syscall_emul.hh revision 11908
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__) || \ 5612018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__NetBSD__)) 5712018Sandreas.sandberg@arm.com 5812018Sandreas.sandberg@arm.com/// 5912018Sandreas.sandberg@arm.com/// @file syscall_emul.hh 6012018Sandreas.sandberg@arm.com/// 6112018Sandreas.sandberg@arm.com/// This file defines objects used to emulate syscalls from the target 6211799Sbrandon.potter@amd.com/// application on the host machine. 6312018Sandreas.sandberg@arm.com 6412018Sandreas.sandberg@arm.com#ifdef __CYGWIN32__ 6512018Sandreas.sandberg@arm.com#include <sys/fcntl.h> 6612018Sandreas.sandberg@arm.com 6712018Sandreas.sandberg@arm.com#endif 6812018Sandreas.sandberg@arm.com#include <fcntl.h> 6911799Sbrandon.potter@amd.com#include <sys/mman.h> 70360SN/A#include <sys/stat.h> 71360SN/A#if (NO_STATFS == 0) 72360SN/A#include <sys/statfs.h> 73360SN/A#else 74360SN/A#include <sys/mount.h> 75360SN/A#endif 761809SN/A#include <sys/time.h> 7711800Sbrandon.potter@amd.com#include <sys/uio.h> 7811392Sbrandon.potter@amd.com#include <unistd.h> 791809SN/A 8011392Sbrandon.potter@amd.com#include <cerrno> 8111383Sbrandon.potter@amd.com#include <memory> 823113Sgblack@eecs.umich.edu#include <string> 8311799Sbrandon.potter@amd.com 8411759Sbrandon.potter@amd.com#include "arch/utility.hh" 8511812Sbaz21@cam.ac.uk#include "base/intmath.hh" 8611812Sbaz21@cam.ac.uk#include "base/loader/object_file.hh" 8711799Sbrandon.potter@amd.com#include "base/misc.hh" 888229Snate@binkert.org#include "base/trace.hh" 898229Snate@binkert.org#include "base/types.hh" 9011594Santhony.gutierrez@amd.com#include "config/the_isa.hh" 917075Snate@binkert.org#include "cpu/base.hh" 928229Snate@binkert.org#include "cpu/thread_context.hh" 9311856Sbrandon.potter@amd.com#include "mem/page_table.hh" 947075Snate@binkert.org#include "params/Process.hh" 95360SN/A#include "sim/emul_driver.hh" 9611886Sbrandon.potter@amd.com#include "sim/process.hh" 9711800Sbrandon.potter@amd.com#include "sim/syscall_debug_macros.hh" 9811392Sbrandon.potter@amd.com#include "sim/syscall_desc.hh" 992462SN/A#include "sim/syscall_emul_buf.hh" 1001354SN/A#include "sim/syscall_return.hh" 1016216Snate@binkert.org 1026658Snate@binkert.org////////////////////////////////////////////////////////////////////// 1032474SN/A// 1042680Sktlim@umich.edu// The following emulation functions are generic enough that they 1058229Snate@binkert.org// don't need to be recompiled for different emulated OS's. They are 10611886Sbrandon.potter@amd.com// defined in sim/syscall_emul.cc. 10710496Ssteve.reinhardt@amd.com// 10811911SBrandon.Potter@amd.com////////////////////////////////////////////////////////////////////// 1098229Snate@binkert.org 11011794Sbrandon.potter@amd.com 11111886Sbrandon.potter@amd.com/// Handler for unimplemented syscalls that we haven't thought about. 11210497Ssteve.reinhardt@amd.comSyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 11311794Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 114360SN/A 115360SN/A/// Handler for unimplemented syscalls that we never intend to 116360SN/A/// implement (signal handling, etc.) and should not affect the correct 117360SN/A/// behavior of the program. Print a warning only if the appropriate 118360SN/A/// trace flag is enabled. Return success to the target program. 119360SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 120360SN/A Process *p, ThreadContext *tc); 121360SN/A 122360SN/A// Target fallocateFunc() handler. 123360SN/ASyscallReturn fallocateFunc(SyscallDesc *desc, int num, 124378SN/A Process *p, ThreadContext *tc); 1251706SN/A 12611851Sbrandon.potter@amd.com/// Target exit() handler: terminate current context. 127378SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 128378SN/A Process *p, ThreadContext *tc); 129378SN/A 130378SN/A/// Target exit_group() handler: terminate simulation. (exit all threads) 131378SN/ASyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1321706SN/A Process *p, ThreadContext *tc); 13311851Sbrandon.potter@amd.com 134360SN/A/// Target set_tid_address() handler. 13511760Sbrandon.potter@amd.comSyscallReturn setTidAddressFunc(SyscallDesc *desc, int num, 13611760Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 13711851Sbrandon.potter@amd.com 13811760Sbrandon.potter@amd.com/// Target getpagesize() handler. 1396109Ssanchezd@stanford.eduSyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1401706SN/A Process *p, ThreadContext *tc); 14111851Sbrandon.potter@amd.com 142378SN/A/// Target brk() handler: set brk address. 1436109Ssanchezd@stanford.eduSyscallReturn brkFunc(SyscallDesc *desc, int num, 1446109Ssanchezd@stanford.edu Process *p, ThreadContext *tc); 14511851Sbrandon.potter@amd.com 1466109Ssanchezd@stanford.edu/// Target close() handler. 14711886Sbrandon.potter@amd.comSyscallReturn closeFunc(SyscallDesc *desc, int num, 14811886Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 14911886Sbrandon.potter@amd.com 15011886Sbrandon.potter@amd.com// Target read() handler. 151378SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1521706SN/A Process *p, ThreadContext *tc); 15311851Sbrandon.potter@amd.com 154378SN/A/// Target write() handler. 1555748SSteve.Reinhardt@amd.comSyscallReturn writeFunc(SyscallDesc *desc, int num, 1565748SSteve.Reinhardt@amd.com Process *p, ThreadContext *tc); 15711851Sbrandon.potter@amd.com 158378SN/A/// Target lseek() handler. 159378SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1601706SN/A Process *p, ThreadContext *tc); 16111851Sbrandon.potter@amd.com 162378SN/A/// Target _llseek() handler. 16311886Sbrandon.potter@amd.comSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1641706SN/A Process *p, ThreadContext *tc); 16511851Sbrandon.potter@amd.com 166378SN/A/// Target munmap() handler. 167378SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1681706SN/A Process *p, ThreadContext *tc); 16911851Sbrandon.potter@amd.com 170378SN/A/// Target gethostname() handler. 171378SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 1721706SN/A Process *p, ThreadContext *tc); 17311851Sbrandon.potter@amd.com 174378SN/A/// Target getcwd() handler. 1754118Sgblack@eecs.umich.eduSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 1764118Sgblack@eecs.umich.edu Process *p, ThreadContext *tc); 17711851Sbrandon.potter@amd.com 1784118Sgblack@eecs.umich.edu/// Target readlink() handler. 179378SN/ASyscallReturn readlinkFunc(SyscallDesc *desc, int num, 1801706SN/A Process *p, ThreadContext *tc, 18111851Sbrandon.potter@amd.com int index = 0); 182378SN/ASyscallReturn readlinkFunc(SyscallDesc *desc, int num, 183378SN/A Process *p, ThreadContext *tc); 1841706SN/A 18511851Sbrandon.potter@amd.com/// Target unlink() handler. 186360SN/ASyscallReturn unlinkHelper(SyscallDesc *desc, int num, 1875513SMichael.Adler@intel.com Process *p, ThreadContext *tc, 1885513SMichael.Adler@intel.com int index); 18911851Sbrandon.potter@amd.comSyscallReturn unlinkFunc(SyscallDesc *desc, int num, 1905513SMichael.Adler@intel.com Process *p, ThreadContext *tc); 19110203SAli.Saidi@ARM.com 19210203SAli.Saidi@ARM.com/// Target mkdir() handler. 19311851Sbrandon.potter@amd.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 19410203SAli.Saidi@ARM.com Process *p, ThreadContext *tc); 1955513SMichael.Adler@intel.com 19611851Sbrandon.potter@amd.com/// Target rename() handler. 1975513SMichael.Adler@intel.comSyscallReturn renameFunc(SyscallDesc *desc, int num, 198511SN/A Process *p, ThreadContext *tc); 19910633Smichaelupton@gmail.com 20011851Sbrandon.potter@amd.com 20110633Smichaelupton@gmail.com/// Target truncate() handler. 2021706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 20311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 204511SN/A 2055513SMichael.Adler@intel.com 2065513SMichael.Adler@intel.com/// Target ftruncate() handler. 20711851Sbrandon.potter@amd.comSyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2085513SMichael.Adler@intel.com Process *p, ThreadContext *tc); 209511SN/A 2101706SN/A 21111851Sbrandon.potter@amd.com/// Target truncate64() handler. 2121706SN/ASyscallReturn truncate64Func(SyscallDesc *desc, int num, 2131706SN/A Process *p, ThreadContext *tc); 2141706SN/A 2151706SN/A/// Target ftruncate64() handler. 21611851Sbrandon.potter@amd.comSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2171706SN/A Process *p, ThreadContext *tc); 2181706SN/A 2191706SN/A 2201706SN/A/// Target umask() handler. 22111851Sbrandon.potter@amd.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2221706SN/A Process *p, ThreadContext *tc); 223511SN/A 2246703Svince@csl.cornell.edu/// Target gettid() handler. 2256703Svince@csl.cornell.eduSyscallReturn gettidFunc(SyscallDesc *desc, int num, 22611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2276703Svince@csl.cornell.edu 2286685Stjones1@inf.ed.ac.uk/// Target chown() handler. 2296685Stjones1@inf.ed.ac.ukSyscallReturn chownFunc(SyscallDesc *desc, int num, 23011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2316685Stjones1@inf.ed.ac.uk 2326685Stjones1@inf.ed.ac.uk/// Target setpgid() handler. 2335513SMichael.Adler@intel.comSyscallReturn setpgidFunc(SyscallDesc *desc, int num, 2345513SMichael.Adler@intel.com Process *p, ThreadContext *tc); 23511851Sbrandon.potter@amd.com 2365513SMichael.Adler@intel.com/// Target fchown() handler. 23711885Sbrandon.potter@amd.comSyscallReturn fchownFunc(SyscallDesc *desc, int num, 23811885Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 23911885Sbrandon.potter@amd.com 2405513SMichael.Adler@intel.com/// Target dup() handler. 2411999SN/ASyscallReturn dupFunc(SyscallDesc *desc, int num, 2421999SN/A Process *process, ThreadContext *tc); 24311851Sbrandon.potter@amd.com 2441999SN/A/// Target dup2() handler. 24511885Sbrandon.potter@amd.comSyscallReturn dup2Func(SyscallDesc *desc, int num, 24611885Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 24711885Sbrandon.potter@amd.com 2481999SN/A/// Target fcntl() handler. 2491999SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2501999SN/A Process *process, ThreadContext *tc); 25111851Sbrandon.potter@amd.com 2521999SN/A/// Target fcntl64() handler. 2533079Sstever@eecs.umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2543079Sstever@eecs.umich.edu Process *process, ThreadContext *tc); 25511851Sbrandon.potter@amd.com 2563079Sstever@eecs.umich.edu/// Target setuid() handler. 25711908SBrandon.Potter@amd.comSyscallReturn setuidFunc(SyscallDesc *desc, int num, 25811908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 25911908SBrandon.Potter@amd.com 26011908SBrandon.Potter@amd.com/// Target pipe() handler. 26111875Sbrandon.potter@amd.comSyscallReturn pipeFunc(SyscallDesc *desc, int num, 2622093SN/A Process *p, ThreadContext *tc); 26311851Sbrandon.potter@amd.com 2642093SN/A/// Internal pipe() handler. 2652687Sksewell@umich.eduSyscallReturn pipeImpl(SyscallDesc *desc, int num, Process *p, 2662687Sksewell@umich.edu ThreadContext *tc, bool pseudoPipe); 26711851Sbrandon.potter@amd.com 2682687Sksewell@umich.edu/// Target getpid() handler. 2692238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2702238SN/A Process *p, ThreadContext *tc); 27111851Sbrandon.potter@amd.com 2722238SN/A/// Target getuid() handler. 27311908SBrandon.Potter@amd.comSyscallReturn getuidFunc(SyscallDesc *desc, int num, 27411908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 27511908SBrandon.Potter@amd.com 27611908SBrandon.Potter@amd.com/// Target getgid() handler. 27711908SBrandon.Potter@amd.comSyscallReturn getgidFunc(SyscallDesc *desc, int num, 27811908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 27911908SBrandon.Potter@amd.com 28011908SBrandon.Potter@amd.com/// Target getppid() handler. 2812238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2822238SN/A Process *p, ThreadContext *tc); 28311851Sbrandon.potter@amd.com 2842238SN/A/// Target geteuid() handler. 2852238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2862238SN/A Process *p, ThreadContext *tc); 28711851Sbrandon.potter@amd.com 2882238SN/A/// Target getegid() handler. 2892238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 2902238SN/A Process *p, ThreadContext *tc); 29111851Sbrandon.potter@amd.com 2922238SN/A/// Target access() handler 2932238SN/ASyscallReturn accessFunc(SyscallDesc *desc, int num, 2942238SN/A Process *p, ThreadContext *tc); 29511851Sbrandon.potter@amd.