From a11985c46d5eab5c61a1034005858286e6f3da3b Mon Sep 17 00:00:00 2001
From: cameron <ccawley2011@gmail.com>
Date: Fri, 28 Apr 2017 00:24:57 +0100
Subject: [PATCH] RISCOS: Add RISC OS support

---
 .gitignore                                   |   1 +
 backends/platform/sdl/module.mk              |   6 ++
 backends/platform/sdl/posix/posix-main.cpp   |   2 +-
 backends/platform/sdl/riscos/riscos-main.cpp |  53 ++++++++++
 backends/platform/sdl/riscos/riscos.cpp      | 106 +++++++++++++++++++
 backends/platform/sdl/riscos/riscos.h        |  52 +++++++++
 backends/platform/sdl/riscos/riscos.mk       |  20 ++++
 configure                                    |  38 ++++++-
 dists/riscos/!Boot,feb                       |   8 ++
 dists/riscos/!Help,feb                       |   1 +
 dists/riscos/!Run,feb                        |  13 +++
 dists/riscos/!Sprites,ff9                    | Bin 0 -> 7324 bytes
 dists/riscos/!Sprites11,ff9                  | Bin 0 -> 11132 bytes
 13 files changed, 294 insertions(+), 6 deletions(-)
 create mode 100644 backends/platform/sdl/riscos/riscos-main.cpp
 create mode 100644 backends/platform/sdl/riscos/riscos.cpp
 create mode 100644 backends/platform/sdl/riscos/riscos.h
 create mode 100644 backends/platform/sdl/riscos/riscos.mk
 create mode 100644 dists/riscos/!Boot,feb
 create mode 100644 dists/riscos/!Help,feb
 create mode 100644 dists/riscos/!Run,feb
 create mode 100644 dists/riscos/!Sprites,ff9
 create mode 100644 dists/riscos/!Sprites11,ff9

diff --git a/.gitignore b/.gitignore
index 1c2edd7ace1..8981b94acb4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,6 +21,7 @@ lib*.a
 /MT32_PCM.ROM
 /ScummVM.app
 /scummvm.docktileplugin
+/\!ScummVM
 /scummvm-ps3.pkg
 /*.ipk
 /.project
diff --git a/backends/platform/sdl/module.mk b/backends/platform/sdl/module.mk
index 7fde04037f1..bb11aaae97a 100644
--- a/backends/platform/sdl/module.mk
+++ b/backends/platform/sdl/module.mk
@@ -31,6 +31,12 @@ MODULE_OBJS += \
 	amigaos/amigaos.o
 endif
 
+ifdef RISCOS
+MODULE_OBJS += \
+	riscos/riscos-main.o \
+	riscos/riscos.o
+endif
+
 ifdef PLAYSTATION3
 MODULE_OBJS += \
 	ps3/ps3-main.o \
diff --git a/backends/platform/sdl/posix/posix-main.cpp b/backends/platform/sdl/posix/posix-main.cpp
index 92354b273ef..e378c37849f 100644
--- a/backends/platform/sdl/posix/posix-main.cpp
+++ b/backends/platform/sdl/posix/posix-main.cpp
@@ -22,7 +22,7 @@
 
 #include "common/scummsys.h"
 
-#if defined(POSIX) && !defined(MACOSX) && !defined(SAMSUNGTV) && !defined(MAEMO) && !defined(WEBOS) && !defined(LINUXMOTO) && !defined(GPH_DEVICE) && !defined(GP2X) && !defined(DINGUX) && !defined(OPENPANDORA) && !defined(PLAYSTATION3) && !defined(PSP2) && !defined(ANDROIDSDL)
+#if defined(POSIX) && !defined(MACOSX) && !defined(SAMSUNGTV) && !defined(MAEMO) && !defined(WEBOS) && !defined(LINUXMOTO) && !defined(GPH_DEVICE) && !defined(GP2X) && !defined(DINGUX) && !defined(OPENPANDORA) && !defined(PLAYSTATION3) && !defined(PSP2) && !defined(ANDROIDSDL) && !defined(RISCOS)
 
 #include "backends/platform/sdl/posix/posix.h"
 #include "backends/plugins/sdl/sdl-provider.h"
diff --git a/backends/platform/sdl/riscos/riscos-main.cpp b/backends/platform/sdl/riscos/riscos-main.cpp
new file mode 100644
index 00000000000..2ff8294c1a3
--- /dev/null
+++ b/backends/platform/sdl/riscos/riscos-main.cpp
@@ -0,0 +1,53 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "common/scummsys.h"
+
+#if defined(RISCOS)
+
+#include "backends/platform/sdl/riscos/riscos.h"
