syscall_emul.hh revision 11800
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> 7311799Sbrandon.potter@amd.com#endif 748229Snate@binkert.org#include <sys/time.h> 758229Snate@binkert.org#include <sys/uio.h> 7611594Santhony.gutierrez@amd.com#include <unistd.h> 777075Snate@binkert.org 788229Snate@binkert.org#include <cerrno> 797075Snate@binkert.org#include <string> 80360SN/A 8111800Sbrandon.potter@amd.com#include "base/intmath.hh" 8211392Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 832462SN/A#include "base/misc.hh" 841354SN/A#include "base/trace.hh" 856216Snate@binkert.org#include "base/types.hh" 866658Snate@binkert.org#include "config/the_isa.hh" 872474SN/A#include "cpu/base.hh" 882680Sktlim@umich.edu#include "cpu/thread_context.hh" 898229Snate@binkert.org#include "mem/page_table.hh" 9010496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 918229Snate@binkert.org#include "sim/process.hh" 9211794Sbrandon.potter@amd.com#include "sim/syscall_debug_macros.hh" 9310497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 9411794Sbrandon.potter@amd.com#include "sim/syscall_return.hh" 95360SN/A 9611794Sbrandon.potter@amd.comclass SyscallDesc; 97360SN/A 98360SN/A////////////////////////////////////////////////////////////////////// 99360SN/A// 100360SN/A// The following emulation functions are generic enough that they 101360SN/A// don't need to be recompiled for different emulated OS's. They are 102360SN/A// defined in sim/syscall_emul.cc. 103360SN/A// 104360SN/A////////////////////////////////////////////////////////////////////// 105360SN/A 106360SN/A 107378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1081706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1093114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 110378SN/A 111378SN/A/// Handler for unimplemented syscalls that we never intend to 112378SN/A/// implement (signal handling, etc.) and should not affect the correct 113378SN/A/// behavior of the program. Print a warning only if the appropriate 114378SN/A/// trace flag is enabled. Return success to the target program. 1151706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1163114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 117360SN/A 11811760Sbrandon.potter@amd.com// Target fallocateFunc() handler. 11911760Sbrandon.potter@amd.comSyscallReturn fallocateFunc(SyscallDesc *desc, int num, 12011760Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 12111760Sbrandon.potter@amd.com 1226109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1231706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 125378SN/A 1266109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1276109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1286109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1296109Ssanchezd@stanford.edu 130378SN/A/// Target getpagesize() handler. 1311706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1323114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 133378SN/A 1345748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1355748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1365748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 137378SN/A 138378SN/A/// Target close() handler. 1391706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1403114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 141378SN/A 142378SN/A/// Target read() handler. 1431706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 145378SN/A 146378SN/A/// Target write() handler. 1471706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1483114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 149378SN/A 150378SN/A/// Target lseek() handler. 1511706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1523114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 153378SN/A 1544118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1554118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 15611800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 1574118Sgblack@eecs.umich.edu 158378SN/A/// Target munmap() handler. 1591706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 161378SN/A 162378SN/A/// Target gethostname() handler. 1631706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 1643114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 165360SN/A 1665513SMichael.Adler@intel.com/// Target getcwd() handler. 1675513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 1685513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1695513SMichael.Adler@intel.com 17010203SAli.Saidi@ARM.com/// Target readlink() handler. 17110203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 17210203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 17310203SAli.Saidi@ARM.com int index = 0); 1745513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 1755513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1765513SMichael.Adler@intel.com 177511SN/A/// Target unlink() handler. 17810633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 17910633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc, 18010633Smichaelupton@gmail.com int index); 1811706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 1823114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 183511SN/A 1845513SMichael.Adler@intel.com/// Target mkdir() handler. 1855513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 1865513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1875513SMichael.Adler@intel.com 188511SN/A/// Target rename() handler. 1891706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 1903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1911706SN/A 1921706SN/A 1931706SN/A/// Target truncate() handler. 1941706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 1953114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1961706SN/A 1971706SN/A 1981706SN/A/// Target ftruncate() handler. 1991706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2003114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2011706SN/A 202511SN/A 2036703Svince@csl.cornell.edu/// Target truncate64() handler. 2046703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2056703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2066703Svince@csl.cornell.edu 2076685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2086685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2096685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2106685Stjones1@inf.ed.ac.uk 2116685Stjones1@inf.ed.ac.uk 2125513SMichael.Adler@intel.com/// Target umask() handler. 2135513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2145513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2155513SMichael.Adler@intel.com 2165513SMichael.Adler@intel.com 2171999SN/A/// Target chown() handler. 2181999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2193114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2201999SN/A 2211999SN/A 2221999SN/A/// Target fchown() handler. 2231999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2251999SN/A 2263079Sstever@eecs.umich.edu/// Target dup() handler. 2273079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2283114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2293079Sstever@eecs.umich.edu 2302093SN/A/// Target fnctl() handler. 2312093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2323114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2332093SN/A 2342687Sksewell@umich.edu/// Target fcntl64() handler. 2352687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 23611800Sbrandon.potter@amd.com LiveProcess *process, ThreadContext *tc); 2372687Sksewell@umich.edu 2382238SN/A/// Target setuid() handler. 2392238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 24011800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2412238SN/A 2422238SN/A/// Target getpid() handler. 2432238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 24411800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2452238SN/A 2462238SN/A/// Target getuid() handler. 2472238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 24811800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2492238SN/A 2502238SN/A/// Target getgid() handler. 2512238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 25211800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2532238SN/A 2542238SN/A/// Target getppid() handler. 2552238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 25611800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2572238SN/A 2582238SN/A/// Target geteuid() handler. 2592238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 26011800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2612238SN/A 2622238SN/A/// Target getegid() handler. 2632238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 26411800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2652238SN/A 2666109Ssanchezd@stanford.edu/// Target clone() handler. 