syscall_emul.hh revision 11851
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 4812018Sandreas.sandberg@arm.com#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 4912018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__CYGWIN__) || \ 5012018Sandreas.sandberg@arm.com defined(__NetBSD__)) 5112018Sandreas.sandberg@arm.com 5212018Sandreas.sandberg@arm.com#define NO_STATFS (defined(__APPLE__) || defined(__OpenBSD__) || \ 5312018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__NetBSD__)) 5412018Sandreas.sandberg@arm.com 552064SN/A#define NO_FALLOCATE (defined(__APPLE__) || defined(__OpenBSD__) || \ 5612018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__NetBSD__)) 5712018Sandreas.sandberg@arm.com 5812018Sandreas.sandberg@arm.com/// 5912018Sandreas.sandberg@arm.com/// @file syscall_emul.hh 6012018Sandreas.sandberg@arm.com/// 6112018Sandreas.sandberg@arm.com/// This file defines objects used to emulate syscalls from the target 6211799Sbrandon.potter@amd.com/// application on the host machine. 6312018Sandreas.sandberg@arm.com 6412018Sandreas.sandberg@arm.com#ifdef __CYGWIN32__ 6512018Sandreas.sandberg@arm.com#include <sys/fcntl.h> 6612018Sandreas.sandberg@arm.com 6712018Sandreas.sandberg@arm.com#endif 6812018Sandreas.sandberg@arm.com#include <fcntl.h> 6911799Sbrandon.potter@amd.com#include <sys/mman.h> 70360SN/A#include <sys/stat.h> 71360SN/A#if (NO_STATFS == 0) 72360SN/A#include <sys/statfs.h> 73360SN/A#else 74360SN/A#include <sys/mount.h> 75360SN/A#endif 761809SN/A#include <sys/time.h> 7711800Sbrandon.potter@amd.com#include <sys/uio.h> 7811392Sbrandon.potter@amd.com#include <unistd.h> 791809SN/A 8011392Sbrandon.potter@amd.com#include <cerrno> 8111383Sbrandon.potter@amd.com#include <string> 823113Sgblack@eecs.umich.edu 8311799Sbrandon.potter@amd.com#include "base/intmath.hh" 8411759Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 8511812Sbaz21@cam.ac.uk#include "base/misc.hh" 8611812Sbaz21@cam.ac.uk#include "base/trace.hh" 8711799Sbrandon.potter@amd.com#include "base/types.hh" 888229Snate@binkert.org#include "config/the_isa.hh" 898229Snate@binkert.org#include "cpu/base.hh" 9011594Santhony.gutierrez@amd.com#include "cpu/thread_context.hh" 917075Snate@binkert.org#include "mem/page_table.hh" 928229Snate@binkert.org#include "sim/emul_driver.hh" 9311856Sbrandon.potter@amd.com#include "sim/process.hh" 947075Snate@binkert.org#include "sim/syscall_debug_macros.hh" 95360SN/A#include "sim/syscall_emul_buf.hh" 9611886Sbrandon.potter@amd.com#include "sim/syscall_return.hh" 9711800Sbrandon.potter@amd.com 9811392Sbrandon.potter@amd.comclass SyscallDesc; 9912334Sgabeblack@google.com 1001354SN/A////////////////////////////////////////////////////////////////////// 1016216Snate@binkert.org// 1026658Snate@binkert.org// The following emulation functions are generic enough that they 1032474SN/A// don't need to be recompiled for different emulated OS's. They are 1042680Sktlim@umich.edu// defined in sim/syscall_emul.cc. 1058229Snate@binkert.org// 10611886Sbrandon.potter@amd.com////////////////////////////////////////////////////////////////////// 10710496Ssteve.reinhardt@amd.com 10811911SBrandon.Potter@amd.com 1098229Snate@binkert.org/// Handler for unimplemented syscalls that we haven't thought about. 11011794Sbrandon.potter@amd.comSyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 11111886Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 11210497Ssteve.reinhardt@amd.com 11311794Sbrandon.potter@amd.com/// Handler for unimplemented syscalls that we never intend to 114360SN/A/// implement (signal handling, etc.) and should not affect the correct 115360SN/A/// behavior of the program. Print a warning only if the appropriate 116360SN/A/// trace flag is enabled. Return success to the target program. 117360SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 118360SN/A Process *p, ThreadContext *tc); 119360SN/A 120360SN/A// Target fallocateFunc() handler. 121360SN/ASyscallReturn fallocateFunc(SyscallDesc *desc, int num, 122360SN/A Process *p, ThreadContext *tc); 123360SN/A 124378SN/A/// Target exit() handler: terminate current context. 1251706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 12611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 127378SN/A 128378SN/A/// Target exit_group() handler: terminate simulation. (exit all threads) 129378SN/ASyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 130378SN/A Process *p, ThreadContext *tc); 131378SN/A 1321706SN/A/// Target getpagesize() handler. 13311851Sbrandon.potter@amd.comSyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 134360SN/A Process *p, ThreadContext *tc); 13511760Sbrandon.potter@amd.com 13611760Sbrandon.potter@amd.com/// Target brk() handler: set brk address. 13711851Sbrandon.potter@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 13811760Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1396109Ssanchezd@stanford.edu 1401706SN/A/// Target close() handler. 14111851Sbrandon.potter@amd.comSyscallReturn closeFunc(SyscallDesc *desc, int num, 142378SN/A Process *p, ThreadContext *tc); 1436109Ssanchezd@stanford.edu 1446109Ssanchezd@stanford.edu/// Target read() handler. 14511851Sbrandon.potter@amd.comSyscallReturn readFunc(SyscallDesc *desc, int num, 1466109Ssanchezd@stanford.edu Process *p, ThreadContext *tc); 14711886Sbrandon.potter@amd.com 14811886Sbrandon.potter@amd.com/// Target write() handler. 14911886Sbrandon.potter@amd.comSyscallReturn writeFunc(SyscallDesc *desc, int num, 15011886Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 151378SN/A 1521706SN/A/// Target lseek() handler. 15311851Sbrandon.potter@amd.comSyscallReturn lseekFunc(SyscallDesc *desc, int num, 154378SN/A Process *p, ThreadContext *tc); 1555748SSteve.Reinhardt@amd.com 1565748SSteve.Reinhardt@amd.com/// Target _llseek() handler. 15711851Sbrandon.potter@amd.comSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 158378SN/A Process *p, ThreadContext *tc); 159378SN/A 1601706SN/A/// Target munmap() handler. 16111851Sbrandon.potter@amd.comSyscallReturn munmapFunc(SyscallDesc *desc, int num, 162378SN/A Process *p, ThreadContext *tc); 16311886Sbrandon.potter@amd.com 1641706SN/A/// Target gethostname() handler. 16511851Sbrandon.potter@amd.comSyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 166378SN/A Process *p, ThreadContext *tc); 167378SN/A 1681706SN/A/// Target getcwd() handler. 16911851Sbrandon.potter@amd.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 170378SN/A Process *p, ThreadContext *tc); 171378SN/A 1721706SN/A/// Target readlink() handler. 17311851Sbrandon.potter@amd.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 174378SN/A Process *p, ThreadContext *tc, 1754118Sgblack@eecs.umich.edu int index = 0); 1764118Sgblack@eecs.umich.eduSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 17711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1784118Sgblack@eecs.umich.edu 179378SN/A/// Target unlink() handler. 1801706SN/ASyscallReturn unlinkHelper(SyscallDesc *desc, int num, 18111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 182378SN/A int index); 183378SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 1841706SN/A Process *p, ThreadContext *tc); 18511851Sbrandon.potter@amd.com 186360SN/A/// Target mkdir() handler. 1875513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 1885513SMichael.Adler@intel.com Process *p, ThreadContext *tc); 18911851Sbrandon.potter@amd.com 1905513SMichael.Adler@intel.com/// Target rename() handler. 19110203SAli.Saidi@ARM.comSyscallReturn renameFunc(SyscallDesc *desc, int num, 19210203SAli.Saidi@ARM.com Process *p, ThreadContext *tc); 19311851Sbrandon.potter@amd.com 19410203SAli.Saidi@ARM.com 1955513SMichael.Adler@intel.com/// Target truncate() handler. 19611851Sbrandon.potter@amd.comSyscallReturn truncateFunc(SyscallDesc *desc, int num, 1975513SMichael.Adler@intel.com Process *p, ThreadContext *tc); 198511SN/A 19910633Smichaelupton@gmail.com 20011851Sbrandon.potter@amd.com/// Target ftruncate() handler. 20110633Smichaelupton@gmail.comSyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2021706SN/A Process *p, ThreadContext *tc); 20311851Sbrandon.potter@amd.com 204511SN/A 2055513SMichael.Adler@intel.com/// Target truncate64() handler. 2065513SMichael.Adler@intel.comSyscallReturn truncate64Func(SyscallDesc *desc, int num, 20711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2085513SMichael.Adler@intel.com 209511SN/A/// Target ftruncate64() handler. 2101706SN/ASyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 21111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2121706SN/A 2131706SN/A 2141706SN/A/// Target umask() handler. 2151706SN/ASyscallReturn umaskFunc(SyscallDesc *desc, int num, 21611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2171706SN/A 2181706SN/A 2191706SN/A/// Target chown() handler. 2201706SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 22111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2221706SN/A 223511SN/A 2246703Svince@csl.cornell.edu/// Target fchown() handler. 2256703Svince@csl.cornell.eduSyscallReturn fchownFunc(SyscallDesc *desc, int num, 22611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2276703Svince@csl.cornell.edu 2286685Stjones1@inf.ed.ac.uk/// Target dup() handler. 2296685Stjones1@inf.ed.ac.ukSyscallReturn dupFunc(SyscallDesc *desc, int num, 23011851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2316685Stjones1@inf.ed.ac.uk 2326685Stjones1@inf.ed.ac.uk/// Target fnctl() handler. 2335513SMichael.Adler@intel.comSyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2345513SMichael.Adler@intel.com Process *process, ThreadContext *tc); 23511851Sbrandon.potter@amd.com 2365513SMichael.Adler@intel.com/// Target fcntl64() handler. 23711885Sbrandon.potter@amd.comSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 23811885Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 23911885Sbrandon.potter@amd.com 2405513SMichael.Adler@intel.com/// Target setuid() handler. 2411999SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2421999SN/A Process *p, ThreadContext *tc); 24311851Sbrandon.potter@amd.com 2441999SN/A/// Target getpid() handler. 24511885Sbrandon.potter@amd.comSyscallReturn getpidFunc(SyscallDesc *desc, int num, 24611885Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 24711885Sbrandon.potter@amd.com 2481999SN/A/// Target getuid() handler. 2491999SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2501999SN/A Process *p, ThreadContext *tc); 25111851Sbrandon.potter@amd.com 2521999SN/A/// Target getgid() handler. 