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/**************************************************************************
*
* Copyright 2011 Jose Fonseca
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#include <assert.h>
#include <string.h>
#include <iostream>
#include <algorithm>
#include "retrace.hpp"
#include "retrace_swizzle.hpp"
static void retrace_malloc(trace::Call &call) {
size_t size = call.arg(0).toUInt();
unsigned long long address = call.ret->toUIntPtr();
if (!address) {
return;
}
void *buffer = malloc(size);
if (!buffer) {
std::cerr << "error: failed to allocate " << size << " bytes.";
return;
}
retrace::addRegion(call, address, buffer, size);
}
static void retrace_memcpy(trace::Call &call) {
void * destPtr;
size_t destLen;
retrace::toRange(call.arg(0), destPtr, destLen);
void * srcPtr;
size_t srcLen;
retrace::toRange(call.arg(1), srcPtr, srcLen);
size_t n = call.arg(2).toUInt();
if (!destPtr || !srcPtr || !n) {
return;
}
if (n > destLen) {
retrace::warning(call) << "dest buffer overflow of " << n - destLen << " bytes\n";
}
if (n > srcLen) {
retrace::warning(call) << "src buffer overflow of " << n - srcLen << " bytes\n";
}
n = std::min(n, destLen);
n = std::min(n, srcLen);
memcpy(destPtr, srcPtr, n);
}
const retrace::Entry retrace::stdc_callbacks[] = {
{"malloc", &retrace_malloc},
{"memcpy", &retrace_memcpy},
{NULL, NULL}
};
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