Quelle  interp_masm_s390.cpp   Sprache: C

java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
 6oits.
 * Copyright (c)   (,Interpreter:() generate_polljava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
   ALTER   THIS.
 *
 * This code is free software; you can redistribute it and/or modify,z_ijava_state_neg) )java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
 * the of  General PublicLicense version2,java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
 by SoftwareFoundation.
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 * This(dispatch
 *      (Z_tmp_1, (addresssfpt_tbl); // Z_tmp_1 = table;
 * FITNESS}
 *  }
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 *
 * You should have(, LogBytesPerWord)   
 *  (,0 ,Z_tmp_1      
 * Inc.
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 dispatch_basestateInterpreter(),generate_poll
 * or visit
 * questions
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/

// Major contributions by AHa, AS, JL, ML.

# precompiled
#  dispatch_base(,)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
#include "// to perform additional, template interpreter specific tasks before actually
#include "java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
# "
#include "interpreter/interpreter.hpp"
#include "interpreter/interpreterRuntime.hpp"
#include "oops/arrayOop.hpp"
#include "oops/markWord.hpp"
#include "oops/methodData.hpp"
#include "prims/jvmtiExport.hpp"
#include "prims/jvmtiThreadState.hpp"
#include "runtime/basicLock.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/javaThread.hpp"
#include "runtime/safepointMechanism.hpp"
#include "runtime/sharedRuntime.hpp"
#include "utilities/macros.hpp"
#include "utilities/powerOfTwo.hpp"

// Implementation of InterpreterMacroAssembler.
// This file specializes the assembler with interpreter-specific macros.

#ifdef PRODUCT
#define BLOCK_COMMENT(str
# BINDlabel)        (label);
#else
#define java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
#define /
#endif

void InterpreterMacroAssembler:/
  ( =NULL"Entryhave een y"java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
assertRscratch=,"' addressing;
  branch_optimized(Assembleraddress entry_point  {
}

void InterpreterMacroAssembler::empty_expression_stack(void) {
  get_monitors(Z_R1_scratch);
  add2reg(Z_esp, -Interpreter::stackElementSize, Z_R1_scratch);
}

// Dispatch code executed in the prolog of a bytecode which does not do it's
// own dispatch.
void InterpreterMacroAssembler::dispatch_prolog(java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
  // On z/Architecture we are short on registers, therefore we do not preload the
v InterpreterMacroAssembler:call_VM_baseRegisteroop_result  java.lang.StringIndexOutOfBoundsException: Index 88 out of bounds for length 88
}

// Dispatch code executed in the epilog of a bytecode which does not do it's
// own dispatch.
rMacroAssembler(   )java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
dispatch_next(state,)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
}

void means this is **popframe -we
  z_llgc(Z_bytecode, bcp_incr, Z_R0, Z_bcp);  // Load next bytecode.
  add2reg(Z_bcp, bcp_incr);                   
  dispatch_base(state,// If (processing and !pending) is an invisible/impossible state,
}

// Common code to dispatch and dispatch_only.
// Dispatch value in Lbyte_code and increment Lbcp.

void            exact_log2(popframe_pending_bit));
  (state)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23

#(addressInterpreter:);
  address reentry
  { Label OK;
    // Check if the frame pointer in Z_fp is correct.
    z_cg(Z_fp,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 z_bre(OK);
   reentry= (reentry, invalidframepointerZ_fp: " FILE_AND_LINE)java.lang.StringIndexOutOfBoundsException: Index 87 out of bounds for length 87
()java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
  }            in_bytes::earlyret_value_offset());
  { Label OK;
    // check if the locals pointer in Z_locals is correct
    z_cg(Z_locals, _z_ijava_state_neg(locals), Z_fp);
    z_bre(OK;
    reentry = stop_chain_staticz_lgRjvmtiState,Z_thread
    bindOK;
  }
#endif

  // TODO: Maybe implement +VerifyActivationFrameSize here.
/
  verify_oop(_tosstate;

  // Dispatch table to use.
  load_absolute_address(Z_tmp_1      (AddressRjvmtiState ),0,8 8 Z_R0_scratch;

  if (generate_poll) {
    address *sfpt_tbl = Interpreter::safept_table(state);
    ifbreak;
      Label dispatch;
      const Address poll_byte_addr(Z_threadcaseltos: (, , );break;
/java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
      z_tm:java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
      z_braz(case ftos le(Z_ftos val_offval_off;;
load_absolute_address,address)  
      bind(dispatch);
    }
  }

  // 0 <= Z_bytecode < 256 => Use a 32 bit shift, because it is shorter than sllg.
  // Z_bytecode must have been loaded zero-extended for this approach to be correct.
  z_sll(Z_bytecode, LogBytesPerWord, Z_R0);sAddress(,val_off   L,,,)java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
  z_lg

z_brZ_tmp_1)java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1

void    zbre() / if (thread->jvmti_thread_state() == NULL) exit;thread-jvmti_thread_state)= ) exit;
  dispatch_base(state, Interpreter::dispatch_table/ Initiateearlyret   if   already beingprocessed.
}

void InterpreterMacroAssembler::dispatch_only_normal(TosState state) {
  dispatch_base(state, Interpreter::normal_table(state));
}

void InterpreterMacroAssembler
  // Load current bytecode.
  (, AddressZ_bcp(intptr_t);
  dispatch_base(state, table);
}

// The following call_VM*_base() methods overload and mask the respective
// declarations/definitions in class MacroAssembler. They are meant as a "detour"
// to perform additional, template interpreter specific tasks before actually
// calling their MacroAssembler counterparts.

void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point) java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     ;/
  // interpreter specific
  // Note: No need to save/restore bcp (Z_R13) pointer since these are callee
  // saved registers and no blocking/ GC can happen in leaf calls.

  // super call
);
}

void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point
  void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) {
// Note: No need to save/restore bcp (Z_R13) pointer since these are callee
  // saved registers and no blocking/ GC can happen in leaf calls.;

  // super call
  MacroAssembler::call_VM_leaf_base(entry_pointif= izeof) java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
}

voidInterpreterMacroAssembler:call_VM_baseRegister oop_result  last_java_sp,
                                             java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   allow_relocation=; v variant.  code relocated
  // interpreter specific

  save_bcp();
  save_esp();
  // super call
  MacroAssembler::call_VM_base(oop_result, last_java_sp,
                               entry_point    if(index_size = sizeofu1) {
  restore_bcp();
}

void InterpreterMacroAssembler    ();
                        address entry_point bool allow_relocation
                                             bool }
  // interpreter specific

  save_bcp();
  save_esp(;
  // super call
  MacroAssembler::call_VM_baseoop_result last_java_sp,
                               entry_point, allow_relocation, check_exceptions);
  restore_bcp)
}

voidI::check_and_handle_popframe(Registers) {
   JvmtiExport:can_pop_frame)) {
    BLOCK_COMMENT("check_and_handle_popframe {");
    Label L;
    // Initiate popframe handling only if it is not already being
/ processed. the hasthepopframe_processing bitset 
    // means that this code is called *during* popframe handling - we
    // don't want to reenter.
    // TODO: Check if all four state combinations could be visible.
    // If (processing and !pending) is an invisible/impossible state,
    // there is optimization potential by testing both bits at once.
    // Then, All_Zeroes and All_Ones means skip, Mixed means doit.
    ((, JavaThreadpopframe_condition_offsetjava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
            exact_log2(JavaThread::popframe_pending_bit));
    z_bfalse()java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
    testbit(Address(Z_thread, JavaThread::popframe_condition_offset()),
            exact_log2(JavaThreadint bcp_offset,
    z_btrue(L);

