frame_x86.inline.hpp revision 5776:de6a9e811145 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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24
25#ifndef CPU_X86_VM_FRAME_X86_INLINE_HPP
26#define CPU_X86_VM_FRAME_X86_INLINE_HPP
27
28#include "code/codeCache.hpp"
29
30// Inline functions for Intel frames:
31
32// Constructors:
33
34inline frame::frame() {
35  _pc = NULL;
36  _sp = NULL;
37  _unextended_sp = NULL;
38  _fp = NULL;
39  _cb = NULL;
40  _deopt_state = unknown;
41}
42
43inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
44  _sp = sp;
45  _unextended_sp = sp;
46  _fp = fp;
47  _pc = pc;
48  assert(pc != NULL, "no pc?");
49  _cb = CodeCache::find_blob(pc);
50  adjust_unextended_sp();
51
52  address original_pc = nmethod::get_deopt_original_pc(this);
53  if (original_pc != NULL) {
54    _pc = original_pc;
55    _deopt_state = is_deoptimized;
56  } else {
57    _deopt_state = not_deoptimized;
58  }
59}
60
61inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
62  _sp = sp;
63  _unextended_sp = unextended_sp;
64  _fp = fp;
65  _pc = pc;
66  assert(pc != NULL, "no pc?");
67  _cb = CodeCache::find_blob(pc);
68  adjust_unextended_sp();
69
70  address original_pc = nmethod::get_deopt_original_pc(this);
71  if (original_pc != NULL) {
72    _pc = original_pc;
73    assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod");
74    _deopt_state = is_deoptimized;
75  } else {
76    _deopt_state = not_deoptimized;
77  }
78}
79
80inline frame::frame(intptr_t* sp, intptr_t* fp) {
81  _sp = sp;
82  _unextended_sp = sp;
83  _fp = fp;
84  _pc = (address)(sp[-1]);
85
86  // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
87  // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
88  // unlucky the junk value could be to a zombied method and we'll die on the
89  // find_blob call. This is also why we can have no asserts on the validity
90  // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
91  // -> pd_last_frame should use a specialized version of pd_last_frame which could
92  // call a specilaized frame constructor instead of this one.
93  // Then we could use the assert below. However this assert is of somewhat dubious
94  // value.
95  // assert(_pc != NULL, "no pc?");
96
97  _cb = CodeCache::find_blob(_pc);
98  adjust_unextended_sp();
99
100  address original_pc = nmethod::get_deopt_original_pc(this);
101  if (original_pc != NULL) {
102    _pc = original_pc;
103    _deopt_state = is_deoptimized;
104  } else {
105    _deopt_state = not_deoptimized;
106  }
107}
108
109// Accessors
110
111inline bool frame::equal(frame other) const {
112  bool ret =  sp() == other.sp()
113              && unextended_sp() == other.unextended_sp()
114              && fp() == other.fp()
115              && pc() == other.pc();
116  assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
117  return ret;
118}
119
120// Return unique id for this frame. The id must have a value where we can distinguish
121// identity and younger/older relationship. NULL represents an invalid (incomparable)
122// frame.
123inline intptr_t* frame::id(void) const { return unextended_sp(); }
124
125// Relationals on frames based
126// Return true if the frame is younger (more recent activation) than the frame represented by id
127inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
128                                                    return this->id() < id ; }
129
130// Return true if the frame is older (less recent activation) than the frame represented by id
131inline bool frame::is_older(intptr_t* id) const   { assert(this->id() != NULL && id != NULL, "NULL frame id");
132                                                    return this->id() > id ; }
133
134
135
136inline intptr_t* frame::link() const              { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
137inline void      frame::set_link(intptr_t* addr)  { *(intptr_t **)addr_at(link_offset) = addr; }
138
139
140inline intptr_t* frame::unextended_sp() const     { return _unextended_sp; }
141
142// Return address:
143
144inline address* frame::sender_pc_addr()      const { return (address*) addr_at( return_addr_offset); }
145inline address  frame::sender_pc()           const { return *sender_pc_addr(); }
146
147// return address of param, zero origin index.
148inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); }
149
150#ifdef CC_INTERP
151
152inline interpreterState frame::get_interpreterState() const {
153  return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
154}
155
156inline intptr_t*    frame::sender_sp()        const {
157  // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
158  if (is_interpreted_frame()) {
159    assert(false, "should never happen");
160    return get_interpreterState()->sender_sp();
161  } else {
162    return            addr_at(sender_sp_offset);
163  }
164}
165
166inline intptr_t** frame::interpreter_frame_locals_addr() const {
167  assert(is_interpreted_frame(), "must be interpreted");
168  return &(get_interpreterState()->_locals);
169}
170
171inline intptr_t* frame::interpreter_frame_bcx_addr() const {
172  assert(is_interpreted_frame(), "must be interpreted");
173  return (intptr_t*) &(get_interpreterState()->_bcp);
174}
175
176
177// Constant pool cache
178
179inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
180  assert(is_interpreted_frame(), "must be interpreted");
181  return &(get_interpreterState()->_constants);
182}
183
184// Method
185
186inline Method** frame::interpreter_frame_method_addr() const {
187  assert(is_interpreted_frame(), "must be interpreted");
188  return &(get_interpreterState()->_method);
189}
190
191inline intptr_t* frame::interpreter_frame_mdx_addr() const {
192  assert(is_interpreted_frame(), "must be interpreted");
193  return (intptr_t*) &(get_interpreterState()->_mdx);
194}
195
196// top of expression stack
197inline intptr_t* frame::interpreter_frame_tos_address() const {
198  assert(is_interpreted_frame(), "wrong frame type");
199  return get_interpreterState()->_stack + 1;
200}
201
202#else /* asm interpreter */
203inline intptr_t*    frame::sender_sp()        const { return            addr_at(   sender_sp_offset); }
204
205inline intptr_t** frame::interpreter_frame_locals_addr() const {
206  return (intptr_t**)addr_at(interpreter_frame_locals_offset);
207}
208
209inline intptr_t* frame::interpreter_frame_last_sp() const {
210  return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
211}
212
213inline intptr_t* frame::interpreter_frame_bcx_addr() const {
214  return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
215}
216
217
218inline intptr_t* frame::interpreter_frame_mdx_addr() const {
219  return (intptr_t*)addr_at(interpreter_frame_mdx_offset);
220}
221
222
223
224// Constant pool cache
225
226inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
227  return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
228}
229
230// Method
231
232inline Method** frame::interpreter_frame_method_addr() const {
233  return (Method**)addr_at(interpreter_frame_method_offset);
234}
235
236// top of expression stack
237inline intptr_t* frame::interpreter_frame_tos_address() const {
238  intptr_t* last_sp = interpreter_frame_last_sp();
239  if (last_sp == NULL) {
240    return sp();
241  } else {
242    // sp() may have been extended or shrunk by an adapter.  At least
243    // check that we don't fall behind the legal region.
244    // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
245    assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
246    return last_sp;
247  }
248}
249
250#endif /* CC_INTERP */
251
252inline int frame::pd_oop_map_offset_adjustment() const {
253  return 0;
254}
255
256inline int frame::interpreter_frame_monitor_size() {
257  return BasicObjectLock::size();
258}
259
260
261// expression stack
262// (the max_stack arguments are used by the GC; see class FrameClosure)
263
264inline intptr_t* frame::interpreter_frame_expression_stack() const {
265  intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
266  return monitor_end-1;
267}
268
269
270inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
271
272
273// Entry frames
274
275inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
276 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
277}
278
279// Compiled frames
280
281inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
282  return (nof_args - local_index + (local_index < nof_args ? 1: -1));
283}
284
285inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
286  return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
287}
288
289inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
290  return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
291}
292
293inline bool frame::volatile_across_calls(Register reg) {
294  return true;
295}
296
297inline oop frame::saved_oop_result(RegisterMap* map) const {
298  oop* result_adr = (oop *)map->location(rax->as_VMReg());
299  guarantee(result_adr != NULL, "bad register save location");
300
301  return (*result_adr);
302}
303
304inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
305  oop* result_adr = (oop *)map->location(rax->as_VMReg());
306  guarantee(result_adr != NULL, "bad register save location");
307
308  *result_adr = obj;
309}
310
311#endif // CPU_X86_VM_FRAME_X86_INLINE_HPP
312