Gav Wood
10 years ago
61 changed files with 6750 additions and 4463 deletions
@ -0,0 +1,322 @@ |
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# - Find the Windows SDK aka Platform SDK |
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# |
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# Relevant Wikipedia article: http://en.wikipedia.org/wiki/Microsoft_Windows_SDK |
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# |
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# Variables: |
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# WINDOWSSDK_FOUND - if any version of the windows or platform SDK was found that is usable with the current version of visual studio |
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# WINDOWSSDK_LATEST_DIR |
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# WINDOWSSDK_LATEST_NAME |
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# WINDOWSSDK_FOUND_PREFERENCE - if we found an entry indicating a "preferred" SDK listed for this visual studio version |
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# WINDOWSSDK_PREFERRED_DIR |
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# WINDOWSSDK_PREFERRED_NAME |
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# |
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# WINDOWSSDK_DIRS - contains no duplicates, ordered most recent first. |
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# WINDOWSSDK_PREFERRED_FIRST_DIRS - contains no duplicates, ordered with preferred first, followed by the rest in descending recency |
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# |
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# Functions: |
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# windowssdk_name_lookup(<directory> <output variable>) - Find the name corresponding with the SDK directory you pass in, or |
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# NOTFOUND if not recognized. Your directory must be one of WINDOWSSDK_DIRS for this to work. |
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# |
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# get_windowssdk_from_component(<file or dir> <output variable>) - Given a library or include dir, |
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# find the Windows SDK root dir corresponding to it, or NOTFOUND if unrecognized. |
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# |
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# get_windowssdk_library_dirs(<directory> <output variable>) - Find the architecture-appropriate |
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# library directories corresponding to the SDK directory you pass in (or NOTFOUND if none) |
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# |
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# get_windowssdk_include_dirs(<directory> <output variable>) - Find the |
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# include directories corresponding to the SDK directory you pass in (or NOTFOUND if none) |
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# |
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# Requires these CMake modules: |
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# FindPackageHandleStandardArgs (known included with CMake >=2.6.2) |
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# |
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# Original Author: |
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# 2012 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net> |
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# http://academic.cleardefinition.com |
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# Iowa State University HCI Graduate Program/VRAC |
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# |
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# Copyright Iowa State University 2012. |
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# Distributed under the Boost Software License, Version 1.0. |
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# (See accompanying file LICENSE_1_0.txt or copy at |
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# http://www.boost.org/LICENSE_1_0.txt) |
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|
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set(_preferred_sdk_dirs) |
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set(_win_sdk_dirs) |
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set(_win_sdk_versanddirs) |
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if(MSVC_VERSION GREATER 1310) # Newer than VS .NET/VS Toolkit 2003 |
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|
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# Environment variable for SDK dir |
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if(EXISTS "$ENV{WindowsSDKDir}" AND (NOT "$ENV{WindowsSDKDir}" STREQUAL "")) |
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message(STATUS "Got $ENV{WindowsSDKDir} - Windows/Platform SDK directories: ${_win_sdk_dirs}") |
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list(APPEND _preferred_sdk_dirs "$ENV{WindowsSDKDir}") |
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endif() |
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|
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if(MSVC_VERSION LESS 1600) |
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# Per-user current Windows SDK for VS2005/2008 |
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get_filename_component(_sdkdir |
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"[HKEY_CURRENT_USER\\Software\\Microsoft\\Microsoft SDKs\\Windows;CurrentInstallFolder]" |
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ABSOLUTE) |
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if(EXISTS "${_sdkdir}") |
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list(APPEND _preferred_sdk_dirs "${_sdkdir}") |
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endif() |
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|
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# System-wide current Windows SDK for VS2005/2008 |
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get_filename_component(_sdkdir |
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows;CurrentInstallFolder]" |
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ABSOLUTE) |
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if(EXISTS "${_sdkdir}") |
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list(APPEND _preferred_sdk_dirs "${_sdkdir}") |
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endif() |
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endif() |
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|
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if(MSVC_VERSION LESS 1700) |
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# VC 10 and older has broad target support |
