process.cc revision 4777
14166Sgblack@eecs.umich.edu/* 210554Salexandru.dutu@amd.com * Copyright (c) 2003-2006 The Regents of The University of Michigan 37087Snate@binkert.org * All rights reserved. 47087Snate@binkert.org * 57087Snate@binkert.org * Redistribution and use in source and binary forms, with or without 67087Snate@binkert.org * modification, are permitted provided that the following conditions are 77087Snate@binkert.org * met: redistributions of source code must retain the above copyright 87087Snate@binkert.org * notice, this list of conditions and the following disclaimer; 97087Snate@binkert.org * redistributions in binary form must reproduce the above copyright 107087Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 117087Snate@binkert.org * documentation and/or other materials provided with the distribution; 127087Snate@binkert.org * neither the name of the copyright holders nor the names of its 137087Snate@binkert.org * contributors may be used to endorse or promote products derived from 147087Snate@binkert.org * 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. 4511793Sbrandon.potter@amd.com * Illustrative examples of commercial use are distributing products for 4611793Sbrandon.potter@amd.com * commercial advantage and providing services using the software for 4711854Sbrandon.potter@amd.com * commercial advantage. 4811854Sbrandon.potter@amd.com * 4911854Sbrandon.potter@amd.com * If you wish to use this software or functionality therein that may be 5011793Sbrandon.potter@amd.com * covered by patents for commercial use, please contact: 518229Snate@binkert.org * Director of Intellectual Property Licensing 528229Snate@binkert.org * Office of Strategy and Technology 5310554Salexandru.dutu@amd.com * Hewlett-Packard Company 544166Sgblack@eecs.umich.edu * 1501 Page Mill Road 558229Snate@binkert.org * Palo Alto, California 94304 564166Sgblack@eecs.umich.edu * 5712334Sgabeblack@google.com * Redistributions of source code must retain the above copyright notice, 585004Sgblack@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 608232Snate@binkert.org * conditions and the following disclaimer in the documentation and/or 6110554Salexandru.dutu@amd.com * 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 6312431Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 6411854Sbrandon.potter@amd.com * this software without specific prior written permission. No right of 654434Ssaidi@eecs.umich.edu * sublicense is granted herewith. Derivatives of the software and 6611794Sbrandon.potter@amd.com * output created using the software may be prepared, but only for 6711800Sbrandon.potter@amd.com * 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. 735958Sgblack@eecs.umich.edu * 745958Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 755958Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 765958Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 7711906SBrandon.Potter@amd.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 785958Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 7911906SBrandon.Potter@amd.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 805958Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 815958Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 825958Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 8311704Santhony.gutierrez@amd.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 8411704Santhony.gutierrez@amd.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 8511704Santhony.gutierrez@amd.com * 8611704Santhony.gutierrez@amd.com * Authors: Gabe Black 875959Sgblack@eecs.umich.edu */ 885959Sgblack@eecs.umich.edu 895959Sgblack@eecs.umich.edu#include "arch/x86/isa_traits.hh" 905959Sgblack@eecs.umich.edu#include "arch/x86/process.hh" 915959Sgblack@eecs.umich.edu#include "arch/x86/types.hh" 925959Sgblack@eecs.umich.edu#include "base/loader/object_file.hh" 9311385Sbrandon.potter@amd.com#include "base/loader/elf_object.hh" 945959Sgblack@eecs.umich.edu#include "base/misc.hh" 9511704Santhony.gutierrez@amd.com#include "cpu/thread_context.hh" 9611704Santhony.gutierrez@amd.com#include "mem/page_table.hh" 9711704Santhony.gutierrez@amd.com#include "mem/translating_port.hh" 984166Sgblack@eecs.umich.edu#include "sim/process_impl.hh" 9912460Sgabeblack@google.com#include "sim/system.hh" 10012460Sgabeblack@google.com 10112460Sgabeblack@google.comusing namespace std; 10212460Sgabeblack@google.comusing namespace X86ISA; 10312460Sgabeblack@google.com 10412460Sgabeblack@google.comM5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val) 10512460Sgabeblack@google.com{ 10612460Sgabeblack@google.com a_type = TheISA::htog(type); 10712460Sgabeblack@google.com a_val = TheISA::htog(val); 10812431Sgabeblack@google.com} 10911851Sbrandon.potter@amd.com 11012431Sgabeblack@google.comX86LiveProcess::X86LiveProcess(const std::string &nm, ObjectFile *objFile, 11112448Sgabeblack@google.com System *_system, int stdin_fd, int stdout_fd, int stderr_fd, 11212460Sgabeblack@google.com std::vector<std::string> &argv, std::vector<std::string> &envp, 11312460Sgabeblack@google.com const std::string &cwd, 11412448Sgabeblack@google.com uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid, 11512448Sgabeblack@google.com uint64_t _pid, uint64_t _ppid) 11612431Sgabeblack@google.com : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd, 11712431Sgabeblack@google.com argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid) 1184166Sgblack@eecs.umich.edu{ 11911886Sbrandon.potter@amd.com brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 12011886Sbrandon.potter@amd.com brk_point = roundUp(brk_point, VMPageSize); 12111886Sbrandon.potter@amd.com 12213613Sgabeblack@google.com // Set pointer for next thread stack. Reserve 8M for main stack. 12311886Sbrandon.potter@amd.com next_thread_stack_base = stack_base - (8 * 1024 * 1024); 12411886Sbrandon.potter@amd.com 12511886Sbrandon.potter@amd.com // Set up stack. On SPARC Linux, stack goes from the top of memory 12611886Sbrandon.potter@amd.com // downward, less the hole for the kernel address space. 1275956Sgblack@eecs.umich.edu stack_base = (Addr)0x80000000000ULL; 1284166Sgblack@eecs.umich.edu 12911851Sbrandon.potter@amd.com // Set up region for mmaps. Tru64 seems to start just above 0 and 13011851Sbrandon.potter@amd.com // grow up from there. 13111851Sbrandon.potter@amd.com mmap_start = mmap_end = 0xfffff80000000000ULL; 1325956Sgblack@eecs.umich.edu} 1336709Svince@csl.cornell.edu 1346709Svince@csl.cornell.eduvoid X86LiveProcess::handleTrap(int trapNum, ThreadContext *tc) 13510318Sandreas.hansson@arm.com{ 1366709Svince@csl.cornell.edu switch(trapNum) 1379679Smjleven@sandia.gov { 1386709Svince@csl.cornell.edu default: 13911905SBrandon.Potter@amd.com panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum); 14011905SBrandon.Potter@amd.com } 14111905SBrandon.Potter@amd.com} 14211905SBrandon.Potter@amd.com 14311905SBrandon.Potter@amd.comvoid 14411905SBrandon.Potter@amd.comX86LiveProcess::startup() 1454166Sgblack@eecs.umich.edu{ 14611905SBrandon.Potter@amd.com argsInit(sizeof(IntReg), VMPageSize); 14711905SBrandon.Potter@amd.com 1484166Sgblack@eecs.umich.edu //The AMD64 abi says that only rsp and rdx are defined at process 1494166Sgblack@eecs.umich.edu //startup. rsp will be set by argsInit, and I don't understand what 1505973Sgblack@eecs.umich.edu //rdx should be set to. The other floating point and integer registers 15111877Sbrandon.potter@amd.com //will be zeroed by the register file constructors, but control registers 1525973Sgblack@eecs.umich.edu //should be initialized here. Since none of those are implemented, there 15313915Sgabeblack@google.com //isn't anything here. 1547720Sgblack@eecs.umich.edu} 1555973Sgblack@eecs.umich.edu 1565973Sgblack@eecs.umich.eduvoid 1577720Sgblack@eecs.umich.eduX86LiveProcess::argsInit(int intSize, int pageSize) 1587720Sgblack@eecs.umich.edu{ 1595973Sgblack@eecs.umich.edu typedef M5_64_auxv_t auxv_t; 16011877Sbrandon.potter@amd.com Process::startup(); 1615973Sgblack@eecs.umich.edu 1625973Sgblack@eecs.umich.edu string filename; 1635973Sgblack@eecs.umich.edu if(argv.size() < 1) 16411851Sbrandon.potter@amd.com filename = ""; 16511851Sbrandon.potter@amd.com