13ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch// Copyright 2012 the V8 project authors. All rights reserved. 2b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// Redistribution and use in source and binary forms, with or without 3b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// modification, are permitted provided that the following conditions are 4b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// met: 5b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// 6b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// * Redistributions of source code must retain the above copyright 7b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// notice, this list of conditions and the following disclaimer. 8b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// * Redistributions in binary form must reproduce the above 9b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// copyright notice, this list of conditions and the following 10b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// disclaimer in the documentation and/or other materials provided 11b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// with the distribution. 12b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// * Neither the name of Google Inc. nor the names of its 13b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// contributors may be used to endorse or promote products derived 14b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// from this software without specific prior written permission. 15b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// 16b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 28b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#include "v8.h" 29b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 30b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#if defined(V8_TARGET_ARCH_IA32) 31b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 32b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#include "codegen.h" 33b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#include "deoptimizer.h" 34b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#include "full-codegen.h" 35b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#include "safepoint-table.h" 36b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 37b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochnamespace v8 { 38b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochnamespace internal { 39b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 4069a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdochconst int Deoptimizer::table_entry_size_ = 10; 41b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 421e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 431e0659c275bb392c045087af4f6b0d7565cb3d77Steve Blockint Deoptimizer::patch_size() { 441e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return Assembler::kCallInstructionLength; 451e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 471e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 4844f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid Deoptimizer::EnsureRelocSpaceForLazyDeoptimization(Handle<Code> code) { 4944f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate* isolate = code->GetIsolate(); 5044f0eee88ff00398ff7f715fab053374d808c90dSteve Block HandleScope scope(isolate); 5144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 5244f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Compute the size of relocation information needed for the code 5344f0eee88ff00398ff7f715fab053374d808c90dSteve Block // patching in Deoptimizer::DeoptimizeFunction. 5444f0eee88ff00398ff7f715fab053374d808c90dSteve Block int min_reloc_size = 0; 552b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch int prev_pc_offset = 0; 562b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch DeoptimizationInputData* deopt_data = 572b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch DeoptimizationInputData::cast(code->deoptimization_data()); 582b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch for (int i = 0; i < deopt_data->DeoptCount(); i++) { 592b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch int pc_offset = deopt_data->Pc(i)->value(); 602b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch if (pc_offset == -1) continue; 612b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch ASSERT_GE(pc_offset, prev_pc_offset); 622b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch int pc_delta = pc_offset - prev_pc_offset; 632b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // We use RUNTIME_ENTRY reloc info which has a size of 2 bytes 642b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // if encodable with small pc delta encoding and up to 6 bytes 652b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // otherwise. 662b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch if (pc_delta <= RelocInfo::kMaxSmallPCDelta) { 672b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch min_reloc_size += 2; 682b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch } else { 692b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch min_reloc_size += 6; 7044f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 712b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch prev_pc_offset = pc_offset; 7244f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 7344f0eee88ff00398ff7f715fab053374d808c90dSteve Block 7444f0eee88ff00398ff7f715fab053374d808c90dSteve Block // If the relocation information is not big enough we create a new 7544f0eee88ff00398ff7f715fab053374d808c90dSteve Block // relocation info object that is padded with comments to make it 7644f0eee88ff00398ff7f715fab053374d808c90dSteve Block // big enough for lazy doptimization. 7744f0eee88ff00398ff7f715fab053374d808c90dSteve Block int reloc_length = code->relocation_info()->length(); 7844f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (min_reloc_size > reloc_length) { 7944f0eee88ff00398ff7f715fab053374d808c90dSteve Block int comment_reloc_size = RelocInfo::kMinRelocCommentSize; 8044f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Padding needed. 8144f0eee88ff00398ff7f715fab053374d808c90dSteve Block int min_padding = min_reloc_size - reloc_length; 8244f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Number of comments needed to take up at least that much space. 8344f0eee88ff00398ff7f715fab053374d808c90dSteve Block int additional_comments = 8444f0eee88ff00398ff7f715fab053374d808c90dSteve Block (min_padding + comment_reloc_size - 1) / comment_reloc_size; 8544f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Actual padding size. 8644f0eee88ff00398ff7f715fab053374d808c90dSteve Block int padding = additional_comments * comment_reloc_size; 8744f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Allocate new relocation info and copy old relocation to the end 8844f0eee88ff00398ff7f715fab053374d808c90dSteve Block // of the new relocation info array because relocation info is 8944f0eee88ff00398ff7f715fab053374d808c90dSteve Block // written and read backwards. 9044f0eee88ff00398ff7f715fab053374d808c90dSteve Block Factory* factory = isolate->factory(); 9144f0eee88ff00398ff7f715fab053374d808c90dSteve Block Handle<ByteArray> new_reloc = 9244f0eee88ff00398ff7f715fab053374d808c90dSteve Block factory->NewByteArray(reloc_length + padding, TENURED); 9344f0eee88ff00398ff7f715fab053374d808c90dSteve Block memcpy(new_reloc->GetDataStartAddress() + padding, 9444f0eee88ff00398ff7f715fab053374d808c90dSteve Block code->relocation_info()->GetDataStartAddress(), 9544f0eee88ff00398ff7f715fab053374d808c90dSteve Block reloc_length); 9644f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Create a relocation writer to write the comments in the padding 9744f0eee88ff00398ff7f715fab053374d808c90dSteve Block // space. Use position 0 for everything to ensure short encoding. 9844f0eee88ff00398ff7f715fab053374d808c90dSteve Block RelocInfoWriter reloc_info_writer( 9944f0eee88ff00398ff7f715fab053374d808c90dSteve Block new_reloc->GetDataStartAddress() + padding, 0); 10044f0eee88ff00398ff7f715fab053374d808c90dSteve Block intptr_t comment_string 10144f0eee88ff00398ff7f715fab053374d808c90dSteve Block = reinterpret_cast<intptr_t>(RelocInfo::kFillerCommentString); 1023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch RelocInfo rinfo(0, RelocInfo::COMMENT, comment_string, NULL); 10344f0eee88ff00398ff7f715fab053374d808c90dSteve Block for (int i = 0; i < additional_comments; ++i) { 10444f0eee88ff00398ff7f715fab053374d808c90dSteve Block#ifdef DEBUG 10544f0eee88ff00398ff7f715fab053374d808c90dSteve Block byte* pos_before = reloc_info_writer.pos(); 10644f0eee88ff00398ff7f715fab053374d808c90dSteve Block#endif 10744f0eee88ff00398ff7f715fab053374d808c90dSteve Block reloc_info_writer.Write(&rinfo); 10844f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(RelocInfo::kMinRelocCommentSize == 10944f0eee88ff00398ff7f715fab053374d808c90dSteve Block pos_before - reloc_info_writer.pos()); 11044f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 11144f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Replace relocation information on the code object. 11244f0eee88ff00398ff7f715fab053374d808c90dSteve Block code->set_relocation_info(*new_reloc); 11344f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 11444f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 11544f0eee88ff00398ff7f715fab053374d808c90dSteve Block 116b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 11744f0eee88ff00398ff7f715fab053374d808c90dSteve Blockvoid Deoptimizer::DeoptimizeFunction(JSFunction* function) { 118b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (!function->IsOptimized()) return; 119b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 12044f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate* isolate = function->GetIsolate(); 12144f0eee88ff00398ff7f715fab053374d808c90dSteve Block HandleScope scope(isolate); 12244f0eee88ff00398ff7f715fab053374d808c90dSteve Block AssertNoAllocation no_allocation; 12344f0eee88ff00398ff7f715fab053374d808c90dSteve Block 124b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Get the optimized code. 125b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Code* code = function->code(); 1261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Address code_start_address = code->instruction_start(); 1271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // We will overwrite the code's relocation info in-place. Relocation info 1291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // is written backward. The relocation info is the payload of a byte 1301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // array. Later on we will slide this to the start of the byte array and 1311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // create a filler object in the remaining space. 