2676109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 26811800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2692238SN/A 2709455Smitch.hayenga+gem5@gmail.com/// Target access() handler 2719455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 2729455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 27310203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 27410203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 27510203SAli.Saidi@ARM.com int index); 2769455Smitch.hayenga+gem5@gmail.com 2779112Smarc.orr@gmail.com/// Futex system call 2789112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 2799112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 2809112Smarc.orr@gmail.comtemplate <class OS> 2819112Smarc.orr@gmail.comSyscallReturn 2829112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 2839112Smarc.orr@gmail.com ThreadContext *tc) 2849112Smarc.orr@gmail.com{ 2859112Smarc.orr@gmail.com int index_uaddr = 0; 2869112Smarc.orr@gmail.com int index_op = 1; 2879112Smarc.orr@gmail.com int index_val = 2; 2889112Smarc.orr@gmail.com int index_timeout = 3; 2899112Smarc.orr@gmail.com 2909112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 2919112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 2929112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 2939112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 2949112Smarc.orr@gmail.com 2959112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 2969112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 2979112Smarc.orr@gmail.com 2989112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 2999112Smarc.orr@gmail.com uaddr, op, val); 3009112Smarc.orr@gmail.com 3019238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3029112Smarc.orr@gmail.com 3039112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3049112Smarc.orr@gmail.com if (timeout != 0) { 3059112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3069112Smarc.orr@gmail.com "we'll wait indefinitely"); 3079112Smarc.orr@gmail.com } 3089112Smarc.orr@gmail.com 3099112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3109112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3119112Smarc.orr@gmail.com int mem_val = *((int *)buf); 31211367Sandreas.hansson@arm.com delete[] buf; 3139112Smarc.orr@gmail.com 31411321Ssteve.reinhardt@amd.com if (val != mem_val) { 3159112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3169112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3179112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3189112Smarc.orr@gmail.com } 3199112Smarc.orr@gmail.com 3209112Smarc.orr@gmail.com // Queue the thread context 3219112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3229112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3239112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3249112Smarc.orr@gmail.com } else { 3259112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3269112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3279112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3289112Smarc.orr@gmail.com } 3299112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3309112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3319112Smarc.orr@gmail.com "thread context\n"); 3329112Smarc.orr@gmail.com tc->suspend(); 3339112Smarc.orr@gmail.com return 0; 3349112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3359112Smarc.orr@gmail.com int wokenUp = 0; 3369112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3379112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3389112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3399112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3409112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3419112Smarc.orr@gmail.com tcWaitList->pop_front(); 3429112Smarc.orr@gmail.com wokenUp++; 3439112Smarc.orr@gmail.com } 34411321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3459112Smarc.orr@gmail.com futex_map.erase(uaddr); 3469112Smarc.orr@gmail.com delete tcWaitList; 3479112Smarc.orr@gmail.com } 3489112Smarc.orr@gmail.com } 3499112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3509112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3519112Smarc.orr@gmail.com return wokenUp; 3529112Smarc.orr@gmail.com } else { 3539238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3549112Smarc.orr@gmail.com return 0; 3559112Smarc.orr@gmail.com } 3569112Smarc.orr@gmail.com 3579112Smarc.orr@gmail.com} 3589112Smarc.orr@gmail.com 3592238SN/A 3602238SN/A/// Pseudo Funcs - These functions use a different return convension, 3612238SN/A/// returning a second value in a register other than the normal return register 3622238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3633114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3642238SN/A 3652238SN/A/// Target getpidPseudo() handler. 3662238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3673114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3682238SN/A 3692238SN/A/// Target getuidPseudo() handler. 3702238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3713114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3722238SN/A 3732238SN/A/// Target getgidPseudo() handler. 3742238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3753114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3762238SN/A 3772238SN/A 3781354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 3791354SN/Aconst int one_million = 1000000; 38010796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 38110796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 3821354SN/A 3831354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3841354SN/A/// by my reckoning. We want to keep this a constant (not use the 3851354SN/A/// real-world time) to keep simulations repeatable. 3861354SN/Aconst unsigned seconds_since_epoch = 1000000000; 3871354SN/A 3881354SN/A/// Helper function to convert current elapsed time to seconds and 3891354SN/A/// microseconds. 3901354SN/Atemplate <class T1, class T2> 3911354SN/Avoid 39210796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 3931354SN/A{ 39410796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 3951354SN/A sec = elapsed_usecs / one_million; 3961354SN/A usec = elapsed_usecs % one_million; 3971354SN/A} 3981354SN/A 39910796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 40010796Sbrandon.potter@amd.com/// nanoseconds. 40110796Sbrandon.potter@amd.comtemplate <class T1, class T2> 40210796Sbrandon.potter@amd.comvoid 40310796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 40410796Sbrandon.potter@amd.com{ 40510796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 40610796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 40710796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 40810796Sbrandon.potter@amd.com} 40910796Sbrandon.potter@amd.com 410360SN/A////////////////////////////////////////////////////////////////////// 411360SN/A// 412360SN/A// The following emulation functions are generic, but need to be 413360SN/A// templated to account for differences in types, constants, etc. 414360SN/A// 415360SN/A////////////////////////////////////////////////////////////////////// 416360SN/A 41711759Sbrandon.potter@amd.com typedef struct statfs hst_statfs; 4183113Sgblack@eecs.umich.edu#if NO_STAT64 4193113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4203113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4213113Sgblack@eecs.umich.edu#else 4223113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4233113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4243113Sgblack@eecs.umich.edu#endif 4253113Sgblack@eecs.umich.edu 4263113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4273113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4283113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4293113Sgblack@eecs.umich.edu 4303113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4313113Sgblack@eecs.umich.edustatic void 4323113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4333113Sgblack@eecs.umich.edu{ 4344189Sgblack@eecs.umich.edu using namespace TheISA; 4354189Sgblack@eecs.umich.edu 4363113Sgblack@eecs.umich.edu if (fakeTTY) 4373113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4383113Sgblack@eecs.umich.edu else 4393113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4408737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4413113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4428737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4433277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4445515SMichael.Adler@intel.com if (fakeTTY) { 4455515SMichael.Adler@intel.com // Claim to be a character device 4465515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4475515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4485515SMichael.Adler@intel.com } 4498737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4503277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4518737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4523277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4538737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4543277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4558737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4563113Sgblack@eecs.umich.edu if (fakeTTY) 4573113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4583113Sgblack@eecs.umich.edu else 4593113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4608737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4613113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4628737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4633114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4648737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4653114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4668737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4673114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4688737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 4694061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4704061Sgblack@eecs.umich.edu // consistently across different hosts. 