aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "code/codeCache.hpp"
aoqi@0: #include "code/compiledIC.hpp"
aoqi@0: #include "code/nmethod.hpp"
aoqi@0: #include "code/relocInfo.hpp"
aoqi@0: #include "memory/resourceArea.hpp"
aoqi@0: #include "runtime/stubCodeGenerator.hpp"
aoqi@0: #include "utilities/copy.hpp"
aoqi@0: 
aoqi@0: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
aoqi@0: 
aoqi@0: const RelocationHolder RelocationHolder::none; // its type is relocInfo::none
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of relocInfo
aoqi@0: 
aoqi@0: #ifdef ASSERT
aoqi@0: relocInfo::relocInfo(relocType t, int off, int f) {
aoqi@0:   assert(t != data_prefix_tag, "cannot build a prefix this way");
aoqi@0:   assert((t & type_mask) == t, "wrong type");
aoqi@0:   assert((f & format_mask) == f, "wrong format");
aoqi@0:   assert(off >= 0 && off < offset_limit(), "offset out off bounds");
aoqi@0:   assert((off & (offset_unit-1)) == 0, "misaligned offset");
aoqi@0:   (*this) = relocInfo(t, RAW_BITS, off, f);
aoqi@0: }
aoqi@0: #endif
aoqi@0: 
aoqi@0: void relocInfo::initialize(CodeSection* dest, Relocation* reloc) {
aoqi@0:   relocInfo* data = this+1;  // here's where the data might go
aoqi@0:   dest->set_locs_end(data);  // sync end: the next call may read dest.locs_end
aoqi@0:   reloc->pack_data_to(dest); // maybe write data into locs, advancing locs_end
aoqi@0:   relocInfo* data_limit = dest->locs_end();
aoqi@0:   if (data_limit > data) {
aoqi@0:     relocInfo suffix = (*this);
aoqi@0:     data_limit = this->finish_prefix((short*) data_limit);
aoqi@0:     // Finish up with the suffix.  (Hack note: pack_data_to might edit this.)
aoqi@0:     *data_limit = suffix;
aoqi@0:     dest->set_locs_end(data_limit+1);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: relocInfo* relocInfo::finish_prefix(short* prefix_limit) {
aoqi@0:   assert(sizeof(relocInfo) == sizeof(short), "change this code");
aoqi@0:   short* p = (short*)(this+1);
aoqi@0:   assert(prefix_limit >= p, "must be a valid span of data");
aoqi@0:   int plen = prefix_limit - p;
aoqi@0:   if (plen == 0) {
aoqi@0:     debug_only(_value = 0xFFFF);
aoqi@0:     return this;                         // no data: remove self completely
aoqi@0:   }
aoqi@0:   if (plen == 1 && fits_into_immediate(p[0])) {
aoqi@0:     (*this) = immediate_relocInfo(p[0]); // move data inside self
aoqi@0:     return this+1;
aoqi@0:   }
aoqi@0:   // cannot compact, so just update the count and return the limit pointer
aoqi@0:   (*this) = prefix_relocInfo(plen);   // write new datalen
aoqi@0:   assert(data() + datalen() == prefix_limit, "pointers must line up");
aoqi@0:   return (relocInfo*)prefix_limit;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void relocInfo::set_type(relocType t) {
aoqi@0:   int old_offset = addr_offset();
aoqi@0:   int old_format = format();
aoqi@0:   (*this) = relocInfo(t, old_offset, old_format);
aoqi@0:   assert(type()==(int)t, "sanity check");
aoqi@0:   assert(addr_offset()==old_offset, "sanity check");
aoqi@0:   assert(format()==old_format, "sanity check");
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void relocInfo::set_format(int f) {
aoqi@0:   int old_offset = addr_offset();
aoqi@0:   assert((f & format_mask) == f, "wrong format");
aoqi@0:   _value = (_value & ~(format_mask << offset_width)) | (f << offset_width);
aoqi@0:   assert(addr_offset()==old_offset, "sanity check");
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void relocInfo::change_reloc_info_for_address(RelocIterator *itr, address pc, relocType old_type, relocType new_type) {
aoqi@0:   bool found = false;
aoqi@0:   while (itr->next() && !found) {
aoqi@0:     if (itr->addr() == pc) {
aoqi@0:       assert(itr->type()==old_type, "wrong relocInfo type found");
aoqi@0:       itr->current()->set_type(new_type);
aoqi@0:       found=true;
aoqi@0:     }
aoqi@0:   }
aoqi@0:   assert(found, "no relocInfo found for pc");
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void relocInfo::remove_reloc_info_for_address(RelocIterator *itr, address pc, relocType old_type) {
aoqi@0:   change_reloc_info_for_address(itr, pc, old_type, none);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // ----------------------------------------------------------------------------------------------------
aoqi@0: // Implementation of RelocIterator
aoqi@0: 
aoqi@0: void RelocIterator::initialize(nmethod* nm, address begin, address limit) {
aoqi@0:   initialize_misc();
aoqi@0: 
aoqi@0:   if (nm == NULL && begin != NULL) {
aoqi@0:     // allow nmethod to be deduced from beginning address
aoqi@0:     CodeBlob* cb = CodeCache::find_blob(begin);
aoqi@0:     nm = cb->as_nmethod_or_null();
aoqi@0:   }
aoqi@0:   assert(nm != NULL, "must be able to deduce nmethod from other arguments");
aoqi@0: 
aoqi@0:   _code    = nm;
aoqi@0:   _current = nm->relocation_begin() - 1;
aoqi@0:   _end     = nm->relocation_end();
aoqi@0:   _addr    = nm->content_begin();
aoqi@0: 
aoqi@0:   // Initialize code sections.
