Commit | Line | Data |
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252b5132 | 1 | /* IBM RS/6000 "XCOFF" file definitions for BFD. |
4f1d9bd8 | 2 | Copyright 1990, 1991, 1993, 1994, 1995 Free Software Foundation, Inc. |
252b5132 RH |
3 | FIXME: Can someone provide a transliteration of this name into ASCII? |
4 | Using the following chars caused a compiler warning on HIUX (so I replaced | |
5 | them with octal escapes), and isn't useful without an understanding of what | |
6 | character set it is. | |
7 | Written by Mimi Ph\373\364ng-Th\345o V\365 of IBM | |
8 | and John Gilmore of Cygnus Support. */ | |
9 | ||
4f1d9bd8 NC |
10 | #define DO_NOT_DEFINE_AOUTHDR |
11 | #define DO_NOT_DEFINE_AUXENT | |
12 | #define L_LNNO_SIZE 2 | |
13 | #include "coff/external.h" | |
252b5132 RH |
14 | |
15 | /* IBM RS/6000 */ | |
16 | #define U802WRMAGIC 0730 /* writeable text segments **chh** */ | |
17 | #define U802ROMAGIC 0735 /* readonly sharable text segments */ | |
18 | #define U802TOCMAGIC 0737 /* readonly text segments and TOC */ | |
19 | ||
20 | #define BADMAG(x) \ | |
21 | ((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \ | |
22 | (x).f_magic != U802TOCMAGIC) | |
23 | ||
252b5132 RH |
24 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
25 | ||
252b5132 RH |
26 | typedef struct |
27 | { | |
28 | unsigned char magic[2]; /* type of file */ | |
29 | unsigned char vstamp[2]; /* version stamp */ | |
30 | unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */ | |
31 | unsigned char dsize[4]; /* initialized data " " */ | |
32 | unsigned char bsize[4]; /* uninitialized data " " */ | |
33 | unsigned char entry[4]; /* entry pt. */ | |
34 | unsigned char text_start[4]; /* base of text used for this file */ | |
35 | unsigned char data_start[4]; /* base of data used for this file */ | |
36 | unsigned char o_toc[4]; /* address of TOC */ | |
37 | unsigned char o_snentry[2]; /* section number of entry point */ | |
38 | unsigned char o_sntext[2]; /* section number of .text section */ | |
39 | unsigned char o_sndata[2]; /* section number of .data section */ | |
40 | unsigned char o_sntoc[2]; /* section number of TOC */ | |
41 | unsigned char o_snloader[2]; /* section number of .loader section */ | |
42 | unsigned char o_snbss[2]; /* section number of .bss section */ | |
43 | unsigned char o_algntext[2]; /* .text alignment */ | |
44 | unsigned char o_algndata[2]; /* .data alignment */ | |
45 | unsigned char o_modtype[2]; /* module type (??) */ | |
46 | unsigned char o_cputype[2]; /* cpu type */ | |
47 | unsigned char o_maxstack[4]; /* max stack size (??) */ | |
48 | unsigned char o_maxdata[4]; /* max data size (??) */ | |
49 | unsigned char o_resv2[12]; /* reserved */ | |
50 | } | |
51 | AOUTHDR; | |
52 | ||
53 | #define AOUTSZ 72 | |
54 | #define SMALL_AOUTSZ (28) | |
55 | #define AOUTHDRSZ 72 | |
56 | ||
57 | #define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */ | |
58 | #define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */ | |
59 | #define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */ | |
60 | ||
4f1d9bd8 | 61 | /* More names of "special" sections. */ |
252b5132 RH |
62 | #define _PAD ".pad" |
63 | #define _LOADER ".loader" | |
64 | ||
