process.cc revision 5154
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, 515154Sgblack@eecs.umich.edu ObjectFile *objFile) 525154Sgblack@eecs.umich.edu : LiveProcess(params, objFile) 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 1114111Sgblack@eecs.umich.eduSparc32LiveProcess::startup() 1124111Sgblack@eecs.umich.edu{ 1134111Sgblack@eecs.umich.edu argsInit(32 / 8, VMPageSize); 1144111Sgblack@eecs.umich.edu 1154111Sgblack@eecs.umich.edu //From the SPARC ABI 1164111Sgblack@eecs.umich.edu 1174648Sgblack@eecs.umich.edu //The process runs in user mode with 32 bit addresses 1184648Sgblack@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x0a); 1194111Sgblack@eecs.umich.edu 1204111Sgblack@eecs.umich.edu //Setup default FP state 1214172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0); 1224111Sgblack@eecs.umich.edu 1234172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_TICK, 0); 1244111Sgblack@eecs.umich.edu // 1254111Sgblack@eecs.umich.edu /* 1264111Sgblack@eecs.umich.edu * Register window management registers 1274111Sgblack@eecs.umich.edu */ 1284111Sgblack@eecs.umich.edu 1294111Sgblack@eecs.umich.edu //No windows contain info from other programs 1304172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0); 1314111Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0); 1324111Sgblack@eecs.umich.edu //There are no windows to pop 1334172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0); 1344111Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0); 1354111Sgblack@eecs.umich.edu //All windows are available to save into 1364172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2); 1374111Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2); 1384111Sgblack@eecs.umich.edu //All windows are "clean" 1394172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows); 1404111Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows); 1414111Sgblack@eecs.umich.edu //Start with register window 0 1424172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_CWP, 0); 1434111Sgblack@eecs.umich.edu //Always use spill and fill traps 0 1444172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0); 1454111Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0); 1464111Sgblack@eecs.umich.edu //Set the trap level to 0 1474172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_TL, 0); 1484111Sgblack@eecs.umich.edu //Set the ASI register to something fixed 1494172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY); 1504997Sgblack@eecs.umich.edu 1514997Sgblack@eecs.umich.edu /* 1524997Sgblack@eecs.umich.edu * T1 specific registers 1534997Sgblack@eecs.umich.edu */ 1544997Sgblack@eecs.umich.edu //Turn on the icache, dcache, dtb translation, and itb translation. 1554997Sgblack@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 15); 1564111Sgblack@eecs.umich.edu} 1574111Sgblack@eecs.umich.edu 1584111Sgblack@eecs.umich.eduvoid 1594111Sgblack@eecs.umich.eduSparc64LiveProcess::startup() 1602474SN/A{ 1613760Sgblack@eecs.umich.edu argsInit(sizeof(IntReg), VMPageSize); 1622561SN/A 1632561SN/A //From the SPARC ABI 1642561SN/A 1652561SN/A //The process runs in user mode 1664172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x02); 1672561SN/A 1682646Ssaidi@eecs.umich.edu //Setup default FP state 1694172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0); 1702646Ssaidi@eecs.umich.edu 1714172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_TICK, 0); 1724997Sgblack@eecs.umich.edu 1732561SN/A /* 1742561SN/A * Register window management registers 1752561SN/A */ 1762561SN/A 1772561SN/A //No windows contain info from other programs 1784172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0); 1793761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0); 1802561SN/A //There are no windows to pop 1814172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0); 1823761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0); 1832561SN/A //All windows are available to save into 1844172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2); 1853761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2); 1862561SN/A //All windows are "clean" 1874172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows); 1883761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows); 1892561SN/A //Start with register window 0 1904172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_CWP, 0); 1913415Sgblack@eecs.umich.edu //Always use spill and fill traps 0 