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
103
104
105
|
/*******************************************************************************
* Copyright (c) 2006, 2012 Wind River Systems, Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
* You may elect to redistribute this code under either of these licenses.
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
/*
* This module implements low-level functions for reading DWARF debug information.
*
* Functions in this module use exceptions to report errors, see exceptions.h
*/
#ifndef D_dwarfio
#define D_dwarfio
#include <tcf/config.h>
#if ENABLE_ELF
#include <tcf/services/tcf_elf.h>
typedef struct DIO_UnitDescriptor {
ELF_Section * mSection;
U2_T mVersion;
U1_T m64bit;
U1_T mAddressSize;
U8_T mUnitOffs;
U8_T mUnitSize;
U4_T mAbbrevTableOffs;
struct DIO_Abbreviation ** mAbbrevTable;
U4_T mAbbrevTableSize;
} DIO_UnitDescriptor;
extern U8_T dio_gEntryPos;
extern U8_T dio_gFormData;
extern size_t dio_gFormDataSize;
extern void * dio_gFormDataAddr;
extern ELF_Section * dio_gFormSection;
extern void dio_EnterSection(DIO_UnitDescriptor * Unit, ELF_Section * Section, U8_T Offset);
extern void dio_ExitSection(void);
extern void dio_Skip(I8_T Bytes);
extern void dio_SetPos(U8_T Pos);
extern void dio_Read(U1_T * Buf, U4_T Size);
extern U8_T dio_GetPos(void); /* Offset in the section */
extern U1_T * dio_GetDataPtr(void);
extern U1_T dio_ReadU1(void);
extern U2_T dio_ReadU2(void);
extern U4_T dio_ReadU4(void);
extern U8_T dio_ReadU8(void);
extern U4_T dio_ReadULEB128(void);
extern I4_T dio_ReadSLEB128(void);
extern U8_T dio_ReadU8LEB128(void);
extern I8_T dio_ReadS8LEB128(void);
/*
* Read link-time address value.
* Relocation tables are used if necessary to compute the address value.
* For a file that can be relocated at run-time, 's' is assigned a section that the address points to.
*/
extern U8_T dio_ReadAddressX(ELF_Section ** s, int Size);
extern U8_T dio_ReadAddress(ELF_Section ** s);
extern char * dio_ReadString(void);
extern void dio_ReadAttribute(U2_T Attr, U2_T Form);
typedef void (*DIO_EntryCallBack)(U2_T /* Tag */, U2_T /* Attr */, U2_T /* Form */);
/*
* CallBack is called before each DWARF entry with Atrr = 0 and Form != 0,
* then is is called for each entry attribute with appropriate Attr and Form values,
* and then called after the entry with Attr = 0 and Form = 0.
* This sequence is repeated for each entry in the debug info unit.
*/
extern void dio_ReadUnit(DIO_UnitDescriptor * Unit, DIO_EntryCallBack CallBack);
extern int dio_ReadEntry(DIO_EntryCallBack CallBack, U2_T Attr);
/* CallBack 'Form' value on unit entry: */
#define DWARF_ENTRY_NO_CHILDREN 2
#define DWARF_ENTRY_HAS_CHILDREN 3
extern void dio_LoadAbbrevTable(ELF_File * File);
extern void dio_ChkFlag(U2_T Form);
extern void dio_ChkRef(U2_T Form);
extern void dio_ChkAddr(U2_T Form);
extern void dio_ChkData(U2_T Form);
extern void dio_ChkBlock(U2_T Form, U1_T ** Buf, size_t * Size);
extern void dio_ChkString(U2_T Form);
#endif /* ENABLE_ELF */
#endif /* D_dwarfio */
|
