syscall_emul.hh revision 11856
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 482764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 499202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 509202Spalle@lyckegaard.dk defined(__NetBSD__)) 512064SN/A 5211799Sbrandon.potter@amd.com#define NO_STATFS (defined(__APPLE__) || defined(__OpenBSD__) || \ 5311799Sbrandon.potter@amd.com defined(__FreeBSD__) || defined(__NetBSD__)) 5411799Sbrandon.potter@amd.com 5511799Sbrandon.potter@amd.com#define NO_FALLOCATE (defined(__APPLE__) || defined(__OpenBSD__) || \ 5611799Sbrandon.potter@amd.com defined(__FreeBSD__) || defined(__NetBSD__)) 5711799Sbrandon.potter@amd.com 58360SN/A/// 59360SN/A/// @file syscall_emul.hh 60360SN/A/// 61360SN/A/// This file defines objects used to emulate syscalls from the target 62360SN/A/// application on the host machine. 63360SN/A 641809SN/A#ifdef __CYGWIN32__ 6511800Sbrandon.potter@amd.com#include <sys/fcntl.h> 6611392Sbrandon.potter@amd.com 671809SN/A#endif 6811392Sbrandon.potter@amd.com#include <fcntl.h> 6911383Sbrandon.potter@amd.com#include <sys/mman.h> 703113Sgblack@eecs.umich.edu#include <sys/stat.h> 7111799Sbrandon.potter@amd.com#if (NO_STATFS == 0) 7211759Sbrandon.potter@amd.com#include <sys/statfs.h> 7311812Sbaz21@cam.ac.uk#else 7411812Sbaz21@cam.ac.uk#include <sys/mount.h> 7511799Sbrandon.potter@amd.com#endif 768229Snate@binkert.org#include <sys/time.h> 778229Snate@binkert.org#include <sys/uio.h> 7811594Santhony.gutierrez@amd.com#include <unistd.h> 797075Snate@binkert.org 808229Snate@binkert.org#include <cerrno> 8111856Sbrandon.potter@amd.com#include <memory> 827075Snate@binkert.org#include <string> 83360SN/A 8411800Sbrandon.potter@amd.com#include "base/intmath.hh" 8511392Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 862462SN/A#include "base/misc.hh" 871354SN/A#include "base/trace.hh" 886216Snate@binkert.org#include "base/types.hh" 896658Snate@binkert.org#include "config/the_isa.hh" 902474SN/A#include "cpu/base.hh" 912680Sktlim@umich.edu#include "cpu/thread_context.hh" 928229Snate@binkert.org#include "mem/page_table.hh" 9310496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 948229Snate@binkert.org#include "sim/process.hh" 9511794Sbrandon.potter@amd.com#include "sim/syscall_debug_macros.hh" 9610497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 9711794Sbrandon.potter@amd.com#include "sim/syscall_return.hh" 98360SN/A 9911794Sbrandon.potter@amd.comclass SyscallDesc; 100360SN/A 101360SN/A////////////////////////////////////////////////////////////////////// 102360SN/A// 103360SN/A// The following emulation functions are generic enough that they 104360SN/A// don't need to be recompiled for different emulated OS's. They are 105360SN/A// defined in sim/syscall_emul.cc. 106360SN/A// 107360SN/A////////////////////////////////////////////////////////////////////// 108360SN/A 109360SN/A 110378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1111706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 11211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 113378SN/A 114378SN/A/// Handler for unimplemented syscalls that we never intend to 115378SN/A/// implement (signal handling, etc.) and should not affect the correct 116378SN/A/// behavior of the program. Print a warning only if the appropriate 117378SN/A/// trace flag is enabled. Return success to the target program. 1181706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 11911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 120360SN/A 12111760Sbrandon.potter@amd.com// Target fallocateFunc() handler. 12211760Sbrandon.potter@amd.comSyscallReturn fallocateFunc(SyscallDesc *desc, int num, 12311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 12411760Sbrandon.potter@amd.com 1256109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1261706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 12711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 128378SN/A 1296109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1306109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 13111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1326109Ssanchezd@stanford.edu 133378SN/A/// Target getpagesize() handler. 1341706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 13511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 136378SN/A 1375748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1385748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 13911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 140378SN/A 141378SN/A/// Target close() handler. 1421706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 14311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 144378SN/A 145378SN/A/// Target read() handler. 1461706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 14711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 148378SN/A 149378SN/A/// Target write() handler. 1501706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 15111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 152378SN/A 153378SN/A/// Target lseek() handler. 1541706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 15511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 156378SN/A 1574118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1584118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 15911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1604118Sgblack@eecs.umich.edu 161378SN/A/// Target munmap() handler. 1621706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 16311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 164378SN/A 165378SN/A/// Target gethostname() handler. 1661706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 16711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 168360SN/A 1695513SMichael.Adler@intel.com/// Target getcwd() handler. 1705513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 17111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1725513SMichael.Adler@intel.com 17310203SAli.Saidi@ARM.com/// Target readlink() handler. 17410203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 17511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 17610203SAli.Saidi@ARM.com int index = 0); 1775513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 17811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1795513SMichael.Adler@intel.com 180511SN/A/// Target unlink() handler. 18110633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 18211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 18310633Smichaelupton@gmail.com int index); 1841706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 18511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 186511SN/A 1875513SMichael.Adler@intel.com/// Target mkdir() handler. 