process.cc revision 5285
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" 334111Sgblack@eecs.umich.edu#include "arch/sparc/handlers.hh" 342474SN/A#include "arch/sparc/isa_traits.hh" 352207SN/A#include "arch/sparc/process.hh" 363760Sgblack@eecs.umich.edu#include "arch/sparc/types.hh" 372454SN/A#include "base/loader/object_file.hh" 382976Sgblack@eecs.umich.edu#include "base/loader/elf_object.hh" 392454SN/A#include "base/misc.hh" 402680Sktlim@umich.edu#include "cpu/thread_context.hh" 412561SN/A#include "mem/page_table.hh" 424434Ssaidi@eecs.umich.edu#include "sim/process_impl.hh" 432561SN/A#include "mem/translating_port.hh" 442474SN/A#include "sim/system.hh" 452207SN/A 462458SN/Ausing namespace std; 472474SN/Ausing namespace SparcISA; 482458SN/A 492207SN/A 505154Sgblack@eecs.umich.eduSparcLiveProcess::SparcLiveProcess(LiveProcessParams * params, 515285Sgblack@eecs.umich.edu ObjectFile *objFile, Addr _StackBias) 525285Sgblack@eecs.umich.edu : LiveProcess(params, objFile), StackBias(_StackBias) 532474SN/A{ 542474SN/A 552474SN/A // XXX all the below need to be updated for SPARC - Ali 562474SN/A brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 572474SN/A brk_point = roundUp(brk_point, VMPageSize); 582474SN/A 592474SN/A // Set pointer for next thread stack. Reserve 8M for main stack. 602474SN/A next_thread_stack_base = stack_base - (8 * 1024 * 1024); 613415Sgblack@eecs.umich.edu 623415Sgblack@eecs.umich.edu //Initialize these to 0s 633415Sgblack@eecs.umich.edu fillStart = 0; 643415Sgblack@eecs.umich.edu spillStart = 0; 652474SN/A} 662474SN/A 674111Sgblack@eecs.umich.eduvoid SparcLiveProcess::handleTrap(int trapNum, ThreadContext *tc) 684111Sgblack@eecs.umich.edu{ 694111Sgblack@eecs.umich.edu switch(trapNum) 704111Sgblack@eecs.umich.edu { 715128Sgblack@eecs.umich.edu case 0x01: //Software breakpoint 725128Sgblack@eecs.umich.edu warn("Software breakpoint encountered at pc %#x.\n", tc->readPC()); 735128Sgblack@eecs.umich.edu break; 745128Sgblack@eecs.umich.edu case 0x02: //Division by zero 755128Sgblack@eecs.umich.edu warn("Software signaled a division by zero at pc %#x.\n", 765128Sgblack@eecs.umich.edu tc->readPC()); 775128Sgblack@eecs.umich.edu break; 784111Sgblack@eecs.umich.edu case 0x03: //Flush window trap 795128Sgblack@eecs.umich.edu flushWindows(tc); 805128Sgblack@eecs.umich.edu break; 815128Sgblack@eecs.umich.edu case 0x04: //Clean windows 825128Sgblack@eecs.umich.edu warn("Ignoring process request for clean register " 835128Sgblack@eecs.umich.edu "windows at pc %#x.\n", tc->readPC()); 845128Sgblack@eecs.umich.edu break; 855128Sgblack@eecs.umich.edu case 0x05: //Range check 865128Sgblack@eecs.umich.edu warn("Software signaled a range check at pc %#x.\n", 875128Sgblack@eecs.umich.edu tc->readPC()); 885128Sgblack@eecs.umich.edu break; 895128Sgblack@eecs.umich.edu case 0x06: //Fix alignment 905128Sgblack@eecs.umich.edu warn("Ignoring process request for os assisted unaligned accesses " 915128Sgblack@eecs.umich.edu "at pc %#x.\n", tc->readPC()); 925128Sgblack@eecs.umich.edu break; 935128Sgblack@eecs.umich.edu case 0x07: //Integer overflow 945128Sgblack@eecs.umich.edu warn("Software signaled an integer overflow at pc %#x.\n", 955128Sgblack@eecs.umich.edu tc->readPC()); 965128Sgblack@eecs.umich.edu break; 975128Sgblack@eecs.umich.edu case 0x32: //Get integer condition codes 985128Sgblack@eecs.umich.edu warn("Ignoring process request to get the integer condition codes " 995128Sgblack@eecs.umich.edu "at pc %#x.\n", tc->readPC()); 1005128Sgblack@eecs.umich.edu break; 1015128Sgblack@eecs.umich.edu case 0x33: //Set integer condition codes 1025128Sgblack@eecs.umich.edu warn("Ignoring process request to set the integer condition codes " 1035128Sgblack@eecs.umich.edu "at pc %#x.