639 lines
23 KiB
C++
639 lines
23 KiB
C++
/*
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* Copyright (c) 2003-2004 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Gabe Black
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* Ali Saidi
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*/
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#include "arch/sparc/asi.hh"
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#include "arch/sparc/handlers.hh"
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#include "arch/sparc/isa_traits.hh"
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#include "arch/sparc/process.hh"
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#include "arch/sparc/types.hh"
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#include "base/loader/object_file.hh"
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#include "base/loader/elf_object.hh"
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#include "base/misc.hh"
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#include "cpu/thread_context.hh"
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#include "mem/page_table.hh"
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#include "sim/process_impl.hh"
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#include "mem/translating_port.hh"
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#include "sim/system.hh"
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using namespace std;
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using namespace SparcISA;
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SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile,
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System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
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std::vector<std::string> &argv, std::vector<std::string> &envp,
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const std::string &cwd,
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uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid,
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uint64_t _pid, uint64_t _ppid)
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: LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
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argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid)
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{
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// XXX all the below need to be updated for SPARC - Ali
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brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
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brk_point = roundUp(brk_point, VMPageSize);
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// Set pointer for next thread stack. Reserve 8M for main stack.
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next_thread_stack_base = stack_base - (8 * 1024 * 1024);
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//Initialize these to 0s
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fillStart = 0;
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spillStart = 0;
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}
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void SparcLiveProcess::handleTrap(int trapNum, ThreadContext *tc)
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{
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switch(trapNum)
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{
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case 0x03: //Flush window trap
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warn("Ignoring request to flush register windows.\n");
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break;
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default:
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panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum);
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}
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}
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void
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Sparc32LiveProcess::startup()
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{
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argsInit(32 / 8, VMPageSize);
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//From the SPARC ABI
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//The process runs in user mode with 32 bit addresses
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threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x0a);
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//Setup default FP state
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threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0);
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threadContexts[0]->setMiscRegNoEffect(MISCREG_TICK, 0);
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//
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/*
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* Register window management registers
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*/
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//No windows contain info from other programs
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
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threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0);
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//There are no windows to pop
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
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threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0);
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//All windows are available to save into
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
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threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2);
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//All windows are "clean"
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
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threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows);
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//Start with register window 0
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threadContexts[0]->setMiscRegNoEffect(MISCREG_CWP, 0);
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//Always use spill and fill traps 0
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0);
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threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0);
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//Set the trap level to 0
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threadContexts[0]->setMiscRegNoEffect(MISCREG_TL, 0);
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//Set the ASI register to something fixed
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threadContexts[0]->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY);
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/*
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* T1 specific registers
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*/
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//Turn on the icache, dcache, dtb translation, and itb translation.
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threadContexts[0]->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 15);
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}
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void
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Sparc64LiveProcess::startup()
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{
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argsInit(sizeof(IntReg), VMPageSize);
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//From the SPARC ABI
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//The process runs in user mode
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threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x02);
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//Setup default FP state
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threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0);
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threadContexts[0]->setMiscRegNoEffect(MISCREG_TICK, 0);
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/*
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* Register window management registers
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*/
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//No windows contain info from other programs
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
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threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0);
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//There are no windows to pop
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
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threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0);
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//All windows are available to save into
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
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threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2);
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//All windows are "clean"
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
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threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows);
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//Start with register window 0
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threadContexts[0]->setMiscRegNoEffect(MISCREG_CWP, 0);
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//Always use spill and fill traps 0
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//threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0);
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threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0);
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//Set the trap level to 0
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threadContexts[0]->setMiscRegNoEffect(MISCREG_TL, 0);
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//Set the ASI register to something fixed
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threadContexts[0]->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY);
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/*
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* T1 specific registers
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*/
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//Turn on the icache, dcache, dtb translation, and itb translation.
