blob: e4e83eb0161ed7e490a5237653420197bd598286 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* $Id: a.out.h,v 1.13 2000/01/09 10:46:53 anton 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__ */