aoqi@0:   _section_start[CodeBuffer::SECT_CONSTS] = nm->consts_begin();
aoqi@0:   _section_start[CodeBuffer::SECT_INSTS ] = nm->insts_begin() ;
aoqi@0:   _section_start[CodeBuffer::SECT_STUBS ] = nm->stub_begin()  ;
aoqi@0: 
aoqi@0:   _section_end  [CodeBuffer::SECT_CONSTS] = nm->consts_end()  ;
aoqi@0:   _section_end  [CodeBuffer::SECT_INSTS ] = nm->insts_end()   ;
aoqi@0:   _section_end  [CodeBuffer::SECT_STUBS ] = nm->stub_end()    ;
aoqi@0: 
aoqi@0:   assert(!has_current(), "just checking");
aoqi@0:   assert(begin == NULL || begin >= nm->code_begin(), "in bounds");
aoqi@0:   assert(limit == NULL || limit <= nm->code_end(),   "in bounds");
aoqi@0:   set_limits(begin, limit);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: RelocIterator::RelocIterator(CodeSection* cs, address begin, address limit) {
aoqi@0:   initialize_misc();
aoqi@0: 
aoqi@0:   _current = cs->locs_start()-1;
aoqi@0:   _end     = cs->locs_end();
aoqi@0:   _addr    = cs->start();
aoqi@0:   _code    = NULL; // Not cb->blob();
aoqi@0: 
aoqi@0:   CodeBuffer* cb = cs->outer();
aoqi@0:   assert((int) SECT_LIMIT == CodeBuffer::SECT_LIMIT, "my copy must be equal");
aoqi@0:   for (int n = (int) CodeBuffer::SECT_FIRST; n < (int) CodeBuffer::SECT_LIMIT; n++) {
aoqi@0:     CodeSection* cs = cb->code_section(n);
aoqi@0:     _section_start[n] = cs->start();
aoqi@0:     _section_end  [n] = cs->end();
aoqi@0:   }
aoqi@0: 
aoqi@0:   assert(!has_current(), "just checking");
aoqi@0: 
aoqi@0:   assert(begin == NULL || begin >= cs->start(), "in bounds");
aoqi@0:   assert(limit == NULL || limit <= cs->end(),   "in bounds");
aoqi@0:   set_limits(begin, limit);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: enum { indexCardSize = 128 };
aoqi@0: struct RelocIndexEntry {
aoqi@0:   jint addr_offset;          // offset from header_end of an addr()
aoqi@0:   jint reloc_offset;         // offset from header_end of a relocInfo (prefix)
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: bool RelocIterator::addr_in_const() const {
aoqi@0:   const int n = CodeBuffer::SECT_CONSTS;
aoqi@0:   return section_start(n) <= addr() && addr() < section_end(n);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: static inline int num_cards(int code_size) {
aoqi@0:   return (code_size-1) / indexCardSize;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: int RelocIterator::locs_and_index_size(int code_size, int locs_size) {
aoqi@0:   if (!UseRelocIndex)  return locs_size;   // no index
aoqi@0:   code_size = round_to(code_size, oopSize);
aoqi@0:   locs_size = round_to(locs_size, oopSize);
aoqi@0:   int index_size = num_cards(code_size) * sizeof(RelocIndexEntry);
aoqi@0:   // format of indexed relocs:
aoqi@0:   //   relocation_begin:   relocInfo ...
aoqi@0:   //   index:              (addr,reloc#) ...
aoqi@0:   //                       indexSize           :relocation_end
aoqi@0:   return locs_size + index_size + BytesPerInt;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void RelocIterator::create_index(relocInfo* dest_begin, int dest_count, relocInfo* dest_end) {
aoqi@0:   address relocation_begin = (address)dest_begin;
aoqi@0:   address relocation_end   = (address)dest_end;
aoqi@0:   int     total_size       = relocation_end - relocation_begin;
aoqi@0:   int     locs_size        = dest_count * sizeof(relocInfo);
aoqi@0:   if (!UseRelocIndex) {
aoqi@0:     Copy::fill_to_bytes(relocation_begin + locs_size, total_size-locs_size, 0);
aoqi@0:     return;
aoqi@0:   }
aoqi@0:   int     index_size       = total_size - locs_size - BytesPerInt;      // find out how much space is left
aoqi@0:   int     ncards           = index_size / sizeof(RelocIndexEntry);
aoqi@0:   assert(total_size == locs_size + index_size + BytesPerInt, "checkin'");
aoqi@0:   assert(index_size >= 0 && index_size % sizeof(RelocIndexEntry) == 0, "checkin'");
aoqi@0:   jint*   index_size_addr  = (jint*)relocation_end - 1;
aoqi@0: 
aoqi@0:   assert(sizeof(jint) == BytesPerInt, "change this code");
aoqi@0: 
aoqi@0:   *index_size_addr = index_size;
aoqi@0:   if (index_size != 0) {
aoqi@0:     assert(index_size > 0, "checkin'");
aoqi@0: 
aoqi@0:     RelocIndexEntry* index = (RelocIndexEntry *)(relocation_begin + locs_size);
aoqi@0:     assert(index == (RelocIndexEntry*)index_size_addr - ncards, "checkin'");
aoqi@0: 
aoqi@0:     // walk over the relocations, and fill in index entries as we go
aoqi@0:     RelocIterator iter;
aoqi@0:     const address    initial_addr    = NULL;
aoqi@0:     relocInfo* const initial_current = dest_begin - 1;  // biased by -1 like elsewhere
aoqi@0: 
aoqi@0:     iter._code    = NULL;
aoqi@0:     iter._addr    = initial_addr;
aoqi@0:     iter._limit   = (address)(intptr_t)(ncards * indexCardSize);
aoqi@0:     iter._current = initial_current;
aoqi@0:     iter._end     = dest_begin + dest_count;
aoqi@0: 
aoqi@0:     int i = 0;
aoqi@0:     address next_card_addr = (address)indexCardSize;
aoqi@0:     int addr_offset = 0;
aoqi@0:     int reloc_offset = 0;
aoqi@0:     while (true) {
aoqi@0:       // Checkpoint the iterator before advancing it.
