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Diffstat (limited to 'sim/exec_context.hh')
-rw-r--r-- | sim/exec_context.hh | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/sim/exec_context.hh b/sim/exec_context.hh deleted file mode 100644 index 988673a0f..000000000 --- a/sim/exec_context.hh +++ /dev/null @@ -1,359 +0,0 @@ -/* - * Copyright (c) 2003 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __EXEC_CONTEXT_HH__ -#define __EXEC_CONTEXT_HH__ - -#include "host.hh" -#include "mem_req.hh" - -// forward declaration: see functional_memory.hh -class FunctionalMemory; -class PhysicalMemory; -class BaseCPU; - -#ifdef FULL_SYSTEM - -#include "alpha_memory.hh" -class MemoryController; - -#include "kernel_stats.hh" -#include "system.hh" - -#else // !FULL_SYSTEM - -#include "prog.hh" - -#endif // FULL_SYSTEM - -// -// The ExecContext object represents a functional context for -// instruction execution. It incorporates everything required for -// architecture-level functional simulation of a single thread. -// - -class ExecContext -{ - public: - enum Status { Unallocated, Active, Suspended, Halted }; - - private: - Status _status; - - public: - Status status() const { return _status; } - void setStatus(Status new_status); - -#ifdef FULL_SYSTEM - public: - KernelStats kernelStats; -#endif - - public: - RegFile regs; // correct-path register context - - // pointer to CPU associated with this context - BaseCPU *cpu; - - // Index of hardware thread context on the CPU that this represents. - int thread_num; - -#ifdef FULL_SYSTEM - - FunctionalMemory *mem; - AlphaItb *itb; - AlphaDtb *dtb; - int cpu_id; - System *system; - - // the following two fields are redundant, since we can always - // look them up through the system pointer, but we'll leave them - // here for now for convenience - MemoryController *memCtrl; - PhysicalMemory *physmem; - -#else - Process *process; - - FunctionalMemory *mem; // functional storage for process address space - - // Address space ID. Note that this is used for TIMING cache - // simulation only; all functional memory accesses should use - // one of the FunctionalMemory pointers above. - short asid; - -#endif - - - /* - * number of executed instructions, for matching with syscall trace - * points in EIO files. - */ - Counter func_exe_insn; - - // - // Count failed store conditionals so we can warn of apparent - // application deadlock situations. - unsigned storeCondFailures; - - // constructor: initialize context from given process structure -#ifdef FULL_SYSTEM - ExecContext(BaseCPU *_cpu, int _thread_num, System *_system, - AlphaItb *_itb, AlphaDtb *_dtb, FunctionalMemory *_dem, - int _cpu_id); -#else - ExecContext(BaseCPU *_cpu, int _thread_num, Process *_process, int _asid); - ExecContext(BaseCPU *_cpu, int _thread_num, FunctionalMemory *_mem, - int _asid); -#endif - virtual ~ExecContext() {} - - void regStats(const std::string &name); - -#ifdef FULL_SYSTEM - bool validInstAddr(Addr addr) { return true; } - bool validDataAddr(Addr addr) { return true; } - int getInstAsid() { return ITB_ASN_ASN(regs.ipr[TheISA::IPR_ITB_ASN]); } - int getDataAsid() { return DTB_ASN_ASN(regs.ipr[TheISA::IPR_DTB_ASN]); } - - Fault translateInstReq(MemReqPtr req) - { - return itb->translate(req); - } - - Fault translateDataReadReq(MemReqPtr req) - { - return dtb->translate(req, false); - } - - Fault translateDataWriteReq(MemReqPtr req) - { - return dtb->translate(req, true); - } - - -#else - bool validInstAddr(Addr addr) - { return process->validInstAddr(addr); } - - bool validDataAddr(Addr addr) - { return process->validDataAddr(addr); } - - int getInstAsid() { return asid; } - int getDataAsid() { return asid; } - - Fault dummyTranslation(MemReqPtr req) - { -#if 0 - assert((req->vaddr >> 48 & 