41   //   share set-hi instructions between addresses that differ by a small
  42   //   offset (e.g., different static variables in the same class).
  43   //   On such machines, the "x" argument to set_value on all set-lo
  44   //   instructions must be the same as the "x" argument for the
  45   //   corresponding set-hi instructions.  The "o" arguments for the
  46   //   set-hi instructions are ignored, and must not affect the high-half
  47   //   immediate constant.  The "o" arguments for the set-lo instructions are
  48   //   added into the low-half immediate constant, and must not overflow it."
  49   //
  50   // Currently we don't support splitting of relocations, so o must be
  51   // zero:
  52   assert(o == 0, "tried to split relocations");
  53 
  54   if (!verify_only) {
  55     if (format() != 1) {
  56       nativeMovConstReg_at(addr())->set_data_plain(((intptr_t)x), code());
  57     } else {
  58       assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type,
  59              "how to encode else?");
  60       narrowOop no = (type() == relocInfo::oop_type) ?
  61         oopDesc::encode_heap_oop((oop)x) : oopDesc::encode_klass((Klass*)x);
  62       nativeMovConstReg_at(addr())->set_narrow_oop(no, code());
  63     }
  64   } else {
  65     assert((address) (nativeMovConstReg_at(addr())->data()) == x, "data must match");
  66   }
  67 }
  68 
  69 address Relocation::pd_call_destination(address orig_addr) {
  70   intptr_t adj = 0;
  71   address inst_loc = addr();
  72 
  73   if (orig_addr != NULL) {
  74     // We just moved this call instruction from orig_addr to addr().
  75     // This means its target will appear to have grown by addr() - orig_addr.
  76     adj = -(inst_loc - orig_addr);
  77   }
  78   if (NativeFarCall::is_far_call_at(inst_loc)) {
  79     NativeFarCall* call = nativeFarCall_at(inst_loc);
  80     return call->destination() + (intptr_t)(call->is_pcrelative() ? adj : 0);
  81   } else if (NativeJump::is_jump_at(inst_loc)) {

  41   //   share set-hi instructions between addresses that differ by a small
  42   //   offset (e.g., different static variables in the same class).
  43   //   On such machines, the "x" argument to set_value on all set-lo
  44   //   instructions must be the same as the "x" argument for the
  45   //   corresponding set-hi instructions.  The "o" arguments for the
  46   //   set-hi instructions are ignored, and must not affect the high-half
  47   //   immediate constant.  The "o" arguments for the set-lo instructions are
  48   //   added into the low-half immediate constant, and must not overflow it."
  49   //
  50   // Currently we don't support splitting of relocations, so o must be
  51   // zero:
  52   assert(o == 0, "tried to split relocations");
  53 
  54   if (!verify_only) {
  55     if (format() != 1) {
  56       nativeMovConstReg_at(addr())->set_data_plain(((intptr_t)x), code());
  57     } else {
  58       assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type,
  59              "how to encode else?");
  60       narrowOop no = (type() == relocInfo::oop_type) ?
  61         oopDesc::encode_heap_oop((oop)x) : Klass::encode_klass((Klass*)x);
  62       nativeMovConstReg_at(addr())->set_narrow_oop(no, code());
  63     }
  64   } else {
  65     assert((address) (nativeMovConstReg_at(addr())->data()) == x, "data must match");
  66   }
  67 }
  68 
  69 address Relocation::pd_call_destination(address orig_addr) {
  70   intptr_t adj = 0;
  71   address inst_loc = addr();
  72 
  73   if (orig_addr != NULL) {
  74     // We just moved this call instruction from orig_addr to addr().
  75     // This means its target will appear to have grown by addr() - orig_addr.
  76     adj = -(inst_loc - orig_addr);
  77   }
  78   if (NativeFarCall::is_far_call_at(inst_loc)) {
  79     NativeFarCall* call = nativeFarCall_at(inst_loc);
  80     return call->destination() + (intptr_t)(call->is_pcrelative() ? adj : 0);
  81   } else if (NativeJump::is_jump_at(inst_loc)) {