1 /* $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
8 struct 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 */
47 enum 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 */
78 struct 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
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