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Ahmed Bougachaef993562013-05-24 01:07:04 +00001//===- lib/Support/StringRefMemoryObject.cpp --------------------*- C++ -*-===//
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/StringRefMemoryObject.h"
11
12using namespace llvm;
13
14int StringRefMemoryObject::readByte(uint64_t Addr, uint8_t *Byte) const {
15 if (Addr >= Base + getExtent() || Addr < Base)
16 return -1;
17 *Byte = Bytes[Addr - Base];
18 return 0;
19}
20
21int StringRefMemoryObject::readBytes(uint64_t Addr,
22 uint64_t Size,
23 uint8_t *Buf,
24 uint64_t *Copied) const {
25 if (Addr >= Base + getExtent() || Addr < Base)
26 return -1;
27 uint64_t Offset = Addr - Base;
28 if (Size > getExtent() - Offset)
29 Size = getExtent() - Offset;
30 memcpy(Buf, Bytes.data() + Offset, Size);
31 if (Copied)
32 *Copied = Size;
33 return 0;
34}