syscall_emul.hh revision 11910
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 482764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 499202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 509202Spalle@lyckegaard.dk defined(__NetBSD__)) 512064SN/A 5211799Sbrandon.potter@amd.com#define NO_STATFS (defined(__APPLE__) || defined(__OpenBSD__) || \ 5311799Sbrandon.potter@amd.com defined(__FreeBSD__) || defined(__NetBSD__)) 5411799Sbrandon.potter@amd.com 5511799Sbrandon.potter@amd.com#define NO_FALLOCATE (defined(__APPLE__) || defined(__OpenBSD__) || \ 5611799Sbrandon.potter@amd.com defined(__FreeBSD__) || defined(__NetBSD__)) 5711799Sbrandon.potter@amd.com 58360SN/A/// 59360SN/A/// @file syscall_emul.hh 60360SN/A/// 61360SN/A/// This file defines objects used to emulate syscalls from the target 62360SN/A/// application on the host machine. 63360SN/A 641809SN/A#ifdef __CYGWIN32__ 6511800Sbrandon.potter@amd.com#include <sys/fcntl.h> 6611392Sbrandon.potter@amd.com 671809SN/A#endif 6811392Sbrandon.potter@amd.com#include <fcntl.h> 6911383Sbrandon.potter@amd.com#include <sys/mman.h> 703113Sgblack@eecs.umich.edu#include <sys/stat.h> 7111799Sbrandon.potter@amd.com#if (NO_STATFS == 0) 7211759Sbrandon.potter@amd.com#include <sys/statfs.h> 7311812Sbaz21@cam.ac.uk#else 7411812Sbaz21@cam.ac.uk#include <sys/mount.h> 7511799Sbrandon.potter@amd.com#endif 768229Snate@binkert.org#include <sys/time.h> 778229Snate@binkert.org#include <sys/uio.h> 7811594Santhony.gutierrez@amd.com#include <unistd.h> 797075Snate@binkert.org 808229Snate@binkert.org#include <cerrno> 8111856Sbrandon.potter@amd.com#include <memory> 827075Snate@binkert.org#include <string> 83360SN/A 8411886Sbrandon.potter@amd.com#include "arch/utility.hh" 8511800Sbrandon.potter@amd.com#include "base/intmath.hh" 8611392Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 872462SN/A#include "base/misc.hh" 881354SN/A#include "base/trace.hh" 896216Snate@binkert.org#include "base/types.hh" 906658Snate@binkert.org#include "config/the_isa.hh" 912474SN/A#include "cpu/base.hh" 922680Sktlim@umich.edu#include "cpu/thread_context.hh" 938229Snate@binkert.org#include "mem/page_table.hh" 9411886Sbrandon.potter@amd.com#include "params/Process.hh" 9510496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 968229Snate@binkert.org#include "sim/process.hh" 9711794Sbrandon.potter@amd.com#include "sim/syscall_debug_macros.hh" 9811886Sbrandon.potter@amd.com#include "sim/syscall_desc.hh" 9910497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 10011794Sbrandon.potter@amd.com#include "sim/syscall_return.hh" 101360SN/A 102360SN/A////////////////////////////////////////////////////////////////////// 103360SN/A// 104360SN/A// The following emulation functions are generic enough that they 105360SN/A// don't need to be recompiled for different emulated OS's. They are 106360SN/A// defined in sim/syscall_emul.cc. 107360SN/A// 108360SN/A////////////////////////////////////////////////////////////////////// 109360SN/A 110360SN/A 111378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1121706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 11311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 114378SN/A 115378SN/A/// Handler for unimplemented syscalls that we never intend to 116378SN/A/// implement (signal handling, etc.) and should not affect the correct 117378SN/A/// behavior of the program. Print a warning only if the appropriate 118378SN/A/// trace flag is enabled. Return success to the target program. 1191706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 12011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 121360SN/A 12211760Sbrandon.potter@amd.com// Target fallocateFunc() handler. 12311760Sbrandon.potter@amd.comSyscallReturn fallocateFunc(SyscallDesc *desc, int num, 12411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 12511760Sbrandon.potter@amd.com 1266109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1271706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 12811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 129378SN/A 1306109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1316109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 13211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1336109Ssanchezd@stanford.edu 13411886Sbrandon.potter@amd.com/// Target set_tid_address() handler. 13511886Sbrandon.potter@amd.comSyscallReturn setTidAddressFunc(SyscallDesc *desc, int num, 13611886Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 13711886Sbrandon.potter@amd.com 138378SN/A/// Target getpagesize() handler. 1391706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 14011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 141378SN/A 1425748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1435748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 14411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 145378SN/A 146378SN/A/// Target close() handler. 1471706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 14811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 149378SN/A 15011886Sbrandon.potter@amd.com// Target read() handler. 1511706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 15211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 153378SN/A 154378SN/A/// Target write() handler. 1551706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 15611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 157378SN/A 158378SN/A/// Target lseek() handler. 1591706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 16011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 161378SN/A 1624118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1634118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 16411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1654118Sgblack@eecs.umich.edu 166378SN/A/// Target munmap() handler. 1671706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 16811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 169378SN/A 170378SN/A/// Target gethostname() handler. 1711706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 17211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 173360SN/A 1745513SMichael.Adler@intel.com/// Target getcwd() handler. 1755513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 17611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1775513SMichael.Adler@intel.com 17810203SAli.Saidi@ARM.com/// Target readlink() handler. 17910203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 18011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 18110203SAli.Saidi@ARM.com int index = 0); 1825513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 18311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1845513SMichael.Adler@intel.com 185511SN/A/// Target unlink() handler. 18610633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 18711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 18810633Smichaelupton@gmail.com int index); 1891706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 19011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 191511SN/A 1925513SMichael.Adler@intel.com/// Target mkdir() handler. 1935513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 19411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1955513SMichael.Adler@intel.com 196511SN/A/// Target rename() handler. 1971706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 19811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1991706SN/A 2001706SN/A 2011706SN/A/// Target truncate() handler. 2021706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 20311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2041706SN/A 2051706SN/A 2061706SN/A/// Target ftruncate() handler. 2071706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 20811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2091706SN/A 210511SN/A 2116703Svince@csl.cornell.edu/// Target truncate64() handler. 2126703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 21311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2146703Svince@csl.cornell.edu 2156685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2166685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 21711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2186685Stjones1@inf.ed.ac.uk 2196685Stjones1@inf.ed.ac.uk 2205513SMichael.Adler@intel.com/// Target umask() handler. 2215513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 22211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2235513SMichael.Adler@intel.com 22411885Sbrandon.potter@amd.com/// Target gettid() handler. 22511885Sbrandon.potter@amd.comSyscallReturn gettidFunc(SyscallDesc *desc, int num, 22611885Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2275513SMichael.Adler@intel.com 2281999SN/A/// Target chown() handler. 2291999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 23011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2311999SN/A 23211885Sbrandon.potter@amd.com/// Target setpgid() handler. 23311885Sbrandon.potter@amd.comSyscallReturn setpgidFunc(SyscallDesc *desc, int num, 23411885Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2351999SN/A 2361999SN/A/// Target fchown() handler. 2371999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 23811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2391999SN/A 2403079Sstever@eecs.umich.edu/// Target dup() handler. 2413079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 24211851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2433079Sstever@eecs.umich.edu 24411908SBrandon.Potter@amd.com/// Target dup2() handler. 24511908SBrandon.Potter@amd.comSyscallReturn dup2Func(SyscallDesc *desc, int num, 24611908SBrandon.Potter@amd.com Process *process, ThreadContext *tc); 24711908SBrandon.Potter@amd.com 24811875Sbrandon.potter@amd.com/// Target fcntl() handler. 