75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
#ifndef __MACROMPATCHER_H__
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#define __MACROMPATCHER_H__ 1
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Known types of ROM images. */
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enum RomType {
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eUnknown = 0,
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/* 24bit ROMs are Mac II, IIx, SE/30 ROMs that are normally 256KB */
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e24bit = 1,
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/* 32bit ROMs are IIsi, IIci, and higher that are normally
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* 512KB or larger.
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*/
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e32bit = 2
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};
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typedef enum RomType RomType;
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struct romctx {
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/* pointer to the in-memory instance of the ROM, ready to be modified.
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* This pointer can change, if something needs to increase the size
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* of the ROM, it can be realloc'd to be larger.
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*/
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uint8_t *data;
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/* Size of the memory pointed to by data above. If the ROM image grows
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* via realloc, this needs to be updated.
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*/
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uint32_t datasize;
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/* The original filesize that was read in from disk. If the ROM image
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* size hasn't changed in the modification proces, this will == datasize
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*/
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uint32_t filesize;
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/* Represents what type the ROM is. Some ROMs are structured
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* differently, so modification routines will need to key off this
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* to determine how and if they can perform their modification.
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*/
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RomType type;
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};
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typedef struct romctx RomCtx;
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/* Standard error types the ROM modification routines can return */
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enum RomErr {
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eSuccess = 0,
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/* The modification is not supported for the given ROM */
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eNotSupp = 1,
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/* Couldn't find where to apply the patch in the given ROM */
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eNotFound = 2,
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/* Error with one of the parameters */
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eParmErr = 3
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};
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typedef enum RomErr RomErr;
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RomErr GetChecksum(RomCtx *rom, uint32_t *checksum);
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RomErr UpdateChecksum(RomCtx *rom);
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const char *GetROMErrString(RomErr err);
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RomErr GetDRVROffset(RomCtx *rom, uint16_t drvrid, uint32_t *offset);
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RomErr InstallRomdiskDrvr(RomCtx *rom);
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RomErr InstallRomdiskImage(RomCtx *rom, uint8_t *image, uint32_t imagesize);
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#ifdef __cplusplus
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};
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#endif
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#endif /* __MACROMPATCHER_H__ */
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