syscall_emul.hh revision 11794
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 52360SN/A/// 53360SN/A/// @file syscall_emul.hh 54360SN/A/// 55360SN/A/// This file defines objects used to emulate syscalls from the target 56360SN/A/// application on the host machine. 57360SN/A 581809SN/A#ifdef __CYGWIN32__ 595543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 6011392Sbrandon.potter@amd.com 611809SN/A#endif 6211392Sbrandon.potter@amd.com#include <fcntl.h> 6311383Sbrandon.potter@amd.com#include <sys/mman.h> 643113Sgblack@eecs.umich.edu#include <sys/stat.h> 6511759Sbrandon.potter@amd.com#include <sys/statfs.h> 668229Snate@binkert.org#include <sys/time.h> 678229Snate@binkert.org#include <sys/uio.h> 6811594Santhony.gutierrez@amd.com#include <unistd.h> 697075Snate@binkert.org 708229Snate@binkert.org#include <cerrno> 717075Snate@binkert.org#include <string> 72360SN/A 732474SN/A#include "base/chunk_generator.hh" 745543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 7511392Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 762462SN/A#include "base/misc.hh" 771354SN/A#include "base/trace.hh" 786216Snate@binkert.org#include "base/types.hh" 796658Snate@binkert.org#include "config/the_isa.hh" 802474SN/A#include "cpu/base.hh" 812680Sktlim@umich.edu#include "cpu/thread_context.hh" 828229Snate@binkert.org#include "mem/page_table.hh" 837678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 8410496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 858229Snate@binkert.org#include "sim/process.hh" 8611794Sbrandon.potter@amd.com#include "sim/syscall_debug_macros.hh" 8710497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 8811794Sbrandon.potter@amd.com#include "sim/syscall_return.hh" 896640Svince@csl.cornell.edu#include "sim/system.hh" 90360SN/A 9111794Sbrandon.potter@amd.comclass SyscallDesc; 92360SN/A 93360SN/A////////////////////////////////////////////////////////////////////// 94360SN/A// 95360SN/A// The following emulation functions are generic enough that they 96360SN/A// don't need to be recompiled for different emulated OS's. They are 97360SN/A// defined in sim/syscall_emul.cc. 98360SN/A// 99360SN/A////////////////////////////////////////////////////////////////////// 100360SN/A 101360SN/A 102378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1031706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1043114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 105378SN/A 106378SN/A/// Handler for unimplemented syscalls that we never intend to 107378SN/A/// implement (signal handling, etc.) and should not affect the correct 108378SN/A/// behavior of the program. Print a warning only if the appropriate 109378SN/A/// trace flag is enabled. Return success to the target program. 1101706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1113114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 112360SN/A 11311760Sbrandon.potter@amd.com// Target fallocateFunc() handler. 11411760Sbrandon.potter@amd.comSyscallReturn fallocateFunc(SyscallDesc *desc, int num, 11511760Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 11611760Sbrandon.potter@amd.com 1176109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1181706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1193114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 120378SN/A 1216109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1226109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1236109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1246109Ssanchezd@stanford.edu 125378SN/A/// Target getpagesize() handler. 1261706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1273114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 128378SN/A 1295748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1305748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1315748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 132378SN/A 133378SN/A/// Target close() handler. 1341706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1353114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 136378SN/A 137378SN/A/// Target read() handler. 1381706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1393114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 140378SN/A 141378SN/A/// Target write() handler. 1421706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1433114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 144378SN/A 145378SN/A/// Target lseek() handler. 1461706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1473114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 148378SN/A 1494118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1504118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1514118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1524118Sgblack@eecs.umich.edu 153378SN/A/// Target munmap() handler. 1541706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1553114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 156378SN/A 157378SN/A/// Target gethostname() handler. 1581706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 1593114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 160360SN/A 1615513SMichael.Adler@intel.com/// Target getcwd() handler. 1625513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 1635513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1645513SMichael.Adler@intel.com 16510203SAli.Saidi@ARM.com/// Target readlink() handler. 16610203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 16710203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 16810203SAli.Saidi@ARM.com int index = 0); 1695513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 1705513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1715513SMichael.Adler@intel.com 172511SN/A/// Target unlink() handler. 17310633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 17410633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc, 17510633Smichaelupton@gmail.com int index); 1761706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 1773114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 178511SN/A 1795513SMichael.Adler@intel.com/// Target mkdir() handler. 1805513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 1815513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1825513SMichael.Adler@intel.com 183511SN/A/// Target rename() handler. 1841706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 1853114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1861706SN/A 1871706SN/A 1881706SN/A/// Target truncate() handler. 1891706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 1903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1911706SN/A 1921706SN/A 1931706SN/A/// Target ftruncate() handler. 1941706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 1953114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1961706SN/A 197511SN/A 1986703Svince@csl.cornell.edu/// Target truncate64() handler. 1996703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2006703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2016703Svince@csl.cornell.edu 2026685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2036685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2046685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2056685Stjones1@inf.ed.ac.uk 2066685Stjones1@inf.ed.ac.uk 2075513SMichael.Adler@intel.com/// Target umask() handler. 2085513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2095513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2105513SMichael.Adler@intel.com 2115513SMichael.Adler@intel.com 2121999SN/A/// Target chown() handler. 2131999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2143114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2151999SN/A 2161999SN/A 2171999SN/A/// Target fchown() handler. 2181999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2193114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2201999SN/A 2213079Sstever@eecs.umich.edu/// Target dup() handler. 2223079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2233114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2243079Sstever@eecs.umich.edu 2252093SN/A/// Target fnctl() handler. 2262093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2273114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2282093SN/A 2292687Sksewell@umich.edu/// Target fcntl64() handler. 2302687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2313114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2322687Sksewell@umich.edu 2332238SN/A/// Target setuid() handler. 2342238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2353114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2362238SN/A 2372238SN/A/// Target getpid() handler. 2382238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2393114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2402238SN/A 2412238SN/A/// Target getuid() handler. 2422238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2433114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2442238SN/A 2452238SN/A/// Target getgid() handler. 2462238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2473114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2482238SN/A 2492238SN/A/// Target getppid() handler. 