interp_masm_sparc.hpp revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 1997, 2010, 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.
22 *
23 */
24
25// This file specializes the assember with interpreter-specific macros
26
27REGISTER_DECLARATION(     Register, Otos_i , O0); // tos for ints, etc
28REGISTER_DECLARATION(     Register, Otos_l , O0); // for longs
29REGISTER_DECLARATION(     Register, Otos_l1, O0); // for 1st part of longs
30REGISTER_DECLARATION(     Register, Otos_l2, O1); // for 2nd part of longs
31REGISTER_DECLARATION(FloatRegister, Ftos_f , F0); // for floats
32REGISTER_DECLARATION(FloatRegister, Ftos_d , F0); // for doubles
33REGISTER_DECLARATION(FloatRegister, Ftos_d1, F0); // for 1st part of double
34REGISTER_DECLARATION(FloatRegister, Ftos_d2, F1); // for 2nd part of double
35
36#ifndef DONT_USE_REGISTER_DEFINES
37#define Otos_i  O0
38#define Otos_l  O0
39#define Otos_l1 O0
40#define Otos_l2 O1
41#define Ftos_f  F0
42#define Ftos_d  F0
43#define Ftos_d1 F0
44#define Ftos_d2 F1
45#endif // DONT_USE_REGISTER_DEFINES
46
47class InterpreterMacroAssembler: public MacroAssembler {
48 protected:
49#ifndef CC_INTERP
50  // Interpreter specific version of call_VM_base
51    virtual void call_VM_leaf_base(
52    Register java_thread,
53    address  entry_point,
54    int      number_of_arguments
55  );
56
57  virtual void call_VM_base(
58    Register        oop_result,
59    Register        java_thread,
60    Register        last_java_sp,
61    address         entry_point,
62    int             number_of_arguments,
63    bool            check_exception=true
64  );
65
66  virtual void check_and_handle_popframe(Register java_thread);
67  virtual void check_and_handle_earlyret(Register java_thread);
68
69  // base routine for all dispatches
70  void dispatch_base(TosState state, address* table);
71#endif /* CC_INTERP */
72
73 public:
74  InterpreterMacroAssembler(CodeBuffer* c)
75    : MacroAssembler(c) {}
76
77#ifndef CC_INTERP
78  virtual void load_earlyret_value(TosState state);
79
80  static const Address l_tmp ;
81  static const Address d_tmp ;
82#endif /* CC_INTERP */
83
84  // helper routine for frame allocation/deallocation
85  // compute the delta by which the caller's SP has to
86  // be adjusted to accomodate for the non-argument
87  // locals
88  void compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta);
89
90#ifndef CC_INTERP
91
92  // dispatch routines
93  void dispatch_prolog(TosState state, int step = 0);
94  void dispatch_epilog(TosState state, int step = 0);
95  void dispatch_only(TosState state);
96  void dispatch_normal(TosState state);
97  void dispatch_next(TosState state, int step = 0);
98  void dispatch_next_noverify_oop(TosState state, int step = 0);
99  void dispatch_via (TosState state, address* table);
100
101
102  // Removes the current activation (incl. unlocking of monitors).
103  // Additionally this code is used for earlyReturn in which case we
104  // want to skip throwing an exception and installing an exception.
105  void remove_activation(TosState state,
106                         bool throw_monitor_exception = true,
107                         bool install_monitor_exception = true);
108
109 protected:
110  void dispatch_Lbyte_code(TosState state, address* table, int bcp_incr = 0, bool verify = true);
111#endif /* CC_INTERP */
112
113 public:
114  // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
115  void super_call_VM(Register thread_cache,
116                     Register oop_result,
117                     Register last_java_sp,
118                     address entry_point,
119                     Register arg_1,
120                     Register arg_2,
121                     bool check_exception = true);
122
123#ifndef CC_INTERP
124  void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2);
125
126  // Generate a subtype check: branch to ok_is_subtype if sub_klass is
127  // a subtype of super_klass.  Blows registers tmp1, tmp2 and tmp3.