aoqi@0:       addr_offset  = iter._addr    - initial_addr;
aoqi@0:       reloc_offset = iter._current - initial_current;
aoqi@0:       if (!iter.next())  break;
aoqi@0:       while (iter.addr() >= next_card_addr) {
aoqi@0:         index[i].addr_offset  = addr_offset;
aoqi@0:         index[i].reloc_offset = reloc_offset;
aoqi@0:         i++;
aoqi@0:         next_card_addr += indexCardSize;
aoqi@0:       }
aoqi@0:     }
aoqi@0:     while (i < ncards) {
aoqi@0:       index[i].addr_offset  = addr_offset;
aoqi@0:       index[i].reloc_offset = reloc_offset;
aoqi@0:       i++;
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void RelocIterator::set_limits(address begin, address limit) {
aoqi@0:   int index_size = 0;
aoqi@0:   if (UseRelocIndex && _code != NULL) {
aoqi@0:     index_size = ((jint*)_end)[-1];
aoqi@0:     _end = (relocInfo*)( (address)_end - index_size - BytesPerInt );
aoqi@0:   }
aoqi@0: 
aoqi@0:   _limit = limit;
aoqi@0: 
aoqi@0:   // the limit affects this next stuff:
aoqi@0:   if (begin != NULL) {
aoqi@0: #ifdef ASSERT
aoqi@0:     // In ASSERT mode we do not actually use the index, but simply
aoqi@0:     // check that its contents would have led us to the right answer.
aoqi@0:     address addrCheck = _addr;
aoqi@0:     relocInfo* infoCheck = _current;
aoqi@0: #endif // ASSERT
aoqi@0:     if (index_size > 0) {
aoqi@0:       // skip ahead
aoqi@0:       RelocIndexEntry* index       = (RelocIndexEntry*)_end;
aoqi@0:       RelocIndexEntry* index_limit = (RelocIndexEntry*)((address)index + index_size);
aoqi@0:       assert(_addr == _code->code_begin(), "_addr must be unadjusted");
aoqi@0:       int card = (begin - _addr) / indexCardSize;
aoqi@0:       if (card > 0) {
aoqi@0:         if (index+card-1 < index_limit)  index += card-1;
aoqi@0:         else                             index = index_limit - 1;
aoqi@0: #ifdef ASSERT
aoqi@0:         addrCheck = _addr    + index->addr_offset;
aoqi@0:         infoCheck = _current + index->reloc_offset;
aoqi@0: #else
aoqi@0:         // Advance the iterator immediately to the last valid state
aoqi@0:         // for the previous card.  Calling "next" will then advance
aoqi@0:         // it to the first item on the required card.
aoqi@0:         _addr    += index->addr_offset;
aoqi@0:         _current += index->reloc_offset;
aoqi@0: #endif // ASSERT
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     relocInfo* backup;
aoqi@0:     address    backup_addr;
aoqi@0:     while (true) {
aoqi@0:       backup      = _current;
aoqi@0:       backup_addr = _addr;
aoqi@0: #ifdef ASSERT
aoqi@0:       if (backup == infoCheck) {
aoqi@0:         assert(backup_addr == addrCheck, "must match"); addrCheck = NULL; infoCheck = NULL;
aoqi@0:       } else {
aoqi@0:         assert(addrCheck == NULL || backup_addr <= addrCheck, "must not pass addrCheck");
aoqi@0:       }
aoqi@0: #endif // ASSERT
aoqi@0:       if (!next() || addr() >= begin) break;
aoqi@0:     }
aoqi@0:     assert(addrCheck == NULL || addrCheck == backup_addr, "must have matched addrCheck");
aoqi@0:     assert(infoCheck == NULL || infoCheck == backup,      "must have matched infoCheck");
aoqi@0:     // At this point, either we are at the first matching record,
aoqi@0:     // or else there is no such record, and !has_current().
aoqi@0:     // In either case, revert to the immediatly preceding state.
aoqi@0:     _current = backup;
aoqi@0:     _addr    = backup_addr;
aoqi@0:     set_has_current(false);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void RelocIterator::set_limit(address limit) {
aoqi@0:   address code_end = (address)code() + code()->size();
aoqi@0:   assert(limit == NULL || limit <= code_end, "in bounds");
aoqi@0:   _limit = limit;
aoqi@0: }
aoqi@0: 
aoqi@0: // All the strange bit-encodings are in here.
aoqi@0: // The idea is to encode relocation data which are small integers
aoqi@0: // very efficiently (a single extra halfword).  Larger chunks of
aoqi@0: // relocation data need a halfword header to hold their size.
aoqi@0: void RelocIterator::advance_over_prefix() {
aoqi@0:   if (_current->is_datalen()) {
aoqi@0:     _data    = (short*) _current->data();
aoqi@0:     _datalen =          _current->datalen();
aoqi@0:     _current += _datalen + 1;   // skip the embedded data & header
aoqi@0:   } else {
aoqi@0:     _databuf = _current->immediate();
aoqi@0:     _data = &_databuf;
aoqi@0:     _datalen = 1;
aoqi@0:     _current++;                 // skip the header
aoqi@0:   }
aoqi@0:   // The client will see the following relocInfo, whatever that is.
aoqi@0:   // It is the reloc to which the preceding data applies.