2502238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2513114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2522238SN/A 2532238SN/A/// Target geteuid() handler. 2542238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2553114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2562238SN/A 2572238SN/A/// Target getegid() handler. 2582238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 2593114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2602238SN/A 2616109Ssanchezd@stanford.edu/// Target clone() handler. 2626109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 2636109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2642238SN/A 2659455Smitch.hayenga+gem5@gmail.com/// Target access() handler 2669455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 2679455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 26810203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 26910203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 27010203SAli.Saidi@ARM.com int index); 2719455Smitch.hayenga+gem5@gmail.com 2729112Smarc.orr@gmail.com/// Futex system call 2739112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 2749112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 2759112Smarc.orr@gmail.comtemplate <class OS> 2769112Smarc.orr@gmail.comSyscallReturn 2779112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 2789112Smarc.orr@gmail.com ThreadContext *tc) 2799112Smarc.orr@gmail.com{ 2809112Smarc.orr@gmail.com int index_uaddr = 0; 2819112Smarc.orr@gmail.com int index_op = 1; 2829112Smarc.orr@gmail.com int index_val = 2; 2839112Smarc.orr@gmail.com int index_timeout = 3; 2849112Smarc.orr@gmail.com 2859112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 2869112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 2879112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 2889112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 2899112Smarc.orr@gmail.com 2909112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 2919112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 2929112Smarc.orr@gmail.com 2939112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 2949112Smarc.orr@gmail.com uaddr, op, val); 2959112Smarc.orr@gmail.com 2969238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 2979112Smarc.orr@gmail.com 2989112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 2999112Smarc.orr@gmail.com if (timeout != 0) { 3009112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3019112Smarc.orr@gmail.com "we'll wait indefinitely"); 3029112Smarc.orr@gmail.com } 3039112Smarc.orr@gmail.com 3049112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3059112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3069112Smarc.orr@gmail.com int mem_val = *((int *)buf); 30711367Sandreas.hansson@arm.com delete[] buf; 3089112Smarc.orr@gmail.com 30911321Ssteve.reinhardt@amd.com if (val != mem_val) { 3109112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3119112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3129112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3139112Smarc.orr@gmail.com } 3149112Smarc.orr@gmail.com 3159112Smarc.orr@gmail.com // Queue the thread context 3169112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3179112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3189112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3199112Smarc.orr@gmail.com } else { 3209112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3219112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3229112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3239112Smarc.orr@gmail.com } 3249112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3259112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3269112Smarc.orr@gmail.com "thread context\n"); 3279112Smarc.orr@gmail.com tc->suspend(); 3289112Smarc.orr@gmail.com return 0; 3299112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3309112Smarc.orr@gmail.com int wokenUp = 0; 3319112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3329112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3339112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3349112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3359112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3369112Smarc.orr@gmail.com tcWaitList->pop_front(); 3379112Smarc.orr@gmail.com wokenUp++; 3389112Smarc.orr@gmail.com } 33911321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3409112Smarc.orr@gmail.com futex_map.erase(uaddr); 3419112Smarc.orr@gmail.com delete tcWaitList; 3429112Smarc.orr@gmail.com } 3439112Smarc.orr@gmail.com } 3449112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3459112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3469112Smarc.orr@gmail.com return wokenUp; 3479112Smarc.orr@gmail.com } else { 3489238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3499112Smarc.orr@gmail.com return 0; 3509112Smarc.orr@gmail.com } 3519112Smarc.orr@gmail.com 3529112Smarc.orr@gmail.com} 3539112Smarc.orr@gmail.com 3542238SN/A 3552238SN/A/// Pseudo Funcs - These functions use a different return convension, 3562238SN/A/// returning a second value in a register other than the normal return register 3572238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3583114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3592238SN/A 3602238SN/A/// Target getpidPseudo() handler. 3612238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3623114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3632238SN/A 3642238SN/A/// Target getuidPseudo() handler. 3652238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3663114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3672238SN/A 3682238SN/A/// Target getgidPseudo() handler. 3692238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3703114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3712238SN/A 3722238SN/A 3731354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 3741354SN/Aconst int one_million = 1000000; 37510796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 37610796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 3771354SN/A 3781354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3791354SN/A/// by my reckoning. We want to keep this a constant (not use the 3801354SN/A/// real-world time) to keep simulations repeatable. 3811354SN/Aconst unsigned seconds_since_epoch = 1000000000; 3821354SN/A 3831354SN/A/// Helper function to convert current elapsed time to seconds and 3841354SN/A/// microseconds. 3851354SN/Atemplate <class T1, class T2> 3861354SN/Avoid 38710796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 3881354SN/A{ 38910796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 3901354SN/A sec = elapsed_usecs / one_million; 3911354SN/A usec = elapsed_usecs % one_million; 3921354SN/A} 3931354SN/A 39410796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 39510796Sbrandon.potter@amd.com/// nanoseconds. 39610796Sbrandon.potter@amd.comtemplate <class T1, class T2> 39710796Sbrandon.potter@amd.comvoid 39810796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 39910796Sbrandon.potter@amd.com{ 40010796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 40110796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 40210796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 40310796Sbrandon.potter@amd.com} 40410796Sbrandon.potter@amd.com 405360SN/A////////////////////////////////////////////////////////////////////// 406360SN/A// 407360SN/A// The following emulation functions are generic, but need to be 408360SN/A// templated to account for differences in types, constants, etc. 409360SN/A// 410360SN/A////////////////////////////////////////////////////////////////////// 411360SN/A 41211759Sbrandon.potter@amd.com typedef struct statfs hst_statfs; 4133113Sgblack@eecs.umich.edu#if NO_STAT64 4143113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4153113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4163113Sgblack@eecs.umich.edu#else 4173113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4183113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4193113Sgblack@eecs.umich.edu#endif 4203113Sgblack@eecs.umich.edu 4213113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4223113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4233113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4243113Sgblack@eecs.umich.edu 4253113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4263113Sgblack@eecs.umich.edustatic void 4273113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4283113Sgblack@eecs.umich.edu{ 4294189Sgblack@eecs.umich.edu using namespace TheISA; 4304189Sgblack@eecs.umich.edu 4313113Sgblack@eecs.umich.edu if (fakeTTY) 4323113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4333113Sgblack@eecs.umich.edu else 4343113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4358737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4363113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4378737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4383277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4395515SMichael.Adler@intel.com if (fakeTTY) { 