else 16611851Sbrandon.potter@amd.com filename = argv[0]; 1674166Sgblack@eecs.umich.edu 16813867Salexandru.dutu@amd.com Addr alignmentMask = ~(intSize - 1); 16913867Salexandru.dutu@amd.com 17013867Salexandru.dutu@amd.com // load object file into target memory 1719026Sgblack@eecs.umich.edu objFile->loadSections(initVirtMem); 17210318Sandreas.hansson@arm.com 1735973Sgblack@eecs.umich.edu //These are the auxilliary vector types 1745973Sgblack@eecs.umich.edu enum auxTypes 17510318Sandreas.hansson@arm.com { 1765973Sgblack@eecs.umich.edu X86_AT_NULL = 0, 1775973Sgblack@eecs.umich.edu X86_AT_IGNORE = 1, 1785973Sgblack@eecs.umich.edu X86_AT_EXECFD = 2, 17911905SBrandon.Potter@amd.com X86_AT_PHDR = 3, 18011905SBrandon.Potter@amd.com X86_AT_PHENT = 4, 18111905SBrandon.Potter@amd.com X86_AT_PHNUM = 5, 18211905SBrandon.Potter@amd.com X86_AT_PAGESZ = 6, 18311905SBrandon.Potter@amd.com X86_AT_BASE = 7, 18411905SBrandon.Potter@amd.com X86_AT_FLAGS = 8, 1855956Sgblack@eecs.umich.edu X86_AT_ENTRY = 9, 18611905SBrandon.Potter@amd.com X86_AT_NOTELF = 10, 18711905SBrandon.Potter@amd.com X86_AT_UID = 11, 1885956Sgblack@eecs.umich.edu X86_AT_EUID = 12, 1895956Sgblack@eecs.umich.edu X86_AT_GID = 13, 1905956Sgblack@eecs.umich.edu X86_AT_EGID = 14, 19111851Sbrandon.potter@amd.com X86_AT_PLATFORM = 15, 1925956Sgblack@eecs.umich.edu X86_AT_HWCAP = 16, 1935956Sgblack@eecs.umich.edu X86_AT_CLKTCK = 17, 1945956Sgblack@eecs.umich.edu 1955956Sgblack@eecs.umich.edu X86_AT_SECURE = 13, 1964166Sgblack@eecs.umich.edu 1974166Sgblack@eecs.umich.edu X86_AT_VECTOR_SIZE = 44 1984166Sgblack@eecs.umich.edu }; 19911851Sbrandon.potter@amd.com 2004166Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 20111851Sbrandon.potter@amd.com //Auxilliary vectors are loaded only for elf formatted executables. 2025183Ssaidi@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 20313867Salexandru.dutu@amd.com if(elfObject) 20413867Salexandru.dutu@amd.com { 20513867Salexandru.dutu@amd.com //Bits which describe the system hardware capabilities 20611884Sbrandon.potter@amd.com //XXX Figure out what these should be 2075140Sgblack@eecs.umich.edu auxv.push_back(auxv_t(X86_AT_HWCAP, 0)); 20811906SBrandon.Potter@amd.com //The system page size 2098601Ssteve.reinhardt@amd.com auxv.push_back(auxv_t(X86_AT_PAGESZ, X86ISA::VMPageSize)); 2106709Svince@csl.cornell.edu //Frequency at which times() increments 2116709Svince@csl.cornell.edu auxv.push_back(auxv_t(X86_AT_CLKTCK, 100)); 2126709Svince@csl.cornell.edu // For statically linked executables, this is the virtual address of the 2136709Svince@csl.cornell.edu // program header tables if they appear in the executable image 2146709Svince@csl.cornell.edu auxv.push_back(auxv_t(X86_AT_PHDR, elfObject->programHeaderTable())); 2158852Sandreas.hansson@arm.com // This is the size of a program header entry from the elf file. 2166709Svince@csl.cornell.edu auxv.push_back(auxv_t(X86_AT_PHENT, elfObject->programHeaderSize())); 2176709Svince@csl.cornell.edu // This is the number of program headers from the original elf file. 2186709Svince@csl.cornell.edu auxv.push_back(auxv_t(X86_AT_PHNUM, elfObject->programHeaderCount())); 2196709Svince@csl.cornell.edu //Defined to be 100 in the kernel source. 2206709Svince@csl.cornell.edu //This is the address of the elf "interpreter", It should be set 2216709Svince@csl.cornell.edu //to 0 for regular executables. It should be something else 2226709Svince@csl.cornell.edu //(not sure what) for dynamic libraries. 