\n", tc->readPC()); 1044111Sgblack@eecs.umich.edu break; 1054111Sgblack@eecs.umich.edu default: 1064111Sgblack@eecs.umich.edu panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum); 1074111Sgblack@eecs.umich.edu } 1084111Sgblack@eecs.umich.edu} 1094111Sgblack@eecs.umich.edu 1102474SN/Avoid 1115285Sgblack@eecs.umich.eduSparcLiveProcess::startup() 1124111Sgblack@eecs.umich.edu{ 1135285Sgblack@eecs.umich.edu Process::startup(); 1144111Sgblack@eecs.umich.edu 1154111Sgblack@eecs.umich.edu //From the SPARC ABI 1164111Sgblack@eecs.umich.edu 1172646Ssaidi@eecs.umich.edu //Setup default FP state 1184172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0); 1192646Ssaidi@eecs.umich.edu 1204172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_TICK, 0); 1214997Sgblack@eecs.umich.edu 1222561SN/A /* 1232561SN/A * Register window management registers 1242561SN/A */ 1252561SN/A 1262561SN/A //No windows contain info from other programs 1274172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0); 1283761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0); 1292561SN/A //There are no windows to pop 1304172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0); 1313761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0); 1322561SN/A //All windows are available to save into 1334172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2); 1343761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2); 1352561SN/A //All windows are "clean" 1364172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows); 1373761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows); 1382561SN/A //Start with register window 0 1394172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_CWP, 0); 1403415Sgblack@eecs.umich.edu //Always use spill and fill traps 0 1414172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0); 1423761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0); 1433415Sgblack@eecs.umich.edu //Set the trap level to 0 1444172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_TL, 0); 1453589Sgblack@eecs.umich.edu //Set the ASI register to something fixed 1464172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY); 1474997Sgblack@eecs.umich.edu 1484997Sgblack@eecs.umich.edu /* 1494997Sgblack@eecs.umich.edu * T1 specific registers 1504997Sgblack@eecs.umich.edu */ 1514997Sgblack@eecs.umich.edu //Turn on the icache, dcache, dtb translation, and itb translation. 1524997Sgblack@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 15); 1532474SN/A} 1542474SN/A 1555285Sgblack@eecs.umich.eduvoid 1565285Sgblack@eecs.umich.eduSparc32LiveProcess::startup() 1572585SN/A{ 1585285Sgblack@eecs.umich.edu if (checkpointRestored) 1595285Sgblack@eecs.umich.edu return; 1602585SN/A 1615285Sgblack@eecs.umich.edu SparcLiveProcess::startup(); 1625285Sgblack@eecs.umich.edu 1635285Sgblack@eecs.umich.edu //The process runs in user mode with 32 bit addresses 1645285Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x0a); 1655285Sgblack@eecs.umich.edu 1665285Sgblack@eecs.umich.edu argsInit(32 / 8, VMPageSize); 1674111Sgblack@eecs.umich.edu} 1683415Sgblack@eecs.umich.edu 1692561SN/Avoid 1705285Sgblack@eecs.umich.eduSparc64LiveProcess::startup() 1712561SN/A{ 1725285Sgblack@eecs.umich.edu if (checkpointRestored) 1735285Sgblack@eecs.umich.edu return; 1745285Sgblack@eecs.umich.edu 1755285Sgblack@eecs.umich.edu SparcLiveProcess::startup(); 1765285Sgblack@eecs.umich.edu 1775285Sgblack@eecs.umich.edu //The process runs in user mode 1785285Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x02); 