1885513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 18911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1905513SMichael.Adler@intel.com 191511SN/A/// Target rename() handler. 1921706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 19311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1941706SN/A 1951706SN/A 1961706SN/A/// Target truncate() handler. 1971706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 19811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1991706SN/A 2001706SN/A 2011706SN/A/// Target ftruncate() handler. 2021706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 20311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2041706SN/A 205511SN/A 2066703Svince@csl.cornell.edu/// Target truncate64() handler. 2076703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 20811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2096703Svince@csl.cornell.edu 2106685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2116685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 21211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2136685Stjones1@inf.ed.ac.uk 2146685Stjones1@inf.ed.ac.uk 2155513SMichael.Adler@intel.com/// Target umask() handler. 2165513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 21711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2185513SMichael.Adler@intel.com 2195513SMichael.Adler@intel.com 2201999SN/A/// Target chown() handler. 2211999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 22211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2231999SN/A 2241999SN/A 2251999SN/A/// Target fchown() handler. 2261999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 22711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2281999SN/A 2293079Sstever@eecs.umich.edu/// Target dup() handler. 2303079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 23111851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2323079Sstever@eecs.umich.edu 2332093SN/A/// Target fnctl() handler. 2342093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 23511851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2362093SN/A 2372687Sksewell@umich.edu/// Target fcntl64() handler. 2382687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 23911851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2402687Sksewell@umich.edu 2412238SN/A/// Target setuid() handler. 2422238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 24311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2442238SN/A 2452238SN/A/// Target getpid() handler. 2462238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 24711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2482238SN/A 2492238SN/A/// Target getuid() handler. 2502238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 25111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2522238SN/A 2532238SN/A/// Target getgid() handler. 2542238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 25511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2562238SN/A 2572238SN/A/// Target getppid() handler. 2582238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 25911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2602238SN/A 2612238SN/A/// Target geteuid() handler. 2622238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 26311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2642238SN/A 2652238SN/A/// Target getegid() handler. 2662238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 26711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2682238SN/A 2696109Ssanchezd@stanford.edu/// Target clone() handler. 2706109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 27111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2722238SN/A 2739455Smitch.hayenga+gem5@gmail.com/// Target access() handler 2749455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 27511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 27610203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 27711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 27811851Sbrandon.potter@amd.com int index); 2799455Smitch.hayenga+gem5@gmail.com 2809112Smarc.orr@gmail.com/// Futex system call 2819112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 2829112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 2839112Smarc.orr@gmail.comtemplate <class OS> 2849112Smarc.orr@gmail.comSyscallReturn 28511851Sbrandon.potter@amd.comfutexFunc(SyscallDesc *desc, int callnum, Process *process, 2869112Smarc.orr@gmail.com ThreadContext *tc) 2879112Smarc.orr@gmail.com{ 2889112Smarc.orr@gmail.com int index_uaddr = 0; 2899112Smarc.orr@gmail.com int index_op = 1; 2909112Smarc.orr@gmail.com int index_val = 2; 2919112Smarc.orr@gmail.com int index_timeout = 3; 2929112Smarc.orr@gmail.com 2939112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 2949112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 2959112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 2969112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 2979112Smarc.orr@gmail.com 2989112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 2999112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3009112Smarc.orr@gmail.com 3019112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3029112Smarc.orr@gmail.com uaddr, op, val); 3039112Smarc.orr@gmail.com 3049238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3059112Smarc.orr@gmail.com 3069112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3079112Smarc.orr@gmail.com if (timeout != 0) { 3089112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3099112Smarc.orr@gmail.com "we'll wait indefinitely"); 3109112Smarc.orr@gmail.com } 3119112Smarc.orr@gmail.com 3129112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3139112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3149112Smarc.orr@gmail.com int mem_val = *((int *)buf); 31511367Sandreas.hansson@arm.com delete[] buf; 3169112Smarc.orr@gmail.com 31711321Ssteve.reinhardt@amd.com if (val != mem_val) { 3189112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3199112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3209112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3219112Smarc.orr@gmail.com } 3229112Smarc.orr@gmail.com 3239112Smarc.orr@gmail.com // Queue the thread context 3249112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3259112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3269112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3279112Smarc.orr@gmail.com } else { 