    // Call Interpreter::remove_activation_preserving_args_entry() to get the
    // address of the same-named entrypoint in the generated interpreter code.
call_VM_leafCAST_FROM_FN_PTRaddress,::));
    // The above call should (as its only effect) return the contents of the field
    // _remove_activation_preserving_args_entry in Z_RET.
    // We just jump there to have the work done.
    z_br locatedat cache +   + (-1 (ast in)-(byte_no1).
// There is no way for control to fall thru here.

    bind(L);
");
  }
}


 InterpreterMacroAssemblerTosState)
    (::bytecode_1_mask =0ff,";
             =in_bytes:earlyret_tos_offset()
  int       BLOCK_COMMENT"})java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
              (::()
  int      state_off   = in_bytes(JavaThread::jvmti_thread_state_offset(  assert_different_registers;

  z_lgRjvmtiState state_off,Z_thread)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41

   () 
    case atos: z_lg(Z_tos, oop_off, RjvmtiState);
      store_const(Address(RjvmtiState, oop_off), 0L, 8, 8, Z_R0_scratch);
                                                    break;
    case ltos: z_lg ltos z_lg,val_offRjvmtiState);   ;
    case btos: // fall through
    case ztos: // fall through
    case ctos: // fall through
    case: // fall through
java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 58
    case ftos: z_le(Z_ftos, val_off, RjvmtiState);  break# java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
    case dtos: z_ld(Z_ftos, val_off, RjvmtiState);  break;
     :java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
    default  : ShouldNotReachHere(resolvedreference    ",0x09256)java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
  }

  // Clean up tos value in the jvmti thread state.
  store_const// load cpool->resolved_klass_at(index)
  // Set tos state field to illegal value.
  store_const(  / int value = *(Rcpool->int_at_addr(which));
}

void InterpreterMacroAssembler::check_and_handle_earlyret(/
  if (z_llgh(, Addresscpool,, sizeofConstantPool +2) // offset = resolved_klass_index (s390 is big-endian)
    BLOCK_COMMENT("z_sllg(, offset, LogBytesPerWord);// Convert 'index' to 'offset'
  z_lg(, Address,ConstantPool::esolved_klasses_offset_in_bytes);/java.lang.StringIndexOutOfBoundsException: Index 118 out of bounds for length 118
    // arg regs are save, because we are just behind the call in call_VM_base
     =;
    Register tmp                = Z_ARG3;
    load_and_test_long(jvmti_thread_state, Address(Z_thread, JavaThread::jvmti_thread_state_offset()));
    z_bre(L); // if (thread->jvmti_thread_state() == NULL) exit;

    // Initiate earlyret handling only if it is not already being processed.
    // If the flag has the earlyret_processing bit set, it means that this code
    // is called *during* earlyret handling - we don't want to reenter.

    BLOCK_COMMENT" {";
          "must fix this check, when changing the values of the earlyret enum");
    assert(JvmtiThreadState,in_bytes(ConstantPoolCachebase_offset() tmp cache)java.lang.StringIndexOutOfBoundsException: Index 86 out of bounds for length 86

    load_and_test_intRegister cache,
    z_brz(L); // if (thread->jvmti_thread_state()->_earlyret_state != JvmtiThreadState::earlyret_pending) exit;

    // Call Interpreter::remove_activation_early_entry() to get the address of the
    // same-named entrypoint in the generated interpreter code.
    assert(sizeof(TosState) == 4, "unexpected size");
    z_l(Z_ARG1constint method_offset=in_bytesjava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
call_VM_leafCAST_FROM_FN_PTR(address, ::remove_activation_early_entry,ZARG1
    // The above call should (as its only effect) return the contents of the field
    // _remove_activation_preserving_args_entry in Z_RET.
    // We just jump there to have the work done.
    z_br(Z_RET);
    // There is no way for control to fall thru here.

    bind(L// a subtype of super_klass. Blows registers Rsuper_klass, Rsub_klass, tmp1, tmp2.
    ("}check_and_handle_earlyret";
  }
}

void InterpreterMacroAssembler::super_call_VM_leaf(address Register Rtmp1,
  lgr_if_needed(Z_ARG1, arg_1);
  assert(arg_2 !                                                 Rtmp2,
  lgr_if_needed(Z_ARG2, arg_2);
  MacroAssembler::call_VM_leaf_base(entry_point, true);
}

void InterpreterMacroAssembler:get_cache_index_at_bcpRegisterindex,  size_tindex_size {
  Address param(Z_bcp, bcp_offset);

java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
  assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
  if (tmp1Rtmp2);
    load_sized_value(index, param
  } else if (index_size// Useful if consumed previously by access via stackTop().

l(,, ,)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45

    // Purpose: - Provide address of stack operand to exploit reg-mem operations.
    // we have to change the following assembler code to calculate the){
    // plain index.
    assert(::decode_invokedynamic_index(~13)= 12,changeline;
    not_((,Interpreter:(0,Z_esp;
  } else if (index_size == sizeof(u1)) {
    z_llgc(index, param);
  } {
a(,Z_R1_scratch)
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  BLOCK_COMMENT("}");
}


void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register cpe_offset,
                                                           assert_different_registers,Z_R1_scratch;
void::(Register)java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
  (,cpe_offset
  get_cache_index_at_bcp(, , );
  z_lg
  /Convert field    in.
  z_sllg(cpe_offset,(,Z_esp,Interpreter::(0),);
  BLOCK_COMMENT("}");
}

// Kills Z_R0_scratch.
void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache,
                                                                        :stackElementSize
                                                                        
                                                                        Z_esp 2:stackElementSize)
 :(Register
                                                                        
  BLOCK_COMMENT("get_cache_and_index_and_bytecode_at_bcp {") (r ddress);
  get_cache_and_index_at_bcp(cache, cpe_offset, bcp_offset, index_size);

  // We want to load (from CP cache) the bytecode that corresponds to the passed-in byte_no.
  debug_only(verify_esp(Z_esp, Z_R1_scratch));
  // Instead of loading, shifting and masking a DW, we just load that one byte of interest with z_llgc (unsigned).
  onstintbase_ix_off =(ConstantPoolCache:base_offset) + ConstantPoolCacheEntry:indices_offset)java.lang.StringIndexOutOfBoundsException: Index 112 out of bounds for length 112
  const int off_in_DW   = (8-1) - (1byte_no;
  (ConstantPoolCacheEntry: =ConstantPoolCacheEntry, " ";
  assert(ConstantPoolCacheEntry::bytecode_1_mask == 0xff, "");
  load_sized_value(bytecode, Address(cache, cpe_offset, base_ix_off+off_in_DW), 1, false /*signed*/);

  BLOCK_COMMENT("}");
}

// Load object from cpool->resolved_references(index).
void InterpreterMacroAssembler::load_resolved_reference_at_index(Register result,
  assert_different_registers(result, TosState state {
  get_constant_pool  verify_oop, );