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 2962238SN/A Process *p, ThreadContext *tc, 2972238SN/A int index); 2982238SN/A 29911851Sbrandon.potter@amd.com/// Futex system call 3002238SN/A/// Implemented by Daniel Sanchez 3012238SN/A/// Used by printf's in multi-threaded apps 3022238SN/Atemplate <class OS> 30311851Sbrandon.potter@amd.comSyscallReturn 3042238SN/AfutexFunc(SyscallDesc *desc, int callnum, Process *process, 3059455Smitch.hayenga+gem5@gmail.com ThreadContext *tc) 3069455Smitch.hayenga+gem5@gmail.com{ 30711851Sbrandon.potter@amd.com int index_uaddr = 0; 30810203SAli.Saidi@ARM.com int index_op = 1; 30911851Sbrandon.potter@amd.com int index_val = 2; 31011851Sbrandon.potter@amd.com int index_timeout = 3; 3119455Smitch.hayenga+gem5@gmail.com 3129112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 31311906SBrandon.Potter@amd.com int op = process->getSyscallArg(tc, index_op); 31411906SBrandon.Potter@amd.com int val = process->getSyscallArg(tc, index_val); 3159112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3169112Smarc.orr@gmail.com 31711851Sbrandon.potter@amd.com std::map<uint64_t, std::list<ThreadContext *> * > 3189112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3199112Smarc.orr@gmail.com 32011911SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "futex: Address=%llx, op=%d, val=%d\n", 3219112Smarc.orr@gmail.com uaddr, op, val); 32211911SBrandon.Potter@amd.com 32311911SBrandon.Potter@amd.com op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 32411911SBrandon.Potter@amd.com 32511911SBrandon.Potter@amd.com if (op == OS::TGT_FUTEX_WAIT) { 3269112Smarc.orr@gmail.com if (timeout != 0) { 32711911SBrandon.Potter@amd.com warn("futex: FUTEX_WAIT with non-null timeout unimplemented;" 32811911SBrandon.Potter@amd.com "we'll wait indefinitely"); 32911911SBrandon.Potter@amd.com } 33011911SBrandon.Potter@amd.com 3319238Slluc.alvarez@bsc.es uint8_t *buf = new uint8_t[sizeof(int)]; 3329112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 33311911SBrandon.Potter@amd.com int mem_val = *((int *)buf); 3349112Smarc.orr@gmail.com delete[] buf; 33511911SBrandon.Potter@amd.com 33611911SBrandon.Potter@amd.com if (val != mem_val) { 33711911SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "futex: FUTEX_WAKE, read: %d, " 33811911SBrandon.Potter@amd.com "expected: %d\n", mem_val, val); 33911911SBrandon.Potter@amd.com return -OS::TGT_EWOULDBLOCK; 3409112Smarc.orr@gmail.com } 34111911SBrandon.Potter@amd.com 34211911SBrandon.Potter@amd.com // Queue the thread context 34311911SBrandon.Potter@amd.com std::list<ThreadContext *> * tcWaitList; 34411911SBrandon.Potter@amd.com if (futex_map.count(uaddr)) { 34511911SBrandon.Potter@amd.com tcWaitList = futex_map.find(uaddr)->second; 34611911SBrandon.Potter@amd.com } else { 3479112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3489112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 34911911SBrandon.Potter@amd.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 35011911SBrandon.Potter@amd.com } 3519112Smarc.orr@gmail.com tcWaitList->push_back(tc); 35211911SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "futex: FUTEX_WAIT, suspending calling thread " 35311911SBrandon.Potter@amd.com "context on address 0x%lx\n", uaddr); 3549112Smarc.orr@gmail.com tc->suspend(); 3559112Smarc.orr@gmail.com return 0; 35611911SBrandon.Potter@amd.com } else if (op == OS::TGT_FUTEX_WAKE){ 35711911SBrandon.Potter@amd.com int wokenUp = 0; 3589112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3599112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3602238SN/A tcWaitList = futex_map.find(uaddr)->second; 3612238SN/A while (tcWaitList->size() > 0 && wokenUp < val) { 3622238SN/A tcWaitList->front()->activate(); 3632238SN/A tcWaitList->pop_front(); 36411851Sbrandon.potter@amd.com wokenUp++; 3652238SN/A } 3662238SN/A if (tcWaitList->empty()) { 3672238SN/A futex_map.erase(uaddr); 36811851Sbrandon.potter@amd.com delete tcWaitList; 3692238SN/A } 3702238SN/A } 3712238SN/A DPRINTF(SyscallVerbose, "futex: FUTEX_WAKE, activated %d waiting " 37211851Sbrandon.potter@amd.com "thread context on address 0x%lx\n", 3732238SN/A wokenUp, uaddr); 3742238SN/A return wokenUp; 3752238SN/A } else { 37611851Sbrandon.potter@amd.com warn("futex: op %d is not implemented, just returning...", op); 3772238SN/A return 0; 3782238SN/A } 3791354SN/A 3801354SN/A} 38110796Sbrandon.potter@amd.com 38210796Sbrandon.potter@amd.com 3831354SN/A/// Pseudo Funcs - These functions use a different return convension, 3841354SN/A/// returning a second value in a register other than the normal return register 3851354SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3861354SN/A Process *process, ThreadContext *tc); 3871354SN/A 3881354SN/A/// Target getpidPseudo() handler. 3891354SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3901354SN/A Process *p, ThreadContext *tc); 3911354SN/A 3921354SN/A/// Target getuidPseudo() handler. 39310796Sbrandon.potter@amd.comSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3941354SN/A Process *p, ThreadContext *tc); 39510796Sbrandon.potter@amd.com 3961354SN/A/// Target getgidPseudo() handler. 3971354SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3981354SN/A Process *p, ThreadContext *tc); 3991354SN/A 40010796Sbrandon.potter@amd.com 40110796Sbrandon.potter@amd.com/// A readable name for 1,000,000, for converting microseconds to seconds. 40210796Sbrandon.potter@amd.comconst int one_million = 1000000; 40310796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 40410796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 40510796Sbrandon.potter@amd.com 40610796Sbrandon.potter@amd.com/// Approximate seconds since the epoch (1/1/1970). About a billion, 40710796Sbrandon.potter@amd.com/// by my reckoning. We want to keep this a constant (not use the 40810796Sbrandon.potter@amd.com/// real-world time) to keep simulations repeatable. 40910796Sbrandon.potter@amd.comconst unsigned seconds_since_epoch = 1000000000; 41010796Sbrandon.potter@amd.com 411360SN/A/// Helper function to convert current elapsed time to seconds and 412360SN/A/// microseconds. 413360SN/Atemplate <class T1, class T2> 414360SN/Avoid 415360SN/AgetElapsedTimeMicro(T1 &sec, T2 &usec) 416360SN/A{ 417360SN/A uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 41811759Sbrandon.potter@amd.com sec = elapsed_usecs / one_million; 4193113Sgblack@eecs.umich.edu usec = elapsed_usecs % one_million; 4203113Sgblack@eecs.umich.edu} 4213113Sgblack@eecs.umich.edu 4223113Sgblack@eecs.umich.edu/// Helper function to convert current elapsed time to seconds and 4233113Sgblack@eecs.umich.edu/// nanoseconds. 4243113Sgblack@eecs.umich.edutemplate <class T1, class T2> 4253113Sgblack@eecs.umich.eduvoid 4263113Sgblack@eecs.umich.edugetElapsedTimeNano(T1 &sec, T2 &nsec) 4273113Sgblack@eecs.umich.edu{ 4283113Sgblack@eecs.umich.edu uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 4293113Sgblack@eecs.umich.edu sec = elapsed_nsecs / one_billion; 4303113Sgblack@eecs.umich.edu nsec = elapsed_nsecs % one_billion; 4313113Sgblack@eecs.umich.edu} 4323113Sgblack@eecs.umich.edu 4333113Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////// 4343113Sgblack@eecs.umich.edu// 4354189Sgblack@eecs.umich.edu// The following emulation functions are generic, but need to be 4364189Sgblack@eecs.umich.edu// templated to account for differences in types, constants, etc. 4373113Sgblack@eecs.umich.edu// 4383113Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////// 4393113Sgblack@eecs.umich.edu 4403113Sgblack@eecs.umich.edu typedef struct statfs hst_statfs; 4418737Skoansin.tan@gmail.com#if NO_STAT64 4423113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4438737Skoansin.tan@gmail.com typedef struct stat hst_stat64; 4443277Sgblack@eecs.umich.edu#else 4455515SMichael.Adler@intel.com typedef struct stat hst_stat; 4465515SMichael.Adler@intel.com typedef struct stat64 hst_stat64; 4475515SMichael.Adler@intel.com#endif 4485515SMichael.Adler@intel.com 4495515SMichael.Adler@intel.com//// Helper function to convert a host stat buffer to a target stat 4508737Skoansin.tan@gmail.com//// buffer. Also copies the target buffer out to the simulated 4513277Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4528737Skoansin.tan@gmail.com 4533277Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4548737Skoansin.tan@gmail.comstatic void 4553277Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4568737Skoansin.tan@gmail.com{ 4573113Sgblack@eecs.umich.edu using namespace TheISA; 4583113Sgblack@eecs.umich.edu 4593113Sgblack@eecs.umich.edu if (fakeTTY) 4603113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4618737Skoansin.tan@gmail.com else 4623113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4638737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4643114Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4658737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4663114Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4678737Skoansin.tan@gmail.com if (fakeTTY) { 4683114Sgblack@eecs.umich.edu // Claim to be a character device 4698737Skoansin.tan@gmail.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 47011906SBrandon.Potter@amd.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4714061Sgblack@eecs.umich.edu } 4724061Sgblack@eecs.umich.edu tgt->st_mode = TheISA::htog(tgt->st_mode); 4738737Skoansin.tan@gmail.com tgt->st_nlink = host->st_nlink; 4743113Sgblack@eecs.umich.edu tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4758737Skoansin.tan@gmail.com tgt->st_uid = host->st_uid; 4763113Sgblack@eecs.umich.edu tgt->st_uid = TheISA::htog(tgt->st_uid); 4773113Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4783113Sgblack@eecs.umich.edu tgt->st_gid = TheISA::htog(tgt->st_gid); 4793113Sgblack@eecs.umich.edu if (fakeTTY) 4803113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4813113Sgblack@eecs.umich.edu else 4823113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4833113Sgblack@eecs.umich.edu tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4844189Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4854189Sgblack@eecs.umich.edu tgt->st_size = TheISA::htog(tgt->st_size); 4863113Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4873113Sgblack@eecs.umich.edu tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4883113Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4898737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4903113Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4918737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 4923113Sgblack@eecs.umich.edu // Force the block size to be 8KB. This helps to ensure buffered io works 4938737Skoansin.tan@gmail.com // consistently across different hosts. 4943113Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4953113Sgblack@eecs.umich.edu tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4963113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4973113Sgblack@eecs.umich.edu tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4983113Sgblack@eecs.umich.edu} 4993113Sgblack@eecs.umich.edu 5003113Sgblack@eecs.umich.edu// Same for stat64 50111906SBrandon.Potter@amd.com 5023113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5033113Sgblack@eecs.umich.edustatic void 5048852Sandreas.hansson@arm.comconvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 50511906SBrandon.Potter@amd.com{ 5063113Sgblack@eecs.umich.edu using namespace TheISA; 5073113Sgblack@eecs.umich.edu 5083113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5093113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5103113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5113113Sgblack@eecs.umich.edu tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5123113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5133113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5143113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5158852Sandreas.hansson@arm.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 51611906SBrandon.Potter@amd.com#else 5173113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5183113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5193113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5206686Stjones1@inf.ed.ac.uk#endif 5213113Sgblack@eecs.umich.edu} 5223113Sgblack@eecs.umich.edu 5233113Sgblack@eecs.umich.edu// Here are a couple of convenience functions 52411759Sbrandon.potter@amd.comtemplate<class OS> 52511759Sbrandon.potter@amd.comstatic void 52611759Sbrandon.potter@amd.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 52711759Sbrandon.potter@amd.com hst_stat *host, bool fakeTTY = false) 52811759Sbrandon.potter@amd.com{ 52911759Sbrandon.potter@amd.com typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 53011759Sbrandon.potter@amd.com tgt_stat_buf tgt(addr); 53111812Sbaz21@cam.ac.uk convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 53211812Sbaz21@cam.ac.uk tgt.copyOut(mem); 53311812Sbaz21@cam.ac.uk} 53411759Sbrandon.potter@amd.com 53511812Sbaz21@cam.ac.uktemplate<class OS> 53611759Sbrandon.potter@amd.comstatic void 53711759Sbrandon.potter@amd.