syscall_emul.hh revision 11885
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 4812018Sandreas.sandberg@arm.com#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 4912018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__CYGWIN__) || \ 5012018Sandreas.sandberg@arm.com defined(__NetBSD__)) 5112018Sandreas.sandberg@arm.com 5212018Sandreas.sandberg@arm.com#define NO_STATFS (defined(__APPLE__) || defined(__OpenBSD__) || \ 5312018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__NetBSD__)) 5412018Sandreas.sandberg@arm.com 552064SN/A#define NO_FALLOCATE (defined(__APPLE__) || defined(__OpenBSD__) || \ 56360SN/A defined(__FreeBSD__) || defined(__NetBSD__)) 57360SN/A 58360SN/A/// 59360SN/A/// @file syscall_emul.hh 60360SN/A/// 61360SN/A/// This file defines objects used to emulate syscalls from the target 6213936SAndrea.Mondelli@ucf.edu/// application on the host machine. 6313933Sbrandon.potter@amd.com 6413933Sbrandon.potter@amd.com#ifdef __CYGWIN32__ 6513933Sbrandon.potter@amd.com#include <sys/fcntl.h> 6613936SAndrea.Mondelli@ucf.edu 6713936SAndrea.Mondelli@ucf.edu#endif 6813936SAndrea.Mondelli@ucf.edu#include <fcntl.h> 6913933Sbrandon.potter@amd.com#include <sys/mman.h> 7013933Sbrandon.potter@amd.com#include <sys/stat.h> 711809SN/A#if (NO_STATFS == 0) 7211800Sbrandon.potter@amd.com#include <sys/statfs.h> 7311392Sbrandon.potter@amd.com#else 741809SN/A#include <sys/mount.h> 7511392Sbrandon.potter@amd.com#endif 7613902Sbrandon.potter@amd.com#include <sys/time.h> 7713570Sbrandon.potter@amd.com#include <sys/uio.h> 7813902Sbrandon.potter@amd.com#include <unistd.h> 7911383Sbrandon.potter@amd.com 8013568Sbrandon.potter@amd.com#include <cerrno> 813113Sgblack@eecs.umich.edu#include <memory> 828229Snate@binkert.org#include <string> 8313570Sbrandon.potter@amd.com 848229Snate@binkert.org#include "base/intmath.hh" 8511594Santhony.gutierrez@amd.com#include "base/loader/object_file.hh" 867075Snate@binkert.org#include "base/misc.hh" 878229Snate@binkert.org#include "base/trace.hh" 8811856Sbrandon.potter@amd.com#include "base/types.hh" 897075Snate@binkert.org#include "config/the_isa.hh" 90360SN/A#include "cpu/base.hh" 9112461Sgabeblack@google.com#include "cpu/thread_context.hh" 9211886Sbrandon.potter@amd.com#include "mem/page_table.hh" 9311800Sbrandon.potter@amd.com#include "sim/emul_driver.hh" 9411392Sbrandon.potter@amd.com#include "sim/process.hh" 9512334Sgabeblack@google.com#include "sim/syscall_debug_macros.hh" 961354SN/A#include "sim/syscall_emul_buf.hh" 976216Snate@binkert.org#include "sim/syscall_return.hh" 986658Snate@binkert.org 992474SN/Aclass SyscallDesc; 1002680Sktlim@umich.edu 1018229Snate@binkert.org////////////////////////////////////////////////////////////////////// 10211886Sbrandon.potter@amd.com// 10310496Ssteve.reinhardt@amd.com// The following emulation functions are generic enough that they 10411911SBrandon.Potter@amd.com// don't need to be recompiled for different emulated OS's. They are 1058229Snate@binkert.org// defined in sim/syscall_emul.cc. 10611794Sbrandon.potter@amd.com// 10711886Sbrandon.potter@amd.com////////////////////////////////////////////////////////////////////// 10810497Ssteve.reinhardt@amd.com 10911794Sbrandon.potter@amd.com 110360SN/A/// Handler for unimplemented syscalls that we haven't thought about. 11113629SAndrea.Mondelli@ucf.eduSyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 11213629SAndrea.Mondelli@ucf.edu Process *p, ThreadContext *tc); 11313629SAndrea.Mondelli@ucf.edu 11413629SAndrea.Mondelli@ucf.edu/// Handler for unimplemented syscalls that we never intend to 115360SN/A/// implement (signal handling, etc.) and should not affect the correct 116360SN/A/// behavior of the program. Print a warning only if the appropriate 117360SN/A/// trace flag is enabled. Return success to the target program. 118360SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 119360SN/A Process *p, ThreadContext *tc); 120360SN/A 121360SN/A// Target fallocateFunc() handler. 122360SN/ASyscallReturn fallocateFunc(SyscallDesc *desc, int num, 12313933Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 124360SN/A 125378SN/A/// Target exit() handler: terminate current context. 12613995Sbrandon.potter@amd.comSyscallReturn exitFunc(SyscallDesc *desc, int num, 127378SN/A Process *p, ThreadContext *tc); 128378SN/A 129378SN/A/// Target exit_group() handler: terminate simulation. (exit all threads) 130378SN/ASyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 131378SN/A Process *p, ThreadContext *tc); 13213995Sbrandon.potter@amd.com 133360SN/A/// Target getpagesize() handler. 13411760Sbrandon.potter@amd.comSyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 13513995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 13611760Sbrandon.potter@amd.com 1376109Ssanchezd@stanford.edu/// Target brk() handler: set brk address. 13813995Sbrandon.potter@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 139378SN/A Process *p, ThreadContext *tc); 1406109Ssanchezd@stanford.edu 14113995Sbrandon.potter@amd.com/// Target close() handler. 1426109Ssanchezd@stanford.eduSyscallReturn closeFunc(SyscallDesc *desc, int num, 14311886Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 14413995Sbrandon.potter@amd.com 14511886Sbrandon.potter@amd.com/// Target read() handler. 146378SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 14713995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 148378SN/A 1495748SSteve.Reinhardt@amd.com/// Target write() handler. 15013995Sbrandon.potter@amd.comSyscallReturn writeFunc(SyscallDesc *desc, int num, 151378SN/A Process *p, ThreadContext *tc); 152378SN/A 15313995Sbrandon.potter@amd.com/// Target lseek() handler. 154378SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 155378SN/A Process *p, ThreadContext *tc); 15613995Sbrandon.potter@amd.com 157378SN/A/// Target _llseek() handler. 1584118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 15913995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1604118Sgblack@eecs.umich.edu 161378SN/A/// Target munmap() handler. 16213995Sbrandon.potter@amd.comSyscallReturn munmapFunc(SyscallDesc *desc, int num, 163378SN/A Process *p, ThreadContext *tc); 16413568Sbrandon.potter@amd.com 16513995Sbrandon.potter@amd.com/// Target gethostname() handler. 16613568Sbrandon.potter@amd.comSyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 167378SN/A Process *p, ThreadContext *tc); 16813995Sbrandon.potter@amd.com 169360SN/A/// Target getcwd() handler. 1705513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 17113995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1725513SMichael.Adler@intel.com 17310203SAli.Saidi@ARM.com/// Target readlink() handler. 17413995Sbrandon.potter@amd.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 17510203SAli.Saidi@ARM.com Process *p, ThreadContext *tc, 17613995Sbrandon.potter@amd.com int index = 0); 1775513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 178511SN/A Process *p, ThreadContext *tc); 17913995Sbrandon.potter@amd.com 18010633Smichaelupton@gmail.com/// Target unlink() handler. 18113995Sbrandon.potter@amd.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 182511SN/A Process *p, ThreadContext *tc, 18312795Smattdsinclair@gmail.com int index); 18413995Sbrandon.potter@amd.comSyscallReturn unlinkFunc(SyscallDesc *desc, int num, 18512795Smattdsinclair@gmail.com Process *p, ThreadContext *tc); 18612796Smattdsinclair@gmail.com 18713995Sbrandon.potter@amd.com/// Target mkdir() handler. 18812796Smattdsinclair@gmail.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 1895513SMichael.Adler@intel.com Process *p, ThreadContext *tc); 19013995Sbrandon.potter@amd.com 1915513SMichael.Adler@intel.com/// Target rename() handler. 19213031Sbrandon.potter@amd.comSyscallReturn renameFunc(SyscallDesc *desc, int num, 19313995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 19413031Sbrandon.potter@amd.com 19513031Sbrandon.potter@amd.com 19613995Sbrandon.potter@amd.com/// Target truncate() handler. 19713031Sbrandon.potter@amd.comSyscallReturn truncateFunc(SyscallDesc *desc, int num, 19813031Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 19913995Sbrandon.potter@amd.com 20013031Sbrandon.potter@amd.com 201511SN/A/// Target ftruncate() handler. 20213995Sbrandon.potter@amd.comSyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2031706SN/A Process *p, ThreadContext *tc); 2041706SN/A 2051706SN/A 20613995Sbrandon.potter@amd.com/// Target truncate64() handler. 2071706SN/ASyscallReturn truncate64Func(SyscallDesc *desc, int num, 2081706SN/A Process *p, ThreadContext *tc); 2091706SN/A 21013995Sbrandon.potter@amd.com/// Target ftruncate64() handler. 2111706SN/ASyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 212511SN/A Process *p, ThreadContext *tc); 2136703Svince@csl.cornell.edu 21413995Sbrandon.potter@amd.com 2156703Svince@csl.cornell.edu/// Target umask() handler. 2166685Stjones1@inf.ed.ac.ukSyscallReturn umaskFunc(SyscallDesc *desc, int num, 21713995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2186685Stjones1@inf.ed.ac.uk 2196685Stjones1@inf.ed.ac.uk/// Target gettid() handler. 2205513SMichael.Adler@intel.comSyscallReturn gettidFunc(SyscallDesc *desc, int num, 22113995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2225513SMichael.Adler@intel.com 22311885Sbrandon.potter@amd.com/// Target chown() handler. 22413995Sbrandon.potter@amd.comSyscallReturn chownFunc(SyscallDesc *desc, int num, 2255513SMichael.Adler@intel.com Process *p, ThreadContext *tc); 2261999SN/A 22713995Sbrandon.potter@amd.com/// Target setpgid() handler. 2281999SN/ASyscallReturn setpgidFunc(SyscallDesc *desc, int num, 22911885Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 23013995Sbrandon.potter@amd.com 2311999SN/A/// Target fchown() handler. 2321999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 23313995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2341999SN/A 2353079Sstever@eecs.umich.edu/// Target dup() handler. 23613995Sbrandon.potter@amd.comSyscallReturn dupFunc(SyscallDesc *desc, int num, 2373079Sstever@eecs.umich.edu Process *process, ThreadContext *tc); 23811908SBrandon.Potter@amd.com 23913995Sbrandon.potter@amd.com/// Target fcntl() handler. 24011908SBrandon.Potter@amd.comSyscallReturn fcntlFunc(SyscallDesc *desc, int num, 24111875Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 24213995Sbrandon.potter@amd.com 2432093SN/A/// Target fcntl64() handler. 2442687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 24513995Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2462687Sksewell@umich.edu 2472238SN/A/// Target setuid() handler. 24813995Sbrandon.potter@amd.comSyscallReturn setuidFunc(SyscallDesc *desc, int num, 2492238SN/A Process *p, ThreadContext *tc); 25011908SBrandon.Potter@amd.com 25113995Sbrandon.potter@amd.com/// Target getpid() handler. 25211908SBrandon.Potter@amd.comSyscallReturn getpidFunc(SyscallDesc *desc, int num, 25311908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 25413995Sbrandon.potter@amd.com 25513995Sbrandon.potter@amd.com/// Target getuid() handler. 