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void RelocIterator::initialize_misc() {
aoqi@0:   set_has_current(false);
aoqi@0:   for (int i = (int) CodeBuffer::SECT_FIRST; i < (int) CodeBuffer::SECT_LIMIT; i++) {
aoqi@0:     _section_start[i] = NULL;  // these will be lazily computed, if needed
aoqi@0:     _section_end  [i] = NULL;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: Relocation* RelocIterator::reloc() {
aoqi@0:   // (take the "switch" out-of-line)
aoqi@0:   relocInfo::relocType t = type();
aoqi@0:   if (false) {}
aoqi@0:   #define EACH_TYPE(name)                             \
aoqi@0:   else if (t == relocInfo::name##_type) {             \
aoqi@0:     return name##_reloc();                            \
aoqi@0:   }
aoqi@0:   APPLY_TO_RELOCATIONS(EACH_TYPE);
aoqi@0:   #undef EACH_TYPE
aoqi@0:   assert(t == relocInfo::none, "must be padding");
aoqi@0:   return new(_rh) Relocation();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //////// Methods for flyweight Relocation types
aoqi@0: 
aoqi@0: 
aoqi@0: RelocationHolder RelocationHolder::plus(int offset) const {
aoqi@0:   if (offset != 0) {
aoqi@0:     switch (type()) {
aoqi@0:     case relocInfo::none:
aoqi@0:       break;
aoqi@0:     case relocInfo::oop_type:
aoqi@0:       {
aoqi@0:         oop_Relocation* r = (oop_Relocation*)reloc();
aoqi@0:         return oop_Relocation::spec(r->oop_index(), r->offset() + offset);
aoqi@0:       }
aoqi@0:     case relocInfo::metadata_type:
aoqi@0:       {
aoqi@0:         metadata_Relocation* r = (metadata_Relocation*)reloc();
aoqi@0:         return metadata_Relocation::spec(r->metadata_index(), r->offset() + offset);
aoqi@0:       }
aoqi@0:     default:
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0:   }
aoqi@0:   return (*this);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Relocation::guarantee_size() {
aoqi@0:   guarantee(false, "Make _relocbuf bigger!");
aoqi@0: }
aoqi@0: 
aoqi@0:     // some relocations can compute their own values
aoqi@0: address Relocation::value() {
aoqi@0:   ShouldNotReachHere();
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void Relocation::set_value(address x) {
aoqi@0:   ShouldNotReachHere();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: RelocationHolder Relocation::spec_simple(relocInfo::relocType rtype) {
aoqi@0:   if (rtype == relocInfo::none)  return RelocationHolder::none;
aoqi@0:   relocInfo ri = relocInfo(rtype, 0);
aoqi@0:   RelocIterator itr;
aoqi@0:   itr.set_current(ri);
aoqi@0:   itr.reloc();
aoqi@0:   return itr._rh;
aoqi@0: }
aoqi@0: 
aoqi@0: int32_t Relocation::runtime_address_to_index(address runtime_address) {
aoqi@0:   assert(!is_reloc_index((intptr_t)runtime_address), "must not look like an index");
aoqi@0: 
aoqi@0:   if (runtime_address == NULL)  return 0;
aoqi@0: 
aoqi@0:   StubCodeDesc* p = StubCodeDesc::desc_for(runtime_address);
aoqi@0:   if (p != NULL && p->begin() == runtime_address) {
aoqi@0:     assert(is_reloc_index(p->index()), "there must not be too many stubs");
aoqi@0:     return (int32_t)p->index();
aoqi@0:   } else {
aoqi@0:     // Known "miscellaneous" non-stub pointers:
aoqi@0:     // os::get_polling_page(), SafepointSynchronize::address_of_state()
aoqi@0:     if (PrintRelocations) {
aoqi@0:       tty->print_cr("random unregistered address in relocInfo: " INTPTR_FORMAT, runtime_address);
aoqi@0:     }
aoqi@0: #ifndef _LP64
aoqi@0:     return (int32_t) (intptr_t)runtime_address;
aoqi@0: #else
aoqi@0:     // didn't fit return non-index
aoqi@0:     return -1;
aoqi@0: #endif /* _LP64 */
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: address Relocation::index_to_runtime_address(int32_t index) {
aoqi@0:   if (index == 0)  return NULL;
aoqi@0: 
aoqi@0:   if (is_reloc_index(index)) {
aoqi@0:     StubCodeDesc* p = StubCodeDesc::desc_for_index(index);
aoqi@0:     assert(p != NULL, "there must be a stub for this index");
aoqi@0:     return p->begin();
aoqi@0:   } else {
aoqi@0: #ifndef _LP64
aoqi@0:     // this only works on 32bit machines
aoqi@0:     return (address) ((intptr_t) index);
aoqi@0: #else
aoqi@0:     fatal("Relocation::index_to_runtime_address, int32_t not pointer sized");
aoqi@0:     return NULL;
aoqi@0: #endif /* _LP64 */
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: address Relocation::old_addr_for(address newa,
aoqi@0:                                  const CodeBuffer* src, CodeBuffer* dest) {
aoqi@0:   int sect = dest->section_index_of(newa);
aoqi@0:   guarantee(sect != CodeBuffer::SECT_NONE, "lost track of this address");
aoqi@0:   address ostart = src->code_section(sect)->start();
aoqi@0:   address nstart = dest->code_section(sect)->start();
aoqi@0:   return ostart + (newa - nstart);
aoqi@0: }
aoqi@0: 
aoqi@0: address Relocation::new_addr_for(address olda,
aoqi@0:                                  const CodeBuffer* src, CodeBuffer* dest) {
aoqi@0:   debug_only(const CodeBuffer* src0 = src);
aoqi@0:   int sect = CodeBuffer::SECT_NONE;
aoqi@0:   // Look for olda in the source buffer, and all previous incarnations
aoqi@0:   // if the source buffer has been expanded.
aoqi@0:   for (; src != NULL; src = src->before_expand()) {
aoqi@0:     sect = src->section_index_of(olda);
aoqi@0:     if (sect != CodeBuffer::SECT_NONE)  break;
aoqi@0:   }
aoqi@0:   guarantee(sect != CodeBuffer::SECT_NONE, "lost track of this address");
aoqi@0:   address ostart = src->code_section(sect)->start();
aoqi@0:   address nstart = dest->code_section(sect)->start();
aoqi@0:   return nstart + (olda - ostart);
aoqi@0: }
aoqi@0: 
aoqi@0: void Relocation::normalize_address(address& addr, const CodeSection* dest, bool allow_other_sections) {
aoqi@0:   address addr0 = addr;
aoqi@0:   if (addr0 == NULL || dest->allocates2(addr0))  return;
aoqi@0:   CodeBuffer* cb = dest->outer();
aoqi@0:   addr = new_addr_for(addr0, cb, cb);
aoqi@0:   assert(allow_other_sections || dest->contains2(addr),
aoqi@0:          "addr must be in required section");
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void CallRelocation::set_destination(address x) {
aoqi@0:   pd_set_call_destination(x);
aoqi@0: }
aoqi@0: 
aoqi@0: void CallRelocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@0:   // Usually a self-relative reference to an external routine.
