process.cc revision 5959
14166Sgblack@eecs.umich.edu/* 24166Sgblack@eecs.umich.edu * Copyright (c) 2003-2006 The Regents of The University of Michigan 34166Sgblack@eecs.umich.edu * All rights reserved. 44166Sgblack@eecs.umich.edu * 54166Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 64166Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are 74166Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright 84166Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 94166Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 104166Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 114166Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 124166Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 134166Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 144166Sgblack@eecs.umich.edu * this software without specific prior written permission. 154166Sgblack@eecs.umich.edu * 164166Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 174166Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 184166Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 194166Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 204166Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 214166Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 224166Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 234166Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 244166Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 254166Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 264166Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 274166Sgblack@eecs.umich.edu * 284166Sgblack@eecs.umich.edu * Authors: Gabe Black 294166Sgblack@eecs.umich.edu * Ali Saidi 304166Sgblack@eecs.umich.edu */ 314166Sgblack@eecs.umich.edu 324166Sgblack@eecs.umich.edu/* 334166Sgblack@eecs.umich.edu * Copyright (c) 2007 The Hewlett-Packard Development Company 344166Sgblack@eecs.umich.edu * All rights reserved. 354166Sgblack@eecs.umich.edu * 364166Sgblack@eecs.umich.edu * Redistribution and use of this software in source and binary forms, 374166Sgblack@eecs.umich.edu * with or without modification, are permitted provided that the 384166Sgblack@eecs.umich.edu * following conditions are met: 394166Sgblack@eecs.umich.edu * 404166Sgblack@eecs.umich.edu * The software must be used only for Non-Commercial Use which means any 414166Sgblack@eecs.umich.edu * use which is NOT directed to receiving any direct monetary 424166Sgblack@eecs.umich.edu * compensation for, or commercial advantage from such use. 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IN NO EVENT SHALL THE COPYRIGHT 784166Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 794166Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 804166Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 814166Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 824166Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 834166Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 844166Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 854166Sgblack@eecs.umich.edu * 864166Sgblack@eecs.umich.edu * Authors: Gabe Black 874166Sgblack@eecs.umich.edu */ 884166Sgblack@eecs.umich.edu 894166Sgblack@eecs.umich.edu#include "arch/x86/isa_traits.hh" 904166Sgblack@eecs.umich.edu#include "arch/x86/process.hh" 914863Sgblack@eecs.umich.edu#include "arch/x86/segmentregs.hh" 924166Sgblack@eecs.umich.edu#include "arch/x86/types.hh" 934166Sgblack@eecs.umich.edu#include "base/loader/object_file.hh" 944166Sgblack@eecs.umich.edu#include "base/loader/elf_object.hh" 954166Sgblack@eecs.umich.edu#include "base/misc.hh" 965004Sgblack@eecs.umich.edu#include "base/trace.hh" 974166Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 984166Sgblack@eecs.umich.edu#include "mem/page_table.hh" 994166Sgblack@eecs.umich.edu#include "mem/translating_port.hh" 1004434Ssaidi@eecs.umich.edu#include "sim/process_impl.hh" 1015956Sgblack@eecs.umich.edu#include "sim/syscall_emul.hh" 1024166Sgblack@eecs.umich.edu#include "sim/system.hh" 1034166Sgblack@eecs.umich.edu 1044166Sgblack@eecs.umich.eduusing namespace std; 1054166Sgblack@eecs.umich.eduusing namespace X86ISA; 1064166Sgblack@eecs.umich.edu 1075958Sgblack@eecs.umich.edustatic const int ReturnValueReg = INTREG_RAX; 1085958Sgblack@eecs.umich.edustatic const int ArgumentReg[] = { 1095958Sgblack@eecs.umich.edu INTREG_RDI, 1105958Sgblack@eecs.umich.edu