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004aa15b47
This commit adds cross-language LLVM Control Flow Integrity (CFI) support to the Rust compiler by adding the `-Zsanitizer-cfi-normalize-integers` option to be used with Clang `-fsanitize-cfi-icall-normalize-integers` for normalizing integer types (see https://reviews.llvm.org/D139395). It provides forward-edge control flow protection for C or C++ and Rust -compiled code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code share the same virtual address space). For more information about LLVM CFI and cross-language LLVM CFI support for the Rust compiler, see design document in the tracking issue #89653. Cross-language LLVM CFI can be enabled with -Zsanitizer=cfi and -Zsanitizer-cfi-normalize-integers, and requires proper (i.e., non-rustc) LTO (i.e., -Clinker-plugin-lto).
45 lines
1.6 KiB
Rust
45 lines
1.6 KiB
Rust
// Verifies that KCFI type metadata for functions are emitted.
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//
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// revisions: aarch64 x86_64
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// [aarch64] compile-flags: --target aarch64-unknown-none
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// [aarch64] needs-llvm-components: aarch64
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// [x86_64] compile-flags: --target x86_64-unknown-none
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// [x86_64] needs-llvm-components:
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// compile-flags: -Cno-prepopulate-passes -Zsanitizer=kcfi -Copt-level=0
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#![crate_type="lib"]
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#![feature(no_core, lang_items)]
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#![no_core]
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#[lang="sized"]
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trait Sized { }
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#[lang="copy"]
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trait Copy { }
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impl Copy for i32 {}
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pub fn foo(f: fn(i32) -> i32, arg: i32) -> i32 {
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// CHECK-LABEL: define{{.*}}foo
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// CHECK-SAME: {{.*}}!{{<unknown kind #36>|kcfi_type}} ![[TYPE1:[0-9]+]]
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// CHECK: {{%.+}} = call {{(noundef )*}}i32 %f(i32 {{(noundef )*}}%arg){{.*}}[ "kcfi"(i32 -1666898348) ]
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f(arg)
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}
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pub fn bar(f: fn(i32, i32) -> i32, arg1: i32, arg2: i32) -> i32 {
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// CHECK-LABEL: define{{.*}}bar
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// CHECK-SAME: {{.*}}!{{<unknown kind #36>|kcfi_type}} ![[TYPE2:[0-9]+]]
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// CHECK: {{%.+}} = call {{(noundef )*}}i32 %f(i32 {{(noundef )*}}%arg1, i32 {{(noundef )*}}%arg2){{.*}}[ "kcfi"(i32 -1789026986) ]
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f(arg1, arg2)
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}
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pub fn baz(f: fn(i32, i32, i32) -> i32, arg1: i32, arg2: i32, arg3: i32) -> i32 {
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// CHECK-LABEL: define{{.*}}baz
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// CHECK-SAME: {{.*}}!{{<unknown kind #36>|kcfi_type}} ![[TYPE3:[0-9]+]]
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// CHECK: {{%.+}} = call {{(noundef )*}}i32 %f(i32 {{(noundef )*}}%arg1, i32 {{(noundef )*}}%arg2, i32 {{(noundef )*}}%arg3){{.*}}[ "kcfi"(i32 1248878270) ]
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f(arg1, arg2, arg3)
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}
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// CHECK: ![[TYPE1]] = !{i32 653723426}
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// CHECK: ![[TYPE2]] = !{i32 412174924}
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// CHECK: ![[TYPE3]] = !{i32 -636668840}
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