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).
32 lines
1.4 KiB
Rust
32 lines
1.4 KiB
Rust
// Verifies that generalized type metadata for functions are emitted.
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//
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// needs-sanitizer-cfi
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// compile-flags: -Clto -Cno-prepopulate-passes -Ctarget-feature=-crt-static -Zsanitizer=cfi -Zsanitizer-cfi-generalize-pointers
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#![crate_type="lib"]
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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: {{.*}}!type ![[TYPE1:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}}
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// CHECK: call i1 @llvm.type.test({{i8\*|ptr}} {{%f|%0}}, metadata !"_ZTSFu3i32S_E.generalized")
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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: {{.*}}!type ![[TYPE2:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}}
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// CHECK: call i1 @llvm.type.test({{i8\*|ptr}} {{%f|%0}}, metadata !"_ZTSFu3i32S_S_E.generalized")
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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: {{.*}}!type ![[TYPE3:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}}
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// CHECK: call i1 @llvm.type.test({{i8\*|ptr}} {{%f|%0}}, metadata !"_ZTSFu3i32S_S_S_E.generalized")
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f(arg1, arg2, arg3)
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}
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// CHECK: ![[TYPE1]] = !{i64 0, !"_ZTSFu3i32PKvS_E.generalized"}
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// CHECK: ![[TYPE2]] = !{i64 0, !"_ZTSFu3i32PKvS_S_E.generalized"}
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// CHECK: ![[TYPE3]] = !{i64 0, !"_ZTSFu3i32PKvS_S_S_E.generalized"}
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