1 /* 2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2012, 2014 SAP AG. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_PPC_VM_INTERP_MASM_PPC_64_HPP 27 #define CPU_PPC_VM_INTERP_MASM_PPC_64_HPP 28 29 #include "asm/macroAssembler.hpp" 30 #include "interpreter/invocationCounter.hpp" 31 32 // This file specializes the assembler with interpreter-specific macros. 33 34 35 class InterpreterMacroAssembler: public MacroAssembler { 36 37 public: 38 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} 39 40 void null_check_throw(Register a, int offset, Register temp_reg); 41 42 void branch_to_entry(address entry, Register Rscratch); 43 44 // Handy address generation macros. 45 #define thread_(field_name) in_bytes(JavaThread::field_name ## _offset()), R16_thread 46 #define method_(field_name) in_bytes(Method::field_name ## _offset()), R19_method 47 48 #ifdef CC_INTERP 49 #define state_(field_name) in_bytes(byte_offset_of(BytecodeInterpreter, field_name)), R14_state 50 #define prev_state_(field_name) in_bytes(byte_offset_of(BytecodeInterpreter, field_name)), R15_prev_state 51 void pop (TosState state) {}; // Not needed. 52 void push(TosState state) {}; // Not needed. 53 #endif 54 55 #ifndef CC_INTERP 56 virtual void check_and_handle_popframe(Register java_thread); 57 virtual void check_and_handle_earlyret(Register java_thread); 58 59 // Base routine for all dispatches. 60 void dispatch_base(TosState state, address* table); 61 62 void load_earlyret_value(TosState state, Register Rscratch1); 63 64 static const Address l_tmp; 65 static const Address d_tmp; 66 67 // dispatch routines 68 void dispatch_next(TosState state, int step = 0); 69 void dispatch_via (TosState state, address* table); 70 void load_dispatch_table(Register dst, address* table); 71 void dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool verify = false); 72 73 // Called by shared interpreter generator. 74 void dispatch_prolog(TosState state, int step = 0); 75 void dispatch_epilog(TosState state, int step = 0); 76 77 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls. 78 void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1); 79 void super_call_VM(Register thread_cache, Register oop_result, Register last_java_sp, 80 address entry_point, Register arg_1, Register arg_2, bool check_exception = true); 81 82 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 83 // a subtype of super_klass. Blows registers tmp1, tmp2 and tmp3. 84 void gen_subtype_check(Register sub_klass, Register super_klass, 85 Register tmp1, Register tmp2, Register tmp3, Label &ok_is_subtype); 86 87 // Load object from cpool->resolved_references(index). 88 void load_resolved_reference_at_index(Register result, Register index); 89 90 void generate_stack_overflow_check_with_compare_and_throw(Register Rmem_frame_size, Register Rscratch1); 91 void load_receiver(Register Rparam_count, Register Rrecv_dst); 92 93 // helpers for expression stack 94 void pop_i( Register r = R17_tos); 95 void pop_ptr( Register r = R17_tos); 96 void pop_l( Register r = R17_tos); 97 void pop_f(FloatRegister f = F15_ftos); 98 void pop_d(FloatRegister f = F15_ftos ); 99 100 void push_i( Register r = R17_tos); 101 void push_ptr( Register r = R17_tos); 102 void push_l( Register r = R17_tos); 103 void push_f(FloatRegister f = F15_ftos ); 104 void push_d(FloatRegister f = F15_ftos); 105 106 void push_2ptrs(Register first, Register second); 107 108 void push_l_pop_d(Register l = R17_tos, FloatRegister d = F15_ftos); 109 void push_d_pop_l(FloatRegister d = F15_ftos, Register l = R17_tos); 110 111 void pop (TosState state); // transition vtos -> state 112 void push(TosState state); // transition state -> vtos 113 void empty_expression_stack(); // Resets both Lesp and SP. 114 115 public: 116 // Load values from bytecode stream: 117 118 enum signedOrNot { Signed, Unsigned }; 119 enum setCCOrNot { set_CC, dont_set_CC }; 120 121 void get_2_byte_integer_at_bcp(int bcp_offset, 122 Register Rdst, 123 signedOrNot is_signed); 124 125 void get_4_byte_integer_at_bcp(int bcp_offset, 126 Register Rdst, 127 signedOrNot is_signed = Unsigned); 128 129 void get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size); 130 131 void get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size = sizeof(u2)); 132 133 134 // common code 135 136 