1 #ifndef __A_OUT_GNU_H__
2 #define __A_OUT_GNU_H__
3
4 #include <bits/a.out.h>
5
6 #define __GNU_EXEC_MACROS__
7
8 /*
9 * OSF/1 ECOFF header structs. ECOFF files consist of:
10 * - a file header (struct filehdr),
11 * - an a.out header (struct aouthdr),
12 * - one or more section headers (struct scnhdr).
13 * The filhdr's "f_nscns" field contains the
14 * number of section headers.
15 */
16
17 struct filehdr
18 {
19 /* OSF/1 "file" header */
20 unsigned short f_magic, f_nscns;
21 unsigned int f_timdat;
22 unsigned long f_symptr;
23 unsigned int f_nsyms;
24 unsigned short f_opthdr, f_flags;
25 };
26
27 struct aouthdr
28 {
29 unsigned long info; /* After that it looks quite normal.. */
30 unsigned long tsize;
31 unsigned long dsize;
32 unsigned long bsize;
33 unsigned long entry;
34 unsigned long text_start; /* With a few additions that actually make sense. */
35 unsigned long data_start;
36 unsigned long bss_start;
37 unsigned int gprmask, fprmask; /* Bitmask of general & floating point regs used in binary. */
38 unsigned long gpvalue;
39 };
40
41 struct scnhdr
42 {
43 char s_name[8];
44 unsigned long s_paddr;
45 unsigned long s_vaddr;
46 unsigned long s_size;
47 unsigned long s_scnptr;
48 unsigned long s_relptr;
49 unsigned long s_lnnoptr;
50 unsigned short s_nreloc;
51 unsigned short s_nlnno;
52 unsigned int s_flags;
53 };
54
55 struct exec
56 {
57 /* OSF/1 "file" header */
58 struct filehdr fh;
59 struct aouthdr ah;
60 };
61
62 #define a_info ah.info
63 #define a_text ah.tsize
64 #define a_data ah.dsize
65 #define a_bss ah.bsize
66 #define a_entry ah.entry
67 #define a_textstart ah.text_start
68 #define a_datastart ah.data_start
69 #define a_bssstart ah.bss_start
70 #define a_gprmask ah.gprmask
71 #define a_fprmask ah.fprmask
72 #define a_gpvalue ah.gpvalue
73
74
75 #define AOUTHSZ sizeof (struct aouthdr)
76 #define SCNHSZ sizeof (struct scnhdr)
77 #define SCNROUND 16
78
79 enum machine_type
80 {
81 M_OLDSUN2 = 0,
82 M_68010 = 1,
83 M_68020 = 2,
84 M_SPARC = 3,
85 M_386 = 100,
86 M_MIPS1 = 151,
87 M_MIPS2 = 152
88 };
89
90 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
91 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
92 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
93 #define N_SET_INFO(exec, magic, type, flags) \
94 ((exec).a_info = ((magic) & 0xffff) \
95 | (((int)(type) & 0xff) << 16) \
96 | (((flags) & 0xff) << 24))
97 #define N_SET_MAGIC(exec, magic) \
98 ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff))
99 #define N_SET_MACHTYPE(exec, machtype) \
100 ((exec).a_info = \
101 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
102 #define N_SET_FLAGS(exec, flags) \
103 ((exec).a_info = \
104 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
105
106 /* Code indicating object file or impure executable. */
107 #define OMAGIC 0407
108 /* Code indicating pure executable. */
109 #define NMAGIC 0410
110 /* Code indicating demand-paged executable. */
111 #define ZMAGIC 0413
112 /* This indicates a demand-paged executable with the header in the text.
113 The first page is unmapped to help trap NULL pointer references. */
114 #define QMAGIC 0314
115 /* Code indicating core file. */
116 #define CMAGIC 0421
117
118 #define N_TRSIZE(x) 0
119 #define N_DRSIZE(x) 0
120 #define N_SYMSIZE(x) 0
121 #define N_BADMAG(x) \
122 (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \
123 && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC)
124 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
125 #define N_TXTOFF(x) \
126 ((long) N_MAGIC(x) == ZMAGIC ? 0 \
127 : ((sizeof (struct exec) + (x).fh.f_nscns * SCNHSZ + SCNROUND - 1) \
128 & ~(SCNROUND - 1)))
129
130 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
131 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
132 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
133 #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))
134 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
135
136 /* Address of text segment in memory after it is loaded. */
137 #define N_TXTADDR(x) ((x).a_textstart)
138
139 /* Address of data segment in memory after it is loaded. */
140 #define SEGMENT_SIZE 1024
141
142 #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
143 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
144
145 #define N_DATADDR(x) ((x).a_datastart)
146 #define N_BSSADDR(x) ((x).a_bssstart)
147
148 #if !defined (N_NLIST_DECLARED)
149 struct nlist
150 {
151 union
152 {
153 char *n_name;
154 struct nlist *n_next;
155 long n_strx;
156 } n_un;
157 unsigned char n_type;
158 char n_other;
159 short n_desc;
160 unsigned long n_value;
161 };
162 #endif /* no N_NLIST_DECLARED. */
163
164 #define N_UNDF 0
165 #define N_ABS 2
166 #define N_TEXT 4
167 #define N_DATA 6
168 #define N_BSS 8
169 #define N_FN 15
170 #define N_EXT 1
171 #define N_TYPE 036
172 #define N_STAB 0340
173 #define N_INDR 0xa
174 #define N_SETA 0x14 /* Absolute set element symbol. */
175 #define N_SETT 0x16 /* Text set element symbol. */
176 #define N_SETD 0x18 /* Data set element symbol. */
177 #define N_SETB 0x1A /* Bss set element symbol. */
178 #define N_SETV 0x1C /* Pointer to set vector in data area. */
179
180 #if !defined (N_RELOCATION_INFO_DECLARED)
181 /* This structure describes a single relocation to be performed.
182 The text-relocation section of the file is a vector of these structures,
183 all of which apply to the text section.
184 Likewise, the data-relocation section applies to the data section. */
185
186 struct relocation_info
187 {
188 int r_address;
189 unsigned int r_symbolnum:24;
190 unsigned int r_pcrel:1;
191 unsigned int r_length:2;
192 unsigned int r_extern:1;
193 unsigned int r_pad:4;
194 };
195 #endif /* no N_RELOCATION_INFO_DECLARED. */
196
197 #endif /* __A_OUT_GNU_H__ */