process.cc revision 6140
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 ArgumentReg[] = { 1085958Sgblack@eecs.umich.edu INTREG_RDI, 1095958Sgblack@eecs.umich.edu INTREG_RSI, 1105958Sgblack@eecs.umich.edu INTREG_RDX, 1115958Sgblack@eecs.umich.edu //This argument register is r10 for syscalls and rcx for C. 1125958Sgblack@eecs.umich.edu INTREG_R10W, 1135958Sgblack@eecs.umich.edu //INTREG_RCX, 1145958Sgblack@eecs.umich.edu INTREG_R8W, 1155958Sgblack@eecs.umich.edu INTREG_R9W 1165958Sgblack@eecs.umich.edu}; 1175958Sgblack@eecs.umich.edustatic const int NumArgumentRegs = sizeof(ArgumentReg) / sizeof(const int); 1185959Sgblack@eecs.umich.edustatic const int ArgumentReg32[] = { 1195959Sgblack@eecs.umich.edu INTREG_EBX, 1205959Sgblack@eecs.umich.edu INTREG_ECX, 1215959Sgblack@eecs.umich.edu INTREG_EDX, 1225959Sgblack@eecs.umich.edu INTREG_ESI, 1235959Sgblack@eecs.umich.edu INTREG_EDI, 1245959Sgblack@eecs.umich.edu}; 1255959Sgblack@eecs.umich.edustatic const int NumArgumentRegs32 = sizeof(ArgumentReg) / sizeof(const int); 1264166Sgblack@eecs.umich.edu 1275956Sgblack@eecs.umich.eduX86LiveProcess::X86LiveProcess(LiveProcessParams * params, ObjectFile *objFile, 1285956Sgblack@eecs.umich.edu SyscallDesc *_syscallDescs, int _numSyscallDescs) : 1295956Sgblack@eecs.umich.edu LiveProcess(params, objFile), syscallDescs(_syscallDescs), 1305956Sgblack@eecs.umich.edu numSyscallDescs(_numSyscallDescs) 1314166Sgblack@eecs.umich.edu{ 1324166Sgblack@eecs.umich.edu brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 1334166Sgblack@eecs.umich.edu brk_point = roundUp(brk_point, VMPageSize); 1345956Sgblack@eecs.umich.edu} 1354166Sgblack@eecs.umich.edu 1365956Sgblack@eecs.umich.eduX86_64LiveProcess::X86_64LiveProcess(LiveProcessParams *params, 1375956Sgblack@eecs.umich.edu ObjectFile *objFile, SyscallDesc *_syscallDescs, 1385956Sgblack@eecs.umich.edu int _numSyscallDescs) : 1395956Sgblack@eecs.umich.edu X86LiveProcess(params, objFile, _syscallDescs, _numSyscallDescs) 1405956Sgblack@eecs.umich.edu{ 1414786Sgblack@eecs.umich.edu // Set up stack. On X86_64 Linux, stack goes from the top of memory 1424786Sgblack@eecs.umich.edu // downward, less the hole for the kernel address space plus one page 1434786Sgblack@eecs.umich.edu // for undertermined purposes. 1444793Sgblack@eecs.umich.edu stack_base = (Addr)0x7FFFFFFFF000ULL; 1454166Sgblack@eecs.umich.edu 1465956Sgblack@eecs.umich.edu // Set pointer for next thread stack. Reserve 8M for main stack. 1475956Sgblack@eecs.umich.edu next_thread_stack_base = stack_base - (8 * 1024 * 1024); 1485956Sgblack@eecs.umich.edu 1494820Sgblack@eecs.umich.edu // Set up region for mmaps. This was determined empirically and may not 1504820Sgblack@eecs.umich.edu // always be correct. 1515188Sgblack@eecs.umich.edu mmap_start = mmap_end = (Addr)0x2aaaaaaab000ULL; 1524166Sgblack@eecs.umich.edu} 1534166Sgblack@eecs.umich.edu 1545973Sgblack@eecs.umich.eduvoid 1555973Sgblack@eecs.umich.eduI386LiveProcess::syscall(int64_t callnum, ThreadContext *tc) 1565973Sgblack@eecs.umich.edu{ 1575973Sgblack@eecs.umich.edu Addr eip = tc->readPC(); 1585973Sgblack@eecs.umich.edu if (eip >= vsyscallPage.base && 1595973Sgblack@eecs.umich.edu eip < vsyscallPage.base + vsyscallPage.size) { 1605973Sgblack@eecs.umich.edu tc->setNextPC(vsyscallPage.base + vsyscallPage.vsysexitOffset); 1615973Sgblack@eecs.umich.edu } 1625973Sgblack@eecs.umich.edu X86LiveProcess::syscall(callnum, tc); 1635973Sgblack@eecs.umich.edu} 1645973Sgblack@eecs.umich.edu 1655973Sgblack@eecs.umich.edu 1665956Sgblack@eecs.umich.eduI386LiveProcess::I386LiveProcess(LiveProcessParams *params, 1675956Sgblack@eecs.umich.edu ObjectFile *objFile, SyscallDesc *_syscallDescs, 1685956Sgblack@eecs.umich.edu int _numSyscallDescs) : 1695956Sgblack@eecs.umich.edu X86LiveProcess(params, objFile, _syscallDescs, _numSyscallDescs) 1704166Sgblack@eecs.umich.edu{ 1715973Sgblack@eecs.umich.edu _gdtStart = 0x100000000; 1725973Sgblack@eecs.umich.edu _gdtSize = VMPageSize; 1735973Sgblack@eecs.umich.edu 1745973Sgblack@eecs.umich.edu vsyscallPage.base = 0xffffe000ULL; 1755973Sgblack@eecs.umich.edu vsyscallPage.size = VMPageSize; 1765973Sgblack@eecs.umich.edu vsyscallPage.vsyscallOffset = 0x400; 1775973Sgblack@eecs.umich.edu vsyscallPage.vsysexitOffset = 0x410; 1785973Sgblack@eecs.umich.edu 1795973Sgblack@eecs.umich.edu stack_base = vsyscallPage.base; 1805956Sgblack@eecs.umich.edu 1815956Sgblack@eecs.umich.edu // Set pointer for next thread stack. Reserve 8M for main stack. 