interp_masm_sparc.hpp revision 0:a61af66fc99e 
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
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);
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_ptr(   Register r, Register tag);
153  void push_l(     Register r = Otos_l1);
154  void push_f(FloatRegister f = Ftos_f);
155  void push_d(FloatRegister f = Ftos_d1);
156
157
158  void pop (TosState state);           // transition vtos -> state
159  void push(TosState state);           // transition state -> vtos
160  void empty_expression_stack();       // resets both Lesp and SP
161
162  // Support for Tagged Stacks
163  void tag_stack(frame::Tag t, Register r);
164  void tag_stack(Register tag);
165  void tag_local(frame::Tag t, Register src, Register base, int n = 0);
166
167#ifdef ASSERT
168  void verify_sp(Register Rsp, Register Rtemp);
169  void verify_esp(Register Resp);      // verify that Lesp points to a word in the temp stack
170
171  void verify_stack_tag(frame::Tag t, Register r, Register scratch = G0);
172  void verify_local_tag(frame::Tag t, Register base, Register scr, int n = 0);
173#endif // ASSERT
174
175 public:
176  void if_cmp(Condition cc, bool ptr_compare);
177
178  // Load values from bytecode stream:
179
180  enum signedOrNot { Signed, Unsigned };
181  enum setCCOrNot  { set_CC,  dont_set_CC };
182
183  void get_2_byte_integer_at_bcp( int         bcp_offset,
184                                  Register    Rtmp,
185                                  Register    Rdst,
186                                  signedOrNot is_signed,
187                                  setCCOrNot  should_set_CC = dont_set_CC );
188
189  void get_4_byte_integer_at_bcp( int        bcp_offset,
190                                  Register   Rtmp,
191                                  Register   Rdst,
192                                  setCCOrNot should_set_CC = dont_set_CC );
193
194  void get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset);
195  void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset);
196
197
198  // common code
199
200  void field_offset_at(int n, Register tmp, Register dest, Register base);
201  int  field_offset_at(Register object, address bcp, int offset);
202  void fast_iaaccess(int n, address bcp);
203  void fast_iagetfield(address bcp);
204  void fast_iaputfield(address bcp, bool do_store_check );
205
206  void index_check(Register array, Register index, int index_shift, Register tmp, Register res);
207  void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res);
208
209  void get_constant_pool(Register Rdst);
210  void get_constant_pool_cache(Register Rdst);
211  void get_cpool_and_tags(Register Rcpool, Register Rtags);
212  void is_a(Label& L);
213
214  // Load compiled (i2c) or interpreter entry and call from interpreted
215  void call_from_interpreter(Register target, Register scratch, Register Rret);
216
217  // --------------------------------------------------
218
219  void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, bool install_monitor_exception = true);
220
221  void add_monitor_to_stack( bool stack_is_empty,
222                             Register Rtemp,
223                             Register Rtemp2 );
224
225  // Load/store aligned in _LP64 but unaligned otherwise
226  // These only apply to the Interpreter expression stack and locals!
227  void  load_unaligned_double(Register r1, int offset,  FloatRegister d);
228  void store_unaligned_double(FloatRegister d, Register r1, int offset );
229
230  // Load/store aligned in _LP64 but unaligned otherwise
231  void  load_unaligned_long(Register r1, int offset,  Register d);
232  void store_unaligned_long(Register d, Register r1, int offset );
233
234  void access_local_int( Register index, Register dst );
235  void access_local_ptr( Register index, Register dst );
236  void access_local_returnAddress( Register index, Register dst );
237  void access_local_long( Register index, Register dst );
238  void access_local_float( Register index, FloatRegister dst );
239  void access_local_double( Register index, FloatRegister dst );
240#ifdef ASSERT
241  void check_for_regarea_stomp( Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1);
242#endif // ASSERT
243  void store_local_int( Register index, Register src );
244  void store_local_ptr( Register index, Register src, Register tag = Otos_l2 );
245  void store_local_ptr( int n, Register src, Register tag = Otos_l2 );
246  void store_local_long( Register index, Register src );
247  void store_local_float( Register index, FloatRegister src );
248  void store_local_double( Register index, FloatRegister src );
249
250  // Tagged stack helpers for swap and dup
251  void load_ptr_and_tag(int n, Register val, Register tag);
252  void store_ptr_and_tag(int n, Register val, Register tag);
253
254  // Tagged stack helper for getting receiver in register.
