entry_point, Register Rscratch );
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139 void throw_if_not_x ( Condition ok_condition, address throw_entry_point, Register Rscratch );
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140
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141 // helpers for expression stack
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142
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143 void pop_i( Register r = Otos_i);
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144 void pop_ptr( Register r = Otos_i, Register scratch = O4);
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145 void pop_l( Register r = Otos_l1);
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146 // G4_scratch and Lscratch are used at call sites!!
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147 void pop_f(FloatRegister f = Ftos_f, Register scratch = G1_scratch);
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148 void pop_d(FloatRegister f = Ftos_d1, Register scratch = G1_scratch);
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149
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150 void push_i( Register r = Otos_i);
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151 void push_ptr( Register r = Otos_i);
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152 void push_ptr( Register r, Register tag);
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153 void push_l( Register r = Otos_l1);
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154 void push_f(FloatRegister f = Ftos_f);
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155 void push_d(FloatRegister f = Ftos_d1);
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156
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157
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158 void pop (TosState state); // transition vtos -> state
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159 void push(TosState state); // transition state -> vtos
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160 void empty_expression_stack(); // resets both Lesp and SP
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161
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162 // Support for Tagged Stacks
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163 void tag_stack(frame::Tag t, Register r);
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164 void tag_stack(Register tag);
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165 void tag_local(frame::Tag t, Register src, Register base, int n = 0);
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166
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167 #ifdef ASSERT
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168 void verify_sp(Register Rsp, Register Rtemp);
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169 void verify_esp(Register Resp); // verify that Lesp points to a word in the temp stack
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170
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171 void verify_stack_tag(frame::Tag t, Register r, Register scratch = G0);
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172 void verify_local_tag(frame::Tag t, Register base, Register scr, int n = 0);
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173 #endif // ASSERT
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174
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175 public:
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176 void if_cmp(Condition cc, bool ptr_compare);
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177
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178 // Load values from bytecode stream:
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179
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180 enum signedOrNot { Signed, Unsigned };
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181 enum setCCOrNot { set_CC, dont_set_CC };
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182
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183 void get_2_byte_integer_at_bcp( int bcp_offset,
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184 Register Rtmp,
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185 Register Rdst,
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186 signedOrNot is_signed,
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187 setCCOrNot should_set_CC = dont_set_CC );
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188
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189 void get_4_byte_integer_at_bcp( int bcp_offset,
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190 Register Rtmp,
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191 Register Rdst,
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192 setCCOrNot should_set_CC = dont_set_CC );
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193
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194 void get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset);
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195 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset);
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196
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197
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198 // common code
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199
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200 void field_offset_at(int n, Register tmp, Register dest, Register base);
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201 int field_offset_at(Register object, address bcp, int offset);
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202 void fast_iaaccess(int n, address bcp);
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203 void fast_iagetfield(address bcp);
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204 void fast_iaputfield(address bcp, bool do_store_check );
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205
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206 void index_check(Register array, Register index, int index_shift, Register tmp, Register res);
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207 void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res);
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208
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209 void get_constant_pool(Register Rdst);
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210 void get_constant_pool_cache(Register Rdst);
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211 void get_cpool_and_tags(Register Rcpool, Register Rtags);
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212 void is_a(Label& L);
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213
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214 // Load compiled (i2c) or interpreter entry and call from interpreted
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215 void call_from_interpreter(Register target, Register scratch, Register Rret);
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216
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217 // --------------------------------------------------
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218
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219 void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, bool install_monitor_exception = true);
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220
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221 void add_monitor_to_stack( bool stack_is_empty,
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222 Register Rtemp,
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223 Register Rtemp2 );
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224
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225 // Load/store aligned in _LP64 but unaligned otherwise
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226 // These only apply to the Interpreter expression stack and locals!