4405515SMichael.Adler@intel.com // Claim to be a character device 4415515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4425515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4435515SMichael.Adler@intel.com } 4448737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4453277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4468737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4473277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4488737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4493277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4508737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4513113Sgblack@eecs.umich.edu if (fakeTTY) 4523113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4533113Sgblack@eecs.umich.edu else 4543113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4558737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4563113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4578737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4583114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4598737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4603114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4618737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4623114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4638737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 4644061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4654061Sgblack@eecs.umich.edu // consistently across different hosts. 4664061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4678737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4683113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4698737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4703113Sgblack@eecs.umich.edu} 4713113Sgblack@eecs.umich.edu 4723113Sgblack@eecs.umich.edu// Same for stat64 4733113Sgblack@eecs.umich.edu 4743113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 4753113Sgblack@eecs.umich.edustatic void 4763113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4773113Sgblack@eecs.umich.edu{ 4784189Sgblack@eecs.umich.edu using namespace TheISA; 4794189Sgblack@eecs.umich.edu 4803113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4813113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4823113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 4838737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 4843113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 4858737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 4863113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 4878737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 4883113Sgblack@eecs.umich.edu#else 4893113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 4903113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 4913113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 4923113Sgblack@eecs.umich.edu#endif 4933113Sgblack@eecs.umich.edu} 4943113Sgblack@eecs.umich.edu 4953113Sgblack@eecs.umich.edu//Here are a couple convenience functions 4963113Sgblack@eecs.umich.edutemplate<class OS> 4973113Sgblack@eecs.umich.edustatic void 4988852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 4993113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5003113Sgblack@eecs.umich.edu{ 5013113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5023113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5033113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5043113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5053113Sgblack@eecs.umich.edu} 5063113Sgblack@eecs.umich.edu 5073113Sgblack@eecs.umich.edutemplate<class OS> 5083113Sgblack@eecs.umich.edustatic void 5098852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5103113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5113113Sgblack@eecs.umich.edu{ 5123113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5133113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5146686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5153113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5163113Sgblack@eecs.umich.edu} 5173113Sgblack@eecs.umich.edu 51811759Sbrandon.potter@amd.comtemplate <class OS> 51911759Sbrandon.potter@amd.comstatic void 52011759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 52111759Sbrandon.potter@amd.com hst_statfs *host) 52211759Sbrandon.potter@amd.com{ 52311759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 52411759Sbrandon.potter@amd.com 52511759Sbrandon.potter@amd.com#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__) 52611759Sbrandon.potter@amd.com tgt->f_type = 0; 52711759Sbrandon.potter@amd.com#else 52811759Sbrandon.potter@amd.com tgt->f_type = TheISA::htog(host->f_type); 52911759Sbrandon.potter@amd.com#endif 53011759Sbrandon.potter@amd.com tgt->f_bsize = TheISA::htog(host->f_bsize); 53111759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 53211759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 53311759Sbrandon.potter@amd.com tgt->f_bavail = TheISA::htog(host->f_bavail); 53411759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 53511759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 53611759Sbrandon.potter@amd.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 53711759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 53811759Sbrandon.potter@amd.com tgt->f_frsize = TheISA::htog(host->f_frsize); 53911759Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 54011759Sbrandon.potter@amd.com 54111759Sbrandon.potter@amd.com tgt.copyOut(mem); 54211759Sbrandon.potter@amd.com} 54311759Sbrandon.potter@amd.com 544378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 545378SN/A/// only to find out if their stdout is a tty, to determine whether to 5469141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5479141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 548360SN/Atemplate <class OS> 5491450SN/ASyscallReturn 5503114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5512680Sktlim@umich.edu ThreadContext *tc) 552360SN/A{ 5536701Sgblack@eecs.umich.edu int index = 0; 55410930Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 5556701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 556360SN/A 55710930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 558360SN/A 55910932Sbrandon.potter@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 56010496Ssteve.reinhardt@amd.com 56110930Sbrandon.potter@amd.com if (fde == NULL) { 562360SN/A // doesn't map to any simulator fd: not a valid target fd 5631458SN/A return -EBADF; 564360SN/A } 565360SN/A 56610930Sbrandon.potter@amd.com if (fde->driver != NULL) { 56710930Sbrandon.potter@amd.com return fde->driver->ioctl(process, tc, req); 56810496Ssteve.reinhardt@amd.com } 56910496Ssteve.reinhardt@amd.com 5709141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 5711458SN/A return -ENOTTY; 5729141Smarc.orr@gmail.com } 573360SN/A 5749141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 57510930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 5769141Smarc.orr@gmail.com return -ENOTTY; 577360SN/A} 578360SN/A 579360SN/Atemplate <class OS> 58010027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 5813114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 58210027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 583360SN/A{ 584360SN/A std::string path; 585360SN/A 5868852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 5876701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 5881458SN/A return -EFAULT; 589360SN/A 5906701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 5916701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 592360SN/A int hostFlags = 0; 593360SN/A 594360SN/A // translate open flags 595360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 596360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 597360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 598360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 599360SN/A } 600360SN/A } 601360SN/A 602360SN/A // any target flags left? 603360SN/A if (tgtFlags != 0) 6041706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 605360SN/A 606360SN/A#ifdef __CYGWIN32__ 607360SN/A hostFlags |= O_BINARY; 608360SN/A#endif 609360SN/A 6103669Sbinkertn@umich.edu // Adjust path for current working directory 6113669Sbinkertn@umich.edu path = process->fullPath(path); 6123669Sbinkertn@umich.edu 6131706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6141706SN/A 61510496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 61610496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 61710496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 61810496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 61910496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 62010496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 62110496Ssteve.reinhardt@amd.com return -ENOENT; 62210496Ssteve.reinhardt@amd.com } 62310496Ssteve.reinhardt@amd.com 62410496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 62510496Ssteve.reinhardt@amd.com if (drv != NULL) { 62610496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 62710496Ssteve.reinhardt@amd.com // process if necessary. 