Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(366)

Side by Side Diff: runtime/vm/code_patcher_x64.cc

Issue 9429055: Required rename on x64 platform. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 8 years, 10 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch | Annotate | Revision Log
« no previous file with comments | « no previous file | runtime/vm/instructions_x64.h » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64.
6 #if defined(TARGET_ARCH_X64) 6 #if defined(TARGET_ARCH_X64)
7 7
8 #include "vm/assembler.h" 8 #include "vm/assembler.h"
9 #include "vm/code_patcher.h" 9 #include "vm/code_patcher.h"
10 #include "vm/cpu.h" 10 #include "vm/cpu.h"
11 #include "vm/instructions.h" 11 #include "vm/instructions.h"
(...skipping 143 matching lines...) Expand 10 before | Expand all | Expand 10 after
155 *b = tmp; 155 *b = tmp;
156 a++; 156 a++;
157 b++; 157 b++;
158 } 158 }
159 } 159 }
160 160
161 161
162 // The patch code buffer contains the jump code sequence which will be inserted 162 // The patch code buffer contains the jump code sequence which will be inserted
163 // at entry point. 163 // at entry point.
164 void CodePatcher::PatchEntry(const Code& code) { 164 void CodePatcher::PatchEntry(const Code& code) {
165 Jump jmp_entry(code.EntryPoint()); 165 JumpPattern jmp_entry(code.EntryPoint());
166 ASSERT(!jmp_entry.IsValid()); 166 ASSERT(!jmp_entry.IsValid());
167 const uword patch_buffer = code.GetPatchCodePc(); 167 const uword patch_buffer = code.GetPatchCodePc();
168 ASSERT(patch_buffer != 0); 168 ASSERT(patch_buffer != 0);
169 Jump jmp_patch(patch_buffer); 169 JumpPattern jmp_patch(patch_buffer);
170 ASSERT(jmp_patch.IsValid()); 170 ASSERT(jmp_patch.IsValid());
171 const uword jump_target = jmp_patch.TargetAddress(); 171 const uword jump_target = jmp_patch.TargetAddress();
172 SwapCode(jmp_patch.pattern_length_in_bytes(), 172 SwapCode(jmp_patch.pattern_length_in_bytes(),
173 reinterpret_cast<char*>(code.EntryPoint()), 173 reinterpret_cast<char*>(code.EntryPoint()),
174 reinterpret_cast<char*>(patch_buffer)); 174 reinterpret_cast<char*>(patch_buffer));
175 jmp_entry.SetTargetAddress(jump_target); 175 jmp_entry.SetTargetAddress(jump_target);
176 } 176 }
177 177
178 178
179 // The entry point is a jump code sequence, the patch code buffer contains 179 // The entry point is a jump code sequence, the patch code buffer contains
180 // original code, the entry point contains the jump code sequence. 180 // original code, the entry point contains the jump code sequence.
181 void CodePatcher::RestoreEntry(const Code& code) { 181 void CodePatcher::RestoreEntry(const Code& code) {
182 Jump jmp_entry(code.EntryPoint()); 182 JumpPattern jmp_entry(code.EntryPoint());
183 ASSERT(jmp_entry.IsValid()); 183 ASSERT(jmp_entry.IsValid());
184 const uword jump_target = jmp_entry.TargetAddress(); 184 const uword jump_target = jmp_entry.TargetAddress();
185 const uword patch_buffer = code.GetPatchCodePc(); 185 const uword patch_buffer = code.GetPatchCodePc();
186 ASSERT(patch_buffer != 0); 186 ASSERT(patch_buffer != 0);
187 // 'patch_buffer' contains original entry code. 187 // 'patch_buffer' contains original entry code.
188 Jump jmp_patch(patch_buffer); 188 JumpPattern jmp_patch(patch_buffer);
189 ASSERT(!jmp_patch.IsValid()); 189 ASSERT(!jmp_patch.IsValid());
190 SwapCode(jmp_patch.pattern_length_in_bytes(), 190 SwapCode(jmp_patch.pattern_length_in_bytes(),
191 reinterpret_cast<char*>(code.EntryPoint()), 191 reinterpret_cast<char*>(code.EntryPoint()),
192 reinterpret_cast<char*>(patch_buffer)); 192 reinterpret_cast<char*>(patch_buffer));
193 ASSERT(jmp_patch.IsValid()); 193 ASSERT(jmp_patch.IsValid());
194 jmp_patch.SetTargetAddress(jump_target); 194 jmp_patch.SetTargetAddress(jump_target);
195 } 195 }
196 196
197 197
198 bool CodePatcher::CodeIsPatchable(const Code& code) { 198 bool CodePatcher::CodeIsPatchable(const Code& code) {
199 Jump jmp_entry(code.EntryPoint()); 199 JumpPattern jmp_entry(code.EntryPoint());
200 if (code.Size() < (jmp_entry.pattern_length_in_bytes() * 2)) { 200 if (code.Size() < (jmp_entry.pattern_length_in_bytes() * 2)) {
201 return false; 201 return false;
202 } 202 }
203 uword limit = code.EntryPoint() + jmp_entry.pattern_length_in_bytes(); 203 uword limit = code.EntryPoint() + jmp_entry.pattern_length_in_bytes();
204 for (intptr_t i = 0; i < code.pointer_offsets_length(); i++) { 204 for (intptr_t i = 0; i < code.pointer_offsets_length(); i++) {
205 const uword addr = code.GetPointerOffsetAt(i) + code.EntryPoint(); 205 const uword addr = code.GetPointerOffsetAt(i) + code.EntryPoint();
206 if (addr < limit) { 206 if (addr < limit) {
207 return false; 207 return false;
208 } 208 }
209 } 209 }
(...skipping 30 matching lines...) Expand all
240 } 240 }
241 241
242 242
243 intptr_t CodePatcher::InstanceCallSizeInBytes() { 243 intptr_t CodePatcher::InstanceCallSizeInBytes() {
244 return DartCallPattern::kCallPatternSize; 244 return DartCallPattern::kCallPatternSize;
245 } 245 }
246 246
247 } // namespace dart 247 } // namespace dart
248 248
249 #endif // defined TARGET_ARCH_X64 249 #endif // defined TARGET_ARCH_X64
OLDNEW
« no previous file with comments | « no previous file | runtime/vm/instructions_x64.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698