mirror of https://github.com/cc65/cc65.git
176 lines
6.5 KiB
C
176 lines
6.5 KiB
C
/*****************************************************************************/
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/* */
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/* segments.h */
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/* */
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/* Segment management */
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/* */
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/* */
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/* */
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/* (C) 2000-2009, 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 SEGMENTS_H
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#define SEGMENTS_H
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#include <stdio.h>
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/* common */
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#include "attrib.h"
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/* cc65 */
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#include "opcodes.h"
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/*****************************************************************************/
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/* Forwards */
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/*****************************************************************************/
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struct CodeEntry;
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struct CodeLabel;
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struct CodeSeg;
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struct DataSeg;
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struct TextSeg;
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struct SymEntry;
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Segment types */
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typedef enum segment_t {
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SEG_CODE,
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SEG_RODATA,
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SEG_DATA,
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SEG_BSS,
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SEG_COUNT
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} segment_t;
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/* A list of all segments used when generating code */
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typedef struct SegContext SegContext;
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struct SegContext {
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struct TextSeg* Text; /* Text segment */
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struct CodeSeg* Code; /* Code segment */
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struct DataSeg* Data; /* Data segment */
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struct DataSeg* ROData; /* Readonly data segment */
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struct DataSeg* BSS; /* Segment for uninitialized data */
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segment_t CurDSeg; /* Current data segment */
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unsigned NextLabel; /* Number to generate unique code labels */
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unsigned NextDataLabel; /* Number to generate unique data labels */
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};
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/* Pointer to the current segment context. Output goes here. */
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extern SegContext* CS;
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/* Pointer to the global segment context */
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extern SegContext* GS;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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void InitSegAddrSizes (void);
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/* Initialize the segment address sizes */
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void DoneSegAddrSizes (void);
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/* Free the segment address sizes */
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void SetSegAddrSize (const char* Name, unsigned char AddrSize);
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/* Set the address size for a segment */
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unsigned char GetSegAddrSize (const char* Name);
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/* Get the address size of the given segment.
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** Return ADDR_SIZE_INVALID if not found.
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*/
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void InitSegNames (void);
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/* Initialize the segment names */
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void SetSegName (segment_t Seg, const char* Name);
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/* Set a new name for a segment */
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void PushSegName (segment_t Seg, const char* Name);
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/* Push the current segment name and set a new name for a segment */
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void PopSegName (segment_t Seg);
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/* Restore a segment name from the segment name stack */
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const char* GetSegName (segment_t Seg);
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/* Get the name of the given segment */
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SegContext* PushSegContext (struct SymEntry* Func);
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/* Make the new segment context current but remember the old one */
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void PopSegContext (void);
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/* Pop the old segment context (make it current) */
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void CreateGlobalSegments (void);
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/* Create the global segments and remember them in GS */
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void UseDataSeg (segment_t DSeg);
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/* For the current segment context, use the data segment DSeg */
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struct DataSeg* GetDataSeg (void);
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/* Return the current data segment */
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void AddTextLine (const char* Format, ...) attribute ((format (printf, 1, 2)));
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/* Add a line to the current text segment */
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void AddCodeLine (const char* Format, ...) attribute ((format (printf, 1, 2)));
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/* Add a line of code to the current code segment */
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void AddCode (opc_t OPC, am_t AM, const char* Arg, struct CodeLabel* JumpTo);
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/* Add a code entry to the current code segment */
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void AddDataLine (const char* Format, ...) attribute ((format (printf, 1, 2)));
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/* Add a line of data to the current data segment */
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int HaveGlobalCode (void);
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/* Return true if the global code segment contains entries (which is an error) */
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void RemoveGlobalCode (void);
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/* Remove all code from the global code segment. Used for error recovery. */
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void OutputSegments (const SegContext* S);
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/* Output the given segments to the output file */
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/* End of segments.h */
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#endif
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