62810496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 62910496Ssteve.reinhardt@amd.com } 63010496Ssteve.reinhardt@amd.com 63110496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 63210496Ssteve.reinhardt@amd.com // /dev/zero 63310496Ssteve.reinhardt@amd.com } 63410496Ssteve.reinhardt@amd.com 6355795Ssaidi@eecs.umich.edu int fd; 6369143Ssteve.reinhardt@amd.com int local_errno; 6379142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6389142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6399143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6405795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6419143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6425795Ssaidi@eecs.umich.edu } else { 6435795Ssaidi@eecs.umich.edu // open the file 6445795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6459143Ssteve.reinhardt@amd.com local_errno = errno; 6465795Ssaidi@eecs.umich.edu } 647360SN/A 6489143Ssteve.reinhardt@amd.com if (fd == -1) 6499143Ssteve.reinhardt@amd.com return -local_errno; 6509143Ssteve.reinhardt@amd.com 65110932Sbrandon.potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 652360SN/A} 653360SN/A 65410027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 65510027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 65610027SChris.Adeniyi-Jones@arm.comSyscallReturn 65710027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 65810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 65910027SChris.Adeniyi-Jones@arm.com{ 66010027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 66110027SChris.Adeniyi-Jones@arm.com} 66210027SChris.Adeniyi-Jones@arm.com 66310027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 66410027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 66510027SChris.Adeniyi-Jones@arm.comSyscallReturn 66610027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 66710027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 66810027SChris.Adeniyi-Jones@arm.com{ 66910027SChris.Adeniyi-Jones@arm.com int index = 0; 67010027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 67110027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 67210027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 67310027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 67410027SChris.Adeniyi-Jones@arm.com} 67510027SChris.Adeniyi-Jones@arm.com 67610633Smichaelupton@gmail.com/// Target unlinkat() handler. 67710633Smichaelupton@gmail.comtemplate <class OS> 67810633Smichaelupton@gmail.comSyscallReturn 67910633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 68010633Smichaelupton@gmail.com ThreadContext *tc) 68110633Smichaelupton@gmail.com{ 68210633Smichaelupton@gmail.com int index = 0; 68310633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 68410633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 68510633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 68610633Smichaelupton@gmail.com 68710633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 68810633Smichaelupton@gmail.com} 68910633Smichaelupton@gmail.com 69010203SAli.Saidi@ARM.com/// Target facessat() handler 69110203SAli.Saidi@ARM.comtemplate <class OS> 69210203SAli.Saidi@ARM.comSyscallReturn 69310203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69410203SAli.Saidi@ARM.com ThreadContext *tc) 69510203SAli.Saidi@ARM.com{ 69610203SAli.Saidi@ARM.com int index = 0; 69710203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 69810203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 69910203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 70010203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 70110203SAli.Saidi@ARM.com} 70210203SAli.Saidi@ARM.com 70310203SAli.Saidi@ARM.com/// Target readlinkat() handler 70410203SAli.Saidi@ARM.comtemplate <class OS> 70510203SAli.Saidi@ARM.comSyscallReturn 70610203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70710203SAli.Saidi@ARM.com ThreadContext *tc) 70810203SAli.Saidi@ARM.com{ 70910203SAli.Saidi@ARM.com int index = 0; 71010203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 71110203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 71210203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 71310203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 71410203SAli.Saidi@ARM.com} 71510203SAli.Saidi@ARM.com 71610850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 71710850SGiacomo.Gabrielli@arm.comtemplate <class OS> 71810850SGiacomo.Gabrielli@arm.comSyscallReturn 71910850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 72010850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 72110850SGiacomo.Gabrielli@arm.com{ 72210850SGiacomo.Gabrielli@arm.com int index = 0; 72310850SGiacomo.Gabrielli@arm.com 72410850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 72510850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 72610850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 72710850SGiacomo.Gabrielli@arm.com 72810850SGiacomo.Gabrielli@arm.com std::string old_name; 72910850SGiacomo.Gabrielli@arm.com 73010850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 73110850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 73210850SGiacomo.Gabrielli@arm.com return -EFAULT; 73310850SGiacomo.Gabrielli@arm.com 73410850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 73510850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 73610850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 73710850SGiacomo.Gabrielli@arm.com 73810850SGiacomo.Gabrielli@arm.com std::string new_name; 73910850SGiacomo.Gabrielli@arm.com 74010850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 74110850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 74210850SGiacomo.Gabrielli@arm.com return -EFAULT; 74310850SGiacomo.Gabrielli@arm.com 74410850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 74510850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 74610850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 74710850SGiacomo.Gabrielli@arm.com 74810850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 74910850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 75010850SGiacomo.Gabrielli@arm.com} 75110850SGiacomo.Gabrielli@arm.com 7526640Svince@csl.cornell.edu/// Target sysinfo() handler. 7536640Svince@csl.cornell.edutemplate <class OS> 7546640Svince@csl.cornell.eduSyscallReturn 7556640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7566640Svince@csl.cornell.edu ThreadContext *tc) 7576640Svince@csl.cornell.edu{ 7586640Svince@csl.cornell.edu 7596701Sgblack@eecs.umich.edu int index = 0; 7606701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 76110793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 7626640Svince@csl.cornell.edu 76311758Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 76411758Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 76511758Sbrandon.potter@amd.com sysinfo->mem_unit = 1; 7666640Svince@csl.cornell.edu 7678706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7686640Svince@csl.cornell.edu 7696701Sgblack@eecs.umich.edu return 0; 7706640Svince@csl.cornell.edu} 771360SN/A 7721999SN/A/// Target chmod() handler. 7731999SN/Atemplate <class OS> 7741999SN/ASyscallReturn 7753114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7762680Sktlim@umich.edu ThreadContext *tc) 7771999SN/A{ 7781999SN/A std::string path; 7791999SN/A 7806701Sgblack@eecs.umich.edu int index = 0; 7818852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7826701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7831999SN/A return -EFAULT; 7846701Sgblack@eecs.umich.edu } 7851999SN/A 7866701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7871999SN/A mode_t hostMode = 0; 7881999SN/A 7891999SN/A // XXX translate mode flags via OS::something??? 7901999SN/A hostMode = mode; 7911999SN/A 7923669Sbinkertn@umich.edu // Adjust path for current working directory 7933669Sbinkertn@umich.edu path = process->fullPath(path); 7943669Sbinkertn@umich.edu 7951999SN/A // do the chmod 7961999SN/A int result = chmod(path.c_str(), hostMode); 7971999SN/A if (result < 0) 7982218SN/A return -errno; 7991999SN/A 8001999SN/A return 0; 8011999SN/A} 8021999SN/A 8031999SN/A 8041999SN/A/// Target fchmod() handler. 8051999SN/Atemplate <class OS> 8061999SN/ASyscallReturn 8073114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8082680Sktlim@umich.edu ThreadContext *tc) 8091999SN/A{ 8106701Sgblack@eecs.umich.edu int index = 0; 81110931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 81210931Sbrandon.potter@amd.com uint32_t mode = process->getSyscallArg(tc, index); 81310931Sbrandon.potter@amd.com 81410932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 81510931Sbrandon.potter@amd.com if (sim_fd < 0) 8161999SN/A return -EBADF; 8171999SN/A 8181999SN/A mode_t hostMode = 0; 8191999SN/A 8201999SN/A // XXX translate mode flags via OS::someting??? 8211999SN/A hostMode = mode; 8221999SN/A 8231999SN/A // do the fchmod 82410931Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 8251999SN/A if (result < 0) 8262218SN/A return -errno; 8271999SN/A 8281999SN/A return 0; 8291999SN/A} 8301999SN/A 8315877Shsul@eecs.umich.edu/// Target mremap() handler. 