os2: add port files for SDL2-2.0.4 from Andrey Vasilkin

only geniconv/iconv.h (was from LGPL libiconv) is replaced with a generic minimal iconv.h based on public knowledge.
2025-10-05 17:36:25 +00:00 · 2020-10-14 23:01:00 +03:00
parent 93e1449764
commit 74cfb81dbb
34 changed files with 6564 additions and 0 deletions
--- a/src/thread/os2/SDL_systls.c
+++ b/src/thread/os2/SDL_systls.c
@@ -0,0 +1,89 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_THREAD_OS2
+
+#include "../../core/os2/SDL_os2.h"
+
+#include "SDL_thread.h"
+#include "../SDL_thread_c.h"
+
+#define INCL_DOSPROCESS
+#define INCL_DOSERRORS
+#include <os2.h>
+
+SDL_TLSData     **ppSDLTLSData = NULL;
+
+static ULONG           cTLSAlloc = 0;
+
+// SDL_OS2TLSAlloc() called from SDL_InitSubSystem()
+void SDL_OS2TLSAlloc()
+{
+  ULONG      ulRC;
+
+  if ( ( cTLSAlloc == 0 ) || ( ppSDLTLSData == NULL ) )
+  {
+    // First call - allocate the thread local memory (1 DWORD).
+    ulRC = DosAllocThreadLocalMemory( 1, (PULONG *)&ppSDLTLSData );
+    if ( ulRC != NO_ERROR )
+      debug( "DosAllocThreadLocalMemory() failed, rc = %u", ulRC );
+  }
+  cTLSAlloc++;
+}
+
+// SDL_OS2TLSFree() called from SDL_QuitSubSystem()
+void SDL_OS2TLSFree()
+{
+  ULONG      ulRC;
+
+  if ( cTLSAlloc != 0 )
+    cTLSAlloc--;
+
+  if ( ( cTLSAlloc == 0 ) && ( ppSDLTLSData != NULL ) )
+  {
+    // Last call - free the thread local memory.
+    ulRC = DosFreeThreadLocalMemory( (PULONG)ppSDLTLSData );
+    if ( ulRC != NO_ERROR )
+      debug( "DosFreeThreadLocalMemory() failed, rc = %u", ulRC );
+    else
+      ppSDLTLSData = NULL;
+  }
+}
+
+SDL_TLSData *SDL_SYS_GetTLSData()
+{
+  return ppSDLTLSData == NULL ? NULL : *ppSDLTLSData;
+}
+
+int SDL_SYS_SetTLSData(SDL_TLSData *data)
+{
+  if ( ppSDLTLSData == NULL )
+    return -1;
+
+  *ppSDLTLSData = data;
+  return 0;
+}
+
+#endif /* SDL_THREAD_OS2 */
+
+/* vi: set ts=4 sw=4 expandtab: */