MacroAssemblerCodeRef.h [plain text]
#ifndef MacroAssemblerCodeRef_h
#define MacroAssemblerCodeRef_h
#include "ExecutableAllocator.h"
#include "PassRefPtr.h"
#include "RefPtr.h"
#include "UnusedParam.h"
#if ENABLE(ASSEMBLER)
#if CPU(ARM_THUMB2)
#define ASSERT_VALID_CODE_POINTER(ptr) \
ASSERT(reinterpret_cast<intptr_t>(ptr) & ~1); \
ASSERT(reinterpret_cast<intptr_t>(ptr) & 1)
#define ASSERT_VALID_CODE_OFFSET(offset) \
ASSERT(!(offset & 1)) #else
#define ASSERT_VALID_CODE_POINTER(ptr) \
ASSERT(ptr)
#define ASSERT_VALID_CODE_OFFSET(offset) // Anything goes!
#endif
namespace JSC {
class FunctionPtr {
public:
FunctionPtr()
: m_value(0)
{
}
template<typename returnType>
FunctionPtr(returnType(*value)())
: m_value((void*)value)
{
ASSERT_VALID_CODE_POINTER(m_value);
}
template<typename returnType, typename argType1>
FunctionPtr(returnType(*value)(argType1))
: m_value((void*)value)
{
ASSERT_VALID_CODE_POINTER(m_value);
}
template<typename returnType, typename argType1, typename argType2>
FunctionPtr(returnType(*value)(argType1, argType2))
: m_value((void*)value)
{
ASSERT_VALID_CODE_POINTER(m_value);
}
template<typename returnType, typename argType1, typename argType2, typename argType3>
FunctionPtr(returnType(*value)(argType1, argType2, argType3))
: m_value((void*)value)
{
ASSERT_VALID_CODE_POINTER(m_value);
}
template<typename returnType, typename argType1, typename argType2, typename argType3, typename argType4>
FunctionPtr(returnType(*value)(argType1, argType2, argType3, argType4))
: m_value((void*)value)
{
ASSERT_VALID_CODE_POINTER(m_value);
}
template<typename FunctionType>
explicit FunctionPtr(FunctionType* value)
: m_value((void*)value)
{
ASSERT_VALID_CODE_POINTER(m_value);
}
void* value() const { return m_value; }
void* executableAddress() const { return m_value; }
private:
void* m_value;
};
class ReturnAddressPtr {
public:
ReturnAddressPtr()
: m_value(0)
{
}
explicit ReturnAddressPtr(void* value)
: m_value(value)
{
ASSERT_VALID_CODE_POINTER(m_value);
}
explicit ReturnAddressPtr(FunctionPtr function)
: m_value(function.value())
{
ASSERT_VALID_CODE_POINTER(m_value);
}
void* value() const { return m_value; }
private:
void* m_value;
};
class MacroAssemblerCodePtr {
public:
MacroAssemblerCodePtr()
: m_value(0)
{
}
explicit MacroAssemblerCodePtr(void* value)
#if CPU(ARM_THUMB2)
: m_value(reinterpret_cast<char*>(value) + 1)
#else
: m_value(value)
#endif
{
ASSERT_VALID_CODE_POINTER(m_value);
}
explicit MacroAssemblerCodePtr(ReturnAddressPtr ra)
: m_value(ra.value())
{
ASSERT_VALID_CODE_POINTER(m_value);
}
void* executableAddress() const { return m_value; }
#if CPU(ARM_THUMB2)
void* dataLocation() const { ASSERT_VALID_CODE_POINTER(m_value); return reinterpret_cast<char*>(m_value) - 1; }
#else
void* dataLocation() const { ASSERT_VALID_CODE_POINTER(m_value); return m_value; }
#endif
bool operator!() const
{
return !m_value;
}
private:
void* m_value;
};
class MacroAssemblerCodeRef {
public:
MacroAssemblerCodeRef()
: m_size(0)
{
}
MacroAssemblerCodeRef(void* code, PassRefPtr<ExecutablePool> executablePool, size_t size)
: m_code(code)
, m_executablePool(executablePool)
, m_size(size)
{
}
MacroAssemblerCodePtr m_code;
RefPtr<ExecutablePool> m_executablePool;
size_t m_size;
};
}
#endif // ENABLE(ASSEMBLER)
#endif // MacroAssemblerCodeRef_h