Thu, 08 Sep 2011 10:12:25 +0200
7087445: Improve platform independence of JSR292 shared code
Summary: changes necessary for some JSR292 ports
Reviewed-by: jrose, dholmes
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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).
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25 #ifndef CPU_X86_VM_FRAME_X86_INLINE_HPP
26 #define CPU_X86_VM_FRAME_X86_INLINE_HPP
28 // Inline functions for Intel frames:
30 // Constructors:
32 inline frame::frame() {
33 _pc = NULL;
34 _sp = NULL;
35 _unextended_sp = NULL;
36 _fp = NULL;
37 _cb = NULL;
38 _deopt_state = unknown;
39 }
41 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
42 _sp = sp;
43 _unextended_sp = sp;
44 _fp = fp;
45 _pc = pc;
46 assert(pc != NULL, "no pc?");
47 _cb = CodeCache::find_blob(pc);
48 adjust_unextended_sp();
50 address original_pc = nmethod::get_deopt_original_pc(this);
51 if (original_pc != NULL) {
52 _pc = original_pc;
53 _deopt_state = is_deoptimized;
54 } else {
55 _deopt_state = not_deoptimized;
56 }
57 }
59 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
60 _sp = sp;
61 _unextended_sp = unextended_sp;
62 _fp = fp;
63 _pc = pc;
64 assert(pc != NULL, "no pc?");
65 _cb = CodeCache::find_blob(pc);
66 adjust_unextended_sp();
68 address original_pc = nmethod::get_deopt_original_pc(this);
69 if (original_pc != NULL) {
70 _pc = original_pc;
71 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod");
72 _deopt_state = is_deoptimized;
73 } else {
74 _deopt_state = not_deoptimized;
75 }
76 }
78 inline frame::frame(intptr_t* sp, intptr_t* fp) {
79 _sp = sp;
80 _unextended_sp = sp;
81 _fp = fp;
82 _pc = (address)(sp[-1]);
84 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
85 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
86 // unlucky the junk value could be to a zombied method and we'll die on the
87 // find_blob call. This is also why we can have no asserts on the validity
88 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
89 // -> pd_last_frame should use a specialized version of pd_last_frame which could
90 // call a specilaized frame constructor instead of this one.
91 // Then we could use the assert below. However this assert is of somewhat dubious
92 // value.
93 // assert(_pc != NULL, "no pc?");
95 _cb = CodeCache::find_blob(_pc);
96 adjust_unextended_sp();
98 address original_pc = nmethod::get_deopt_original_pc(this);
99 if (original_pc != NULL) {
100 _pc = original_pc;
101 _deopt_state = is_deoptimized;
102 } else {
103 _deopt_state = not_deoptimized;
104 }
105 }
107 // Accessors
109 inline bool frame::equal(frame other) const {
110 bool ret = sp() == other.sp()
111 && unextended_sp() == other.unextended_sp()
112 && fp() == other.fp()
113 && pc() == other.pc();
114 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
115 return ret;
116 }
118 // Return unique id for this frame. The id must have a value where we can distinguish
119 // identity and younger/older relationship. NULL represents an invalid (incomparable)
120 // frame.
121 inline intptr_t* frame::id(void) const { return unextended_sp(); }
123 // Relationals on frames based
124 // Return true if the frame is younger (more recent activation) than the frame represented by id
125 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
126 return this->id() < id ; }
128 // Return true if the frame is older (less recent activation) than the frame represented by id
129 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
130 return this->id() > id ; }
134 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
135 inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; }
138 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
140 // Return address:
142 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
143 inline address frame::sender_pc() const { return *sender_pc_addr(); }
145 // return address of param, zero origin index.
146 inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); }
148 #ifdef CC_INTERP
150 inline interpreterState frame::get_interpreterState() const {
151 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
152 }
154 inline intptr_t* frame::sender_sp() const {
155 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
156 if (is_interpreted_frame()) {
157 assert(false, "should never happen");
158 return get_interpreterState()->sender_sp();
159 } else {
160 return addr_at(sender_sp_offset);
161 }
162 }
164 inline intptr_t** frame::interpreter_frame_locals_addr() const {
165 assert(is_interpreted_frame(), "must be interpreted");
166 return &(get_interpreterState()->_locals);
167 }
169 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
170 assert(is_interpreted_frame(), "must be interpreted");
171 return (intptr_t*) &(get_interpreterState()->_bcp);
172 }
175 // Constant pool cache
177 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
178 assert(is_interpreted_frame(), "must be interpreted");
179 return &(get_interpreterState()->_constants);
180 }
182 // Method
184 inline methodOop* frame::interpreter_frame_method_addr() const {
185 assert(is_interpreted_frame(), "must be interpreted");
186 return &(get_interpreterState()->_method);
187 }
189 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
190 assert(is_interpreted_frame(), "must be interpreted");
191 return (intptr_t*) &(get_interpreterState()->_mdx);
192 }
194 // top of expression stack
195 inline intptr_t* frame::interpreter_frame_tos_address() const {
196 assert(is_interpreted_frame(), "wrong frame type");
197 return get_interpreterState()->_stack + 1;
198 }
200 #else /* asm interpreter */
201 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
203 inline intptr_t** frame::interpreter_frame_locals_addr() const {
204 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
205 }
207 inline intptr_t* frame::interpreter_frame_last_sp() const {
208 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
209 }
211 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
212 return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
213 }
216 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
217 return (intptr_t*)addr_at(interpreter_frame_mdx_offset);
218 }
222 // Constant pool cache
224 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
225 return (constantPoolCacheOop*)addr_at(interpreter_frame_cache_offset);
226 }
228 // Method
230 inline methodOop* frame::interpreter_frame_method_addr() const {
231 return (methodOop*)addr_at(interpreter_frame_method_offset);
232 }
234 // top of expression stack
235 inline intptr_t* frame::interpreter_frame_tos_address() const {
236 intptr_t* last_sp = interpreter_frame_last_sp();
237 if (last_sp == NULL) {
238 return sp();
239 } else {
240 // sp() may have been extended or shrunk by an adapter. At least
241 // check that we don't fall behind the legal region.
242 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
243 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
244 return last_sp;
245 }
246 }
248 #endif /* CC_INTERP */
250 inline int frame::pd_oop_map_offset_adjustment() const {
251 return 0;
252 }
254 inline int frame::interpreter_frame_monitor_size() {
255 return BasicObjectLock::size();
256 }
259 // expression stack
260 // (the max_stack arguments are used by the GC; see class FrameClosure)
262 inline intptr_t* frame::interpreter_frame_expression_stack() const {
263 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
264 return monitor_end-1;
265 }
268 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
271 // Entry frames
273 inline JavaCallWrapper* frame::entry_frame_call_wrapper() const {
274 return (JavaCallWrapper*)at(entry_frame_call_wrapper_offset);
275 }
278 // Compiled frames
280 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
281 return (nof_args - local_index + (local_index < nof_args ? 1: -1));
282 }
284 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
285 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
286 }
288 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
289 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
290 }
292 inline bool frame::volatile_across_calls(Register reg) {
293 return true;
294 }
298 inline oop frame::saved_oop_result(RegisterMap* map) const {
299 return *((oop*) map->location(rax->as_VMReg()));
300 }
302 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
303 *((oop*) map->location(rax->as_VMReg())) = obj;
304 }
306 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP