test/evil-class-def.m

   1 #include <sys/cdefs.h>
   2
   3 #if __LP64__
   4 #   define PTR " .quad "
   5 #   define PTRSIZE "8"
   6 #   define LOGPTRSIZE "3"
   7 #else
   8 #   define PTR " .long "
   9 #   define PTRSIZE "4"
  10 #   define LOGPTRSIZE "2"
  11 #endif
  12
  13 #if __has_feature(ptrauth_calls)
  14 #   define SIGNED_METHOD_LIST_IMP "@AUTH(ia,0,addr) "
  15 #   define SIGNED_METHOD_LIST "@AUTH(da,0xC310,addr) "
  16 #   define SIGNED_ISA "@AUTH(da, 0x6AE1, addr) "
  17 #   define SIGNED_SUPER "@AUTH(da, 0xB5AB, addr) "
  18 #else
  19 #   define SIGNED_METHOD_LIST_IMP
  20 #   define SIGNED_METHOD_LIST
  21 #   define SIGNED_ISA
  22 #   define SIGNED_SUPER
  23 #endif
  24
  25 #define str(x) #x
  26 #define str2(x) str(x)
  27
  28 __BEGIN_DECLS
  29 // not id to avoid ARC operations because the class doesn't implement RR methods
  30 void* nop(void* self) { return self; }
  31 __END_DECLS
  32
  33 asm(
  34     ".globl _OBJC_CLASS_$_Super               \n"
  35     ".section __DATA,__objc_data              \n"
  36     ".align 3                                 \n"
  37     "_OBJC_CLASS_$_Super:                     \n"
  38     PTR "_OBJC_METACLASS_$_Super" SIGNED_ISA "\n"
  39     PTR "0                                    \n"
  40     PTR "__objc_empty_cache                   \n"
  41     PTR "0                                    \n"
  42     PTR "L_ro                                 \n"
  43     // pad to OBJC_MAX_CLASS_SIZE
  44     PTR "0 \n"
  45     PTR "0 \n"
  46     PTR "0 \n"
  47     PTR "0 \n"
  48     PTR "0 \n"
  49     PTR "0 \n"
  50     PTR "0 \n"
  51     PTR "0 \n"
  52     PTR "0 \n"
  53     PTR "0 \n"
  54     PTR "0 \n"
  55     PTR "0 \n"
  56     PTR "0 \n"
  57     PTR "0 \n"
  58     PTR "0 \n"
  59     PTR "0 \n"
  60     PTR "0 \n"
  61     PTR "0 \n"
  62     PTR "0 \n"
  63     PTR "0 \n"
  64     PTR "0 \n"
  65     PTR "0 \n"
  66     PTR "0 \n"
  67     PTR "0 \n"
  68     PTR "0 \n"
  69     PTR "0 \n"
  70     PTR "0 \n"
  71     ""
  72     "_OBJC_METACLASS_$_Super:                 \n"
  73     PTR "_OBJC_METACLASS_$_Super" SIGNED_ISA "\n"
  74     PTR "_OBJC_CLASS_$_Super" SIGNED_SUPER   "\n"
  75     PTR "__objc_empty_cache                   \n"
  76     PTR "0                                    \n"
  77     PTR "L_meta_ro                            \n"
  78     // pad to OBJC_MAX_CLASS_SIZE
  79     PTR "0 \n"
  80     PTR "0 \n"
  81     PTR "0 \n"
  82     PTR "0 \n"
  83     PTR "0 \n"
  84     PTR "0 \n"
  85     PTR "0 \n"
  86     PTR "0 \n"
  87     PTR "0 \n"
  88     PTR "0 \n"
  89     PTR "0 \n"
  90     PTR "0 \n"
  91     PTR "0 \n"
  92     PTR "0 \n"
  93     PTR "0 \n"
  94     PTR "0 \n"
  95     PTR "0 \n"
  96     PTR "0 \n"
  97     PTR "0 \n"
  98     PTR "0 \n"
  99     PTR "0 \n"
 100     PTR "0 \n"
 101     PTR "0 \n"
 102     PTR "0 \n"
 103     PTR "0 \n"
 104     PTR "0 \n"
 105     PTR "0 \n"