1924172Ssaidi@eecs.umich.edu //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0); 1933761Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0); 1943415Sgblack@eecs.umich.edu //Set the trap level to 0 1954172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_TL, 0); 1963589Sgblack@eecs.umich.edu //Set the ASI register to something fixed 1974172Ssaidi@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY); 1984997Sgblack@eecs.umich.edu 1994997Sgblack@eecs.umich.edu /* 2004997Sgblack@eecs.umich.edu * T1 specific registers 2014997Sgblack@eecs.umich.edu */ 2024997Sgblack@eecs.umich.edu //Turn on the icache, dcache, dtb translation, and itb translation. 2034997Sgblack@eecs.umich.edu threadContexts[0]->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 15); 2042474SN/A} 2052474SN/A 2064111Sgblack@eecs.umich.eduM5_32_auxv_t::M5_32_auxv_t(int32_t type, int32_t val) 2072585SN/A{ 2084111Sgblack@eecs.umich.edu a_type = TheISA::htog(type); 2094111Sgblack@eecs.umich.edu a_val = TheISA::htog(val); 2102585SN/A} 2112585SN/A 2124111Sgblack@eecs.umich.eduM5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val) 2133415Sgblack@eecs.umich.edu{ 2144111Sgblack@eecs.umich.edu a_type = TheISA::htog(type); 2154111Sgblack@eecs.umich.edu a_val = TheISA::htog(val); 2164111Sgblack@eecs.umich.edu} 2173415Sgblack@eecs.umich.edu 2182561SN/Avoid 2194111Sgblack@eecs.umich.eduSparc64LiveProcess::argsInit(int intSize, int pageSize) 2202561SN/A{ 2214111Sgblack@eecs.umich.edu typedef M5_64_auxv_t auxv_t; 2222561SN/A Process::startup(); 2232474SN/A 2243044Sgblack@eecs.umich.edu string filename; 2253044Sgblack@eecs.umich.edu if(argv.size() < 1) 2263044Sgblack@eecs.umich.edu filename = ""; 2273044Sgblack@eecs.umich.edu else 2283044Sgblack@eecs.umich.edu filename = argv[0]; 2293044Sgblack@eecs.umich.edu 2302561SN/A Addr alignmentMask = ~(intSize - 1); 2312561SN/A 2322561SN/A // load object file into target memory 2332561SN/A objFile->loadSections(initVirtMem); 2342561SN/A 2352585SN/A enum hardwareCaps 2362585SN/A { 2372585SN/A M5_HWCAP_SPARC_FLUSH = 1, 2382585SN/A M5_HWCAP_SPARC_STBAR = 2, 2392585SN/A M5_HWCAP_SPARC_SWAP = 4, 2402585SN/A M5_HWCAP_SPARC_MULDIV = 8, 2412585SN/A M5_HWCAP_SPARC_V9 = 16, 2422585SN/A //This one should technically only be set 2432585SN/A //if there is a cheetah or cheetah_plus tlb, 2442585SN/A //but we'll use it all the time 2452585SN/A M5_HWCAP_SPARC_ULTRA3 = 32 2462585SN/A }; 2472585SN/A 2482585SN/A const int64_t hwcap = 2492585SN/A M5_HWCAP_SPARC_FLUSH | 2502585SN/A M5_HWCAP_SPARC_STBAR | 2512585SN/A M5_HWCAP_SPARC_SWAP | 2522585SN/A M5_HWCAP_SPARC_MULDIV | 2532585SN/A M5_HWCAP_SPARC_V9 | 2542585SN/A M5_HWCAP_SPARC_ULTRA3; 2552585SN/A 2562976Sgblack@eecs.umich.edu 2572976Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 2582976Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 2592976Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 2602976Sgblack@eecs.umich.edu if(elfObject) 2612976Sgblack@eecs.umich.edu { 2622976Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 2634793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_HWCAP, hwcap)); 2642976Sgblack@eecs.umich.edu //The system page size 2654793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PAGESZ, SparcISA::VMPageSize)); 2662976Sgblack@eecs.umich.edu //Defined to be 100 in the kernel source. 2672976Sgblack@eecs.umich.edu //Frequency at which times() increments 2684793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_CLKTCK, 100)); 2692976Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 2702976Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 2714793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable())); 2722976Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 2734793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize())); 2742976Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 2754793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount())); 2762976Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 2772976Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 2782976Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 2794793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_BASE, 0)); 2802976Sgblack@eecs.umich.edu //This is hardwired to 0 in the elf loading code in the kernel 2814793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_FLAGS, 0)); 2822976Sgblack@eecs.umich.edu //The entry point to the program 