  // Convert
  //  - from field index to resolved_references() index and
  //  - from word index to byte offset.
  // Since this is a java object, it is potentially compressed.
  Register tmp = index;   :(;            break
  z_sllg(indexcase:push_d)             ;
  // Load pointer for resolved_references[] objArray.
  z_lgresult :cache_offset_in_bytes() esult;
  z_lg(result, ConstantPoolCache::java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 1
  resolve_oop_handle(result);    atos ();breakjava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
#ifdef
  NearLabel index_ok;
  z_lgf(Z_R0, Address(result, arrayOopDesc::     vtos: 
  z_sllg(      : ();
    }
  stop  verify_oop(, state;
  bind(index_ok);
#endif
  z_agr(result,// Helpers for swap and dup.
  result Address(result, ::(T_OBJECT) ,noreg;
}

// load cpool->resolved_klass_at(index)
void InterpreterMacroAssembler::load_resolved_klass_at_offset(Register cpool(, (Z_esp ::xpr_offset_in_bytes
void::store_ptrintn,Registerval java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
  // int resolved_klass_index = extract_low_short_from_int(value);
  z_llgh,(cpool ,) );/java.lang.StringIndexOutOfBoundsException: Index 121 out of bounds for length 121
  z_sllg(offset, offset, LogBytesPerWord);                          // Convert 'index' to 'offset'(,_(), )
  z_lg(iklass, Address(cpool, ConstantPool::resolved_klasses_offset_in_bytes())); // iklass = cpool->_resolved_klasses
  z_lg(iklass, Address(iklass, offset, Array<Klass*>::base_offset_in_bytes()));
}

void  z_lgr(Z_method method) // Set Z_method (kills Z_fp!).
                                                               
                                                               // in this thread in which case we must call the i2i entry.
                                                               size_t index_size) {
       assingle-stepping,areimplemented partlyby avoiding
    get_cache_and_index_at_bcp(cache , bcp_offset );
add2reg_with_indexcache n_bytesConstantPoolCache:base_offset, tmp, cache);
COMMENT("});
}

void InterpreterMacroAssembler::load_resolved_method_at_index(int byte_noz_bcrbcondEqual,Z_R1_scratch) 
                                                              ,
                                                              ,Method:from_interpreted_offset()))java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
                                                              Register method)  /Aboutto  orwriteResp[0].
  const int  
    ConstantPoolCache::base_offset(
      ((byte_no == TemplateTable::f2_byte)
       ?     (, ,Z_SPjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
       :

  z_lg(method, Address// i.e. IJAVA_STATE.monitors > Resp.
}

// Generate a subtype check: branch to ok_is_subtype if sub_klass is
// a subtype of super_klass. Blows registers Rsuper_klass, Rsub_klass, tmp1, tmp2.
void InterpreterMacroAssembler::gen_subtype_check(Registerreentry=stop_chain_staticpops Z_esp  intomonitor area;
                                                  ,
                                                  
                                                       .( +:-Interpreter Resp
                                                  Label &ok_is_subtype) {
  /Profile not-null'klass.
profile_typecheck(Rtmp1 Rsub_klass,Rtmp2);

  // Do the check.
  check_klass_subtype(Rsub_klass, Rsuper_klass, Rtmp1, Rtmp2, ok_is_subtype);

   the failure of the check.
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}

// Pop topmost element from stack. It just disappears.
// Useful if consumed previously by access via stackTop().
void);
add2reg,*:stackElementSize
  debug_only(verify_esp(Z_esp, Z_R1_scratch(magic_ok
}

// Get Address object of stack top. No checks. No pop.
// Purpose: - Provide address of stack operand to exploit reg-mem operations.
//          - Avoid RISC-like mem2reg - reg-reg-op sequence.
Address:stackTop){
  return Address(Z_esp, Interpreter::expr_offset_in_bytes(0));
}

void::( ){
  z_l(r, Interpreter::expr_offset_in_bytes(0), Z_esp);
  add2reg(  (z_lgZ_bcpAddressZ_fp_(bcp));
  assert_different_registers(r, Z_R1_scratch);}
  debug_only(verify_esp(Z_esp, Z_R1_scratch));
}

voidInterpreterMacroAssembler::pop_ptrRegister ){
  z_lg(r, Interpreter::expr_offset_in_bytes(0), Z_esp);
add2reg,InterpreterstackElementSize);
  assert_different_registers(r, Z_R1_scratch);
  debug_only(verify_esp(Z_esp
}

 InterpreterMacroAssembler:pop_l( r java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
    asm_assert_ijava_state_magicZ_esp;
  add2reg(Z_esp, 2*Interpreter::stackElementSize);
  assert_different_registers(r, Z_R1_scratch);
  debug_only(Z_esp,Z_R1_scratch
}

void InterpreterMacroAssembler::pop_f(FloatRegister f) {
  (,(Z_esp :expr_offset_in_bytes0) false;
  add2reg(Z_esp, Interpreter::stackElementSize);
  debug_onlyjava.lang.StringIndexOutOfBoundsException: Range [12, 13) out of bounds for length 0
}

voidjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  mem2freg_opt(, (Z_esp ::expr_offset_in_bytes),);
  add2reg(  z_stgmdp z_ijava_state_neg),Z_fp);
  debug_only(verify_esp(Z_esp, Z_R1_scratch
}

void InterpreterMacroAssembler::push_iI::)
    sm_assert_ijava_state_magic)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
  debug_only( :get_method regjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
  z_st(r, Address(Z_esp))
  add2reg(Z_esp, -Interpreter:
}

 :(  java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
  z_stg(r, Address(Z_esp
  add2regZ_esp -nterpreterstackElementSize
}

void InterpreterMacroAssembler::push_l(Register r) {
  assert_different_registers(r, Z_R1_scratch
  debug_only(verify_esp(Z_esp, Z_R1_scratch));
  int offset = -Interpretercase:
  z_stg(, (Z_esp,offset
  (() Interpreter:)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
  zllgh, bcp_offsetZ_R0Z_bcp)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
}

void InterpreterMacroAssembler
  (verify_espZ_esp Z_R1_scratch)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
  freg2mem_opt(f, Address(Z_esp), false);
add2regZ_esp, -:stackElementSize)java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
}

void InterpreterMacroAssembler::push_d(FloatRegister d) {
  debug_only(verify_esp(Z_esp, Z_R1_scratch));
  int offset = -Interpreter::stackElementSize;
  freg2mem_opt(d, Address
  add2reg(Z_esp, 2 * )java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
}

void::(TosState) java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
  verify_oop(Z_tos, state);
  switch (() {
    case atos: push_ptr();           break;
    case btos: push_i();             break;
    case ztos:
    case ctos:
     :(;             breakjava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
     : ()             break
    case ltos  (, AddressRdst:constants_offset)java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
    case ftos: push_f();             break;
    case dtos: push_d();             break;
    case vtos: /* nothing to do */   break;
    defaultvoid InterpreterMacroAssembler:(Register , Register) {
  }
}

void InterpreterMacroAssembler::pop
  switch (// Unlock if synchronized method.
    case atos: pop_ptr(Z_tos// Unlock the receiver if this is a synchronized method.
    case btos: pop_i// If there are locked Java monitors
    case ztos://   Else
    asectos:
     : pop_i)         break;
    case itos: pop_i(Z_tos);         break;
    case ltos: pop_l(Z_tos);         break;
    case ftos: pop_f(Z_ftos);        break;
    case dtos: pop_d(Z_ftos);        breakbool install_monitor_exception) {
    case vtos: /* nothing to do */   break;
    default  : ShouldNotReachHere();
  }
  verify_oop(Z_tos    RegisterR_do_not_unlock_if_synchronized ;
}

// Helpers for swap and dup.
void InterpreterMacroAssemblerJavaThread::do_not_unlock_if_synchronized_offset
  verify_oop,;
}