+#include "backends/plugins/sdl/sdl-provider.h"
+#include "base/main.h"
+
+int main(int argc, char *argv[]) {
+	
+	// Create our OSystem instance
+	g_system = new OSystem_RISCOS();
+	assert(g_system);
+
+	// Pre initialize the backend
+	((OSystem_RISCOS *)g_system)->init();
+
+#ifdef DYNAMIC_MODULES
+	PluginManager::instance().addPluginProvider(new SDLPluginProvider());
+#endif
+
+	// Invoke the actual ScummVM main entry point
+	int res = scummvm_main(argc, argv);
+
+	// Free OSystem
+	delete (OSystem_RISCOS *)g_system;
+
+	return res;
+}
+
+#endif
diff --git a/backends/platform/sdl/riscos/riscos.cpp b/backends/platform/sdl/riscos/riscos.cpp
new file mode 100644
index 00000000000..2c761d0f4ca
--- /dev/null
+++ b/backends/platform/sdl/riscos/riscos.cpp
@@ -0,0 +1,106 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#define FORBIDDEN_SYMBOL_EXCEPTION_unistd_h
+
+#include "common/scummsys.h"
+
+#ifdef RISCOS
+
+#include "backends/platform/sdl/riscos/riscos.h"
+#include "backends/saves/default/default-saves.h"
+#include "backends/fs/posix/posix-fs-factory.h"
+#include "backends/fs/posix/posix-fs.h"
+
+#include <kernel.h>
+#include <swis.h>
+
+#ifndef URI_Dispatch
+#define URI_Dispatch 0x4e381
+#endif
+
+void OSystem_RISCOS::init() {
+	// Initialze File System Factory
+	_fsFactory = new POSIXFilesystemFactory();
+
+	// Invoke parent implementation of this method
+	OSystem_SDL::init();
+}
+
+void OSystem_RISCOS::initBackend() {
+	// Create the savefile manager
+	if (_savefileManager == 0) {
+		Common::String savePath = "/<Choices$Write>/ScummVM/Saves";
+		if (Posix::assureDirectoryExists(savePath))
+			_savefileManager = new DefaultSaveFileManager(savePath);
+	}
+
+	// Invoke parent implementation of this method
+	OSystem_SDL::initBackend();
+}
+
+bool OSystem_RISCOS::hasFeature(Feature f) {
+	if (f == kFeatureOpenUrl)
+		return true;
+
+	return OSystem_SDL::hasFeature(f);
+}
+
+bool OSystem_RISCOS::openUrl(const Common::String &url) {
+	int flags;
+	if (_swix(URI_Dispatch, _INR(0,2)|_OUT(0), 0, url.c_str(), 0, &flags) != NULL) {
+		warning("openUrl() (RISCOS) failed to open URL");
+		return false;
+	}
+	if ((flags & 1) == 1) {
+		warning("openUrl() (RISCOS) failed to open URL");
+		return false;
+	}
+	return true;
+}
+
+Common::String OSystem_RISCOS::getDefaultConfigFileName() {
+	return "/<Choices$Write>/ScummVM/scummvm.ini";
+}
+
+Common::WriteStream *OSystem_RISCOS::createLogFile() {
+	// Start out by resetting _logFilePath, so that in case
+	// of a failure, we know that no log file is open.
+	_logFilePath.clear();
+
+	Common::String logFile = "/<Choices$Write>/ScummVM/Logs";
+
+	if (!Posix::assureDirectoryExists(logFile)) {
+		return 0;
+	}
+
+	logFile += "/scummvm.log";
+
+	Common::FSNode file(logFile);
+	Common::WriteStream *stream = file.createWriteStream();
+	if (stream)
+		_logFilePath = logFile;
+	return stream;
+}
+
+#endif
+
diff --git a/backends/platform/sdl/riscos/riscos.h b/backends/platform/sdl/riscos/riscos.h
new file mode 100644
index 00000000000..fb23a3e6e35
--- /dev/null
+++ b/backends/platform/sdl/riscos/riscos.h
@@ -0,0 +1,52 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef PLATFORM_SDL_RISCOS_H
+#define PLATFORM_SDL_RISCOS_H
+
+#include "backends/platform/sdl/sdl.h"
+
+class OSystem_RISCOS : public OSystem_SDL {
+public:
+	virtual void init();
+	virtual void initBackend();
+
+	virtual bool hasFeature(Feature f);
+
+	virtual bool openUrl(const Common::String &url);
+
+protected:
+	/**
+	 * The path of the currently open log file, if any.
