process.cc revision 7532
16019Shines@cs.fsu.edu/* 27414SAli.Saidi@ARM.com * Copyright (c) 2010 ARM Limited 37414SAli.Saidi@ARM.com * All rights reserved 47414SAli.Saidi@ARM.com * 57414SAli.Saidi@ARM.com * The license below extends only to copyright in the software and shall 67414SAli.Saidi@ARM.com * not be construed as granting a license to any other intellectual 77414SAli.Saidi@ARM.com * property including but not limited to intellectual property relating 87414SAli.Saidi@ARM.com * to a hardware implementation of the functionality of the software 97414SAli.Saidi@ARM.com * licensed hereunder. You may use the software subject to the license 107414SAli.Saidi@ARM.com * terms below provided that you ensure that this notice is replicated 117414SAli.Saidi@ARM.com * unmodified and in its entirety in all distributions of the software, 127414SAli.Saidi@ARM.com * modified or unmodified, in source code or in binary form. 137414SAli.Saidi@ARM.com * 146019Shines@cs.fsu.edu * Copyright (c) 2007-2008 The Florida State University 156019Shines@cs.fsu.edu * All rights reserved. 166019Shines@cs.fsu.edu * 176019Shines@cs.fsu.edu * Redistribution and use in source and binary forms, with or without 186019Shines@cs.fsu.edu * modification, are permitted provided that the following conditions are 196019Shines@cs.fsu.edu * met: redistributions of source code must retain the above copyright 206019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer; 216019Shines@cs.fsu.edu * redistributions in binary form must reproduce the above copyright 226019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer in the 236019Shines@cs.fsu.edu * documentation and/or other materials provided with the distribution; 246019Shines@cs.fsu.edu * neither the name of the copyright holders nor the names of its 256019Shines@cs.fsu.edu * contributors may be used to endorse or promote products derived from 266019Shines@cs.fsu.edu * this software without specific prior written permission. 276019Shines@cs.fsu.edu * 286019Shines@cs.fsu.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 296019Shines@cs.fsu.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 306019Shines@cs.fsu.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 316019Shines@cs.fsu.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 326019Shines@cs.fsu.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 336019Shines@cs.fsu.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 346019Shines@cs.fsu.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 356019Shines@cs.fsu.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 366019Shines@cs.fsu.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 376019Shines@cs.fsu.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 386019Shines@cs.fsu.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 396019Shines@cs.fsu.edu * 406019Shines@cs.fsu.edu * Authors: Stephen Hines 417414SAli.Saidi@ARM.com * Ali Saidi 426019Shines@cs.fsu.edu */ 436019Shines@cs.fsu.edu 446019Shines@cs.fsu.edu#include "arch/arm/isa_traits.hh" 456019Shines@cs.fsu.edu#include "arch/arm/process.hh" 466019Shines@cs.fsu.edu#include "arch/arm/types.hh" 476019Shines@cs.fsu.edu#include "base/loader/elf_object.hh" 486019Shines@cs.fsu.edu#include "base/loader/object_file.hh" 496019Shines@cs.fsu.edu#include "base/misc.hh" 