aoqi@0:   // On some platforms, the reference is absolute (not self-relative).
aoqi@0:   // The enhanced use of pd_call_destination sorts this all out.
aoqi@0:   address orig_addr = old_addr_for(addr(), src, dest);
aoqi@0:   address callee    = pd_call_destination(orig_addr);
aoqi@0:   // Reassert the callee address, this time in the new copy of the code.
aoqi@0:   pd_set_call_destination(callee);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: //// pack/unpack methods
aoqi@0: 
aoqi@0: void oop_Relocation::pack_data_to(CodeSection* dest) {
aoqi@0:   short* p = (short*) dest->locs_end();
aoqi@0:   p = pack_2_ints_to(p, _oop_index, _offset);
aoqi@0:   dest->set_locs_end((relocInfo*) p);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void oop_Relocation::unpack_data() {
aoqi@0:   unpack_2_ints(_oop_index, _offset);
aoqi@0: }
aoqi@0: 
aoqi@0: void metadata_Relocation::pack_data_to(CodeSection* dest) {
aoqi@0:   short* p = (short*) dest->locs_end();
aoqi@0:   p = pack_2_ints_to(p, _metadata_index, _offset);
aoqi@0:   dest->set_locs_end((relocInfo*) p);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void metadata_Relocation::unpack_data() {
aoqi@0:   unpack_2_ints(_metadata_index, _offset);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void virtual_call_Relocation::pack_data_to(CodeSection* dest) {
aoqi@0:   short*  p     = (short*) dest->locs_end();
aoqi@0:   address point =          dest->locs_point();
aoqi@0: 
aoqi@0:   normalize_address(_cached_value, dest);
aoqi@0:   jint x0 = scaled_offset_null_special(_cached_value, point);
aoqi@0:   p = pack_1_int_to(p, x0);
aoqi@0:   dest->set_locs_end((relocInfo*) p);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void virtual_call_Relocation::unpack_data() {
aoqi@0:   jint x0 = unpack_1_int();
aoqi@0:   address point = addr();
aoqi@0:   _cached_value = x0==0? NULL: address_from_scaled_offset(x0, point);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void static_stub_Relocation::pack_data_to(CodeSection* dest) {
aoqi@0:   short* p = (short*) dest->locs_end();
aoqi@0:   CodeSection* insts = dest->outer()->insts();
aoqi@0:   normalize_address(_static_call, insts);
aoqi@0:   p = pack_1_int_to(p, scaled_offset(_static_call, insts->start()));
aoqi@0:   dest->set_locs_end((relocInfo*) p);
aoqi@0: }
aoqi@0: 
aoqi@0: void static_stub_Relocation::unpack_data() {
aoqi@0:   address base = binding()->section_start(CodeBuffer::SECT_INSTS);
aoqi@0:   _static_call = address_from_scaled_offset(unpack_1_int(), base);
aoqi@0: }
aoqi@0: 
aoqi@0: void trampoline_stub_Relocation::pack_data_to(CodeSection* dest ) {
aoqi@0:   short* p = (short*) dest->locs_end();
aoqi@0:   CodeSection* insts = dest->outer()->insts();
aoqi@0:   normalize_address(_owner, insts);
aoqi@0:   p = pack_1_int_to(p, scaled_offset(_owner, insts->start()));
aoqi@0:   dest->set_locs_end((relocInfo*) p);
aoqi@0: }
aoqi@0: 
aoqi@0: void trampoline_stub_Relocation::unpack_data() {
aoqi@0:   address base = binding()->section_start(CodeBuffer::SECT_INSTS);
aoqi@0:   _owner = address_from_scaled_offset(unpack_1_int(), base);
aoqi@0: }
aoqi@0: 
aoqi@0: void external_word_Relocation::pack_data_to(CodeSection* dest) {
aoqi@0:   short* p = (short*) dest->locs_end();
aoqi@0:   int32_t index = runtime_address_to_index(_target);
aoqi@0: #ifndef _LP64
aoqi@0:   p = pack_1_int_to(p, index);
aoqi@0: #else
aoqi@0:   if (is_reloc_index(index)) {
aoqi@0:     p = pack_2_ints_to(p, index, 0);
aoqi@0:   } else {
aoqi@0:     jlong t = (jlong) _target;
aoqi@0:     int32_t lo = low(t);
aoqi@0:     int32_t hi = high(t);
aoqi@0:     p = pack_2_ints_to(p, lo, hi);
aoqi@0:     DEBUG_ONLY(jlong t1 = jlong_from(hi, lo));
aoqi@0:     assert(!is_reloc_index(t1) && (address) t1 == _target, "not symmetric");
aoqi@0:   }
aoqi@0: #endif /* _LP64 */
aoqi@0:   dest->set_locs_end((relocInfo*) p);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void external_word_Relocation::unpack_data() {
aoqi@0: #ifndef _LP64
aoqi@0:   _target = index_to_runtime_address(unpack_1_int());
aoqi@0: #else
aoqi@0:   int32_t lo, hi;
aoqi@0:   unpack_2_ints(lo, hi);
aoqi@0:   jlong t = jlong_from(hi, lo);;
aoqi@0:   if (is_reloc_index(t)) {
aoqi@0:     _target = index_to_runtime_address(t);
aoqi@0:   } else {
aoqi@0:     _target = (address) t;
aoqi@0:   }
aoqi@0: #endif /* _LP64 */
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void internal_word_Relocation::pack_data_to(CodeSection* dest) {
aoqi@0:   short* p = (short*) dest->locs_end();
aoqi@0:   normalize_address(_target, dest, true);
aoqi@0: 
aoqi@0:   // Check whether my target address is valid within this section.
aoqi@0:   // If not, strengthen the relocation type to point to another section.