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 53811759Sbrandon.potter@amd.com hst_stat64 *host, bool fakeTTY = false) 53911759Sbrandon.potter@amd.com{ 54011759Sbrandon.potter@amd.com typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 54111759Sbrandon.potter@amd.com tgt_stat_buf tgt(addr); 54211759Sbrandon.potter@amd.com convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 54311812Sbaz21@cam.ac.uk tgt.copyOut(mem); 54411812Sbaz21@cam.ac.uk} 54511812Sbaz21@cam.ac.uk 54611812Sbaz21@cam.ac.uktemplate <class OS> 54711812Sbaz21@cam.ac.ukstatic void 54811812Sbaz21@cam.ac.ukcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 54911812Sbaz21@cam.ac.uk hst_statfs *host) 55011759Sbrandon.potter@amd.com{ 55111759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 55211812Sbaz21@cam.ac.uk 55311812Sbaz21@cam.ac.uk tgt->f_type = TheISA::htog(host->f_type); 55411759Sbrandon.potter@amd.com#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 55511812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_iosize); 55611812Sbaz21@cam.ac.uk#else 55711812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_bsize); 55811812Sbaz21@cam.ac.uk#endif 55911812Sbaz21@cam.ac.uk tgt->f_blocks = TheISA::htog(host->f_blocks); 56011812Sbaz21@cam.ac.uk tgt->f_bfree = TheISA::htog(host->f_bfree); 56111812Sbaz21@cam.ac.uk tgt->f_bavail = TheISA::htog(host->f_bavail); 56211759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 56311759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 56411759Sbrandon.potter@amd.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 56511759Sbrandon.potter@amd.com#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 566378SN/A tgt->f_namelen = TheISA::htog(host->f_namemax); 567378SN/A tgt->f_frsize = TheISA::htog(host->f_bsize); 5689141Smarc.orr@gmail.com#elif defined(__APPLE__) 5699141Smarc.orr@gmail.com tgt->f_namelen = 0; 570360SN/A tgt->f_frsize = 0; 5711450SN/A#else 57211856Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 573360SN/A tgt->f_frsize = TheISA::htog(host->f_frsize); 5746701Sgblack@eecs.umich.edu#endif 57511856Sbrandon.potter@amd.com#if defined(__linux__) 57611856Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 577360SN/A#else 57810930Sbrandon.potter@amd.com /* 579360SN/A * The fields are different sizes per OS. Don't bother with 58011856Sbrandon.potter@amd.com * f_spare or f_reserved on non-Linux for now. 58111856Sbrandon.potter@amd.com */ 58210496Ssteve.reinhardt@amd.com memset(&tgt->f_spare, 0, sizeof(tgt->f_spare)); 58311856Sbrandon.potter@amd.com#endif 58411856Sbrandon.potter@amd.com 5851458SN/A tgt.copyOut(mem); 586360SN/A} 58711856Sbrandon.potter@amd.com 58811856Sbrandon.potter@amd.com/// Target ioctl() handler. For the most part, programs call ioctl() 58911856Sbrandon.potter@amd.com/// only to find out if their stdout is a tty, to determine whether to 59011856Sbrandon.potter@amd.com/// do line or block buffering. We always claim that output fds are 59111856Sbrandon.potter@amd.com/// not TTYs to provide repeatable results. 59211856Sbrandon.potter@amd.comtemplate <class OS> 59311856Sbrandon.potter@amd.comSyscallReturn 59411856Sbrandon.potter@amd.comioctlFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 59510496Ssteve.reinhardt@amd.com{ 59611856Sbrandon.potter@amd.com int index = 0; 59711856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 59811856Sbrandon.potter@amd.com unsigned req = p->getSyscallArg(tc, index); 59911856Sbrandon.potter@amd.com 60011856Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 60110930Sbrandon.potter@amd.com 6029141Smarc.orr@gmail.com if (OS::isTtyReq(req)) 603360SN/A return -ENOTTY; 604360SN/A 605360SN/A auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>((*p->fds)[tgt_fd]); 60611907SBrandon.Potter@amd.com if (!dfdp) 60711907SBrandon.Potter@amd.com return -EBADF; 60811907SBrandon.Potter@amd.com 609360SN/A /** 61011907SBrandon.Potter@amd.com * If the driver is valid, issue the ioctl through it. Otherwise, 61111907SBrandon.Potter@amd.com * there's an implicit assumption that the device is a TTY type and we 61211907SBrandon.Potter@amd.com * return that we do not have a valid TTY. 61311907SBrandon.Potter@amd.com */ 61411907SBrandon.Potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 61511907SBrandon.Potter@amd.com if (emul_driver) 61611907SBrandon.Potter@amd.com return emul_driver->ioctl(p, tc, req); 61711907SBrandon.Potter@amd.com 61811907SBrandon.Potter@amd.com /** 61911907SBrandon.Potter@amd.com * For lack of a better return code, return ENOTTY. Ideally, we should 62011907SBrandon.Potter@amd.com * return something better here, but at least we issue the warning. 62111907SBrandon.Potter@amd.com */ 62211907SBrandon.Potter@amd.com warn("Unsupported ioctl call (return ENOTTY): ioctl(%d, 0x%x, ...) @ \n", 62311907SBrandon.Potter@amd.com tgt_fd, req, tc->pcState()); 624360SN/A return -ENOTTY; 62511907SBrandon.Potter@amd.com} 6261458SN/A 627360SN/Atemplate <class OS> 62811907SBrandon.Potter@amd.comSyscallReturn 62911907SBrandon.Potter@amd.comopenImpl(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc, 63011907SBrandon.Potter@amd.com bool isopenat) 63111907SBrandon.Potter@amd.com{ 63211907SBrandon.Potter@amd.com int index = 0; 63311907SBrandon.Potter@amd.com int tgt_dirfd = -1; 63411907SBrandon.Potter@amd.com 63511907SBrandon.Potter@amd.com /** 63611907SBrandon.Potter@amd.com * If using the openat variant, read in the target directory file 63711907SBrandon.Potter@amd.com * descriptor from the simulated process. 638360SN/A */ 63911907SBrandon.Potter@amd.com if (isopenat) 64011907SBrandon.Potter@amd.com tgt_dirfd = p->getSyscallArg(tc, index); 64111907SBrandon.Potter@amd.com 642360SN/A /** 643360SN/A * Retrieve the simulated process' memory proxy and then read in the path 64411907SBrandon.Potter@amd.com * string from that memory space into the host's working memory space. 64511907SBrandon.Potter@amd.com */ 64611907SBrandon.Potter@amd.com std::string path; 64711907SBrandon.Potter@amd.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 648360SN/A return -EFAULT; 64911907SBrandon.Potter@amd.com 650360SN/A#ifdef __CYGWIN32__ 651360SN/A int host_flags = O_BINARY; 65211907SBrandon.Potter@amd.com#else 6533669Sbinkertn@umich.edu int host_flags = 0; 65411907SBrandon.Potter@amd.com#endif 65511907SBrandon.Potter@amd.com /** 65611907SBrandon.Potter@amd.com * Translate target flags into host flags. Flags exist which are not 65711907SBrandon.Potter@amd.com * ported between architectures which can cause check failures. 65811907SBrandon.Potter@amd.com */ 65911907SBrandon.Potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 66011907SBrandon.Potter@amd.com for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 66111907SBrandon.Potter@amd.com if (tgt_flags & OS::openFlagTable[i].tgtFlag) { 66211907SBrandon.Potter@amd.com tgt_flags &= ~OS::openFlagTable[i].tgtFlag; 66311907SBrandon.Potter@amd.com host_flags |= OS::openFlagTable[i].hostFlag; 66411907SBrandon.Potter@amd.com } 66511907SBrandon.Potter@amd.com } 66611907SBrandon.Potter@amd.com if (tgt_flags) { 66711907SBrandon.Potter@amd.com warn("open%s: cannot decode flags 0x%x", 66811907SBrandon.Potter@amd.com isopenat ? "at" : "", tgt_flags); 66911907SBrandon.Potter@amd.com } 67011907SBrandon.Potter@amd.com#ifdef __CYGWIN32__ 67111907SBrandon.Potter@amd.com host_flags |= O_BINARY; 67211907SBrandon.Potter@amd.com#endif 67311907SBrandon.Potter@amd.com 67411907SBrandon.Potter@amd.com int mode = p->getSyscallArg(tc, index); 6751706SN/A 67611907SBrandon.Potter@amd.com /** 67711907SBrandon.Potter@amd.com * If the simulated process called open or openat with AT_FDCWD specified, 67811907SBrandon.Potter@amd.com * take the current working directory value which was passed into the 67911907SBrandon.Potter@amd.com * process class as a Python parameter and append the current path to 68011907SBrandon.Potter@amd.com * create a full path. 68111907SBrandon.Potter@amd.com * Otherwise, openat with a valid target directory file descriptor has 68210496Ssteve.reinhardt@amd.com * been called. If the path option, which was passed in as a parameter, 68310496Ssteve.reinhardt@amd.com * is not absolute, retrieve the directory file descriptor's path and 68411907SBrandon.Potter@amd.com * prepend it to the path passed in as a parameter. 68511907SBrandon.Potter@amd.com * In every case, we should have a full path (which is relevant to the 68611907SBrandon.Potter@amd.com * host) to work with after this block has been passed. 68711907SBrandon.Potter@amd.com */ 68811907SBrandon.Potter@amd.com if (!isopenat || (isopenat && tgt_dirfd == OS::TGT_AT_FDCWD)) { 68911907SBrandon.Potter@amd.com path = p->fullPath(path); 69010496Ssteve.reinhardt@amd.com } else if (!startswith(path, "/")) { 69111907SBrandon.Potter@amd.com std::shared_ptr<FDEntry> fdep = ((*p->fds)[tgt_dirfd]); 69211907SBrandon.Potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 69311907SBrandon.Potter@amd.com if (!ffdp) 69411907SBrandon.Potter@amd.com return -EBADF; 69510496Ssteve.reinhardt@amd.com path.insert(0, ffdp->getFileName()); 69610496Ssteve.reinhardt@amd.com } 69711907SBrandon.Potter@amd.com 69811907SBrandon.Potter@amd.com /** 69911907SBrandon.Potter@amd.com * Since this is an emulated environment, we create pseudo file 70011907SBrandon.Potter@amd.com * descriptors for device requests that have been registered with 70111907SBrandon.Potter@amd.com * the process class through Python; this allows us to create a file 70211907SBrandon.Potter@amd.com * descriptor for subsequent ioctl or mmap calls. 70311907SBrandon.Potter@amd.com */ 70411907SBrandon.Potter@amd.com if (startswith(path, "/dev/")) { 70511907SBrandon.Potter@amd.com std::string filename = path.substr(strlen("/dev/")); 70611907SBrandon.Potter@amd.com EmulatedDriver *drv = p->findDriver(filename); 70711907SBrandon.Potter@amd.com if (drv) { 70811907SBrandon.Potter@amd.com DPRINTF_SYSCALL(Verbose, "open%s: passing call to " 70911907SBrandon.Potter@amd.com "driver open with path[%s]\n", 71011907SBrandon.Potter@amd.com isopenat ? "at" : "", path.c_str()); 71111907SBrandon.Potter@amd.com return drv->open(p, tc, mode, host_flags); 71211907SBrandon.Potter@amd.com } 71311907SBrandon.Potter@amd.com /** 71411907SBrandon.Potter@amd.com * Fall through here for pass through to host devices, such 71511907SBrandon.Potter@amd.com * as /dev/zero 71611907SBrandon.Potter@amd.com */ 71711907SBrandon.Potter@amd.com } 71811907SBrandon.Potter@amd.com 71911907SBrandon.Potter@amd.com /** 72011907SBrandon.Potter@amd.com * Some special paths and files cannot be called on the host and need 72111907SBrandon.Potter@amd.com * to be handled as special cases inside the simulator. 722360SN/A * If the full path that was created above does not match any of the 72311907SBrandon.Potter@amd.com * special cases, pass it through to the open call on the host to let 72411907SBrandon.Potter@amd.com * the host open the file on our behalf. 72511907SBrandon.Potter@amd.com * If the host cannot open the file, return the host's error code back 72611907SBrandon.Potter@amd.com * through the system call to the simulated process. 72711907SBrandon.Potter@amd.com */ 72811907SBrandon.Potter@amd.com int sim_fd = -1; 72911907SBrandon.Potter@amd.com std::vector<std::string> special_paths = 73011907SBrandon.Potter@amd.com { "/proc/", "/system/", "/sys/", "/platform/", "/etc/passwd" }; 73111907SBrandon.Potter@amd.com for (auto entry : special_paths) { 73211907SBrandon.Potter@amd.com if (startswith(path, entry)) 73311907SBrandon.Potter@amd.com sim_fd = OS::openSpecialFile(path, p, tc); 73411907SBrandon.Potter@amd.com } 73511907SBrandon.Potter@amd.com if (sim_fd == -1) { 736360SN/A sim_fd = open(path.c_str(), host_flags, mode); 737360SN/A } 73810027SChris.Adeniyi-Jones@arm.com if (sim_fd == -1) { 73910027SChris.Adeniyi-Jones@arm.com int local = -errno; 74010027SChris.Adeniyi-Jones@arm.com DPRINTF_SYSCALL(Verbose, "open%s: failed -> path:%s\n", 74111851Sbrandon.potter@amd.com isopenat ? "at" : "", path.c_str()); 74210027SChris.Adeniyi-Jones@arm.com return local; 74310027SChris.Adeniyi-Jones@arm.com } 74411907SBrandon.Potter@amd.com 74510027SChris.Adeniyi-Jones@arm.com /** 74610027SChris.Adeniyi-Jones@arm.com * The file was opened successfully and needs to be recorded in the 74710027SChris.Adeniyi-Jones@arm.com * process' file descriptor array so that it can be retrieved later. 74810027SChris.Adeniyi-Jones@arm.com * The target file descriptor that is chosen will be the lowest unused 74910027SChris.Adeniyi-Jones@arm.com * file descriptor. 