3289112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3299112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3309112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3319112Smarc.orr@gmail.com } 3329112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3339112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3349112Smarc.orr@gmail.com "thread context\n"); 3359112Smarc.orr@gmail.com tc->suspend(); 3369112Smarc.orr@gmail.com return 0; 3379112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3389112Smarc.orr@gmail.com int wokenUp = 0; 3399112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3409112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3419112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3429112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3439112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3449112Smarc.orr@gmail.com tcWaitList->pop_front(); 3459112Smarc.orr@gmail.com wokenUp++; 3469112Smarc.orr@gmail.com } 34711321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3489112Smarc.orr@gmail.com futex_map.erase(uaddr); 3499112Smarc.orr@gmail.com delete tcWaitList; 3509112Smarc.orr@gmail.com } 3519112Smarc.orr@gmail.com } 3529112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3539112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3549112Smarc.orr@gmail.com return wokenUp; 3559112Smarc.orr@gmail.com } else { 3569238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3579112Smarc.orr@gmail.com return 0; 3589112Smarc.orr@gmail.com } 3599112Smarc.orr@gmail.com 3609112Smarc.orr@gmail.com} 3619112Smarc.orr@gmail.com 3622238SN/A 3632238SN/A/// Pseudo Funcs - These functions use a different return convension, 3642238SN/A/// returning a second value in a register other than the normal return register 3652238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 36611851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 3672238SN/A 3682238SN/A/// Target getpidPseudo() handler. 3692238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 37011851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3712238SN/A 3722238SN/A/// Target getuidPseudo() handler. 3732238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 37411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3752238SN/A 3762238SN/A/// Target getgidPseudo() handler. 3772238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 37811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3792238SN/A 3802238SN/A 3811354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 3821354SN/Aconst int one_million = 1000000; 38310796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 38410796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 3851354SN/A 3861354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3871354SN/A/// by my reckoning. We want to keep this a constant (not use the 3881354SN/A/// real-world time) to keep simulations repeatable. 3891354SN/Aconst unsigned seconds_since_epoch = 1000000000; 3901354SN/A 3911354SN/A/// Helper function to convert current elapsed time to seconds and 3921354SN/A/// microseconds. 3931354SN/Atemplate <class T1, class T2> 3941354SN/Avoid 39510796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 3961354SN/A{ 39710796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 3981354SN/A sec = elapsed_usecs / one_million; 3991354SN/A usec = elapsed_usecs % one_million; 4001354SN/A} 4011354SN/A 40210796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 40310796Sbrandon.potter@amd.com/// nanoseconds. 40410796Sbrandon.potter@amd.comtemplate <class T1, class T2> 40510796Sbrandon.potter@amd.comvoid 40610796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 40710796Sbrandon.potter@amd.com{ 40810796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 40910796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 41010796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 41110796Sbrandon.potter@amd.com} 41210796Sbrandon.potter@amd.com 413360SN/A////////////////////////////////////////////////////////////////////// 414360SN/A// 415360SN/A// The following emulation functions are generic, but need to be 416360SN/A// templated to account for differences in types, constants, etc. 417360SN/A// 418360SN/A////////////////////////////////////////////////////////////////////// 419360SN/A 42011759Sbrandon.potter@amd.com typedef struct statfs hst_statfs; 4213113Sgblack@eecs.umich.edu#if NO_STAT64 4223113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4233113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4243113Sgblack@eecs.umich.edu#else 4253113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4263113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4273113Sgblack@eecs.umich.edu#endif 4283113Sgblack@eecs.umich.edu 4293113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4303113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4313113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4323113Sgblack@eecs.umich.edu 4333113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4343113Sgblack@eecs.umich.edustatic void 4353113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4363113Sgblack@eecs.umich.edu{ 4374189Sgblack@eecs.umich.edu using namespace TheISA; 4384189Sgblack@eecs.umich.edu 4393113Sgblack@eecs.umich.edu if (fakeTTY) 4403113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4413113Sgblack@eecs.umich.edu else 4423113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4438737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4443113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4458737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4463277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4475515SMichael.Adler@intel.com if (fakeTTY) { 4485515SMichael.Adler@intel.com // Claim to be a character device 4495515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4505515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4515515SMichael.Adler@intel.com } 4528737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4533277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4548737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4553277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4568737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4573277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4588737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4593113Sgblack@eecs.umich.edu if (fakeTTY) 4603113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4613113Sgblack@eecs.umich.edu else 4623113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4638737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4643113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4658737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4663114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4678737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4683114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4698737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4703114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4718737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 4724061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4734061Sgblack@eecs.umich.edu // consistently across different hosts. 