25611908SBrandon.Potter@amd.comSyscallReturn getuidFunc(SyscallDesc *desc, int num, 2572238SN/A Process *p, ThreadContext *tc); 25813995Sbrandon.potter@amd.com 2592238SN/A/// Target getgid() handler. 26013571Sbrandon.potter@amd.comSyscallReturn getgidFunc(SyscallDesc *desc, int num, 26113995Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 26213571Sbrandon.potter@amd.com 26313568Sbrandon.potter@amd.com/// Target getppid() handler. 26413995Sbrandon.potter@amd.comSyscallReturn getppidFunc(SyscallDesc *desc, int num, 26513568Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 26613568Sbrandon.potter@amd.com 26713995Sbrandon.potter@amd.com/// Target geteuid() handler. 26813568Sbrandon.potter@amd.comSyscallReturn geteuidFunc(SyscallDesc *desc, int num, 26913568Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 27013995Sbrandon.potter@amd.com 27113568Sbrandon.potter@amd.com/// Target getegid() handler. 27213448Sciro.santilli@arm.comSyscallReturn getegidFunc(SyscallDesc *desc, int num, 27313031Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 27413995Sbrandon.potter@amd.com 27513448Sciro.santilli@arm.com/// Target clone() handler. 27613031Sbrandon.potter@amd.comSyscallReturn cloneFunc(SyscallDesc *desc, int num, 27713539Sjavier.setoain@arm.com Process *p, ThreadContext *tc); 27813539Sjavier.setoain@arm.com 27913995Sbrandon.potter@amd.com/// Target access() handler 28013539Sjavier.setoain@arm.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 28113539Sjavier.setoain@arm.com Process *p, ThreadContext *tc); 28213569Sbrandon.potter@amd.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 28313995Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 28413569Sbrandon.potter@amd.com int index); 28513569Sbrandon.potter@amd.com 28613995Sbrandon.potter@amd.com/// Futex system call 28713569Sbrandon.potter@amd.com/// Implemented by Daniel Sanchez 28813569Sbrandon.potter@amd.com/// Used by printf's in multi-threaded apps 28913995Sbrandon.potter@amd.comtemplate <class OS> 29013569Sbrandon.potter@amd.comSyscallReturn 29113569Sbrandon.potter@amd.comfutexFunc(SyscallDesc *desc, int callnum, Process *process, 29213995Sbrandon.potter@amd.com ThreadContext *tc) 29313569Sbrandon.potter@amd.com{ 29413031Sbrandon.potter@amd.com int index_uaddr = 0; 29513995Sbrandon.potter@amd.com int index_op = 1; 2962238SN/A int index_val = 2; 2972238SN/A int index_timeout = 3; 29813995Sbrandon.potter@amd.com 2992238SN/A uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3002238SN/A int op = process->getSyscallArg(tc, index_op); 30113995Sbrandon.potter@amd.com int val = process->getSyscallArg(tc, index_val); 3022238SN/A uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3032238SN/A 30413995Sbrandon.potter@amd.com std::map<uint64_t, std::list<ThreadContext *> * > 3052238SN/A &futex_map = tc->getSystemPtr()->futexMap; 3062238SN/A 30713995Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3082238SN/A uaddr, op, val); 3099455Smitch.hayenga+gem5@gmail.com 31013995Sbrandon.potter@amd.com op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 31113995Sbrandon.potter@amd.com 31211851Sbrandon.potter@amd.com if (op == OS::TGT_FUTEX_WAIT) { 3139455Smitch.hayenga+gem5@gmail.com if (timeout != 0) { 31413571Sbrandon.potter@amd.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 31513995Sbrandon.potter@amd.com "we'll wait indefinitely"); 31613571Sbrandon.potter@amd.com } 31713571Sbrandon.potter@amd.com 31813995Sbrandon.potter@amd.com uint8_t *buf = new uint8_t[sizeof(int)]; 31913571Sbrandon.potter@amd.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 32013571Sbrandon.potter@amd.com int mem_val = *((int *)buf); 32113995Sbrandon.potter@amd.com delete[] buf; 32213571Sbrandon.potter@amd.com 3239112Smarc.orr@gmail.com if (val != mem_val) { 32411906SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 32511906SBrandon.Potter@amd.com "expected: %d\n", mem_val, val); 3269112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3279112Smarc.orr@gmail.com } 32813995Sbrandon.potter@amd.com 3299112Smarc.orr@gmail.com // Queue the thread context 33011911SBrandon.Potter@amd.com std::list<ThreadContext *> * tcWaitList; 3319112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 33211911SBrandon.Potter@amd.com tcWaitList = futex_map.find(uaddr)->second; 33313995Sbrandon.potter@amd.com } else { 33413995Sbrandon.potter@amd.com tcWaitList = new std::list<ThreadContext *>(); 33511911SBrandon.Potter@amd.com futex_map.insert(std::pair< uint64_t, 33611911SBrandon.Potter@amd.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 33711911SBrandon.Potter@amd.com } 33813642Sqtt2@cornell.edu tcWaitList->push_back(tc); 33913642Sqtt2@cornell.edu DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 34013642Sqtt2@cornell.edu "thread context\n"); 3419112Smarc.orr@gmail.com tc->suspend(); 34211911SBrandon.Potter@amd.com return 0; 34311911SBrandon.Potter@amd.com } else if (op == OS::TGT_FUTEX_WAKE){ 34411911SBrandon.Potter@amd.com int wokenUp = 0; 34511911SBrandon.Potter@amd.com std::list<ThreadContext *> * tcWaitList; 3469238Slluc.alvarez@bsc.es if (futex_map.count(uaddr)) { 34713642Sqtt2@cornell.edu tcWaitList = futex_map.find(uaddr)->second; 3489112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 34911911SBrandon.Potter@amd.com tcWaitList->front()->activate(); 3509112Smarc.orr@gmail.com tcWaitList->pop_front(); 35113642Sqtt2@cornell.edu wokenUp++; 35211911SBrandon.Potter@amd.com } 35311911SBrandon.Potter@amd.com if (tcWaitList->empty()) { 35411911SBrandon.Potter@amd.com futex_map.erase(uaddr); 35511911SBrandon.Potter@amd.com delete tcWaitList; 3569112Smarc.orr@gmail.com } 35711911SBrandon.Potter@amd.com } 35811911SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 35911911SBrandon.Potter@amd.com "thread contexts\n", wokenUp); 36011911SBrandon.Potter@amd.com return wokenUp; 36111911SBrandon.Potter@amd.com } else { 36211911SBrandon.Potter@amd.com warn("sys_futex: op %d is not implemented, just returning...", op); 3639112Smarc.orr@gmail.com return 0; 3649112Smarc.orr@gmail.com } 36513642Sqtt2@cornell.edu 36613642Sqtt2@cornell.edu} 36713642Sqtt2@cornell.edu 36813642Sqtt2@cornell.edu 36913642Sqtt2@cornell.edu/// Pseudo Funcs - These functions use a different return convension, 37011911SBrandon.Potter@amd.com/// returning a second value in a register other than the normal return register 3719112Smarc.orr@gmail.comSyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 37211911SBrandon.Potter@amd.com Process *process, ThreadContext *tc); 37311911SBrandon.Potter@amd.com 37413642Sqtt2@cornell.edu/// Target getpidPseudo() handler. 37513642Sqtt2@cornell.eduSyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 37613650Smw828@cornell.edu Process *p, ThreadContext *tc); 37713650Smw828@cornell.edu 37813650Smw828@cornell.edu/// Target getuidPseudo() handler. 37913650Smw828@cornell.eduSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 38013650Smw828@cornell.edu Process *p, ThreadContext *tc); 38113650Smw828@cornell.edu 38213650Smw828@cornell.edu/// Target getgidPseudo() handler. 38313650Smw828@cornell.eduSyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 38413650Smw828@cornell.edu Process *p, ThreadContext *tc); 38513650Smw828@cornell.edu 38613650Smw828@cornell.edu 38713650Smw828@cornell.edu/// A readable name for 1,000,000, for converting microseconds to seconds. 38813650Smw828@cornell.educonst int one_million = 1000000; 38913650Smw828@cornell.edu/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 39013651Smw828@cornell.educonst int one_billion = 1000000000; 39113651Smw828@cornell.edu 39213651Smw828@cornell.edu/// Approximate seconds since the epoch (1/1/1970). About a billion, 39313651Smw828@cornell.edu/// by my reckoning. We want to keep this a constant (not use the 39413651Smw828@cornell.edu/// real-world time) to keep simulations repeatable. 39513651Smw828@cornell.educonst unsigned seconds_since_epoch = 1000000000; 39613651Smw828@cornell.edu 39713651Smw828@cornell.edu/// Helper function to convert current elapsed time to seconds and 39813651Smw828@cornell.edu/// microseconds. 39913651Smw828@cornell.edutemplate <class T1, class T2> 40013651Smw828@cornell.eduvoid 40113651Smw828@cornell.edugetElapsedTimeMicro(T1 &sec, T2 &usec) 40213651Smw828@cornell.edu{ 40313651Smw828@cornell.edu uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 40413651Smw828@cornell.edu sec = elapsed_usecs / one_million; 40513651Smw828@cornell.edu usec = elapsed_usecs % one_million; 40613651Smw828@cornell.edu} 40713651Smw828@cornell.edu 40813651Smw828@cornell.edu/// Helper function to convert current elapsed time to seconds and 40913651Smw828@cornell.edu/// nanoseconds. 41013651Smw828@cornell.edutemplate <class T1, class T2> 41113651Smw828@cornell.eduvoid 41213651Smw828@cornell.edugetElapsedTimeNano(T1 &sec, T2 &nsec) 41313651Smw828@cornell.edu{ 41413651Smw828@cornell.edu uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 41513651Smw828@cornell.edu sec = elapsed_nsecs / one_billion; 41613651Smw828@cornell.edu nsec = elapsed_nsecs % one_billion; 41713651Smw828@cornell.edu} 41813651Smw828@cornell.edu 41913651Smw828@cornell.edu////////////////////////////////////////////////////////////////////// 42013651Smw828@cornell.edu// 42113651Smw828@cornell.edu// The following emulation functions are generic, but need to be 42213651Smw828@cornell.edu// templated to account for differences in types, constants, etc. 42313651Smw828@cornell.edu// 42413651Smw828@cornell.edu////////////////////////////////////////////////////////////////////// 42513651Smw828@cornell.edu 42613651Smw828@cornell.edu typedef struct statfs hst_statfs; 42713651Smw828@cornell.edu#if NO_STAT64 42813651Smw828@cornell.edu typedef struct stat hst_stat; 42913651Smw828@cornell.edu typedef struct stat hst_stat64; 43013651Smw828@cornell.edu#else 43113651Smw828@cornell.edu typedef struct stat hst_stat; 43213651Smw828@cornell.edu typedef struct stat64 hst_stat64; 43313651Smw828@cornell.edu#endif 43413651Smw828@cornell.edu 43513651Smw828@cornell.edu//// Helper function to convert a host stat buffer to a target stat 43613651Smw828@cornell.edu//// buffer. Also copies the target buffer out to the simulated 43713651Smw828@cornell.edu//// memory space. Used by stat(), fstat(), and lstat(). 43813651Smw828@cornell.edu 43913651Smw828@cornell.edutemplate <typename target_stat, typename host_stat> 44013651Smw828@cornell.edustatic void 44113651Smw828@cornell.