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1.1 root 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__ */
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