2533079Sstever@eecs.umich.eduSyscallReturn getgidFunc(SyscallDesc *desc, int num, 2543079Sstever@eecs.umich.edu Process *p, ThreadContext *tc); 25511851Sbrandon.potter@amd.com 2563079Sstever@eecs.umich.edu/// Target getppid() handler. 25711908SBrandon.Potter@amd.comSyscallReturn getppidFunc(SyscallDesc *desc, int num, 25811908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 25911908SBrandon.Potter@amd.com 26011908SBrandon.Potter@amd.com/// Target geteuid() handler. 26111875Sbrandon.potter@amd.comSyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2622093SN/A Process *p, ThreadContext *tc); 26311851Sbrandon.potter@amd.com 2642093SN/A/// Target getegid() handler. 2652687Sksewell@umich.eduSyscallReturn getegidFunc(SyscallDesc *desc, int num, 2662687Sksewell@umich.edu Process *p, ThreadContext *tc); 26711851Sbrandon.potter@amd.com 2682687Sksewell@umich.edu/// Target clone() handler. 2692238SN/ASyscallReturn cloneFunc(SyscallDesc *desc, int num, 2702238SN/A Process *p, ThreadContext *tc); 27111851Sbrandon.potter@amd.com 2722238SN/A/// Target access() handler 27311908SBrandon.Potter@amd.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 27411908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 27511908SBrandon.Potter@amd.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 27611908SBrandon.Potter@amd.com Process *p, ThreadContext *tc, 27711908SBrandon.Potter@amd.com int index); 27811908SBrandon.Potter@amd.com 27911908SBrandon.Potter@amd.com/// Futex system call 28011908SBrandon.Potter@amd.com/// Implemented by Daniel Sanchez 2812238SN/A/// Used by printf's in multi-threaded apps 2822238SN/Atemplate <class OS> 28311851Sbrandon.potter@amd.comSyscallReturn 2842238SN/AfutexFunc(SyscallDesc *desc, int callnum, Process *process, 2852238SN/A ThreadContext *tc) 2862238SN/A{ 28711851Sbrandon.potter@amd.com int index_uaddr = 0; 2882238SN/A int index_op = 1; 2892238SN/A int index_val = 2; 2902238SN/A int index_timeout = 3; 29111851Sbrandon.potter@amd.com 2922238SN/A uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 2932238SN/A int op = process->getSyscallArg(tc, index_op); 2942238SN/A int val = process->getSyscallArg(tc, index_val); 29511851Sbrandon.potter@amd.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 2962238SN/A 2972238SN/A std::map<uint64_t, std::list<ThreadContext *> * > 2982238SN/A &futex_map = tc->getSystemPtr()->futexMap; 29911851Sbrandon.potter@amd.com 3002238SN/A DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3012238SN/A uaddr, op, val); 3022238SN/A 30311851Sbrandon.potter@amd.com op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3042238SN/A 3059455Smitch.hayenga+gem5@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3069455Smitch.hayenga+gem5@gmail.com if (timeout != 0) { 30711851Sbrandon.potter@amd.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 30810203SAli.Saidi@ARM.com "we'll wait indefinitely"); 30911851Sbrandon.potter@amd.com } 31011851Sbrandon.potter@amd.com 3119455Smitch.hayenga+gem5@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3129112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 31311906SBrandon.Potter@amd.com int mem_val = *((int *)buf); 31411906SBrandon.Potter@amd.com delete[] buf; 3159112Smarc.orr@gmail.com 3169112Smarc.orr@gmail.com if (val != mem_val) { 31711851Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3189112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3199112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 32011911SBrandon.Potter@amd.com } 3219112Smarc.orr@gmail.com 32211911SBrandon.Potter@amd.com // Queue the thread context 32311911SBrandon.Potter@amd.com std::list<ThreadContext *> * tcWaitList; 32411911SBrandon.Potter@amd.com if (futex_map.count(uaddr)) { 32511911SBrandon.Potter@amd.com tcWaitList = futex_map.find(uaddr)->second; 3269112Smarc.orr@gmail.com } else { 32711911SBrandon.Potter@amd.com tcWaitList = new std::list<ThreadContext *>(); 32811911SBrandon.Potter@amd.com futex_map.insert(std::pair< uint64_t, 32911911SBrandon.Potter@amd.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 33011911SBrandon.Potter@amd.com } 3319238Slluc.alvarez@bsc.es tcWaitList->push_back(tc); 3329112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 33311911SBrandon.Potter@amd.com "thread context\n"); 3349112Smarc.orr@gmail.com tc->suspend(); 33511911SBrandon.Potter@amd.com return 0; 33611911SBrandon.Potter@amd.com } else if (op == OS::TGT_FUTEX_WAKE){ 33711911SBrandon.Potter@amd.com int wokenUp = 0; 33811911SBrandon.Potter@amd.com std::list<ThreadContext *> * tcWaitList; 33911911SBrandon.Potter@amd.com if (futex_map.count(uaddr)) { 3409112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 34111911SBrandon.Potter@amd.com while (tcWaitList->size() > 0 && wokenUp < val) { 34211911SBrandon.Potter@amd.com tcWaitList->front()->activate(); 34311911SBrandon.Potter@amd.com tcWaitList->pop_front(); 34411911SBrandon.Potter@amd.com wokenUp++; 34511911SBrandon.Potter@amd.com } 34611911SBrandon.Potter@amd.com if (tcWaitList->empty()) { 3479112Smarc.orr@gmail.com futex_map.erase(uaddr); 3489112Smarc.orr@gmail.com delete tcWaitList; 34911911SBrandon.Potter@amd.com } 35011911SBrandon.Potter@amd.com } 3519112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 35211911SBrandon.Potter@amd.com "thread contexts\n", wokenUp); 35311911SBrandon.Potter@amd.com return wokenUp; 3549112Smarc.orr@gmail.com } else { 3559112Smarc.orr@gmail.com warn("sys_futex: op %d is not implemented, just returning...", op); 35611911SBrandon.Potter@amd.com return 0; 35711911SBrandon.Potter@amd.com } 3589112Smarc.orr@gmail.com 3599112Smarc.orr@gmail.com} 3602238SN/A 3612238SN/A 3622238SN/A/// Pseudo Funcs - These functions use a different return convension, 3632238SN/A/// returning a second value in a register other than the normal return register 36411851Sbrandon.potter@amd.comSyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3652238SN/A Process *process, ThreadContext *tc); 3662238SN/A 3672238SN/A/// Target getpidPseudo() handler. 36811851Sbrandon.potter@amd.comSyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3692238SN/A Process *p, ThreadContext *tc); 3702238SN/A 3712238SN/A/// Target getuidPseudo() handler. 37211851Sbrandon.potter@amd.comSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3732238SN/A Process *p, ThreadContext *tc); 3742238SN/A 3752238SN/A/// Target getgidPseudo() handler. 37611851Sbrandon.potter@amd.comSyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3772238SN/A Process *p, ThreadContext *tc); 3782238SN/A 3791354SN/A 3801354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 38110796Sbrandon.potter@amd.comconst int one_million = 1000000; 38210796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 3831354SN/Aconst int one_billion = 1000000000; 3841354SN/A 3851354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3861354SN/A/// by my reckoning. We want to keep this a constant (not use the 3871354SN/A/// real-world time) to keep simulations repeatable. 3881354SN/Aconst unsigned seconds_since_epoch = 1000000000; 3891354SN/A 3901354SN/A/// Helper function to convert current elapsed time to seconds and 3911354SN/A/// microseconds. 3921354SN/Atemplate <class T1, class T2> 39310796Sbrandon.potter@amd.comvoid 3941354SN/AgetElapsedTimeMicro(T1 &sec, T2 &usec) 39510796Sbrandon.potter@amd.com{ 3961354SN/A uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 3971354SN/A sec = elapsed_usecs / one_million; 3981354SN/A usec = elapsed_usecs % one_million; 3991354SN/A} 40010796Sbrandon.potter@amd.com 40110796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 40210796Sbrandon.potter@amd.com/// nanoseconds. 40310796Sbrandon.potter@amd.comtemplate <class T1, class T2> 40410796Sbrandon.potter@amd.comvoid 40510796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 40610796Sbrandon.potter@amd.com{ 40710796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 40810796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 40910796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 41010796Sbrandon.potter@amd.com} 411360SN/A 412360SN/A////////////////////////////////////////////////////////////////////// 413360SN/A// 414360SN/A// The following emulation functions are generic, but need to be 415360SN/A// templated to account for differences in types, constants, etc. 416360SN/A// 417360SN/A////////////////////////////////////////////////////////////////////// 41811759Sbrandon.potter@amd.com 4193113Sgblack@eecs.umich.edu typedef struct statfs hst_statfs; 4203113Sgblack@eecs.umich.edu#if NO_STAT64 4213113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4223113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4233113Sgblack@eecs.umich.edu#else 4243113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4253113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4263113Sgblack@eecs.umich.edu#endif 4273113Sgblack@eecs.umich.edu 4283113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4293113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4303113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4313113Sgblack@eecs.umich.edu 43212032Sandreas.sandberg@arm.comtemplate <typename target_stat, typename host_stat> 4333113Sgblack@eecs.umich.edustatic void 4343113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4354189Sgblack@eecs.umich.edu{ 4364189Sgblack@eecs.umich.edu using namespace TheISA; 4373113Sgblack@eecs.umich.edu 4383113Sgblack@eecs.umich.edu if (fakeTTY) 4393113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4403113Sgblack@eecs.umich.edu else 4418737Skoansin.tan@gmail.com tgt->st_dev = host->st_dev; 4423113Sgblack@eecs.umich.edu tgt->st_dev = TheISA::htog(tgt->st_dev); 4438737Skoansin.tan@gmail.com tgt->st_ino = host->st_ino; 4443277Sgblack@eecs.umich.edu tgt->st_ino = TheISA::htog(tgt->st_ino); 4455515SMichael.Adler@intel.com tgt->st_mode = host->st_mode; 4465515SMichael.Adler@intel.com if (fakeTTY) { 4475515SMichael.Adler@intel.com // Claim to be a character device 4485515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4495515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4508737Skoansin.tan@gmail.com } 4513277Sgblack@eecs.umich.edu tgt->st_mode = TheISA::htog(tgt->st_mode); 4528737Skoansin.tan@gmail.com tgt->st_nlink = host->st_nlink; 4533277Sgblack@eecs.umich.edu tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4548737Skoansin.tan@gmail.com tgt->st_uid = host->st_uid; 4553277Sgblack@eecs.umich.edu tgt->st_uid = TheISA::htog(tgt->st_uid); 4568737Skoansin.tan@gmail.com tgt->st_gid = host->st_gid; 4573113Sgblack@eecs.umich.edu tgt->st_gid = TheISA::htog(tgt->st_gid); 4583113Sgblack@eecs.umich.edu if (fakeTTY) 4593113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4603113Sgblack@eecs.umich.edu else 4618737Skoansin.tan@gmail.com tgt->st_rdev = host->st_rdev; 4623113Sgblack@eecs.umich.edu tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4638737Skoansin.tan@gmail.com tgt->st_size = host->st_size; 4643114Sgblack@eecs.umich.edu tgt->st_size = TheISA::htog(tgt->st_size); 4658737Skoansin.tan@gmail.com tgt->st_atimeX = host->st_atime; 4663114Sgblack@eecs.umich.edu tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4678737Skoansin.tan@gmail.com tgt->st_mtimeX = host->st_mtime; 4683114Sgblack@eecs.umich.edu tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4698737Skoansin.tan@gmail.com tgt->st_ctimeX = host->st_ctime; 47011906SBrandon.Potter@amd.