255  void load_receiver(Register param_count, Register recv);
256
257  static int top_most_monitor_byte_offset(); // offset in bytes to top of monitor block
258  Address top_most_monitor();
259  void compute_stack_base( Register Rdest );
260
261#endif /* CC_INTERP */
262  void increment_invocation_counter( Register Rtmp, Register Rtmp2 );
263  void increment_backedge_counter( Register Rtmp, Register Rtmp2 );
264#ifndef CC_INTERP
265  void test_backedge_count_for_osr( Register backedge_count, Register branch_bcp, Register Rtmp );
266
267#endif /* CC_INTERP */
268  // Object locking
269  void lock_object  (Register lock_reg, Register obj_reg);
270  void unlock_object(Register lock_reg);
271
272#ifndef CC_INTERP
273  // Interpreter profiling operations
274  void set_method_data_pointer() { set_method_data_pointer_offset(noreg); }
275  void set_method_data_pointer_for_bcp();
276  void set_method_data_pointer_offset(Register mdi_reg);
277  void test_method_data_pointer(Label& zero_continue);
278  void verify_method_data_pointer();
279  void test_invocation_counter_for_mdp(Register invocation_count, Register cur_bcp, Register Rtmp, Label &profile_continue);
280
281  void set_mdp_data_at(int constant, Register value);
282  void increment_mdp_data_at(Address counter, Register bumped_count,
283                             bool decrement = false);
284  void increment_mdp_data_at(int constant, Register bumped_count,
285                             bool decrement = false);
286  void increment_mdp_data_at(Register reg, int constant,
287                             Register bumped_count, Register scratch2,
288                             bool decrement = false);
289  void set_mdp_flag_at(int flag_constant, Register scratch);
290  void test_mdp_data_at(int offset, Register value, Label& not_equal_continue,
291                        Register scratch);
292
293  void record_klass_in_profile(Register receiver, Register scratch);
294  void record_klass_in_profile_helper(Register receiver, Register scratch,
295                                      int start_row, Label& done);
296
297  void update_mdp_by_offset(int offset_of_disp, Register scratch);
298  void update_mdp_by_offset(Register reg, int offset_of_disp,
299                            Register scratch);
300  void update_mdp_by_constant(int constant);
301  void update_mdp_for_ret(TosState state, Register return_bci);
302
303  void profile_taken_branch(Register scratch, Register bumped_count);
304  void profile_not_taken_branch(Register scratch);
305  void profile_call(Register scratch);
306  void profile_final_call(Register scratch);
307  void profile_virtual_call(Register receiver, Register scratch);
308  void profile_ret(TosState state, Register return_bci, Register scratch);
309  void profile_null_seen(Register scratch);
310  void profile_typecheck(Register klass, Register scratch);
311  void profile_typecheck_failed(Register scratch);
312  void profile_switch_default(Register scratch);
313  void profile_switch_case(Register index,
314                           Register scratch1,
315                           Register scratch2,
316                           Register scratch3);
317
318  // Debugging
319  void interp_verify_oop(Register reg, TosState state, const char * file, int line);    // only if +VerifyOops && state == atos
320  void verify_oop_or_return_address(Register reg, Register rtmp); // for astore
321  void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU  && (state == ftos || state == dtos)
322
323#endif /* CC_INTERP */
324  // support for JVMTI/Dtrace
325  typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
326  void notify_method_entry();
327  void notify_method_exit(
328    bool save_result, TosState state, NotifyMethodExitMode mode);
329
330  void save_return_value(TosState state, bool is_native_call);
331  void restore_return_value(TosState state, bool is_native_call);
332};
333