kc3-lang/SDL

diff --git a/Makefile.os2 b/Makefile.os2
index b23be13..68eece1 100644
--- a/Makefile.os2
+++ b/Makefile.os2
@@ -12,6 +12,7 @@ LNKFILE = $(LIBNAME).lnk
 
 INCPATH = -I"$(%WATCOM)/h/os2" -I"$(%WATCOM)/h"
 INCPATH+= -Iinclude
+INCPATH+= -I"src/core/os2" -I"src/core/os2/geniconv"
 
 LIBM = libm.lib
 LIBS = mmpm2.lib libuls.lib libconv.lib $(LIBM)
@@ -26,6 +27,12 @@ CFLAGS+= $(INCPATH)
 # building SDL itself (for DECLSPEC):
 CFLAGS+= -DBUILD_SDL
 
+# Debug options:
+# - debug messages from OS/2 related code to stdout:
+#CFLAGS+= -DOS2DEBUG
+# - debug messages from OS/2 code via SDL_LogDebug():
+#CFLAGS+= -DOS2DEBUG=2
+
 MSRCS= e_atan2.c e_exp.c e_fmod.c e_log10.c e_log.c e_pow.c e_rem_pio2.c e_sqrt.c &
        k_cos.c k_rem_pio2.c k_sin.c k_tan.c &
        s_atan.c s_copysign.c s_cos.c s_fabs.c s_floor.c s_scalbn.c s_sin.c s_tan.c
@@ -58,6 +65,11 @@ SRCS+= SDL_dummysensor.c
 SRCS+= SDL_locale.c SDL_syslocale.c
 SRCS+= SDL_url.c SDL_sysurl.c
 
+SRCS+= SDL_os2.c geniconv.c os2cp.c os2iconv.c sys2utf8.c
+SRCS+= SDL_os2audio.c
+SRCS+= SDL_os2video.c SDL_os2util.c SDL_os2dive.c SDL_os2vman.c &
+       SDL_os2mouse.c SDL_os2messagebox.c
+
 SRCS+= SDL_dynapi.c
 
 OBJS = $(SRCS:.c=.obj)
@@ -68,7 +80,7 @@ MOBJS= $(MSRCS:.c=.obj)
 
 .c: ./src;./src/dynapi;./src/audio;./src/cpuinfo;./src/events;./src/file;./src/haptic;./src/joystick;./src/power;./src/render;./src/render/software;./src/sensor;./src/stdlib;./src/thread;./src/timer;./src/video;./src/video/yuv2rgb;./src/atomic;./src/audio/disk;
 .c: ./src/haptic/dummy;./src/joystick/dummy;./src/audio/dummy;./src/video/dummy;./src/sensor/dummy;
-.c: ./src/loadso/dummy;./src/filesystem/dummy;./src/timer/dummy;./src/thread/generic;
+.c: ./src/core/os2;./src/core/os2/geniconv;./src/audio/os2;./src/loadso/os2;./src/filesystem/os2;./src/thread/os2;./src/timer/os2;./src/video/os2;
 .c: ./src/locale/;./src/locale/unix;./src/misc;./src/misc/dummy;
 
 all: $(DLLFILE) $(LIBFILE) .symbolic
@@ -84,6 +96,9 @@ $(LIBFILE): $(DLLFILE)
 .c.obj:
     wcc386 $(CFLAGS) -fo=$^@ $<
 
+SDL_syscond.obj: "src/thread/generic/SDL_syscond.c"
+    wcc386 $(CFLAGS) -fo=$^@ $<
+
 SDL_cpuinfo.obj: SDL_cpuinfo.c
     wcc386 $(CFLAGS) -wcd=200 -fo=$^@ $<
 
diff --git a/include/SDL_config_os2.h b/include/SDL_config_os2.h
index eedf79c..ea483b6 100644
--- a/include/SDL_config_os2.h
+++ b/include/SDL_config_os2.h
@@ -27,6 +27,7 @@
 
 #define SDL_AUDIO_DRIVER_DUMMY 1
 #define SDL_AUDIO_DRIVER_DISK 1
+#define SDL_AUDIO_DRIVER_OS2 1
 
