mirror of https://github.com/vivier/EMILE.git
81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/*
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*
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* (c) 2004 Laurent Vivier <Laurent@Vivier.EU>
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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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#ifndef _BOOTBLOCK_H
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#define _BOOTBLOCK_H
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static __attribute__((used)) char* bootblock_header = "$CVSHeader$";
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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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u_int16_t ID; /* boot blocks signature */
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u_int32_t Entry; /* entry point to bootcode */
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u_int16_t Version; /* boot blocks version number */
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u_int16_t PageFlags; /* used internally */
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u_int8_t SysName[16]; /* System filename */
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u_int8_t ShellName[16]; /* Finder filename */
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u_int8_t Dbg1Name[16]; /* debugger filename */
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u_int8_t Dbg2Name[16]; /* debugger filename */
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u_int8_t ScreenName[16]; /* name of startup screen */
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u_int8_t HelloName[16]; /* name of startup program */
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u_int8_t ScrapName[16]; /* name of system scrap file */
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u_int16_t CntFCBs; /* number of FCBs to allocate */
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u_int16_t CntEvts; /* number of event queue elements */
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u_int32_t Heap128K; /* system heap size on 128K Mac */
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u_int32_t Heap256K; /* used internally */
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u_int32_t 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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#define COMMON_PARAMS \
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u_int32_t qLink; /* next queue entry */ \
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u_int16_t qType; /* queue type */ \
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u_int16_t ioTrap; /* routine trap */ \
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u_int32_t ioCmdAddr; /* routine address */ \
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u_int32_t ioCompletion; /* ptr to completion routine */ \
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u_int16_t ioResult; /* result code */ \
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u_int32_t ioNamePtr; /* pointer to pathname */ \
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int16_t ioVRefNum; /* volume specification */
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typedef struct ParamBlockRec ParamBlockRec_t;
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struct ParamBlockRec {
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COMMON_PARAMS
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int16_t ioRefNum; /* file reference number */
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int8_t ioVersNum; /* version number */
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int8_t ioPermssn; /* read/write permission */
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u_int32_t ioMisc; /* miscellaneaous */
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u_int32_t ioBuffer; /* data buffer */
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u_int32_t ioReqCount; /* requested number of bytes */
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u_int32_t ioActCount; /* actual number of bytes */
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u_int16_t ioPosMode; /* positioning mode and newline char */
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int32_t ioPosOffset; /* positionning offset */
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} __attribute__((packed));
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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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u_int8_t 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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#endif
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