| 1 | /*
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| 2 | * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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| 3 | * See the copyright notice in the ACK home directory, in the file "Copyright".
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| 4 | */
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| 5 | /* $Header: /cvsup/minix/src/commands/aal/out.h,v 1.1.1.1 2005/04/21 14:53:57 beng Exp $ */
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| 6 |
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| 7 | #ifndef __OUT_H_INCLUDED
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| 8 | #define __OUT_H_INCLUDED
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| 9 | /*
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| 10 | * output format for ACK assemblers
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| 11 | */
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| 12 | #ifndef ushort
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| 13 | #define ushort unsigned short
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| 14 | #endif /* ushort */
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| 15 |
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| 16 | struct outhead {
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| 17 | ushort oh_magic; /* magic number */
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| 18 | ushort oh_stamp; /* version stamp */
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| 19 | ushort oh_flags; /* several format flags */
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| 20 | ushort oh_nsect; /* number of outsect structures */
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| 21 | ushort oh_nrelo; /* number of outrelo structures */
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| 22 | ushort oh_nname; /* number of outname structures */
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| 23 | long oh_nemit; /* sum of all os_flen */
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| 24 | long oh_nchar; /* size of string area */
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| 25 | };
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| 26 |
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| 27 | #define O_MAGIC 0x0201 /* magic number of output file */
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| 28 | #define O_STAMP 0 /* version stamp */
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| 29 | #define MAXSECT 64 /* Maximum number of sections */
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| 30 |
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| 31 | #define HF_LINK 0x0004 /* unresolved references left */
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| 32 | #define HF_8086 0x0008 /* os_base specially encoded */
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| 33 |
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| 34 | struct outsect {
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| 35 | long os_base; /* startaddress in machine */
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| 36 | long os_size; /* section size in machine */
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| 37 | long os_foff; /* startaddress in file */
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| 38 | long os_flen; /* section size in file */
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| 39 | long os_lign; /* section alignment */
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| 40 | };
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| 41 |
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| 42 | struct outrelo {
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| 43 | char or_type; /* type of reference */
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| 44 | char or_sect; /* referencing section */
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| 45 | ushort or_nami; /* referenced symbol index */
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| 46 | long or_addr; /* referencing address */
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| 47 | };
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| 48 |
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| 49 | struct outname {
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| 50 | union {
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| 51 | char *on_ptr; /* symbol name (in core) */
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| 52 | long on_off; /* symbol name (in file) */
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| 53 | } on_u;
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| 54 | #define on_mptr on_u.on_ptr
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| 55 | #define on_foff on_u.on_off
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| 56 | ushort on_type; /* symbol type */
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| 57 | ushort on_desc; /* debug info */
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| 58 | long on_valu; /* symbol value */
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| 59 | };
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| 60 |
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| 61 | /*
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| 62 | * relocation type bits
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| 63 | */
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| 64 | #define RELSZ 0x07 /* relocation length */
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| 65 | #define RELO1 1 /* 1 byte */
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| 66 | #define RELO2 2 /* 2 bytes */
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| 67 | #define RELO4 4 /* 4 bytes */
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| 68 | #define RELPC 0x08 /* pc relative */
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| 69 | #define RELBR 0x10 /* High order byte lowest address. */
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| 70 | #define RELWR 0x20 /* High order word lowest address. */
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| 71 |
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| 72 | /*
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| 73 | * section type bits and fields
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| 74 | */
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| 75 | #define S_TYP 0x007F /* undefined, absolute or relative */
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| 76 | #define S_EXT 0x0080 /* external flag */
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| 77 | #define S_ETC 0x7F00 /* for symbolic debug, bypassing 'as' */
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| 78 |
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| 79 | /*
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| 80 | * S_TYP field values
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| 81 | */
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| 82 | #define S_UND 0x0000 /* undefined item */
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| 83 | #define S_ABS 0x0001 /* absolute item */
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| 84 | #define S_MIN 0x0002 /* first user section */
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| 85 | #define S_MAX (S_TYP-1) /* last user section */
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| 86 | #define S_CRS S_TYP /* on_valu is symbol index which contains value */
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| 87 |
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| 88 | /*
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| 89 | * S_ETC field values
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| 90 | */
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| 91 | #define S_SCT 0x0100 /* section names */
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| 92 | #define S_LIN 0x0200 /* hll source line item */
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| 93 | #define S_FIL 0x0300 /* hll source file item */
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| 94 | #define S_MOD 0x0400 /* ass source file item */
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| 95 | #define S_COM 0x1000 /* Common name. */
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| 96 | #define S_STB 0xe000 /* entries with any of these bits set are
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| 97 | reserved for debuggers
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| 98 | */
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| 99 |
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| 100 | /*
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| 101 | * structure format strings
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| 102 | */
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| 103 | #define SF_HEAD "22222244"
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| 104 | #define SF_SECT "44444"
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| 105 | #define SF_RELO "1124"
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| 106 | #define SF_NAME "4224"
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| 107 |
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| 108 | /*
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| 109 | * structure sizes (bytes in file; add digits in SF_*)
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| 110 | */
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| 111 | #define SZ_HEAD 20
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| 112 | #define SZ_SECT 20
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| 113 | #define SZ_RELO 8
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| 114 | #define SZ_NAME 12
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| 115 |
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| 116 | /*
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| 117 | * file access macros
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| 118 | */
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| 119 | #define BADMAGIC(x) ((x).oh_magic!=O_MAGIC)
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| 120 | #define OFF_SECT(x) SZ_HEAD
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| 121 | #define OFF_EMIT(x) (OFF_SECT(x) + ((long)(x).oh_nsect * SZ_SECT))
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| 122 | #define OFF_RELO(x) (OFF_EMIT(x) + (x).oh_nemit)
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| 123 | #define OFF_NAME(x) (OFF_RELO(x) + ((long)(x).oh_nrelo * SZ_RELO))
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| 124 | #define OFF_CHAR(x) (OFF_NAME(x) + ((long)(x).oh_nname * SZ_NAME))
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| 125 |
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| 126 | #endif /* __OUT_H_INCLUDED */
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