* coff-h8300.c: Include libiberty.h.
[binutils.git] / gas / write.h
blob962ccd0fb10bc939c6ff53fbdafcafe406cec846
1 /* write.h
2 Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA. */
22 #ifndef __write_h__
23 #define __write_h__
25 #ifndef TC_I960
26 #ifdef hpux
27 #define EXEC_MACHINE_TYPE HP9000S200_ID
28 #endif
29 #endif /* TC_I960 */
31 #ifndef BFD_ASSEMBLER
33 #ifndef LOCAL_LABEL
34 #define LOCAL_LABEL(name) (name [0] == 'L' )
35 #endif
37 #define S_LOCAL_NAME(s) (LOCAL_LABEL (S_GET_NAME (s)))
39 #endif /* ! BFD_ASSEMBLER */
41 /* This is the name of a fake symbol which will never appear in the
42 assembler output. S_IS_LOCAL detects it because of the \001. */
43 #define FAKE_LABEL_NAME "L0\001"
45 #include "bit_fix.h"
48 * FixSs may be built up in any order.
51 struct fix
53 /* These small fields are grouped together for compactness of
54 this structure, and efficiency of access on some architectures. */
56 /* pc-relative offset adjust (only used by m68k) */
57 char fx_pcrel_adjust;
59 /* How many bytes are involved? */
60 unsigned char fx_size;
62 /* Is this a pc-relative relocation? */
63 unsigned fx_pcrel : 1;
65 /* Is this a relocation to a procedure linkage table entry? If so,
66 some of the reductions we try to apply are invalid. A better way
67 might be to represent PLT entries with different kinds of
68 symbols, and use normal relocations (with undefined symbols);
69 look into it for version 2.6. */
70 unsigned fx_plt : 1;
72 /* Is this value an immediate displacement? */
73 /* Only used on i960 and ns32k; merge it into TC_FIX_TYPE sometime. */
74 unsigned fx_im_disp : 2;
76 /* A bit for the CPU specific code.
77 This probably can be folded into tc_fix_data, below. */
78 unsigned fx_tcbit : 1;
80 /* Has this relocation already been applied? */
81 unsigned fx_done : 1;
83 /* Suppress overflow complaints on large addends. This is used
84 in the PowerPC ELF config to allow large addends on the
85 BFD_RELOC_{LO16,HI16,HI16_S} relocations.
87 @@ Can this be determined from BFD? */
88 unsigned fx_no_overflow : 1;
90 /* The value is signed when checking for overflow. */
91 unsigned fx_signed : 1;
93 /* Which frag does this fix apply to? */
94 fragS *fx_frag;
96 /* Where is the first byte to fix up? */
97 long fx_where;
99 /* NULL or Symbol whose value we add in. */
100 symbolS *fx_addsy;
102 /* NULL or Symbol whose value we subtract. */
103 symbolS *fx_subsy;
105 /* Absolute number we add in. */
106 valueT fx_offset;
108 /* The value of dot when the fixup expression was parsed. */
109 addressT fx_dot_value;
111 /* Next fixS in linked list, or NULL. */
112 struct fix *fx_next;
114 /* If NULL, no bitfix's to do. */
115 /* Only i960-coff and ns32k use this, and i960-coff stores an
116 integer. This can probably be folded into tc_fix_data, below.
117 @@ Alpha also uses it, but only to disable certain relocation
118 processing. */
119 bit_fixS *fx_bit_fixP;
121 #ifdef BFD_ASSEMBLER
122 bfd_reloc_code_real_type fx_r_type;
123 #else
124 #ifdef NEED_FX_R_TYPE
125 /* Hack for machines where the type of reloc can't be
126 worked out by looking at how big it is. */
127 int fx_r_type;
128 #endif
129 #endif
131 /* This field is sort of misnamed. It appears to be a sort of random
132 scratch field, for use by the back ends. The main gas code doesn't
133 do anything but initialize it to zero. The use of it does need to
134 be coordinated between the cpu and format files, though. E.g., some
135 coff targets pass the `addend' field from the cpu file via this
136 field. I don't know why the `fx_offset' field above can't be used
137 for that; investigate later and document. KR */
138 valueT fx_addnumber;
140 /* The location of the instruction which created the reloc, used
141 in error messages. */
142 char *fx_file;
143 unsigned fx_line;
145 #ifdef USING_CGEN
146 struct {
147 /* CGEN_INSN entry for this instruction. */
148 const struct cgen_insn *insn;
149 /* Target specific data, usually reloc number. */
150 int opinfo;
151 } fx_cgen;
152 #endif
154 #ifdef TC_FIX_TYPE
155 /* Location where a backend can attach additional data
156 needed to perform fixups. */
157 TC_FIX_TYPE tc_fix_data;
158 #endif
161 typedef struct fix fixS;
163 extern int finalize_syms;
164 extern symbolS *abs_section_sym;
165 extern addressT dot_value;
167 #ifndef BFD_ASSEMBLER
168 extern char *next_object_file_charP;
170 #ifndef MANY_SEGMENTS
171 COMMON fixS *text_fix_root, *text_fix_tail; /* Chains fixSs. */
172 COMMON fixS *data_fix_root, *data_fix_tail; /* Chains fixSs. */
173 COMMON fixS *bss_fix_root, *bss_fix_tail; /* Chains fixSs. */
174 extern struct frag *text_last_frag; /* Last frag in segment. */
175 extern struct frag *data_last_frag; /* Last frag in segment. */
176 #endif
177 COMMON fixS **seg_fix_rootP, **seg_fix_tailP; /* -> one of above. */
178 #endif
180 extern long string_byte_count;
181 extern int section_alignment[];
183 extern bit_fixS *bit_fix_new
184 PARAMS ((int size, int offset, long base_type, long base_adj, long min,
185 long max, long add));
186 extern void append PARAMS ((char **charPP, char *fromP, unsigned long length));
187 extern void record_alignment PARAMS ((segT seg, int align));
188 extern int get_recorded_alignment PARAMS ((segT seg));
189 extern void subsegs_finish PARAMS ((void));
190 extern void write_object_file PARAMS ((void));
191 extern long relax_frag PARAMS ((segT, fragS *, long));
192 extern int relax_segment
193 PARAMS ((struct frag * seg_frag_root, segT seg_type));
195 extern void number_to_chars_littleendian PARAMS ((char *, valueT, int));
196 extern void number_to_chars_bigendian PARAMS ((char *, valueT, int));
198 #ifdef BFD_ASSEMBLER
199 extern fixS *fix_new
200 PARAMS ((fragS * frag, int where, int size, symbolS * add_symbol,
201 offsetT offset, int pcrel, bfd_reloc_code_real_type r_type));
202 extern fixS *fix_new_exp
203 PARAMS ((fragS * frag, int where, int size, expressionS *exp, int pcrel,
204 bfd_reloc_code_real_type r_type));
205 #else
206 extern fixS *fix_new
207 PARAMS ((fragS * frag, int where, int size, symbolS * add_symbol,
208 offsetT offset, int pcrel, int r_type));
209 extern fixS *fix_new_exp
210 PARAMS ((fragS * frag, int where, int size, expressionS *exp, int pcrel,
211 int r_type));
212 #endif
214 extern void write_print_statistics PARAMS ((FILE *));
216 #endif /* __write_h__ */