1825956Sgblack@eecs.umich.edu next_thread_stack_base = stack_base - (8 * 1024 * 1024); 1835956Sgblack@eecs.umich.edu 1845956Sgblack@eecs.umich.edu // Set up region for mmaps. This was determined empirically and may not 1855956Sgblack@eecs.umich.edu // always be correct. 1865956Sgblack@eecs.umich.edu mmap_start = mmap_end = (Addr)0xf7ffd000ULL; 1875956Sgblack@eecs.umich.edu} 1885956Sgblack@eecs.umich.edu 1895956Sgblack@eecs.umich.eduSyscallDesc* 1905956Sgblack@eecs.umich.eduX86LiveProcess::getDesc(int callnum) 1915956Sgblack@eecs.umich.edu{ 1925956Sgblack@eecs.umich.edu if (callnum < 0 || callnum >= numSyscallDescs) 1935956Sgblack@eecs.umich.edu return NULL; 1945956Sgblack@eecs.umich.edu return &syscallDescs[callnum]; 1954166Sgblack@eecs.umich.edu} 1964166Sgblack@eecs.umich.edu 1974166Sgblack@eecs.umich.eduvoid 1985956Sgblack@eecs.umich.eduX86_64LiveProcess::startup() 1994166Sgblack@eecs.umich.edu{ 2005956Sgblack@eecs.umich.edu LiveProcess::startup(); 2015956Sgblack@eecs.umich.edu 2025183Ssaidi@eecs.umich.edu if (checkpointRestored) 2035183Ssaidi@eecs.umich.edu return; 2045183Ssaidi@eecs.umich.edu 2055956Sgblack@eecs.umich.edu argsInit(sizeof(uint64_t), VMPageSize); 2065140Sgblack@eecs.umich.edu 2075713Shsul@eecs.umich.edu for (int i = 0; i < contextIds.size(); i++) { 2085713Shsul@eecs.umich.edu ThreadContext * tc = system->getThreadContext(contextIds[i]); 2095140Sgblack@eecs.umich.edu 2105140Sgblack@eecs.umich.edu SegAttr dataAttr = 0; 2115140Sgblack@eecs.umich.edu dataAttr.writable = 1; 2125140Sgblack@eecs.umich.edu dataAttr.readable = 1; 2135140Sgblack@eecs.umich.edu dataAttr.expandDown = 0; 2145140Sgblack@eecs.umich.edu dataAttr.dpl = 3; 2155140Sgblack@eecs.umich.edu dataAttr.defaultSize = 0; 2165140Sgblack@eecs.umich.edu dataAttr.longMode = 1; 2175140Sgblack@eecs.umich.edu 2185140Sgblack@eecs.umich.edu //Initialize the segment registers. 2195140Sgblack@eecs.umich.edu for(int seg = 0; seg < NUM_SEGMENTREGS; seg++) { 2205140Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_BASE(seg), 0); 2215289Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_EFF_BASE(seg), 0); 2225140Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_ATTR(seg), dataAttr); 2235140Sgblack@eecs.umich.edu } 2245140Sgblack@eecs.umich.edu 2255140Sgblack@eecs.umich.edu SegAttr csAttr = 0; 2265140Sgblack@eecs.umich.edu csAttr.writable = 0; 2275140Sgblack@eecs.umich.edu csAttr.readable = 1; 2285140Sgblack@eecs.umich.edu csAttr.expandDown = 0; 2295140Sgblack@eecs.umich.edu csAttr.dpl = 3; 2305140Sgblack@eecs.umich.edu csAttr.defaultSize = 0; 2315140Sgblack@eecs.umich.edu csAttr.longMode = 1; 2325140Sgblack@eecs.umich.edu 2335140Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_CS_ATTR, csAttr); 2345140Sgblack@eecs.umich.edu 2356140Sgblack@eecs.umich.edu Efer efer = 0; 2366140Sgblack@eecs.umich.edu efer.sce = 1; // Enable system call extensions. 2376140Sgblack@eecs.umich.edu efer.lme = 1; // Enable long mode. 2386140Sgblack@eecs.umich.edu efer.lma = 1; // Activate long mode. 2396140Sgblack@eecs.umich.edu efer.nxe = 1; // Enable nx support. 2406140Sgblack@eecs.umich.edu efer.svme = 0; // Disable svm support for now. It isn't implemented. 2416140Sgblack@eecs.umich.edu efer.ffxsr = 1; // Turn on fast fxsave and fxrstor. 2426140Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_EFER, efer); 2436140Sgblack@eecs.umich.edu 2445140Sgblack@eecs.umich.edu //Set up the registers that describe the operating mode. 2455140Sgblack@eecs.umich.edu CR0 cr0 = 0; 2465140Sgblack@eecs.umich.edu cr0.pg = 1; // Turn on paging. 2475140Sgblack@eecs.umich.edu cr0.cd = 0; // Don't disable caching. 2485140Sgblack@eecs.umich.edu cr0.nw = 0; // This is bit is defined to be ignored. 2495140Sgblack@eecs.umich.edu cr0.am = 0; // No alignment checking 2505140Sgblack@eecs.umich.edu cr0.wp = 0; // Supervisor mode can write read only pages 2515140Sgblack@eecs.umich.edu cr0.ne = 1; 2525140Sgblack@eecs.umich.edu cr0.et = 1; // This should always be 1 2535140Sgblack@eecs.umich.edu cr0.ts = 0; // We don't do task switching, so causing fp exceptions 2545140Sgblack@eecs.umich.edu // would be pointless. 2555140Sgblack@eecs.umich.edu cr0.em = 0; // Allow x87 instructions to execute natively. 