 InterpreterMacroAssembler( n Register{
  z_stg(val, Address(Z_esp, Interpreter::expr_offset_in_bytes(n)));
}

void    
  // Satisfy interpreter calling convention (see generate_normal_entry()).
  z_lgr(Z_R10, Z_SP);   }
  // Record top_frame_sp, because the callee might modify it, if it's compiled.
  z_stg
  save_bcp();
  save_esp();
  monitorZ_fp, (:z_ijava_state_size () BasicObjectLock);
}

// Jump to from_interpreted entry of a call unless single stepping is possible
// in this thread in which case we must call the i2i entry.
 InterpreterMacroAssemblerjump_from_interpreted( ,Registertemp){
  assert_different_registers(method, Z_R10 /*used for initial_caller_sp*/, temp);
  prepare_to_jump_from_interpreted(method);

  if (JvmtiExport::can_post_interpreter_events()) {
    // JVMTI events, such as single-stepping, are implemented partly by avoiding running
    // compiled code in threads for which the event is enabled. Check here for
/java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
    z_lg(Z_R1_scratch, Address(    z_lg(Z_R1_scratch, Address(method
    MacroAssembler::load_and_test_int(Z_R0_scratch, Address(Z_thread, JavaThread::interp_only_mode_offset(   
    z_bcr
    // Run interpreted.)
    ( (method ::());
    z_br(Z_R1_scratch)    }
  } else {
    // Run compiled code.
    z_lg(
    z_br(Z_R1_scratch);
  }
}

#ifdefjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
void InterpreterMacroAssembler::verify_esp(Register Resp, Register Rtemp    /We use Z_ARG2  if goslowpath  will  java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
/
  // Make sure it is not in the monitors or the TOP_IJAVA_FRAME_ABI.
  address reentry = NULL;

  {
    // Check if the frame pointer in Z_fp is correct.
     // Points to word before bottom of monitor block.
    z_cg(Z_fp, 0, Z_SP);
    z_bre(OK);
      stop_chain_static(, invalid frame pointerZ_fp)
    bind(OK);    ()
  }
{
    // Resp must not point into or below the operand stack,
    // i.e. IJAVA_STATE.monitors > Resp.
    NearLabel OK;
    RegisterCAST_FROM_FN_PTR(, ::
    z_lg(throw_illegal_monitor_state_exception
    compareU64_and_branch(Rmonitors, Resp, bcondHigh, OKshould_not_reach_here(;
    reentry = stop_chain_static(reentry, "too many pops: Z_esp points into/java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
    if (){
  }
  {
    // Resp may point to the last word of TOP_IJAVA_FRAME_ABI, but not below(,
    // i.e. !(Z_SP + frame::z_top_ijava_frame_abi_size - Interpreter::stackElementSize > Resp).
    NearLabel OK;
    Register Rabi_bottom = Rtemp;
add2regRabi_bottom frame::z_top_ijava_frame_abi_size- ::stackElementSizeZ_SP;
    compareU64_and_branch(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    reentry (, toomany:Z_esp points TOP_IJAVA_FRAME_ABI)
    bind(OK(exception)
  }
java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 1

void InterpreterMacroAssemblerb();
  Label magic_ok;
ad_const_optimizedtmp frame
  z_cg(  (,Address(const_offset())
  z_bre(, (in_bytesConstMethod::());
  stop_static(
  bindLabel, , ,done
}
endif

void InterpreterMacroAssembler:(java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
  z_stg(Z_bcp
  asm_assert_ijava_state_magic
  NOT_PRODUCT(z_lg(Z_bcp,  (, )java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

void// Unlock the receiver if this is a synchronized method.
  asm_assert_ijava_state_magic(Z_bcp);
  z_lg(Z_bcp//
}

void InterpreterMacroAssembler://   Else if install_monitor_exception
//   Else
}

void InterpreterMacroAssembler:                                                  Registerreturn_pc
asm_assert_ijava_state_magic)
  z_lg(Z_espjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

void InterpreterMacroAssembler::get_monitors(Register reg) {if StackReservedPages>0 java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
  asm_assert_ijava_state_magic)
       ;
}

void InterpreterMacroAssembler( ){
  reg2mem_opt(reg, Address(Z_fp, _z_ijava_state_neg(monitors)));
}

void InterpreterMacroAssembler::get_mdp(Register mdp) {
  z_lg(mdp, _z_ijava_state_neg(mdx), Z_fp);
}

void InterpreterMacroAssembler::save_mdp(Register mdp) {
  z_stg(mdp, _z_ijava_state_neg(mdx), (, java.lang.StringIndexOutOfBoundsException: Index 124 out of bounds for length 124
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

// Values that are only read (besides initialization).
void InterpreterMacroAssembler}
    (,state;
v(;
}

 :( ){
  asm_assert_ijava_state_magic(reg);
  z_lg(reg, Address(Z_fp, _z_ijava_state_neg(method)));
}

void InterpreterMacroAssembler//
                                                          signedOrNot is_signed) {
  // Rdst is an 8-byte return value!!! InterpreterMacroAssemblerlock_object( monitor,  ){

  // Unaligned loads incur only a small penalty on z/Architecture. The penalty
  
  // boundary. In case of a cache miss, the stall could, of course, be
  // much longer.

  switch (is_signed) }
    case Signed:
      z_lgh
     break;
   case:
     z_llgh(Rdst, bcp_offset
     break;
   default:
       //   // We stored the monitor address into the object's mark word.

}


/java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
               setCCOrNot) java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
 Rdst  8bytereturnvalue

  // Unaligned loads incur only a small penalty on z/Architecture. The penalty
  // is a few (2..3) ticks, even when the load crosses a cache line
  // boundary. In case of a cache miss, the stall could, of course, be
  // much longer.

  // Both variants implement a sign-extending int2long load.
  if (set_cc == set_CC) {
g(RdstAddress(Z_bcp,intptr_t)bcp_offset)java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
  }load_k, object;
    mem2reg_signed_opt(    Rdst, Address(Z_bcp, (intptr_t)bcp_offset));
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

void InterpreterMacroAssembler::get_constant_pool(Register Rdst) {
  Rdst;
 (Rdst,AddressRdst,Method:());
  mem2reg_opt(Rdst, Address(Rdst, ConstMethod::constants_offset()));
}

void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) {
  get_constant_pool(Rcpool);
  mem2reg_opt(Rtags,  // 
}

// Unlock if synchronized method.
//
// Unlock the receiver if this is a synchronized method.
// Unlock any Java monitors from synchronized blocks.
//
// If there are locked Java monitors
//   If throw_monitor_exception
//     throws IllegalMonitorStateException

//     installs IllegalMonitorStateException
//   Else
//     no error processing
void InterpreterMacroAssembler/
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                                                              bool install_monitor_exception 
  NearLabel unlocked, unlock, no_unlock;

  {
    Register R_method = Z_ARG2;
    Register   // The prior sequence "LGR, NGR, LTGR" can be done better

/java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
    const Address do_not_unlock_if_synchronized(Z_thread,
                                                JavaThread::do_not_unlock_if_synchronized_offset
    load_sized_value(R_do_not_unlock_if_synchronized, do_not_unlock_if_synchronized, 1, false(low_case;
    z_mvi(do_not_unlock_if_synchronized, false); // Reset the flag.

