process.cc revision 4166
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. Illustrative 434166Sgblack@eecs.umich.edu * examples of non-commercial use are academic research, personal study, 444166Sgblack@eecs.umich.edu * teaching, education and corporate research & development. 454166Sgblack@eecs.umich.edu * Illustrative examples of commercial use are distributing products for 464166Sgblack@eecs.umich.edu * commercial advantage and providing services using the software for 474166Sgblack@eecs.umich.edu * commercial advantage. 484166Sgblack@eecs.umich.edu * 494166Sgblack@eecs.umich.edu * If you wish to use this software or functionality therein that may be 504166Sgblack@eecs.umich.edu * covered by patents for commercial use, please contact: 514166Sgblack@eecs.umich.edu * Director of Intellectual Property Licensing 524166Sgblack@eecs.umich.edu * Office of Strategy and Technology 534166Sgblack@eecs.umich.edu * Hewlett-Packard Company 544166Sgblack@eecs.umich.edu * 1501 Page Mill Road 554166Sgblack@eecs.umich.edu * Palo Alto, California 94304 564166Sgblack@eecs.umich.edu * 574166Sgblack@eecs.umich.edu * Redistributions of source code must retain the above copyright notice, 584166Sgblack@eecs.umich.edu * this list of conditions and the following disclaimer. Redistributions 594166Sgblack@eecs.umich.edu * in binary form must reproduce the above copyright notice, this list of 604166Sgblack@eecs.umich.edu * conditions and the following disclaimer in the documentation and/or 614166Sgblack@eecs.umich.edu * other materials provided with the distribution. Neither the name of 624166Sgblack@eecs.umich.edu * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 634166Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 644166Sgblack@eecs.umich.edu * this software without specific prior written permission. No right of 654166Sgblack@eecs.umich.edu * sublicense is granted herewith. Derivatives of the software and 664166Sgblack@eecs.umich.edu * output created using the software may be prepared, but only for 674166Sgblack@eecs.umich.edu * Non-Commercial Uses. Derivatives of the software may be shared with 684166Sgblack@eecs.umich.edu * others provided: (i) the others agree to abide by the list of 694166Sgblack@eecs.umich.edu * conditions herein which includes the Non-Commercial Use restrictions; 704166Sgblack@eecs.umich.edu * and (ii) such Derivatives of the software include the above copyright 714166Sgblack@eecs.umich.edu * notice to acknowledge the contribution from this software where 724166Sgblack@eecs.umich.edu * applicable, this list of conditions and the disclaimer below. 734166Sgblack@eecs.umich.edu * 744166Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 754166Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 764166Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 774166Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. 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" 914166Sgblack@eecs.umich.edu#include "arch/x86/types.hh" 924166Sgblack@eecs.umich.edu#include "base/loader/object_file.hh" 934166Sgblack@eecs.umich.edu#include "base/loader/elf_object.hh" 944166Sgblack@eecs.umich.edu#include "base/misc.hh" 954166Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 964166Sgblack@eecs.umich.edu#include "mem/page_table.hh" 974166Sgblack@eecs.umich.edu#include "mem/translating_port.hh" 984166Sgblack@eecs.umich.edu#include "sim/system.hh" 994166Sgblack@eecs.umich.edu 1004166Sgblack@eecs.umich.eduusing namespace std; 1014166Sgblack@eecs.umich.eduusing namespace X86ISA; 1024166Sgblack@eecs.umich.edu 1034166Sgblack@eecs.umich.eduM5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val) 1044166Sgblack@eecs.umich.edu{ 1054166Sgblack@eecs.umich.edu a_type = TheISA::htog(type); 1064166Sgblack@eecs.umich.edu a_val = TheISA::htog(val); 1074166Sgblack@eecs.umich.edu} 1084166Sgblack@eecs.umich.edu 1094166Sgblack@eecs.umich.eduX86LiveProcess::X86LiveProcess(const std::string &nm, ObjectFile *objFile, 1104166Sgblack@eecs.umich.edu System *_system, int stdin_fd, int stdout_fd, int stderr_fd, 1114166Sgblack@eecs.umich.edu std::vector<std::string> &argv, std::vector<std::string> &envp, 1124166Sgblack@eecs.umich.edu const std::string &cwd, 1134166Sgblack@eecs.umich.edu uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid, 1144166Sgblack@eecs.umich.edu uint64_t _pid, uint64_t _ppid) 1154166Sgblack@eecs.umich.edu : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd, 1164166Sgblack@eecs.umich.edu argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid) 1174166Sgblack@eecs.umich.edu{ 1184166Sgblack@eecs.umich.edu brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 1194166Sgblack@eecs.umich.edu brk_point = roundUp(brk_point, VMPageSize); 1204166Sgblack@eecs.umich.edu 1214166Sgblack@eecs.umich.edu // Set pointer for next thread stack. Reserve 8M for main stack. 1224166Sgblack@eecs.umich.edu next_thread_stack_base = stack_base - (8 * 1024 * 1024); 1234166Sgblack@eecs.umich.edu 1244166Sgblack@eecs.umich.edu // Set up stack. On SPARC Linux, stack goes from the top of memory 1254166Sgblack@eecs.umich.edu // downward, less the hole for the kernel address space. 1264166Sgblack@eecs.umich.edu stack_base = (Addr)0x80000000000ULL; 1274166Sgblack@eecs.umich.edu 1284166Sgblack@eecs.umich.edu // Set up region for mmaps. Tru64 seems to start just above 0 and 1294166Sgblack@eecs.umich.edu // grow up from there. 1304166Sgblack@eecs.umich.edu mmap_start = mmap_end = 0xfffff80000000000ULL; 1314166Sgblack@eecs.umich.edu} 1324166Sgblack@eecs.umich.edu 1334166Sgblack@eecs.umich.eduvoid X86LiveProcess::handleTrap(int trapNum, ThreadContext *tc) 1344166Sgblack@eecs.umich.edu{ 1354166Sgblack@eecs.umich.edu switch(trapNum) 1364166Sgblack@eecs.umich.edu { 1374166Sgblack@eecs.umich.edu default: 1384166Sgblack@eecs.umich.edu panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum); 1394166Sgblack@eecs.umich.edu } 1404166Sgblack@eecs.umich.edu} 1414166Sgblack@eecs.umich.edu 1424166Sgblack@eecs.umich.eduvoid 1434166Sgblack@eecs.umich.eduX86LiveProcess::startup() 1444166Sgblack@eecs.umich.edu{ 1454166Sgblack@eecs.umich.edu argsInit(sizeof(IntReg), VMPageSize); 1464166Sgblack@eecs.umich.edu 1474166Sgblack@eecs.umich.edu //The AMD64 abi says that only rsp and rdx are defined at process 1484166Sgblack@eecs.umich.edu //startup. rsp will be set by argsInit, and I don't understand what 1494166Sgblack@eecs.umich.edu //rdx should be set to. The other floating point and integer registers 1504166Sgblack@eecs.umich.edu //will be zeroed by the register file constructors, but control registers 1514166Sgblack@eecs.umich.edu //should be initialized here. Since none of those are implemented, there 1524166Sgblack@eecs.umich.edu //isn't anything here. 1534166Sgblack@eecs.umich.edu} 1544166Sgblack@eecs.umich.edu 1554166Sgblack@eecs.umich.eduvoid 1564166Sgblack@eecs.umich.eduX86LiveProcess::argsInit(int intSize, int pageSize) 1574166Sgblack@eecs.umich.edu{ 1584166Sgblack@eecs.umich.edu typedef M5_64_auxv_t auxv_t; 1594166Sgblack@eecs.umich.edu Process::startup(); 1604166Sgblack@eecs.umich.edu 1614166Sgblack@eecs.umich.edu string filename; 1624166Sgblack@eecs.umich.edu if(argv.size() < 1) 1634166Sgblack@eecs.umich.edu filename = ""; 1644166Sgblack@eecs.umich.edu else 1654166Sgblack@eecs.umich.edu filename = argv[0]; 1664166Sgblack@eecs.umich.edu 1674166Sgblack@eecs.umich.edu Addr alignmentMask = ~(intSize - 1); 1684166Sgblack@eecs.umich.edu 1694166Sgblack@eecs.umich.edu // load object file into target memory 1704166Sgblack@eecs.umich.edu objFile->loadSections(initVirtMem); 