INTREG_RSI, 1115958Sgblack@eecs.umich.edu INTREG_RDX, 1125958Sgblack@eecs.umich.edu //This argument register is r10 for syscalls and rcx for C. 1135958Sgblack@eecs.umich.edu INTREG_R10W, 1145958Sgblack@eecs.umich.edu //INTREG_RCX, 1155958Sgblack@eecs.umich.edu INTREG_R8W, 1165958Sgblack@eecs.umich.edu INTREG_R9W 1175958Sgblack@eecs.umich.edu}; 1185958Sgblack@eecs.umich.edustatic const int NumArgumentRegs = sizeof(ArgumentReg) / sizeof(const int); 1195959Sgblack@eecs.umich.edustatic const int ArgumentReg32[] = { 1205959Sgblack@eecs.umich.edu INTREG_EBX, 1215959Sgblack@eecs.umich.edu INTREG_ECX, 1225959Sgblack@eecs.umich.edu INTREG_EDX, 1235959Sgblack@eecs.umich.edu INTREG_ESI, 1245959Sgblack@eecs.umich.edu INTREG_EDI, 1255959Sgblack@eecs.umich.edu}; 1265959Sgblack@eecs.umich.edustatic const int NumArgumentRegs32 = sizeof(ArgumentReg) / sizeof(const int); 1274166Sgblack@eecs.umich.edu 1285956Sgblack@eecs.umich.eduX86LiveProcess::X86LiveProcess(LiveProcessParams * params, ObjectFile *objFile, 1295956Sgblack@eecs.umich.edu SyscallDesc *_syscallDescs, int _numSyscallDescs) : 1305956Sgblack@eecs.umich.edu LiveProcess(params, objFile), syscallDescs(_syscallDescs), 1315956Sgblack@eecs.umich.edu numSyscallDescs(_numSyscallDescs) 1324166Sgblack@eecs.umich.edu{ 1334166Sgblack@eecs.umich.edu brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 1344166Sgblack@eecs.umich.edu brk_point = roundUp(brk_point, VMPageSize); 1355956Sgblack@eecs.umich.edu} 1364166Sgblack@eecs.umich.edu 1375956Sgblack@eecs.umich.eduX86_64LiveProcess::X86_64LiveProcess(LiveProcessParams *params, 1385956Sgblack@eecs.umich.edu ObjectFile *objFile, SyscallDesc *_syscallDescs, 1395956Sgblack@eecs.umich.edu int _numSyscallDescs) : 1405956Sgblack@eecs.umich.edu X86LiveProcess(params, objFile, _syscallDescs, _numSyscallDescs) 1415956Sgblack@eecs.umich.edu{ 1424786Sgblack@eecs.umich.edu // Set up stack. On X86_64 Linux, stack goes from the top of memory 1434786Sgblack@eecs.umich.edu // downward, less the hole for the kernel address space plus one page 1444786Sgblack@eecs.umich.edu // for undertermined purposes. 1454793Sgblack@eecs.umich.edu stack_base = (Addr)0x7FFFFFFFF000ULL; 1464166Sgblack@eecs.umich.edu 1475956Sgblack@eecs.umich.edu // Set pointer for next thread stack. Reserve 8M for main stack. 1485956Sgblack@eecs.umich.edu next_thread_stack_base = stack_base - (8 * 1024 * 1024); 1495956Sgblack@eecs.umich.edu 1504820Sgblack@eecs.umich.edu // Set up region for mmaps. This was determined empirically and may not 1514820Sgblack@eecs.umich.edu // always be correct. 1525188Sgblack@eecs.umich.edu mmap_start = mmap_end = (Addr)0x2aaaaaaab000ULL; 1534166Sgblack@eecs.umich.edu} 1544166Sgblack@eecs.umich.edu 1555956Sgblack@eecs.umich.eduI386LiveProcess::I386LiveProcess(LiveProcessParams *params, 1565956Sgblack@eecs.umich.edu ObjectFile *objFile, SyscallDesc *_syscallDescs, 1575956Sgblack@eecs.umich.edu int _numSyscallDescs) : 1585956Sgblack@eecs.umich.edu X86LiveProcess(params, objFile, _syscallDescs, _numSyscallDescs) 1594166Sgblack@eecs.umich.edu{ 1605956Sgblack@eecs.umich.edu stack_base = (Addr)0xffffe000ULL; 1615956Sgblack@eecs.umich.edu 1625956Sgblack@eecs.umich.edu // Set pointer for next thread stack. Reserve 8M for main stack. 1635956Sgblack@eecs.umich.edu next_thread_stack_base = stack_base - (8 * 1024 * 1024); 1645956Sgblack@eecs.umich.edu 1655956Sgblack@eecs.umich.edu // Set up region for mmaps. This was determined empirically and may not 1665956Sgblack@eecs.umich.edu // always be correct. 1675956Sgblack@eecs.umich.edu mmap_start = mmap_end = (Addr)0xf7ffd000ULL; 1685956Sgblack@eecs.umich.edu} 1695956Sgblack@eecs.umich.edu 1705956Sgblack@eecs.umich.eduSyscallDesc* 1715956Sgblack@eecs.umich.eduX86LiveProcess::getDesc(int callnum) 1725956Sgblack@eecs.umich.edu{ 1735956Sgblack@eecs.umich.edu if (callnum < 0 || callnum >= numSyscallDescs) 1745956Sgblack@eecs.umich.edu return NULL; 1755956Sgblack@eecs.umich.edu return &syscallDescs[callnum]; 1764166Sgblack@eecs.umich.edu} 1774166Sgblack@eecs.umich.edu 1784166Sgblack@eecs.umich.eduvoid 1795956Sgblack@eecs.umich.eduX86_64LiveProcess::startup() 1804166Sgblack@eecs.umich.edu{ 1815956Sgblack@eecs.umich.edu LiveProcess::startup(); 1825956Sgblack@eecs.umich.edu 1835183Ssaidi@eecs.umich.edu if (checkpointRestored) 1845183Ssaidi@eecs.umich.edu return; 1855183Ssaidi@eecs.umich.edu 