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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
use core::fmt::Debug;
use core::{iter, slice, str};
use crate::elf;
use crate::endian::{Endianness, U32Bytes};
use crate::read::{self, ComdatKind, ObjectComdat, ReadError, ReadRef, SectionIndex, SymbolIndex};
use super::{ElfFile, FileHeader, SectionHeader, Sym};
pub type ElfComdatIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
ElfComdatIterator<'data, 'file, elf::FileHeader32<Endian>, R>;
pub type ElfComdatIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
ElfComdatIterator<'data, 'file, elf::FileHeader64<Endian>, R>;
#[derive(Debug)]
pub struct ElfComdatIterator<'data, 'file, Elf, R = &'data [u8]>
where
'data: 'file,
Elf: FileHeader,
R: ReadRef<'data>,
{
pub(super) file: &'file ElfFile<'data, Elf, R>,
pub(super) iter: iter::Enumerate<slice::Iter<'data, Elf::SectionHeader>>,
}
impl<'data, 'file, Elf, R> Iterator for ElfComdatIterator<'data, 'file, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
type Item = ElfComdat<'data, 'file, Elf, R>;
fn next(&mut self) -> Option<Self::Item> {
while let Some((_index, section)) = self.iter.next() {
if let Some(comdat) = ElfComdat::parse(self.file, section) {
return Some(comdat);
}
}
None
}
}
pub type ElfComdat32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
ElfComdat<'data, 'file, elf::FileHeader32<Endian>, R>;
pub type ElfComdat64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
ElfComdat<'data, 'file, elf::FileHeader64<Endian>, R>;
#[derive(Debug)]
pub struct ElfComdat<'data, 'file, Elf, R = &'data [u8]>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
file: &'file ElfFile<'data, Elf, R>,
section: &'data Elf::SectionHeader,
sections: &'data [U32Bytes<Elf::Endian>],
}
impl<'data, 'file, Elf, R> ElfComdat<'data, 'file, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
fn parse(
file: &'file ElfFile<'data, Elf, R>,
section: &'data Elf::SectionHeader,
) -> Option<ElfComdat<'data, 'file, Elf, R>> {
let (flag, sections) = section.group(file.endian, file.data).ok()??;
if flag != elf::GRP_COMDAT {
return None;
}
Some(ElfComdat {
file,
section,
sections,
})
}
}
impl<'data, 'file, Elf, R> read::private::Sealed for ElfComdat<'data, 'file, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
}
impl<'data, 'file, Elf, R> ObjectComdat<'data> for ElfComdat<'data, 'file, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
type SectionIterator = ElfComdatSectionIterator<'data, 'file, Elf, R>;
#[inline]
fn kind(&self) -> ComdatKind {
ComdatKind::Any
}
#[inline]
fn symbol(&self) -> SymbolIndex {
SymbolIndex(self.section.sh_info(self.file.endian) as usize)
}
fn name_bytes(&self) -> read::Result<&[u8]> {
let index = self.section.sh_info(self.file.endian) as usize;
let symbol = self.file.symbols.symbol(index)?;
symbol.name(self.file.endian, self.file.symbols.strings())
}
fn name(&self) -> read::Result<&str> {
let name = self.name_bytes()?;
str::from_utf8(name)
.ok()
.read_error("Non UTF-8 ELF COMDAT name")
}
fn sections(&self) -> Self::SectionIterator {
ElfComdatSectionIterator {
file: self.file,
sections: self.sections.iter(),
}
}
}
pub type ElfComdatSectionIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
ElfComdatSectionIterator<'data, 'file, elf::FileHeader32<Endian>, R>;
pub type ElfComdatSectionIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
ElfComdatSectionIterator<'data, 'file, elf::FileHeader64<Endian>, R>;
#[derive(Debug)]
pub struct ElfComdatSectionIterator<'data, 'file, Elf, R = &'data [u8]>
where
'data: 'file,
Elf: FileHeader,
R: ReadRef<'data>,
{
file: &'file ElfFile<'data, Elf, R>,
sections: slice::Iter<'data, U32Bytes<Elf::Endian>>,
}
impl<'data, 'file, Elf, R> Iterator for ElfComdatSectionIterator<'data, 'file, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
type Item = SectionIndex;
fn next(&mut self) -> Option<Self::Item> {
let index = self.sections.next()?;
Some(SectionIndex(index.get(self.file.endian) as usize))
}
}