2492093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 25011851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2512093SN/A 2522687Sksewell@umich.edu/// Target fcntl64() handler. 2532687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 25411851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2552687Sksewell@umich.edu 2562238SN/A/// Target setuid() handler. 2572238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 25811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2592238SN/A 26011908SBrandon.Potter@amd.com/// Target pipe() handler. 26111908SBrandon.Potter@amd.comSyscallReturn pipeFunc(SyscallDesc *desc, int num, 26211908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 26311908SBrandon.Potter@amd.com 26411908SBrandon.Potter@amd.com/// Internal pipe() handler. 26511908SBrandon.Potter@amd.comSyscallReturn pipeImpl(SyscallDesc *desc, int num, Process *p, 26611908SBrandon.Potter@amd.com ThreadContext *tc, bool pseudoPipe); 26711908SBrandon.Potter@amd.com 2682238SN/A/// Target getpid() handler. 2692238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 27011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2712238SN/A 2722238SN/A/// Target getuid() handler. 2732238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 27411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2752238SN/A 2762238SN/A/// Target getgid() handler. 2772238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 27811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2792238SN/A 2802238SN/A/// Target getppid() handler. 2812238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 28211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2832238SN/A 2842238SN/A/// Target geteuid() handler. 2852238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 28611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2872238SN/A 2882238SN/A/// Target getegid() handler. 2892238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 29011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2912238SN/A 2929455Smitch.hayenga+gem5@gmail.com/// Target access() handler 2939455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 29411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 29510203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 29611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 29711851Sbrandon.potter@amd.com int index); 2989455Smitch.hayenga+gem5@gmail.com 2999112Smarc.orr@gmail.com/// Futex system call 30011906SBrandon.Potter@amd.com/// Implemented by Daniel Sanchez 30111906SBrandon.Potter@amd.com/// Used by printf's in multi-threaded apps 3029112Smarc.orr@gmail.comtemplate <class OS> 3039112Smarc.orr@gmail.comSyscallReturn 30411851Sbrandon.potter@amd.comfutexFunc(SyscallDesc *desc, int callnum, Process *process, 3059112Smarc.orr@gmail.com ThreadContext *tc) 3069112Smarc.orr@gmail.com{ 3079112Smarc.orr@gmail.com int index_uaddr = 0; 3089112Smarc.orr@gmail.com int index_op = 1; 3099112Smarc.orr@gmail.com int index_val = 2; 3109112Smarc.orr@gmail.com int index_timeout = 3; 3119112Smarc.orr@gmail.com 3129112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3139112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3149112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3159112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3169112Smarc.orr@gmail.com 3179112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3189112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3199112Smarc.orr@gmail.com 32011886Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "futex: Address=%llx, op=%d, val=%d\n", 3219112Smarc.orr@gmail.com uaddr, op, val); 3229112Smarc.orr@gmail.com 3239238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3249112Smarc.orr@gmail.com 3259112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3269112Smarc.orr@gmail.com if (timeout != 0) { 32711886Sbrandon.potter@amd.com warn("futex: FUTEX_WAIT with non-null timeout unimplemented;" 3289112Smarc.orr@gmail.com "we'll wait indefinitely"); 3299112Smarc.orr@gmail.com } 3309112Smarc.orr@gmail.com 3319112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3329112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3339112Smarc.orr@gmail.com int mem_val = *((int *)buf); 33411367Sandreas.hansson@arm.com delete[] buf; 3359112Smarc.orr@gmail.com 33611321Ssteve.reinhardt@amd.com if (val != mem_val) { 33711886Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "futex: FUTEX_WAKE, read: %d, " 3389112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3399112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3409112Smarc.orr@gmail.com } 3419112Smarc.orr@gmail.com 3429112Smarc.orr@gmail.com // Queue the thread context 3439112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3449112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3459112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3469112Smarc.orr@gmail.com } else { 3479112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3489112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3499112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3509112Smarc.orr@gmail.com } 3519112Smarc.orr@gmail.com tcWaitList->push_back(tc); 35211886Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "futex: FUTEX_WAIT, suspending calling thread " 35311886Sbrandon.potter@amd.com "context on address 0x%lx\n", uaddr); 3549112Smarc.orr@gmail.com tc->suspend(); 3559112Smarc.orr@gmail.com return 0; 3569112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3579112Smarc.orr@gmail.com int wokenUp = 0; 3589112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3599112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3609112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3619112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3629112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3639112Smarc.orr@gmail.com tcWaitList->pop_front(); 3649112Smarc.orr@gmail.com wokenUp++; 3659112Smarc.orr@gmail.com } 36611321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3679112Smarc.orr@gmail.com futex_map.erase(uaddr); 3689112Smarc.orr@gmail.com delete tcWaitList; 3699112Smarc.orr@gmail.com } 3709112Smarc.orr@gmail.com } 37111886Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "futex: FUTEX_WAKE, activated %d waiting " 37211886Sbrandon.potter@amd.com "thread context on address 0x%lx\n", 37311886Sbrandon.potter@amd.com wokenUp, uaddr); 3749112Smarc.orr@gmail.com return wokenUp; 3759112Smarc.orr@gmail.com } else { 37611886Sbrandon.potter@amd.com warn("futex: op %d is not implemented, just returning...", op); 3779112Smarc.orr@gmail.com return 0; 3789112Smarc.orr@gmail.com } 3799112Smarc.orr@gmail.com 3809112Smarc.orr@gmail.com} 3819112Smarc.orr@gmail.com 3822238SN/A 3832238SN/A/// Pseudo Funcs - These functions use a different return convension, 3842238SN/A/// returning a second value in a register other than the normal return register 3852238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 38611851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 3872238SN/A 3882238SN/A/// Target getpidPseudo() handler. 3892238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 39011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3912238SN/A 3922238SN/A/// Target getuidPseudo() handler. 3932238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 39411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3952238SN/A 3962238SN/A/// Target getgidPseudo() handler. 3972238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 39811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3992238SN/A 4002238SN/A 4011354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4021354SN/Aconst 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; 4051354SN/A 4061354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4071354SN/A/// by my reckoning. We want to keep this a constant (not use the 4081354SN/A/// real-world time) to keep simulations repeatable. 4091354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4101354SN/A 4111354SN/A/// Helper function to convert current elapsed time to seconds and 4121354SN/A/// microseconds. 4131354SN/Atemplate <class T1, class T2> 4141354SN/Avoid 41510796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 4161354SN/A{ 41710796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 4181354SN/A sec = elapsed_usecs / one_million; 4191354SN/A usec = elapsed_usecs % one_million; 4201354SN/A} 4211354SN/A 42210796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 42310796Sbrandon.potter@amd.com/// nanoseconds. 