    // Check if synchronized method.
    get_method(R_method);
    verify_oop(Z_tos, state);
    pushstate);
    testbit(method2_(R_method, access_flags), JVM_ACC_SYNCHRONIZED_BITz_brudone;
    z_bfalse(unlocked);

    // Don't unlock anything if the _do_not_unlock_if_synchronized flag
    // is set.
    compareU64_and_branch(R_do_not_unlock_if_synchronized, c(, address::) )java.lang.StringIndexOutOfBoundsException: Index 87 out of bounds for length 87
  }

  // unlock monitor

  // BasicObjectLock will be first in list, since this is a
  // synchronized method. However, need to check that the object has// Throw IllegalMonitorException if object is not locked by current thread.
  // not been unlocked by an explicit monitorexit bytecode.
  const Address monitor(Z_fp, -(frame   UseHeavyMonitors) {
  // We use Z_ARG2 so that if we go slow path it will be the correct
  // register for unlock_object to pass to VM directly.
  load_addressZ_ARG2 monitor) / Address of first monitor.
  z_lg(Z_ARG3
  compareU64_and_branch(Z_ARG3,  //   // Recursive unlock. Mark      object  NULL.

 () {
    // Entry already unlocked need to throw an exception.
MacroAssemblercall_VM(,CAST_FROM_FN_PTRaddress,InterpreterRuntime:throw_illegal_monitor_state_exception)java.lang.StringIndexOutOfBoundsException: Index 121 out of bounds for length 121
    should_not_reach_here();
   {
// Monitor already unlocked during a stack unroll.
      Address obj_entry(monitor, BasicObjectLock::obj_offset_in_bytes());
    // Continue with stack unrolling.
    
      MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(    /In  interpreter we assure thejava.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
   z_bru(unlocked);
  (,DataLayout

b(nlock

unlock_object(Z_ARG2

(unlocked

/java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39

  // Check that all monitors are unlocked.Register
  {
    NearLabel loop, exception, entry, restart;
    const int entry_size = frame::interpreter_frame_monitor_size
    / We use Z_ARG2 so that if we go slow path it will be the correct
    // register for unlock_object to pass to VM directly.
    Register R_current_monitor = Z_ARG2;
    Register R_monitor_block_bot = Z_ARG1;
    const Address monitor_block_top(Z_fp, _z_ijava_state_neg(monitors));
    const Address monitor_block_bot(Z_fp, -frame::z_ijava_state_size);

    bind(restart);
    // Starting with top-most entry.
z_lg,monitor_block_top
    // Points to word before bottom of monitor block.(,constant tmp
    load_address(R_monitor_block_bot, monitor_block_bot);
    

    // Entry already locked, need to throw exception.
    bind(exception);

    if (throw_monitor_exception) {
      // Throw exception.
      MacroAssembler::call_VM(noreg,
                              CAST_FROM_FN_PTR(address, InterpreterRuntime::
                                               throw_illegal_monitor_state_exception));
should_not_reach_here
    } else {
      // Stack unrolling. Unlock object and install illegal_monitor_exception.
      // Unlock does not block, so don't have to worry about the frame.( mdp_in
      // We don't have to preserve c_rarg1 since we are going to throw an exception.
      unlock_object(R_current_monitor);
      if (install_monitor_exception) {
        call_VM(noreg, CAST_FROM_FN_PTR(address,
                                        InterpreterRuntime::
                                        new_illegal_monitor_state_exception));
      }
      z_bru(restart);
    }

    bind(loop);
    // Check if current entry is used.
    load_and_test_long(Z_R0_scratch, Address(R_current_monitor, BasicObjectLock::obj_offset_in_bytes()));
    z_brne(exception);

    add2reg(R_current_monitor, entry_size); // Otherwise advance to next entry.
    bindentry);
    compareU64_and_branch(R_current_monitor, R_monitor_block_bot, bcondNotEqual, loop);
  }

  bind(no_unlock);
  popz_brne)
  verify_oop(Z_tos, state);
}

void InterpreterMacroAssembler  } lse{
  get_method(ret_type);
  z_lg(ret_type, Address(ret_type, in_bytes(Method::const_offset())));
  z_lb(ret_type, Address(ret_type, in_bytes(ConstMethod::result_type_offset())));

  Label notBool    / Put the test value into a register, so caller can use it:

  // common case first
  compareU32_and_branch(ret_type, T_INT, bcondEqual, done);

  compareU32_and_branchret_type, , ,notBool)
  z_nilf(result, 0x1)
  z_bru(done);

  bind(notBool);
  compareU32_and_branch(ret_type, T_BYTE, bcondNotEqual, notByte);
  z_lbr(result result;
  z_bru(done);

  bind(notByte);
  compareU32_and_branch
  z_nilf(result, acroAssembler::update_mdp_by_offset(Register mdp_in,
  z_bru(done);

  bind(notChar);
  // compareU32_and_branch(ret_type, T_SHORT, bcondNotEqual, notShort);
  z_lhr(result, result);

  // Nothing to do for T_INT
  ()
}

// remove activation
//
// Unlock the receiver if this is a synchronized method.
// Unlock any Java monitors from synchronized blocks.
// Remove the activation from the stack.
//
// If there are locked Java monitors
//   If throw_monitor_exception
//     throws IllegalMonitorStateException
//   Else if install_monitor_exception
//     installs IllegalMonitorStateException
//   Else
//     no error processing
void InterpreterMacroAssembler::remove_activation(TosState state(, mustbe profilinginterpreter);
                                                  Register return_pc,
                                                  bool throw_monitor_exception,
                                                  bool install_monitor_exception,
                                                  bool notify_jvmti) {
  BLOCK_COMMENT("remove_activation InterpreterMacroAssembler::update_mdp_for_ret( java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
  unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception);

  // Save result (push state before jvmti call and pop it afterwards) and notify jvmti.
  notify_method_exit(false, state, notify_jvmti ? NotifyJVMTI : SkipNotifyJVMTI);

  if (StackReservedPages > 0) {
    BLOCK_COMMENT("reserved_stack_check:")
    // Test if reserved zone needs to be enabled.
    Label no_reserved_zone_enabling;// We are taking a branch. Increment the taken count.

    // Compare frame pointers. There is no good stack pointer, as with stack
    // frame compression we can get different SPs when we do calls. A subsequent
    // call could have a smaller SP, so that this compare succeeds for an
    // inner call of the method annotated with ReservedStack.
    z_lg(Z_R0, Address(Z_SP, (intptr_t)_z_abi(callers_sp)));
    z_clg(Z_R0, Address(Z_thread, JavaThread::reserved_stack_activation_offset())); // Compare with frame pointer in memory.
    z_brl(no_reserved_zone_enabling);

    // Enable reserved zone again, throw stack overflow exception.
    // 64-bitjava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
        call_VM, DataLayout:)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57

    should_not_reach_here();

    bindno_reserved_zone_enabling
  }

  verify_oop,state)
  verify_thread();

  pop_interpreter_frame(return_pc, Z_ARG2, Z_ARG3);
  BLOCK_COMMENT("} remove_activation");
}

