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359e119a6b
git-svn-id: svn://svn.cc65.org/cc65/trunk@5091 b7a2c559-68d2-44c3-8de9-860c34a00d81
155 lines
5.1 KiB
C
155 lines
5.1 KiB
C
/*****************************************************************************/
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/* */
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/* segrange.c */
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/* */
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/* A segment range */
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/* */
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/* */
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/* */
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/* (C) 2003-2011, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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/* common */
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#include "xmalloc.h"
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/* ca65 */
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#include "objfile.h"
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#include "segment.h"
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#include "segrange.h"
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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SegRange* NewSegRange (struct Segment* Seg)
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/* Create a new segment range. The segment is set to Seg, Start and End are
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* set to the current PC of the segment.
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*/
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{
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/* Allocate memory */
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SegRange* R = xmalloc (sizeof (SegRange));
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/* Initialize the struct */
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R->Seg = Seg;
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R->Start = Seg->PC;
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R->End = Seg->PC;
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/* Return the new struct */
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return R;
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}
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void AddSegRanges (Collection* Ranges)
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/* Add a segment range for all existing segments to the given collection of
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* ranges. The currently active segment will be inserted first with all others
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* following.
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*/
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{
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Segment* Seg;
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/* Add the currently active segment */
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CollAppend (Ranges, NewSegRange (ActiveSeg));
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/* Walk through the segment list and add all other segments */
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Seg = SegmentList;
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while (Seg) {
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/* Be sure to skip the active segment, since it was already added */
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if (Seg != ActiveSeg) {
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CollAppend (Ranges, NewSegRange (Seg));
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}
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Seg = Seg->List;
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}
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}
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void CloseSegRanges (Collection* Ranges)
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/* Close all open segment ranges by setting PC to the current PC for the
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* segment.
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*/
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{
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unsigned I;
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/* Walk over the segment list */
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for (I = 0; I < CollCount (Ranges); ++I) {
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/* Get the next segment range */
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SegRange* R = CollAtUnchecked (Ranges, I);
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/* Set the end offset */
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R->End = R->Seg->PC;
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}
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}
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void WriteSegRanges (const Collection* Ranges)
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/* Write a list of segment ranges to the output file */
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{
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unsigned I;
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unsigned Count;
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/* Determine how many of the segments contain actual data */
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Count = 0;
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for (I = 0; I < CollCount (Ranges); ++I) {
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/* Get next range */
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const SegRange* R = CollConstAt (Ranges, I);
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/* Is this segment range empty? */
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if (R->Start != R->End) {
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++Count;
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}
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}
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/* Write the number of ranges with data */
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ObjWriteVar (Count);
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/* Write the ranges */
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for (I = 0; I < CollCount (Ranges); ++I) {
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/* Get next range */
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const SegRange* R = CollConstAt (Ranges, I);
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/* Write data for non empty ranges */
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if (R->Start != R->End) {
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ObjWriteVar (R->Seg->Num);
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ObjWriteVar (R->Start);
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ObjWriteVar (R->End);
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}
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}
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}
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