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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_X87 | 7 #if V8_TARGET_ARCH_X87 |
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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995 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize); | 995 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize); |
996 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); | 996 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); |
997 | 997 |
998 // We will build up the handler from the bottom by pushing on the stack. | 998 // We will build up the handler from the bottom by pushing on the stack. |
999 // First push the context. | 999 // First push the context. |
1000 if (kind == StackHandler::JS_ENTRY) { | 1000 if (kind == StackHandler::JS_ENTRY) { |
1001 push(Immediate(Smi::FromInt(0))); // No context. | 1001 push(Immediate(Smi::FromInt(0))); // No context. |
1002 } else { | 1002 } else { |
1003 push(esi); | 1003 push(esi); |
1004 } | 1004 } |
1005 // Push the state. | 1005 |
1006 unsigned state = | 1006 // Push the index. |
1007 StackHandler::IndexField::encode(handler_index) | | 1007 push(Immediate(handler_index)); |
1008 StackHandler::KindField::encode(kind); | |
1009 push(Immediate(state)); | |
1010 | 1008 |
1011 // Link the current handler as the next handler. | 1009 // Link the current handler as the next handler. |
1012 ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); | 1010 ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
1013 push(Operand::StaticVariable(handler_address)); | 1011 push(Operand::StaticVariable(handler_address)); |
1014 // Set this new handler as the current one. | 1012 // Set this new handler as the current one. |
1015 mov(Operand::StaticVariable(handler_address), esp); | 1013 mov(Operand::StaticVariable(handler_address), esp); |
1016 } | 1014 } |
1017 | 1015 |
1018 | 1016 |
1019 void MacroAssembler::PopTryHandler() { | 1017 void MacroAssembler::PopTryHandler() { |
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3106 if (mag.shift > 0) sar(edx, mag.shift); | 3104 if (mag.shift > 0) sar(edx, mag.shift); |
3107 mov(eax, dividend); | 3105 mov(eax, dividend); |
3108 shr(eax, 31); | 3106 shr(eax, 31); |
3109 add(edx, eax); | 3107 add(edx, eax); |
3110 } | 3108 } |
3111 | 3109 |
3112 | 3110 |
3113 } } // namespace v8::internal | 3111 } } // namespace v8::internal |
3114 | 3112 |
3115 #endif // V8_TARGET_ARCH_X87 | 3113 #endif // V8_TARGET_ARCH_X87 |
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