75011851Sbrandon.potter@amd.com * Return the indirect target file descriptor back to the simulated 75111851Sbrandon.potter@amd.com * process to act as a handle for the opened file. 75210027SChris.Adeniyi-Jones@arm.com */ 75311907SBrandon.Potter@amd.com auto ffdp = std::make_shared<FileFDEntry>(sim_fd, host_flags, path, 0); 75410027SChris.Adeniyi-Jones@arm.com int tgt_fd = p->fds->allocFD(ffdp); 75510027SChris.Adeniyi-Jones@arm.com DPRINTF_SYSCALL(Verbose, "open%s: sim_fd[%d], target_fd[%d] -> path:%s\n", 75610633Smichaelupton@gmail.com isopenat ? "at" : "", sim_fd, tgt_fd, path.c_str()); 75710633Smichaelupton@gmail.com return tgt_fd; 75810633Smichaelupton@gmail.com} 75911851Sbrandon.potter@amd.com 76010633Smichaelupton@gmail.com/// Target open() handler. 76110633Smichaelupton@gmail.comtemplate <class OS> 76210633Smichaelupton@gmail.comSyscallReturn 76310633Smichaelupton@gmail.comopenFunc(SyscallDesc *desc, int callnum, Process *process, 76410633Smichaelupton@gmail.com ThreadContext *tc) 76510633Smichaelupton@gmail.com{ 76610633Smichaelupton@gmail.com return openImpl<OS>(desc, callnum, process, tc, false); 76710633Smichaelupton@gmail.com} 76810633Smichaelupton@gmail.com 76910633Smichaelupton@gmail.com/// Target openat() handler. 77010203SAli.Saidi@ARM.comtemplate <class OS> 77110203SAli.Saidi@ARM.comSyscallReturn 77210203SAli.Saidi@ARM.comopenatFunc(SyscallDesc *desc, int callnum, Process *process, 77311851Sbrandon.potter@amd.com ThreadContext *tc) 77411851Sbrandon.potter@amd.com{ 77510203SAli.Saidi@ARM.com return openImpl<OS>(desc, callnum, process, tc, true); 77610203SAli.Saidi@ARM.com} 77710203SAli.Saidi@ARM.com 77810203SAli.Saidi@ARM.com/// Target unlinkat() handler. 77910203SAli.Saidi@ARM.comtemplate <class OS> 78010203SAli.Saidi@ARM.comSyscallReturn 78110203SAli.Saidi@ARM.comunlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 78210203SAli.Saidi@ARM.com ThreadContext *tc) 78310203SAli.Saidi@ARM.com{ 78410203SAli.Saidi@ARM.com int index = 0; 78510203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 78611851Sbrandon.potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 78711851Sbrandon.potter@amd.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 78810203SAli.Saidi@ARM.com 78910203SAli.Saidi@ARM.com return unlinkHelper(desc, callnum, process, tc, 1); 79010203SAli.Saidi@ARM.com} 79110203SAli.Saidi@ARM.com 79210203SAli.Saidi@ARM.com/// Target facessat() handler 79310203SAli.Saidi@ARM.comtemplate <class OS> 79410203SAli.Saidi@ARM.comSyscallReturn 79510203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, Process *process, 79610850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 79710850SGiacomo.Gabrielli@arm.com{ 79810850SGiacomo.Gabrielli@arm.com int index = 0; 79911851Sbrandon.potter@amd.com int dirfd = process->getSyscallArg(tc, index); 80010850SGiacomo.Gabrielli@arm.com if (dirfd != OS::TGT_AT_FDCWD) 80110850SGiacomo.Gabrielli@arm.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 80210850SGiacomo.Gabrielli@arm.com return accessFunc(desc, callnum, process, tc, 1); 80310850SGiacomo.Gabrielli@arm.com} 80410850SGiacomo.Gabrielli@arm.com 80510850SGiacomo.Gabrielli@arm.com/// Target readlinkat() handler 80610850SGiacomo.Gabrielli@arm.comtemplate <class OS> 80710850SGiacomo.Gabrielli@arm.comSyscallReturn 80810850SGiacomo.Gabrielli@arm.comreadlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 80910850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 81010850SGiacomo.Gabrielli@arm.com{ 81110850SGiacomo.Gabrielli@arm.com int index = 0; 81210850SGiacomo.Gabrielli@arm.com int dirfd = process->getSyscallArg(tc, index); 81310850SGiacomo.Gabrielli@arm.com if (dirfd != OS::TGT_AT_FDCWD) 81410850SGiacomo.Gabrielli@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 81510850SGiacomo.Gabrielli@arm.com return readlinkFunc(desc, callnum, process, tc, 1); 81610850SGiacomo.Gabrielli@arm.com} 81710850SGiacomo.Gabrielli@arm.com 81810850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 81910850SGiacomo.Gabrielli@arm.comtemplate <class OS> 82010850SGiacomo.Gabrielli@arm.comSyscallReturn 82110850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, Process *process, 82210850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 82310850SGiacomo.Gabrielli@arm.com{ 82410850SGiacomo.Gabrielli@arm.com int index = 0; 82510850SGiacomo.Gabrielli@arm.com 82610850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 82710850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 82810850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 82910850SGiacomo.Gabrielli@arm.com 83010850SGiacomo.Gabrielli@arm.com std::string old_name; 83110850SGiacomo.Gabrielli@arm.com 8326640Svince@csl.cornell.edu if (!tc->getMemProxy().tryReadString(old_name, 8336640Svince@csl.cornell.edu process->getSyscallArg(tc, index))) 8346640Svince@csl.cornell.edu return -EFAULT; 83511851Sbrandon.potter@amd.com 83611851Sbrandon.potter@amd.com int newdirfd = process->getSyscallArg(tc, index); 8376640Svince@csl.cornell.edu if (newdirfd != OS::TGT_AT_FDCWD) 8386640Svince@csl.cornell.edu warn("renameat: third argument not AT_FDCWD; unlikely to work"); 8396701Sgblack@eecs.umich.edu 8406701Sgblack@eecs.umich.edu std::string new_name; 84110793Sbrandon.potter@amd.com 8426640Svince@csl.cornell.edu if (!tc->getMemProxy().tryReadString(new_name, 84311758Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) 84411758Sbrandon.potter@amd.com return -EFAULT; 84511758Sbrandon.potter@amd.com 8466640Svince@csl.cornell.edu // Adjust path for current working directory 8478706Sandreas.hansson@arm.com old_name = process->fullPath(old_name); 8486640Svince@csl.cornell.edu new_name = process->fullPath(new_name); 8496701Sgblack@eecs.umich.edu 8506640Svince@csl.cornell.edu int result = rename(old_name.c_str(), new_name.c_str()); 851360SN/A return (result == -1) ? -errno : result; 8521999SN/A} 8531999SN/A 8541999SN/A/// Target sysinfo() handler. 85511851Sbrandon.potter@amd.comtemplate <class OS> 8562680Sktlim@umich.eduSyscallReturn 8571999SN/AsysinfoFunc(SyscallDesc *desc, int callnum, Process *process, 8581999SN/A ThreadContext *tc) 8591999SN/A{ 8606701Sgblack@eecs.umich.edu 8618852Sandreas.hansson@arm.com int index = 0; 8626701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 8631999SN/A sysinfo(process->getSyscallArg(tc, index)); 8646701Sgblack@eecs.umich.edu 8651999SN/A sysinfo->uptime = seconds_since_epoch; 8666701Sgblack@eecs.umich.edu sysinfo->totalram = process->system->memSize(); 8671999SN/A sysinfo->mem_unit = 1; 8681999SN/A 8691999SN/A sysinfo.copyOut(tc->getMemProxy()); 8701999SN/A 8711999SN/A return 0; 8723669Sbinkertn@umich.edu} 8733669Sbinkertn@umich.edu 8743669Sbinkertn@umich.edu/// Target chmod() handler. 8751999SN/Atemplate <class OS> 8761999SN/ASyscallReturn 8771999SN/AchmodFunc(SyscallDesc *desc, int callnum, Process *process, 8782218SN/A ThreadContext *tc) 8791999SN/A{ 8801999SN/A std::string path; 8811999SN/A 8821999SN/A int index = 0; 8831999SN/A if (!tc->getMemProxy().tryReadString(path, 8841999SN/A process->getSyscallArg(tc, index))) { 8851999SN/A return -EFAULT; 8861999SN/A } 88711856Sbrandon.potter@amd.com 8881999SN/A uint32_t mode = process->getSyscallArg(tc, index); 8896701Sgblack@eecs.umich.edu mode_t hostMode = 0; 89011856Sbrandon.potter@amd.com 89111856Sbrandon.potter@amd.com // XXX translate mode flags via OS::something??? 89210931Sbrandon.potter@amd.com hostMode = mode; 89311856Sbrandon.potter@amd.com 89411856Sbrandon.potter@amd.com // Adjust path for current working directory 8951999SN/A path = process->fullPath(path); 89611856Sbrandon.potter@amd.com 8971999SN/A // do the chmod 89811856Sbrandon.potter@amd.com int result = chmod(path.c_str(), hostMode); 8991999SN/A if (result < 0) 90011856Sbrandon.potter@amd.com return -errno; 9011999SN/A 90211856Sbrandon.potter@amd.com return 0; 9031999SN/A} 9041999SN/A 9055877Shsul@eecs.umich.edu 9065877Shsul@eecs.umich.edu/// Target fchmod() handler. 9075877Shsul@eecs.umich.edutemplate <class OS> 90811851Sbrandon.potter@amd.comSyscallReturn 9095877Shsul@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 9106701Sgblack@eecs.umich.edu{ 9116701Sgblack@eecs.umich.edu int index = 0; 9126701Sgblack@eecs.umich.edu int tgt_fd = p->getSyscallArg(tc, index); 9136701Sgblack@eecs.umich.edu uint32_t mode = p->getSyscallArg(tc, index); 9146701Sgblack@eecs.umich.edu 91510027SChris.Adeniyi-Jones@arm.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 91610027SChris.Adeniyi-Jones@arm.com if (!ffdp) 91710027SChris.Adeniyi-Jones@arm.com return -EBADF; 91810027SChris.Adeniyi-Jones@arm.com int sim_fd = ffdp->getSimFD(); 91910027SChris.Adeniyi-Jones@arm.com 9205877Shsul@eecs.umich.edu mode_t hostMode = mode; 92110318Sandreas.hansson@arm.com 92210318Sandreas.hansson@arm.com int result = fchmod(sim_fd, hostMode); 9235877Shsul@eecs.umich.edu 9245877Shsul@eecs.umich.edu return (result < 0) ? -errno : 0; 9255877Shsul@eecs.umich.edu} 9265877Shsul@eecs.umich.edu 92710486Stjablin@gmail.com/// Target mremap() handler. 92810486Stjablin@gmail.comtemplate <class OS> 9295877Shsul@eecs.umich.eduSyscallReturn 93011905SBrandon.Potter@amd.commremapFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 93111905SBrandon.Potter@amd.com{ 93211905SBrandon.Potter@amd.com int index = 0; 93311905SBrandon.Potter@amd.com Addr start = process->getSyscallArg(tc, index); 93410027SChris.Adeniyi-Jones@arm.com uint64_t old_length = process->getSyscallArg(tc, index); 9355877Shsul@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 93611905SBrandon.Potter@amd.com uint64_t flags = process->getSyscallArg(tc, index); 93711905SBrandon.Potter@amd.com uint64_t provided_address = 0; 9385877Shsul@eecs.umich.edu bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 9395877Shsul@eecs.umich.edu 94010027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 9415877Shsul@eecs.umich.edu provided_address = process->getSyscallArg(tc, index); 9425877Shsul@eecs.umich.edu 9435877Shsul@eecs.umich.edu if ((start % TheISA::PageBytes != 0) || 94410027SChris.Adeniyi-Jones@arm.com (provided_address % TheISA::PageBytes != 0)) { 94511905SBrandon.Potter@amd.com warn("mremap failing: arguments not page aligned"); 94610027SChris.Adeniyi-Jones@arm.com return -EINVAL; 94710027SChris.Adeniyi-Jones@arm.com } 94810027SChris.Adeniyi-Jones@arm.com 94910027SChris.Adeniyi-Jones@arm.com new_length = roundUp(new_length, TheISA::PageBytes); 9505877Shsul@eecs.umich.edu 95110027SChris.Adeniyi-Jones@arm.com if (new_length > old_length) { 95210027SChris.Adeniyi-Jones@arm.com std::shared_ptr<MemState> mem_state = process->memState; 95310027SChris.Adeniyi-Jones@arm.com Addr mmap_end = mem_state->getMmapEnd(); 95410027SChris.Adeniyi-Jones@arm.com 95511905SBrandon.Potter@amd.com if ((start + old_length) == mmap_end && 95610027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 95711905SBrandon.Potter@amd.com uint64_t diff = new_length - old_length; 95810027SChris.Adeniyi-Jones@arm.com process->allocateMem(mmap_end, diff); 95910027SChris.Adeniyi-Jones@arm.com mem_state->setMmapEnd(mmap_end + diff); 96010027SChris.Adeniyi-Jones@arm.com return start; 96110027SChris.Adeniyi-Jones@arm.com } else { 96210027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 96310027SChris.Adeniyi-Jones@arm.com warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 9645877Shsul@eecs.umich.edu return -ENOMEM; 9655877Shsul@eecs.umich.edu } else { 9665877Shsul@eecs.umich.edu uint64_t new_start = use_provided_address ? 96710027SChris.Adeniyi-Jones@arm.com provided_address : mmap_end; 96810027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 9698601Ssteve.reinhardt@amd.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 97010027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 9715877Shsul@eecs.umich.edu new_length - old_length); 9725877Shsul@eecs.umich.edu // add on the remaining unallocated pages 9731999SN/A process->allocateMem(new_start + old_length, 974378SN/A new_length - old_length, 975360SN/A use_provided_address /* clobber */); 9761450SN/A if (!use_provided_address) 97711851Sbrandon.potter@amd.com mem_state->setMmapEnd(mmap_end + new_length); 9782680Sktlim@umich.edu if (use_provided_address && 979360SN/A new_start + new_length > mem_state->getMmapEnd()) { 980360SN/A // something fishy going on here, at least notify the user 981360SN/A // @todo: increase mmap_end? 9826701Sgblack@eecs.umich.edu warn("mmap region limit exceeded with MREMAP_FIXED\n"); 9838852Sandreas.hansson@arm.com } 9846701Sgblack@eecs.umich.edu warn("returning %08p as start\n", new_start); 9856701Sgblack@eecs.umich.edu return new_start; 9866701Sgblack@eecs.umich.edu } 9876701Sgblack@eecs.umich.edu } 988360SN/A } else { 9893669Sbinkertn@umich.edu if (use_provided_address && provided_address != start) 9903669Sbinkertn@umich.edu process->pTable->remap(start, new_length, provided_address); 9913669Sbinkertn@umich.edu process->pTable->unmap(start + new_length, old_length - new_length); 992360SN/A return use_provided_address ? provided_address : start; 993360SN/A } 994360SN/A} 995360SN/A 9962218SN/A/// Target stat() handler. 