1#ifndef __ALPHA_A_OUT_H__
2#define __ALPHA_A_OUT_H__
3
4#include <linux/types.h>
5
6/*
7 * OSF/1 ECOFF header structs.  ECOFF files consist of:
8 * 	- a file header (struct filehdr),
9 *	- an a.out header (struct aouthdr),
10 *	- one or more section headers (struct scnhdr).
11 *	  The filhdr's "f_nscns" field contains the
12 *	  number of section headers.
13 */
14
15struct filehdr
16{
17	/* OSF/1 "file" header */
18	__u16 f_magic, f_nscns;
19	__u32 f_timdat;
20	__u64 f_symptr;
21	__u32 f_nsyms;
22	__u16 f_opthdr, f_flags;
23};
24
25struct aouthdr
26{
27	__u64 info;		/* after that it looks quite normal.. */
28	__u64 tsize;
29	__u64 dsize;
30	__u64 bsize;
31	__u64 entry;
32	__u64 text_start;	/* with a few additions that actually make sense */
33	__u64 data_start;
34	__u64 bss_start;
35	__u32 gprmask, fprmask;	/* bitmask of general & floating point regs used in binary */
36	__u64 gpvalue;
37};
38
39struct scnhdr
40{
41	char	s_name[8];
42	__u64	s_paddr;
43	__u64	s_vaddr;
44	__u64	s_size;
45	__u64	s_scnptr;
46	__u64	s_relptr;
47	__u64	s_lnnoptr;
48	__u16	s_nreloc;
49	__u16	s_nlnno;
50	__u32	s_flags;
51};
52
53struct exec
54{
55	/* OSF/1 "file" header */
56	struct filehdr		fh;
57	struct aouthdr		ah;
58};
59
60/*
61 * Define's so that the kernel exec code can access the a.out header
62 * fields...
63 */
64#define	a_info		ah.info
65#define	a_text		ah.tsize
66#define a_data		ah.dsize
67#define a_bss		ah.bsize
68#define a_entry		ah.entry
69#define a_textstart	ah.text_start
70#define	a_datastart	ah.data_start
71#define	a_bssstart	ah.bss_start
72#define	a_gprmask	ah.gprmask
73#define a_fprmask	ah.fprmask
74#define a_gpvalue	ah.gpvalue
75
76#define N_TXTADDR(x) ((x).a_textstart)
77#define N_DATADDR(x) ((x).a_datastart)
78#define N_BSSADDR(x) ((x).a_bssstart)
79#define N_DRSIZE(x) 0
80#define N_TRSIZE(x) 0
81#define N_SYMSIZE(x) 0
82
83#define AOUTHSZ		sizeof(struct aouthdr)
84#define SCNHSZ		sizeof(struct scnhdr)
85#define SCNROUND	16
86
87#define N_TXTOFF(x) \
88  ((long) N_MAGIC(x) == ZMAGIC ? 0 : \
89   (sizeof(struct exec) + (x).fh.f_nscns*SCNHSZ + SCNROUND - 1) & ~(SCNROUND - 1))
90
91#ifdef __KERNEL__
92
93/* Assume that start addresses below 4G belong to a TASO application.
94   Unfortunately, there is no proper bit in the exec header to check.
95   Worse, we have to notice the start address before swapping to use
96   /sbin/loader, which of course is _not_ a TASO application.  */
97#define SET_AOUT_PERSONALITY(BFPM, EX) \
98	set_personality (((BFPM->sh_bang || EX.ah.entry < 0x100000000 \
99			   ? ADDR_LIMIT_32BIT : 0) | PER_OSF4))
100
101#define STACK_TOP \
102  (current->personality & ADDR_LIMIT_32BIT ? 0x80000000 : 0x00120000000UL)
103
104#endif
105
106#endif /* __A_OUT_GNU_H__ */
107