ac5dee6549
git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1387 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
244 lines
7.1 KiB
C++
244 lines
7.1 KiB
C++
#include <sstream>
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#include "BochsController.hpp"
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#include "BochsMemory.hpp"
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#include "BochsRegister.hpp"
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#include "../Register.hpp"
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#include "../SALInst.hpp"
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namespace fail {
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#ifdef DANCEOS_RESTORE
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bx_bool restore_bochs_request = false;
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bx_bool save_bochs_request = false;
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std::string sr_path = "";
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#endif
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bx_bool reboot_bochs_request = false;
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bx_bool interrupt_injection_request = false;
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int interrupt_to_fire = -1;
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BochsController::BochsController()
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: SimulatorController(new BochsRegisterManager(), new BochsMemoryManager()),
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m_CPUContext(NULL), m_CacheEntry(NULL)
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{
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// -------------------------------------
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// Add the general purpose register:
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#if BX_SUPPORT_X86_64
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// -- 64 bit register --
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const std::string names[] = { "RAX", "RCX", "RDX", "RBX", "RSP", "RBP", "RSI",
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"RDI", "R8", "R9", "R10", "R11", "R12", "R13",
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"R14", "R15" };
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for(unsigned short i = 0; i < 16; i++)
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{
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BxGPReg* pReg = new BxGPReg(i, 64, &(BX_CPU(0)->gen_reg[i].rrx));
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pReg->setName(names[i]);
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m_Regs->add(pReg);
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}
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#else
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// -- 32 bit register --
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const std::string names[] = { "EAX", "ECX", "EDX", "EBX", "ESP", "EBP", "ESI",
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"EDI" };
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for(unsigned short i = 0; i < 8; i++)
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{
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BxGPReg* pReg = new BxGPReg(i, 32, &(BX_CPU(0)->gen_reg[i].dword.erx));
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pReg->setName(names[i]);
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m_Regs->add(pReg);
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}
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#endif // BX_SUPPORT_X86_64
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#ifdef DEBUG
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m_Regularity = 0; // disabled
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m_Counter = 0;
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m_pDest = NULL;
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#endif
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// -------------------------------------
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// Add the Program counter register:
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#if BX_SUPPORT_X86_64
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BxPCReg* pPCReg = new BxPCReg(RID_PC, 64, &(BX_CPU(0)->gen_reg[BX_64BIT_REG_RIP].rrx));
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pPCReg->setName("RIP");
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#else
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BxPCReg* pPCReg = new BxPCReg(RID_PC, 32, &(BX_CPU(0)->gen_reg[BX_32BIT_REG_EIP].dword.erx));
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pPCReg->setName("EIP");
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#endif // BX_SUPPORT_X86_64
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// -------------------------------------
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// Add the Status register (x86 cpu FLAGS):
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BxFlagsReg* pFlagReg = new BxFlagsReg(RID_FLAGS, reinterpret_cast<regdata_t*>(&(BX_CPU(0)->eflags)));
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// Note: "eflags" is (always) of type Bit32u which matches the regdata_t only in
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// case of the 32 bit version (id est !BX_SUPPORT_X86_64). Therefor we need
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// to ensure to assign only 32 bit to the Bochs internal register variable
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// (see SAL/bochs/BochsRegister.hpp, setData) if we are in 64 bit mode.
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pFlagReg->setName("FLAGS");
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m_Regs->add(pFlagReg);
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m_Regs->add(pPCReg);
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}
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BochsController::~BochsController()
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{
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for(RegisterManager::iterator it = m_Regs->begin(); it != m_Regs->end(); it++)
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delete (*it); // free the memory, allocated in the constructor
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m_Regs->clear();
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delete m_Regs;
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delete m_Mem;
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}
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#ifdef DEBUG
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void BochsController::dbgEnableInstrPtrOutput(unsigned regularity, std::ostream* dest)
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{
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m_Regularity = regularity;
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m_pDest = dest;
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m_Counter = 0;
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}
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#endif // DEBUG
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void BochsController::onInstrPtrChanged(address_t instrPtr, address_t address_space,
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BX_CPU_C *context, bxICacheEntry_c *cache_entry)
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{
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#ifdef DEBUG
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if(m_Regularity != 0 && ++m_Counter % m_Regularity == 0)
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(*m_pDest) << "0x" << std::hex << instrPtr;
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#endif
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assert(context != NULL && "FATAL ERROR: Bochs internal member was NULL (not expected)!");
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m_CPUContext = context;
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assert(cache_entry != NULL && "FATAL ERROR: Bochs internal member was NULL (not expected)!");
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m_CacheEntry = cache_entry;
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bool do_fire = false;
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// Check for active breakpoint-events:
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bp_cache_t &buffer_cache = m_EvList.getBPBuffer();
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bp_cache_t::iterator it = buffer_cache.begin();
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while(it != buffer_cache.end())
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{
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BPEvent* pEvBreakpt = *it;
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if(pEvBreakpt->isMatching(instrPtr, address_space))
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{
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pEvBreakpt->setTriggerInstructionPointer(instrPtr);
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it = buffer_cache.makeActive(m_EvList, it);
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do_fire = true;
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// "it" has already been set to the next element (by calling
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// makeActive()):
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continue; // -> skip iterator increment
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}
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it++;
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}
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if(do_fire)
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m_EvList.fireActiveEvents();
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// Note: SimulatorController::onBreakpointEvent will not be invoked in this
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// implementation.
