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/*
* Copyright (c) 2021, Brian Gianforcaro <b.gianfo@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(__SANITIZE_ADDRESS__)
# include <Kernel/AddressSanitizer.h>
void Kernel::AddressSanitizer::shadow_va_check_load(unsigned long address, size_t size, void* return_address)
{
(void)address;
(void)size;
(void)return_address;
}
void Kernel::AddressSanitizer::shadow_va_check_store(unsigned long address, size_t size, void* return_address)
{
(void)address;
(void)size;
(void)return_address;
}
using namespace Kernel;
using namespace Kernel::AddressSanitizer;
extern "C" {
// Define a macro to easily declare the KASAN load and store callbacks for
// the various sizes of data type.
//
# define ADDRESS_SANITIZER_LOAD_STORE(size) \
void __asan_load##size(unsigned long); \
void __asan_load##size(unsigned long address) \
{ \
shadow_va_check_load(address, size, __builtin_return_address(0)); \
} \
void __asan_load##size##_noabort(unsigned long); \
void __asan_load##size##_noabort(unsigned long address) \
{ \
shadow_va_check_load(address, size, __builtin_return_address(0)); \
} \
void __asan_store##size(unsigned long); \
void __asan_store##size(unsigned long address) \
{ \
shadow_va_check_store(address, size, __builtin_return_address(0)); \
} \
void __asan_store##size##_noabort(unsigned long); \
void __asan_store##size##_noabort(unsigned long address) \
{ \
shadow_va_check_store(address, size, __builtin_return_address(0)); \
}
ADDRESS_SANITIZER_LOAD_STORE(1);
ADDRESS_SANITIZER_LOAD_STORE(2);
ADDRESS_SANITIZER_LOAD_STORE(4);
ADDRESS_SANITIZER_LOAD_STORE(8);
ADDRESS_SANITIZER_LOAD_STORE(16);
# undef ADDRESS_SANITIZER_LOAD_STORE
void __asan_loadN(unsigned long, size_t);
void __asan_loadN(unsigned long address, size_t size)
{
shadow_va_check_load(address, size, __builtin_return_address(0));
}
void __asan_loadN_noabort(unsigned long, size_t);
void __asan_loadN_noabort(unsigned long address, size_t size)
{
shadow_va_check_load(address, size, __builtin_return_address(0));
}
void __asan_storeN(unsigned long, size_t);
void __asan_storeN(unsigned long address, size_t size)
{
shadow_va_check_store(address, size, __builtin_return_address(0));
}
void __asan_storeN_noabort(unsigned long, size_t);
void __asan_storeN_noabort(unsigned long address, size_t size)
{
shadow_va_check_store(address, size, __builtin_return_address(0));
}
// Performs shadow memory cleanup of the current thread's stack before a
// function marked with the [[noreturn]] attribute is called.
//
void __asan_handle_no_return(void);
void __asan_handle_no_return(void)
{
}
void __asan_before_dynamic_init(const char*);
void __asan_before_dynamic_init(const char* /* module_name */)
{
}
void __asan_after_dynamic_init();
void __asan_after_dynamic_init()
{
}
}
#endif
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