1865956Sgblack@eecs.umich.edu argsInit(sizeof(uint64_t), VMPageSize); 1875140Sgblack@eecs.umich.edu 1885713Shsul@eecs.umich.edu for (int i = 0; i < contextIds.size(); i++) { 1895713Shsul@eecs.umich.edu ThreadContext * tc = system->getThreadContext(contextIds[i]); 1905140Sgblack@eecs.umich.edu 1915140Sgblack@eecs.umich.edu SegAttr dataAttr = 0; 1925140Sgblack@eecs.umich.edu dataAttr.writable = 1; 1935140Sgblack@eecs.umich.edu dataAttr.readable = 1; 1945140Sgblack@eecs.umich.edu dataAttr.expandDown = 0; 1955140Sgblack@eecs.umich.edu dataAttr.dpl = 3; 1965140Sgblack@eecs.umich.edu dataAttr.defaultSize = 0; 1975140Sgblack@eecs.umich.edu dataAttr.longMode = 1; 1985140Sgblack@eecs.umich.edu 1995140Sgblack@eecs.umich.edu //Initialize the segment registers. 2005140Sgblack@eecs.umich.edu for(int seg = 0; seg < NUM_SEGMENTREGS; seg++) { 2015140Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_BASE(seg), 0); 2025289Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_EFF_BASE(seg), 0); 2035140Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_ATTR(seg), dataAttr); 2045140Sgblack@eecs.umich.edu } 2055140Sgblack@eecs.umich.edu 2065140Sgblack@eecs.umich.edu SegAttr csAttr = 0; 2075140Sgblack@eecs.umich.edu csAttr.writable = 0; 2085140Sgblack@eecs.umich.edu csAttr.readable = 1; 2095140Sgblack@eecs.umich.edu csAttr.expandDown = 0; 2105140Sgblack@eecs.umich.edu csAttr.dpl = 3; 2115140Sgblack@eecs.umich.edu csAttr.defaultSize = 0; 2125140Sgblack@eecs.umich.edu csAttr.longMode = 1; 2135140Sgblack@eecs.umich.edu 2145140Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_CS_ATTR, csAttr); 2155140Sgblack@eecs.umich.edu 2165140Sgblack@eecs.umich.edu //Set up the registers that describe the operating mode. 2175140Sgblack@eecs.umich.edu CR0 cr0 = 0; 2185140Sgblack@eecs.umich.edu cr0.pg = 1; // Turn on paging. 2195140Sgblack@eecs.umich.edu cr0.cd = 0; // Don't disable caching. 2205140Sgblack@eecs.umich.edu cr0.nw = 0; // This is bit is defined to be ignored. 2215140Sgblack@eecs.umich.edu cr0.am = 0; // No alignment checking 2225140Sgblack@eecs.umich.edu cr0.wp = 0; // Supervisor mode can write read only pages 2235140Sgblack@eecs.umich.edu cr0.ne = 1; 2245140Sgblack@eecs.umich.edu cr0.et = 1; // This should always be 1 2255140Sgblack@eecs.umich.edu cr0.ts = 0; // We don't do task switching, so causing fp exceptions 2265140Sgblack@eecs.umich.edu // would be pointless. 2275140Sgblack@eecs.umich.edu cr0.em = 0; // Allow x87 instructions to execute natively. 2285140Sgblack@eecs.umich.edu cr0.mp = 1; // This doesn't really matter, but the manual suggests 2295140Sgblack@eecs.umich.edu // setting it to one. 2305140Sgblack@eecs.umich.edu cr0.pe = 1; // We're definitely in protected mode. 2315140Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CR0, cr0); 2325140Sgblack@eecs.umich.edu 2335140Sgblack@eecs.umich.edu Efer efer = 0; 2345140Sgblack@eecs.umich.edu efer.sce = 1; // Enable system call extensions. 2355140Sgblack@eecs.umich.edu efer.lme = 1; // Enable long mode. 2365140Sgblack@eecs.umich.edu efer.lma = 1; // Activate long mode. 2375140Sgblack@eecs.umich.edu efer.nxe = 1; // Enable nx support. 2385140Sgblack@eecs.umich.edu efer.svme = 0; // Disable svm support for now. It isn't implemented. 2395140Sgblack@eecs.umich.edu efer.ffxsr = 1; // Turn on fast fxsave and fxrstor. 2405140Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_EFER, efer); 2415140Sgblack@eecs.umich.edu } 2424166Sgblack@eecs.umich.edu} 2434166Sgblack@eecs.umich.edu 2444166Sgblack@eecs.umich.eduvoid 2455956Sgblack@eecs.umich.eduI386LiveProcess::startup() 2464166Sgblack@eecs.umich.edu{ 2475956Sgblack@eecs.umich.edu LiveProcess::startup(); 2485956Sgblack@eecs.umich.edu 2495956Sgblack@eecs.umich.edu if (checkpointRestored) 2505956Sgblack@eecs.umich.edu return; 2515956Sgblack@eecs.umich.edu 2525956Sgblack@eecs.umich.edu argsInit(sizeof(uint32_t), VMPageSize); 2535956Sgblack@eecs.umich.edu 2545956Sgblack@eecs.umich.edu for (int i = 0; i < contextIds.size(); i++) { 2555956Sgblack@eecs.umich.edu ThreadContext * tc = system->getThreadContext(contextIds[i]); 2565956Sgblack@eecs.umich.edu 2575956Sgblack@eecs.umich.edu SegAttr dataAttr = 0; 2585956Sgblack@eecs.umich.edu dataAttr.writable = 1; 2595956Sgblack@eecs.umich.edu dataAttr.readable = 1; 2605956Sgblack@eecs.umich.edu dataAttr.expandDown = 0; 2615956Sgblack@eecs.umich.edu dataAttr.dpl = 3; 2625956Sgblack@eecs.umich.edu dataAttr.defaultSize = 1; 2635956Sgblack@eecs.umich.edu dataAttr.longMode = 0; 2645956Sgblack@eecs.umich.edu 2655956Sgblack@eecs.umich.edu //Initialize the segment registers. 