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 4714061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4724061Sgblack@eecs.umich.edu // consistently across different hosts. 4738737Skoansin.tan@gmail.com tgt->st_blksize = 0x2000; 4743113Sgblack@eecs.umich.edu tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4758737Skoansin.tan@gmail.com tgt->st_blocks = host->st_blocks; 4763113Sgblack@eecs.umich.edu tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4773113Sgblack@eecs.umich.edu} 4783113Sgblack@eecs.umich.edu 4793113Sgblack@eecs.umich.edu// Same for stat64 4803113Sgblack@eecs.umich.edu 48112032Sandreas.sandberg@arm.comtemplate <typename target_stat, typename host_stat64> 4823113Sgblack@eecs.umich.edustatic void 4833113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4844189Sgblack@eecs.umich.edu{ 4854189Sgblack@eecs.umich.edu using namespace TheISA; 4863113Sgblack@eecs.umich.edu 4873113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4883113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4898737Skoansin.tan@gmail.com tgt->st_atime_nsec = host->st_atime_nsec; 4903113Sgblack@eecs.umich.edu tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 4918737Skoansin.tan@gmail.com tgt->st_mtime_nsec = host->st_mtime_nsec; 4923113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 4938737Skoansin.tan@gmail.com tgt->st_ctime_nsec = host->st_ctime_nsec; 4943113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 4953113Sgblack@eecs.umich.edu#else 4963113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 4973113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 4983113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 4993113Sgblack@eecs.umich.edu#endif 5003113Sgblack@eecs.umich.edu} 50111906SBrandon.Potter@amd.com 5023113Sgblack@eecs.umich.edu//Here are a couple convenience functions 50312032Sandreas.sandberg@arm.comtemplate<class OS> 5048852Sandreas.hansson@arm.comstatic void 50511906SBrandon.Potter@amd.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5063113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5073113Sgblack@eecs.umich.edu{ 5083113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5093113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5103113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5113113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5123113Sgblack@eecs.umich.edu} 5133113Sgblack@eecs.umich.edu 51412032Sandreas.sandberg@arm.comtemplate<class OS> 5158852Sandreas.hansson@arm.comstatic void 51611906SBrandon.Potter@amd.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5173113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5183113Sgblack@eecs.umich.edu{ 5193113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5206686Stjones1@inf.ed.ac.uk tgt_stat_buf tgt(addr); 5213113Sgblack@eecs.umich.edu convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5223113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5233113Sgblack@eecs.umich.edu} 52411759Sbrandon.potter@amd.com 52512032Sandreas.sandberg@arm.comtemplate <class OS> 52611759Sbrandon.potter@amd.comstatic void 52711759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 52811759Sbrandon.potter@amd.com hst_statfs *host) 52911759Sbrandon.potter@amd.com{ 53011759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 53111812Sbaz21@cam.ac.uk 53211812Sbaz21@cam.ac.uk tgt->f_type = TheISA::htog(host->f_type); 53311812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 53411759Sbrandon.potter@amd.com tgt->f_bsize = TheISA::htog(host->f_iosize); 53511812Sbaz21@cam.ac.uk#else 53611759Sbrandon.potter@amd.com tgt->f_bsize = TheISA::htog(host->f_bsize); 53711759Sbrandon.potter@amd.com#endif 53811759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 53911759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 54011759Sbrandon.potter@amd.com tgt->f_bavail = TheISA::htog(host->f_bavail); 54111759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 54211759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 54311812Sbaz21@cam.ac.uk memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 54411812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 54511812Sbaz21@cam.ac.uk tgt->f_namelen = TheISA::htog(host->f_namemax); 54611812Sbaz21@cam.ac.uk tgt->f_frsize = TheISA::htog(host->f_bsize); 54711812Sbaz21@cam.ac.uk#elif defined(__APPLE__) 54811812Sbaz21@cam.ac.uk tgt->f_namelen = 0; 54911812Sbaz21@cam.ac.uk tgt->f_frsize = 0; 55011759Sbrandon.potter@amd.com#else 55111759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 55211812Sbaz21@cam.ac.uk tgt->f_frsize = TheISA::htog(host->f_frsize); 55311812Sbaz21@cam.ac.uk#endif 55411759Sbrandon.potter@amd.com#if defined(__linux__) 55511812Sbaz21@cam.ac.uk memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 55611812Sbaz21@cam.ac.uk#else 55711812Sbaz21@cam.ac.uk /* 55811812Sbaz21@cam.ac.uk * The fields are different sizes per OS. Don't bother with 55911812Sbaz21@cam.ac.uk * f_spare or f_reserved on non-Linux for now. 56011812Sbaz21@cam.ac.uk */ 56111812Sbaz21@cam.ac.uk memset(&tgt->f_spare, 0, sizeof(tgt->f_spare)); 56211759Sbrandon.potter@amd.com#endif 56311759Sbrandon.potter@amd.com 56411759Sbrandon.potter@amd.com tgt.copyOut(mem); 56511759Sbrandon.potter@amd.com} 566378SN/A 567378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 5689141Smarc.orr@gmail.com/// only to find out if their stdout is a tty, to determine whether to 5699141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 570360SN/A/// not TTYs to provide repeatable results. 5711450SN/Atemplate <class OS> 57211856Sbrandon.potter@amd.comSyscallReturn 573360SN/AioctlFunc(SyscallDesc *desc, int callnum, Process *process, 5746701Sgblack@eecs.umich.edu ThreadContext *tc) 57511856Sbrandon.potter@amd.com{ 57611856Sbrandon.potter@amd.com int index = 0; 577360SN/A int tgt_fd = process->getSyscallArg(tc, index); 57810930Sbrandon.potter@amd.com unsigned req = process->getSyscallArg(tc, index); 579360SN/A 58011856Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 58111856Sbrandon.potter@amd.com 58210496Ssteve.reinhardt@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 58311856Sbrandon.potter@amd.com 58411856Sbrandon.potter@amd.com if (fde == NULL) { 5851458SN/A // doesn't map to any simulator fd: not a valid target fd 586360SN/A return -EBADF; 58711856Sbrandon.potter@amd.com } 58811856Sbrandon.potter@amd.com 58911856Sbrandon.potter@amd.com if (fde->driver != NULL) { 59011856Sbrandon.potter@amd.com return fde->driver->ioctl(process, tc, req); 59111856Sbrandon.potter@amd.com } 59211856Sbrandon.potter@amd.com 59311856Sbrandon.potter@amd.com if (OS::isTtyReq(req)) { 59411856Sbrandon.potter@amd.com return -ENOTTY; 59510496Ssteve.reinhardt@amd.com } 59611856Sbrandon.potter@amd.com 59711856Sbrandon.potter@amd.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 59811856Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 59911856Sbrandon.potter@amd.com return -ENOTTY; 60011856Sbrandon.potter@amd.com} 60110930Sbrandon.potter@amd.com 6029141Smarc.orr@gmail.comtemplate <class OS> 603360SN/Astatic SyscallReturn 604360SN/AopenFunc(SyscallDesc *desc, int callnum, Process *process, 605360SN/A ThreadContext *tc, int index) 60611907SBrandon.Potter@amd.com{ 60711907SBrandon.Potter@amd.com std::string path; 60811907SBrandon.Potter@amd.com 609360SN/A if (!tc->getMemProxy().tryReadString(path, 61011907SBrandon.Potter@amd.com process->getSyscallArg(tc, index))) 61111907SBrandon.Potter@amd.com return -EFAULT; 61211907SBrandon.Potter@amd.com 61311907SBrandon.Potter@amd.com int tgtFlags = process->getSyscallArg(tc, index); 61411907SBrandon.Potter@amd.com int mode = process->getSyscallArg(tc, index); 61511907SBrandon.Potter@amd.com int hostFlags = 0; 61611907SBrandon.Potter@amd.com 61711907SBrandon.Potter@amd.com // translate open flags 61811907SBrandon.Potter@amd.com for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 61911907SBrandon.Potter@amd.com if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 62011907SBrandon.Potter@amd.com tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 62111907SBrandon.Potter@amd.com hostFlags |= OS::openFlagTable[i].hostFlag; 62211907SBrandon.Potter@amd.com } 62311907SBrandon.Potter@amd.com } 624360SN/A 62511907SBrandon.Potter@amd.com // any target flags left? 6261458SN/A if (tgtFlags != 0) 627360SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 62811907SBrandon.Potter@amd.com 62911907SBrandon.Potter@amd.com#ifdef __CYGWIN32__ 63011907SBrandon.Potter@amd.com hostFlags |= O_BINARY; 63111907SBrandon.Potter@amd.com#endif 63211907SBrandon.Potter@amd.com 63311907SBrandon.Potter@amd.com // Adjust path for current working directory 63411907SBrandon.Potter@amd.com path = process->fullPath(path); 63511907SBrandon.Potter@amd.com 63611907SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 63711907SBrandon.Potter@amd.com 638360SN/A if (startswith(path, "/dev/")) { 63911907SBrandon.Potter@amd.com std::string filename = path.substr(strlen("/dev/")); 64011907SBrandon.Potter@amd.com if (filename == "sysdev0") { 64111907SBrandon.Potter@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 642360SN/A // We don't support it, so just punt. 643360SN/A warn("Ignoring open(%s, ...)\n", path); 64411907SBrandon.Potter@amd.com return -ENOENT; 64511907SBrandon.Potter@amd.com } 64611907SBrandon.Potter@amd.com 64711907SBrandon.Potter@amd.com EmulatedDriver *drv = process->findDriver(filename); 648360SN/A if (drv != NULL) { 64911907SBrandon.Potter@amd.com // the driver's open method will allocate a fd from the 650360SN/A // process if necessary. 