[PATCH] D51418: [AArch64] Enable return address signing for static ctors
Oliver Stannard via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Thu Sep 13 03:29:14 PDT 2018
This revision was automatically updated to reflect the committed changes.
Closed by commit rC342126: [AArch64] Enable return address signing for static ctors (authored by olista01, committed by ).
Herald added a subscriber: cfe-commits.
Repository:
rC Clang
https://reviews.llvm.org/D51418
Files:
lib/CodeGen/CGDeclCXX.cpp
test/CodeGenCXX/aarch64-sign-return-address-static-ctor.cpp
Index: test/CodeGenCXX/aarch64-sign-return-address-static-ctor.cpp
===================================================================
--- test/CodeGenCXX/aarch64-sign-return-address-static-ctor.cpp
+++ test/CodeGenCXX/aarch64-sign-return-address-static-ctor.cpp
@@ -0,0 +1,21 @@
+// RUN: %clang -target aarch64-arm-none-eabi -S -emit-llvm -o - -msign-return-address=none %s | \
+// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NONE
+// RUN: %clang -target aarch64-arm-none-eabi -S -emit-llvm -o - -msign-return-address=non-leaf %s | \
+// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-PARTIAL
+// RUN: %clang -target aarch64-arm-none-eabi -S -emit-llvm -o - -msign-return-address=all %s | \
+// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ALL
+
+struct Foo {
+ Foo() {}
+ ~Foo() {}
+};
+
+Foo f;
+
+// CHECK: @llvm.global_ctors {{.*}}i32 65535, void ()* @[[CTOR_FN:.*]], i8* null
+
+// CHECK: @[[CTOR_FN]]() #[[ATTR:[0-9]*]]
+
+// CHECK-NONE-NOT: attributes #[[ATTR]] = { {{.*}} "sign-return-address"={{.*}} }}
+// CHECK-PARTIAL: attributes #[[ATTR]] = { {{.*}} "sign-return-address"="non-leaf" {{.*}}}
+// CHECK-ALL: attributes #[[ATTR]] = { {{.*}} "sign-return-address"="all" {{.*}} }
Index: lib/CodeGen/CGDeclCXX.cpp
===================================================================
--- lib/CodeGen/CGDeclCXX.cpp
+++ lib/CodeGen/CGDeclCXX.cpp
@@ -359,6 +359,12 @@
!isInSanitizerBlacklist(SanitizerKind::ShadowCallStack, Fn, Loc))
Fn->addFnAttr(llvm::Attribute::ShadowCallStack);
+ auto RASignKind = getCodeGenOpts().getSignReturnAddress();
+ if (RASignKind != CodeGenOptions::SignReturnAddressScope::None)
+ Fn->addFnAttr("sign-return-address",
+ RASignKind == CodeGenOptions::SignReturnAddressScope::All
+ ? "all"
+ : "non-leaf");
return Fn;
}
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