1321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ByteArray* reloc_info = code->relocation_info(); 1331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Address reloc_end_address = reloc_info->address() + reloc_info->Size(); 1341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block RelocInfoWriter reloc_info_writer(reloc_end_address, code_start_address); 1351e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1362b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // For each LLazyBailout instruction insert a call to the corresponding 1372b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // deoptimization entry. 1382b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch 1392b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // Since the call is a relative encoding, write new 1401e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // reloc info. We do not need any of the existing reloc info because the 1411e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // existing code will not be used again (we zap it in debug builds). 1422b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // 1432b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // Emit call to lazy deoptimization at all lazy deopt points. 1442b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch DeoptimizationInputData* deopt_data = 1452b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch DeoptimizationInputData::cast(code->deoptimization_data()); 1462b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch#ifdef DEBUG 1472b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch Address prev_call_address = NULL; 1482b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch#endif 1492b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch for (int i = 0; i < deopt_data->DeoptCount(); i++) { 1502b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch if (deopt_data->Pc(i)->value() == -1) continue; 1512b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // Patch lazy deoptimization entry. 1522b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch Address call_address = code_start_address + deopt_data->Pc(i)->value(); 1532b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch CodePatcher patcher(call_address, patch_size()); 1542b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch Address deopt_entry = GetDeoptimizationEntry(i, LAZY); 1552b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch patcher.masm()->call(deopt_entry, RelocInfo::NONE); 1562b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch // We use RUNTIME_ENTRY for deoptimization bailouts. 1572b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch RelocInfo rinfo(call_address + 1, // 1 after the call opcode. 1582b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch RelocInfo::RUNTIME_ENTRY, 1593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch reinterpret_cast<intptr_t>(deopt_entry), 1603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch NULL); 1612b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch reloc_info_writer.Write(&rinfo); 1622b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch ASSERT_GE(reloc_info_writer.pos(), 1632b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch reloc_info->address() + ByteArray::kHeaderSize); 1642b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch ASSERT(prev_call_address == NULL || 1652b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch call_address >= prev_call_address + patch_size()); 1662b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch ASSERT(call_address + patch_size() <= code->instruction_end()); 1672b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch#ifdef DEBUG 1682b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch prev_call_address = call_address; 1692b4ba1175df6a5a6b9b5cda034189197bf6565ecBen Murdoch#endif 170b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1711e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Move the relocation info to the beginning of the byte array. 1731e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int new_reloc_size = reloc_end_address - reloc_info_writer.pos(); 1741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block memmove(code->relocation_start(), reloc_info_writer.pos(), new_reloc_size); 1751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The relocation info is in place, update the size. 1771e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block reloc_info->set_length(new_reloc_size); 1781e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Handle the junk part after the new relocation info. We will create 1801e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // a non-live object in the extra space at the end of the former reloc info. 1811e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Address junk_address = reloc_info->address() + reloc_info->Size(); 1821e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ASSERT(junk_address <= reloc_end_address); 18344f0eee88ff00398ff7f715fab053374d808c90dSteve Block isolate->heap()->CreateFillerObjectAt(junk_address, 18444f0eee88ff00398ff7f715fab053374d808c90dSteve Block reloc_end_address - junk_address); 185b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 186b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Add the deoptimizing code to the list. 187b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch DeoptimizingCodeListNode* node = new DeoptimizingCodeListNode(code); 18844f0eee88ff00398ff7f715fab053374d808c90dSteve Block DeoptimizerData* data = isolate->deoptimizer_data(); 18944f0eee88ff00398ff7f715fab053374d808c90dSteve Block node->set_next(data->deoptimizing_code_list_); 19044f0eee88ff00398ff7f715fab053374d808c90dSteve Block data->deoptimizing_code_list_ = node; 191b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1923ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // We might be in the middle of incremental marking with compaction. 1933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Tell collector to treat this code object in a special way and 1943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // ignore all slots that might have been recorded on it. 1953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate->heap()->mark_compact_collector()->InvalidateCode(code); 1963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 197b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Set the code for the function to non-optimized version. 198b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch function->ReplaceCode(function->shared()->code()); 199b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 200b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_deopt) { 201b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF("[forced deoptimization: "); 202b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch function->PrintName(); 203b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" / %x]\n", reinterpret_cast<uint32_t>(function)); 204b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 205b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 206b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 207b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic const byte kJnsInstruction = 0x79; 2093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic const byte kJnsOffset = 0x13; 2103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic const byte kJaeInstruction = 0x73; 2113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic const byte kJaeOffset = 0x07; 2123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic const byte kCallInstruction = 0xe8; 2133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic const byte kNopByteOne = 0x66; 2143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic const byte kNopByteTwo = 0x90; 2153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2173ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Deoptimizer::PatchStackCheckCodeAt(Code* unoptimized_code, 2183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Address pc_after, 2191e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Code* check_code, 2201e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Code* replacement_code) { 221e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Address call_target_address = pc_after - kIntSize; 2223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(check_code->entry(), 2233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Assembler::target_address_at(call_target_address)); 224e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // The stack check code matches the pattern: 225e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // 226e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // cmp esp, <limit> 227e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // jae ok 228e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // call <stack guard> 229e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // test eax, <loop nesting depth> 230e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // ok: ... 231e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // 232e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // We will patch away the branch so the code is: 233e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // 234e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // cmp esp, <limit> ;; Not changed 235e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // nop 236e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // nop 237e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // call <on-stack replacment> 238e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // test eax, <loop nesting depth> 239e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // ok: 2403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_count_based_interrupts) { 2423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 3), kJnsInstruction); 2433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 2), kJnsOffset); 2443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 2453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 3), kJaeInstruction); 2463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 2), kJaeOffset); 2473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 2483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 1), kCallInstruction); 2493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch *(call_target_address - 3) = kNopByteOne; 2503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch *(call_target_address - 2) = kNopByteTwo; 251e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Assembler::set_target_address_at(call_target_address, 252e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch replacement_code->entry()); 2533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( 2553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unoptimized_code, call_target_address, replacement_code); 256b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 257b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 258b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Deoptimizer::RevertStackCheckCodeAt(Code* unoptimized_code, 2603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Address pc_after, 2611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Code* check_code, 2621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Code* replacement_code) { 263e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Address call_target_address = pc_after - kIntSize; 2643ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(replacement_code->entry(), 2653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Assembler::target_address_at(call_target_address)); 2663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 267086aeeaae12517475c22695a200be45495516549Ben Murdoch // Replace the nops from patching (Deoptimizer::PatchStackCheckCode) to 268086aeeaae12517475c22695a200be45495516549Ben Murdoch // restore the conditional branch. 