2665956Sgblack@eecs.umich.edu for(int seg = 0; seg < NUM_SEGMENTREGS; seg++) { 2675956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_BASE(seg), 0); 2685956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_EFF_BASE(seg), 0); 2695956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_ATTR(seg), dataAttr); 2705956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_SEL(seg), 0xB); 2715959Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_LIMIT(seg), (uint32_t)(-1)); 2725956Sgblack@eecs.umich.edu } 2735956Sgblack@eecs.umich.edu 2745956Sgblack@eecs.umich.edu SegAttr csAttr = 0; 2755956Sgblack@eecs.umich.edu csAttr.writable = 0; 2765956Sgblack@eecs.umich.edu csAttr.readable = 1; 2775956Sgblack@eecs.umich.edu csAttr.expandDown = 0; 2785956Sgblack@eecs.umich.edu csAttr.dpl = 3; 2795956Sgblack@eecs.umich.edu csAttr.defaultSize = 1; 2805956Sgblack@eecs.umich.edu csAttr.longMode = 0; 2815956Sgblack@eecs.umich.edu 2825956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_CS_ATTR, csAttr); 2835956Sgblack@eecs.umich.edu 2845956Sgblack@eecs.umich.edu //Set up the registers that describe the operating mode. 2855956Sgblack@eecs.umich.edu CR0 cr0 = 0; 2865956Sgblack@eecs.umich.edu cr0.pg = 1; // Turn on paging. 2875956Sgblack@eecs.umich.edu cr0.cd = 0; // Don't disable caching. 2885956Sgblack@eecs.umich.edu cr0.nw = 0; // This is bit is defined to be ignored. 2895956Sgblack@eecs.umich.edu cr0.am = 0; // No alignment checking 2905956Sgblack@eecs.umich.edu cr0.wp = 0; // Supervisor mode can write read only pages 2915956Sgblack@eecs.umich.edu cr0.ne = 1; 2925956Sgblack@eecs.umich.edu cr0.et = 1; // This should always be 1 2935956Sgblack@eecs.umich.edu cr0.ts = 0; // We don't do task switching, so causing fp exceptions 2945956Sgblack@eecs.umich.edu // would be pointless. 2955956Sgblack@eecs.umich.edu cr0.em = 0; // Allow x87 instructions to execute natively. 2965956Sgblack@eecs.umich.edu cr0.mp = 1; // This doesn't really matter, but the manual suggests 2975956Sgblack@eecs.umich.edu // setting it to one. 2985956Sgblack@eecs.umich.edu cr0.pe = 1; // We're definitely in protected mode. 2995956Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CR0, cr0); 3005956Sgblack@eecs.umich.edu 3015956Sgblack@eecs.umich.edu Efer efer = 0; 3025956Sgblack@eecs.umich.edu efer.sce = 1; // Enable system call extensions. 3035956Sgblack@eecs.umich.edu efer.lme = 1; // Enable long mode. 3045956Sgblack@eecs.umich.edu efer.lma = 0; // Deactivate long mode. 3055956Sgblack@eecs.umich.edu efer.nxe = 1; // Enable nx support. 3065956Sgblack@eecs.umich.edu efer.svme = 0; // Disable svm support for now. It isn't implemented. 3075956Sgblack@eecs.umich.edu efer.ffxsr = 1; // Turn on fast fxsave and fxrstor. 3085956Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_EFER, efer); 3095956Sgblack@eecs.umich.edu } 3105956Sgblack@eecs.umich.edu} 3115956Sgblack@eecs.umich.edu 3125956Sgblack@eecs.umich.edutemplate<class IntType> 3135956Sgblack@eecs.umich.eduvoid 3145956Sgblack@eecs.umich.eduX86LiveProcess::argsInit(int pageSize) 3155956Sgblack@eecs.umich.edu{ 3165956Sgblack@eecs.umich.edu int intSize = sizeof(IntType); 3175956Sgblack@eecs.umich.edu 3185956Sgblack@eecs.umich.edu typedef AuxVector<IntType> auxv_t; 3195758Shsul@eecs.umich.edu std::vector<auxv_t> auxv; 3205758Shsul@eecs.umich.edu 3214166Sgblack@eecs.umich.edu string filename; 3224166Sgblack@eecs.umich.edu if(argv.size() < 1) 3234166Sgblack@eecs.umich.edu filename = ""; 3244166Sgblack@eecs.umich.edu else 3254166Sgblack@eecs.umich.edu filename = argv[0]; 3264166Sgblack@eecs.umich.edu 3274793Sgblack@eecs.umich.edu //We want 16 byte alignment 3284849Sgblack@eecs.umich.edu uint64_t align = 16; 3294166Sgblack@eecs.umich.edu 3304166Sgblack@eecs.umich.edu // load object file into target memory 3314166Sgblack@eecs.umich.edu objFile->loadSections(initVirtMem); 3324166Sgblack@eecs.umich.edu 3334793Sgblack@eecs.umich.edu enum X86CpuFeature { 3344793Sgblack@eecs.umich.edu X86_OnboardFPU = 1 << 0, 3354793Sgblack@eecs.umich.edu X86_VirtualModeExtensions = 1 << 1, 3364793Sgblack@eecs.umich.edu X86_DebuggingExtensions = 1 << 2, 3374793Sgblack@eecs.umich.edu