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/*
* Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#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(char const*);
void __asan_before_dynamic_init(char const* /* module_name */)
{
}
void __asan_after_dynamic_init();
void __asan_after_dynamic_init()
{
}
}
#endif
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