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177 lines
6.4 KiB
C
177 lines
6.4 KiB
C
/*****************************************************************************/
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/* */
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/* segment.h */
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/* */
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/* Segments for the ca65 macroassembler */
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/* */
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/* */
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/* */
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/* (C) 1998-2012, 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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#ifndef SEGMENT_H
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#define SEGMENT_H
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/* common */
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#include "coll.h"
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#include "fragdefs.h"
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#include "inline.h"
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/* ca65 */
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#include "fragment.h"
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#include "segdef.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Segment definition */
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typedef struct Segment Segment;
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struct Segment {
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Fragment* Root; /* Root of fragment list */
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Fragment* Last; /* Pointer to last fragment */
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unsigned long FragCount; /* Number of fragments */
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unsigned Num; /* Segment number */
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unsigned Flags; /* Segment flags */
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unsigned long Align; /* Segment alignment */
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int RelocMode; /* Relocatable mode if OrgPerSeg */
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unsigned long PC; /* PC if in relocatable mode */
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unsigned long AbsPC; /* PC if in local absolute mode */
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/* (OrgPerSeg is true) */
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SegDef* Def; /* Segment definition (name and type) */
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};
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/* Definitions for predefined segments */
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extern SegDef NullSegDef;
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extern SegDef ZeropageSegDef;
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extern SegDef DataSegDef;
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extern SegDef BssSegDef;
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extern SegDef RODataSegDef;
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extern SegDef CodeSegDef;
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/* Collection containing all segments */
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extern Collection SegmentList;
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/* Currently active segment */
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extern Segment* ActiveSeg;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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Fragment* GenFragment (unsigned char Type, unsigned short Len);
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/* Generate a new fragment, add it to the current segment and return it. */
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void UseSeg (const SegDef* D);
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/* Use the given segment */
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#if defined(HAVE_INLINE)
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INLINE const SegDef* GetCurrentSegDef (void)
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/* Get a pointer to the segment defininition of the current segment */
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{
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return ActiveSeg->Def;
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}
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#else
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# define GetCurrentSegDef() (ActiveSeg->Def)
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#endif
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#if defined(HAVE_INLINE)
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INLINE unsigned GetCurrentSegNum (void)
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/* Get the number of the current segment */
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{
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return ActiveSeg->Num;
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}
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#else
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# define GetCurrentSegNum() (ActiveSeg->Num)
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#endif
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#if defined(HAVE_INLINE)
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INLINE unsigned char GetCurrentSegAddrSize (void)
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/* Get the address size of the current segment */
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{
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return ActiveSeg->Def->AddrSize;
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}
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#else
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# define GetCurrentSegAddrSize() (ActiveSeg->Def->AddrSize)
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#endif
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void SegAlign (unsigned long Alignment, int FillVal);
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/* Align the PC segment to Alignment. If FillVal is -1, emit fill fragments
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** (the actual fill value will be determined by the linker), otherwise use
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** the given value.
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*/
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unsigned char GetSegAddrSize (unsigned SegNum);
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/* Return the address size of the segment with the given number */
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unsigned long GetPC (void);
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/* Get the program counter of the current segment */
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int GetRelocMode (void);
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/* Return true if we're currently in relocatable mode */
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void EnterAbsoluteMode (unsigned long AbsPC);
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/* Enter absolute (non relocatable mode). Depending on the OrgPerSeg flag,
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** this will either switch the mode globally or for the current segment.
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*/
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void EnterRelocMode (void);
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/* Enter relocatable mode. Depending on the OrgPerSeg flag, this will either
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** switch the mode globally or for the current segment.
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*/
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void SegDone (void);
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/* Check the segments for range and other errors. Do cleanup. */
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void SegDump (void);
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/* Dump the contents of all segments */
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void SegInit (void);
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/* Initialize segments */
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void SetSegmentSizes (void);
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/* Set the default segment sizes according to the memory model */
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void WriteSegments (void);
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/* Write the segment data to the object file */
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/* End of segment.h */
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#endif
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