42410796Sbrandon.potter@amd.comtemplate <class T1, class T2> 42510796Sbrandon.potter@amd.comvoid 42610796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 42710796Sbrandon.potter@amd.com{ 42810796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 42910796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 43010796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 43110796Sbrandon.potter@amd.com} 43210796Sbrandon.potter@amd.com 433360SN/A////////////////////////////////////////////////////////////////////// 434360SN/A// 435360SN/A// The following emulation functions are generic, but need to be 436360SN/A// templated to account for differences in types, constants, etc. 437360SN/A// 438360SN/A////////////////////////////////////////////////////////////////////// 439360SN/A 44011759Sbrandon.potter@amd.com typedef struct statfs hst_statfs; 4413113Sgblack@eecs.umich.edu#if NO_STAT64 4423113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4433113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4443113Sgblack@eecs.umich.edu#else 4453113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4463113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4473113Sgblack@eecs.umich.edu#endif 4483113Sgblack@eecs.umich.edu 4493113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4503113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4513113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4523113Sgblack@eecs.umich.edu 4533113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4543113Sgblack@eecs.umich.edustatic void 4553113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4563113Sgblack@eecs.umich.edu{ 4574189Sgblack@eecs.umich.edu using namespace TheISA; 4584189Sgblack@eecs.umich.edu 4593113Sgblack@eecs.umich.edu if (fakeTTY) 4603113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4613113Sgblack@eecs.umich.edu else 4623113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4638737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4643113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4658737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4663277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4675515SMichael.Adler@intel.com if (fakeTTY) { 4685515SMichael.Adler@intel.com // Claim to be a character device 4695515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4705515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4715515SMichael.Adler@intel.com } 4728737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4733277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4748737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4753277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4768737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4773277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4788737Skoansin.tan@gmail.com 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; 4838737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4843113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4858737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4863114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4878737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4883114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4898737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4903114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4918737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 49211906SBrandon.Potter@amd.com // Force the block size to be 8KB. This helps to ensure buffered io works 4934061Sgblack@eecs.umich.edu // consistently across different hosts. 4944061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4958737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4963113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4978737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4983113Sgblack@eecs.umich.edu} 4993113Sgblack@eecs.umich.edu 5003113Sgblack@eecs.umich.edu// Same for stat64 5013113Sgblack@eecs.umich.edu 5023113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5033113Sgblack@eecs.umich.edustatic void 5043113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5053113Sgblack@eecs.umich.edu{ 5064189Sgblack@eecs.umich.edu using namespace TheISA; 5074189Sgblack@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; 5118737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5123113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5138737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5143113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5158737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5163113Sgblack@eecs.umich.edu#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; 5203113Sgblack@eecs.umich.edu#endif 5213113Sgblack@eecs.umich.edu} 5223113Sgblack@eecs.umich.edu 52311906SBrandon.Potter@amd.com// Here are a couple of convenience functions 5243113Sgblack@eecs.umich.edutemplate<class OS> 5253113Sgblack@eecs.umich.edustatic void 5268852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 52711906SBrandon.Potter@amd.com hst_stat *host, bool fakeTTY = false) 5283113Sgblack@eecs.umich.edu{ 5293113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5303113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5313113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5323113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5333113Sgblack@eecs.umich.edu} 5343113Sgblack@eecs.umich.edu 5353113Sgblack@eecs.umich.edutemplate<class OS> 5363113Sgblack@eecs.umich.edustatic void 5378852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 53811906SBrandon.Potter@amd.com hst_stat64 *host, bool fakeTTY = false) 5393113Sgblack@eecs.umich.edu{ 5403113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5413113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5426686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5433113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5443113Sgblack@eecs.umich.edu} 5453113Sgblack@eecs.umich.edu 54611759Sbrandon.potter@amd.comtemplate <class OS> 54711759Sbrandon.potter@amd.comstatic void 54811759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 54911759Sbrandon.potter@amd.com hst_statfs *host) 55011759Sbrandon.potter@amd.com{ 55111759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 55211759Sbrandon.potter@amd.com 55311812Sbaz21@cam.ac.uk tgt->f_type = TheISA::htog(host->f_type); 55411812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 55511812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_iosize); 55611759Sbrandon.potter@amd.com#else 55711812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_bsize); 55811759Sbrandon.potter@amd.com#endif 55911759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 56011759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 56111759Sbrandon.potter@amd.com 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)); 56511812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 56611812Sbaz21@cam.ac.uk tgt->f_namelen = TheISA::htog(host->f_namemax); 56711812Sbaz21@cam.ac.uk tgt->f_frsize = TheISA::htog(host->f_bsize); 56811812Sbaz21@cam.ac.uk#elif defined(__APPLE__) 56911812Sbaz21@cam.ac.uk tgt->f_namelen = 0; 57011812Sbaz21@cam.ac.uk tgt->f_frsize = 0; 57111812Sbaz21@cam.ac.uk#else 57211759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 57311759Sbrandon.potter@amd.com tgt->f_frsize = TheISA::htog(host->f_frsize); 57411812Sbaz21@cam.ac.uk#endif 57511812Sbaz21@cam.ac.uk#if defined(__linux__) 57611759Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 57711812Sbaz21@cam.ac.uk#else 57811812Sbaz21@cam.ac.uk /* 57911812Sbaz21@cam.ac.uk * The fields are different sizes per OS. Don't bother with 58011812Sbaz21@cam.ac.uk * f_spare or f_reserved on non-Linux for now. 58111812Sbaz21@cam.ac.uk */ 58211812Sbaz21@cam.ac.uk memset(&tgt->f_spare, 0, sizeof(tgt->f_spare)); 58311812Sbaz21@cam.ac.uk#endif 58411759Sbrandon.potter@amd.com 58511759Sbrandon.potter@amd.com tgt.copyOut(mem); 58611759Sbrandon.potter@amd.com} 58711759Sbrandon.potter@amd.com 588378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 589378SN/A/// only to find out if their stdout is a tty, to determine whether to 5909141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5919141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 592360SN/Atemplate <class OS> 5931450SN/ASyscallReturn 59411856Sbrandon.potter@amd.comioctlFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 595360SN/A{ 5966701Sgblack@eecs.umich.edu int index = 0; 59711856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 59811856Sbrandon.potter@amd.com unsigned req = p->getSyscallArg(tc, index); 599360SN/A 60010930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 601360SN/A 60211856Sbrandon.potter@amd.com if (OS::isTtyReq(req)) 60311856Sbrandon.potter@amd.com return -ENOTTY; 60410496Ssteve.reinhardt@amd.com 60511856Sbrandon.potter@amd.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>((*p->fds)[tgt_fd]); 60611856Sbrandon.potter@amd.com if (!dfdp) 6071458SN/A return -EBADF; 608360SN/A 60911856Sbrandon.potter@amd.com /** 61011856Sbrandon.potter@amd.com * If the driver is valid, issue the ioctl through it. Otherwise, 61111856Sbrandon.potter@amd.com * there's an implicit assumption that the device is a TTY type and we 61211856Sbrandon.potter@amd.com * return that we do not have a valid TTY. 61311856Sbrandon.potter@amd.com */ 61411856Sbrandon.potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 61511856Sbrandon.potter@amd.com if (emul_driver) 61611856Sbrandon.potter@amd.com return emul_driver->ioctl(p, tc, req); 61710496Ssteve.reinhardt@amd.com 61811856Sbrandon.potter@amd.com /** 61911856Sbrandon.potter@amd.com * For lack of a better return code, return ENOTTY. Ideally, we should 62011856Sbrandon.potter@amd.com * return something better here, but at least we issue the warning. 62111856Sbrandon.potter@amd.com */ 62211856Sbrandon.potter@amd.com warn("Unsupported ioctl call (return ENOTTY): ioctl(%d, 0x%x, ...) @ \n", 62310930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 6249141Smarc.orr@gmail.com return -ENOTTY; 625360SN/A} 626360SN/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) 631360SN/A{ 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. 63811907SBrandon.Potter@amd.com */ 63911907SBrandon.Potter@amd.com if (isopenat) 64011907SBrandon.Potter@amd.com tgt_dirfd = p->getSyscallArg(tc, index); 64111907SBrandon.Potter@amd.com 64211907SBrandon.Potter@amd.com /** 64311907SBrandon.Potter@amd.com * 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 */ 646360SN/A std::string path; 64711907SBrandon.Potter@amd.