4714061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4728737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4733113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4748737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4753113Sgblack@eecs.umich.edu} 4763113Sgblack@eecs.umich.edu 4773113Sgblack@eecs.umich.edu// Same for stat64 4783113Sgblack@eecs.umich.edu 4793113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 4803113Sgblack@eecs.umich.edustatic void 4813113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4823113Sgblack@eecs.umich.edu{ 4834189Sgblack@eecs.umich.edu using namespace TheISA; 4844189Sgblack@eecs.umich.edu 4853113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4863113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4873113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 4888737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 4893113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 4908737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 4913113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 4928737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 4933113Sgblack@eecs.umich.edu#else 4943113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 4953113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 4963113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 4973113Sgblack@eecs.umich.edu#endif 4983113Sgblack@eecs.umich.edu} 4993113Sgblack@eecs.umich.edu 5003113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5013113Sgblack@eecs.umich.edutemplate<class OS> 5023113Sgblack@eecs.umich.edustatic void 5038852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5043113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5053113Sgblack@eecs.umich.edu{ 5063113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5073113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5083113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5093113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5103113Sgblack@eecs.umich.edu} 5113113Sgblack@eecs.umich.edu 5123113Sgblack@eecs.umich.edutemplate<class OS> 5133113Sgblack@eecs.umich.edustatic void 5148852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5153113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5163113Sgblack@eecs.umich.edu{ 5173113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5183113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5196686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5203113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5213113Sgblack@eecs.umich.edu} 5223113Sgblack@eecs.umich.edu 52311759Sbrandon.potter@amd.comtemplate <class OS> 52411759Sbrandon.potter@amd.comstatic void 52511759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 52611759Sbrandon.potter@amd.com hst_statfs *host) 52711759Sbrandon.potter@amd.com{ 52811759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 52911759Sbrandon.potter@amd.com 53011759Sbrandon.potter@amd.com#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__) 53111759Sbrandon.potter@amd.com tgt->f_type = 0; 53211759Sbrandon.potter@amd.com#else 53311759Sbrandon.potter@amd.com tgt->f_type = TheISA::htog(host->f_type); 53411759Sbrandon.potter@amd.com#endif 53511759Sbrandon.potter@amd.com tgt->f_bsize = TheISA::htog(host->f_bsize); 53611759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 53711759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 53811759Sbrandon.potter@amd.com tgt->f_bavail = TheISA::htog(host->f_bavail); 53911759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 54011759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 54111759Sbrandon.potter@amd.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 54211759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 54311759Sbrandon.potter@amd.com tgt->f_frsize = TheISA::htog(host->f_frsize); 54411759Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 54511759Sbrandon.potter@amd.com 54611759Sbrandon.potter@amd.com tgt.copyOut(mem); 54711759Sbrandon.potter@amd.com} 54811759Sbrandon.potter@amd.com 549378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 550378SN/A/// only to find out if their stdout is a tty, to determine whether to 5519141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5529141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 553360SN/Atemplate <class OS> 5541450SN/ASyscallReturn 5553114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5562680Sktlim@umich.edu ThreadContext *tc) 557360SN/A{ 5586701Sgblack@eecs.umich.edu int index = 0; 55910930Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 5606701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 561360SN/A 56210930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 563360SN/A 56410932Sbrandon.potter@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 56510496Ssteve.reinhardt@amd.com 56610930Sbrandon.potter@amd.com if (fde == NULL) { 567360SN/A // doesn't map to any simulator fd: not a valid target fd 5681458SN/A return -EBADF; 569360SN/A } 570360SN/A 57110930Sbrandon.potter@amd.com if (fde->driver != NULL) { 57210930Sbrandon.potter@amd.com return fde->driver->ioctl(process, tc, req); 57310496Ssteve.reinhardt@amd.com } 57410496Ssteve.reinhardt@amd.com 5759141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 5761458SN/A return -ENOTTY; 5779141Smarc.orr@gmail.com } 578360SN/A 5799141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 58010930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 5819141Smarc.orr@gmail.com return -ENOTTY; 582360SN/A} 583360SN/A 584360SN/Atemplate <class OS> 58510027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 5863114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 58710027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 588360SN/A{ 589360SN/A std::string path; 590360SN/A 5918852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 5926701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 5931458SN/A return -EFAULT; 594360SN/A 5956701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 5966701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 597360SN/A int hostFlags = 0; 598360SN/A 599360SN/A // translate open flags 600360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 601360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 602360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 603360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 604360SN/A } 605360SN/A } 606360SN/A 607360SN/A // any target flags left? 608360SN/A if (tgtFlags != 0) 6091706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 610360SN/A 611360SN/A#ifdef __CYGWIN32__ 612360SN/A hostFlags |= O_BINARY; 613360SN/A#endif 614360SN/A 6153669Sbinkertn@umich.edu // Adjust path for current working directory 6163669Sbinkertn@umich.edu path = process->fullPath(path); 6173669Sbinkertn@umich.edu 6181706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6191706SN/A 62010496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 62110496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 62210496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 62310496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 62410496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 62510496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 62610496Ssteve.reinhardt@amd.com return -ENOENT; 62710496Ssteve.reinhardt@amd.com } 62810496Ssteve.reinhardt@amd.com 62910496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 63010496Ssteve.reinhardt@amd.com if (drv != NULL) { 63110496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 63210496Ssteve.reinhardt@amd.com // process if necessary. 