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 #else
  16 #   define SIGNED_METHOD_LIST_IMP
  17 #endif
  18
  19 #define str(x) #x
  20 #define str2(x) str(x)
  21
  22 __BEGIN_DECLS
  23 // not id to avoid ARC operations because the class doesn't implement RR methods
  24 void* nop(void* self) { return self; }
  25 __END_DECLS
  26
  27 asm(
  28     ".globl _OBJC_CLASS_$_Super    \n"
  29     ".section __DATA,__objc_data  \n"
  30     ".align 3                     \n"
  31     "_OBJC_CLASS_$_Super:          \n"
  32     PTR "_OBJC_METACLASS_$_Super   \n"
  33     PTR "0                        \n"
  34     PTR "__objc_empty_cache \n"
  35     PTR "0 \n"
  36     PTR "L_ro \n"
  37     // pad to OBJC_MAX_CLASS_SIZE
  38     PTR "0 \n"
  39     PTR "0 \n"
  40     PTR "0 \n"
  41     PTR "0 \n"
  42     PTR "0 \n"
  43     PTR "0 \n"
  44     PTR "0 \n"
  45     PTR "0 \n"
  46     PTR "0 \n"
  47     PTR "0 \n"
  48     PTR "0 \n"
  49     PTR "0 \n"
  50     PTR "0 \n"
  51     PTR "0 \n"
  52     PTR "0 \n"
  53     PTR "0 \n"
  54     PTR "0 \n"
  55     PTR "0 \n"
  56     PTR "0 \n"
  57     PTR "0 \n"
  58     PTR "0 \n"
  59     PTR "0 \n"
  60     PTR "0 \n"
  61     PTR "0 \n"
  62     PTR "0 \n"
  63     PTR "0 \n"
  64     PTR "0 \n"
  65     ""
  66     "_OBJC_METACLASS_$_Super:          \n"
  67     PTR "_OBJC_METACLASS_$_Super   \n"
  68     PTR "_OBJC_CLASS_$_Super        \n"
  69     PTR "__objc_empty_cache \n"
  70     PTR "0 \n"
  71     PTR "L_meta_ro \n"
  72     // pad to OBJC_MAX_CLASS_SIZE
  73     PTR "0 \n"
  74     PTR "0 \n"
  75     PTR "0 \n"
  76     PTR "0 \n"
  77     PTR "0 \n"
  78     PTR "0 \n"
  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     ""
 101     "L_ro: \n"
 102     ".long 2 \n"
 103     ".long 0 \n"
 104     ".long " PTRSIZE " \n"
 105 #if __LP64__
 106     ".long 0 \n"
 107 #endif
 108     PTR "0 \n"
 109     PTR "L_super_name \n"
 110 #if EVIL_SUPER
 111     PTR "L_evil_methods \n"
 112 #else
 113     PTR "L_good_methods \n"
 114 #endif
 115     PTR "0 \n"
 116     PTR "L_super_ivars \n"
 117     PTR "0 \n"
 118     PTR "0 \n"
 119     ""
 120     "L_meta_ro: \n"
 121     ".long 3 \n"
 122     ".long 40 \n"
 123     ".long 40 \n"
 124 #if __LP64__
 125     ".long 0 \n"
 126 #endif
 127     PTR "0 \n"
 128     PTR "L_super_name \n"
 129 #if EVIL_SUPER_META
 130     PTR "L_evil_methods \n"
 131 #else
 132     PTR "L_good_methods \n"
 133 #endif
 134     PTR "0 \n"
 135     PTR "0 \n"
 136     PTR "0 \n"
 137     PTR "0 \n"
 138
 139     ".globl _OBJC_CLASS_$_Sub    \n"
 140     ".section __DATA,__objc_data  \n"
 141     ".align 3                     \n"
 142     "_OBJC_CLASS_$_Sub:          \n"
 143     PTR "_OBJC_METACLASS_$_Sub   \n"
 144     PTR "_OBJC_CLASS_$_Super       \n"
 145     PTR "__objc_empty_cache \n"
 146     PTR "0 \n"
 147     PTR "L_sub_ro \n"
 148     // pad to OBJC_MAX_CLASS_SIZE
 149     PTR "0 \n"
 150     PTR "0 \n"
 151     PTR "0 \n"
 152     PTR "0 \n"
 153     PTR "0 \n"
 154     PTR "0 \n"
 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     ""
 177     "_OBJC_METACLASS_$_Sub:          \n"
 178     PTR "_OBJC_METACLASS_$_Super   \n"
 179     PTR "_OBJC_METACLASS_$_Super        \n"