1795285Sgblack@eecs.umich.edu 1805285Sgblack@eecs.umich.edu argsInit(sizeof(IntReg), VMPageSize); 1815285Sgblack@eecs.umich.edu} 1825285Sgblack@eecs.umich.edu 1835285Sgblack@eecs.umich.edutemplate<class IntType> 1845285Sgblack@eecs.umich.eduvoid 1855285Sgblack@eecs.umich.eduSparcLiveProcess::argsInit(int pageSize) 1865285Sgblack@eecs.umich.edu{ 1875285Sgblack@eecs.umich.edu int intSize = sizeof(IntType); 1885285Sgblack@eecs.umich.edu 1895285Sgblack@eecs.umich.edu typedef M5_auxv_t<IntType> auxv_t; 1905285Sgblack@eecs.umich.edu 1915285Sgblack@eecs.umich.edu std::vector<auxv_t> auxv; 1922474SN/A 1933044Sgblack@eecs.umich.edu string filename; 1943044Sgblack@eecs.umich.edu if(argv.size() < 1) 1953044Sgblack@eecs.umich.edu filename = ""; 1963044Sgblack@eecs.umich.edu else 1973044Sgblack@eecs.umich.edu filename = argv[0]; 1983044Sgblack@eecs.umich.edu 1995285Sgblack@eecs.umich.edu //Even for a 32 bit process, the ABI says we still need to 2005285Sgblack@eecs.umich.edu //maintain double word alignment of the stack pointer. 2015285Sgblack@eecs.umich.edu Addr alignmentMask = ~(sizeof(uint64_t) - 1); 2022561SN/A 2032561SN/A // load object file into target memory 2042561SN/A objFile->loadSections(initVirtMem); 2052561SN/A 2062585SN/A enum hardwareCaps 2072585SN/A { 2082585SN/A M5_HWCAP_SPARC_FLUSH = 1, 2092585SN/A M5_HWCAP_SPARC_STBAR = 2, 2102585SN/A M5_HWCAP_SPARC_SWAP = 4, 2112585SN/A M5_HWCAP_SPARC_MULDIV = 8, 2122585SN/A M5_HWCAP_SPARC_V9 = 16, 2132585SN/A //This one should technically only be set 2142585SN/A //if there is a cheetah or cheetah_plus tlb, 2152585SN/A //but we'll use it all the time 2162585SN/A M5_HWCAP_SPARC_ULTRA3 = 32 2172585SN/A }; 2182585SN/A 2192585SN/A const int64_t hwcap = 2202585SN/A M5_HWCAP_SPARC_FLUSH | 2212585SN/A M5_HWCAP_SPARC_STBAR | 2222585SN/A M5_HWCAP_SPARC_SWAP | 2232585SN/A M5_HWCAP_SPARC_MULDIV | 2242585SN/A M5_HWCAP_SPARC_V9 | 2252585SN/A M5_HWCAP_SPARC_ULTRA3; 2262585SN/A 2272976Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 2282976Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 2292976Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 2302976Sgblack@eecs.umich.edu if(elfObject) 2312976Sgblack@eecs.umich.edu { 2322976Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 2334793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_HWCAP, hwcap)); 2342976Sgblack@eecs.umich.edu //The system page size 2354793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PAGESZ, SparcISA::VMPageSize)); 2362976Sgblack@eecs.umich.edu //Defined to be 100 in the kernel source. 2372976Sgblack@eecs.umich.edu //Frequency at which times() increments 2384793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_CLKTCK, 100)); 2392976Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 2402976Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 2414793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable())); 2422976Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 2434793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize())); 2442976Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 2454793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount())); 2462976Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 2472976Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 2482976Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 2494793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_BASE, 0)); 2502976Sgblack@eecs.umich.edu //This is hardwired to 0 in the elf loading code in the kernel 2514793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_FLAGS, 0)); 2522976Sgblack@eecs.umich.edu //The entry point to the program 2534793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint())); 2542976Sgblack@eecs.umich.edu //Different user and group IDs 2554793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_UID, uid())); 2564793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EUID, euid())); 2574793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_GID, gid())); 2584793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EGID, egid())); 2592976Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 2604793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_SECURE, 0)); 2612976Sgblack@eecs.umich.edu } 2622585SN/A 2632561SN/A //Figure out how big the initial stack needs to be 2642561SN/A 2654164Sgblack@eecs.umich.edu // The unaccounted for 8 byte 0 at the top of the stack 2664164Sgblack@eecs.umich.edu int mysterious_size = 8; 2674111Sgblack@eecs.umich.edu 2684111Sgblack@eecs.umich.edu //This is the name of the file which is present on the initial stack 2694111Sgblack@eecs.umich.edu //It's purpose is to let the user space linker examine the original file. 2704111Sgblack@eecs.umich.edu int file_name_size = filename.size() + 1; 2714111Sgblack@eecs.umich.edu 2724111Sgblack@eecs.umich.edu int env_data_size = 0; 2734111Sgblack@eecs.umich.edu for (int i = 0; i < envp.size(); ++i) { 2744111Sgblack@eecs.umich.edu env_data_size += envp[i].size() + 1; 2754111Sgblack@eecs.umich.edu } 2764111Sgblack@eecs.umich.edu int arg_data_size = 0; 2774111Sgblack@eecs.umich.edu for (int i = 0; i < argv.size(); ++i) { 2784111Sgblack@eecs.umich.edu arg_data_size += argv[i].size() + 1; 2794111Sgblack@eecs.umich.edu } 2804111Sgblack@eecs.umich.edu 2814164Sgblack@eecs.umich.edu //The info_block - This seems to need an pad for some reason. 2824111Sgblack@eecs.umich.edu int info_block_size = 2834164Sgblack@eecs.umich.edu (mysterious_size + 2844164Sgblack@eecs.umich.edu file_name_size + 2854111Sgblack@eecs.umich.edu env_data_size + 2864164Sgblack@eecs.umich.edu arg_data_size + intSize); 2874111Sgblack@eecs.umich.edu 2885285Sgblack@eecs.umich.edu //Each auxilliary vector is two words 2894111Sgblack@eecs.umich.edu int aux_array_size = intSize * 2 * (auxv.size() + 1); 2904111Sgblack@eecs.umich.edu 2914111Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 2924111Sgblack@eecs.umich.edu int argv_array_size = intSize * (argv.size() + 1); 2934111Sgblack@eecs.umich.edu 2944111Sgblack@eecs.umich.edu int argc_size = intSize; 2954111Sgblack@eecs.umich.edu int window_save_size = intSize * 16; 2964111Sgblack@eecs.umich.edu 2974111Sgblack@eecs.umich.edu int space_needed = 2984164Sgblack@eecs.umich.edu info_block_size + 2994111Sgblack@eecs.umich.edu aux_array_size + 3004111Sgblack@eecs.umich.edu envp_array_size + 3014111Sgblack@eecs.umich.edu argv_array_size + 3024111Sgblack@eecs.umich.edu argc_size + 3034111Sgblack@eecs.umich.edu window_save_size; 3044111Sgblack@eecs.umich.edu 3054111Sgblack@eecs.umich.edu stack_min = stack_base - space_needed; 3064111Sgblack@eecs.umich.edu stack_min &= alignmentMask; 3074111Sgblack@eecs.umich.edu stack_size = stack_base - stack_min; 3084111Sgblack@eecs.umich.edu 3095285Sgblack@eecs.umich.edu // Allocate space for the stack 3104111Sgblack@eecs.umich.edu pTable->allocate(roundDown(stack_min, pageSize), 3114111Sgblack@eecs.umich.edu roundUp(stack_size, pageSize)); 3124111Sgblack@eecs.umich.edu 3134111Sgblack@eecs.umich.edu // map out initial stack contents 3145285Sgblack@eecs.umich.edu IntType window_save_base = stack_min; 3155285Sgblack@eecs.umich.edu IntType argc_base = window_save_base + window_save_size; 3165285Sgblack@eecs.umich.edu IntType argv_array_base = argc_base + argc_size; 3175285Sgblack@eecs.umich.edu IntType envp_array_base = argv_array_base + argv_array_size; 3185285Sgblack@eecs.umich.edu IntType auxv_array_base = envp_array_base + envp_array_size; 3194117Sgblack@eecs.umich.edu //The info block is pushed up against the top of the stack, while 3204117Sgblack@eecs.umich.edu //the rest of the initial stack frame is aligned to an 8 byte boudary. 