4744061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4758737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4763113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4778737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4783113Sgblack@eecs.umich.edu} 4793113Sgblack@eecs.umich.edu 4803113Sgblack@eecs.umich.edu// Same for stat64 4813113Sgblack@eecs.umich.edu 4823113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 4833113Sgblack@eecs.umich.edustatic void 4843113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4853113Sgblack@eecs.umich.edu{ 4864189Sgblack@eecs.umich.edu using namespace TheISA; 4874189Sgblack@eecs.umich.edu 4883113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4893113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4903113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 4918737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 4923113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 4938737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 4943113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 4958737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 4963113Sgblack@eecs.umich.edu#else 4973113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 4983113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 4993113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5003113Sgblack@eecs.umich.edu#endif 5013113Sgblack@eecs.umich.edu} 5023113Sgblack@eecs.umich.edu 5033113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5043113Sgblack@eecs.umich.edutemplate<class OS> 5053113Sgblack@eecs.umich.edustatic void 5068852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5073113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5083113Sgblack@eecs.umich.edu{ 5093113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5103113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5113113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5123113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5133113Sgblack@eecs.umich.edu} 5143113Sgblack@eecs.umich.edu 5153113Sgblack@eecs.umich.edutemplate<class OS> 5163113Sgblack@eecs.umich.edustatic void 5178852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5183113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5193113Sgblack@eecs.umich.edu{ 5203113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5213113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5226686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5233113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5243113Sgblack@eecs.umich.edu} 5253113Sgblack@eecs.umich.edu 52611759Sbrandon.potter@amd.comtemplate <class OS> 52711759Sbrandon.potter@amd.comstatic void 52811759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 52911759Sbrandon.potter@amd.com hst_statfs *host) 53011759Sbrandon.potter@amd.com{ 53111759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 53211759Sbrandon.potter@amd.com 53311812Sbaz21@cam.ac.uk tgt->f_type = TheISA::htog(host->f_type); 53411812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 53511812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_iosize); 53611759Sbrandon.potter@amd.com#else 53711812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_bsize); 53811759Sbrandon.potter@amd.com#endif 53911759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 54011759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 54111759Sbrandon.potter@amd.com tgt->f_bavail = TheISA::htog(host->f_bavail); 54211759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 54311759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 54411759Sbrandon.potter@amd.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 54511812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 54611812Sbaz21@cam.ac.uk tgt->f_namelen = TheISA::htog(host->f_namemax); 54711812Sbaz21@cam.ac.uk tgt->f_frsize = TheISA::htog(host->f_bsize); 54811812Sbaz21@cam.ac.uk#elif defined(__APPLE__) 54911812Sbaz21@cam.ac.uk tgt->f_namelen = 0; 55011812Sbaz21@cam.ac.uk tgt->f_frsize = 0; 55111812Sbaz21@cam.ac.uk#else 55211759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 55311759Sbrandon.potter@amd.com tgt->f_frsize = TheISA::htog(host->f_frsize); 55411812Sbaz21@cam.ac.uk#endif 55511812Sbaz21@cam.ac.uk#if defined(__linux__) 55611759Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 55711812Sbaz21@cam.ac.uk#else 55811812Sbaz21@cam.ac.uk /* 55911812Sbaz21@cam.ac.uk * The fields are different sizes per OS. Don't bother with 56011812Sbaz21@cam.ac.uk * f_spare or f_reserved on non-Linux for now. 56111812Sbaz21@cam.ac.uk */ 56211812Sbaz21@cam.ac.uk memset(&tgt->f_spare, 0, sizeof(tgt->f_spare)); 56311812Sbaz21@cam.ac.uk#endif 56411759Sbrandon.potter@amd.com 56511759Sbrandon.potter@amd.com tgt.copyOut(mem); 56611759Sbrandon.potter@amd.com} 56711759Sbrandon.potter@amd.com 568378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 569378SN/A/// only to find out if their stdout is a tty, to determine whether to 5709141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5719141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 572360SN/Atemplate <class OS> 5731450SN/ASyscallReturn 57411856Sbrandon.potter@amd.comioctlFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 575360SN/A{ 5766701Sgblack@eecs.umich.edu int index = 0; 57711856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 57811856Sbrandon.potter@amd.com unsigned req = p->getSyscallArg(tc, index); 579360SN/A 58010930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 581360SN/A 58211856Sbrandon.potter@amd.com if (OS::isTtyReq(req)) 58311856Sbrandon.potter@amd.com return -ENOTTY; 58410496Ssteve.reinhardt@amd.com 58511856Sbrandon.potter@amd.