X86_PageSizeExtensions = 1 << 3, 3384777Sgblack@eecs.umich.edu 3394793Sgblack@eecs.umich.edu X86_TimeStampCounter = 1 << 4, 3404793Sgblack@eecs.umich.edu X86_ModelSpecificRegisters = 1 << 5, 3414793Sgblack@eecs.umich.edu X86_PhysicalAddressExtensions = 1 << 6, 3424793Sgblack@eecs.umich.edu X86_MachineCheckExtensions = 1 << 7, 3434777Sgblack@eecs.umich.edu 3444793Sgblack@eecs.umich.edu X86_CMPXCHG8Instruction = 1 << 8, 3454793Sgblack@eecs.umich.edu X86_OnboardAPIC = 1 << 9, 3464793Sgblack@eecs.umich.edu X86_SYSENTER_SYSEXIT = 1 << 11, 3474793Sgblack@eecs.umich.edu 3484793Sgblack@eecs.umich.edu X86_MemoryTypeRangeRegisters = 1 << 12, 3494793Sgblack@eecs.umich.edu X86_PageGlobalEnable = 1 << 13, 3504793Sgblack@eecs.umich.edu X86_MachineCheckArchitecture = 1 << 14, 3514793Sgblack@eecs.umich.edu X86_CMOVInstruction = 1 << 15, 3524793Sgblack@eecs.umich.edu 3534793Sgblack@eecs.umich.edu X86_PageAttributeTable = 1 << 16, 3544793Sgblack@eecs.umich.edu X86_36BitPSEs = 1 << 17, 3554793Sgblack@eecs.umich.edu X86_ProcessorSerialNumber = 1 << 18, 3564793Sgblack@eecs.umich.edu X86_CLFLUSHInstruction = 1 << 19, 3574793Sgblack@eecs.umich.edu 3584793Sgblack@eecs.umich.edu X86_DebugTraceStore = 1 << 21, 3594793Sgblack@eecs.umich.edu X86_ACPIViaMSR = 1 << 22, 3604793Sgblack@eecs.umich.edu X86_MultimediaExtensions = 1 << 23, 3614793Sgblack@eecs.umich.edu 3624793Sgblack@eecs.umich.edu X86_FXSAVE_FXRSTOR = 1 << 24, 3634793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions = 1 << 25, 3644793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions2 = 1 << 26, 3654793Sgblack@eecs.umich.edu X86_CPUSelfSnoop = 1 << 27, 3664793Sgblack@eecs.umich.edu 3674793Sgblack@eecs.umich.edu X86_HyperThreading = 1 << 28, 3684793Sgblack@eecs.umich.edu X86_AutomaticClockControl = 1 << 29, 3694793Sgblack@eecs.umich.edu X86_IA64Processor = 1 << 30 3704166Sgblack@eecs.umich.edu }; 3714166Sgblack@eecs.umich.edu 3724166Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 3734166Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 3744166Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 3754166Sgblack@eecs.umich.edu if(elfObject) 3764166Sgblack@eecs.umich.edu { 3774793Sgblack@eecs.umich.edu uint64_t features = 3784793Sgblack@eecs.umich.edu X86_OnboardFPU | 3794793Sgblack@eecs.umich.edu X86_VirtualModeExtensions | 3804793Sgblack@eecs.umich.edu X86_DebuggingExtensions | 3814793Sgblack@eecs.umich.edu X86_PageSizeExtensions | 3824793Sgblack@eecs.umich.edu X86_TimeStampCounter | 3834793Sgblack@eecs.umich.edu X86_ModelSpecificRegisters | 3844793Sgblack@eecs.umich.edu X86_PhysicalAddressExtensions | 3854793Sgblack@eecs.umich.edu X86_MachineCheckExtensions | 3864793Sgblack@eecs.umich.edu X86_CMPXCHG8Instruction | 3874793Sgblack@eecs.umich.edu X86_OnboardAPIC | 3884793Sgblack@eecs.umich.edu X86_SYSENTER_SYSEXIT | 3894793Sgblack@eecs.umich.edu X86_MemoryTypeRangeRegisters | 3904793Sgblack@eecs.umich.edu X86_PageGlobalEnable | 3914793Sgblack@eecs.umich.edu X86_MachineCheckArchitecture | 3924793Sgblack@eecs.umich.edu X86_CMOVInstruction | 3934793Sgblack@eecs.umich.edu X86_PageAttributeTable | 3944793Sgblack@eecs.umich.edu X86_36BitPSEs | 3954793Sgblack@eecs.umich.edu// X86_ProcessorSerialNumber | 3964793Sgblack@eecs.umich.edu X86_CLFLUSHInstruction | 3974793Sgblack@eecs.umich.edu// X86_DebugTraceStore | 3984793Sgblack@eecs.umich.edu// X86_ACPIViaMSR | 3994793Sgblack@eecs.umich.edu X86_MultimediaExtensions | 4004793Sgblack@eecs.umich.edu X86_FXSAVE_FXRSTOR | 4014793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions | 4024793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions2 | 4034793Sgblack@eecs.umich.edu// X86_CPUSelfSnoop | 4044793Sgblack@eecs.umich.edu// X86_HyperThreading | 4054793Sgblack@eecs.umich.edu// X86_AutomaticClockControl | 4064793Sgblack@eecs.umich.edu// X86_IA64Processor | 4074793Sgblack@eecs.umich.edu 0; 4084793Sgblack@eecs.umich.edu 4094166Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 4104777Sgblack@eecs.umich.edu //XXX Figure out what these should be 4114793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_HWCAP, features)); 4124166Sgblack@eecs.umich.edu //The system page size 4134793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PAGESZ, X86ISA::VMPageSize)); 4144166Sgblack@eecs.umich.edu //Frequency at which times() increments 4154793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_CLKTCK, 100)); 4164166Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 4174166Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 4184793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable())); 4194166Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 4204793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize())); 4214166Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 4224793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount())); 4234777Sgblack@eecs.umich.edu //Defined to be 100 in the kernel source. 