3215285Sgblack@eecs.umich.edu IntType arg_data_base = stack_base - info_block_size + intSize; 3225285Sgblack@eecs.umich.edu IntType env_data_base = arg_data_base + arg_data_size; 3235285Sgblack@eecs.umich.edu IntType file_name_base = env_data_base + env_data_size; 3245285Sgblack@eecs.umich.edu IntType mysterious_base = file_name_base + file_name_size; 3254111Sgblack@eecs.umich.edu 3264111Sgblack@eecs.umich.edu DPRINTF(Sparc, "The addresses of items on the initial stack:\n"); 3275285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - file name\n", file_name_base); 3285285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - env data\n", env_data_base); 3295285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - arg data\n", arg_data_base); 3305285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - auxv array\n", auxv_array_base); 3315285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - envp array\n", envp_array_base); 3325285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - argv array\n", argv_array_base); 3335285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - argc \n", argc_base); 3345285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - window save\n", window_save_base); 3355285Sgblack@eecs.umich.edu DPRINTF(Sparc, "%#x - stack min\n", stack_min); 3364111Sgblack@eecs.umich.edu 3374111Sgblack@eecs.umich.edu // write contents to stack 3384111Sgblack@eecs.umich.edu 3394111Sgblack@eecs.umich.edu // figure out argc 3405285Sgblack@eecs.umich.edu IntType argc = argv.size(); 3415285Sgblack@eecs.umich.edu IntType guestArgc = TheISA::htog(argc); 3424111Sgblack@eecs.umich.edu 3434111Sgblack@eecs.umich.edu //Write out the mysterious 0 3444111Sgblack@eecs.umich.edu uint64_t mysterious_zero = 0; 3454111Sgblack@eecs.umich.edu initVirtMem->writeBlob(mysterious_base, 3464111Sgblack@eecs.umich.edu (uint8_t*)&mysterious_zero, mysterious_size); 3474111Sgblack@eecs.umich.edu 3484111Sgblack@eecs.umich.edu //Write the file name 3494111Sgblack@eecs.umich.edu initVirtMem->writeString(file_name_base, filename.c_str()); 3504111Sgblack@eecs.umich.edu 3514111Sgblack@eecs.umich.edu //Copy the aux stuff 3524111Sgblack@eecs.umich.edu for(int x = 0; x < auxv.size(); x++) 3534111Sgblack@eecs.umich.edu { 3544111Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 3554111Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_type), intSize); 3564111Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 3574111Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_val), intSize); 3584111Sgblack@eecs.umich.edu } 3595285Sgblack@eecs.umich.edu 3604111Sgblack@eecs.umich.edu //Write out the terminating zeroed auxilliary vector 3615285Sgblack@eecs.umich.edu const IntType zero = 0; 3624111Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 3634111Sgblack@eecs.umich.edu (uint8_t*)&zero, 2 * intSize); 3644111Sgblack@eecs.umich.edu 3654117Sgblack@eecs.umich.edu copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 3664117Sgblack@eecs.umich.edu copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 3674111Sgblack@eecs.umich.edu 3684111Sgblack@eecs.umich.edu initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 3694111Sgblack@eecs.umich.edu 3705285Sgblack@eecs.umich.edu //Set up space for the trap handlers into the processes address space. 