drivers/net/wireless/bcmdhd_1_77/include/packed_section_start.h

   1 /*
   2  * Declare directives for structure packing. No padding will be provided
   3  * between the members of packed structures, and therefore, there is no
   4  * guarantee that structure members will be aligned.
   5  *
   6  * Declaring packed structures is compiler specific. In order to handle all
   7  * cases, packed structures should be delared as:
   8  *
   9  * #include <packed_section_start.h>
  10  *
  11  * typedef BWL_PRE_PACKED_STRUCT struct foobar_t {
  12  *    some_struct_members;
  13  * } BWL_POST_PACKED_STRUCT foobar_t;
  14  *
  15  * #include <packed_section_end.h>
  16  *
  17  *
  18  * Copyright (C) 1999-2018, Broadcom Corporation
  19  *
  20  *      Unless you and Broadcom execute a separate written software license
  21  * agreement governing use of this software, this software is licensed to you
  22  * under the terms of the GNU General Public License version 2 (the "GPL"),
  23  * available at http://www.broadcom.com/licenses/GPLv2.php, with the
  24  * following added to such license:
  25  *
  26  *      As a special exception, the copyright holders of this software give you
  27  * permission to link this software with independent modules, and to copy and
  28  * distribute the resulting executable under terms of your choice, provided that
  29  * you also meet, for each linked independent module, the terms and conditions of
  30  * the license of that module.  An independent module is a module which is not
  31  * derived from this software.  The special exception does not apply to any
  32  * modifications of the software.
  33  *
  34  *      Notwithstanding the above, under no circumstances may you combine this
  35  * software in any way with any other Broadcom software provided under a license
  36  * other than the GPL, without Broadcom's express prior written consent.
  37  *
  38  *
  39  * <<Broadcom-WL-IPTag/Open:>>
  40  *
  41  * $Id: packed_section_start.h 514727 2014-11-12 03:02:48Z $
  42  */
  43
  44
  45 /* Error check - BWL_PACKED_SECTION is defined in packed_section_start.h
  46  * and undefined in packed_section_end.h. If it is already defined at this
  47  * point, then there is a missing include of packed_section_end.h.
  48  */
  49 #ifdef BWL_PACKED_SECTION
  50         #error "BWL_PACKED_SECTION is already defined!"
  51 #else
  52         #define BWL_PACKED_SECTION
  53 #endif
  54
  55
  56
  57
  58 /* Declare compiler-specific directives for structure packing. */
  59 #if defined(__GNUC__) || defined(__lint)
  60         #define BWL_PRE_PACKED_STRUCT
  61         #define BWL_POST_PACKED_STRUCT  __attribute__ ((packed))
  62 #elif defined(__CC_ARM)
  63         #define BWL_PRE_PACKED_STRUCT   __packed
  64         #define BWL_POST_PACKED_STRUCT
  65 #else
  66         #error "Unknown compiler!"
  67 #endif