2834793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint())); 2842976Sgblack@eecs.umich.edu //Different user and group IDs 2854793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_UID, uid())); 2864793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EUID, euid())); 2874793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_GID, gid())); 2884793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_EGID, egid())); 2892976Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 2904793Sgblack@eecs.umich.edu auxv.push_back(auxv_t(M5_AT_SECURE, 0)); 2912976Sgblack@eecs.umich.edu } 2922585SN/A 2932561SN/A //Figure out how big the initial stack needs to be 2942561SN/A 2953044Sgblack@eecs.umich.edu // The unaccounted for 0 at the top of the stack 2963044Sgblack@eecs.umich.edu int mysterious_size = intSize; 2973044Sgblack@eecs.umich.edu 2983044Sgblack@eecs.umich.edu //This is the name of the file which is present on the initial stack 2993044Sgblack@eecs.umich.edu //It's purpose is to let the user space linker examine the original file. 3003044Sgblack@eecs.umich.edu int file_name_size = filename.size() + 1; 3013044Sgblack@eecs.umich.edu 3022561SN/A int env_data_size = 0; 3032561SN/A for (int i = 0; i < envp.size(); ++i) { 3042561SN/A env_data_size += envp[i].size() + 1; 3052561SN/A } 3062561SN/A int arg_data_size = 0; 3072561SN/A for (int i = 0; i < argv.size(); ++i) { 3082561SN/A arg_data_size += argv[i].size() + 1; 3092561SN/A } 3102561SN/A 3113044Sgblack@eecs.umich.edu //The info_block needs to be padded so it's size is a multiple of the 3123044Sgblack@eecs.umich.edu //alignment mask. Also, it appears that there needs to be at least some 3133044Sgblack@eecs.umich.edu //padding, so if the size is already a multiple, we need to increase it 3143044Sgblack@eecs.umich.edu //anyway. 3153044Sgblack@eecs.umich.edu int info_block_size = 3163044Sgblack@eecs.umich.edu (file_name_size + 3173044Sgblack@eecs.umich.edu env_data_size + 3183044Sgblack@eecs.umich.edu arg_data_size + 3193044Sgblack@eecs.umich.edu intSize) & alignmentMask; 3203044Sgblack@eecs.umich.edu 3213044Sgblack@eecs.umich.edu int info_block_padding = 3223044Sgblack@eecs.umich.edu info_block_size - 3233044Sgblack@eecs.umich.edu file_name_size - 3243044Sgblack@eecs.umich.edu env_data_size - 3253044Sgblack@eecs.umich.edu arg_data_size; 3263044Sgblack@eecs.umich.edu 3273044Sgblack@eecs.umich.edu //Each auxilliary vector is two 8 byte words 3282561SN/A int aux_array_size = intSize * 2 * (auxv.size() + 1); 3292561SN/A 3303044Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 3312561SN/A int argv_array_size = intSize * (argv.size() + 1); 3322561SN/A 3332561SN/A int argc_size = intSize; 3342561SN/A int window_save_size = intSize * 16; 3352561SN/A 3362561SN/A int space_needed = 3373044Sgblack@eecs.umich.edu mysterious_size + 3382561SN/A info_block_size + 3392561SN/A aux_array_size + 3402561SN/A envp_array_size + 3412561SN/A argv_array_size + 3422561SN/A argc_size + 3432561SN/A window_save_size; 3442561SN/A 3452561SN/A stack_min = stack_base - space_needed; 3462561SN/A stack_min &= alignmentMask; 3472561SN/A stack_size = stack_base - stack_min; 3482561SN/A 3492561SN/A // map memory 3502561SN/A pTable->allocate(roundDown(stack_min, pageSize), 3512561SN/A roundUp(stack_size, pageSize)); 3522561SN/A 3532561SN/A // map out initial stack contents 3543044Sgblack@eecs.umich.edu Addr mysterious_base = stack_base - mysterious_size; 3553044Sgblack@eecs.umich.edu Addr file_name_base = mysterious_base - file_name_size; 3563044Sgblack@eecs.umich.edu Addr env_data_base = file_name_base - env_data_size; 3572561SN/A Addr arg_data_base = env_data_base - arg_data_size; 3583044Sgblack@eecs.umich.edu Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding; 3592585SN/A Addr envp_array_base = auxv_array_base - envp_array_size; 3602561SN/A Addr argv_array_base = envp_array_base - argv_array_size; 3612561SN/A Addr argc_base = argv_array_base - argc_size; 3623039Sstever@eecs.umich.edu#ifndef NDEBUG 3633039Sstever@eecs.umich.edu // only used in DPRINTF 3642561SN/A Addr window_save_base = argc_base - window_save_size; 3653039Sstever@eecs.umich.edu#endif 3662561SN/A 3672561SN/A DPRINTF(Sparc, "The addresses of items on the initial stack:\n"); 3683044Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - file name\n", file_name_base); 3692561SN/A DPRINTF(Sparc, "0x%x - env data\n", env_data_base); 3702561SN/A DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base); 