1 #ifndef _MAGIC_RANGE_H 2 #define _MAGIC_RANGE_H 3 4 #include <magic.h> 5 #include <magic_def.h> 6 #include <magic_common.h> 7 #include <magic_structs.h> 8 9 /* Magic memory ranges */ 10 #define magic_null_range _magic_vars->null_range 11 #define magic_data_range _magic_vars->data_range 12 #define magic_heap_range _magic_vars->heap_range 13 #define magic_map_range _magic_vars->map_range 14 #define magic_shm_range _magic_vars->shm_range 15 #define magic_stack_range _magic_vars->stack_range 16 #define magic_text_range _magic_vars->text_range 17 18 #define magic_sentry_range _magic_vars->sentry_range 19 #define magic_function_range _magic_vars->function_range 20 #define magic_dfunction_range _magic_vars->dfunction_range 21 22 #define magic_heap_start _magic_vars->heap_start 23 #define magic_heap_end _magic_vars->heap_end 24 #define magic_update_dsentry_ranges _magic_vars->update_dsentry_ranges 25 #define magic_update_dfunction_ranges _magic_vars->update_dfunction_ranges 26 27 /* Magic address ranges. */ 28 #define MAGIC_ADDR_IS_WITHIN(A, MIN, MAX) ((MIN) <= (A) && (A) <= (MAX)) 29 #define MAGIC_ADDR_IS_IN_RANGE(A, R) \ 30 MAGIC_ADDR_IS_WITHIN(A, (R)[0], (R)[1]) 31 #define MAGIC_RANGE_IS_IN_RANGE(r, R) \ 32 (MAGIC_ADDR_IS_IN_RANGE((r)[0], R) && MAGIC_ADDR_IS_IN_RANGE((r)[1], R)) 33 #define MAGIC_RANGE_COPY(RS, RD) memcpy(RD, RS, 2 * sizeof(void *)) 34 #define MAGIC_RANGE_INIT(R) MAGIC_RANGE_COPY(magic_null_range,R) 35 #define MAGIC_RANGE_IS_NULL(R) \ 36 ((R)[0] == magic_null_range[0] && (R)[1] == magic_null_range[1]) 37 #define MAGIC_RANGE_IS_VALID(R) \ 38 (MAGIC_RANGE_IS_NULL(R) || ((R)[0] <= (R)[1])) 39 #define MAGIC_RANGE_UPDATE(R, MIN, MAX) \ 40 do { \ 41 if(MIN < (R)[0]) \ 42 (R)[0] = MIN; \ 43 if(MAX > (R)[1]) \ 44 (R)[1] = MAX; \ 45 } while(0) 46 #define MAGIC_RANGE_SET_MIN(R, MIN) ((R)[0] = MIN) 47 #define MAGIC_RANGE_SET_MAX(R, MAX) ((R)[1] = MAX) 48 #define MAGIC_RANGE_SET(R, MIN, MAX) \ 49 do { \ 50 MAGIC_RANGE_SET_MIN(R, MIN); \ 51 MAGIC_RANGE_SET_MAX(R, MAX); \ 52 } while(0) 53 #define MAGIC_RANGE_PAGE_ROUND_MIN(R) \ 54 ((R)[0] = (char*)(R)[0] - (unsigned long)(R)[0] % MAGIC_PAGE_SIZE) 55 #define MAGIC_RANGE_PAGE_ROUND_MAX(R) \ 56 do { \ 57 unsigned long diff = (unsigned long)(R)[1] % MAGIC_PAGE_SIZE; \ 58 if(diff) \ 59 (R)[1] = (char *)(R)[1] + MAGIC_PAGE_SIZE - diff - 1; \ 60 } while(0) 61 #define MAGIC_RANGE_PAGE_ROUND(R) \ 62 do { \ 63 MAGIC_RANGE_PAGE_ROUND_MIN(R); \ 64 MAGIC_RANGE_PAGE_ROUND_MAX(R); \ 65 } while(0) 66 #define MAGIC_RANGE_PRINT(R) \ 67 _magic_printf("RANGE %s=[0x%08x;0x%08x]", #R, (unsigned long)((R)[0]), \ 68 (unsigned long)((R)[1])) 69 #define MAGIC_RANGE_CHECK(R) \ 70 assert(MAGIC_RANGE_IS_VALID(R) && "Invalid range " #R); 71 #define MAGIC_RANGE_SIZE(R) \ 72 (!MAGIC_RANGE_IS_VALID(R) || MAGIC_RANGE_IS_NULL(R) ? \ 73 0 : (char *)(R)[1] - (char *)(R)[0]) 74 75 #if MAGIC_RANGE_DEBUG 76 #define MAGIC_RANGE_DEBUG_ADDR(A, R) \ 77 do { \ 78 char *what = MAGIC_ADDR_IS_IN_RANGE(A, R) ? "" : "not "; \ 79 _magic_printf("MRD: Address 0x%08x %sin ", A, what); \ 80 MAGIC_RANGE_PRINT(R); \ 81 _magic_printf("\n"); \ 82 MAGIC_RANGE_CHECK(R); \ 83 } while(0); 84 #else 85 #define MAGIC_RANGE_DEBUG_ADDR(A,R) MAGIC_RANGE_CHECK(R) 86 #endif 87 88 #define MAGIC_ADDR_LOOKUP_USE_DSENTRY_RANGES 1 89 #define MAGIC_ADDR_LOOKUP_USE_DFUNCTION_RANGES 1 90 91 /* Magic range functions. */ 92 PUBLIC void magic_ranges_init(void); 93 PUBLIC int magic_range_is_dfunction(void* addr); 94 PUBLIC int magic_range_is_dsentry(void* addr); 95 PUBLIC int magic_range_is_stack(void* addr); 96 97 /* Lookup functions. */ 98 PUBLIC int magic_range_lookup_by_addr(void *addr, void **container); 99 100 #endif /* _MAGIC_RANGE_H */ 101