Commit | Line | Data |
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252b5132 | 1 | /* write.h |
2da5c037 | 2 | Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, |
20ee54e8 AM |
3 | 2002, 2003, 2005, 2006, 2007 |
4 | Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 RH |
22 | |
23 | #ifndef __write_h__ | |
24 | #define __write_h__ | |
25 | ||
26 | #ifndef TC_I960 | |
27 | #ifdef hpux | |
28 | #define EXEC_MACHINE_TYPE HP9000S200_ID | |
29 | #endif | |
30 | #endif /* TC_I960 */ | |
31 | ||
252b5132 RH |
32 | /* This is the name of a fake symbol which will never appear in the |
33 | assembler output. S_IS_LOCAL detects it because of the \001. */ | |
7ff0565e | 34 | #ifndef FAKE_LABEL_NAME |
252b5132 | 35 | #define FAKE_LABEL_NAME "L0\001" |
7ff0565e | 36 | #endif |
252b5132 RH |
37 | |
38 | #include "bit_fix.h" | |
39 | ||
40 | /* | |
41 | * FixSs may be built up in any order. | |
42 | */ | |
43 | ||
44 | struct fix | |
45 | { | |
46 | /* These small fields are grouped together for compactness of | |
47 | this structure, and efficiency of access on some architectures. */ | |
48 | ||
252b5132 RH |
49 | /* Is this a pc-relative relocation? */ |
50 | unsigned fx_pcrel : 1; | |
51 | ||
252b5132 | 52 | /* Is this value an immediate displacement? */ |
20ee54e8 | 53 | /* Only used on ns32k; merge it into TC_FIX_TYPE sometime. */ |
252b5132 RH |
54 | unsigned fx_im_disp : 2; |
55 | ||
20ee54e8 | 56 | /* Some bits for the CPU specific code. */ |
252b5132 | 57 | unsigned fx_tcbit : 1; |
20ee54e8 | 58 | unsigned fx_tcbit2 : 1; |
252b5132 RH |
59 | |
60 | /* Has this relocation already been applied? */ | |
61 | unsigned fx_done : 1; | |
62 | ||
63 | /* Suppress overflow complaints on large addends. This is used | |
64 | in the PowerPC ELF config to allow large addends on the | |
65 | BFD_RELOC_{LO16,HI16,HI16_S} relocations. | |
66 | ||
67 | @@ Can this be determined from BFD? */ | |
68 | unsigned fx_no_overflow : 1; | |
69 | ||
70 | /* The value is signed when checking for overflow. */ | |
71 | unsigned fx_signed : 1; | |
72 | ||
20ee54e8 AM |
73 | /* pc-relative offset adjust (only used by m68k and m68hc11) */ |
74 | char fx_pcrel_adjust; | |
75 | ||
76 | /* How many bytes are involved? */ | |
77 | unsigned char fx_size; | |
78 | ||
252b5132 RH |
79 | /* Which frag does this fix apply to? */ |
80 | fragS *fx_frag; | |
81 | ||
82 | /* Where is the first byte to fix up? */ | |
83 | long fx_where; | |
84 | ||
a01b9fa4 | 85 | /* NULL or Symbol whose value we add in. */ |
252b5132 RH |
86 | symbolS *fx_addsy; |
87 | ||
a01b9fa4 | 88 | /* NULL or Symbol whose value we subtract. */ |
252b5132 RH |
89 | symbolS *fx_subsy; |
90 | ||
a01b9fa4 | 91 | /* Absolute number we add in. */ |
252b5132 RH |
92 | valueT fx_offset; |
93 | ||
26346241 AM |
94 | /* The value of dot when the fixup expression was parsed. */ |
95 | addressT fx_dot_value; | |
96 | ||
252b5132 RH |
97 | /* Next fixS in linked list, or NULL. */ |
98 | struct fix *fx_next; | |
99 | ||
100 | /* If NULL, no bitfix's to do. */ | |
101 | /* Only i960-coff and ns32k use this, and i960-coff stores an | |
102 | integer. This can probably be folded into tc_fix_data, below. | |
103 | @@ Alpha also uses it, but only to disable certain relocation | |
104 | processing. */ | |
105 | bit_fixS *fx_bit_fixP; | |
106 | ||
252b5132 | 107 | bfd_reloc_code_real_type fx_r_type; |
252b5132 RH |
108 | |
109 | /* This field is sort of misnamed. It appears to be a sort of random | |
110 | scratch field, for use by the back ends. The main gas code doesn't | |
111 | do anything but initialize it to zero. The use of it does need to | |
112 | be coordinated between the cpu and format files, though. E.g., some | |
113 | coff targets pass the `addend' field from the cpu file via this | |
114 | field. I don't know why the `fx_offset' field above can't be used | |
115 | for that; investigate later and document. KR */ | |
116 | valueT fx_addnumber; | |
117 | ||
118 | /* The location of the instruction which created the reloc, used | |
119 | in error messages. */ | |
120 | char *fx_file; | |
121 | unsigned fx_line; | |
122 | ||
123 | #ifdef USING_CGEN | |
124 | struct { | |
125 | /* CGEN_INSN entry for this instruction. */ | |
126 | const struct cgen_insn *insn; | |
127 | /* Target specific data, usually reloc number. */ | |
128 | int opinfo; | |
280d71bf DB |
129 | /* Which ifield this fixup applies to. */ |
130 | struct cgen_maybe_multi_ifield * field; | |
131 | /* is this field is the MSB field in a set? */ | |
132 | int msb_field_p; | |
252b5132 RH |
133 | } fx_cgen; |
134 | #endif | |
135 | ||
136 | #ifdef TC_FIX_TYPE | |
137 | /* Location where a backend can attach additional data | |
138 | needed to perform fixups. */ | |
139 | TC_FIX_TYPE tc_fix_data; | |
140 | #endif | |
141 | }; | |
142 | ||
143 | typedef struct fix fixS; | |
144 | ||
e46d99eb | 145 | extern int finalize_syms; |
a161fe53 | 146 | extern symbolS *abs_section_sym; |
26346241 | 147 | extern addressT dot_value; |
252b5132 RH |
148 | extern long string_byte_count; |
149 | extern int section_alignment[]; | |
150 | ||
d7342424 KH |
151 | extern void append (char **charPP, char *fromP, unsigned long length); |
152 | extern void record_alignment (segT seg, int align); | |
153 | extern int get_recorded_alignment (segT seg); | |
154 | extern void subsegs_finish (void); | |
155 | extern void write_object_file (void); | |
156 | extern long relax_frag (segT, fragS *, long); | |
32638454 | 157 | extern int relax_segment (struct frag *, segT, int); |
d7342424 KH |
158 | extern void number_to_chars_littleendian (char *, valueT, int); |
159 | extern void number_to_chars_bigendian (char *, valueT, int); | |
252b5132 | 160 | extern fixS *fix_new |
d7342424 KH |
161 | (fragS * frag, int where, int size, symbolS * add_symbol, |
162 | offsetT offset, int pcrel, bfd_reloc_code_real_type r_type); | |
252b5132 | 163 | extern fixS *fix_new_exp |
d7342424 KH |
164 | (fragS * frag, int where, int size, expressionS *exp, int pcrel, |
165 | bfd_reloc_code_real_type r_type); | |
d7342424 | 166 | extern void write_print_statistics (FILE *); |
252b5132 RH |
167 | |
168 | #endif /* __write_h__ */ |