lib/Support/MemoryObject.cpp

   1 //===- MemoryObject.cpp - Abstract memory interface -----------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/Support/MemoryObject.h"
  11 using namespace llvm;
  12
  13 MemoryObject::~MemoryObject() {
  14 }
  15
  16 int MemoryObject::readBytes(uint64_t address,
  17                             uint64_t size,
  18                             uint8_t* buf,
  19                             uint64_t* copied) {
  20   uint64_t current = address;
  21   uint64_t limit = getBase() + getExtent();
  22
  23   if (current + size > limit)
  24     return -1;
  25
  26   while (current - address < size) {
  27     if (readByte(current, &buf[(current - address)]))
  28       return -1;
  29
  30     current++;
  31   }
  32
  33   if (copied)
  34     *copied = current - address;
  35
  36   return 0;
  37 }