3712585SN/A DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base); 3722585SN/A DPRINTF(Sparc, "0x%x - envp array\n", envp_array_base); 3732585SN/A DPRINTF(Sparc, "0x%x - argv array\n", argv_array_base); 3742561SN/A DPRINTF(Sparc, "0x%x - argc \n", argc_base); 3752561SN/A DPRINTF(Sparc, "0x%x - window save\n", window_save_base); 3762561SN/A DPRINTF(Sparc, "0x%x - stack min\n", stack_min); 3772561SN/A 3782561SN/A // write contents to stack 3793044Sgblack@eecs.umich.edu 3803044Sgblack@eecs.umich.edu // figure out argc 3812561SN/A uint64_t argc = argv.size(); 3822585SN/A uint64_t guestArgc = TheISA::htog(argc); 3832561SN/A 3843044Sgblack@eecs.umich.edu //Write out the mysterious 0 3853044Sgblack@eecs.umich.edu uint64_t mysterious_zero = 0; 3863044Sgblack@eecs.umich.edu initVirtMem->writeBlob(mysterious_base, 3873044Sgblack@eecs.umich.edu (uint8_t*)&mysterious_zero, mysterious_size); 3883044Sgblack@eecs.umich.edu 3893044Sgblack@eecs.umich.edu //Write the file name 3903044Sgblack@eecs.umich.edu initVirtMem->writeString(file_name_base, filename.c_str()); 3913044Sgblack@eecs.umich.edu 3922585SN/A //Copy the aux stuff 3932585SN/A for(int x = 0; x < auxv.size(); x++) 3942585SN/A { 3952585SN/A initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 3962585SN/A (uint8_t*)&(auxv[x].a_type), intSize); 3972585SN/A initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 3982585SN/A (uint8_t*)&(auxv[x].a_val), intSize); 3992585SN/A } 4002585SN/A //Write out the terminating zeroed auxilliary vector 4012561SN/A const uint64_t zero = 0; 4022585SN/A initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 4032585SN/A (uint8_t*)&zero, 2 * intSize); 4042561SN/A 4052561SN/A copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 4062561SN/A copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 4072561SN/A 4082585SN/A initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 4092561SN/A 4103415Sgblack@eecs.umich.edu //Stuff the trap handlers into the processes address space. 4113415Sgblack@eecs.umich.edu //Since the stack grows down and is the highest area in the processes 4123415Sgblack@eecs.umich.edu //address space, we can put stuff above it and stay out of the way. 4133415Sgblack@eecs.umich.edu int fillSize = sizeof(MachInst) * numFillInsts; 4143415Sgblack@eecs.umich.edu int spillSize = sizeof(MachInst) * numSpillInsts; 4153415Sgblack@eecs.umich.edu fillStart = stack_base; 4163415Sgblack@eecs.umich.edu spillStart = fillStart + fillSize; 4174111Sgblack@eecs.umich.edu initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler64, fillSize); 4184111Sgblack@eecs.umich.edu initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler64, spillSize); 4193415Sgblack@eecs.umich.edu 4203415Sgblack@eecs.umich.edu //Set up the thread context to start running the process 4214772Sgblack@eecs.umich.edu assert(NumArgumentRegs >= 2); 4224772Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(ArgumentReg[0], argc); 4234772Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base); 4242680Sktlim@umich.edu threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias); 4252561SN/A 4262561SN/A Addr prog_entry = objFile->entryPoint(); 4272680Sktlim@umich.edu threadContexts[0]->setPC(prog_entry); 4282680Sktlim@umich.edu threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 4292680Sktlim@umich.edu threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 4302561SN/A 4313959Sgblack@eecs.umich.edu //Align the "stack_min" to a page boundary. 4323959Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, pageSize); 4333959Sgblack@eecs.umich.edu 4342561SN/A// num_processes++; 4352561SN/A} 4364111Sgblack@eecs.umich.edu 4374111Sgblack@eecs.umich.eduvoid 4384111Sgblack@eecs.umich.eduSparc32LiveProcess::argsInit(int intSize, int pageSize) 4394111Sgblack@eecs.umich.edu{ 4404111Sgblack@eecs.umich.edu typedef M5_32_auxv_t auxv_t; 4414111Sgblack@eecs.umich.edu Process::startup(); 4424111Sgblack@eecs.umich.edu 4434111Sgblack@eecs.umich.edu string filename; 4444111Sgblack@eecs.umich.edu if(argv.size() < 1) 4454111Sgblack@eecs.umich.edu filename = ""; 4464111Sgblack@eecs.umich.edu else 4474111Sgblack@eecs.umich.edu filename = argv[0]; 4484111Sgblack@eecs.umich.edu 4494117Sgblack@eecs.umich.edu //Even though this is a 32 bit process, the ABI says we still need to 4504117Sgblack@eecs.umich.edu //maintain double word alignment of the stack pointer. 