src/hotspot/cpu/ppc/vtableStubs_ppc_64.cpp

*** 1,8 ****
  /*
!  * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,8 ----
  /*
!  * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2012, 2021 SAP SE. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 70,82 ****
      int load_const_maxLen = 5*BytesPerInstWord;  // load_const generates 5 instructions. Assume that as max size for laod_const_optimized
      int offs = __ load_const_optimized(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr(), R12_scratch2, true);
      slop_delta  = load_const_maxLen - (__ pc() - start_pc);
      slop_bytes += slop_delta;
      assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta);
!     __ lwz(R12_scratch2, offs, R11_scratch1);
      __ addi(R12_scratch2, R12_scratch2, 1);
!     __ stw(R12_scratch2, offs, R11_scratch1);
    }
  #endif
  
    assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
  
--- 70,82 ----
      int load_const_maxLen = 5*BytesPerInstWord;  // load_const generates 5 instructions. Assume that as max size for laod_const_optimized
      int offs = __ load_const_optimized(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr(), R12_scratch2, true);
      slop_delta  = load_const_maxLen - (__ pc() - start_pc);
      slop_bytes += slop_delta;
      assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta);
!     __ ld(R12_scratch2, offs, R11_scratch1);
      __ addi(R12_scratch2, R12_scratch2, 1);
!     __ std(R12_scratch2, offs, R11_scratch1);
    }
  #endif
  
    assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
  
*** 138,147 ****
--- 138,148 ----
    VtableStub* s = new(stub_code_length) VtableStub(false, itable_index);
    // Can be NULL if there is no free space in the code cache.
    if (s == NULL) {
      return NULL;
    }
+ 
    // Count unused bytes in instruction sequences of variable size.
    // We add them to the computed buffer size in order to avoid
    // overflow in subsequently generated stubs.
    address   start_pc;
    int       slop_bytes = 8; // just a two-instruction safety net
*** 157,169 ****
      start_pc = __ pc();
      int offs = __ load_const_optimized(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr(), R12_scratch2, true);
      slop_delta  = load_const_maxLen - (__ pc() - start_pc);
      slop_bytes += slop_delta;
      assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta);
!     __ lwz(R12_scratch2, offs, R11_scratch1);
      __ addi(R12_scratch2, R12_scratch2, 1);
!     __ stw(R12_scratch2, offs, R11_scratch1);
    }
  #endif
  
    assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
  
--- 158,170 ----
      start_pc = __ pc();
      int offs = __ load_const_optimized(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr(), R12_scratch2, true);
      slop_delta  = load_const_maxLen - (__ pc() - start_pc);
      slop_bytes += slop_delta;
      assert(slop_delta >= 0, "negative slop(%d) encountered, adjust code size estimate!", slop_delta);
!     __ ld(R12_scratch2, offs, R11_scratch1);
      __ addi(R12_scratch2, R12_scratch2, 1);
!     __ std(R12_scratch2, offs, R11_scratch1);
    }
  #endif
  
    assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");