teak-llvm/llvm/lib/Support/MemoryObject.cpp

//===- MemoryObject.cpp - Abstract memory interface -------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/MemoryObject.h"

namespace llvm {
  
  MemoryObject::~MemoryObject() {
  }
  
  int MemoryObject::readBytes(uint64_t address,
                              uint64_t size,
                              uint8_t* buf,
                              uint64_t* copied) const {
    uint64_t current = address;
    uint64_t limit = getBase() + getExtent();
    
    while (current - address < size && current < limit) {
      if (readByte(current, &buf[(current - address)]))
        return -1;
      
      current++;
    }
    
    if (copied)
      *copied = current - address;
    
    return 0;
  }

}