void field_offset_at(int n, Register tmp, Register dest, Register base); 137 int field_offset_at(Register object, address bcp, int offset); 138 void fast_iaaccess(int n, address bcp); 139 void fast_iagetfield(address bcp); 140 void fast_iaputfield(address bcp, bool do_store_check); 141 142 void index_check(Register array, Register index, int index_shift, Register tmp, Register res); 143 void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res); 144 145 void get_const(Register Rdst); 146 void get_constant_pool(Register Rdst); 147 void get_constant_pool_cache(Register Rdst); 148 void get_cpool_and_tags(Register Rcpool, Register Rtags); 149 void is_a(Label& L); 150 151 // Java Call Helpers 152 void call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2); 153 154 // -------------------------------------------------- 155 156 void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, 157 bool install_monitor_exception = true); 158 159 // Removes the current activation (incl. unlocking of monitors). 160 // Additionally this code is used for earlyReturn in which case we 161 // want to skip throwing an exception and installing an exception. 162 void remove_activation(TosState state, 163 bool throw_monitor_exception = true, 164 bool install_monitor_exception = true); 165 void merge_frames(Register Rtop_frame_sp, Register return_pc, Register Rscratch1, Register Rscratch2); // merge top frames 166 167 void add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2); 168 169 // Local variable access helpers 170 void load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex); 171 void load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex); 172 void load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex); 173 void load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex); 174 void load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex); 175 void store_local_int(Register Rvalue, Register Rindex); 176 void store_local_long(Register Rvalue, Register Rindex); 177 void store_local_ptr(Register Rvalue, Register Rindex); 178 void store_local_float(FloatRegister Rvalue, Register Rindex); 179 void store_local_double(FloatRegister Rvalue, Register Rindex); 180 181 // Call VM for std frames 182 // Special call VM versions that check for exceptions and forward exception 183 // via short cut (not via expensive forward exception stub). 184 void check_and_forward_exception(Register Rscratch1, Register Rscratch2); 185 void call_VM(Register oop_result, address entry_point, bool check_exceptions = true); 186 void call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions = true); 187 void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true); 188 void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true); 189 // Should not be used: 190 void call_VM(Register oop_result, Register last_java_sp, address entry_point, bool check_exceptions = true) {ShouldNotReachHere();} 191 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true) {ShouldNotReachHere();} 192 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true) {ShouldNotReachHere();} 193 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true) {ShouldNotReachHere();} 194 195 Address first_local_in_stack(); 196 197 enum LoadOrStore { load, store }; 198 void static_iload_or_store(int which_local, LoadOrStore direction, Register Rtmp); 199 void static_aload_or_store(int which_local, LoadOrStore direction, Register Rtmp); 200 void static_dload_or_store(int which_local, LoadOrStore direction); 201 202 void save_interpreter_state(Register scratch); 203 void restore_interpreter_state(Register scratch, bool bcp_and_mdx_only = false); 204 205 void increment_backedge_counter(const Register Rcounters, Register Rtmp, Register Rtmp2, Register Rscratch); 206 void test_backedge_count_for_osr(Register backedge_count, Register branch_bcp, Register Rtmp); 207 208 void record_static_call_in_profile(Register Rentry, Register Rtmp); 209 void record_receiver_call_in_profile(Register Rklass, Register Rentry, Register Rtmp); 210 #endif // !CC_INTERP 211 212 void get_method_counters(Register method, Register Rcounters, Label& skip); 213 void increment_invocation_counter(Register iv_be_count, Register Rtmp1, Register Rtmp2_r0); 214 215 // Object locking 216 void lock_object (Register lock_reg, Register