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comparison src/cpu/x86/vm/interp_masm_x86_32.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // This file specializes the assember with interpreter-specific macros
26
27
28 class InterpreterMacroAssembler: public MacroAssembler {
29 #ifndef CC_INTERP
30 protected:
31 // Interpreter specific version of call_VM_base
32 virtual void call_VM_leaf_base(
33 address entry_point,
34 int number_of_arguments
35 );
36
37 virtual void call_VM_base(
38 Register oop_result,
39 Register java_thread,
40 Register last_java_sp,
41 address entry_point,
42 int number_of_arguments,
43 bool check_exceptions
44 );
45
46 virtual void check_and_handle_popframe(Register java_thread);
47 virtual void check_and_handle_earlyret(Register java_thread);
48
49 // base routine for all dispatches
50 void dispatch_base(TosState state, address* table, bool verifyoop = true);
51 #endif /* CC_INTERP */
52
53 public:
54 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
55
56 void load_earlyret_value(TosState state);
57
58 // Interpreter-specific registers
59 #ifdef CC_INTERP
60 void save_bcp() { /* not needed in c++ interpreter and harmless */ }
61 void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
62
63 // Helpers for runtime call arguments/results
64 void get_method(Register reg);
65
66 #else
67
68 void save_bcp() { movl(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
69 void restore_bcp() { movl(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
70 void restore_locals() { movl(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
71
72 // Helpers for runtime call arguments/results
73 void get_method(Register reg) { movl(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); }
74 void get_constant_pool(Register reg) { get_method(reg); movl(reg, Address(reg, methodOopDesc::constants_offset())); }
75 void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movl(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); }
76 void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movl(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
77 }
78 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
79 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset);
80 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset);
81
82 // Expression stack
83 void f2ieee(); // truncate ftos to 32bits
84 void d2ieee(); // truncate dtos to 64bits
85 #endif // CC_INTERP
86
87
88 void pop_ptr(Register r = rax);
89 void pop_ptr(Register r, Register tag);
90 void pop_i(Register r = rax);
91 void pop_l(Register lo = rax, Register hi = rdx);
92 void pop_f();
93 void pop_d();
94 void pop_ftos_to_rsp();
95 void pop_dtos_to_rsp();
96
97 void push_ptr(Register r = rax);
98 void push_ptr(Register r, Register tag);
99 void push_i(Register r = rax);
100 void push_l(Register lo = rax, Register hi = rdx);
101 void push_d(Register r = rax);
102 void push_f();
103
104 void pop(TosState state); // transition vtos -> state
105 void push(TosState state); // transition state -> vtos
106
107 DEBUG_ONLY(void verify_stack_tag(frame::Tag t);)
108
109 #ifndef CC_INTERP
110
111 void empty_expression_stack() {
112 movl(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
113 // NULL last_sp until next java call
114 movl(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
115 }
116
117 // Tagged stack helpers for swap and dup
118 void load_ptr_and_tag(int n, Register val, Register tag);
119 void store_ptr_and_tag(int n, Register val, Register tag);
120
121 // Tagged Local support
122
123 void tag_local(frame::Tag tag, int n);
124 void tag_local(Register tag, int n);
125 void tag_local(frame::Tag tag, Register idx);
126 void tag_local(Register tag, Register idx);
127
128 #ifdef ASSERT
129 void verify_local_tag(frame::Tag tag, int n);
130 void verify_local_tag(frame::Tag tag, Register idx);
131 #endif // ASSERT
132
133 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
134 void super_call_VM_leaf(address entry_point);
135 void super_call_VM_leaf(address entry_point, Register arg_1);
136 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
137 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
138
139 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
140 // a subtype of super_klass. EAX holds the super_klass. Blows ECX
141 // and EDI. Register sub_klass cannot be any of the above.
142 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
143
144 // Dispatching
145 void dispatch_prolog(TosState state, int step = 0);
146 void dispatch_epilog(TosState state, int step = 0);
147 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already)
148 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already)
149 void dispatch_only_noverify(TosState state);
150 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx,
151 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table
152
153
154 // jump to an invoked target
155 void jump_from_interpreted(Register method, Register temp);
156
157 // Returning from interpreted functions
158 //
159 // Removes the current activation (incl. unlocking of monitors)
160 // and sets up the return address. This code is also used for
161 // exception unwindwing. In that case, we do not want to throw
162 // IllegalMonitorStateExceptions, since that might get us into an
163 // infinite rethrow exception loop.
164 // Additionally this code is used for popFrame and earlyReturn.
165 // In popFrame case we want to skip throwing an exception,
166 // installing an exception, and notifying jvmdi.
167 // In earlyReturn case we only want to skip throwing an exception
168 // and installing an exception.
169 void remove_activation(TosState state, Register ret_addr,
170 bool throw_monitor_exception = true,
171 bool install_monitor_exception = true,
172 bool notify_jvmdi = true);
173 #endif /* !CC_INTERP */
174
175 // Debugging
176 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos
177 #ifndef CC_INTERP
178 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
179
180 #endif /* !CC_INTERP */
181
182 // Object locking
183 void lock_object (Register lock_reg);
184 void unlock_object(Register lock_reg);
185
186 #ifndef CC_INTERP
187
188 // Interpreter profiling operations
189 void set_method_data_pointer_for_bcp();
190 void test_method_data_pointer(Register mdp, Label& zero_continue);
191 void verify_method_data_pointer();
192
193 void set_mdp_data_at(Register mdp_in, int constant, Register value);
194 void increment_mdp_data_at(Address data, bool decrement = false);
195 void increment_mdp_data_at(Register mdp_in, int constant,
196 bool decrement = false);
197 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
198 bool decrement = false);
199 void set_mdp_flag_at(Register mdp_in, int flag_constant);
200 void test_mdp_data_at(Register mdp_in, int offset, Register value,
201 Register test_value_out,
202 Label& not_equal_continue);
203
204 void record_klass_in_profile(Register receiver, Register mdp,
205 Register reg2);
206 void record_klass_in_profile_helper(Register receiver, Register mdp,
207 Register reg2,
208 int start_row, Label& done);
209
210 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
211 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
212 void update_mdp_by_constant(Register mdp_in, int constant);
213 void update_mdp_for_ret(Register return_bci);
214
215 void profile_taken_branch(Register mdp, Register bumped_count);
216 void profile_not_taken_branch(Register mdp);
217 void profile_call(Register mdp);
218 void profile_final_call(Register mdp);
219 void profile_virtual_call(Register receiver, Register mdp, Register scratch2);
220 void profile_ret(Register return_bci, Register mdp);
221 void profile_null_seen(Register mdp);
222 void profile_typecheck(Register mdp, Register klass, Register scratch);
223 void profile_typecheck_failed(Register mdp);
224 void profile_switch_default(Register mdp);
225 void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);
226
227 #endif /* !CC_INTERP */
228
229 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
230
231 // support for jvmti
232 void notify_method_entry();
233 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
234
235 };