2565140Sgblack@eecs.umich.edu cr0.mp = 1; // This doesn't really matter, but the manual suggests 2575140Sgblack@eecs.umich.edu // setting it to one. 2585140Sgblack@eecs.umich.edu cr0.pe = 1; // We're definitely in protected mode. 2595140Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CR0, cr0); 2605140Sgblack@eecs.umich.edu } 2614166Sgblack@eecs.umich.edu} 2624166Sgblack@eecs.umich.edu 2634166Sgblack@eecs.umich.eduvoid 2645956Sgblack@eecs.umich.eduI386LiveProcess::startup() 2654166Sgblack@eecs.umich.edu{ 2665956Sgblack@eecs.umich.edu LiveProcess::startup(); 2675956Sgblack@eecs.umich.edu 2685956Sgblack@eecs.umich.edu if (checkpointRestored) 2695956Sgblack@eecs.umich.edu return; 2705956Sgblack@eecs.umich.edu 2715956Sgblack@eecs.umich.edu argsInit(sizeof(uint32_t), VMPageSize); 2725956Sgblack@eecs.umich.edu 2735962Sgblack@eecs.umich.edu /* 2745962Sgblack@eecs.umich.edu * Set up a GDT for this process. The whole GDT wouldn't really be for 2755962Sgblack@eecs.umich.edu * this process, but the only parts we care about are. 2765962Sgblack@eecs.umich.edu */ 2775962Sgblack@eecs.umich.edu pTable->allocate(_gdtStart, _gdtSize); 2785962Sgblack@eecs.umich.edu uint64_t zero = 0; 2795962Sgblack@eecs.umich.edu assert(_gdtSize % sizeof(zero) == 0); 2805962Sgblack@eecs.umich.edu for (Addr gdtCurrent = _gdtStart; 2815962Sgblack@eecs.umich.edu gdtCurrent < _gdtStart + _gdtSize; gdtCurrent += sizeof(zero)) { 2825962Sgblack@eecs.umich.edu initVirtMem->write(gdtCurrent, zero); 2835962Sgblack@eecs.umich.edu } 2845962Sgblack@eecs.umich.edu 2855973Sgblack@eecs.umich.edu // Set up the vsyscall page for this process. 2865973Sgblack@eecs.umich.edu pTable->allocate(vsyscallPage.base, vsyscallPage.size); 2875973Sgblack@eecs.umich.edu uint8_t vsyscallBlob[] = { 2885973Sgblack@eecs.umich.edu 0x51, // push %ecx 2895973Sgblack@eecs.umich.edu 0x52, // push %edp 2905973Sgblack@eecs.umich.edu 0x55, // push %ebp 2915973Sgblack@eecs.umich.edu 0x89, 0xe5, // mov %esp, %ebp 2925973Sgblack@eecs.umich.edu 0x0f, 0x34 // sysenter 2935973Sgblack@eecs.umich.edu }; 2945973Sgblack@eecs.umich.edu initVirtMem->writeBlob(vsyscallPage.base + vsyscallPage.vsyscallOffset, 2955973Sgblack@eecs.umich.edu vsyscallBlob, sizeof(vsyscallBlob)); 2965973Sgblack@eecs.umich.edu 2975973Sgblack@eecs.umich.edu uint8_t vsysexitBlob[] = { 2985973Sgblack@eecs.umich.edu 0x5d, // pop %ebp 2995973Sgblack@eecs.umich.edu 0x5a, // pop %edx 3005973Sgblack@eecs.umich.edu 0x59, // pop %ecx 3015973Sgblack@eecs.umich.edu 0xc3 // ret 3025973Sgblack@eecs.umich.edu }; 3035973Sgblack@eecs.umich.edu initVirtMem->writeBlob(vsyscallPage.base + vsyscallPage.vsysexitOffset, 3045973Sgblack@eecs.umich.edu vsysexitBlob, sizeof(vsysexitBlob)); 3055973Sgblack@eecs.umich.edu 3065956Sgblack@eecs.umich.edu for (int i = 0; i < contextIds.size(); i++) { 3075956Sgblack@eecs.umich.edu ThreadContext * tc = system->getThreadContext(contextIds[i]); 3085956Sgblack@eecs.umich.edu 3095956Sgblack@eecs.umich.edu SegAttr dataAttr = 0; 3105956Sgblack@eecs.umich.edu dataAttr.writable = 1; 3115956Sgblack@eecs.umich.edu dataAttr.readable = 1; 3125956Sgblack@eecs.umich.edu dataAttr.expandDown = 0; 3135956Sgblack@eecs.umich.edu dataAttr.dpl = 3; 3145956Sgblack@eecs.umich.edu dataAttr.defaultSize = 1; 3155956Sgblack@eecs.umich.edu dataAttr.longMode = 0; 3165956Sgblack@eecs.umich.edu 3175956Sgblack@eecs.umich.edu //Initialize the segment registers. 3185956Sgblack@eecs.umich.edu for(int seg = 0; seg < NUM_SEGMENTREGS; seg++) { 3195956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_BASE(seg), 0); 3205956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_EFF_BASE(seg), 0); 3215956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_ATTR(seg), dataAttr); 3225956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_SEL(seg), 0xB); 3235959Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_SEG_LIMIT(seg), (uint32_t)(-1)); 3245956Sgblack@eecs.umich.edu } 3255956Sgblack@eecs.umich.edu 3265956Sgblack@eecs.umich.edu SegAttr csAttr = 0; 3275956Sgblack@eecs.umich.edu csAttr.writable = 0; 3285956Sgblack@eecs.umich.edu csAttr.readable = 1; 3295956Sgblack@eecs.umich.edu csAttr.expandDown = 0; 3305956Sgblack@eecs.umich.edu csAttr.dpl = 3; 3315956Sgblack@eecs.umich.edu csAttr.defaultSize = 1; 3325956Sgblack@eecs.umich.edu csAttr.longMode = 0; 3335956Sgblack@eecs.umich.edu 