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threadContexts[0]->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 15);
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}
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M5_32_auxv_t::M5_32_auxv_t(int32_t type, int32_t val)
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{
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a_type = TheISA::htog(type);
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a_val = TheISA::htog(val);
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}
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M5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val)
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{
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a_type = TheISA::htog(type);
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a_val = TheISA::htog(val);
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}
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void
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Sparc64LiveProcess::argsInit(int intSize, int pageSize)
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{
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typedef M5_64_auxv_t auxv_t;
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Process::startup();
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string filename;
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if(argv.size() < 1)
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filename = "";
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else
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filename = argv[0];
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Addr alignmentMask = ~(intSize - 1);
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// load object file into target memory
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objFile->loadSections(initVirtMem);
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enum hardwareCaps
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{
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M5_HWCAP_SPARC_FLUSH = 1,
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M5_HWCAP_SPARC_STBAR = 2,
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M5_HWCAP_SPARC_SWAP = 4,
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M5_HWCAP_SPARC_MULDIV = 8,
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M5_HWCAP_SPARC_V9 = 16,
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//This one should technically only be set
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//if there is a cheetah or cheetah_plus tlb,
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//but we'll use it all the time
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M5_HWCAP_SPARC_ULTRA3 = 32
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};
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const int64_t hwcap =
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M5_HWCAP_SPARC_FLUSH |
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M5_HWCAP_SPARC_STBAR |
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M5_HWCAP_SPARC_SWAP |
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M5_HWCAP_SPARC_MULDIV |
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M5_HWCAP_SPARC_V9 |
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M5_HWCAP_SPARC_ULTRA3;
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//Setup the auxilliary vectors. These will already have endian conversion.
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//Auxilliary vectors are loaded only for elf formatted executables.
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ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
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if(elfObject)
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{
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//Bits which describe the system hardware capabilities
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auxv.push_back(auxv_t(M5_AT_HWCAP, hwcap));
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//The system page size
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auxv.push_back(auxv_t(M5_AT_PAGESZ, SparcISA::VMPageSize));
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//Defined to be 100 in the kernel source.
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//Frequency at which times() increments
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auxv.push_back(auxv_t(M5_AT_CLKTCK, 100));
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// For statically linked executables, this is the virtual address of the
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// program header tables if they appear in the executable image
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auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable()));
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// This is the size of a program header entry from the elf file.
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auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize()));
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// This is the number of program headers from the original elf file.
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auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount()));
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//This is the address of the elf "interpreter", It should be set
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//to 0 for regular executables. It should be something else
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//(not sure what) for dynamic libraries.
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auxv.push_back(auxv_t(M5_AT_BASE, 0));
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//This is hardwired to 0 in the elf loading code in the kernel
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auxv.push_back(auxv_t(M5_AT_FLAGS, 0));
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//The entry point to the program
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auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint()));
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//Different user and group IDs
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auxv.push_back(auxv_t(M5_AT_UID, uid()));
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auxv.push_back(auxv_t(M5_AT_EUID, euid()));
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auxv.push_back(auxv_t(M5_AT_GID, gid()));
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auxv.push_back(auxv_t(M5_AT_EGID, egid()));
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//Whether to enable "secure mode" in the executable
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auxv.push_back(auxv_t(M5_AT_SECURE, 0));
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}
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//Figure out how big the initial stack needs to be
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// The unaccounted for 0 at the top of the stack
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int mysterious_size = intSize;
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//This is the name of the file which is present on the initial stack
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//It's purpose is to let the user space linker examine the original file.
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int file_name_size = filename.size() + 1;
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int env_data_size = 0;
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for (int i = 0; i < envp.size(); ++i) {
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env_data_size += envp[i].size() + 1;
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}
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int arg_data_size = 0;
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for (int i = 0; i < argv.size(); ++i) {
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arg_data_size += argv[i].size() + 1;
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}
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//The info_block needs to be padded so it's size is a multiple of the
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//alignment mask. Also, it appears that there needs to be at least some
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//padding, so if the size is already a multiple, we need to increase it
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//anyway.
