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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_X64 | 7 #if V8_TARGET_ARCH_X64 |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/base/division-by-constant.h" | 10 #include "src/base/division-by-constant.h" |
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2988 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); | 2988 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); |
2989 | 2989 |
2990 // We will build up the handler from the bottom by pushing on the stack. | 2990 // We will build up the handler from the bottom by pushing on the stack. |
2991 // First push the context. | 2991 // First push the context. |
2992 if (kind == StackHandler::JS_ENTRY) { | 2992 if (kind == StackHandler::JS_ENTRY) { |
2993 Push(Smi::FromInt(0)); // No context. | 2993 Push(Smi::FromInt(0)); // No context. |
2994 } else { | 2994 } else { |
2995 Push(rsi); | 2995 Push(rsi); |
2996 } | 2996 } |
2997 | 2997 |
2998 // Push the index. | 2998 // Push the state. |
2999 Push(Immediate(handler_index)); | 2999 unsigned state = |
| 3000 StackHandler::IndexField::encode(handler_index) | |
| 3001 StackHandler::KindField::encode(kind); |
| 3002 Push(Immediate(state)); |
3000 | 3003 |
3001 // Link the current handler as the next handler. | 3004 // Link the current handler as the next handler. |
3002 ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); | 3005 ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
3003 Push(ExternalOperand(handler_address)); | 3006 Push(ExternalOperand(handler_address)); |
3004 // Set this new handler as the current one. | 3007 // Set this new handler as the current one. |
3005 movp(ExternalOperand(handler_address), rsp); | 3008 movp(ExternalOperand(handler_address), rsp); |
3006 } | 3009 } |
3007 | 3010 |
3008 | 3011 |
3009 void MacroAssembler::PopTryHandler() { | 3012 void MacroAssembler::PopTryHandler() { |
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5076 if (mag.shift > 0) sarl(rdx, Immediate(mag.shift)); | 5079 if (mag.shift > 0) sarl(rdx, Immediate(mag.shift)); |
5077 movl(rax, dividend); | 5080 movl(rax, dividend); |
5078 shrl(rax, Immediate(31)); | 5081 shrl(rax, Immediate(31)); |
5079 addl(rdx, rax); | 5082 addl(rdx, rax); |
5080 } | 5083 } |
5081 | 5084 |
5082 | 5085 |
5083 } } // namespace v8::internal | 5086 } } // namespace v8::internal |
5084 | 5087 |
5085 #endif // V8_TARGET_ARCH_X64 | 5088 #endif // V8_TARGET_ARCH_X64 |
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