4244166Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 4254166Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 4264166Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 4274793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_BASE, 0)); 4284777Sgblack@eecs.umich.edu 4294777Sgblack@eecs.umich.edu //XXX Figure out what this should be. 4304793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_FLAGS, 0)); 4314166Sgblack@eecs.umich.edu //The entry point to the program 4324793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint())); 4334166Sgblack@eecs.umich.edu //Different user and group IDs 4344793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_UID, uid())); 4354793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EUID, euid())); 4364793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_GID, gid())); 4374793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EGID, egid())); 4384166Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 4394793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_SECURE, 0)); 4404777Sgblack@eecs.umich.edu //The string "x86_64" with unknown meaning 4414793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PLATFORM, 0)); 4424166Sgblack@eecs.umich.edu } 4434166Sgblack@eecs.umich.edu 4444166Sgblack@eecs.umich.edu //Figure out how big the initial stack needs to be 4454166Sgblack@eecs.umich.edu 4464849Sgblack@eecs.umich.edu // A sentry NULL void pointer at the top of the stack. 4474849Sgblack@eecs.umich.edu int sentry_size = intSize; 4484166Sgblack@eecs.umich.edu 4494166Sgblack@eecs.umich.edu //This is the name of the file which is present on the initial stack 4504166Sgblack@eecs.umich.edu //It's purpose is to let the user space linker examine the original file. 4514847Sgblack@eecs.umich.edu int file_name_size = filename.size() + 1; 4524793Sgblack@eecs.umich.edu 4534793Sgblack@eecs.umich.edu string platform = "x86_64"; 4544793Sgblack@eecs.umich.edu int aux_data_size = platform.size() + 1; 4554166Sgblack@eecs.umich.edu 4564166Sgblack@eecs.umich.edu int env_data_size = 0; 4574166Sgblack@eecs.umich.edu for (int i = 0; i < envp.size(); ++i) { 4584847Sgblack@eecs.umich.edu env_data_size += envp[i].size() + 1; 4594166Sgblack@eecs.umich.edu } 4604166Sgblack@eecs.umich.edu int arg_data_size = 0; 4614166Sgblack@eecs.umich.edu for (int i = 0; i < argv.size(); ++i) { 4624847Sgblack@eecs.umich.edu arg_data_size += argv[i].size() + 1; 4634166Sgblack@eecs.umich.edu } 4644166Sgblack@eecs.umich.edu 4654166Sgblack@eecs.umich.edu //The info_block needs to be padded so it's size is a multiple of the 4664166Sgblack@eecs.umich.edu //alignment mask. Also, it appears that there needs to be at least some 4674166Sgblack@eecs.umich.edu //padding, so if the size is already a multiple, we need to increase it 4684166Sgblack@eecs.umich.edu //anyway. 4694849Sgblack@eecs.umich.edu int base_info_block_size = 4704849Sgblack@eecs.umich.edu sentry_size + file_name_size + env_data_size + arg_data_size; 4714166Sgblack@eecs.umich.edu 4724849Sgblack@eecs.umich.edu int info_block_size = roundUp(base_info_block_size, align); 4734849Sgblack@eecs.umich.edu 4744849Sgblack@eecs.umich.edu int info_block_padding = info_block_size - base_info_block_size; 4754166Sgblack@eecs.umich.edu 4764166Sgblack@eecs.umich.edu //Each auxilliary vector is two 8 byte words 4774166Sgblack@eecs.umich.edu int aux_array_size = intSize * 2 * (auxv.size() + 1); 4784166Sgblack@eecs.umich.edu 4794166Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 4804166Sgblack@eecs.umich.edu int argv_array_size = intSize * (argv.size() + 1); 4814166Sgblack@eecs.umich.edu 4824166Sgblack@eecs.umich.edu int argc_size = intSize; 4834166Sgblack@eecs.umich.edu 4844849Sgblack@eecs.umich.edu //Figure out the size of the contents of the actual initial frame 4854849Sgblack@eecs.umich.edu int frame_size = 4864166Sgblack@eecs.umich.edu aux_array_size + 4874166Sgblack@eecs.umich.edu envp_array_size + 4884166Sgblack@eecs.umich.edu argv_array_size + 4894607Sgblack@eecs.umich.edu argc_size; 4904166Sgblack@eecs.umich.edu 4914849Sgblack@eecs.umich.edu //There needs to be padding after the auxiliary vector data so that the 4924849Sgblack@eecs.umich.edu //very bottom of the stack is aligned properly. 