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use crate::endian::EndianParse;
use crate::file::Class;
use crate::parse::{ParseAt, ParseError, ParsingTable};
pub type DynamicTable<'data, E> = ParsingTable<'data, E, Dyn>;
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Dyn {
pub d_tag: i64,
pub(super) d_un: u64,
}
impl Dyn {
pub fn d_val(self) -> u64 {
self.d_un
}
pub fn d_ptr(self) -> u64 {
self.d_un
}
}
impl ParseAt for Dyn {
fn parse_at<E: EndianParse>(
endian: E,
class: Class,
offset: &mut usize,
data: &[u8],
) -> Result<Self, ParseError> {
match class {
Class::ELF32 => Ok(Dyn {
d_tag: endian.parse_i32_at(offset, data)? as i64,
d_un: endian.parse_u32_at(offset, data)? as u64,
}),
Class::ELF64 => Ok(Dyn {
d_tag: endian.parse_i64_at(offset, data)?,
d_un: endian.parse_u64_at(offset, data)?,
}),
}
}
#[inline]
fn size_for(class: Class) -> usize {
match class {
Class::ELF32 => 8,
Class::ELF64 => 16,
}
}
}
#[cfg(test)]
mod parse_tests {
use super::*;
use crate::endian::{BigEndian, LittleEndian};
use crate::parse::{test_parse_for, test_parse_fuzz_too_short};
#[test]
fn parse_dyn32_lsb() {
test_parse_for(
LittleEndian,
Class::ELF32,
Dyn {
d_tag: 0x03020100,
d_un: 0x07060504,
},
);
}
#[test]
fn parse_dyn32_msb() {
test_parse_for(
BigEndian,
Class::ELF32,
Dyn {
d_tag: 0x00010203,
d_un: 0x04050607,
},
);
}
#[test]
fn parse_dyn64_lsb() {
test_parse_for(
LittleEndian,
Class::ELF64,
Dyn {
d_tag: 0x0706050403020100,
d_un: 0x0F0E0D0C0B0A0908,
},
);
}
#[test]
fn parse_dyn64_msb() {
test_parse_for(
BigEndian,
Class::ELF64,
Dyn {
d_tag: 0x0001020304050607,
d_un: 0x08090A0B0C0D0E0F,
},
);
}
#[test]
fn parse_dyn32_lsb_fuzz_too_short() {
test_parse_fuzz_too_short::<_, Dyn>(LittleEndian, Class::ELF32);
}
#[test]
fn parse_dyn32_msb_fuzz_too_short() {
test_parse_fuzz_too_short::<_, Dyn>(BigEndian, Class::ELF32);
}
#[test]
fn parse_dyn64_lsb_fuzz_too_short() {
test_parse_fuzz_too_short::<_, Dyn>(LittleEndian, Class::ELF64);
}
#[test]
fn parse_dyn64_msb_fuzz_too_short() {
test_parse_fuzz_too_short::<_, Dyn>(BigEndian, Class::ELF64);
}
}