runtime/objc-sel-table.s

   1 #include <TargetConditionals.h>
   2 #include <mach/vm_param.h>
   3
   4 #if __LP64__
   5 #if __arm64e__
   6 // 0x6AE1
   7 # define PTR(x) .quad x@AUTH(da, 27361, addr)
   8 #else
   9 # define PTR(x) .quad x
  10 #endif
  11 #else
  12 # define PTR(x) .long x
  13 #endif
  14
  15 // These offsets are populated by the dyld shared cache builder.
  16 // They point to memory allocatd elsewhere in the shared cache.
  17
  18 .section __TEXT,__objc_opt_ro
  19 .align 3
  20 .private_extern __objc_opt_data
  21 __objc_opt_data:
  22 .long 15 /* table.version */
  23 .long 0 /* table.flags */
  24 .long 0 /* table.selopt_offset */
  25 .long 0 /* table.headeropt_ro_offset */
  26 .long 0 /* table.clsopt_offset */
  27 .long 0 /* table.protocolopt_offset */
  28 .long 0 /* table.headeropt_rw_offset */
  29 .space PAGE_MAX_SIZE-28
  30
  31
  32 /* section of pointers that the shared cache optimizer wants to know about */
  33 .section __DATA,__objc_opt_ptrs
  34 .align 3
  35
  36 #if TARGET_OS_OSX  &&  __i386__
  37 // old ABI
  38 .globl .objc_class_name_Protocol
  39 PTR(.objc_class_name_Protocol)
  40 #else
  41 // new ABI
  42 .globl _OBJC_CLASS_$_Protocol
  43 PTR(_OBJC_CLASS_$_Protocol)
  44 #endif