1
/* IBM RS/6000 "XCOFF" file definitions for BFD.
2
Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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
7
Written by Mimi Ph\373\364ng-Th\345o V\365 of IBM
8
and John Gilmore of Cygnus Support. */
10
/********************** FILE HEADER **********************/
12
struct external_filehdr {
13
char f_magic[2]; /* magic number */
14
char f_nscns[2]; /* number of sections */
15
char f_timdat[4]; /* time & date stamp */
16
char f_symptr[4]; /* file pointer to symtab */
17
char f_nsyms[4]; /* number of symtab entries */
18
char f_opthdr[2]; /* sizeof(optional hdr) */
19
char f_flags[2]; /* flags */
23
#define U802WRMAGIC 0730 /* writeable text segments **chh** */
24
#define U802ROMAGIC 0735 /* readonly sharable text segments */
25
#define U802TOCMAGIC 0737 /* readonly text segments and TOC */
28
((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \
29
(x).f_magic != U802TOCMAGIC)
31
#define FILHDR struct external_filehdr
35
/********************** AOUT "OPTIONAL HEADER" **********************/
40
unsigned char magic[2]; /* type of file */
41
unsigned char vstamp[2]; /* version stamp */
42
unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */
43
unsigned char dsize[4]; /* initialized data " " */
44
unsigned char bsize[4]; /* uninitialized data " " */
45
unsigned char entry[4]; /* entry pt. */
46
unsigned char text_start[4]; /* base of text used for this file */
47
unsigned char data_start[4]; /* base of data used for this file */
48
unsigned char o_toc[4]; /* address of TOC */
49
unsigned char o_snentry[2]; /* section number of entry point */
50
unsigned char o_sntext[2]; /* section number of .text section */
51
unsigned char o_sndata[2]; /* section number of .data section */
52
unsigned char o_sntoc[2]; /* section number of TOC */
53
unsigned char o_snloader[2]; /* section number of .loader section */
54
unsigned char o_snbss[2]; /* section number of .bss section */
55
unsigned char o_algntext[2]; /* .text alignment */
56
unsigned char o_algndata[2]; /* .data alignment */
57
unsigned char o_modtype[2]; /* module type (??) */
58
unsigned char o_cputype[2]; /* cpu type */
59
unsigned char o_maxstack[4]; /* max stack size (??) */
60
unsigned char o_maxdata[4]; /* max data size (??) */
61
unsigned char o_resv2[12]; /* reserved */
66
#define SMALL_AOUTSZ (28)
69
/********************** SECTION HEADER **********************/
72
struct external_scnhdr {
73
char s_name[8]; /* section name */
74
char s_paddr[4]; /* physical address, aliased s_nlib */
75
char s_vaddr[4]; /* virtual address */
76
char s_size[4]; /* section size */
77
char s_scnptr[4]; /* file ptr to raw data for section */
78
char s_relptr[4]; /* file ptr to relocation */
79
char s_lnnoptr[4]; /* file ptr to line numbers */
80
char s_nreloc[2]; /* number of relocation entries */
81
char s_nlnno[2]; /* number of line number entries*/
82
char s_flags[4]; /* flags */
85
#define SCNHDR struct external_scnhdr
88
/********************** LINE NUMBERS **********************/
90
/* 1 line number entry for every "breakpointable" source line in a section.
91
* Line numbers are grouped on a per function basis; first entry in a function
92
* grouping will have l_lnno = 0 and in place of physical address will be the
93
* symbol table index of the function name.
95
struct external_lineno {
97
char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
98
char l_paddr[4]; /* (physical) address of line number */
100
char l_lnno[2]; /* line number */
104
#define LINENO struct external_lineno
108
/********************** SYMBOLS **********************/
110
#define E_SYMNMLEN 8 /* # characters in a symbol name */
111
#define E_FILNMLEN 14 /* # characters in a file name */
112
#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
114
struct external_syment
117
char e_name[E_SYMNMLEN];
132
#define N_BTMASK (017)
133
#define N_TMASK (060)
138
union external_auxent {
140
char x_tagndx[4]; /* str, un, or enum tag indx */
143
char x_lnno[2]; /* declaration line number */
144
char x_size[2]; /* str/union/array size */
146
char x_fsize[4]; /* size of function */
149
struct { /* if ISFCN, tag, or .bb */
150
char x_lnnoptr[4]; /* ptr to fcn line # */
151
char x_endndx[4]; /* entry ndx past block end */
153
struct { /* if ISARY, up to 4 dimen. */
154
char x_dimen[E_DIMNUM][2];
157
char x_tvndx[2]; /* tv index */
161
char x_fname[E_FILNMLEN];
169
char x_scnlen[4]; /* section length */
170
char x_nreloc[2]; /* # relocation entries */
171
char x_nlinno[2]; /* # line numbers */
175
char x_tvfill[4]; /* tv fill value */
176
char x_tvlen[2]; /* length of .tv */
177
char x_tvran[2][2]; /* tv range */
178
} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
181
unsigned char x_scnlen[4];
182
unsigned char x_parmhash[4];
183
unsigned char x_snhash[2];
184
unsigned char x_smtyp[1];
185
unsigned char x_smclas[1];
186
unsigned char x_stab[4];
187
unsigned char x_snstab[2];
192
#define SYMENT struct external_syment
194
#define AUXENT union external_auxent
196
#define DBXMASK 0x80 /* for dbx storage mask */
197
#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)
201
/********************** RELOCATION DIRECTIVES **********************/
204
struct external_reloc {
212
#define RELOC struct external_reloc
215
#define DEFAULT_DATA_SECTION_ALIGNMENT 4
216
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
217
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
218
/* For new sections we havn't heard of before */
219
#define DEFAULT_SECTION_ALIGNMENT 4
221
/* The ldhdr structure. This appears at the start of the .loader
224
struct external_ldhdr
226
bfd_byte l_version[4];
228
bfd_byte l_nreloc[4];
229
bfd_byte l_istlen[4];
230
bfd_byte l_nimpid[4];
231
bfd_byte l_impoff[4];
236
#define LDHDRSZ (8 * 4)
238
struct external_ldsym
242
bfd_byte _l_name[SYMNMLEN];
245
bfd_byte _l_zeroes[4];
246
bfd_byte _l_offset[4];
251
bfd_byte l_smtype[1];
252
bfd_byte l_smclas[1];
257
#define LDSYMSZ (8 + 3 * 4 + 2 + 2)
259
struct external_ldrel
262
bfd_byte l_symndx[4];
264
bfd_byte l_rsecnm[2];
267
#define LDRELSZ (2 * 4 + 2 * 2)