506019Shines@cs.fsu.edu#include "cpu/thread_context.hh" 516019Shines@cs.fsu.edu#include "mem/page_table.hh" 526019Shines@cs.fsu.edu#include "mem/translating_port.hh" 536019Shines@cs.fsu.edu#include "sim/process_impl.hh" 546019Shines@cs.fsu.edu#include "sim/system.hh" 556019Shines@cs.fsu.edu 566019Shines@cs.fsu.eduusing namespace std; 576019Shines@cs.fsu.eduusing namespace ArmISA; 586019Shines@cs.fsu.edu 597096Sgblack@eecs.umich.eduArmLiveProcess::ArmLiveProcess(LiveProcessParams *params, ObjectFile *objFile, 607096Sgblack@eecs.umich.edu ObjectFile::Arch _arch) 617096Sgblack@eecs.umich.edu : LiveProcess(params, objFile), arch(_arch) 626019Shines@cs.fsu.edu{ 636400Sgblack@eecs.umich.edu stack_base = 0xbf000000L; 646019Shines@cs.fsu.edu 656019Shines@cs.fsu.edu // Set pointer for next thread stack. Reserve 8M for main stack. 666019Shines@cs.fsu.edu next_thread_stack_base = stack_base - (8 * 1024 * 1024); 676019Shines@cs.fsu.edu 686019Shines@cs.fsu.edu // Set up break point (Top of Heap) 696019Shines@cs.fsu.edu brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 706019Shines@cs.fsu.edu brk_point = roundUp(brk_point, VMPageSize); 716019Shines@cs.fsu.edu 726019Shines@cs.fsu.edu // Set up region for mmaps. For now, start at bottom of kuseg space. 737172Sgblack@eecs.umich.edu mmap_start = mmap_end = 0x40000000L; 746019Shines@cs.fsu.edu} 756019Shines@cs.fsu.edu 766019Shines@cs.fsu.eduvoid 776019Shines@cs.fsu.eduArmLiveProcess::startup() 786019Shines@cs.fsu.edu{ 797532Ssteve.reinhardt@amd.com LiveProcess::startup(); 806019Shines@cs.fsu.edu argsInit(MachineBytes, VMPageSize); 816019Shines@cs.fsu.edu} 826019Shines@cs.fsu.edu 836019Shines@cs.fsu.eduvoid 846019Shines@cs.fsu.eduArmLiveProcess::copyStringArray32(std::vector<std::string> &strings, 856019Shines@cs.fsu.edu Addr array_ptr, Addr data_ptr, 866019Shines@cs.fsu.edu TranslatingPort* memPort) 876019Shines@cs.fsu.edu{ 886019Shines@cs.fsu.edu Addr data_ptr_swap; 896019Shines@cs.fsu.edu for (int i = 0; i < strings.size(); ++i) { 906019Shines@cs.fsu.edu data_ptr_swap = htog(data_ptr); 916019Shines@cs.fsu.edu memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr_swap, 926019Shines@cs.fsu.edu sizeof(uint32_t)); 936019Shines@cs.fsu.edu memPort->writeString(data_ptr, strings[i].c_str()); 946019Shines@cs.fsu.edu array_ptr += sizeof(uint32_t); 956019Shines@cs.fsu.edu data_ptr += strings[i].size() + 1; 966019Shines@cs.fsu.edu } 976019Shines@cs.fsu.edu // add NULL terminator 986019Shines@cs.fsu.edu data_ptr = 0; 996019Shines@cs.fsu.edu 1006019Shines@cs.fsu.edu memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr, sizeof(uint32_t)); 1016019Shines@cs.fsu.edu} 1026019Shines@cs.fsu.edu 1036019Shines@cs.fsu.eduvoid 1046019Shines@cs.fsu.eduArmLiveProcess::argsInit(int intSize, int pageSize) 1056019Shines@cs.fsu.edu{ 1066400Sgblack@eecs.umich.edu typedef AuxVector<uint32_t> auxv_t; 1076400Sgblack@eecs.umich.edu std::vector<auxv_t> auxv; 1086400Sgblack@eecs.umich.edu 1096400Sgblack@eecs.umich.edu string filename; 1106400Sgblack@eecs.umich.edu if (argv.size() < 1) 1116400Sgblack@eecs.umich.edu filename = ""; 1126400Sgblack@eecs.umich.edu else 1136400Sgblack@eecs.umich.edu filename = argv[0]; 1146400Sgblack@eecs.umich.edu 1156400Sgblack@eecs.umich.edu //We want 16 byte alignment 1166400Sgblack@eecs.umich.edu