git.sur5r.net Git - cc65/blob - src/common/gentype.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 gentype.h                                 */
   4 /*                                                                           */
   5 /*                        Generic data type encoding                         */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2011,      Ullrich von Bassewitz                                      */
  10 /*                Roemerstrasse 52                                           */
  11 /*                D-70794 Filderstadt                                        */
  12 /* EMail:         uz@cc65.org                                                */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef GENTYPE_H
  37 #define GENTYPE_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Data                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 /* Termination, so we can use string functions to handle type strings */
  48 #define GT_END                  0x00U
  49
  50 /* Size of a data type */
  51 #define GT_SIZE_1               0x00U
  52 #define GT_SIZE_2               0x01U
  53 #define GT_SIZE_3               0x02U
  54 #define GT_SIZE_4               0x03U
  55 #define GT_SIZE_MASK            0x07U
  56 #define GT_GET_SIZE(x)          (((x) & GT_SIZE_MASK) + 1U)
  57
  58 /* Sign of the data type */
  59 #define GT_UNSIGNED             0x00U
  60 #define GT_SIGNED               0x08U
  61 #define GT_SIGN_MASK            0x08U
  62 #define GT_HAS_SIGN(x)          (((x) & GT_SIZE_MASK) == GT_SIGNED)
  63
  64 /* Byte order */
  65 #define GT_LITTLE_ENDIAN        0x00U
  66 #define GT_BIG_ENDIAN           0x10U
  67 #define GT_BYTEORDER_MASK       0x10U
  68 #define GT_IS_LITTLE_ENDIAN(x)  (((x) & GT_BYTEORDER_MASK) == GT_LITTLE_ENDIAN)
  69 #define GT_IS_BIG_ENDIAN(x)     (((x) & GT_BYTEORDER_MASK) == GT_BIG_ENDIAN)
  70
  71 /* Type of the data. Since we want to have zero as a terminator, we must
  72  * introduce one thing that cannot be zero for normal data. This is the
  73  * type.
  74  */
  75 #define GT_INTEGER              0x20U
  76 #define GT_POINTER              0x40U
  77 #define GT_FLOAT                0x60U
  78 #define GT_ARRAY                0x80U
  79 #define GT_FUNCTION             0xA0U
  80 #define GT_STRUCT               0xC0U
  81 #define GT_UNION                0xE0U
  82 #define GT_MASK                 0xE0U
  83 #define GT_GET_TYPE(x)          ((x) & GT_TYPE_MASK)
  84 #define GT_IS_INTEGER(x)        (GT_GET_TYPE(x) == GT_INTEGER)
  85 #define GT_IS_POINTER(x)        (GT_GET_TYPE(x) == GT_POINTER)
  86 #define GT_IS_FLOAT(x)          (GT_GET_TYPE(x) == GT_FLOAT)
  87 #define GT_IS_ARRAY(x)          (GT_GET_TYPE(x) == GT_ARRAY)
  88 #define GT_IS_FUNCTION(x)       (GT_GET_TYPE(x) == GT_FUNCTION)
  89 #define GT_IS_STRUCT(x)         (GT_GET_TYPE(x) == GT_STRUCT)
  90 #define GT_IS_UNION(x)          (GT_GET_TYPE(x) == GT_UNION)
  91
  92 /* Combined values for the 6502 family */
  93 #define GT_BYTE         (GT_INTEGER | GT_LITTLE_ENDIAN | GT_UNSIGNED | GT_SIZE_1)
  94 #define GT_WORD         (GT_INTEGER | GT_LITTLE_ENDIAN | GT_UNSIGNED | GT_SIZE_2)
  95 #define GT_DWORD        (GT_INTEGER | GT_LITTLE_ENDIAN | GT_UNSIGNED | GT_SIZE_4)
  96 #define GT_DBYTE        (GT_POINTER | GT_BIG_ENDIAN    | GT_UNSIGNED | GT_SIZE_2)
  97 #define GT_PTR          (GT_POINTER | GT_LITTLE_ENDIAN | GT_UNSIGNED | GT_SIZE_2)
  98 #define GT_FAR_PTR      (GT_POINTER | GT_LITTLE_ENDIAN | GT_UNSIGNED | GT_SIZE_3)
  99
 100
 101
 102 /* End of gentype.h */
 103
 104 #endif
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