Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/share/vm/shark/sharkCodeBuffer.hpp	Wed Aug 11 05:51:21 2010 -0700
     1.3 @@ -0,0 +1,87 @@
     1.4 +/*
     1.5 + * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
     1.6 + * Copyright 2009 Red Hat, Inc.
     1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.8 + *
     1.9 + * This code is free software; you can redistribute it and/or modify it
    1.10 + * under the terms of the GNU General Public License version 2 only, as
    1.11 + * published by the Free Software Foundation.
    1.12 + *
    1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.15 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.16 + * version 2 for more details (a copy is included in the LICENSE file that
    1.17 + * accompanied this code).
    1.18 + *
    1.19 + * You should have received a copy of the GNU General Public License version
    1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.22 + *
    1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.24 + * or visit www.oracle.com if you need additional information or have any
    1.25 + * questions.
    1.26 + *
    1.27 + */
    1.28 +
    1.29 +class SharkCodeBuffer : public StackObj {
    1.30 + public:
    1.31 +  SharkCodeBuffer(MacroAssembler* masm)
    1.32 +    : _masm(masm), _base_pc(NULL) {}
    1.33 +
    1.34 + private:
    1.35 +  MacroAssembler* _masm;
    1.36 +  llvm::Value*    _base_pc;
    1.37 +
    1.38 + private:
    1.39 +  MacroAssembler* masm() const {
    1.40 +    return _masm;
    1.41 +  }
    1.42 +
    1.43 + public:
    1.44 +  llvm::Value* base_pc() const {
    1.45 +    return _base_pc;
    1.46 +  }
    1.47 +  void set_base_pc(llvm::Value* base_pc) {
    1.48 +    assert(_base_pc == NULL, "only do this once");
    1.49 +    _base_pc = base_pc;
    1.50 +  }
    1.51 +
    1.52 +  // Allocate some space in the buffer and return its address.
    1.53 +  // This buffer will have been relocated by the time the method
    1.54 +  // is installed, so you can't inline the result in code.
    1.55 + public:
    1.56 +  void* malloc(size_t size) const {
    1.57 +    masm()->align(BytesPerWord);
    1.58 +    void *result = masm()->pc();
    1.59 +    masm()->advance(size);
    1.60 +    return result;
    1.61 +  }
    1.62 +
    1.63 +  // Create a unique offset in the buffer.
    1.64 + public:
    1.65 +  int create_unique_offset() const {
    1.66 +    int offset = masm()->offset();
    1.67 +    masm()->advance(1);
    1.68 +    return offset;
    1.69 +  }
    1.70 +
    1.71 +  // Inline an oop into the buffer and return its offset.
    1.72 + public:
    1.73 +  int inline_oop(jobject object) const {
    1.74 +    masm()->align(BytesPerWord);
    1.75 +    int offset = masm()->offset();
    1.76 +    masm()->store_oop(object);
    1.77 +    return offset;
    1.78 +  }
    1.79 +
    1.80 +  // Inline a block of non-oop data into the buffer and return its offset.
    1.81 + public:
    1.82 +  int inline_data(void *src, size_t size) const {
    1.83 +    masm()->align(BytesPerWord);
    1.84 +    int offset = masm()->offset();
    1.85 +    void *dst = masm()->pc();
    1.86 +    masm()->advance(size);
    1.87 +    memcpy(dst, src, size);
    1.88 +    return offset;
    1.89 +  }
    1.90 +};