uint64_t align = 16; 1176400Sgblack@eecs.umich.edu 1186019Shines@cs.fsu.edu // load object file into target memory 1196019Shines@cs.fsu.edu objFile->loadSections(initVirtMem); 1206019Shines@cs.fsu.edu 1216400Sgblack@eecs.umich.edu enum ArmCpuFeature { 1226400Sgblack@eecs.umich.edu Arm_Swp = 1 << 0, 1236400Sgblack@eecs.umich.edu Arm_Half = 1 << 1, 1246400Sgblack@eecs.umich.edu Arm_Thumb = 1 << 2, 1256400Sgblack@eecs.umich.edu Arm_26Bit = 1 << 3, 1266400Sgblack@eecs.umich.edu Arm_FastMult = 1 << 4, 1276400Sgblack@eecs.umich.edu Arm_Fpa = 1 << 5, 1286400Sgblack@eecs.umich.edu Arm_Vfp = 1 << 6, 1296400Sgblack@eecs.umich.edu Arm_Edsp = 1 << 7, 1306400Sgblack@eecs.umich.edu Arm_Java = 1 << 8, 1316400Sgblack@eecs.umich.edu Arm_Iwmmxt = 1 << 9, 1327414SAli.Saidi@ARM.com Arm_Crunch = 1 << 10, 1337414SAli.Saidi@ARM.com Arm_ThumbEE = 1 << 11, 1347414SAli.Saidi@ARM.com Arm_Neon = 1 << 12, 1357414SAli.Saidi@ARM.com Arm_Vfpv3 = 1 << 13, 1367414SAli.Saidi@ARM.com Arm_Vfpv3d16 = 1 << 14 1376400Sgblack@eecs.umich.edu }; 1386400Sgblack@eecs.umich.edu 1396400Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 1406400Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 1416400Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 1426400Sgblack@eecs.umich.edu if (elfObject) { 1436400Sgblack@eecs.umich.edu uint32_t features = 1446400Sgblack@eecs.umich.edu Arm_Swp | 1456400Sgblack@eecs.umich.edu Arm_Half | 1466400Sgblack@eecs.umich.edu Arm_Thumb | 1476400Sgblack@eecs.umich.edu// Arm_26Bit | 1486400Sgblack@eecs.umich.edu Arm_FastMult | 1496400Sgblack@eecs.umich.edu// Arm_Fpa | 1506400Sgblack@eecs.umich.edu Arm_Vfp | 1516400Sgblack@eecs.umich.edu Arm_Edsp | 1527414SAli.Saidi@ARM.com// Arm_Java | 1536400Sgblack@eecs.umich.edu// Arm_Iwmmxt | 1546400Sgblack@eecs.umich.edu// Arm_Crunch | 1557414SAli.Saidi@ARM.com Arm_ThumbEE | 1567414SAli.Saidi@ARM.com Arm_Neon | 1577414SAli.Saidi@ARM.com Arm_Vfpv3 | 1587414SAli.Saidi@ARM.com Arm_Vfpv3d16 | 1596400Sgblack@eecs.umich.edu 0; 1606400Sgblack@eecs.umich.edu 1616400Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 1626400Sgblack@eecs.umich.edu //XXX Figure out what these should be 1636400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_HWCAP, features)); 1646400Sgblack@eecs.umich.edu //The system page size 1656400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PAGESZ, ArmISA::VMPageSize)); 1666400Sgblack@eecs.umich.edu //Frequency at which times() increments 1676400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_CLKTCK, 0x64)); 1686400Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 1696400Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 1706400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable())); 1716400Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 1726400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize())); 1736400Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 1746400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount())); 1756400Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 1766400Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 1776400Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 1786400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_BASE, 0)); 1796400Sgblack@eecs.umich.edu 1806400Sgblack@eecs.umich.edu //XXX Figure out what this