 #define SDL_POWER_DISABLED  1
 #define SDL_JOYSTICK_DISABLED 1
@@ -34,6 +35,7 @@
 
 #define SDL_SENSOR_DUMMY 1
 #define SDL_VIDEO_DRIVER_DUMMY 1
+#define SDL_VIDEO_DRIVER_OS2 1
 
 /* Enable OpenGL support */
 /* #undef SDL_VIDEO_OPENGL */
@@ -41,10 +43,10 @@
 /* Enable Vulkan support */
 /* #undef SDL_VIDEO_VULKAN */
 
-#define SDL_LOADSO_DISABLED 1
-#define SDL_THREADS_DISABLED 1
-#define SDL_TIMERS_DISABLED 1
-#define SDL_FILESYSTEM_DUMMY 1
+#define SDL_THREAD_OS2 1
+#define SDL_LOADSO_OS2 1
+#define SDL_TIMER_OS2 1
+#define SDL_FILESYSTEM_OS2 1
 
 /* Enable assembly routines */
 #define SDL_ASSEMBLY_ROUTINES 1
diff --git a/include/SDL_syswm.h b/include/SDL_syswm.h
index e877b2a..f0e9675 100644
--- a/include/SDL_syswm.h
+++ b/include/SDL_syswm.h
@@ -106,6 +106,11 @@ typedef void *EGLSurface;
 #if defined(SDL_VIDEO_DRIVER_VIVANTE)
 #include "SDL_egl.h"
 #endif
+
+#if defined(SDL_VIDEO_DRIVER_OS2)
+#define INCL_WIN
+#include <os2.h>
+#endif
 #endif /* SDL_PROTOTYPES_ONLY */
 
 
@@ -187,6 +192,16 @@ struct SDL_SysWMmsg
             /* No Vivante window events yet */
         } vivante;
 #endif
+#if defined(SDL_VIDEO_DRIVER_OS2)
+        struct
+        {
+            BOOL fFrame;                /**< TRUE if hwnd is a frame window */
+            HWND hwnd;                  /**< The window receiving the message */
+            ULONG msg;                  /**< The message identifier */
+            MPARAM mp1;                 /**< The first first message parameter */
+            MPARAM mp2;                 /**< The second first message parameter */
+        } os2;
+#endif
         /* Can't have an empty union */
         int dummy;
     } msg;
@@ -280,6 +295,14 @@ struct SDL_SysWMinfo
         } android;
 #endif
 
+#if defined(SDL_VIDEO_DRIVER_OS2)
+        struct
+        {
+            HWND hwnd;                  /**< The window handle */
+            HWND hwndFrame;             /**< The frame window handle */
+        } os2;
+#endif
+
 #if defined(SDL_VIDEO_DRIVER_VIVANTE)
         struct
         {
diff --git a/src/SDL.c b/src/SDL.c
index 680ed2e..02e131b 100644
--- a/src/SDL.c
+++ b/src/SDL.c
@@ -27,6 +27,12 @@
 #elif !defined(__WINRT__)
 #include <unistd.h> /* For _exit(), etc. */
 #endif
+#if defined(__OS2__)
+#include "core/os2/SDL_os2.h"
+#endif
+#if SDL_THREAD_OS2
+#include "thread/os2/SDL_systls_c.h"
+#endif
 
 #if defined(__EMSCRIPTEN__)
 #include <emscripten.h>
@@ -159,6 +165,10 @@ SDL_InitSubSystem(Uint32 flags)
         flags |= SDL_INIT_EVENTS;
     }
 