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 44213651Smw828@cornell.edu{ 44313651Smw828@cornell.edu using namespace TheISA; 44413651Smw828@cornell.edu 44513651Smw828@cornell.edu if (fakeTTY) 44613651Smw828@cornell.edu tgt->st_dev = 0xA; 44713651Smw828@cornell.edu else 44813651Smw828@cornell.edu tgt->st_dev = host->st_dev; 44913651Smw828@cornell.edu tgt->st_dev = TheISA::htog(tgt->st_dev); 45013651Smw828@cornell.edu tgt->st_ino = host->st_ino; 45113651Smw828@cornell.edu tgt->st_ino = TheISA::htog(tgt->st_ino); 45213651Smw828@cornell.edu tgt->st_mode = host->st_mode; 45313651Smw828@cornell.edu if (fakeTTY) { 45413651Smw828@cornell.edu // Claim to be a character device 45513651Smw828@cornell.edu tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 45613651Smw828@cornell.edu tgt->st_mode |= S_IFCHR; // Set S_IFCHR 45713651Smw828@cornell.edu } 45813651Smw828@cornell.edu tgt->st_mode = TheISA::htog(tgt->st_mode); 45913651Smw828@cornell.edu tgt->st_nlink = host->st_nlink; 46013651Smw828@cornell.edu tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4619112Smarc.orr@gmail.com tgt->st_uid = host->st_uid; 46211911SBrandon.Potter@amd.com tgt->st_uid = TheISA::htog(tgt->st_uid); 46311911SBrandon.Potter@amd.com tgt->st_gid = host->st_gid; 4649112Smarc.orr@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4659112Smarc.orr@gmail.com if (fakeTTY) 4662238SN/A tgt->st_rdev = 0x880d; 4672238SN/A else 4682238SN/A tgt->st_rdev = host->st_rdev; 46913995Sbrandon.potter@amd.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4702238SN/A tgt->st_size = host->st_size; 4712238SN/A tgt->st_size = TheISA::htog(tgt->st_size); 47213995Sbrandon.potter@amd.com tgt->st_atimeX = host->st_atime; 4732238SN/A tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4742238SN/A tgt->st_mtimeX = host->st_mtime; 47513995Sbrandon.potter@amd.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4762238SN/A tgt->st_ctimeX = host->st_ctime; 4772238SN/A tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 47813995Sbrandon.potter@amd.com // Force the block size to be 8k. This helps to ensure buffered io works 4792238SN/A // consistently across different hosts. 4802238SN/A tgt->st_blksize = 0x2000; 4811354SN/A tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4821354SN/A tgt->st_blocks = host->st_blocks; 48310796Sbrandon.potter@amd.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 48410796Sbrandon.potter@amd.com} 4851354SN/A 4861354SN/A// Same for stat64 4871354SN/A 4881354SN/Atemplate <typename target_stat, typename host_stat64> 4891354SN/Astatic void 4901354SN/AconvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4911354SN/A{ 4921354SN/A using namespace TheISA; 4931354SN/A 4941354SN/A convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 49510796Sbrandon.potter@amd.com#if defined(STAT_HAVE_NSEC) 4961354SN/A tgt->st_atime_nsec = host->st_atime_nsec; 49710796Sbrandon.potter@amd.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 4981354SN/A tgt->st_mtime_nsec = host->st_mtime_nsec; 4991354SN/A tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5001354SN/A tgt->st_ctime_nsec = host->st_ctime_nsec; 5011354SN/A tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 50210796Sbrandon.potter@amd.com#else 50310796Sbrandon.potter@amd.com tgt->st_atime_nsec = 0; 50410796Sbrandon.potter@amd.com tgt->st_mtime_nsec = 0; 50510796Sbrandon.potter@amd.com tgt->st_ctime_nsec = 0; 50610796Sbrandon.potter@amd.com#endif 50710796Sbrandon.potter@amd.com} 50810796Sbrandon.potter@amd.com 50910796Sbrandon.potter@amd.com//Here are a couple convenience functions 51010796Sbrandon.potter@amd.comtemplate<class OS> 51110796Sbrandon.potter@amd.comstatic void 51210796Sbrandon.potter@amd.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 513360SN/A hst_stat *host, bool fakeTTY = false) 514360SN/A{ 515360SN/A typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 516360SN/A tgt_stat_buf tgt(addr); 517360SN/A convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 518360SN/A tgt.copyOut(mem); 519360SN/A} 52011759Sbrandon.potter@amd.com 5213113Sgblack@eecs.umich.edutemplate<class OS> 5223113Sgblack@eecs.umich.edustatic void 5233113Sgblack@eecs.umich.educopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5243113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5253113Sgblack@eecs.umich.edu{ 5263113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5273113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5283113Sgblack@eecs.umich.edu convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5293113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5303113Sgblack@eecs.umich.edu} 5313113Sgblack@eecs.umich.edu 5323113Sgblack@eecs.umich.edutemplate <class OS> 5333113Sgblack@eecs.umich.edustatic void 53412032Sandreas.sandberg@arm.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 5353113Sgblack@eecs.umich.edu hst_statfs *host) 5363113Sgblack@eecs.umich.edu{ 5374189Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 5384189Sgblack@eecs.umich.edu 5393113Sgblack@eecs.umich.edu tgt->f_type = TheISA::htog(host->f_type); 5403113Sgblack@eecs.umich.edu#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 5413113Sgblack@eecs.umich.edu tgt->f_bsize = TheISA::htog(host->f_iosize); 5423113Sgblack@eecs.umich.edu#else 5438737Skoansin.tan@gmail.com tgt->f_bsize = TheISA::htog(host->f_bsize); 5443113Sgblack@eecs.umich.edu#endif 5458737Skoansin.tan@gmail.com tgt->f_blocks = TheISA::htog(host->f_blocks); 5463277Sgblack@eecs.umich.edu tgt->f_bfree = TheISA::htog(host->f_bfree); 5475515SMichael.Adler@intel.com tgt->f_bavail = TheISA::htog(host->f_bavail); 5485515SMichael.Adler@intel.com tgt->f_files = TheISA::htog(host->f_files); 5495515SMichael.Adler@intel.com tgt->f_ffree = TheISA::htog(host->f_ffree); 5505515SMichael.Adler@intel.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 5515515SMichael.Adler@intel.com#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 5528737Skoansin.tan@gmail.com tgt->f_namelen = TheISA::htog(host->f_namemax); 5533277Sgblack@eecs.umich.edu tgt->f_frsize = TheISA::htog(host->f_bsize); 5548737Skoansin.tan@gmail.com#elif defined(__APPLE__) 5553277Sgblack@eecs.umich.edu tgt->f_namelen = 0; 5568737Skoansin.tan@gmail.com tgt->f_frsize = 0; 5573277Sgblack@eecs.umich.edu#else 5588737Skoansin.tan@gmail.com tgt->f_namelen = TheISA::htog(host->f_namelen); 5593113Sgblack@eecs.umich.edu tgt->f_frsize = TheISA::htog(host->f_frsize); 5603113Sgblack@eecs.umich.edu#endif 5613113Sgblack@eecs.umich.edu#if defined(__linux__) 5623113Sgblack@eecs.umich.edu memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 5638737Skoansin.tan@gmail.com#else 5643113Sgblack@eecs.umich.edu /* 5658737Skoansin.tan@gmail.com * The fields are different sizes per OS. Don't bother with 5663114Sgblack@eecs.umich.edu * f_spare or f_reserved on non-Linux for now. 5678737Skoansin.tan@gmail.com */ 5683114Sgblack@eecs.umich.edu memset(&tgt->f_spare, 0, sizeof(tgt->f_spare)); 5698737Skoansin.tan@gmail.com#endif 5703114Sgblack@eecs.umich.edu 5718737Skoansin.tan@gmail.com tgt.copyOut(mem); 57211906SBrandon.Potter@amd.com} 5734061Sgblack@eecs.umich.edu 5744061Sgblack@eecs.umich.edu/// Target ioctl() handler. For the most part, programs call ioctl() 5758737Skoansin.tan@gmail.com/// only to find out if their stdout is a tty, to determine whether to 5763113Sgblack@eecs.umich.edu/// do line or block buffering. We always claim that output fds are 5778737Skoansin.tan@gmail.com/// not TTYs to provide repeatable results. 5783113Sgblack@eecs.umich.edutemplate <class OS> 5793113Sgblack@eecs.umich.eduSyscallReturn 5803113Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 5813113Sgblack@eecs.umich.edu{ 5823113Sgblack@eecs.umich.edu int index = 0; 58312032Sandreas.sandberg@arm.com int tgt_fd = p->getSyscallArg(tc, index); 5843113Sgblack@eecs.umich.edu unsigned req = p->getSyscallArg(tc, index); 5853113Sgblack@eecs.umich.edu 5864189Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 5874189Sgblack@eecs.umich.edu 5883113Sgblack@eecs.umich.edu if (OS::isTtyReq(req)) 5893113Sgblack@eecs.umich.edu return -ENOTTY; 5903113Sgblack@eecs.umich.edu 5918737Skoansin.tan@gmail.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>((*p->fds)[tgt_fd]); 5923113Sgblack@eecs.umich.edu if (!dfdp) 5938737Skoansin.tan@gmail.com return -EBADF; 5943113Sgblack@eecs.umich.edu 5958737Skoansin.tan@gmail.com /** 5963113Sgblack@eecs.umich.edu * If the driver is valid, issue the ioctl through it. Otherwise, 5973113Sgblack@eecs.umich.edu * there's an implicit assumption that the device is a TTY type and we 5983113Sgblack@eecs.umich.edu * return that we do not have a valid TTY. 5993113Sgblack@eecs.umich.edu */ 6003113Sgblack@eecs.umich.edu EmulatedDriver *emul_driver = dfdp->getDriver(); 6013113Sgblack@eecs.umich.edu if (emul_driver) 6023113Sgblack@eecs.umich.edu return emul_driver->ioctl(p, tc, req); 60311906SBrandon.Potter@amd.com 6043113Sgblack@eecs.umich.edu /** 60512032Sandreas.sandberg@arm.com * For lack of a better return code, return ENOTTY. Ideally, we should 6068852Sandreas.hansson@arm.com * return something better here, but at least we issue the warning. 60711906SBrandon.Potter@amd.com */ 6083113Sgblack@eecs.umich.edu warn("Unsupported ioctl call (return ENOTTY): ioctl(%d, 0x%x, ...) @ \n", 6093113Sgblack@eecs.umich.edu tgt_fd, req, tc->pcState()); 6103113Sgblack@eecs.umich.edu return -ENOTTY; 6113113Sgblack@eecs.umich.edu} 6123113Sgblack@eecs.umich.edu 6133113Sgblack@eecs.umich.edutemplate <class OS> 6143113Sgblack@eecs.umich.edustatic SyscallReturn 6153113Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, Process *process, 61612032Sandreas.sandberg@arm.com ThreadContext *tc, int index) 6178852Sandreas.hansson@arm.com{ 61811906SBrandon.Potter@amd.com std::string path; 6193113Sgblack@eecs.umich.edu 6203113Sgblack@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 6213113Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6226686Stjones1@inf.ed.ac.uk return -EFAULT; 6233113Sgblack@eecs.umich.edu 6243113Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6253113Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 62611759Sbrandon.potter@amd.com int hostFlags = 0; 62712032Sandreas.sandberg@arm.com 62811759Sbrandon.potter@amd.com // translate open flags 62911759Sbrandon.potter@amd.com for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 63011759Sbrandon.potter@amd.com if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 63111759Sbrandon.potter@amd.com tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 63211759Sbrandon.potter@amd.com hostFlags |= OS::openFlagTable[i].hostFlag; 63311812Sbaz21@cam.ac.uk } 63411812Sbaz21@cam.ac.uk } 63511812Sbaz21@cam.ac.uk 63611759Sbrandon.potter@amd.com // any target flags left? 63711812Sbaz21@cam.ac.uk if (tgtFlags != 0) 63811759Sbrandon.potter@amd.com warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 63911759Sbrandon.potter@amd.com 64011759Sbrandon.potter@amd.com#ifdef __CYGWIN32__ 64111759Sbrandon.potter@amd.com hostFlags |= O_BINARY; 64211759Sbrandon.potter@amd.com#endif 64311759Sbrandon.potter@amd.com 64411759Sbrandon.potter@amd.com // Adjust path for current working directory 64511812Sbaz21@cam.ac.uk path = process->fullPath(path); 64611812Sbaz21@cam.ac.uk 64711812Sbaz21@cam.ac.uk DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 64811812Sbaz21@cam.ac.uk 64911812Sbaz21@cam.ac.uk if (startswith(path, "/dev/")) { 65011812Sbaz21@cam.ac.uk std::string filename = path.substr(strlen("/dev/")); 65111812Sbaz21@cam.ac.uk if (filename == "sysdev0") { 65211759Sbrandon.potter@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 65311759Sbrandon.potter@amd.com // We don't support it, so just punt. 65411812Sbaz21@cam.ac.uk warn("Ignoring open(%s, ...)