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src/cpu/x86/vm/assembler_x86.cpp

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 716     case 0x89: // movw a, r
 717       debug_only(has_disp32 = true);
 718       break;
 719     case 0xC7: // movw a, #16
 720       debug_only(has_disp32 = true);
 721       tail_size = 2;  // the imm16
 722       break;
 723     case 0x0F: // several SSE/SSE2 variants
 724       ip--;    // reparse the 0x0F
 725       goto again_after_prefix;
 726     default:
 727       ShouldNotReachHere();
 728     }
 729     break;
 730 
 731   case REP8(0xB8): // movl/q r, #32/#64(oop?)
 732     if (which == end_pc_operand)  return ip + (is_64bit ? 8 : 4);
 733     // these asserts are somewhat nonsensical
 734 #ifndef _LP64
 735     assert(which == imm_operand || which == disp32_operand,
 736            err_msg("which %d is_64_bit %d ip " INTPTR_FORMAT, which, is_64bit, p2i(ip)));
 737 #else
 738     assert((which == call32_operand || which == imm_operand) && is_64bit ||
 739            which == narrow_oop_operand && !is_64bit,
 740            err_msg("which %d is_64_bit %d ip " INTPTR_FORMAT, which, is_64bit, p2i(ip)));
 741 #endif // _LP64
 742     return ip;
 743 
 744   case 0x69: // imul r, a, #32
 745   case 0xC7: // movl a, #32(oop?)
 746     tail_size = 4;
 747     debug_only(has_disp32 = true); // has both kinds of operands!
 748     break;
 749 
 750   case 0x0F: // movx..., etc.
 751     switch (0xFF & *ip++) {
 752     case 0x3A: // pcmpestri
 753       tail_size = 1;
 754     case 0x38: // ptest, pmovzxbw
 755       ip++; // skip opcode
 756       debug_only(has_disp32 = true); // has both kinds of operands!
 757       break;
 758 
 759     case 0x70: // pshufd r, r/a, #8
 760       debug_only(has_disp32 = true); // has both kinds of operands!




 716     case 0x89: // movw a, r
 717       debug_only(has_disp32 = true);
 718       break;
 719     case 0xC7: // movw a, #16
 720       debug_only(has_disp32 = true);
 721       tail_size = 2;  // the imm16
 722       break;
 723     case 0x0F: // several SSE/SSE2 variants
 724       ip--;    // reparse the 0x0F
 725       goto again_after_prefix;
 726     default:
 727       ShouldNotReachHere();
 728     }
 729     break;
 730 
 731   case REP8(0xB8): // movl/q r, #32/#64(oop?)
 732     if (which == end_pc_operand)  return ip + (is_64bit ? 8 : 4);
 733     // these asserts are somewhat nonsensical
 734 #ifndef _LP64
 735     assert(which == imm_operand || which == disp32_operand,
 736            "which %d is_64_bit %d ip " INTPTR_FORMAT, which, is_64bit, p2i(ip));
 737 #else
 738     assert((which == call32_operand || which == imm_operand) && is_64bit ||
 739            which == narrow_oop_operand && !is_64bit,
 740            "which %d is_64_bit %d ip " INTPTR_FORMAT, which, is_64bit, p2i(ip));
 741 #endif // _LP64
 742     return ip;
 743 
 744   case 0x69: // imul r, a, #32
 745   case 0xC7: // movl a, #32(oop?)
 746     tail_size = 4;
 747     debug_only(has_disp32 = true); // has both kinds of operands!
 748     break;
 749 
 750   case 0x0F: // movx..., etc.
 751     switch (0xFF & *ip++) {
 752     case 0x3A: // pcmpestri
 753       tail_size = 1;
 754     case 0x38: // ptest, pmovzxbw
 755       ip++; // skip opcode
 756       debug_only(has_disp32 = true); // has both kinds of operands!
 757       break;
 758 
 759     case 0x70: // pshufd r, r/a, #8
 760       debug_only(has_disp32 = true); // has both kinds of operands!


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