+	 *
+	 * @note This is currently a string and not an FSNode for simplicity;
+	 * e.g. we don't need to include fs.h here, and currently the
+	 * only use of this value is to use it to open the log file in an
+	 * editor; for that, we need it only as a string anyway.
+	 */
+	Common::String _logFilePath;
+
+	virtual Common::String getDefaultConfigFileName();
+	virtual Common::WriteStream *createLogFile();
+};
+
+#endif
diff --git a/backends/platform/sdl/riscos/riscos.mk b/backends/platform/sdl/riscos/riscos.mk
new file mode 100644
index 00000000000..4b631016b71
--- /dev/null
+++ b/backends/platform/sdl/riscos/riscos.mk
@@ -0,0 +1,20 @@
+# Special target to create an RISC OS snapshot installation
+riscosdist: $(EXECUTABLE)
+	mkdir -p !ScummVM
+	elf2aif $(EXECUTABLE) !ScummVM/$(EXECUTABLE),ff8
+	cp ${srcdir}/dists/riscos/!Boot,feb !ScummVM/!Boot,feb
+	cp ${srcdir}/dists/riscos/!Run,feb !ScummVM/!Run,feb
+	cp ${srcdir}/dists/riscos/!Sprites,ff9 !ScummVM/!Sprites,ff9
+	cp ${srcdir}/dists/riscos/!Sprites11,ff9 !ScummVM/!Sprites11,ff9
+	mkdir -p !ScummVM/data
+	cp $(DIST_FILES_THEMES) !ScummVM/data/
+ifdef DIST_FILES_ENGINEDATA
+	cp $(DIST_FILES_ENGINEDATA) !ScummVM/data/
+endif
+ifdef DYNAMIC_MODULES
+	mkdir -p !ScummVM/plugins
+	cp $(PLUGINS) !ScummVM/plugins/
+endif
+	mkdir -p !ScummVM/docs
+	cp ${srcdir}/dists/riscos/!Help,feb !ScummVM/!Help,feb
+	cp $(DIST_FILES_DOCS) !ScummVM/docs
\ No newline at end of file
diff --git a/configure b/configure
index 3f35902f785..bc85d5b3db9 100755
--- a/configure
+++ b/configure
@@ -488,7 +488,7 @@ find_libcurlconfig() {
 #
 get_system_exe_extension() {
 	case $1 in
-	arm-riscos)
+	arm-*riscos)
 		_exeext=",ff8"
 		;;
 	3ds | dreamcast | ds | gamecube | n64 | ps2 | psp | wii)
@@ -1427,9 +1427,12 @@ androidsdl-x86_64)
 	_host_cpu=x86_64
 	_host_alias=x86_64-linux-android
 	;;
-arm-riscos)
+arm-*riscos)
 	_host_os=riscos
 	_host_cpu=arm
+	datarootdir='/\<ScummVM\$$Dir\>'
+	datadir='${datarootdir}/data'
+	docdir='${datarootdir}/docs'
 	;;
 raspberrypi)
 	_host_os=linux
@@ -2712,6 +2715,20 @@ case $_host_os in
 		append_var CXXFLAGS "-D_PSP_FW_VERSION=150"
 		add_line_to_config_mk 'PSP = 1'
 		;;
+	riscos)
+		append_var DEFINES "-DRISCOS"
+		add_line_to_config_mk 'RISCOS = 1'
+		append_var LDFLAGS "-L$GCCSDK_INSTALL_ENV/lib"
+		append_var CXXFLAGS "-I$GCCSDK_INSTALL_ENV/include"
+		_sdlpath=$GCCSDK_INSTALL_ENV/bin
+		_freetypepath=$GCCSDK_INSTALL_ENV/bin
+		_libcurlpath=$GCCSDK_INSTALL_ENV/bin
+		append_var CXXFLAGS "-march=armv4"
+		append_var CXXFLAGS "-mtune=xscale"
+		append_var LDFLAGS "-static"
+		_optimization_level=-O3
+		_port_mk="backends/platform/sdl/riscos/riscos.mk"
+		;;
 	solaris*)
 		append_var DEFINES "-DSOLARIS"
 		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
@@ -2819,8 +2836,16 @@ if test -n "$_host"; then
 			;;
 		arm-linux|arm*-linux-gnueabi|arm-*-linux)
 			;;
-		arm-riscos|linupy)
-			append_var DEFINES "-DLINUPY"
+		arm-*riscos)
+			_seq_midi=no
+			_timidity=no