\n", path); 65511812Sbaz21@cam.ac.uk return -ENOENT; 65611759Sbrandon.potter@amd.com } 65711812Sbaz21@cam.ac.uk 65811812Sbaz21@cam.ac.uk EmulatedDriver *drv = process->findDriver(filename); 65911812Sbaz21@cam.ac.uk if (drv) { 66011812Sbaz21@cam.ac.uk // the driver's open method will allocate a fd from the 66111812Sbaz21@cam.ac.uk // process if necessary. 66211812Sbaz21@cam.ac.uk return drv->open(process, tc, mode, hostFlags); 66311812Sbaz21@cam.ac.uk } 66411759Sbrandon.potter@amd.com 66511759Sbrandon.potter@amd.com // fall through here for pass through to host devices, such as 66611759Sbrandon.potter@amd.com // /dev/zero 66711759Sbrandon.potter@amd.com } 668378SN/A 669378SN/A int fd; 6709141Smarc.orr@gmail.com int local_errno; 6719141Smarc.orr@gmail.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 672360SN/A startswith(path, "/platform/") || startswith(path, "/sys/")) { 6731450SN/A // It's a proc/sys entry and requires special handling 67413995Sbrandon.potter@amd.com fd = OS::openSpecialFile(path, process, tc); 675360SN/A local_errno = ENOENT; 6766701Sgblack@eecs.umich.edu } else { 67713995Sbrandon.potter@amd.com // open the file 67813995Sbrandon.potter@amd.com fd = open(path.c_str(), hostFlags, mode); 67911856Sbrandon.potter@amd.com local_errno = errno; 68011856Sbrandon.potter@amd.com } 681360SN/A 68213907Salexandru.dutu@amd.com if (fd == -1) 683360SN/A return -local_errno; 68411856Sbrandon.potter@amd.com 68511856Sbrandon.potter@amd.com std::shared_ptr<FileFDEntry> ffdp = 68610496Ssteve.reinhardt@amd.com std::make_shared<FileFDEntry>(fd, hostFlags, path.c_str(), false); 68711856Sbrandon.potter@amd.com return process->fds->allocFD(ffdp); 68813902Sbrandon.potter@amd.com} 68913902Sbrandon.potter@amd.com 69013902Sbrandon.potter@amd.com/// Target open() handler. 69113995Sbrandon.potter@amd.comtemplate <class OS> 69213902Sbrandon.potter@amd.comSyscallReturn 69313902Sbrandon.potter@amd.comopenFunc(SyscallDesc *desc, int callnum, Process *process, 69413902Sbrandon.potter@amd.com ThreadContext *tc) 69513902Sbrandon.potter@amd.com{ 69613902Sbrandon.potter@amd.com return openFunc<OS>(desc, callnum, process, tc, 0); 69713902Sbrandon.potter@amd.com} 69813902Sbrandon.potter@amd.com 69913902Sbrandon.potter@amd.com/// Target openat() handler. 70013902Sbrandon.potter@amd.comtemplate <class OS> 70113902Sbrandon.potter@amd.comSyscallReturn 70213902Sbrandon.potter@amd.comopenatFunc(SyscallDesc *desc, int callnum, Process *process, 70313902Sbrandon.potter@amd.com ThreadContext *tc) 70413902Sbrandon.potter@amd.com{ 70513902Sbrandon.potter@amd.com int index = 0; 70613902Sbrandon.potter@amd.com int dirfd = process->getSyscallArg(tc, index); 70713902Sbrandon.potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 70813902Sbrandon.potter@amd.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 70913902Sbrandon.potter@amd.com return openFunc<OS>(desc, callnum, process, tc, 1); 71013902Sbrandon.potter@amd.com} 71113902Sbrandon.potter@amd.com 71213902Sbrandon.potter@amd.com/// Target unlinkat() handler. 71313902Sbrandon.potter@amd.comtemplate <class OS> 71413902Sbrandon.potter@amd.comSyscallReturn 71513902Sbrandon.potter@amd.comunlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 71613902Sbrandon.potter@amd.com ThreadContext *tc) 71713902Sbrandon.potter@amd.com{ 71813902Sbrandon.potter@amd.com int index = 0; 71913902Sbrandon.potter@amd.com int dirfd = process->getSyscallArg(tc, index); 72013902Sbrandon.potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 72113936SAndrea.Mondelli@ucf.edu warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 72213902Sbrandon.potter@amd.com 72313902Sbrandon.potter@amd.com return unlinkHelper(desc, callnum, process, tc, 1); 72413902Sbrandon.potter@amd.com} 72513902Sbrandon.potter@amd.com 72613936SAndrea.Mondelli@ucf.edu/// Target facessat() handler 72713902Sbrandon.potter@amd.comtemplate <class OS> 72813902Sbrandon.potter@amd.comSyscallReturn 72913902Sbrandon.potter@amd.comfaccessatFunc(SyscallDesc *desc, int callnum, Process *process, 73013902Sbrandon.potter@amd.com ThreadContext *tc) 73113902Sbrandon.potter@amd.com{ 73213902Sbrandon.potter@amd.com int index = 0; 73313902Sbrandon.potter@amd.com int dirfd = process->getSyscallArg(tc, index); 73413902Sbrandon.potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 73513902Sbrandon.potter@amd.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 73613902Sbrandon.potter@amd.com return accessFunc(desc, callnum, process, tc, 1); 73713902Sbrandon.potter@amd.com} 73813902Sbrandon.potter@amd.com 73913902Sbrandon.potter@amd.com/// Target readlinkat() handler 74013902Sbrandon.potter@amd.comtemplate <class OS> 74110496Ssteve.reinhardt@amd.comSyscallReturn 74211856Sbrandon.potter@amd.comreadlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 74311856Sbrandon.potter@amd.com ThreadContext *tc) 74411856Sbrandon.potter@amd.com{ 74511856Sbrandon.potter@amd.com int index = 0; 74611856Sbrandon.potter@amd.com int dirfd = process->getSyscallArg(tc, index); 74710930Sbrandon.potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 7489141Smarc.orr@gmail.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 749360SN/A return readlinkFunc(desc, callnum, process, tc, 1); 750360SN/A} 751360SN/A 75211907SBrandon.Potter@amd.com/// Target renameat() handler. 75313995Sbrandon.potter@amd.comtemplate <class OS> 754360SN/ASyscallReturn 75511907SBrandon.Potter@amd.comrenameatFunc(SyscallDesc *desc, int callnum, Process *process, 75613995Sbrandon.potter@amd.com ThreadContext *tc) 75711907SBrandon.Potter@amd.com{ 75811907SBrandon.Potter@amd.com int index = 0; 75911907SBrandon.Potter@amd.com 76011907SBrandon.Potter@amd.com int olddirfd = process->getSyscallArg(tc, index); 76111907SBrandon.Potter@amd.com if (olddirfd != OS::TGT_AT_FDCWD) 76211907SBrandon.Potter@amd.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 76311907SBrandon.Potter@amd.com 76411907SBrandon.Potter@amd.com std::string old_name; 76511907SBrandon.Potter@amd.com 76611907SBrandon.Potter@amd.com if (!tc->getMemProxy().tryReadString(old_name, 76711907SBrandon.Potter@amd.com process->getSyscallArg(tc, index))) 76811907SBrandon.Potter@amd.com return -EFAULT; 76911907SBrandon.Potter@amd.com 770360SN/A int newdirfd = process->getSyscallArg(tc, index); 77111907SBrandon.Potter@amd.com if (newdirfd != OS::TGT_AT_FDCWD) 7721458SN/A warn("renameat: third argument not AT_FDCWD; unlikely to work"); 773360SN/A 77411907SBrandon.Potter@amd.com std::string new_name; 77511907SBrandon.Potter@amd.com 77611907SBrandon.Potter@amd.com if (!tc->getMemProxy().tryReadString(new_name, 77711907SBrandon.Potter@amd.com process->getSyscallArg(tc, index))) 77811907SBrandon.Potter@amd.com return -EFAULT; 77911907SBrandon.Potter@amd.com 78011907SBrandon.Potter@amd.com // Adjust path for current working directory 78111907SBrandon.Potter@amd.com old_name = process->fullPath(old_name); 78211907SBrandon.Potter@amd.com new_name = process->fullPath(new_name); 78311907SBrandon.Potter@amd.com 784360SN/A int result = rename(old_name.c_str(), new_name.c_str()); 78511907SBrandon.Potter@amd.com return (result == -1) ? -errno : result; 78611907SBrandon.Potter@amd.com} 78711907SBrandon.Potter@amd.com 788360SN/A/// Target sysinfo() handler. 789360SN/Atemplate <class OS> 79011907SBrandon.Potter@amd.comSyscallReturn 79111907SBrandon.Potter@amd.comsysinfoFunc(SyscallDesc *desc, int callnum, Process *process, 79211907SBrandon.Potter@amd.com ThreadContext *tc) 79311907SBrandon.Potter@amd.com{ 794360SN/A 79511907SBrandon.Potter@amd.com int index = 0; 796360SN/A TypedBufferArg<typename OS::tgt_sysinfo> 797360SN/A sysinfo(process->getSyscallArg(tc, index)); 79811907SBrandon.Potter@amd.com 7993669Sbinkertn@umich.edu sysinfo->uptime = seconds_since_epoch; 80011907SBrandon.Potter@amd.com sysinfo->totalram = process->system->memSize(); 80111907SBrandon.Potter@amd.com sysinfo->mem_unit = 1; 80211907SBrandon.Potter@amd.com 80311907SBrandon.Potter@amd.com sysinfo.copyOut(tc->getMemProxy()); 80411907SBrandon.Potter@amd.com 80511907SBrandon.Potter@amd.com return 0; 80611907SBrandon.Potter@amd.com} 80711907SBrandon.Potter@amd.com 80811907SBrandon.Potter@amd.com/// Target chmod() handler. 80911907SBrandon.Potter@amd.comtemplate <class OS> 81011907SBrandon.Potter@amd.comSyscallReturn 81111907SBrandon.Potter@amd.comchmodFunc(SyscallDesc *desc, int callnum, Process *process, 81213883Sdavid.hashe@amd.com ThreadContext *tc) 81313883Sdavid.hashe@amd.com{ 81413883Sdavid.hashe@amd.com std::string path; 81513883Sdavid.hashe@amd.com 81613883Sdavid.hashe@amd.com int index = 0; 81711907SBrandon.Potter@amd.com if (!tc->getMemProxy().tryReadString(path, 81811907SBrandon.Potter@amd.com process->getSyscallArg(tc, index))) { 81911907SBrandon.Potter@amd.com return -EFAULT; 82011907SBrandon.Potter@amd.com } 82111907SBrandon.Potter@amd.com 82213883Sdavid.hashe@amd.com uint32_t mode = process->getSyscallArg(tc, index); 82313883Sdavid.hashe@amd.com mode_t hostMode = 0; 82411907SBrandon.Potter@amd.com 8251706SN/A // XXX translate mode flags via OS::something??? 82611907SBrandon.Potter@amd.com hostMode = mode; 82711907SBrandon.Potter@amd.com 82811907SBrandon.Potter@amd.com // Adjust path for current working directory 82911907SBrandon.Potter@amd.com path = process->fullPath(path); 83011907SBrandon.Potter@amd.com 83111907SBrandon.Potter@amd.com // do the chmod 83213883Sdavid.hashe@amd.com int result = chmod(path.c_str(), hostMode); 83313883Sdavid.hashe@amd.com if (result < 0) 83411907SBrandon.Potter@amd.com return -errno; 83511907SBrandon.Potter@amd.com 83611907SBrandon.Potter@amd.com return 0; 83711907SBrandon.Potter@amd.com} 83813883Sdavid.hashe@amd.com 83913995Sbrandon.potter@amd.com 84010496Ssteve.reinhardt@amd.com/// Target fchmod() handler. 84111907SBrandon.Potter@amd.comtemplate <class OS> 84211907SBrandon.Potter@amd.comSyscallReturn 84311907SBrandon.Potter@amd.comfchmodFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 84411907SBrandon.Potter@amd.com{ 84510496Ssteve.reinhardt@amd.com int index = 0; 84610496Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 84711907SBrandon.Potter@amd.com uint32_t mode = p->getSyscallArg(tc, index); 84813883Sdavid.hashe@amd.com 84913883Sdavid.hashe@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 85013883Sdavid.hashe@amd.com if (!ffdp) 85113883Sdavid.hashe@amd.com return -EBADF; 85213883Sdavid.hashe@amd.com int sim_fd = ffdp->getSimFD(); 85313883Sdavid.hashe@amd.com 85413883Sdavid.hashe@amd.com mode_t hostMode = mode; 85513883Sdavid.hashe@amd.com 85613883Sdavid.hashe@amd.com int result = fchmod(sim_fd, hostMode); 85713883Sdavid.hashe@amd.com 85813883Sdavid.hashe@amd.com return (result < 0) ? -errno : 0; 85913883Sdavid.hashe@amd.com} 86013883Sdavid.hashe@amd.com 86113883Sdavid.hashe@amd.com/// Target mremap() handler. 