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7f6d05e8 | 1 | /* IBM RS/6000 "XCOFF64" file definitions for BFD. |
4f1d9bd8 NC |
2 | |
3 | Copyright 2000 Free Software Foundation, Inc. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
18 | ||
19 | #define DO_NOT_DEFINE_AOUTHDR | |
20 | #define DO_NOT_DEFINE_SCNHDR | |
21 | #define DO_NOT_DEFINE_LINENO | |
22 | #define DO_NOT_DEFINE_AUXENT | |
23 | #include "coff/external.h" | |
7f6d05e8 CP |
24 | |
25 | /* IBM RS/6000 */ | |
c6664dfb | 26 | #define U803XTOCMAGIC 0757 /* readonly text segments and TOC, XCOFF64 */ |
7f6d05e8 | 27 | |
c6664dfb | 28 | #define BADMAG(x) ((x).f_magic != U803XTOCMAGIC) |
7f6d05e8 | 29 | |
7f6d05e8 CP |
30 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
31 | ||
7f6d05e8 CP |
32 | typedef struct |
33 | { | |
4f1d9bd8 NC |
34 | unsigned char magic[2]; /* type of file */ |
35 | unsigned char vstamp[2]; /* version stamp */ | |
36 | unsigned char o_debugger[4]; /* reserved */ | |
7f6d05e8 CP |
37 | unsigned char text_start[8]; /* base of text used for this file */ |
38 | unsigned char data_start[8]; /* base of data used for this file */ | |
39 | unsigned char o_toc[8]; /* address of TOC */ | |
4f1d9bd8 NC |
40 | unsigned char o_snentry[2]; /* section number of entry point */ |
41 | unsigned char o_sntext[2]; /* section number of .text section */ | |
42 | unsigned char o_sndata[2]; /* section number of .data section */ | |
43 | unsigned char o_sntoc[2]; /* section number of TOC */ | |
44 | unsigned char o_snloader[2]; /* section number of .loader section */ | |
45 | unsigned char o_snbss[2]; /* section number of .bss section */ | |
46 | unsigned char o_algntext[2]; /* .text alignment */ | |
47 | unsigned char o_algndata[2]; /* .data alignment */ | |
48 | unsigned char o_modtype[2]; /* module type (??) */ | |
49 | unsigned char o_cputype[2]; /* cpu type */ | |
50 | unsigned char o_resv2[4]; /* reserved */ | |
51 | unsigned char tsize[8]; /* text size bytes, padded to FW bdry */ | |
52 | unsigned char dsize[8]; /* initialized data " " */ | |
53 | unsigned char bsize[8]; /* uninitialized data " " */ | |
54 | unsigned char entry[8]; /* entry pt. */ | |
7f6d05e8 CP |
55 | unsigned char o_maxstack[8]; /* max stack size (??) */ |
56 | unsigned char o_maxdata[8]; /* max data size (??) */ | |
4f1d9bd8 | 57 | unsigned char o_resv3[16]; /* reserved */ |
7f6d05e8 CP |
58 | } |
59 | AOUTHDR; | |
60 | ||
c6664dfb | 61 | #define AOUTSZ 120 |
7f6d05e8 CP |
62 | #define SMALL_AOUTSZ (0) |
63 | #define AOUTHDRSZ 72 | |
64 | ||
65 | #define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */ | |
66 | #define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */ | |
67 | #define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */ | |
68 | ||
69 | ||
70 | /********************** SECTION HEADER **********************/ | |
4f1d9bd8 NC |
71 | struct external_scnhdr |
72 | { | |
73 | char s_name[8]; /* section name */ | |
7f6d05e8 CP |
74 | char s_paddr[8]; /* physical address, aliased s_nlib */ |
75 | char s_vaddr[8]; /* virtual address */ | |
76 | char s_size[8]; /* section size */ | |
77 | char s_scnptr[8]; /* file ptr to raw data for section */ | |
78 | char s_relptr[8]; /* file ptr to relocation */ | |
79 | char s_lnnoptr[8]; /* file ptr to line numbers */ | |
80 | char s_nreloc[4]; /* number of relocation entries */ | |
81 | char s_nlnno[4]; /* number of line number entries*/ | |
4f1d9bd8 NC |
82 | char s_flags[4]; /* flags */ |
83 | char s_pad[4]; /* padding */ | |
7f6d05e8 CP |
84 | }; |
85 | ||
86 | /* | |
87 | * names of "special" sections | |
88 | */ | |
89 | #define _TEXT ".text" | |
90 | #define _DATA ".data" | |
91 | #define _BSS ".bss" | |
92 | #define _PAD ".pad" | |
93 | #define _LOADER ".loader" | |
94 | ||
95 | #define SCNHDR struct external_scnhdr | |
96 | ||
97 | #define SCNHSZ 72 | |
98 | ||
99 | /* XCOFF uses a special .loader section with type STYP_LOADER. */ | |
