c5bc368cfe
* cranelift: Implement COFF TLS Relocations * cranelift: Emit SecRel relocations * cranelift: Handle _tls_index symbol in backend
48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
use core::fmt;
|
|
use core::str::FromStr;
|
|
#[cfg(feature = "enable-serde")]
|
|
use serde::{Deserialize, Serialize};
|
|
|
|
/// A well-known symbol.
|
|
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
|
|
#[cfg_attr(feature = "enable-serde", derive(Serialize, Deserialize))]
|
|
pub enum KnownSymbol {
|
|
/// ELF well-known linker symbol _GLOBAL_OFFSET_TABLE_
|
|
ElfGlobalOffsetTable,
|
|
/// TLS index symbol for the current thread.
|
|
/// Used in COFF/PE file formats.
|
|
CoffTlsIndex,
|
|
}
|
|
|
|
impl fmt::Display for KnownSymbol {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
fmt::Debug::fmt(self, f)
|
|
}
|
|
}
|
|
|
|
impl FromStr for KnownSymbol {
|
|
type Err = ();
|
|
|
|
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
match s {
|
|
"ElfGlobalOffsetTable" => Ok(Self::ElfGlobalOffsetTable),
|
|
"CoffTlsIndex" => Ok(Self::CoffTlsIndex),
|
|
_ => Err(()),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn parsing() {
|
|
assert_eq!(
|
|
"ElfGlobalOffsetTable".parse(),
|
|
Ok(KnownSymbol::ElfGlobalOffsetTable)
|
|
);
|
|
assert_eq!("CoffTlsIndex".parse(), Ok(KnownSymbol::CoffTlsIndex));
|
|
}
|
|
}
|