aoqi@0:   int sindex = _section;
aoqi@0:   if (sindex == CodeBuffer::SECT_NONE && _target != NULL
aoqi@0:       && (!dest->allocates(_target) || _target == dest->locs_point())) {
aoqi@0:     sindex = dest->outer()->section_index_of(_target);
aoqi@0:     guarantee(sindex != CodeBuffer::SECT_NONE, "must belong somewhere");
aoqi@0:     relocInfo* base = dest->locs_end() - 1;
aoqi@0:     assert(base->type() == this->type(), "sanity");
aoqi@0:     // Change the written type, to be section_word_type instead.
aoqi@0:     base->set_type(relocInfo::section_word_type);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Note: An internal_word relocation cannot refer to its own instruction,
aoqi@0:   // because we reserve "0" to mean that the pointer itself is embedded
aoqi@0:   // in the code stream.  We use a section_word relocation for such cases.
aoqi@0: 
aoqi@0:   if (sindex == CodeBuffer::SECT_NONE) {
aoqi@0:     assert(type() == relocInfo::internal_word_type, "must be base class");
aoqi@0:     guarantee(_target == NULL || dest->allocates2(_target), "must be within the given code section");
aoqi@0:     jint x0 = scaled_offset_null_special(_target, dest->locs_point());
aoqi@0:     assert(!(x0 == 0 && _target != NULL), "correct encoding of null target");
aoqi@0:     p = pack_1_int_to(p, x0);
aoqi@0:   } else {
aoqi@0:     assert(_target != NULL, "sanity");
aoqi@0:     CodeSection* sect = dest->outer()->code_section(sindex);
aoqi@0:     guarantee(sect->allocates2(_target), "must be in correct section");
aoqi@0:     address base = sect->start();
aoqi@0:     jint offset = scaled_offset(_target, base);
aoqi@0:     assert((uint)sindex < (uint)CodeBuffer::SECT_LIMIT, "sanity");
aoqi@0:     assert(CodeBuffer::SECT_LIMIT <= (1 << section_width), "section_width++");
aoqi@0:     p = pack_1_int_to(p, (offset << section_width) | sindex);
aoqi@0:   }
aoqi@0: 
aoqi@0:   dest->set_locs_end((relocInfo*) p);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void internal_word_Relocation::unpack_data() {
aoqi@0:   jint x0 = unpack_1_int();
aoqi@0:   _target = x0==0? NULL: address_from_scaled_offset(x0, addr());
aoqi@0:   _section = CodeBuffer::SECT_NONE;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void section_word_Relocation::unpack_data() {
aoqi@0:   jint    x      = unpack_1_int();
aoqi@0:   jint    offset = (x >> section_width);
aoqi@0:   int     sindex = (x & ((1<<section_width)-1));
aoqi@0:   address base   = binding()->section_start(sindex);
aoqi@0: 
aoqi@0:   _section = sindex;
aoqi@0:   _target  = address_from_scaled_offset(offset, base);
aoqi@0: }
aoqi@0: 
aoqi@0: //// miscellaneous methods
aoqi@0: oop* oop_Relocation::oop_addr() {
aoqi@0:   int n = _oop_index;
aoqi@0:   if (n == 0) {
aoqi@0:     // oop is stored in the code stream
aoqi@0:     return (oop*) pd_address_in_code();
aoqi@0:   } else {
aoqi@0:     // oop is stored in table at nmethod::oops_begin
aoqi@0:     return code()->oop_addr_at(n);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: oop oop_Relocation::oop_value() {
aoqi@0:   oop v = *oop_addr();
aoqi@0:   // clean inline caches store a special pseudo-null
aoqi@0:   if (v == (oop)Universe::non_oop_word())  v = NULL;
aoqi@0:   return v;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void oop_Relocation::fix_oop_relocation() {
aoqi@0:   if (!oop_is_immediate()) {
aoqi@0:     // get the oop from the pool, and re-insert it into the instruction:
aoqi@0:     set_value(value());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void oop_Relocation::verify_oop_relocation() {
aoqi@0:   if (!oop_is_immediate()) {
aoqi@0:     // get the oop from the pool, and re-insert it into the instruction:
aoqi@0:     verify_value(value());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: // meta data versions
aoqi@0: Metadata** metadata_Relocation::metadata_addr() {
aoqi@0:   int n = _metadata_index;
aoqi@0:   if (n == 0) {
aoqi@0:     // metadata is stored in the code stream
aoqi@0:     return (Metadata**) pd_address_in_code();
aoqi@0:     } else {
aoqi@0:     // metadata is stored in table at nmethod::metadatas_begin
aoqi@0:     return code()->metadata_addr_at(n);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0: 
aoqi@0: Metadata* metadata_Relocation::metadata_value() {
aoqi@0:   Metadata* v = *metadata_addr();
aoqi@0:   // clean inline caches store a special pseudo-null
aoqi@0:   if (v == (Metadata*)Universe::non_oop_word())  v = NULL;
aoqi@0:   return v;
aoqi@0:   }
aoqi@0: 
aoqi@0: 
aoqi@0: void metadata_Relocation::fix_metadata_relocation() {
aoqi@0:   if (!metadata_is_immediate()) {
aoqi@0:     // get the metadata from the pool, and re-insert it into the instruction:
aoqi@0:     pd_fix_value(value());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void metadata_Relocation::verify_metadata_relocation() {
aoqi@0:   if (!metadata_is_immediate()) {
aoqi@0:     // get the metadata from the pool, and re-insert it into the instruction:
aoqi@0:     verify_value(value());
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: address virtual_call_Relocation::cached_value() {
aoqi@0:   assert(_cached_value != NULL && _cached_value < addr(), "must precede ic_call");
aoqi@0:   return _cached_value;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void virtual_call_Relocation::clear_inline_cache() {
aoqi@0:   // No stubs for ICs
aoqi@0:   // Clean IC
aoqi@0:   ResourceMark rm;
aoqi@0:   CompiledIC* icache = CompiledIC_at(this);
aoqi@0:   icache->set_to_clean();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void opt_virtual_call_Relocation::clear_inline_cache() {
aoqi@0:   // No stubs for ICs
aoqi@0:   // Clean IC
aoqi@0:   ResourceMark rm;
aoqi@0:   CompiledIC* icache = CompiledIC_at(this);
aoqi@0:   icache->set_to_clean();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: address opt_virtual_call_Relocation::static_stub() {
aoqi@0:   // search for the static stub who points back to this static call
aoqi@0:   address static_call_addr = addr();
aoqi@0:   RelocIterator iter(code());
aoqi@0:   while (iter.next()) {
aoqi@0:     if (iter.type() == relocInfo::static_stub_type) {
aoqi@0:       if (iter.static_stub_reloc()->static_call() == static_call_addr) {
aoqi@0:         return iter.addr();
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void static_call_Relocation::clear_inline_cache() {
aoqi@0:   // Safe call site info
aoqi@0:   CompiledStaticCall* handler = compiledStaticCall_at(this);
aoqi@0:   handler->set_to_clean();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: address static_call_Relocation::static_stub() {
aoqi@0:   // search for the static stub who points back to this static call
aoqi@0:   address static_call_addr = addr();
aoqi@0:   RelocIterator iter(code());
aoqi@0:   while (iter.next()) {
aoqi@0:     if (iter.type() == relocInfo::static_stub_type) {
aoqi@0:       if (iter.static_stub_reloc()->static_call() == static_call_addr) {
aoqi@0:         return iter.addr();
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: // Finds the trampoline address for a call. If no trampoline stub is
aoqi@0: // found NULL is returned which can be handled by the caller.