2693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 3), kNopByteOne); 2703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 2), kNopByteTwo); 2713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT_EQ(*(call_target_address - 1), kCallInstruction); 2723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_count_based_interrupts) { 2733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch *(call_target_address - 3) = kJnsInstruction; 2743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch *(call_target_address - 2) = kJnsOffset; 2753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 2763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch *(call_target_address - 3) = kJaeInstruction; 2773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch *(call_target_address - 2) = kJaeOffset; 2783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 2791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Assembler::set_target_address_at(call_target_address, 2801e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block check_code->entry()); 2813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch check_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( 2833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unoptimized_code, call_target_address, check_code); 284b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 285b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 286b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 287b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochstatic int LookupBailoutId(DeoptimizationInputData* data, unsigned ast_id) { 288b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ByteArray* translations = data->TranslationByteArray(); 289b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int length = data->DeoptCount(); 290b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < length; i++) { 291b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (static_cast<unsigned>(data->AstId(i)->value()) == ast_id) { 292b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch TranslationIterator it(translations, data->TranslationIndex(i)->value()); 293b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int value = it.Next(); 294b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(Translation::BEGIN == static_cast<Translation::Opcode>(value)); 295b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Read the number of frames. 296b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch value = it.Next(); 297b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (value == 1) return i; 298b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 299b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 300b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch UNREACHABLE(); 301b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return -1; 302b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 303b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 304b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 305b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid Deoptimizer::DoComputeOsrOutputFrame() { 306b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch DeoptimizationInputData* data = DeoptimizationInputData::cast( 307b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch optimized_code_->deoptimization_data()); 308b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned ast_id = data->OsrAstId()->value(); 309b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // TODO(kasperl): This should not be the bailout_id_. It should be 310b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // the ast id. Confusing. 311b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(bailout_id_ == ast_id); 312b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 313b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int bailout_id = LookupBailoutId(data, ast_id); 314b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned translation_index = data->TranslationIndex(bailout_id)->value(); 315b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ByteArray* translations = data->TranslationByteArray(); 316b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 317b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch TranslationIterator iterator(translations, translation_index); 318b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Translation::Opcode opcode = 319b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static_cast<Translation::Opcode>(iterator.Next()); 320b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(Translation::BEGIN == opcode); 321b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch USE(opcode); 322b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int count = iterator.Next(); 3233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch iterator.Next(); // Drop JS frames count. 324b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(count == 1); 325b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch USE(count); 326b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 327b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch opcode = static_cast<Translation::Opcode>(iterator.Next()); 328b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch USE(opcode); 3293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(Translation::JS_FRAME == opcode); 330b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned node_id = iterator.Next(); 331b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch USE(node_id); 332b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(node_id == ast_id); 333b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch JSFunction* function = JSFunction::cast(ComputeLiteral(iterator.Next())); 334b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch USE(function); 335b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(function == function_); 336b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned height = iterator.Next(); 337b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned height_in_bytes = height * kPointerSize; 338b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch USE(height_in_bytes); 339b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 340b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned fixed_size = ComputeFixedSize(function_); 341b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned input_frame_size = input_->GetFrameSize(); 342b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(fixed_size + height_in_bytes == input_frame_size); 343b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 344b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned stack_slot_size = optimized_code_->stack_slots() * kPointerSize; 345b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned outgoing_height = data->ArgumentsStackHeight(bailout_id)->value(); 346b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned outgoing_size = outgoing_height * kPointerSize; 347b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned output_frame_size = fixed_size + stack_slot_size + outgoing_size; 348b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(outgoing_size == 0); // OSR does not happen in the middle of a call. 349b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 350b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_osr) { 351b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF("[on-stack replacement: begin 0x%08" V8PRIxPTR " ", 352b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(function_)); 353b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch function_->PrintName(); 354b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" => node=%u, frame=%d->%d]\n", 355b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ast_id, 356b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_frame_size, 357b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame_size); 358b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 359b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 360b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // There's only one output frame in the OSR case. 361b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_count_ = 1; 362b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_ = new FrameDescription*[1]; 363b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0] = new(output_frame_size) FrameDescription( 364b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame_size, function_); 3653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_[0]->SetFrameType(StackFrame::JAVA_SCRIPT); 366b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 367b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Clear the incoming parameters in the optimized frame to avoid 368b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // confusing the garbage collector. 369b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned output_offset = output_frame_size - kPointerSize; 370b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int parameter_count = function_->shared()->formal_parameter_count() + 1; 371b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < parameter_count; ++i) { 372b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0]->SetFrameSlot(output_offset, 0); 373b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 374b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 375b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 376b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Translate the incoming parameters. This may overwrite some of the 377b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // incoming argument slots we've just cleared. 