redox/recipes/emulators/flycast/redox.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 87bc605..e878607 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -197,7 +197,7 @@ if(NINTENDO_SWITCH)
 endif()
 
 if(NOT LIBRETRO)
-	if((WIN32 AND NOT MSVC) OR (UNIX AND NOT APPLE AND NOT CMAKE_SYSTEM_NAME MATCHES "(FreeBSD|OpenBSD|NetBSD)"))
+	if((WIN32 AND NOT MSVC) OR (UNIX AND NOT APPLE AND NOT CMAKE_SYSTEM_NAME MATCHES "(FreeBSD|OpenBSD|NetBSD)" AND NOT REDOX))
 		add_subdirectory(core/deps/breakpad)
 		if(WIN32)
 			target_link_options(${PROJECT_NAME} PRIVATE "-Wl,--build-id")
@@ -355,7 +355,10 @@ if(NOT LIBRETRO)
 		if(NOT APPLE)
 			find_package(SDL2)
 		endif()
-		if(NOT SDL2_FOUND)
+		if(REDOX)
+			target_link_libraries(${PROJECT_NAME} PRIVATE "$ENV{SDL_LIBS}")
+			set(SDL2_FOUND 1)
+		elseif(NOT SDL2_FOUND)
 			add_subdirectory(core/deps/SDL EXCLUDE_FROM_ALL)
 			set(SDL2_FOUND 1)
 		endif()
@@ -482,8 +485,10 @@ if(UNIX AND NOT APPLE AND NOT ANDROID)
 		target_link_libraries(${PROJECT_NAME} PRIVATE ${GLES3_LIBRARIES})
 	elseif(USE_OPENGL)
 		set(OpenGL_GL_PREFERENCE LEGACY)
-		find_package(OpenGL REQUIRED)
-		target_link_libraries(${PROJECT_NAME} PRIVATE OpenGL::GL)
+		if(NOT REDOX)
+			find_package(OpenGL REQUIRED)
+			target_link_libraries(${PROJECT_NAME} PRIVATE OpenGL::GL)
+		endif()
 	endif()
 
 	find_package(Threads REQUIRED)
@@ -533,7 +538,7 @@ target_sources(${PROJECT_NAME} PRIVATE
 target_include_directories(${PROJECT_NAME} PRIVATE core/deps/nowide/include)
 
 if(NOT MINIUPNP_FOUND)
-	if(NINTENDO_SWITCH)
+    if(NINTENDO_SWITCH OR REDOX)
 		target_compile_definitions(${PROJECT_NAME} PRIVATE FEAT_NO_MINIUPNPC)
 	else()
 		option(UPNPC_BUILD_SHARED "Build shared library" OFF)
diff --git a/core/build.h b/core/build.h
index a8560f7..1d6a4dd 100755
--- a/core/build.h
+++ b/core/build.h
@@ -227,6 +227,9 @@
 #endif
 #endif
 
+#if defined(__redox__)
+#define TARGET_NO_EXCEPTIONS
+#endif
 
 #if !defined(LIBRETRO) && !defined(TARGET_NO_EXCEPTIONS)
 #define USE_GGPO
diff --git a/core/deps/libzip/lib/zip_name_locate.c b/core/deps/libzip/lib/zip_name_locate.c
index 308d843..f07fd20 100644
--- a/core/deps/libzip/lib/zip_name_locate.c
+++ b/core/deps/libzip/lib/zip_name_locate.c
@@ -32,6 +32,7 @@
 */
 
 
+#include <config.h>
 #include <string.h>
 #ifdef HAVE_STRINGS_H
 #include <strings.h>
diff --git a/core/deps/nowide/include/nowide/convert.hpp b/core/deps/nowide/include/nowide/convert.hpp
index 9c234f7..24d807e 100644
--- a/core/deps/nowide/include/nowide/convert.hpp
+++ b/core/deps/nowide/include/nowide/convert.hpp
@@ -118,6 +118,7 @@ namespace nowide {
     {
         return nowide::conv::utf_to_utf<char>(s);
     }
+#if !defined(__redox__)
     ///
     /// Convert between UTF-8 and UTF-16 string, implemented only on Windows platform
     ///
@@ -145,7 +146,7 @@ namespace nowide {
     {
         return nowide::conv::utf_to_utf<wchar_t>(s);
     }
-
+#endif
 } // nowide
 