100 | #define STYP_LOADER 0x1000 | |
101 | ||
102 | /* XCOFF uses a special .debug section with type STYP_DEBUG. */ | |
103 | #define STYP_DEBUG 0x2000 | |
104 | ||
105 | /* XCOFF handles line number or relocation overflow by creating | |
106 | another section header with STYP_OVRFLO set. */ | |
107 | #define STYP_OVRFLO 0x8000 | |
108 | ||
109 | /********************** LINE NUMBERS **********************/ | |
110 | ||
111 | /* 1 line number entry for every "breakpointable" source line in a section. | |
4f1d9bd8 NC |
112 | Line numbers are grouped on a per function basis; first entry in a function |
113 | grouping will have l_lnno = 0 and in place of physical address will be the | |
114 | symbol table index of the function name. */ | |
115 | struct external_lineno | |
116 | { | |
117 | union | |
118 | { | |
119 | char l_symndx[8];/* function name symbol index, iff l_lnno == 0*/ | |
120 | char l_paddr[8]; /* (physical) address of line number */ | |
121 | } l_addr; | |
7f6d05e8 | 122 | |
4f1d9bd8 NC |
123 | char l_lnno[4]; /* line number */ |
124 | }; | |
7f6d05e8 CP |
125 | |
126 | #define LINENO struct external_lineno | |
7f6d05e8 CP |
127 | #define LINESZ 12 |
128 | ||
129 | ||
4f1d9bd8 | 130 | union external_auxent |
7f6d05e8 | 131 | { |
4f1d9bd8 NC |
132 | struct |
133 | { | |
134 | union | |
135 | { | |
136 | struct | |
137 | { | |
138 | char x_lnno[4]; /* declaration line number */ | |
139 | char x_size[2]; /* str/union/array size */ | |
140 | } x_lnsz; | |
141 | ||
142 | struct | |
143 | { | |
144 | char x_lnnoptr[8];/* ptr to fcn line */ | |
145 | char x_fsize[4]; /* size of function */ | |
146 | char x_endndx[4]; /* entry ndx past block end */ | |
147 | } x_fcn; | |
148 | ||
149 | } x_fcnary; | |
150 | ||
151 | } x_sym; | |
7f6d05e8 | 152 | |
4f1d9bd8 NC |
153 | union |
154 | { | |
155 | char x_fname[E_FILNMLEN]; | |
156 | ||
157 | struct | |
158 | { | |
159 | char x_zeroes[4]; | |
160 | char x_offset[4]; | |
161 | char x_pad[6]; | |
162 | unsigned char x_ftype[1]; | |
163 | unsigned char x_resv[2]; | |
164 | } x_n; | |
165 | ||
166 | } x_file; | |
167 | ||
168 | struct | |
169 | { | |
170 | char x_exptr[8]; | |
171 | char x_fsize[4]; | |
172 | char x_endndx[4]; | |
173 | char x_pad[1]; | |
174 | } x_except; | |
175 | ||
176 | struct | |
177 | { | |
178 | unsigned char x_scnlen_lo[4]; | |
179 | unsigned char x_parmhash[4]; | |
180 | unsigned char x_snhash[2]; | |
181 | unsigned char x_smtyp[1]; | |
182 | unsigned char x_smclas[1]; | |
183 | unsigned char x_scnlen_hi[4]; | |
184 | unsigned char x_pad[1]; | |
185 | } x_csect; | |
186 | ||
187 | struct | |
188 | { | |
189 | char x_pad[17]; | |
190 | char x_auxtype[1]; | |
191 | } x_auxtype; | |
7f6d05e8 CP |
192 | }; |
193 | ||
7f6d05e8 CP |
194 | #define AUXENT union external_auxent |
195 | #define AUXESZ 18 | |
4f1d9bd8 | 196 | |
7f6d05e8 CP |
197 | #define DBXMASK 0x80 /* for dbx storage mask */ |
198 | #define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK) | |
199 | ||
200 | /* Values for auxtype field in XCOFF64, taken from AIX 4.3 sym.h */ | |
201 | #define _AUX_EXCEPT 255 | |
202 | #define _AUX_FCN 254 | |
203 | #define _AUX_SYM 253 | |
204 | #define _AUX_FILE 252 | |
205 | #define _AUX_CSECT 251 | |
206 | ||
7f6d05e8 CP |
207 | /********************** RELOCATION DIRECTIVES **********************/ |
208 | ||
4f1d9bd8 NC |
209 | struct external_reloc |
210 | { | |
7f6d05e8 CP |
211 | char r_vaddr[8]; |
212 | char r_symndx[4]; | |
213 | char r_size[1]; | |
214 | char r_type[1]; | |
215 | }; | |
216 | ||
7f6d05e8 CP |
217 | #define RELOC struct external_reloc |
218 | #define RELSZ 14 | |
219 | ||
220 | #define DEFAULT_DATA_SECTION_ALIGNMENT 4 | |
221 | #define DEFAULT_BSS_SECTION_ALIGNMENT 4 | |
222 | #define DEFAULT_TEXT_SECTION_ALIGNMENT 4 | |
223 | /* For new sections we havn't heard of before */ | |
224 | #define DEFAULT_SECTION_ALIGNMENT 4 |