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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 <limits.h> // For LONG_MIN, LONG_MAX. | 5 #include <limits.h> // For LONG_MIN, LONG_MAX. |
6 | 6 |
7 #include "src/v8.h" | 7 #include "src/v8.h" |
8 | 8 |
9 #if V8_TARGET_ARCH_ARM | 9 #if V8_TARGET_ARCH_ARM |
10 | 10 |
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1389 | 1389 |
1390 void MacroAssembler::DebugBreak() { | 1390 void MacroAssembler::DebugBreak() { |
1391 mov(r0, Operand::Zero()); | 1391 mov(r0, Operand::Zero()); |
1392 mov(r1, Operand(ExternalReference(Runtime::kDebugBreak, isolate()))); | 1392 mov(r1, Operand(ExternalReference(Runtime::kDebugBreak, isolate()))); |
1393 CEntryStub ces(isolate(), 1); | 1393 CEntryStub ces(isolate(), 1); |
1394 DCHECK(AllowThisStubCall(&ces)); | 1394 DCHECK(AllowThisStubCall(&ces)); |
1395 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); | 1395 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); |
1396 } | 1396 } |
1397 | 1397 |
1398 | 1398 |
1399 void MacroAssembler::PushTryHandler(StackHandler::Kind kind, | 1399 void MacroAssembler::PushStackHandler() { |
1400 int handler_index) { | |
1401 // Adjust this code if not the case. | 1400 // Adjust this code if not the case. |
1402 STATIC_ASSERT(StackHandlerConstants::kSize == 3 * kPointerSize); | 1401 STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
1403 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); | 1402 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
1404 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize); | |
1405 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); | |
1406 | |
1407 // For the JSEntry handler, we must preserve r0-r4, r5-r6 are available. | |
1408 // We will build up the handler from the bottom by pushing on the stack. | |
1409 // Set up the the index (r6) for pushing. | |
1410 mov(r6, Operand(handler_index)); | |
1411 | |
1412 // Push the context and index. | |
1413 if (kind == StackHandler::JS_ENTRY) { | |
1414 mov(cp, Operand(Smi::FromInt(0))); // Indicates no context. | |
1415 stm(db_w, sp, r6.bit() | cp.bit()); | |
1416 } else { | |
1417 stm(db_w, sp, r6.bit() | cp.bit()); | |
1418 } | |
1419 | 1403 |
1420 // Link the current handler as the next handler. | 1404 // Link the current handler as the next handler. |
1421 mov(r6, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); | 1405 mov(r6, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
1422 ldr(r5, MemOperand(r6)); | 1406 ldr(r5, MemOperand(r6)); |
1423 push(r5); | 1407 push(r5); |
| 1408 |
1424 // Set this new handler as the current one. | 1409 // Set this new handler as the current one. |
1425 str(sp, MemOperand(r6)); | 1410 str(sp, MemOperand(r6)); |
1426 } | 1411 } |
1427 | 1412 |
1428 | 1413 |
1429 void MacroAssembler::PopTryHandler() { | 1414 void MacroAssembler::PopStackHandler() { |
1430 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); | 1415 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
1431 pop(r1); | 1416 pop(r1); |
1432 mov(ip, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); | 1417 mov(ip, Operand(ExternalReference(Isolate::kHandlerAddress, isolate()))); |
1433 add(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); | 1418 add(sp, sp, Operand(StackHandlerConstants::kSize - kPointerSize)); |
1434 str(r1, MemOperand(ip)); | 1419 str(r1, MemOperand(ip)); |
1435 } | 1420 } |
1436 | 1421 |
1437 | 1422 |
1438 void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, | 1423 void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
1439 Register scratch, | 1424 Register scratch, |
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3891 } | 3876 } |
3892 } | 3877 } |
3893 if (mag.shift > 0) mov(result, Operand(result, ASR, mag.shift)); | 3878 if (mag.shift > 0) mov(result, Operand(result, ASR, mag.shift)); |
3894 add(result, result, Operand(dividend, LSR, 31)); | 3879 add(result, result, Operand(dividend, LSR, 31)); |
3895 } | 3880 } |
3896 | 3881 |
3897 } // namespace internal | 3882 } // namespace internal |
3898 } // namespace v8 | 3883 } // namespace v8 |
3899 | 3884 |
3900 #endif // V8_TARGET_ARCH_ARM | 3885 #endif // V8_TARGET_ARCH_ARM |
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