git.sur5r.net Git - cc65/blob - src/ca65/segrange.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                segrange.c                                 */
   4 /*                                                                           */
   5 /*                              A segment range                              */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2003      Ullrich von Bassewitz                                       */
  10 /*               Römerstraße 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 /* common */
  37 #include "xmalloc.h"
  38
  39 /* ca65 */
  40 #include "segment.h"
  41 #include "segrange.h"
  42
  43
  44
  45 /*****************************************************************************/
  46 /*                                   Code                                    */
  47 /*****************************************************************************/
  48
  49
  50
  51 SegRange* NewSegRange (struct Segment* Seg)
  52 /* Create a new segment range. The segment is set to Seg, Start and End are
  53  * set to the current PC of the segment.
  54  */
  55 {
  56     /* Allocate memory */
  57     SegRange* R = xmalloc (sizeof (SegRange));
  58
  59     /* Initialize the struct */
  60     R->Seg      = Seg;
  61     R->Start    = Seg->PC;
  62     R->End      = Seg->PC;
  63
  64     /* Return the new struct */
  65     return R;
  66 }
  67
  68
  69
  70 void AddSegRanges (Collection* Ranges)
  71 /* Add a segment range for all existing segments to the given collection of
  72  * ranges. The currently active segment will be inserted first with all others
  73  * following.
  74  */
  75 {
  76     Segment* Seg;
  77
  78     /* Add the currently active segment */
  79     CollAppend (Ranges, NewSegRange (ActiveSeg));
  80
  81     /* Walk through the segment list and add all other segments */
  82     Seg = SegmentList;
  83     while (Seg) {
  84         /* Be sure to skip the active segment, since it was already added */
  85         if (Seg != ActiveSeg) {
  86             CollAppend (Ranges, NewSegRange (Seg));
  87         }
  88         Seg = Seg->List;
  89     }
  90 }
  91
  92
  93
  94 void CloseSegRanges (Collection* Ranges)
  95 /* Close all open segment ranges by setting PC to the current PC for the
  96  * segment.
  97  */
  98 {
  99     unsigned I;
 100
 101     /* Walk over the segment list */
 102     for (I = 0; I < CollCount (Ranges); ++I) {
 103
 104         /* Get the next segment range */
 105         SegRange* R = CollAtUnchecked (Ranges, I);
 106
 107         /* Set the end offset */
 108         R->End = R->Seg->PC;
 109     }
 110 }
 111
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 113