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 6481458SN/A return -EFAULT; 649360SN/A 65011907SBrandon.Potter@amd.com#ifdef __CYGWIN32__ 65111907SBrandon.Potter@amd.com int host_flags = O_BINARY; 65211907SBrandon.Potter@amd.com#else 65311907SBrandon.Potter@amd.com 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); 660360SN/A 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; 664360SN/A } 665360SN/A } 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 } 670360SN/A#ifdef __CYGWIN32__ 67111907SBrandon.Potter@amd.com host_flags |= O_BINARY; 672360SN/A#endif 673360SN/A 67411907SBrandon.Potter@amd.com int mode = p->getSyscallArg(tc, index); 6753669Sbinkertn@umich.edu 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 68211907SBrandon.Potter@amd.com * been called. If the path option, which was passed in as a parameter, 68311907SBrandon.Potter@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); 69011907SBrandon.Potter@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; 69511907SBrandon.Potter@amd.com path.insert(0, ffdp->getFileName()); 69611907SBrandon.Potter@amd.com } 6971706SN/A 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 */ 70410496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 70510496Ssteve.reinhardt@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); 71210496Ssteve.reinhardt@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 */ 71710496Ssteve.reinhardt@amd.com } 71810496Ssteve.reinhardt@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. 72211907SBrandon.Potter@amd.com * 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) { 73611907SBrandon.Potter@amd.com sim_fd = open(path.c_str(), host_flags, mode); 73711907SBrandon.Potter@amd.com } 73811907SBrandon.Potter@amd.com if (sim_fd == -1) { 73911907SBrandon.Potter@amd.com int local = -errno; 74011907SBrandon.Potter@amd.com DPRINTF_SYSCALL(Verbose, "open%s: failed -> path:%s\n", 74111907SBrandon.Potter@amd.com isopenat ? "at" : "", path.c_str()); 74211907SBrandon.Potter@amd.com return local; 74311907SBrandon.Potter@amd.com } 744360SN/A 74511907SBrandon.Potter@amd.com /** 74611907SBrandon.Potter@amd.com * The file was opened successfully and needs to be recorded in the 74711907SBrandon.Potter@amd.com * process' file descriptor array so that it can be retrieved later. 74811907SBrandon.Potter@amd.com * The target file descriptor that is chosen will be the lowest unused 74911907SBrandon.Potter@amd.com * file descriptor. 75011907SBrandon.Potter@amd.com * Return the indirect target file descriptor back to the simulated 75111907SBrandon.Potter@amd.com * process to act as a handle for the opened file. 75211907SBrandon.Potter@amd.com */ 75311907SBrandon.Potter@amd.com auto ffdp = std::make_shared<FileFDEntry>(sim_fd, host_flags, path, 0); 75411907SBrandon.Potter@amd.com int tgt_fd = p->fds->allocFD(ffdp); 75511907SBrandon.Potter@amd.com DPRINTF_SYSCALL(Verbose, "open%s: sim_fd[%d], target_fd[%d] -> path:%s\n", 75611907SBrandon.Potter@amd.com isopenat ? "at" : "", sim_fd, tgt_fd, path.c_str()); 75711907SBrandon.Potter@amd.com return tgt_fd; 758360SN/A} 759360SN/A 76010027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 76110027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 76210027SChris.Adeniyi-Jones@arm.comSyscallReturn 76311851Sbrandon.potter@amd.comopenFunc(SyscallDesc *desc, int callnum, Process *process, 76410027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 76510027SChris.Adeniyi-Jones@arm.com{ 76611907SBrandon.Potter@amd.com return openImpl<OS>(desc, callnum, process, tc, false); 76710027SChris.Adeniyi-Jones@arm.com} 76810027SChris.Adeniyi-Jones@arm.com 76910027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 77010027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 77110027SChris.Adeniyi-Jones@arm.comSyscallReturn 77211851Sbrandon.potter@amd.comopenatFunc(SyscallDesc *desc, int callnum, Process *process, 77311851Sbrandon.potter@amd.com ThreadContext *tc) 77410027SChris.Adeniyi-Jones@arm.com{ 77511907SBrandon.Potter@amd.com return openImpl<OS>(desc, callnum, process, tc, true); 77610027SChris.Adeniyi-Jones@arm.com} 77710027SChris.Adeniyi-Jones@arm.com 77810633Smichaelupton@gmail.com/// Target unlinkat() handler. 77910633Smichaelupton@gmail.comtemplate <class OS> 78010633Smichaelupton@gmail.comSyscallReturn 78111851Sbrandon.potter@amd.comunlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 78210633Smichaelupton@gmail.com ThreadContext *tc) 78310633Smichaelupton@gmail.com{ 78410633Smichaelupton@gmail.com int index = 0; 78510633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 78610633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 78710633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 78810633Smichaelupton@gmail.com 78910633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 79010633Smichaelupton@gmail.com} 79110633Smichaelupton@gmail.com 79210203SAli.Saidi@ARM.com/// Target facessat() handler 79310203SAli.Saidi@ARM.comtemplate <class OS> 79410203SAli.Saidi@ARM.comSyscallReturn 79511851Sbrandon.potter@amd.comfaccessatFunc(SyscallDesc *desc, int callnum, Process *process, 79611851Sbrandon.potter@amd.com ThreadContext *tc) 79710203SAli.Saidi@ARM.com{ 79810203SAli.Saidi@ARM.com int index = 0; 79910203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 80010203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 80110203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 80210203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 80310203SAli.Saidi@ARM.com} 80410203SAli.Saidi@ARM.com 80510203SAli.Saidi@ARM.com/// Target readlinkat() handler 80610203SAli.Saidi@ARM.comtemplate <class OS> 80710203SAli.Saidi@ARM.comSyscallReturn 80811851Sbrandon.potter@amd.comreadlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 80911851Sbrandon.potter@amd.com ThreadContext *tc) 81010203SAli.Saidi@ARM.com{ 81110203SAli.Saidi@ARM.com int index = 0; 81210203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 81310203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 81410203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 81510203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 81610203SAli.Saidi@ARM.com} 81710203SAli.Saidi@ARM.com 81810850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 81910850SGiacomo.Gabrielli@arm.comtemplate <class OS> 82010850SGiacomo.Gabrielli@arm.comSyscallReturn 82111851Sbrandon.potter@amd.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 83210850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 83310850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 83410850SGiacomo.Gabrielli@arm.com return -EFAULT; 83510850SGiacomo.Gabrielli@arm.com 83610850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 83710850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 83810850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 83910850SGiacomo.Gabrielli@arm.com 84010850SGiacomo.Gabrielli@arm.com std::string new_name; 84110850SGiacomo.Gabrielli@arm.com 84210850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 84310850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 84410850SGiacomo.Gabrielli@arm.com return -EFAULT; 84510850SGiacomo.Gabrielli@arm.com 84610850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 84710850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 84810850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 84910850SGiacomo.Gabrielli@arm.com 85010850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 85110850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 85210850SGiacomo.Gabrielli@arm.com} 85310850SGiacomo.Gabrielli@arm.com 8546640Svince@csl.cornell.edu/// Target sysinfo() handler. 8556640Svince@csl.cornell.edutemplate <class OS> 8566640Svince@csl.cornell.eduSyscallReturn 85711851Sbrandon.potter@amd.comsysinfoFunc(SyscallDesc *desc, int callnum, Process *process, 85811851Sbrandon.potter@amd.com ThreadContext *tc) 8596640Svince@csl.cornell.edu{ 8606640Svince@csl.cornell.edu 8616701Sgblack@eecs.umich.edu int index = 0; 8626701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 86310793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 8646640Svince@csl.cornell.edu 86511758Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 86611758Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 86711758Sbrandon.potter@amd.com sysinfo->mem_unit = 1; 8686640Svince@csl.cornell.edu 8698706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 8706640Svince@csl.cornell.edu 8716701Sgblack@eecs.umich.edu return 0; 8726640Svince@csl.cornell.edu} 873360SN/A 8741999SN/A/// Target chmod() handler. 8751999SN/Atemplate <class OS> 8761999SN/ASyscallReturn 87711851Sbrandon.potter@amd.comchmodFunc(SyscallDesc *desc, int callnum, Process *process, 8782680Sktlim@umich.edu ThreadContext *tc) 8791999SN/A{ 8801999SN/A std::string path; 8811999SN/A 8826701Sgblack@eecs.umich.edu int index = 0; 8838852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8846701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8851999SN/A return -EFAULT; 8866701Sgblack@eecs.umich.edu } 8871999SN/A 8886701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8891999SN/A mode_t hostMode = 0; 8901999SN/A 8911999SN/A // XXX translate mode flags via OS::something??? 8921999SN/A hostMode = mode; 8931999SN/A 8943669Sbinkertn@umich.edu // Adjust path for current working directory 8953669Sbinkertn@umich.edu path = process->fullPath(path); 8963669Sbinkertn@umich.edu 8971999SN/A // do the chmod 8981999SN/A int result = chmod(path.c_str(), hostMode); 8991999SN/A if (result < 0) 9002218SN/A return -errno; 9011999SN/A 9021999SN/A return 0; 9031999SN/A} 9041999SN/A 9051999SN/A 9061999SN/A/// Target fchmod() handler. 9071999SN/Atemplate <class OS> 9081999SN/ASyscallReturn 90911856Sbrandon.potter@amd.comfchmodFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 9101999SN/A{ 9116701Sgblack@eecs.umich.edu int index = 0; 91211856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 91311856Sbrandon.potter@amd.com uint32_t mode = p->getSyscallArg(tc, index); 91410931Sbrandon.potter@amd.com 91511856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 91611856Sbrandon.potter@amd.com if (!ffdp) 9171999SN/A return -EBADF; 91811856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 9191999SN/A 92011856Sbrandon.potter@amd.com mode_t hostMode = mode; 9211999SN/A 92211856Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 9231999SN/A 92411856Sbrandon.potter@amd.com return (result < 0) ? -errno : 0; 9251999SN/A} 9261999SN/A 9275877Shsul@eecs.umich.edu/// Target mremap() handler. 