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int info_block_size =
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(file_name_size +
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env_data_size +
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arg_data_size +
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intSize) & alignmentMask;
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int info_block_padding =
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info_block_size -
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file_name_size -
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env_data_size -
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arg_data_size;
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//Each auxilliary vector is two 8 byte words
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int aux_array_size = intSize * 2 * (auxv.size() + 1);
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int envp_array_size = intSize * (envp.size() + 1);
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int argv_array_size = intSize * (argv.size() + 1);
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int argc_size = intSize;
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int window_save_size = intSize * 16;
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int space_needed =
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mysterious_size +
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info_block_size +
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aux_array_size +
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envp_array_size +
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argv_array_size +
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argc_size +
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window_save_size;
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stack_min = stack_base - space_needed;
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stack_min &= alignmentMask;
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stack_size = stack_base - stack_min;
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// map memory
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pTable->allocate(roundDown(stack_min, pageSize),
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roundUp(stack_size, pageSize));
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// map out initial stack contents
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Addr mysterious_base = stack_base - mysterious_size;
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Addr file_name_base = mysterious_base - file_name_size;
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Addr env_data_base = file_name_base - env_data_size;
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Addr arg_data_base = env_data_base - arg_data_size;
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Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding;
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Addr envp_array_base = auxv_array_base - envp_array_size;
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Addr argv_array_base = envp_array_base - argv_array_size;
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Addr argc_base = argv_array_base - argc_size;
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#ifndef NDEBUG
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// only used in DPRINTF
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Addr window_save_base = argc_base - window_save_size;
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#endif
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DPRINTF(Sparc, "The addresses of items on the initial stack:\n");
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DPRINTF(Sparc, "0x%x - file name\n", file_name_base);
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DPRINTF(Sparc, "0x%x - env data\n", env_data_base);
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DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base);
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DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base);
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DPRINTF(Sparc, "0x%x - envp array\n", envp_array_base);
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DPRINTF(Sparc, "0x%x - argv array\n", argv_array_base);
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DPRINTF(Sparc, "0x%x - argc \n", argc_base);
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DPRINTF(Sparc, "0x%x - window save\n", window_save_base);
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DPRINTF(Sparc, "0x%x - stack min\n", stack_min);
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// write contents to stack
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// figure out argc
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uint64_t argc = argv.size();
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uint64_t guestArgc = TheISA::htog(argc);
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//Write out the mysterious 0
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uint64_t mysterious_zero = 0;
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initVirtMem->writeBlob(mysterious_base,
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(uint8_t*)&mysterious_zero, mysterious_size);
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//Write the file name
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initVirtMem->writeString(file_name_base, filename.c_str());
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//Copy the aux stuff
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for(int x = 0; x < auxv.size(); x++)
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{
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initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize,
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(uint8_t*)&(auxv[x].a_type), intSize);
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initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
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(uint8_t*)&(auxv[x].a_val), intSize);
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}
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//Write out the terminating zeroed auxilliary vector
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const uint64_t zero = 0;
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initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(),
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(uint8_t*)&zero, 2 * intSize);
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copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
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copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
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initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
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//Stuff the trap handlers into the processes address space.
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//Since the stack grows down and is the highest area in the processes
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//address space, we can put stuff above it and stay out of the way.
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int fillSize = sizeof(MachInst) * numFillInsts;
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int spillSize = sizeof(MachInst) * numSpillInsts;
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fillStart = stack_base;
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spillStart = fillStart + fillSize;
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initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler64, fillSize);
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initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler64, spillSize);
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//Set up the thread context to start running the process
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assert(NumArgumentRegs >= 2);
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threadContexts[0]->setIntReg(ArgumentReg[0], argc);
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threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base);
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threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias);
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Addr prog_entry = objFile->entryPoint();
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threadContexts[0]->setPC(prog_entry);
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threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
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threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
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//Align the "stack_min" to a page boundary.
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stack_min = roundDown(stack_min, pageSize);
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// num_processes++;
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}
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void
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Sparc32LiveProcess::argsInit(int intSize, int pageSize)
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{
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typedef M5_32_auxv_t auxv_t;
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Process::startup();
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string filename;
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if(argv.size() < 1)
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filename = "";
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else
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filename = argv[0];
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//Even though this is a 32 bit process, the ABI says we still need to
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//maintain double word alignment of the stack pointer.
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Addr alignmentMask = ~(8 - 1);
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// load object file into target memory
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objFile->loadSections(initVirtMem);
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//These are the auxilliary vector types
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enum auxTypes
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{
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SPARC_AT_HWCAP = 16,
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SPARC_AT_PAGESZ = 6,
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SPARC_AT_CLKTCK = 17,
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SPARC_AT_PHDR = 3,
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SPARC_AT_PHENT = 4,
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SPARC_AT_PHNUM = 5,
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SPARC_AT_BASE = 7,
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SPARC_AT_FLAGS = 8,
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SPARC_AT_ENTRY = 9,
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SPARC_AT_UID = 11,
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SPARC_AT_EUID = 12,
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SPARC_AT_GID = 13,
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|
SPARC_AT_EGID = 14,
|
|
SPARC_AT_SECURE = 23
|
|
};
|
|
|
|
enum hardwareCaps
|
|
{
|
|
M5_HWCAP_SPARC_FLUSH = 1,
|
|
M5_HWCAP_SPARC_STBAR = 2,
|
|
M5_HWCAP_SPARC_SWAP = 4,
|
|
M5_HWCAP_SPARC_MULDIV = 8,
|
|
M5_HWCAP_SPARC_V9 = 16,
|
|
//This one should technically only be set
|
|
//if there is a cheetah or cheetah_plus tlb,
|
|
//but we'll use it all the time
|
|
M5_HWCAP_SPARC_ULTRA3 = 32
|
|
};
|
|
|
|
const int64_t hwcap =
|
|
M5_HWCAP_SPARC_FLUSH |
|
|
M5_HWCAP_SPARC_STBAR |
|
|
M5_HWCAP_SPARC_SWAP |
|
|
M5_HWCAP_SPARC_MULDIV |
|
|
M5_HWCAP_SPARC_V9 |
|
|
M5_HWCAP_SPARC_ULTRA3;
|
|
|
|
|
|
//Setup the auxilliary vectors. These will already have endian conversion.