4934849Sgblack@eecs.umich.edu int partial_size = frame_size + aux_data_size; 4944849Sgblack@eecs.umich.edu int aligned_partial_size = roundUp(partial_size, align); 4954849Sgblack@eecs.umich.edu int aux_padding = aligned_partial_size - partial_size; 4964849Sgblack@eecs.umich.edu 4974849Sgblack@eecs.umich.edu int space_needed = 4984849Sgblack@eecs.umich.edu info_block_size + 4994849Sgblack@eecs.umich.edu aux_data_size + 5004849Sgblack@eecs.umich.edu aux_padding + 5014849Sgblack@eecs.umich.edu frame_size; 5024849Sgblack@eecs.umich.edu 5034166Sgblack@eecs.umich.edu stack_min = stack_base - space_needed; 5044849Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, align); 5054166Sgblack@eecs.umich.edu stack_size = stack_base - stack_min; 5064166Sgblack@eecs.umich.edu 5074166Sgblack@eecs.umich.edu // map memory 5084166Sgblack@eecs.umich.edu pTable->allocate(roundDown(stack_min, pageSize), 5094166Sgblack@eecs.umich.edu roundUp(stack_size, pageSize)); 5104166Sgblack@eecs.umich.edu 5114166Sgblack@eecs.umich.edu // map out initial stack contents 5125956Sgblack@eecs.umich.edu IntType sentry_base = stack_base - sentry_size; 5135956Sgblack@eecs.umich.edu IntType file_name_base = sentry_base - file_name_size; 5145956Sgblack@eecs.umich.edu IntType env_data_base = file_name_base - env_data_size; 5155956Sgblack@eecs.umich.edu IntType arg_data_base = env_data_base - arg_data_size; 5165956Sgblack@eecs.umich.edu IntType aux_data_base = arg_data_base - info_block_padding - aux_data_size; 5175956Sgblack@eecs.umich.edu IntType auxv_array_base = aux_data_base - aux_array_size - aux_padding; 5185956Sgblack@eecs.umich.edu IntType envp_array_base = auxv_array_base - envp_array_size; 5195956Sgblack@eecs.umich.edu IntType argv_array_base = envp_array_base - argv_array_size; 5205956Sgblack@eecs.umich.edu IntType argc_base = argv_array_base - argc_size; 5214166Sgblack@eecs.umich.edu 5225941Sgblack@eecs.umich.edu DPRINTF(Stack, "The addresses of items on the initial stack:\n"); 5235941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - file name\n", file_name_base); 5245941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - env data\n", env_data_base); 5255941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - arg data\n", arg_data_base); 5265941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - aux data\n", aux_data_base); 5275941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - auxv array\n", auxv_array_base); 5285941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - envp array\n", envp_array_base); 5295941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - argv array\n", argv_array_base); 5305941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - argc \n", argc_base); 5315941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - stack min\n", stack_min); 5324166Sgblack@eecs.umich.edu 5334166Sgblack@eecs.umich.edu // write contents to stack 5344166Sgblack@eecs.umich.edu 5354166Sgblack@eecs.umich.edu // figure out argc 5365956Sgblack@eecs.umich.edu IntType argc = argv.size(); 5375956Sgblack@eecs.umich.edu IntType guestArgc = X86ISA::htog(argc); 5384166Sgblack@eecs.umich.edu 5394849Sgblack@eecs.umich.edu //Write out the sentry void * 5405956Sgblack@eecs.umich.edu IntType sentry_NULL = 0; 5414849Sgblack@eecs.umich.edu initVirtMem->writeBlob(sentry_base, 5424849Sgblack@eecs.umich.edu (uint8_t*)&sentry_NULL, sentry_size); 5434166Sgblack@eecs.umich.edu 5444166Sgblack@eecs.umich.edu //Write the file name 5454166Sgblack@eecs.umich.edu initVirtMem->writeString(file_name_base, filename.c_str()); 5464166Sgblack@eecs.umich.edu 5474793Sgblack@eecs.umich.edu //Fix up the aux vector which points to the "platform" string 5484793Sgblack@eecs.umich.edu assert(auxv[auxv.size() - 1].a_type = M5_AT_PLATFORM); 5494793Sgblack@eecs.umich.edu auxv[auxv.size() - 1].a_val = aux_data_base; 5504793Sgblack@eecs.umich.edu 5514166Sgblack@eecs.umich.edu //Copy the aux stuff 