 
diff --git a/core/hw/sh4/modules/serial.cpp b/core/hw/sh4/modules/serial.cpp
index 1a7689e..b23bf1b 100644
--- a/core/hw/sh4/modules/serial.cpp
+++ b/core/hw/sh4/modules/serial.cpp
@@ -164,7 +164,7 @@ struct PTYPipe : public SerialPipe
 
 	void init()
 	{
-#if defined(__unix__) || defined(__APPLE__)
+#if (defined(__unix__) || defined(__APPLE__)) && !defined(__redox__)
 		if (config::SerialConsole && config::SerialPTY && tty == 1)
 		{
 			tty = open("/dev/ptmx", O_RDWR | O_NDELAY | O_NOCTTY | O_NONBLOCK);
diff --git a/core/khronos/GL4/gl3w.c b/core/khronos/GL4/gl3w.c
index 661dc1c..f8b6374 100644
--- a/core/khronos/GL4/gl3w.c
+++ b/core/khronos/GL4/gl3w.c
@@ -107,6 +107,26 @@ static GL3WglProc get_proc(const char *proc)
 {
 	return (GL3WglProc)eglGetProcAddress(proc);
 }
+#elif defined(__redox__)
+#include <SDL.h>
+
+static int open_libgl(void)
+{
+	if (SDL_GL_LoadLibrary(NULL) < 0)
+		return GL3W_ERROR_LIBRARY_OPEN;
+
+	return GL3W_OK;
+}
+
+static void close_libgl(void)
+{
+	SDL_GL_UnloadLibrary();
+}
+
+static GL3WglProc get_proc(const char *proc)
+{
+	return (GL3WglProc)SDL_GL_GetProcAddress(proc);
+}
 #else
 #include <dlfcn.h>
 
diff --git a/core/linux-dist/main.cpp b/core/linux-dist/main.cpp
index 365482a..2e16071 100644
--- a/core/linux-dist/main.cpp
+++ b/core/linux-dist/main.cpp
@@ -3,7 +3,7 @@
 #endif
 #include "types.h"
 
-#if defined(__unix__) || defined(__SWITCH__)
+#if defined(__unix__) || defined(__SWITCH__) || defined(__redox__)
 #include "hw/sh4/dyna/blockmanager.h"
 #include "log/LogManager.h"
 #include "emulator.h"
diff --git a/core/linux/posix_vmem.cpp b/core/linux/posix_vmem.cpp
index a2ab3c7..d503eb7 100644
--- a/core/linux/posix_vmem.cpp
+++ b/core/linux/posix_vmem.cpp
@@ -120,7 +120,7 @@ static int allocate_shared_filemem(unsigned size) {
 	// Use Android's specific shmem stuff.
 	fd = ashmem_create_region("RAM", size);
 #else
-	#if !defined(__APPLE__)
+	#if !defined(__APPLE__) && !defined(__redox__)
 		fd = shm_open("/dcnzorz_mem", O_CREAT | O_EXCL | O_RDWR, S_IREAD | S_IWRITE);
 		shm_unlink("/dcnzorz_mem");
 	#endif
@@ -216,6 +216,7 @@ void vmem_platform_destroy()
 void vmem_platform_reset_mem(void *ptr, unsigned size_bytes) {
 	// Mark them as non accessible.
 	mprotect(ptr, size_bytes, PROT_NONE);
+	#if !defined(__redox__)
 	// Tell the kernel to flush'em all (FIXME: perhaps unmap+mmap 'd be better?)
 	madvise(ptr, size_bytes, MADV_DONTNEED);
 	#if defined(MADV_REMOVE)
@@ -223,6 +224,7 @@ void vmem_platform_reset_mem(void *ptr, unsigned size_bytes) {
 	#elif defined(MADV_FREE)
 	madvise(ptr, size_bytes, MADV_FREE);
 	#endif
+	#endif
 }
 