0xffff) == 0); -#endif - - // put the asid in the upper 16 bits of the paddr - req->paddr = req->vaddr & ~((Addr)0xffff << sizeof(Addr) * 8 - 16); - req->paddr = req->paddr | (Addr)req->asid << sizeof(Addr) * 8 - 16; - return No_Fault; - } - Fault translateInstReq(MemReqPtr req) - { - return dummyTranslation(req); - } - Fault translateDataReadReq(MemReqPtr req) - { - return dummyTranslation(req); - } - Fault translateDataWriteReq(MemReqPtr req) - { - return dummyTranslation(req); - } - -#endif - - template <class T> - Fault read(MemReqPtr req, T& data) - { -#if defined(TARGET_ALPHA) && defined(FULL_SYSTEM) - if (req->flags & LOCKED) { - MiscRegFile *cregs = &req->xc->regs.miscRegs; - cregs->lock_addr = req->paddr; - cregs->lock_flag = true; - } -#endif - return mem->read(req, data); - } - - template <class T> - Fault write(MemReqPtr req, T& data) - { -#if defined(TARGET_ALPHA) && defined(FULL_SYSTEM) - - MiscRegFile *cregs; - - // If this is a store conditional, act appropriately - if (req->flags & LOCKED) { - cregs = &req->xc->regs.miscRegs; - - if (req->flags & UNCACHEABLE) { - // Don't update result register (see machine.def) - req->result = 2; - req->xc->storeCondFailures = 0;//Needed? [RGD] - } else { - req->result = cregs->lock_flag; - if (!cregs->lock_flag || - ((cregs->lock_addr & ~0xf) != (req->paddr & ~0xf))) { - cregs->lock_flag = false; - if (((++req->xc->storeCondFailures) % 100000) == 0) { - std::cerr << "Warning: " - << req->xc->storeCondFailures - << " consecutive store conditional failures " - << "on cpu " << req->xc->cpu_id - << std::endl; - } - return No_Fault; - } - else req->xc->storeCondFailures = 0; - } - } - - // Need to clear any locked flags on other proccessors for this - // address - // Only do this for succsful Store Conditionals and all other - // stores (WH64?) - // Unsuccesful Store Conditionals would have returned above, - // and wouldn't fall through - for(int i = 0; i < system->num_cpus; i++){ - cregs = &system->xc_array[i]->regs.miscRegs; - if((cregs->lock_addr & ~0xf) == (req->paddr & ~0xf)) { - cregs->lock_flag = false; - } - } - -#endif - return mem->write(req, data); - } - - virtual bool misspeculating(); - - - // - // New accessors for new decoder. - // - uint64_t readIntReg(int reg_idx) - { - return regs.intRegFile[reg_idx]; - } - - float readFloatRegSingle(int reg_idx) - { - return (float)regs.floatRegFile.d[reg_idx]; - } - - double readFloatRegDouble(int reg_idx) - { - return regs.floatRegFile.d[reg_idx]; - } - - uint64_t readFloatRegInt(int reg_idx) - { - return regs.floatRegFile.q[reg_idx]; - } - - void setIntReg(int reg_idx, uint64_t val) - { - regs.intRegFile[reg_idx] = val; - } - - void setFloatRegSingle(int reg_idx, float val) - { - regs.floatRegFile.d[reg_idx] = (double)val; - } - - void setFloatRegDouble(int reg_idx, double val) - { - regs.floatRegFile.d[reg_idx] = val; - } - - void setFloatRegInt(int reg_idx, uint64_t val) - { - regs.floatRegFile.q[reg_idx] = val; - } - - uint64_t readPC() - { - return regs.pc; - } - - void setNextPC(uint64_t val) - { - regs.npc = val; - } - - uint64_t readUniq() - { - return regs.miscRegs.uniq; - } - - void setUniq(uint64_t val) - { - regs.miscRegs.uniq = val; - } - - uint64_t readFpcr() - { - return regs.miscRegs.fpcr; - } - - void setFpcr(uint64_t val) - { - regs.miscRegs.fpcr = val; - } - -#ifdef FULL_SYSTEM - uint64_t readIpr(int idx, Fault &fault); - Fault setIpr(int idx, uint64_t val); - Fault hwrei(); - void ev5_trap(Fault fault); - bool simPalCheck(int palFunc); -#endif - -#ifndef FULL_SYSTEM - void syscall() - { - process->syscall(this); - } -#endif -}; - - -// for non-speculative execution context, spec_mode is always false -inline bool -ExecContext::misspeculating() -{ - return false; -} - -#endif // __EXEC_CONTEXT_HH__ |