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set(_winsdk_vistaonly) |
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else() |
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# VC 11 by default targets Vista and later only, so we can add a few more SDKs that (might?) only work on vista+ |
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if("${CMAKE_VS_PLATFORM_TOOLSET}" MATCHES "_xp") |
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# This is the XP-compatible v110 toolset |
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elseif("${CMAKE_VS_PLATFORM_TOOLSET}" STREQUAL "v100") |
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# This is the VS2010 toolset |
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else() |
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if(NOT WINDOWSSDK_FOUND AND NOT WindowsSDK_FIND_QUIETLY) |
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message(STATUS "FindWindowsSDK: Detected Visual Studio 2012 or newer, not using the _xp toolset variant: including SDK versions that drop XP support in search!") |
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endif() |
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# These versions have no XP (and possibly Vista pre-SP1) support |
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set(_winsdk_vistaonly) |
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if(NOT MSVC_VERSION LESS 1800) |
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list(APPEND _winsdk_vistaonly |
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# Windows Software Development Kit (SDK) for Windows 8.1 |
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# http://msdn.microsoft.com/en-gb/windows/desktop/bg162891 |
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v8.1) |
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endif() |
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list(APPEND _winsdk_vistaonly |
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# Included in Visual Studio 2012 |
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v8.0A |
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|
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# Microsoft Windows SDK for Windows 8 and .NET Framework 4.5 |
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# This is the first version to also include the DirectX SDK |
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# http://msdn.microsoft.com/en-US/windows/desktop/hh852363.aspx |
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v8.0 |
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|
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# Microsoft Windows SDK for Windows 7 and .NET Framework 4 |
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# http://www.microsoft.com/downloads/en/details.aspx?FamilyID=6b6c21d2-2006-4afa-9702-529fa782d63b |
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v7.1 |
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) |
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endif() |
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endif() |
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foreach(_winsdkver |
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${_winsdk_vistaonly} |
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|
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# Included in Visual Studio 2013 |
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# Includes the v120_xp toolset |
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v8.1A |
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# Included with VS 2012 Update 1 or later |
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# Introduces v110_xp toolset |
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v7.1A |
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|
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# Included with VS 2010 |
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v7.0A |
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|
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# Windows SDK for Windows 7 and .NET Framework 3.5 SP1 |
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# Works with VC9 |
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#http://www.microsoft.com/en-us/download/details.aspx?id=18950 |
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v7.0 |
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|
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# Two versions call themselves "v6.1": |
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# Older: |
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# Windows Vista Update & .NET 3.0 SDK |
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# http://www.microsoft.com/en-us/download/details.aspx?id=14477 |
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|
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# Newer: |
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# Windows Server 2008 & .NET 3.5 SDK |
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# may have broken VS9SP1? they recommend v7.0 instead, or a KB... |
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# http://www.microsoft.com/en-us/download/details.aspx?id=24826 |
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v6.1 |
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|
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# Included in VS 2008 |
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v6.0A |
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|
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# Microsoft Windows Software Development Kit for Windows Vista and .NET Framework 3.0 Runtime Components |
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# http://blogs.msdn.com/b/stanley/archive/2006/11/08/microsoft-windows-software-development-kit-for-windows-vista-and-net-framework-3-0-runtime-components.aspx |
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v6.0) |
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|
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get_filename_component(_sdkdir |
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows\\${_winsdkver};InstallationFolder]" |
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ABSOLUTE) |
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if(EXISTS "${_sdkdir}") |
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list(APPEND _win_sdk_dirs "${_sdkdir}") |
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list(APPEND |
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_win_sdk_versanddirs |
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"Windows SDK ${_winsdkver}" |
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"${_sdkdir}") |
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endif() |
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endforeach() |