3715285Sgblack@eecs.umich.edu //Since the stack grows down and there is reserved address space abov 3725285Sgblack@eecs.umich.edu //it, we can put stuff above it and stay out of the way. 3734111Sgblack@eecs.umich.edu fillStart = stack_base; 3745285Sgblack@eecs.umich.edu spillStart = fillStart + sizeof(MachInst) * numFillInsts; 3754111Sgblack@eecs.umich.edu 3764111Sgblack@eecs.umich.edu //Set up the thread context to start running the process 3774772Sgblack@eecs.umich.edu //assert(NumArgumentRegs >= 2); 3784772Sgblack@eecs.umich.edu //threadContexts[0]->setIntReg(ArgumentReg[0], argc); 3794772Sgblack@eecs.umich.edu //threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base); 3805285Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias); 3814111Sgblack@eecs.umich.edu 3825231Sgblack@eecs.umich.edu // %g1 is a pointer to a function that should be run at exit. Since we 3835231Sgblack@eecs.umich.edu // don't have anything like that, it should be set to 0. 3845231Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(1, 0); 3855231Sgblack@eecs.umich.edu 3865285Sgblack@eecs.umich.edu Addr prog_entry = objFile->entryPoint(); 3874111Sgblack@eecs.umich.edu threadContexts[0]->setPC(prog_entry); 3884111Sgblack@eecs.umich.edu threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 3894111Sgblack@eecs.umich.edu threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 3904111Sgblack@eecs.umich.edu 3914111Sgblack@eecs.umich.edu //Align the "stack_min" to a page boundary. 3924111Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, pageSize); 3934111Sgblack@eecs.umich.edu 3944111Sgblack@eecs.umich.edu// num_processes++; 3954111Sgblack@eecs.umich.edu} 3965128Sgblack@eecs.umich.edu 3975285Sgblack@eecs.umich.eduvoid 3985285Sgblack@eecs.umich.eduSparc64LiveProcess::argsInit(int intSize, int pageSize) 3995285Sgblack@eecs.umich.edu{ 4005285Sgblack@eecs.umich.edu SparcLiveProcess::argsInit<uint64_t>(pageSize); 4015285Sgblack@eecs.umich.edu 4025285Sgblack@eecs.umich.edu // Stuff the trap handlers into the process address space 4035285Sgblack@eecs.umich.edu initVirtMem->writeBlob(fillStart, 4045285Sgblack@eecs.umich.edu (uint8_t*)fillHandler64, sizeof(MachInst) * numFillInsts); 4055285Sgblack@eecs.umich.edu initVirtMem->writeBlob(spillStart, 4065285Sgblack@eecs.umich.edu (uint8_t*)spillHandler64, sizeof(MachInst) * numSpillInsts); 4075285Sgblack@eecs.umich.edu} 4085285Sgblack@eecs.umich.edu 4095285Sgblack@eecs.umich.eduvoid 4105285Sgblack@eecs.umich.eduSparc32LiveProcess::argsInit(int intSize, int pageSize) 4115285Sgblack@eecs.umich.edu{ 4125285Sgblack@eecs.umich.edu SparcLiveProcess::argsInit<uint32_t>(pageSize); 4135285Sgblack@eecs.umich.edu 4145285Sgblack@eecs.umich.edu // Stuff the trap handlers into the process address space 4155285Sgblack@eecs.umich.edu initVirtMem->writeBlob(fillStart, 4165285Sgblack@eecs.umich.edu (uint8_t*)fillHandler32, sizeof(MachInst) * numFillInsts); 4175285Sgblack@eecs.umich.edu initVirtMem->writeBlob(spillStart, 4185285Sgblack@eecs.umich.edu (uint8_t*)spillHandler32, sizeof(MachInst) * numSpillInsts); 4195285Sgblack@eecs.umich.edu} 4205285Sgblack@eecs.umich.edu 4215128Sgblack@eecs.umich.eduvoid Sparc32LiveProcess::flushWindows(ThreadContext *tc) 4225128Sgblack@eecs.umich.edu{ 4235128Sgblack@eecs.umich.edu IntReg Cansave = tc->readIntReg(NumIntArchRegs + 3); 4245128Sgblack@eecs.umich.edu IntReg Canrestore = tc->readIntReg(NumIntArchRegs + 4); 4255128Sgblack@eecs.umich.edu IntReg Otherwin = tc->readIntReg(NumIntArchRegs + 6); 4265128Sgblack@eecs.umich.edu MiscReg CWP = tc->readMiscReg(MISCREG_CWP); 4275128Sgblack@eecs.umich.edu MiscReg origCWP = CWP; 4285128Sgblack@eecs.umich.edu CWP = (CWP + Cansave + 2) % NWindows; 4295128Sgblack@eecs.umich.edu while(NWindows - 2 - Cansave != 0) 4305128Sgblack@eecs.umich.edu { 4315128Sgblack@eecs.umich.edu if (Otherwin) { 4325128Sgblack@eecs.umich.edu panic("Otherwin non-zero.