2575604b41
git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1321 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
103 lines
3.6 KiB
Plaintext
103 lines
3.6 KiB
Plaintext
#ifndef __MEM_ACCESS_BIT_FLIP_AH__
|
|
#define __MEM_ACCESS_BIT_FLIP_AH__
|
|
|
|
#include "config/FailConfig.hpp"
|
|
|
|
#ifdef CONFIG_FI_MEM_ACCESS_BITFLIP
|
|
|
|
#include <iostream>
|
|
#include <cstdlib>
|
|
#include <ctime>
|
|
|
|
#include "bochs.h"
|
|
#include "../../controller/EventList.hpp"
|
|
#include "../../controller/Event.hpp"
|
|
|
|
// FIXME: This is deprecated stuff. Delete this file.
|
|
|
|
using namespace std;
|
|
|
|
// FIXME this code doesn't make any sense for the read_virtual_% functions
|
|
// (the fault would need to be injected into their *return* value)
|
|
|
|
aspect MemAccessBitFlip
|
|
{
|
|
pointcut injection_methods()
|
|
= "% ...::bx_cpu_c::read_virtual_%(...)" || // -> access32/64.cc
|
|
/*
|
|
"% ...::bx_cpu_c::read_RMW_virtual_%(...)" || // -> access32.cc
|
|
"% ...::bx_cpu_c::system_read_%(...)" || // -> access.cc
|
|
"% ...::bx_cpu_c::v2h_read_byte(...)" || // -> access.cc
|
|
*/
|
|
"% ...::bx_cpu_c::write_virtual_%(...)"; // -> access32/64.cc
|
|
/*
|
|
"% ...::bx_cpu_c::write_RMW_virtual_%(...)" || // -> access32.cc
|
|
"% ...::bx_cpu_c::write_new_stack_%(...)" || // -> access32/64.cc
|
|
"% ...::bx_cpu_c::system_write_%(...)" || // -> access.cc
|
|
"% ...::bx_cpu_c::v2h_write_byte(...)"; // -> access.cc
|
|
*/
|
|
|
|
|
|
//
|
|
// Injects a bitflip each time the guest system requests to write/read
|
|
// data to/from RAM at the (hardcoded) addresses defined above:
|
|
//
|
|
// Event source: "memory write/read access"
|
|
//
|
|
advice execution (injection_methods()) : before ()
|
|
{
|
|
for(size_t i = 0; i < fi::evbuf.getEventCount(); i++) // check for active events
|
|
{
|
|
fi::SimpleBitFlip* pEv = dynamic_cast<fi::SimpleBitFlip*>(fi::evbuf.getEvent(i)); // FIXME: Performance verbessern
|
|
if(pEv && *(tjp->arg<1>())/*typed!*/ == pEv->getAddress())
|
|
{
|
|
cout << " " << tjp->signature() << endl;
|
|
|
|
// Get a pointer to the data that should be written to RAM
|
|
// *before* it is actually written:
|
|
Bit32u* pData = (Bit32u*)(tjp->arg(JoinPoint::ARGS-1));
|
|
|
|
// Flip bit at position pEv->getBitPos():
|
|
char* ptr = (char*)pData; // For simplification we're just looking at the
|
|
// first byte of the data
|
|
ptr[0] = (ptr[0]) ^ (pEv->getMask() << pEv->getBitPos());
|
|
|
|
cout << " >>> Bit flipped at index " << pEv->getBitPos()
|
|
<< " at address 0x" << hex << (*(tjp->arg<1>())) << "!" << endl;
|
|
fi::evbuf.fireEvent(pEv);
|
|
// Continue... (maybe more events to process)
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
//
|
|
// Shows the mapping of a virtual address (within eCos) to a *host* address:
|
|
//
|
|
if(g_fEnableInjection) // event fired?
|
|
{
|
|
g_fEnableInjection = false;
|
|
const unsigned SEGMENT_SELECTOR_IDX = 2; // always the code segment (seg-base-addr should be zero)
|
|
const bx_address logicalAddr = MEM_ADDR_TO_INJECT; // offset within the segment ("local eCos address")
|
|
|
|
// Get the linear address:
|
|
Bit32u linearAddr = pThis->get_laddr32(SEGMENT_SELECTOR_IDX/ *seg* /, logicalAddr/ *offset* /);
|
|
// Map the linear address to the physical address:
|
|
bx_phy_address physicalAddr;
|
|
bx_bool fValid = pThis->dbg_xlate_linear2phy(linearAddr, (bx_phy_address*)&physicalAddr);
|
|
// Determine the *host* address of the physical address:
|
|
Bit8u* hostAddr = BX_MEM(0)->getHostMemAddr(pThis, physicalAddr, BX_READ);
|
|
// Now, hostAddr contains the "final" address where we are allowed to inject errors:
|
|
*(unsigned*)hostAddr = BAD_VALUE; // inject error
|
|
if(!fValid)
|
|
printf("[Error]: Could not map logical address to host address.\n");
|
|
else
|
|
printf("[Info]: Error injected at logical addr %p (host addr %p).\n", logicalAddr, hostAddr);
|
|
}
|
|
*/
|
|
};
|
|
|
|
#endif // CONFIG_FI_MEM_ACCESS_BITFLIP
|
|
|
|
#endif // __MEM_ACCESS_BIT_FLIP_AH__
|
|
|