Thu, 15 Aug 2013 20:04:10 -0400
8003424: Enable Class Data Sharing for CompressedOops
8016729: ObjectAlignmentInBytes=16 now forces the use of heap based compressed oops
8005933: The -Xshare:auto option is ignored for -server
Summary: Move klass metaspace above the heap and support CDS with compressed klass ptrs.
Reviewed-by: coleenp, kvn, mgerdin, tschatzl, stefank
1 /*
2 * Copyright (c) 1997, 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_32_HPP
26 #define CPU_X86_VM_INTERP_MASM_X86_32_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(
41 address entry_point,
42 int number_of_arguments
43 );
45 virtual void call_VM_base(
46 Register oop_result,
47 Register java_thread,
48 Register last_java_sp,
49 address entry_point,
50 int number_of_arguments,
51 bool check_exceptions
52 );
54 virtual void check_and_handle_popframe(Register java_thread);
55 virtual void check_and_handle_earlyret(Register java_thread);
57 // base routine for all dispatches
58 void dispatch_base(TosState state, address* table, bool verifyoop = true);
59 #endif /* CC_INTERP */
61 public:
62 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
64 void load_earlyret_value(TosState state);
66 // Interpreter-specific registers
67 #ifdef CC_INTERP
68 void save_bcp() { /* not needed in c++ interpreter and harmless */ }
69 void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
71 // Helpers for runtime call arguments/results
72 void get_method(Register reg);
74 #else
76 void save_bcp() { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
77 void restore_bcp() { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
78 void restore_locals() { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
80 // Helpers for runtime call arguments/results
81 void get_method(Register reg) { movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); }
82 void get_const(Register reg) { get_method(reg); movptr(reg, Address(reg, Method::const_offset())); }
83 void get_constant_pool(Register reg) { get_const(reg); movptr(reg, Address(reg, ConstMethod::constants_offset())); }
84 void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); }
85 void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes()));
86 }
87 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
88 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
89 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));
90 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
91 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
92 void get_method_counters(Register method, Register mcs, Label& skip);
94 // load cpool->resolved_references(index);
95 void load_resolved_reference_at_index(Register result, Register index);
97 // Expression stack
98 void f2ieee(); // truncate ftos to 32bits
99 void d2ieee(); // truncate dtos to 64bits
101 void pop_ptr(Register r = rax);
102 void pop_i(Register r = rax);
103 void pop_l(Register lo = rax, Register hi = rdx);
104 void pop_f();
105 void pop_d();
107 void push_ptr(Register r = rax);
108 void push_i(Register r = rax);
109 void push_l(Register lo = rax, Register hi = rdx);
110 void push_d(Register r = rax);
111 void push_f();
113 void pop(TosState state); // transition vtos -> state
114 void push(TosState state); // transition state -> vtos
116 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
118 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
119 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
121 // These are dummies to prevent surprise implicit conversions to Register
122 void pop(void* v ); // Add unimplemented ambiguous method
123 void push(void* v ); // Add unimplemented ambiguous method
125 void empty_expression_stack() {
126 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
127 // NULL last_sp until next java call
128 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
129 }
131 // Helpers for swap and dup
132 void load_ptr(int n, Register val);
133 void store_ptr(int n, Register val);
135 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
136 // a subtype of super_klass. EAX holds the super_klass. Blows ECX
137 // and EDI. Register sub_klass cannot be any of the above.
138 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
140 // Dispatching
141 void dispatch_prolog(TosState state, int step = 0);
142 void dispatch_epilog(TosState state, int step = 0);
143 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already)
144 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already)
145 void dispatch_only_noverify(TosState state);
146 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx,
147 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table
150 // jump to an invoked target
151 void prepare_to_jump_from_interpreted();
152 void jump_from_interpreted(Register method, Register temp);
154 // Returning from interpreted functions
155 //
156 // Removes the current activation (incl. unlocking of monitors)
157 // and sets up the return address. This code is also used for
158 // exception unwindwing. In that case, we do not want to throw
159 // IllegalMonitorStateExceptions, since that might get us into an
160 // infinite rethrow exception loop.
161 // Additionally this code is used for popFrame and earlyReturn.
162 // In popFrame case we want to skip throwing an exception,
163 // installing an exception, and notifying jvmdi.
164 // In earlyReturn case we only want to skip throwing an exception
165 // and installing an exception.
166 void remove_activation(TosState state, Register ret_addr,
167 bool throw_monitor_exception = true,
168 bool install_monitor_exception = true,
169 bool notify_jvmdi = true);
170 #endif /* !CC_INTERP */
172 // Debugging
173 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos
174 #ifndef CC_INTERP
175 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
177 #endif /* !CC_INTERP */
179 // Object locking
180 void lock_object (Register lock_reg);
181 void unlock_object(Register lock_reg);
183 #ifndef CC_INTERP
185 // Interpreter profiling operations
186 void set_method_data_pointer_for_bcp();
187 void test_method_data_pointer(Register mdp, Label& zero_continue);
188 void verify_method_data_pointer();
190 void set_mdp_data_at(Register mdp_in, int constant, Register value);
191 void increment_mdp_data_at(Address data, bool decrement = false);
192 void increment_mdp_data_at(Register mdp_in, int constant,
193 bool decrement = false);
194 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
195 bool decrement = false);
196 void increment_mask_and_jump(Address counter_addr,
197 int increment, int mask,
198 Register scratch, bool preloaded,
199 Condition cond, Label* where);
200 void set_mdp_flag_at(Register mdp_in, int flag_constant);
201 void test_mdp_data_at(Register mdp_in, int offset, Register value,
202 Register test_value_out,
203 Label& not_equal_continue);
205 void record_klass_in_profile(Register receiver, Register mdp,
206 Register reg2, bool is_virtual_call);
207 void record_klass_in_profile_helper(Register receiver, Register mdp,
208 Register reg2, int start_row,
209 Label& done, bool is_virtual_call);
211 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
212 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
213 void update_mdp_by_constant(Register mdp_in, int constant);
214 void update_mdp_for_ret(Register return_bci);
216 void profile_taken_branch(Register mdp, Register bumped_count);
217 void profile_not_taken_branch(Register mdp);
218 void profile_call(Register mdp);
219 void profile_final_call(Register mdp);
220 void profile_virtual_call(Register receiver, Register mdp, Register scratch2,
221 bool receiver_can_be_null = false);
222 void profile_ret(Register return_bci, Register mdp);
223 void profile_null_seen(Register mdp);
224 void profile_typecheck(Register mdp, Register klass, Register scratch);
225 void profile_typecheck_failed(Register mdp);
226 void profile_switch_default(Register mdp);
227 void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);
229 #endif /* !CC_INTERP */
231 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
233 // support for jvmti
234 void notify_method_entry();
235 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
237 };
239 #endif // CPU_X86_VM_INTERP_MASM_X86_32_HPP