|
|
//Auxilliary vectors are loaded only for elf formatted executables.
|
|
ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
|
|
if(elfObject)
|
|
{
|
|
//Bits which describe the system hardware capabilities
|
|
auxv.push_back(auxv_t(SPARC_AT_HWCAP, hwcap));
|
|
//The system page size
|
|
auxv.push_back(auxv_t(SPARC_AT_PAGESZ, SparcISA::VMPageSize));
|
|
//Defined to be 100 in the kernel source.
|
|
//Frequency at which times() increments
|
|
auxv.push_back(auxv_t(SPARC_AT_CLKTCK, 100));
|
|
// For statically linked executables, this is the virtual address of the
|
|
// program header tables if they appear in the executable image
|
|
auxv.push_back(auxv_t(SPARC_AT_PHDR, elfObject->programHeaderTable()));
|
|
// This is the size of a program header entry from the elf file.
|
|
auxv.push_back(auxv_t(SPARC_AT_PHENT, elfObject->programHeaderSize()));
|
|
// This is the number of program headers from the original elf file.
|
|
auxv.push_back(auxv_t(SPARC_AT_PHNUM, elfObject->programHeaderCount()));
|
|
//This is the address of the elf "interpreter", It should be set
|
|
//to 0 for regular executables. It should be something else
|
|
//(not sure what) for dynamic libraries.
|
|
auxv.push_back(auxv_t(SPARC_AT_BASE, 0));
|
|
//This is hardwired to 0 in the elf loading code in the kernel
|
|
auxv.push_back(auxv_t(SPARC_AT_FLAGS, 0));
|
|
//The entry point to the program
|
|
auxv.push_back(auxv_t(SPARC_AT_ENTRY, objFile->entryPoint()));
|
|
//Different user and group IDs
|
|
auxv.push_back(auxv_t(SPARC_AT_UID, uid()));
|
|
auxv.push_back(auxv_t(SPARC_AT_EUID, euid()));
|
|
auxv.push_back(auxv_t(SPARC_AT_GID, gid()));
|
|
auxv.push_back(auxv_t(SPARC_AT_EGID, egid()));
|
|
//Whether to enable "secure mode" in the executable
|
|
auxv.push_back(auxv_t(SPARC_AT_SECURE, 0));
|
|
}
|
|
|
|
//Figure out how big the initial stack needs to be
|
|
|
|
// The unaccounted for 8 byte 0 at the top of the stack
|
|
int mysterious_size = 8;
|
|
|
|
//This is the name of the file which is present on the initial stack
|
|
//It's purpose is to let the user space linker examine the original file.
|
|
int file_name_size = filename.size() + 1;
|
|
|
|
int env_data_size = 0;
|
|
for (int i = 0; i < envp.size(); ++i) {
|
|
env_data_size += envp[i].size() + 1;
|
|
}
|
|
int arg_data_size = 0;
|
|
for (int i = 0; i < argv.size(); ++i) {
|
|
arg_data_size += argv[i].size() + 1;
|
|
}
|
|
|
|
//The info_block - This seems to need an pad for some reason.
