1/* $Id: a.out.h,v 1.1.1.1 2008/10/15 03:29:18 james26_jang Exp $ */
2#ifndef __SPARC64_A_OUT_H__
3#define __SPARC64_A_OUT_H__
4
5#define SPARC_PGSIZE    0x2000        /* Thanks to the sun4 architecture... */
6#define SEGMENT_SIZE    SPARC_PGSIZE  /* whee... */
7
8#ifndef __ASSEMBLY__
9
10struct exec {
11	unsigned char a_dynamic:1;      /* A __DYNAMIC is in this image */
12	unsigned char a_toolversion:7;
13	unsigned char a_machtype;
14	unsigned short a_info;
15	unsigned int a_text;		/* length of text, in bytes */
16	unsigned int a_data;		/* length of data, in bytes */
17	unsigned int a_bss;		/* length of bss, in bytes */
18	unsigned int a_syms;		/* length of symbol table, in bytes */
19	unsigned int a_entry;		/* where program begins */
20	unsigned int a_trsize;
21	unsigned int a_drsize;
22};
23
24#endif /* !__ASSEMBLY__ */
25
26/* Where in the file does the text information begin? */
27#define N_TXTOFF(x)     (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
28
29/* Where do the Symbols start? */
30#define N_SYMOFF(x)     (N_TXTOFF(x) + (x).a_text +   \
31                         (x).a_data + (x).a_trsize +  \
32                         (x).a_drsize)
33
34/* Where does text segment go in memory after being loaded? */
35#define N_TXTADDR(x)    (unsigned long)(((N_MAGIC(x) == ZMAGIC) &&      \
36	                 ((x).a_entry < SPARC_PGSIZE)) ?   		\
37                          0 : SPARC_PGSIZE)
38
39/* And same for the data segment.. */
40#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ?         \
41                      (N_TXTADDR(x) + (x).a_text)  \
42                       : (unsigned long)(_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
43
44#define N_TRSIZE(a)	((a).a_trsize)
45#define N_DRSIZE(a)	((a).a_drsize)
46#define N_SYMSIZE(a)	((a).a_syms)
47
48#ifndef __ASSEMBLY__
49
50/*
51 * Sparc relocation types
52 */
53enum reloc_type
54{
55	RELOC_8,
56	RELOC_16,
57	RELOC_32,	/* simplest relocs */
58	RELOC_DISP8,
59	RELOC_DISP16,
60	RELOC_DISP32,	/* Disp's (pc-rel) */
61	RELOC_WDISP30,
62	RELOC_WDISP22,  /* SR word disp's */
63	RELOC_HI22,
64	RELOC_22,	/* SR 22-bit relocs */
65	RELOC_13,
66	RELOC_LO10,	/* SR 13&10-bit relocs */
67	RELOC_SFA_BASE,
68	RELOC_SFA_OFF13, /* SR S.F.A. relocs */
69	RELOC_BASE10,
70	RELOC_BASE13,
71	RELOC_BASE22,	/* base_relative pic */
72	RELOC_PC10,
73	RELOC_PC22,	/* special pc-rel pic */
74	RELOC_JMP_TBL,	/* jmp_tbl_rel in pic */
75	RELOC_SEGOFF16,	/* ShLib offset-in-seg */
76	RELOC_GLOB_DAT,
77	RELOC_JMP_SLOT,
78	RELOC_RELATIVE 	/* rtld relocs */
79};
80
81/*
82 * Format of a relocation datum.
83 */
84struct relocation_info /* used when header.a_machtype == M_SPARC */
85{
86        unsigned int    r_address;  /* relocation addr */
87        unsigned int    r_index:24; /* segment index or symbol index */
88        unsigned int    r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
89        int             r_pad:2;    /* <unused> */
90        enum reloc_type r_type:5;   /* type of relocation to perform */
91        int             r_addend;   /* addend for relocation value */
92};
93
94#define N_RELOCATION_INFO_DECLARED 1
95
96#ifdef __KERNEL__
97
98#define STACK_TOP (current->thread.flags & SPARC_FLAG_32BIT ? 0xf0000000 : 0x80000000000L)
99
100#endif
101
102#endif /* !(__ASSEMBLY__) */
103
104#endif /* !(__SPARC64_A_OUT_H__) */
105