// lock object
//
// Registers alive
//   monitor - Address of the BasicObjectLock to be used for locking,
//             which must be initialized with the object to lock.
//   object  - Address of the object to be locked.
void InterpreterMacroAssembler::lock_object(Register monitor, Register object) {

  if (UseHeavyMonitors) {
    Label;
    return;
  }

  // template code:
  //
  // markWord displaced_header = obj->mark().set_unlocked();
  // monitor->lock()->set_displaced_header(displaced_header);
  // if (Atomic::cmpxchg(/*addr*/obj->mark_addr(), /*cmp*/displaced_header, /*ex=*/monitor) == displaced_header) {
  //   // We stored the monitor address into the object's mark word.
  // } else if (THREAD->is_lock_owned((address)displaced_header))
  //   // Simple recursive case.
  //   monitor->lock()->set_displaced_header(NULL);
  // } else {
/
  //   InterpreterRuntime::monitorenter(THREAD, monitor);
  // }

  const Register displaced_header = Z_ARG5;
  const Register object_mark_addr = Z_ARG4;
  const Register current_header       

  update_mdp_by(,in_bytes(::branch_data_size()))
  NearLabel slow_case;

  // markWord displaced_header = obj->mark().set_unlocked();(profile_continue;

  // Load markWord from object into displaced_header.
  z_lg(displaced_header, oopDesc::mark_offset_in_bytes(), object);

  if (DiagnoseSyncOnValueBasedClasses != 0) {
    load_klass}
    testbit(Address(Z_R1_scratch, Klassjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    z_btrue(slow_case);
  }

// Set displaced_header   (  object| ).
  z_oill(displaced_header, markWord::unlocked_value);

  // monitor->lock()->set_displaced_header(displaced_header);

  // Initialize the box (Must happen before we update the object mark!).
  z_stg(displaced_header, BasicObjectLock::lock_offset_in_bytes/java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
                          BasicLock::displaced_header_offset_in_bytes(), monitor);



  // Store stack address of the BasicObjectLock (this is monitor) into object.
  add2reg(object_mark_addr, oopDesc::mark_offset_in_bytes(), object);

  z_csg(displaced_header, monitor, 0, object_mark_addr);
  assert(current_header==displaced_header, "must be same register"); // Identified two registers from z/Architecture.

  z_bre(done);

  // } else if (THREAD->is_lock_owned((address)displaced_header))
  //   // Simple recursive case.
  //   monitor->lock()->set_displaced_header(NULL);

  // We did not see an unlocked object so try the fast recursive case.

  // Check if owner is self by comparing the value in the markWord of object
  // (current_header) with the stack pointer.
  z_sgr(current_header, Z_SP .

  assert(os::vm_page_size() > 0xfff, "page size too small - change the constant")

  // The prior sequence "LGR, NGR, LTGR" can be done better
  // (Z_R1 is temp and not used after here).
  load_const_optimized(Z_R0, (~(os::vm_page_size()-1) | markWord::lock_mask_in_place));
  z_ngr(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  // If condition is true we are done and hence we can store 0 in the displaced
  // header indicating it is a recursive lock and be done.
  z_brne(slow_case);
  z_release();  // Membar unnecessary on zarch AND because the above csg does a sync before and after.
  z_stg(Z_R0/*==0!*/, BasicObjectLock::lock_offset_in_bytes() +
N ;
  z_bru(done);

  // } else {
  //   // Slow path.
  , monitor);

  // None of the above fast optimizations worked so we have to get into the
  // slow case of monitor enter.
  ();
  call_VM(noreg, CAST_FROM_FN_PTR(addressNearLabel ;

  /}

  bind
}

// Unlocks an object. Used in monitorexit bytecode and remove_activation.
//
// Registers alive
//   monitor - address of the BasicObjectLock to be used for locking,
//             which must be initialized with the object to lock.
//
// Throw IllegalMonitorException if object is not locked by current thread.
void InterpreterMacroAssembler::unlock_object(Register monitor, Register object) {

  if (UseHeavyMonitors) {
    call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), monitor);
    return;
  }

// else {
  // template code:
  //
  // if ((displaced_header = monitor->displaced_header()) == NULL) {
  //   // Recursive unlock. Mark the monitor unlocked by setting the object field to NULL.
  //   monitor->set_obj(NULL);
  // } else if (Atomic::cmpxchg(obj->mark_addr(), monitor, displaced_header) == monitor) {// The machine visits each row (of receiver/count) until the receiver type
  //   // We swapped the unlocked mark in displaced_header into the object's mark word.
  //   monitor->set_obj(NULL);
  // } else {
  //   // Slow path.
  //   InterpreterRuntime::monitorexit(monitor);
  // }

   It's the interpreter, so we are trading off code space for speed.
  const// See below for example code.
  Addressobj_entry(,:obj_offset_in_bytes);
  Label done;

  if (object == noreg) {
    // In the template interpreter, we must assure that the object
    // entry in the monitor is cleared on all paths. Thus we move
    // loading up to here, and clear the entry afterwards.
    object = Z_ARG3; // Use Z_ARG3 if caller didn't pass object.
    z_lg(object, obj_entry);                                        & done boolis_virtual_call) {
  }

  assert_different_registers(monitor, object, displaced_header, current_header);

  // if ((displaced_header = monitor->displaced_header()) == NULL) {
      if (is_virtual_call) { (is_virtual_call) {
  //   monitor->set_obj(NULL);

  clear_mem(obj_entry, sizeof(oop));

  // Test first if we are in the fast recursive case.    
  MacroAssembler::load_and_test_long(displaced_header,
                                     Address(monitor, BasicObjectLock::java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
                                                      BasicLock::displaced_header_offset_in_bytes()));
  z_bre(done); // displaced_header == 0 -> goto done

  // } else if (Atomic::cmpxchg(obj->mark_addr(), monitor, displaced_header) == monitor) {
  //   // We swapped the unlocked mark in displaced_header into the object's mark word.
  //   monitor->set_obj(NULL);//   2. found null => keep looking for case 1, maybe allocate this cell

  // If we still have a lightweight lock, unlock the object and be done.

   int=; row= last_rowrow){
  assert(oopDesc::mark_offset_in_bytes() == 0, "unlock_object: review code below");

  // We have the displaced header in displaced_header. If the lock is still
  // lightweight, it will contain the monitor address and we'll store the
  java.lang.StringIndexOutOfBoundsException: Range [2, 0) out of bounds for length 0
  z_lgr(current_header, monitor);
  z_csg(current_header, displaced_header, 0, object);
  z_bre(done);

  // } else {
  //   // Slow path.
  //   InterpreterRuntime::monitorexit(monitor);

  // The lock has been converted into a heavy lock and hence
  // we need to get into the slow case.
  z_stg(object, obj_entry);   // Restore object entry, has been cleared above.
  call_VM_leaf(CAST_FROM_FN_PTR)

  // }

  bind(done);
}

void InterpreterMacroAssembler::test_method_data_pointer(Register mdp
  assert(ProfileInterpreter, "must be profiling interpreter");
  load_and_test_long(mdp, Address(Z_fp, _/
  z_brz(zero_continue);
}

// Set the method data pointer for the current bcp.
void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
  assert(ProfileInterpreter, "must ()java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
  Label    set_mdp;
  Register mdp    = Z_ARG4;
  Register method = Z_ARG5;

  get_method(method);
  // Test MDO to avoid the call if it is NULL.
  load_and_test_long(mdp, method2_(method, method_data));
  z_brz(set_mdp);

  call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), method, Z_bcp);
  // Z_RET: mdi
  // Mdo is guaranteed to be non-zero here, we checked for it before the call.
  assert(method->is_nonvolatile(), "choose nonvolatile reg or reload from frame");
  z_lg(mdp, method2_(method, method_data)); // Must reload, mdp is volatile reg.
  add2reg_with_index(mdp, in_bytes(MethodData::data_offset()), Z_RET, mdp);

  bindset_mdp;
  save_mdp(mdp);
}

void InterpreterMacroAssembler::verify_method_data_pointer() {
  assert(ProfileInterpreter, "must be profiling interpreter");
#ifdef ASSERT
  NearLabel verify_continue;
  if(s_virtual_call 
  Register mdp    = Z_ARG4;
  Register method = Z_ARG5;

  test_method_data_pointer(mdp, verify_continue)z(done;
  get_method(method);

