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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.18.50/] [gas/] [write.h] - Blame information for rev 38

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1 38 julius
/* write.h
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   Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001,
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   2002, 2003, 2005, 2006, 2007
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   Free Software Foundation, Inc.
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   This file is part of GAS, the GNU Assembler.
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   GAS is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3, or (at your option)
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   any later version.
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   GAS is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with GAS; see the file COPYING.  If not, write to the Free
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   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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   02110-1301, USA.  */
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#ifndef __write_h__
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#define __write_h__
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/* This is the name of a fake symbol which will never appear in the
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   assembler output.  S_IS_LOCAL detects it because of the \001.  */
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#ifndef FAKE_LABEL_NAME
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#define FAKE_LABEL_NAME "L0\001"
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#endif
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#include "bit_fix.h"
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/*
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 * FixSs may be built up in any order.
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 */
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struct fix
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{
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  /* These small fields are grouped together for compactness of
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     this structure, and efficiency of access on some architectures.  */
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  /* Is this a pc-relative relocation?  */
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  unsigned fx_pcrel : 1;
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  /* Is this value an immediate displacement?  */
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  /* Only used on ns32k; merge it into TC_FIX_TYPE sometime.  */
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  unsigned fx_im_disp : 2;
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  /* Some bits for the CPU specific code.  */
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  unsigned fx_tcbit : 1;
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  unsigned fx_tcbit2 : 1;
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  /* Has this relocation already been applied?  */
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  unsigned fx_done : 1;
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  /* Suppress overflow complaints on large addends.  This is used
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     in the PowerPC ELF config to allow large addends on the
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     BFD_RELOC_{LO16,HI16,HI16_S} relocations.
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     @@ Can this be determined from BFD?  */
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  unsigned fx_no_overflow : 1;
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  /* The value is signed when checking for overflow.  */
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  unsigned fx_signed : 1;
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  /* pc-relative offset adjust (only used by m68k and m68hc11) */
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  char fx_pcrel_adjust;
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  /* How many bytes are involved? */
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  unsigned char fx_size;
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  /* Which frag does this fix apply to?  */
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  fragS *fx_frag;
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  /* Where is the first byte to fix up?  */
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  long fx_where;
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  /* NULL or Symbol whose value we add in.  */
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  symbolS *fx_addsy;
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  /* NULL or Symbol whose value we subtract.  */
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  symbolS *fx_subsy;
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  /* Absolute number we add in.  */
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  valueT fx_offset;
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  /* The value of dot when the fixup expression was parsed.  */
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  addressT fx_dot_value;
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  /* Next fixS in linked list, or NULL.  */
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  struct fix *fx_next;
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  /* If NULL, no bitfix's to do.  */
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  /* Only i960-coff and ns32k use this, and i960-coff stores an
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     integer.  This can probably be folded into tc_fix_data, below.
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     @@ Alpha also uses it, but only to disable certain relocation
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     processing.  */
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  bit_fixS *fx_bit_fixP;
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  bfd_reloc_code_real_type fx_r_type;
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  /* This field is sort of misnamed.  It appears to be a sort of random
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     scratch field, for use by the back ends.  The main gas code doesn't
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     do anything but initialize it to zero.  The use of it does need to
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     be coordinated between the cpu and format files, though.  E.g., some
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     coff targets pass the `addend' field from the cpu file via this
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     field.  I don't know why the `fx_offset' field above can't be used
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     for that; investigate later and document. KR  */
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  valueT fx_addnumber;
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  /* The location of the instruction which created the reloc, used
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     in error messages.  */
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  char *fx_file;
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  unsigned fx_line;
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#ifdef USING_CGEN
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  struct {
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    /* CGEN_INSN entry for this instruction.  */
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    const struct cgen_insn *insn;
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    /* Target specific data, usually reloc number.  */
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    int opinfo;
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    /* Which ifield this fixup applies to. */
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    struct cgen_maybe_multi_ifield * field;
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    /* is this field is the MSB field in a set? */
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    int msb_field_p;
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  } fx_cgen;
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#endif
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#ifdef TC_FIX_TYPE
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  /* Location where a backend can attach additional data
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     needed to perform fixups.  */
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  TC_FIX_TYPE tc_fix_data;
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#endif
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};
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typedef struct fix fixS;
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struct reloc_list
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{
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  struct reloc_list *next;
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  union
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  {
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    struct
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    {
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      symbolS *offset_sym;
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      reloc_howto_type *howto;
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      symbolS *sym;
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      bfd_vma addend;
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    } a;
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    struct
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    {
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      asection *sec;
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      asymbol *s;
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      arelent r;
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    } b;
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  } u;
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  char *file;
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  unsigned int line;
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};
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extern int finalize_syms;
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extern symbolS *abs_section_sym;
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extern addressT dot_value;
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extern struct reloc_list* reloc_list;
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extern void append (char **charPP, char *fromP, unsigned long length);
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extern void record_alignment (segT seg, int align);
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extern int get_recorded_alignment (segT seg);
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extern void subsegs_finish (void);
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extern void write_object_file (void);
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extern long relax_frag (segT, fragS *, long);
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extern int relax_segment (struct frag *, segT, int);
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extern void number_to_chars_littleendian (char *, valueT, int);
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extern void number_to_chars_bigendian (char *, valueT, int);
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extern fixS *fix_new
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  (fragS * frag, int where, int size, symbolS * add_symbol,
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   offsetT offset, int pcrel, bfd_reloc_code_real_type r_type);
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extern fixS *fix_new_exp
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  (fragS * frag, int where, int size, expressionS *exp, int pcrel,
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   bfd_reloc_code_real_type r_type);
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extern void write_print_statistics (FILE *);
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#endif /* __write_h__ */

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