gas/write.h

   1 /* write.h -> write.c */
   2
   3 /*   MODIFIED BY CHRIS BENENATI, FOR INTEL CORPORATION, 4/89    */
   4 /* write.h -> write.c
   5    Copyright (C) 1987 Free Software Foundation, Inc.
   6
   7 This file is part of GAS, the GNU Assembler.
   8
   9 GAS is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 1, or (at your option)
  12 any later version.
  13
  14 GAS is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GAS; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  22
  23 #ifndef TC_I960
  24 #ifdef hpux
  25 #define EXEC_MACHINE_TYPE HP9000S200_ID
  26 #endif
  27 #endif /* TC_I960 */
  28
  29 #ifndef LOCAL_LABEL
  30 #ifdef DOT_LABEL_PREFIX
  31 #define LOCAL_LABEL(name) (name[0] =='.' \
  32                          && ( name [1] == 'L' || name [1] == '.' ))
  33 #else  /* not defined DOT_LABEL_PREFIX */
  34 #define LOCAL_LABEL(name) (name [0] == 'L' )
  35 #endif /* not defined DOT_LABEL_PREFIX */
  36 #endif /* LOCAL_LABEL */
  37
  38 #define S_LOCAL_NAME(s) (LOCAL_LABEL(S_GET_NAME(s)))
  39
  40 /* The bit_fix was implemented to support machines that need variables
  41    to be inserted in bitfields other than 1, 2 and 4 bytes.
  42    Furthermore it gives us a possibillity to mask in bits in the symbol
  43    when it's fixed in the objectcode and check the symbols limits.
  44
  45    The or-mask is used to set the huffman bits in displacements for the
  46    ns32k port.
  47    The acbi, addqi, movqi, cmpqi instruction requires an assembler that
  48    can handle bitfields. Ie handle an expression, evaluate it and insert
  49    the result in an some bitfield. ( ex: 5 bits in a short field of a opcode)
  50  */
  51
  52 struct bit_fix {
  53   int                   fx_bit_size;    /* Length of bitfield           */
  54   int                   fx_bit_offset;  /* Bit offset to bitfield       */
  55   long                  fx_bit_base;    /* Where do we apply the bitfix.
  56                                         If this is zero, default is assumed. */
  57   long                  fx_bit_base_adj;/* Adjustment of base */
  58   long                  fx_bit_max;     /* Signextended max for bitfield */
  59   long                  fx_bit_min;     /* Signextended min for bitfield */
  60   long                  fx_bit_add;     /* Or mask, used for huffman prefix */
  61 };
  62 typedef struct bit_fix bit_fixS;
  63 /*
  64  * FixSs may be built up in any order.
  65  */
  66
  67 struct fix
  68 {
  69   fragS *               fx_frag;        /* Which frag? */
  70   long          fx_where;       /* Where is the 1st byte to fix up? */
  71   symbolS *             fx_addsy; /* NULL or Symbol whose value we add in. */
  72   symbolS *             fx_subsy; /* NULL or Symbol whose value we subtract. */
  73   long          fx_offset;      /* Absolute number we add in. */
  74   struct fix *          fx_next;        /* NULL or -> next fixS. */
  75   short int             fx_size;        /* How many bytes are involved? */
  76   char                  fx_pcrel;       /* TRUE: pc-relative. */
  77   char                  fx_pcrel_adjust;/* pc-relative offset adjust */
  78   char                  fx_im_disp;     /* TRUE: value is a displacement */
  79   bit_fixS *            fx_bit_fixP;    /* IF NULL no bitfix's to do */
  80   char                  fx_bsr;         /* sequent-hack */
  81   enum reloc_type       fx_r_type;      /* Sparc hacks */
  82   char                  fx_callj;       /* TRUE if target is a 'callj'
  83                                            (used by i960) */
  84   long                  fx_addnumber;
  85 };
  86
  87 typedef struct fix      fixS;
  88
  89 COMMON char *next_object_file_charP;
  90
  91 COMMON fixS *text_fix_root, *text_fix_tail;     /* Chains fixSs. */
  92 COMMON fixS *data_fix_root, *data_fix_tail;     /* Chains fixSs. */
  93 COMMON fixS **seg_fix_rootP, **seg_fix_tailP;   /* -> one of above. */
  94 extern long string_byte_count;
  95 extern int section_alignment[];
  96
  97 #ifdef __STDC__
  98
  99 bit_fixS *bit_fix_new(char size, char offset, long base_type, long base_adj, long min, long max, long add);
 100 void append(char **charPP, char *fromP, unsigned long length);
 101 void record_alignment(segT seg, int align);
 102 void write_object_file(void);
 103
 104 fixS *fix_new(fragS *frag,
 105               int where,
 106               int size,
 107               symbolS *add_symbol,
 108               symbolS *sub_symbol,
 109               long offset,
 110               int pcrel,
 111               enum reloc_type r_type);
 112
 113 #else
 114
 115 bit_fixS *bit_fix_new();
 116 fixS *fix_new();
 117 void append();
 118 void record_alignment();
 119 void write_object_file();
 120
 121 #endif /* __STDC__ */
 122
 123 /*
 124  * Local Variables:
 125  * comment-column: 0
 126  * fill-column: 131
 127  * End:
 128  */
 129
 130 /* end of write.h */