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>((*p->fds)[tgt_fd]); 58611856Sbrandon.potter@amd.com if (!dfdp) 5871458SN/A return -EBADF; 588360SN/A 58911856Sbrandon.potter@amd.com /** 59011856Sbrandon.potter@amd.com * If the driver is valid, issue the ioctl through it. Otherwise, 59111856Sbrandon.potter@amd.com * there's an implicit assumption that the device is a TTY type and we 59211856Sbrandon.potter@amd.com * return that we do not have a valid TTY. 59311856Sbrandon.potter@amd.com */ 59411856Sbrandon.potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 59511856Sbrandon.potter@amd.com if (emul_driver) 59611856Sbrandon.potter@amd.com return emul_driver->ioctl(p, tc, req); 59710496Ssteve.reinhardt@amd.com 59811856Sbrandon.potter@amd.com /** 59911856Sbrandon.potter@amd.com * For lack of a better return code, return ENOTTY. Ideally, we should 60011856Sbrandon.potter@amd.com * return something better here, but at least we issue the warning. 60111856Sbrandon.potter@amd.com */ 60211856Sbrandon.potter@amd.com warn("Unsupported ioctl call (return ENOTTY): ioctl(%d, 0x%x, ...) @ \n", 60310930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 6049141Smarc.orr@gmail.com return -ENOTTY; 605360SN/A} 606360SN/A 607360SN/Atemplate <class OS> 60810027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 60911851Sbrandon.potter@amd.comopenFunc(SyscallDesc *desc, int callnum, Process *process, 61010027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 611360SN/A{ 612360SN/A std::string path; 613360SN/A 6148852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 6156701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6161458SN/A return -EFAULT; 617360SN/A 6186701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6196701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 620360SN/A int hostFlags = 0; 621360SN/A 622360SN/A // translate open flags 623360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 624360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 625360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 626360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 627360SN/A } 628360SN/A } 629360SN/A 630360SN/A // any target flags left? 631360SN/A if (tgtFlags != 0) 6321706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 633360SN/A 634360SN/A#ifdef __CYGWIN32__ 635360SN/A hostFlags |= O_BINARY; 636360SN/A#endif 637360SN/A 6383669Sbinkertn@umich.edu // Adjust path for current working directory 6393669Sbinkertn@umich.edu path = process->fullPath(path); 6403669Sbinkertn@umich.edu 6411706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6421706SN/A 64310496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 64410496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 64510496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 64610496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 64710496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 64810496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 64910496Ssteve.reinhardt@amd.com return -ENOENT; 65010496Ssteve.reinhardt@amd.com } 65110496Ssteve.reinhardt@amd.com 65210496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 65311856Sbrandon.potter@amd.com if (drv) { 65410496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 65510496Ssteve.reinhardt@amd.com // process if necessary. 65610496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 65710496Ssteve.reinhardt@amd.com } 65810496Ssteve.reinhardt@amd.com 65910496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 66010496Ssteve.reinhardt@amd.com // /dev/zero 66110496Ssteve.reinhardt@amd.com } 66210496Ssteve.reinhardt@amd.com 6635795Ssaidi@eecs.umich.edu int fd; 6649143Ssteve.reinhardt@amd.com int local_errno; 6659142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6669142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6679143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6685795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6699143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6705795Ssaidi@eecs.umich.edu } else { 6715795Ssaidi@eecs.umich.edu // open the file 6725795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6739143Ssteve.reinhardt@amd.com local_errno = errno; 6745795Ssaidi@eecs.umich.edu } 675360SN/A 6769143Ssteve.reinhardt@amd.com if (fd == -1) 6779143Ssteve.reinhardt@amd.com return -local_errno; 6789143Ssteve.reinhardt@amd.com 67911856Sbrandon.potter@amd.com std::shared_ptr<FileFDEntry> ffdp = 68011856Sbrandon.potter@amd.com std::make_shared<FileFDEntry>(fd, hostFlags, path.c_str(), false); 68111856Sbrandon.potter@amd.com return process->fds->allocFD(ffdp); 682360SN/A} 683360SN/A 68410027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 68510027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 68610027SChris.Adeniyi-Jones@arm.comSyscallReturn 68711851Sbrandon.potter@amd.comopenFunc(SyscallDesc *desc, int callnum, Process *process, 68810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 68910027SChris.Adeniyi-Jones@arm.com{ 69010027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 69110027SChris.Adeniyi-Jones@arm.com} 69210027SChris.Adeniyi-Jones@arm.com 69310027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 69410027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 69510027SChris.Adeniyi-Jones@arm.comSyscallReturn 69611851Sbrandon.potter@amd.comopenatFunc(SyscallDesc *desc, int callnum, Process *process, 69711851Sbrandon.potter@amd.com ThreadContext *tc) 69810027SChris.Adeniyi-Jones@arm.com{ 69910027SChris.Adeniyi-Jones@arm.com int index = 0; 70010027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 70110027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 70210027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 70310027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 70410027SChris.Adeniyi-Jones@arm.com} 70510027SChris.Adeniyi-Jones@arm.com 70610633Smichaelupton@gmail.com/// Target unlinkat() handler. 70710633Smichaelupton@gmail.comtemplate <class OS> 70810633Smichaelupton@gmail.comSyscallReturn 70911851Sbrandon.potter@amd.comunlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 71010633Smichaelupton@gmail.com ThreadContext *tc) 71110633Smichaelupton@gmail.com{ 71210633Smichaelupton@gmail.com int index = 0; 71310633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 71410633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 71510633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 71610633Smichaelupton@gmail.com 71710633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 71810633Smichaelupton@gmail.com} 71910633Smichaelupton@gmail.com 72010203SAli.Saidi@ARM.com/// Target facessat() handler 72110203SAli.Saidi@ARM.comtemplate <class OS> 72210203SAli.Saidi@ARM.comSyscallReturn 72311851Sbrandon.potter@amd.comfaccessatFunc(SyscallDesc *desc, int callnum, Process *process, 72411851Sbrandon.potter@amd.com ThreadContext *tc) 72510203SAli.Saidi@ARM.com{ 72610203SAli.Saidi@ARM.com int index = 0; 72710203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 72810203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 