Externals/FatFs: Build as part of Dolphin.

Co-authored-by: Pablo Stebler <pablo@stebler.xyz>

CMakeLists.txt

@@ -969,6 +969,8 @@ include_directories(Externals/picojson)
 
 add_subdirectory(Externals/rangeset)
 
+add_subdirectory(Externals/FatFs)
+
 ########################################
 # Pre-build events: Define configuration variables and write SCM info header
 #

Externals/ExternalsReferenceAll.props

@@ -34,6 +34,9 @@
     <ProjectReference Include="$(ExternalsDir)enet\enet.vcxproj">
       <Project>{cbc76802-c128-4b17-bf6c-23b08c313e5e}</Project>
     </ProjectReference>
+    <ProjectReference Include="$(ExternalsDir)FatFs\FatFs.vcxproj">
+      <Project>{3F17D282-A77D-4931-B844-903AD0809A5E}</Project>
+    </ProjectReference>
     <ProjectReference Include="$(ExternalsDir)fmt\fmt.vcxproj">
       <Project>{4BC5A148-0AB3-440F-A980-A29B4B999190}</Project>
     </ProjectReference>

Externals/FatFs/CMakeLists.txt

@@ -0,0 +1,12 @@
+add_library(FatFs STATIC
+	ff.c
+	ffunicode.c
+	diskio.h
+	ff.h
+	ffconf.h
+)
+
+target_include_directories(FatFs
+PUBLIC
+	${CMAKE_CURRENT_SOURCE_DIR}
+)

Externals/FatFs/FatFs.vcxproj

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\Source\VSProps\Base.Macros.props" />
+  <Import Project="$(VSPropsDir)Base.Targets.props" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{3F17D282-A77D-4931-B844-903AD0809A5E}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(VSPropsDir)Configuration.StaticLibrary.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings" />
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VSPropsDir)Base.props" />
+    <Import Project="$(VSPropsDir)ClDisableAllWarnings.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemGroup>
+    <ClCompile Include="ff.c" />
+    <ClCompile Include="ffunicode.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="CMakeLists.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="diskio.h" />
+    <ClInclude Include="ff.h" />
+    <ClInclude Include="ffconf.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

Externals/licenses.md

@@ -14,6 +14,8 @@ Dolphin includes or links code of the following third-party software projects:
    [MIT](https://github.com/discordapp/discord-rpc/blob/master/LICENSE)
 - [ENet](http://enet.bespin.org/):
    [MIT](http://enet.bespin.org/License.html)
+- [FatFs](http://elm-chan.org/fsw/ff/00index_e.html):
+   [BSD-1-Clause](http://elm-chan.org/fsw/ff/doc/appnote.html#license)
 - [GCEmu](http://sourceforge.net/projects/gcemu-project/):
    GPLv2+
 - [gettext](https://www.gnu.org/software/gettext/):

Source/Core/Common/CMakeLists.txt

@@ -44,6 +44,7 @@ add_library(common
   EnumFormatter.h
   EnumMap.h
   Event.h
+  FatFsUtil.cpp
   FileSearch.cpp
   FileSearch.h
   FileUtil.cpp
@@ -144,6 +145,7 @@ PUBLIC
 