997360SN/Atemplate <class OS> 9988706Sandreas.hansson@arm.comSyscallReturn 999360SN/AstatFunc(SyscallDesc *desc, int callnum, Process *process, 10001458SN/A ThreadContext *tc) 1001360SN/A{ 1002360SN/A std::string path; 1003360SN/A 10045074Ssaidi@eecs.umich.edu int index = 0; 10055074Ssaidi@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 10065074Ssaidi@eecs.umich.edu process->getSyscallArg(tc, index))) { 100711851Sbrandon.potter@amd.com return -EFAULT; 10085074Ssaidi@eecs.umich.edu } 10095074Ssaidi@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10105074Ssaidi@eecs.umich.edu 10115074Ssaidi@eecs.umich.edu // Adjust path for current working directory 10126701Sgblack@eecs.umich.edu path = process->fullPath(path); 10138852Sandreas.hansson@arm.com 10146701Sgblack@eecs.umich.edu struct stat hostBuf; 10155074Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 10166701Sgblack@eecs.umich.edu 10175074Ssaidi@eecs.umich.edu if (result < 0) 10185074Ssaidi@eecs.umich.edu return -errno; 10195074Ssaidi@eecs.umich.edu 10205074Ssaidi@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10215208Ssaidi@eecs.umich.edu 10225208Ssaidi@eecs.umich.edu return 0; 10235208Ssaidi@eecs.umich.edu} 10245208Ssaidi@eecs.umich.edu 10255074Ssaidi@eecs.umich.edu 10265074Ssaidi@eecs.umich.edu/// Target stat64() handler. 10275208Ssaidi@eecs.umich.edutemplate <class OS> 10285074Ssaidi@eecs.umich.eduSyscallReturn 10295074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, Process *process, 10305074Ssaidi@eecs.umich.edu ThreadContext *tc) 10315074Ssaidi@eecs.umich.edu{ 10328706Sandreas.hansson@arm.com std::string path; 10335074Ssaidi@eecs.umich.edu 10345074Ssaidi@eecs.umich.edu int index = 0; 10355074Ssaidi@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 10365074Ssaidi@eecs.umich.edu process->getSyscallArg(tc, index))) 10375074Ssaidi@eecs.umich.edu return -EFAULT; 103810027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 103910027SChris.Adeniyi-Jones@arm.com 104010027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 104111851Sbrandon.potter@amd.com path = process->fullPath(path); 104210027SChris.Adeniyi-Jones@arm.com 104310027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 104410027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 104510027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 104610027SChris.Adeniyi-Jones@arm.com#else 104710793Sbrandon.potter@amd.com struct stat64 hostBuf; 104810027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 104910027SChris.Adeniyi-Jones@arm.com#endif 105010027SChris.Adeniyi-Jones@arm.com 105110027SChris.Adeniyi-Jones@arm.com if (result < 0) 105210027SChris.Adeniyi-Jones@arm.com return -errno; 105310027SChris.Adeniyi-Jones@arm.com 105410027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 105510027SChris.Adeniyi-Jones@arm.com 105610027SChris.Adeniyi-Jones@arm.com return 0; 105710027SChris.Adeniyi-Jones@arm.com} 105810027SChris.Adeniyi-Jones@arm.com 105910027SChris.Adeniyi-Jones@arm.com 106010027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 106110027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 106210027SChris.Adeniyi-Jones@arm.comSyscallReturn 106310027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, Process *process, 106410027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 106510027SChris.Adeniyi-Jones@arm.com{ 106610027SChris.Adeniyi-Jones@arm.com int index = 0; 106710027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 106810027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 106910027SChris.Adeniyi-Jones@arm.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 107010027SChris.Adeniyi-Jones@arm.com 107110027SChris.Adeniyi-Jones@arm.com std::string path; 107210027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 107310027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 107410027SChris.Adeniyi-Jones@arm.com return -EFAULT; 10751999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 10761999SN/A 10771999SN/A // Adjust path for current working directory 107811856Sbrandon.potter@amd.com path = process->fullPath(path); 10791999SN/A 10806701Sgblack@eecs.umich.edu#if NO_STAT64 108111856Sbrandon.potter@amd.com struct stat hostBuf; 108211856Sbrandon.potter@amd.com int result = stat(path.c_str(), &hostBuf); 108310931Sbrandon.potter@amd.com#else 108411856Sbrandon.potter@amd.com struct stat64 hostBuf; 108511856Sbrandon.potter@amd.com int result = stat64(path.c_str(), &hostBuf); 10861999SN/A#endif 108711856Sbrandon.potter@amd.com 10881999SN/A if (result < 0) 10892764Sstever@eecs.umich.edu return -errno; 10902064SN/A 109110931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10922064SN/A 10932064SN/A return 0; 109410931Sbrandon.potter@amd.com} 10952064SN/A 10961999SN/A 10971999SN/A/// Target fstat64() handler. 10982218SN/Atemplate <class OS> 10991999SN/ASyscallReturn 110010931Sbrandon.potter@amd.comfstat64Func(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 11011999SN/A{ 11021999SN/A int index = 0; 11031999SN/A int tgt_fd = p->getSyscallArg(tc, index); 11041999SN/A Addr bufPtr = p->getSyscallArg(tc, index); 11051999SN/A 1106378SN/A auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 1107360SN/A if (!ffdp) 11081450SN/A return -EBADF; 110911851Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 11102680Sktlim@umich.edu 1111360SN/A#if NO_STAT64 1112360SN/A struct stat hostBuf; 1113360SN/A int result = fstat(sim_fd, &hostBuf); 11146701Sgblack@eecs.umich.edu#else 11158852Sandreas.hansson@arm.com struct stat64 hostBuf; 11166701Sgblack@eecs.umich.edu int result = fstat64(sim_fd, &hostBuf); 11176701Sgblack@eecs.umich.edu#endif 11186701Sgblack@eecs.umich.edu 11196701Sgblack@eecs.umich.edu if (result < 0) 1120360SN/A return -errno; 11213669Sbinkertn@umich.edu 11223669Sbinkertn@umich.edu copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11233669Sbinkertn@umich.edu 1124360SN/A return 0; 1125360SN/A} 1126360SN/A 1127360SN/A 11281458SN/A/// Target lstat() handler. 1129360SN/Atemplate <class OS> 11308706Sandreas.hansson@arm.comSyscallReturn 1131360SN/AlstatFunc(SyscallDesc *desc, int callnum, Process *process, 11321458SN/A ThreadContext *tc) 1133360SN/A{ 1134360SN/A std::string path; 11351999SN/A 11361999SN/A int index = 0; 11371999SN/A if (!tc->getMemProxy().tryReadString(path, 113811851Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 11392680Sktlim@umich.edu return -EFAULT; 11401999SN/A } 11411999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11421999SN/A 11436701Sgblack@eecs.umich.edu // Adjust path for current working directory 11448852Sandreas.hansson@arm.com path = process->fullPath(path); 11456701Sgblack@eecs.umich.edu 11466701Sgblack@eecs.umich.edu struct stat hostBuf; 11476701Sgblack@eecs.umich.edu int result = lstat(path.c_str(), &hostBuf); 11486701Sgblack@eecs.umich.edu 11491999SN/A if (result < 0) 11503669Sbinkertn@umich.edu return -errno; 11513669Sbinkertn@umich.edu 11523669Sbinkertn@umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11532764Sstever@eecs.umich.edu 11542064SN/A return 0; 11552064SN/A} 11562064SN/A 11571999SN/A/// Target lstat64() handler. 11581999SN/Atemplate <class OS> 11592064SN/ASyscallReturn 11601999SN/Alstat64Func(SyscallDesc *desc, int callnum, Process *process, 11611999SN/A ThreadContext *tc) 11621999SN/A{ 11631999SN/A std::string path; 11648706Sandreas.hansson@arm.com 11651999SN/A int index = 0; 11661999SN/A if (!tc->getMemProxy().tryReadString(path, 11671999SN/A process->getSyscallArg(tc, index))) { 11681999SN/A return -EFAULT; 1169378SN/A } 1170360SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11711450SN/A 117211856Sbrandon.potter@amd.com // Adjust path for current working directory 1173360SN/A path = process->fullPath(path); 11746701Sgblack@eecs.umich.edu 117511856Sbrandon.potter@amd.com#if NO_STAT64 117611856Sbrandon.potter@amd.com struct stat hostBuf; 1177360SN/A int result = lstat(path.c_str(), &hostBuf); 117811380Salexandru.dutu@amd.com#else 1179360SN/A struct stat64 hostBuf; 118011856Sbrandon.potter@amd.com int result = lstat64(path.c_str(), &hostBuf); 118111856Sbrandon.potter@amd.com#endif 11821458SN/A 118311856Sbrandon.potter@amd.com if (result < 0) 1184360SN/A return -errno; 1185360SN/A 118610931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1187360SN/A 1188360SN/A return 0; 11891458SN/A} 1190360SN/A 119110931Sbrandon.potter@amd.com/// Target fstat() handler. 11922021SN/Atemplate <class OS> 11931458SN/ASyscallReturn 1194360SN/AfstatFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 1195360SN/A{ 1196360SN/A int index = 0; 11971706SN/A int tgt_fd = p->getSyscallArg(tc, index); 11981706SN/A Addr bufPtr = p->getSyscallArg(tc, index); 11991706SN/A 120011851Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 12012680Sktlim@umich.edu 12021706SN/A auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 120311799Sbrandon.potter@amd.com if (!ffdp) 120411799Sbrandon.potter@amd.com return -EBADF; 120511799Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 12061706SN/A 12071706SN/A struct stat hostBuf; 12086701Sgblack@eecs.umich.edu int result = fstat(sim_fd, &hostBuf); 12098852Sandreas.hansson@arm.com 12106701Sgblack@eecs.umich.edu if (result < 0) 12116701Sgblack@eecs.umich.edu return -errno; 12126701Sgblack@eecs.umich.edu 12136701Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 12141706SN/A 12153669Sbinkertn@umich.edu return 0; 12163669Sbinkertn@umich.edu} 12173669Sbinkertn@umich.edu 12181706SN/A 12191706SN/A/// Target statfs() handler. 12201706SN/Atemplate <class OS> 12211706SN/ASyscallReturn 12222218SN/AstatfsFunc(SyscallDesc *desc, int callnum, Process *process, 12231706SN/A ThreadContext *tc) 122411759Sbrandon.potter@amd.com{ 122511799Sbrandon.potter@amd.com#if NO_STATFS 12261706SN/A warn("Host OS cannot support calls to statfs. Ignoring syscall"); 12271706SN/A#else 12281706SN/A std::string path; 122911886Sbrandon.potter@amd.com 123011886Sbrandon.potter@amd.com int index = 0; 123111886Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 123211886Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 123311886Sbrandon.potter@amd.com return -EFAULT; 123411886Sbrandon.potter@amd.com } 123511886Sbrandon.potter@amd.com Addr bufPtr = process->getSyscallArg(tc, index); 123611886Sbrandon.potter@amd.com 123711886Sbrandon.potter@amd.com // Adjust path for current working directory 123811886Sbrandon.potter@amd.com path = process->fullPath(path); 123911886Sbrandon.potter@amd.com 124011886Sbrandon.potter@amd.com struct statfs hostBuf; 124111886Sbrandon.potter@amd.com int result = statfs(path.c_str(), &hostBuf); 124211886Sbrandon.potter@amd.com 124311886Sbrandon.potter@amd.com if (result < 0) 124411886Sbrandon.potter@amd.com return -errno; 124511886Sbrandon.potter@amd.com 124611886Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 124711886Sbrandon.potter@amd.com#endif 124811886Sbrandon.potter@amd.com return 0; 124911886Sbrandon.potter@amd.com} 125011886Sbrandon.potter@amd.com 125111886Sbrandon.potter@amd.comtemplate <class OS> 125211886Sbrandon.potter@amd.comSyscallReturn 125311886Sbrandon.potter@amd.comcloneFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 125411886Sbrandon.potter@amd.com{ 125511886Sbrandon.potter@amd.com int index = 0; 125611886Sbrandon.potter@amd.com TheISA::IntReg flags = p->getSyscallArg(tc, index); 125711886Sbrandon.potter@amd.com TheISA::IntReg newStack = p->getSyscallArg(tc, index); 125811886Sbrandon.potter@amd.com Addr ptidPtr = p->getSyscallArg(tc, index); 125911886Sbrandon.potter@amd.com Addr ctidPtr = p->getSyscallArg(tc, index); 126011886Sbrandon.potter@amd.com Addr tlsPtr M5_VAR_USED = p->getSyscallArg(tc, index); 126111886Sbrandon.potter@amd.com 126211886Sbrandon.potter@amd.com if (((flags & OS::TGT_CLONE_SIGHAND)&& !(flags & OS::TGT_CLONE_VM)) || 126311886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_THREAD) && !(flags & OS::TGT_CLONE_SIGHAND)) || 126411886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_FS) && (flags & OS::TGT_CLONE_NEWNS)) || 126511886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_NEWIPC) && (flags & OS::TGT_CLONE_SYSVSEM)) || 126611886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_NEWPID) && (flags & OS::TGT_CLONE_THREAD)) || 126711886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_VM) && !(newStack))) 126811886Sbrandon.potter@amd.com return -EINVAL; 126911886Sbrandon.potter@amd.com 127011886Sbrandon.potter@amd.com ThreadContext *ctc; 127111886Sbrandon.potter@amd.com if (!