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1 /* |
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2 * Copyright 2003-2007 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 |
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28 class InterpreterMacroAssembler |
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29 : public MacroAssembler { |
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30 protected: |
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31 // Interpreter specific version of call_VM_base |
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32 virtual void call_VM_leaf_base(address entry_point, |
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33 int number_of_arguments); |
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34 |
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35 virtual void call_VM_base(Register oop_result, |
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36 Register java_thread, |
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37 Register last_java_sp, |
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38 address entry_point, |
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39 int number_of_arguments, |
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40 bool check_exceptions); |
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41 |
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42 virtual void check_and_handle_popframe(Register java_thread); |
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43 virtual void check_and_handle_earlyret(Register java_thread); |
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44 |
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45 // base routine for all dispatches |
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46 void dispatch_base(TosState state, address* table, bool verifyoop = true); |
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47 |
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48 public: |
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49 InterpreterMacroAssembler(CodeBuffer* code) |
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50 : MacroAssembler(code) |
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51 {} |
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52 |
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53 void load_earlyret_value(TosState state); |
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54 |
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55 // Interpreter-specific registers |
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56 void save_bcp() |
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57 { |
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58 movq(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), r13); |
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59 } |
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60 |
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61 void restore_bcp() |
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62 { |
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63 movq(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); |
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64 } |
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65 |
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66 void restore_locals() |
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67 { |
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68 movq(r14, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); |
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69 } |
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70 |
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71 // Helpers for runtime call arguments/results |
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72 void get_method(Register reg) |
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73 { |
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74 movq(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); |
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75 } |
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76 |
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77 void get_constant_pool(Register reg) |
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78 { |
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79 get_method(reg); |
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80 movq(reg, Address(reg, methodOopDesc::constants_offset())); |
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81 } |
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82 |
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83 void get_constant_pool_cache(Register reg) |
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84 { |
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85 get_constant_pool(reg); |
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86 movq(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); |
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87 } |
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88 |
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89 void get_cpool_and_tags(Register cpool, Register tags) |
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90 { |
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91 get_constant_pool(cpool); |
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92 movq(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes())); |
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93 } |
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94 |
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95 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); |
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96 void get_cache_and_index_at_bcp(Register cache, Register index, |
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97 int bcp_offset); |
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98 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
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99 int bcp_offset); |
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100 |
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101 void pop_ptr(Register r = rax); |
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102 void pop_i(Register r = rax); |
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103 void pop_l(Register r = rax); |
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104 void pop_f(XMMRegister r = xmm0); |
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105 void pop_d(XMMRegister r = xmm0); |
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106 void push_ptr(Register r = rax); |
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107 void push_i(Register r = rax); |
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108 void push_l(Register r = rax); |
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109 void push_f(XMMRegister r = xmm0); |
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110 void push_d(XMMRegister r = xmm0); |
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111 |
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112 void pop(TosState state); // transition vtos -> state |
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113 void push(TosState state); // transition state -> vtos |
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114 |
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115 // Tagged stack support, pop and push both tag and value. |
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116 void pop_ptr(Register r, Register tag); |
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117 void push_ptr(Register r, Register tag); |
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118 |
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119 DEBUG_ONLY(void verify_stack_tag(frame::Tag t);) |
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120 |
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121 // Tagged stack helpers for swap and dup |
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122 void load_ptr_and_tag(int n, Register val, Register tag); |
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123 void store_ptr_and_tag(int n, Register val, Register tag); |
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124 |
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125 // Tagged Local support |
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126 void tag_local(frame::Tag tag, int n); |
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127 void tag_local(Register tag, int n); |
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128 void tag_local(frame::Tag tag, Register idx); |
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129 void tag_local(Register tag, Register idx); |
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130 |
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131 #ifdef ASSERT |
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132 void verify_local_tag(frame::Tag tag, int n); |
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133 void verify_local_tag(frame::Tag tag, Register idx); |
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134 #endif // ASSERT |
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135 |
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136 void empty_expression_stack() |
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137 { |
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138 movq(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * |
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139 wordSize)); |
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140 // NULL last_sp until next java call |
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141 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
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142 } |
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143 |
