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//===-- memprof_interceptors_memintrinsics.cpp ---------------------------===//
//
// 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
//
//===---------------------------------------------------------------------===//
//
// This file is a part of MemProfiler, a memory profiler.
//
// MemProf versions of memcpy, memmove, and memset.
//===---------------------------------------------------------------------===//
#define SANITIZER_COMMON_NO_REDEFINE_BUILTINS
#include "memprof_interceptors_memintrinsics.h"
#include "memprof_interceptors.h"
#include "memprof_stack.h"
using namespace __memprof;
// memcpy is called during __memprof_init() from the internals of printf(...).
// We do not treat memcpy with to==from as a bug.
// See http://llvm.org/bugs/show_bug.cgi?id=11763.
#define MEMPROF_MEMCPY_IMPL(to, from, size) \
do { \
if (UNLIKELY(!memprof_inited)) \
return internal_memcpy(to, from, size); \
if (memprof_init_is_running) { \
return REAL(memcpy)(to, from, size); \
} \
ENSURE_MEMPROF_INITED(); \
MEMPROF_READ_RANGE(from, size); \
MEMPROF_WRITE_RANGE(to, size); \
return REAL(memcpy)(to, from, size); \
} while (0)
// memset is called inside Printf.
#define MEMPROF_MEMSET_IMPL(block, c, size) \
do { \
if (UNLIKELY(!memprof_inited)) \
return internal_memset(block, c, size); \
if (memprof_init_is_running) { \
return REAL(memset)(block, c, size); \
} \
ENSURE_MEMPROF_INITED(); \
MEMPROF_WRITE_RANGE(block, size); \
return REAL(memset)(block, c, size); \
} while (0)
#define MEMPROF_MEMMOVE_IMPL(to, from, size) \
do { \
if (UNLIKELY(!memprof_inited)) \
return internal_memmove(to, from, size); \
ENSURE_MEMPROF_INITED(); \
MEMPROF_READ_RANGE(from, size); \
MEMPROF_WRITE_RANGE(to, size); \
return internal_memmove(to, from, size); \
} while (0)
#define COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size) \
do { \
MEMPROF_INTERCEPTOR_ENTER(ctx, memmove); \
MEMPROF_MEMMOVE_IMPL(to, from, size); \
} while (false)
#define COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size) \
do { \
MEMPROF_INTERCEPTOR_ENTER(ctx, memcpy); \
MEMPROF_MEMCPY_IMPL(to, from, size); \
} while (false)
#define COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size) \
do { \
MEMPROF_INTERCEPTOR_ENTER(ctx, memset); \
MEMPROF_MEMSET_IMPL(block, c, size); \
} while (false)
#include "sanitizer_common/sanitizer_common_interceptors_memintrinsics.inc"
void *__memprof_memcpy(void *to, const void *from, uptr size) {
MEMPROF_MEMCPY_IMPL(to, from, size);
}
void *__memprof_memset(void *block, int c, uptr size) {
MEMPROF_MEMSET_IMPL(block, c, size);
}
void *__memprof_memmove(void *to, const void *from, uptr size) {
MEMPROF_MEMMOVE_IMPL(to, from, size);
}
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