86213883Sdavid.hashe@amd.comtemplate <class OS> 86313883Sdavid.hashe@amd.comSyscallReturn 86413883Sdavid.hashe@amd.commremapFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 86513883Sdavid.hashe@amd.com{ 86613883Sdavid.hashe@amd.com int index = 0; 86713883Sdavid.hashe@amd.com Addr start = process->getSyscallArg(tc, index); 86813883Sdavid.hashe@amd.com uint64_t old_length = process->getSyscallArg(tc, index); 86913883Sdavid.hashe@amd.com uint64_t new_length = process->getSyscallArg(tc, index); 87011907SBrandon.Potter@amd.com uint64_t flags = process->getSyscallArg(tc, index); 87111907SBrandon.Potter@amd.com uint64_t provided_address = 0; 87213883Sdavid.hashe@amd.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 87311907SBrandon.Potter@amd.com 87413994Santhony.gutierrez@amd.com if (use_provided_address) 87511907SBrandon.Potter@amd.com provided_address = process->getSyscallArg(tc, index); 87613883Sdavid.hashe@amd.com 87713883Sdavid.hashe@amd.com if ((start % TheISA::PageBytes != 0) || 87813883Sdavid.hashe@amd.com (provided_address % TheISA::PageBytes != 0)) { 87913883Sdavid.hashe@amd.com warn("mremap failing: arguments not page aligned"); 88011907SBrandon.Potter@amd.com return -EINVAL; 88111907SBrandon.Potter@amd.com } 88213883Sdavid.hashe@amd.com 88313883Sdavid.hashe@amd.com new_length = roundUp(new_length, TheISA::PageBytes); 88411907SBrandon.Potter@amd.com 88511907SBrandon.Potter@amd.com if (new_length > old_length) { 88611907SBrandon.Potter@amd.com if ((start + old_length) == process->mmap_end && 88713883Sdavid.hashe@amd.com (!use_provided_address || provided_address == start)) { 88813883Sdavid.hashe@amd.com uint64_t diff = new_length - old_length; 88913883Sdavid.hashe@amd.com process->allocateMem(process->mmap_end, diff); 89011907SBrandon.Potter@amd.com process->mmap_end += diff; 89111907SBrandon.Potter@amd.com return start; 892360SN/A } else { 89311907SBrandon.Potter@amd.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 89411907SBrandon.Potter@amd.com warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 89511907SBrandon.Potter@amd.com return -ENOMEM; 89611907SBrandon.Potter@amd.com } else { 89711907SBrandon.Potter@amd.com uint64_t new_start = use_provided_address ? 89811907SBrandon.Potter@amd.com provided_address : process->mmap_end; 89911907SBrandon.Potter@amd.com process->pTable->remap(start, old_length, new_start); 90011907SBrandon.Potter@amd.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 90111907SBrandon.Potter@amd.com new_start, new_start + new_length, 90211907SBrandon.Potter@amd.com new_length - old_length); 90313883Sdavid.hashe@amd.com // add on the remaining unallocated pages 90413883Sdavid.hashe@amd.com process->allocateMem(new_start + old_length, 90513883Sdavid.hashe@amd.com new_length - old_length, 90611907SBrandon.Potter@amd.com use_provided_address /* clobber */); 907360SN/A if (!use_provided_address) 908360SN/A process->mmap_end += new_length; 90910027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 91010027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 91110027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 91213995Sbrandon.potter@amd.com // @todo: increase mmap_end? 91310027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 91413995Sbrandon.potter@amd.com } 91510027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 91610027SChris.Adeniyi-Jones@arm.com return new_start; 91710027SChris.Adeniyi-Jones@arm.com } 91810027SChris.Adeniyi-Jones@arm.com } 91910027SChris.Adeniyi-Jones@arm.com } else { 92013995Sbrandon.potter@amd.com if (use_provided_address && provided_address != start) 92110027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 92213995Sbrandon.potter@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 92310027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 92410027SChris.Adeniyi-Jones@arm.com } 92510633Smichaelupton@gmail.com} 92610633Smichaelupton@gmail.com 92710633Smichaelupton@gmail.com/// Target stat() handler. 92813995Sbrandon.potter@amd.comtemplate <class OS> 92910633Smichaelupton@gmail.comSyscallReturn 93010633Smichaelupton@gmail.comstatFunc(SyscallDesc *desc, int callnum, Process *process, 93113995Sbrandon.potter@amd.com ThreadContext *tc) 93210633Smichaelupton@gmail.com{ 93310633Smichaelupton@gmail.com std::string path; 93410633Smichaelupton@gmail.com 93510633Smichaelupton@gmail.com int index = 0; 93613995Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 93710633Smichaelupton@gmail.com process->getSyscallArg(tc, index))) { 93810633Smichaelupton@gmail.com return -EFAULT; 93910203SAli.Saidi@ARM.com } 94010203SAli.Saidi@ARM.com Addr bufPtr = process->getSyscallArg(tc, index); 94110203SAli.Saidi@ARM.com 94213995Sbrandon.potter@amd.com // Adjust path for current working directory 94310203SAli.Saidi@ARM.com path = process->fullPath(path); 94410203SAli.Saidi@ARM.com 94513995Sbrandon.potter@amd.com struct stat hostBuf; 94610203SAli.Saidi@ARM.com int result = stat(path.c_str(), &hostBuf); 94710203SAli.Saidi@ARM.com 94810203SAli.Saidi@ARM.com if (result < 0) 94913995Sbrandon.potter@amd.com return -errno; 95010203SAli.Saidi@ARM.com 95110203SAli.Saidi@ARM.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 95210203SAli.Saidi@ARM.com 95310203SAli.Saidi@ARM.com return 0; 95410203SAli.Saidi@ARM.com} 95513995Sbrandon.potter@amd.com 95610203SAli.Saidi@ARM.com 95710203SAli.Saidi@ARM.com/// Target stat64() handler. 95813995Sbrandon.potter@amd.comtemplate <class OS> 95910203SAli.Saidi@ARM.comSyscallReturn 96010203SAli.Saidi@ARM.comstat64Func(SyscallDesc *desc, int callnum, Process *process, 96110203SAli.Saidi@ARM.com ThreadContext *tc) 96213995Sbrandon.potter@amd.com{ 96310203SAli.Saidi@ARM.com std::string path; 96410203SAli.Saidi@ARM.com 96510850SGiacomo.Gabrielli@arm.com int index = 0; 96610850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(path, 96710850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 96813995Sbrandon.potter@amd.com return -EFAULT; 96910850SGiacomo.Gabrielli@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 97010850SGiacomo.Gabrielli@arm.com 97113995Sbrandon.potter@amd.com // Adjust path for current working directory 97210850SGiacomo.Gabrielli@arm.com path = process->fullPath(path); 97310850SGiacomo.Gabrielli@arm.com 97410850SGiacomo.Gabrielli@arm.com#if NO_STAT64 97510850SGiacomo.Gabrielli@arm.com struct stat hostBuf; 97610850SGiacomo.Gabrielli@arm.com int result = stat(path.c_str(), &hostBuf); 97710850SGiacomo.Gabrielli@arm.com#else 97810850SGiacomo.Gabrielli@arm.com struct stat64 hostBuf; 97910850SGiacomo.Gabrielli@arm.com int result = stat64(path.c_str(), &hostBuf); 98010850SGiacomo.Gabrielli@arm.com#endif 98110850SGiacomo.Gabrielli@arm.com 98210850SGiacomo.Gabrielli@arm.com if (result < 0) 98310850SGiacomo.Gabrielli@arm.com return -errno; 98410850SGiacomo.Gabrielli@arm.com 98510850SGiacomo.Gabrielli@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 98610850SGiacomo.Gabrielli@arm.com 98710850SGiacomo.Gabrielli@arm.com return 0; 98810850SGiacomo.Gabrielli@arm.com} 98910850SGiacomo.Gabrielli@arm.com 99010850SGiacomo.Gabrielli@arm.com 99110850SGiacomo.Gabrielli@arm.com/// Target fstatat64() handler. 99210850SGiacomo.Gabrielli@arm.comtemplate <class OS> 99313883Sdavid.hashe@amd.comSyscallReturn 99413883Sdavid.hashe@amd.comfstatat64Func(SyscallDesc *desc, int callnum, Process *process, 99513883Sdavid.hashe@amd.com ThreadContext *tc) 99610850SGiacomo.Gabrielli@arm.com{ 99710850SGiacomo.Gabrielli@arm.com int index = 0; 99810850SGiacomo.Gabrielli@arm.com int dirfd = process->getSyscallArg(tc, index); 99910850SGiacomo.Gabrielli@arm.com if (dirfd != OS::TGT_AT_FDCWD) 100010850SGiacomo.Gabrielli@arm.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 10016640Svince@csl.cornell.edu 10026640Svince@csl.cornell.edu std::string path; 10036640Svince@csl.cornell.edu if (!tc->getMemProxy().tryReadString(path, 100413995Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) 10056640Svince@csl.cornell.edu return -EFAULT; 10066701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 100713995Sbrandon.potter@amd.com 100813995Sbrandon.potter@amd.com // Adjust path for current working directory 10096701Sgblack@eecs.umich.edu path = process->fullPath(path); 101010793Sbrandon.potter@amd.com 10116640Svince@csl.cornell.edu#if NO_STAT64 101211758Sbrandon.potter@amd.com struct stat hostBuf; 101311758Sbrandon.potter@amd.com int result = stat(path.c_str(), &hostBuf); 101411758Sbrandon.potter@amd.com#else 10156640Svince@csl.cornell.edu struct stat64 hostBuf; 10168706Sandreas.hansson@arm.com int result = stat64(path.c_str(), &hostBuf); 10176640Svince@csl.cornell.edu#endif 10186701Sgblack@eecs.umich.edu 10196640Svince@csl.cornell.edu if (result < 0) 1020360SN/A return -errno; 10211999SN/A 10221999SN/A copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10231999SN/A 102413995Sbrandon.potter@amd.com return 0; 10251999SN/A} 10261999SN/A 102713995Sbrandon.potter@amd.com 10281999SN/A/// Target fstat64() handler. 10296701Sgblack@eecs.umich.edutemplate <class OS> 10308852Sandreas.hansson@arm.comSyscallReturn 10316701Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 10321999SN/A{ 10336701Sgblack@eecs.umich.edu int index = 0; 10341999SN/A int tgt_fd = p->getSyscallArg(tc, index); 10356701Sgblack@eecs.umich.edu Addr bufPtr = p->getSyscallArg(tc, index); 10361999SN/A 10371999SN/A auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 10381999SN/A if (!ffdp) 10391999SN/A return -EBADF; 10401999SN/A int sim_fd = ffdp->getSimFD(); 104113883Sdavid.hashe@amd.com 104213883Sdavid.hashe@amd.com#if NO_STAT64 10433669Sbinkertn@umich.edu struct stat hostBuf; 10441999SN/A int result = fstat(sim_fd, &hostBuf); 10451999SN/A#else 10461999SN/A struct stat64 hostBuf; 10472218SN/A int result = fstat64(sim_fd, &hostBuf); 10481999SN/A#endif 10491999SN/A 10501999SN/A if (result < 0) 10511999SN/A return -errno; 105213570Sbrandon.potter@amd.com 105313570Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 105413995Sbrandon.potter@amd.com 105513570Sbrandon.potter@amd.com return 0; 105613570Sbrandon.potter@amd.com} 105713995Sbrandon.potter@amd.com 105813570Sbrandon.potter@amd.com 105913570Sbrandon.potter@amd.com/// Target lstat() handler. 106013570Sbrandon.potter@amd.comtemplate <class OS> 106113570Sbrandon.potter@amd.comSyscallReturn 106213570Sbrandon.potter@amd.comlstatFunc(SyscallDesc *desc, int callnum, Process *process, 106313570Sbrandon.potter@amd.com ThreadContext *tc) 106413570Sbrandon.potter@amd.com{ 106513570Sbrandon.potter@amd.com std::string path; 106613570Sbrandon.potter@amd.com 106713570Sbrandon.potter@amd.com int index = 0; 106813570Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 106913570Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 107013570Sbrandon.potter@amd.com return -EFAULT; 107113570Sbrandon.potter@amd.com } 107213570Sbrandon.potter@amd.com Addr bufPtr = process->getSyscallArg(tc, index); 107313570Sbrandon.potter@amd.com 107413570Sbrandon.potter@amd.com // Adjust path for current working directory 107513570Sbrandon.potter@amd.com path = process->fullPath(path); 107613570Sbrandon.potter@amd.com 107713570Sbrandon.potter@amd.com struct stat hostBuf; 107813570Sbrandon.potter@amd.com int result = lstat(path.c_str(), &hostBuf); 107913570Sbrandon.potter@amd.com 108013570Sbrandon.potter@amd.com if (result < 0) 108113570Sbrandon.potter@amd.com return -errno; 108213570Sbrandon.potter@amd.com 108313570Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 108413570Sbrandon.potter@amd.com 108513570Sbrandon.potter@amd.com return 0; 108613570Sbrandon.potter@amd.com} 108713570Sbrandon.potter@amd.com 108813570Sbrandon.potter@amd.com/// Target lstat64() handler. 