1714166Sgblack@eecs.umich.edu 1724166Sgblack@eecs.umich.edu //These are the auxilliary vector types 1734166Sgblack@eecs.umich.edu enum auxTypes 1744166Sgblack@eecs.umich.edu { 1754166Sgblack@eecs.umich.edu X86_AT_NULL = 0, 1764166Sgblack@eecs.umich.edu X86_AT_IGNORE = 1, 1774166Sgblack@eecs.umich.edu X86_AT_EXECFD = 2, 1784166Sgblack@eecs.umich.edu X86_AT_PHDR = 3, 1794166Sgblack@eecs.umich.edu X86_AT_PHENT = 4, 1804166Sgblack@eecs.umich.edu X86_AT_PHNUM = 5, 1814166Sgblack@eecs.umich.edu X86_AT_PAGESZ = 6, 1824166Sgblack@eecs.umich.edu X86_AT_BASE = 7, 1834166Sgblack@eecs.umich.edu X86_AT_FLAGS = 8, 1844166Sgblack@eecs.umich.edu X86_AT_ENTRY = 9, 1854166Sgblack@eecs.umich.edu X86_AT_NOTELF = 10, 1864166Sgblack@eecs.umich.edu X86_AT_UID = 11, 1874166Sgblack@eecs.umich.edu X86_AT_EUID = 12, 1884166Sgblack@eecs.umich.edu X86_AT_GID = 13, 1894166Sgblack@eecs.umich.edu X86_AT_EGID = 14 1904166Sgblack@eecs.umich.edu }; 1914166Sgblack@eecs.umich.edu 1924166Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 1934166Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 1944166Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 1954166Sgblack@eecs.umich.edu if(elfObject) 1964166Sgblack@eecs.umich.edu { 1974166Sgblack@eecs.umich.edu /* 1984166Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 1994166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_HWCAP, hwcap)); 2004166Sgblack@eecs.umich.edu //The system page size 2014166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PAGESZ, SparcISA::VMPageSize)); 2024166Sgblack@eecs.umich.edu //Defined to be 100 in the kernel source. 2034166Sgblack@eecs.umich.edu //Frequency at which times() increments 2044166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_CLKTCK, 100)); 2054166Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 2064166Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 2074166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PHDR, elfObject->programHeaderTable())); 2084166Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 2094166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PHENT, elfObject->programHeaderSize())); 2104166Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 2114166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PHNUM, elfObject->programHeaderCount())); 2124166Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 2134166Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 2144166Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 2154166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_BASE, 0)); 2164166Sgblack@eecs.umich.edu //This is hardwired to 0 in the elf loading code in the kernel 2174166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_FLAGS, 0)); 2184166Sgblack@eecs.umich.edu //The entry point to the program 2194166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_ENTRY, objFile->entryPoint())); 2204166Sgblack@eecs.umich.edu //Different user and group IDs 2214166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_UID, uid())); 2224166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_EUID, euid())); 2234166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_GID, gid())); 2244166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_EGID, egid())); 2254166Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 2264166Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_SECURE, 0));*/ 2274166Sgblack@eecs.umich.edu } 2284166Sgblack@eecs.umich.edu 2294166Sgblack@eecs.umich.edu //Figure out how big the initial stack needs to be 2304166Sgblack@eecs.umich.edu 2314166Sgblack@eecs.umich.edu // The unaccounted for 0 at the top of the stack 2324166Sgblack@eecs.umich.edu int mysterious_size = intSize; 2334166Sgblack@eecs.umich.edu 2344166Sgblack@eecs.umich.edu //This is the name of the file which is present on the