651360SN/A return drv->open(process, tc, mode, hostFlags); 65211907SBrandon.Potter@amd.com } 6533669Sbinkertn@umich.edu 65411907SBrandon.Potter@amd.com // fall through here for pass through to host devices, such as 65511907SBrandon.Potter@amd.com // /dev/zero 65611907SBrandon.Potter@amd.com } 65711907SBrandon.Potter@amd.com 65811907SBrandon.Potter@amd.com int fd; 65911907SBrandon.Potter@amd.com int local_errno; 66011907SBrandon.Potter@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 66111907SBrandon.Potter@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 66211907SBrandon.Potter@amd.com // It's a proc/sys entry and requires special handling 66311907SBrandon.Potter@amd.com fd = OS::openSpecialFile(path, process, tc); 66411907SBrandon.Potter@amd.com local_errno = ENOENT; 66511907SBrandon.Potter@amd.com } else { 66611907SBrandon.Potter@amd.com // open the file 66711907SBrandon.Potter@amd.com fd = open(path.c_str(), hostFlags, mode); 66811907SBrandon.Potter@amd.com local_errno = errno; 66911907SBrandon.Potter@amd.com } 67011907SBrandon.Potter@amd.com 67111907SBrandon.Potter@amd.com if (fd == -1) 67211907SBrandon.Potter@amd.com return -local_errno; 67311907SBrandon.Potter@amd.com 67411907SBrandon.Potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 6751706SN/A} 67611907SBrandon.Potter@amd.com 67711907SBrandon.Potter@amd.com/// Target open() handler. 67811907SBrandon.Potter@amd.comtemplate <class OS> 67911907SBrandon.Potter@amd.comSyscallReturn 68011907SBrandon.Potter@amd.comopenFunc(SyscallDesc *desc, int callnum, Process *process, 68111907SBrandon.Potter@amd.com ThreadContext *tc) 68210496Ssteve.reinhardt@amd.com{ 68310496Ssteve.reinhardt@amd.com return openFunc<OS>(desc, callnum, process, tc, 0); 68411907SBrandon.Potter@amd.com} 68511907SBrandon.Potter@amd.com 68611907SBrandon.Potter@amd.com/// Target openat() handler. 68711907SBrandon.Potter@amd.comtemplate <class OS> 68811907SBrandon.Potter@amd.comSyscallReturn 68911907SBrandon.Potter@amd.comopenatFunc(SyscallDesc *desc, int callnum, Process *process, 69010496Ssteve.reinhardt@amd.com ThreadContext *tc) 69111907SBrandon.Potter@amd.com{ 69211907SBrandon.Potter@amd.com int index = 0; 69311907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 69411907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 69510496Ssteve.reinhardt@amd.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 69610496Ssteve.reinhardt@amd.com return openFunc<OS>(desc, callnum, process, tc, 1); 69711907SBrandon.Potter@amd.com} 69811907SBrandon.Potter@amd.com 69911907SBrandon.Potter@amd.com/// Target unlinkat() handler. 70011907SBrandon.Potter@amd.comtemplate <class OS> 70111907SBrandon.Potter@amd.comSyscallReturn 70211907SBrandon.Potter@amd.comunlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 70311907SBrandon.Potter@amd.com ThreadContext *tc) 70411907SBrandon.Potter@amd.com{ 70511907SBrandon.Potter@amd.com int index = 0; 70611907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 70711907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 70811907SBrandon.Potter@amd.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 70911907SBrandon.Potter@amd.com 71011907SBrandon.Potter@amd.com return unlinkHelper(desc, callnum, process, tc, 1); 71111907SBrandon.Potter@amd.com} 71211907SBrandon.Potter@amd.com 71311907SBrandon.Potter@amd.com/// Target facessat() handler 71411907SBrandon.Potter@amd.comtemplate <class OS> 71511907SBrandon.Potter@amd.comSyscallReturn 71611907SBrandon.Potter@amd.comfaccessatFunc(SyscallDesc *desc, int callnum, Process *process, 71711907SBrandon.Potter@amd.com ThreadContext *tc) 71811907SBrandon.Potter@amd.com{ 71911907SBrandon.Potter@amd.com int index = 0; 72011907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 72111907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 722360SN/A warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 72311907SBrandon.Potter@amd.com return accessFunc(desc, callnum, process, tc, 1); 72411907SBrandon.Potter@amd.com} 72511907SBrandon.Potter@amd.com 72611907SBrandon.Potter@amd.com/// Target readlinkat() handler 72711907SBrandon.Potter@amd.comtemplate <class OS> 72811907SBrandon.Potter@amd.comSyscallReturn 72911907SBrandon.Potter@amd.comreadlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 73011907SBrandon.Potter@amd.com ThreadContext *tc) 73111907SBrandon.Potter@amd.com{ 73211907SBrandon.Potter@amd.com int index = 0; 73311907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 73411907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 73511907SBrandon.Potter@amd.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 736360SN/A return readlinkFunc(desc, callnum, process, tc, 1); 737360SN/A} 73810027SChris.Adeniyi-Jones@arm.com 73910027SChris.Adeniyi-Jones@arm.com/// Target renameat() handler. 74010027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 74111851Sbrandon.potter@amd.comSyscallReturn 74210027SChris.Adeniyi-Jones@arm.comrenameatFunc(SyscallDesc *desc, int callnum, Process *process, 74310027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 74411907SBrandon.Potter@amd.com{ 74510027SChris.Adeniyi-Jones@arm.com int index = 0; 74610027SChris.Adeniyi-Jones@arm.com 74710027SChris.Adeniyi-Jones@arm.com int olddirfd = process->getSyscallArg(tc, index); 74810027SChris.Adeniyi-Jones@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 74910027SChris.Adeniyi-Jones@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 75011851Sbrandon.potter@amd.com 75111851Sbrandon.potter@amd.com std::string old_name; 75210027SChris.Adeniyi-Jones@arm.com 75311907SBrandon.Potter@amd.com if (!tc->getMemProxy().tryReadString(old_name, 75410027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 75510027SChris.Adeniyi-Jones@arm.com return -EFAULT; 75610633Smichaelupton@gmail.com 75710633Smichaelupton@gmail.com int newdirfd = process->getSyscallArg(tc, index); 75810633Smichaelupton@gmail.com if (newdirfd != OS::TGT_AT_FDCWD) 75911851Sbrandon.potter@amd.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 76010633Smichaelupton@gmail.com 76110633Smichaelupton@gmail.com std::string new_name; 76210633Smichaelupton@gmail.com 76310633Smichaelupton@gmail.com if (!tc->getMemProxy().tryReadString(new_name, 76410633Smichaelupton@gmail.com process->getSyscallArg(tc, index))) 76510633Smichaelupton@gmail.com return -EFAULT; 76610633Smichaelupton@gmail.com 76710633Smichaelupton@gmail.com // Adjust path for current working directory 76810633Smichaelupton@gmail.com old_name = process->fullPath(old_name); 76910633Smichaelupton@gmail.com new_name = process->fullPath(new_name); 77010203SAli.Saidi@ARM.com 77110203SAli.Saidi@ARM.com int result = rename(old_name.c_str(), new_name.c_str()); 77210203SAli.Saidi@ARM.com return (result == -1) ? -errno : result; 77311851Sbrandon.potter@amd.com} 77411851Sbrandon.potter@amd.com 77510203SAli.Saidi@ARM.com/// Target sysinfo() handler. 77610203SAli.Saidi@ARM.comtemplate <class OS> 77710203SAli.Saidi@ARM.comSyscallReturn 77810203SAli.Saidi@ARM.comsysinfoFunc(SyscallDesc *desc, int callnum, Process *process, 77910203SAli.Saidi@ARM.com ThreadContext *tc) 78010203SAli.Saidi@ARM.com{ 78110203SAli.Saidi@ARM.com 78210203SAli.Saidi@ARM.com int index = 0; 78310203SAli.Saidi@ARM.com TypedBufferArg<typename OS::tgt_sysinfo> 78410203SAli.Saidi@ARM.com sysinfo(process->getSyscallArg(tc, index)); 78510203SAli.Saidi@ARM.com 78611851Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 78711851Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 78810203SAli.Saidi@ARM.com sysinfo->mem_unit = 1; 78910203SAli.Saidi@ARM.com 79010203SAli.Saidi@ARM.com sysinfo.copyOut(tc->getMemProxy()); 79110203SAli.Saidi@ARM.com 79210203SAli.Saidi@ARM.com return 0; 79310203SAli.Saidi@ARM.com} 79410203SAli.Saidi@ARM.com 79510203SAli.Saidi@ARM.com/// Target chmod() handler. 79610850SGiacomo.Gabrielli@arm.comtemplate <class OS> 79710850SGiacomo.Gabrielli@arm.comSyscallReturn 79810850SGiacomo.Gabrielli@arm.comchmodFunc(SyscallDesc *desc, int callnum, Process *process, 79911851Sbrandon.potter@amd.com ThreadContext *tc) 80010850SGiacomo.Gabrielli@arm.com{ 80110850SGiacomo.Gabrielli@arm.com std::string path; 80210850SGiacomo.Gabrielli@arm.com 80310850SGiacomo.Gabrielli@arm.com int index = 0; 80410850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(path, 80510850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) { 80610850SGiacomo.Gabrielli@arm.com return -EFAULT; 80710850SGiacomo.Gabrielli@arm.com } 80810850SGiacomo.Gabrielli@arm.com 80910850SGiacomo.Gabrielli@arm.com uint32_t mode = process->getSyscallArg(tc, index); 81010850SGiacomo.Gabrielli@arm.com mode_t hostMode = 0; 81110850SGiacomo.Gabrielli@arm.com 81210850SGiacomo.Gabrielli@arm.com // XXX translate mode flags via OS::something??? 81310850SGiacomo.Gabrielli@arm.com hostMode = mode; 81410850SGiacomo.Gabrielli@arm.com 81510850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 81610850SGiacomo.Gabrielli@arm.com path = process->fullPath(path); 81710850SGiacomo.Gabrielli@arm.com 81810850SGiacomo.Gabrielli@arm.com // do the chmod 81910850SGiacomo.Gabrielli@arm.com int result = chmod(path.c_str(), hostMode); 82010850SGiacomo.Gabrielli@arm.com if (result < 0) 82110850SGiacomo.Gabrielli@arm.com return -errno; 82210850SGiacomo.Gabrielli@arm.com 82310850SGiacomo.Gabrielli@arm.com return 0; 82410850SGiacomo.Gabrielli@arm.com} 82510850SGiacomo.Gabrielli@arm.com 82610850SGiacomo.Gabrielli@arm.com 82710850SGiacomo.Gabrielli@arm.com/// Target fchmod() handler. 82810850SGiacomo.Gabrielli@arm.comtemplate <class OS> 82910850SGiacomo.Gabrielli@arm.comSyscallReturn 83010850SGiacomo.Gabrielli@arm.comfchmodFunc(SyscallDesc *desc, int callnum, Process *process, 83110850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 8326640Svince@csl.cornell.edu{ 8336640Svince@csl.cornell.edu int index = 0; 8346640Svince@csl.cornell.edu int tgt_fd = process->getSyscallArg(tc, index); 83511851Sbrandon.potter@amd.com uint32_t mode = process->getSyscallArg(tc, index); 83611851Sbrandon.potter@amd.com 8376640Svince@csl.cornell.edu int sim_fd = process->getSimFD(tgt_fd); 8386640Svince@csl.cornell.edu if (sim_fd < 0) 8396701Sgblack@eecs.umich.edu return -EBADF; 8406701Sgblack@eecs.umich.edu 84110793Sbrandon.potter@amd.com mode_t hostMode = 0; 8426640Svince@csl.cornell.edu 84311758Sbrandon.potter@amd.com // XXX translate mode flags via OS::someting??? 