(ctc = p->findFreeContext())) 127211886Sbrandon.potter@amd.com fatal("clone: no spare thread context in system"); 127311886Sbrandon.potter@amd.com 127411886Sbrandon.potter@amd.com /** 127511886Sbrandon.potter@amd.com * Note that ProcessParams is generated by swig and there are no other 127611886Sbrandon.potter@amd.com * examples of how to create anything but this default constructor. The 127711886Sbrandon.potter@amd.com * fields are manually initialized instead of passing parameters to the 127811886Sbrandon.potter@amd.com * constructor. 127911886Sbrandon.potter@amd.com */ 128011886Sbrandon.potter@amd.com ProcessParams *pp = new ProcessParams(); 128111886Sbrandon.potter@amd.com pp->executable.assign(*(new std::string(p->progName()))); 128211886Sbrandon.potter@amd.com pp->cmd.push_back(*(new std::string(p->progName()))); 128311886Sbrandon.potter@amd.com pp->system = p->system; 128411886Sbrandon.potter@amd.com pp->cwd.assign(p->getcwd()); 128511886Sbrandon.potter@amd.com pp->input.assign("stdin"); 128611886Sbrandon.potter@amd.com pp->output.assign("stdout"); 128711886Sbrandon.potter@amd.com pp->errout.assign("stderr"); 128811886Sbrandon.potter@amd.com pp->uid = p->uid(); 128911886Sbrandon.potter@amd.com pp->euid = p->euid(); 129011886Sbrandon.potter@amd.com pp->gid = p->gid(); 129111886Sbrandon.potter@amd.com pp->egid = p->egid(); 129211886Sbrandon.potter@amd.com 129311886Sbrandon.potter@amd.com /* Find the first free PID that's less than the maximum */ 129411886Sbrandon.potter@amd.com std::set<int> const& pids = p->system->PIDs; 129511886Sbrandon.potter@amd.com int temp_pid = *pids.begin(); 129611886Sbrandon.potter@amd.com do { 129711886Sbrandon.potter@amd.com temp_pid++; 129811886Sbrandon.potter@amd.com } while (pids.find(temp_pid) != pids.end()); 129911886Sbrandon.potter@amd.com if (temp_pid >= System::maxPID) 130011911SBrandon.Potter@amd.com fatal("temp_pid is too large: %d", temp_pid); 130111911SBrandon.Potter@amd.com 130211911SBrandon.Potter@amd.com pp->pid = temp_pid; 130311911SBrandon.Potter@amd.com pp->ppid = (flags & OS::TGT_CLONE_THREAD) ? p->ppid() : p->pid(); 130411911SBrandon.Potter@amd.com Process *cp = pp->create(); 130511911SBrandon.Potter@amd.com delete pp; 130611911SBrandon.Potter@amd.com 130711886Sbrandon.potter@amd.com Process *owner = ctc->getProcessPtr(); 130811886Sbrandon.potter@amd.com ctc->setProcessPtr(cp); 130911886Sbrandon.potter@amd.com cp->assignThreadContext(ctc->contextId()); 131011886Sbrandon.potter@amd.com owner->revokeThreadContext(ctc->contextId()); 131111886Sbrandon.potter@amd.com 131211886Sbrandon.potter@amd.com if (flags & OS::TGT_CLONE_PARENT_SETTID) { 131311886Sbrandon.potter@amd.com BufferArg ptidBuf(ptidPtr, sizeof(long)); 131411886Sbrandon.potter@amd.com long *ptid = (long *)ptidBuf.bufferPtr(); 131511886Sbrandon.potter@amd.com *ptid = cp->pid(); 131611886Sbrandon.potter@amd.com ptidBuf.copyOut(tc->getMemProxy()); 131711886Sbrandon.potter@amd.com } 131811886Sbrandon.potter@amd.com 131911886Sbrandon.potter@amd.com cp->initState(); 132011886Sbrandon.potter@amd.com p->clone(tc, ctc, cp, flags); 132111886Sbrandon.potter@amd.com 132211886Sbrandon.potter@amd.com if (flags & OS::TGT_CLONE_CHILD_SETTID) { 132311886Sbrandon.potter@amd.com BufferArg ctidBuf(ctidPtr, sizeof(long)); 132411886Sbrandon.potter@amd.com long *ctid = (long *)ctidBuf.bufferPtr(); 132511886Sbrandon.potter@amd.com *ctid = cp->pid(); 132611886Sbrandon.potter@amd.com ctidBuf.copyOut(ctc->getMemProxy()); 132711886Sbrandon.potter@amd.com } 132811886Sbrandon.potter@amd.com 132911886Sbrandon.potter@amd.com if (flags & OS::TGT_CLONE_CHILD_CLEARTID) 133011886Sbrandon.potter@amd.com cp->childClearTID = (uint64_t)ctidPtr; 133111886Sbrandon.potter@amd.com 133211886Sbrandon.potter@amd.com ctc->clearArchRegs(); 133311886Sbrandon.potter@amd.com 133411886Sbrandon.potter@amd.com#if THE_ISA == ALPHA_ISA 133511886Sbrandon.potter@amd.com TheISA::copyMiscRegs(tc, ctc); 133611886Sbrandon.potter@amd.com#elif THE_ISA == SPARC_ISA 133711886Sbrandon.potter@amd.com TheISA::copyRegs(tc, ctc); 133811886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::NumIntArchRegs + 6, 0); 133911886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::NumIntArchRegs + 4, 0); 134011886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::NumIntArchRegs + 3, TheISA::NWindows - 2); 134111886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::NumIntArchRegs + 5, TheISA::NWindows); 134211886Sbrandon.potter@amd.com ctc->setMiscReg(TheISA::MISCREG_CWP, 0); 134311886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::NumIntArchRegs + 7, 0); 134411886Sbrandon.potter@amd.com ctc->setMiscRegNoEffect(TheISA::MISCREG_TL, 0); 134511886Sbrandon.potter@amd.com ctc->setMiscReg(TheISA::MISCREG_ASI, TheISA::ASI_PRIMARY); 134611886Sbrandon.potter@amd.com for (int y = 8; y < 32; y++) 134711886Sbrandon.potter@amd.com ctc->setIntReg(y, tc->readIntReg(y)); 134811886Sbrandon.potter@amd.com#elif THE_ISA == ARM_ISA or THE_ISA == X86_ISA 134911886Sbrandon.potter@amd.com TheISA::copyRegs(tc, ctc); 135011886Sbrandon.potter@amd.com#endif 135111886Sbrandon.potter@amd.com 135211886Sbrandon.potter@amd.com#if THE_ISA == X86_ISA 135311886Sbrandon.potter@amd.com if (flags & OS::TGT_CLONE_SETTLS) { 135411886Sbrandon.potter@amd.com ctc->setMiscRegNoEffect(TheISA::MISCREG_FS_BASE, tlsPtr); 135511886Sbrandon.potter@amd.com ctc->setMiscRegNoEffect(TheISA::MISCREG_FS_EFF_BASE, tlsPtr); 135611886Sbrandon.potter@amd.com } 135711886Sbrandon.potter@amd.com#endif 135811886Sbrandon.potter@amd.com 135911886Sbrandon.potter@amd.com if (newStack) 136011886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::StackPointerReg, newStack); 13611706SN/A 13621706SN/A cp->setSyscallReturn(ctc, 0); 13631706SN/A 13641706SN/A#if THE_ISA == ALPHA_ISA 136511856Sbrandon.potter@amd.com ctc->setIntReg(TheISA::SyscallSuccessReg, 0); 13661706SN/A#elif THE_ISA == SPARC_ISA 13676701Sgblack@eecs.umich.edu tc->setIntReg(TheISA::SyscallPseudoReturnReg, 0); 136811856Sbrandon.potter@amd.com ctc->setIntReg(TheISA::SyscallPseudoReturnReg, 1); 136911856Sbrandon.potter@amd.com#endif 13701706SN/A 137111856Sbrandon.potter@amd.com ctc->pcState(tc->nextInstAddr()); 137211856Sbrandon.potter@amd.com ctc->activate(); 13731706SN/A 137411856Sbrandon.potter@amd.com return cp->pid(); 13751706SN/A} 13761706SN/A 137710931Sbrandon.potter@amd.com/// Target fstatfs() handler. 13781706SN/Atemplate <class OS> 13791706SN/ASyscallReturn 13802218SN/AfstatfsFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 13811706SN/A{ 138211759Sbrandon.potter@amd.com int index = 0; 13831706SN/A int tgt_fd = p->getSyscallArg(tc, index); 13841706SN/A Addr bufPtr = p->getSyscallArg(tc, index); 13851706SN/A 13861706SN/A auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 13871706SN/A if (!ffdp) 13881999SN/A return -EBADF; 13891999SN/A int sim_fd = ffdp->getSimFD(); 13901999SN/A 139111856Sbrandon.potter@amd.com struct statfs hostBuf; 13921999SN/A int result = fstatfs(sim_fd, &hostBuf); 13936701Sgblack@eecs.umich.edu 139411856Sbrandon.potter@amd.com if (result < 0) 139510931Sbrandon.potter@amd.com return -errno; 139611856Sbrandon.potter@amd.com 139711856Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 13981999SN/A 139911856Sbrandon.potter@amd.com return 0; 14001999SN/A} 140111856Sbrandon.potter@amd.com 140211856Sbrandon.potter@amd.com 140311856Sbrandon.potter@amd.com/// Target writev() handler. 14041999SN/Atemplate <class OS> 14056227Snate@binkert.orgSyscallReturn 14061999SN/AwritevFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 14072461SN/A{ 140811856Sbrandon.potter@amd.com int index = 0; 140911856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 14108737Skoansin.tan@gmail.com 14111999SN/A auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 141211856Sbrandon.potter@amd.com if (!hbfdp) 141311856Sbrandon.potter@amd.com return -EBADF; 14141999SN/A int sim_fd = hbfdp->getSimFD(); 14151999SN/A 141610931Sbrandon.potter@amd.com SETranslatingPortProxy &prox = tc->getMemProxy(); 14171999SN/A uint64_t tiov_base = p->getSyscallArg(tc, index); 14186227Snate@binkert.org size_t count = p->getSyscallArg(tc, index); 14191999SN/A struct iovec hiov[count]; 14201999SN/A for (size_t i = 0; i < count; ++i) { 14211999SN/A typename OS::tgt_iovec tiov; 14222218SN/A 14231999SN/A prox.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 142410629Sjthestness@gmail.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 14251999SN/A hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 14261999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 142711385Sbrandon.potter@amd.com prox.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 1428360SN/A hiov[i].iov_len); 14291450SN/A } 143011851Sbrandon.potter@amd.com 143111385Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 1432360SN/A 14336701Sgblack@eecs.umich.edu for (size_t i = 0; i < count; ++i) 14346701Sgblack@eecs.umich.edu delete [] (char *)hiov[i].iov_base; 14356701Sgblack@eecs.umich.edu 143611383Sbrandon.potter@amd.com if (result < 0) 143711383Sbrandon.potter@amd.com return -errno; 14388324Ssteve.reinhardt@amd.com 143910486Stjablin@gmail.com return result; 1440360SN/A} 144111385Sbrandon.potter@amd.com 144211385Sbrandon.potter@amd.com/// Real mmap handler. 14439008Sgblack@eecs.umich.edutemplate <class OS> 144411383Sbrandon.potter@amd.comSyscallReturn 144511383Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 144611383Sbrandon.potter@amd.com bool is_mmap2) 144711383Sbrandon.potter@amd.com{ 144811383Sbrandon.potter@amd.com int index = 0; 144911383Sbrandon.potter@amd.com Addr start = p->getSyscallArg(tc, index); 145011383Sbrandon.potter@amd.com uint64_t length = p->getSyscallArg(tc, index); 145111383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 145211383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 14538324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 145411383Sbrandon.potter@amd.com int offset = p->getSyscallArg(tc, index); 145511383Sbrandon.potter@amd.com 145611383Sbrandon.potter@amd.com if (is_mmap2) 145711383Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 145811383Sbrandon.potter@amd.com 145911383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 146011383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 146111383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 146211383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 146311383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 146411383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 146511383Sbrandon.potter@amd.com !length) { 146611383Sbrandon.potter@amd.com return -EINVAL; 146711383Sbrandon.potter@amd.com } 146811383Sbrandon.potter@amd.com 146911383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 147011383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 147111383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 147211383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 147311383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 147411383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 147511383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 147611383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 147711383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 14788324Ssteve.reinhardt@amd.com // which is backed by the mapping. The shared mapping problem is the 14795877Shsul@eecs.umich.edu // same as what was mentioned about the anonymous mappings. For 148010486Stjablin@gmail.com // file-backed mappings, the writes to the file are difficult 148110486Stjablin@gmail.com // because it requires syncing what the mapping holds with the file 148211383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 148311383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 148411383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 148511856Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 148611624Smichael.lebeane@amd.com // works well enough. The guarantee is provided by the msync system 148711856Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 148811856Sbrandon.potter@amd.com // a call to msync, but that again would require more information 148911856Sbrandon.potter@amd.com // than we currently maintain. 149011856Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 149111624Smichael.lebeane@amd.com "unsupported. The write succeeds on the target, but it " 149211624Smichael.lebeane@amd.com "will not be propagated to the host or shared mappings"); 149311624Smichael.lebeane@amd.com } 149411856Sbrandon.potter@amd.com 149511856Sbrandon.potter@amd.com length = roundUp(length, TheISA::PageBytes); 149611383Sbrandon.potter@amd.com 149711856Sbrandon.potter@amd.com int sim_fd = -1; 1498360SN/A uint8_t *pmap = nullptr; 149911913SBrandon.Potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 150011383Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 15018600Ssteve.reinhardt@amd.com 150211383Sbrandon.potter@amd.