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comparison src/share/vm/asm/codeBuffer.cpp @ 7197:1acccb7c0b01

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8003850: add support for constants in stub code Summary: remember the code section and switch back to the proper one when adding constants. Reviewed-by: twisti, kvn Contributed-by: goetz.lindenmaier@sap.com
author kvn
date Tue, 27 Nov 2012 17:41:38 -0800
parents a3e2f723f2a5
children cd3d6a6b95d9
comparison
equal deleted inserted replaced
7196:2aff40cb4703 7197:1acccb7c0b01
747 assert(cs->locs_start() != (relocInfo*)badAddress, 747 assert(cs->locs_start() != (relocInfo*)badAddress,
748 "this section carries no reloc storage, but reloc was attempted"); 748 "this section carries no reloc storage, but reloc was attempted");
749 749
750 // Make the new code copy use the old copy's relocations: 750 // Make the new code copy use the old copy's relocations:
751 dest_cs->initialize_locs_from(cs); 751 dest_cs->initialize_locs_from(cs);
752 752 }
753
754 // Do relocation after all sections are copied.
755 // This is necessary if the code uses constants in stubs, which are
756 // relocated when the corresponding instruction in the code (e.g., a
757 // call) is relocated. Stubs are placed behind the main code
758 // section, so that section has to be copied before relocating.
759 for (int n = (int) SECT_FIRST; n < (int)SECT_LIMIT; n++) {
760 // pull code out of each section
761 const CodeSection* cs = code_section(n);
762 if (cs->is_empty()) continue; // skip trivial section
763 CodeSection* dest_cs = dest->code_section(n);
753 { // Repair the pc relative information in the code after the move 764 { // Repair the pc relative information in the code after the move
754 RelocIterator iter(dest_cs); 765 RelocIterator iter(dest_cs);
755 while (iter.next()) { 766 while (iter.next()) {
756 iter.reloc()->fix_relocation_after_move(this, dest); 767 iter.reloc()->fix_relocation_after_move(this, dest);
757 } 768 }