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1.1 root 1: /* $Id: a.out.h,v 1.8 2002/02/09 19:49:31 davem Exp $ */
2: #ifndef __SPARC64_A_OUT_H__
3: #define __SPARC64_A_OUT_H__
4:
5: #define SPARC_PGSIZE 0x2000 /* Thanks to the sun4 architecture... */
6: #define SEGMENT_SIZE SPARC_PGSIZE /* whee... */
7:
8: #ifndef __ASSEMBLY__
9:
10: struct exec {
11: unsigned char a_dynamic:1; /* A __DYNAMIC is in this image */
12: unsigned char a_toolversion:7;
13: unsigned char a_machtype;
14: unsigned short a_info;
15: unsigned int a_text; /* length of text, in bytes */
16: unsigned int a_data; /* length of data, in bytes */
17: unsigned int a_bss; /* length of bss, in bytes */
18: unsigned int a_syms; /* length of symbol table, in bytes */
19: unsigned int a_entry; /* where program begins */
20: unsigned int a_trsize;
21: unsigned int a_drsize;
22: };
23:
24: #endif /* !__ASSEMBLY__ */
25:
26: /* Where in the file does the text information begin? */
27: #define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
28:
29: /* Where do the Symbols start? */
30: #define N_SYMOFF(x) (N_TXTOFF(x) + (x).a_text + \
31: (x).a_data + (x).a_trsize + \
32: (x).a_drsize)
33:
34: /* Where does text segment go in memory after being loaded? */
35: #define N_TXTADDR(x) (unsigned long)(((N_MAGIC(x) == ZMAGIC) && \
36: ((x).a_entry < SPARC_PGSIZE)) ? \
37: 0 : SPARC_PGSIZE)
38:
39: /* And same for the data segment.. */
40: #define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ? \
41: (N_TXTADDR(x) + (x).a_text) \
42: : (unsigned long)(_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
43:
44: #define N_TRSIZE(a) ((a).a_trsize)
45: #define N_DRSIZE(a) ((a).a_drsize)
46: #define N_SYMSIZE(a) ((a).a_syms)
47:
48: #ifndef __ASSEMBLY__
49:
50: /*
51: * Sparc relocation types
52: */
53: enum reloc_type
54: {
55: RELOC_8,
56: RELOC_16,
57: RELOC_32, /* simplest relocs */
58: RELOC_DISP8,
59: RELOC_DISP16,
60: RELOC_DISP32, /* Disp's (pc-rel) */
61: RELOC_WDISP30,
62: RELOC_WDISP22, /* SR word disp's */
63: RELOC_HI22,
64: RELOC_22, /* SR 22-bit relocs */
65: RELOC_13,
66: RELOC_LO10, /* SR 13&10-bit relocs */
67: RELOC_SFA_BASE,
68: RELOC_SFA_OFF13, /* SR S.F.A. relocs */
69: RELOC_BASE10,
70: RELOC_BASE13,
71: RELOC_BASE22, /* base_relative pic */
72: RELOC_PC10,
73: RELOC_PC22, /* special pc-rel pic */
74: RELOC_JMP_TBL, /* jmp_tbl_rel in pic */
75: RELOC_SEGOFF16, /* ShLib offset-in-seg */
76: RELOC_GLOB_DAT,
77: RELOC_JMP_SLOT,
78: RELOC_RELATIVE /* rtld relocs */
79: };
80:
81: /*
82: * Format of a relocation datum.
83: */
84: struct relocation_info /* used when header.a_machtype == M_SPARC */
85: {
86: unsigned int r_address; /* relocation addr */
87: unsigned int r_index:24; /* segment index or symbol index */
88: unsigned int r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
89: int r_pad:2; /* <unused> */
90: enum reloc_type r_type:5; /* type of relocation to perform */
91: int r_addend; /* addend for relocation value */
92: };
93:
94: #define N_RELOCATION_INFO_DECLARED 1
95:
96: #ifdef __KERNEL__
97:
98: #define STACK_TOP32 ((1UL << 32UL) - PAGE_SIZE)
99: #define STACK_TOP64 (0x0000080000000000UL - (1UL << 32UL))
100:
101: #define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
102: STACK_TOP32 : STACK_TOP64)
103:
104: #endif
105:
106: #endif /* !(__ASSEMBLY__) */
107:
108: #endif /* !(__SPARC64_A_OUT_H__) */
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