63310496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 63410496Ssteve.reinhardt@amd.com } 63510496Ssteve.reinhardt@amd.com 63610496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 63710496Ssteve.reinhardt@amd.com // /dev/zero 63810496Ssteve.reinhardt@amd.com } 63910496Ssteve.reinhardt@amd.com 6405795Ssaidi@eecs.umich.edu int fd; 6419143Ssteve.reinhardt@amd.com int local_errno; 6429142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6439142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6449143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6455795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6469143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6475795Ssaidi@eecs.umich.edu } else { 6485795Ssaidi@eecs.umich.edu // open the file 6495795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6509143Ssteve.reinhardt@amd.com local_errno = errno; 6515795Ssaidi@eecs.umich.edu } 652360SN/A 6539143Ssteve.reinhardt@amd.com if (fd == -1) 6549143Ssteve.reinhardt@amd.com return -local_errno; 6559143Ssteve.reinhardt@amd.com 65610932Sbrandon.potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 657360SN/A} 658360SN/A 65910027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 66010027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 66110027SChris.Adeniyi-Jones@arm.comSyscallReturn 66210027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 66310027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 66410027SChris.Adeniyi-Jones@arm.com{ 66510027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 66610027SChris.Adeniyi-Jones@arm.com} 66710027SChris.Adeniyi-Jones@arm.com 66810027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 66910027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 67010027SChris.Adeniyi-Jones@arm.comSyscallReturn 67110027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67210027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 67310027SChris.Adeniyi-Jones@arm.com{ 67410027SChris.Adeniyi-Jones@arm.com int index = 0; 67510027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 67610027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 67710027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 67810027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 67910027SChris.Adeniyi-Jones@arm.com} 68010027SChris.Adeniyi-Jones@arm.com 68110633Smichaelupton@gmail.com/// Target unlinkat() handler. 68210633Smichaelupton@gmail.comtemplate <class OS> 68310633Smichaelupton@gmail.comSyscallReturn 68410633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 68510633Smichaelupton@gmail.com ThreadContext *tc) 68610633Smichaelupton@gmail.com{ 68710633Smichaelupton@gmail.com int index = 0; 68810633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 68910633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 69010633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 69110633Smichaelupton@gmail.com 69210633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 69310633Smichaelupton@gmail.com} 69410633Smichaelupton@gmail.com 69510203SAli.Saidi@ARM.com/// Target facessat() handler 69610203SAli.Saidi@ARM.comtemplate <class OS> 69710203SAli.Saidi@ARM.comSyscallReturn 69810203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69910203SAli.Saidi@ARM.com ThreadContext *tc) 70010203SAli.Saidi@ARM.com{ 70110203SAli.Saidi@ARM.com int index = 0; 70210203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 70310203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 70410203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 70510203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 70610203SAli.Saidi@ARM.com} 70710203SAli.Saidi@ARM.com 70810203SAli.Saidi@ARM.com/// Target readlinkat() handler 70910203SAli.Saidi@ARM.comtemplate <class OS> 71010203SAli.Saidi@ARM.comSyscallReturn 71110203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 71210203SAli.Saidi@ARM.com ThreadContext *tc) 71310203SAli.Saidi@ARM.com{ 71410203SAli.Saidi@ARM.com int index = 0; 71510203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 71610203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 71710203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 71810203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 71910203SAli.Saidi@ARM.com} 72010203SAli.Saidi@ARM.com 72110850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 72210850SGiacomo.Gabrielli@arm.comtemplate <class OS> 72310850SGiacomo.Gabrielli@arm.comSyscallReturn 72410850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 72510850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 72610850SGiacomo.Gabrielli@arm.com{ 72710850SGiacomo.Gabrielli@arm.com int index = 0; 72810850SGiacomo.Gabrielli@arm.com 72910850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 73010850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 73110850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 73210850SGiacomo.Gabrielli@arm.com 73310850SGiacomo.Gabrielli@arm.com std::string old_name; 73410850SGiacomo.Gabrielli@arm.com 73510850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 73610850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 73710850SGiacomo.Gabrielli@arm.com return -EFAULT; 73810850SGiacomo.Gabrielli@arm.com 73910850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 74010850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 74110850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 74210850SGiacomo.Gabrielli@arm.com 74310850SGiacomo.Gabrielli@arm.com std::string new_name; 74410850SGiacomo.Gabrielli@arm.com 74510850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 74610850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 74710850SGiacomo.Gabrielli@arm.com return -EFAULT; 74810850SGiacomo.Gabrielli@arm.com 74910850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 75010850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 75110850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 75210850SGiacomo.Gabrielli@arm.com 75310850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 75410850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 75510850SGiacomo.Gabrielli@arm.com} 75610850SGiacomo.Gabrielli@arm.com 7576640Svince@csl.cornell.edu/// Target sysinfo() handler. 7586640Svince@csl.cornell.edutemplate <class OS> 7596640Svince@csl.cornell.eduSyscallReturn 7606640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7616640Svince@csl.cornell.edu ThreadContext *tc) 7626640Svince@csl.cornell.edu{ 7636640Svince@csl.cornell.edu 7646701Sgblack@eecs.umich.edu int index = 0; 7656701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 76610793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 7676640Svince@csl.cornell.edu 76811758Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 76911758Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 77011758Sbrandon.potter@amd.com sysinfo->mem_unit = 1; 7716640Svince@csl.cornell.edu 7728706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7736640Svince@csl.cornell.edu 7746701Sgblack@eecs.umich.edu return 0; 7756640Svince@csl.cornell.edu} 776360SN/A 7771999SN/A/// Target chmod() handler. 7781999SN/Atemplate <class OS> 7791999SN/ASyscallReturn 7803114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7812680Sktlim@umich.edu ThreadContext *tc) 7821999SN/A{ 7831999SN/A std::string path; 7841999SN/A 7856701Sgblack@eecs.umich.edu int index = 0; 7868852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7876701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7881999SN/A return -EFAULT; 7896701Sgblack@eecs.umich.edu } 7901999SN/A 7916701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7921999SN/A mode_t hostMode = 0; 7931999SN/A 7941999SN/A // XXX translate mode flags via OS::something??? 7951999SN/A hostMode = mode; 7961999SN/A 7973669Sbinkertn@umich.edu // Adjust path for current working directory 7983669Sbinkertn@umich.edu path = process->fullPath(path); 7993669Sbinkertn@umich.edu 8001999SN/A // do the chmod 8011999SN/A int result = chmod(path.c_str(), hostMode); 8021999SN/A if (result < 0) 8032218SN/A return -errno; 8041999SN/A 8051999SN/A return 0; 8061999SN/A} 8071999SN/A 8081999SN/A 8091999SN/A/// Target fchmod() handler. 8101999SN/Atemplate <class OS> 8111999SN/ASyscallReturn 8123114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8132680Sktlim@umich.edu ThreadContext *tc) 8141999SN/A{ 8156701Sgblack@eecs.umich.edu int index = 0; 81610931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 81710931Sbrandon.potter@amd.com uint32_t mode = process->getSyscallArg(tc, index); 81810931Sbrandon.potter@amd.com 81910932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 82010931Sbrandon.potter@amd.com if (sim_fd < 0) 8211999SN/A return -EBADF; 8221999SN/A 8231999SN/A mode_t hostMode = 0; 8241999SN/A 8251999SN/A // XXX translate mode flags via OS::someting??? 8261999SN/A hostMode = mode; 8271999SN/A 8281999SN/A // do the fchmod 82910931Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 8301999SN/A if (result < 0) 8312218SN/A return -errno; 8321999SN/A 8331999SN/A return 0; 8341999SN/A} 8351999SN/A 8365877Shsul@eecs.umich.edu/// Target mremap() handler. 