should be. 1816400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_FLAGS, 0)); 1826400Sgblack@eecs.umich.edu //The entry point to the program 1836400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint())); 1846400Sgblack@eecs.umich.edu //Different user and group IDs 1856400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_UID, uid())); 1866400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EUID, euid())); 1876400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_GID, gid())); 1886400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EGID, egid())); 1896400Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 1906400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_SECURE, 0)); 1917414SAli.Saidi@ARM.com 1927414SAli.Saidi@ARM.com // Pointer to 16 bytes of random data 1937414SAli.Saidi@ARM.com auxv.push_back(auxv_t(M5_AT_RANDOM, 0)); 1947414SAli.Saidi@ARM.com 1956400Sgblack@eecs.umich.edu //The filename of the program 1966400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EXECFN, 0)); 1977414SAli.Saidi@ARM.com //The string "v71" -- ARM v7 architecture 1986400Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PLATFORM, 0)); 1996400Sgblack@eecs.umich.edu } 2006400Sgblack@eecs.umich.edu 2016400Sgblack@eecs.umich.edu //Figure out how big the initial stack nedes to be 2026400Sgblack@eecs.umich.edu 2036400Sgblack@eecs.umich.edu // A sentry NULL void pointer at the top of the stack. 2046400Sgblack@eecs.umich.edu int sentry_size = intSize; 2056400Sgblack@eecs.umich.edu 2067414SAli.Saidi@ARM.com string platform = "v71"; 2076400Sgblack@eecs.umich.edu int platform_size = platform.size() + 1; 2086400Sgblack@eecs.umich.edu 2097414SAli.Saidi@ARM.com // Bytes for AT_RANDOM above, we'll just keep them 0 2107414SAli.Saidi@ARM.com int aux_random_size = 16; // as per the specification 2117414SAli.Saidi@ARM.com 2126400Sgblack@eecs.umich.edu // The aux vectors are put on the stack in two groups. The first group are 2136400Sgblack@eecs.umich.edu // the vectors that are generated as the elf is loaded. The second group 2146400Sgblack@eecs.umich.edu // are the ones that were computed ahead of time and include the platform 2156400Sgblack@eecs.umich.edu // string. 2166400Sgblack@eecs.umich.edu int aux_data_size = filename.size() + 1; 2176400Sgblack@eecs.umich.edu 2186400Sgblack@eecs.umich.edu int env_data_size = 0; 2196400Sgblack@eecs.umich.edu for (int i = 0; i < envp.size(); ++i) { 2206400Sgblack@eecs.umich.edu env_data_size += envp[i].size() + 1; 2216400Sgblack@eecs.umich.edu } 2226019Shines@cs.fsu.edu int arg_data_size = 0; 2236019Shines@cs.fsu.edu for (int i = 0; i < argv.size(); ++i) { 2246019Shines@cs.fsu.edu arg_data_size += argv[i].size() + 1; 2256019Shines@cs.fsu.edu } 2266400Sgblack@eecs.umich.edu 2276400Sgblack@eecs.umich.edu int info_block_size = 2286400Sgblack@eecs.umich.edu sentry_size + env_data_size + arg_data_size + 2297414SAli.Saidi@ARM.com aux_data_size + platform_size + aux_random_size; 2306400Sgblack@eecs.umich.edu 2316400Sgblack@eecs.umich.edu //Each auxilliary vector is two 4 byte words 2326400Sgblack@eecs.umich.edu int aux_array_size = intSize * 2 * (auxv.size() + 1); 2336400Sgblack@eecs.umich.edu 2346400Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 2356400Sgblack@eecs.umich.edu int argv_array_size = intSize * (argv.size() + 1); 2366400Sgblack@eecs.umich.edu 2376400Sgblack@eecs.umich.edu int argc_size = intSize; 2386400Sgblack@eecs.umich.edu 2396400Sgblack@eecs.umich.edu //Figure out the size of the contents of the actual initial frame 2406400Sgblack@eecs.umich.edu int frame_size = 2416400Sgblack@eecs.umich.edu info_block_size + 2426400Sgblack@eecs.umich.edu aux_array_size + 2436400Sgblack@eecs.umich.edu envp_array_size + 2446400Sgblack@eecs.umich.edu argv_array_size + 2456400Sgblack@eecs.umich.edu argc_size; 2466400Sgblack@eecs.umich.edu 2476400Sgblack@eecs.umich.edu //There needs to be padding after the auxiliary vector data so that the 2486400Sgblack@eecs.umich.edu //very bottom of the stack is aligned properly. 2496400Sgblack@eecs.umich.edu int partial_size = frame_size; 2506400Sgblack@eecs.umich.edu int aligned_partial_size = roundUp(partial_size, align); 2516400Sgblack@eecs.umich.edu int aux_padding = aligned_partial_size - partial_size; 2526400Sgblack@eecs.umich.edu 2536400Sgblack@eecs.umich.edu int space_needed = frame_size + aux_padding; 2546400Sgblack@eecs.umich.edu 2556400Sgblack@eecs.umich.edu stack_min = stack_base - space_needed; 2566400Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, align); 2576400Sgblack@eecs.umich.edu stack_size = stack_base - stack_min; 2586400Sgblack@eecs.umich.edu 2596400Sgblack@eecs.umich.edu // map memory 2606400Sgblack@eecs.umich.edu pTable->allocate(roundDown(stack_min, pageSize), 2616400Sgblack@eecs.umich.edu roundUp(stack_size, pageSize)); 2626400Sgblack@eecs.umich.edu 2636400Sgblack@eecs.umich.edu // map out initial stack contents 2646400Sgblack@eecs.umich.edu uint32_t sentry_base = stack_base - sentry_size; 2656400Sgblack@eecs.umich.edu uint32_t aux_data_base = sentry_base - aux_data_size; 2666400Sgblack@eecs.umich.edu uint32_t env_data_base = aux_data_base - env_data_size; 2676400Sgblack@eecs.umich.edu uint32_t arg_data_base = env_data_base - arg_data_size; 2686400Sgblack@eecs.umich.edu uint32_t platform_base = arg_data_base - platform_size; 2697414SAli.Saidi@ARM.com uint32_t aux_random_base = platform_base - aux_random_size; 2707414SAli.Saidi@ARM.com uint32_t auxv_array_base = aux_random_base - aux_array_size - aux_padding; 2716400Sgblack@eecs.umich.edu uint32_t envp_array_base = auxv_array_base - envp_array_size; 2726400Sgblack@eecs.umich.edu uint32_t argv_array_base = envp_array_base - argv_array_size; 2736400Sgblack@eecs.umich.edu uint32_t argc_base = argv_array_base - argc_size; 2746400Sgblack@eecs.umich.edu 2756400Sgblack@eecs.umich.edu DPRINTF(Stack, "The addresses of items on the initial stack:\n"); 2766400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - aux data\n", aux_data_base); 2776400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - env data\n", env_data_base); 2786400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - arg data\n", arg_data_base); 2797414SAli.Saidi@ARM.com DPRINTF(Stack, "0x%x - random data\n", aux_random_base); 2806400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - platform base\n", platform_base); 2816400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - auxv array\n", auxv_array_base); 2826400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - envp array\n", envp_array_base); 2836400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - argv