378b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int input_offset = input_frame_size - kPointerSize; 379b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch bool ok = true; 380b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int limit = input_offset - (parameter_count * kPointerSize); 381b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch while (ok && input_offset > limit) { 382b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ok = DoOsrTranslateCommand(&iterator, &input_offset); 383b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 384b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 385b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // There are no translation commands for the caller's pc and fp, the 386b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // context, and the function. Set them up explicitly. 38744f0eee88ff00398ff7f715fab053374d808c90dSteve Block for (int i = StandardFrameConstants::kCallerPCOffset; 38844f0eee88ff00398ff7f715fab053374d808c90dSteve Block ok && i >= StandardFrameConstants::kMarkerOffset; 38944f0eee88ff00398ff7f715fab053374d808c90dSteve Block i -= kPointerSize) { 390b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch uint32_t input_value = input_->GetFrameSlot(input_offset); 391b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_osr) { 39244f0eee88ff00398ff7f715fab053374d808c90dSteve Block const char* name = "UNKNOWN"; 39344f0eee88ff00398ff7f715fab053374d808c90dSteve Block switch (i) { 39444f0eee88ff00398ff7f715fab053374d808c90dSteve Block case StandardFrameConstants::kCallerPCOffset: 39544f0eee88ff00398ff7f715fab053374d808c90dSteve Block name = "caller's pc"; 39644f0eee88ff00398ff7f715fab053374d808c90dSteve Block break; 39744f0eee88ff00398ff7f715fab053374d808c90dSteve Block case StandardFrameConstants::kCallerFPOffset: 39844f0eee88ff00398ff7f715fab053374d808c90dSteve Block name = "fp"; 39944f0eee88ff00398ff7f715fab053374d808c90dSteve Block break; 40044f0eee88ff00398ff7f715fab053374d808c90dSteve Block case StandardFrameConstants::kContextOffset: 40144f0eee88ff00398ff7f715fab053374d808c90dSteve Block name = "context"; 40244f0eee88ff00398ff7f715fab053374d808c90dSteve Block break; 40344f0eee88ff00398ff7f715fab053374d808c90dSteve Block case StandardFrameConstants::kMarkerOffset: 40444f0eee88ff00398ff7f715fab053374d808c90dSteve Block name = "function"; 40544f0eee88ff00398ff7f715fab053374d808c90dSteve Block break; 40644f0eee88ff00398ff7f715fab053374d808c90dSteve Block } 40744f0eee88ff00398ff7f715fab053374d808c90dSteve Block PrintF(" [esp + %d] <- 0x%08x ; [esp + %d] (fixed part - %s)\n", 408b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset, 409b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_value, 41044f0eee88ff00398ff7f715fab053374d808c90dSteve Block input_offset, 41144f0eee88ff00398ff7f715fab053374d808c90dSteve Block name); 412b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 413b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0]->SetFrameSlot(output_offset, input_->GetFrameSlot(input_offset)); 414b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_offset -= kPointerSize; 415b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 416b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 417b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 418b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Translate the rest of the frame. 419b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch while (ok && input_offset >= 0) { 420b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ok = DoOsrTranslateCommand(&iterator, &input_offset); 421b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 422b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 423b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // If translation of any command failed, continue using the input frame. 424b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (!ok) { 425b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch delete output_[0]; 426b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0] = input_; 427b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0]->SetPc(reinterpret_cast<uint32_t>(from_)); 428b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 4293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Set up the frame pointer and the context pointer. 4305d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch output_[0]->SetRegister(ebp.code(), input_->GetRegister(ebp.code())); 431b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0]->SetRegister(esi.code(), input_->GetRegister(esi.code())); 432b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 433b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned pc_offset = data->OsrPcOffset()->value(); 434b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch uint32_t pc = reinterpret_cast<uint32_t>( 435b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch optimized_code_->entry() + pc_offset); 436b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0]->SetPc(pc); 437b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 43844f0eee88ff00398ff7f715fab053374d808c90dSteve Block Code* continuation = 43944f0eee88ff00398ff7f715fab053374d808c90dSteve Block function->GetIsolate()->builtins()->builtin(Builtins::kNotifyOSR); 440b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[0]->SetContinuation( 441b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<uint32_t>(continuation->entry())); 442b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 443b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_osr) { 444b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF("[on-stack replacement translation %s: 0x%08" V8PRIxPTR " ", 445b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ok ? "finished" : "aborted", 446b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<intptr_t>(function)); 447b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch function->PrintName(); 448b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" => pc=0x%0x]\n", output_[0]->GetPc()); 449b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 450b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 451b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 452b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 4533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Deoptimizer::DoComputeArgumentsAdaptorFrame(TranslationIterator* iterator, 4543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int frame_index) { 4553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next())); 4563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned height = iterator->Next(); 4573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned height_in_bytes = height * kPointerSize; 4583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 4593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" translating arguments adaptor => height=%d\n", height_in_bytes); 4603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 4613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 4623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned fixed_frame_size = ArgumentsAdaptorFrameConstants::kFrameSize; 4633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned output_frame_size = height_in_bytes + fixed_frame_size; 4643ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 4653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Allocate and store the output frame description. 4663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch FrameDescription* output_frame = 4673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch new(output_frame_size) FrameDescription(output_frame_size, function); 4683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameType(StackFrame::ARGUMENTS_ADAPTOR); 4693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 4703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Arguments adaptor can not be topmost or bottommost. 4713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(frame_index > 0 && frame_index < output_count_ - 1); 4723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(output_[frame_index] == NULL); 4733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_[frame_index] = output_frame; 4743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 4753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The top address of the frame is computed from the previous 4763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // frame's top and this frame's size. 4773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch uint32_t top_address; 4783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address = output_[frame_index - 1]->GetTop() - output_frame_size; 4793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetTop(top_address); 4803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 4813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Compute the incoming parameter translation. 4823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int parameter_count = height; 4833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned output_offset = output_frame_size; 4843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch for (int i = 0; i < parameter_count; ++i) { 4853ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 4863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch DoTranslateCommand(iterator, frame_index, output_offset); 4873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 4883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 4893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Read caller's PC from the previous frame. 4903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 4913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch intptr_t callers_pc = output_[frame_index - 1]->GetPc(); 4923ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, callers_pc); 4933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 4943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's pc\n", 4953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, callers_pc); 4963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 4973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 4983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Read caller's FP from the previous frame, and set this frame's FP. 4993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 5003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch intptr_t value = output_[frame_index - 1]->GetFp(); 5013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 5023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch intptr_t fp_value = top_address + output_offset; 5033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFp(fp_value); 5043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 5053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's fp\n", 5063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch fp_value, output_offset, value); 5073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 5083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // A marker value is used in place of the context. 