aoqi@0: address trampoline_stub_Relocation::get_trampoline_for(address call, nmethod* code) {
aoqi@0:   // There are no relocations available when the code gets relocated
aoqi@0:   // because of CodeBuffer expansion.
aoqi@0:   if (code->relocation_size() == 0)
aoqi@0:     return NULL;
aoqi@0: 
aoqi@0:   RelocIterator iter(code, call);
aoqi@0:   while (iter.next()) {
aoqi@0:     if (iter.type() == relocInfo::trampoline_stub_type) {
aoqi@0:       if (iter.trampoline_stub_reloc()->owner() == call) {
aoqi@0:         return iter.addr();
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: void static_stub_Relocation::clear_inline_cache() {
aoqi@0:   // Call stub is only used when calling the interpreted code.
aoqi@0:   // It does not really need to be cleared, except that we want to clean out the methodoop.
aoqi@0:   CompiledStaticCall::set_stub_to_clean(this);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void external_word_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@0:   address target = _target;
aoqi@0:   if (target == NULL) {
aoqi@0:     // An absolute embedded reference to an external location,
aoqi@0:     // which means there is nothing to fix here.
aoqi@0:     return;
aoqi@0:   }
aoqi@0:   // Probably this reference is absolute, not relative, so the
aoqi@0:   // following is probably a no-op.
aoqi@0:   assert(src->section_index_of(target) == CodeBuffer::SECT_NONE, "sanity");
aoqi@0:   set_value(target);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: address external_word_Relocation::target() {
aoqi@0:   address target = _target;
aoqi@0:   if (target == NULL) {
aoqi@0:     target = pd_get_address_from_code();
aoqi@0:   }
aoqi@0:   return target;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void internal_word_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@0:   address target = _target;
aoqi@0:   if (target == NULL) {
aoqi@0:     if (addr_in_const()) {
aoqi@0:       target = new_addr_for(*(address*)addr(), src, dest);
aoqi@0:     } else {
aoqi@0:       target = new_addr_for(pd_get_address_from_code(), src, dest);
aoqi@0:     }
aoqi@0:   }
aoqi@0:   set_value(target);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: address internal_word_Relocation::target() {
aoqi@0:   address target = _target;
aoqi@0:   if (target == NULL) {
aoqi@0:     target = pd_get_address_from_code();
aoqi@0:   }
aoqi@0:   return target;
aoqi@0: }
aoqi@0: 
aoqi@0: //---------------------------------------------------------------------------------
aoqi@0: // Non-product code
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0: 
aoqi@0: static const char* reloc_type_string(relocInfo::relocType t) {
aoqi@0:   switch (t) {
aoqi@0:   #define EACH_CASE(name) \
aoqi@0:   case relocInfo::name##_type: \
aoqi@0:     return #name;
aoqi@0: 
aoqi@0:   APPLY_TO_RELOCATIONS(EACH_CASE);
aoqi@0:   #undef EACH_CASE
aoqi@0: 
aoqi@0:   case relocInfo::none:
aoqi@0:     return "none";
aoqi@0:   case relocInfo::data_prefix_tag:
aoqi@0:     return "prefix";
aoqi@0:   default:
aoqi@0:     return "UNKNOWN RELOC TYPE";
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void RelocIterator::print_current() {
aoqi@0:   if (!has_current()) {
aoqi@0:     tty->print_cr("(no relocs)");
aoqi@0:     return;
aoqi@0:   }
aoqi@0:   tty->print("relocInfo@" INTPTR_FORMAT " [type=%d(%s) addr=" INTPTR_FORMAT " offset=%d",
aoqi@0:              _current, type(), reloc_type_string((relocInfo::relocType) type()), _addr, _current->addr_offset());
aoqi@0:   if (current()->format() != 0)
aoqi@0:     tty->print(" format=%d", current()->format());
aoqi@0:   if (datalen() == 1) {
aoqi@0:     tty->print(" data=%d", data()[0]);
aoqi@0:   } else if (datalen() > 0) {
aoqi@0:     tty->print(" data={");
aoqi@0:     for (int i = 0; i < datalen(); i++) {
aoqi@0:       tty->print("%04x", data()[i] & 0xFFFF);
aoqi@0:     }
aoqi@0:     tty->print("}");
aoqi@0:   }
aoqi@0:   tty->print("]");
aoqi@0:   switch (type()) {
aoqi@0:   case relocInfo::oop_type:
aoqi@0:     {
aoqi@0:       oop_Relocation* r = oop_reloc();
aoqi@0:       oop* oop_addr  = NULL;
aoqi@0:       oop  raw_oop   = NULL;
aoqi@0:       oop  oop_value = NULL;
aoqi@0:       if (code() != NULL || r->oop_is_immediate()) {
aoqi@0:         oop_addr  = r->oop_addr();
aoqi@0:         raw_oop   = *oop_addr;
aoqi@0:         oop_value = r->oop_value();
aoqi@0:       }
aoqi@0:       tty->print(" | [oop_addr=" INTPTR_FORMAT " *=" INTPTR_FORMAT " offset=%d]",
aoqi@0:                  oop_addr, (address)raw_oop, r->offset());
aoqi@0:       // Do not print the oop by default--we want this routine to
aoqi@0:       // work even during GC or other inconvenient times.
