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Diffstat (limited to 'compiler-rt/lib/hwasan/hwasan_flags.inc')
-rw-r--r-- | compiler-rt/lib/hwasan/hwasan_flags.inc | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/compiler-rt/lib/hwasan/hwasan_flags.inc b/compiler-rt/lib/hwasan/hwasan_flags.inc new file mode 100644 index 000000000000..dffbf56cb155 --- /dev/null +++ b/compiler-rt/lib/hwasan/hwasan_flags.inc @@ -0,0 +1,74 @@ +//===-- hwasan_flags.inc ----------------------------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// Hwasan runtime flags. +// +//===----------------------------------------------------------------------===// +#ifndef HWASAN_FLAG +# error "Define HWASAN_FLAG prior to including this file!" +#endif + +// HWASAN_FLAG(Type, Name, DefaultValue, Description) +// See COMMON_FLAG in sanitizer_flags.inc for more details. + +HWASAN_FLAG(bool, verbose_threads, false, + "inform on thread creation/destruction") +HWASAN_FLAG(bool, tag_in_malloc, true, "") +HWASAN_FLAG(bool, tag_in_free, true, "") +HWASAN_FLAG(bool, print_stats, false, "") +HWASAN_FLAG(bool, halt_on_error, true, "") +HWASAN_FLAG(bool, atexit, false, "") + +// Test only flag to disable malloc/realloc/free memory tagging on startup. +// Tagging can be reenabled with __hwasan_enable_allocator_tagging(). +HWASAN_FLAG(bool, disable_allocator_tagging, false, "") + +// If false, use simple increment of a thread local counter to generate new +// tags. +HWASAN_FLAG(bool, random_tags, true, "") + +HWASAN_FLAG( + int, max_malloc_fill_size, 0x1000, // By default, fill only the first 4K. + "HWASan allocator flag. max_malloc_fill_size is the maximal amount of " + "bytes that will be filled with malloc_fill_byte on malloc.") + +HWASAN_FLAG(bool, free_checks_tail_magic, 1, + "If set, free() will check the magic values " + "to the right of the allocated object " + "if the allocation size is not a divident of the granule size") +HWASAN_FLAG( + int, max_free_fill_size, 0, + "HWASan allocator flag. max_free_fill_size is the maximal amount of " + "bytes that will be filled with free_fill_byte during free.") +HWASAN_FLAG(int, malloc_fill_byte, 0xbe, + "Value used to fill the newly allocated memory.") +HWASAN_FLAG(int, free_fill_byte, 0x55, + "Value used to fill deallocated memory.") +HWASAN_FLAG(int, heap_history_size, 1023, + "The number of heap (de)allocations remembered per thread. " + "Affects the quality of heap-related reports, but not the ability " + "to find bugs.") +HWASAN_FLAG(bool, export_memory_stats, true, + "Export up-to-date memory stats through /proc") +HWASAN_FLAG(int, stack_history_size, 1024, + "The number of stack frames remembered per thread. " + "Affects the quality of stack-related reports, but not the ability " + "to find bugs.") + +// Malloc / free bisection. Only tag malloc and free calls when a hash of +// allocation size and stack trace is between malloc_bisect_left and +// malloc_bisect_right (both inclusive). [0, 0] range is special and disables +// bisection (i.e. everything is tagged). Once the range is narrowed down +// enough, use malloc_bisect_dump to see interesting allocations. +HWASAN_FLAG(uptr, malloc_bisect_left, 0, + "Left bound of malloc bisection, inclusive.") +HWASAN_FLAG(uptr, malloc_bisect_right, 0, + "Right bound of malloc bisection, inclusive.") +HWASAN_FLAG(bool, malloc_bisect_dump, false, + "Print all allocations within [malloc_bisect_left, " + "malloc_bisect_right] range ") |