2238852Sandreas.hansson@arm.com auxv.push_back(auxv_t(X86_AT_BASE, 0)); 2246709Svince@csl.cornell.edu 2256709Svince@csl.cornell.edu //XXX Figure out what this should be. 22610554Salexandru.dutu@amd.com auxv.push_back(auxv_t(X86_AT_FLAGS, 0)); 22710554Salexandru.dutu@amd.com //The entry point to the program 2285140Sgblack@eecs.umich.edu auxv.push_back(auxv_t(X86_AT_ENTRY, objFile->entryPoint())); 22912458Sgabeblack@google.com //Different user and group IDs 23012458Sgabeblack@google.com auxv.push_back(auxv_t(X86_AT_UID, uid())); 23112458Sgabeblack@google.com auxv.push_back(auxv_t(X86_AT_EUID, euid())); 23212458Sgabeblack@google.com auxv.push_back(auxv_t(X86_AT_GID, gid())); 23312458Sgabeblack@google.com auxv.push_back(auxv_t(X86_AT_EGID, egid())); 23412458Sgabeblack@google.com //Whether to enable "secure mode" in the executable 23512458Sgabeblack@google.com auxv.push_back(auxv_t(X86_AT_SECURE, 0)); 23610554Salexandru.dutu@amd.com //The string "x86_64" with unknown meaning 23710554Salexandru.dutu@amd.com auxv.push_back(auxv_t(X86_AT_PLATFORM, 0)); 23810554Salexandru.dutu@amd.com } 23910554Salexandru.dutu@amd.com 24010554Salexandru.dutu@amd.com //Figure out how big the initial stack needs to be 24112458Sgabeblack@google.com 24214010Sgabeblack@google.com // The unaccounted for 0 at the top of the stack 24310554Salexandru.dutu@amd.com int mysterious_size = intSize; 2445140Sgblack@eecs.umich.edu 24510554Salexandru.dutu@amd.com //This is the name of the file which is present on the initial stack 24610554Salexandru.dutu@amd.com //It's purpose is to let the user space linker examine the original file. 24710554Salexandru.dutu@amd.com int file_name_size = filename.size() + 1; 24810554Salexandru.dutu@amd.com 24910554Salexandru.dutu@amd.com int env_data_size = 0; 25010554Salexandru.dutu@amd.com for (int i = 0; i < envp.size(); ++i) { 25110554Salexandru.dutu@amd.com env_data_size += envp[i].size() + 1; 25210554Salexandru.dutu@amd.com } 25310554Salexandru.dutu@amd.com int arg_data_size = 0; 25412588Sgabeblack@google.com for (int i = 0; i < argv.size(); ++i) { 25512588Sgabeblack@google.com arg_data_size += argv[i].size() + 1; 25610554Salexandru.dutu@amd.com } 25710554Salexandru.dutu@amd.com 25810554Salexandru.dutu@amd.com //The info_block needs to be padded so it's size is a multiple of the 25910554Salexandru.dutu@amd.com //alignment mask. Also, it appears that there needs to be at least some 26010554Salexandru.dutu@amd.com //padding, so if the size is already a multiple, we need to increase it 26110554Salexandru.dutu@amd.com //anyway. 26212458Sgabeblack@google.com int info_block_size = 26314010Sgabeblack@google.com (file_name_size + 26410554Salexandru.dutu@amd.com env_data_size + 26510554Salexandru.dutu@amd.com arg_data_size + 26610554Salexandru.dutu@amd.com intSize) & alignmentMask; 26710554Salexandru.dutu@amd.com 26810554Salexandru.dutu@amd.com int info_block_padding = 26910554Salexandru.dutu@amd.com info_block_size - 27010554Salexandru.dutu@amd.com file_name_size - 27110554Salexandru.dutu@amd.com env_data_size - 27210554Salexandru.dutu@amd.com arg_data_size; 27310554Salexandru.dutu@amd.com 27410554Salexandru.dutu@amd.com //Each auxilliary vector is two 8 byte words 27510554Salexandru.dutu@amd.com int aux_array_size = intSize * 2 * (auxv.size() + 1); 27612458Sgabeblack@google.com 27714010Sgabeblack@google.com int envp_array_size = intSize * (envp.size() + 1); 27810554Salexandru.dutu@amd.com int argv_array_size = intSize * (argv.size() + 1); 27910554Salexandru.dutu@amd.com 28010554Salexandru.dutu@amd.com int argc_size = intSize; 28110554Salexandru.dutu@amd.com 28210554Salexandru.dutu@amd.com int space_needed = 28310554Salexandru.dutu@amd.com mysterious_size + 28410554Salexandru.dutu@amd.com info_block_size + 28510554Salexandru.dutu@amd.com aux_array_size + 28610554Salexandru.dutu@amd.com envp_array_size + 28710554Salexandru.dutu@amd.com argv_array_size + 28810554Salexandru.dutu@amd.com argc_size; 28910554Salexandru.dutu@amd.com 29012458Sgabeblack@google.com stack_min = stack_base - space_needed; 29114010Sgabeblack@google.com stack_min &= alignmentMask; 29210554Salexandru.dutu@amd.com stack_size = stack_base - stack_min; 29310554Salexandru.dutu@amd.com 29410554Salexandru.dutu@amd.com // map memory 29510554Salexandru.dutu@amd.com pTable->allocate(roundDown(stack_min, pageSize), 29610554Salexandru.dutu@amd.com roundUp(stack_size, pageSize)); 29710554Salexandru.dutu@amd.com 29810554Salexandru.dutu@amd.com // map out initial stack contents 29910554Salexandru.dutu@amd.com Addr mysterious_base = stack_base - mysterious_size; 30010554Salexandru.dutu@amd.com Addr file_name_base = mysterious_base - file_name_size; 30110554Salexandru.dutu@amd.com