+			_opengl_mode=none
+			_build_hq_scalers=no
+			# toolchain binaries prefixed by host
+			_ranlib=$_host-ranlib
+			_strip=$_host-strip
+			_ar="$_host-ar cru"
+			_as="$_host-as"
 			;;
 		bfin*)
 			;;
@@ -3013,6 +3038,9 @@ if test -n "$_host"; then
 			_seq_midi=no
 			_timidity=no
 			;;
+		linupy)
+			append_var DEFINES "-DLINUPY"
+			;;
 		m68k-atari-mint)
 			append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
 			_ranlib=m68k-atari-mint-ranlib
@@ -3577,7 +3605,7 @@ case $_host_os in
 	amigaos* | cygwin* | dreamcast | ds | gamecube | mingw* | n64 | ps2 | ps3 | psp2 | psp | wii | wince)
 		_posix=no
 		;;
-	3ds | android | androidsdl | beos* | bsd* | darwin* | freebsd* | gnu* | gph-linux | haiku* | hpux* | iphone | ios7 | irix*| k*bsd*-gnu* | linux* | maemo | mint* | netbsd* | openbsd* | solaris* | sunos* | uclinux* | webos)
+	3ds | android | androidsdl | beos* | bsd* | darwin* | freebsd* | gnu* | gph-linux | haiku* | hpux* | iphone | ios7 | irix*| k*bsd*-gnu* | linux* | maemo | mint* | netbsd* | openbsd* | riscos | solaris* | sunos* | uclinux* | webos)
 		_posix=yes
 		;;
 	os2-emx*)
diff --git a/dists/riscos/!Boot,feb b/dists/riscos/!Boot,feb
new file mode 100644
index 00000000000..b286b449fa2
--- /dev/null
+++ b/dists/riscos/!Boot,feb
@@ -0,0 +1,8 @@
+Set ScummVM$Dir <Obey$Dir>
+IconSprites <ScummVM$Dir>.!Sprites
+
+Set ScummVM$Title "ScummVM"
+Set ScummVM$Description "Play certain classic graphical point-and-click adventure games"
+Set ScummVM$Publisher "ScummVM Developers"
+Set ScummVM$Web "http://www.scummvm.org/"
+Set ScummVM$Version "1.10.0git"
diff --git a/dists/riscos/!Help,feb b/dists/riscos/!Help,feb
new file mode 100644
index 00000000000..fca98bc69dc
--- /dev/null
+++ b/dists/riscos/!Help,feb
@@ -0,0 +1 @@
+Filer_Opendir <Obey$Dir>.docs
diff --git a/dists/riscos/!Run,feb b/dists/riscos/!Run,feb
new file mode 100644
index 00000000000..6c38b4b658f
--- /dev/null
+++ b/dists/riscos/!Run,feb
@@ -0,0 +1,13 @@
+Run <Obey$Dir>.!Boot
+
+RMEnsure SharedUnixLibrary 1.14 RMLoad System:Modules.SharedULib
+RMEnsure SharedUnixLibrary 1.14 Error ScummVM requires SharedUnixLibrary 1.14 or later. This can be downloaded from https://www.riscos.info/packages/LibraryDetails.html#SharedUnixLibrary
+
+RMEnsure DigitalRenderer 0.56 RMLoad System:Modules.DRenderer
+RMEnsure DigitalRenderer 0.56 Error ScummVM requires DigitalRenderer 0.56 or later. This can be downloaded from https://www.riscos.info/packages/LibraryDetails.html#DRenderer
+
+Set ScummVM$stdout ><Choices$Write>.ScummVM.stdout 2><Choices$Write>.ScummVM.stderr
+If "<Wimp$State>"="commands" Then Unset ScummVM$stdout Else CDir <Choices$Write>.ScummVM
+
+WimpSlot -min 8192K
+Do Run <ScummVM$Dir>.scummvm %*0 <ScummVM$stdout>
diff --git a/dists/riscos/!Sprites,ff9 b/dists/riscos/!Sprites,ff9
new file mode 100644
index 0000000000000000000000000000000000000000..20d12bbca42e546d184c9c7e389dc235ecbc63ac
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