8325877Shsul@eecs.umich.edutemplate <class OS> 8335877Shsul@eecs.umich.eduSyscallReturn 8345877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8355877Shsul@eecs.umich.edu{ 8366701Sgblack@eecs.umich.edu int index = 0; 8376701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8386701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8396701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8406701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 84110027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 84210027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 84310027SChris.Adeniyi-Jones@arm.com 84410027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 84510027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8465877Shsul@eecs.umich.edu 84710318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 84810318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8495877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8505877Shsul@eecs.umich.edu return -EINVAL; 8515877Shsul@eecs.umich.edu } 8525877Shsul@eecs.umich.edu 85310486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 85410486Stjablin@gmail.com 8555877Shsul@eecs.umich.edu if (new_length > old_length) { 85610027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 85710027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8585877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8598601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8605877Shsul@eecs.umich.edu process->mmap_end += diff; 8615877Shsul@eecs.umich.edu return start; 8625877Shsul@eecs.umich.edu } else { 86310027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8645877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8655877Shsul@eecs.umich.edu return -ENOMEM; 8665877Shsul@eecs.umich.edu } else { 86710027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 86810027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 86910027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 87010027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 87110027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 87210027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8735877Shsul@eecs.umich.edu // add on the remaining unallocated pages 87410027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 87510027SChris.Adeniyi-Jones@arm.com new_length - old_length, 87610027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 87710027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 87810027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 87910027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 88010027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 88110027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 88210027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 88310027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 88410027SChris.Adeniyi-Jones@arm.com } 88510027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 88610027SChris.Adeniyi-Jones@arm.com return new_start; 8875877Shsul@eecs.umich.edu } 8885877Shsul@eecs.umich.edu } 8895877Shsul@eecs.umich.edu } else { 89010027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 89110027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 8928601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 89310027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 8945877Shsul@eecs.umich.edu } 8955877Shsul@eecs.umich.edu} 8961999SN/A 897378SN/A/// Target stat() handler. 898360SN/Atemplate <class OS> 8991450SN/ASyscallReturn 9003114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9012680Sktlim@umich.edu ThreadContext *tc) 902360SN/A{ 903360SN/A std::string path; 904360SN/A 9056701Sgblack@eecs.umich.edu int index = 0; 9068852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9076701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9086701Sgblack@eecs.umich.edu return -EFAULT; 9096701Sgblack@eecs.umich.edu } 9106701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 911360SN/A 9123669Sbinkertn@umich.edu // Adjust path for current working directory 9133669Sbinkertn@umich.edu path = process->fullPath(path); 9143669Sbinkertn@umich.edu 915360SN/A struct stat hostBuf; 916360SN/A int result = stat(path.c_str(), &hostBuf); 917360SN/A 918360SN/A if (result < 0) 9192218SN/A return -errno; 920360SN/A 9218706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 922360SN/A 9231458SN/A return 0; 924360SN/A} 925360SN/A 926360SN/A 9275074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9285074Ssaidi@eecs.umich.edutemplate <class OS> 9295074Ssaidi@eecs.umich.eduSyscallReturn 9305074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9315074Ssaidi@eecs.umich.edu ThreadContext *tc) 9325074Ssaidi@eecs.umich.edu{ 9335074Ssaidi@eecs.umich.edu std::string path; 9345074Ssaidi@eecs.umich.edu 9356701Sgblack@eecs.umich.edu int index = 0; 9368852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9376701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9385074Ssaidi@eecs.umich.edu return -EFAULT; 9396701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9405074Ssaidi@eecs.umich.edu 9415074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9425074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9435074Ssaidi@eecs.umich.edu 9445208Ssaidi@eecs.umich.edu#if NO_STAT64 9455208Ssaidi@eecs.umich.edu struct stat hostBuf; 9465208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9475208Ssaidi@eecs.umich.edu#else 9485074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9495074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9505208Ssaidi@eecs.umich.edu#endif 9515074Ssaidi@eecs.umich.edu 9525074Ssaidi@eecs.umich.edu if (result < 0) 9535074Ssaidi@eecs.umich.edu return -errno; 9545074Ssaidi@eecs.umich.edu 9558706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9565074Ssaidi@eecs.umich.edu 9575074Ssaidi@eecs.umich.edu return 0; 9585074Ssaidi@eecs.umich.edu} 9595074Ssaidi@eecs.umich.edu 9605074Ssaidi@eecs.umich.edu 96110027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 96210027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 96310027SChris.Adeniyi-Jones@arm.comSyscallReturn 96410027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 96510027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 96610027SChris.Adeniyi-Jones@arm.com{ 96710027SChris.Adeniyi-Jones@arm.com int index = 0; 96810027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 96910027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 97010793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 97110027SChris.Adeniyi-Jones@arm.com 97210027SChris.Adeniyi-Jones@arm.com std::string path; 97310027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 97410027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 97510027SChris.Adeniyi-Jones@arm.com return -EFAULT; 97610027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 97710027SChris.Adeniyi-Jones@arm.com 97810027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 97910027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 98010027SChris.Adeniyi-Jones@arm.com 98110027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 98210027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 98310027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 98410027SChris.Adeniyi-Jones@arm.com#else 98510027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 98610027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 98710027SChris.Adeniyi-Jones@arm.com#endif 98810027SChris.Adeniyi-Jones@arm.com 98910027SChris.Adeniyi-Jones@arm.com if (result < 0) 99010027SChris.Adeniyi-Jones@arm.com return -errno; 99110027SChris.Adeniyi-Jones@arm.com 99210027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 99310027SChris.Adeniyi-Jones@arm.com 99410027SChris.Adeniyi-Jones@arm.com return 0; 99510027SChris.Adeniyi-Jones@arm.com} 99610027SChris.Adeniyi-Jones@arm.com 99710027SChris.Adeniyi-Jones@arm.com 9981999SN/A/// Target fstat64() handler. 9991999SN/Atemplate <class OS> 10001999SN/ASyscallReturn 10013114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10022680Sktlim@umich.edu ThreadContext *tc) 10031999SN/A{ 10046701Sgblack@eecs.umich.edu int index = 0; 100510931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 10066701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 100710931Sbrandon.potter@amd.com 100810932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 100910931Sbrandon.potter@amd.com if (sim_fd < 0) 10101999SN/A return -EBADF; 10111999SN/A 10122764Sstever@eecs.umich.edu#if NO_STAT64 10132064SN/A struct stat hostBuf; 101410931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 10152064SN/A#else 10162064SN/A struct stat64 hostBuf; 101710931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 10182064SN/A#endif 10191999SN/A 10201999SN/A if (result < 0) 10212218SN/A return -errno; 10221999SN/A 102310931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10241999SN/A 10251999SN/A return 0; 10261999SN/A} 10271999SN/A 10281999SN/A 1029378SN/A/// Target lstat() handler. 