8375877Shsul@eecs.umich.edutemplate <class OS> 8385877Shsul@eecs.umich.eduSyscallReturn 8395877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8405877Shsul@eecs.umich.edu{ 8416701Sgblack@eecs.umich.edu int index = 0; 8426701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8436701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8446701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8456701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 84610027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 84710027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 84810027SChris.Adeniyi-Jones@arm.com 84910027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 85010027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8515877Shsul@eecs.umich.edu 85210318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 85310318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8545877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8555877Shsul@eecs.umich.edu return -EINVAL; 8565877Shsul@eecs.umich.edu } 8575877Shsul@eecs.umich.edu 85810486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 85910486Stjablin@gmail.com 8605877Shsul@eecs.umich.edu if (new_length > old_length) { 86110027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 86210027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8635877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8648601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8655877Shsul@eecs.umich.edu process->mmap_end += diff; 8665877Shsul@eecs.umich.edu return start; 8675877Shsul@eecs.umich.edu } else { 86810027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8695877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8705877Shsul@eecs.umich.edu return -ENOMEM; 8715877Shsul@eecs.umich.edu } else { 87210027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 87310027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 87410027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 87510027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 87610027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 87710027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8785877Shsul@eecs.umich.edu // add on the remaining unallocated pages 87910027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 88010027SChris.Adeniyi-Jones@arm.com new_length - old_length, 88110027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 88210027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 88310027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 88410027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 88510027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 88610027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 88710027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 88810027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 88910027SChris.Adeniyi-Jones@arm.com } 89010027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 89110027SChris.Adeniyi-Jones@arm.com return new_start; 8925877Shsul@eecs.umich.edu } 8935877Shsul@eecs.umich.edu } 8945877Shsul@eecs.umich.edu } else { 89510027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 89610027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 8978601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 89810027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 8995877Shsul@eecs.umich.edu } 9005877Shsul@eecs.umich.edu} 9011999SN/A 902378SN/A/// Target stat() handler. 903360SN/Atemplate <class OS> 9041450SN/ASyscallReturn 9053114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9062680Sktlim@umich.edu ThreadContext *tc) 907360SN/A{ 908360SN/A std::string path; 909360SN/A 9106701Sgblack@eecs.umich.edu int index = 0; 9118852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9126701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9136701Sgblack@eecs.umich.edu return -EFAULT; 9146701Sgblack@eecs.umich.edu } 9156701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 916360SN/A 9173669Sbinkertn@umich.edu // Adjust path for current working directory 9183669Sbinkertn@umich.edu path = process->fullPath(path); 9193669Sbinkertn@umich.edu 920360SN/A struct stat hostBuf; 921360SN/A int result = stat(path.c_str(), &hostBuf); 922360SN/A 923360SN/A if (result < 0) 9242218SN/A return -errno; 925360SN/A 9268706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 927360SN/A 9281458SN/A return 0; 929360SN/A} 930360SN/A 931360SN/A 9325074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9335074Ssaidi@eecs.umich.edutemplate <class OS> 9345074Ssaidi@eecs.umich.eduSyscallReturn 9355074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9365074Ssaidi@eecs.umich.edu ThreadContext *tc) 9375074Ssaidi@eecs.umich.edu{ 9385074Ssaidi@eecs.umich.edu std::string path; 9395074Ssaidi@eecs.umich.edu 9406701Sgblack@eecs.umich.edu int index = 0; 9418852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9426701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9435074Ssaidi@eecs.umich.edu return -EFAULT; 9446701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9455074Ssaidi@eecs.umich.edu 9465074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9475074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9485074Ssaidi@eecs.umich.edu 9495208Ssaidi@eecs.umich.edu#if NO_STAT64 9505208Ssaidi@eecs.umich.edu struct stat hostBuf; 9515208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9525208Ssaidi@eecs.umich.edu#else 9535074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9545074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9555208Ssaidi@eecs.umich.edu#endif 9565074Ssaidi@eecs.umich.edu 9575074Ssaidi@eecs.umich.edu if (result < 0) 9585074Ssaidi@eecs.umich.edu return -errno; 9595074Ssaidi@eecs.umich.edu 9608706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9615074Ssaidi@eecs.umich.edu 9625074Ssaidi@eecs.umich.edu return 0; 9635074Ssaidi@eecs.umich.edu} 9645074Ssaidi@eecs.umich.edu 9655074Ssaidi@eecs.umich.edu 96610027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 96710027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 96810027SChris.Adeniyi-Jones@arm.comSyscallReturn 96910027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 97010027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 97110027SChris.Adeniyi-Jones@arm.com{ 97210027SChris.Adeniyi-Jones@arm.com int index = 0; 97310027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 97410027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 97510793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 97610027SChris.Adeniyi-Jones@arm.com 97710027SChris.Adeniyi-Jones@arm.com std::string path; 97810027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 97910027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 98010027SChris.Adeniyi-Jones@arm.com return -EFAULT; 98110027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 98210027SChris.Adeniyi-Jones@arm.com 98310027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 98410027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 98510027SChris.Adeniyi-Jones@arm.com 98610027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 98710027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 98810027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 98910027SChris.Adeniyi-Jones@arm.com#else 99010027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 99110027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 99210027SChris.Adeniyi-Jones@arm.com#endif 99310027SChris.Adeniyi-Jones@arm.com 99410027SChris.Adeniyi-Jones@arm.com if (result < 0) 99510027SChris.Adeniyi-Jones@arm.com return -errno; 99610027SChris.Adeniyi-Jones@arm.com 99710027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 99810027SChris.Adeniyi-Jones@arm.com 99910027SChris.Adeniyi-Jones@arm.com return 0; 100010027SChris.Adeniyi-Jones@arm.com} 100110027SChris.Adeniyi-Jones@arm.com 100210027SChris.Adeniyi-Jones@arm.com 10031999SN/A/// Target fstat64() handler. 10041999SN/Atemplate <class OS> 10051999SN/ASyscallReturn 10063114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10072680Sktlim@umich.edu ThreadContext *tc) 10081999SN/A{ 10096701Sgblack@eecs.umich.edu int index = 0; 101010931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 10116701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 101210931Sbrandon.potter@amd.com 101310932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 101410931Sbrandon.potter@amd.com if (sim_fd < 0) 10151999SN/A return -EBADF; 10161999SN/A 10172764Sstever@eecs.umich.edu#if NO_STAT64 10182064SN/A struct stat hostBuf; 101910931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 10202064SN/A#else 10212064SN/A struct stat64 hostBuf; 102210931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 10232064SN/A#endif 10241999SN/A 10251999SN/A if (result < 0) 10262218SN/A return -errno; 10271999SN/A 102810931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10291999SN/A 10301999SN/A return 0; 10311999SN/A} 10321999SN/A 10331999SN/A 1034378SN/A/// Target lstat() handler. 