| //===-- asan_dll_thunk.cc -------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of AddressSanitizer, an address sanity checker. |
| // |
| // This file defines a family of thunks that should be statically linked into |
| // the DLLs that have ASan instrumentation in order to delegate the calls to the |
| // shared runtime that lives in the main binary. |
| // See https://code.google.com/p/address-sanitizer/issues/detail?id=209 for the |
| // details. |
| //===----------------------------------------------------------------------===// |
| |
| // Only compile this code when buidling asan_dll_thunk.lib |
| // Using #ifdef rather than relying on Makefiles etc. |
| // simplifies the build procedure. |
| #ifdef ASAN_DLL_THUNK |
| |
| // ----------------- Helper functions and macros --------------------- {{{1 |
| extern "C" { |
| void *__stdcall GetModuleHandleA(const char *module_name); |
| void *__stdcall GetProcAddress(void *module, const char *proc_name); |
| void abort(); |
| } |
| |
| static void *getRealProcAddressOrDie(const char *name) { |
| void *ret = GetProcAddress(GetModuleHandleA(0), name); |
| if (!ret) |
| abort(); |
| return ret; |
| } |
| |
| #define WRAP_V_V(name) \ |
| extern "C" void name() { \ |
| typedef void (*fntype)(); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| fn(); \ |
| } |
| |
| #define WRAP_V_W(name) \ |
| extern "C" void name(void *arg) { \ |
| typedef void (*fntype)(void *arg); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| fn(arg); \ |
| } |
| |
| #define WRAP_V_WW(name) \ |
| extern "C" void name(void *arg1, void *arg2) { \ |
| typedef void (*fntype)(void *, void *); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| fn(arg1, arg2); \ |
| } |
| |
| #define WRAP_V_WWW(name) \ |
| extern "C" void name(void *arg1, void *arg2, void *arg3) { \ |
| typedef void *(*fntype)(void *, void *, void *); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| fn(arg1, arg2, arg3); \ |
| } |
| |
| #define WRAP_W_V(name) \ |
| extern "C" void *name() { \ |
| typedef void *(*fntype)(); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| return fn(); \ |
| } |
| |
| #define WRAP_W_W(name) \ |
| extern "C" void *name(void *arg) { \ |
| typedef void *(*fntype)(void *arg); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| return fn(arg); \ |
| } |
| |
| #define WRAP_W_WW(name) \ |
| extern "C" void *name(void *arg1, void *arg2) { \ |
| typedef void *(*fntype)(void *, void *); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| return fn(arg1, arg2); \ |
| } |
| |
| #define WRAP_W_WWW(name) \ |
| extern "C" void *name(void *arg1, void *arg2, void *arg3) { \ |
| typedef void *(*fntype)(void *, void *, void *); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| return fn(arg1, arg2, arg3); \ |
| } |
| |
| #define WRAP_W_WWWW(name) \ |
| extern "C" void *name(void *arg1, void *arg2, void *arg3, void *arg4) { \ |
| typedef void *(*fntype)(void *, void *, void *, void *); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| return fn(arg1, arg2, arg3, arg4); \ |
| } |
| |
| #define WRAP_W_WWWWW(name) \ |
| extern "C" void *name(void *arg1, void *arg2, void *arg3, void *arg4, \ |
| void *arg5) { \ |
| typedef void *(*fntype)(void *, void *, void *, void *, void *); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| return fn(arg1, arg2, arg3, arg4, arg5); \ |
| } |
| |
| #define WRAP_W_WWWWWW(name) \ |
| extern "C" void *name(void *arg1, void *arg2, void *arg3, void *arg4, \ |
| void *arg5, void *arg6) { \ |
| typedef void *(*fntype)(void *, void *, void *, void *, void *, void *); \ |
| static fntype fn = (fntype)getRealProcAddressOrDie(#name); \ |
| return fn(arg1, arg2, arg3, arg4, arg5, arg6); \ |
| } |
| // }}} |
| |
| // ----------------- ASan own interface functions -------------------- |
| WRAP_W_V(__asan_should_detect_stack_use_after_return) |
| |
| extern "C" { |
| int __asan_option_detect_stack_use_after_return; |
| |
| // Manually wrap __asan_init as we need to initialize |
| // __asan_option_detect_stack_use_after_return afterwards. |
| void __asan_init_v3() { |
| typedef void (*fntype)(); |
| static fntype fn = (fntype)getRealProcAddressOrDie("__asan_init_v3"); |
| fn(); |
| __asan_option_detect_stack_use_after_return = |
| (__asan_should_detect_stack_use_after_return() != 0); |
| } |
| } |
| |
| WRAP_V_W(__asan_report_store1) |
| WRAP_V_W(__asan_report_store2) |
| WRAP_V_W(__asan_report_store4) |
| WRAP_V_W(__asan_report_store8) |
| WRAP_V_W(__asan_report_store16) |
| WRAP_V_WW(__asan_report_store_n) |
| |
| WRAP_V_W(__asan_report_load1) |
| WRAP_V_W(__asan_report_load2) |
| WRAP_V_W(__asan_report_load4) |
| WRAP_V_W(__asan_report_load8) |
| WRAP_V_W(__asan_report_load16) |
| WRAP_V_WW(__asan_report_load_n) |
| |
| WRAP_V_WW(__asan_register_globals) |
| WRAP_V_WW(__asan_unregister_globals) |
| |
| WRAP_W_WW(__asan_stack_malloc_0) |
| WRAP_W_WW(__asan_stack_malloc_1) |
| WRAP_W_WW(__asan_stack_malloc_2) |
| WRAP_W_WW(__asan_stack_malloc_3) |
| WRAP_W_WW(__asan_stack_malloc_4) |
| WRAP_W_WW(__asan_stack_malloc_5) |
| WRAP_W_WW(__asan_stack_malloc_6) |
| WRAP_W_WW(__asan_stack_malloc_7) |
| WRAP_W_WW(__asan_stack_malloc_8) |
| WRAP_W_WW(__asan_stack_malloc_9) |
| WRAP_W_WW(__asan_stack_malloc_10) |
| |
| WRAP_V_WWW(__asan_stack_free_0) |
| WRAP_V_WWW(__asan_stack_free_1) |
| WRAP_V_WWW(__asan_stack_free_2) |
| WRAP_V_WWW(__asan_stack_free_4) |
| WRAP_V_WWW(__asan_stack_free_5) |
| WRAP_V_WWW(__asan_stack_free_6) |
| WRAP_V_WWW(__asan_stack_free_7) |
| WRAP_V_WWW(__asan_stack_free_8) |
| WRAP_V_WWW(__asan_stack_free_9) |
| WRAP_V_WWW(__asan_stack_free_10) |
| |
| // TODO(timurrrr): Add more interface functions on the as-needed basis. |
| |
| // ----------------- Memory allocation functions --------------------- |
| WRAP_V_W(free) |
| WRAP_V_WW(_free_dbg) |
| |
| WRAP_W_W(malloc) |
| WRAP_W_WWWW(_malloc_dbg) |
| |
| WRAP_W_WW(calloc) |
| WRAP_W_WWWWW(_calloc_dbg) |
| WRAP_W_WWW(_calloc_impl) |
| |
| WRAP_W_WW(realloc) |
| WRAP_W_WWW(_realloc_dbg) |
| WRAP_W_WWW(_recalloc) |
| |
| WRAP_W_W(_msize) |
| |
| // TODO(timurrrr): Do we need to add _Crt* stuff here? (see asan_malloc_win.cc). |
| |
| #endif // ASAN_DLL_THUNK |