5103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 5113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch intptr_t context = reinterpret_cast<intptr_t>( 5123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); 5133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, context); 5143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 5153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; context (adaptor sentinel)\n", 5163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, context); 5173ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 5183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The function was mentioned explicitly in the ARGUMENTS_ADAPTOR_FRAME. 5203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 5213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch value = reinterpret_cast<intptr_t>(function); 5223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 5233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 5243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; function\n", 5253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, value); 5263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 5273ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Number of incoming arguments. 5293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 5303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch value = reinterpret_cast<uint32_t>(Smi::FromInt(height - 1)); 5313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 5323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 5333ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; argc (%d)\n", 5343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, value, height - 1); 5353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 5363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(0 == output_offset); 5383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Builtins* builtins = isolate_->builtins(); 5403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code* adaptor_trampoline = 5413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch builtins->builtin(Builtins::kArgumentsAdaptorTrampoline); 5423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch uint32_t pc = reinterpret_cast<uint32_t>( 5433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch adaptor_trampoline->instruction_start() + 5443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate_->heap()->arguments_adaptor_deopt_pc_offset()->value()); 5453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetPc(pc); 5463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 5473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Deoptimizer::DoComputeConstructStubFrame(TranslationIterator* iterator, 5503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int frame_index) { 5519413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch Builtins* builtins = isolate_->builtins(); 5529413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch Code* construct_stub = builtins->builtin(Builtins::kJSConstructStubGeneric); 5533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next())); 5543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned height = iterator->Next(); 5553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned height_in_bytes = height * kPointerSize; 5563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 5573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" translating construct stub => height=%d\n", height_in_bytes); 5583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 5593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5609413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch unsigned fixed_frame_size = 7 * kPointerSize; 5613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned output_frame_size = height_in_bytes + fixed_frame_size; 5623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Allocate and store the output frame description. 5643ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch FrameDescription* output_frame = 5653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch new(output_frame_size) FrameDescription(output_frame_size, function); 5663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameType(StackFrame::CONSTRUCT); 5673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Construct stub can not be topmost or bottommost. 5693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(frame_index > 0 && frame_index < output_count_ - 1); 5703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(output_[frame_index] == NULL); 5713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_[frame_index] = output_frame; 5723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The top address of the frame is computed from the previous 5743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // frame's top and this frame's size. 5753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch uint32_t top_address; 5763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address = output_[frame_index - 1]->GetTop() - output_frame_size; 5773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetTop(top_address); 5783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Compute the incoming parameter translation. 5803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int parameter_count = height; 5813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch unsigned output_offset = output_frame_size; 5823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch for (int i = 0; i < parameter_count; ++i) { 5833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 5843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch DoTranslateCommand(iterator, frame_index, output_offset); 5853ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 5863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Read caller's PC from the previous frame. 5883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 5893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch intptr_t callers_pc = output_[frame_index - 1]->GetPc(); 5903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, callers_pc); 5913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 5923ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's pc\n", 5933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, callers_pc); 5943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 5953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 5963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Read caller's FP from the previous frame, and set this frame's FP. 5973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 5983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch intptr_t value = output_[frame_index - 1]->GetFp(); 5993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 6003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch intptr_t fp_value = top_address + output_offset; 6013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFp(fp_value); 6023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 6033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's fp\n", 6043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch fp_value, output_offset, value); 6053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 6063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The context can be gotten from the previous frame. 6083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 6093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch value = output_[frame_index - 1]->GetContext(); 6103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 6113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 6123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; context\n", 6133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, value); 6143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 6153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // A marker value is used in place of the function. 6173ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 6183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::CONSTRUCT)); 6193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 6203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 6213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; function (construct sentinel)\n", 6223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, value); 6233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 6243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6259413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch // The output frame reflects a JSConstructStubGeneric frame. 6269413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch output_offset -= kPointerSize; 6279413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch value = reinterpret_cast<intptr_t>(construct_stub); 6289413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch output_frame->SetFrameSlot(output_offset, value); 6299413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch if (FLAG_trace_deopt) { 6309413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; code object\n", 6319413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch top_address + output_offset, output_offset, value); 6329413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch } 6339413bcbe2192ed4d701281130490e0ba336debdcBen Murdoch 6343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Number of incoming arguments. 6353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 6363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch value = reinterpret_cast<uint32_t>(Smi::FromInt(height - 1)); 6373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 6383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 6393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; argc (%d)\n", 6403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, value, height - 1); 6413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 6423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The newly allocated object was passed as receiver in the artificial 6443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // constructor stub environment created by HEnvironment::CopyForInlining(). 