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 2, 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         fragS *fx_frag; /* Which frag? */
  69         long fx_where;  /* Where is the 1st byte to fix up? */
  70         symbolS *fx_addsy; /* NULL or Symbol whose value we add in. */
  71         symbolS *fx_subsy; /* NULL or Symbol whose value we subtract. */
  72         long fx_offset; /* Absolute number we add in. */
  73         struct fix *fx_next;    /* NULL or -> next fixS. */
  74         short int fx_size;      /* How many bytes are involved? */
  75         char fx_pcrel;  /* TRUE: pc-relative. */
  76         char fx_pcrel_adjust;/* pc-relative offset adjust */
  77         char fx_im_disp;        /* TRUE: value is a displacement */
  78         bit_fixS *fx_bit_fixP;  /* IF NULL no bitfix's to do */
  79         char fx_bsr;            /* sequent-hack */
  80         enum reloc_type fx_r_type;      /* Sparc hacks */
  81         char fx_callj;  /* TRUE if target is a 'callj'
  82                            (used by i960) */
  83         long fx_addnumber;
  84 };
  85
  86 typedef struct fix fixS;
  87
  88 COMMON char *next_object_file_charP;
  89
  90 #ifndef MANY_SEGMENTS
  91 COMMON fixS *text_fix_root, *text_fix_tail;     /* Chains fixSs. */
  92 COMMON fixS *data_fix_root, *data_fix_tail;     /* Chains fixSs. */
  93 #endif
  94 COMMON fixS **seg_fix_rootP, **seg_fix_tailP;   /* -> one of above. */
  95 extern long string_byte_count;
  96 extern int section_alignment[];
  97
  98 #ifdef __STDC__
  99
 100 bit_fixS *bit_fix_new(char size, char offset, long base_type, long base_adj, long min, long max, long add);
 101 void append(char **charPP, char *fromP, unsigned long length);
 102 void record_alignment(segT seg, int align);
 103 void write_object_file(void);
 104
 105 fixS *fix_new(fragS *frag,
 106               int where,
 107               int size,
 108               symbolS *add_symbol,
 109               symbolS *sub_symbol,
 110               long offset,
 111               int pcrel,
 112               enum reloc_type r_type);
 113
 114 #else
 115
 116 bit_fixS *bit_fix_new();
 117 fixS *fix_new();
 118 void append();
 119 void record_alignment();
 120 void write_object_file();
 121
 122 #endif /* __STDC__ */
 123
 124 /*
 125  * Local Variables:
 126  * comment-column: 0
 127  * fill-column: 131
 128  * End:
 129  */
 130
 131 /* end of write.h */