72910203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 73010203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 73110203SAli.Saidi@ARM.com} 73210203SAli.Saidi@ARM.com 73310203SAli.Saidi@ARM.com/// Target readlinkat() handler 73410203SAli.Saidi@ARM.comtemplate <class OS> 73510203SAli.Saidi@ARM.comSyscallReturn 73611851Sbrandon.potter@amd.comreadlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 73711851Sbrandon.potter@amd.com ThreadContext *tc) 73810203SAli.Saidi@ARM.com{ 73910203SAli.Saidi@ARM.com int index = 0; 74010203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 74110203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 74210203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 74310203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 74410203SAli.Saidi@ARM.com} 74510203SAli.Saidi@ARM.com 74610850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 74710850SGiacomo.Gabrielli@arm.comtemplate <class OS> 74810850SGiacomo.Gabrielli@arm.comSyscallReturn 74911851Sbrandon.potter@amd.comrenameatFunc(SyscallDesc *desc, int callnum, Process *process, 75010850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 75110850SGiacomo.Gabrielli@arm.com{ 75210850SGiacomo.Gabrielli@arm.com int index = 0; 75310850SGiacomo.Gabrielli@arm.com 75410850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 75510850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 75610850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 75710850SGiacomo.Gabrielli@arm.com 75810850SGiacomo.Gabrielli@arm.com std::string old_name; 75910850SGiacomo.Gabrielli@arm.com 76010850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 76110850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 76210850SGiacomo.Gabrielli@arm.com return -EFAULT; 76310850SGiacomo.Gabrielli@arm.com 76410850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 76510850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 76610850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 76710850SGiacomo.Gabrielli@arm.com 76810850SGiacomo.Gabrielli@arm.com std::string new_name; 76910850SGiacomo.Gabrielli@arm.com 77010850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 77110850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 77210850SGiacomo.Gabrielli@arm.com return -EFAULT; 77310850SGiacomo.Gabrielli@arm.com 77410850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 77510850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 77610850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 77710850SGiacomo.Gabrielli@arm.com 77810850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 77910850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 78010850SGiacomo.Gabrielli@arm.com} 78110850SGiacomo.Gabrielli@arm.com 7826640Svince@csl.cornell.edu/// Target sysinfo() handler. 7836640Svince@csl.cornell.edutemplate <class OS> 7846640Svince@csl.cornell.eduSyscallReturn 78511851Sbrandon.potter@amd.comsysinfoFunc(SyscallDesc *desc, int callnum, Process *process, 78611851Sbrandon.potter@amd.com ThreadContext *tc) 7876640Svince@csl.cornell.edu{ 7886640Svince@csl.cornell.edu 7896701Sgblack@eecs.umich.edu int index = 0; 7906701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 79110793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 7926640Svince@csl.cornell.edu 79311758Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 79411758Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 79511758Sbrandon.potter@amd.com sysinfo->mem_unit = 1; 7966640Svince@csl.cornell.edu 7978706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7986640Svince@csl.cornell.edu 7996701Sgblack@eecs.umich.edu return 0; 8006640Svince@csl.cornell.edu} 801360SN/A 8021999SN/A/// Target chmod() handler. 8031999SN/Atemplate <class OS> 8041999SN/ASyscallReturn 80511851Sbrandon.potter@amd.comchmodFunc(SyscallDesc *desc, int callnum, Process *process, 8062680Sktlim@umich.edu ThreadContext *tc) 8071999SN/A{ 8081999SN/A std::string path; 8091999SN/A 8106701Sgblack@eecs.umich.edu int index = 0; 8118852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8126701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8131999SN/A return -EFAULT; 8146701Sgblack@eecs.umich.edu } 8151999SN/A 8166701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8171999SN/A mode_t hostMode = 0; 8181999SN/A 8191999SN/A // XXX translate mode flags via OS::something??? 8201999SN/A hostMode = mode; 8211999SN/A 8223669Sbinkertn@umich.edu // Adjust path for current working directory 8233669Sbinkertn@umich.edu path = process->fullPath(path); 8243669Sbinkertn@umich.edu 8251999SN/A // do the chmod 8261999SN/A int result = chmod(path.c_str(), hostMode); 8271999SN/A if (result < 0) 8282218SN/A return -errno; 8291999SN/A 8301999SN/A return 0; 8311999SN/A} 8321999SN/A 8331999SN/A 8341999SN/A/// Target fchmod() handler. 8351999SN/Atemplate <class OS> 8361999SN/ASyscallReturn 83711856Sbrandon.potter@amd.comfchmodFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 8381999SN/A{ 8396701Sgblack@eecs.umich.edu int index = 0; 84011856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 84111856Sbrandon.potter@amd.com uint32_t mode = p->getSyscallArg(tc, index); 84210931Sbrandon.potter@amd.com 84311856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 84411856Sbrandon.potter@amd.com if (!ffdp) 8451999SN/A return -EBADF; 84611856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 8471999SN/A 84811856Sbrandon.potter@amd.com mode_t hostMode = mode; 8491999SN/A 85011856Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 8511999SN/A 85211856Sbrandon.potter@amd.com return (result < 0) ? -errno : 0; 8531999SN/A} 8541999SN/A 8555877Shsul@eecs.umich.edu/// Target mremap() handler. 