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80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*
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*
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* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
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*
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*/
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/*
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* WARNING: remember that m68k is big endian, like powerPC.
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* i386 is little-endian
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*/
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/* first level structure */
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/* BootBlkHdr Structure: "Inside Macintosh: Files", p. 2-57 */
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typedef struct BootBlkHdr BootBlkHdr_t;
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struct BootBlkHdr {
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unsigned short ID; /* boot blocks signature */
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unsigned long Entry; /* entry point to bootcode */
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unsigned short Version; /* boot blocks version number */
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unsigned short PageFlags; /* used internally */
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unsigned char SysName[16]; /* System filename */
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unsigned char ShellName[16]; /* Finder filename */
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unsigned char Dbg1Name[16]; /* debugger filename */
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unsigned char Dbg2Name[16]; /* debugger filename */
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unsigned char ScreenName[16]; /* name of startup screen */
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unsigned char HelloName[16]; /* name of startup program */
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unsigned char ScrapName[16]; /* name of system scrap file */
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unsigned short CntFCBs; /* number of FCBs to allocate */
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unsigned short CntEvts; /* number of event queue elements */
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unsigned long Heap128K; /* system heap size on 128K Mac */
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unsigned long Heap256K; /* used internally */
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unsigned long SysHeapSize; /* system heap size on all machines */
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} __attribute__((packed));
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#define ASSERT_BBH(a) if ( sizeof(BootBlkHdr_t) != 138 ) { a }
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/* ParamBlockRec Structure: "Inside Macintosh: Files", p. 2-87 */
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typedef struct ParamBlockRec ParamBlockRec_t;
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struct ParamBlockRec {
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unsigned long qLink; /* next queue entry */
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unsigned short qType; /* queue type */
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unsigned short ioTrap; /* routine trap */
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unsigned long ioCmdAddr; /* routine address */
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unsigned long ioCompletion; /* pointer to completion routine */
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unsigned short ioResult; /* result code */
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unsigned long ioNamePtr; /* pointer to pathname */
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signed short ioVRefNum; /* volume specification */
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signed short ioRefNum; /* file reference number */
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signed char ioVersNum; /* version number */
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signed char ioPermssn; /* read/write permission */
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unsigned long ioMisc; /* miscellaneaous */
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unsigned long ioBuffer; /* data buffer */
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unsigned long ioReqCount; /* requested number of bytes */
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unsigned long ioActCount; /* actual number of bytes */
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unsigned short ioPosMode; /* positioning mode and newline char */
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signed long ioPosOffset; /* positionning offset */
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} __attribute__((packed));
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#define ASSERT_PBR(a) if ( sizeof(ParamBlockRec_t) != 50 ) { a }
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/* EMILE Boot block structure */
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typedef struct eBootBlock eBootBlock_t;
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struct eBootBlock {
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BootBlkHdr_t boot_block_header;
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ParamBlockRec_t second_param_block;
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unsigned char boot_code[1024 - sizeof(BootBlkHdr_t)
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- sizeof(ParamBlockRec_t)];
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} __attribute__((packed));
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#define ASSERT_BB(a) if ( sizeof(eBootBlock_t) != 1024 ) { a }
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#define SECTOR_SIZE 512
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#define FIRST_LEVEL_SIZE (SECTOR_SIZE * 2)
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