3345956Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_CS_ATTR, csAttr); 3355956Sgblack@eecs.umich.edu 3365962Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_TSG_BASE, _gdtStart); 3375962Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_TSG_EFF_BASE, _gdtStart); 3385962Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_TSG_LIMIT, _gdtStart + _gdtSize - 1); 3395962Sgblack@eecs.umich.edu 3405963Sgblack@eecs.umich.edu // Set the LDT selector to 0 to deactivate it. 3415963Sgblack@eecs.umich.edu tc->setMiscRegNoEffect(MISCREG_TSL, 0); 3425963Sgblack@eecs.umich.edu 3436140Sgblack@eecs.umich.edu Efer efer = 0; 3446140Sgblack@eecs.umich.edu efer.sce = 1; // Enable system call extensions. 3456140Sgblack@eecs.umich.edu efer.lme = 1; // Enable long mode. 3466140Sgblack@eecs.umich.edu efer.lma = 0; // Deactivate long mode. 3476140Sgblack@eecs.umich.edu efer.nxe = 1; // Enable nx support. 3486140Sgblack@eecs.umich.edu efer.svme = 0; // Disable svm support for now. It isn't implemented. 3496140Sgblack@eecs.umich.edu efer.ffxsr = 1; // Turn on fast fxsave and fxrstor. 3506140Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_EFER, efer); 3516140Sgblack@eecs.umich.edu 3525956Sgblack@eecs.umich.edu //Set up the registers that describe the operating mode. 3535956Sgblack@eecs.umich.edu CR0 cr0 = 0; 3545956Sgblack@eecs.umich.edu cr0.pg = 1; // Turn on paging. 3555956Sgblack@eecs.umich.edu cr0.cd = 0; // Don't disable caching. 3565956Sgblack@eecs.umich.edu cr0.nw = 0; // This is bit is defined to be ignored. 3575956Sgblack@eecs.umich.edu cr0.am = 0; // No alignment checking 3585956Sgblack@eecs.umich.edu cr0.wp = 0; // Supervisor mode can write read only pages 3595956Sgblack@eecs.umich.edu cr0.ne = 1; 3605956Sgblack@eecs.umich.edu cr0.et = 1; // This should always be 1 3615956Sgblack@eecs.umich.edu cr0.ts = 0; // We don't do task switching, so causing fp exceptions 3625956Sgblack@eecs.umich.edu // would be pointless. 3635956Sgblack@eecs.umich.edu cr0.em = 0; // Allow x87 instructions to execute natively. 3645956Sgblack@eecs.umich.edu cr0.mp = 1; // This doesn't really matter, but the manual suggests 3655956Sgblack@eecs.umich.edu // setting it to one. 3665956Sgblack@eecs.umich.edu cr0.pe = 1; // We're definitely in protected mode. 3675956Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CR0, cr0); 3685956Sgblack@eecs.umich.edu } 3695956Sgblack@eecs.umich.edu} 3705956Sgblack@eecs.umich.edu 3715956Sgblack@eecs.umich.edutemplate<class IntType> 3725956Sgblack@eecs.umich.eduvoid 3735973Sgblack@eecs.umich.eduX86LiveProcess::argsInit(int pageSize, 3745973Sgblack@eecs.umich.edu std::vector<AuxVector<IntType> > extraAuxvs) 3755956Sgblack@eecs.umich.edu{ 3765956Sgblack@eecs.umich.edu int intSize = sizeof(IntType); 3775956Sgblack@eecs.umich.edu 3785956Sgblack@eecs.umich.edu typedef AuxVector<IntType> auxv_t; 3795973Sgblack@eecs.umich.edu std::vector<auxv_t> auxv = extraAuxvs; 3805758Shsul@eecs.umich.edu 3814166Sgblack@eecs.umich.edu string filename; 3824166Sgblack@eecs.umich.edu if(argv.size() < 1) 3834166Sgblack@eecs.umich.edu filename = ""; 3844166Sgblack@eecs.umich.edu else 3854166Sgblack@eecs.umich.edu filename = argv[0]; 3864166Sgblack@eecs.umich.edu 3874793Sgblack@eecs.umich.edu //We want 16 byte alignment 3884849Sgblack@eecs.umich.edu uint64_t align = 16; 3894166Sgblack@eecs.umich.edu 3904166Sgblack@eecs.umich.edu // load object file into target memory 3914166Sgblack@eecs.umich.edu objFile->loadSections(initVirtMem); 3924166Sgblack@eecs.umich.edu 3934793Sgblack@eecs.umich.edu enum X86CpuFeature { 3944793Sgblack@eecs.umich.edu X86_OnboardFPU = 1 << 0, 3954793Sgblack@eecs.umich.edu X86_VirtualModeExtensions = 1 << 1, 3964793Sgblack@eecs.umich.edu X86_DebuggingExtensions = 1 << 2, 3974793Sgblack@eecs.umich.edu X86_PageSizeExtensions = 1 << 3, 3984777Sgblack@eecs.umich.edu 3994793Sgblack@eecs.umich.edu X86_TimeStampCounter = 1 << 4, 4004793Sgblack@eecs.umich.edu X86_ModelSpecificRegisters = 1 << 5, 4014793Sgblack@eecs.umich.edu X86_PhysicalAddressExtensions = 1 << 6, 4024793Sgblack@eecs.umich.edu X86_MachineCheckExtensions = 1 << 7, 4034777Sgblack@eecs.umich.edu 4044793Sgblack@eecs.umich.edu X86_CMPXCHG8Instruction = 1 << 8, 4054793Sgblack@eecs.umich.edu X86_OnboardAPIC = 1 << 9, 4064793Sgblack@eecs.umich.edu X86_SYSENTER_SYSEXIT = 1 << 11, 4074793Sgblack@eecs.umich.edu 4084793Sgblack@eecs.umich.edu