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