os: New OS abstraction module.

1 files changed, 123 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/os/os_memory_win32k.h b/src/gallium/auxiliary/os/os_memory_win32k.h
new file mode 100644
index 0000000000..d56d690872
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_memory_win32k.h
@@ -0,0 +1,123 @@
+/**************************************************************************
+ * 
+ * Copyright 2008-2010 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+
+
+/*
+ * OS memory management abstractions for Windows kernel.
+ */
+
+
+#ifndef _OS_MEMORY_H_
+#error "Must not be included directly. Include os_memory.h instead"
+#endif
+
+
+#include "pipe/p_compiler.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+
+void * __stdcall
+EngAllocMem(unsigned long Flags,
+            unsigned long MemSize,
+            unsigned long Tag);
+
+void __stdcall
+EngFreeMem(void *Mem);
+
+#define os_malloc(_size) EngAllocMem(0, _size, 'D3AG')
+#define os_calloc(_count, _size) EngAllocMem(1, (_count)*(_size), 'D3AG')
+#define _os_free(_ptr) EngFreeMem(_ptr)
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+
+void *
+ExAllocatePool(unsigned long PoolType,
+               size_t NumberOfBytes);
+
+void 
+ExFreePool(void *P);
+
+#define os_malloc(_size) ExAllocatePool(0, _size)
+#define _os_free(_ptr) ExFreePool(_ptr)
+
+static INLINE void *
+os_calloc(unsigned count, unsigned size)
+{
+   void *ptr = os_malloc(count * size);
+   if (ptr) {
+      memset(ptr, 0, count * size);
+   }
+   return ptr;
+}
+
+#else
+
+#error "Unsupported subsystem"
+
+#endif
+
+
+static INLINE void
+os_free( void *ptr )
+{
+   if (ptr) {
+      _os_free(ptr);
+   }
+}
+
+
+static INLINE void *
+os_realloc(void *old_ptr, unsigned old_size, unsigned new_size)
+{
+   void *new_ptr = NULL;
+
+   if (new_size != 0) {
+      unsigned copy_size = old_size < new_size ? old_size : new_size;
+      new_ptr = os_malloc( new_size );
+      if (new_ptr && old_ptr && copy_size) {
+         memcpy(new_ptr, old_ptr, copy_size);
+      }
+   }
+
+   os_free(old_ptr);
+
+   return new_ptr;
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#include "os_memory_aligned.h"