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src/cpu/x86/vm/interp_masm_x86_32.hpp@f3de1255b035 (annotated)

src/cpu/x86/vm/interp_masm_x86_32.hpp

Wed, 07 May 2008 08:06:46 -0700

author
rasbold
date
Wed, 07 May 2008 08:06:46 -0700
changeset 580
f3de1255b035
parent 435
a61af66fc99e
child 739
dc7f315e41f7
permissions
-rw-r--r--

6603011: RFE: Optimize long division
Summary: Transform long division by constant into multiply
Reviewed-by: never, kvn

duke@435 1 /*
duke@435 2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
duke@435 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435 20 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435 21 * have any questions.
duke@435 22 *
duke@435 23 */
duke@435 24
duke@435 25 // This file specializes the assember with interpreter-specific macros
duke@435 26
duke@435 27
duke@435 28 class InterpreterMacroAssembler: public MacroAssembler {
duke@435 29 #ifndef CC_INTERP
duke@435 30 protected:
duke@435 31 // Interpreter specific version of call_VM_base
duke@435 32 virtual void call_VM_leaf_base(
duke@435 33 address entry_point,
duke@435 34 int number_of_arguments
duke@435 35 );
duke@435 36
duke@435 37 virtual void call_VM_base(
duke@435 38 Register oop_result,
duke@435 39 Register java_thread,
duke@435 40 Register last_java_sp,
duke@435 41 address entry_point,
duke@435 42 int number_of_arguments,
duke@435 43 bool check_exceptions
duke@435 44 );
duke@435 45
duke@435 46 virtual void check_and_handle_popframe(Register java_thread);
duke@435 47 virtual void check_and_handle_earlyret(Register java_thread);
duke@435 48
duke@435 49 // base routine for all dispatches
duke@435 50 void dispatch_base(TosState state, address* table, bool verifyoop = true);
duke@435 51 #endif /* CC_INTERP */
duke@435 52
duke@435 53 public:
duke@435 54 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
duke@435 55
duke@435 56 void load_earlyret_value(TosState state);
duke@435 57
duke@435 58 // Interpreter-specific registers
duke@435 59 #ifdef CC_INTERP
duke@435 60 void save_bcp() { /* not needed in c++ interpreter and harmless */ }
duke@435 61 void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
duke@435 62
duke@435 63 // Helpers for runtime call arguments/results
duke@435 64 void get_method(Register reg);
duke@435 65
duke@435 66 #else
duke@435 67
duke@435 68 void save_bcp() { movl(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
duke@435 69 void restore_bcp() { movl(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
duke@435 70 void restore_locals() { movl(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
duke@435 71
duke@435 72 // Helpers for runtime call arguments/results
duke@435 73 void get_method(Register reg) { movl(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); }
duke@435 74 void get_constant_pool(Register reg) { get_method(reg); movl(reg, Address(reg, methodOopDesc::constants_offset())); }
duke@435 75 void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movl(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); }
duke@435 76 void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movl(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
duke@435 77 }
duke@435 78 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
duke@435 79 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset);
duke@435 80 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset);
duke@435 81
duke@435 82 // Expression stack
duke@435 83 void f2ieee(); // truncate ftos to 32bits
duke@435 84 void d2ieee(); // truncate dtos to 64bits
duke@435 85 #endif // CC_INTERP
duke@435 86
duke@435 87
duke@435 88 void pop_ptr(Register r = rax);
duke@435 89 void pop_ptr(Register r, Register tag);
duke@435 90 void pop_i(Register r = rax);
duke@435 91 void pop_l(Register lo = rax, Register hi = rdx);
duke@435 92 void pop_f();
duke@435 93 void pop_d();
duke@435 94 void pop_ftos_to_rsp();
duke@435 95 void pop_dtos_to_rsp();
duke@435 96
duke@435 97 void push_ptr(Register r = rax);
duke@435 98 void push_ptr(Register r, Register tag);
duke@435 99 void push_i(Register r = rax);
duke@435 100 void push_l(Register lo = rax, Register hi = rdx);
duke@435 101 void push_d(Register r = rax);
duke@435 102 void push_f();
duke@435 103
duke@435 104 void pop(TosState state); // transition vtos -> state
duke@435 105 void push(TosState state); // transition state -> vtos
duke@435 106
duke@435 107 DEBUG_ONLY(void verify_stack_tag(frame::Tag t);)
duke@435 108
duke@435 109 #ifndef CC_INTERP
duke@435 110
duke@435 111 void empty_expression_stack() {
duke@435 112 movl(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
duke@435 113 // NULL last_sp until next java call
duke@435 114 movl(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
duke@435 115 }
duke@435 116
duke@435 117 // Tagged stack helpers for swap and dup
duke@435 118 void load_ptr_and_tag(int n, Register val, Register tag);
duke@435 119 void store_ptr_and_tag(int n, Register val, Register tag);
duke@435 120
duke@435 121 // Tagged Local support
duke@435 122
duke@435 123 void tag_local(frame::Tag tag, int n);
duke@435 124 void tag_local(Register tag, int n);
duke@435 125 void tag_local(frame::Tag tag, Register idx);
duke@435 126 void tag_local(Register tag, Register idx);
duke@435 127
duke@435 128 #ifdef ASSERT
duke@435 129 void verify_local_tag(frame::Tag tag, int n);