 106     ""
 107     "L_ro: \n"
 108     ".long 2 \n"
 109     ".long 0 \n"
 110     ".long " PTRSIZE " \n"
 111 #if __LP64__
 112     ".long 0 \n"
 113 #endif
 114     PTR "0 \n"
 115     PTR "L_super_name \n"
 116 #if EVIL_SUPER
 117     PTR "L_evil_methods" SIGNED_METHOD_LIST "\n"
 118 #else
 119     PTR "L_good_methods" SIGNED_METHOD_LIST "\n"
 120 #endif
 121     PTR "0 \n"
 122     PTR "L_super_ivars \n"
 123     PTR "0 \n"
 124     PTR "0 \n"
 125     ""
 126     "L_meta_ro: \n"
 127     ".long 3 \n"
 128     ".long 40 \n"
 129     ".long 40 \n"
 130 #if __LP64__
 131     ".long 0 \n"
 132 #endif
 133     PTR "0 \n"
 134     PTR "L_super_name \n"
 135 #if EVIL_SUPER_META
 136     PTR "L_evil_methods" SIGNED_METHOD_LIST "\n"
 137 #else
 138     PTR "L_good_methods" SIGNED_METHOD_LIST "\n"
 139 #endif
 140     PTR "0 \n"
 141     PTR "0 \n"
 142     PTR "0 \n"
 143     PTR "0 \n"
 144
 145     ".globl _OBJC_CLASS_$_Sub               \n"
 146     ".section __DATA,__objc_data            \n"
 147     ".align 3                               \n"
 148     "_OBJC_CLASS_$_Sub:                     \n"
 149     PTR "_OBJC_METACLASS_$_Sub" SIGNED_ISA "\n"
 150     PTR "_OBJC_CLASS_$_Super" SIGNED_SUPER "\n"
 151     PTR "__objc_empty_cache                 \n"
 152     PTR "0                                  \n"
 153     PTR "L_sub_ro                           \n"
 154     // pad to OBJC_MAX_CLASS_SIZE
 155     PTR "0 \n"
 156     PTR "0 \n"
 157     PTR "0 \n"
 158     PTR "0 \n"
 159     PTR "0 \n"
 160     PTR "0 \n"
 161     PTR "0 \n"
 162     PTR "0 \n"
 163     PTR "0 \n"
 164     PTR "0 \n"
 165     PTR "0 \n"
 166     PTR "0 \n"
 167     PTR "0 \n"
 168     PTR "0 \n"
 169     PTR "0 \n"
 170     PTR "0 \n"
 171     PTR "0 \n"
 172     PTR "0 \n"
 173     PTR "0 \n"
 174     PTR "0 \n"
 175     PTR "0 \n"
 176     PTR "0 \n"
 177     PTR "0 \n"
 178     PTR "0 \n"
 179     PTR "0 \n"
 180     PTR "0 \n"
 181     PTR "0 \n"
 182     ""
 183     "_OBJC_METACLASS_$_Sub:                     \n"
 184     PTR "_OBJC_METACLASS_$_Super" SIGNED_ISA   "\n"
 185     PTR "_OBJC_METACLASS_$_Super" SIGNED_SUPER "\n"
 186     PTR "__objc_empty_cache                     \n"
 187     PTR "0                                      \n"
 188     PTR "L_sub_meta_ro                          \n"
 189     // pad to OBJC_MAX_CLASS_SIZE
 190     PTR "0 \n"
 191     PTR "0 \n"
 192     PTR "0 \n"
 193     PTR "0 \n"
 194     PTR "0 \n"
 195     PTR "0 \n"
 196     PTR "0 \n"
 197     PTR "0 \n"
 198     PTR "0 \n"
 199     PTR "0 \n"
 200     PTR "0 \n"
 201     PTR "0 \n"
 202     PTR "0 \n"
 203     PTR "0 \n"
 204     PTR "0 \n"
 205     PTR "0 \n"
 206     PTR "0 \n"
 207     PTR "0 \n"
 208     PTR "0 \n"
 209     PTR "0 \n"
 210     PTR "0 \n"
 211     PTR "0 \n"
 212     PTR "0 \n"
 213     PTR "0 \n"
 214     PTR "0 \n"
 215     PTR "0 \n"
 216     PTR "0 \n"
 217     ""
 218     "L_sub_ro: \n"
 219     ".long 2 \n"