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227 void load_unaligned_double(Register r1, int offset, FloatRegister d);
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228 void store_unaligned_double(FloatRegister d, Register r1, int offset );
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229
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230 // Load/store aligned in _LP64 but unaligned otherwise
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231 void load_unaligned_long(Register r1, int offset, Register d);
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232 void store_unaligned_long(Register d, Register r1, int offset );
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233
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234 void access_local_int( Register index, Register dst );
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235 void access_local_ptr( Register index, Register dst );
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236 void access_local_returnAddress( Register index, Register dst );
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237 void access_local_long( Register index, Register dst );
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238 void access_local_float( Register index, FloatRegister dst );
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239 void access_local_double( Register index, FloatRegister dst );
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240 #ifdef ASSERT
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241 void check_for_regarea_stomp( Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1);
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242 #endif // ASSERT
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243 void store_local_int( Register index, Register src );
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244 void store_local_ptr( Register index, Register src, Register tag = Otos_l2 );
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245 void store_local_ptr( int n, Register src, Register tag = Otos_l2 );
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246 void store_local_long( Register index, Register src );
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247 void store_local_float( Register index, FloatRegister src );
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248 void store_local_double( Register index, FloatRegister src );
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249
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250 // Tagged stack helpers for swap and dup
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251 void load_ptr_and_tag(int n, Register val, Register tag);
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252 void store_ptr_and_tag(int n, Register val, Register tag);
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253
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254 // Tagged stack helper for getting receiver in register.
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255 void load_receiver(Register param_count, Register recv);
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256
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257 static int top_most_monitor_byte_offset(); // offset in bytes to top of monitor block
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258 Address top_most_monitor();
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259 void compute_stack_base( Register Rdest );
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260
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261 #endif /* CC_INTERP */
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262 void increment_invocation_counter( Register Rtmp, Register Rtmp2 );
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263 void increment_backedge_counter( Register Rtmp, Register Rtmp2 );
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264 #ifndef CC_INTERP
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265 void test_backedge_count_for_osr( Register backedge_count, Register branch_bcp, Register Rtmp );
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266
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267 #endif /* CC_INTERP */
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268 // Object locking
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269 void lock_object (Register lock_reg, Register obj_reg);
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270 void unlock_object(Register lock_reg);
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271
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272 #ifndef CC_INTERP
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273 // Interpreter profiling operations
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274 void set_method_data_pointer() { set_method_data_pointer_offset(noreg); }
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275 void set_method_data_pointer_for_bcp();
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276 void set_method_data_pointer_offset(Register mdi_reg);
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277 void test_method_data_pointer(Label& zero_continue);
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278 void verify_method_data_pointer();
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279 void test_invocation_counter_for_mdp(Register invocation_count, Register cur_bcp, Register Rtmp, Label &profile_continue);
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280
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281 void set_mdp_data_at(int constant, Register value);
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282 void increment_mdp_data_at(Address counter, Register bumped_count,
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283 bool decrement = false);
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284 void increment_mdp_data_at(int constant, Register bumped_count,
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285 bool decrement = false);
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286 void increment_mdp_data_at(Register reg, int constant,
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287 Register bumped_count, Register scratch2,
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288 bool decrement = false);
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289 void set_mdp_flag_at(int flag_constant, Register scratch);
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290 void test_mdp_data_at(int offset, Register value, Label& not_equal_continue,
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291 Register scratch);
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292
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293 void record_klass_in_profile(Register receiver, Register scratch);
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294 void record_klass_in_profile_helper(Register receiver, Register scratch,
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295 int start_row, Label& done);
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296
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297 void update_mdp_by_offset(int offset_of_disp, Register scratch);
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298 void update_mdp_by_offset(Register reg, int offset_of_disp,
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299 Register scratch);
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300 void update_mdp_by_constant(int constant);
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301 void update_mdp_for_ret(TosState state, Register return_bci);
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302
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303 void profile_taken_branch(Register scratch, Register bumped_count);
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304 void profile_not_taken_branch(Register scratch);
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305 void profile_call(Register scratch);
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306 void profile_final_call(Register scratch);
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307 void profile_virtual_call(Register receiver, Register scratch);
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308 void profile_ret(TosState state, Register return_bci, Register scratch);
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309 void profile_null_seen(Register scratch);
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310 void profile_typecheck(Register klass, Register scratch);
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311 void profile_typecheck_failed(Register scratch);
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312 void profile_switch_default(Register scratch);
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313 void profile_switch_case(Register index,
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314 Register scratch1,
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315 Register scratch2,
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316 Register scratch3);
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317
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318 // Debugging
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319 void interp_verify_oop(Register reg, TosState state, const char * file, int line); // only if +VerifyOops && state == atos
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320 void verify_oop_or_return_address(Register reg, Register rtmp); // for astore
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321 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
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322
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323 #endif /* CC_INTERP */
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324 // support for JVMTI/Dtrace
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325 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
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326 void notify_method_entry();
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327 void notify_method_exit(
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328 bool save_result, TosState state, NotifyMethodExitMode mode);
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329
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330 void save_return_value(TosState state, bool is_native_call);
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331 void restore_return_value(TosState state, bool is_native_call);
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332 };
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