|
|
int info_block_size =
|
|
(mysterious_size +
|
|
file_name_size +
|
|
env_data_size +
|
|
arg_data_size + intSize);
|
|
|
|
//Each auxilliary vector is two 4 byte words
|
|
int aux_array_size = intSize * 2 * (auxv.size() + 1);
|
|
|
|
int envp_array_size = intSize * (envp.size() + 1);
|
|
int argv_array_size = intSize * (argv.size() + 1);
|
|
|
|
int argc_size = intSize;
|
|
int window_save_size = intSize * 16;
|
|
|
|
int space_needed =
|
|
info_block_size +
|
|
aux_array_size +
|
|
envp_array_size +
|
|
argv_array_size +
|
|
argc_size +
|
|
window_save_size;
|
|
|
|
stack_min = stack_base - space_needed;
|
|
stack_min &= alignmentMask;
|
|
stack_size = stack_base - stack_min;
|
|
|
|
// map memory
|
|
pTable->allocate(roundDown(stack_min, pageSize),
|
|
roundUp(stack_size, pageSize));
|
|
|
|
// map out initial stack contents
|
|
uint32_t window_save_base = stack_min;
|
|
uint32_t argc_base = window_save_base + window_save_size;
|
|
uint32_t argv_array_base = argc_base + argc_size;
|
|
uint32_t envp_array_base = argv_array_base + argv_array_size;
|
|
uint32_t auxv_array_base = envp_array_base + envp_array_size;
|
|
//The info block is pushed up against the top of the stack, while
|
|
//the rest of the initial stack frame is aligned to an 8 byte boudary.
|
|
uint32_t arg_data_base = stack_base - info_block_size + intSize;
|
|
uint32_t env_data_base = arg_data_base + arg_data_size;
|
|
uint32_t file_name_base = env_data_base + env_data_size;
|
|
uint32_t mysterious_base = file_name_base + file_name_size;
|
|
|
|
DPRINTF(Sparc, "The addresses of items on the initial stack:\n");
|
|
DPRINTF(Sparc, "0x%x - file name\n", file_name_base);
|
|
DPRINTF(Sparc, "0x%x - env data\n", env_data_base);
|
|
DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base);
|
|
DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base);
|
|
DPRINTF(Sparc, "0x%x - envp array\n", envp_array_base);
|
|
DPRINTF(Sparc, "0x%x - argv array\n", argv_array_base);
|
|
DPRINTF(Sparc, "0x%x - argc \n", argc_base);
|
|
DPRINTF(Sparc, "0x%x - window save\n", window_save_base);
|
|
DPRINTF(Sparc, "0x%x - stack min\n", stack_min);
|
|
|
|
// write contents to stack
|
|
|
|
// figure out argc
|
|
uint32_t argc = argv.size();
|
|
uint32_t guestArgc = TheISA::htog(argc);
|
|
|
|
//Write out the mysterious 0
|
|
uint64_t mysterious_zero = 0;
|
|
initVirtMem->writeBlob(mysterious_base,
|
|
(uint8_t*)&mysterious_zero, mysterious_size);
|
|
|
|
//Write the file name
|
|
initVirtMem->writeString(file_name_base, filename.c_str());
|
|
|
|
//Copy the aux stuff
|
|
for(int x = 0; x < auxv.size(); x++)
|
|
{
|
|
initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize,
|
|
(uint8_t*)&(auxv[x].a_type), intSize);
|
|
initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
|
|
(uint8_t*)&(auxv[x].a_val), intSize);
|
|
}
|
|
//Write out the terminating zeroed auxilliary vector
|
|
const uint64_t zero = 0;
|
|
initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(),
|
|
(uint8_t*)&zero, 2 * intSize);
|
|
|
|
copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
|
|
copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
|
|
|
|
initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
|
|
|
|
//Stuff the trap handlers into the processes address space.
|
|
//Since the stack grows down and is the highest area in the processes
|
|
//address space, we can put stuff above it and stay out of the way.
|
|
int fillSize = sizeof(MachInst) * numFillInsts;
|
|
int spillSize = sizeof(MachInst) * numSpillInsts;
|
|
fillStart = stack_base;
|
|
spillStart = fillStart + fillSize;
|
|
initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler32, fillSize);
|
|
initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler32, spillSize);
|
|
|
|
//Set up the thread context to start running the process
|
|
//assert(NumArgumentRegs >= 2);
|
|
//threadContexts[0]->setIntReg(ArgumentReg[0], argc);
|
|
//threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base);
|
|
threadContexts[0]->setIntReg(StackPointerReg, stack_min);
|
|
|
|
uint32_t prog_entry = objFile->entryPoint();
|
|
threadContexts[0]->setPC(prog_entry);
|
|
threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
|
|
threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
|
|
|
|
//Align the "stack_min" to a page boundary.
|
|
stack_min = roundDown(stack_min, pageSize);
|
|
|
|
// num_processes++;
|
|
}
|