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Diffstat (limited to 'lib/asan/asan_interface_internal.h')
-rw-r--r-- | lib/asan/asan_interface_internal.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/lib/asan/asan_interface_internal.h b/lib/asan/asan_interface_internal.h new file mode 100644 index 000000000000..24f76253bccd --- /dev/null +++ b/lib/asan/asan_interface_internal.h @@ -0,0 +1,141 @@ +//===-- asan_interface_internal.h -------------------------------*- C++ -*-===// +// +// 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 header can be included by the instrumented program to fetch +// data (mostly allocator statistics) from ASan runtime library. +//===----------------------------------------------------------------------===// +#ifndef ASAN_INTERFACE_INTERNAL_H +#define ASAN_INTERFACE_INTERNAL_H + +#include "sanitizer_common/sanitizer_internal_defs.h" + +using __sanitizer::uptr; + +extern "C" { + // This function should be called at the very beginning of the process, + // before any instrumented code is executed and before any call to malloc. + // Everytime the asan ABI changes we also change the version number in this + // name. Objects build with incompatible asan ABI version + // will not link with run-time. + // Changes between ABI versions: + // v1=>v2: added 'module_name' to __asan_global + // v2=>v3: stack frame description (created by the compiler) + // contains the function PC as the 3-rd field (see + // DescribeAddressIfStack). + void __asan_init_v3() SANITIZER_INTERFACE_ATTRIBUTE; + #define __asan_init __asan_init_v3 + + // This structure describes an instrumented global variable. + struct __asan_global { + uptr beg; // The address of the global. + uptr size; // The original size of the global. + uptr size_with_redzone; // The size with the redzone. + const char *name; // Name as a C string. + const char *module_name; // Module name as a C string. This pointer is a + // unique identifier of a module. + uptr has_dynamic_init; // Non-zero if the global has dynamic initializer. + }; + + // These two functions should be called by the instrumented code. + // 'globals' is an array of structures describing 'n' globals. + void __asan_register_globals(__asan_global *globals, uptr n) + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_unregister_globals(__asan_global *globals, uptr n) + SANITIZER_INTERFACE_ATTRIBUTE; + + // These two functions should be called before and after dynamic initializers + // of a single module run, respectively. + void __asan_before_dynamic_init(const char *module_name) + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_after_dynamic_init() + SANITIZER_INTERFACE_ATTRIBUTE; + + // These two functions are used by the instrumented code in the + // use-after-return mode. __asan_stack_malloc allocates size bytes of + // fake stack and __asan_stack_free poisons it. real_stack is a pointer to + // the real stack region. + uptr __asan_stack_malloc(uptr size, uptr real_stack) + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_stack_free(uptr ptr, uptr size, uptr real_stack) + SANITIZER_INTERFACE_ATTRIBUTE; + + // These two functions are used by instrumented code in the + // use-after-scope mode. They mark memory for local variables as + // unaddressable when they leave scope and addressable before the + // function exits. + void __asan_poison_stack_memory(uptr addr, uptr size) + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_unpoison_stack_memory(uptr addr, uptr size) + SANITIZER_INTERFACE_ATTRIBUTE; + + // Performs cleanup before a NoReturn function. Must be called before things + // like _exit and execl to avoid false positives on stack. + void __asan_handle_no_return() SANITIZER_INTERFACE_ATTRIBUTE; + + void __asan_poison_memory_region(void const volatile *addr, uptr size) + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_unpoison_memory_region(void const volatile *addr, uptr size) + SANITIZER_INTERFACE_ATTRIBUTE; + + bool __asan_address_is_poisoned(void const volatile *addr) + SANITIZER_INTERFACE_ATTRIBUTE; + + uptr __asan_region_is_poisoned(uptr beg, uptr size) + SANITIZER_INTERFACE_ATTRIBUTE; + + void __asan_describe_address(uptr addr) + SANITIZER_INTERFACE_ATTRIBUTE; + + void __asan_report_error(uptr pc, uptr bp, uptr sp, + uptr addr, bool is_write, uptr access_size) + SANITIZER_INTERFACE_ATTRIBUTE; + + int __asan_set_error_exit_code(int exit_code) + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_set_death_callback(void (*callback)(void)) + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_set_error_report_callback(void (*callback)(const char*)) + SANITIZER_INTERFACE_ATTRIBUTE; + + /* OPTIONAL */ void __asan_on_error() + SANITIZER_WEAK_ATTRIBUTE SANITIZER_INTERFACE_ATTRIBUTE; + + /* OPTIONAL */ bool __asan_symbolize(const void *pc, char *out_buffer, + int out_size) + SANITIZER_WEAK_ATTRIBUTE SANITIZER_INTERFACE_ATTRIBUTE; + + uptr __asan_get_estimated_allocated_size(uptr size) + SANITIZER_INTERFACE_ATTRIBUTE; + bool __asan_get_ownership(const void *p) + SANITIZER_INTERFACE_ATTRIBUTE; + uptr __asan_get_allocated_size(const void *p) + SANITIZER_INTERFACE_ATTRIBUTE; + uptr __asan_get_current_allocated_bytes() + SANITIZER_INTERFACE_ATTRIBUTE; + uptr __asan_get_heap_size() + SANITIZER_INTERFACE_ATTRIBUTE; + uptr __asan_get_free_bytes() + SANITIZER_INTERFACE_ATTRIBUTE; + uptr __asan_get_unmapped_bytes() + SANITIZER_INTERFACE_ATTRIBUTE; + void __asan_print_accumulated_stats() + SANITIZER_INTERFACE_ATTRIBUTE; + + /* OPTIONAL */ const char* __asan_default_options() + SANITIZER_WEAK_ATTRIBUTE SANITIZER_INTERFACE_ATTRIBUTE; + + /* OPTIONAL */ void __asan_malloc_hook(void *ptr, uptr size) + SANITIZER_WEAK_ATTRIBUTE SANITIZER_INTERFACE_ATTRIBUTE; + /* OPTIONAL */ void __asan_free_hook(void *ptr) + SANITIZER_WEAK_ATTRIBUTE SANITIZER_INTERFACE_ATTRIBUTE; +} // extern "C" + +#endif // ASAN_INTERFACE_INTERNAL_H |