  / If the mdp is valid, it will point to a DataLayout header which is
  // consistent with the bcp. The converse is highly probable also.
  load_sized_value(bcp_expected, Address(mdp, DataLayout::bci_offset()), 2, false /*signed*/);)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
  z_ag(bcp_expected, Address(method, Method::const_offset()));
  load_address(bcp_expected, Address(
  compareU64_and_branch(bcp_expected, Z_bcp, bcondEqual, verify_continue);
  call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), method, Z_bcp, mdp);
  bind(verify_continue);
#endif // ASSERT
}

void InterpreterMacroAssembler::set_mdp_data_at(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  assert(ProfileInterpreter, "must be profiling interpreter");
  z_stg(value, constant, mdp_in);
}

void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
                                                      
                                                      Register tmp,
                                                      bool decrement) {
  assert_different_registers(mdp_in, tmp);
  // counter address
  Address data(mdp_in, constant);
  const int delta = decrement ? -DataLayout::counter_increment : DataLayout::counter_increment;
  add2mem_64(Address(mdp_in, constant), delta, tmp);
}

void InterpreterMacroAssembler::set_mdp_flag_at( ,
) {
  assert(ProfileInterpreter, "must be profiling interpreter");
  // Set the flag.
  z_oi(Address(mdp_in, DataLayout::flags_offset()),
}

void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
                                                 int offset,
                                                 Register value,
                                                 Register test_value_out//   if (row[0].rec != NULL) {
                                                 Label& not_equal_continue) {
  assert(ProfileInterpreter, "// if (row[1].rec == rec) { row[1].incr(); goto done; }
  if (test_value_out == noreg) {
    z_cg(value, Address(mdp_in, offset));
    z_brne(not_equal_continue);
  } else {
    // Put the test value into a register, so caller can use it:
    z_lg(test_value_out, Address(mdp_in, offset));
    compareU64_and_branch(test_value_out, value, bcondNotEqual, not_equal_continue);
  }
}

void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp//     } else {
  update_mdp_by_offset(mdp_in, noreg, offset_of_disp);
}

void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in,
                                                     //       row[1].init(rec); goto done;
                                                     int offset_of_disp) {
  assert(ProfileInterpreter, "must be profiling interpreter");
  Address disp_address(mdp_in, dataidx, offset_of_disp);
  Assembler::z_ag(mdp_in, disp_address);
  save_mdp(mdp_in);
}

void InterpreterMacroAssemblerjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  assert(ProfileInterpreter, "must be profiling interpreter");
  add2reg(mdp_inRegister mdp, Register reg2
  save_mdp(mdp_in);
}

void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci)( " be ");
  assert(ProfileInterpreter,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  assert(return_bci->is_nonvolatile(), "choose nonvolatile reg or save/restore")
_VMnoreg
          CAST_FROM_FN_PTR(address, InterpreterRuntimejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
          return_bci);
}

void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) {
  if (ProfileInterpreter) {
     profile_continue;

    // If no method data exists, go to profile_continue.
    // Otherwise, assign to mdp.
    test_method_data_pointer(mdp, profile_continue);

    // We are taking a branch. Increment the taken count.
    // We inline increment_mdp_data_at to return bumped_count in a register
    //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
    Address data(mdp, JumpData::taken_offset());
    z_lg(bumped_count, data);
    // 64-bit overflow is very unlikely. Saturation to 32-bit values is
    // performed when reading the counts.
    add2reg(bumped_count, DataLayout::counter_increment);
    z_stg(bumped_count,    

    // The method data pointer needs to be updated to reflect the new target.
    update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
    bind(profile_continue);
  }
}

// Kills Z_R1_scratch.
void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) {
  if (ProfileInterpreter) {
    Label profile_continue;

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(mdp, profile_continue);

branch Increment the   .
    increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()), Z_R1_scratch);

    // The method data pointer needs to be updated to correspond to
    // the next bytecode.
    update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size()));
    bind(profile_continue);
  }
}

// Kills: Z_R1_scratch.
void InterpreterMacroAssembler::profile_call(Register mdp) {
  if (ProfileInterpreter) {
    Label profile_continue;

    // If no method data exists, go to profile_continue.(mdp in_bytesRetData:bci_displacement_offset
    test_method_data_pointer(mdp, profile_continue);

    // We are making a call. Increment the count.
    increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));

    // The method data pointer needs to be updated to reflect the new target.
    update_mdp_by_constantmdp,in_bytesCounterDatacounter_data_size);
    bind(profile_continue);
  }
}

void InterpreterMacroAssembler::profile_final_call(Register mdp) {
  if (ProfileInterpreter) {
    Label profile_continue;

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(

    // We are making a call. Increment the count.
    increment_mdp_data_at(mdp,    ()java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27

    // The method data pointer needs to be updated to reflect the new target.
    update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size()));
    bind(profile_continue);
  }
}

void InterpreterMacroAssembler::profile_virtual_call(Register receiver,
                                                     Register mdp,
                                                      reg2java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
                                                     bool receiver_can_be_null) {
  if (ProfileInterpreter) {    test_method_data_pointer(, );
    NearLabel profile_continue;

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(mdp, profile_continue)    // The method data pointer needs to be updated.

    NearLabel skip_receiver_profile;
java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 31
      NearLabel not_null;
      compareU64_and_branch(receiver, (intptr_t)0L, bcondNotEqual, not_null);
      // We are making a call. Increment the count for null receiver.
      increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()))update_mdp_by_constant(mdp );
      z_bru(skip_receiver_profile);
      bind(not_nullbind();
    }

    // Record the receiver type.
    record_klass_in_profile(receiver, mdp
    bind(skip_receiver_profile);

    // The method data pointer needs to be updated to reflect the new target.
    update_mdp_by_constantmdp,in_bytesVirtualCallData:))java.lang.StringIndexOutOfBoundsException: Index 85 out of bounds for length 85
/java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
  }
}

// This routine creates a state machine for updating the multi-row
// type profile at a virtual call site (or other type-sensitive bytecode).
// The machine visits each row (of receiver/count) until the receiver type
// is found, or until it runs out of rows. At the same time, it remembers
// the location of the first empty row. (An empty row records null for its
// receiver, and can be allocated for a newly-observed receiver type.)
// Because there are two degrees of freedom in the state, a simple linear
// search will not work; it must be a decision tree. Hence this helper
// function is recursive, to generate the required tree structured code.
// It's the interpreter, so we are trading off code space for speed.
// See below for example code.
void InterpreterMacroAssembler::record_klass_in_profile_helper(
                                        Register receiver, Register mdp,
                                        Register reg2, int start_row,
                                        
  ( =)
    if (is_virtual_call) {
      increment_mdp_data_at(mdp, in_bytes(CounterDataifProfileInterpreter{
    }
    return;
  }

  int last_row = VirtualCallData::row_limit() - 1;
  assert(start_row <= last_row, "must be work left to do");
  // Test this row for both the receiver and for null.
  // Take any of three different outcomes:
  //   1. found receiver => increment count and goto done
  //   2. found null => keep looking for case 1, maybe allocate this cell
/
  // Case 3 is handled by a recursive call.
   row =;row <;row+ {
    NearLabel next_test;
    bool test_for_null_also = (row == start_row);

      // Record the object type.
    int recvr_offset (::receiver_offset())
    test_mdp_data_at(mdp, recvr_offset, receiver,
                     (test_for_null_also ? reg2 : noreg),    }
                     update_mdp_by_constant(mdp,);
    // (Reg2 now contains the receiver from the CallData.)

