git.sur5r.net Git - cc65/blob - src/cc65/codeinfo.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                codeinfo.h                                 */
   4 /*                                                                           */
   5 /*              Additional information about code instructions               */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2001      Ullrich von Bassewitz                                       */
  10 /*               Wacholderweg 14                                             */
  11 /*               D-70597 Stuttgart                                           */
  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 CODEINFO_H
  37 #define CODEINFO_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Data                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 /* Flags that tell what a specific instruction does with a register.
  48  * Please note that *changing* a register must not necessarily mean that the
  49  * value currently in the register is used. A prominent example is a load
  50  * instruction: It changes the register contents and does not use the old
  51  * value. On the flip side, a shift or something similar would use the
  52  * current value and change it.
  53  */
  54 #define CI_USE_NONE     0x0000U         /* Use nothing */
  55 #define CI_USE_A        0x0001U         /* Use the A register */
  56 #define CI_USE_X        0x0002U         /* Use the X register */
  57 #define CI_USE_Y        0x0004U         /* Use the Y register */
  58 #define CI_USE_ALL      0x0007U         /* Use all registers */
  59 #define CI_MASK_USE     0x000FU         /* Extract usage info */
  60
  61 #define CI_CHG_NONE     0x0000U         /* Change nothing */
  62 #define CI_CHG_A        0x0010U         /* Change the A register */
  63 #define CI_CHG_X        0x0020U         /* Change the X register */
  64 #define CI_CHG_Y        0x0040U         /* Change the Y register */
  65 #define CI_CHG_ALL      0x0070U         /* Change all registers */
  66 #define CI_MASK_CHG     0x00F0U         /* Extract change info */
  67
  68 #define CI_BRA          0x0100U         /* Instruction is a branch */
  69 #define CI_MASK_BRA     0x0100U         /* Extract branch info */
  70
  71 #define CI_NONE         0x0000U         /* Nothing used/changed */
  72
  73
  74
  75 /*****************************************************************************/
  76 /*                                   Code                                    */
  77 /*****************************************************************************/
  78
  79
  80
  81 /* End of codeinfo.h */
  82 #endif
  83
  84
  85