obj_reg); 217 void unlock_object(Register lock_reg, bool check_for_exceptions = true); 218 219 #ifndef CC_INTERP 220 221 // Interpreter profiling operations 222 void set_method_data_pointer_for_bcp(); 223 void test_method_data_pointer(Label& zero_continue); 224 void verify_method_data_pointer(); 225 void test_invocation_counter_for_mdp(Register invocation_count, Register Rscratch, Label &profile_continue); 226 227 void set_mdp_data_at(int constant, Register value); 228 229 void increment_mdp_data_at(int constant, Register counter_addr, Register Rbumped_count, bool decrement = false); 230 231 void increment_mdp_data_at(Register counter_addr, Register Rbumped_count, bool decrement = false); 232 void increment_mdp_data_at(Register reg, int constant, Register scratch, Register Rbumped_count, bool decrement = false); 233 234 void set_mdp_flag_at(int flag_constant, Register scratch); 235 void test_mdp_data_at(int offset, Register value, Label& not_equal_continue, Register test_out); 236 237 void update_mdp_by_offset(int offset_of_disp, Register scratch); 238 void update_mdp_by_offset(Register reg, int offset_of_disp, 239 Register scratch); 240 void update_mdp_by_constant(int constant); 241 void update_mdp_for_ret(TosState state, Register return_bci); 242 243 void profile_taken_branch(Register scratch, Register bumped_count); 244 void profile_not_taken_branch(Register scratch1, Register scratch2); 245 void profile_call(Register scratch1, Register scratch2); 246 void profile_final_call(Register scratch1, Register scratch2); 247 void profile_virtual_call(Register Rreceiver, Register Rscratch1, Register Rscratch2, bool receiver_can_be_null); 248 void profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2); 249 void profile_typecheck_failed(Register Rscratch1, Register Rscratch2); 250 void profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2); 251 void profile_switch_default(Register scratch1, Register scratch2); 252 void profile_switch_case(Register index, Register scratch1,Register scratch2, Register scratch3); 253 void profile_null_seen(Register Rscratch1, Register Rscratch2); 254 void record_klass_in_profile(Register receiver, Register scratch1, Register scratch2, bool is_virtual_call); 255 void record_klass_in_profile_helper(Register receiver, Register scratch1, Register scratch2, int start_row, Label& done, bool is_virtual_call); 256 257 #endif // !CC_INTERP 258 259 // Debugging 260 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos 261 #ifndef CC_INTERP 262 void verify_oop_or_return_address(Register reg, Register rtmp); // for astore 263 void verify_FPU(int stack_depth, TosState state = ftos); 264 #endif // !CC_INTERP 265 266 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 267 268 // Support for jvmdi/jvmpi. 269 void notify_method_entry(); 270 void notify_method_exit(bool is_native_method, TosState state, 271 NotifyMethodExitMode mode, bool check_exceptions); 272 273 #ifdef CC_INTERP 274 // Convert the current TOP_IJAVA_FRAME into a PARENT_IJAVA_FRAME 275 // (using parent_frame_resize) and push a new interpreter 276 // TOP_IJAVA_FRAME (using frame_size). 277 void push_interpreter_frame(Register top_frame_size, Register parent_frame_resize, 278 Register tmp1, Register tmp2, Register tmp3, Register tmp4, Register pc=noreg); 279 280 // Pop the topmost TOP_IJAVA_FRAME and convert the previous 281 // PARENT_IJAVA_FRAME back into a TOP_IJAVA_FRAME. 282 void pop_interpreter_frame(Register tmp1, Register tmp2, Register tmp3, Register tmp4); 283 284 // Turn state's interpreter frame into the current TOP_IJAVA_FRAME. 285 void pop_interpreter_frame_to_state(Register state, Register tmp1, Register tmp2, Register tmp3); 286 287 // Set SP to initial caller's sp, but before fix the back chain. 288 void resize_frame_to_initial_caller(Register tmp1, Register tmp2); 289 290 // Pop the current interpreter state (without popping the 291 // correspoding frame) and restore R14_state and R15_prev_state 292 // accordingly. Use prev_state_may_be_0 to indicate whether 293 // prev_state may be 0 in order to generate an extra check before 294 // retrieving prev_state_(_prev_link). 295 void pop_interpreter_state(bool prev_state_may_be_0); 296 297 void restore_prev_state(); 298 #endif 299 }; 300 301 #endif // CPU_PPC_VM_INTERP_MASM_PPC_64_HPP