libretro: add VFS implementation

Externals/libretro-common/include/boolean.h

@@ -0,0 +1,39 @@
+/* Copyright  (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (boolean.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_BOOLEAN_H
+#define __LIBRETRO_SDK_BOOLEAN_H
+
+#ifndef __cplusplus
+
+#if defined(_MSC_VER) && _MSC_VER < 1800 && !defined(SN_TARGET_PS3)
+/* Hack applied for MSVC when compiling in C89 mode as it isn't C99 compliant. */
+#define bool unsigned char
+#define true 1
+#define false 0
+#else
+#include <stdbool.h>
+#endif
+
+#endif
+
+#endif

Externals/Libretro/Include/libretro.h → Externals/libretro-common/include/libretro.h

@@ -2920,6 +2920,19 @@ typedef int (RETRO_CALLCONV *retro_vfs_rename_t)(const char *old_path, const cha
  */
 typedef int (RETRO_CALLCONV *retro_vfs_stat_t)(const char *path, int32_t *size);
 
+/**
+ * Gets information about the given file (64-bit size).
+ *
+ * @param path The path to the file to query.
+ * @param[out] size The reported size of the file in bytes.
+ * May be \c NULL, in which case this value is ignored.
+ * @return A bitmask of \c RETRO_VFS_STAT flags,
+ * or 0 if \c path doesn't refer to a valid file.
+ * @see RETRO_VFS_STAT
+ * @since VFS API v4
+ */
+typedef int (RETRO_CALLCONV *retro_vfs_stat_64_t)(const char *path, int64_t *size);
+
 /**
  * Creates a directory at the given path.
  *
@@ -3075,6 +3088,10 @@ struct retro_vfs_interface
 
    /** @copydoc retro_vfs_closedir_t */
    retro_vfs_closedir_t closedir;
+
+   /* VFS API v4 */
+   /** @copydoc retro_vfs_stat_64_t */
+   retro_vfs_stat_64_t stat_64;
 };
 
 /**

Externals/libretro-common/include/retro_common_api.h

@@ -0,0 +1,139 @@
+/* Copyright  (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_common_api.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _LIBRETRO_COMMON_RETRO_COMMON_API_H
+#define _LIBRETRO_COMMON_RETRO_COMMON_API_H
+
+/*
+This file is designed to normalize the libretro-common compiling environment
+for public API headers. This should be leaner than a normal compiling environment,
+since it gets #included into other project's sources.
+*/
+
+/* ------------------------------------ */
+
+/*
+Ordinarily we want to put #ifdef __cplusplus extern "C" in C library
+headers to enable them to get used by c++ sources.
+However, we want to support building this library as C++ as well, so a
+special technique is called for.
+*/
+
+#define RETRO_BEGIN_DECLS
+#define RETRO_END_DECLS
+
+#ifdef __cplusplus
+
+#ifdef CXX_BUILD
+/* build wants everything to be built as c++, so no extern "C" */
+#else
+#undef RETRO_BEGIN_DECLS
+#undef RETRO_END_DECLS
+#define RETRO_BEGIN_DECLS extern "C" {
+#define RETRO_END_DECLS }
+#endif
+
+#else
+
+/* header is included by a C source file, so no extern "C" */
+
+#endif
+
+/*
+IMO, this non-standard ssize_t should not be used.
+However, it's a good example of how to handle something like this.
+*/
+#ifdef _MSC_VER
+#ifndef HAVE_SSIZE_T
+#define HAVE_SSIZE_T
+#if defined(_WIN64)
+typedef __int64 ssize_t;
+#elif defined(_WIN32)
+typedef int ssize_t;
+#endif
+#endif
+#elif defined(__MACH__)
+#include <sys/types.h>
+#endif
+
+#ifdef _MSC_VER
+#if _MSC_VER >= 1800
+#include <inttypes.h>
+#else
+#ifndef PRId64
+#define PRId64 "I64d"
+#define PRIu64 "I64u"
+#define PRIuPTR "Iu"
+#endif
+#endif
+#else
+/* C++11 says this one isn't needed, but apparently (some versions of) mingw require it anyways */
+/* https://stackoverflow.com/questions/8132399/how-to-printf-uint64-t-fails-with-spurious-trailing-in-format */
+/* https://github.com/libretro/RetroArch/issues/6009 */
+#ifndef __STDC_FORMAT_MACROS
+#define __STDC_FORMAT_MACROS 1
+#endif
+#include <inttypes.h>
+#endif
+#ifndef PRId64
+#error "inttypes.h is being screwy"
+#endif
+#define STRING_REP_INT64 "%" PRId64
+#define STRING_REP_UINT64 "%" PRIu64
+#define STRING_REP_USIZE "%" PRIuPTR
+
+/* Wrap a declaration in RETRO_DEPRECATED() to produce a compiler warning when
+it's used. This is intended for developer machines, so it won't work on ancient
+or obscure compilers */
+#if defined(_MSC_VER)
+#if _MSC_VER >= 1400 /* Visual C 2005 or later */
+#define RETRO_DEPRECATED(decl) __declspec(deprecated) decl
+#endif
+#elif defined(__GNUC__)
+#if __GNUC__ >= 3 /* GCC 3 or later */
+#define RETRO_DEPRECATED(decl) decl __attribute__((deprecated))
+#endif
+#elif defined(__clang__)
+#if __clang_major__ >= 3 /* clang 3 or later */
+#define RETRO_DEPRECATED(decl) decl __attribute__((deprecated))
+#endif
+#endif
+#ifndef RETRO_DEPRECATED /* Unsupported compilers */
+#define RETRO_DEPRECATED(decl) decl
+#endif
+
+/*
+I would like to see retro_inline.h moved in here; possibly boolean too.
+
+rationale: these are used in public APIs, and it is easier to find problems
+and write code that works the first time portably when they are included uniformly
+than to do the analysis from scratch each time you think you need it, for each feature.
+
+Moreover it helps force you to make hard decisions: if you EVER bring in boolean.h,
+then you should pay the price everywhere, so you can see how much grief it will cause.
+
+Of course, another school of thought is that you should do as little damage as possible
+in as few places as possible...
+*/
+
+/* _LIBRETRO_COMMON_RETRO_COMMON_API_H */
+#endif