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>(fdep); 150311383Sbrandon.potter@amd.com if (dfdp) { 150411383Sbrandon.potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 15058600Ssteve.reinhardt@amd.com return emul_driver->mmap(p, tc, start, length, prot, 15062544SN/A tgt_flags, tgt_fd, offset); 15072544SN/A } 150811383Sbrandon.potter@amd.com 150911383Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 151011383Sbrandon.potter@amd.com if (!ffdp) 151111905SBrandon.Potter@amd.com return -EBADF; 151211905SBrandon.Potter@amd.com sim_fd = ffdp->getSimFD(); 151311905SBrandon.Potter@amd.com 151411905SBrandon.Potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 151511905SBrandon.Potter@amd.com sim_fd, offset); 151611905SBrandon.Potter@amd.com 151711905SBrandon.Potter@amd.com if (pmap == (decltype(pmap))-1) { 151811383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 151911383Sbrandon.potter@amd.com return -errno; 152011383Sbrandon.potter@amd.com } 152111383Sbrandon.potter@amd.com } 152211383Sbrandon.potter@amd.com 152311383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 152411383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 152511383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 152611383Sbrandon.potter@amd.com std::shared_ptr<MemState> mem_state = p->memState; 152711383Sbrandon.potter@amd.com Addr mmap_end = mem_state->getMmapEnd(); 152811383Sbrandon.potter@amd.com 152911383Sbrandon.potter@amd.com start = p->mmapGrowsDown() ? mmap_end - length : mmap_end; 153011383Sbrandon.potter@amd.com mmap_end = p->mmapGrowsDown() ? start : mmap_end + length; 153111383Sbrandon.potter@amd.com 153211383Sbrandon.potter@amd.com mem_state->setMmapEnd(mmap_end); 15338600Ssteve.reinhardt@amd.com } 15346672Sgblack@eecs.umich.edu 15358600Ssteve.reinhardt@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 153611383Sbrandon.potter@amd.com start, start + length - 1); 153711383Sbrandon.potter@amd.com 153811383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 15398601Ssteve.reinhardt@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 15402544SN/A // because we ignore the start hint if TGT_MAP_FIXED is not set. 154111383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 154211383Sbrandon.potter@amd.com if (clobber) { 154311383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 154411383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 154511383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 154611383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 154711383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 154811383Sbrandon.potter@amd.com } 154911383Sbrandon.potter@amd.com } 155011383Sbrandon.potter@amd.com 155111383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 155211383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 155311383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 155411383Sbrandon.potter@amd.com p->allocateMem(start, length, clobber); 155511383Sbrandon.potter@amd.com 155611383Sbrandon.potter@amd.com // Transfer content into target address space. 155711383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 155811383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 155911383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 156011383Sbrandon.potter@amd.com // with something like: 156111383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 156211383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 156311383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 156411383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 156511383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 156611383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 156711383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 156811383Sbrandon.potter@amd.com } else { 156911383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 157011383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 157111383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 157211383Sbrandon.potter@amd.com // the host into the target address space. 157311392Sbrandon.potter@amd.com struct stat file_stat; 157411392Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 157511392Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 157611392Sbrandon.potter@amd.com 157711392Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 157811392Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 157911392Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 158011392Sbrandon.potter@amd.com // on the specified offset into the file. 158111392Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 158211392Sbrandon.potter@amd.com length); 158311392Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 158411392Sbrandon.potter@amd.com 158511392Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 158611392Sbrandon.potter@amd.com munmap(pmap, length); 158711856Sbrandon.potter@amd.com 158811856Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 158911856Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 159011392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 159111392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 159211392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 159311392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 159411392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 159511392Sbrandon.potter@amd.com if (interpreter) { 159611392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 159711392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 159811383Sbrandon.potter@amd.com 159911383Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 160011383Sbrandon.potter@amd.com 160111383Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 160211383Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 16031458SN/A auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 1604360SN/A ObjectFile *lib = createObjectFile(ffdp->getFileName()); 1605360SN/A 160611593Santhony.gutierrez@amd.com if (lib) { 160711593Santhony.gutierrez@amd.com lib->loadAllSymbols(debugSymbolTable, 160811851Sbrandon.potter@amd.com lib->textBase(), start); 160911593Santhony.gutierrez@amd.com } 161011593Santhony.gutierrez@amd.com } 161111593Santhony.gutierrez@amd.com } 161211593Santhony.gutierrez@amd.com 161311593Santhony.gutierrez@amd.com // Note that we do not zero out the remainder of the mapping. This 161411593Santhony.gutierrez@amd.com // is done by a real system, but it probably will not affect 161511593Santhony.gutierrez@amd.com // execution (hopefully). 161611856Sbrandon.potter@amd.com } 161711856Sbrandon.potter@amd.com 161811593Santhony.gutierrez@amd.com return start; 161911856Sbrandon.potter@amd.com} 162011593Santhony.gutierrez@amd.com 162111593Santhony.gutierrez@amd.comtemplate <class OS> 162211593Santhony.gutierrez@amd.comSyscallReturn 162311593Santhony.gutierrez@amd.compwrite64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 162411594Santhony.gutierrez@amd.com{ 162511593Santhony.gutierrez@amd.com int index = 0; 162611593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 162711593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 162811593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 162911385Sbrandon.potter@amd.com int offset = p->getSyscallArg(tc, index); 163011385Sbrandon.potter@amd.com 163111385Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 163211851Sbrandon.potter@amd.com if (!ffdp) 163311385Sbrandon.potter@amd.com return -EBADF; 163411385Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 163511385Sbrandon.potter@amd.com 163611385Sbrandon.potter@amd.com BufferArg bufArg(bufPtr, nbytes); 163711385Sbrandon.potter@amd.com bufArg.copyIn(tc->getMemProxy()); 163811385Sbrandon.potter@amd.com 163911385Sbrandon.potter@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 164011851Sbrandon.potter@amd.com 164111385Sbrandon.potter@amd.com return (bytes_written == -1) ? -errno : bytes_written; 164211385Sbrandon.potter@amd.com} 164311385Sbrandon.potter@amd.com 164411385Sbrandon.potter@amd.com/// Target mmap() handler. 1645378SN/Atemplate <class OS> 1646360SN/ASyscallReturn 16471450SN/AmmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 164811851Sbrandon.potter@amd.com{ 164911851Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 1650360SN/A} 16516701Sgblack@eecs.umich.edu 16526701Sgblack@eecs.umich.edu/// Target mmap2() handler. 16536701Sgblack@eecs.umich.edutemplate <class OS> 1654360SN/ASyscallReturn 1655360SN/Ammap2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 165611906SBrandon.Potter@amd.com{ 165711906SBrandon.Potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 165811906SBrandon.Potter@amd.com} 165911906SBrandon.Potter@amd.com 166011906SBrandon.Potter@amd.com/// Target getrlimit() handler. 166111906SBrandon.Potter@amd.comtemplate <class OS> 1662360SN/ASyscallReturn 166311906SBrandon.Potter@amd.comgetrlimitFunc(SyscallDesc *desc, int callnum, Process *process, 166411906SBrandon.Potter@amd.com ThreadContext *tc) 166511906SBrandon.Potter@amd.com{ 166611906SBrandon.Potter@amd.com int index = 0; 166711906SBrandon.Potter@amd.com unsigned resource = process->getSyscallArg(tc, index); 166811906SBrandon.Potter@amd.com TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 16695877Shsul@eecs.umich.edu 167011906SBrandon.Potter@amd.com switch (resource) { 167111906SBrandon.Potter@amd.com case OS::TGT_RLIMIT_STACK: 167211906SBrandon.Potter@amd.com // max stack size in bytes: make up a number (8MB for now) 167311906SBrandon.Potter@amd.com rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 1674360SN/A rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 1675360SN/A rlp->rlim_max = TheISA::htog(rlp->rlim_max); 16768706Sandreas.hansson@arm.com break; 16771458SN/A 1678360SN/A case OS::TGT_RLIMIT_DATA: 1679360SN/A // max data segment size in bytes: make up a number 168010796Sbrandon.potter@amd.com rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 168110796Sbrandon.potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 168210796Sbrandon.potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 168311851Sbrandon.potter@amd.com break; 168410796Sbrandon.potter@amd.com 168510796Sbrandon.potter@amd.com default: 168610796Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 168710796Sbrandon.potter@amd.com return -EINVAL; 168810796Sbrandon.potter@amd.com break; 168910796Sbrandon.potter@amd.com } 169010796Sbrandon.potter@amd.com 169110796Sbrandon.potter@amd.com rlp.copyOut(tc->getMemProxy()); 169210796Sbrandon.potter@amd.com return 0; 169310796Sbrandon.potter@amd.com} 169410796Sbrandon.potter@amd.com 169510796Sbrandon.potter@amd.com/// Target clock_gettime() function. 169610796Sbrandon.potter@amd.comtemplate <class OS> 169710796Sbrandon.potter@amd.comSyscallReturn 169810796Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 169911337SMichael.Lebeane@amd.com{ 170011337SMichael.Lebeane@amd.com int index = 1; 170111337SMichael.Lebeane@amd.com //int clk_id = p->getSyscallArg(tc, index); 170211851Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 170311337SMichael.Lebeane@amd.com 170411337SMichael.Lebeane@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 170511337SMichael.Lebeane@amd.com tp->tv_sec += seconds_since_epoch; 170611337SMichael.Lebeane@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 170711337SMichael.Lebeane@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 170811337SMichael.Lebeane@amd.com 170911337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 171011337SMichael.Lebeane@amd.com 171111337SMichael.Lebeane@amd.com return 0; 171211337SMichael.Lebeane@amd.com} 171311337SMichael.Lebeane@amd.com 171411337SMichael.Lebeane@amd.com/// Target clock_getres() function. 171511337SMichael.Lebeane@amd.comtemplate <class OS> 1716378SN/ASyscallReturn 1717360SN/Aclock_getresFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 17181450SN/A{ 171911851Sbrandon.potter@amd.com int index = 1; 172011851Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 1721360SN/A 17226701Sgblack@eecs.umich.edu // Set resolution at ns, which is what clock_gettime() returns 17236701Sgblack@eecs.umich.edu tp->tv_sec = 0; 1724360SN/A tp->tv_nsec = 1; 172510796Sbrandon.potter@amd.com 1726360SN/A tp.copyOut(tc->getMemProxy()); 17276109Ssanchezd@stanford.edu 17286109Ssanchezd@stanford.edu return 0; 1729360SN/A} 17308706Sandreas.hansson@arm.com 1731360SN/A/// Target gettimeofday() handler. 