9285877Shsul@eecs.umich.edutemplate <class OS> 9295877Shsul@eecs.umich.eduSyscallReturn 93011851Sbrandon.potter@amd.commremapFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 9315877Shsul@eecs.umich.edu{ 9326701Sgblack@eecs.umich.edu int index = 0; 9336701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 9346701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 9356701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 9366701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 93710027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 93810027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 93910027SChris.Adeniyi-Jones@arm.com 94010027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 94110027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 9425877Shsul@eecs.umich.edu 94310318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 94410318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 9455877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 9465877Shsul@eecs.umich.edu return -EINVAL; 9475877Shsul@eecs.umich.edu } 9485877Shsul@eecs.umich.edu 94910486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 95010486Stjablin@gmail.com 9515877Shsul@eecs.umich.edu if (new_length > old_length) { 95211905SBrandon.Potter@amd.com std::shared_ptr<MemState> mem_state = process->memState; 95311905SBrandon.Potter@amd.com Addr mmap_end = mem_state->getMmapEnd(); 95411905SBrandon.Potter@amd.com 95511905SBrandon.Potter@amd.com if ((start + old_length) == mmap_end && 95610027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 9575877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 95811905SBrandon.Potter@amd.com process->allocateMem(mmap_end, diff); 95911905SBrandon.Potter@amd.com mem_state->setMmapEnd(mmap_end + diff); 9605877Shsul@eecs.umich.edu return start; 9615877Shsul@eecs.umich.edu } else { 96210027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 9635877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 9645877Shsul@eecs.umich.edu return -ENOMEM; 9655877Shsul@eecs.umich.edu } else { 96610027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 96711905SBrandon.Potter@amd.com provided_address : mmap_end; 96810027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 96910027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 97010027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 97110027SChris.Adeniyi-Jones@arm.com new_length - old_length); 9725877Shsul@eecs.umich.edu // add on the remaining unallocated pages 97310027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 97410027SChris.Adeniyi-Jones@arm.com new_length - old_length, 97510027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 97610027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 97711905SBrandon.Potter@amd.com mem_state->setMmapEnd(mmap_end + new_length); 97810027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 97911905SBrandon.Potter@amd.com new_start + new_length > mem_state->getMmapEnd()) { 98010027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 98110027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 98210027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 98310027SChris.Adeniyi-Jones@arm.com } 98410027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 98510027SChris.Adeniyi-Jones@arm.com return new_start; 9865877Shsul@eecs.umich.edu } 9875877Shsul@eecs.umich.edu } 9885877Shsul@eecs.umich.edu } else { 98910027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 99010027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 9918601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 99210027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 9935877Shsul@eecs.umich.edu } 9945877Shsul@eecs.umich.edu} 9951999SN/A 996378SN/A/// Target stat() handler. 997360SN/Atemplate <class OS> 9981450SN/ASyscallReturn 99911851Sbrandon.potter@amd.comstatFunc(SyscallDesc *desc, int callnum, Process *process, 10002680Sktlim@umich.edu ThreadContext *tc) 1001360SN/A{ 1002360SN/A std::string path; 1003360SN/A 10046701Sgblack@eecs.umich.edu int index = 0; 10058852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10066701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10076701Sgblack@eecs.umich.edu return -EFAULT; 10086701Sgblack@eecs.umich.edu } 10096701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1010360SN/A 10113669Sbinkertn@umich.edu // Adjust path for current working directory 10123669Sbinkertn@umich.edu path = process->fullPath(path); 10133669Sbinkertn@umich.edu 1014360SN/A struct stat hostBuf; 1015360SN/A int result = stat(path.c_str(), &hostBuf); 1016360SN/A 1017360SN/A if (result < 0) 10182218SN/A return -errno; 1019360SN/A 10208706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1021360SN/A 10221458SN/A return 0; 1023360SN/A} 1024360SN/A 1025360SN/A 10265074Ssaidi@eecs.umich.edu/// Target stat64() handler. 10275074Ssaidi@eecs.umich.edutemplate <class OS> 10285074Ssaidi@eecs.umich.eduSyscallReturn 102911851Sbrandon.potter@amd.comstat64Func(SyscallDesc *desc, int callnum, Process *process, 10305074Ssaidi@eecs.umich.edu ThreadContext *tc) 10315074Ssaidi@eecs.umich.edu{ 10325074Ssaidi@eecs.umich.edu std::string path; 10335074Ssaidi@eecs.umich.edu 10346701Sgblack@eecs.umich.edu int index = 0; 10358852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10366701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 10375074Ssaidi@eecs.umich.edu return -EFAULT; 10386701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10395074Ssaidi@eecs.umich.edu 10405074Ssaidi@eecs.umich.edu // Adjust path for current working directory 10415074Ssaidi@eecs.umich.edu path = process->fullPath(path); 10425074Ssaidi@eecs.umich.edu 10435208Ssaidi@eecs.umich.edu#if NO_STAT64 10445208Ssaidi@eecs.umich.edu struct stat hostBuf; 10455208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 10465208Ssaidi@eecs.umich.edu#else 10475074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 10485074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 10495208Ssaidi@eecs.umich.edu#endif 10505074Ssaidi@eecs.umich.edu 10515074Ssaidi@eecs.umich.edu if (result < 0) 10525074Ssaidi@eecs.umich.edu return -errno; 10535074Ssaidi@eecs.umich.edu 10548706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10555074Ssaidi@eecs.umich.edu 10565074Ssaidi@eecs.umich.edu return 0; 10575074Ssaidi@eecs.umich.edu} 10585074Ssaidi@eecs.umich.edu 10595074Ssaidi@eecs.umich.edu 106010027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 106110027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 106210027SChris.Adeniyi-Jones@arm.comSyscallReturn 106311851Sbrandon.potter@amd.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) 106910793Sbrandon.potter@amd.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; 107510027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 107610027SChris.Adeniyi-Jones@arm.com 107710027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 107810027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 107910027SChris.Adeniyi-Jones@arm.com 108010027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 108110027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 108210027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 108310027SChris.Adeniyi-Jones@arm.com#else 108410027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 108510027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 108610027SChris.Adeniyi-Jones@arm.com#endif 108710027SChris.Adeniyi-Jones@arm.com 108810027SChris.Adeniyi-Jones@arm.com if (result < 0) 108910027SChris.Adeniyi-Jones@arm.com return -errno; 109010027SChris.Adeniyi-Jones@arm.com 109110027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 109210027SChris.Adeniyi-Jones@arm.com 109310027SChris.Adeniyi-Jones@arm.com return 0; 109410027SChris.Adeniyi-Jones@arm.com} 109510027SChris.Adeniyi-Jones@arm.com 109610027SChris.Adeniyi-Jones@arm.com 10971999SN/A/// Target fstat64() handler. 10981999SN/Atemplate <class OS> 10991999SN/ASyscallReturn 110011856Sbrandon.potter@amd.comfstat64Func(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 11011999SN/A{ 11026701Sgblack@eecs.umich.edu int index = 0; 110311856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 110411856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 110510931Sbrandon.potter@amd.com 110611856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 110711856Sbrandon.potter@amd.com if (!ffdp) 11081999SN/A return -EBADF; 110911856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 11101999SN/A 11112764Sstever@eecs.umich.edu#if NO_STAT64 11122064SN/A struct stat hostBuf; 111310931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 11142064SN/A#else 11152064SN/A struct stat64 hostBuf; 111610931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 11172064SN/A#endif 11181999SN/A 11191999SN/A if (result < 0) 11202218SN/A return -errno; 11211999SN/A 112210931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11231999SN/A 11241999SN/A return 0; 11251999SN/A} 11261999SN/A 11271999SN/A 1128378SN/A/// Target lstat() handler. 1129360SN/Atemplate <class OS> 11301450SN/ASyscallReturn 113111851Sbrandon.potter@amd.comlstatFunc(SyscallDesc *desc, int callnum, Process *process, 11322680Sktlim@umich.edu ThreadContext *tc) 1133360SN/A{ 1134360SN/A std::string path; 1135360SN/A 11366701Sgblack@eecs.umich.edu int index = 0; 11378852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11386701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11396701Sgblack@eecs.umich.edu return -EFAULT; 11406701Sgblack@eecs.umich.edu } 11416701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1142360SN/A 11433669Sbinkertn@umich.edu // Adjust path for current working directory 11443669Sbinkertn@umich.edu path = process->fullPath(path); 11453669Sbinkertn@umich.edu 1146360SN/A struct stat hostBuf; 1147360SN/A int result = lstat(path.c_str(), &hostBuf); 1148360SN/A 1149360SN/A if (result < 0) 11501458SN/A return -errno; 1151360SN/A 11528706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1153360SN/A 11541458SN/A return 0; 1155360SN/A} 1156360SN/A 11571999SN/A/// Target lstat64() handler. 