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endif() |
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if(MSVC_VERSION GREATER 1200) |
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foreach(_platformsdkinfo |
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"D2FF9F89-8AA2-4373-8A31-C838BF4DBBE1_Microsoft Platform SDK for Windows Server 2003 R2" |
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"8F9E5EF3-A9A5-491B-A889-C58EFFECE8B3_Microsoft Platform SDK for Windows Server 2003 SP1") |
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string(SUBSTRING "${_platformsdkinfo}" 0 36 _platformsdkguid) |
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string(SUBSTRING "${_platformsdkinfo}" 37 -1 _platformsdkname) |
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foreach(HIVE HKEY_LOCAL_MACHINE HKEY_CURRENT_USER) |
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get_filename_component(_sdkdir |
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"[${HIVE}\\SOFTWARE\\Microsoft\\MicrosoftSDK\\InstalledSDKs\\${_platformsdkguid};Install Dir]" |
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ABSOLUTE) |
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if(EXISTS "${_sdkdir}") |
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list(APPEND _win_sdk_dirs "${_sdkdir}") |
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list(APPEND _win_sdk_versanddirs "${_platformsdkname}" "${_sdkdir}") |
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endif() |
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endforeach() |
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endforeach() |
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endif() |
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|
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set(_win_sdk_versanddirs |
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"${_win_sdk_versanddirs}" |
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CACHE |
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INTERNAL |
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"mapping between windows sdk version locations and names" |
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FORCE) |
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|
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function(windowssdk_name_lookup _dir _outvar) |
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list(FIND _win_sdk_versanddirs "${_dir}" _diridx) |
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math(EXPR _nameidx "${_diridx} - 1") |
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if(${_nameidx} GREATER -1) |
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list(GET _win_sdk_versanddirs ${_nameidx} _sdkname) |
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else() |
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set(_sdkname "NOTFOUND") |
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endif() |
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set(${_outvar} "${_sdkname}" PARENT_SCOPE) |
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endfunction() |
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|
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if(_win_sdk_dirs) |
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# Remove duplicates |
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list(REMOVE_DUPLICATES _win_sdk_dirs) |
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list(GET _win_sdk_dirs 0 WINDOWSSDK_LATEST_DIR) |
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windowssdk_name_lookup("${WINDOWSSDK_LATEST_DIR}" |
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WINDOWSSDK_LATEST_NAME) |
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set(WINDOWSSDK_DIRS ${_win_sdk_dirs}) |
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endif() |
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if(_preferred_sdk_dirs) |
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list(GET _preferred_sdk_dirs 0 WINDOWSSDK_PREFERRED_DIR) |
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windowssdk_name_lookup("${WINDOWSSDK_LATEST_DIR}" |
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WINDOWSSDK_PREFERRED_NAME) |
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set(WINDOWSSDK_PREFERRED_FIRST_DIRS |
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${_preferred_sdk_dirs} |
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${_win_sdk_dirs}) |
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list(REMOVE_DUPLICATES WINDOWSSDK_PREFERRED_FIRST_DIRS) |
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set(WINDOWSSDK_FOUND_PREFERENCE ON) |
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|
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# In case a preferred dir was found that isn't found otherwise |
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#set(WINDOWSSDK_DIRS ${WINDOWSSDK_DIRS} ${WINDOWSSDK_PREFERRED_FIRST_DIRS}) |
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#list(REMOVE_DUPLICATES WINDOWSSDK_DIRS) |
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else() |
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set(WINDOWSSDK_PREFERRED_DIR "${WINDOWSSDK_LATEST_DIR}") |
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set(WINDOWSSDK_PREFERRED_NAME "${WINDOWSSDK_LATEST_NAME}") |
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set(WINDOWSSDK_PREFERRED_FIRST_DIRS ${WINDOWSSDK_DIRS}) |
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set(WINDOWSSDK_FOUND_PREFERENCE OFF) |
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endif() |
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|
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include(FindPackageHandleStandardArgs) |
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find_package_handle_standard_args(WindowsSDK |
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"No compatible version of the Windows SDK or Platform SDK found." |
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WINDOWSSDK_DIRS) |
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|
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if(WINDOWSSDK_FOUND) |
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if(NOT _winsdk_remembered_dirs STREQUAL WINDOWSSDK_DIRS) |
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set(_winsdk_remembered_dirs |
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"${WINDOWSSDK_DIRS}" |
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CACHE |
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INTERNAL |
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"" |
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FORCE) |
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if(NOT WindowsSDK_FIND_QUIETLY) |
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foreach(_sdkdir ${WINDOWSSDK_DIRS}) |