1030360SN/Atemplate <class OS> 10311450SN/ASyscallReturn 10323114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10332680Sktlim@umich.edu ThreadContext *tc) 1034360SN/A{ 1035360SN/A std::string path; 1036360SN/A 10376701Sgblack@eecs.umich.edu int index = 0; 10388852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10396701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10406701Sgblack@eecs.umich.edu return -EFAULT; 10416701Sgblack@eecs.umich.edu } 10426701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1043360SN/A 10443669Sbinkertn@umich.edu // Adjust path for current working directory 10453669Sbinkertn@umich.edu path = process->fullPath(path); 10463669Sbinkertn@umich.edu 1047360SN/A struct stat hostBuf; 1048360SN/A int result = lstat(path.c_str(), &hostBuf); 1049360SN/A 1050360SN/A if (result < 0) 10511458SN/A return -errno; 1052360SN/A 10538706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1054360SN/A 10551458SN/A return 0; 1056360SN/A} 1057360SN/A 10581999SN/A/// Target lstat64() handler. 10591999SN/Atemplate <class OS> 10601999SN/ASyscallReturn 10613114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10622680Sktlim@umich.edu ThreadContext *tc) 10631999SN/A{ 10641999SN/A std::string path; 10651999SN/A 10666701Sgblack@eecs.umich.edu int index = 0; 10678852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10686701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10696701Sgblack@eecs.umich.edu return -EFAULT; 10706701Sgblack@eecs.umich.edu } 10716701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10721999SN/A 10733669Sbinkertn@umich.edu // Adjust path for current working directory 10743669Sbinkertn@umich.edu path = process->fullPath(path); 10753669Sbinkertn@umich.edu 10762764Sstever@eecs.umich.edu#if NO_STAT64 10772064SN/A struct stat hostBuf; 10782064SN/A int result = lstat(path.c_str(), &hostBuf); 10792064SN/A#else 10801999SN/A struct stat64 hostBuf; 10811999SN/A int result = lstat64(path.c_str(), &hostBuf); 10822064SN/A#endif 10831999SN/A 10841999SN/A if (result < 0) 10851999SN/A return -errno; 10861999SN/A 10878706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10881999SN/A 10891999SN/A return 0; 10901999SN/A} 10911999SN/A 1092378SN/A/// Target fstat() handler. 1093360SN/Atemplate <class OS> 10941450SN/ASyscallReturn 10953114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10962680Sktlim@umich.edu ThreadContext *tc) 1097360SN/A{ 10986701Sgblack@eecs.umich.edu int index = 0; 109910931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11006701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1101360SN/A 110211380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1103360SN/A 110410932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 110510931Sbrandon.potter@amd.com if (sim_fd < 0) 11061458SN/A return -EBADF; 1107360SN/A 1108360SN/A struct stat hostBuf; 110910931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1110360SN/A 1111360SN/A if (result < 0) 11121458SN/A return -errno; 1113360SN/A 111410931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11152021SN/A 11161458SN/A return 0; 1117360SN/A} 1118360SN/A 1119360SN/A 11201706SN/A/// Target statfs() handler. 11211706SN/Atemplate <class OS> 11221706SN/ASyscallReturn 11233114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11242680Sktlim@umich.edu ThreadContext *tc) 11251706SN/A{ 11261706SN/A std::string path; 11271706SN/A 11286701Sgblack@eecs.umich.edu int index = 0; 11298852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11306701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11316701Sgblack@eecs.umich.edu return -EFAULT; 11326701Sgblack@eecs.umich.edu } 11336701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11341706SN/A 11353669Sbinkertn@umich.edu // Adjust path for current working directory 11363669Sbinkertn@umich.edu path = process->fullPath(path); 11373669Sbinkertn@umich.edu 11381706SN/A struct statfs hostBuf; 11391706SN/A int result = statfs(path.c_str(), &hostBuf); 11401706SN/A 11411706SN/A if (result < 0) 11422218SN/A return -errno; 11431706SN/A 114411759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11451706SN/A 11461706SN/A return 0; 11471706SN/A} 11481706SN/A 11491706SN/A 11501706SN/A/// Target fstatfs() handler. 11511706SN/Atemplate <class OS> 11521706SN/ASyscallReturn 11533114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11542680Sktlim@umich.edu ThreadContext *tc) 11551706SN/A{ 11566701Sgblack@eecs.umich.edu int index = 0; 115710931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11586701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11591706SN/A 116010932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 116110931Sbrandon.potter@amd.com if (sim_fd < 0) 11621706SN/A return -EBADF; 11631706SN/A 11641706SN/A struct statfs hostBuf; 116510931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 11661706SN/A 11671706SN/A if (result < 0) 11682218SN/A return -errno; 11691706SN/A 117011759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11711706SN/A 11721706SN/A return 0; 11731706SN/A} 11741706SN/A 11751706SN/A 11761999SN/A/// Target writev() handler. 11771999SN/Atemplate <class OS> 11781999SN/ASyscallReturn 11793114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11802680Sktlim@umich.edu ThreadContext *tc) 11811999SN/A{ 11826701Sgblack@eecs.umich.edu int index = 0; 118310931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 118410931Sbrandon.potter@amd.com 118510932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 118610931Sbrandon.potter@amd.com if (sim_fd < 0) 11871999SN/A return -EBADF; 11881999SN/A 11898852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 11906701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 11916701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 11921999SN/A struct iovec hiov[count]; 11936227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 11941999SN/A typename OS::tgt_iovec tiov; 11952461SN/A 11968852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 11978852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 11988737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 11991999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 12008852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12018852Sandreas.hansson@arm.com hiov[i].iov_len); 12021999SN/A } 12031999SN/A 120410931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 12051999SN/A 12066227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12071999SN/A delete [] (char *)hiov[i].iov_base; 12081999SN/A 12091999SN/A if (result < 0) 12102218SN/A return -errno; 12111999SN/A 121210629Sjthestness@gmail.com return result; 12131999SN/A} 12141999SN/A 121511385Sbrandon.potter@amd.com/// Real mmap handler. 1216360SN/Atemplate <class OS> 12171450SN/ASyscallReturn 121811385Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 121911385Sbrandon.potter@amd.com bool is_mmap2) 1220360SN/A{ 12216701Sgblack@eecs.umich.edu int index = 0; 12226701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12236701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 122411383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 122511383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12268324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 122710486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1228360SN/A 122911385Sbrandon.potter@amd.com if (is_mmap2) 123011385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12319008Sgblack@eecs.umich.edu 123211383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 123311383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 123411383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 123511383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 123611383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 123711383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 123811383Sbrandon.potter@amd.com !length) { 123911383Sbrandon.potter@amd.com return -EINVAL; 124011383Sbrandon.potter@amd.com } 12418324Ssteve.reinhardt@amd.com 124211383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 124311383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 124411383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 124511383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 124611383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 124711383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 124811383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 124911383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 125011383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 125111383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 125211383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 125311383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 125411383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 125511383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 125611383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 125711383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 125811383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 125911383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 126011383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 126111383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 126211383Sbrandon.potter@amd.com // than we currently maintain. 