 PRIVATE
   ${CURL_LIBRARIES}
+  FatFs
   ${ICONV_LIBRARIES}
   png
   ${VTUNE_LIBRARIES}

Source/Core/Common/FatFsUtil.cpp

@@ -0,0 +1,78 @@
+// Copyright 2022 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <cstdlib>
+#include <mutex>
+
+// Does not compile if diskio.h is included first.
+// clang-format off
+#include "ff.h"
+#include "diskio.h"
+// clang-format on
+
+// For now this is just mostly dummy functions so FatFs actually links.
+
+extern "C" DSTATUS disk_status(BYTE pdrv)
+{
+  return STA_NOINIT;
+}
+
+extern "C" DSTATUS disk_initialize(BYTE pdrv)
+{
+  return STA_NOINIT;
+}
+
+extern "C" DRESULT disk_read(BYTE pdrv, BYTE* buff, LBA_t sector, UINT count)
+{
+  return RES_PARERR;
+}
+
+extern "C" DRESULT disk_write(BYTE pdrv, const BYTE* buff, LBA_t sector, UINT count)
+{
+  return RES_PARERR;
+}
+
+extern "C" DRESULT disk_ioctl(BYTE pdrv, BYTE cmd, void* buff)
+{
+  return RES_PARERR;
+}
+
+extern "C" DWORD get_fattime(void)
+{
+  return 0;
+}
+
+extern "C" void* ff_memalloc(UINT msize)
+{
+  return std::malloc(msize);
+}
+
+extern "C" void ff_memfree(void* mblock)
+{
+  return std::free(mblock);
+}
+
+extern "C" int ff_cre_syncobj(BYTE vol, FF_SYNC_t* sobj)
+{
+  *sobj = new std::recursive_mutex();
+  return *sobj != nullptr;
+}
+
+extern "C" int ff_req_grant(FF_SYNC_t sobj)
+{
+  std::recursive_mutex* m = reinterpret_cast<std::recursive_mutex*>(sobj);
+  m->lock();
+  return 1;
+}
+
+extern "C" void ff_rel_grant(FF_SYNC_t sobj)
+{
+  std::recursive_mutex* m = reinterpret_cast<std::recursive_mutex*>(sobj);
+  m->unlock();
+}
+
+extern "C" int ff_del_syncobj(FF_SYNC_t sobj)
+{
+  delete reinterpret_cast<std::recursive_mutex*>(sobj);
+  return 1;
+}

Source/Core/DolphinLib.props

@@ -725,6 +725,7 @@
     <ClCompile Include="Common\Debug\Watches.cpp" />
     <ClCompile Include="Common\DynamicLibrary.cpp" />
     <ClCompile Include="Common\ENetUtil.cpp" />
+    <ClCompile Include="Common\FatFsUtil.cpp" />
     <ClCompile Include="Common\FileSearch.cpp" />
     <ClCompile Include="Common\FileUtil.cpp" />
     <ClCompile Include="Common\FloatUtils.cpp" />

Source/VSProps/Base.props

@@ -35,6 +35,7 @@
       <AdditionalIncludeDirectories>$(ExternalsDir)ed25519;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)enet\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)FFmpeg-bin\$(Platform)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ExternalsDir)FatFs;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)fmt\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)GL;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)glslang;$(ExternalsDir)glslang\StandAlone;$(ExternalsDir)glslang\glslang\Public;$(ExternalsDir)glslang\SPIRV;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>

Source/dolphin-emu.sln

@@ -83,6 +83,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "spirv_cross", "..\Externals
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SDL2", "..\Externals\SDL\SDL2.vcxproj", "{8DC244EE-A0BD-4038-BAF7-CFAFA5EB2BAA}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "FatFs", "..\Externals\FatFs\FatFs.vcxproj", "{3F17D282-A77D-4931-B844-903AD0809A5E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|ARM64 = Debug|ARM64
@@ -399,6 +401,14 @@ Global
 		{8DC244EE-A0BD-4038-BAF7-CFAFA5EB2BAA}.Release|ARM64.Build.0 = Release|ARM64
 		{8DC244EE-A0BD-4038-BAF7-CFAFA5EB2BAA}.Release|x64.ActiveCfg = Release|x64
 		{8DC244EE-A0BD-4038-BAF7-CFAFA5EB2BAA}.Release|x64.Build.0 = Release|x64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Debug|ARM64.Build.0 = Debug|ARM64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Debug|x64.ActiveCfg = Debug|x64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Debug|x64.Build.0 = Debug|x64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Release|ARM64.ActiveCfg = Release|ARM64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Release|ARM64.Build.0 = Release|ARM64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Release|x64.ActiveCfg = Release|x64
+		{3F17D282-A77D-4931-B844-903AD0809A5E}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -433,6 +443,7 @@ Global
 		{4BC5A148-0AB3-440F-A980-A29B4B999190} = {87ADDFF9-5768-4DA2-A33B-2477593D6677}
 		{3D780617-EC8C-4721-B9FD-DFC9BB658C7C} = {87ADDFF9-5768-4DA2-A33B-2477593D6677}
 		{8DC244EE-A0BD-4038-BAF7-CFAFA5EB2BAA} = {87ADDFF9-5768-4DA2-A33B-2477593D6677}
+		{3F17D282-A77D-4931-B844-903AD0809A5E} = {87ADDFF9-5768-4DA2-A33B-2477593D6677}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {64B0A343-3B94-4522-9C24-6937FE5EFB22}