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windowssdk_name_lookup("${_sdkdir}" _sdkname) |
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message(STATUS " - Found ${_sdkname} at ${_sdkdir}") |
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endforeach() |
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endif() |
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endif() |
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|
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# Internal: Architecture-appropriate library directory names. |
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if("${CMAKE_VS_PLATFORM_NAME}" STREQUAL "ARM") |
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set(_winsdk_archbare /arm) # what the architecture used to be called in oldest SDKs |
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set(_winsdk_arch arm) # what the architecture used to be called |
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set(_winsdk_arch8 arm) # what the WDK for Win8+ calls this architecture |
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else() |
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if(CMAKE_SIZEOF_VOID_P MATCHES "8") |
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set(_winsdk_archbare /x64) # what the architecture used to be called in oldest SDKs |
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set(_winsdk_arch amd64) # what the architecture used to be called |
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set(_winsdk_arch8 x64) # what the WDK for Win8+ calls this architecture |
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else() |
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set(_winsdk_archbare ) # what the architecture used to be called in oldest SDKs |
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set(_winsdk_arch i386) # what the architecture used to be called |
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set(_winsdk_arch8 x86) # what the WDK for Win8+ calls this architecture |
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endif() |
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endif() |
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|
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function(get_windowssdk_from_component _component _var) |
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get_filename_component(_component "${_component}" ABSOLUTE) |
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file(TO_CMAKE_PATH "${_component}" _component) |
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foreach(_sdkdir ${WINDOWSSDK_DIRS}) |
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get_filename_component(_sdkdir "${_sdkdir}" ABSOLUTE) |
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string(LENGTH "${_sdkdir}" _sdklen) |
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file(RELATIVE_PATH _rel "${_sdkdir}" "${_component}") |
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# If we don't have any "parent directory" items... |
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if(NOT "${_rel}" MATCHES "[.][.]") |
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set(${_var} "${_sdkdir}" PARENT_SCOPE) |
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return() |
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endif() |
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endforeach() |
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# Fail. |
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set(${_var} "NOTFOUND" PARENT_SCOPE) |
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endfunction() |
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function(get_windowssdk_library_dirs _winsdk_dir _var) |
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set(_result) |
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foreach(_suffix |
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"lib${_winsdk_archbare}" # SDKs like 7.1A |
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"lib/w2k/${_winsdk_arch}" # Win2k min requirement |
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"lib/wxp/${_winsdk_arch}" # WinXP min requirement |
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"lib/wnet/${_winsdk_arch}" # Win Server 2003 min requirement |
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"lib/wlh/${_winsdk_arch}" # Win Vista ("Long Horn") min requirement |
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"lib/wlh/um/${_winsdk_arch8}" # Win Vista ("Long Horn") min requirement |
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"lib/win7/${_winsdk_arch}" # Win 7 min requirement |
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"lib/win7/um/${_winsdk_arch8}" # Win 7 min requirement |
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"lib/win8/um/${_winsdk_arch8}" # Win 8 min requirement |
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"lib/win8/km/${_winsdk_arch8}" # Win 8 min requirement |
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"lib/winv6.3/km/${_winsdk_arch8}" # Win 8.1 min requirement |
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"lib/winv6.3/um/${_winsdk_arch8}" # Win 8.1 min requirement |
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) |
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# Check to see if a library actually exists here. |
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file(GLOB _libs "${_winsdk_dir}/${_suffix}/*.lib") |
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if(_libs) |
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list(APPEND _result "${_winsdk_dir}/${_suffix}") |
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endif() |
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endforeach() |
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if(NOT _result) |
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set(_result NOTFOUND) |
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endif() |
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set(${_var} ${_result} PARENT_SCOPE) |
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endfunction() |
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function(get_windowssdk_include_dirs _winsdk_dir _var) |
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set(_result) |
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foreach(_suffix |
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"Include" |
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"Include/shared" |
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"Include/um" |
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"Include/winrt" |
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"Include/km" |
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"Include/wdf" |
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) |
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# Check to see if a header file actually exists here. |