11581999SN/Atemplate <class OS> 11591999SN/ASyscallReturn 116011851Sbrandon.potter@amd.comlstat64Func(SyscallDesc *desc, int callnum, Process *process, 11612680Sktlim@umich.edu ThreadContext *tc) 11621999SN/A{ 11631999SN/A std::string path; 11641999SN/A 11656701Sgblack@eecs.umich.edu int index = 0; 11668852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11676701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11686701Sgblack@eecs.umich.edu return -EFAULT; 11696701Sgblack@eecs.umich.edu } 11706701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11711999SN/A 11723669Sbinkertn@umich.edu // Adjust path for current working directory 11733669Sbinkertn@umich.edu path = process->fullPath(path); 11743669Sbinkertn@umich.edu 11752764Sstever@eecs.umich.edu#if NO_STAT64 11762064SN/A struct stat hostBuf; 11772064SN/A int result = lstat(path.c_str(), &hostBuf); 11782064SN/A#else 11791999SN/A struct stat64 hostBuf; 11801999SN/A int result = lstat64(path.c_str(), &hostBuf); 11812064SN/A#endif 11821999SN/A 11831999SN/A if (result < 0) 11841999SN/A return -errno; 11851999SN/A 11868706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11871999SN/A 11881999SN/A return 0; 11891999SN/A} 11901999SN/A 1191378SN/A/// Target fstat() handler. 1192360SN/Atemplate <class OS> 11931450SN/ASyscallReturn 119411856Sbrandon.potter@amd.comfstatFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 1195360SN/A{ 11966701Sgblack@eecs.umich.edu int index = 0; 119711856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 119811856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 1199360SN/A 120011380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1201360SN/A 120211856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 120311856Sbrandon.potter@amd.com if (!ffdp) 12041458SN/A return -EBADF; 120511856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 1206360SN/A 1207360SN/A struct stat hostBuf; 120810931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1209360SN/A 1210360SN/A if (result < 0) 12111458SN/A return -errno; 1212360SN/A 121310931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 12142021SN/A 12151458SN/A return 0; 1216360SN/A} 1217360SN/A 1218360SN/A 12191706SN/A/// Target statfs() handler. 12201706SN/Atemplate <class OS> 12211706SN/ASyscallReturn 122211851Sbrandon.potter@amd.comstatfsFunc(SyscallDesc *desc, int callnum, Process *process, 12232680Sktlim@umich.edu ThreadContext *tc) 12241706SN/A{ 122511799Sbrandon.potter@amd.com#if NO_STATFS 122611799Sbrandon.potter@amd.com warn("Host OS cannot support calls to statfs. Ignoring syscall"); 122711799Sbrandon.potter@amd.com#else 12281706SN/A std::string path; 12291706SN/A 12306701Sgblack@eecs.umich.edu int index = 0; 12318852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 12326701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 12336701Sgblack@eecs.umich.edu return -EFAULT; 12346701Sgblack@eecs.umich.edu } 12356701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 12361706SN/A 12373669Sbinkertn@umich.edu // Adjust path for current working directory 12383669Sbinkertn@umich.edu path = process->fullPath(path); 12393669Sbinkertn@umich.edu 12401706SN/A struct statfs hostBuf; 12411706SN/A int result = statfs(path.c_str(), &hostBuf); 12421706SN/A 12431706SN/A if (result < 0) 12442218SN/A return -errno; 12451706SN/A 124611759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 124711799Sbrandon.potter@amd.com#endif 12481706SN/A return 0; 12491706SN/A} 12501706SN/A 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) 130011886Sbrandon.potter@amd.com fatal("temp_pid is too large: %d", temp_pid); 130111886Sbrandon.potter@amd.com 130211886Sbrandon.potter@amd.com pp->pid = temp_pid; 130311886Sbrandon.potter@amd.com pp->ppid = (flags & OS::TGT_CLONE_THREAD) ? p->ppid() : p->pid(); 130411886Sbrandon.potter@amd.com Process *cp = pp->create(); 130511886Sbrandon.potter@amd.com delete pp; 130611886Sbrandon.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); 136111886Sbrandon.potter@amd.com 136211886Sbrandon.potter@amd.com cp->setSyscallReturn(ctc, 0); 136311886Sbrandon.potter@amd.com 136411886Sbrandon.potter@amd.com#if THE_ISA == ALPHA_ISA 136511886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::SyscallSuccessReg, 0); 136611886Sbrandon.potter@amd.com#elif THE_ISA == SPARC_ISA 136711886Sbrandon.potter@amd.com tc->setIntReg(TheISA::SyscallPseudoReturnReg, 0); 136811886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::SyscallPseudoReturnReg, 1); 136911886Sbrandon.potter@amd.com#endif 137011886Sbrandon.potter@amd.com 137111886Sbrandon.potter@amd.com ctc->pcState(tc->nextInstAddr()); 137211886Sbrandon.potter@amd.com ctc->activate(); 137311886Sbrandon.potter@amd.com 137411886Sbrandon.potter@amd.com return cp->pid(); 137511886Sbrandon.potter@amd.com} 13761706SN/A 13771706SN/A/// Target fstatfs() handler. 13781706SN/Atemplate <class OS> 13791706SN/ASyscallReturn 138011856Sbrandon.potter@amd.comfstatfsFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 13811706SN/A{ 13826701Sgblack@eecs.umich.edu int index = 0; 138311856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 138411856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 13851706SN/A 138611856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 138711856Sbrandon.potter@amd.com if (!ffdp) 13881706SN/A return -EBADF; 138911856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 13901706SN/A 13911706SN/A struct statfs hostBuf; 139210931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 13931706SN/A 13941706SN/A if (result < 0) 13952218SN/A return -errno; 13961706SN/A 139711759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 13981706SN/A 13991706SN/A return 0; 14001706SN/A} 14011706SN/A 14021706SN/A 14031999SN/A/// Target writev() handler. 14041999SN/Atemplate <class OS> 14051999SN/ASyscallReturn 140611856Sbrandon.potter@amd.comwritevFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 14071999SN/A{ 14086701Sgblack@eecs.umich.edu int index = 0; 140911856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 141010931Sbrandon.potter@amd.com 141111856Sbrandon.potter@amd.com auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 141211856Sbrandon.potter@amd.com if (!hbfdp) 14131999SN/A return -EBADF; 141411856Sbrandon.potter@amd.com int sim_fd = hbfdp->getSimFD(); 14151999SN/A 141611856Sbrandon.potter@amd.com SETranslatingPortProxy &prox = tc->getMemProxy(); 141711856Sbrandon.potter@amd.com uint64_t tiov_base = p->getSyscallArg(tc, index); 141811856Sbrandon.potter@amd.com size_t count = p->getSyscallArg(tc, index); 14191999SN/A struct iovec hiov[count]; 14206227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 14211999SN/A typename OS::tgt_iovec tiov; 14222461SN/A 142311856Sbrandon.potter@amd.com prox.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 142411856Sbrandon.potter@amd.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 14258737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 14261999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 142711856Sbrandon.potter@amd.com prox.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 142811856Sbrandon.potter@amd.com hiov[i].iov_len); 14291999SN/A } 14301999SN/A 143110931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 14321999SN/A 14336227Snate@binkert.org for (size_t i = 0; i < count; ++i) 14341999SN/A delete [] (char *)hiov[i].iov_base; 14351999SN/A 14361999SN/A if (result < 0) 14372218SN/A return -errno; 14381999SN/A 143910629Sjthestness@gmail.com return result; 14401999SN/A} 14411999SN/A 144211385Sbrandon.potter@amd.com/// Real mmap handler. 1443360SN/Atemplate <class OS> 14441450SN/ASyscallReturn 144511851Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 144611385Sbrandon.potter@amd.com bool is_mmap2) 1447360SN/A{ 14486701Sgblack@eecs.umich.edu int index = 0; 14496701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 14506701Sgblack@eecs.umich.edu 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); 145410486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1455360SN/A 145611385Sbrandon.potter@amd.com if (is_mmap2) 145711385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 14589008Sgblack@eecs.umich.edu 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 } 14688324Ssteve.reinhardt@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 147811383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 147911383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 148011383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 148111383Sbrandon.potter@amd.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 148511383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 148611383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 148711383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 148811383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 148911383Sbrandon.potter@amd.com // than we currently maintain. 149011383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 149111383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 149211383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 14938324Ssteve.reinhardt@amd.com } 14945877Shsul@eecs.umich.edu 149510486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 149610486Stjablin@gmail.com 149711383Sbrandon.potter@amd.com int sim_fd = -1; 149811383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 149911383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 150011856Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 150111624Smichael.lebeane@amd.com 150211856Sbrandon.potter@amd.