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| 1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 190 // There are no translation commands for the caller's pc and fp, the | 190 // There are no translation commands for the caller's pc and fp, the |
| 191 // context, and the function. Synthesize their values and set them up | 191 // context, and the function. Synthesize their values and set them up |
| 192 // explicitly. | 192 // explicitly. |
| 193 // | 193 // |
| 194 // The caller's pc for the bottommost output frame is the same as in the | 194 // The caller's pc for the bottommost output frame is the same as in the |
| 195 // input frame. For all subsequent output frames, it can be read from the | 195 // input frame. For all subsequent output frames, it can be read from the |
| 196 // previous one. This frame's pc can be computed from the non-optimized | 196 // previous one. This frame's pc can be computed from the non-optimized |
| 197 // function code and AST id of the bailout. | 197 // function code and AST id of the bailout. |
| 198 output_offset -= kPointerSize; | 198 output_offset -= kPointerSize; |
| 199 input_offset -= kPointerSize; | 199 input_offset -= kPointerSize; |
| 200 uint32_t value; | 200 intptr_t value; |
| 201 if (is_bottommost) { | 201 if (is_bottommost) { |
| 202 value = input_->GetFrameSlot(input_offset); | 202 value = input_->GetFrameSlot(input_offset); |
| 203 } else { | 203 } else { |
| 204 value = output_[frame_index - 1]->GetPc(); | 204 value = output_[frame_index - 1]->GetPc(); |
| 205 } | 205 } |
| 206 output_frame->SetFrameSlot(output_offset, value); | 206 output_frame->SetFrameSlot(output_offset, value); |
| 207 if (FLAG_trace_deopt) { | 207 if (FLAG_trace_deopt) { |
| 208 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's pc\n", | 208 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's pc\n", |
| 209 top_address + output_offset, output_offset, value); | 209 top_address + output_offset, output_offset, value); |
| 210 } | 210 } |
| 211 | 211 |
| 212 // The caller's frame pointer for the bottommost output frame is the same | 212 // The caller's frame pointer for the bottommost output frame is the same |
| 213 // as in the input frame. For all subsequent output frames, it can be | 213 // as in the input frame. For all subsequent output frames, it can be |
| 214 // read from the previous one. Also compute and set this frame's frame | 214 // read from the previous one. Also compute and set this frame's frame |
| 215 // pointer. | 215 // pointer. |
| 216 output_offset -= kPointerSize; | 216 output_offset -= kPointerSize; |
| 217 input_offset -= kPointerSize; | 217 input_offset -= kPointerSize; |
| 218 if (is_bottommost) { | 218 if (is_bottommost) { |
| 219 value = input_->GetFrameSlot(input_offset); | 219 value = input_->GetFrameSlot(input_offset); |
| 220 } else { | 220 } else { |
| 221 value = output_[frame_index - 1]->GetFp(); | 221 value = output_[frame_index - 1]->GetFp(); |
| 222 } | 222 } |
| 223 output_frame->SetFrameSlot(output_offset, value); | 223 output_frame->SetFrameSlot(output_offset, value); |
| 224 unsigned fp_value = top_address + output_offset; | 224 intptr_t fp_value = top_address + output_offset; |
| 225 ASSERT(!is_bottommost || input_->GetRegister(fp.code()) == fp_value); | 225 ASSERT(!is_bottommost || input_->GetRegister(fp.code()) == fp_value); |
| 226 output_frame->SetFp(fp_value); | 226 output_frame->SetFp(fp_value); |
| 227 if (is_topmost) { | 227 if (is_topmost) { |
| 228 output_frame->SetRegister(fp.code(), fp_value); | 228 output_frame->SetRegister(fp.code(), fp_value); |
| 229 } | 229 } |
| 230 if (FLAG_trace_deopt) { | 230 if (FLAG_trace_deopt) { |
| 231 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's fp\n", | 231 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's fp\n", |
| 232 fp_value, output_offset, value); | 232 fp_value, output_offset, value); |
| 233 } | 233 } |
| 234 | 234 |
| 235 // The context can be gotten from the function so long as we don't | 235 // The context can be gotten from the function so long as we don't |
| 236 // optimize functions that need local contexts. | 236 // optimize functions that need local contexts. |
| 237 output_offset -= kPointerSize; | 237 output_offset -= kPointerSize; |
| 238 input_offset -= kPointerSize; | 238 input_offset -= kPointerSize; |
| 239 value = reinterpret_cast<uint32_t>(function->context()); | 239 value = reinterpret_cast<intptr_t>(function->context()); |
| 240 // The context for the bottommost output frame should also agree with the | 240 // The context for the bottommost output frame should also agree with the |
| 241 // input frame. | 241 // input frame. |
| 242 ASSERT(!is_bottommost || input_->GetFrameSlot(input_offset) == value); | 242 ASSERT(!is_bottommost || input_->GetFrameSlot(input_offset) == value); |
| 243 output_frame->SetFrameSlot(output_offset, value); | 243 output_frame->SetFrameSlot(output_offset, value); |
| 244 if (is_topmost) { | 244 if (is_topmost) { |
| 245 output_frame->SetRegister(cp.code(), value); | 245 output_frame->SetRegister(cp.code(), value); |
| 246 } | 246 } |
| 247 if (FLAG_trace_deopt) { | 247 if (FLAG_trace_deopt) { |
| 248 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; context\n", | 248 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; context\n", |
| 249 top_address + output_offset, output_offset, value); | 249 top_address + output_offset, output_offset, value); |
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| 497 __ push(ip); | 497 __ push(ip); |
| 498 __ b(&done); | 498 __ b(&done); |
| 499 ASSERT(masm()->pc_offset() - start == table_entry_size_); | 499 ASSERT(masm()->pc_offset() - start == table_entry_size_); |
| 500 } | 500 } |
| 501 __ bind(&done); | 501 __ bind(&done); |
| 502 } | 502 } |
| 503 | 503 |
| 504 #undef __ | 504 #undef __ |
| 505 | 505 |
| 506 } } // namespace v8::internal | 506 } } // namespace v8::internal |
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