c5ee961882
- Simplified frame entry and frame exit code. - Added ArgumentsAdaptorTrampoline and check for matching argument counts in the InvokePrologue. - Removed definition and uses of USE_OLD_CALLING_CONVENTIONS. - Changed MacroAssembler::InvokeBuiltin to match ia32 version. - Start introducing convenience instructions in the ARM assembler as needed. These instructions take all Register parameters to avoid extra typing of "Operand(reg)". To keep the architectures in sync these changes have been made to the ia32 files: - Changed MacroAssembler::EnterFrame(StackFrame::Type type) to MacroAssembler::EnterInternalFrame(). These parts are still missing: - unimplemented: Builtins::Generate_FunctionApply - large limit - unimplemented: Builtins::Generate_ArgumentsAdaptorTrampoline - non-function call - The files have not been lint'd yet. Review URL: http://codereview.chromium.org/1930 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@289 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
124 lines
4.5 KiB
C++
124 lines
4.5 KiB
C++
// Copyright 2006-2008 the V8 project authors. All rights reserved.
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#include "v8.h"
|
|
|
|
#include "frames-inl.h"
|
|
#include "assembler-arm-inl.h"
|
|
|
|
|
|
namespace v8 { namespace internal {
|
|
|
|
|
|
StackFrame::Type StackFrame::ComputeType(State* state) {
|
|
ASSERT(state->fp != NULL);
|
|
if (StandardFrame::IsArgumentsAdaptorFrame(state->fp)) {
|
|
return ARGUMENTS_ADAPTOR;
|
|
}
|
|
// The marker and function offsets overlap. If the marker isn't a
|
|
// smi then the frame is a JavaScript frame -- and the marker is
|
|
// really the function.
|
|
const int offset = StandardFrameConstants::kMarkerOffset;
|
|
Object* marker = Memory::Object_at(state->fp + offset);
|
|
if (!marker->IsSmi()) return JAVA_SCRIPT;
|
|
return static_cast<StackFrame::Type>(Smi::cast(marker)->value());
|
|
}
|
|
|
|
|
|
StackFrame::Type ExitFrame::GetStateForFramePointer(Address fp, State* state) {
|
|
if (fp == 0) return NONE;
|
|
// Compute frame type and stack pointer.
|
|
Address sp = fp + ExitFrameConstants::kSPDisplacement;
|
|
Type type;
|
|
if (Memory::Address_at(fp + ExitFrameConstants::kDebugMarkOffset) != 0) {
|
|
type = EXIT_DEBUG;
|
|
sp -= kNumJSCallerSaved * kPointerSize;
|
|
} else {
|
|
type = EXIT;
|
|
}
|
|
// Fill in the state.
|
|
state->sp = sp;
|
|
state->fp = fp;
|
|
state->pc_address = reinterpret_cast<Address*>(sp - 1 * kPointerSize);
|
|
return type;
|
|
}
|
|
|
|
|
|
void ExitFrame::Iterate(ObjectVisitor* v) const {
|
|
// Do nothing
|
|
}
|
|
|
|
|
|
int JavaScriptFrame::GetProvidedParametersCount() const {
|
|
return ComputeParametersCount();
|
|
}
|
|
|
|
|
|
Address JavaScriptFrame::GetCallerStackPointer() const {
|
|
int arguments;
|
|
if (Heap::gc_state() != Heap::NOT_IN_GC) {
|
|
// The arguments for cooked frames are traversed as if they were
|
|
// expression stack elements of the calling frame. The reason for
|
|
// this rather strange decision is that we cannot access the
|
|
// function during mark-compact GCs when the stack is cooked.
|
|
// In fact accessing heap objects (like function->shared() below)
|
|
// at all during GC is problematic.
|
|
arguments = 0;
|
|
} else {
|
|
// Compute the number of arguments by getting the number of formal
|
|
// parameters of the function. We must remember to take the
|
|
// receiver into account (+1).
|
|
JSFunction* function = JSFunction::cast(this->function());
|
|
arguments = function->shared()->formal_parameter_count() + 1;
|
|
}
|
|
const int offset = StandardFrameConstants::kCallerSPOffset;
|
|
return fp() + offset + (arguments * kPointerSize);
|
|
}
|
|
|
|
|
|
Address ArgumentsAdaptorFrame::GetCallerStackPointer() const {
|
|
const int arguments = Smi::cast(GetExpression(0))->value();
|
|
const int offset = StandardFrameConstants::kCallerSPOffset;
|
|
return fp() + offset + (arguments + 1) * kPointerSize;
|
|
}
|
|
|
|
|
|
Address InternalFrame::GetCallerStackPointer() const {
|
|
// Internal frames have no arguments. The stack pointer of the
|
|
// caller is at a fixed offset from the frame pointer.
|
|
return fp() + StandardFrameConstants::kCallerSPOffset;
|
|
}
|
|
|
|
|
|
Code* JavaScriptFrame::FindCode() const {
|
|
JSFunction* function = JSFunction::cast(this->function());
|
|
return function->shared()->code();
|
|
}
|
|
|
|
|
|
} } // namespace v8::internal
|