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88 lines
3.5 KiB
88 lines
3.5 KiB
// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_IC_INL_H_
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#define V8_IC_INL_H_
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#include "ic.h"
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#include "debug.h"
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#include "macro-assembler.h"
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namespace v8 { namespace internal {
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Address IC::address() {
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// Get the address of the call.
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Address result = pc() - Assembler::kTargetAddrToReturnAddrDist;
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// First check if any break points are active if not just return the address
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// of the call.
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if (!Debug::has_break_points()) return result;
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// At least one break point is active perform additional test to ensure that
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// break point locations are updated correctly.
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if (Debug::IsDebugBreak(Assembler::target_address_at(result))) {
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// If the call site is a call to debug break then return the address in
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// the original code instead of the address in the running code. This will
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// cause the original code to be updated and keeps the breakpoint active in
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// the running code.
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return OriginalCodeAddress();
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} else {
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// No break point here just return the address of the call.
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return result;
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}
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}
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Code* IC::GetTargetAtAddress(Address address) {
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// Get the target address of the IC.
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Address target = Assembler::target_address_at(address);
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// Convert target address to the code object. Code::GetCodeFromTargetAddress
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// is safe for use during GC where the map might be marked.
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Code* result = Code::GetCodeFromTargetAddress(target);
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ASSERT(result->is_inline_cache_stub());
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return result;
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}
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void IC::SetTargetAtAddress(Address address, Code* target) {
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ASSERT(target->is_inline_cache_stub());
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Assembler::set_target_address_at(address, target->instruction_start());
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}
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Map* IC::GetCodeCacheMapForObject(Object* object) {
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if (object->IsJSObject()) return JSObject::cast(object)->map();
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// If the object is a value, we use the prototype map for the cache.
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ASSERT(object->IsString() || object->IsNumber() || object->IsBoolean());
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return JSObject::cast(object->GetPrototype())->map();
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}
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} } // namespace v8::internal
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#endif // V8_IC_INL_H_
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