8565877Shsul@eecs.umich.edutemplate <class OS> 8575877Shsul@eecs.umich.eduSyscallReturn 85811851Sbrandon.potter@amd.commremapFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 8595877Shsul@eecs.umich.edu{ 8606701Sgblack@eecs.umich.edu int index = 0; 8616701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8626701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8636701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8646701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 86510027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 86610027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 86710027SChris.Adeniyi-Jones@arm.com 86810027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 86910027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8705877Shsul@eecs.umich.edu 87110318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 87210318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8735877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8745877Shsul@eecs.umich.edu return -EINVAL; 8755877Shsul@eecs.umich.edu } 8765877Shsul@eecs.umich.edu 87710486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 87810486Stjablin@gmail.com 8795877Shsul@eecs.umich.edu if (new_length > old_length) { 88010027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 88110027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8825877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8838601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8845877Shsul@eecs.umich.edu process->mmap_end += diff; 8855877Shsul@eecs.umich.edu return start; 8865877Shsul@eecs.umich.edu } else { 88710027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8885877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8895877Shsul@eecs.umich.edu return -ENOMEM; 8905877Shsul@eecs.umich.edu } else { 89110027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 89210027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 89310027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 89410027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 89510027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 89610027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8975877Shsul@eecs.umich.edu // add on the remaining unallocated pages 89810027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 89910027SChris.Adeniyi-Jones@arm.com new_length - old_length, 90010027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 90110027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 90210027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 90310027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 90410027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 90510027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 90610027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 90710027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 90810027SChris.Adeniyi-Jones@arm.com } 90910027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 91010027SChris.Adeniyi-Jones@arm.com return new_start; 9115877Shsul@eecs.umich.edu } 9125877Shsul@eecs.umich.edu } 9135877Shsul@eecs.umich.edu } else { 91410027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 91510027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 9168601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 91710027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 9185877Shsul@eecs.umich.edu } 9195877Shsul@eecs.umich.edu} 9201999SN/A 921378SN/A/// Target stat() handler. 922360SN/Atemplate <class OS> 9231450SN/ASyscallReturn 92411851Sbrandon.potter@amd.comstatFunc(SyscallDesc *desc, int callnum, Process *process, 9252680Sktlim@umich.edu ThreadContext *tc) 926360SN/A{ 927360SN/A std::string path; 928360SN/A 9296701Sgblack@eecs.umich.edu int index = 0; 9308852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9316701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9326701Sgblack@eecs.umich.edu return -EFAULT; 9336701Sgblack@eecs.umich.edu } 9346701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 935360SN/A 9363669Sbinkertn@umich.edu // Adjust path for current working directory 9373669Sbinkertn@umich.edu path = process->fullPath(path); 9383669Sbinkertn@umich.edu 939360SN/A struct stat hostBuf; 940360SN/A int result = stat(path.c_str(), &hostBuf); 941360SN/A 942360SN/A if (result < 0) 9432218SN/A return -errno; 944360SN/A 9458706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 946360SN/A 9471458SN/A return 0; 948360SN/A} 949360SN/A 950360SN/A 9515074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9525074Ssaidi@eecs.umich.edutemplate <class OS> 9535074Ssaidi@eecs.umich.eduSyscallReturn 95411851Sbrandon.potter@amd.comstat64Func(SyscallDesc *desc, int callnum, Process *process, 9555074Ssaidi@eecs.umich.edu ThreadContext *tc) 9565074Ssaidi@eecs.umich.edu{ 9575074Ssaidi@eecs.umich.edu std::string path; 9585074Ssaidi@eecs.umich.edu 9596701Sgblack@eecs.umich.edu int index = 0; 9608852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9616701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9625074Ssaidi@eecs.umich.edu return -EFAULT; 9636701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9645074Ssaidi@eecs.umich.edu 9655074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9665074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9675074Ssaidi@eecs.umich.edu 9685208Ssaidi@eecs.umich.edu#if NO_STAT64 9695208Ssaidi@eecs.umich.edu struct stat hostBuf; 9705208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9715208Ssaidi@eecs.umich.edu#else 9725074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9735074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9745208Ssaidi@eecs.umich.edu#endif 9755074Ssaidi@eecs.umich.edu 9765074Ssaidi@eecs.umich.edu if (result < 0) 9775074Ssaidi@eecs.umich.edu return -errno; 9785074Ssaidi@eecs.umich.edu 9798706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9805074Ssaidi@eecs.umich.edu 9815074Ssaidi@eecs.umich.edu return 0; 9825074Ssaidi@eecs.umich.edu} 9835074Ssaidi@eecs.umich.edu 9845074Ssaidi@eecs.umich.edu 98510027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 98610027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 98710027SChris.Adeniyi-Jones@arm.comSyscallReturn 98811851Sbrandon.potter@amd.comfstatat64Func(SyscallDesc *desc, int callnum, Process *process, 98910027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 99010027SChris.Adeniyi-Jones@arm.com{ 99110027SChris.Adeniyi-Jones@arm.com int index = 0; 99210027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 99310027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 99410793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 99510027SChris.Adeniyi-Jones@arm.com 99610027SChris.Adeniyi-Jones@arm.com std::string path; 99710027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 99810027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 99910027SChris.Adeniyi-Jones@arm.com return -EFAULT; 100010027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 100110027SChris.Adeniyi-Jones@arm.com 100210027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 100310027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 100410027SChris.Adeniyi-Jones@arm.com 100510027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 100610027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 100710027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 100810027SChris.Adeniyi-Jones@arm.com#else 100910027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 101010027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 101110027SChris.Adeniyi-Jones@arm.com#endif 101210027SChris.Adeniyi-Jones@arm.com 101310027SChris.Adeniyi-Jones@arm.com if (result < 0) 101410027SChris.Adeniyi-Jones@arm.com return -errno; 101510027SChris.Adeniyi-Jones@arm.com 101610027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 101710027SChris.Adeniyi-Jones@arm.com 101810027SChris.Adeniyi-Jones@arm.com return 0; 101910027SChris.Adeniyi-Jones@arm.com} 102010027SChris.Adeniyi-Jones@arm.com 102110027SChris.Adeniyi-Jones@arm.com 10221999SN/A/// Target fstat64() handler. 