process.cc revision 3669
12207SN/A/* 22207SN/A * Copyright (c) 2003-2004 The Regents of The University of Michigan 32207SN/A * All rights reserved. 42207SN/A * 52207SN/A * Redistribution and use in source and binary forms, with or without 62207SN/A * modification, are permitted provided that the following conditions are 72207SN/A * met: redistributions of source code must retain the above copyright 82207SN/A * notice, this list of conditions and the following disclaimer; 92207SN/A * redistributions in binary form must reproduce the above copyright 102207SN/A * notice, this list of conditions and the following disclaimer in the 112207SN/A * documentation and/or other materials provided with the distribution; 122207SN/A * neither the name of the copyright holders nor the names of its 132207SN/A * contributors may be used to endorse or promote products derived from 142207SN/A * this software without specific prior written permission. 152207SN/A * 162207SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172207SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182207SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192207SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202207SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212207SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222207SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232207SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242207SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252207SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262207SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Gabe Black 292665Ssaidi@eecs.umich.edu * Ali Saidi 302207SN/A */ 312207SN/A 323589Sgblack@eecs.umich.edu#include "arch/sparc/asi.hh" 332474SN/A#include "arch/sparc/isa_traits.hh" 342207SN/A#include "arch/sparc/process.hh" 352454SN/A#include "base/loader/object_file.hh" 362976Sgblack@eecs.umich.edu#include "base/loader/elf_object.hh" 372454SN/A#include "base/misc.hh" 382680Sktlim@umich.edu#include "cpu/thread_context.hh" 392561SN/A#include "mem/page_table.hh" 402561SN/A#include "mem/translating_port.hh" 412474SN/A#include "sim/system.hh" 422207SN/A 432458SN/Ausing namespace std; 442474SN/Ausing namespace SparcISA; 452458SN/A 462207SN/A 472474SN/ASparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile, 482474SN/A System *_system, int stdin_fd, int stdout_fd, int stderr_fd, 493114Sgblack@eecs.umich.edu std::vector<std::string> &argv, std::vector<std::string> &envp, 503669Sbinkertn@umich.edu const std::string &cwd, 513114Sgblack@eecs.umich.edu uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid, 523114Sgblack@eecs.umich.edu uint64_t _pid, uint64_t _ppid) 532474SN/A : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd, 543669Sbinkertn@umich.edu argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid) 552474SN/A{ 562474SN/A 572474SN/A // XXX all the below need to be updated for SPARC - Ali 582474SN/A brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 592474SN/A brk_point = roundUp(brk_point, VMPageSize); 602474SN/A 612561SN/A // Set up stack. On SPARC Linux, stack goes from the top of memory 622561SN/A // downward, less the hole for the kernel address space. 633044Sgblack@eecs.umich.edu stack_base = (Addr)0x80000000000ULL; 642474SN/A 652474SN/A // Set up region for mmaps. Tru64 seems to start just above 0 and 662474SN/A // grow up from there. 673044Sgblack@eecs.umich.edu mmap_start = mmap_end = 0xfffff80000000000ULL; 682474SN/A 692474SN/A // Set pointer for next thread stack. Reserve 8M for main stack. 