128  void gen_subtype_check( Register sub_klass, Register super_klass, Register tmp1, Register tmp2, Register tmp3, Label &ok_is_subtype );
129
130  // helpers for tossing exceptions
131  void throw_if_not_1_icc( Condition ok_condition, Label& ok );
132  void throw_if_not_1_xcc( Condition ok_condition, Label& ok );
133  void throw_if_not_1_x  ( Condition ok_condition, Label& ok ); // chooses icc or xcc based on _LP64
134
135  void throw_if_not_2( address throw_entry_point, Register Rscratch, Label& ok);
136
137  void throw_if_not_icc( Condition ok_condition, address throw_entry_point, Register Rscratch );
138  void throw_if_not_xcc( Condition ok_condition, address throw_entry_point, Register Rscratch );
139  void throw_if_not_x  ( Condition ok_condition, address throw_entry_point, Register Rscratch );
140
141  // helpers for expression stack
142
143  void pop_i(     Register r = Otos_i);
144  void pop_ptr(   Register r = Otos_i, Register scratch = O4);
145  void pop_l(     Register r = Otos_l1);
146  // G4_scratch and Lscratch are used at call sites!!
147  void pop_f(FloatRegister f = Ftos_f,  Register scratch = G1_scratch);
148  void pop_d(FloatRegister f = Ftos_d1, Register scratch = G1_scratch);
149
150  void push_i(     Register r = Otos_i);
151  void push_ptr(   Register r = Otos_i);
152  void push_l(     Register r = Otos_l1);
153  void push_f(FloatRegister f = Ftos_f);
154  void push_d(FloatRegister f = Ftos_d1);
155
156
157  void pop (TosState state);           // transition vtos -> state
158  void push(TosState state);           // transition state -> vtos
159  void empty_expression_stack();       // resets both Lesp and SP
160
161#ifdef ASSERT
162  void verify_sp(Register Rsp, Register Rtemp);
163  void verify_esp(Register Resp);      // verify that Lesp points to a word in the temp stack
164#endif // ASSERT
165
166 public:
167  void if_cmp(Condition cc, bool ptr_compare);
168
169  // Load values from bytecode stream:
170
171  enum signedOrNot { Signed, Unsigned };
172  enum setCCOrNot  { set_CC,  dont_set_CC };
173
174  void get_2_byte_integer_at_bcp( int         bcp_offset,
175                                  Register    Rtmp,
176                                  Register    Rdst,
177                                  signedOrNot is_signed,
178                                  setCCOrNot  should_set_CC = dont_set_CC );
179
180  void get_4_byte_integer_at_bcp( int        bcp_offset,
181                                  Register   Rtmp,
182                                  Register   Rdst,
183                                  setCCOrNot should_set_CC = dont_set_CC );
184
185  void get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset, bool giant_index = false);
186  void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, bool giant_index = false);
187  void get_cache_index_at_bcp(Register cache, Register tmp, int bcp_offset, bool giant_index = false);
188
189
190  // common code
191
192  void field_offset_at(int n, Register tmp, Register dest, Register base);
193  int  field_offset_at(Register object, address bcp, int offset);
194  void fast_iaaccess(int n, address bcp);
195  void fast_iagetfield(address bcp);
196  void fast_iaputfield(address bcp, bool do_store_check );
197
198  void index_check(Register array, Register index, int index_shift, Register tmp, Register res);
199  void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res);
200
201  void get_constant_pool(Register Rdst);
202  void get_constant_pool_cache(Register Rdst);
203  void get_cpool_and_tags(Register Rcpool, Register Rtags);
204  void is_a(Label& L);
205
206  // Load compiled (i2c) or interpreter entry and call from interpreted
207  void call_from_interpreter(Register target, Register scratch, Register Rret);
208
209  // --------------------------------------------------
210
211  void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, bool install_monitor_exception = true);
212
213  void add_monitor_to_stack( bool stack_is_empty,
214                             Register Rtemp,
215                             Register Rtemp2 );
216
217  // Load/store aligned in _LP64 but unaligned otherwise
218  // These only apply to the Interpreter expression stack and locals!