+#if SDL_THREAD_OS2
+    SDL_OS2TLSAlloc(); /* thread/os2/SDL_systls.c */
+#endif
+
 #if SDL_VIDEO_DRIVER_WINDOWS
     if ((flags & (SDL_INIT_HAPTIC|SDL_INIT_JOYSTICK))) {
         if (SDL_HelperWindowCreate() < 0) {
@@ -294,6 +304,13 @@ SDL_Init(Uint32 flags)
 void
 SDL_QuitSubSystem(Uint32 flags)
 {
+#if SDL_THREAD_OS2
+    SDL_OS2TLSFree(); /* thread/os2/SDL_systls.c */
+#endif
+#if defined(__OS2__)
+    SDL_OS2Quit();
+#endif
+
     /* Shut down requested initialized subsystems */
 #if !SDL_SENSOR_DISABLED
     if ((flags & SDL_INIT_SENSOR)) {
diff --git a/src/audio/SDL_audio.c b/src/audio/SDL_audio.c
index 3137493..bacee6c 100644
--- a/src/audio/SDL_audio.c
+++ b/src/audio/SDL_audio.c
@@ -104,6 +104,9 @@ static const AudioBootStrap *const bootstrap[] = {
 #if SDL_AUDIO_DRIVER_JACK
     &JACK_bootstrap,
 #endif
+#if SDL_AUDIO_DRIVER_OS2
+    &OS2AUDIO_bootstrap,
+#endif
 #if SDL_AUDIO_DRIVER_DISK
     &DISKAUDIO_bootstrap,
 #endif
diff --git a/src/audio/SDL_sysaudio.h b/src/audio/SDL_sysaudio.h
index 7359adc..350a6d0 100644
--- a/src/audio/SDL_sysaudio.h
+++ b/src/audio/SDL_sysaudio.h
@@ -207,6 +207,7 @@ extern AudioBootStrap openslES_bootstrap;
 extern AudioBootStrap ANDROIDAUDIO_bootstrap;
 extern AudioBootStrap PSPAUDIO_bootstrap;
 extern AudioBootStrap EMSCRIPTENAUDIO_bootstrap;
+extern AudioBootStrap OS2AUDIO_bootstrap;
 
 #endif /* SDL_sysaudio_h_ */
 
diff --git a/src/events/SDL_mouse.c b/src/events/SDL_mouse.c
index 03bae6b..50065e4 100644
--- a/src/events/SDL_mouse.c
+++ b/src/events/SDL_mouse.c
@@ -32,6 +32,10 @@
 #ifdef __WIN32__
 #include "../core/windows/SDL_windows.h"    // For GetDoubleClickTime()
 #endif
+#if defined(__OS2__)
+#define INCL_WIN
+#include <os2.h>
+#endif
 
 /* #define DEBUG_MOUSE */
 
@@ -54,6 +58,8 @@ SDL_MouseDoubleClickTimeChanged(void *userdata, const char *name, const char *ol
     } else {
 #ifdef __WIN32__
         mouse->double_click_time = GetDoubleClickTime();
+#elif defined(__OS2__)
+        mouse->double_click_time = WinQuerySysValue(HWND_DESKTOP, SV_DBLCLKTIME);
 #else
         mouse->double_click_time = 500;
 #endif
diff --git a/src/thread/SDL_thread_c.h b/src/thread/SDL_thread_c.h
index ac0071e..c82b59e 100644
--- a/src/thread/SDL_thread_c.h
+++ b/src/thread/SDL_thread_c.h
@@ -36,6 +36,8 @@
 #include "psp/SDL_systhread_c.h"
 #elif SDL_THREAD_STDCPP
 #include "stdcpp/SDL_systhread_c.h"
+#elif SDL_THREAD_OS2
+#include "os2/SDL_systhread_c.h"
 #else
 #error Need thread implementation for this platform
 #include "generic/SDL_systhread_c.h"
diff --git a/src/video/SDL_sysvideo.h b/src/video/SDL_sysvideo.h
index 81322b3..0567035 100644
--- a/src/video/SDL_sysvideo.h
+++ b/src/video/SDL_sysvideo.h
@@ -436,6 +436,8 @@ extern VideoBootStrap VIVANTE_bootstrap;
 extern VideoBootStrap Emscripten_bootstrap;
 extern VideoBootStrap QNX_bootstrap;
 extern VideoBootStrap OFFSCREEN_bootstrap;
+extern VideoBootStrap OS2DIVE_bootstrap;
+extern VideoBootStrap OS2VMAN_bootstrap;
 
 extern SDL_VideoDevice *SDL_GetVideoDevice(void);
 extern int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode);
diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 3f89c43..36d42ce 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -112,6 +112,10 @@ static VideoBootStrap *bootstrap[] = {
 #if SDL_VIDEO_DRIVER_OFFSCREEN
     &OFFSCREEN_bootstrap,
 #endif
+#if SDL_VIDEO_DRIVER_OS2
+    &OS2DIVE_bootstrap,
+    &OS2VMAN_bootstrap,
+#endif
 #if SDL_VIDEO_DRIVER_DUMMY
     &DUMMY_bootstrap,
 #endif
@@ -3926,9 +3930,11 @@ SDL_IsScreenKeyboardShown(SDL_Window *window)
 #if SDL_VIDEO_DRIVER_HAIKU
 #include "haiku/SDL_bmessagebox.h"
 #endif
+#if SDL_VIDEO_DRIVER_OS2
+#include "os2/SDL_os2messagebox.h"
+#endif
 