108913570Sbrandon.potter@amd.comtemplate <class OS> 109013570Sbrandon.potter@amd.comSyscallReturn 109113570Sbrandon.potter@amd.comlstat64Func(SyscallDesc *desc, int callnum, Process *process, 109213570Sbrandon.potter@amd.com ThreadContext *tc) 109313570Sbrandon.potter@amd.com{ 109413570Sbrandon.potter@amd.com std::string path; 109513570Sbrandon.potter@amd.com 109613570Sbrandon.potter@amd.com int index = 0; 109713570Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 109813570Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 109913570Sbrandon.potter@amd.com return -EFAULT; 110013570Sbrandon.potter@amd.com } 110113570Sbrandon.potter@amd.com Addr bufPtr = process->getSyscallArg(tc, index); 110213570Sbrandon.potter@amd.com 110313570Sbrandon.potter@amd.com // Adjust path for current working directory 110413570Sbrandon.potter@amd.com path = process->fullPath(path); 110513570Sbrandon.potter@amd.com 110613570Sbrandon.potter@amd.com#if NO_STAT64 110713570Sbrandon.potter@amd.com struct stat hostBuf; 110813570Sbrandon.potter@amd.com int result = lstat(path.c_str(), &hostBuf); 110913570Sbrandon.potter@amd.com#else 111013570Sbrandon.potter@amd.com struct stat64 hostBuf; 111113570Sbrandon.potter@amd.com int result = lstat64(path.c_str(), &hostBuf); 111213570Sbrandon.potter@amd.com#endif 111313570Sbrandon.potter@amd.com 111413570Sbrandon.potter@amd.com if (result < 0) 111513570Sbrandon.potter@amd.com return -errno; 111613570Sbrandon.potter@amd.com 111713570Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 111813570Sbrandon.potter@amd.com 111913570Sbrandon.potter@amd.com return 0; 112013570Sbrandon.potter@amd.com} 112113570Sbrandon.potter@amd.com 112213570Sbrandon.potter@amd.com/// Target fstat() handler. 112313570Sbrandon.potter@amd.comtemplate <class OS> 112413570Sbrandon.potter@amd.comSyscallReturn 112513570Sbrandon.potter@amd.comfstatFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 112613570Sbrandon.potter@amd.com{ 11271999SN/A int index = 0; 11281999SN/A int tgt_fd = p->getSyscallArg(tc, index); 11291999SN/A Addr bufPtr = p->getSyscallArg(tc, index); 11301999SN/A 113113995Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 11321999SN/A 11336701Sgblack@eecs.umich.edu auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 113413995Sbrandon.potter@amd.com if (!ffdp) 113511856Sbrandon.potter@amd.com return -EBADF; 113611856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 113710931Sbrandon.potter@amd.com 113811856Sbrandon.potter@amd.com struct stat hostBuf; 113911856Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 11401999SN/A 114111856Sbrandon.potter@amd.com if (result < 0) 11421999SN/A return -errno; 114311856Sbrandon.potter@amd.com 11441999SN/A copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 114511856Sbrandon.potter@amd.com 11461999SN/A return 0; 114711856Sbrandon.potter@amd.com} 11481999SN/A 11491999SN/A 11505877Shsul@eecs.umich.edu/// Target statfs() handler. 11515877Shsul@eecs.umich.edutemplate <class OS> 11525877Shsul@eecs.umich.eduSyscallReturn 115313995Sbrandon.potter@amd.comstatfsFunc(SyscallDesc *desc, int callnum, Process *process, 11545877Shsul@eecs.umich.edu ThreadContext *tc) 11556701Sgblack@eecs.umich.edu{ 115613995Sbrandon.potter@amd.com#if NO_STATFS 11576701Sgblack@eecs.umich.edu warn("Host OS cannot support calls to statfs. Ignoring syscall"); 11586701Sgblack@eecs.umich.edu#else 11596701Sgblack@eecs.umich.edu std::string path; 11606701Sgblack@eecs.umich.edu 116110027SChris.Adeniyi-Jones@arm.com int index = 0; 116210027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 116310027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) { 116410027SChris.Adeniyi-Jones@arm.com return -EFAULT; 116510027SChris.Adeniyi-Jones@arm.com } 11665877Shsul@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 116710318Sandreas.hansson@arm.com 116810318Sandreas.hansson@arm.com // Adjust path for current working directory 11695877Shsul@eecs.umich.edu path = process->fullPath(path); 11705877Shsul@eecs.umich.edu 11715877Shsul@eecs.umich.edu struct statfs hostBuf; 11725877Shsul@eecs.umich.edu int result = statfs(path.c_str(), &hostBuf); 117310486Stjablin@gmail.com 117410486Stjablin@gmail.com if (result < 0) 11755877Shsul@eecs.umich.edu return -errno; 117611905SBrandon.Potter@amd.com 117711905SBrandon.Potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 117811905SBrandon.Potter@amd.com#endif 117911905SBrandon.Potter@amd.com return 0; 118010027SChris.Adeniyi-Jones@arm.com} 118112206Srico.amslinger@informatik.uni-augsburg.de 118212206Srico.amslinger@informatik.uni-augsburg.de 11835877Shsul@eecs.umich.edu/// Target fstatfs() handler. 118411905SBrandon.Potter@amd.comtemplate <class OS> 118511905SBrandon.Potter@amd.comSyscallReturn 11865877Shsul@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 11875877Shsul@eecs.umich.edu{ 118810027SChris.Adeniyi-Jones@arm.com int index = 0; 11895877Shsul@eecs.umich.edu int tgt_fd = p->getSyscallArg(tc, index); 11905877Shsul@eecs.umich.edu Addr bufPtr = p->getSyscallArg(tc, index); 11915877Shsul@eecs.umich.edu 119212206Srico.amslinger@informatik.uni-augsburg.de auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 119312206Srico.amslinger@informatik.uni-augsburg.de if (!ffdp) 119412206Srico.amslinger@informatik.uni-augsburg.de return -EBADF; 119512206Srico.amslinger@informatik.uni-augsburg.de int sim_fd = ffdp->getSimFD(); 119612206Srico.amslinger@informatik.uni-augsburg.de 119712206Srico.amslinger@informatik.uni-augsburg.de struct statfs hostBuf; 119812206Srico.amslinger@informatik.uni-augsburg.de int result = fstatfs(sim_fd, &hostBuf); 119912206Srico.amslinger@informatik.uni-augsburg.de 120012206Srico.amslinger@informatik.uni-augsburg.de if (result < 0) 120110027SChris.Adeniyi-Jones@arm.com return -errno; 120210027SChris.Adeniyi-Jones@arm.com 120310027SChris.Adeniyi-Jones@arm.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 120410027SChris.Adeniyi-Jones@arm.com 12055877Shsul@eecs.umich.edu return 0; 120610027SChris.Adeniyi-Jones@arm.com} 120710027SChris.Adeniyi-Jones@arm.com 120810027SChris.Adeniyi-Jones@arm.com 120910027SChris.Adeniyi-Jones@arm.com/// Target writev() handler. 121012206Srico.amslinger@informatik.uni-augsburg.detemplate <class OS> 121112206Srico.amslinger@informatik.uni-augsburg.deSyscallReturn 121212206Srico.amslinger@informatik.uni-augsburg.dewritevFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 121312206Srico.amslinger@informatik.uni-augsburg.de{ 121410027SChris.Adeniyi-Jones@arm.com int index = 0; 121510027SChris.Adeniyi-Jones@arm.com int tgt_fd = p->getSyscallArg(tc, index); 121610027SChris.Adeniyi-Jones@arm.com 121710027SChris.Adeniyi-Jones@arm.com auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 121810027SChris.Adeniyi-Jones@arm.com if (!hbfdp) 121910027SChris.Adeniyi-Jones@arm.com return -EBADF; 12205877Shsul@eecs.umich.edu int sim_fd = hbfdp->getSimFD(); 12215877Shsul@eecs.umich.edu 12225877Shsul@eecs.umich.edu SETranslatingPortProxy &prox = tc->getMemProxy(); 122310027SChris.Adeniyi-Jones@arm.com uint64_t tiov_base = p->getSyscallArg(tc, index); 122410027SChris.Adeniyi-Jones@arm.com size_t count = p->getSyscallArg(tc, index); 12258601Ssteve.reinhardt@amd.com struct iovec hiov[count]; 122610027SChris.Adeniyi-Jones@arm.com for (size_t i = 0; i < count; ++i) { 12275877Shsul@eecs.umich.edu typename OS::tgt_iovec tiov; 12285877Shsul@eecs.umich.edu 12291999SN/A prox.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 1230378SN/A (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 1231360SN/A hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12321450SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 123313995Sbrandon.potter@amd.com prox.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 1234360SN/A hiov[i].iov_len); 1235360SN/A } 123613995Sbrandon.potter@amd.com 1237360SN/A int result = writev(sim_fd, hiov, count); 12386701Sgblack@eecs.umich.edu 12398852Sandreas.hansson@arm.com for (size_t i = 0; i < count; ++i) 12406701Sgblack@eecs.umich.edu delete [] (char *)hiov[i].iov_base; 12416701Sgblack@eecs.umich.edu 12426701Sgblack@eecs.umich.edu if (result < 0) 12436701Sgblack@eecs.umich.edu return -errno; 1244360SN/A 124513883Sdavid.hashe@amd.com return result; 124613883Sdavid.hashe@amd.com} 12473669Sbinkertn@umich.edu 1248360SN/A/// Real mmap handler. 1249360SN/Atemplate <class OS> 1250360SN/ASyscallReturn 1251360SN/AmmapImpl(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 12522218SN/A bool is_mmap2) 1253360SN/A{ 12548706Sandreas.hansson@arm.com int index = 0; 1255360SN/A Addr start = p->getSyscallArg(tc, index); 12561458SN/A uint64_t length = p->getSyscallArg(tc, index); 1257360SN/A int prot = p->getSyscallArg(tc, index); 1258360SN/A int tgt_flags = p->getSyscallArg(tc, index); 1259360SN/A int tgt_fd = p->getSyscallArg(tc, index); 12605074Ssaidi@eecs.umich.edu int offset = p->getSyscallArg(tc, index); 12615074Ssaidi@eecs.umich.edu 12625074Ssaidi@eecs.umich.edu if (is_mmap2) 126313995Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12645074Ssaidi@eecs.umich.edu 12655074Ssaidi@eecs.umich.edu if (start & (TheISA::PageBytes - 1) || 126613995Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 12675074Ssaidi@eecs.umich.edu (tgt_flags & OS::TGT_MAP_PRIVATE && 12686701Sgblack@eecs.umich.edu tgt_flags & OS::TGT_MAP_SHARED) || 12698852Sandreas.hansson@arm.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 12706701Sgblack@eecs.umich.edu !(tgt_flags & OS::TGT_MAP_SHARED)) || 12715074Ssaidi@eecs.umich.edu !length) { 12726701Sgblack@eecs.umich.edu return -EINVAL; 12735074Ssaidi@eecs.umich.edu } 127413883Sdavid.hashe@amd.com 127513883Sdavid.hashe@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 12765074Ssaidi@eecs.umich.edu // With shared mmaps, there are two cases to consider: 12775208Ssaidi@eecs.umich.edu // 1) anonymous: writes should modify the mapping and this should be 12785208Ssaidi@eecs.umich.edu // visible to observers who share the mapping. Currently, it's 12795208Ssaidi@eecs.umich.edu // difficult to update the shared mapping because there's no 12805208Ssaidi@eecs.umich.edu // structure which maintains information about the which virtual 12815074Ssaidi@eecs.umich.edu // memory areas are shared. If that structure existed, it would be 12825074Ssaidi@eecs.umich.edu // possible to make the translations point to the same frames. 