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/ AmigActive 10 / AACD 10.iso / AACD / Games / MAME / src / msdos / osd_cpu.h < prev    next >
C/C++ Source or Header  |  1999-08-27  |  3KB  |  79 lines
  1. /*******************************************************************************
  2. *                                                                               *
  3. *    Define size independent data types and operations.                           *
  4. *                                                                               *
  5. *   The following types must be supported by all platforms:                       *
  6. *                                                                               *
  7. *    UINT8  - Unsigned 8-bit Integer        INT8  - Signed 8-bit integer           *
  8. *    UINT16 - Unsigned 16-bit Integer    INT16 - Signed 16-bit integer          *
  9. *    UINT32 - Unsigned 32-bit Integer    INT32 - Signed 32-bit integer          *
  10. *    UINT64 - Unsigned 64-bit Integer    INT64 - Signed 64-bit integer          *
  11. *                                                                               *
  12. *                                                                               *
  13. *   The macro names for the artithmatic operations are composed as follows:    *
  14. *                                                                               *
  15. *   XXX_R_A_B, where XXX - 3 letter operation code (ADD, SUB, etc.)               *
  16. *                     R   - The type    of the result                               *
  17. *                     A   - The type of operand 1                               *
  18. *                     B   - The type of operand 2 (if binary operation)           *
  19. *                                                                               *
  20. *                     Each type is one of: U8,8,U16,16,U32,32,U64,64               *
  21. *                                                                               *
  22. *******************************************************************************/
  23.  
  24.  
  25. #ifndef OSD_CPU_H
  26. #define OSD_CPU_H
  27.  
  28.  
  29. typedef unsigned char                        UINT8;
  30. typedef unsigned short                        UINT16;
  31. typedef unsigned int                        UINT32;
  32. __extension__ typedef unsigned long long    UINT64;
  33. typedef signed char                         INT8;
  34. typedef signed short                        INT16;
  35. typedef signed int                            INT32;
  36. __extension__ typedef signed long long        INT64;
  37.  
  38. /* Combine two 32-bit integers into a 64-bit integer */
  39. #define COMBINE_64_32_32(A,B)     ((((UINT64)(A))<<32) | (B))
  40. #define COMBINE_U64_U32_U32(A,B)  COMBINE_64_32_32(A,B)
  41.  
  42. /* Return upper 32 bits of a 64-bit integer */
  43. #define HI32_32_64(A)          (((UINT64)(A)) >> 32)
  44. #define HI32_U32_U64(A)          HI32_32_64(A)
  45.  
  46. /* Return lower 32 bits of a 64-bit integer */
  47. #define LO32_32_64(A)          ((A) & 0xffffffff)
  48. #define LO32_U32_U64(A)          LO32_32_64(A)
  49.  
  50. #define DIV_64_64_32(A,B)      ((A)/(B))
  51. #define DIV_U64_U64_U32(A,B)  ((A)/(UINT32)(B))
  52.  
  53. #define MOD_32_64_32(A,B)      ((A)%(B))
  54. #define MOD_U32_U64_U32(A,B)  ((A)%(UINT32)(B))
  55.  
  56. #define MUL_64_32_32(A,B)      ((A)*(INT64)(B))
  57. #define MUL_U64_U32_U32(A,B)  ((A)*(UINT64)(UINT32)(B))
  58.  
  59.  
  60. /******************************************************************************
  61.  * Union of UINT8, UINT16 and UINT32 in native endianess of the target
  62.  * This is used to access bytes and words in a machine independent manner.
  63.  * The upper bytes h2 and h3 normally contain zero (16 bit CPU cores)
  64.  * thus PAIR.d can be used to pass arguments to the memory system
  65.  * which expects 'int' really.
  66.  ******************************************************************************/
  67. typedef union {
  68. #ifdef LSB_FIRST
  69.     struct { UINT8 l,h,h2,h3; } b;
  70.     struct { UINT16 l,h; } w;
  71. #else
  72.     struct { UINT8 h3,h2,h,l; } b;
  73.     struct { UINT16 h,l; } w;
  74. #endif
  75.     UINT32 d;
  76. }    PAIR;
  77.  
  78. #endif    /* defined OSD_CPU_H */
  79.