This series of patches is mainly used to support the control flow integrity protection of the linux kernel [1], which is similar to -fsanitize=kcfi in clang 16.0 [2,3]. I hope that this feature will also support user-mode CFI in the future (at least for developers who can recompile the runtime), so I use -fsanitize=cfi as a compilation option here. Any suggestion please let me know :). Thanks, Dan. [1] https://lore.kernel.org/all/20220908215504.3686827-1-samitolvanen@xxxxxxxxxx/ [2] https://clang.llvm.org/docs/ControlFlowIntegrity.html [3] https://reviews.llvm.org/D119296 Dan Li (3): [PR102768] flag-types.h (enum sanitize_code): Extend sanitize_code to 64 bits to support more features [PR102768] Support CFI: Add new pass for Control Flow Integrity [PR102768] aarch64: Add support for Control Flow Integrity Signed-off-by: Dan Li <ashimida.1990@xxxxxxxxx> --- gcc/Makefile.in | 1 + gcc/asan.h | 4 +- gcc/c-family/c-attribs.cc | 10 +- gcc/c-family/c-common.h | 2 +- gcc/c/c-parser.cc | 4 +- gcc/cgraphunit.cc | 34 +++ gcc/common.opt | 4 +- gcc/config/aarch64/aarch64.cc | 106 ++++++++ gcc/cp/typeck.cc | 2 +- gcc/doc/invoke.texi | 35 +++ gcc/doc/passes.texi | 10 + gcc/doc/tm.texi | 27 +++ gcc/doc/tm.texi.in | 8 + gcc/dwarf2asm.cc | 2 +- gcc/flag-types.h | 67 ++--- gcc/opt-suggestions.cc | 2 +- gcc/opts.cc | 26 +- gcc/opts.h | 8 +- gcc/output.h | 3 + gcc/passes.def | 1 + gcc/target.def | 39 +++ .../aarch64/control_flow_integrity_1.c | 14 ++ .../aarch64/control_flow_integrity_2.c | 25 ++ .../aarch64/control_flow_integrity_3.c | 23 ++ gcc/toplev.cc | 4 + gcc/tree-cfg.cc | 2 +- gcc/tree-cfi.cc | 229 ++++++++++++++++++ gcc/tree-pass.h | 1 + gcc/tree.cc | 144 +++++++++++ gcc/tree.h | 1 + gcc/varasm.cc | 29 +++ 31 files changed, 803 insertions(+), 64 deletions(-) create mode 100644 gcc/testsuite/gcc.target/aarch64/control_flow_integrity_1.c create mode 100644 gcc/testsuite/gcc.target/aarch64/control_flow_integrity_2.c create mode 100644 gcc/testsuite/gcc.target/aarch64/control_flow_integrity_3.c create mode 100644 gcc/tree-cfi.cc -- 2.17.1