84411758Sbrandon.potter@amd.com hostMode = mode; 84511758Sbrandon.potter@amd.com 8466640Svince@csl.cornell.edu // do the fchmod 8478706Sandreas.hansson@arm.com int result = fchmod(sim_fd, hostMode); 8486640Svince@csl.cornell.edu if (result < 0) 8496701Sgblack@eecs.umich.edu return -errno; 8506640Svince@csl.cornell.edu 851360SN/A return 0; 8521999SN/A} 8531999SN/A 8541999SN/A/// Target mremap() handler. 85511851Sbrandon.potter@amd.comtemplate <class OS> 8562680Sktlim@umich.eduSyscallReturn 8571999SN/AmremapFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 8581999SN/A{ 8591999SN/A int index = 0; 8606701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8618852Sandreas.hansson@arm.com uint64_t old_length = process->getSyscallArg(tc, index); 8626701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8631999SN/A uint64_t flags = process->getSyscallArg(tc, index); 8646701Sgblack@eecs.umich.edu uint64_t provided_address = 0; 8651999SN/A bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 8666701Sgblack@eecs.umich.edu 8671999SN/A if (use_provided_address) 8681999SN/A provided_address = process->getSyscallArg(tc, index); 8691999SN/A 8701999SN/A if ((start % TheISA::PageBytes != 0) || 8711999SN/A (provided_address % TheISA::PageBytes != 0)) { 8723669Sbinkertn@umich.edu warn("mremap failing: arguments not page aligned"); 8733669Sbinkertn@umich.edu return -EINVAL; 8743669Sbinkertn@umich.edu } 8751999SN/A 8761999SN/A new_length = roundUp(new_length, TheISA::PageBytes); 8771999SN/A 8782218SN/A if (new_length > old_length) { 8791999SN/A if ((start + old_length) == process->mmap_end && 8801999SN/A (!use_provided_address || provided_address == start)) { 8811999SN/A uint64_t diff = new_length - old_length; 8821999SN/A process->allocateMem(process->mmap_end, diff); 8831999SN/A process->mmap_end += diff; 8841999SN/A return start; 8851999SN/A } else { 8861999SN/A if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 88711856Sbrandon.potter@amd.com warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8881999SN/A return -ENOMEM; 8896701Sgblack@eecs.umich.edu } else { 89011856Sbrandon.potter@amd.com uint64_t new_start = use_provided_address ? 89111856Sbrandon.potter@amd.com provided_address : process->mmap_end; 89210931Sbrandon.potter@amd.com process->pTable->remap(start, old_length, new_start); 89311856Sbrandon.potter@amd.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 89411856Sbrandon.potter@amd.com new_start, new_start + new_length, 8951999SN/A new_length - old_length); 89611856Sbrandon.potter@amd.com // add on the remaining unallocated pages 8971999SN/A process->allocateMem(new_start + old_length, 89811856Sbrandon.potter@amd.com new_length - old_length, 8991999SN/A use_provided_address /* clobber */); 90011856Sbrandon.potter@amd.com if (!use_provided_address) 9011999SN/A process->mmap_end += new_length; 90211856Sbrandon.potter@amd.com if (use_provided_address && 9031999SN/A new_start + new_length > process->mmap_end) { 9041999SN/A // something fishy going on here, at least notify the user 9055877Shsul@eecs.umich.edu // @todo: increase mmap_end? 9065877Shsul@eecs.umich.edu warn("mmap region limit exceeded with MREMAP_FIXED\n"); 9075877Shsul@eecs.umich.edu } 90811851Sbrandon.potter@amd.com warn("returning %08p as start\n", new_start); 9095877Shsul@eecs.umich.edu return new_start; 9106701Sgblack@eecs.umich.edu } 9116701Sgblack@eecs.umich.edu } 9126701Sgblack@eecs.umich.edu } else { 9136701Sgblack@eecs.umich.edu if (use_provided_address && provided_address != start) 9146701Sgblack@eecs.umich.edu process->pTable->remap(start, new_length, provided_address); 91510027SChris.Adeniyi-Jones@arm.com process->pTable->unmap(start + new_length, old_length - new_length); 91610027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 91710027SChris.Adeniyi-Jones@arm.com } 91810027SChris.Adeniyi-Jones@arm.com} 91910027SChris.Adeniyi-Jones@arm.com 9205877Shsul@eecs.umich.edu/// Target stat() handler. 92110318Sandreas.hansson@arm.comtemplate <class OS> 92210318Sandreas.hansson@arm.comSyscallReturn 9235877Shsul@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, Process *process, 9245877Shsul@eecs.umich.edu ThreadContext *tc) 9255877Shsul@eecs.umich.edu{ 9265877Shsul@eecs.umich.edu std::string path; 92710486Stjablin@gmail.com 92810486Stjablin@gmail.com int index = 0; 9295877Shsul@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 93011905SBrandon.Potter@amd.com process->getSyscallArg(tc, index))) { 93111905SBrandon.Potter@amd.com return -EFAULT; 93211905SBrandon.Potter@amd.com } 93311905SBrandon.Potter@amd.com Addr bufPtr = process->getSyscallArg(tc, index); 93410027SChris.Adeniyi-Jones@arm.com 93512206Srico.amslinger@informatik.uni-augsburg.de // Adjust path for current working directory 93612206Srico.amslinger@informatik.uni-augsburg.de path = process->fullPath(path); 9375877Shsul@eecs.umich.edu 93811905SBrandon.Potter@amd.com struct stat hostBuf; 93911905SBrandon.Potter@amd.com int result = stat(path.c_str(), &hostBuf); 9405877Shsul@eecs.umich.edu 9415877Shsul@eecs.umich.edu if (result < 0) 94210027SChris.Adeniyi-Jones@arm.com return -errno; 9435877Shsul@eecs.umich.edu 9445877Shsul@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9455877Shsul@eecs.umich.edu 94612206Srico.amslinger@informatik.uni-augsburg.de return 0; 94712206Srico.amslinger@informatik.uni-augsburg.de} 94812206Srico.amslinger@informatik.uni-augsburg.de 94912206Srico.amslinger@informatik.uni-augsburg.de 95012206Srico.amslinger@informatik.uni-augsburg.de/// Target stat64() handler. 95112206Srico.amslinger@informatik.uni-augsburg.detemplate <class OS> 95212206Srico.amslinger@informatik.uni-augsburg.deSyscallReturn 95312206Srico.amslinger@informatik.uni-augsburg.destat64Func(SyscallDesc *desc, int callnum, Process *process, 95412206Srico.amslinger@informatik.uni-augsburg.de ThreadContext *tc) 95510027SChris.Adeniyi-Jones@arm.com{ 95610027SChris.Adeniyi-Jones@arm.com std::string path; 95710027SChris.Adeniyi-Jones@arm.com 95810027SChris.Adeniyi-Jones@arm.com int index = 0; 9595877Shsul@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 96010027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 96110027SChris.Adeniyi-Jones@arm.com return -EFAULT; 96210027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 96310027SChris.Adeniyi-Jones@arm.com 96412206Srico.amslinger@informatik.uni-augsburg.de // Adjust path for current working directory 96512206Srico.amslinger@informatik.uni-augsburg.de path = process->fullPath(path); 96612206Srico.amslinger@informatik.uni-augsburg.de 96712206Srico.amslinger@informatik.uni-augsburg.de#if NO_STAT64 96810027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 96910027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 97010027SChris.Adeniyi-Jones@arm.com#else 97110027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 97210027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 97310027SChris.Adeniyi-Jones@arm.com#endif 9745877Shsul@eecs.umich.edu 9755877Shsul@eecs.umich.edu if (result < 0) 9765877Shsul@eecs.umich.edu return -errno; 97710027SChris.Adeniyi-Jones@arm.com 97810027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9798601Ssteve.reinhardt@amd.com 98010027SChris.Adeniyi-Jones@arm.com return 0; 9815877Shsul@eecs.umich.edu} 9825877Shsul@eecs.umich.edu 9831999SN/A 984378SN/A/// Target fstatat64() handler. 985360SN/Atemplate <class OS> 9861450SN/ASyscallReturn 98711851Sbrandon.potter@amd.comfstatat64Func(SyscallDesc *desc, int callnum, Process *process, 9882680Sktlim@umich.edu ThreadContext *tc) 989360SN/A{ 990360SN/A int index = 0; 991360SN/A int dirfd = process->getSyscallArg(tc, index); 9926701Sgblack@eecs.umich.edu if (dirfd != OS::TGT_AT_FDCWD) 9938852Sandreas.hansson@arm.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 9946701Sgblack@eecs.umich.edu 9956701Sgblack@eecs.umich.edu std::string path; 9966701Sgblack@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 9976701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 998360SN/A return -EFAULT; 9993669Sbinkertn@umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10003669Sbinkertn@umich.edu 10013669Sbinkertn@umich.edu // Adjust path for current working directory 1002360SN/A path = process->fullPath(path); 1003360SN/A 1004360SN/A#if NO_STAT64 1005360SN/A struct stat hostBuf; 10062218SN/A int result = stat(path.c_str(), &hostBuf); 1007360SN/A#else 10088706Sandreas.hansson@arm.com struct stat64 hostBuf; 1009360SN/A int result = stat64(path.c_str(), &hostBuf); 10101458SN/A#endif 1011360SN/A 1012360SN/A if (result < 0) 1013360SN/A return -errno; 10145074Ssaidi@eecs.umich.edu 10155074Ssaidi@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10165074Ssaidi@eecs.umich.edu 101711851Sbrandon.potter@amd.com return 0; 10185074Ssaidi@eecs.umich.edu} 10195074Ssaidi@eecs.umich.edu 10205074Ssaidi@eecs.umich.edu 10215074Ssaidi@eecs.umich.edu/// Target fstat64() handler. 10226701Sgblack@eecs.umich.edutemplate <class OS> 10238852Sandreas.hansson@arm.comSyscallReturn 10246701Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, Process *process, 10255074Ssaidi@eecs.umich.edu ThreadContext *tc) 10266701Sgblack@eecs.umich.edu{ 10275074Ssaidi@eecs.umich.edu int index = 0; 10285074Ssaidi@eecs.umich.edu int tgt_fd = process->getSyscallArg(tc, index); 10295074Ssaidi@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10305074Ssaidi@eecs.umich.edu 10315208Ssaidi@eecs.umich.edu int sim_fd = process->getSimFD(tgt_fd); 10325208Ssaidi@eecs.umich.edu if (sim_fd < 0) 10335208Ssaidi@eecs.umich.edu return -EBADF; 10345208Ssaidi@eecs.umich.edu 10355074Ssaidi@eecs.umich.edu#if NO_STAT64 10365074Ssaidi@eecs.umich.edu struct stat hostBuf; 10375208Ssaidi@eecs.umich.edu int result = fstat(sim_fd, &hostBuf); 10385074Ssaidi@eecs.umich.edu#else 10395074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 10405074Ssaidi@eecs.umich.edu int result = fstat64(sim_fd, &hostBuf); 10415074Ssaidi@eecs.umich.edu#endif 10428706Sandreas.hansson@arm.com 10435074Ssaidi@eecs.umich.edu if (result < 0) 10445074Ssaidi@eecs.umich.edu return -errno; 10455074Ssaidi@eecs.umich.edu 10465074Ssaidi@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10475074Ssaidi@eecs.umich.edu 104810027SChris.Adeniyi-Jones@arm.com return 0; 104910027SChris.Adeniyi-Jones@arm.com} 105010027SChris.Adeniyi-Jones@arm.com 105111851Sbrandon.potter@amd.com 105210027SChris.Adeniyi-Jones@arm.com/// Target lstat() handler. 