1035360SN/Atemplate <class OS> 10361450SN/ASyscallReturn 10373114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10382680Sktlim@umich.edu ThreadContext *tc) 1039360SN/A{ 1040360SN/A std::string path; 1041360SN/A 10426701Sgblack@eecs.umich.edu int index = 0; 10438852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10446701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10456701Sgblack@eecs.umich.edu return -EFAULT; 10466701Sgblack@eecs.umich.edu } 10476701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1048360SN/A 10493669Sbinkertn@umich.edu // Adjust path for current working directory 10503669Sbinkertn@umich.edu path = process->fullPath(path); 10513669Sbinkertn@umich.edu 1052360SN/A struct stat hostBuf; 1053360SN/A int result = lstat(path.c_str(), &hostBuf); 1054360SN/A 1055360SN/A if (result < 0) 10561458SN/A return -errno; 1057360SN/A 10588706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1059360SN/A 10601458SN/A return 0; 1061360SN/A} 1062360SN/A 10631999SN/A/// Target lstat64() handler. 10641999SN/Atemplate <class OS> 10651999SN/ASyscallReturn 10663114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10672680Sktlim@umich.edu ThreadContext *tc) 10681999SN/A{ 10691999SN/A std::string path; 10701999SN/A 10716701Sgblack@eecs.umich.edu int index = 0; 10728852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10736701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10746701Sgblack@eecs.umich.edu return -EFAULT; 10756701Sgblack@eecs.umich.edu } 10766701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10771999SN/A 10783669Sbinkertn@umich.edu // Adjust path for current working directory 10793669Sbinkertn@umich.edu path = process->fullPath(path); 10803669Sbinkertn@umich.edu 10812764Sstever@eecs.umich.edu#if NO_STAT64 10822064SN/A struct stat hostBuf; 10832064SN/A int result = lstat(path.c_str(), &hostBuf); 10842064SN/A#else 10851999SN/A struct stat64 hostBuf; 10861999SN/A int result = lstat64(path.c_str(), &hostBuf); 10872064SN/A#endif 10881999SN/A 10891999SN/A if (result < 0) 10901999SN/A return -errno; 10911999SN/A 10928706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10931999SN/A 10941999SN/A return 0; 10951999SN/A} 10961999SN/A 1097378SN/A/// Target fstat() handler. 1098360SN/Atemplate <class OS> 10991450SN/ASyscallReturn 11003114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11012680Sktlim@umich.edu ThreadContext *tc) 1102360SN/A{ 11036701Sgblack@eecs.umich.edu int index = 0; 110410931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11056701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1106360SN/A 110711380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1108360SN/A 110910932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 111010931Sbrandon.potter@amd.com if (sim_fd < 0) 11111458SN/A return -EBADF; 1112360SN/A 1113360SN/A struct stat hostBuf; 111410931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1115360SN/A 1116360SN/A if (result < 0) 11171458SN/A return -errno; 1118360SN/A 111910931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11202021SN/A 11211458SN/A return 0; 1122360SN/A} 1123360SN/A 1124360SN/A 11251706SN/A/// Target statfs() handler. 11261706SN/Atemplate <class OS> 11271706SN/ASyscallReturn 11283114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11292680Sktlim@umich.edu ThreadContext *tc) 11301706SN/A{ 113111799Sbrandon.potter@amd.com#if NO_STATFS 113211799Sbrandon.potter@amd.com warn("Host OS cannot support calls to statfs. Ignoring syscall"); 113311799Sbrandon.potter@amd.com#else 11341706SN/A std::string path; 11351706SN/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); 11421706SN/A 11433669Sbinkertn@umich.edu // Adjust path for current working directory 11443669Sbinkertn@umich.edu path = process->fullPath(path); 11453669Sbinkertn@umich.edu 11461706SN/A struct statfs hostBuf; 11471706SN/A int result = statfs(path.c_str(), &hostBuf); 11481706SN/A 11491706SN/A if (result < 0) 11502218SN/A return -errno; 11511706SN/A 115211759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 115311799Sbrandon.potter@amd.com#endif 11541706SN/A return 0; 11551706SN/A} 11561706SN/A 11571706SN/A 11581706SN/A/// Target fstatfs() handler. 11591706SN/Atemplate <class OS> 11601706SN/ASyscallReturn 11613114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11622680Sktlim@umich.edu ThreadContext *tc) 11631706SN/A{ 11646701Sgblack@eecs.umich.edu int index = 0; 116510931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11666701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11671706SN/A 116810932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 116910931Sbrandon.potter@amd.com if (sim_fd < 0) 11701706SN/A return -EBADF; 11711706SN/A 11721706SN/A struct statfs hostBuf; 117310931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 11741706SN/A 11751706SN/A if (result < 0) 11762218SN/A return -errno; 11771706SN/A 117811759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11791706SN/A 11801706SN/A return 0; 11811706SN/A} 11821706SN/A 11831706SN/A 11841999SN/A/// Target writev() handler. 11851999SN/Atemplate <class OS> 11861999SN/ASyscallReturn 11873114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11882680Sktlim@umich.edu ThreadContext *tc) 11891999SN/A{ 11906701Sgblack@eecs.umich.edu int index = 0; 119110931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 119210931Sbrandon.potter@amd.com 119310932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 119410931Sbrandon.potter@amd.com if (sim_fd < 0) 11951999SN/A return -EBADF; 11961999SN/A 11978852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 11986701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 11996701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 12001999SN/A struct iovec hiov[count]; 12016227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 12021999SN/A typename OS::tgt_iovec tiov; 12032461SN/A 12048852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12058852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12068737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12071999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 12088852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12098852Sandreas.hansson@arm.com hiov[i].iov_len); 12101999SN/A } 12111999SN/A 121210931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 12131999SN/A 12146227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12151999SN/A delete [] (char *)hiov[i].iov_base; 12161999SN/A 12171999SN/A if (result < 0) 12182218SN/A return -errno; 12191999SN/A 122010629Sjthestness@gmail.com return result; 12211999SN/A} 12221999SN/A 122311385Sbrandon.potter@amd.com/// Real mmap handler. 1224360SN/Atemplate <class OS> 12251450SN/ASyscallReturn 122611385Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 122711385Sbrandon.potter@amd.com bool is_mmap2) 1228360SN/A{ 12296701Sgblack@eecs.umich.edu int index = 0; 12306701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12316701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 123211383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 123311383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12348324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 123510486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1236360SN/A 123711385Sbrandon.potter@amd.com if (is_mmap2) 123811385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12399008Sgblack@eecs.umich.edu 124011383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 124111383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 124211383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 124311383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 124411383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 124511383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 124611383Sbrandon.potter@amd.com !length) { 124711383Sbrandon.potter@amd.com return -EINVAL; 124811383Sbrandon.potter@amd.com } 12498324Ssteve.reinhardt@amd.com 125011383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 125111383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 125211383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 125311383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 125411383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 125511383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 125611383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 125711383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 125811383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 125911383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 126011383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 126111383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 126211383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 126311383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 126411383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 126511383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 126611383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 126711383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 126811383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 126911383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 127011383Sbrandon.potter@amd.com // than we currently maintain. 