1/* 2 * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012, 2016 SAP SE. 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_HPP 27#define CPU_PPC_VM_INTERP_MASM_PPC_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 35class 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 jump_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 virtual void check_and_handle_popframe(Register java_thread); 49 virtual void check_and_handle_earlyret(Register java_thread); 50 51 // Base routine for all dispatches. 52 void dispatch_base(TosState state, address* table); 53 54 void load_earlyret_value(TosState state, Register Rscratch1); 55 56 static const Address l_tmp; 57 static const Address d_tmp; 58 59 // dispatch routines 60 void dispatch_next(TosState state, int step = 0); 61 void dispatch_via (TosState state, address* table); 62 void load_dispatch_table(Register dst, address* table); 63 void dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool verify = false); 64 65 // Called by shared interpreter generator. 66 void dispatch_prolog(TosState state, int step = 0); 67 void dispatch_epilog(TosState state, int step = 0); 68 69 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls. 70 void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1); 71 void super_call_VM(Register thread_cache, Register oop_result, Register last_java_sp, 72 address entry_point, Register arg_1, Register arg_2, bool check_exception = true); 73 74 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 75 // a subtype of super_klass. Blows registers tmp1, tmp2 and tmp3. 76 void gen_subtype_check(Register sub_klass, Register super_klass, 77 Register tmp1, Register tmp2, Register tmp3, Label &ok_is_subtype); 78 79 // Load object from cpool->resolved_references(index). 80 void load_resolved_reference_at_index(Register result, Register index, Label *is_null = NULL); 81 82 void load_receiver(Register Rparam_count, Register Rrecv_dst); 83 84 // helpers for expression stack 85 void pop_i( Register r = R17_tos); 86 void pop_ptr( Register r = R17_tos); 87 void pop_l( Register r = R17_tos); 88 void pop_f(FloatRegister f = F15_ftos); 89 void pop_d(FloatRegister f = F15_ftos ); 90 91 void push_i( Register r = R17_tos); 92 void push_ptr( Register r = R17_tos); 93 void push_l( Register r = R17_tos); 94 void push_f(FloatRegister f = F15_ftos ); 95 void push_d(FloatRegister f = F15_ftos); 96 97 void push_2ptrs(Register first, Register second); 98 99 void push_l_pop_d(Register l = R17_tos, FloatRegister d = F15_ftos); 100 void push_d_pop_l(FloatRegister d = F15_ftos, Register l = R17_tos); 101 102 void pop (TosState state); // transition vtos -> state 103 void push(TosState state); // transition state -> vtos 104 void empty_expression_stack(); // Resets both Lesp and SP. 105 106 public: 107 // Load values from bytecode stream: 108 109 enum signedOrNot { Signed, Unsigned }; 110 enum setCCOrNot { set_CC, dont_set_CC }; 111 112 void get_2_byte_integer_at_bcp(int bcp_offset, 113 Register Rdst, 114 signedOrNot is_signed); 115 116 void get_4_byte_integer_at_bcp(int bcp_offset, 117 Register Rdst, 118 signedOrNot is_signed = Unsigned); 119 120 void get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size); 121 122 void get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size = sizeof(u2)); 123 124 void get_u4(Register Rdst, Register Rsrc, int offset, signedOrNot is_signed); 125 126 // common code 127 128 void field_offset_at(int n, Register tmp, Register dest, Register base); 129 int field_offset_at(Register object, address bcp, int offset); 130 void fast_iaaccess(int n, address bcp); 131 void fast_iaputfield(address bcp, bool do_store_check); 132 133 void index_check(Register array, Register index, int index_shift, Register tmp, Register res); 134 void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res); 135 136 void get_const(Register Rdst); 137 void get_constant_pool(Register Rdst); 138 void get_constant_pool_cache(Register Rdst); 139 void get_cpool_and_tags(Register Rcpool, Register Rtags); 140 void is_a(Label& L); 141 142 void narrow(Register result); 143 144 // Java Call Helpers 145 void call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2); 146 147 // -------------------------------------------------- 148 149 void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, 150 bool install_monitor_exception = true); 151 152 // Removes the current activation (incl. unlocking of monitors). 153 // Additionally this code is used for earlyReturn in which case we 154 // want to skip throwing an exception and installing an exception. 155 void remove_activation(TosState state, 156 bool throw_monitor_exception = true, 157 bool install_monitor_exception = true); 158 void merge_frames(Register Rtop_frame_sp, Register return_pc, Register Rscratch1, Register Rscratch2); // merge top frames 159 160 void add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2); 161 162 // Local variable access helpers 163 void load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex); 164 void load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex); 165 void load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex); 166 void load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex); 167 void load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex); 168 void store_local_int(Register Rvalue, Register Rindex); 169 void store_local_long(Register Rvalue, Register Rindex); 170 void store_local_ptr(Register Rvalue, Register Rindex); 171 void store_local_float(FloatRegister Rvalue, Register Rindex); 172 void store_local_double(FloatRegister Rvalue, Register Rindex); 173 174 // Call VM for std frames 175 // Special call VM versions that check for exceptions and forward exception 176 // via short cut (not via expensive forward exception stub). 