1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* reloc_table.h
*
* DSP-BIOS Bridge driver support functions for TI OMAP processors.
*
* Copyright (C) 2005-2006 Texas Instruments, Inc.
*
* This package is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef _RELOC_TABLE_H_
#define _RELOC_TABLE_H_
/*
* Table of relocation operator properties
*/
#include <linux/types.h>
/* How does this relocation operation access the program image? */
#define ROP_N 0 /* does not access image */
#define ROP_R 1 /* read from image */
#define ROP_W 2 /* write to image */
#define ROP_RW 3 /* read from and write to image */
/* For program image access, what are the overflow rules for the bit field? */
/* Beware! Procedure repack depends on this encoding */
#define ROP_ANY 0 /* no overflow ever, just truncate the value */
#define ROP_SGN 1 /* signed field */
#define ROP_UNS 2 /* unsigned field */
#define ROP_MAX 3 /* allow maximum range of either signed or unsigned */
/* How does the relocation operation use the symbol reference */
#define ROP_IGN 0 /* no symbol is referenced */
#define ROP_LIT 0 /* use rp->UVAL literal field */
#define ROP_SYM 1 /* symbol value is used in relocation */
#define ROP_SYMD 2 /* delta value vs last link is used */
/* How does the reloc op use the stack? */
#define RSTK_N 0 /* Does not use */
#define RSTK_POP 1 /* Does a POP */
#define RSTK_UOP 2 /* Unary op, stack position unaffected */
#define RSTK_PSH 3 /* Does a push */
/*
* Computational actions performed by the dynamic loader
*/
enum dload_actions {
/* don't alter the current val (from stack or mem fetch) */
RACT_VAL,
/* set value to reference amount (from symbol reference) */
RACT_ASGN,
RACT_ADD, /* add reference to value */
RACT_PCR, /* add reference minus PC delta to value */
RACT_ADDISP, /* add reference plus R_DISP */
RACT_ASGPC, /* set value to section addr plus reference */
RACT_PLUS, /* stack + */
RACT_SUB, /* stack - */
RACT_NEG, /* stack unary - */
RACT_MPY, /* stack * */
RACT_DIV, /* stack / */
RACT_MOD, /* stack % */
RACT_SR, /* stack unsigned >> */
RACT_ASR, /* stack signed >> */
RACT_SL, /* stack << */
RACT_AND, /* stack & */
RACT_OR, /* stack | */
RACT_XOR, /* stack ^ */
RACT_NOT, /* stack ~ */
RACT_C6SECT, /* for C60 R_SECT op */
RACT_C6BASE, /* for C60 R_BASE op */
RACT_C6DSPL, /* for C60 scaled 15-bit displacement */
RACT_PCR23T /* for ARM Thumb long branch */
};
/*
* macros used to extract values
*/
#define RFV_POSN(aaa) ((aaa) & 0xF)
#define RFV_WIDTH(aaa) (((aaa) >> 4) & 0x3F)
#define RFV_ACTION(aaa) ((aaa) >> 10)
#define RFV_SIGN(iii) (((iii) >> 2) & 0x3)
#define RFV_SYM(iii) (((iii) >> 4) & 0x3)
#define RFV_STK(iii) (((iii) >> 6) & 0x3)
#define RFV_ACCS(iii) ((iii) & 0x3)
#if (TMS32060)
#define RFV_SCALE(iii) ((iii) >> 11)
#define RFV_BIGOFF(iii) (((iii) >> 8) & 0x7)
#else
#define RFV_BIGOFF(iii) ((iii) >> 8)
#endif
#endif /* _RELOC_TABLE_H_ */
|