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>(fdep); 150311856Sbrandon.potter@amd.com if (dfdp) { 150411856Sbrandon.potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 150511856Sbrandon.potter@amd.com return emul_driver->mmap(p, tc, start, length, prot, 150611624Smichael.lebeane@amd.com tgt_flags, tgt_fd, offset); 150711624Smichael.lebeane@amd.com } 150811624Smichael.lebeane@amd.com 150911856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 151011856Sbrandon.potter@amd.com if (!ffdp) 151111383Sbrandon.potter@amd.com return -EBADF; 151211856Sbrandon.potter@amd.com sim_fd = ffdp->getSimFD(); 1513360SN/A 151411383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 151511383Sbrandon.potter@amd.com sim_fd, offset); 15168600Ssteve.reinhardt@amd.com 151711383Sbrandon.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; 15208600Ssteve.reinhardt@amd.com } 15212544SN/A } 15222544SN/A 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)) { 152611905SBrandon.Potter@amd.com std::shared_ptr<MemState> mem_state = p->memState; 152711905SBrandon.Potter@amd.com Addr mmap_end = mem_state->getMmapEnd(); 152811905SBrandon.Potter@amd.com 152911905SBrandon.Potter@amd.com start = p->mmapGrowsDown() ? mmap_end - length : mmap_end; 153011905SBrandon.Potter@amd.com mmap_end = p->mmapGrowsDown() ? start : mmap_end + length; 153111905SBrandon.Potter@amd.com 153211905SBrandon.Potter@amd.com mem_state->setMmapEnd(mmap_end); 153311383Sbrandon.potter@amd.com } 153411383Sbrandon.potter@amd.com 153511383Sbrandon.potter@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 153911383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 154011383Sbrandon.potter@amd.com // 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(); 15488600Ssteve.reinhardt@amd.com } 15496672Sgblack@eecs.umich.edu } 15508600Ssteve.reinhardt@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. 15548601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 15552544SN/A 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. 157311383Sbrandon.potter@amd.com struct stat file_stat; 157411383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 157511383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 157611383Sbrandon.potter@amd.com 157711383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 157811383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 157911383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 158011383Sbrandon.potter@amd.com // on the specified offset into the file. 158111383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 158211383Sbrandon.potter@amd.com length); 158311383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 158411383Sbrandon.potter@amd.com 158511383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 158611383Sbrandon.potter@amd.com munmap(pmap, length); 158711383Sbrandon.potter@amd.com 158811392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 158911392Sbrandon.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(); 159811392Sbrandon.potter@amd.com 159911392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 160011392Sbrandon.potter@amd.com 160111392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 160211856Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 160311856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 160411856Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(ffdp->getFileName()); 160511392Sbrandon.potter@amd.com 160611392Sbrandon.potter@amd.com if (lib) { 160711392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 160811392Sbrandon.potter@amd.com lib->textBase(), start); 160911392Sbrandon.potter@amd.com } 161011392Sbrandon.potter@amd.com } 161111392Sbrandon.potter@amd.com } 161211392Sbrandon.potter@amd.com 161311383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 161411383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 161511383Sbrandon.potter@amd.com // execution (hopefully). 161611383Sbrandon.potter@amd.com } 161711383Sbrandon.potter@amd.com 16181458SN/A return start; 1619360SN/A} 1620360SN/A 162111593Santhony.gutierrez@amd.comtemplate <class OS> 162211593Santhony.gutierrez@amd.comSyscallReturn 162311851Sbrandon.potter@amd.compwrite64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 162411593Santhony.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); 162911593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 163011593Santhony.gutierrez@amd.com 163111856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 163211856Sbrandon.potter@amd.com if (!ffdp) 163311593Santhony.gutierrez@amd.com return -EBADF; 163411856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 163511593Santhony.gutierrez@amd.com 163611593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 163711593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 163811593Santhony.gutierrez@amd.com 163911594Santhony.gutierrez@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 164011593Santhony.gutierrez@amd.com 164111593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 164211593Santhony.gutierrez@amd.com} 164311593Santhony.gutierrez@amd.com 164411385Sbrandon.potter@amd.com/// Target mmap() handler. 164511385Sbrandon.potter@amd.comtemplate <class OS> 164611385Sbrandon.potter@amd.comSyscallReturn 164711851Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 164811385Sbrandon.potter@amd.com{ 164911385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 165011385Sbrandon.potter@amd.com} 165111385Sbrandon.potter@amd.com 165211385Sbrandon.potter@amd.com/// Target mmap2() handler. 165311385Sbrandon.potter@amd.comtemplate <class OS> 165411385Sbrandon.potter@amd.comSyscallReturn 165511851Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 165611385Sbrandon.potter@amd.com{ 165711385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 165811385Sbrandon.potter@amd.com} 165911385Sbrandon.potter@amd.com 1660378SN/A/// Target getrlimit() handler. 1661360SN/Atemplate <class OS> 16621450SN/ASyscallReturn 166311851Sbrandon.potter@amd.comgetrlimitFunc(SyscallDesc *desc, int callnum, Process *process, 166411851Sbrandon.potter@amd.com ThreadContext *tc) 1665360SN/A{ 16666701Sgblack@eecs.umich.edu int index = 0; 16676701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 16686701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1669360SN/A 1670360SN/A 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; 167411906SBrandon.Potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 167511906SBrandon.Potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 167611906SBrandon.Potter@amd.com break; 1677360SN/A 167811906SBrandon.Potter@amd.com case OS::TGT_RLIMIT_DATA: 167911906SBrandon.Potter@amd.com // max data segment size in bytes: make up a number 168011906SBrandon.Potter@amd.com rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 168111906SBrandon.Potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 168211906SBrandon.Potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 168311906SBrandon.Potter@amd.com break; 16845877Shsul@eecs.umich.edu 168511906SBrandon.Potter@amd.com default: 168611906SBrandon.Potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 168711906SBrandon.Potter@amd.com return -EINVAL; 168811906SBrandon.Potter@amd.com break; 1689360SN/A } 1690360SN/A 16918706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 16921458SN/A return 0; 1693360SN/A} 1694360SN/A 169510796Sbrandon.potter@amd.com/// Target clock_gettime() function. 169610796Sbrandon.potter@amd.comtemplate <class OS> 169710796Sbrandon.potter@amd.comSyscallReturn 169811851Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 169910796Sbrandon.potter@amd.com{ 170010796Sbrandon.potter@amd.com int index = 1; 170110796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 170210796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 170310796Sbrandon.potter@amd.com 170410796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 170510796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 170610796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 170710796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 170810796Sbrandon.potter@amd.com 170910796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 171010796Sbrandon.potter@amd.com 171110796Sbrandon.potter@amd.com return 0; 171210796Sbrandon.potter@amd.com} 171310796Sbrandon.potter@amd.com 171411337SMichael.Lebeane@amd.com/// Target clock_getres() function. 171511337SMichael.Lebeane@amd.comtemplate <class OS> 171611337SMichael.Lebeane@amd.comSyscallReturn 171711851Sbrandon.potter@amd.comclock_getresFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 171811337SMichael.Lebeane@amd.com{ 171911337SMichael.Lebeane@amd.com int index = 1; 172011337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 172111337SMichael.Lebeane@amd.com 172211337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 172311337SMichael.Lebeane@amd.com tp->tv_sec = 0; 172411337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 172511337SMichael.Lebeane@amd.com 172611337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 172711337SMichael.Lebeane@amd.com 172811337SMichael.Lebeane@amd.com return 0; 172911337SMichael.Lebeane@amd.com} 173011337SMichael.Lebeane@amd.com 1731378SN/A/// Target gettimeofday() handler. 1732360SN/Atemplate <class OS> 17331450SN/ASyscallReturn 173411851Sbrandon.potter@amd.comgettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process, 173511851Sbrandon.potter@amd.com ThreadContext *tc) 1736360SN/A{ 17376701Sgblack@eecs.umich.edu int index = 0; 17386701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1739360SN/A 174010796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1741360SN/A tp->tv_sec += seconds_since_epoch; 17426109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 17436109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1744360SN/A 17458706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1746360SN/A 17471458SN/A return 0; 1748360SN/A} 1749360SN/A 1750360SN/A 17511999SN/A/// Target utimes() handler. 