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//===-- msan_interface.h --------------------------------------------------===//
//
// 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 MemorySanitizer.
//
// Public interface header.
//===----------------------------------------------------------------------===//
#ifndef MSAN_INTERFACE_H
#define MSAN_INTERFACE_H
#include <sanitizer/common_interface_defs.h>
#ifdef __cplusplus
extern "C" {
#endif
#if __has_feature(memory_sanitizer)
/* Returns a string describing a stack origin.
Return NULL if the origin is invalid, or is not a stack origin. */
const char *__msan_get_origin_descr_if_stack(uint32_t id);
/* Set raw origin for the memory range. */
void __msan_set_origin(void *a, size_t size, uint32_t origin);
/* Get raw origin for an address. */
uint32_t __msan_get_origin(void *a);
/* Returns non-zero if tracking origins. */
int __msan_get_track_origins();
/* Returns the origin id of the latest UMR in the calling thread. */
uint32_t __msan_get_umr_origin();
/* Make memory region fully initialized (without changing its contents). */
void __msan_unpoison(void *a, size_t size);
/* Make memory region fully uninitialized (without changing its contents). */
void __msan_poison(void *a, size_t size);
/* Make memory region partially uninitialized (without changing its contents).
*/
void __msan_partial_poison(void* data, void* shadow, size_t size);
/* Returns the offset of the first (at least partially) poisoned byte in the
memory range, or -1 if the whole range is good. */
intptr_t __msan_test_shadow(const void *x, size_t size);
/* Set exit code when error(s) were detected.
Value of 0 means don't change the program exit code. */
void __msan_set_exit_code(int exit_code);
/* For testing:
__msan_set_expect_umr(1);
... some buggy code ...
__msan_set_expect_umr(0);
The last line will verify that a UMR happened. */
void __msan_set_expect_umr(int expect_umr);
/* Print shadow and origin for the memory range to stdout in a human-readable
format. */
void __msan_print_shadow(const void *x, size_t size);
/* Print current function arguments shadow and origin to stdout in a
human-readable format. */
void __msan_print_param_shadow();
/* Returns true if running under a dynamic tool (DynamoRio-based). */
int __msan_has_dynamic_component();
/* Tell MSan about newly allocated memory (ex.: custom allocator).
Memory will be marked uninitialized, with origin at the call site. */
void __msan_allocated_memory(void* data, size_t size);
#else // __has_feature(memory_sanitizer)
#define __msan_get_origin_descr_if_stack(id) ((const char*)0)
#define __msan_set_origin(a, size, origin)
#define __msan_get_origin(a) ((uint32_t)-1)
#define __msan_get_track_origins() (0)
#define __msan_get_umr_origin() ((uint32_t)-1)
#define __msan_unpoison(a, size)
#define __msan_poison(a, size)
#define __msan_partial_poison(data, shadow, size)
#define __msan_test_shadow(x, size) ((intptr_t)-1)
#define __msan_set_exit_code(exit_code)
#define __msan_set_expect_umr(expect_umr)
#define __msan_print_shadow(x, size)
#define __msan_print_param_shadow()
#define __msan_has_dynamic_component() (0)
#define __msan_allocated_memory(data, size)
#endif // __has_feature(memory_sanitizer)
#ifdef __cplusplus
} // extern "C"
#endif
#endif
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