219  void  load_unaligned_double(Register r1, int offset,  FloatRegister d);
220  void store_unaligned_double(FloatRegister d, Register r1, int offset );
221
222  // Load/store aligned in _LP64 but unaligned otherwise
223  void  load_unaligned_long(Register r1, int offset,  Register d);
224  void store_unaligned_long(Register d, Register r1, int offset );
225
226  void access_local_int( Register index, Register dst );
227  void access_local_ptr( Register index, Register dst );
228  void access_local_returnAddress( Register index, Register dst );
229  void access_local_long( Register index, Register dst );
230  void access_local_float( Register index, FloatRegister dst );
231  void access_local_double( Register index, FloatRegister dst );
232#ifdef ASSERT
233  void check_for_regarea_stomp( Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1);
234#endif // ASSERT
235  void store_local_int( Register index, Register src );
236  void store_local_ptr( Register index, Register src );
237  void store_local_ptr( int n, Register src );
238  void store_local_long( Register index, Register src );
239  void store_local_float( Register index, FloatRegister src );
240  void store_local_double( Register index, FloatRegister src );
241
242  // Helpers for swap and dup
243  void load_ptr(int n, Register val);
244  void store_ptr(int n, Register val);
245
246  // Helper for getting receiver in register.
247  void load_receiver(Register param_count, Register recv);
248
249  static int top_most_monitor_byte_offset(); // offset in bytes to top of monitor block
250  Address top_most_monitor();
251  void compute_stack_base( Register Rdest );
252
253#endif /* CC_INTERP */
254  void increment_invocation_counter( Register Rtmp, Register Rtmp2 );
255  void increment_backedge_counter( Register Rtmp, Register Rtmp2 );
256#ifndef CC_INTERP
257  void test_backedge_count_for_osr( Register backedge_count, Register branch_bcp, Register Rtmp );
258
259#endif /* CC_INTERP */
260  // Object locking
261  void lock_object  (Register lock_reg, Register obj_reg);
262  void unlock_object(Register lock_reg);
263
264#ifndef CC_INTERP
265  // Interpreter profiling operations
266  void set_method_data_pointer() { set_method_data_pointer_offset(noreg); }
267  void set_method_data_pointer_for_bcp();
268  void set_method_data_pointer_offset(Register mdi_reg);
269  void test_method_data_pointer(Label& zero_continue);
270  void verify_method_data_pointer();
271  void test_invocation_counter_for_mdp(Register invocation_count, Register cur_bcp, Register Rtmp, Label &profile_continue);
272
273  void set_mdp_data_at(int constant, Register value);
274  void increment_mdp_data_at(Address counter, Register bumped_count,
275                             bool decrement = false);
276  void increment_mdp_data_at(int constant, Register bumped_count,
277                             bool decrement = false);
278  void increment_mdp_data_at(Register reg, int constant,
279                             Register bumped_count, Register scratch2,
280                             bool decrement = false);
281  void set_mdp_flag_at(int flag_constant, Register scratch);
282  void test_mdp_data_at(int offset, Register value, Label& not_equal_continue,
283                        Register scratch);
284
285  void record_klass_in_profile(Register receiver, Register scratch, bool is_virtual_call);
286  void record_klass_in_profile_helper(Register receiver, Register scratch,
287                                      int start_row, Label& done, bool is_virtual_call);
288
289  void update_mdp_by_offset(int offset_of_disp, Register scratch);
290  void update_mdp_by_offset(Register reg, int offset_of_disp,
291                            Register scratch);
292  void update_mdp_by_constant(int constant);
293  void update_mdp_for_ret(TosState state, Register return_bci);
294
295  void profile_taken_branch(Register scratch, Register bumped_count);
296  void profile_not_taken_branch(Register scratch);
297  void profile_call(Register scratch);
298  void profile_final_call(Register scratch);
299  void profile_virtual_call(Register receiver, Register scratch, bool receiver_can_be_null = false);
300  void profile_ret(TosState state, Register return_bci, Register scratch);
301  void profile_null_seen(Register scratch);
302  void profile_typecheck(Register klass, Register scratch);
303  void profile_typecheck_failed(Register scratch);
304  void profile_switch_default(Register scratch);
305  void profile_switch_case(Register index,
306                           Register scratch1,
307                           Register scratch2,
308                           Register scratch3);
309
310  // Debugging
311  void interp_verify_oop(Register reg, TosState state, const char * file, int line);    // only if +VerifyOops && state == atos
312  void verify_oop_or_return_address(Register reg, Register rtmp); // for astore
313  void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU  && (state == ftos || state == dtos)
314
315#endif /* CC_INTERP */
316  // support for JVMTI/Dtrace
317  typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
318  void notify_method_entry();
319  void notify_method_exit(
320    bool save_result, TosState state, NotifyMethodExitMode mode);
321
322  void save_return_value(TosState state, bool is_native_call);
323  void restore_return_value(TosState state, bool is_native_call);
324};
325