177 void check_and_forward_exception(Register Rscratch1, Register Rscratch2); 178 void call_VM(Register oop_result, address entry_point, bool check_exceptions = true); 179 void call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions = true); 180 void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true); 181 void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true); 182 // Should not be used: 183 void call_VM(Register oop_result, Register last_java_sp, address entry_point, bool check_exceptions = true) {ShouldNotReachHere();} 184 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true) {ShouldNotReachHere();} 185 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true) {ShouldNotReachHere();} 186 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();} 187 188 Address first_local_in_stack(); 189 190 enum LoadOrStore { load, store }; 191 void static_iload_or_store(int which_local, LoadOrStore direction, Register Rtmp); 192 void static_aload_or_store(int which_local, LoadOrStore direction, Register Rtmp); 193 void static_dload_or_store(int which_local, LoadOrStore direction); 194 195 void save_interpreter_state(Register scratch); 196 void restore_interpreter_state(Register scratch, bool bcp_and_mdx_only = false); 197 198 void increment_backedge_counter(const Register Rcounters, Register Rtmp, Register Rtmp2, Register Rscratch); 199 void test_backedge_count_for_osr(Register backedge_count, Register method_counters, Register target_bcp, Register disp, Register Rtmp); 200 201 void record_static_call_in_profile(Register Rentry, Register Rtmp); 202 void record_receiver_call_in_profile(Register Rklass, Register Rentry, Register Rtmp); 203 204 void get_method_counters(Register method, Register Rcounters, Label& skip); 205 void increment_invocation_counter(Register iv_be_count, Register Rtmp1, Register Rtmp2_r0); 206 207 // Object locking 208 void lock_object (Register lock_reg, Register obj_reg); 209 void unlock_object(Register lock_reg, bool check_for_exceptions = true); 210 211 // Interpreter profiling operations 212 void set_method_data_pointer_for_bcp(); 213 void test_method_data_pointer(Label& zero_continue); 214 void verify_method_data_pointer(); 215 void test_invocation_counter_for_mdp(Register invocation_count, Register method_counters, Register Rscratch, Label &profile_continue); 216 217 void set_mdp_data_at(int constant, Register value); 218 219 void increment_mdp_data_at(int constant, Register counter_addr, Register Rbumped_count, bool decrement = false); 220 221 void increment_mdp_data_at(Register counter_addr, Register Rbumped_count, bool decrement = false); 222 void increment_mdp_data_at(Register reg, int constant, Register scratch, Register Rbumped_count, bool decrement = false); 223 224 void set_mdp_flag_at(int flag_constant, Register scratch); 225 void test_mdp_data_at(int offset, Register value, Label& not_equal_continue, Register test_out); 226 227 void update_mdp_by_offset(int offset_of_disp, Register scratch); 228 void update_mdp_by_offset(Register reg, int offset_of_disp, 229 Register scratch); 230 void update_mdp_by_constant(int constant); 231 void update_mdp_for_ret(TosState state, Register return_bci); 232 233 void profile_taken_branch(Register scratch, Register bumped_count); 234 void profile_not_taken_branch(Register scratch1, Register scratch2); 235 void profile_call(Register scratch1, Register scratch2); 236 void profile_final_call(Register scratch1, Register scratch2); 237 void profile_virtual_call(Register Rreceiver, Register Rscratch1, Register Rscratch2, bool receiver_can_be_null); 238 void profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2); 239 void profile_typecheck_failed(Register Rscratch1, Register Rscratch2); 240 void profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2); 241 void profile_switch_default(Register scratch1, Register scratch2); 242 void profile_switch_case(Register index, Register scratch1,Register scratch2, Register scratch3); 243 void profile_null_seen(Register Rscratch1, Register Rscratch2); 244 void record_klass_in_profile(Register receiver, Register scratch1, Register scratch2, bool is_virtual_call); 245 void record_klass_in_profile_helper(Register receiver, Register scratch1, Register scratch2, int start_row, Label& done, bool is_virtual_call); 246 247 // Argument and return type profiling. 248 void profile_obj_type(Register obj, Register mdo_addr_base, RegisterOrConstant mdo_addr_offs, Register tmp, Register tmp2); 249 void profile_arguments_type(Register callee, Register tmp1, Register tmp2, bool is_virtual); 250 void profile_return_type(Register ret, Register tmp1, Register tmp2); 251 void profile_parameters_type(Register tmp1, Register tmp2, Register tmp3, Register tmp4); 252 253 // Debugging 254 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos 255 void verify_oop_or_return_address(Register reg, Register rtmp); // for astore 256 void verify_FPU(int stack_depth, TosState state = ftos); 257 258 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 259 260 // Support for jvmdi/jvmpi. 261 void notify_method_entry(); 262 void notify_method_exit(bool is_native_method, TosState state, 263 NotifyMethodExitMode mode, bool check_exceptions); 264}; 265 266#endif // CPU_PPC_VM_INTERP_MASM_PPC_HPP 267