================
@@ -58,6 +58,55 @@ constexpr unsigned PointerAuthKeyNone = -1;
/// the vtable type discriminator for classes derived from std::type_info.
constexpr uint16_t StdTypeInfoVTablePointerConstantDiscrimination = 0xB1EA;
+enum class PointerAuthenticationMode : unsigned {
+ None,
+ Strip,
+ SignAndStrip,
+ SignAndAuth
+};
+
+// For reviewers: Where should I actually put this? We don't really have any
+// pre-CG pointer auth specific impl files. I'm almost thinking that we should
+// have Basic/PointerAuth.cpp or something?
+
+static constexpr llvm::StringLiteral PointerAuthenticationOptionStrip =
"strip";
+static constexpr llvm::StringLiteral PointerAuthenticationOptionSignAndStrip =
+ "sign-and-strip";
+static constexpr llvm::StringLiteral PointerAuthenticationOptionSignAndAuth =
+ "sign-and-auth";
+static constexpr llvm::StringLiteral PointerAuthenticationOptionIsaPointer =
+ "isa-pointer";
+static constexpr llvm::StringLiteral
+ PointerAuthenticationOptionAuthenticatesNullValues =
+ "authenticates-null-values";
+
+inline std::optional<PointerAuthenticationMode>
+authenticationModeFromString(StringRef Option) {
+ return llvm::StringSwitch<std::optional<PointerAuthenticationMode>>(Option)
+ .Case(PointerAuthenticationOptionStrip, PointerAuthenticationMode::Strip)
+ .Case(PointerAuthenticationOptionSignAndStrip,
+ PointerAuthenticationMode::SignAndStrip)
+ .Case(PointerAuthenticationOptionSignAndAuth,
+ PointerAuthenticationMode::SignAndAuth)
+ .Default(std::nullopt);
+}
+
+inline StringRef stringForAuthenticationMode(PointerAuthenticationMode Mode) {
+ switch (Mode) {
+ case clang::PointerAuthenticationMode::Strip:
+ return PointerAuthenticationOptionStrip;
+ case clang::PointerAuthenticationMode::SignAndStrip:
+ return PointerAuthenticationOptionSignAndStrip;
+ case PointerAuthenticationMode::None:
+ // llvm_unreachable means that this path is assumed unreachable so the
+ // branch can be removed which is much worse that just defaulting to
+ // sign+auth
+ assert(0 && "We should not be stringify disabled pointer auth qualifiers");
----------------
cor3ntin wrote:
```suggestion
assert(false && "We should not be stringify disabled pointer auth
qualifiers");
```
https://github.com/llvm/llvm-project/pull/136828
_______________________________________________
cfe-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