4514117Sgblack@eecs.umich.edu Addr alignmentMask = ~(8 - 1); 4524111Sgblack@eecs.umich.edu 4534111Sgblack@eecs.umich.edu // load object file into target memory 4544111Sgblack@eecs.umich.edu objFile->loadSections(initVirtMem); 4554111Sgblack@eecs.umich.edu 4564111Sgblack@eecs.umich.edu //These are the auxilliary vector types 4574111Sgblack@eecs.umich.edu enum auxTypes 4584111Sgblack@eecs.umich.edu { 4594111Sgblack@eecs.umich.edu SPARC_AT_HWCAP = 16, 4604111Sgblack@eecs.umich.edu SPARC_AT_PAGESZ = 6, 4614111Sgblack@eecs.umich.edu SPARC_AT_CLKTCK = 17, 4624111Sgblack@eecs.umich.edu SPARC_AT_PHDR = 3, 4634111Sgblack@eecs.umich.edu SPARC_AT_PHENT = 4, 4644111Sgblack@eecs.umich.edu SPARC_AT_PHNUM = 5, 4654111Sgblack@eecs.umich.edu SPARC_AT_BASE = 7, 4664111Sgblack@eecs.umich.edu SPARC_AT_FLAGS = 8, 4674111Sgblack@eecs.umich.edu SPARC_AT_ENTRY = 9, 4684111Sgblack@eecs.umich.edu SPARC_AT_UID = 11, 4694111Sgblack@eecs.umich.edu SPARC_AT_EUID = 12, 4704111Sgblack@eecs.umich.edu SPARC_AT_GID = 13, 4714111Sgblack@eecs.umich.edu SPARC_AT_EGID = 14, 4724111Sgblack@eecs.umich.edu SPARC_AT_SECURE = 23 4734111Sgblack@eecs.umich.edu }; 4744111Sgblack@eecs.umich.edu 4754111Sgblack@eecs.umich.edu enum hardwareCaps 4764111Sgblack@eecs.umich.edu { 4774111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_FLUSH = 1, 4784111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_STBAR = 2, 4794111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_SWAP = 4, 4804111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_MULDIV = 8, 4814111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_V9 = 16, 4824111Sgblack@eecs.umich.edu //This one should technically only be set 4834111Sgblack@eecs.umich.edu //if there is a cheetah or cheetah_plus tlb, 4844111Sgblack@eecs.umich.edu //but we'll use it all the time 4854111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_ULTRA3 = 32 4864111Sgblack@eecs.umich.edu }; 4874111Sgblack@eecs.umich.edu 4884111Sgblack@eecs.umich.edu const int64_t hwcap = 4894111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_FLUSH | 4904111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_STBAR | 4914111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_SWAP | 4924111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_MULDIV | 4934111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_V9 | 4944111Sgblack@eecs.umich.edu M5_HWCAP_SPARC_ULTRA3; 4954111Sgblack@eecs.umich.edu 4964111Sgblack@eecs.umich.edu 4974111Sgblack@eecs.umich.edu //Setup the auxilliary vectors. These will already have endian conversion. 4984111Sgblack@eecs.umich.edu //Auxilliary vectors are loaded only for elf formatted executables. 4994111Sgblack@eecs.umich.edu ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile); 5004111Sgblack@eecs.umich.edu if(elfObject) 5014111Sgblack@eecs.umich.edu { 5024111Sgblack@eecs.umich.edu //Bits which describe the system hardware capabilities 5034111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_HWCAP, hwcap)); 5044111Sgblack@eecs.umich.edu //The system page size 5054111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PAGESZ, SparcISA::VMPageSize)); 5064111Sgblack@eecs.umich.edu //Defined to be 100 in the kernel source. 5074111Sgblack@eecs.umich.edu //Frequency at which times() increments 5084111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_CLKTCK, 100)); 5094111Sgblack@eecs.umich.edu // For statically linked executables, this is the virtual address of the 5104111Sgblack@eecs.umich.edu // program header tables if they appear in the executable image 5114111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PHDR, elfObject->programHeaderTable())); 5124111Sgblack@eecs.umich.edu // This is the size of a program header entry from the elf file. 5134111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PHENT, elfObject->programHeaderSize())); 5144111Sgblack@eecs.umich.edu // This is the number of program headers from the original elf file. 5154111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_PHNUM, elfObject->programHeaderCount())); 5164111Sgblack@eecs.umich.edu //This is the address of the elf "interpreter", It should be set 5174111Sgblack@eecs.umich.edu //to 0 for regular executables. It should be something else 5184111Sgblack@eecs.umich.edu //(not sure what) for dynamic libraries. 