12835208Ssaidi@eecs.umich.edu // 2) file-backed: writes should modify the mapping and the file 12845074Ssaidi@eecs.umich.edu // which is backed by the mapping. The shared mapping problem is the 12855074Ssaidi@eecs.umich.edu // same as what was mentioned about the anonymous mappings. For 12865074Ssaidi@eecs.umich.edu // file-backed mappings, the writes to the file are difficult 12875074Ssaidi@eecs.umich.edu // because it requires syncing what the mapping holds with the file 12888706Sandreas.hansson@arm.com // that resides on the host system. So, any write on a real system 12895074Ssaidi@eecs.umich.edu // would cause the change to be propagated to the file mapping at 12905074Ssaidi@eecs.umich.edu // some point in the future (the inode is tracked along with the 12915074Ssaidi@eecs.umich.edu // mapping). This isn't guaranteed to always happen, but it usually 12925074Ssaidi@eecs.umich.edu // works well enough. The guarantee is provided by the msync system 12935074Ssaidi@eecs.umich.edu // call. We could force the change through with shared mappings with 129410027SChris.Adeniyi-Jones@arm.com // a call to msync, but that again would require more information 129510027SChris.Adeniyi-Jones@arm.com // than we currently maintain. 129610027SChris.Adeniyi-Jones@arm.com warn("mmap: writing to shared mmap region is currently " 129713995Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 129810027SChris.Adeniyi-Jones@arm.com "will not be propagated to the host or shared mappings"); 129910027SChris.Adeniyi-Jones@arm.com } 130013995Sbrandon.potter@amd.com 130110027SChris.Adeniyi-Jones@arm.com length = roundUp(length, TheISA::PageBytes); 130210027SChris.Adeniyi-Jones@arm.com 130310793Sbrandon.potter@amd.com int sim_fd = -1; 130410027SChris.Adeniyi-Jones@arm.com uint8_t *pmap = nullptr; 130510027SChris.Adeniyi-Jones@arm.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 130610027SChris.Adeniyi-Jones@arm.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 130710027SChris.Adeniyi-Jones@arm.com 130810027SChris.Adeniyi-Jones@arm.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>(fdep); 130910027SChris.Adeniyi-Jones@arm.com if (dfdp) { 131010027SChris.Adeniyi-Jones@arm.com EmulatedDriver *emul_driver = dfdp->getDriver(); 131113883Sdavid.hashe@amd.com return emul_driver->mmap(p, tc, start, length, prot, 131213883Sdavid.hashe@amd.com tgt_flags, tgt_fd, offset); 131310027SChris.Adeniyi-Jones@arm.com } 131410027SChris.Adeniyi-Jones@arm.com 131510027SChris.Adeniyi-Jones@arm.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 131610027SChris.Adeniyi-Jones@arm.com if (!ffdp) 131710027SChris.Adeniyi-Jones@arm.com return -EBADF; 131810027SChris.Adeniyi-Jones@arm.com sim_fd = ffdp->getSimFD(); 131910027SChris.Adeniyi-Jones@arm.com 132010027SChris.Adeniyi-Jones@arm.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 132110027SChris.Adeniyi-Jones@arm.com sim_fd, offset); 132210027SChris.Adeniyi-Jones@arm.com 132310027SChris.Adeniyi-Jones@arm.com if (pmap == (decltype(pmap))-1) { 132410027SChris.Adeniyi-Jones@arm.com warn("mmap: failed to map file into host address space"); 132510027SChris.Adeniyi-Jones@arm.com return -errno; 132610027SChris.Adeniyi-Jones@arm.com } 132710027SChris.Adeniyi-Jones@arm.com } 132810027SChris.Adeniyi-Jones@arm.com 132910027SChris.Adeniyi-Jones@arm.com // Extend global mmap region if necessary. Note that we ignore the 133010027SChris.Adeniyi-Jones@arm.com // start address unless MAP_FIXED is specified. 13311999SN/A if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 13321999SN/A start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 13331999SN/A p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 133413995Sbrandon.potter@amd.com } 13351999SN/A 13366701Sgblack@eecs.umich.edu DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 133713995Sbrandon.potter@amd.com start, start + length - 1); 133811856Sbrandon.potter@amd.com 133911856Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 134010931Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 134111856Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 134211856Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 13431999SN/A if (clobber) { 134411856Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 13451999SN/A // If we might be overwriting old mappings, we need to 13462764Sstever@eecs.umich.edu // invalidate potentially stale mappings out of the TLBs. 13472064SN/A tc->getDTBPtr()->flushAll(); 134810931Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13492064SN/A } 13502064SN/A } 135110931Sbrandon.potter@amd.com 13522064SN/A // Allocate physical memory and map it in. If the page table is already 13531999SN/A // mapped and clobber is not set, the simulator will issue throw a 13541999SN/A // fatal and bail out of the simulation. 13552218SN/A p->allocateMem(start, length, clobber); 13561999SN/A 135710931Sbrandon.potter@amd.com // Transfer content into target address space. 13581999SN/A SETranslatingPortProxy &tp = tc->getMemProxy(); 13591999SN/A if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 13601999SN/A // In general, we should zero the mapped area for anonymous mappings, 13611999SN/A // with something like: 13621999SN/A // tp.memsetBlob(start, 0, length); 1363378SN/A // However, given that we don't support sparse mappings, and 1364360SN/A // some applications can map a couple of gigabytes of space 13651450SN/A // (intending sparse usage), that can get painfully expensive. 136613995Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 1367360SN/A // there's no danger of remapping used memory, so for now all 1368360SN/A // newly mapped memory should already be zeroed so we can skip it. 136913995Sbrandon.potter@amd.com } else { 1370360SN/A // It is possible to mmap an area larger than a file, however 13716701Sgblack@eecs.umich.edu // accessing unmapped portions the system triggers a "Bus error" 13728852Sandreas.hansson@arm.com // on the host. We must know when to stop copying the file from 13736701Sgblack@eecs.umich.edu // the host into the target address space. 13746701Sgblack@eecs.umich.edu struct stat file_stat; 13756701Sgblack@eecs.umich.edu if (fstat(sim_fd, &file_stat) > 0) 13766701Sgblack@eecs.umich.edu fatal("mmap: cannot stat file"); 1377360SN/A 137813883Sdavid.hashe@amd.com // Copy the portion of the file that is resident. This requires 137913883Sdavid.hashe@amd.com // checking both the mmap size and the filesize that we are 13803669Sbinkertn@umich.edu // trying to mmap into this space; the mmap size also depends 1381360SN/A // on the specified offset into the file. 1382360SN/A uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 1383360SN/A length); 1384360SN/A tp.writeBlob(start, pmap, size); 13851458SN/A 1386360SN/A // Cleanup the mmap region before exiting this function. 13878706Sandreas.hansson@arm.com munmap(pmap, length); 1388360SN/A 13891458SN/A // Maintain the symbol table for dynamic executables. 1390360SN/A // The loader will call mmap to map the images into its address 1391360SN/A // space and we intercept that here. We can verify that we are 13921999SN/A // executing inside the loader by checking the program counter value. 13931999SN/A // XXX: with multiprogrammed workloads or multi-node configurations, 13941999SN/A // this will not work since there is a single global symbol table. 139513995Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 13961999SN/A if (interpreter) { 13971999SN/A Addr text_start = interpreter->textBase(); 139813995Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 13991999SN/A 14006701Sgblack@eecs.umich.edu Addr pc = tc->pcState().pc(); 14018852Sandreas.hansson@arm.com 14026701Sgblack@eecs.umich.edu if (pc >= text_start && pc < text_end) { 14036701Sgblack@eecs.umich.edu std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 14046701Sgblack@eecs.umich.edu auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 14056701Sgblack@eecs.umich.edu ObjectFile *lib = createObjectFile(ffdp->getFileName()); 14061999SN/A 140713883Sdavid.hashe@amd.com if (lib) { 140813883Sdavid.hashe@amd.com lib->loadAllSymbols(debugSymbolTable, 14093669Sbinkertn@umich.edu lib->textBase(), start); 14102764Sstever@eecs.umich.edu } 14112064SN/A } 14122064SN/A } 14132064SN/A 14141999SN/A // Note that we do not zero out the remainder of the mapping. This 14151999SN/A // is done by a real system, but it probably will not affect 14162064SN/A // execution (hopefully). 14171999SN/A } 14181999SN/A 14191999SN/A return start; 14201999SN/A} 14218706Sandreas.hansson@arm.com 14221999SN/Atemplate <class OS> 14231999SN/ASyscallReturn 14241999SN/Apwrite64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 14251999SN/A{ 1426378SN/A int index = 0; 1427360SN/A int tgt_fd = p->getSyscallArg(tc, index); 14281450SN/A Addr bufPtr = p->getSyscallArg(tc, index); 142913995Sbrandon.potter@amd.com int nbytes = p->getSyscallArg(tc, index); 1430360SN/A int offset = p->getSyscallArg(tc, index); 14316701Sgblack@eecs.umich.edu 143213995Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 143311856Sbrandon.potter@amd.com if (!ffdp) 143411856Sbrandon.potter@amd.com return -EBADF; 1435360SN/A int sim_fd = ffdp->getSimFD(); 143611380Salexandru.dutu@amd.com 1437360SN/A BufferArg bufArg(bufPtr, nbytes); 143811856Sbrandon.potter@amd.com bufArg.copyIn(tc->getMemProxy()); 143911856Sbrandon.potter@amd.com 14401458SN/A int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 144111856Sbrandon.potter@amd.com 1442360SN/A return (bytes_written == -1) ? -errno : bytes_written; 1443360SN/A} 144410931Sbrandon.potter@amd.com 1445360SN/A/// Target mmap() handler. 1446360SN/Atemplate <class OS> 14471458SN/ASyscallReturn 1448360SN/AmmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 144910931Sbrandon.potter@amd.com{ 14502021SN/A return mmapImpl<OS>(desc, num, p, tc, false); 14511458SN/A} 1452360SN/A 1453360SN/A/// Target mmap2() handler. 14541706SN/Atemplate <class OS> 14551706SN/ASyscallReturn 14561706SN/Ammap2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 145713995Sbrandon.potter@amd.com{ 14581706SN/A return mmapImpl<OS>(desc, num, p, tc, true); 145913936SAndrea.Mondelli@ucf.edu} 14601706SN/A 146113995Sbrandon.potter@amd.com/// Target getrlimit() handler. 