6453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_offset -= kPointerSize; 6463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch value = output_frame->GetFrameSlot(output_frame_size - kPointerSize); 6473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameSlot(output_offset, value); 6483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_deopt) { 6493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; allocated receiver\n", 6503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch top_address + output_offset, output_offset, value); 6513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 6523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(0 == output_offset); 6543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch uint32_t pc = reinterpret_cast<uint32_t>( 6563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch construct_stub->instruction_start() + 6573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate_->heap()->construct_stub_deopt_pc_offset()->value()); 6583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetPc(pc); 6593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 6603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 6623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, 6633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int frame_index) { 664b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int node_id = iterator->Next(); 665b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next())); 666b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned height = iterator->Next(); 667b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned height_in_bytes = height * kPointerSize; 668b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_deopt) { 669b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" translating "); 670b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch function->PrintName(); 671b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" => node=%d, height=%d\n", node_id, height_in_bytes); 672b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 673b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 674b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The 'fixed' part of the frame consists of the incoming parameters and 675b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // the part described by JavaScriptFrameConstants. 676b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned fixed_frame_size = ComputeFixedSize(function); 677b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned input_frame_size = input_->GetFrameSize(); 678b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned output_frame_size = height_in_bytes + fixed_frame_size; 679b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 680b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Allocate and store the output frame description. 681b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch FrameDescription* output_frame = 682b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch new(output_frame_size) FrameDescription(output_frame_size, function); 6833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetFrameType(StackFrame::JAVA_SCRIPT); 684b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 685b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch bool is_bottommost = (0 == frame_index); 686b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch bool is_topmost = (output_count_ - 1 == frame_index); 687b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(frame_index >= 0 && frame_index < output_count_); 688b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(output_[frame_index] == NULL); 689b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_[frame_index] = output_frame; 690b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 691b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The top address for the bottommost output frame can be computed from 692b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // the input frame pointer and the output frame's height. For all 693b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // subsequent output frames, it can be computed from the previous one's 694b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // top address and the current frame's size. 695b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch uint32_t top_address; 696b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (is_bottommost) { 6975d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch // 2 = context and function in the frame. 6985d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch top_address = 6995d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch input_->GetRegister(ebp.code()) - (2 * kPointerSize) - height_in_bytes; 700b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 701b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch top_address = output_[frame_index - 1]->GetTop() - output_frame_size; 702b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 703b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetTop(top_address); 704b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 705b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Compute the incoming parameter translation. 706b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int parameter_count = function->shared()->formal_parameter_count() + 1; 707b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned output_offset = output_frame_size; 708b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned input_offset = input_frame_size; 709b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < parameter_count; ++i) { 710b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 711b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch DoTranslateCommand(iterator, frame_index, output_offset); 712b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 713b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_offset -= (parameter_count * kPointerSize); 714b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 715b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // There are no translation commands for the caller's pc and fp, the 716b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // context, and the function. Synthesize their values and set them up 717b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // explicitly. 718b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // 719b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The caller's pc for the bottommost output frame is the same as in the 720b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // input frame. For all subsequent output frames, it can be read from the 721b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // previous one. This frame's pc can be computed from the non-optimized 722b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // function code and AST id of the bailout. 723b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 724b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_offset -= kPointerSize; 725b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t value; 726b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (is_bottommost) { 727b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch value = input_->GetFrameSlot(input_offset); 728b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 729b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch value = output_[frame_index - 1]->GetPc(); 730b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 731b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetFrameSlot(output_offset, value); 732b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_deopt) { 733b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's pc\n", 734b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch top_address + output_offset, output_offset, value); 735b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 736b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 737b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The caller's frame pointer for the bottommost output frame is the same 738b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // as in the input frame. For all subsequent output frames, it can be 739b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // read from the previous one. Also compute and set this frame's frame 740b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // pointer. 741b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 742b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_offset -= kPointerSize; 743b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (is_bottommost) { 744b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch value = input_->GetFrameSlot(input_offset); 745b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 746b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch value = output_[frame_index - 1]->GetFp(); 747b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 748b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetFrameSlot(output_offset, value); 749b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch intptr_t fp_value = top_address + output_offset; 7505d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch ASSERT(!is_bottommost || input_->GetRegister(ebp.code()) == fp_value); 751b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetFp(fp_value); 752b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (is_topmost) output_frame->SetRegister(ebp.code(), fp_value); 753b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_deopt) { 754b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; caller's fp\n", 755b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch fp_value, output_offset, value); 756b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 757b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 758e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // For the bottommost output frame the context can be gotten from the input 759e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // frame. For all subsequent output frames it can be gotten from the function 760e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // so long as we don't inline functions that need local contexts. 761b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 762b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_offset -= kPointerSize; 763e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (is_bottommost) { 764e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch value = input_->GetFrameSlot(input_offset); 765e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } else { 766e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch value = reinterpret_cast<uint32_t>(function->context()); 767e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 768b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetFrameSlot(output_offset, value); 7693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch output_frame->SetContext(value); 770b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (is_topmost) output_frame->SetRegister(esi.code(), value); 771b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_deopt) { 772b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; context\n", 773b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch top_address + output_offset, output_offset, value); 774b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 775b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 776b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The function was mentioned explicitly in the BEGIN_FRAME. 777b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 778b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch input_offset -= kPointerSize; 779b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch value = reinterpret_cast<uint32_t>(function); 780b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // The function for the bottommost output frame should also agree with the 781b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // input frame. 782b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(!is_bottommost || input_->GetFrameSlot(input_offset) == value); 783b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetFrameSlot(output_offset, value); 784b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_deopt) { 785b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PrintF(" 0x%08x: [top + %d] <- 0x%08x ; function\n", 786b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch top_address + output_offset, output_offset, value); 787b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 788b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 789b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Translate the rest of the frame. 790b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (unsigned i = 0; i < height; ++i) { 791b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_offset -= kPointerSize; 792b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch DoTranslateCommand(iterator, frame_index, output_offset); 793b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 794b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(0 == output_offset); 795b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 796b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Compute this frame's PC, state, and continuation. 797b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Code* non_optimized_code = function->shared()->code(); 798b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch FixedArray* raw_data = non_optimized_code->deoptimization_data(); 799b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch DeoptimizationOutputData* data = DeoptimizationOutputData::cast(raw_data); 800b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Address start = non_optimized_code->instruction_start(); 801b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned pc_and_state = GetOutputInfo(data, node_id, function->shared()); 802b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch unsigned pc_offset = FullCodeGenerator::PcField::decode(pc_and_state); 803b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch uint32_t pc_value = reinterpret_cast<uint32_t>(start + pc_offset); 804b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetPc(pc_value); 805b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 806b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch FullCodeGenerator::State state = 807b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch FullCodeGenerator::StateField::decode(pc_and_state); 808b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetState(Smi::FromInt(state)); 809b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 810b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Set the continuation for the topmost frame. 8113fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (is_topmost && bailout_type_ != DEBUGGER) { 81244f0eee88ff00398ff7f715fab053374d808c90dSteve Block Builtins* builtins = isolate_->builtins(); 813b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Code* continuation = (bailout_type_ == EAGER) 81444f0eee88ff00398ff7f715fab053374d808c90dSteve Block ? builtins->builtin(Builtins::kNotifyDeoptimized) 81544f0eee88ff00398ff7f715fab053374d808c90dSteve Block : builtins->builtin(Builtins::kNotifyLazyDeoptimized); 816b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch output_frame->SetContinuation( 817b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch reinterpret_cast<uint32_t>(continuation->entry())); 818b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 819b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 820b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 821b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 8223fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochvoid Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { 8233fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // Set the register values. The values are not important as there are no 8243fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // callee saved registers in JavaScript frames, so all registers are 8253fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // spilled. Registers ebp and esp are set to the correct values though. 8263fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 8273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int i = 0; i < Register::kNumRegisters; i++) { 8283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch input_->SetRegister(i, i * 4); 8293fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 8303fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch input_->SetRegister(esp.code(), reinterpret_cast<intptr_t>(frame->sp())); 8313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch input_->SetRegister(ebp.code(), reinterpret_cast<intptr_t>(frame->fp())); 8323fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int i = 0; i < DoubleRegister::kNumAllocatableRegisters; i++) { 8333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch input_->SetDoubleRegister(i, 0.0); 8343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 8353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 8363fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // Fill the frame content from the actual data on the frame. 8373fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (unsigned i = 0; i < input_->GetFrameSize(); i += kPointerSize) { 8383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch input_->SetFrameSlot(i, Memory::uint32_at(tos + i)); 8393fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 8403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch} 8413fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 8423fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 843b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#define __ masm()-> 844b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 845b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid Deoptimizer::EntryGenerator::Generate() { 846b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch GeneratePrologue(); 847b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch CpuFeatures::Scope scope(SSE2); 848b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 84944f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate* isolate = masm()->isolate(); 85044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 851b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Save all general purpose registers before messing with them. 852b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int kNumberOfRegisters = Register::kNumRegisters; 853b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 854b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int kDoubleRegsSize = kDoubleSize * 855b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch XMMRegister::kNumAllocatableRegisters; 8563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ sub(esp, Immediate(kDoubleRegsSize)); 857b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; ++i) { 858b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); 859b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int offset = i * kDoubleSize; 860b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ movdbl(Operand(esp, offset), xmm_reg); 861b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 862b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 863b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ pushad(); 864b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 865b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch const int kSavedRegistersAreaSize = kNumberOfRegisters * kPointerSize + 866b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch kDoubleRegsSize; 867b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 868b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Get the bailout id from the stack. 869b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(ebx, Operand(esp, kSavedRegistersAreaSize)); 870b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 871b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Get the address of the location in the code object if possible 872b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // and compute the fp-to-sp delta in register edx. 873b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (type() == EAGER) { 874b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ Set(ecx, Immediate(0)); 875b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ lea(edx, Operand(esp, kSavedRegistersAreaSize + 1 * kPointerSize)); 876b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 877b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(ecx, Operand(esp, kSavedRegistersAreaSize + 1 * kPointerSize)); 878b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ lea(edx, Operand(esp, kSavedRegistersAreaSize + 2 * kPointerSize)); 879b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 8803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ sub(edx, ebp); 881b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ neg(edx); 882b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 883b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Allocate a new deoptimizer object. 8848b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch __ PrepareCallCFunction(6, eax); 885b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); 886b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(Operand(esp, 0 * kPointerSize), eax); // Function. 887b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(Operand(esp, 1 * kPointerSize), Immediate(type())); // Bailout type. 888b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(Operand(esp, 2 * kPointerSize), ebx); // Bailout id. 889b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(Operand(esp, 3 * kPointerSize), ecx); // Code address or 0. 890b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(Operand(esp, 4 * kPointerSize), edx); // Fp-to-sp delta. 