Externals/libretro-common/include/retro_environment.h

@@ -0,0 +1,111 @@
+/* Copyright  (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_environment.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_ENVIRONMENT_H
+#define __LIBRETRO_SDK_ENVIRONMENT_H
+
+/*
+This file is designed to create a normalized environment for compiling
+libretro-common's private implementations, or any other sources which might
+enjoy use of it's environment (RetroArch for instance).
+This should be an elaborately crafted environment so that sources don't
+need to be full of platform-specific workarounds.
+*/
+
+#if defined (__cplusplus)
+/* The expected values would be
+ *   199711L, for ISO/IEC 14882:1998 or 14882:2003
+ */
+
+#elif defined(__STDC__)
+/* This is standard C. */
+
+#if (__STDC__ == 1)
+/* The implementation is ISO-conforming. */
+#define __STDC_ISO__
+#else
+/* The implementation is not ISO-conforming. */
+#endif
+
+#if defined(__STDC_VERSION__)
+#if (__STDC_VERSION__ >= 201112L)
+/* This is C11. */
+#define __STDC_C11__
+#elif (__STDC_VERSION__ >= 199901L)
+/* This is C99. */
+#define __STDC_C99__
+#elif (__STDC_VERSION__ >= 199409L)
+/* This is C89 with amendment 1. */
+#define __STDC_C89__
+#define __STDC_C89_AMENDMENT_1__
+#else
+/* This is C89 without amendment 1. */
+#define __STDC_C89__
+#endif
+#else /* !defined(__STDC_VERSION__) */
+/* This is C89. __STDC_VERSION__ is not defined. */
+#define __STDC_C89__
+#endif
+
+#else   /* !defined(__STDC__) */
+/* This is not standard C. __STDC__ is not defined. */
+#endif
+
+#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
+/* Try to find out if we're compiling for WinRT or non-WinRT */
+#if defined(_MSC_VER) && defined(__has_include)
+#if __has_include(<winapifamily.h>)
+#define HAVE_WINAPIFAMILY_H 1
+#else
+#define HAVE_WINAPIFAMILY_H 0
+#endif
+
+/* If _USING_V110_SDK71_ is defined it means we are using the Windows XP toolset. */
+#elif defined(_MSC_VER) && (_MSC_VER >= 1700 && !_USING_V110_SDK71_)    /* _MSC_VER == 1700 for Visual Studio 2012 */
+#define HAVE_WINAPIFAMILY_H 1
+#else
+#define HAVE_WINAPIFAMILY_H 0
+#endif
+
+#if HAVE_WINAPIFAMILY_H
+#include <winapifamily.h>
+#define WINAPI_FAMILY_WINRT (!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP))
+#else
+#define WINAPI_FAMILY_WINRT 0
+#endif /* HAVE_WINAPIFAMILY_H */
+
+#if WINAPI_FAMILY_WINRT
+#undef __WINRT__
+#define __WINRT__ 1
+#endif
+
+/* MSVC obviously has to have some non-standard constants... */
+#if _M_IX86_FP == 1
+#define __SSE__ 1
+#elif _M_IX86_FP == 2 || (defined(_M_AMD64) || defined(_M_X64))
+#define __SSE__ 1
+#define __SSE2__ 1
+#endif
+
+#endif
+
+#endif