Tue, 09 Apr 2013 17:17:41 -0400
8010862: The Method counter fields used for profiling can be allocated lazily.
Summary: Allocate the method's profiling related metadata until they are needed.
Reviewed-by: coleenp, roland
1 /*
2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
25 #ifndef CPU_X86_VM_INTERP_MASM_X86_64_HPP
26 #define CPU_X86_VM_INTERP_MASM_X86_64_HPP
28 #include "asm/macroAssembler.hpp"
29 #include "asm/macroAssembler.inline.hpp"
30 #include "interpreter/invocationCounter.hpp"
31 #include "runtime/frame.hpp"
33 // This file specializes the assember with interpreter-specific macros
36 class InterpreterMacroAssembler: public MacroAssembler {
37 #ifndef CC_INTERP
38 protected:
39 // Interpreter specific version of call_VM_base
40 virtual void call_VM_leaf_base(address entry_point,
41 int number_of_arguments);
43 virtual void call_VM_base(Register oop_result,
44 Register java_thread,
45 Register last_java_sp,
46 address entry_point,
47 int number_of_arguments,
48 bool check_exceptions);
50 virtual void check_and_handle_popframe(Register java_thread);
51 virtual void check_and_handle_earlyret(Register java_thread);
53 // base routine for all dispatches
54 void dispatch_base(TosState state, address* table, bool verifyoop = true);
55 #endif // CC_INTERP
57 public:
58 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
60 void load_earlyret_value(TosState state);
62 #ifdef CC_INTERP
63 void save_bcp() { /* not needed in c++ interpreter and harmless */ }
64 void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
66 // Helpers for runtime call arguments/results
67 void get_method(Register reg);
69 #else
71 // Interpreter-specific registers
72 void save_bcp() {
73 movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), r13);
74 }
76 void restore_bcp() {
77 movptr(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize));
78 }
80 void restore_locals() {
81 movptr(r14, Address(rbp, frame::interpreter_frame_locals_offset * wordSize));
82 }
84 // Helpers for runtime call arguments/results
85 void get_method(Register reg) {
86 movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize));
87 }
89 void get_const(Register reg) {
90 get_method(reg);
91 movptr(reg, Address(reg, Method::const_offset()));
92 }
94 void get_constant_pool(Register reg) {
95 get_const(reg);
96 movptr(reg, Address(reg, ConstMethod::constants_offset()));
97 }
99 void get_constant_pool_cache(Register reg) {
100 get_constant_pool(reg);
101 movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes()));
102 }
104 void get_cpool_and_tags(Register cpool, Register tags) {
105 get_constant_pool(cpool);
106 movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes()));
107 }
109 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
110 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
111 void get_cache_and_index_and_bytecode_at_bcp(Register cache, Register index, Register bytecode, int byte_no, int bcp_offset, size_t index_size = sizeof(u2));
112 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
113 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
114 void get_method_counters(Register method, Register mcs, Label& skip);
116 // load cpool->resolved_references(index);
117 void load_resolved_reference_at_index(Register result, Register index);
119 void pop_ptr(Register r = rax);
120 void pop_i(Register r = rax);
121 void pop_l(Register r = rax);
122 void pop_f(XMMRegister r = xmm0);
123 void pop_d(XMMRegister r = xmm0);
124 void push_ptr(Register r = rax);
125 void push_i(Register r = rax);
126 void push_l(Register r = rax);
127 void push_f(XMMRegister r = xmm0);
128 void push_d(XMMRegister r = xmm0);
130 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
132 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
133 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
135 void pop(TosState state); // transition vtos -> state
136 void push(TosState state); // transition state -> vtos
138 void empty_expression_stack() {
139 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
140 // NULL last_sp until next java call
141 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
142 }
144 // Helpers for swap and dup
145 void load_ptr(int n, Register val);
146 void store_ptr(int n, Register val);
148 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
149 // a subtype of super_klass.