126311383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 126411383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 126511383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 12668324Ssteve.reinhardt@amd.com } 12675877Shsul@eecs.umich.edu 126810486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 126910486Stjablin@gmail.com 127011383Sbrandon.potter@amd.com int sim_fd = -1; 127111383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 127211383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 127311624Smichael.lebeane@amd.com // Check for EmulatedDriver mmap 127411624Smichael.lebeane@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 127511624Smichael.lebeane@amd.com if (fde == NULL) 127611624Smichael.lebeane@amd.com return -EBADF; 127711624Smichael.lebeane@amd.com 127811624Smichael.lebeane@amd.com if (fde->driver != NULL) { 127911624Smichael.lebeane@amd.com return fde->driver->mmap(p, tc, start, length, prot, 128011624Smichael.lebeane@amd.com tgt_flags, tgt_fd, offset); 128111624Smichael.lebeane@amd.com } 128211624Smichael.lebeane@amd.com sim_fd = fde->fd; 128311624Smichael.lebeane@amd.com 128411383Sbrandon.potter@amd.com if (sim_fd < 0) 128511383Sbrandon.potter@amd.com return -EBADF; 1286360SN/A 128711383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 128811383Sbrandon.potter@amd.com sim_fd, offset); 12898600Ssteve.reinhardt@amd.com 129011383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 129111383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 129211383Sbrandon.potter@amd.com return -errno; 12938600Ssteve.reinhardt@amd.com } 12942544SN/A } 12952544SN/A 129611383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 129711383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 129811383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 129911386Ssteve.reinhardt@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 130011386Ssteve.reinhardt@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 130111383Sbrandon.potter@amd.com } 130211383Sbrandon.potter@amd.com 130311383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 130411383Sbrandon.potter@amd.com start, start + length - 1); 130511383Sbrandon.potter@amd.com 130611383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 130711383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 130811383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 130911383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 131011383Sbrandon.potter@amd.com if (clobber) { 131111383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 131211383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 131311383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 131411383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 131511383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13168600Ssteve.reinhardt@amd.com } 13176672Sgblack@eecs.umich.edu } 13188600Ssteve.reinhardt@amd.com 131911383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 132011383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 132111383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 13228601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 13232544SN/A 132411383Sbrandon.potter@amd.com // Transfer content into target address space. 132511383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 132611383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 132711383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 132811383Sbrandon.potter@amd.com // with something like: 132911383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 133011383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 133111383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 133211383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 133311383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 133411383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 133511383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 133611383Sbrandon.potter@amd.com } else { 133711383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 133811383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 133911383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 134011383Sbrandon.potter@amd.com // the host into the target address space. 134111383Sbrandon.potter@amd.com struct stat file_stat; 134211383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 134311383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 134411383Sbrandon.potter@amd.com 134511383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 134611383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 134711383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 134811383Sbrandon.potter@amd.com // on the specified offset into the file. 134911383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 135011383Sbrandon.potter@amd.com length); 135111383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 135211383Sbrandon.potter@amd.com 135311383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 135411383Sbrandon.potter@amd.com munmap(pmap, length); 135511383Sbrandon.potter@amd.com 135611392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 135711392Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 135811392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 135911392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 136011392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 136111392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 136211392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 136311392Sbrandon.potter@amd.com if (interpreter) { 136411392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 136511392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 136611392Sbrandon.potter@amd.com 136711392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 136811392Sbrandon.potter@amd.com 136911392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 137011392Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 137111392Sbrandon.potter@amd.com 137211392Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(fde->filename); 137311392Sbrandon.potter@amd.com 137411392Sbrandon.potter@amd.com if (lib) { 137511392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 137611392Sbrandon.potter@amd.com lib->textBase(), start); 137711392Sbrandon.potter@amd.com } 137811392Sbrandon.potter@amd.com } 137911392Sbrandon.potter@amd.com } 138011392Sbrandon.potter@amd.com 138111383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 138211383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 138311383Sbrandon.potter@amd.com // execution (hopefully). 138411383Sbrandon.potter@amd.com } 138511383Sbrandon.potter@amd.com 13861458SN/A return start; 1387360SN/A} 1388360SN/A 138911593Santhony.gutierrez@amd.comtemplate <class OS> 139011593Santhony.gutierrez@amd.comSyscallReturn 139111593Santhony.gutierrez@amd.compwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 139211593Santhony.gutierrez@amd.com{ 139311593Santhony.gutierrez@amd.com int index = 0; 139411593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 139511593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 139611593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 139711593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 139811593Santhony.gutierrez@amd.com 139911593Santhony.gutierrez@amd.com int sim_fd = p->getSimFD(tgt_fd); 140011593Santhony.gutierrez@amd.com if (sim_fd < 0) 140111593Santhony.gutierrez@amd.com return -EBADF; 140211593Santhony.gutierrez@amd.com 140311593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 140411593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 140511593Santhony.gutierrez@amd.com 140611594Santhony.gutierrez@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 140711593Santhony.gutierrez@amd.com 140811593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 140911593Santhony.gutierrez@amd.com} 141011593Santhony.gutierrez@amd.com 141111385Sbrandon.potter@amd.com/// Target mmap() handler. 141211385Sbrandon.potter@amd.comtemplate <class OS> 141311385Sbrandon.potter@amd.comSyscallReturn 141411385Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 141511385Sbrandon.potter@amd.com{ 141611385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 141711385Sbrandon.potter@amd.com} 141811385Sbrandon.potter@amd.com 141911385Sbrandon.potter@amd.com/// Target mmap2() handler. 142011385Sbrandon.potter@amd.comtemplate <class OS> 142111385Sbrandon.potter@amd.comSyscallReturn 142211385Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 142311385Sbrandon.potter@amd.com{ 142411385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 142511385Sbrandon.potter@amd.com} 142611385Sbrandon.potter@amd.com 1427378SN/A/// Target getrlimit() handler. 