Chris Lattner | 2a1744f | 2009-09-09 23:46:42 +0000 | [diff] [blame] | 1 | //===- MemoryObject.cpp - Abstract memory interface -----------------------===// |
Sean Callanan | 251ef61 | 2009-09-09 22:49:13 +0000 | [diff] [blame] | 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" |
Chris Lattner | 2a1744f | 2009-09-09 23:46:42 +0000 | [diff] [blame] | 11 | using namespace llvm; |
Sean Callanan | 251ef61 | 2009-09-09 22:49:13 +0000 | [diff] [blame] | 12 | |
Chris Lattner | 2a1744f | 2009-09-09 23:46:42 +0000 | [diff] [blame] | 13 | MemoryObject::~MemoryObject() { |
| 14 | } |
| 15 | |
| 16 | int MemoryObject::readBytes(uint64_t address, |
| 17 | uint64_t size, |
Benjamin Kramer | 49a6a8d | 2013-05-24 10:54:58 +0000 | [diff] [blame^] | 18 | uint8_t* buf) const { |
Chris Lattner | 2a1744f | 2009-09-09 23:46:42 +0000 | [diff] [blame] | 19 | uint64_t current = address; |
| 20 | uint64_t limit = getBase() + getExtent(); |
Benjamin Kramer | f66f76c | 2011-08-27 07:45:46 +0000 | [diff] [blame] | 21 | |
| 22 | if (current + size > limit) |
| 23 | return -1; |
| 24 | |
| 25 | while (current - address < size) { |
Chris Lattner | 2a1744f | 2009-09-09 23:46:42 +0000 | [diff] [blame] | 26 | if (readByte(current, &buf[(current - address)])) |
| 27 | return -1; |
| 28 | |
| 29 | current++; |
Sean Callanan | 251ef61 | 2009-09-09 22:49:13 +0000 | [diff] [blame] | 30 | } |
| 31 | |
Chris Lattner | 2a1744f | 2009-09-09 23:46:42 +0000 | [diff] [blame] | 32 | return 0; |
Sean Callanan | 251ef61 | 2009-09-09 22:49:13 +0000 | [diff] [blame] | 33 | } |