5524166Sgblack@eecs.umich.edu for(int x = 0; x < auxv.size(); x++) 5534166Sgblack@eecs.umich.edu { 5544166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 5554166Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_type), intSize); 5564166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 5574166Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_val), intSize); 5584166Sgblack@eecs.umich.edu } 5594166Sgblack@eecs.umich.edu //Write out the terminating zeroed auxilliary vector 5604166Sgblack@eecs.umich.edu const uint64_t zero = 0; 5614166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 5624166Sgblack@eecs.umich.edu (uint8_t*)&zero, 2 * intSize); 5634166Sgblack@eecs.umich.edu 5644793Sgblack@eecs.umich.edu initVirtMem->writeString(aux_data_base, platform.c_str()); 5654793Sgblack@eecs.umich.edu 5664166Sgblack@eecs.umich.edu copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 5674166Sgblack@eecs.umich.edu copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 5684166Sgblack@eecs.umich.edu 5694166Sgblack@eecs.umich.edu initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 5704166Sgblack@eecs.umich.edu 5715713Shsul@eecs.umich.edu ThreadContext *tc = system->getThreadContext(contextIds[0]); 5724793Sgblack@eecs.umich.edu //Set the stack pointer register 5735713Shsul@eecs.umich.edu tc->setIntReg(StackPointerReg, stack_min); 5744166Sgblack@eecs.umich.edu 5754166Sgblack@eecs.umich.edu Addr prog_entry = objFile->entryPoint(); 5765246Sgblack@eecs.umich.edu // There doesn't need to be any segment base added in since we're dealing 5775246Sgblack@eecs.umich.edu // with the flat segmentation model. 5785713Shsul@eecs.umich.edu tc->setPC(prog_entry); 5795713Shsul@eecs.umich.edu tc->setNextPC(prog_entry + sizeof(MachInst)); 5804166Sgblack@eecs.umich.edu 5814166Sgblack@eecs.umich.edu //Align the "stack_min" to a page boundary. 5824166Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, pageSize); 5834166Sgblack@eecs.umich.edu 5844166Sgblack@eecs.umich.edu// num_processes++; 5854166Sgblack@eecs.umich.edu} 5865956Sgblack@eecs.umich.edu 5875956Sgblack@eecs.umich.eduvoid 5885956Sgblack@eecs.umich.eduX86_64LiveProcess::argsInit(int intSize, int pageSize) 5895956Sgblack@eecs.umich.edu{ 5905956Sgblack@eecs.umich.edu X86LiveProcess::argsInit<uint64_t>(pageSize); 5915956Sgblack@eecs.umich.edu} 5925956Sgblack@eecs.umich.edu 5935956Sgblack@eecs.umich.eduvoid 5945956Sgblack@eecs.umich.eduI386LiveProcess::argsInit(int intSize, int pageSize) 5955956Sgblack@eecs.umich.edu{ 5965956Sgblack@eecs.umich.edu X86LiveProcess::argsInit<uint32_t>(pageSize); 5975956Sgblack@eecs.umich.edu} 5985958Sgblack@eecs.umich.edu 5995958Sgblack@eecs.umich.eduvoid 6005958Sgblack@eecs.umich.eduX86LiveProcess::setSyscallReturn(ThreadContext *tc, SyscallReturn return_value) 6015958Sgblack@eecs.umich.edu{ 6025958Sgblack@eecs.umich.edu tc->setIntReg(INTREG_RAX, return_value.value()); 6035958Sgblack@eecs.umich.edu} 6045958Sgblack@eecs.umich.edu 6055958Sgblack@eecs.umich.eduX86ISA::IntReg 6065958Sgblack@eecs.umich.eduX86_64LiveProcess::getSyscallArg(ThreadContext *tc, int i) 6075958Sgblack@eecs.umich.edu{ 6085958Sgblack@eecs.umich.edu assert(i < NumArgumentRegs); 6095958Sgblack@eecs.umich.edu return tc->readIntReg(ArgumentReg[i]); 6105958Sgblack@eecs.umich.edu} 6115958Sgblack@eecs.umich.edu 6125958Sgblack@eecs.umich.eduvoid 6135958Sgblack@eecs.umich.eduX86_64LiveProcess::setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val) 6145958Sgblack@eecs.umich.edu{ 6155958Sgblack@eecs.umich.edu assert(i < NumArgumentRegs); 6165958Sgblack@eecs.umich.edu return tc->setIntReg(ArgumentReg[i], val); 6175958Sgblack@eecs.umich.edu} 6185958Sgblack@eecs.umich.edu 6195958Sgblack@eecs.umich.eduX86ISA::IntReg 6205958Sgblack@eecs.umich.eduI386LiveProcess::getSyscallArg(ThreadContext *tc, int i) 6215958Sgblack@eecs.umich.edu{ 6225959Sgblack@eecs.umich.edu assert(i < NumArgumentRegs32); 6235959Sgblack@eecs.umich.edu return tc->readIntReg(ArgumentReg32[i]); 6245958Sgblack@eecs.umich.edu} 6255958Sgblack@eecs.umich.edu 6265958Sgblack@eecs.umich.eduvoid 6275958Sgblack@eecs.umich.eduI386LiveProcess::setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val) 6285958Sgblack@eecs.umich.edu{ 6295959Sgblack@eecs.umich.edu assert(i < NumArgumentRegs); 6305959Sgblack@eecs.umich.edu return tc->setIntReg(ArgumentReg[i], val); 6315958Sgblack@eecs.umich.edu} 632