X86_MemoryTypeRangeRegisters = 1 << 12, 4094793Sgblack@eecs.umich.edu X86_PageGlobalEnable = 1 << 13, 4104793Sgblack@eecs.umich.edu X86_MachineCheckArchitecture = 1 << 14, 4114793Sgblack@eecs.umich.edu X86_CMOVInstruction = 1 << 15, 4124793Sgblack@eecs.umich.edu 4134793Sgblack@eecs.umich.edu X86_PageAttributeTable = 1 << 16, 4144793Sgblack@eecs.umich.edu X86_36BitPSEs = 1 << 17, 4154793Sgblack@eecs.umich.edu X86_ProcessorSerialNumber = 1 << 18, 4164793Sgblack@eecs.umich.edu X86_CLFLUSHInstruction = 1 << 19, 4174793Sgblack@eecs.umich.edu 4184793Sgblack@eecs.umich.edu X86_DebugTraceStore = 1 << 21, 4194793Sgblack@eecs.umich.edu X86_ACPIViaMSR = 1 << 22, 4204793Sgblack@eecs.umich.edu X86_MultimediaExtensions = 1 << 23, 4214793Sgblack@eecs.umich.edu 4224793Sgblack@eecs.umich.edu X86_FXSAVE_FXRSTOR = 1 << 24, 4234793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions = 1 << 25, 4244793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions2 = 1 << 26, 4254793Sgblack@eecs.umich.edu X86_CPUSelfSnoop = 1 << 27, 4264793Sgblack@eecs.umich.edu 4274793Sgblack@eecs.umich.edu X86_HyperThreading = 1 << 28, 4284793Sgblack@eecs.umich.edu X86_AutomaticClockControl = 1 << 29, 4294793Sgblack@eecs.umich.edu X86_IA64Processor = 1 << 30 4304166Sgblack@eecs.umich.edu }; 4314166Sgblack@eecs.umich.edu 4324166Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 4334166Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 4344166Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 4354166Sgblack@eecs.umich.edu if(elfObject) 4364166Sgblack@eecs.umich.edu { 4374793Sgblack@eecs.umich.edu uint64_t features = 4384793Sgblack@eecs.umich.edu X86_OnboardFPU | 4394793Sgblack@eecs.umich.edu X86_VirtualModeExtensions | 4404793Sgblack@eecs.umich.edu X86_DebuggingExtensions | 4414793Sgblack@eecs.umich.edu X86_PageSizeExtensions | 4424793Sgblack@eecs.umich.edu X86_TimeStampCounter | 4434793Sgblack@eecs.umich.edu X86_ModelSpecificRegisters | 4444793Sgblack@eecs.umich.edu X86_PhysicalAddressExtensions | 4454793Sgblack@eecs.umich.edu X86_MachineCheckExtensions | 4464793Sgblack@eecs.umich.edu X86_CMPXCHG8Instruction | 4474793Sgblack@eecs.umich.edu X86_OnboardAPIC | 4484793Sgblack@eecs.umich.edu X86_SYSENTER_SYSEXIT | 4494793Sgblack@eecs.umich.edu X86_MemoryTypeRangeRegisters | 4504793Sgblack@eecs.umich.edu X86_PageGlobalEnable | 4514793Sgblack@eecs.umich.edu X86_MachineCheckArchitecture | 4524793Sgblack@eecs.umich.edu X86_CMOVInstruction | 4534793Sgblack@eecs.umich.edu X86_PageAttributeTable | 4544793Sgblack@eecs.umich.edu X86_36BitPSEs | 4554793Sgblack@eecs.umich.edu// X86_ProcessorSerialNumber | 4564793Sgblack@eecs.umich.edu X86_CLFLUSHInstruction | 4574793Sgblack@eecs.umich.edu// X86_DebugTraceStore | 4584793Sgblack@eecs.umich.edu// X86_ACPIViaMSR | 4594793Sgblack@eecs.umich.edu X86_MultimediaExtensions | 4604793Sgblack@eecs.umich.edu X86_FXSAVE_FXRSTOR | 4614793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions | 4624793Sgblack@eecs.umich.edu X86_StreamingSIMDExtensions2 | 4634793Sgblack@eecs.umich.edu// X86_CPUSelfSnoop | 4644793Sgblack@eecs.umich.edu// X86_HyperThreading | 4654793Sgblack@eecs.umich.edu// X86_AutomaticClockControl | 4664793Sgblack@eecs.umich.edu// X86_IA64Processor | 4674793Sgblack@eecs.umich.edu 0; 4684793Sgblack@eecs.umich.edu 4694166Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 4704777Sgblack@eecs.umich.edu //XXX Figure out what these should be 4714793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_HWCAP, features)); 4724166Sgblack@eecs.umich.edu //The system page size 4734793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PAGESZ, X86ISA::VMPageSize)); 4744166Sgblack@eecs.umich.edu //Frequency at which times() increments 4754793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_CLKTCK, 100)); 4764166Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 4774166Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 4784793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable())); 4794166Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 4804793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize())); 4814166Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 4824793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount())); 4834777Sgblack@eecs.umich.edu //Defined to be 100 in the kernel source. 