aoqi@0:       if (WizardMode && oop_value != NULL) {
aoqi@0:         tty->print("oop_value=" INTPTR_FORMAT ": ", (address)oop_value);
aoqi@0:         oop_value->print_value_on(tty);
aoqi@0:       }
aoqi@0:       break;
aoqi@0:     }
aoqi@0:   case relocInfo::metadata_type:
aoqi@0:     {
aoqi@0:       metadata_Relocation* r = metadata_reloc();
aoqi@0:       Metadata** metadata_addr  = NULL;
aoqi@0:       Metadata*    raw_metadata   = NULL;
aoqi@0:       Metadata*    metadata_value = NULL;
aoqi@0:       if (code() != NULL || r->metadata_is_immediate()) {
aoqi@0:         metadata_addr  = r->metadata_addr();
aoqi@0:         raw_metadata   = *metadata_addr;
aoqi@0:         metadata_value = r->metadata_value();
aoqi@0:       }
aoqi@0:       tty->print(" | [metadata_addr=" INTPTR_FORMAT " *=" INTPTR_FORMAT " offset=%d]",
aoqi@0:                  metadata_addr, (address)raw_metadata, r->offset());
aoqi@0:       if (metadata_value != NULL) {
aoqi@0:         tty->print("metadata_value=" INTPTR_FORMAT ": ", (address)metadata_value);
aoqi@0:         metadata_value->print_value_on(tty);
aoqi@0:       }
aoqi@0:       break;
aoqi@0:     }
aoqi@0:   case relocInfo::external_word_type:
aoqi@0:   case relocInfo::internal_word_type:
aoqi@0:   case relocInfo::section_word_type:
aoqi@0:     {
aoqi@0:       DataRelocation* r = (DataRelocation*) reloc();
aoqi@0:       tty->print(" | [target=" INTPTR_FORMAT "]", r->value()); //value==target
aoqi@0:       break;
aoqi@0:     }
aoqi@0:   case relocInfo::static_call_type:
aoqi@0:   case relocInfo::runtime_call_type:
aoqi@0:     {
aoqi@0:       CallRelocation* r = (CallRelocation*) reloc();
aoqi@0:       tty->print(" | [destination=" INTPTR_FORMAT "]", r->destination());
aoqi@0:       break;
aoqi@0:     }
aoqi@0:   case relocInfo::virtual_call_type:
aoqi@0:     {
aoqi@0:       virtual_call_Relocation* r = (virtual_call_Relocation*) reloc();
aoqi@0:       tty->print(" | [destination=" INTPTR_FORMAT " cached_value=" INTPTR_FORMAT "]",
aoqi@0:                  r->destination(), r->cached_value());
aoqi@0:       break;
aoqi@0:     }
aoqi@0:   case relocInfo::static_stub_type:
aoqi@0:     {
aoqi@0:       static_stub_Relocation* r = (static_stub_Relocation*) reloc();
aoqi@0:       tty->print(" | [static_call=" INTPTR_FORMAT "]", r->static_call());
aoqi@0:       break;
aoqi@0:     }
aoqi@0:   case relocInfo::trampoline_stub_type:
aoqi@0:     {
aoqi@0:       trampoline_stub_Relocation* r = (trampoline_stub_Relocation*) reloc();
aoqi@0:       tty->print(" | [trampoline owner=" INTPTR_FORMAT "]", r->owner());
aoqi@0:       break;
aoqi@0:     }
aoqi@0:   }
aoqi@0:   tty->cr();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void RelocIterator::print() {
aoqi@0:   RelocIterator save_this = (*this);
aoqi@0:   relocInfo* scan = _current;
aoqi@0:   if (!has_current())  scan += 1;  // nothing to scan here!
aoqi@0: 
aoqi@0:   bool skip_next = has_current();
aoqi@0:   bool got_next;
aoqi@0:   while (true) {
aoqi@0:     got_next = (skip_next || next());
aoqi@0:     skip_next = false;
aoqi@0: 
aoqi@0:     tty->print("         @" INTPTR_FORMAT ": ", scan);
aoqi@0:     relocInfo* newscan = _current+1;
aoqi@0:     if (!has_current())  newscan -= 1;  // nothing to scan here!
aoqi@0:     while (scan < newscan) {
aoqi@0:       tty->print("%04x", *(short*)scan & 0xFFFF);
aoqi@0:       scan++;
aoqi@0:     }
aoqi@0:     tty->cr();
aoqi@0: 
aoqi@0:     if (!got_next)  break;
aoqi@0:     print_current();
aoqi@0:   }
aoqi@0: 
aoqi@0:   (*this) = save_this;
aoqi@0: }
aoqi@0: 
aoqi@0: // For the debugger:
aoqi@0: extern "C"
aoqi@0: void print_blob_locs(nmethod* nm) {
aoqi@0:   nm->print();
aoqi@0:   RelocIterator iter(nm);
aoqi@0:   iter.print();
aoqi@0: }
aoqi@0: extern "C"
aoqi@0: void print_buf_locs(CodeBuffer* cb) {
aoqi@0:   FlagSetting fs(PrintRelocations, true);
aoqi@0:   cb->print();
aoqi@0: }
aoqi@0: #endif // !PRODUCT