duke@435 130 void verify_local_tag(frame::Tag tag, Register idx);
duke@435 131 #endif // ASSERT
duke@435 132
duke@435 133 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
duke@435 134 void super_call_VM_leaf(address entry_point);
duke@435 135 void super_call_VM_leaf(address entry_point, Register arg_1);
duke@435 136 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
duke@435 137 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
duke@435 138
duke@435 139 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
duke@435 140 // a subtype of super_klass. EAX holds the super_klass. Blows ECX
duke@435 141 // and EDI. Register sub_klass cannot be any of the above.
duke@435 142 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
duke@435 143
duke@435 144 // Dispatching
duke@435 145 void dispatch_prolog(TosState state, int step = 0);
duke@435 146 void dispatch_epilog(TosState state, int step = 0);
duke@435 147 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already)
duke@435 148 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already)
duke@435 149 void dispatch_only_noverify(TosState state);
duke@435 150 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx,
duke@435 151 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table
duke@435 152
duke@435 153
duke@435 154 // jump to an invoked target
duke@435 155 void jump_from_interpreted(Register method, Register temp);
duke@435 156
duke@435 157 // Returning from interpreted functions
duke@435 158 //
duke@435 159 // Removes the current activation (incl. unlocking of monitors)
duke@435 160 // and sets up the return address. This code is also used for
duke@435 161 // exception unwindwing. In that case, we do not want to throw
duke@435 162 // IllegalMonitorStateExceptions, since that might get us into an
duke@435 163 // infinite rethrow exception loop.
duke@435 164 // Additionally this code is used for popFrame and earlyReturn.
duke@435 165 // In popFrame case we want to skip throwing an exception,
duke@435 166 // installing an exception, and notifying jvmdi.
duke@435 167 // In earlyReturn case we only want to skip throwing an exception
duke@435 168 // and installing an exception.
duke@435 169 void remove_activation(TosState state, Register ret_addr,
duke@435 170 bool throw_monitor_exception = true,
duke@435 171 bool install_monitor_exception = true,
duke@435 172 bool notify_jvmdi = true);
duke@435 173 #endif /* !CC_INTERP */
duke@435 174
duke@435 175 // Debugging
duke@435 176 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos
duke@435 177 #ifndef CC_INTERP
duke@435 178 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
duke@435 179
duke@435 180 #endif /* !CC_INTERP */
duke@435 181
duke@435 182 // Object locking
duke@435 183 void lock_object (Register lock_reg);
duke@435 184 void unlock_object(Register lock_reg);
duke@435 185
duke@435 186 #ifndef CC_INTERP
duke@435 187
duke@435 188 // Interpreter profiling operations
duke@435 189 void set_method_data_pointer_for_bcp();
duke@435 190 void test_method_data_pointer(Register mdp, Label& zero_continue);
duke@435 191 void verify_method_data_pointer();
duke@435 192
duke@435 193 void set_mdp_data_at(Register mdp_in, int constant, Register value);
duke@435 194 void increment_mdp_data_at(Address data, bool decrement = false);
duke@435 195 void increment_mdp_data_at(Register mdp_in, int constant,
duke@435 196 bool decrement = false);
duke@435 197 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
duke@435 198 bool decrement = false);
duke@435 199 void set_mdp_flag_at(Register mdp_in, int flag_constant);
duke@435 200 void test_mdp_data_at(Register mdp_in, int offset, Register value,
duke@435 201 Register test_value_out,
duke@435 202 Label& not_equal_continue);
duke@435 203
duke@435 204 void record_klass_in_profile(Register receiver, Register mdp,
duke@435 205 Register reg2);
duke@435 206 void record_klass_in_profile_helper(Register receiver, Register mdp,
duke@435 207 Register reg2,
duke@435 208 int start_row, Label& done);
duke@435 209
duke@435 210 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
duke@435 211 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
duke@435 212 void update_mdp_by_constant(Register mdp_in, int constant);
duke@435 213 void update_mdp_for_ret(Register return_bci);
duke@435 214
duke@435 215 void profile_taken_branch(Register mdp, Register bumped_count);
duke@435 216 void profile_not_taken_branch(Register mdp);
duke@435 217 void profile_call(Register mdp);
duke@435 218 void profile_final_call(Register mdp);
duke@435 219 void profile_virtual_call(Register receiver, Register mdp, Register scratch2);
duke@435 220 void profile_ret(Register return_bci, Register mdp);
duke@435 221 void profile_null_seen(Register mdp);
duke@435 222 void profile_typecheck(Register mdp, Register klass, Register scratch);
duke@435 223 void profile_typecheck_failed(Register mdp);
duke@435 224 void profile_switch_default(Register mdp);
duke@435 225 void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);
duke@435 226
duke@435 227 #endif /* !CC_INTERP */
duke@435 228
duke@435 229 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
duke@435 230
duke@435 231 // support for jvmti
duke@435 232 void notify_method_entry();
duke@435 233 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
duke@435 234
duke@435 235 };

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