4844166Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 4854166Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 4864166Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 4874793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_BASE, 0)); 4884777Sgblack@eecs.umich.edu 4894777Sgblack@eecs.umich.edu //XXX Figure out what this should be. 4904793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_FLAGS, 0)); 4914166Sgblack@eecs.umich.edu //The entry point to the program 4924793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint())); 4934166Sgblack@eecs.umich.edu //Different user and group IDs 4944793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_UID, uid())); 4954793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EUID, euid())); 4964793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_GID, gid())); 4974793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EGID, egid())); 4984166Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 4994793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_SECURE, 0)); 5004777Sgblack@eecs.umich.edu //The string "x86_64" with unknown meaning 5014793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PLATFORM, 0)); 5024166Sgblack@eecs.umich.edu } 5034166Sgblack@eecs.umich.edu 5044166Sgblack@eecs.umich.edu //Figure out how big the initial stack needs to be 5054166Sgblack@eecs.umich.edu 5064849Sgblack@eecs.umich.edu // A sentry NULL void pointer at the top of the stack. 5074849Sgblack@eecs.umich.edu int sentry_size = intSize; 5084166Sgblack@eecs.umich.edu 5094166Sgblack@eecs.umich.edu //This is the name of the file which is present on the initial stack 5104166Sgblack@eecs.umich.edu //It's purpose is to let the user space linker examine the original file. 5114847Sgblack@eecs.umich.edu int file_name_size = filename.size() + 1; 5124793Sgblack@eecs.umich.edu 5134793Sgblack@eecs.umich.edu string platform = "x86_64"; 5144793Sgblack@eecs.umich.edu int aux_data_size = platform.size() + 1; 5154166Sgblack@eecs.umich.edu 5164166Sgblack@eecs.umich.edu int env_data_size = 0; 5174166Sgblack@eecs.umich.edu for (int i = 0; i < envp.size(); ++i) { 5184847Sgblack@eecs.umich.edu env_data_size += envp[i].size() + 1; 5194166Sgblack@eecs.umich.edu } 5204166Sgblack@eecs.umich.edu int arg_data_size = 0; 5214166Sgblack@eecs.umich.edu for (int i = 0; i < argv.size(); ++i) { 5224847Sgblack@eecs.umich.edu arg_data_size += argv[i].size() + 1; 5234166Sgblack@eecs.umich.edu } 5244166Sgblack@eecs.umich.edu 5254166Sgblack@eecs.umich.edu //The info_block needs to be padded so it's size is a multiple of the 5264166Sgblack@eecs.umich.edu //alignment mask. Also, it appears that there needs to be at least some 5274166Sgblack@eecs.umich.edu //padding, so if the size is already a multiple, we need to increase it 5284166Sgblack@eecs.umich.edu //anyway. 5294849Sgblack@eecs.umich.edu int base_info_block_size = 5304849Sgblack@eecs.umich.edu sentry_size + file_name_size + env_data_size + arg_data_size; 5314166Sgblack@eecs.umich.edu 5324849Sgblack@eecs.umich.edu int info_block_size = roundUp(base_info_block_size, align); 5334849Sgblack@eecs.umich.edu 5344849Sgblack@eecs.umich.edu int info_block_padding = info_block_size - base_info_block_size; 5354166Sgblack@eecs.umich.edu 5364166Sgblack@eecs.umich.edu //Each auxilliary vector is two 8 byte words 5374166Sgblack@eecs.umich.edu int aux_array_size = intSize * 2 * (auxv.size() + 1); 5384166Sgblack@eecs.umich.edu 5394166Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 5404166Sgblack@eecs.umich.edu int argv_array_size = intSize * (argv.size() + 1); 5414166Sgblack@eecs.umich.edu 5424166Sgblack@eecs.umich.edu int argc_size = intSize; 5434166Sgblack@eecs.umich.edu 5444849Sgblack@eecs.umich.edu //Figure out the size of the contents of the actual initial frame 5454849Sgblack@eecs.umich.edu int frame_size = 5464166Sgblack@eecs.umich.edu aux_array_size + 5474166Sgblack@eecs.umich.edu envp_array_size + 5484166Sgblack@eecs.umich.edu argv_array_size + 5494607Sgblack@eecs.umich.edu argc_size; 5504166Sgblack@eecs.umich.edu 5514849Sgblack@eecs.umich.edu //There needs to be padding after the auxiliary vector data so that the 5524849Sgblack@eecs.umich.edu //very bottom of the stack is aligned properly. 