17521999SN/Atemplate <class OS> 17531999SN/ASyscallReturn 175411851Sbrandon.potter@amd.comutimesFunc(SyscallDesc *desc, int callnum, Process *process, 17552680Sktlim@umich.edu ThreadContext *tc) 17561999SN/A{ 17571999SN/A std::string path; 17581999SN/A 17596701Sgblack@eecs.umich.edu int index = 0; 17608852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 17616701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 17626701Sgblack@eecs.umich.edu return -EFAULT; 17636701Sgblack@eecs.umich.edu } 17641999SN/A 17656701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 17666701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 17678706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 17681999SN/A 17691999SN/A struct timeval hostTimeval[2]; 177011906SBrandon.Potter@amd.com for (int i = 0; i < 2; ++i) { 17718737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 17728737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 17731999SN/A } 17743669Sbinkertn@umich.edu 17753669Sbinkertn@umich.edu // Adjust path for current working directory 17763669Sbinkertn@umich.edu path = process->fullPath(path); 17773669Sbinkertn@umich.edu 17781999SN/A int result = utimes(path.c_str(), hostTimeval); 17791999SN/A 17801999SN/A if (result < 0) 17811999SN/A return -errno; 17821999SN/A 17831999SN/A return 0; 17841999SN/A} 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 186311886Sbrandon.potter@amd.com *new_p->sigchld = true; 186411886Sbrandon.potter@amd.com 186511886Sbrandon.potter@amd.com delete p; 186611886Sbrandon.potter@amd.com tc->clearArchRegs(); 186711886Sbrandon.potter@amd.com tc->setProcessPtr(new_p); 186811886Sbrandon.potter@amd.com new_p->assignThreadContext(tc->contextId()); 186911886Sbrandon.potter@amd.com new_p->initState(); 187011886Sbrandon.potter@amd.com tc->activate(); 187111886Sbrandon.potter@amd.com TheISA::PCState pcState = tc->pcState(); 187211886Sbrandon.potter@amd.com tc->setNPC(pcState.instAddr()); 187311886Sbrandon.potter@amd.com 187411886Sbrandon.potter@amd.com desc->setFlags(SyscallDesc::SuppressReturnValue); 187511886Sbrandon.potter@amd.com return 0; 187611886Sbrandon.potter@amd.com} 187711886Sbrandon.potter@amd.com 1878378SN/A/// Target getrusage() function. 1879360SN/Atemplate <class OS> 18801450SN/ASyscallReturn 188111851Sbrandon.potter@amd.comgetrusageFunc(SyscallDesc *desc, int callnum, Process *process, 18822680Sktlim@umich.edu ThreadContext *tc) 1883360SN/A{ 18846701Sgblack@eecs.umich.edu int index = 0; 18856701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 18866701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1887360SN/A 18883670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 18893670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1890360SN/A rup->ru_stime.tv_sec = 0; 1891360SN/A rup->ru_stime.tv_usec = 0; 1892360SN/A rup->ru_maxrss = 0; 1893360SN/A rup->ru_ixrss = 0; 1894360SN/A rup->ru_idrss = 0; 1895360SN/A rup->ru_isrss = 0; 1896360SN/A rup->ru_minflt = 0; 1897360SN/A rup->ru_majflt = 0; 1898360SN/A rup->ru_nswap = 0; 1899360SN/A rup->ru_inblock = 0; 1900360SN/A rup->ru_oublock = 0; 1901360SN/A rup->ru_msgsnd = 0; 1902360SN/A rup->ru_msgrcv = 0; 1903360SN/A rup->ru_nsignals = 0; 1904360SN/A rup->ru_nvcsw = 0; 1905360SN/A rup->ru_nivcsw = 0; 1906360SN/A 19073670Sbinkertn@umich.edu switch (who) { 19083670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 190910796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 19108737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 19118737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 19123670Sbinkertn@umich.edu break; 19133670Sbinkertn@umich.edu 19143670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 19153670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 19163670Sbinkertn@umich.edu break; 19173670Sbinkertn@umich.edu 19183670Sbinkertn@umich.edu default: 19193670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 19203670Sbinkertn@umich.edu // plow ahead 19213670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 19223670Sbinkertn@umich.edu who); 19233670Sbinkertn@umich.edu } 19243670Sbinkertn@umich.edu 19258706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1926360SN/A 19271458SN/A return 0; 1928360SN/A} 1929360SN/A 19306683Stjones1@inf.ed.ac.uk/// Target times() function. 19316683Stjones1@inf.ed.ac.uktemplate <class OS> 19326683Stjones1@inf.ed.ac.ukSyscallReturn 193311851Sbrandon.potter@amd.comtimesFunc(SyscallDesc *desc, int callnum, Process *process, 193411851Sbrandon.potter@amd.com ThreadContext *tc) 19356683Stjones1@inf.ed.ac.uk{ 19366701Sgblack@eecs.umich.edu int index = 0; 19376701Sgblack@eecs.umich.edu 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) 19407823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 19416683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 19426683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 19436683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 19446683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 19456683Stjones1@inf.ed.ac.uk 19466683Stjones1@inf.ed.ac.uk // Convert to host endianness 19478737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 19486683Stjones1@inf.ed.ac.uk 19496683Stjones1@inf.ed.ac.uk // Write back 19508706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 19516683Stjones1@inf.ed.ac.uk 19526683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 19536683Stjones1@inf.ed.ac.uk return clocks; 19546683Stjones1@inf.ed.ac.uk} 19552553SN/A 19566684Stjones1@inf.ed.ac.uk/// Target time() function. 19576684Stjones1@inf.ed.ac.uktemplate <class OS> 19586684Stjones1@inf.ed.ac.ukSyscallReturn 195911851Sbrandon.potter@amd.comtimeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 19606684Stjones1@inf.ed.ac.uk{ 19616684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 196210796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 19636684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 19646684Stjones1@inf.ed.ac.uk 19656701Sgblack@eecs.umich.edu int index = 0; 19666701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 196711321Ssteve.reinhardt@amd.com if (taddr != 0) { 19686684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 19698737Skoansin.tan@gmail.com t = TheISA::htog(t); 19708852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 19718852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 19726684Stjones1@inf.ed.ac.uk } 19736684Stjones1@inf.ed.ac.uk return sec; 19746684Stjones1@inf.ed.ac.uk} 19752553SN/A 197611910SBrandon.Potter@amd.comtemplate <class OS> 197711910SBrandon.Potter@amd.comSyscallReturn 197811910SBrandon.Potter@amd.comtgkillFunc(SyscallDesc *desc, int num, Process *process, ThreadContext *tc) 197911910SBrandon.Potter@amd.com{ 198011910SBrandon.Potter@amd.com int index = 0; 198111910SBrandon.Potter@amd.com int tgid = process->getSyscallArg(tc, index); 198211910SBrandon.Potter@amd.com int tid = process->getSyscallArg(tc, index); 198311910SBrandon.Potter@amd.com int sig = process->getSyscallArg(tc, index); 198411910SBrandon.Potter@amd.com 198511910SBrandon.Potter@amd.com /** 198611910SBrandon.Potter@amd.com * This system call is intended to allow killing a specific thread 198711910SBrandon.Potter@amd.com * within an arbitrary thread group if sanctioned with permission checks. 198811910SBrandon.Potter@amd.com * It's usually true that threads share the termination signal as pointed 198911910SBrandon.Potter@amd.com * out by the pthread_kill man page and this seems to be the intended 199011910SBrandon.Potter@amd.com * usage. Due to this being an emulated environment, assume the following: 199111910SBrandon.Potter@amd.com * Threads are allowed to call tgkill because the EUID for all threads 199211910SBrandon.Potter@amd.com * should be the same. There is no signal handling mechanism for kernel 199311910SBrandon.Potter@amd.com * registration of signal handlers since signals are poorly supported in 199411910SBrandon.Potter@amd.com * emulation mode. Since signal handlers cannot be registered, all 199511910SBrandon.Potter@amd.com * threads within in a thread group must share the termination signal. 199611910SBrandon.Potter@amd.com * We never exhaust PIDs so there's no chance of finding the wrong one 199711910SBrandon.Potter@amd.com * due to PID rollover. 199811910SBrandon.Potter@amd.com */ 199911910SBrandon.Potter@amd.com 200011910SBrandon.Potter@amd.com System *sys = tc->getSystemPtr(); 200111910SBrandon.Potter@amd.com Process *tgt_proc = nullptr; 200211910SBrandon.Potter@amd.com for (int i = 0; i < sys->numContexts(); i++) { 200311910SBrandon.Potter@amd.com Process *temp = sys->threadContexts[i]->getProcessPtr(); 200411910SBrandon.Potter@amd.com if (temp->pid() == tid) { 200511910SBrandon.Potter@amd.com tgt_proc = temp; 200611910SBrandon.Potter@amd.com break; 200711910SBrandon.Potter@amd.com } 200811910SBrandon.Potter@amd.com } 200911910SBrandon.Potter@amd.com 201011910SBrandon.Potter@amd.com if (sig != 0 || sig != OS::TGT_SIGABRT) 201111910SBrandon.Potter@amd.com return -EINVAL; 201211910SBrandon.Potter@amd.com 201311910SBrandon.Potter@amd.com if (tgt_proc == nullptr) 201411910SBrandon.Potter@amd.com return -ESRCH; 201511910SBrandon.Potter@amd.com 201611910SBrandon.Potter@amd.com if (tgid != -1 && tgt_proc->tgid() != tgid) 201711910SBrandon.Potter@amd.com return -ESRCH; 201811910SBrandon.Potter@amd.com 201911910SBrandon.Potter@amd.com if (sig == OS::TGT_SIGABRT) 202011910SBrandon.Potter@amd.com exitGroupFunc(desc, 252, process, tc); 202111910SBrandon.Potter@amd.com 202211910SBrandon.Potter@amd.com return 0; 202311910SBrandon.Potter@amd.com} 202411910SBrandon.Potter@amd.com 20252553SN/A 20261354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 2027