702474SN/A next_thread_stack_base = stack_base - (8 * 1024 * 1024); 713415Sgblack@eecs.umich.edu 723415Sgblack@eecs.umich.edu //Initialize these to 0s 733415Sgblack@eecs.umich.edu fillStart = 0; 743415Sgblack@eecs.umich.edu spillStart = 0; 752474SN/A} 762474SN/A 772474SN/Avoid 782474SN/ASparcLiveProcess::startup() 792474SN/A{ 802474SN/A argsInit(MachineBytes, VMPageSize); 812561SN/A 822561SN/A //From the SPARC ABI 832561SN/A 842561SN/A //The process runs in user mode 852680Sktlim@umich.edu threadContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE, 0x02); 862561SN/A 872646Ssaidi@eecs.umich.edu //Setup default FP state 882680Sktlim@umich.edu threadContexts[0]->setMiscReg(MISCREG_FSR, 0); 892646Ssaidi@eecs.umich.edu 902680Sktlim@umich.edu threadContexts[0]->setMiscReg(MISCREG_TICK, 0); 912646Ssaidi@eecs.umich.edu // 922561SN/A /* 932561SN/A * Register window management registers 942561SN/A */ 952561SN/A 962561SN/A //No windows contain info from other programs 973415Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_OTHERWIN, 0); 982561SN/A //There are no windows to pop 993415Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_CANRESTORE, 0); 1002561SN/A //All windows are available to save into 1013415Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_CANSAVE, NWindows - 2); 1022561SN/A //All windows are "clean" 1033415Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_CLEANWIN, NWindows); 1042561SN/A //Start with register window 0 1053415Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_CWP, 0); 1063415Sgblack@eecs.umich.edu //Always use spill and fill traps 0 1073415Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_WSTATE, 0); 1083415Sgblack@eecs.umich.edu //Set the trap level to 0 1093415Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_TL, 0); 1103589Sgblack@eecs.umich.edu //Set the ASI register to something fixed 1113589Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_ASI, ASI_PRIMARY); 1122474SN/A} 1132474SN/A 1142585SN/Am5_auxv_t buildAuxVect(int64_t type, int64_t val) 1152585SN/A{ 1162585SN/A m5_auxv_t result; 1172585SN/A result.a_type = TheISA::htog(type); 1182585SN/A result.a_val = TheISA::htog(val); 1192585SN/A return result; 1202585SN/A} 1212585SN/A 1223415Sgblack@eecs.umich.edu//We only use 19 instructions for the trap handlers, but there would be 1233415Sgblack@eecs.umich.edu//space for 32 in a real SPARC trap table. 1243415Sgblack@eecs.umich.educonst int numFillInsts = 32; 1253415Sgblack@eecs.umich.educonst int numSpillInsts = 32; 1263415Sgblack@eecs.umich.edu 1273415Sgblack@eecs.umich.eduMachInst fillHandler[numFillInsts] = 1283415Sgblack@eecs.umich.edu{ 1293415Sgblack@eecs.umich.edu htog(0x87802018), //wr %g0, ASI_AIUP, %asi 1303415Sgblack@eecs.umich.edu htog(0xe0dba7ff), //ldxa [%sp + BIAS + (0*8)] %asi, %l0 1313415Sgblack@eecs.umich.edu htog(0xe2dba807), //ldxa [%sp + BIAS + (1*8)] %asi, %l1 1323415Sgblack@eecs.umich.edu htog(0xe4dba80f), //ldxa [%sp + BIAS + (2*8)] %asi, %l2 1333415Sgblack@eecs.umich.edu htog(0xe6dba817), //ldxa [%sp + BIAS + (3*8)] %asi, %l3 1343415Sgblack@eecs.umich.edu htog(0xe8dba81f), //ldxa [%sp + BIAS + (4*8)] %asi, %l4 1353415Sgblack@eecs.umich.edu htog(0xeadba827), //ldxa [%sp + BIAS + (5*8)] %asi, %l5 1363415Sgblack@eecs.umich.edu htog(0xecdba82f), //ldxa [%sp + BIAS + (6*8)] %asi, %l6 1373415Sgblack@eecs.umich.edu htog(0xeedba837), //ldxa [%sp + BIAS + (7*8)] %asi, %l7 1383415Sgblack@eecs.umich.edu htog(0xf0dba83f), //ldxa [%sp + BIAS + (8*8)] %asi, %i0 1393415Sgblack@eecs.umich.edu htog(0xf2dba847), //ldxa [%sp + BIAS + (9*8)] %asi, %i1 1403415Sgblack@eecs.umich.edu htog(0xf4dba84f), //ldxa [%sp + BIAS + (10*8)] %asi, %i2 1413415Sgblack@eecs.umich.edu htog(0xf6dba857), //ldxa [%sp + BIAS + (11*8)] %asi, %i3 1423415Sgblack@eecs.umich.edu htog(0xf8dba85f), //ldxa [%sp + BIAS + (12*8)] %asi, %i4 1433415Sgblack@eecs.umich.edu htog(0xfadba867), //ldxa [%sp + BIAS + (13*8)] %asi, %i5 1443415Sgblack@eecs.umich.edu htog(0xfcdba86f), //ldxa [%sp + BIAS + (14*8)] %asi, %i6 