 // Allocates a bunch of memory (page aligned and page-sized)
diff --git a/core/log/StringUtil.h b/core/log/StringUtil.h
index b14a9a6..cd942e7 100644
--- a/core/log/StringUtil.h
+++ b/core/log/StringUtil.h
@@ -24,7 +24,7 @@ int vasprintf(char **s, const char *fmt, va_list ap)
 }
 #endif
 
-#if !defined(_WIN32) && !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__)
+#if !defined(_WIN32) && !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__) && !defined(__redox__)
 static locale_t GetCLocale()
 {
   static locale_t c_locale = newlocale(LC_ALL_MASK, "C", nullptr);
@@ -69,11 +69,11 @@ bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list ar
   writtenCount = vsnprintf(out, outsize, format, args);
 #endif
 #else
-#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__)
+#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__) && !defined(__redox__)
   locale_t previousLocale = uselocale(GetCLocale());
 #endif
   writtenCount = vsnprintf(out, outsize, format, args);
-#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__)
+#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__) && !defined(__redox__)
   uselocale(previousLocale);
 #endif
 #endif
@@ -101,7 +101,7 @@ std::string StringFromFormatV(const char* format, va_list args)
   std::string temp = buf;
   delete[] buf;
 #else
-#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__)
+#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__) && !defined(__redox__)
   locale_t previousLocale = uselocale(GetCLocale());
 #endif
   if (vasprintf(&buf, format, args) < 0)
@@ -110,7 +110,7 @@ std::string StringFromFormatV(const char* format, va_list args)
     buf = nullptr;
   }
 
-#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__)
+#if !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__OpenBSD__) && !defined(__SWITCH__) && !defined(__redox__)
   uselocale(previousLocale);
 #endif
 
diff --git a/core/network/dns.cpp b/core/network/dns.cpp
index af98bfc..423773c 100644
--- a/core/network/dns.cpp
+++ b/core/network/dns.cpp
@@ -148,7 +148,7 @@ char *read_name(char *reader, char *buffer, int *count)
 	return name;
 }
 
-#if !defined(_WIN32) && !defined(__SWITCH__)
+#if !defined(_WIN32) && !defined(__SWITCH__) && !defined(__redox__)
 #include <ifaddrs.h>
 #include <net/if.h>
 #endif
@@ -195,7 +195,7 @@ bool is_local_address(u32 addr)
 		}
 		closesocket(sd);
 
-#elif defined(__SWITCH__)
+#elif defined(__SWITCH__) || defined(__redox__)
 		// TODO
 #else // !_WIN32 && !__SWITCH__
 
diff --git a/core/network/net_platform.h b/core/network/net_platform.h
index 9c6af69..fc6bd45 100644
--- a/core/network/net_platform.h
+++ b/core/network/net_platform.h
@@ -89,7 +89,7 @@ static inline void set_tcp_nodelay(sock_t fd)
 #if defined(_WIN32)
 	struct protoent *tcp_proto = getprotobyname("TCP");
 	setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, (const char *)&optval, optlen);
-#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__NetBSD__)
+#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__redox__)
 	setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&optval, optlen);
 #else
 	struct protoent *tcp_proto = getprotobyname("TCP");
diff --git a/core/rend/TexCache.cpp b/core/rend/TexCache.cpp
index 6654a39..dbc1577 100644
--- a/core/rend/TexCache.cpp
+++ b/core/rend/TexCache.cpp
@@ -783,7 +783,10 @@ void BaseTextureCacheData::Update()
 	height = original_h;
 
 	//lock the texture to detect changes in it
+// TODO: No SIGSEGV handler on redox
+#if !defined(__redox__)
 	protectVRam();
+#endif
 
 	UploadToGPU(upscaled_w, upscaled_h, (const u8 *)temp_tex_buffer, IsMipmapped(), mipmapped);
 	if (config::DumpTextures)
diff --git a/core/types.h b/core/types.h
index d2ea162..3fa816e 100644
--- a/core/types.h
+++ b/core/types.h
@@ -169,6 +169,7 @@ inline static void JITWriteProtect(bool enabled) {
 //includes from c++rt
 #include <vector>
 #include <string>
+#include <strings.h>
 #include <map>
 #include <stdexcept>