5534849Sgblack@eecs.umich.edu int partial_size = frame_size + aux_data_size; 5544849Sgblack@eecs.umich.edu int aligned_partial_size = roundUp(partial_size, align); 5554849Sgblack@eecs.umich.edu int aux_padding = aligned_partial_size - partial_size; 5564849Sgblack@eecs.umich.edu 5574849Sgblack@eecs.umich.edu int space_needed = 5584849Sgblack@eecs.umich.edu info_block_size + 5594849Sgblack@eecs.umich.edu aux_data_size + 5604849Sgblack@eecs.umich.edu aux_padding + 5614849Sgblack@eecs.umich.edu frame_size; 5624849Sgblack@eecs.umich.edu 5634166Sgblack@eecs.umich.edu stack_min = stack_base - space_needed; 5644849Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, align); 5654166Sgblack@eecs.umich.edu stack_size = stack_base - stack_min; 5664166Sgblack@eecs.umich.edu 5674166Sgblack@eecs.umich.edu // map memory 5684166Sgblack@eecs.umich.edu pTable->allocate(roundDown(stack_min, pageSize), 5694166Sgblack@eecs.umich.edu roundUp(stack_size, pageSize)); 5704166Sgblack@eecs.umich.edu 5714166Sgblack@eecs.umich.edu // map out initial stack contents 5725956Sgblack@eecs.umich.edu IntType sentry_base = stack_base - sentry_size; 5735956Sgblack@eecs.umich.edu IntType file_name_base = sentry_base - file_name_size; 5745956Sgblack@eecs.umich.edu IntType env_data_base = file_name_base - env_data_size; 5755956Sgblack@eecs.umich.edu IntType arg_data_base = env_data_base - arg_data_size; 5765956Sgblack@eecs.umich.edu IntType aux_data_base = arg_data_base - info_block_padding - aux_data_size; 5775956Sgblack@eecs.umich.edu IntType auxv_array_base = aux_data_base - aux_array_size - aux_padding; 5785956Sgblack@eecs.umich.edu IntType envp_array_base = auxv_array_base - envp_array_size; 5795956Sgblack@eecs.umich.edu IntType argv_array_base = envp_array_base - argv_array_size; 5805956Sgblack@eecs.umich.edu IntType argc_base = argv_array_base - argc_size; 5814166Sgblack@eecs.umich.edu 5825941Sgblack@eecs.umich.edu DPRINTF(Stack, "The addresses of items on the initial stack:\n"); 5835941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - file name\n", file_name_base); 5845941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - env data\n", env_data_base); 5855941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - arg data\n", arg_data_base); 5865941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - aux data\n", aux_data_base); 5875941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - auxv array\n", auxv_array_base); 5885941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - envp array\n", envp_array_base); 5895941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - argv array\n", argv_array_base); 5905941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - argc \n", argc_base); 5915941Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - stack min\n", stack_min); 5924166Sgblack@eecs.umich.edu 5934166Sgblack@eecs.umich.edu // write contents to stack 5944166Sgblack@eecs.umich.edu 5954166Sgblack@eecs.umich.edu // figure out argc 5965956Sgblack@eecs.umich.edu IntType argc = argv.size(); 5975956Sgblack@eecs.umich.edu IntType guestArgc = X86ISA::htog(argc); 5984166Sgblack@eecs.umich.edu 5994849Sgblack@eecs.umich.edu //Write out the sentry void * 6005956Sgblack@eecs.umich.edu IntType sentry_NULL = 0; 6014849Sgblack@eecs.umich.edu initVirtMem->writeBlob(sentry_base, 6024849Sgblack@eecs.umich.edu (uint8_t*)&sentry_NULL, sentry_size); 6034166Sgblack@eecs.umich.edu 6044166Sgblack@eecs.umich.edu //Write the file name 6054166Sgblack@eecs.umich.edu initVirtMem->writeString(file_name_base, filename.c_str()); 6064166Sgblack@eecs.umich.edu 6074793Sgblack@eecs.umich.edu //Fix up the aux vector which points to the "platform" string 6084793Sgblack@eecs.umich.edu assert(auxv[auxv.size() - 1].a_type = M5_AT_PLATFORM); 6094793Sgblack@eecs.umich.edu auxv[auxv.size() - 1].a_val = aux_data_base; 6104793Sgblack@eecs.umich.edu 6114166Sgblack@eecs.umich.edu //Copy the aux stuff 6124166Sgblack@eecs.umich.edu for(int x = 0; x < auxv.size(); x++) 6134166Sgblack@eecs.umich.edu { 6144166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 6154166Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_type), intSize); 6164166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 6174166Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_val), intSize); 6184166Sgblack@eecs.umich.edu } 6194166Sgblack@eecs.umich.edu //Write out the terminating zeroed auxilliary vector 6204166Sgblack@eecs.umich.edu const uint64_t zero = 0; 