5194111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_BASE, 0)); 5204111Sgblack@eecs.umich.edu //This is hardwired to 0 in the elf loading code in the kernel 5214111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_FLAGS, 0)); 5224111Sgblack@eecs.umich.edu //The entry point to the program 5234111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_ENTRY, objFile->entryPoint())); 5244111Sgblack@eecs.umich.edu //Different user and group IDs 5254111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_UID, uid())); 5264111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_EUID, euid())); 5274111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_GID, gid())); 5284111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_EGID, egid())); 5294111Sgblack@eecs.umich.edu //Whether to enable "secure mode" in the executable 5304111Sgblack@eecs.umich.edu auxv.push_back(auxv_t(SPARC_AT_SECURE, 0)); 5314111Sgblack@eecs.umich.edu } 5324111Sgblack@eecs.umich.edu 5334111Sgblack@eecs.umich.edu //Figure out how big the initial stack needs to be 5344111Sgblack@eecs.umich.edu 5354164Sgblack@eecs.umich.edu // The unaccounted for 8 byte 0 at the top of the stack 5364164Sgblack@eecs.umich.edu int mysterious_size = 8; 5374111Sgblack@eecs.umich.edu 5384111Sgblack@eecs.umich.edu //This is the name of the file which is present on the initial stack 5394111Sgblack@eecs.umich.edu //It's purpose is to let the user space linker examine the original file. 5404111Sgblack@eecs.umich.edu int file_name_size = filename.size() + 1; 5414111Sgblack@eecs.umich.edu 5424111Sgblack@eecs.umich.edu int env_data_size = 0; 5434111Sgblack@eecs.umich.edu for (int i = 0; i < envp.size(); ++i) { 5444111Sgblack@eecs.umich.edu env_data_size += envp[i].size() + 1; 5454111Sgblack@eecs.umich.edu } 5464111Sgblack@eecs.umich.edu int arg_data_size = 0; 5474111Sgblack@eecs.umich.edu for (int i = 0; i < argv.size(); ++i) { 5484111Sgblack@eecs.umich.edu arg_data_size += argv[i].size() + 1; 5494111Sgblack@eecs.umich.edu } 5504111Sgblack@eecs.umich.edu 5514164Sgblack@eecs.umich.edu //The info_block - This seems to need an pad for some reason. 5524111Sgblack@eecs.umich.edu int info_block_size = 5534164Sgblack@eecs.umich.edu (mysterious_size + 5544164Sgblack@eecs.umich.edu file_name_size + 5554111Sgblack@eecs.umich.edu env_data_size + 5564164Sgblack@eecs.umich.edu arg_data_size + intSize); 5574111Sgblack@eecs.umich.edu 5584164Sgblack@eecs.umich.edu //Each auxilliary vector is two 4 byte words 5594111Sgblack@eecs.umich.edu int aux_array_size = intSize * 2 * (auxv.size() + 1); 5604111Sgblack@eecs.umich.edu 5614111Sgblack@eecs.umich.edu int envp_array_size = intSize * (envp.size() + 1); 5624111Sgblack@eecs.umich.edu int argv_array_size = intSize * (argv.size() + 1); 5634111Sgblack@eecs.umich.edu 5644111Sgblack@eecs.umich.edu int argc_size = intSize; 5654111Sgblack@eecs.umich.edu int window_save_size = intSize * 16; 5664111Sgblack@eecs.umich.edu 5674111Sgblack@eecs.umich.edu int space_needed = 5684164Sgblack@eecs.umich.edu info_block_size + 5694111Sgblack@eecs.umich.edu aux_array_size + 5704111Sgblack@eecs.umich.edu envp_array_size + 5714111Sgblack@eecs.umich.edu argv_array_size + 5724111Sgblack@eecs.umich.edu argc_size + 5734111Sgblack@eecs.umich.edu window_save_size; 5744111Sgblack@eecs.umich.edu 5754111Sgblack@eecs.umich.edu stack_min = stack_base - space_needed; 5764111Sgblack@eecs.umich.edu stack_min &= alignmentMask; 5774111Sgblack@eecs.umich.edu stack_size = stack_base - stack_min; 5784111Sgblack@eecs.umich.edu 5794111Sgblack@eecs.umich.edu // map memory 5804111Sgblack@eecs.umich.edu pTable->allocate(roundDown(stack_min, pageSize), 5814111Sgblack@eecs.umich.edu roundUp(stack_size, pageSize)); 5824111Sgblack@eecs.umich.edu 5834111Sgblack@eecs.umich.edu // map out initial stack contents 5844117Sgblack@eecs.umich.edu uint32_t window_save_base = stack_min; 5854117Sgblack@eecs.umich.edu uint32_t argc_base = window_save_base + window_save_size; 5864117Sgblack@eecs.umich.edu uint32_t argv_array_base = argc_base + argc_size; 5874117Sgblack@eecs.umich.edu uint32_t envp_array_base = argv_array_base + argv_array_size; 5884117Sgblack@eecs.umich.edu uint32_t auxv_array_base = envp_array_base + envp_array_size; 5894117Sgblack@eecs.umich.edu //The info block is pushed up against the top of the stack, while 5904117Sgblack@eecs.umich.edu //the rest of the initial stack frame is aligned to an 8 byte boudary. 