150 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
152 // Dispatching
153 void dispatch_prolog(TosState state, int step = 0);
154 void dispatch_epilog(TosState state, int step = 0);
155 // dispatch via ebx (assume ebx is loaded already)
156 void dispatch_only(TosState state);
157 // dispatch normal table via ebx (assume ebx is loaded already)
158 void dispatch_only_normal(TosState state);
159 void dispatch_only_noverify(TosState state);
160 // load ebx from [esi + step] and dispatch via ebx
161 void dispatch_next(TosState state, int step = 0);
162 // load ebx from [esi] and dispatch via ebx and table
163 void dispatch_via (TosState state, address* table);
165 // jump to an invoked target
166 void prepare_to_jump_from_interpreted();
167 void jump_from_interpreted(Register method, Register temp);
170 // Returning from interpreted functions
171 //
172 // Removes the current activation (incl. unlocking of monitors)
173 // and sets up the return address. This code is also used for
174 // exception unwindwing. In that case, we do not want to throw
175 // IllegalMonitorStateExceptions, since that might get us into an
176 // infinite rethrow exception loop.
177 // Additionally this code is used for popFrame and earlyReturn.
178 // In popFrame case we want to skip throwing an exception,
179 // installing an exception, and notifying jvmdi.
180 // In earlyReturn case we only want to skip throwing an exception
181 // and installing an exception.
182 void remove_activation(TosState state, Register ret_addr,
183 bool throw_monitor_exception = true,
184 bool install_monitor_exception = true,
185 bool notify_jvmdi = true);
186 #endif // CC_INTERP
188 // Object locking
189 void lock_object (Register lock_reg);
190 void unlock_object(Register lock_reg);
192 #ifndef CC_INTERP
194 // Interpreter profiling operations
195 void set_method_data_pointer_for_bcp();
196 void test_method_data_pointer(Register mdp, Label& zero_continue);
197 void verify_method_data_pointer();
199 void set_mdp_data_at(Register mdp_in, int constant, Register value);
200 void increment_mdp_data_at(Address data, bool decrement = false);
201 void increment_mdp_data_at(Register mdp_in, int constant,
202 bool decrement = false);
203 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
204 bool decrement = false);
205 void increment_mask_and_jump(Address counter_addr,
206 int increment, int mask,
207 Register scratch, bool preloaded,
208 Condition cond, Label* where);
209 void set_mdp_flag_at(Register mdp_in, int flag_constant);
210 void test_mdp_data_at(Register mdp_in, int offset, Register value,
211 Register test_value_out,
212 Label& not_equal_continue);
214 void record_klass_in_profile(Register receiver, Register mdp,
215 Register reg2, bool is_virtual_call);
216 void record_klass_in_profile_helper(Register receiver, Register mdp,
217 Register reg2, int start_row,
218 Label& done, bool is_virtual_call);
220 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
221 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
222 void update_mdp_by_constant(Register mdp_in, int constant);
223 void update_mdp_for_ret(Register return_bci);
225 void profile_taken_branch(Register mdp, Register bumped_count);
226 void profile_not_taken_branch(Register mdp);
227 void profile_call(Register mdp);
228 void profile_final_call(Register mdp);
229 void profile_virtual_call(Register receiver, Register mdp,
230 Register scratch2,
231 bool receiver_can_be_null = false);
232 void profile_ret(Register return_bci, Register mdp);
233 void profile_null_seen(Register mdp);
234 void profile_typecheck(Register mdp, Register klass, Register scratch);
235 void profile_typecheck_failed(Register mdp);
236 void profile_switch_default(Register mdp);
237 void profile_switch_case(Register index_in_scratch, Register mdp,
238 Register scratch2);
240 // Debugging
241 // only if +VerifyOops && state == atos
242 void verify_oop(Register reg, TosState state = atos);
243 // only if +VerifyFPU && (state == ftos || state == dtos)
244 void verify_FPU(int stack_depth, TosState state = ftos);
246 #endif // !CC_INTERP
248 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
250 // support for jvmti/dtrace
251 void notify_method_entry();
252 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
253 };
255 #endif // CPU_X86_VM_INTERP_MASM_X86_64_HPP