    // The receiver is receiver[n]. Increment count[n].
    int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row));
    increment_mdp_data_at(mdp, count_offset);
    z_bru(done);
    bind(next_test);

    if (test_for_null_also) {
      Label found_null;
      // Failed the equality check on receiver[n]... Test for null.
      z_ltgr(reg2, reg2);
      if (start_row == last_row) {
        // The only thing left to do is handle the null case.
        if (is_virtual_call) {
          z_brz(found_null)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
          // Receiver did not match any saved receiver and there is no empty row for it.
          // Increment total counter to indicate polymorphic case.
          increment_mdp_data_at(mdp, in_bytes(CounterData:
          z_bru(done);
          bind(found_null);
        } else {
          z_brnz(done);
        }
        break;
      }
      // Since null is rare, make it be the branch-taken case.
      z_brz);

      // Put all the "Case 3" tests here.
      record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call);

      // Found a null. Keep searching for a matching receiver,
      // but remember that this is an empty (unused) slot.
      bind(found_null);
    }
  }

  // In the fall-through case, we found no matching receiver, but we
  // observed the receiver[start_row] is NULL.

  // Fill in the receiver field and increment the count.
  int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row));
  set_mdp_data_at(mdp, recvr_offset, receiver);
  int count_offset = in_bytes(VirtualCallData
  load_const_optimized(reg2    // If no method data exists, go to profile_continue.
  set_mdp_data_at(mdp, count_offset, reg2);
  if (start_row > 0) {
    z_brudone
  }
}

// Example state machine code for three profile rows:
//   // main copy of decision tree, rooted at row[1]
//   if (row[0].rec == rec) { row[0].incr(); goto done; }
//   if (row[0].rec != NULL) {
//     // inner copy of decision tree, rooted at row[1]
//     if (row[1].rec == rec) { row[1].incr(); goto done; }
//     if (row[1].rec != NULL) {
//       // degenerate decision tree, rooted at row[2]
//       if (row[2].rec == rec) { row[2].incr(); goto done; }
//       if (row[2].rec != NULL) { count.incr(); goto done; } // overflow
//       row[2].init(rec); goto done;
//     } else {
//       // remember row[1] is empty
//       if (row[2].rec == rec) { row[2].incr(); goto done; }
//       row[1].init(rec); goto done;
//     }
//   } else {
//     // remember row[0] is empty
//     if (row[1].rec == rec) { row[1].incr(); goto done; }
//     if (row[2].rec == rec) { row[2].incr(); goto done; }
//     row[0].init(rec); goto done;
//   }
//   done:

void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
                                                        Register mdp, Register reg2,
                                                        bool is_virtual_call) {
  assert(ProfileInterpreter, "must be profiling");
  Label done;

  record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call);

  bind (done);
}

void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  if (ProfileInterpreter) {
    NearLabel profile_continue;
    uint row;

    // If no method data exists, go to profile_continue.
java.lang.StringIndexOutOfBoundsException: Range [101, 4) out of bounds for length 52

    // Update the total ret count.
    increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));

    for row=0   RetData:row_limit) ++ java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
      NearLabel next_test;

      // See if return_bci is equal to bci[n]:
      test_mdp_data_at(mdp,
                       in_bytes(RetData::bci_offset(row)),
                       return_bci, noreg,
                       next_test);

      // Return_bci is equal to bci[n]. Increment the count.
      increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));

      // The method data pointer needs to be updated to reflect the new target.
      update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row)));
      z_bru(profile_continue);
      bind(next_test);
    }

    update_mdp_for_ret(return_bci);

    bind(profile_continue);
  }
}

void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
  if (ProfileInterpreter) {
    Label profile_continue;

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(mdp, profile_continue);

    set_mdp_flag_at(mdp, BitData::null_seen_byte_constant());

    // The method data pointer needs to be updated.
    int mdp_delta = in_bytes(BitData::bit_data_size());
    if (TypeProfileCasts) {
      mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
    }
    update_mdp_by_constant(mdp, mdp_delta);

    bind(profile_continue);
  }
}

void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp, Register tmp) {
  if (ProfileInterpreter && TypeProfileCasts) {
    Label profile_continue;

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(mdp, profile_continue);

    int count_offset = in_bytes(CounterData::count_offset());
    // Back up the address, since we have already bumped the mdp.
    count_offset -= in_bytes(VirtualCallData::virtual_call_data_size());

    // *Decrement* the counter. We expect to see zero or small negatives.
    increment_mdp_data_at(mdp, count_offset, tmp, true);

    bind (profile_continue);
  }
}

void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) {
  if (ProfileInterpreter) {
    Label profile_continue;

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(mdp, profile_continue);

    // The method data pointer needs to be updated.
    int mdp_delta = in_bytes(BitData::bit_data_size());
    if (TypeProfileCasts) {
      mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());

      // Record the object type.
      record_klass_in_profile(klass, mdp, reg2, false);
    }
    update_mdp_by_constant(mdp, mdp_delta);

    bind(profile_continue);
  }
}

void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
  if (ProfileInterpreter) {
    Label profile_continue;

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(mdp, profile_continue);

    // Update the default case count.
    increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset()));

    // The method data pointer needs to be updated.
    update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset()));

    bind(profile_continue);
  }
}

// Kills: index, scratch1, scratch2.
void InterpreterMacroAssembler::profile_switch_case(Register index,
                                                    Register mdp,
                                                    Register scratch1,
                                                    Register scratch2) {
  if (ProfileInterpreter) {
    Label profile_continue;
    assert_different_registers(index, mdp, scratch1, scratch2);

    // If no method data exists, go to profile_continue.
    test_method_data_pointer(mdp, profile_continue);

    // Build the base (index * per_case_size_in_bytes()) +
    // case_array_offset_in_bytes().
    z_sllg(index, index, exact_log2(in_bytes(MultiBranchData::per_case_size())));
    add2reg(index, in_bytes(MultiBranchData::case_array_offset()));

    // Add the calculated base to the mdp -> address of the case' data.
    Address case_data_addr(mdp, index);
    Register case_data = scratch1;
    load_address(case_data, case_data_addr);

    // Update the case count.
    increment_mdp_data_at(case_data,
                          in_bytes(MultiBranchData::relative_count_offset()),
                          scratch2);

    // The method data pointer needs to be updated.
    update_mdp_by_offset(mdp,
                         index,
                         in_bytes(MultiBranchData::relative_displacement_offset()));

    bind(profile_continue);
  }
}

// kills: R0, R1, flags, loads klass from obj (if not null)
void InterpreterMacroAssembler::profile_obj_type(Register obj, Address mdo_addr, Register klass, bool cmp_done) {
  NearLabel null_seen, init_klass, do_nothing, do_update;

  // Klass = obj is allowed.
  const Register tmp = Z_R1;
  assert_different_registers(obj, mdo_addr.base(), tmp, Z_R0);
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