commands/aal/out.h

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