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144 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls |
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145 void super_call_VM_leaf(address entry_point); |
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146 void super_call_VM_leaf(address entry_point, Register arg_1); |
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147 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2); |
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148 void super_call_VM_leaf(address entry_point, |
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149 Register arg_1, Register arg_2, Register arg_3); |
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150 |
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151 // Generate a subtype check: branch to ok_is_subtype if sub_klass is |
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152 // a subtype of super_klass. |
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153 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); |
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154 |
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155 // Dispatching |
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156 void dispatch_prolog(TosState state, int step = 0); |
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157 void dispatch_epilog(TosState state, int step = 0); |
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158 // dispatch via ebx (assume ebx is loaded already) |
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159 void dispatch_only(TosState state); |
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160 // dispatch normal table via ebx (assume ebx is loaded already) |
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161 void dispatch_only_normal(TosState state); |
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162 void dispatch_only_noverify(TosState state); |
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163 // load ebx from [esi + step] and dispatch via ebx |
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164 void dispatch_next(TosState state, int step = 0); |
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165 // load ebx from [esi] and dispatch via ebx and table |
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166 void dispatch_via (TosState state, address* table); |
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167 |
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168 // jump to an invoked target |
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169 void jump_from_interpreted(Register method, Register temp); |
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170 |
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171 |
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172 // Returning from interpreted functions |
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173 // |
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174 // Removes the current activation (incl. unlocking of monitors) |
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175 // and sets up the return address. This code is also used for |
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176 // exception unwindwing. In that case, we do not want to throw |
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177 // IllegalMonitorStateExceptions, since that might get us into an |
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178 // infinite rethrow exception loop. |
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179 // Additionally this code is used for popFrame and earlyReturn. |
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180 // In popFrame case we want to skip throwing an exception, |
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181 // installing an exception, and notifying jvmdi. |
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182 // In earlyReturn case we only want to skip throwing an exception |
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183 // and installing an exception. |
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184 void remove_activation(TosState state, Register ret_addr, |
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185 bool throw_monitor_exception = true, |
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186 bool install_monitor_exception = true, |
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187 bool notify_jvmdi = true); |
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188 |
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189 // Object locking |
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190 void lock_object (Register lock_reg); |
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191 void unlock_object(Register lock_reg); |
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192 |
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193 // Interpreter profiling operations |
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194 void set_method_data_pointer_for_bcp(); |
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195 void test_method_data_pointer(Register mdp, Label& zero_continue); |
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196 void verify_method_data_pointer(); |
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197 |
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198 void set_mdp_data_at(Register mdp_in, int constant, Register value); |
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199 void increment_mdp_data_at(Address data, bool decrement = false); |
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200 void increment_mdp_data_at(Register mdp_in, int constant, |
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201 bool decrement = false); |
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202 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, |
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203 bool decrement = false); |
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204 void set_mdp_flag_at(Register mdp_in, int flag_constant); |
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205 void test_mdp_data_at(Register mdp_in, int offset, Register value, |
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206 Register test_value_out, |
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207 Label& not_equal_continue); |
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208 |
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209 void record_klass_in_profile(Register receiver, Register mdp, |
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210 Register reg2); |
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211 void record_klass_in_profile_helper(Register receiver, Register mdp, |
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212 Register reg2, |
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213 int start_row, Label& done); |
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214 |
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215 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); |
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216 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); |
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217 void update_mdp_by_constant(Register mdp_in, int constant); |
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218 void update_mdp_for_ret(Register return_bci); |
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219 |
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220 void profile_taken_branch(Register mdp, Register bumped_count); |
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221 void profile_not_taken_branch(Register mdp); |
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222 void profile_call(Register mdp); |
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223 void profile_final_call(Register mdp); |
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224 void profile_virtual_call(Register receiver, Register mdp, |
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225 Register scratch2); |
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226 void profile_ret(Register return_bci, Register mdp); |
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227 void profile_null_seen(Register mdp); |
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228 void profile_typecheck(Register mdp, Register klass, Register scratch); |
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229 void profile_typecheck_failed(Register mdp); |
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230 void profile_switch_default(Register mdp); |
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231 void profile_switch_case(Register index_in_scratch, Register mdp, |
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232 Register scratch2); |
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233 |
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234 // Debugging |
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235 // only if +VerifyOops && state == atos |
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236 void verify_oop(Register reg, TosState state = atos); |
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237 // only if +VerifyFPU && (state == ftos || state == dtos) |
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238 void verify_FPU(int stack_depth, TosState state = ftos); |
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239 |
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240 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; |
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241 |
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242 // support for jvmti/dtrace |
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243 void notify_method_entry(); |
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244 void notify_method_exit(TosState state, NotifyMethodExitMode mode); |
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245 }; |