arm64/mte/check_mmap_options.c

33 static int check_mte_memory(char *ptr, int size, int mode, int tag_check)
35 	mte_initialize_current_context(mode, (uintptr_t)ptr, size);
36 	memset(ptr, '1', size);
41 	mte_initialize_current_context(mode, (uintptr_t)ptr, -UNDERFLOW);
42 	memset(ptr - UNDERFLOW, '2', UNDERFLOW);
49 	mte_initialize_current_context(mode, (uintptr_t)ptr, size + OVERFLOW);
50 	memset(ptr + size, '3', OVERFLOW);
62 	char *ptr, *map_ptr;
73 		ptr = map_ptr + UNDERFLOW;
74 		mte_initialize_current_context(mode, (uintptr_t)ptr, sizes[run]);
76 		ptr = mte_insert_tags((void *)ptr, sizes[run]);
77 		if (!ptr || cur_mte_cxt.fault_valid == true) {
82 		result = check_mte_memory(ptr, sizes[run], mode, tag_check);
83 		mte_clear_tags((void *)ptr, sizes[run]);
93 	char *ptr, *map_ptr;
110 		ptr = map_ptr + UNDERFLOW;
111 		mte_initialize_current_context(mode, (uintptr_t)ptr, sizes[run]);
113 		ptr = mte_insert_tags((void *)ptr, sizes[run]);
114 		if (!ptr || cur_mte_cxt.fault_valid == true) {
120 		result = check_mte_memory(ptr, sizes[run], mode, tag_check);
121 		mte_clear_tags((void *)ptr, sizes[run]);
132 	char *ptr, *map_ptr;
140 		ptr = (char *)mte_allocate_memory_tag_range(sizes[run], mem_type, mapping,
142 		if (check_allocated_memory_range(ptr, sizes[run], mem_type,
145 		map_ptr = ptr - UNDERFLOW;
148 			mte_free_memory_tag_range((void *)ptr, sizes[run], mem_type,
153 		result = check_mte_memory(ptr, sizes[run], mode, TAG_CHECK_ON);
154 		mte_free_memory_tag_range((void *)ptr, sizes[run], mem_type, UNDERFLOW, OVERFLOW);
161 		ptr = (char *)mte_allocate_file_memory_tag_range(sizes[run], mem_type, mapping,
163 		if (check_allocated_memory_range(ptr, sizes[run], mem_type,
168 		map_ptr = ptr - UNDERFLOW;
172 			mte_free_memory_tag_range((void *)ptr, sizes[run], mem_type,
177 		result = check_mte_memory(ptr, sizes[run], mode, TAG_CHECK_ON);
178 		mte_free_memory_tag_range((void *)ptr, sizes[run], mem_type, UNDERFLOW, OVERFLOW);