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