Addr env_data_base = file_name_base - env_data_size; 30210554Salexandru.dutu@amd.com Addr arg_data_base = env_data_base - arg_data_size; 30310554Salexandru.dutu@amd.com Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding; 30412458Sgabeblack@google.com Addr envp_array_base = auxv_array_base - envp_array_size; 30514010Sgabeblack@google.com Addr argv_array_base = envp_array_base - argv_array_size; 30610554Salexandru.dutu@amd.com Addr argc_base = argv_array_base - argc_size; 30710554Salexandru.dutu@amd.com 30810554Salexandru.dutu@amd.com DPRINTF(X86, "The addresses of items on the initial stack:\n"); 30910554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - file name\n", file_name_base); 31010554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - env data\n", env_data_base); 31110554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - arg data\n", arg_data_base); 31210554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - auxv array\n", auxv_array_base); 31310554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - envp array\n", envp_array_base); 31410554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - argv array\n", argv_array_base); 31510554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - argc \n", argc_base); 31610554Salexandru.dutu@amd.com DPRINTF(X86, "0x%x - stack min\n", stack_min); 31710554Salexandru.dutu@amd.com 31810554Salexandru.dutu@amd.com // write contents to stack 31910554Salexandru.dutu@amd.com 32010554Salexandru.dutu@amd.com // figure out argc 32110554Salexandru.dutu@amd.com uint64_t argc = argv.size(); 32210554Salexandru.dutu@amd.com uint64_t guestArgc = TheISA::htog(argc); 32310554Salexandru.dutu@amd.com 32410554Salexandru.dutu@amd.com //Write out the mysterious 0 32510554Salexandru.dutu@amd.com uint64_t mysterious_zero = 0; 32612588Sgabeblack@google.com initVirtMem->writeBlob(mysterious_base, 32712588Sgabeblack@google.com (uint8_t*)&mysterious_zero, mysterious_size); 32810554Salexandru.dutu@amd.com 32910554Salexandru.dutu@amd.com //Write the file name 33010590Sgabeblack@google.com initVirtMem->writeString(file_name_base, filename.c_str()); 33110554Salexandru.dutu@amd.com 33210554Salexandru.dutu@amd.com //Copy the aux stuff 33310554Salexandru.dutu@amd.com for(int x = 0; x < auxv.size(); x++) 33410554Salexandru.dutu@amd.com { 33510554Salexandru.dutu@amd.com initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 33610554Salexandru.dutu@amd.com (uint8_t*)&(auxv[x].a_type), intSize); 33712458Sgabeblack@google.com initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 33814010Sgabeblack@google.com (uint8_t*)&(auxv[x].a_val), intSize); 33910554Salexandru.dutu@amd.com } 34010554Salexandru.dutu@amd.com //Write out the terminating zeroed auxilliary vector 34110554Salexandru.dutu@amd.com const uint64_t zero = 0; 34210554Salexandru.dutu@amd.com initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 34310554Salexandru.dutu@amd.com (uint8_t*)&zero, 2 * intSize); 34410554Salexandru.dutu@amd.com 34512588Sgabeblack@google.com copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 34612588Sgabeblack@google.com copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 34710554Salexandru.dutu@amd.com 34810554Salexandru.dutu@amd.com initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 34910554Salexandru.dutu@amd.com 35010554Salexandru.dutu@amd.com //Set up the thread context to start running the process 35110554Salexandru.dutu@amd.com threadContexts[0]->setIntReg(StackPointerReg, stack_min); 35210554Salexandru.dutu@amd.com 35310554Salexandru.dutu@amd.com Addr prog_entry = objFile->entryPoint(); 35410554Salexandru.dutu@amd.com threadContexts[0]->setPC(prog_entry); 35510554Salexandru.dutu@amd.com threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 35610554Salexandru.dutu@amd.com 35710554Salexandru.dutu@amd.com //Align the "stack_min" to a page boundary. 35810554Salexandru.dutu@amd.com stack_min = roundDown(stack_min, pageSize); 35910590Sgabeblack@google.com 36010590Sgabeblack@google.com// num_processes++; 36110590Sgabeblack@google.com} 36210590Sgabeblack@google.com