Mercurial > hg > graal-jvmci-8
comparison src/share/vm/code/codeBlob.cpp @ 1579:e9ff18c4ace7
Merge
author | jrose |
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date | Wed, 02 Jun 2010 22:45:42 -0700 |
parents | c18cbe5936b8 1a5913bf5e19 |
children | 2a47bd84841f |
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1562:dfe27f03244a | 1579:e9ff18c4ace7 |
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64 _frame_complete_offset = frame_complete; | 64 _frame_complete_offset = frame_complete; |
65 _header_size = header_size; | 65 _header_size = header_size; |
66 _relocation_size = locs_size; | 66 _relocation_size = locs_size; |
67 _instructions_offset = align_code_offset(header_size + locs_size); | 67 _instructions_offset = align_code_offset(header_size + locs_size); |
68 _data_offset = size; | 68 _data_offset = size; |
69 _oops_offset = size; | |
70 _oops_length = 0; | |
71 _frame_size = 0; | 69 _frame_size = 0; |
72 set_oop_maps(NULL); | 70 set_oop_maps(NULL); |
73 } | 71 } |
74 | 72 |
75 | 73 |
92 _frame_complete_offset = frame_complete; | 90 _frame_complete_offset = frame_complete; |
93 _header_size = header_size; | 91 _header_size = header_size; |
94 _relocation_size = round_to(cb->total_relocation_size(), oopSize); | 92 _relocation_size = round_to(cb->total_relocation_size(), oopSize); |
95 _instructions_offset = align_code_offset(header_size + _relocation_size); | 93 _instructions_offset = align_code_offset(header_size + _relocation_size); |
96 _data_offset = _instructions_offset + round_to(cb->total_code_size(), oopSize); | 94 _data_offset = _instructions_offset + round_to(cb->total_code_size(), oopSize); |
97 _oops_offset = _size - round_to(cb->total_oop_size(), oopSize); | |
98 _oops_length = 0; // temporary, until the copy_oops handshake | |
99 assert(_oops_offset >= _data_offset, "codeBlob is too small"); | |
100 assert(_data_offset <= size, "codeBlob is too small"); | 95 assert(_data_offset <= size, "codeBlob is too small"); |
101 | 96 |
102 cb->copy_code_and_locs_to(this); | 97 cb->copy_code_and_locs_to(this); |
103 set_oop_maps(oop_maps); | 98 set_oop_maps(oop_maps); |
104 _frame_size = frame_size; | 99 _frame_size = frame_size; |
128 _oop_maps = NULL; | 123 _oop_maps = NULL; |
129 } | 124 } |
130 _comments.free(); | 125 _comments.free(); |
131 } | 126 } |
132 | 127 |
133 | |
134 // Promote one word from an assembly-time handle to a live embedded oop. | |
135 inline void CodeBlob::initialize_immediate_oop(oop* dest, jobject handle) { | |
136 if (handle == NULL || | |
137 // As a special case, IC oops are initialized to 1 or -1. | |
138 handle == (jobject) Universe::non_oop_word()) { | |
139 (*dest) = (oop)handle; | |
140 } else { | |
141 (*dest) = JNIHandles::resolve_non_null(handle); | |
142 } | |
143 } | |
144 | |
145 | |
146 void CodeBlob::copy_oops(GrowableArray<jobject>* array) { | |
147 assert(_oops_length == 0, "do this handshake just once, please"); | |
148 int length = array->length(); | |
149 assert((address)(oops_begin() + length) <= data_end(), "oops big enough"); | |
150 oop* dest = oops_begin(); | |
151 for (int index = 0 ; index < length; index++) { | |
152 initialize_immediate_oop(&dest[index], array->at(index)); | |
153 } | |
154 _oops_length = length; | |
155 | |
156 // Now we can fix up all the oops in the code. | |
157 // We need to do this in the code because | |
158 // the assembler uses jobjects as placeholders. | |
159 // The code and relocations have already been | |
160 // initialized by the CodeBlob constructor, | |
161 // so it is valid even at this early point to | |
162 // iterate over relocations and patch the code. | |
163 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); | |
164 } | |
165 | |
166 | |
167 relocInfo::relocType CodeBlob::reloc_type_for_address(address pc) { | |
168 RelocIterator iter(this, pc, pc+1); | |
169 while (iter.next()) { | |
170 return (relocInfo::relocType) iter.type(); | |
171 } | |
172 // No relocation info found for pc | |
173 ShouldNotReachHere(); | |
174 return relocInfo::none; // dummy return value | |
175 } | |
176 | |
177 | |
178 bool CodeBlob::is_at_poll_return(address pc) { | |
179 RelocIterator iter(this, pc, pc+1); | |
180 while (iter.next()) { | |
181 if (iter.type() == relocInfo::poll_return_type) | |
182 return true; | |
183 } | |
184 return false; | |
185 } | |
186 | |
187 | |
188 bool CodeBlob::is_at_poll_or_poll_return(address pc) { | |
189 RelocIterator iter(this, pc, pc+1); | |
190 while (iter.next()) { | |
191 relocInfo::relocType t = iter.type(); | |
192 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) | |
193 return true; | |
194 } | |
195 return false; | |
196 } | |
197 | |
198 | |
199 void CodeBlob::fix_oop_relocations(address begin, address end, | |
200 bool initialize_immediates) { | |
201 // re-patch all oop-bearing instructions, just in case some oops moved | |
202 RelocIterator iter(this, begin, end); | |
203 while (iter.next()) { | |
204 if (iter.type() == relocInfo::oop_type) { | |
205 oop_Relocation* reloc = iter.oop_reloc(); | |
206 if (initialize_immediates && reloc->oop_is_immediate()) { | |
207 oop* dest = reloc->oop_addr(); | |
208 initialize_immediate_oop(dest, (jobject) *dest); | |
209 } | |
210 // Refresh the oop-related bits of this instruction. | |
211 reloc->fix_oop_relocation(); | |
212 } | |
213 | |
214 // There must not be any interfering patches or breakpoints. | |
215 assert(!(iter.type() == relocInfo::breakpoint_type | |
216 && iter.breakpoint_reloc()->active()), | |
217 "no active breakpoint"); | |
218 } | |
219 } | |
220 | |
221 void CodeBlob::do_unloading(BoolObjectClosure* is_alive, | |
222 OopClosure* keep_alive, | |
223 bool unloading_occurred) { | |
224 ShouldNotReachHere(); | |
225 } | |
226 | 128 |
227 OopMap* CodeBlob::oop_map_for_return_address(address return_address) { | 129 OopMap* CodeBlob::oop_map_for_return_address(address return_address) { |
228 address pc = return_address ; | 130 address pc = return_address ; |
229 assert (oop_maps() != NULL, "nope"); | 131 assert (oop_maps() != NULL, "nope"); |
230 return oop_maps()->find_map_at_offset ((intptr_t) pc - (intptr_t) instructions_begin()); | 132 return oop_maps()->find_map_at_offset ((intptr_t) pc - (intptr_t) instructions_begin()); |