8918b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch __ mov(Operand(esp, 5 * kPointerSize), 8928b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch Immediate(ExternalReference::isolate_address())); 8933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch { 8943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch AllowExternalCallThatCantCauseGC scope(masm()); 8953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate), 6); 8963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 897b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 898b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Preserve deoptimizer object in register eax and get the input 899b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // frame descriptor pointer. 900b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(ebx, Operand(eax, Deoptimizer::input_offset())); 901b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 902b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Fill in the input registers. 9031e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block for (int i = kNumberOfRegisters - 1; i >= 0; i--) { 9041e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int offset = (i * kPointerSize) + FrameDescription::registers_offset(); 9051e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block __ pop(Operand(ebx, offset)); 906b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 907b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 908b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Fill in the double input registers. 909b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int double_regs_offset = FrameDescription::double_registers_offset(); 910b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; ++i) { 911b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int dst_offset = i * kDoubleSize + double_regs_offset; 9121e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int src_offset = i * kDoubleSize; 913b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ movdbl(xmm0, Operand(esp, src_offset)); 914b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ movdbl(Operand(ebx, dst_offset), xmm0); 915b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 916b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 9171e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Remove the bailout id and the double registers from the stack. 918b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (type() == EAGER) { 9193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ add(esp, Immediate(kDoubleRegsSize + kPointerSize)); 920b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 9213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ add(esp, Immediate(kDoubleRegsSize + 2 * kPointerSize)); 922b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 923b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 924b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Compute a pointer to the unwinding limit in register ecx; that is 925b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // the first stack slot not part of the input frame. 926b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(ecx, Operand(ebx, FrameDescription::frame_size_offset())); 9273ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ add(ecx, esp); 928b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 929b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Unwind the stack down to - but not including - the unwinding 930b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // limit and copy the contents of the activation frame to the input 931b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // frame description. 932b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ lea(edx, Operand(ebx, FrameDescription::frame_content_offset())); 933b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label pop_loop; 934b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ bind(&pop_loop); 935b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ pop(Operand(edx, 0)); 9363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ add(edx, Immediate(sizeof(uint32_t))); 9373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ cmp(ecx, esp); 938b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ j(not_equal, &pop_loop); 939b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 940b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Compute the output frame in the deoptimizer. 941b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ push(eax); 942b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ PrepareCallCFunction(1, ebx); 943b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(Operand(esp, 0 * kPointerSize), eax); 9443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch { 9453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch AllowExternalCallThatCantCauseGC scope(masm()); 9463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ CallCFunction( 9473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ExternalReference::compute_output_frames_function(isolate), 1); 9483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 949b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ pop(eax); 950b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 951b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Replace the current frame with the output frames. 952b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label outer_push_loop, inner_push_loop; 953b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Outer loop state: eax = current FrameDescription**, edx = one past the 954b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // last FrameDescription**. 955b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(edx, Operand(eax, Deoptimizer::output_count_offset())); 956b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(eax, Operand(eax, Deoptimizer::output_offset())); 957b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ lea(edx, Operand(eax, edx, times_4, 0)); 958b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ bind(&outer_push_loop); 959b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Inner loop state: ebx = current FrameDescription*, ecx = loop index. 960b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(ebx, Operand(eax, 0)); 961b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ mov(ecx, Operand(ebx, FrameDescription::frame_size_offset())); 962b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ bind(&inner_push_loop); 9633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ sub(ecx, Immediate(sizeof(uint32_t))); 964b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ push(Operand(ebx, ecx, times_1, FrameDescription::frame_content_offset())); 9653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ test(ecx, ecx); 966b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ j(not_zero, &inner_push_loop); 9673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ add(eax, Immediate(kPointerSize)); 9683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ cmp(eax, edx); 969b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ j(below, &outer_push_loop); 970b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 971b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // In case of OSR, we have to restore the XMM registers. 972b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (type() == OSR) { 973b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; ++i) { 974b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); 975b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int src_offset = i * kDoubleSize + double_regs_offset; 976b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ movdbl(xmm_reg, Operand(ebx, src_offset)); 977b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 978b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 979b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 980b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Push state, pc, and continuation from the last output frame. 981b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (type() != OSR) { 982b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ push(Operand(ebx, FrameDescription::state_offset())); 983b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 984b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ push(Operand(ebx, FrameDescription::pc_offset())); 985b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ push(Operand(ebx, FrameDescription::continuation_offset())); 986b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 987b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 988b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Push the registers from the last output frame. 989b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < kNumberOfRegisters; i++) { 9901e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int offset = (i * kPointerSize) + FrameDescription::registers_offset(); 991b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ push(Operand(ebx, offset)); 992b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 993b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 994b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Restore the registers from the stack. 995b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ popad(); 996b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 997b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Return to the continuation point. 998b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ ret(0); 999b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 1000b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1001b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1002b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochvoid Deoptimizer::TableEntryGenerator::GeneratePrologue() { 1003b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Create a sequence of deoptimization entries. 1004b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Label done; 1005b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch for (int i = 0; i < count(); i++) { 1006b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int start = masm()->pc_offset(); 1007b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch USE(start); 1008b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ push_imm32(i); 1009b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ jmp(&done); 1010b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(masm()->pc_offset() - start == table_entry_size_); 1011b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1012b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch __ bind(&done); 1013b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 1014b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1015b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#undef __ 1016b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1017b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1018b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} } // namespace v8::internal 1019b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1020b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#endif // V8_TARGET_ARCH_IA32 1021