| // This is a hack to access CFI interface that Android has in libdl.so on |
| // device, but not in the NDK. |
| #include <dlfcn.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| |
| typedef void (*cfi_slowpath_ty)(uint64_t, void *); |
| typedef void (*cfi_slowpath_diag_ty)(uint64_t, void *, void *); |
| |
| static cfi_slowpath_ty cfi_slowpath; |
| static cfi_slowpath_diag_ty cfi_slowpath_diag; |
| |
| __attribute__((constructor(0), no_sanitize("cfi"))) static void init() { |
| cfi_slowpath = (cfi_slowpath_ty)dlsym(RTLD_NEXT, "__cfi_slowpath"); |
| cfi_slowpath_diag = |
| (cfi_slowpath_diag_ty)dlsym(RTLD_NEXT, "__cfi_slowpath_diag"); |
| if (!cfi_slowpath || !cfi_slowpath_diag) abort(); |
| } |
| |
| extern "C" { |
| __attribute__((visibility("hidden"), no_sanitize("cfi"))) void __cfi_slowpath( |
| uint64_t Type, void *Addr) { |
| cfi_slowpath(Type, Addr); |
| } |
| |
| __attribute__((visibility("hidden"), no_sanitize("cfi"))) void |
| __cfi_slowpath_diag(uint64_t Type, void *Addr, void *Diag) { |
| cfi_slowpath_diag(Type, Addr, Diag); |
| } |
| } |