array\n", argv_array_base); 2846400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - argc \n", argc_base); 2856400Sgblack@eecs.umich.edu DPRINTF(Stack, "0x%x - stack min\n", stack_min); 2866400Sgblack@eecs.umich.edu 2876400Sgblack@eecs.umich.edu // write contents to stack 2886400Sgblack@eecs.umich.edu 2896400Sgblack@eecs.umich.edu // figure out argc 2906400Sgblack@eecs.umich.edu uint32_t argc = argv.size(); 2916400Sgblack@eecs.umich.edu uint32_t guestArgc = ArmISA::htog(argc); 2926400Sgblack@eecs.umich.edu 2936400Sgblack@eecs.umich.edu //Write out the sentry void * 2946400Sgblack@eecs.umich.edu uint32_t sentry_NULL = 0; 2956400Sgblack@eecs.umich.edu initVirtMem->writeBlob(sentry_base, 2966400Sgblack@eecs.umich.edu (uint8_t*)&sentry_NULL, sentry_size); 2976400Sgblack@eecs.umich.edu 2986400Sgblack@eecs.umich.edu //Fix up the aux vectors which point to other data 2996400Sgblack@eecs.umich.edu for (int i = auxv.size() - 1; i >= 0; i--) { 3006400Sgblack@eecs.umich.edu if (auxv[i].a_type == M5_AT_PLATFORM) { 3016400Sgblack@eecs.umich.edu auxv[i].a_val = platform_base; 3026400Sgblack@eecs.umich.edu initVirtMem->writeString(platform_base, platform.c_str()); 3036400Sgblack@eecs.umich.edu } else if (auxv[i].a_type == M5_AT_EXECFN) { 3046400Sgblack@eecs.umich.edu auxv[i].a_val = aux_data_base; 3056400Sgblack@eecs.umich.edu initVirtMem->writeString(aux_data_base, filename.c_str()); 3067414SAli.Saidi@ARM.com } else if (auxv[i].a_type == M5_AT_RANDOM) { 3077414SAli.Saidi@ARM.com auxv[i].a_val = aux_random_base; 3087414SAli.Saidi@ARM.com // Just leave the value 0, we don't want randomness 3096400Sgblack@eecs.umich.edu } 3106019Shines@cs.fsu.edu } 3116019Shines@cs.fsu.edu 3126400Sgblack@eecs.umich.edu //Copy the aux stuff 3136400Sgblack@eecs.umich.edu for(int x = 0; x < auxv.size(); x++) 3146400Sgblack@eecs.umich.edu { 3156400Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 3166400Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_type), intSize); 3176400Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 3186400Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_val), intSize); 3196400Sgblack@eecs.umich.edu } 3206400Sgblack@eecs.umich.edu //Write out the terminating zeroed auxilliary vector 3216400Sgblack@eecs.umich.edu const uint64_t zero = 0; 3226400Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 3236400Sgblack@eecs.umich.edu (uint8_t*)&zero, 2 * intSize); 3246019Shines@cs.fsu.edu 3256400Sgblack@eecs.umich.edu copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 3266400Sgblack@eecs.umich.edu copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 3276019Shines@cs.fsu.edu 3286400Sgblack@eecs.umich.edu initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 3296019Shines@cs.fsu.edu 3306020Sgblack@eecs.umich.edu ThreadContext *tc = system->getThreadContext(contextIds[0]); 3316400Sgblack@eecs.umich.edu //Set the stack pointer register 3326020Sgblack@eecs.umich.edu tc->setIntReg(StackPointerReg, stack_min); 3336400Sgblack@eecs.umich.edu //A pointer to a function to run when the program exits. We'll set this 3346400Sgblack@eecs.umich.edu //to zero explicitly to make sure this isn't used. 3356400Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg0, 0); 3366400Sgblack@eecs.umich.edu //Set argument regs 1 and 2 to argv[0] and