17321458SN/Atemplate <class OS> 1733360SN/ASyscallReturn 1734360SN/AgettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process, 1735360SN/A ThreadContext *tc) 17361999SN/A{ 17371999SN/A int index = 0; 17381999SN/A TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 173911851Sbrandon.potter@amd.com 17402680Sktlim@umich.edu getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 17411999SN/A tp->tv_sec += seconds_since_epoch; 17421999SN/A tp->tv_sec = TheISA::htog(tp->tv_sec); 17431999SN/A tp->tv_usec = TheISA::htog(tp->tv_usec); 17446701Sgblack@eecs.umich.edu 17458852Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 17466701Sgblack@eecs.umich.edu 17476701Sgblack@eecs.umich.edu return 0; 17486701Sgblack@eecs.umich.edu} 17491999SN/A 17506701Sgblack@eecs.umich.edu 17516701Sgblack@eecs.umich.edu/// Target utimes() handler. 17528706Sandreas.hansson@arm.comtemplate <class OS> 17531999SN/ASyscallReturn 17541999SN/AutimesFunc(SyscallDesc *desc, int callnum, Process *process, 175511906SBrandon.Potter@amd.com ThreadContext *tc) 17568737Skoansin.tan@gmail.com{ 17578737Skoansin.tan@gmail.com std::string path; 17581999SN/A 17593669Sbinkertn@umich.edu int index = 0; 17603669Sbinkertn@umich.edu if (!tc->getMemProxy().tryReadString(path, 17613669Sbinkertn@umich.edu process->getSyscallArg(tc, index))) { 17623669Sbinkertn@umich.edu return -EFAULT; 17631999SN/A } 17641999SN/A 17651999SN/A TypedBufferArg<typename OS::timeval [2]> 17661999SN/A tp(process->getSyscallArg(tc, index)); 17671999SN/A tp.copyIn(tc->getMemProxy()); 17681999SN/A 17691999SN/A struct timeval hostTimeval[2]; 177011886Sbrandon.potter@amd.com for (int i = 0; i < 2; ++i) { 177111886Sbrandon.potter@amd.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 177211886Sbrandon.potter@amd.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 177311886Sbrandon.potter@amd.com } 177411886Sbrandon.potter@amd.com 177511886Sbrandon.potter@amd.com // Adjust path for current working directory 177611886Sbrandon.potter@amd.com path = process->fullPath(path); 177711886Sbrandon.potter@amd.com 177811886Sbrandon.potter@amd.com int result = utimes(path.c_str(), hostTimeval); 177911886Sbrandon.potter@amd.com 178011886Sbrandon.potter@amd.com if (result < 0) 178111886Sbrandon.potter@amd.com return -errno; 178211886Sbrandon.potter@amd.com 178311886Sbrandon.potter@amd.com return 0; 178411886Sbrandon.potter@amd.com} 178511886Sbrandon.potter@amd.com 178611886Sbrandon.potter@amd.comtemplate <class OS> 178711886Sbrandon.potter@amd.comSyscallReturn 178811886Sbrandon.potter@amd.comexecveFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 178911886Sbrandon.potter@amd.com{ 179011886Sbrandon.potter@amd.com desc->setFlags(0); 179111886Sbrandon.potter@amd.com 179211886Sbrandon.potter@amd.com int index = 0; 179311886Sbrandon.potter@amd.com std::string path; 179411886Sbrandon.potter@amd.com SETranslatingPortProxy & mem_proxy = tc->getMemProxy(); 179511886Sbrandon.potter@amd.com if (!mem_proxy.tryReadString(path, p->getSyscallArg(tc, index))) 179611886Sbrandon.potter@amd.com return -EFAULT; 179711886Sbrandon.potter@amd.com 179811886Sbrandon.potter@amd.com if (access(path.c_str(), F_OK) == -1) 179911886Sbrandon.potter@amd.com return -EACCES; 180011886Sbrandon.potter@amd.com 180111886Sbrandon.potter@amd.com auto read_in = [](std::vector<std::string> & vect, 180211886Sbrandon.potter@amd.com SETranslatingPortProxy & mem_proxy, 180311886Sbrandon.potter@amd.com Addr mem_loc) 180411886Sbrandon.potter@amd.com { 180511886Sbrandon.potter@amd.com for (int inc = 0; ; inc++) { 180611886Sbrandon.potter@amd.com BufferArg b((mem_loc + sizeof(Addr) * inc), sizeof(Addr)); 180711886Sbrandon.potter@amd.com b.copyIn(mem_proxy); 180811886Sbrandon.potter@amd.com 180911886Sbrandon.potter@amd.com if (!*(Addr*)b.bufferPtr()) 181011886Sbrandon.potter@amd.com break; 181111886Sbrandon.potter@amd.com 181211886Sbrandon.potter@amd.com vect.push_back(std::string()); 181311886Sbrandon.potter@amd.com mem_proxy.tryReadString(vect[inc], *(Addr*)b.bufferPtr()); 181411886Sbrandon.potter@amd.com } 181511886Sbrandon.potter@amd.com }; 181611886Sbrandon.potter@amd.com 181711886Sbrandon.potter@amd.com /** 181811886Sbrandon.potter@amd.com * Note that ProcessParams is generated by swig and there are no other 181911886Sbrandon.potter@amd.com * examples of how to create anything but this default constructor. The 182011886Sbrandon.potter@amd.com * fields are manually initialized instead of passing parameters to the 182111886Sbrandon.potter@amd.com * constructor. 182211886Sbrandon.potter@amd.com */ 182311886Sbrandon.potter@amd.com ProcessParams *pp = new ProcessParams(); 182411886Sbrandon.potter@amd.com pp->executable = path; 182511886Sbrandon.potter@amd.com Addr argv_mem_loc = p->getSyscallArg(tc, index); 182611886Sbrandon.potter@amd.com read_in(pp->cmd, mem_proxy, argv_mem_loc); 182711886Sbrandon.potter@amd.com Addr envp_mem_loc = p->getSyscallArg(tc, index); 182811886Sbrandon.potter@amd.com read_in(pp->env, mem_proxy, envp_mem_loc); 182911886Sbrandon.potter@amd.com pp->uid = p->uid(); 183011886Sbrandon.potter@amd.com pp->egid = p->egid(); 183111886Sbrandon.potter@amd.com pp->euid = p->euid(); 183211886Sbrandon.potter@amd.com pp->gid = p->gid(); 183311886Sbrandon.potter@amd.com pp->ppid = p->ppid(); 183411886Sbrandon.potter@amd.com pp->pid = p->pid(); 183511886Sbrandon.potter@amd.com pp->input.assign("cin"); 183611886Sbrandon.potter@amd.com pp->output.assign("cout"); 183711886Sbrandon.potter@amd.com pp->errout.assign("cerr"); 183811886Sbrandon.potter@amd.com pp->cwd.assign(p->getcwd()); 183911886Sbrandon.potter@amd.com pp->system = p->system; 184011886Sbrandon.potter@amd.com /** 184111886Sbrandon.potter@amd.com * Prevent process object creation with identical PIDs (which will trip 184211886Sbrandon.potter@amd.com * a fatal check in Process constructor). The execve call is supposed to 184311886Sbrandon.potter@amd.com * take over the currently executing process' identity but replace 184411886Sbrandon.potter@amd.com * whatever it is doing with a new process image. Instead of hijacking 184511886Sbrandon.potter@amd.com * the process object in the simulator, we create a new process object 184611886Sbrandon.potter@amd.com * and bind to the previous process' thread below (hijacking the thread). 184711886Sbrandon.potter@amd.com */ 184811886Sbrandon.potter@amd.com p->system->PIDs.erase(p->pid()); 184911886Sbrandon.potter@amd.com Process *new_p = pp->create(); 185011886Sbrandon.potter@amd.com delete pp; 185111886Sbrandon.potter@amd.com 185211886Sbrandon.potter@amd.com /** 185311886Sbrandon.potter@amd.com * Work through the file descriptor array and close any files marked 185411886Sbrandon.potter@amd.com * close-on-exec. 185511886Sbrandon.potter@amd.com */ 185611886Sbrandon.potter@amd.com new_p->fds = p->fds; 185711886Sbrandon.potter@amd.com for (int i = 0; i < new_p->fds->getSize(); i++) { 185811886Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*new_p->fds)[i]; 185911886Sbrandon.potter@amd.com if (fdep && fdep->getCOE()) 186011886Sbrandon.potter@amd.com new_p->fds->closeFDEntry(i); 186111886Sbrandon.potter@amd.com } 186211886Sbrandon.potter@amd.com 1863378SN/A *new_p->sigchld = true; 1864360SN/A 18651450SN/A delete p; 186611851Sbrandon.potter@amd.com tc->clearArchRegs(); 18672680Sktlim@umich.edu tc->setProcessPtr(new_p); 1868360SN/A new_p->assignThreadContext(tc->contextId()); 18696701Sgblack@eecs.umich.edu new_p->initState(); 18706701Sgblack@eecs.umich.edu tc->activate(); 18716701Sgblack@eecs.umich.edu TheISA::PCState pcState = tc->pcState(); 1872360SN/A tc->setNPC(pcState.instAddr()); 18733670Sbinkertn@umich.edu 18743670Sbinkertn@umich.edu desc->setFlags(SyscallDesc::SuppressReturnValue); 1875360SN/A return 0; 1876360SN/A} 1877360SN/A 1878360SN/A/// Target getrusage() function. 1879360SN/Atemplate <class OS> 1880360SN/ASyscallReturn 1881360SN/AgetrusageFunc(SyscallDesc *desc, int callnum, Process *process, 1882360SN/A ThreadContext *tc) 1883360SN/A{ 1884360SN/A int index = 0; 1885360SN/A int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 1886360SN/A TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1887360SN/A 1888360SN/A rup->ru_utime.tv_sec = 0; 1889360SN/A rup->ru_utime.tv_usec = 0; 1890360SN/A rup->ru_stime.tv_sec = 0; 1891360SN/A rup->ru_stime.tv_usec = 0; 18923670Sbinkertn@umich.edu rup->ru_maxrss = 0; 18933670Sbinkertn@umich.edu rup->ru_ixrss = 0; 189410796Sbrandon.potter@amd.com rup->ru_idrss = 0; 18958737Skoansin.tan@gmail.com rup->ru_isrss = 0; 18968737Skoansin.tan@gmail.com rup->ru_minflt = 0; 18973670Sbinkertn@umich.edu rup->ru_majflt = 0; 18983670Sbinkertn@umich.edu rup->ru_nswap = 0; 18993670Sbinkertn@umich.edu rup->ru_inblock = 0; 19003670Sbinkertn@umich.edu rup->ru_oublock = 0; 19013670Sbinkertn@umich.edu rup->ru_msgsnd = 0; 19023670Sbinkertn@umich.edu rup->ru_msgrcv = 0; 19033670Sbinkertn@umich.edu rup->ru_nsignals = 0; 19043670Sbinkertn@umich.edu rup->ru_nvcsw = 0; 19053670Sbinkertn@umich.edu rup->ru_nivcsw = 0; 19063670Sbinkertn@umich.edu 19073670Sbinkertn@umich.edu switch (who) { 19083670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 19093670Sbinkertn@umich.edu getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 19108706Sandreas.hansson@arm.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 1911360SN/A rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 19121458SN/A break; 1913360SN/A 1914360SN/A case OS::TGT_RUSAGE_CHILDREN: 19156683Stjones1@inf.ed.ac.uk // do nothing. We have no child processes, so they take no time. 19166683Stjones1@inf.ed.ac.uk break; 19176683Stjones1@inf.ed.ac.uk 191811851Sbrandon.potter@amd.com default: 191911851Sbrandon.potter@amd.com // don't really handle THREAD or CHILDREN, but just warn and 19206683Stjones1@inf.ed.ac.uk // plow ahead 19216701Sgblack@eecs.umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 19226701Sgblack@eecs.umich.edu who); 19236683Stjones1@inf.ed.ac.uk } 19246683Stjones1@inf.ed.ac.uk 19257823Ssteve.reinhardt@amd.com rup.copyOut(tc->getMemProxy()); 19266683Stjones1@inf.ed.ac.uk 19276683Stjones1@inf.ed.ac.uk return 0; 19286683Stjones1@inf.ed.ac.uk} 19296683Stjones1@inf.ed.ac.uk 19306683Stjones1@inf.ed.ac.uk/// Target times() function. 19316683Stjones1@inf.ed.ac.uktemplate <class OS> 19328737Skoansin.tan@gmail.comSyscallReturn 19336683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, Process *process, 19346683Stjones1@inf.ed.ac.uk ThreadContext *tc) 19358706Sandreas.hansson@arm.com{ 19366683Stjones1@inf.ed.ac.uk int index = 0; 19376683Stjones1@inf.ed.ac.uk TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 19386683Stjones1@inf.ed.ac.uk 19396683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 19402553SN/A int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 19416684Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 19426684Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 19436684Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 194411851Sbrandon.potter@amd.com bufp->tms_cstime = 0; 19456684Stjones1@inf.ed.ac.uk 19466684Stjones1@inf.ed.ac.uk // Convert to host endianness 194710796Sbrandon.potter@amd.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 19486684Stjones1@inf.ed.ac.uk 19496684Stjones1@inf.ed.ac.uk // Write back 19506701Sgblack@eecs.umich.edu bufp.copyOut(tc->getMemProxy()); 19516701Sgblack@eecs.umich.edu 195211321Ssteve.reinhardt@amd.com // Return clock ticks since system boot 19536684Stjones1@inf.ed.ac.uk return clocks; 19548737Skoansin.tan@gmail.com} 19558852Sandreas.hansson@arm.com 19568852Sandreas.hansson@arm.com/// Target time() function. 19576684Stjones1@inf.ed.ac.uktemplate <class OS> 19586684Stjones1@inf.ed.ac.ukSyscallReturn 19596684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 19602553SN/A{ 196111910SBrandon.Potter@amd.com typename OS::time_t sec, usec; 196211910SBrandon.Potter@amd.com getElapsedTimeMicro(sec, usec); 196311910SBrandon.Potter@amd.com sec += seconds_since_epoch; 196411910SBrandon.Potter@amd.com 196511910SBrandon.Potter@amd.com int index = 0; 196611910SBrandon.Potter@amd.com Addr taddr = (Addr)process->getSyscallArg(tc, index); 196711910SBrandon.Potter@amd.com if (taddr != 0) { 196811910SBrandon.Potter@amd.com typename OS::time_t t = sec; 196911910SBrandon.Potter@amd.com t = TheISA::htog(t); 197011910SBrandon.Potter@amd.com SETranslatingPortProxy &p = tc->getMemProxy(); 197111910SBrandon.Potter@amd.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 197211910SBrandon.Potter@amd.com } 197311910SBrandon.Potter@amd.com return sec; 197411910SBrandon.Potter@amd.com} 197511910SBrandon.Potter@amd.com 197611910SBrandon.Potter@amd.com 197711910SBrandon.Potter@amd.com#endif // __SIM_SYSCALL_EMUL_HH__ 197811910SBrandon.Potter@amd.com