850   if (C->need_stack_bang(bangsize)) {
 851     framesize -= wordSize;
 852     st->print("# stack bang (%d bytes)", bangsize);
 853     st->print("\n\t");
 854     st->print("pushq   rbp\t# Save rbp");
 855     if (PreserveFramePointer) {
 856         st->print("\n\t");
 857         st->print("movq    rbp, rsp\t# Save the caller's SP into rbp");
 858     }
 859     if (framesize) {
 860       st->print("\n\t");
 861       st->print("subq    rsp, #%d\t# Create frame",framesize);
 862     }
 863   } else {
 864     st->print("subq    rsp, #%d\t# Create frame",framesize);
 865     st->print("\n\t");
 866     framesize -= wordSize;
 867     st->print("movq    [rsp + #%d], rbp\t# Save rbp",framesize);
 868     if (PreserveFramePointer) {
 869       st->print("\n\t");
 870       st->print("movq    rbp, [rsp + #%d]\t# Save the caller's SP into rbp", (framesize + wordSize));




 871     }
 872   }
 873 
 874   if (VerifyStackAtCalls) {
 875     st->print("\n\t");
 876     framesize -= wordSize;
 877     st->print("movq    [rsp + #%d], 0xbadb100d\t# Majik cookie for stack depth check",framesize);
 878 #ifdef ASSERT
 879     st->print("\n\t");
 880     st->print("# stack alignment check");
 881 #endif
 882   }
 883   st->cr();
 884 }
 885 #endif
 886 
 887 void MachPrologNode::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
 888   Compile* C = ra_->C;
 889   MacroAssembler _masm(&cbuf);
 890 

 850   if (C->need_stack_bang(bangsize)) {
 851     framesize -= wordSize;
 852     st->print("# stack bang (%d bytes)", bangsize);
 853     st->print("\n\t");
 854     st->print("pushq   rbp\t# Save rbp");
 855     if (PreserveFramePointer) {
 856         st->print("\n\t");
 857         st->print("movq    rbp, rsp\t# Save the caller's SP into rbp");
 858     }
 859     if (framesize) {
 860       st->print("\n\t");
 861       st->print("subq    rsp, #%d\t# Create frame",framesize);
 862     }
 863   } else {
 864     st->print("subq    rsp, #%d\t# Create frame",framesize);
 865     st->print("\n\t");
 866     framesize -= wordSize;
 867     st->print("movq    [rsp + #%d], rbp\t# Save rbp",framesize);
 868     if (PreserveFramePointer) {
 869       st->print("\n\t");
 870       st->print("movq    rbp, rsp\t# Save the caller's SP into rbp");
 871       if (framesize > 0) {
 872         st->print("\n\t");
 873         st->print("addq    rbp, #%d", framesize);
 874       }      
 875     }
 876   }
 877 
 878   if (VerifyStackAtCalls) {
 879     st->print("\n\t");
 880     framesize -= wordSize;
 881     st->print("movq    [rsp + #%d], 0xbadb100d\t# Majik cookie for stack depth check",framesize);
 882 #ifdef ASSERT
 883     st->print("\n\t");
 884     st->print("# stack alignment check");
 885 #endif
 886   }
 887   st->cr();
 888 }
 889 #endif
 890 
 891 void MachPrologNode::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
 892   Compile* C = ra_->C;
 893   MacroAssembler _masm(&cbuf);
 894