252b5132 RH |
65 | /* XCOFF uses a special .loader section with type STYP_LOADER. */ |
66 | #define STYP_LOADER 0x1000 | |
67 | ||
68 | /* XCOFF uses a special .debug section with type STYP_DEBUG. */ | |
69 | #define STYP_DEBUG 0x2000 | |
70 | ||
71 | /* XCOFF handles line number or relocation overflow by creating | |
72 | another section header with STYP_OVRFLO set. */ | |
73 | #define STYP_OVRFLO 0x8000 | |
74 | ||
4f1d9bd8 | 75 | union external_auxent |
252b5132 | 76 | { |
4f1d9bd8 NC |
77 | struct |
78 | { | |
79 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
80 | ||
81 | union | |
82 | { | |
83 | struct | |
84 | { | |
85 | char x_lnno[2]; /* declaration line number */ | |
86 | char x_size[2]; /* str/union/array size */ | |
87 | } x_lnsz; | |
88 | ||
89 | char x_fsize[4]; /* size of function */ | |
90 | ||
91 | } x_misc; | |
92 | ||
93 | union | |
94 | { | |
95 | struct /* if ISFCN, tag, or .bb */ | |
96 | { | |
97 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
98 | char x_endndx[4]; /* entry ndx past block end */ | |
99 | } x_fcn; | |
100 | ||
101 | struct /* if ISARY, up to 4 dimen. */ | |
102 | { | |
103 | char x_dimen[E_DIMNUM][2]; | |
104 | } x_ary; | |
105 | ||
106 | } x_fcnary; | |
107 | ||
108 | char x_tvndx[2]; /* tv index */ | |
109 | ||
110 | } x_sym; | |
111 | ||
112 | union | |
113 | { | |
114 | char x_fname[E_FILNMLEN]; | |
115 | ||
116 | struct | |
117 | { | |
118 | char x_zeroes[4]; | |
119 | char x_offset[4]; | |
120 | } x_n; | |
121 | ||
122 | } x_file; | |
123 | ||
124 | struct | |
125 | { | |
126 | char x_scnlen[4]; /* section length */ | |
127 | char x_nreloc[2]; /* # relocation entries */ | |
128 | char x_nlinno[2]; /* # line numbers */ | |
129 | } x_scn; | |
130 | ||
131 | struct | |
132 | { | |
133 | char x_tvfill[4]; /* tv fill value */ | |
134 | char x_tvlen[2]; /* length of .tv */ | |
135 | char x_tvran[2][2]; /* tv range */ | |
136 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
137 | ||
138 | struct | |
139 | { | |
140 | unsigned char x_scnlen[4]; | |
141 | unsigned char x_parmhash[4]; | |
142 | unsigned char x_snhash[2]; | |
143 | unsigned char x_smtyp[1]; | |
144 | unsigned char x_smclas[1]; | |
145 | unsigned char x_stab[4]; | |
146 | unsigned char x_snstab[2]; | |
147 | } x_csect; | |
252b5132 RH |
148 | }; |
149 | ||
252b5132 RH |
150 | #define AUXENT union external_auxent |
151 | #define AUXESZ 18 | |
4f1d9bd8 | 152 | |
252b5132 RH |
153 | #define DBXMASK 0x80 /* for dbx storage mask */ |
154 | #define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK) | |
155 | ||
252b5132 RH |
156 | /********************** RELOCATION DIRECTIVES **********************/ |
157 | ||
4f1d9bd8 NC |
158 | struct external_reloc |
159 | { | |
252b5132 RH |
160 | char r_vaddr[4]; |
161 | char r_symndx[4]; | |
162 | char r_size[1]; | |
163 | char r_type[1]; | |
164 | }; | |
165 | ||
252b5132 RH |
166 | #define RELOC struct external_reloc |
167 | #define RELSZ 10 | |
168 | ||
169 | #define DEFAULT_DATA_SECTION_ALIGNMENT 4 | |
170 | #define DEFAULT_BSS_SECTION_ALIGNMENT 4 | |
171 | #define DEFAULT_TEXT_SECTION_ALIGNMENT 4 | |
172 | /* For new sections we havn't heard of before */ | |
173 | #define DEFAULT_SECTION_ALIGNMENT 4 |