5914164Sgblack@eecs.umich.edu uint32_t arg_data_base = stack_base - info_block_size + intSize; 5924117Sgblack@eecs.umich.edu uint32_t env_data_base = arg_data_base + arg_data_size; 5934117Sgblack@eecs.umich.edu uint32_t file_name_base = env_data_base + env_data_size; 5944117Sgblack@eecs.umich.edu uint32_t mysterious_base = file_name_base + file_name_size; 5954111Sgblack@eecs.umich.edu 5964111Sgblack@eecs.umich.edu DPRINTF(Sparc, "The addresses of items on the initial stack:\n"); 5974111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - file name\n", file_name_base); 5984111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - env data\n", env_data_base); 5994111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base); 6004111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base); 6014111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - envp array\n", envp_array_base); 6024111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - argv array\n", argv_array_base); 6034111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - argc \n", argc_base); 6044111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - window save\n", window_save_base); 6054111Sgblack@eecs.umich.edu DPRINTF(Sparc, "0x%x - stack min\n", stack_min); 6064111Sgblack@eecs.umich.edu 6074111Sgblack@eecs.umich.edu // write contents to stack 6084111Sgblack@eecs.umich.edu 6094111Sgblack@eecs.umich.edu // figure out argc 6104111Sgblack@eecs.umich.edu uint32_t argc = argv.size(); 6114111Sgblack@eecs.umich.edu uint32_t guestArgc = TheISA::htog(argc); 6124111Sgblack@eecs.umich.edu 6134111Sgblack@eecs.umich.edu //Write out the mysterious 0 6144111Sgblack@eecs.umich.edu uint64_t mysterious_zero = 0; 6154111Sgblack@eecs.umich.edu initVirtMem->writeBlob(mysterious_base, 6164111Sgblack@eecs.umich.edu (uint8_t*)&mysterious_zero, mysterious_size); 6174111Sgblack@eecs.umich.edu 6184111Sgblack@eecs.umich.edu //Write the file name 6194111Sgblack@eecs.umich.edu initVirtMem->writeString(file_name_base, filename.c_str()); 6204111Sgblack@eecs.umich.edu 6214111Sgblack@eecs.umich.edu //Copy the aux stuff 6224111Sgblack@eecs.umich.edu for(int x = 0; x < auxv.size(); x++) 6234111Sgblack@eecs.umich.edu { 6244111Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 6254111Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_type), intSize); 6264111Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 6274111Sgblack@eecs.umich.edu (uint8_t*)&(auxv[x].a_val), intSize); 6284111Sgblack@eecs.umich.edu } 6294111Sgblack@eecs.umich.edu //Write out the terminating zeroed auxilliary vector 6304111Sgblack@eecs.umich.edu const uint64_t zero = 0; 6314111Sgblack@eecs.umich.edu initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 6324111Sgblack@eecs.umich.edu (uint8_t*)&zero, 2 * intSize); 6334111Sgblack@eecs.umich.edu 6344117Sgblack@eecs.umich.edu copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 6354117Sgblack@eecs.umich.edu copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 6364111Sgblack@eecs.umich.edu 6374111Sgblack@eecs.umich.edu initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 6384111Sgblack@eecs.umich.edu 6394111Sgblack@eecs.umich.edu //Stuff the trap handlers into the processes address space. 6404111Sgblack@eecs.umich.edu //Since the stack grows down and is the highest area in the processes 6414111Sgblack@eecs.umich.edu //address space, we can put stuff above it and stay out of the way. 6424111Sgblack@eecs.umich.edu int fillSize = sizeof(MachInst) * numFillInsts; 6434111Sgblack@eecs.umich.edu int spillSize = sizeof(MachInst) * numSpillInsts; 6444111Sgblack@eecs.umich.edu fillStart = stack_base; 6454111Sgblack@eecs.umich.edu spillStart = fillStart + fillSize; 6464111Sgblack@eecs.umich.edu initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler32, fillSize); 6474111Sgblack@eecs.umich.edu initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler32, spillSize); 6484111Sgblack@eecs.umich.edu 6494111Sgblack@eecs.umich.edu //Set up the thread context to start running the process 6504772Sgblack@eecs.umich.edu //assert(NumArgumentRegs >= 2); 6514772Sgblack@eecs.umich.edu //threadContexts[0]->setIntReg(ArgumentReg[0], argc); 6524772Sgblack@eecs.umich.edu //threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base); 6534111Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(StackPointerReg, stack_min); 6544111Sgblack@eecs.umich.edu 6554117Sgblack@eecs.umich.edu uint32_t prog_entry = objFile->entryPoint(); 6564111Sgblack@eecs.umich.edu threadContexts[0]->setPC(prog_entry); 6574111Sgblack@eecs.umich.edu threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 6584111Sgblack@eecs.umich.edu threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 6594111Sgblack@eecs.umich.edu 6604111Sgblack@eecs.umich.edu //Align the "stack_min" to a page boundary. 