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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//*****************************************************************************
//
// Internal data access functionality.
//
//*****************************************************************************
#include "stdafx.h"
#include <winwrap.h>
#include <utilcode.h>
#include <dacprivate.h>
//----------------------------------------------------------------------------
//
// LiveProcDataTarget.
//
//----------------------------------------------------------------------------
LiveProcDataTarget::LiveProcDataTarget(HANDLE process,
DWORD processId,
CLRDATA_ADDRESS baseAddressOfEngine)
{
m_process = process;
m_processId = processId;
m_baseAddressOfEngine = baseAddressOfEngine;
}
STDMETHODIMP
LiveProcDataTarget::QueryInterface(
THIS_
IN REFIID InterfaceId,
OUT PVOID* Interface
)
{
if (InterfaceId == IID_IUnknown ||
InterfaceId == IID_ICLRDataTarget)
{
*Interface = (ICLRDataTarget*)this;
// No need to refcount as this class is contained.
return S_OK;
}
else
{
*Interface = NULL;
return E_NOINTERFACE;
}
}
STDMETHODIMP_(ULONG)
LiveProcDataTarget::AddRef(
THIS
)
{
// No need to refcount as this class is contained.
return 1;
}
STDMETHODIMP_(ULONG)
LiveProcDataTarget::Release(
THIS
)
{
SUPPORTS_DAC_HOST_ONLY;
// No need to refcount as this class is contained.
return 0;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::GetMachineType(
/* [out] */ ULONG32 *machine)
{
LIMITED_METHOD_CONTRACT;
#if defined(_TARGET_X86_)
*machine = IMAGE_FILE_MACHINE_I386;
#elif defined(_TARGET_AMD64_)
*machine = IMAGE_FILE_MACHINE_AMD64;
#elif defined(_TARGET_ARM_)
*machine = IMAGE_FILE_MACHINE_ARMNT;
#else
PORTABILITY_ASSERT("Unknown Processor");
#endif
return S_OK;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::GetPointerSize(
/* [out] */ ULONG32 *size)
{
LIMITED_METHOD_CONTRACT;
*size = sizeof(void*);
return S_OK;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::GetImageBase(
/* [string][in] */ LPCWSTR name,
/* [out] */ CLRDATA_ADDRESS *base)
{
//
// The only image base that the access code cares
// about right now is the base of mscorwks.
//
if (wcscmp(name, MAIN_CLR_DLL_NAME_W))
{
return E_NOINTERFACE;
}
//
// If a base address was specified, use that
//
if (NULL != m_baseAddressOfEngine)
{
*base = m_baseAddressOfEngine;
return S_OK;
}
//
// Our creator must have told us WHICH clr to work with.
//
return E_FAIL;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::ReadVirtual(
/* [in] */ CLRDATA_ADDRESS address,
/* [length_is][size_is][out] */ PBYTE buffer,
/* [in] */ ULONG32 request,
/* [optional][out] */ ULONG32 *done)
{
// ReadProcessMemory will fail if any part of the
// region to read does not have read access. This
// routine attempts to read the largest valid prefix
// so it has to break up reads on page boundaries.
HRESULT status = S_OK;
ULONG32 totalDone = 0;
SIZE_T read;
ULONG32 readSize;
while (request > 0)
{
// Calculate bytes to read and don't let read cross
// a page boundary.
readSize = GetOsPageSize() - (ULONG32)(address & (GetOsPageSize() - 1));
readSize = min(request, readSize);
if (!ReadProcessMemory(m_process, (PVOID)(ULONG_PTR)address,
buffer, readSize, &read))
{
if (totalDone == 0)
{
// If we haven't read anything indicate failure.
status = E_FAIL;
}
break;
}
totalDone += (ULONG32)read;
address += read;
buffer += read;
request -= (ULONG32)read;
}
*done = totalDone;
return status;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::WriteVirtual(
/* [in] */ CLRDATA_ADDRESS address,
/* [size_is][in] */ PBYTE buffer,
/* [in] */ ULONG32 request,
/* [optional][out] */ ULONG32 *done)
{
// Not necessary yet.
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::GetTLSValue(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 index,
/* [out] */ CLRDATA_ADDRESS* value)
{
SUPPORTS_DAC;
// Not necessary yet.
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::SetTLSValue(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 index,
/* [in] */ CLRDATA_ADDRESS value)
{
// Not necessary yet.
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::GetCurrentThreadID(
/* [out] */ ULONG32* threadID)
{
SUPPORTS_DAC;
// Not necessary yet.
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::GetThreadContext(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 contextFlags,
/* [in] */ ULONG32 contextSize,
/* [out, size_is(contextSize)] */ PBYTE context)
{
// Not necessary yet.
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::SetThreadContext(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 contextSize,
/* [out, size_is(contextSize)] */ PBYTE context)
{
// Not necessary yet.
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
LiveProcDataTarget::Request(
/* [in] */ ULONG32 reqCode,
/* [in] */ ULONG32 inBufferSize,
/* [size_is][in] */ BYTE *inBuffer,
/* [in] */ ULONG32 outBufferSize,
/* [size_is][out] */ BYTE *outBuffer)
{
// None supported.
return E_INVALIDARG;
}
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