envp[0] respectively 3376400Sgblack@eecs.umich.edu if (argv.size() > 0) { 3386400Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg1, arg_data_base + arg_data_size - 3396400Sgblack@eecs.umich.edu argv[argv.size() - 1].size() - 1); 3406400Sgblack@eecs.umich.edu } else { 3416400Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg1, 0); 3426400Sgblack@eecs.umich.edu } 3436400Sgblack@eecs.umich.edu if (envp.size() > 0) { 3446400Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg2, env_data_base + env_data_size - 3456400Sgblack@eecs.umich.edu envp[envp.size() - 1].size() - 1); 3466400Sgblack@eecs.umich.edu } else { 3476400Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg2, 0); 3486400Sgblack@eecs.umich.edu } 3496019Shines@cs.fsu.edu 3506019Shines@cs.fsu.edu Addr prog_entry = objFile->entryPoint(); 3517096Sgblack@eecs.umich.edu if (arch == ObjectFile::Thumb) 3527096Sgblack@eecs.umich.edu prog_entry = (prog_entry & ~mask(1)) | (ULL(1) << PcTBitShift); 3536020Sgblack@eecs.umich.edu tc->setPC(prog_entry); 3546020Sgblack@eecs.umich.edu tc->setNextPC(prog_entry + sizeof(MachInst)); 3556400Sgblack@eecs.umich.edu 3566400Sgblack@eecs.umich.edu //Align the "stack_min" to a page boundary. 3576400Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, pageSize); 3586019Shines@cs.fsu.edu} 3596019Shines@cs.fsu.edu 3606020Sgblack@eecs.umich.eduArmISA::IntReg 3616701Sgblack@eecs.umich.eduArmLiveProcess::getSyscallArg(ThreadContext *tc, int &i) 3626020Sgblack@eecs.umich.edu{ 3637441SAli.Saidi@ARM.com assert(i < 6); 3646701Sgblack@eecs.umich.edu return tc->readIntReg(ArgumentReg0 + i++); 3656020Sgblack@eecs.umich.edu} 3666020Sgblack@eecs.umich.edu 3677441SAli.Saidi@ARM.comuint64_t 3687441SAli.Saidi@ARM.comArmLiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width) 3697441SAli.Saidi@ARM.com{ 3707441SAli.Saidi@ARM.com assert(width == 32 || width == 64); 3717441SAli.Saidi@ARM.com if (width == 32) 3727441SAli.Saidi@ARM.com return getSyscallArg(tc, i); 3737441SAli.Saidi@ARM.com 3747441SAli.Saidi@ARM.com // 64 bit arguments are passed starting in an even register 3757441SAli.Saidi@ARM.com if (i % 2 != 0) 3767441SAli.Saidi@ARM.com i++; 3777441SAli.Saidi@ARM.com 3787441SAli.Saidi@ARM.com // Registers r0-r6 can be used 3797441SAli.Saidi@ARM.com assert(i < 5); 3807441SAli.Saidi@ARM.com uint64_t val; 3817441SAli.Saidi@ARM.com val = tc->readIntReg(ArgumentReg0 + i++); 3827441SAli.Saidi@ARM.com val |= ((uint64_t)tc->readIntReg(ArgumentReg0 + i++) << 32); 3837441SAli.Saidi@ARM.com return val; 3847441SAli.Saidi@ARM.com} 3857441SAli.Saidi@ARM.com 3867441SAli.Saidi@ARM.com 3876020Sgblack@eecs.umich.eduvoid 3886020Sgblack@eecs.umich.eduArmLiveProcess::setSyscallArg(ThreadContext *tc, 3896020Sgblack@eecs.umich.edu int i, ArmISA::IntReg val) 3906020Sgblack@eecs.umich.edu{ 3916020Sgblack@eecs.umich.edu assert(i < 4); 3926020Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg0 + i, val); 3936020Sgblack@eecs.umich.edu} 3946020Sgblack@eecs.umich.edu 3956020Sgblack@eecs.umich.eduvoid 3966020Sgblack@eecs.umich.eduArmLiveProcess::setSyscallReturn(ThreadContext *tc, 3976020Sgblack@eecs.umich.edu SyscallReturn return_value) 3986020Sgblack@eecs.umich.edu{ 3996020Sgblack@eecs.umich.edu tc->setIntReg(ReturnValueReg, return_value.value()); 4006020Sgblack@eecs.umich.edu} 401