1 //===-asan_abi.cpp - ASan Stable ABI---------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "asan_abi.h" 10 11 extern "C" { 12 // Functions concerning instrumented global variables: 13 void __asan_abi_register_image_globals(void) {} 14 void __asan_abi_unregister_image_globals(void) {} 15 void __asan_abi_register_elf_globals(bool *flag, void *start, void *stop) {} 16 void __asan_abi_unregister_elf_globals(bool *flag, void *start, void *stop) {} 17 void __asan_abi_register_globals(void *globals, size_t n) {} 18 void __asan_abi_unregister_globals(void *globals, size_t n) {} 19 20 // Functions concerning dynamic library initialization 21 void __asan_abi_before_dynamic_init(const char *module_name) {} 22 void __asan_abi_after_dynamic_init(void) {} 23 24 // Functions concerning block memory destinations 25 void *__asan_abi_memcpy(void *d, const void *s, size_t n) { return NULL; } 26 void *__asan_abi_memmove(void *d, const void *s, size_t n) { return NULL; } 27 void *__asan_abi_memset(void *p, int c, size_t n) { return NULL; } 28 29 // Functions concerning RTL startup and initialization 30 void __asan_abi_init(void) {} 31 void __asan_abi_handle_no_return(void) {} 32 33 // Functions concerning memory load and store reporting 34 void __asan_abi_report_load_n(void *p, size_t n, bool abort) {} 35 void __asan_abi_report_exp_load_n(void *p, size_t n, int exp, bool abort) {} 36 void __asan_abi_report_store_n(void *p, size_t n, bool abort) {} 37 void __asan_abi_report_exp_store_n(void *p, size_t n, int exp, bool abort) {} 38 39 // Functions concerning memory load and store 40 void __asan_abi_load_n(void *p, size_t n, bool abort) {} 41 void __asan_abi_exp_load_n(void *p, size_t n, int exp, bool abort) {} 42 void __asan_abi_store_n(void *p, size_t n, bool abort) {} 43 void __asan_abi_exp_store_n(void *p, size_t n, int exp, bool abort) {} 44 45 // Functions concerning query about whether memory is poisoned 46 int __asan_abi_address_is_poisoned(void const volatile *p) { return 0; } 47 void *__asan_abi_region_is_poisoned(void const volatile *p, size_t size) { 48 return NULL; 49 } 50 51 // Functions concerning the poisoning of memory 52 void __asan_abi_poison_memory_region(void const volatile *p, size_t n) {} 53 void __asan_abi_unpoison_memory_region(void const volatile *p, size_t n) {} 54 55 // Functions concerning the partial poisoning of memory 56 void __asan_abi_set_shadow_xx_n(void *p, unsigned char xx, size_t n) {} 57 58 // Functions concerning stack poisoning 59 void __asan_abi_poison_stack_memory(void *p, size_t n) {} 60 void __asan_abi_unpoison_stack_memory(void *p, size_t n) {} 61 62 // Functions concerning redzone poisoning 63 void __asan_abi_poison_intra_object_redzone(void *p, size_t size) {} 64 void __asan_abi_unpoison_intra_object_redzone(void *p, size_t size) {} 65 66 // Functions concerning array cookie poisoning 67 void __asan_abi_poison_cxx_array_cookie(void *p) {} 68 void *__asan_abi_load_cxx_array_cookie(void **p) { return NULL; } 69 70 // Functions concerning fake stacks 71 void *__asan_abi_get_current_fake_stack(void) { return NULL; } 72 void *__asan_abi_addr_is_in_fake_stack(void *fake_stack, void *addr, void **beg, 73 void **end) { 74 return NULL; 75 } 76 77 // Functions concerning poisoning and unpoisoning fake stack alloca 78 void __asan_abi_alloca_poison(void *addr, size_t size) {} 79 void __asan_abi_allocas_unpoison(void *top, void *bottom) {} 80 81 // Functions concerning fake stack malloc 82 void *__asan_abi_stack_malloc_n(size_t scale, size_t size) { return NULL; } 83 void *__asan_abi_stack_malloc_always_n(size_t scale, size_t size) { 84 return NULL; 85 } 86 87 // Functions concerning fake stack free 88 void __asan_abi_stack_free_n(int scale, void *p, size_t n) {} 89 } 90