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| 1 | // This is a hack to access CFI interface that Android has in libdl.so on |
|---|---|
| 2 | // device, but not in the NDK. |
| 3 | #include <dlfcn.h> |
| 4 | #include <stdint.h> |
| 5 | #include <stdlib.h> |
| 6 | |
| 7 | typedef void (*cfi_slowpath_ty)(uint64_t, void *); |
| 8 | typedef void (*cfi_slowpath_diag_ty)(uint64_t, void *, void *); |
| 9 | |
| 10 | static cfi_slowpath_ty cfi_slowpath; |
| 11 | static cfi_slowpath_diag_ty cfi_slowpath_diag; |
| 12 | |
| 13 | __attribute__((constructor(0), no_sanitize("cfi"))) static void init() { |
| 14 | cfi_slowpath = (cfi_slowpath_ty)dlsym(RTLD_NEXT, "__cfi_slowpath"); |
| 15 | cfi_slowpath_diag = |
| 16 | (cfi_slowpath_diag_ty)dlsym(RTLD_NEXT, "__cfi_slowpath_diag"); |
| 17 | if (!cfi_slowpath || !cfi_slowpath_diag) abort(); |
| 18 | } |
| 19 | |
| 20 | extern "C" { |
| 21 | __attribute__((visibility("hidden"), no_sanitize("cfi"))) void __cfi_slowpath( |
| 22 | uint64_t Type, void *Addr) { |
| 23 | cfi_slowpath(Type, Addr); |
| 24 | } |
| 25 | |
| 26 | __attribute__((visibility("hidden"), no_sanitize("cfi"))) void |
| 27 | __cfi_slowpath_diag(uint64_t Type, void *Addr, void *Diag) { |
| 28 | cfi_slowpath_diag(Type, Addr, Diag); |
| 29 | } |
| 30 | } |
| 31 |
Warning: This file is not a C or C++ file. It does not have highlighting.