1453415Sgblack@eecs.umich.edu htog(0xfedba877), //ldxa [%sp + BIAS + (15*8)] %asi, %i7 1463415Sgblack@eecs.umich.edu htog(0x83880000), //restored 1473415Sgblack@eecs.umich.edu htog(0x83F00000), //retry 1483415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1493415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1503415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1513415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1523415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1533415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1543415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1553415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1563415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1573415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1583415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1593415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1603415Sgblack@eecs.umich.edu htog(0x00000000) //illtrap 1613415Sgblack@eecs.umich.edu}; 1623415Sgblack@eecs.umich.edu 1633415Sgblack@eecs.umich.eduMachInst spillHandler[numSpillInsts] = 1643415Sgblack@eecs.umich.edu{ 1653415Sgblack@eecs.umich.edu htog(0x87802018), //wr %g0, ASI_AIUP, %asi 1663415Sgblack@eecs.umich.edu htog(0xe0f3a7ff), //stxa %l0, [%sp + BIAS + (0*8)] %asi 1673415Sgblack@eecs.umich.edu htog(0xe2f3a807), //stxa %l1, [%sp + BIAS + (1*8)] %asi 1683415Sgblack@eecs.umich.edu htog(0xe4f3a80f), //stxa %l2, [%sp + BIAS + (2*8)] %asi 1693415Sgblack@eecs.umich.edu htog(0xe6f3a817), //stxa %l3, [%sp + BIAS + (3*8)] %asi 1703415Sgblack@eecs.umich.edu htog(0xe8f3a81f), //stxa %l4, [%sp + BIAS + (4*8)] %asi 1713415Sgblack@eecs.umich.edu htog(0xeaf3a827), //stxa %l5, [%sp + BIAS + (5*8)] %asi 1723415Sgblack@eecs.umich.edu htog(0xecf3a82f), //stxa %l6, [%sp + BIAS + (6*8)] %asi 1733415Sgblack@eecs.umich.edu htog(0xeef3a837), //stxa %l7, [%sp + BIAS + (7*8)] %asi 1743415Sgblack@eecs.umich.edu htog(0xf0f3a83f), //stxa %i0, [%sp + BIAS + (8*8)] %asi 1753415Sgblack@eecs.umich.edu htog(0xf2f3a847), //stxa %i1, [%sp + BIAS + (9*8)] %asi 1763415Sgblack@eecs.umich.edu htog(0xf4f3a84f), //stxa %i2, [%sp + BIAS + (10*8)] %asi 1773415Sgblack@eecs.umich.edu htog(0xf6f3a857), //stxa %i3, [%sp + BIAS + (11*8)] %asi 1783415Sgblack@eecs.umich.edu htog(0xf8f3a85f), //stxa %i4, [%sp + BIAS + (12*8)] %asi 1793415Sgblack@eecs.umich.edu htog(0xfaf3a867), //stxa %i5, [%sp + BIAS + (13*8)] %asi 1803415Sgblack@eecs.umich.edu htog(0xfcf3a86f), //stxa %i6, [%sp + BIAS + (14*8)] %asi 1813415Sgblack@eecs.umich.edu htog(0xfef3a877), //stxa %i7, [%sp + BIAS + (15*8)] %asi 1823415Sgblack@eecs.umich.edu htog(0x81880000), //saved 1833415Sgblack@eecs.umich.edu htog(0x83F00000), //retry 1843415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1853415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1863415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1873415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1883415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1893415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1903415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1913415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1923415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1933415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1943415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1953415Sgblack@eecs.umich.edu htog(0x00000000), //illtrap 1963415Sgblack@eecs.umich.edu htog(0x00000000) //illtrap 1973415Sgblack@eecs.umich.edu}; 1983415Sgblack@eecs.umich.edu 1992561SN/Avoid 2002561SN/ASparcLiveProcess::argsInit(int intSize, int pageSize) 2012561SN/A{ 2022561SN/A Process::startup(); 2032474SN/A 2043044Sgblack@eecs.umich.edu string filename; 2053044Sgblack@eecs.umich.edu if(argv.size() < 1) 