include/macros.h

   1 #ifndef _MACROS_H_
   2 #define _MACROS_H_
   3
   4 #include "platform_info.h"
   5
   6 #ifndef __sgi
   7 #define GLOBAL_ASM(...)
   8 #endif
   9
  10 #if !defined(__sgi) && (!defined(NON_MATCHING) || !defined(AVOID_UB))
  11 // asm-process isn't supported outside of IDO, and undefined behavior causes
  12 // crashes.
  13 #error Matching build is only possible on IDO; please build with NON_MATCHING=1.
  14 #endif
  15
  16 #define ARRAY_COUNT(arr) (s32)(sizeof(arr) / sizeof(arr[0]))
  17
  18 #define GLUE(a, b) a ## b
  19 #define GLUE2(a, b) GLUE(a, b)
  20
  21 // Avoid compiler warnings for unused variables
  22 #ifdef __GNUC__
  23 #define UNUSED __attribute__((unused))
  24 #else
  25 #define UNUSED
  26 #endif
  27
  28 // Static assertions
  29 #ifdef __GNUC__
  30 #define STATIC_ASSERT(cond, msg) _Static_assert(cond, msg)
  31 #else
  32 #define STATIC_ASSERT(cond, msg) typedef char GLUE2(static_assertion_failed, __LINE__)[(cond) ? 1 : -1]
  33 #endif
  34
  35 // Align to 8-byte boundary for DMA requirements
  36 #ifdef __GNUC__
  37 #define ALIGNED8 __attribute__((aligned(8)))
  38 #else
  39 #define ALIGNED8
  40 #endif
  41
  42 // Align to 16-byte boundary for audio lib requirements
  43 #ifdef __GNUC__
  44 #define ALIGNED16 __attribute__((aligned(16)))
  45 #else
  46 #define ALIGNED16
  47 #endif
  48
  49 // no conversion for pc port other than cast
  50 #define VIRTUAL_TO_PHYSICAL(addr)   ((uintptr_t)(addr))
  51 #define PHYSICAL_TO_VIRTUAL(addr)   ((uintptr_t)(addr))
  52 #define VIRTUAL_TO_PHYSICAL2(addr)  ((void *)(addr))
  53
  54 // Byteswap macros
  55 #define BSWAP16(x) (((x) & 0xFF) << 8 | (((x) >> 8) & 0xFF))
  56 #define BSWAP32(x) \
  57     ( (((x) >> 24) & 0x000000FF) | (((x) >>  8) & 0x0000FF00) | \
  58       (((x) <<  8) & 0x00FF0000) | (((x) << 24) & 0xFF000000) )
  59
  60 // Convenience macros for endian conversions
  61 #if IS_BIG_ENDIAN
  62 # define BE_TO_HOST16(x) (x)
  63 # define BE_TO_HOST32(x) (x)
  64 # define LE_TO_HOST16(x) BSWAP16(x)
  65 # define LE_TO_HOST32(x) BSWAP32(x)
  66 #else
  67 # define BE_TO_HOST16(x) BSWAP16(x)
  68 # define BE_TO_HOST32(x) BSWAP32(x)
  69 # define LE_TO_HOST16(x) (x)
  70 # define LE_TO_HOST32(x) (x)
  71 #endif
  72
  73 #endif