127111383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 127211383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 127311383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 12748324Ssteve.reinhardt@amd.com } 12755877Shsul@eecs.umich.edu 127610486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 127710486Stjablin@gmail.com 127811383Sbrandon.potter@amd.com int sim_fd = -1; 127911383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 128011383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 128111624Smichael.lebeane@amd.com // Check for EmulatedDriver mmap 128211624Smichael.lebeane@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 128311624Smichael.lebeane@amd.com if (fde == NULL) 128411624Smichael.lebeane@amd.com return -EBADF; 128511624Smichael.lebeane@amd.com 128611624Smichael.lebeane@amd.com if (fde->driver != NULL) { 128711624Smichael.lebeane@amd.com return fde->driver->mmap(p, tc, start, length, prot, 128811624Smichael.lebeane@amd.com tgt_flags, tgt_fd, offset); 128911624Smichael.lebeane@amd.com } 129011624Smichael.lebeane@amd.com sim_fd = fde->fd; 129111624Smichael.lebeane@amd.com 129211383Sbrandon.potter@amd.com if (sim_fd < 0) 129311383Sbrandon.potter@amd.com return -EBADF; 1294360SN/A 129511383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 129611383Sbrandon.potter@amd.com sim_fd, offset); 12978600Ssteve.reinhardt@amd.com 129811383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 129911383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 130011383Sbrandon.potter@amd.com return -errno; 13018600Ssteve.reinhardt@amd.com } 13022544SN/A } 13032544SN/A 130411383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 130511383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 130611383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 130711386Ssteve.reinhardt@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 130811386Ssteve.reinhardt@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 130911383Sbrandon.potter@amd.com } 131011383Sbrandon.potter@amd.com 131111383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 131211383Sbrandon.potter@amd.com start, start + length - 1); 131311383Sbrandon.potter@amd.com 131411383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 131511383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 131611383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 131711383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 131811383Sbrandon.potter@amd.com if (clobber) { 131911383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 132011383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 132111383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 132211383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 132311383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13248600Ssteve.reinhardt@amd.com } 13256672Sgblack@eecs.umich.edu } 13268600Ssteve.reinhardt@amd.com 132711383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 132811383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 132911383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 13308601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 13312544SN/A 133211383Sbrandon.potter@amd.com // Transfer content into target address space. 133311383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 133411383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 133511383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 133611383Sbrandon.potter@amd.com // with something like: 133711383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 133811383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 133911383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 134011383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 134111383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 134211383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 134311383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 134411383Sbrandon.potter@amd.com } else { 134511383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 134611383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 134711383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 134811383Sbrandon.potter@amd.com // the host into the target address space. 134911383Sbrandon.potter@amd.com struct stat file_stat; 135011383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 135111383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 135211383Sbrandon.potter@amd.com 135311383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 135411383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 135511383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 135611383Sbrandon.potter@amd.com // on the specified offset into the file. 135711383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 135811383Sbrandon.potter@amd.com length); 135911383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 136011383Sbrandon.potter@amd.com 136111383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 136211383Sbrandon.potter@amd.com munmap(pmap, length); 136311383Sbrandon.potter@amd.com 136411392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 136511392Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 136611392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 136711392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 136811392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 136911392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 137011392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 137111392Sbrandon.potter@amd.com if (interpreter) { 137211392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 137311392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 137411392Sbrandon.potter@amd.com 137511392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 137611392Sbrandon.potter@amd.com 137711392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 137811392Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 137911392Sbrandon.potter@amd.com 138011392Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(fde->filename); 138111392Sbrandon.potter@amd.com 138211392Sbrandon.potter@amd.com if (lib) { 138311392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 138411392Sbrandon.potter@amd.com lib->textBase(), start); 138511392Sbrandon.potter@amd.com } 138611392Sbrandon.potter@amd.com } 138711392Sbrandon.potter@amd.com } 138811392Sbrandon.potter@amd.com 138911383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 139011383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 139111383Sbrandon.potter@amd.com // execution (hopefully). 139211383Sbrandon.potter@amd.com } 139311383Sbrandon.potter@amd.com 13941458SN/A return start; 1395360SN/A} 1396360SN/A 139711593Santhony.gutierrez@amd.comtemplate <class OS> 139811593Santhony.gutierrez@amd.comSyscallReturn 139911593Santhony.gutierrez@amd.compwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 140011593Santhony.gutierrez@amd.com{ 140111593Santhony.gutierrez@amd.com int index = 0; 140211593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 140311593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 140411593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 140511593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 140611593Santhony.gutierrez@amd.com 140711593Santhony.gutierrez@amd.com int sim_fd = p->getSimFD(tgt_fd); 140811593Santhony.gutierrez@amd.com if (sim_fd < 0) 140911593Santhony.gutierrez@amd.com return -EBADF; 141011593Santhony.gutierrez@amd.com 141111593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 141211593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 141311593Santhony.gutierrez@amd.com 141411594Santhony.gutierrez@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 141511593Santhony.gutierrez@amd.com 141611593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 141711593Santhony.gutierrez@amd.com} 141811593Santhony.gutierrez@amd.com 141911385Sbrandon.potter@amd.com/// Target mmap() handler. 142011385Sbrandon.potter@amd.comtemplate <class OS> 142111385Sbrandon.potter@amd.comSyscallReturn 142211385Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 142311385Sbrandon.potter@amd.com{ 142411385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 142511385Sbrandon.potter@amd.com} 142611385Sbrandon.potter@amd.com 142711385Sbrandon.potter@amd.com/// Target mmap2() handler. 142811385Sbrandon.potter@amd.comtemplate <class OS> 142911385Sbrandon.potter@amd.comSyscallReturn 143011385Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 143111385Sbrandon.potter@amd.com{ 143211385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 143311385Sbrandon.potter@amd.com} 143411385Sbrandon.potter@amd.com 1435378SN/A/// Target getrlimit() handler. 