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file(GLOB _headers "${_winsdk_dir}/${_suffix}/*.h") |
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if(_headers) |
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list(APPEND _result "${_winsdk_dir}/${_suffix}") |
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endif() |
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endforeach() |
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if(NOT _result) |
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set(_result NOTFOUND) |
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endif() |
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set(${_var} ${_result} PARENT_SCOPE) |
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endfunction() |
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endif() |
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@ -0,0 +1,128 @@ |
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/*
|
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This file is part of cpp-ethereum. |
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|
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cpp-ethereum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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|
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cpp-ethereum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
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*/ |
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/** @file PathGasMeter.cpp
|
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* @author Christian <c@ethdev.com> |
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* @date 2015 |
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*/ |
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|
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#include "PathGasMeter.h" |
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#include <libevmasm/KnownState.h> |
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#include <libevmasm/SemanticInformation.h> |
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|
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using namespace std; |
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using namespace dev; |
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using namespace dev::eth; |
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|
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PathGasMeter::PathGasMeter(AssemblyItems const& _items): |
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m_items(_items) |
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{ |
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for (size_t i = 0; i < m_items.size(); ++i) |
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if (m_items[i].type() == Tag) |
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m_tagPositions[m_items[i].data()] = i; |
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} |
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|
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GasMeter::GasConsumption PathGasMeter::estimateMax( |
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size_t _startIndex, |
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shared_ptr<KnownState> const& _state |
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) |
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{ |
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auto path = unique_ptr<GasPath>(new GasPath()); |
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path->index = _startIndex; |
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path->state = _state->copy(); |
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m_queue.push_back(move(path)); |
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|
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GasMeter::GasConsumption gas; |
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while (!m_queue.empty() && !gas.isInfinite) |
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gas = max(gas, handleQueueItem()); |
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return gas; |
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} |
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|
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GasMeter::GasConsumption PathGasMeter::handleQueueItem() |
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{ |
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assertThrow(!m_queue.empty(), OptimizerException, ""); |
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|
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unique_ptr<GasPath> path = move(m_queue.back()); |
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m_queue.pop_back(); |
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|
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shared_ptr<KnownState> state = path->state; |
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GasMeter meter(state, path->largestMemoryAccess); |
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ExpressionClasses& classes = state->expressionClasses(); |
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GasMeter::GasConsumption gas = path->gas; |
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size_t index = path->index; |
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|
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if (index >= m_items.size() || (index > 0 && m_items.at(index).type() != Tag)) |
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// Invalid jump usually provokes an out-of-gas exception, but we want to give an upper
|
|||
// bound on the gas that is needed without changing the behaviour, so it is fine to
|
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// return the current gas value.
|
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return gas; |
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|
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set<u256> jumpTags; |
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for (; index < m_items.size() && !gas.isInfinite; ++index) |
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{ |
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bool branchStops = false; |
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jumpTags.clear(); |
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AssemblyItem const& item = m_items.at(index); |
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if (item.type() == Tag || item == AssemblyItem(eth::Instruction::JUMPDEST)) |
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{ |
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// Do not allow any backwards jump. This is quite restrictive but should work for
|
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// the simplest things.