initial stack 2354166Sgblack@eecs.umich.edu //It's purpose is to let the user space linker examine the original file. 2364166Sgblack@eecs.umich.edu int file_name_size = filename.size() + 1; 2374166Sgblack@eecs.umich.edu 2384166Sgblack@eecs.umich.edu int env_data_size = 0; 2394166Sgblack@eecs.umich.edu for (int i = 0; i < envp.size(); ++i) { 2404166Sgblack@eecs.umich.edu env_data_size += envp[i].size() + 1; 2414166Sgblack@eecs.umich.edu } 2424166Sgblack@eecs.umich.edu int arg_data_size = 0; 2434166Sgblack@eecs.umich.edu for (int i = 0; i < argv.size(); ++i) { 2444166Sgblack@eecs.umich.edu arg_data_size += argv[i].size() + 1; 2454166Sgblack@eecs.umich.edu } 2464166Sgblack@eecs.umich.edu 2474166Sgblack@eecs.umich.edu //The info_block needs to be padded so it's size is a multiple of the 2484166Sgblack@eecs.umich.edu //alignment mask. Also, it appears that there needs to be at least some 2494166Sgblack@eecs.umich.edu //padding, so if the size is already a multiple, we need to increase it 2504166Sgblack@eecs.umich.edu //anyway. 2514166Sgblack@eecs.umich.edu int info_block_size = 2524166Sgblack@eecs.umich.edu (file_name_size + 2534166Sgblack@eecs.umich.edu env_data_size + 2544166Sgblack@eecs.umich.edu arg_data_size + 2554166Sgblack@eecs.umich.edu intSize) & alignmentMask; 2564166Sgblack@eecs.umich.edu 2574166Sgblack@eecs.umich.edu int info_block_padding = 2584166Sgblack@eecs.umich.edu info_block_size - 2594166Sgblack@eecs.umich.edu file_name_size - 2604166Sgblack@eecs.umich.edu env_data_size - 2614166Sgblack@eecs.umich.edu arg_data_size; 2624166Sgblack@eecs.umich.edu 2634166Sgblack@eecs.umich.edu //Each auxilliary vector is two 8 byte words 2644166Sgblack@eecs.umich.edu int aux_array_size = intSize * 2 * (auxv.size() + 1); 2654166Sgblack@eecs.umich.edu 2664166Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 2674166Sgblack@eecs.umich.edu int argv_array_size = intSize * (argv.size() + 1); 2684166Sgblack@eecs.umich.edu 2694166Sgblack@eecs.umich.edu int argc_size = intSize; 2704166Sgblack@eecs.umich.edu int window_save_size = intSize * 16; 2714166Sgblack@eecs.umich.edu 2724166Sgblack@eecs.umich.edu int space_needed = 2734166Sgblack@eecs.umich.edu mysterious_size + 2744166Sgblack@eecs.umich.edu info_block_size + 2754166Sgblack@eecs.umich.edu aux_array_size + 2764166Sgblack@eecs.umich.edu envp_array_size + 2774166Sgblack@eecs.umich.edu argv_array_size + 2784166Sgblack@eecs.umich.edu argc_size + 2794166Sgblack@eecs.umich.edu window_save_size; 2804166Sgblack@eecs.umich.edu 2814166Sgblack@eecs.umich.edu stack_min = stack_base - space_needed; 2824166Sgblack@eecs.umich.edu stack_min &= alignmentMask; 2834166Sgblack@eecs.umich.edu stack_size = stack_base - stack_min; 2844166Sgblack@eecs.umich.edu 2854166Sgblack@eecs.umich.edu // map memory 2864166Sgblack@eecs.umich.edu pTable->allocate(roundDown(stack_min, pageSize), 2874166Sgblack@eecs.umich.edu roundUp(stack_size, pageSize)); 2884166Sgblack@eecs.umich.edu 2894166Sgblack@eecs.umich.edu // map out initial stack contents 2904166Sgblack@eecs.umich.edu Addr mysterious_base = stack_base - mysterious_size; 2914166Sgblack@eecs.umich.edu Addr file_name_base = mysterious_base - file_name_size; 2924166Sgblack@eecs.umich.edu Addr env_data_base = file_name_base - env_data_size; 2934166Sgblack@eecs.umich.edu Addr arg_data_base = env_data_base - arg_data_size; 2944166Sgblack@eecs.umich.edu Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding; 2954166Sgblack@eecs.umich.edu Addr envp_array_base = auxv_array_base - envp_array_size; 2964166Sgblack@eecs.umich.edu Addr argv_array_base = envp_array_base - argv_array_size; 2974166Sgblack@eecs.umich.edu Addr argc_base = argv_array_base - argc_size; 2984166Sgblack@eecs.umich.edu#ifndef NDEBUG 2994166Sgblack@eecs.umich.edu // only used in DPRINTF 