libdrm-2.4.66

git-svn-id: svn://kolibrios.org@6110 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/libdrm/libdrm_macros.h

@@ -0,0 +1,81 @@
+/*
+ * Copyright © 2014 NVIDIA Corporation
+ *
+ * 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, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ */
+
+#ifndef LIBDRM_LIBDRM_H
+#define LIBDRM_LIBDRM_H
+
+#if defined(HAVE_VISIBILITY)
+#  define drm_private __attribute__((visibility("hidden")))
+#else
+#  define drm_private
+#endif
+
+
+/**
+ * Static (compile-time) assertion.
+ * Basically, use COND to dimension an array.  If COND is false/zero the
+ * array size will be -1 and we'll get a compilation error.
+ */
+#define STATIC_ASSERT(COND) \
+   do { \
+      (void) sizeof(char [1 - 2*!(COND)]); \
+   } while (0)
+
+
+
+#if defined(ANDROID) && !defined(__LP64__)
+#include <errno.h> /* for EINVAL */
+
+extern void *__mmap2(void *, size_t, int, int, int, size_t);
+
+static inline void *drm_mmap(void *addr, size_t length, int prot, int flags,
+                             int fd, loff_t offset)
+{
+   /* offset must be aligned to 4096 (not necessarily the page size) */
+   if (offset & 4095) {
+      errno = EINVAL;
+      return MAP_FAILED;
+   }
+
+   return __mmap2(addr, length, prot, flags, fd, (size_t) (offset >> 12));
+}
+
+#  define drm_munmap(addr, length) \
+              munmap(addr, length)
+
+
+#else
+
+/* assume large file support exists */
+#  define drm_mmap(addr, length, prot, flags, fd, offset) \
+              mmap(addr, length, prot, flags, fd, offset)
+
+
+static inline int drm_munmap(void *addr, size_t length)
+{
+   /* Copied from configure code generated by AC_SYS_LARGEFILE */
+
+   return munmap(addr, length);
+}
+#endif
+
+#endif