|
|||
if (path->visitedJumpdests.count(index)) |
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return GasMeter::GasConsumption::infinite(); |
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path->visitedJumpdests.insert(index); |
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} |
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else if (item == AssemblyItem(eth::Instruction::JUMP)) |
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{ |
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branchStops = true; |
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jumpTags = state->tagsInExpression(state->relativeStackElement(0)); |
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if (jumpTags.empty()) // unknown jump destination
|
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return GasMeter::GasConsumption::infinite(); |
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} |
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else if (item == AssemblyItem(eth::Instruction::JUMPI)) |
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{ |
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ExpressionClasses::Id condition = state->relativeStackElement(-1); |
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if (classes.knownNonZero(condition) || !classes.knownZero(condition)) |
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{ |
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jumpTags = state->tagsInExpression(state->relativeStackElement(0)); |
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if (jumpTags.empty()) // unknown jump destination
|
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return GasMeter::GasConsumption::infinite(); |
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} |
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branchStops = classes.knownNonZero(condition); |
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} |
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else if (SemanticInformation::altersControlFlow(item)) |
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branchStops = true; |
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|
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gas += meter.estimateMax(item); |
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|
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for (u256 const& tag: jumpTags) |
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{ |
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auto newPath = unique_ptr<GasPath>(new GasPath()); |
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newPath->index = m_items.size(); |
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if (m_tagPositions.count(tag)) |
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newPath->index = m_tagPositions.at(tag); |
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newPath->gas = gas; |
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newPath->largestMemoryAccess = meter.largestMemoryAccess(); |
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newPath->state = state->copy(); |
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newPath->visitedJumpdests = path->visitedJumpdests; |
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m_queue.push_back(move(newPath)); |
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} |
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|
|||
if (branchStops) |
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break; |
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} |
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|
|||
return gas; |
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} |
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@ -0,0 +1,66 @@ |
|||
/*
|
|||
This file is part of cpp-ethereum. |
|||
|
|||
cpp-ethereum is free software: you can redistribute it and/or modify |
|||
it under the terms of the GNU General Public License as published by |
|||
the Free Software Foundation, either version 3 of the License, or |
|||
(at your option) any later version. |
|||
|
|||
cpp-ethereum is distributed in the hope that it will be useful, |
|||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
You should have received a copy of the GNU General Public License |
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
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*/ |
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/** @file PathGasMeter.cpp
|
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* @author Christian <c@ethdev.com> |
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* @date 2015 |
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*/ |
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|
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#pragma once |
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|
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#include <set> |
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#include <vector> |
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#include <memory> |
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#include <libevmasm/GasMeter.h> |
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|
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namespace dev |
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{ |
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namespace eth |
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{ |
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|
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class KnownState; |
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|
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struct GasPath |
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{ |
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size_t index = 0; |
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std::shared_ptr<KnownState> state; |
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u256 largestMemoryAccess; |
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GasMeter::GasConsumption gas; |
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std::set<size_t> visitedJumpdests; |
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}; |
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|
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/**
|
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* Computes an upper bound on the gas usage of a computation starting at a certain position in |
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* a list of AssemblyItems in a given state until the computation stops. |
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* Can be used to estimate the gas usage of functions on any given input. |
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*/ |
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class PathGasMeter |
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{ |
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public: |
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PathGasMeter(AssemblyItems const& _items); |
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|
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GasMeter::GasConsumption estimateMax(size_t _startIndex, std::shared_ptr<KnownState> const& _state); |
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|
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private: |
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GasMeter::GasConsumption handleQueueItem(); |
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|
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std::vector<std::unique_ptr<GasPath>> m_queue; |
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std::map<u256, size_t> m_tagPositions; |
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AssemblyItems const& m_items; |
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}; |
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|
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} |
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} |
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