2063044Sgblack@eecs.umich.edu filename = ""; 2073044Sgblack@eecs.umich.edu else 2083044Sgblack@eecs.umich.edu filename = argv[0]; 2093044Sgblack@eecs.umich.edu 2102561SN/A Addr alignmentMask = ~(intSize - 1); 2112561SN/A 2122561SN/A // load object file into target memory 2132561SN/A objFile->loadSections(initVirtMem); 2142561SN/A 2152585SN/A //These are the auxilliary vector types 2162585SN/A enum auxTypes 2172585SN/A { 2182585SN/A SPARC_AT_HWCAP = 16, 2192585SN/A SPARC_AT_PAGESZ = 6, 2202585SN/A SPARC_AT_CLKTCK = 17, 2212585SN/A SPARC_AT_PHDR = 3, 2222585SN/A SPARC_AT_PHENT = 4, 2232585SN/A SPARC_AT_PHNUM = 5, 2242585SN/A SPARC_AT_BASE = 7, 2252585SN/A SPARC_AT_FLAGS = 8, 2262585SN/A SPARC_AT_ENTRY = 9, 2272585SN/A SPARC_AT_UID = 11, 2282585SN/A SPARC_AT_EUID = 12, 2292585SN/A SPARC_AT_GID = 13, 2302976Sgblack@eecs.umich.edu SPARC_AT_EGID = 14, 2312976Sgblack@eecs.umich.edu SPARC_AT_SECURE = 23 2322585SN/A }; 2332585SN/A 2342585SN/A enum hardwareCaps 2352585SN/A { 2362585SN/A M5_HWCAP_SPARC_FLUSH = 1, 2372585SN/A M5_HWCAP_SPARC_STBAR = 2, 2382585SN/A M5_HWCAP_SPARC_SWAP = 4, 2392585SN/A M5_HWCAP_SPARC_MULDIV = 8, 2402585SN/A M5_HWCAP_SPARC_V9 = 16, 2412585SN/A //This one should technically only be set 2422585SN/A //if there is a cheetah or cheetah_plus tlb, 2432585SN/A //but we'll use it all the time 2442585SN/A M5_HWCAP_SPARC_ULTRA3 = 32 2452585SN/A }; 2462585SN/A 2472585SN/A const int64_t hwcap = 2482585SN/A M5_HWCAP_SPARC_FLUSH | 2492585SN/A M5_HWCAP_SPARC_STBAR | 2502585SN/A M5_HWCAP_SPARC_SWAP | 2512585SN/A M5_HWCAP_SPARC_MULDIV | 2522585SN/A M5_HWCAP_SPARC_V9 | 2532585SN/A M5_HWCAP_SPARC_ULTRA3; 2542585SN/A 2552976Sgblack@eecs.umich.edu 2562976Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 2572976Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 2582976Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 2592976Sgblack@eecs.umich.edu if(elfObject) 2602976Sgblack@eecs.umich.edu { 2612976Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 2622976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_HWCAP, hwcap)); 2632976Sgblack@eecs.umich.edu //The system page size 2642976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_PAGESZ, SparcISA::VMPageSize)); 2652976Sgblack@eecs.umich.edu //Defined to be 100 in the kernel source. 2662976Sgblack@eecs.umich.edu //Frequency at which times() increments 2672976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_CLKTCK, 100)); 2682976Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 2692976Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 2702976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_PHDR, elfObject->programHeaderTable())); 2712976Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 2722976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_PHENT, elfObject->programHeaderSize())); 2732976Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 2742976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_PHNUM, elfObject->programHeaderCount())); 2752976Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 2762976Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 2772976Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 2782976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_BASE, 0)); 2792976Sgblack@eecs.umich.edu //This is hardwired to 0 in the elf loading code in the kernel 2802976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_FLAGS, 0)); 2812976Sgblack@eecs.umich.edu //The entry point to the program 2822976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_ENTRY, objFile->entryPoint())); 2832976Sgblack@eecs.umich.edu //Different user and group IDs 2843114Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_UID, uid())); 2853114Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_EUID, euid())); 