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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__
5 #define SPARC_PGSIZE 0x2000 /* Thanks to the sun4 architecture... */
6 #define SEGMENT_SIZE SPARC_PGSIZE /* whee... */
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
;
22 /* Where in the file does the text information begin? */
23 #define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
25 /* Where do the Symbols start? */
26 #define N_SYMOFF(x) (N_TXTOFF(x) + (x).a_text + \
27 (x).a_data + (x).a_trsize + \
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)) ? \
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))))
40 #define N_TRSIZE(a) ((a).a_trsize)
41 #define N_DRSIZE(a) ((a).a_drsize)
42 #define N_SYMSIZE(a) ((a).a_syms)
45 * Sparc relocation types
51 RELOC_32
, /* simplest relocs */
54 RELOC_DISP32
, /* Disp's (pc-rel) */
56 RELOC_WDISP22
, /* SR word disp's */
58 RELOC_22
, /* SR 22-bit relocs */
60 RELOC_LO10
, /* SR 13&10-bit relocs */
62 RELOC_SFA_OFF13
, /* SR S.F.A. relocs */
65 RELOC_BASE22
, /* base_relative pic */
67 RELOC_PC22
, /* special pc-rel pic */
68 RELOC_JMP_TBL
, /* jmp_tbl_rel in pic */
69 RELOC_SEGOFF16
, /* ShLib offset-in-seg */
72 RELOC_RELATIVE
/* rtld relocs */
76 * Format of a relocation datum.
78 struct relocation_info
/* used when header.a_machtype == M_SPARC */
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 */
88 #define N_RELOCATION_INFO_DECLARED 1
94 #define STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
96 #endif /* __KERNEL__ */
98 #endif /* __SPARC_A_OUT_H__ */