6614111Sgblack@eecs.umich.edu stack_min = roundDown(stack_min, pageSize); 6624111Sgblack@eecs.umich.edu 6634111Sgblack@eecs.umich.edu// num_processes++; 6644111Sgblack@eecs.umich.edu} 6655128Sgblack@eecs.umich.edu 6665128Sgblack@eecs.umich.eduvoid Sparc32LiveProcess::flushWindows(ThreadContext *tc) 6675128Sgblack@eecs.umich.edu{ 6685128Sgblack@eecs.umich.edu IntReg Cansave = tc->readIntReg(NumIntArchRegs + 3); 6695128Sgblack@eecs.umich.edu IntReg Canrestore = tc->readIntReg(NumIntArchRegs + 4); 6705128Sgblack@eecs.umich.edu IntReg Otherwin = tc->readIntReg(NumIntArchRegs + 6); 6715128Sgblack@eecs.umich.edu MiscReg CWP = tc->readMiscReg(MISCREG_CWP); 6725128Sgblack@eecs.umich.edu MiscReg origCWP = CWP; 6735128Sgblack@eecs.umich.edu CWP = (CWP + Cansave + 2) % NWindows; 6745128Sgblack@eecs.umich.edu while(NWindows - 2 - Cansave != 0) 6755128Sgblack@eecs.umich.edu { 6765128Sgblack@eecs.umich.edu if (Otherwin) { 6775128Sgblack@eecs.umich.edu panic("Otherwin non-zero.\n"); 6785128Sgblack@eecs.umich.edu } else { 6795128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, CWP); 6805128Sgblack@eecs.umich.edu //Do the stores 6815128Sgblack@eecs.umich.edu IntReg sp = tc->readIntReg(StackPointerReg); 6825128Sgblack@eecs.umich.edu for (int index = 16; index < 32; index++) { 6835128Sgblack@eecs.umich.edu IntReg regVal = tc->readIntReg(index); 6845128Sgblack@eecs.umich.edu regVal = htog(regVal); 6855128Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryWriteBlob( 6865128Sgblack@eecs.umich.edu sp + (index - 16) * 4, (uint8_t *)®Val, 4)) { 6875128Sgblack@eecs.umich.edu warn("Failed to save register to the stack when " 6885128Sgblack@eecs.umich.edu "flushing windows.\n"); 6895128Sgblack@eecs.umich.edu } 6905128Sgblack@eecs.umich.edu } 6915128Sgblack@eecs.umich.edu Canrestore--; 6925128Sgblack@eecs.umich.edu Cansave++; 6935128Sgblack@eecs.umich.edu CWP = (CWP + 1) % NWindows; 6945128Sgblack@eecs.umich.edu } 6955128Sgblack@eecs.umich.edu } 6965128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 3, Cansave); 6975128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 4, Canrestore); 6985128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, origCWP); 6995128Sgblack@eecs.umich.edu} 7005128Sgblack@eecs.umich.edu 7015128Sgblack@eecs.umich.eduvoid Sparc64LiveProcess::flushWindows(ThreadContext *tc) 7025128Sgblack@eecs.umich.edu{ 7035128Sgblack@eecs.umich.edu IntReg Cansave = tc->readIntReg(NumIntArchRegs + 3); 7045128Sgblack@eecs.umich.edu IntReg Canrestore = tc->readIntReg(NumIntArchRegs + 4); 7055128Sgblack@eecs.umich.edu IntReg Otherwin = tc->readIntReg(NumIntArchRegs + 6); 7065128Sgblack@eecs.umich.edu MiscReg CWP = tc->readMiscReg(MISCREG_CWP); 7075128Sgblack@eecs.umich.edu MiscReg origCWP = CWP; 7085128Sgblack@eecs.umich.edu CWP = (CWP + Cansave + 2) % NWindows; 7095128Sgblack@eecs.umich.edu while(NWindows - 2 - Cansave != 0) 7105128Sgblack@eecs.umich.edu { 7115128Sgblack@eecs.umich.edu if (Otherwin) { 7125128Sgblack@eecs.umich.edu panic("Otherwin non-zero.\n"); 7135128Sgblack@eecs.umich.edu } else { 7145128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, CWP); 7155128Sgblack@eecs.umich.edu //Do the stores 7165128Sgblack@eecs.umich.edu IntReg sp = tc->readIntReg(StackPointerReg); 7175128Sgblack@eecs.umich.edu for (int index = 16; index < 32; index++) { 7185128Sgblack@eecs.umich.edu IntReg regVal = tc->readIntReg(index); 7195128Sgblack@eecs.umich.edu regVal = htog(regVal); 7205128Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryWriteBlob( 7215128Sgblack@eecs.umich.edu sp + 2047 + (index - 16) * 8, (uint8_t *)®Val, 8)) { 7225128Sgblack@eecs.umich.edu warn("Failed to save register to the stack when " 7235128Sgblack@eecs.umich.edu "flushing windows.\n"); 7245128Sgblack@eecs.umich.edu } 7255128Sgblack@eecs.umich.edu } 7265128Sgblack@eecs.umich.edu Canrestore--; 7275128Sgblack@eecs.umich.edu Cansave++; 7285128Sgblack@eecs.umich.edu CWP = (CWP + 1) % NWindows; 7295128Sgblack@eecs.umich.edu } 7305128Sgblack@eecs.umich.edu } 7315128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 3, Cansave); 7325128Sgblack@eecs.umich.edu tc->setIntReg(NumIntArchRegs + 4, Canrestore); 7335128Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CWP, origCWP); 7345128Sgblack@eecs.umich.edu} 735