1436360SN/Atemplate <class OS> 14371450SN/ASyscallReturn 14383114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14392680Sktlim@umich.edu ThreadContext *tc) 1440360SN/A{ 14416701Sgblack@eecs.umich.edu int index = 0; 14426701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 14436701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1444360SN/A 1445360SN/A switch (resource) { 14462064SN/A case OS::TGT_RLIMIT_STACK: 14475877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14482064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14498737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14508737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14512064SN/A break; 1452360SN/A 14535877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 14545877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 14555877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14568737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14578737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14585877Shsul@eecs.umich.edu break; 14595877Shsul@eecs.umich.edu 14602064SN/A default: 146110794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 146210794Sbrandon.potter@amd.com return -EINVAL; 14632064SN/A break; 1464360SN/A } 1465360SN/A 14668706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 14671458SN/A return 0; 1468360SN/A} 1469360SN/A 147010796Sbrandon.potter@amd.com/// Target clock_gettime() function. 147110796Sbrandon.potter@amd.comtemplate <class OS> 147210796Sbrandon.potter@amd.comSyscallReturn 147310796Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 147410796Sbrandon.potter@amd.com{ 147510796Sbrandon.potter@amd.com int index = 1; 147610796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 147710796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 147810796Sbrandon.potter@amd.com 147910796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 148010796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 148110796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 148210796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 148310796Sbrandon.potter@amd.com 148410796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 148510796Sbrandon.potter@amd.com 148610796Sbrandon.potter@amd.com return 0; 148710796Sbrandon.potter@amd.com} 148810796Sbrandon.potter@amd.com 148911337SMichael.Lebeane@amd.com/// Target clock_getres() function. 149011337SMichael.Lebeane@amd.comtemplate <class OS> 149111337SMichael.Lebeane@amd.comSyscallReturn 149211337SMichael.Lebeane@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 149311337SMichael.Lebeane@amd.com{ 149411337SMichael.Lebeane@amd.com int index = 1; 149511337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 149611337SMichael.Lebeane@amd.com 149711337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 149811337SMichael.Lebeane@amd.com tp->tv_sec = 0; 149911337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 150011337SMichael.Lebeane@amd.com 150111337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 150211337SMichael.Lebeane@amd.com 150311337SMichael.Lebeane@amd.com return 0; 150411337SMichael.Lebeane@amd.com} 150511337SMichael.Lebeane@amd.com 1506378SN/A/// Target gettimeofday() handler. 1507360SN/Atemplate <class OS> 15081450SN/ASyscallReturn 15093114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15102680Sktlim@umich.edu ThreadContext *tc) 1511360SN/A{ 15126701Sgblack@eecs.umich.edu int index = 0; 15136701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1514360SN/A 151510796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1516360SN/A tp->tv_sec += seconds_since_epoch; 15176109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 15186109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1519360SN/A 15208706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1521360SN/A 15221458SN/A return 0; 1523360SN/A} 1524360SN/A 1525360SN/A 15261999SN/A/// Target utimes() handler. 15271999SN/Atemplate <class OS> 15281999SN/ASyscallReturn 15293114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15302680Sktlim@umich.edu ThreadContext *tc) 15311999SN/A{ 15321999SN/A std::string path; 15331999SN/A 15346701Sgblack@eecs.umich.edu int index = 0; 15358852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 15366701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 15376701Sgblack@eecs.umich.edu return -EFAULT; 15386701Sgblack@eecs.umich.edu } 15391999SN/A 15406701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 15416701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 15428706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 15431999SN/A 15441999SN/A struct timeval hostTimeval[2]; 15451999SN/A for (int i = 0; i < 2; ++i) 15461999SN/A { 15478737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15488737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15491999SN/A } 15503669Sbinkertn@umich.edu 15513669Sbinkertn@umich.edu // Adjust path for current working directory 15523669Sbinkertn@umich.edu path = process->fullPath(path); 15533669Sbinkertn@umich.edu 15541999SN/A int result = utimes(path.c_str(), hostTimeval); 15551999SN/A 15561999SN/A if (result < 0) 15571999SN/A return -errno; 15581999SN/A 15591999SN/A return 0; 15601999SN/A} 1561378SN/A/// Target getrusage() function. 1562360SN/Atemplate <class OS> 15631450SN/ASyscallReturn 15643114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15652680Sktlim@umich.edu ThreadContext *tc) 1566360SN/A{ 15676701Sgblack@eecs.umich.edu int index = 0; 15686701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 15696701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1570360SN/A 15713670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 15723670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1573360SN/A rup->ru_stime.tv_sec = 0; 1574360SN/A rup->ru_stime.tv_usec = 0; 1575360SN/A rup->ru_maxrss = 0; 1576360SN/A rup->ru_ixrss = 0; 1577360SN/A rup->ru_idrss = 0; 1578360SN/A rup->ru_isrss = 0; 1579360SN/A rup->ru_minflt = 0; 1580360SN/A rup->ru_majflt = 0; 1581360SN/A rup->ru_nswap = 0; 1582360SN/A rup->ru_inblock = 0; 1583360SN/A rup->ru_oublock = 0; 1584360SN/A rup->ru_msgsnd = 0; 1585360SN/A rup->ru_msgrcv = 0; 1586360SN/A rup->ru_nsignals = 0; 1587360SN/A rup->ru_nvcsw = 0; 1588360SN/A rup->ru_nivcsw = 0; 1589360SN/A 15903670Sbinkertn@umich.edu switch (who) { 15913670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 159210796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 15938737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 15948737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 15953670Sbinkertn@umich.edu break; 15963670Sbinkertn@umich.edu 15973670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 15983670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 15993670Sbinkertn@umich.edu break; 16003670Sbinkertn@umich.edu 16013670Sbinkertn@umich.edu default: 16023670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 16033670Sbinkertn@umich.edu // plow ahead 16043670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 16053670Sbinkertn@umich.edu who); 16063670Sbinkertn@umich.edu } 16073670Sbinkertn@umich.edu 16088706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1609360SN/A 16101458SN/A return 0; 1611360SN/A} 1612360SN/A 16136683Stjones1@inf.ed.ac.uk/// Target times() function. 16146683Stjones1@inf.ed.ac.uktemplate <class OS> 16156683Stjones1@inf.ed.ac.ukSyscallReturn 16166683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16176683Stjones1@inf.ed.ac.uk ThreadContext *tc) 16186683Stjones1@inf.ed.ac.uk{ 16196701Sgblack@eecs.umich.edu int index = 0; 16206701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 16216683Stjones1@inf.ed.ac.uk 16226683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 16237823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16246683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 16256683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 16266683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 16276683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 16286683Stjones1@inf.ed.ac.uk 16296683Stjones1@inf.ed.ac.uk // Convert to host endianness 16308737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 16316683Stjones1@inf.ed.ac.uk 16326683Stjones1@inf.ed.ac.uk // Write back 16338706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 16346683Stjones1@inf.ed.ac.uk 16356683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 16366683Stjones1@inf.ed.ac.uk return clocks; 16376683Stjones1@inf.ed.ac.uk} 16382553SN/A 16396684Stjones1@inf.ed.ac.uk/// Target time() function. 16406684Stjones1@inf.ed.ac.uktemplate <class OS> 16416684Stjones1@inf.ed.ac.ukSyscallReturn 16426684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16436684Stjones1@inf.ed.ac.uk ThreadContext *tc) 16446684Stjones1@inf.ed.ac.uk{ 16456684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 164610796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 16476684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 16486684Stjones1@inf.ed.ac.uk 16496701Sgblack@eecs.umich.edu int index = 0; 16506701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 165111321Ssteve.reinhardt@amd.com if (taddr != 0) { 16526684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 16538737Skoansin.tan@gmail.com t = TheISA::htog(t); 16548852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 16558852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16566684Stjones1@inf.ed.ac.uk } 16576684Stjones1@inf.ed.ac.uk return sec; 16586684Stjones1@inf.ed.ac.uk} 16592553SN/A 16602553SN/A 16611354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1662