105310027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 105410027SChris.Adeniyi-Jones@arm.comSyscallReturn 105510027SChris.Adeniyi-Jones@arm.comlstatFunc(SyscallDesc *desc, int callnum, Process *process, 105610027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 105710793Sbrandon.potter@amd.com{ 105810027SChris.Adeniyi-Jones@arm.com std::string path; 105910027SChris.Adeniyi-Jones@arm.com 106010027SChris.Adeniyi-Jones@arm.com int index = 0; 106110027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 106210027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) { 106310027SChris.Adeniyi-Jones@arm.com return -EFAULT; 106410027SChris.Adeniyi-Jones@arm.com } 106510027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 106610027SChris.Adeniyi-Jones@arm.com 106710027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 106810027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 106910027SChris.Adeniyi-Jones@arm.com 107010027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 107110027SChris.Adeniyi-Jones@arm.com int result = lstat(path.c_str(), &hostBuf); 107210027SChris.Adeniyi-Jones@arm.com 107310027SChris.Adeniyi-Jones@arm.com if (result < 0) 107410027SChris.Adeniyi-Jones@arm.com return -errno; 107510027SChris.Adeniyi-Jones@arm.com 107610027SChris.Adeniyi-Jones@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 107710027SChris.Adeniyi-Jones@arm.com 107810027SChris.Adeniyi-Jones@arm.com return 0; 107910027SChris.Adeniyi-Jones@arm.com} 108010027SChris.Adeniyi-Jones@arm.com 108110027SChris.Adeniyi-Jones@arm.com/// Target lstat64() handler. 108210027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 108310027SChris.Adeniyi-Jones@arm.comSyscallReturn 108410027SChris.Adeniyi-Jones@arm.comlstat64Func(SyscallDesc *desc, int callnum, Process *process, 10851999SN/A ThreadContext *tc) 10861999SN/A{ 10871999SN/A std::string path; 108811856Sbrandon.potter@amd.com 10891999SN/A int index = 0; 10906701Sgblack@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 109111856Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 109211856Sbrandon.potter@amd.com return -EFAULT; 109310931Sbrandon.potter@amd.com } 109411856Sbrandon.potter@amd.com Addr bufPtr = process->getSyscallArg(tc, index); 109511856Sbrandon.potter@amd.com 10961999SN/A // Adjust path for current working directory 109711856Sbrandon.potter@amd.com path = process->fullPath(path); 10981999SN/A 10992764Sstever@eecs.umich.edu#if NO_STAT64 11002064SN/A struct stat hostBuf; 110110931Sbrandon.potter@amd.com int result = lstat(path.c_str(), &hostBuf); 11022064SN/A#else 11032064SN/A struct stat64 hostBuf; 110410931Sbrandon.potter@amd.com int result = lstat64(path.c_str(), &hostBuf); 11052064SN/A#endif 11061999SN/A 11071999SN/A if (result < 0) 11082218SN/A return -errno; 11091999SN/A 111010931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11111999SN/A 11121999SN/A return 0; 11131999SN/A} 11141999SN/A 11151999SN/A/// Target fstat() handler. 1116378SN/Atemplate <class OS> 1117360SN/ASyscallReturn 11181450SN/AfstatFunc(SyscallDesc *desc, int callnum, Process *process, 111911851Sbrandon.potter@amd.com ThreadContext *tc) 11202680Sktlim@umich.edu{ 1121360SN/A int index = 0; 1122360SN/A int tgt_fd = process->getSyscallArg(tc, index); 1123360SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11246701Sgblack@eecs.umich.edu 11258852Sandreas.hansson@arm.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 11266701Sgblack@eecs.umich.edu 11276701Sgblack@eecs.umich.edu int sim_fd = process->getSimFD(tgt_fd); 11286701Sgblack@eecs.umich.edu if (sim_fd < 0) 11296701Sgblack@eecs.umich.edu return -EBADF; 1130360SN/A 11313669Sbinkertn@umich.edu struct stat hostBuf; 11323669Sbinkertn@umich.edu int result = fstat(sim_fd, &hostBuf); 11333669Sbinkertn@umich.edu 1134360SN/A if (result < 0) 1135360SN/A return -errno; 1136360SN/A 1137360SN/A copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11381458SN/A 1139360SN/A return 0; 11408706Sandreas.hansson@arm.com} 1141360SN/A 11421458SN/A 1143360SN/A/// Target statfs() handler. 1144360SN/Atemplate <class OS> 11451999SN/ASyscallReturn 11461999SN/AstatfsFunc(SyscallDesc *desc, int callnum, Process *process, 11471999SN/A ThreadContext *tc) 114811851Sbrandon.potter@amd.com{ 11492680Sktlim@umich.edu#if NO_STATFS 11501999SN/A warn("Host OS cannot support calls to statfs. Ignoring syscall"); 11511999SN/A#else 11521999SN/A std::string path; 11536701Sgblack@eecs.umich.edu 11548852Sandreas.hansson@arm.com int index = 0; 11556701Sgblack@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 11566701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11576701Sgblack@eecs.umich.edu return -EFAULT; 11586701Sgblack@eecs.umich.edu } 11591999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11603669Sbinkertn@umich.edu 11613669Sbinkertn@umich.edu // Adjust path for current working directory 11623669Sbinkertn@umich.edu path = process->fullPath(path); 11632764Sstever@eecs.umich.edu 11642064SN/A struct statfs hostBuf; 11652064SN/A int result = statfs(path.c_str(), &hostBuf); 11662064SN/A 11671999SN/A if (result < 0) 11681999SN/A return -errno; 11692064SN/A 11701999SN/A copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11711999SN/A#endif 11721999SN/A return 0; 11731999SN/A} 11748706Sandreas.hansson@arm.com 11751999SN/A 11761999SN/A/// Target fstatfs() handler. 11771999SN/Atemplate <class OS> 11781999SN/ASyscallReturn 1179378SN/AfstatfsFunc(SyscallDesc *desc, int callnum, Process *process, 1180360SN/A ThreadContext *tc) 11811450SN/A{ 118211856Sbrandon.potter@amd.com int index = 0; 1183360SN/A int tgt_fd = process->getSyscallArg(tc, index); 11846701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 118511856Sbrandon.potter@amd.com 118611856Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 1187360SN/A if (sim_fd < 0) 118811380Salexandru.dutu@amd.com return -EBADF; 1189360SN/A 119011856Sbrandon.potter@amd.com struct statfs hostBuf; 119111856Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 11921458SN/A 119311856Sbrandon.potter@amd.com if (result < 0) 1194360SN/A return -errno; 1195360SN/A 119610931Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1197360SN/A 1198360SN/A return 0; 11991458SN/A} 1200360SN/A 120110931Sbrandon.potter@amd.com 12022021SN/A/// Target writev() handler. 12031458SN/Atemplate <class OS> 1204360SN/ASyscallReturn 1205360SN/AwritevFunc(SyscallDesc *desc, int callnum, Process *process, 1206360SN/A ThreadContext *tc) 12071706SN/A{ 12081706SN/A int index = 0; 12091706SN/A int tgt_fd = process->getSyscallArg(tc, index); 121011851Sbrandon.potter@amd.com 12112680Sktlim@umich.edu int sim_fd = process->getSimFD(tgt_fd); 12121706SN/A if (sim_fd < 0) 121311799Sbrandon.potter@amd.com return -EBADF; 121411799Sbrandon.potter@amd.com 121511799Sbrandon.potter@amd.com SETranslatingPortProxy &p = tc->getMemProxy(); 12161706SN/A uint64_t tiov_base = process->getSyscallArg(tc, index); 12171706SN/A size_t count = process->getSyscallArg(tc, index); 12186701Sgblack@eecs.umich.edu struct iovec hiov[count]; 12198852Sandreas.hansson@arm.com for (size_t i = 0; i < count; ++i) { 12206701Sgblack@eecs.umich.edu typename OS::tgt_iovec tiov; 12216701Sgblack@eecs.umich.edu 12226701Sgblack@eecs.umich.edu p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12236701Sgblack@eecs.umich.edu (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12241706SN/A hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12253669Sbinkertn@umich.edu hiov[i].iov_base = new char [hiov[i].iov_len]; 12263669Sbinkertn@umich.edu p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12273669Sbinkertn@umich.edu hiov[i].iov_len); 12281706SN/A } 12291706SN/A 12301706SN/A int result = writev(sim_fd, hiov, count); 12311706SN/A 12322218SN/A for (size_t i = 0; i < count; ++i) 12331706SN/A delete [] (char *)hiov[i].iov_base; 123411759Sbrandon.potter@amd.com 123511799Sbrandon.potter@amd.com if (result < 0) 12361706SN/A return -errno; 12371706SN/A 12381706SN/A return result; 123911886Sbrandon.potter@amd.com} 124011886Sbrandon.potter@amd.com 124111886Sbrandon.potter@amd.com/// Real mmap handler. 124211886Sbrandon.potter@amd.comtemplate <class OS> 124311886Sbrandon.potter@amd.comSyscallReturn 124412426Sqtt2@cornell.edummapImpl(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 124511886Sbrandon.potter@amd.com bool is_mmap2) 124611886Sbrandon.potter@amd.com{ 124711886Sbrandon.potter@amd.com int index = 0; 124812426Sqtt2@cornell.edu Addr start = p->getSyscallArg(tc, index); 124912426Sqtt2@cornell.edu uint64_t length = p->getSyscallArg(tc, index); 125012426Sqtt2@cornell.edu int prot = p->getSyscallArg(tc, index); 125112426Sqtt2@cornell.edu int tgt_flags = p->getSyscallArg(tc, index); 125212426Sqtt2@cornell.edu int tgt_fd = p->getSyscallArg(tc, index); 125312426Sqtt2@cornell.edu int offset = p->getSyscallArg(tc, index); 125412426Sqtt2@cornell.edu 125512426Sqtt2@cornell.edu if (is_mmap2) 125612426Sqtt2@cornell.edu offset *= TheISA::PageBytes; 125712426Sqtt2@cornell.edu 125811886Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 125911886Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 126012426Sqtt2@cornell.edu (tgt_flags & OS::TGT_MAP_PRIVATE && 126111886Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 126211886Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 126311886Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 126411886Sbrandon.potter@amd.com !length) { 126511886Sbrandon.potter@amd.com return -EINVAL; 126611886Sbrandon.potter@amd.com } 126711886Sbrandon.potter@amd.com 126811886Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 126911886Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 127011886Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 127111886Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 127211886Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 127311886Sbrandon.potter@amd.com // structure which maintains information about the which virtual 127411886Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 127511886Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 127611886Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 127711886Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 127811886Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 127911886Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 128011886Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 128111886Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 128211886Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 128311886Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 128411886Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 128511886Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 128611886Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 128711886Sbrandon.potter@amd.com // a call to msync, but that again would require more information 128811886Sbrandon.potter@amd.com // than we currently maintain. 