-
-#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT || SDL_VIDEO_DRIVER_COCOA || SDL_VIDEO_DRIVER_UIKIT || SDL_VIDEO_DRIVER_X11 || SDL_VIDEO_DRIVER_HAIKU
+#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT || SDL_VIDEO_DRIVER_COCOA || SDL_VIDEO_DRIVER_UIKIT || SDL_VIDEO_DRIVER_X11 || SDL_VIDEO_DRIVER_HAIKU || SDL_VIDEO_DRIVER_OS2
 static SDL_bool SDL_MessageboxValidForDriver(const SDL_MessageBoxData *messageboxdata, SDL_SYSWM_TYPE drivertype)
 {
     SDL_SysWMinfo info;
@@ -4028,6 +4034,13 @@ SDL_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
         retval = 0;
     }
 #endif
+#if SDL_VIDEO_DRIVER_OS2
+    if (retval == -1 &&
+        SDL_MessageboxValidForDriver(messageboxdata, SDL_SYSWM_OS2) &&
+        OS2_ShowMessageBox(messageboxdata, buttonid) == 0) {
+        retval = 0;
+    }
+#endif
     if (retval == -1) {
         SDL_SetError("No message system available");
     }
diff --git a/test/Makefile.os2 b/test/Makefile.os2
index f9ec898..7676369 100644
--- a/test/Makefile.os2
+++ b/test/Makefile.os2
@@ -13,7 +13,7 @@ TARGETS = testatomic.exe testdisplayinfo.exe testbounds.exe testdraw2.exe &
           testviewport.exe testwm2.exe torturethread.exe checkkeys.exe &
           controllermap.exe testhaptic.exe testqsort.exe testresample.exe &
           testaudioinfo.exe testaudiocapture.exe loopwave.exe loopwavequeue.exe &
-          testyuv.exe testgl2.exe testvulkan.exe testautomation.exe
+          testyuv.exe testgl2.exe testvulkan.exe testnative.exe testautomation.exe
 
 # SDL2test.lib sources (../src/test)
 
@@ -69,6 +69,10 @@ testautomation.exe: $(TAOBJS)
   @%make $(TESTLIB)
   wlink SYS os2v2 libpath $(LIBPATH) lib {$(LIBS)} op q op el file {$<} name $@
 
+testnative.exe: testnative.obj testnativeos2.obj
+  @%make $(TESTLIB)
+  wlink SYS os2v2 libpath $(LIBPATH) lib {$(LIBS)} op q op el file {$<} name $@
+
 testoverlay2.exe: testoverlay2.obj testyuv_cvt.obj
   @%make $(TESTLIB)
   wlink SYS os2v2 libpath $(LIBPATH) lib {$(LIBS)} op q op el file {$<} name $@
diff --git a/test/testnative.c b/test/testnative.c
index 353262b..675c8f4 100644
--- a/test/testnative.c
+++ b/test/testnative.c
@@ -32,6 +32,9 @@ static NativeWindowFactory *factories[] = {
 #ifdef TEST_NATIVE_COCOA
     &CocoaWindowFactory,
 #endif
+#ifdef TEST_NATIVE_OS2
+    &OS2WindowFactory,
+#endif
     NULL
 };
 static NativeWindowFactory *factory = NULL;
diff --git a/test/testnative.h b/test/testnative.h
index 428d607..d7b40fb 100644
--- a/test/testnative.h
+++ b/test/testnative.h
@@ -44,3 +44,8 @@ extern NativeWindowFactory X11WindowFactory;
 #define TEST_NATIVE_COCOA
 extern NativeWindowFactory CocoaWindowFactory;
 #endif
+
+#ifdef SDL_VIDEO_DRIVER_OS2
+#define TEST_NATIVE_OS2
+extern NativeWindowFactory OS2WindowFactory;
+#endif