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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_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
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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1031 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize); | 1031 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize); |
1032 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); | 1032 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); |
1033 | 1033 |
1034 // We will build up the handler from the bottom by pushing on the stack. | 1034 // We will build up the handler from the bottom by pushing on the stack. |
1035 // First push the context. | 1035 // First push the context. |
1036 if (kind == StackHandler::JS_ENTRY) { | 1036 if (kind == StackHandler::JS_ENTRY) { |
1037 push(Immediate(Smi::FromInt(0))); // No context. | 1037 push(Immediate(Smi::FromInt(0))); // No context. |
1038 } else { | 1038 } else { |
1039 push(esi); | 1039 push(esi); |
1040 } | 1040 } |
1041 // Push the state. | 1041 |
1042 unsigned state = | 1042 // Push the index. |
1043 StackHandler::IndexField::encode(handler_index) | | 1043 push(Immediate(handler_index)); |
1044 StackHandler::KindField::encode(kind); | |
1045 push(Immediate(state)); | |
1046 | 1044 |
1047 // Link the current handler as the next handler. | 1045 // Link the current handler as the next handler. |
1048 ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); | 1046 ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
1049 push(Operand::StaticVariable(handler_address)); | 1047 push(Operand::StaticVariable(handler_address)); |
1050 // Set this new handler as the current one. | 1048 // Set this new handler as the current one. |
1051 mov(Operand::StaticVariable(handler_address), esp); | 1049 mov(Operand::StaticVariable(handler_address), esp); |
1052 } | 1050 } |
1053 | 1051 |
1054 | 1052 |
1055 void MacroAssembler::PopTryHandler() { | 1053 void MacroAssembler::PopTryHandler() { |
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3227 if (mag.shift > 0) sar(edx, mag.shift); | 3225 if (mag.shift > 0) sar(edx, mag.shift); |
3228 mov(eax, dividend); | 3226 mov(eax, dividend); |
3229 shr(eax, 31); | 3227 shr(eax, 31); |
3230 add(edx, eax); | 3228 add(edx, eax); |
3231 } | 3229 } |
3232 | 3230 |
3233 | 3231 |
3234 } } // namespace v8::internal | 3232 } } // namespace v8::internal |
3235 | 3233 |
3236 #endif // V8_TARGET_ARCH_IA32 | 3234 #endif // V8_TARGET_ARCH_IA32 |
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