\n"); 4335128Sgblack@eecs.umich.edu } else { 4345128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, CWP); 4355128Sgblack@eecs.umich.edu //Do the stores 4365128Sgblack@eecs.umich.edu IntReg sp = tc->readIntReg(StackPointerReg); 4375128Sgblack@eecs.umich.edu for (int index = 16; index < 32; index++) { 4385128Sgblack@eecs.umich.edu IntReg regVal = tc->readIntReg(index); 4395128Sgblack@eecs.umich.edu regVal = htog(regVal); 4405128Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryWriteBlob( 4415128Sgblack@eecs.umich.edu sp + (index - 16) * 4, (uint8_t *)®Val, 4)) { 4425128Sgblack@eecs.umich.edu warn("Failed to save register to the stack when " 4435128Sgblack@eecs.umich.edu "flushing windows.\n"); 4445128Sgblack@eecs.umich.edu } 4455128Sgblack@eecs.umich.edu } 4465128Sgblack@eecs.umich.edu Canrestore--; 4475128Sgblack@eecs.umich.edu Cansave++; 4485128Sgblack@eecs.umich.edu CWP = (CWP + 1) % NWindows; 4495128Sgblack@eecs.umich.edu } 4505128Sgblack@eecs.umich.edu } 4515128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 3, Cansave); 4525128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 4, Canrestore); 4535128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, origCWP); 4545128Sgblack@eecs.umich.edu} 4555128Sgblack@eecs.umich.edu 4565128Sgblack@eecs.umich.eduvoid Sparc64LiveProcess::flushWindows(ThreadContext *tc) 4575128Sgblack@eecs.umich.edu{ 4585128Sgblack@eecs.umich.edu IntReg Cansave = tc->readIntReg(NumIntArchRegs + 3); 4595128Sgblack@eecs.umich.edu IntReg Canrestore = tc->readIntReg(NumIntArchRegs + 4); 4605128Sgblack@eecs.umich.edu IntReg Otherwin = tc->readIntReg(NumIntArchRegs + 6); 4615128Sgblack@eecs.umich.edu MiscReg CWP = tc->readMiscReg(MISCREG_CWP); 4625128Sgblack@eecs.umich.edu MiscReg origCWP = CWP; 4635128Sgblack@eecs.umich.edu CWP = (CWP + Cansave + 2) % NWindows; 4645128Sgblack@eecs.umich.edu while(NWindows - 2 - Cansave != 0) 4655128Sgblack@eecs.umich.edu { 4665128Sgblack@eecs.umich.edu if (Otherwin) { 4675128Sgblack@eecs.umich.edu panic("Otherwin non-zero.\n"); 4685128Sgblack@eecs.umich.edu } else { 4695128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, CWP); 4705128Sgblack@eecs.umich.edu //Do the stores 4715128Sgblack@eecs.umich.edu IntReg sp = tc->readIntReg(StackPointerReg); 4725128Sgblack@eecs.umich.edu for (int index = 16; index < 32; index++) { 4735128Sgblack@eecs.umich.edu IntReg regVal = tc->readIntReg(index); 4745128Sgblack@eecs.umich.edu regVal = htog(regVal); 4755128Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryWriteBlob( 4765128Sgblack@eecs.umich.edu sp + 2047 + (index - 16) * 8, (uint8_t *)®Val, 8)) { 4775128Sgblack@eecs.umich.edu warn("Failed to save register to the stack when " 4785128Sgblack@eecs.umich.edu "flushing windows.\n"); 4795128Sgblack@eecs.umich.edu } 4805128Sgblack@eecs.umich.edu } 4815128Sgblack@eecs.umich.edu Canrestore--; 4825128Sgblack@eecs.umich.edu Cansave++; 4835128Sgblack@eecs.umich.edu CWP = (CWP + 1) % NWindows; 4845128Sgblack@eecs.umich.edu } 4855128Sgblack@eecs.umich.edu } 4865128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 3, Cansave); 4875128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 4, Canrestore); 4885128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, origCWP); 4895128Sgblack@eecs.umich.edu} 490