1428360SN/Atemplate <class OS> 14291450SN/ASyscallReturn 14303114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14312680Sktlim@umich.edu ThreadContext *tc) 1432360SN/A{ 14336701Sgblack@eecs.umich.edu int index = 0; 14346701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 14356701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1436360SN/A 1437360SN/A switch (resource) { 14382064SN/A case OS::TGT_RLIMIT_STACK: 14395877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14402064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14418737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14428737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14432064SN/A break; 1444360SN/A 14455877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 14465877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 14475877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14488737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14498737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14505877Shsul@eecs.umich.edu break; 14515877Shsul@eecs.umich.edu 14522064SN/A default: 145310794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 145410794Sbrandon.potter@amd.com return -EINVAL; 14552064SN/A break; 1456360SN/A } 1457360SN/A 14588706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 14591458SN/A return 0; 1460360SN/A} 1461360SN/A 146210796Sbrandon.potter@amd.com/// Target clock_gettime() function. 146310796Sbrandon.potter@amd.comtemplate <class OS> 146410796Sbrandon.potter@amd.comSyscallReturn 146510796Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 146610796Sbrandon.potter@amd.com{ 146710796Sbrandon.potter@amd.com int index = 1; 146810796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 146910796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 147010796Sbrandon.potter@amd.com 147110796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 147210796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 147310796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 147410796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 147510796Sbrandon.potter@amd.com 147610796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 147710796Sbrandon.potter@amd.com 147810796Sbrandon.potter@amd.com return 0; 147910796Sbrandon.potter@amd.com} 148010796Sbrandon.potter@amd.com 148111337SMichael.Lebeane@amd.com/// Target clock_getres() function. 148211337SMichael.Lebeane@amd.comtemplate <class OS> 148311337SMichael.Lebeane@amd.comSyscallReturn 148411337SMichael.Lebeane@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 148511337SMichael.Lebeane@amd.com{ 148611337SMichael.Lebeane@amd.com int index = 1; 148711337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 148811337SMichael.Lebeane@amd.com 148911337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 149011337SMichael.Lebeane@amd.com tp->tv_sec = 0; 149111337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 149211337SMichael.Lebeane@amd.com 149311337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 149411337SMichael.Lebeane@amd.com 149511337SMichael.Lebeane@amd.com return 0; 149611337SMichael.Lebeane@amd.com} 149711337SMichael.Lebeane@amd.com 1498378SN/A/// Target gettimeofday() handler. 1499360SN/Atemplate <class OS> 15001450SN/ASyscallReturn 15013114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15022680Sktlim@umich.edu ThreadContext *tc) 1503360SN/A{ 15046701Sgblack@eecs.umich.edu int index = 0; 15056701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1506360SN/A 150710796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1508360SN/A tp->tv_sec += seconds_since_epoch; 15096109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 15106109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1511360SN/A 15128706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1513360SN/A 15141458SN/A return 0; 1515360SN/A} 1516360SN/A 1517360SN/A 15181999SN/A/// Target utimes() handler. 15191999SN/Atemplate <class OS> 15201999SN/ASyscallReturn 15213114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15222680Sktlim@umich.edu ThreadContext *tc) 15231999SN/A{ 15241999SN/A std::string path; 15251999SN/A 15266701Sgblack@eecs.umich.edu int index = 0; 15278852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 15286701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 15296701Sgblack@eecs.umich.edu return -EFAULT; 15306701Sgblack@eecs.umich.edu } 15311999SN/A 15326701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 15336701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 15348706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 15351999SN/A 15361999SN/A struct timeval hostTimeval[2]; 15371999SN/A for (int i = 0; i < 2; ++i) 15381999SN/A { 15398737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15408737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15411999SN/A } 15423669Sbinkertn@umich.edu 15433669Sbinkertn@umich.edu // Adjust path for current working directory 15443669Sbinkertn@umich.edu path = process->fullPath(path); 15453669Sbinkertn@umich.edu 15461999SN/A int result = utimes(path.c_str(), hostTimeval); 15471999SN/A 15481999SN/A if (result < 0) 15491999SN/A return -errno; 15501999SN/A 15511999SN/A return 0; 15521999SN/A} 1553378SN/A/// Target getrusage() function. 1554360SN/Atemplate <class OS> 15551450SN/ASyscallReturn 15563114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15572680Sktlim@umich.edu ThreadContext *tc) 1558360SN/A{ 15596701Sgblack@eecs.umich.edu int index = 0; 15606701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 15616701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1562360SN/A 15633670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 15643670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1565360SN/A rup->ru_stime.tv_sec = 0; 1566360SN/A rup->ru_stime.tv_usec = 0; 1567360SN/A rup->ru_maxrss = 0; 1568360SN/A rup->ru_ixrss = 0; 1569360SN/A rup->ru_idrss = 0; 1570360SN/A rup->ru_isrss = 0; 1571360SN/A rup->ru_minflt = 0; 1572360SN/A rup->ru_majflt = 0; 1573360SN/A rup->ru_nswap = 0; 1574360SN/A rup->ru_inblock = 0; 1575360SN/A rup->ru_oublock = 0; 1576360SN/A rup->ru_msgsnd = 0; 1577360SN/A rup->ru_msgrcv = 0; 1578360SN/A rup->ru_nsignals = 0; 1579360SN/A rup->ru_nvcsw = 0; 1580360SN/A rup->ru_nivcsw = 0; 1581360SN/A 15823670Sbinkertn@umich.edu switch (who) { 15833670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 158410796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 15858737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 15868737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 15873670Sbinkertn@umich.edu break; 15883670Sbinkertn@umich.edu 15893670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 15903670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 15913670Sbinkertn@umich.edu break; 15923670Sbinkertn@umich.edu 15933670Sbinkertn@umich.edu default: 15943670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 15953670Sbinkertn@umich.edu // plow ahead 15963670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 15973670Sbinkertn@umich.edu who); 15983670Sbinkertn@umich.edu } 15993670Sbinkertn@umich.edu 16008706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1601360SN/A 16021458SN/A return 0; 1603360SN/A} 1604360SN/A 16056683Stjones1@inf.ed.ac.uk/// Target times() function. 16066683Stjones1@inf.ed.ac.uktemplate <class OS> 16076683Stjones1@inf.ed.ac.ukSyscallReturn 16086683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16096683Stjones1@inf.ed.ac.uk ThreadContext *tc) 16106683Stjones1@inf.ed.ac.uk{ 16116701Sgblack@eecs.umich.edu int index = 0; 16126701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 16136683Stjones1@inf.ed.ac.uk 16146683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 16157823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16166683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 16176683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 16186683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 16196683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 16206683Stjones1@inf.ed.ac.uk 16216683Stjones1@inf.ed.ac.uk // Convert to host endianness 16228737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 16236683Stjones1@inf.ed.ac.uk 16246683Stjones1@inf.ed.ac.uk // Write back 16258706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 16266683Stjones1@inf.ed.ac.uk 16276683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 16286683Stjones1@inf.ed.ac.uk return clocks; 16296683Stjones1@inf.ed.ac.uk} 16302553SN/A 16316684Stjones1@inf.ed.ac.uk/// Target time() function. 16326684Stjones1@inf.ed.ac.uktemplate <class OS> 16336684Stjones1@inf.ed.ac.ukSyscallReturn 16346684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16356684Stjones1@inf.ed.ac.uk ThreadContext *tc) 16366684Stjones1@inf.ed.ac.uk{ 16376684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 163810796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 16396684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 16406684Stjones1@inf.ed.ac.uk 16416701Sgblack@eecs.umich.edu int index = 0; 16426701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 164311321Ssteve.reinhardt@amd.com if (taddr != 0) { 16446684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 16458737Skoansin.tan@gmail.com t = TheISA::htog(t); 16468852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 16478852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16486684Stjones1@inf.ed.ac.uk } 16496684Stjones1@inf.ed.ac.uk return sec; 16506684Stjones1@inf.ed.ac.uk} 16512553SN/A 16522553SN/A 16531354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1654