Commit | Line | Data |
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252b5132 | 1 | /* write.h |
f7e42eb4 | 2 | Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001 |
a01b9fa4 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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. */ | |
21 | ||
22 | #ifndef __write_h__ | |
23 | #define __write_h__ | |
24 | ||
25 | #ifndef TC_I960 | |
26 | #ifdef hpux | |
27 | #define EXEC_MACHINE_TYPE HP9000S200_ID | |
28 | #endif | |
29 | #endif /* TC_I960 */ | |
30 | ||
31 | #ifndef BFD_ASSEMBLER | |
32 | ||
33 | #ifndef LOCAL_LABEL | |
34 | #define LOCAL_LABEL(name) (name [0] == 'L' ) | |
35 | #endif | |
36 | ||
37 | #define S_LOCAL_NAME(s) (LOCAL_LABEL (S_GET_NAME (s))) | |
38 | ||
39 | #endif /* ! BFD_ASSEMBLER */ | |
40 | ||
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" | |
44 | ||
45 | #include "bit_fix.h" | |
46 | ||
47 | /* | |
48 | * FixSs may be built up in any order. | |
49 | */ | |
50 | ||
51 | struct fix | |
52 | { | |
53 | /* These small fields are grouped together for compactness of | |
54 | this structure, and efficiency of access on some architectures. */ | |
55 | ||
56 | /* pc-relative offset adjust (only used by m68k) */ | |
57 | char fx_pcrel_adjust; | |
58 | ||
59 | /* How many bytes are involved? */ | |
60 | unsigned char fx_size; | |
61 | ||
62 | /* Is this a pc-relative relocation? */ | |
63 | unsigned fx_pcrel : 1; | |
64 | ||
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; | |
71 | ||
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; | |
75 | ||
76 | /* A bit for the CPU specific code. | |
77 | This probably can be folded into tc_fix_data, below. */ | |
78 | unsigned fx_tcbit : 1; | |
79 | ||
80 | /* Has this relocation already been applied? */ | |
81 | unsigned fx_done : 1; | |
82 | ||
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. | |
86 | ||
87 | @@ Can this be determined from BFD? */ | |
88 | unsigned fx_no_overflow : 1; | |
89 | ||
90 | /* The value is signed when checking for overflow. */ | |
91 | unsigned fx_signed : 1; | |
92 | ||
93 | /* Which frag does this fix apply to? */ | |
94 | fragS *fx_frag; | |
95 | ||
96 | /* Where is the first byte to fix up? */ | |
97 | long fx_where; | |
98 | ||
a01b9fa4 | 99 | /* NULL or Symbol whose value we add in. */ |
252b5132 RH |
100 | symbolS *fx_addsy; |
101 | ||
a01b9fa4 | 102 | /* NULL or Symbol whose value we subtract. */ |
252b5132 RH |
103 | symbolS *fx_subsy; |
104 | ||
a01b9fa4 | 105 | /* Absolute number we add in. */ |
252b5132 RH |
106 | valueT fx_offset; |
107 | ||
26346241 AM |
108 | /* The value of dot when the fixup expression was parsed. */ |
109 | addressT fx_dot_value; | |
110 | ||
252b5132 RH |
111 | /* Next fixS in linked list, or NULL. */ |
112 | struct fix *fx_next; | |
113 | ||
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; | |
120 | ||
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 | |
130 | ||
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; | |
139 | ||
140 | /* The location of the instruction which created the reloc, used | |
141 | in error messages. */ | |
142 | char *fx_file; | |
143 | unsigned fx_line; | |
144 | ||
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 | |
153 | ||
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 | |
159 | }; | |
160 | ||
161 | typedef struct fix fixS; | |
162 | ||
e46d99eb | 163 | extern int finalize_syms; |
a161fe53 | 164 | extern symbolS *abs_section_sym; |
26346241 | 165 | extern addressT dot_value; |
e46d99eb | 166 | |
252b5132 RH |
167 | #ifndef BFD_ASSEMBLER |
168 | extern char *next_object_file_charP; | |
169 | ||
170 | #ifndef MANY_SEGMENTS | |
a01b9fa4 KH |
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. */ | |
252b5132 | 176 | #endif |
a01b9fa4 | 177 | COMMON fixS **seg_fix_rootP, **seg_fix_tailP; /* -> one of above. */ |
252b5132 RH |
178 | #endif |
179 | ||
180 | extern long string_byte_count; | |
181 | extern int section_alignment[]; | |
182 | ||
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)); | |
0a9ef439 | 188 | extern int get_recorded_alignment PARAMS ((segT seg)); |
252b5132 RH |
189 | extern void subsegs_finish PARAMS ((void)); |
190 | extern void write_object_file PARAMS ((void)); | |
c842b53a | 191 | extern long relax_frag PARAMS ((segT, fragS *, long)); |
e46d99eb | 192 | extern int relax_segment |
252b5132 RH |
193 | PARAMS ((struct frag * seg_frag_root, segT seg_type)); |
194 | ||
195 | extern void number_to_chars_littleendian PARAMS ((char *, valueT, int)); | |
196 | extern void number_to_chars_bigendian PARAMS ((char *, valueT, int)); | |
197 | ||
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 | |
213 | ||
214 | extern void write_print_statistics PARAMS ((FILE *)); | |
215 | ||
216 | #endif /* __write_h__ */ |