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- /* write.h
- Copyright (C) 1987, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
-
- This file is part of GAS, the GNU Assembler.
-
- GAS is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GAS is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
- #ifndef TC_I960
- #ifdef hpux
- #define EXEC_MACHINE_TYPE HP9000S200_ID
- #endif
- #endif /* TC_I960 */
-
- #ifndef LOCAL_LABEL
- #define LOCAL_LABEL(name) (name [0] == 'L' )
- #endif /* LOCAL_LABEL */
-
- #ifndef FAKE_LABEL_NAME
- #define FAKE_LABEL_NAME "L0\001"
- #endif
-
- #define S_LOCAL_NAME(s) (LOCAL_LABEL(S_GET_NAME(s)))
-
- #include "bit_fix.h"
-
- /*
- * FixSs may be built up in any order.
- */
-
- struct fix
- {
- /* These small fields are grouped together for compactness of
- this structure, and efficiency of access on some architectures. */
-
- /* pc-relative offset adjust */
- char fx_pcrel_adjust;
-
- /* How many bytes are involved? */
- unsigned char fx_size;
-
- /* Is this a pc-relative relocation? */
- unsigned fx_pcrel : 1;
-
- /* Is this a relocation to a procedure linkage table entry? If so,
- some of the reductions we try to apply are invalid. A better way
- might be to represent PLT entries with different kinds of
- symbols, and use normal relocations (with undefined symbols);
- look into it for version 2.6. */
- unsigned fx_plt : 1;
-
- /* Is this value an immediate displacement? */
- /* Only used on i960 and ns32k; merge it into TC_FIX_TYPE sometime. */
- unsigned fx_im_disp : 2;
-
- /* A bit for the CPU specific code.
- This probably can be folded into tc_fix_data, below. */
- unsigned fx_tcbit : 1;
-
- /* Has this relocation already been applied? */
- unsigned fx_done : 1;
-
- /* Suppress overflow complaints on large addends. This is used
- in the PowerPC ELF config to allow large addends on the
- BFD_RELOC_{LO16,HI16,HI16_S} relocations.
-
- @@ Can this be determined from BFD? */
- unsigned fx_no_overflow : 1;
-
- /* Which frag does this fix apply to? */
- fragS *fx_frag;
-
- /* Where is the first byte to fix up? */
- long fx_where;
-
- /* NULL or Symbol whose value we add in. */
- symbolS *fx_addsy;
-
- /* NULL or Symbol whose value we subtract. */
- symbolS *fx_subsy;
-
- /* Absolute number we add in. */
- valueT fx_offset;
-
- /* Next fixS in linked list, or NULL. */
- struct fix *fx_next;
-
- /* If NULL, no bitfix's to do. */
- /* Only i960-coff and ns32k use this, and i960-coff stores an
- integer. This can probably be folded into tc_fix_data, below.
- @@ Alpha also uses it, but only to disable certain relocation
- processing. */
- bit_fixS *fx_bit_fixP;
-
- #ifdef BFD_ASSEMBLER
- bfd_reloc_code_real_type fx_r_type;
- #else
- #ifdef NEED_FX_R_TYPE
- /* Hack for machines where the type of reloc can't be
- worked out by looking at how big it is. */
- int fx_r_type;
- #endif
- #endif
-
- /* This field is sort of misnamed. It appears to be a sort of random
- scratch field, for use by the back ends. The main gas code doesn't
- do anything but initialize it to zero. The use of it does need to
- be coordinated between the cpu and format files, though. E.g., some
- coff targets pass the `addend' field from the cpu file via this
- field. I don't know why the `fx_offset' field above can't be used
- for that; investigate later and document. KR */
- valueT fx_addnumber;
-
- /* The location of the instruction which created the reloc, used
- in error messages. */
- char *fx_file;
- unsigned fx_line;
-
- #ifdef TC_FIX_TYPE
- /* Location where a backend can attach additional data
- needed to perform fixups. */
- TC_FIX_TYPE tc_fix_data;
- #endif
- };
-
- typedef struct fix fixS;
-
- #ifndef BFD_ASSEMBLER
- extern char *next_object_file_charP;
-
- #ifndef MANY_SEGMENTS
- COMMON fixS *text_fix_root, *text_fix_tail; /* Chains fixSs. */
- COMMON fixS *data_fix_root, *data_fix_tail; /* Chains fixSs. */
- COMMON fixS *bss_fix_root, *bss_fix_tail; /* Chains fixSs. */
- extern struct frag *text_last_frag; /* Last frag in segment. */
- extern struct frag *data_last_frag; /* Last frag in segment. */
- #endif
- COMMON fixS **seg_fix_rootP, **seg_fix_tailP; /* -> one of above. */
- #endif
-
- extern long string_byte_count;
- extern int section_alignment[];
-
- extern bit_fixS *bit_fix_new
- PARAMS ((int size, int offset, long base_type, long base_adj, long min,
- long max, long add));
- extern void append PARAMS ((char **charPP, char *fromP, unsigned long length));
- extern void record_alignment PARAMS ((segT seg, int align));
- extern void write_object_file PARAMS ((void));
- extern void relax_segment
- PARAMS ((struct frag * seg_frag_root, segT seg_type));
-
- extern void number_to_chars_littleendian PARAMS ((char *, valueT, int));
- extern void number_to_chars_bigendian PARAMS ((char *, valueT, int));
-
- #ifdef BFD_ASSEMBLER
- extern fixS *fix_new
- PARAMS ((fragS * frag, int where, int size, symbolS * add_symbol,
- offsetT offset, int pcrel, bfd_reloc_code_real_type r_type));
- extern fixS *fix_new_exp
- PARAMS ((fragS * frag, int where, int size, expressionS *exp, int pcrel,
- bfd_reloc_code_real_type r_type));
- #else
- extern fixS *fix_new
- PARAMS ((fragS * frag, int where, int size, symbolS * add_symbol,
- offsetT offset, int pcrel, int r_type));
- extern fixS *fix_new_exp
- PARAMS ((fragS * frag, int where, int size, expressionS *exp, int pcrel,
- int r_type));
- #endif
-
- extern void write_print_statistics PARAMS ((FILE *));
-
- /* end of write.h */
-