 220     ".long 0 \n"
 221     ".long " PTRSIZE " \n"
 222 #if __LP64__
 223     ".long 0 \n"
 224 #endif
 225     PTR "0 \n"
 226     PTR "L_sub_name \n"
 227 #if EVIL_SUB
 228     PTR "L_evil_methods" SIGNED_METHOD_LIST "\n"
 229 #else
 230     PTR "L_good_methods" SIGNED_METHOD_LIST "\n"
 231 #endif
 232     PTR "0 \n"
 233     PTR "L_sub_ivars \n"
 234     PTR "0 \n"
 235     PTR "0 \n"
 236     ""
 237     "L_sub_meta_ro: \n"
 238     ".long 3 \n"
 239     ".long 40 \n"
 240     ".long 40 \n"
 241 #if __LP64__
 242     ".long 0 \n"
 243 #endif
 244     PTR "0 \n"
 245     PTR "L_sub_name \n"
 246 #if EVIL_SUB_META
 247     PTR "L_evil_methods" SIGNED_METHOD_LIST "\n"
 248 #else
 249     PTR "L_good_methods" SIGNED_METHOD_LIST "\n"
 250 #endif
 251     PTR "0 \n"
 252     PTR "0 \n"
 253     PTR "0 \n"
 254     PTR "0 \n"
 255
 256     "L_evil_methods: \n"
 257     ".long 3*" PTRSIZE " \n"
 258     ".long 1 \n"
 259     PTR "L_load \n"
 260     PTR "L_load \n"
 261     PTR "_abort" SIGNED_METHOD_LIST_IMP "\n"
 262     // assumes that abort is inside the dyld shared cache
 263
 264     "L_good_methods: \n"
 265     ".long 3*" PTRSIZE " \n"
 266     ".long 2 \n"
 267     PTR "L_load \n"
 268     PTR "L_load \n"
 269     PTR "_nop" SIGNED_METHOD_LIST_IMP "\n"
 270     PTR "L_self \n"
 271     PTR "L_self \n"
 272     PTR "_nop" SIGNED_METHOD_LIST_IMP "\n"
 273
 274     "L_super_ivars: \n"
 275     ".long 4*" PTRSIZE " \n"
 276     ".long 1 \n"
 277     PTR "L_super_ivar_offset \n"
 278     PTR "L_super_ivar_name \n"
 279     PTR "L_super_ivar_type \n"
 280     ".long " LOGPTRSIZE " \n"
 281     ".long " PTRSIZE " \n"
 282
 283     "L_sub_ivars: \n"
 284     ".long 4*" PTRSIZE " \n"
 285     ".long 1 \n"
 286     PTR "L_sub_ivar_offset \n"
 287     PTR "L_sub_ivar_name \n"
 288     PTR "L_sub_ivar_type \n"
 289     ".long " LOGPTRSIZE " \n"
 290     ".long " PTRSIZE " \n"
 291
 292     "L_super_ivar_offset: \n"
 293     ".long 0 \n"
 294     "L_sub_ivar_offset: \n"
 295     ".long " PTRSIZE " \n"
 296
 297     ".cstring \n"
 298     "L_super_name:       .ascii \"Super\\0\" \n"
 299     "L_sub_name:         .ascii \"Sub\\0\" \n"
 300     "L_load:             .ascii \"load\\0\" \n"
 301     "L_self:             .ascii \"self\\0\" \n"
 302     "L_super_ivar_name:  .ascii \"super_ivar\\0\" \n"
 303     "L_super_ivar_type:  .ascii \"c\\0\" \n"
 304     "L_sub_ivar_name:    .ascii \"sub_ivar\\0\" \n"
 305     "L_sub_ivar_type:    .ascii \"@\\0\" \n"
 306
 307
 308     ".section __DATA,__objc_classlist \n"
 309 #if !OMIT_SUPER
 310     PTR "_OBJC_CLASS_$_Super \n"
 311 #endif
 312 #if !OMIT_SUB
 313     PTR "_OBJC_CLASS_$_Sub \n"
 314 #endif
 315
 316     ".section __DATA,__objc_nlclslist \n"
 317 #if !OMIT_NL_SUPER
 318     PTR "_OBJC_CLASS_$_Super \n"
 319 #endif
 320 #if !OMIT_NL_SUB
 321     PTR "_OBJC_CLASS_$_Sub \n"
 322 #endif
 323
 324     ".text \n"
 325 );
 326
 327 void fn(void) { }