 180     PTR "__objc_empty_cache \n"
 181     PTR "0 \n"
 182     PTR "L_sub_meta_ro \n"
 183     // pad to OBJC_MAX_CLASS_SIZE
 184     PTR "0 \n"
 185     PTR "0 \n"
 186     PTR "0 \n"
 187     PTR "0 \n"
 188     PTR "0 \n"
 189     PTR "0 \n"
 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     ""
 212     "L_sub_ro: \n"
 213     ".long 2 \n"
 214     ".long 0 \n"
 215     ".long " PTRSIZE " \n"
 216 #if __LP64__
 217     ".long 0 \n"
 218 #endif
 219     PTR "0 \n"
 220     PTR "L_sub_name \n"
 221 #if EVIL_SUB
 222     PTR "L_evil_methods \n"
 223 #else
 224     PTR "L_good_methods \n"
 225 #endif
 226     PTR "0 \n"
 227     PTR "L_sub_ivars \n"
 228     PTR "0 \n"
 229     PTR "0 \n"
 230     ""
 231     "L_sub_meta_ro: \n"
 232     ".long 3 \n"
 233     ".long 40 \n"
 234     ".long 40 \n"
 235 #if __LP64__
 236     ".long 0 \n"
 237 #endif
 238     PTR "0 \n"
 239     PTR "L_sub_name \n"
 240 #if EVIL_SUB_META
 241     PTR "L_evil_methods \n"
 242 #else
 243     PTR "L_good_methods \n"
 244 #endif
 245     PTR "0 \n"
 246     PTR "0 \n"
 247     PTR "0 \n"
 248     PTR "0 \n"
 249
 250     "L_evil_methods: \n"
 251     ".long 3*" PTRSIZE " \n"
 252     ".long 1 \n"
 253     PTR "L_load \n"
 254     PTR "L_load \n"
 255     PTR "_abort" SIGNED_METHOD_LIST_IMP "\n"
 256     // assumes that abort is inside the dyld shared cache
 257
 258     "L_good_methods: \n"
 259     ".long 3*" PTRSIZE " \n"
 260     ".long 2 \n"
 261     PTR "L_load \n"
 262     PTR "L_load \n"
 263     PTR "_nop" SIGNED_METHOD_LIST_IMP "\n"
 264     PTR "L_self \n"
 265     PTR "L_self \n"
 266     PTR "_nop" SIGNED_METHOD_LIST_IMP "\n"
 267
 268     "L_super_ivars: \n"
 269     ".long 4*" PTRSIZE " \n"
 270     ".long 1 \n"
 271     PTR "L_super_ivar_offset \n"
 272     PTR "L_super_ivar_name \n"
 273     PTR "L_super_ivar_type \n"
 274     ".long " LOGPTRSIZE " \n"
 275     ".long " PTRSIZE " \n"
 276
 277     "L_sub_ivars: \n"
 278     ".long 4*" PTRSIZE " \n"
 279     ".long 1 \n"
 280     PTR "L_sub_ivar_offset \n"
 281     PTR "L_sub_ivar_name \n"
 282     PTR "L_sub_ivar_type \n"
 283     ".long " LOGPTRSIZE " \n"
 284     ".long " PTRSIZE " \n"
 285
 286     "L_super_ivar_offset: \n"
 287     ".long 0 \n"
 288     "L_sub_ivar_offset: \n"
 289     ".long " PTRSIZE " \n"
 290
 291     ".cstring \n"
 292     "L_super_name:       .ascii \"Super\\0\" \n"
 293     "L_sub_name:         .ascii \"Sub\\0\" \n"
 294     "L_load:             .ascii \"load\\0\" \n"
 295     "L_self:             .ascii \"self\\0\" \n"
 296     "L_super_ivar_name:  .ascii \"super_ivar\\0\" \n"
 297     "L_super_ivar_type:  .ascii \"c\\0\" \n"
 298     "L_sub_ivar_name:    .ascii \"sub_ivar\\0\" \n"
 299     "L_sub_ivar_type:    .ascii \"@\\0\" \n"
 300
 301
 302     ".section __DATA,__objc_classlist \n"
 303 #if !OMIT_SUPER
 304     PTR "_OBJC_CLASS_$_Super \n"
 305 #endif
 306 #if !OMIT_SUB
 307     PTR "_OBJC_CLASS_$_Sub \n"
 308 #endif
 309
 310     ".section __DATA,__objc_nlclslist \n"
 311 #if !OMIT_NL_SUPER
 312     PTR "_OBJC_CLASS_$_Super \n"
 313 #endif
 314 #if !OMIT_NL_SUB
 315     PTR "_OBJC_CLASS_$_Sub \n"
 316 #endif
 317
 318     ".text \n"
 319 );
 320
 321 void fn(void) { }