From 01bb4a6c21c225e55a84ac606a3b213909023ba0 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 9 Apr 2024 11:59:14 +0200 Subject: Adding upstream version 2.4.120. Signed-off-by: Daniel Baumann --- libdrm_macros.h | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 libdrm_macros.h (limited to 'libdrm_macros.h') diff --git a/libdrm_macros.h b/libdrm_macros.h new file mode 100644 index 0000000..0dca827 --- /dev/null +++ b/libdrm_macros.h @@ -0,0 +1,87 @@ +/* + * 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 HAVE_VISIBILITY +# define drm_private __attribute__((visibility("hidden"))) +# define drm_public __attribute__((visibility("default"))) +#else +# define drm_private +# define drm_public +#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) + + +#include + +#if defined(ANDROID) && !defined(__LP64__) +#include /* for EINVAL */ + +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 mmap64(addr, length, prot, flags, fd, offset); +} + +# 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 */ +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + \ + (((off_t) 1 << 31) << 31)) + STATIC_ASSERT(LARGE_OFF_T % 2147483629 == 721 && + LARGE_OFF_T % 2147483647 == 1); +#undef LARGE_OFF_T + + return munmap(addr, length); +} +#endif + +#endif -- cgit v1.2.3