blob: 073d6463cc702b5485d460b7489659990f676346 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/*** coff information for 80960. Origins: Intel corp, natch. */
/* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */
/********************** FILE HEADER **********************/
struct external_filehdr {
char f_magic[2]; /* magic number */
char f_nscns[2]; /* number of sections */
char f_timdat[4]; /* time & date stamp */
char f_symptr[4]; /* file pointer to symtab */
char f_nsyms[4]; /* number of symtab entries */
char f_opthdr[2]; /* sizeof(optional hdr) */
char f_flags[2]; /* flags */
};
#define OMAGIC (0407) /* old impure format. data immediately
follows text. both sections are rw. */
#define NMAGIC (0410) /* split i&d, read-only text */
/*
* Intel 80960 (I960) processor flags.
* F_I960TYPE == mask for processor type field.
*/
#define F_I960TYPE (0xf000)
#define F_I960CORE (0x1000)
#define F_I960KB (0x2000)
#define F_I960SB (0x2000)
#define F_I960MC (0x3000)
#define F_I960XA (0x4000)
#define F_I960CA (0x5000)
#define F_I960KA (0x6000)
#define F_I960SA (0x6000)
/** i80960 Magic Numbers
*/
#define I960ROMAGIC (0x160) /* read-only text segments */
#define I960RWMAGIC (0x161) /* read-write text segments */
#define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC))
#define FILHDR struct external_filehdr
#define FILHSZ 20
/********************** AOUT "OPTIONAL HEADER" **********************/
typedef struct {
unsigned long phys_addr;
unsigned long bitarray;
} TAGBITS;
typedef struct
{
char magic[2]; /* type of file */
char vstamp[2]; /* version stamp */
char tsize[4]; /* text size in bytes, padded to FW bdry*/
char dsize[4]; /* initialized data " " */
char bsize[4]; /* uninitialized data " " */
char entry[4]; /* entry pt. */
char text_start[4]; /* base of text used for this file */
char data_start[4]; /* base of data used for this file */
char tagentries[4]; /* number of tag entries to follow */
}
AOUTHDR;
/* return a pointer to the tag bits array */
#define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1))
/* compute size of a header */
/*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/
#define AOUTSZ (sizeof(AOUTHDR))
/********************** SECTION HEADER **********************/
struct external_scnhdr {
char s_name[8]; /* section name */
char s_paddr[4]; /* physical address, aliased s_nlib */
char s_vaddr[4]; /* virtual address */
char s_size[4]; /* section size */
char s_scnptr[4]; /* file ptr to raw data for section */
char s_relptr[4]; /* file ptr to relocation */
char s_lnnoptr[4]; /* file ptr to line numbers */
char s_nreloc[2]; /* number of relocation entries */
char s_nlnno[2]; /* number of line number entries*/
char s_flags[4]; /* flags */
char s_align[4]; /* section alignment */
};
#define SCNHDR struct external_scnhdr
#define SCNHSZ sizeof(SCNHDR)
/*
* names of "special" sections
*/
#define _TEXT ".text"
#define _DATA ".data"
#define _BSS ".bss"
/********************** LINE NUMBERS **********************/
/* 1 line number entry for every "breakpointable" source line in a section.
* Line numbers are grouped on a per function basis; first entry in a function
* grouping will have l_lnno = 0 and in place of physical address will be the
* symbol table index of the function name.
*/
struct external_lineno {
union {
char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
char l_paddr[4]; /* (physical) address of line number */
} l_addr;
char l_lnno[2]; /* line number */
char padding[2]; /* force alignment */
};
#define LINENO struct external_lineno
#define LINESZ 8
/********************** SYMBOLS **********************/
#define SYMNMLEN 8 /* # characters in a symbol name */
#define FILNMLEN 14 /* # characters in a file name */
#define DIMNUM 4 /* # array dimensions in auxiliary entry */
struct external_syment
{
union {
char e_name[SYMNMLEN];
struct {
char e_zeroes[4];
char e_offset[4];
} e;
} e;
char e_value[4];
char e_scnum[2];
char e_flags[2];
char e_type[4];
char e_sclass[1];
char e_numaux[1];
char pad2[2];
};
#define N_BTMASK (0x1f)
#define N_TMASK (0x60)
#define N_BTSHFT (5)
#define N_TSHIFT (2)
union external_auxent {
struct {
char x_tagndx[4]; /* str, un, or enum tag indx */
union {
struct {
char x_lnno[2]; /* declaration line number */
char x_size[2]; /* str/union/array size */
} x_lnsz;
char x_fsize[4]; /* size of function */
} x_misc;
union {
struct { /* if ISFCN, tag, or .bb */
char x_lnnoptr[4]; /* ptr to fcn line # */
char x_endndx[4]; /* entry ndx past block end */
} x_fcn;
struct { /* if ISARY, up to 4 dimen. */
char x_dimen[DIMNUM][2];
} x_ary;
} x_fcnary;
char x_tvndx[2]; /* tv index */
} x_sym;
union {
char x_fname[FILNMLEN];
struct {
char x_zeroes[4];
char x_offset[4];
} x_n;
} x_file;
struct {
char x_scnlen[4]; /* section length */
char x_nreloc[2]; /* # relocation entries */
char x_nlinno[2]; /* # line numbers */
} x_scn;
struct {
char x_tvfill[4]; /* tv fill value */
char x_tvlen[2]; /* length of .tv */
char x_tvran[2][2]; /* tv range */
} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
/******************************************
* I960-specific *2nd* aux. entry formats
******************************************/
struct {
/* This is a very old typo that keeps getting propagated. */
#define x_stdindx x_stindx
char x_stindx[4]; /* sys. table entry */
} x_sc; /* system call entry */
struct {
char x_balntry[4]; /* BAL entry point */
} x_bal; /* BAL-callable function */
struct {
char x_timestamp[4]; /* time stamp */
char x_idstring[20]; /* producer identity string */
} x_ident; /* Producer ident info */
};
#define SYMENT struct external_syment
#define SYMESZ sizeof(SYMENT) /* FIXME - calc by hand */
#define AUXENT union external_auxent
#define AUXESZ sizeof(AUXENT) /* FIXME - calc by hand */
# define _ETEXT "_etext"
/********************** RELOCATION DIRECTIVES **********************/
struct external_reloc {
char r_vaddr[4];
char r_symndx[4];
char r_type[2];
char pad[2];
};
/* Relevent values for r_type and i960. Would someone please document them */
#define RELOC struct external_reloc
#define RELSZ 12
#define DEFAULT_DATA_SECTION_ALIGNMENT 4
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
/* For new sections we havn't heard of before */
#define DEFAULT_SECTION_ALIGNMENT 4
|