128911886Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 129011886Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 129111886Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 129211886Sbrandon.potter@amd.com } 129311886Sbrandon.potter@amd.com 129411886Sbrandon.potter@amd.com length = roundUp(length, TheISA::PageBytes); 129511886Sbrandon.potter@amd.com 129611886Sbrandon.potter@amd.com int sim_fd = -1; 129711886Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 129811886Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 129911886Sbrandon.potter@amd.com // Check for EmulatedDriver mmap 130011886Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 130111886Sbrandon.potter@amd.com if (fde == NULL) 130211886Sbrandon.potter@amd.com return -EBADF; 130311886Sbrandon.potter@amd.com 130411886Sbrandon.potter@amd.com if (fde->driver != NULL) { 130511886Sbrandon.potter@amd.com return fde->driver->mmap(p, tc, start, length, prot, 130611886Sbrandon.potter@amd.com tgt_flags, tgt_fd, offset); 130711886Sbrandon.potter@amd.com } 130811886Sbrandon.potter@amd.com sim_fd = fde->fd; 130911886Sbrandon.potter@amd.com 131011886Sbrandon.potter@amd.com if (sim_fd < 0) 131111886Sbrandon.potter@amd.com return -EBADF; 131211886Sbrandon.potter@amd.com 131311886Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 131411886Sbrandon.potter@amd.com sim_fd, offset); 131511886Sbrandon.potter@amd.com 131611886Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 131711886Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 131811886Sbrandon.potter@amd.com return -errno; 131911886Sbrandon.potter@amd.com } 132011886Sbrandon.potter@amd.com } 132111886Sbrandon.potter@amd.com 132211911SBrandon.Potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 132311911SBrandon.Potter@amd.com // start address unless MAP_FIXED is specified. 132411911SBrandon.Potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 132511911SBrandon.Potter@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 132611911SBrandon.Potter@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 132711911SBrandon.Potter@amd.com } 132811911SBrandon.Potter@amd.com 132911886Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 133011886Sbrandon.potter@amd.com start, start + length - 1); 133111886Sbrandon.potter@amd.com 133211886Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 133311886Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 133411886Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 133511886Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 133611886Sbrandon.potter@amd.com if (clobber) { 133711886Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 133811886Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 133911886Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 134011886Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 134111886Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 134211886Sbrandon.potter@amd.com } 134311886Sbrandon.potter@amd.com } 134411886Sbrandon.potter@amd.com 134511886Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 134611886Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 134711886Sbrandon.potter@amd.com // fatal and bail out of the simulation. 134811886Sbrandon.potter@amd.com p->allocateMem(start, length, clobber); 134911886Sbrandon.potter@amd.com 135011886Sbrandon.potter@amd.com // Transfer content into target address space. 135111886Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 135211886Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 135311886Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 135411886Sbrandon.potter@amd.com // with something like: 135512426Sqtt2@cornell.edu // tp.memsetBlob(start, 0, length); 135611886Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 135711886Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 135811886Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 135911886Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 136011886Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 136111886Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 136211886Sbrandon.potter@amd.com } else { 136311886Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 136411886Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 136511886Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 136611886Sbrandon.potter@amd.com // the host into the target address space. 136711886Sbrandon.potter@amd.com struct stat file_stat; 136811886Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 136911886Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 137011886Sbrandon.potter@amd.com 137111886Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 137211886Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 137311886Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 137411886Sbrandon.potter@amd.com // on the specified offset into the file. 137511886Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 137611886Sbrandon.potter@amd.com length); 137711886Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 137811886Sbrandon.potter@amd.com 137911886Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 138011886Sbrandon.potter@amd.com munmap(pmap, length); 138111886Sbrandon.potter@amd.com 138211886Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 13831706SN/A // The loader will call mmap to map the images into its address 13841706SN/A // space and we intercept that here. We can verify that we are 13851706SN/A // executing inside the loader by checking the program counter value. 13861706SN/A // XXX: with multiprogrammed workloads or multi-node configurations, 138711856Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 13881706SN/A ObjectFile *interpreter = p->getInterpreter(); 13896701Sgblack@eecs.umich.edu if (interpreter) { 139011856Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 139111856Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 13921706SN/A 139311856Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 139411856Sbrandon.potter@amd.com 13951706SN/A if (pc >= text_start && pc < text_end) { 139611856Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 13971706SN/A 13981706SN/A ObjectFile *lib = createObjectFile(fde->filename); 139910931Sbrandon.potter@amd.com 14001706SN/A if (lib) { 14011706SN/A lib->loadAllSymbols(debugSymbolTable, 14022218SN/A lib->textBase(), start); 14031706SN/A } 140411759Sbrandon.potter@amd.com } 14051706SN/A } 14061706SN/A 14071706SN/A // Note that we do not zero out the remainder of the mapping. This 14081706SN/A // is done by a real system, but it probably will not affect 14091706SN/A // execution (hopefully). 14101999SN/A } 14111999SN/A 14121999SN/A return start; 141311856Sbrandon.potter@amd.com} 14141999SN/A 14156701Sgblack@eecs.umich.edutemplate <class OS> 141611856Sbrandon.potter@amd.comSyscallReturn 141710931Sbrandon.potter@amd.compwrite64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 141811856Sbrandon.potter@amd.com{ 141911856Sbrandon.potter@amd.com int index = 0; 14201999SN/A int tgt_fd = p->getSyscallArg(tc, index); 142111856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 14221999SN/A int nbytes = p->getSyscallArg(tc, index); 142311856Sbrandon.potter@amd.com int offset = p->getSyscallArg(tc, index); 142411856Sbrandon.potter@amd.com 142511856Sbrandon.potter@amd.com int sim_fd = p->getSimFD(tgt_fd); 14261999SN/A if (sim_fd < 0) 14276227Snate@binkert.org return -EBADF; 14281999SN/A 14292461SN/A BufferArg bufArg(bufPtr, nbytes); 143011856Sbrandon.potter@amd.com bufArg.copyIn(tc->getMemProxy()); 143111856Sbrandon.potter@amd.com 14328737Skoansin.tan@gmail.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 14331999SN/A 143411856Sbrandon.potter@amd.com return (bytes_written == -1) ? -errno : bytes_written; 143511856Sbrandon.potter@amd.com} 14361999SN/A 14371999SN/A/// Target mmap() handler. 143810931Sbrandon.potter@amd.comtemplate <class OS> 14391999SN/ASyscallReturn 14406227Snate@binkert.orgmmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 14411999SN/A{ 14421999SN/A return mmapImpl<OS>(desc, num, p, tc, false); 14431999SN/A} 14442218SN/A 14451999SN/A/// Target mmap2() handler. 144610629Sjthestness@gmail.comtemplate <class OS> 14471999SN/ASyscallReturn 14481999SN/Ammap2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 144911385Sbrandon.potter@amd.com{ 1450360SN/A return mmapImpl<OS>(desc, num, p, tc, true); 14511450SN/A} 145211851Sbrandon.potter@amd.com 145311385Sbrandon.potter@amd.com/// Target getrlimit() handler. 1454360SN/Atemplate <class OS> 14556701Sgblack@eecs.umich.eduSyscallReturn 14566701Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, Process *process, 14576701Sgblack@eecs.umich.edu ThreadContext *tc) 145811383Sbrandon.potter@amd.com{ 145911383Sbrandon.potter@amd.com int index = 0; 14608324Ssteve.reinhardt@amd.com unsigned resource = process->getSyscallArg(tc, index); 146110486Stjablin@gmail.com TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1462360SN/A 146311385Sbrandon.potter@amd.com switch (resource) { 146411385Sbrandon.potter@amd.com case OS::TGT_RLIMIT_STACK: 14659008Sgblack@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 146611383Sbrandon.potter@amd.com rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 146711383Sbrandon.potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 146811383Sbrandon.potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 146911383Sbrandon.potter@amd.com break; 147011383Sbrandon.potter@amd.com 147111383Sbrandon.potter@amd.com case OS::TGT_RLIMIT_DATA: 147211383Sbrandon.potter@amd.com // max data segment size in bytes: make up a number 147311383Sbrandon.potter@amd.com rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 147411383Sbrandon.potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14758324Ssteve.reinhardt@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 147611383Sbrandon.potter@amd.com break; 147711383Sbrandon.potter@amd.com 147811383Sbrandon.potter@amd.com default: 147911383Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 148011383Sbrandon.potter@amd.com return -EINVAL; 148111383Sbrandon.potter@amd.com break; 148211383Sbrandon.potter@amd.com } 148311383Sbrandon.potter@amd.com 148411383Sbrandon.potter@amd.com rlp.copyOut(tc->getMemProxy()); 148511383Sbrandon.potter@amd.com return 0; 148611383Sbrandon.potter@amd.com} 148711383Sbrandon.potter@amd.com 148811383Sbrandon.potter@amd.com/// Target clock_gettime() function. 