2863114Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_GID, gid())); 2873114Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_EGID, egid())); 2882976Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 2892976Sgblack@eecs.umich.edu auxv.push_back(buildAuxVect(SPARC_AT_SECURE, 0)); 2902976Sgblack@eecs.umich.edu } 2912585SN/A 2922561SN/A //Figure out how big the initial stack needs to be 2932561SN/A 2943044Sgblack@eecs.umich.edu // The unaccounted for 0 at the top of the stack 2953044Sgblack@eecs.umich.edu int mysterious_size = intSize; 2963044Sgblack@eecs.umich.edu 2973044Sgblack@eecs.umich.edu //This is the name of the file which is present on the initial stack 2983044Sgblack@eecs.umich.edu //It's purpose is to let the user space linker examine the original file. 2993044Sgblack@eecs.umich.edu int file_name_size = filename.size() + 1; 3003044Sgblack@eecs.umich.edu 3012561SN/A int env_data_size = 0; 3022561SN/A for (int i = 0; i < envp.size(); ++i) { 3032561SN/A env_data_size += envp[i].size() + 1; 3042561SN/A } 3052561SN/A int arg_data_size = 0; 3062561SN/A for (int i = 0; i < argv.size(); ++i) { 3072561SN/A arg_data_size += argv[i].size() + 1; 3082561SN/A } 3092561SN/A 3103044Sgblack@eecs.umich.edu //The info_block needs to be padded so it's size is a multiple of the 3113044Sgblack@eecs.umich.edu //alignment mask. Also, it appears that there needs to be at least some 3123044Sgblack@eecs.umich.edu //padding, so if the size is already a multiple, we need to increase it 3133044Sgblack@eecs.umich.edu //anyway. 3143044Sgblack@eecs.umich.edu int info_block_size = 3153044Sgblack@eecs.umich.edu (file_name_size + 3163044Sgblack@eecs.umich.edu env_data_size + 3173044Sgblack@eecs.umich.edu arg_data_size + 3183044Sgblack@eecs.umich.edu intSize) & alignmentMask; 3193044Sgblack@eecs.umich.edu 3203044Sgblack@eecs.umich.edu int info_block_padding = 3213044Sgblack@eecs.umich.edu info_block_size - 3223044Sgblack@eecs.umich.edu file_name_size - 3233044Sgblack@eecs.umich.edu env_data_size - 3243044Sgblack@eecs.umich.edu arg_data_size; 3253044Sgblack@eecs.umich.edu 3263044Sgblack@eecs.umich.edu //Each auxilliary vector is two 8 byte words 3272561SN/A int aux_array_size = intSize * 2 * (auxv.size() + 1); 3282561SN/A 3293044Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 3302561SN/A int argv_array_size = intSize * (argv.size() + 1); 3312561SN/A 3322561SN/A int argc_size = intSize; 3332561SN/A int window_save_size = intSize * 16; 3342561SN/A 3352561SN/A int space_needed = 3363044Sgblack@eecs.umich.edu mysterious_size + 3372561SN/A info_block_size + 3382561SN/A aux_array_size + 3392561SN/A envp_array_size + 3402561SN/A argv_array_size + 3412561SN/A argc_size + 3422561SN/A window_save_size; 3432561SN/A 3442561SN/A stack_min = stack_base - space_needed; 3452561SN/A stack_min &= alignmentMask; 3462561SN/A stack_size = stack_base - stack_min; 3472561SN/A 3482561SN/A // map memory 3492561SN/A pTable->allocate(roundDown(stack_min, pageSize), 3502561SN/A roundUp(stack_size, pageSize)); 3512561SN/A 3522561SN/A // map out initial stack contents 3533044Sgblack@eecs.umich.edu Addr mysterious_base = stack_base - mysterious_size; 3543044Sgblack@eecs.umich.edu Addr file_name_base = mysterious_base - file_name_size; 3553044Sgblack@eecs.umich.edu Addr env_data_base = file_name_base - env_data_size; 3562561SN/A Addr arg_data_base = env_data_base - arg_data_size; 3573044Sgblack@eecs.umich.edu Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding; 3582585SN/A Addr envp_array_base = auxv_array_base - envp_array_size; 3592561SN/A Addr argv_array_base = envp_array_base - argv_array_size; 3602561SN/A Addr argc_base = argv_array_base - argc_size; 3613039Sstever@eecs.umich.edu#ifndef NDEBUG 3623039Sstever@eecs.umich.edu // only used in DPRINTF 3632561SN/A Addr window_save_base = argc_base - window_save_size; 3643039Sstever@eecs.umich.edu#endif 3652561SN/A 3662561SN/A DPRINTF(Sparc, "The addresses of items on the initial stack:\n"); 3673044Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - file name\n", file_name_base); 3682561SN/A DPRINTF(Sparc, "0x%x - env data\n", env_data_base); 3692561SN/A DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base); 3702585SN/A DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base); 3712585SN/A DPRINTF(Sparc, "0x%x - envp array\n", envp_array_base); 3722585SN/A DPRINTF(Sparc, "0x%x - argv array\n", argv_array_base); 3732561SN/A DPRINTF(Sparc, "0x%x - argc \n", argc_base); 3742561SN/A DPRINTF(Sparc, "0x%x - window save\n", window_save_base); 3752561SN/A DPRINTF(Sparc, "0x%x - stack min\n", stack_min); 3762561SN/A 3772561SN/A // write contents to stack 3783044Sgblack@eecs.umich.edu 3793044Sgblack@eecs.umich.edu // figure out argc 3802561SN/A uint64_t argc = argv.size(); 3812585SN/A uint64_t guestArgc = TheISA::htog(argc); 3822561SN/A 3833044Sgblack@eecs.umich.edu //Write out the mysterious 0 3843044Sgblack@eecs.umich.edu uint64_t mysterious_zero = 0; 3853044Sgblack@eecs.umich.edu initVirtMem->writeBlob(mysterious_base, 3863044Sgblack@eecs.umich.edu (uint8_t*)&mysterious_zero, mysterious_size); 3873044Sgblack@eecs.umich.edu 3883044Sgblack@eecs.umich.edu //Write the file name 3893044Sgblack@eecs.umich.edu initVirtMem->writeString(file_name_base, filename.c_str()); 3903044Sgblack@eecs.umich.edu 3912585SN/A //Copy the aux stuff 3922585SN/A for(int x = 0; x < auxv.size(); x++) 3932585SN/A { 3942585SN/A initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 3952585SN/A (uint8_t*)&(auxv[x].a_type), intSize); 3962585SN/A initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 3972585SN/A (uint8_t*)&(auxv[x].a_val), intSize); 3982585SN/A } 3992585SN/A //Write out the terminating zeroed auxilliary vector 4002561SN/A const uint64_t zero = 0; 4012585SN/A initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 4022585SN/A (uint8_t*)&zero, 2 * intSize); 4032561SN/A 4042561SN/A copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 4052561SN/A copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 4062561SN/A 4072585SN/A initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 4082561SN/A 4093415Sgblack@eecs.umich.edu //Stuff the trap handlers into the processes address space. 4103415Sgblack@eecs.umich.edu //Since the stack grows down and is the highest area in the processes 4113415Sgblack@eecs.umich.edu //address space, we can put stuff above it and stay out of the way. 4123415Sgblack@eecs.umich.edu int fillSize = sizeof(MachInst) * numFillInsts; 4133415Sgblack@eecs.umich.edu int spillSize = sizeof(MachInst) * numSpillInsts; 4143415Sgblack@eecs.umich.edu fillStart = stack_base; 4153415Sgblack@eecs.umich.edu spillStart = fillStart + fillSize; 4163415Sgblack@eecs.umich.edu initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler, fillSize); 4173415Sgblack@eecs.umich.edu initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler, spillSize); 4183415Sgblack@eecs.umich.edu 4193415Sgblack@eecs.umich.edu //Set up the thread context to start running the process 4202680Sktlim@umich.edu threadContexts[0]->setIntReg(ArgumentReg0, argc); 4212680Sktlim@umich.edu threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base); 4222680Sktlim@umich.edu threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias); 4232561SN/A 4242561SN/A Addr prog_entry = objFile->entryPoint(); 4252680Sktlim@umich.edu threadContexts[0]->setPC(prog_entry); 4262680Sktlim@umich.edu threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 4272680Sktlim@umich.edu threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 4282561SN/A 4292561SN/A// num_processes++; 4302561SN/A} 431