3004166Sgblack@eecs.umich.edu Addr window_save_base = argc_base - window_save_size; 3014166Sgblack@eecs.umich.edu#endif 3024166Sgblack@eecs.umich.edu 3034166Sgblack@eecs.umich.edu DPRINTF(X86, "The addresses of items on the initial stack:\n"); 3044166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - file name\n", file_name_base); 3054166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - env data\n", env_data_base); 3064166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - arg data\n", arg_data_base); 3074166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - auxv array\n", auxv_array_base); 3084166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - envp array\n", envp_array_base); 3094166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - argv array\n", argv_array_base); 3104166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - argc \n", argc_base); 3114166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - window save\n", window_save_base); 3124166Sgblack@eecs.umich.edu DPRINTF(X86, "0x%x - stack min\n", stack_min); 3134166Sgblack@eecs.umich.edu 3144166Sgblack@eecs.umich.edu // write contents to stack 3154166Sgblack@eecs.umich.edu 3164166Sgblack@eecs.umich.edu // figure out argc 3174166Sgblack@eecs.umich.edu uint64_t argc = argv.size(); 3184166Sgblack@eecs.umich.edu uint64_t guestArgc = TheISA::htog(argc); 3194166Sgblack@eecs.umich.edu 3204166Sgblack@eecs.umich.edu //Write out the mysterious 0 3214166Sgblack@eecs.umich.edu uint64_t mysterious_zero = 0; 3224166Sgblack@eecs.umich.edu initVirtMem->writeBlob(mysterious_base, 3234166Sgblack@eecs.umich.edu (uint8_t*)&mysterious_zero, mysterious_size); 3244166Sgblack@eecs.umich.edu 3254166Sgblack@eecs.umich.edu //Write the file name 3264166Sgblack@eecs.umich.edu initVirtMem->writeString(file_name_base, filename.c_str()); 3274166Sgblack@eecs.umich.edu 3284166Sgblack@eecs.umich.edu //Copy the aux stuff 3294166Sgblack@eecs.umich.edu for(int x = 0; x < auxv.size(); x++) 3304166Sgblack@eecs.umich.edu { 3314166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 3324166Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_type), intSize); 3334166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 3344166Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_val), intSize); 3354166Sgblack@eecs.umich.edu } 3364166Sgblack@eecs.umich.edu //Write out the terminating zeroed auxilliary vector 3374166Sgblack@eecs.umich.edu const uint64_t zero = 0; 3384166Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 3394166Sgblack@eecs.umich.edu (uint8_t*)&zero, 2 * intSize); 3404166Sgblack@eecs.umich.edu 3414166Sgblack@eecs.umich.edu copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 3424166Sgblack@eecs.umich.edu copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 3434166Sgblack@eecs.umich.edu 3444166Sgblack@eecs.umich.edu initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 3454166Sgblack@eecs.umich.edu 3464166Sgblack@eecs.umich.edu //Set up the thread context to start running the process 3474166Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(ArgumentReg0, argc); 3484166Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base); 3494166Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(StackPointerReg, stack_min); 3504166Sgblack@eecs.umich.edu 3514166Sgblack@eecs.umich.edu Addr prog_entry = objFile->entryPoint(); 3524166Sgblack@eecs.umich.edu threadContexts[0]->setPC(prog_entry); 3534166Sgblack@eecs.umich.edu threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 3544166Sgblack@eecs.umich.edu 3554166Sgblack@eecs.umich.edu //Align the "stack_min" to a page boundary. 3564166Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, pageSize); 3574166Sgblack@eecs.umich.edu 3584166Sgblack@eecs.umich.edu// num_processes++; 3594166Sgblack@eecs.umich.edu} 360