v8/src/macro-assembler.h
erik.corry@gmail.com 2517b0ef5d Fix some asserts in stub generation and file some bugs where
we appear to have valid asserts triggering.
Review URL: http://codereview.chromium.org/7908005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9305 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-09-15 19:24:04 +00:00

178 lines
4.8 KiB
C++

// Copyright 2011 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.
#ifndef V8_MACRO_ASSEMBLER_H_
#define V8_MACRO_ASSEMBLER_H_
// Helper types to make boolean flag easier to read at call-site.
enum InvokeFlag {
CALL_FUNCTION,
JUMP_FUNCTION
};
enum CodeLocation {
IN_JAVASCRIPT,
IN_JS_ENTRY,
IN_C_ENTRY
};
enum HandlerType {
TRY_CATCH_HANDLER,
TRY_FINALLY_HANDLER,
JS_ENTRY_HANDLER
};
// Types of uncatchable exceptions.
enum UncatchableExceptionType {
OUT_OF_MEMORY,
TERMINATION
};
// Invalid depth in prototype chain.
const int kInvalidProtoDepth = -1;
#if V8_TARGET_ARCH_IA32
#include "assembler.h"
#include "ia32/assembler-ia32.h"
#include "ia32/assembler-ia32-inl.h"
#include "code.h" // must be after assembler_*.h
#include "ia32/macro-assembler-ia32.h"
#elif V8_TARGET_ARCH_X64
#include "assembler.h"
#include "x64/assembler-x64.h"
#include "x64/assembler-x64-inl.h"
#include "code.h" // must be after assembler_*.h
#include "x64/macro-assembler-x64.h"
#elif V8_TARGET_ARCH_ARM
#include "arm/constants-arm.h"
#include "assembler.h"
#include "arm/assembler-arm.h"
#include "arm/assembler-arm-inl.h"
#include "code.h" // must be after assembler_*.h
#include "arm/macro-assembler-arm.h"
#elif V8_TARGET_ARCH_MIPS
#include "mips/constants-mips.h"
#include "assembler.h"
#include "mips/assembler-mips.h"
#include "mips/assembler-mips-inl.h"
#include "code.h" // must be after assembler_*.h
#include "mips/macro-assembler-mips.h"
#else
#error Unsupported target architecture.
#endif
namespace v8 {
namespace internal {
class FrameScope {
public:
explicit FrameScope(MacroAssembler* masm, StackFrame::Type type)
: masm_(masm), type_(type), old_has_frame_(masm->has_frame()) {
masm->set_has_frame(true);
if (type != StackFrame::MANUAL && type_ != StackFrame::NONE) {
masm->EnterFrame(type);
}
}
~FrameScope() {
if (type_ != StackFrame::MANUAL && type_ != StackFrame::NONE) {
masm_->LeaveFrame(type_);
}
masm_->set_has_frame(old_has_frame_);
}
// Normally we generate the leave-frame code when this object goes
// out of scope. Sometimes we may need to generate the code somewhere else
// in addition. Calling this will achieve that, but the object stays in
// scope, the MacroAssembler is still marked as being in a frame scope, and
// the code will be generated again when it goes out of scope.
void GenerateLeaveFrame() {
masm_->LeaveFrame(type_);
}
private:
MacroAssembler* masm_;
StackFrame::Type type_;
bool old_has_frame_;
};
class AllowExternalCallThatCantCauseGC: public FrameScope {
public:
explicit AllowExternalCallThatCantCauseGC(MacroAssembler* masm)
: FrameScope(masm, StackFrame::NONE) { }
};
class NoCurrentFrameScope {
public:
explicit NoCurrentFrameScope(MacroAssembler* masm)
: masm_(masm), saved_(masm->has_frame()) {
masm->set_has_frame(false);
}
~NoCurrentFrameScope() {
masm_->set_has_frame(saved_);
}
private:
MacroAssembler* masm_;
bool saved_;
};
// Support for "structured" code comments.
#ifdef DEBUG
class Comment {
public:
Comment(MacroAssembler* masm, const char* msg);
~Comment();
private:
MacroAssembler* masm_;
const char* msg_;
};
#else
class Comment {
public:
Comment(MacroAssembler*, const char*) {}
};
#endif // DEBUG
} } // namespace v8::internal
#endif // V8_MACRO_ASSEMBLER_H_