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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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_ARM. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. |
6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
7 | 7 |
8 #include "vm/intermediate_language.h" | 8 #include "vm/intermediate_language.h" |
9 | 9 |
10 #include "vm/compiler.h" | 10 #include "vm/compiler.h" |
11 #include "vm/cpu.h" | 11 #include "vm/cpu.h" |
12 #include "vm/dart_entry.h" | 12 #include "vm/dart_entry.h" |
13 #include "vm/flow_graph.h" | 13 #include "vm/flow_graph.h" |
14 #include "vm/flow_graph_compiler.h" | 14 #include "vm/flow_graph_compiler.h" |
15 #include "vm/flow_graph_range_analysis.h" | 15 #include "vm/flow_graph_range_analysis.h" |
| 16 #include "vm/instructions.h" |
16 #include "vm/locations.h" | 17 #include "vm/locations.h" |
17 #include "vm/object_store.h" | 18 #include "vm/object_store.h" |
18 #include "vm/parser.h" | 19 #include "vm/parser.h" |
19 #include "vm/simulator.h" | 20 #include "vm/simulator.h" |
20 #include "vm/stack_frame.h" | 21 #include "vm/stack_frame.h" |
21 #include "vm/stub_code.h" | 22 #include "vm/stub_code.h" |
22 #include "vm/symbols.h" | 23 #include "vm/symbols.h" |
23 | 24 |
24 #define __ compiler->assembler()-> | 25 #define __ compiler->assembler()-> |
25 #define Z (compiler->zone()) | 26 #define Z (compiler->zone()) |
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225 | 226 |
226 // R2: instructions entry point. | 227 // R2: instructions entry point. |
227 // R9: Smi 0 (no IC data; the lazy-compile stub expects a GC-safe value). | 228 // R9: Smi 0 (no IC data; the lazy-compile stub expects a GC-safe value). |
228 __ LoadImmediate(R9, 0); | 229 __ LoadImmediate(R9, 0); |
229 __ blx(R2); | 230 __ blx(R2); |
230 compiler->RecordSafepoint(locs()); | 231 compiler->RecordSafepoint(locs()); |
231 // Marks either the continuation point in unoptimized code or the | 232 // Marks either the continuation point in unoptimized code or the |
232 // deoptimization point in optimized code, after call. | 233 // deoptimization point in optimized code, after call. |
233 const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id()); | 234 const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id()); |
234 if (compiler->is_optimizing()) { | 235 if (compiler->is_optimizing()) { |
235 compiler->AddDeoptIndexAtCall(deopt_id_after, token_pos()); | 236 compiler->AddDeoptIndexAtCall(deopt_id_after); |
236 } | 237 } |
237 // Add deoptimization continuation point after the call and before the | 238 // Add deoptimization continuation point after the call and before the |
238 // arguments are removed. | 239 // arguments are removed. |
239 // In optimized code this descriptor is needed for exception handling. | 240 // In optimized code this descriptor is needed for exception handling. |
240 compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt, | 241 compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt, |
241 deopt_id_after, | 242 deopt_id_after, |
242 token_pos()); | 243 token_pos()); |
243 __ Drop(argument_count); | 244 __ Drop(argument_count); |
244 } | 245 } |
245 | 246 |
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2829 | 2830 |
2830 | 2831 |
2831 LocationSummary* CatchBlockEntryInstr::MakeLocationSummary(Zone* zone, | 2832 LocationSummary* CatchBlockEntryInstr::MakeLocationSummary(Zone* zone, |
2832 bool opt) const { | 2833 bool opt) const { |
2833 UNREACHABLE(); | 2834 UNREACHABLE(); |
2834 return NULL; | 2835 return NULL; |
2835 } | 2836 } |
2836 | 2837 |
2837 | 2838 |
2838 void CatchBlockEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { | 2839 void CatchBlockEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) { |
| 2840 // Ensure space for patching return sites for lazy deopt. |
| 2841 if (!FLAG_precompiled_mode && compiler->is_optimizing()) { |
| 2842 for (intptr_t i = 0; |
| 2843 i < CallPattern::DeoptCallPatternLengthInInstructions(); |
| 2844 ++i) { |
| 2845 __ nop(); |
| 2846 } |
| 2847 } |
2839 __ Bind(compiler->GetJumpLabel(this)); | 2848 __ Bind(compiler->GetJumpLabel(this)); |
2840 compiler->AddExceptionHandler(catch_try_index(), | 2849 compiler->AddExceptionHandler(catch_try_index(), |
2841 try_index(), | 2850 try_index(), |
2842 compiler->assembler()->CodeSize(), | 2851 compiler->assembler()->CodeSize(), |
2843 catch_handler_types_, | 2852 catch_handler_types_, |
2844 needs_stacktrace()); | 2853 needs_stacktrace()); |
2845 // Restore the pool pointer. | 2854 // On lazy deoptimization we patch the optimized code here to enter the |
2846 __ RestoreCodePointer(); | 2855 // deoptimization stub. |
2847 __ LoadPoolPointer(); | 2856 const intptr_t deopt_id = Thread::ToDeoptAfter(GetDeoptId()); |
2848 | 2857 if (compiler->is_optimizing()) { |
| 2858 compiler->AddDeoptIndexAtCall(deopt_id); |
| 2859 } else { |
| 2860 compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt, |
| 2861 deopt_id, |
| 2862 TokenPosition::kNoSource); |
| 2863 } |
2849 if (HasParallelMove()) { | 2864 if (HasParallelMove()) { |
2850 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); | 2865 compiler->parallel_move_resolver()->EmitNativeCode(parallel_move()); |
2851 } | 2866 } |
2852 | 2867 |
2853 // Restore SP from FP as we are coming from a throw and the code for | 2868 // Restore SP from FP as we are coming from a throw and the code for |
2854 // popping arguments has not been run. | 2869 // popping arguments has not been run. |
2855 const intptr_t fp_sp_dist = | 2870 const intptr_t fp_sp_dist = |
2856 (kFirstLocalSlotFromFp + 1 - compiler->StackSize()) * kWordSize; | 2871 (kFirstLocalSlotFromFp + 1 - compiler->StackSize()) * kWordSize; |
2857 ASSERT(fp_sp_dist <= 0); | 2872 ASSERT(fp_sp_dist <= 0); |
2858 __ AddImmediate(SP, FP, fp_sp_dist); | 2873 __ AddImmediate(SP, FP, fp_sp_dist); |
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6985 1, | 7000 1, |
6986 locs()); | 7001 locs()); |
6987 __ Drop(1); | 7002 __ Drop(1); |
6988 __ Pop(result); | 7003 __ Pop(result); |
6989 } | 7004 } |
6990 | 7005 |
6991 | 7006 |
6992 } // namespace dart | 7007 } // namespace dart |
6993 | 7008 |
6994 #endif // defined TARGET_ARCH_ARM | 7009 #endif // defined TARGET_ARCH_ARM |
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