6214166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 6224166Sgblack@eecs.umich.edu (uint8_t*)&zero, 2 * intSize); 6234166Sgblack@eecs.umich.edu 6244793Sgblack@eecs.umich.edu initVirtMem->writeString(aux_data_base, platform.c_str()); 6254793Sgblack@eecs.umich.edu 6264166Sgblack@eecs.umich.edu copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 6274166Sgblack@eecs.umich.edu copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 6284166Sgblack@eecs.umich.edu 6294166Sgblack@eecs.umich.edu initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 6304166Sgblack@eecs.umich.edu 6315713Shsul@eecs.umich.edu ThreadContext *tc = system->getThreadContext(contextIds[0]); 6324793Sgblack@eecs.umich.edu //Set the stack pointer register 6335713Shsul@eecs.umich.edu tc->setIntReg(StackPointerReg, stack_min); 6344166Sgblack@eecs.umich.edu 6354166Sgblack@eecs.umich.edu Addr prog_entry = objFile->entryPoint(); 6365246Sgblack@eecs.umich.edu // There doesn't need to be any segment base added in since we're dealing 6375246Sgblack@eecs.umich.edu // with the flat segmentation model. 6385713Shsul@eecs.umich.edu tc->setPC(prog_entry); 6395713Shsul@eecs.umich.edu tc->setNextPC(prog_entry + sizeof(MachInst)); 6404166Sgblack@eecs.umich.edu 6414166Sgblack@eecs.umich.edu //Align the "stack_min" to a page boundary. 6424166Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, pageSize); 6434166Sgblack@eecs.umich.edu 6444166Sgblack@eecs.umich.edu// num_processes++; 6454166Sgblack@eecs.umich.edu} 6465956Sgblack@eecs.umich.edu 6475956Sgblack@eecs.umich.eduvoid 6485956Sgblack@eecs.umich.eduX86_64LiveProcess::argsInit(int intSize, int pageSize) 6495956Sgblack@eecs.umich.edu{ 6505973Sgblack@eecs.umich.edu std::vector<AuxVector<uint64_t> > extraAuxvs; 6515973Sgblack@eecs.umich.edu X86LiveProcess::argsInit<uint64_t>(pageSize, extraAuxvs); 6525956Sgblack@eecs.umich.edu} 6535956Sgblack@eecs.umich.edu 6545956Sgblack@eecs.umich.eduvoid 6555956Sgblack@eecs.umich.eduI386LiveProcess::argsInit(int intSize, int pageSize) 6565956Sgblack@eecs.umich.edu{ 6575973Sgblack@eecs.umich.edu std::vector<AuxVector<uint32_t> > extraAuxvs; 6585973Sgblack@eecs.umich.edu //Tell the binary where the vsyscall part of the vsyscall page is. 6595973Sgblack@eecs.umich.edu extraAuxvs.push_back(AuxVector<uint32_t>(0x20, 6605973Sgblack@eecs.umich.edu vsyscallPage.base + vsyscallPage.vsyscallOffset)); 6615973Sgblack@eecs.umich.edu extraAuxvs.push_back(AuxVector<uint32_t>(0x21, vsyscallPage.base)); 6625973Sgblack@eecs.umich.edu X86LiveProcess::argsInit<uint32_t>(pageSize, extraAuxvs); 6635956Sgblack@eecs.umich.edu} 6645958Sgblack@eecs.umich.edu 6655958Sgblack@eecs.umich.eduvoid 6665958Sgblack@eecs.umich.eduX86LiveProcess::setSyscallReturn(ThreadContext *tc, SyscallReturn return_value) 6675958Sgblack@eecs.umich.edu{ 6685958Sgblack@eecs.umich.edu tc->setIntReg(INTREG_RAX, return_value.value()); 6695958Sgblack@eecs.umich.edu} 6705958Sgblack@eecs.umich.edu 6715958Sgblack@eecs.umich.eduX86ISA::IntReg 6725958Sgblack@eecs.umich.eduX86_64LiveProcess::getSyscallArg(ThreadContext *tc, int i) 6735958Sgblack@eecs.umich.edu{ 6745958Sgblack@eecs.umich.edu assert(i < NumArgumentRegs); 6755958Sgblack@eecs.umich.edu return tc->readIntReg(ArgumentReg[i]); 6765958Sgblack@eecs.umich.edu} 6775958Sgblack@eecs.umich.edu 6785958Sgblack@eecs.umich.eduvoid 6795958Sgblack@eecs.umich.eduX86_64LiveProcess::setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val) 6805958Sgblack@eecs.umich.edu{ 6815958Sgblack@eecs.umich.edu assert(i < NumArgumentRegs); 6825958Sgblack@eecs.umich.edu return tc->setIntReg(ArgumentReg[i], val); 6835958Sgblack@eecs.umich.edu} 6845958Sgblack@eecs.umich.edu 6855958Sgblack@eecs.umich.eduX86ISA::IntReg 6865958Sgblack@eecs.umich.eduI386LiveProcess::getSyscallArg(ThreadContext *tc, int i) 6875958Sgblack@eecs.umich.edu{ 6885959Sgblack@eecs.umich.edu assert(i < NumArgumentRegs32); 6895959Sgblack@eecs.umich.edu return tc->readIntReg(ArgumentReg32[i]); 6905958Sgblack@eecs.umich.edu} 6915958Sgblack@eecs.umich.edu 6925958Sgblack@eecs.umich.eduvoid 6935958Sgblack@eecs.umich.eduI386LiveProcess::setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val) 6945958Sgblack@eecs.umich.edu{ 6955959Sgblack@eecs.umich.edu assert(i < NumArgumentRegs); 6965959Sgblack@eecs.umich.edu return tc->setIntReg(ArgumentReg[i], val); 6975958Sgblack@eecs.umich.edu} 698