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}
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void BochsController::onIOPortEvent(unsigned char data, unsigned port, bool out) {
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// Check for active breakpoint-events:
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io_cache_t &buffer_cache = m_EvList.getIOBuffer();
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io_cache_t::iterator it = buffer_cache.begin();
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while(it != buffer_cache.end())
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{
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IOPortEvent* pIOPt = (*it);
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if(pIOPt->isMatching(port, out))
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{
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pIOPt->setData(data);
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it = buffer_cache.makeActive(m_EvList, it);
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// "it" has already been set to the next element (by calling
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// makeActive()):
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continue; // -> skip iterator increment
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}
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it++;
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}
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m_EvList.fireActiveEvents();
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// Note: SimulatorController::onBreakpointEvent will not be invoked in this
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// implementation.
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}
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void BochsController::save(const std::string& path)
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{
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int stat;
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stat = mkdir(path.c_str(), 0777);
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if(!(stat == 0 || errno == EEXIST))
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std::cout << "[FAIL] Can not create target-directory to save!" << std::endl;
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// TODO: (Non-)Verbose-Mode? Log-level? Maybe better: use return value to indicate failure?
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save_bochs_request = true;
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sr_path = path;
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m_CurrFlow = m_Flows.getCurrent();
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m_Flows.resume();
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}
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void BochsController::saveDone()
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{
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save_bochs_request = false;
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m_Flows.toggle(m_CurrFlow);
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}
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void BochsController::restore(const std::string& path)
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{
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clearEvents();
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restore_bochs_request = true;
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sr_path = path;
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m_CurrFlow = m_Flows.getCurrent();
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m_Flows.resume();
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}
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void BochsController::restoreDone()
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{
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restore_bochs_request = false;
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m_Flows.toggle(m_CurrFlow);
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}
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void BochsController::reboot()
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{
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clearEvents();
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reboot_bochs_request = true;
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m_CurrFlow = m_Flows.getCurrent();
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m_Flows.resume();
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}
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void BochsController::rebootDone()
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{
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reboot_bochs_request = false;
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m_Flows.toggle(m_CurrFlow);
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}
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void BochsController::fireInterrupt(unsigned irq)
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{
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interrupt_injection_request = true;
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interrupt_to_fire = irq;
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m_CurrFlow = m_Flows.getCurrent();
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m_Flows.resume();
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}
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void BochsController::fireInterruptDone()
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{
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interrupt_injection_request = false;
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m_Flows.toggle(m_CurrFlow);
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}
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void BochsController::onTimerTrigger(void* thisPtr)
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{
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// FIXME: The timer logic can be modified to use only one timer in Bochs.
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// (For now, this suffices.)
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TimerEvent* pTmEv = static_cast<TimerEvent*>(thisPtr);
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// Check for a matching TimerEvent. (In fact, we are only
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// interessted in the iterator pointing at pTmEv.):
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EventManager::iterator it = std::find(simulator.m_EvList.begin(),
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simulator.m_EvList.end(), pTmEv);
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// TODO: This has O(|m_EvList|) time complexity. We can further improve this
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// by creating a method such that makeActive(pTmEv) works as well,
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// reducing the time complexity to O(1).
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simulator.m_EvList.makeActive(it);
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simulator.m_EvList.fireActiveEvents();
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}
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const std::string& BochsController::getMnemonic() const
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{
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static std::string str;
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bxInstruction_c* pInstr = getICacheEntry()->i;
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assert(pInstr != NULL && "FATAL ERROR: Bochs internal member was NULL (not expected)!");
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const char* pszName = get_bx_opcode_name(pInstr->getIaOpcode());
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if (pszName != NULL)
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str = pszName;
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else
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str.clear();
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return str;
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}
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} // end-of-namespace: fail
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