148911383Sbrandon.potter@amd.comtemplate <class OS> 149011383Sbrandon.potter@amd.comSyscallReturn 149111383Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 149211383Sbrandon.potter@amd.com{ 149311383Sbrandon.potter@amd.com int index = 1; 149411383Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 149511383Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 149611383Sbrandon.potter@amd.com 149711383Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 149811383Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 149911383Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 15008324Ssteve.reinhardt@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 15015877Shsul@eecs.umich.edu 150210486Stjablin@gmail.com tp.copyOut(tc->getMemProxy()); 150310486Stjablin@gmail.com 150411383Sbrandon.potter@amd.com return 0; 150511383Sbrandon.potter@amd.com} 150611383Sbrandon.potter@amd.com 150711856Sbrandon.potter@amd.com/// Target clock_getres() function. 150811624Smichael.lebeane@amd.comtemplate <class OS> 150911856Sbrandon.potter@amd.comSyscallReturn 151011856Sbrandon.potter@amd.comclock_getresFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 151111856Sbrandon.potter@amd.com{ 151211856Sbrandon.potter@amd.com int index = 1; 151311624Smichael.lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 151411624Smichael.lebeane@amd.com 151511624Smichael.lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 151611856Sbrandon.potter@amd.com tp->tv_sec = 0; 151711856Sbrandon.potter@amd.com tp->tv_nsec = 1; 151811383Sbrandon.potter@amd.com 151911856Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 1520360SN/A 152111913SBrandon.Potter@amd.com return 0; 152211383Sbrandon.potter@amd.com} 15238600Ssteve.reinhardt@amd.com 152411383Sbrandon.potter@amd.com/// Target gettimeofday() handler. 152511383Sbrandon.potter@amd.comtemplate <class OS> 152611383Sbrandon.potter@amd.comSyscallReturn 15278600Ssteve.reinhardt@amd.comgettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process, 15282544SN/A ThreadContext *tc) 15292544SN/A{ 153011383Sbrandon.potter@amd.com int index = 0; 153111383Sbrandon.potter@amd.com TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 153211383Sbrandon.potter@amd.com 153311905SBrandon.Potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 153411905SBrandon.Potter@amd.com tp->tv_sec += seconds_since_epoch; 153511905SBrandon.Potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 153611905SBrandon.Potter@amd.com tp->tv_usec = TheISA::htog(tp->tv_usec); 153711905SBrandon.Potter@amd.com 153811905SBrandon.Potter@amd.com tp.copyOut(tc->getMemProxy()); 153911905SBrandon.Potter@amd.com 154011383Sbrandon.potter@amd.com return 0; 154111383Sbrandon.potter@amd.com} 154211383Sbrandon.potter@amd.com 154311383Sbrandon.potter@amd.com 154411383Sbrandon.potter@amd.com/// Target utimes() handler. 154511383Sbrandon.potter@amd.comtemplate <class OS> 154611383Sbrandon.potter@amd.comSyscallReturn 154711383Sbrandon.potter@amd.comutimesFunc(SyscallDesc *desc, int callnum, Process *process, 154811383Sbrandon.potter@amd.com ThreadContext *tc) 154911383Sbrandon.potter@amd.com{ 155011383Sbrandon.potter@amd.com std::string path; 155111383Sbrandon.potter@amd.com 155211383Sbrandon.potter@amd.com int index = 0; 155311383Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 155411383Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 15558600Ssteve.reinhardt@amd.com return -EFAULT; 15566672Sgblack@eecs.umich.edu } 15578600Ssteve.reinhardt@amd.com 155811383Sbrandon.potter@amd.com TypedBufferArg<typename OS::timeval [2]> 155911383Sbrandon.potter@amd.com tp(process->getSyscallArg(tc, index)); 156011383Sbrandon.potter@amd.com tp.copyIn(tc->getMemProxy()); 15618601Ssteve.reinhardt@amd.com 15622544SN/A struct timeval hostTimeval[2]; 156311383Sbrandon.potter@amd.com for (int i = 0; i < 2; ++i) 156411383Sbrandon.potter@amd.com { 156511383Sbrandon.potter@amd.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 156611383Sbrandon.potter@amd.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 156711383Sbrandon.potter@amd.com } 156811383Sbrandon.potter@amd.com 156911383Sbrandon.potter@amd.com // Adjust path for current working directory 157011383Sbrandon.potter@amd.com path = process->fullPath(path); 157111383Sbrandon.potter@amd.com 157211383Sbrandon.potter@amd.com int result = utimes(path.c_str(), hostTimeval); 157311383Sbrandon.potter@amd.com 157411383Sbrandon.potter@amd.com if (result < 0) 157511383Sbrandon.potter@amd.com return -errno; 157611383Sbrandon.potter@amd.com 157711383Sbrandon.potter@amd.com return 0; 157811383Sbrandon.potter@amd.com} 157911383Sbrandon.potter@amd.com/// Target getrusage() function. 158011383Sbrandon.potter@amd.comtemplate <class OS> 158111383Sbrandon.potter@amd.comSyscallReturn 158211383Sbrandon.potter@amd.comgetrusageFunc(SyscallDesc *desc, int callnum, Process *process, 158311383Sbrandon.potter@amd.com ThreadContext *tc) 158411383Sbrandon.potter@amd.com{ 158511383Sbrandon.potter@amd.com int index = 0; 158611383Sbrandon.potter@amd.com int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 158711383Sbrandon.potter@amd.com TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 158811383Sbrandon.potter@amd.com 158911383Sbrandon.potter@amd.com rup->ru_utime.tv_sec = 0; 159011383Sbrandon.potter@amd.com rup->ru_utime.tv_usec = 0; 159111383Sbrandon.potter@amd.com rup->ru_stime.tv_sec = 0; 159211383Sbrandon.potter@amd.com rup->ru_stime.tv_usec = 0; 159311383Sbrandon.potter@amd.com rup->ru_maxrss = 0; 159411383Sbrandon.potter@amd.com rup->ru_ixrss = 0; 159511392Sbrandon.potter@amd.com rup->ru_idrss = 0; 159611392Sbrandon.potter@amd.com rup->ru_isrss = 0; 159711392Sbrandon.potter@amd.com rup->ru_minflt = 0; 159811392Sbrandon.potter@amd.com rup->ru_majflt = 0; 159911392Sbrandon.potter@amd.com rup->ru_nswap = 0; 160011392Sbrandon.potter@amd.com rup->ru_inblock = 0; 160111392Sbrandon.potter@amd.com rup->ru_oublock = 0; 160211392Sbrandon.potter@amd.com rup->ru_msgsnd = 0; 160311392Sbrandon.potter@amd.com rup->ru_msgrcv = 0; 160411392Sbrandon.potter@amd.com rup->ru_nsignals = 0; 160511392Sbrandon.potter@amd.com rup->ru_nvcsw = 0; 160611392Sbrandon.potter@amd.com rup->ru_nivcsw = 0; 160711392Sbrandon.potter@amd.com 160811392Sbrandon.potter@amd.com switch (who) { 160911856Sbrandon.potter@amd.com case OS::TGT_RUSAGE_SELF: 161011856Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 161111856Sbrandon.potter@amd.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 161211392Sbrandon.potter@amd.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 161311392Sbrandon.potter@amd.com break; 161411392Sbrandon.potter@amd.com 161511392Sbrandon.potter@amd.com case OS::TGT_RUSAGE_CHILDREN: 161611392Sbrandon.potter@amd.com // do nothing. We have no child processes, so they take no time. 161711392Sbrandon.potter@amd.com break; 161811392Sbrandon.potter@amd.com 161911392Sbrandon.potter@amd.com default: 162011383Sbrandon.potter@amd.com // don't really handle THREAD or CHILDREN, but just warn and 162111383Sbrandon.potter@amd.com // plow ahead 162211383Sbrandon.potter@amd.com warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 162311383Sbrandon.potter@amd.com who); 162411383Sbrandon.potter@amd.com } 16251458SN/A 1626360SN/A rup.copyOut(tc->getMemProxy()); 1627360SN/A 162811593Santhony.gutierrez@amd.com return 0; 162911593Santhony.gutierrez@amd.com} 163011851Sbrandon.potter@amd.com 163111593Santhony.gutierrez@amd.com/// Target times() function. 163211593Santhony.gutierrez@amd.comtemplate <class OS> 163311593Santhony.gutierrez@amd.comSyscallReturn 163411593Santhony.gutierrez@amd.comtimesFunc(SyscallDesc *desc, int callnum, Process *process, 163511593Santhony.gutierrez@amd.com ThreadContext *tc) 163611593Santhony.gutierrez@amd.com{ 163711593Santhony.gutierrez@amd.com int index = 0; 163811856Sbrandon.potter@amd.com TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 163911856Sbrandon.potter@amd.com 164011593Santhony.gutierrez@amd.com // Fill in the time structure (in clocks) 164111856Sbrandon.potter@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 164211593Santhony.gutierrez@amd.com bufp->tms_utime = clocks; 164311593Santhony.gutierrez@amd.com bufp->tms_stime = 0; 164411593Santhony.gutierrez@amd.com bufp->tms_cutime = 0; 164511593Santhony.gutierrez@amd.com bufp->tms_cstime = 0; 164611594Santhony.gutierrez@amd.com 164711593Santhony.gutierrez@amd.com // Convert to host endianness 164811593Santhony.gutierrez@amd.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 164911593Santhony.gutierrez@amd.com 165011593Santhony.gutierrez@amd.com // Write back 165111385Sbrandon.potter@amd.com bufp.copyOut(tc->getMemProxy()); 165211385Sbrandon.potter@amd.com 165311385Sbrandon.potter@amd.com // Return clock ticks since system boot 165411851Sbrandon.potter@amd.com return clocks; 165511385Sbrandon.potter@amd.com} 165611385Sbrandon.potter@amd.com 165711385Sbrandon.potter@amd.com/// Target time() function. 165811385Sbrandon.potter@amd.comtemplate <class OS> 165911385Sbrandon.potter@amd.comSyscallReturn 166011385Sbrandon.potter@amd.comtimeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 166111385Sbrandon.potter@amd.com{ 166211851Sbrandon.potter@amd.com typename OS::time_t sec, usec; 166311385Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 166411385Sbrandon.potter@amd.com sec += seconds_since_epoch; 166511385Sbrandon.potter@amd.com 166611385Sbrandon.potter@amd.com int index = 0; 1667378SN/A Addr taddr = (Addr)process->getSyscallArg(tc, index); 1668360SN/A if (taddr != 0) { 16691450SN/A typename OS::time_t t = sec; 167011851Sbrandon.potter@amd.com t = TheISA::htog(t); 167111851Sbrandon.potter@amd.com SETranslatingPortProxy &p = tc->getMemProxy(); 1672360SN/A p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16736701Sgblack@eecs.umich.edu } 16746701Sgblack@eecs.umich.edu return sec; 16756701Sgblack@eecs.umich.edu} 1676360SN/A 1677360SN/A 167811906SBrandon.Potter@amd.com#endif // __SIM_SYSCALL_EMUL_HH__ 167911906SBrandon.Potter@amd.com