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Add cross-language LLVM CFI support to the Rust compiler

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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).
This commit is contained in:
Ramon de C Valle 2022-12-12 22:42:44 -08:00
parent fec9adcdbc
commit 004aa15b47
70 changed files with 1384 additions and 387 deletions
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4
compiler/rustc_interface/src/tests.rs
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@ -794,12 +794,16 @@ fn test_unstable_options_tracking_hash() {
tracked!(remap_cwd_prefix, Some(PathBuf::from("abc")));
tracked!(report_delayed_bugs, true);
tracked!(sanitizer, SanitizerSet::ADDRESS);
tracked!(sanitizer_cfi_canonical_jump_tables, None);
tracked!(sanitizer_cfi_generalize_pointers, Some(true));
tracked!(sanitizer_cfi_normalize_integers, Some(true));
tracked!(sanitizer_memory_track_origins, 2);
tracked!(sanitizer_recover, SanitizerSet::ADDRESS);
tracked!(saturating_float_casts, Some(true));
tracked!(share_generics, Some(true));
tracked!(show_span, Some(String::from("abc")));
tracked!(simulate_remapped_rust_src_base, Some(PathBuf::from("/rustc/abc")));
tracked!(split_lto_unit, Some(true));
tracked!(src_hash_algorithm, Some(SourceFileHashAlgorithm::Sha1));
tracked!(stack_protector, StackProtector::All);
tracked!(symbol_mangling_version, Some(SymbolManglingVersion::V0));