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Issue 1073133002: Reland "Merge cellspace into old pointer space" (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 8 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_ARM 7 #if V8_TARGET_ARCH_ARM
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/bootstrapper.h" 10 #include "src/bootstrapper.h"
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1317 // Patch the (relocated) inlined map check. 1317 // Patch the (relocated) inlined map check.
1318 1318
1319 // The map_load_offset was stored in r5 1319 // The map_load_offset was stored in r5
1320 // (See LCodeGen::DoDeferredLInstanceOfKnownGlobal). 1320 // (See LCodeGen::DoDeferredLInstanceOfKnownGlobal).
1321 const Register map_load_offset = r5; 1321 const Register map_load_offset = r5;
1322 __ sub(r9, lr, map_load_offset); 1322 __ sub(r9, lr, map_load_offset);
1323 // Get the map location in r5 and patch it. 1323 // Get the map location in r5 and patch it.
1324 __ GetRelocatedValueLocation(r9, map_load_offset, scratch); 1324 __ GetRelocatedValueLocation(r9, map_load_offset, scratch);
1325 __ ldr(map_load_offset, MemOperand(map_load_offset)); 1325 __ ldr(map_load_offset, MemOperand(map_load_offset));
1326 __ str(map, FieldMemOperand(map_load_offset, Cell::kValueOffset)); 1326 __ str(map, FieldMemOperand(map_load_offset, Cell::kValueOffset));
1327
1328 __ mov(r8, map);
1329 // |map_load_offset| points at the beginning of the cell. Calculate the
1330 // field containing the map.
1331 __ add(function, map_load_offset, Operand(Cell::kValueOffset - 1));
1332 __ RecordWriteField(map_load_offset, Cell::kValueOffset, r8, function,
1333 kLRHasNotBeenSaved, kDontSaveFPRegs,
1334 OMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
1327 } 1335 }
1328 1336
1329 // Register mapping: r3 is object map and r4 is function prototype. 1337 // Register mapping: r3 is object map and r4 is function prototype.
1330 // Get prototype of object into r2. 1338 // Get prototype of object into r2.
1331 __ ldr(scratch, FieldMemOperand(map, Map::kPrototypeOffset)); 1339 __ ldr(scratch, FieldMemOperand(map, Map::kPrototypeOffset));
1332 1340
1333 // We don't need map any more. Use it as a scratch register. 1341 // We don't need map any more. Use it as a scratch register.
1334 Register scratch2 = map; 1342 Register scratch2 = map;
1335 map = no_reg; 1343 map = no_reg;
1336 1344
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5275 kStackUnwindSpace, NULL, 5283 kStackUnwindSpace, NULL,
5276 MemOperand(fp, 6 * kPointerSize), NULL); 5284 MemOperand(fp, 6 * kPointerSize), NULL);
5277 } 5285 }
5278 5286
5279 5287
5280 #undef __ 5288 #undef __
5281 5289
5282 } } // namespace v8::internal 5290 } } // namespace v8::internal
5283 5291
5284 #endif // V8_TARGET_ARCH_ARM 5292 #endif // V8_TARGET_ARCH_ARM
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