bjoernager/rust
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Add codegen option for branch protection and pointer authentication on AArch64

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The branch-protection codegen option enables the use of hint-space pointer
authentication code for AArch64 targets
This commit is contained in:
James McGregor 2021-07-13 12:14:26 +01:00 • committed by Jamie Cunliffe
parent 2446a21595
commit 837cc1687f
12 changed files with 266 additions and 7 deletions
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31
compiler/rustc_session/src/config.rs
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@ -842,6 +842,30 @@ impl Passes {
}
}
#[derive(Clone, Copy, Hash, Debug, PartialEq)]
pub enum PAuthKey {
A,
B,
}
#[derive(Clone, Copy, Hash, Debug, PartialEq)]
pub struct PacRet {
pub leaf: bool,
pub key: PAuthKey,
}
#[derive(Clone, Copy, Hash, Debug, PartialEq)]
pub struct BranchProtection {
pub bti: bool,
pub pac_ret: Option<PacRet>,
}
impl Default for BranchProtection {
fn default() -> Self {
BranchProtection { bti: false, pac_ret: None }
}
}
pub const fn default_lib_output() -> CrateType {
CrateType::Rlib
}
@ -2487,9 +2511,9 @@ impl PpMode {
crate mod dep_tracking {
use super::LdImpl;
use super::{
CFGuard, CrateType, DebugInfo, ErrorOutputType, InstrumentCoverage, LinkerPluginLto,
LocationDetail, LtoCli, OptLevel, OutputType, OutputTypes, Passes, SourceFileHashAlgorithm,
SwitchWithOptPath, SymbolManglingVersion, TrimmedDefPaths,
BranchProtection, CFGuard, CrateType, DebugInfo, ErrorOutputType, InstrumentCoverage,
LinkerPluginLto, LocationDetail, LtoCli, OptLevel, OutputType, OutputTypes, Passes,
SourceFileHashAlgorithm, SwitchWithOptPath, SymbolManglingVersion, TrimmedDefPaths,
};
use crate::lint;
use crate::options::WasiExecModel;
@ -2583,6 +2607,7 @@ crate mod dep_tracking {
OutputType,
RealFileName,
LocationDetail,
BranchProtection,
);
impl<T1, T2> DepTrackingHash for (T1, T2)