14621706SN/Atemplate <class OS> 14636701Sgblack@eecs.umich.eduSyscallReturn 14648852Sandreas.hansson@arm.comgetrlimitFunc(SyscallDesc *desc, int callnum, Process *process, 14656701Sgblack@eecs.umich.edu ThreadContext *tc) 14666701Sgblack@eecs.umich.edu{ 14676701Sgblack@eecs.umich.edu int index = 0; 14686701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 14691706SN/A TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 147013883Sdavid.hashe@amd.com 147113883Sdavid.hashe@amd.com switch (resource) { 14723669Sbinkertn@umich.edu case OS::TGT_RLIMIT_STACK: 14731706SN/A // max stack size in bytes: make up a number (8MB for now) 14741706SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14751706SN/A rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14761706SN/A rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14772218SN/A break; 14781706SN/A 147911759Sbrandon.potter@amd.com case OS::TGT_RLIMIT_DATA: 148013933Sbrandon.potter@amd.com // max data segment size in bytes: make up a number 148113933Sbrandon.potter@amd.com rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 148213933Sbrandon.potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 148313933Sbrandon.potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 148411799Sbrandon.potter@amd.com break; 14851706SN/A 14861706SN/A default: 148711886Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 148811886Sbrandon.potter@amd.com return -EINVAL; 148913995Sbrandon.potter@amd.com break; 149011886Sbrandon.potter@amd.com } 149111886Sbrandon.potter@amd.com 149212426Sqtt2@cornell.edu rlp.copyOut(tc->getMemProxy()); 149313995Sbrandon.potter@amd.com return 0; 149413557Sgabeblack@google.com} 149513557Sgabeblack@google.com 149611886Sbrandon.potter@amd.com/// Target clock_gettime() function. 149712426Sqtt2@cornell.edutemplate <class OS> 149813534Sandreas.sandberg@arm.comSyscallReturn 149912426Sqtt2@cornell.educlock_gettimeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 150013534Sandreas.sandberg@arm.com{ 150112426Sqtt2@cornell.edu int index = 1; 150212426Sqtt2@cornell.edu //int clk_id = p->getSyscallArg(tc, index); 150312426Sqtt2@cornell.edu TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 150413536Sandreas.sandberg@arm.com 150512426Sqtt2@cornell.edu getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 150612426Sqtt2@cornell.edu tp->tv_sec += seconds_since_epoch; 150711886Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 150813536Sandreas.sandberg@arm.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 150912426Sqtt2@cornell.edu 151011886Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 151111886Sbrandon.potter@amd.com 151211886Sbrandon.potter@amd.com return 0; 151311886Sbrandon.potter@amd.com} 151411886Sbrandon.potter@amd.com 151511886Sbrandon.potter@amd.com/// Target clock_getres() function. 151611886Sbrandon.potter@amd.comtemplate <class OS> 151711886Sbrandon.potter@amd.comSyscallReturn 151811886Sbrandon.potter@amd.comclock_getresFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 151911886Sbrandon.potter@amd.com{ 152013649Sqtt2@cornell.edu int index = 1; 152113649Sqtt2@cornell.edu TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 152213649Sqtt2@cornell.edu 152313649Sqtt2@cornell.edu // Set resolution at ns, which is what clock_gettime() returns 152413649Sqtt2@cornell.edu tp->tv_sec = 0; 152511886Sbrandon.potter@amd.com tp->tv_nsec = 1; 152611886Sbrandon.potter@amd.com 152711886Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 152811886Sbrandon.potter@amd.com 152911886Sbrandon.potter@amd.com return 0; 153011886Sbrandon.potter@amd.com} 153111886Sbrandon.potter@amd.com 153211886Sbrandon.potter@amd.com/// Target gettimeofday() handler. 153311886Sbrandon.potter@amd.comtemplate <class OS> 153411886Sbrandon.potter@amd.comSyscallReturn 153511886Sbrandon.potter@amd.comgettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process, 153613883Sdavid.hashe@amd.com ThreadContext *tc) 153711886Sbrandon.potter@amd.com{ 153811886Sbrandon.potter@amd.com int index = 0; 153911886Sbrandon.potter@amd.com TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 154011886Sbrandon.potter@amd.com 154111886Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 154211886Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 154311886Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 154411886Sbrandon.potter@amd.com tp->tv_usec = TheISA::htog(tp->tv_usec); 154511886Sbrandon.potter@amd.com 154611886Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 154711886Sbrandon.potter@amd.com 154811886Sbrandon.potter@amd.com return 0; 154911886Sbrandon.potter@amd.com} 155011886Sbrandon.potter@amd.com 155111886Sbrandon.potter@amd.com 155211886Sbrandon.potter@amd.com/// Target utimes() handler. 155311886Sbrandon.potter@amd.comtemplate <class OS> 155411886Sbrandon.potter@amd.comSyscallReturn 155511886Sbrandon.potter@amd.comutimesFunc(SyscallDesc *desc, int callnum, Process *process, 155613867Salexandru.dutu@amd.com ThreadContext *tc) 155713867Salexandru.dutu@amd.com{ 155811886Sbrandon.potter@amd.com std::string path; 155911886Sbrandon.potter@amd.com 156011886Sbrandon.potter@amd.com int index = 0; 156111886Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 156211886Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 156311886Sbrandon.potter@amd.com return -EFAULT; 156411886Sbrandon.potter@amd.com } 156511886Sbrandon.potter@amd.com 156611886Sbrandon.potter@amd.com TypedBufferArg<typename OS::timeval [2]> 156711886Sbrandon.potter@amd.com tp(process->getSyscallArg(tc, index)); 156811886Sbrandon.potter@amd.com tp.copyIn(tc->getMemProxy()); 156911886Sbrandon.potter@amd.com 157011886Sbrandon.potter@amd.com struct timeval hostTimeval[2]; 157111886Sbrandon.potter@amd.com for (int i = 0; i < 2; ++i) 157211886Sbrandon.potter@amd.com { 157313867Salexandru.dutu@amd.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 157413867Salexandru.dutu@amd.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 157513867Salexandru.dutu@amd.com } 157613867Salexandru.dutu@amd.com 157711886Sbrandon.potter@amd.com // Adjust path for current working directory 157811886Sbrandon.potter@amd.com path = process->fullPath(path); 157911886Sbrandon.potter@amd.com 158011911SBrandon.Potter@amd.com int result = utimes(path.c_str(), hostTimeval); 158111911SBrandon.Potter@amd.com 158211911SBrandon.Potter@amd.com if (result < 0) 158311911SBrandon.Potter@amd.com return -errno; 158411911SBrandon.Potter@amd.com 158511911SBrandon.Potter@amd.com return 0; 158611911SBrandon.Potter@amd.com} 158711886Sbrandon.potter@amd.com/// Target getrusage() function. 158811886Sbrandon.potter@amd.comtemplate <class OS> 158911886Sbrandon.potter@amd.comSyscallReturn 159011886Sbrandon.potter@amd.comgetrusageFunc(SyscallDesc *desc, int callnum, Process *process, 159111886Sbrandon.potter@amd.com ThreadContext *tc) 159211886Sbrandon.potter@amd.com{ 159311886Sbrandon.potter@amd.com int index = 0; 159411886Sbrandon.potter@amd.com int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 159511886Sbrandon.potter@amd.com TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 159611886Sbrandon.potter@amd.com 159711886Sbrandon.potter@amd.com rup->ru_utime.tv_sec = 0; 159811886Sbrandon.potter@amd.com rup->ru_utime.tv_usec = 0; 159913536Sandreas.sandberg@arm.com rup->ru_stime.tv_sec = 0; 160011886Sbrandon.potter@amd.com rup->ru_stime.tv_usec = 0; 160111886Sbrandon.potter@amd.com rup->ru_maxrss = 0; 160211886Sbrandon.potter@amd.com rup->ru_ixrss = 0; 160311886Sbrandon.potter@amd.com rup->ru_idrss = 0; 160411886Sbrandon.potter@amd.com rup->ru_isrss = 0; 160511886Sbrandon.potter@amd.com rup->ru_minflt = 0; 160611886Sbrandon.potter@amd.com rup->ru_majflt = 0; 160711886Sbrandon.potter@amd.com rup->ru_nswap = 0; 160811886Sbrandon.potter@amd.com rup->ru_inblock = 0; 160911886Sbrandon.potter@amd.com rup->ru_oublock = 0; 161013867Salexandru.dutu@amd.com rup->ru_msgsnd = 0; 161113867Salexandru.dutu@amd.com rup->ru_msgrcv = 0; 161213867Salexandru.dutu@amd.com rup->ru_nsignals = 0; 161313867Salexandru.dutu@amd.com rup->ru_nvcsw = 0; 161413867Salexandru.dutu@amd.com rup->ru_nivcsw = 0; 161513867Salexandru.dutu@amd.com 161613867Salexandru.dutu@amd.com switch (who) { 161713867Salexandru.dutu@amd.com case OS::TGT_RUSAGE_SELF: 161813867Salexandru.dutu@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 161913867Salexandru.dutu@amd.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 162013867Salexandru.dutu@amd.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 162111886Sbrandon.potter@amd.com break; 162211886Sbrandon.potter@amd.com 162311886Sbrandon.potter@amd.com case OS::TGT_RUSAGE_CHILDREN: 162411886Sbrandon.potter@amd.com // do nothing. We have no child processes, so they take no time. 16251706SN/A break; 16261706SN/A 16271706SN/A default: 16281706SN/A // don't really handle THREAD or CHILDREN, but just warn and 162913995Sbrandon.potter@amd.com // plow ahead 16301706SN/A warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 16316701Sgblack@eecs.umich.edu who); 163213995Sbrandon.potter@amd.com } 163311856Sbrandon.potter@amd.com 163411856Sbrandon.potter@amd.com rup.copyOut(tc->getMemProxy()); 16351706SN/A 163611856Sbrandon.potter@amd.com return 0; 163711856Sbrandon.potter@amd.com} 16381706SN/A 163911856Sbrandon.potter@amd.com/// Target times() function. 16401706SN/Atemplate <class OS> 16411706SN/ASyscallReturn 164210931Sbrandon.potter@amd.comtimesFunc(SyscallDesc *desc, int callnum, Process *process, 16431706SN/A ThreadContext *tc) 16441706SN/A{ 16452218SN/A int index = 0; 16461706SN/A TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 164711759Sbrandon.potter@amd.com 16481706SN/A // Fill in the time structure (in clocks) 16491706SN/A int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16501706SN/A bufp->tms_utime = clocks; 16511706SN/A bufp->tms_stime = 0; 165213572Sbrandon.potter@amd.com bufp->tms_cutime = 0; 165313572Sbrandon.potter@amd.com bufp->tms_cstime = 0; 165413572Sbrandon.potter@amd.com 165513995Sbrandon.potter@amd.com // Convert to host endianness 165613572Sbrandon.potter@amd.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 165713572Sbrandon.potter@amd.com 165813995Sbrandon.potter@amd.com // Write back 165913572Sbrandon.potter@amd.com bufp.copyOut(tc->getMemProxy()); 166013572Sbrandon.potter@amd.com 166113572Sbrandon.potter@amd.com // Return clock ticks since system boot 166213572Sbrandon.potter@amd.com return clocks; 166313572Sbrandon.potter@amd.com} 166413572Sbrandon.potter@amd.com 166513572Sbrandon.potter@amd.com/// Target time() function. 166613572Sbrandon.potter@amd.comtemplate <class OS> 166713572Sbrandon.potter@amd.comSyscallReturn 166813572Sbrandon.potter@amd.comtimeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 166913572Sbrandon.potter@amd.com{ 167013572Sbrandon.potter@amd.com typename OS::time_t sec, usec; 167113572Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 167213572Sbrandon.potter@amd.com sec += seconds_since_epoch; 167313572Sbrandon.potter@amd.com 167413572Sbrandon.potter@amd.com int index = 0; 167513572Sbrandon.potter@amd.com Addr taddr = (Addr)process->getSyscallArg(tc, index); 167613572Sbrandon.potter@amd.com if (taddr != 0) { 167713572Sbrandon.potter@amd.com typename OS::time_t t = sec; 167813572Sbrandon.potter@amd.com t = TheISA::htog(t); 167913572Sbrandon.potter@amd.com SETranslatingPortProxy &p = tc->getMemProxy(); 168013572Sbrandon.potter@amd.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 168113572Sbrandon.potter@amd.com } 168213572Sbrandon.potter@amd.com return sec; 168313572Sbrandon.potter@amd.com} 168413572Sbrandon.potter@amd.com 168513572Sbrandon.potter@amd.com 168613572Sbrandon.potter@amd.com#endif // __SIM_SYSCALL_EMUL_HH__ 168713572Sbrandon.potter@amd.com