10231999SN/Atemplate <class OS> 10241999SN/ASyscallReturn 102511856Sbrandon.potter@amd.comfstat64Func(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 10261999SN/A{ 10276701Sgblack@eecs.umich.edu int index = 0; 102811856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 102911856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 103010931Sbrandon.potter@amd.com 103111856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 103211856Sbrandon.potter@amd.com if (!ffdp) 10331999SN/A return -EBADF; 103411856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 10351999SN/A 10362764Sstever@eecs.umich.edu#if NO_STAT64 10372064SN/A struct stat hostBuf; 103810931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 10392064SN/A#else 10402064SN/A struct stat64 hostBuf; 104110931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 10422064SN/A#endif 10431999SN/A 10441999SN/A if (result < 0) 10452218SN/A return -errno; 10461999SN/A 104710931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10481999SN/A 10491999SN/A return 0; 10501999SN/A} 10511999SN/A 10521999SN/A 1053378SN/A/// Target lstat() handler. 1054360SN/Atemplate <class OS> 10551450SN/ASyscallReturn 105611851Sbrandon.potter@amd.comlstatFunc(SyscallDesc *desc, int callnum, Process *process, 10572680Sktlim@umich.edu ThreadContext *tc) 1058360SN/A{ 1059360SN/A std::string path; 1060360SN/A 10616701Sgblack@eecs.umich.edu int index = 0; 10628852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10636701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10646701Sgblack@eecs.umich.edu return -EFAULT; 10656701Sgblack@eecs.umich.edu } 10666701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1067360SN/A 10683669Sbinkertn@umich.edu // Adjust path for current working directory 10693669Sbinkertn@umich.edu path = process->fullPath(path); 10703669Sbinkertn@umich.edu 1071360SN/A struct stat hostBuf; 1072360SN/A int result = lstat(path.c_str(), &hostBuf); 1073360SN/A 1074360SN/A if (result < 0) 10751458SN/A return -errno; 1076360SN/A 10778706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1078360SN/A 10791458SN/A return 0; 1080360SN/A} 1081360SN/A 10821999SN/A/// Target lstat64() handler. 10831999SN/Atemplate <class OS> 10841999SN/ASyscallReturn 108511851Sbrandon.potter@amd.comlstat64Func(SyscallDesc *desc, int callnum, Process *process, 10862680Sktlim@umich.edu ThreadContext *tc) 10871999SN/A{ 10881999SN/A std::string path; 10891999SN/A 10906701Sgblack@eecs.umich.edu int index = 0; 10918852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10926701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10936701Sgblack@eecs.umich.edu return -EFAULT; 10946701Sgblack@eecs.umich.edu } 10956701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10961999SN/A 10973669Sbinkertn@umich.edu // Adjust path for current working directory 10983669Sbinkertn@umich.edu path = process->fullPath(path); 10993669Sbinkertn@umich.edu 11002764Sstever@eecs.umich.edu#if NO_STAT64 11012064SN/A struct stat hostBuf; 11022064SN/A int result = lstat(path.c_str(), &hostBuf); 11032064SN/A#else 11041999SN/A struct stat64 hostBuf; 11051999SN/A int result = lstat64(path.c_str(), &hostBuf); 11062064SN/A#endif 11071999SN/A 11081999SN/A if (result < 0) 11091999SN/A return -errno; 11101999SN/A 11118706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11121999SN/A 11131999SN/A return 0; 11141999SN/A} 11151999SN/A 1116378SN/A/// Target fstat() handler. 1117360SN/Atemplate <class OS> 11181450SN/ASyscallReturn 111911856Sbrandon.potter@amd.comfstatFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 1120360SN/A{ 11216701Sgblack@eecs.umich.edu int index = 0; 112211856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 112311856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 1124360SN/A 112511380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1126360SN/A 112711856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 112811856Sbrandon.potter@amd.com if (!ffdp) 11291458SN/A return -EBADF; 113011856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 1131360SN/A 1132360SN/A struct stat hostBuf; 113310931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1134360SN/A 1135360SN/A if (result < 0) 11361458SN/A return -errno; 1137360SN/A 113810931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11392021SN/A 11401458SN/A return 0; 1141360SN/A} 1142360SN/A 1143360SN/A 11441706SN/A/// Target statfs() handler. 11451706SN/Atemplate <class OS> 11461706SN/ASyscallReturn 114711851Sbrandon.potter@amd.comstatfsFunc(SyscallDesc *desc, int callnum, Process *process, 11482680Sktlim@umich.edu ThreadContext *tc) 11491706SN/A{ 115011799Sbrandon.potter@amd.com#if NO_STATFS 115111799Sbrandon.potter@amd.com warn("Host OS cannot support calls to statfs. Ignoring syscall"); 115211799Sbrandon.potter@amd.com#else 11531706SN/A std::string path; 11541706SN/A 11556701Sgblack@eecs.umich.edu int index = 0; 11568852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11576701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11586701Sgblack@eecs.umich.edu return -EFAULT; 11596701Sgblack@eecs.umich.edu } 11606701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11611706SN/A 11623669Sbinkertn@umich.edu // Adjust path for current working directory 11633669Sbinkertn@umich.edu path = process->fullPath(path); 11643669Sbinkertn@umich.edu 11651706SN/A struct statfs hostBuf; 11661706SN/A int result = statfs(path.c_str(), &hostBuf); 11671706SN/A 11681706SN/A if (result < 0) 11692218SN/A return -errno; 11701706SN/A 117111759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 117211799Sbrandon.potter@amd.com#endif 11731706SN/A return 0; 11741706SN/A} 11751706SN/A 11761706SN/A 11771706SN/A/// Target fstatfs() handler. 11781706SN/Atemplate <class OS> 11791706SN/ASyscallReturn 118011856Sbrandon.potter@amd.comfstatfsFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 11811706SN/A{ 11826701Sgblack@eecs.umich.edu int index = 0; 118311856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 118411856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 11851706SN/A 118611856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 118711856Sbrandon.potter@amd.com if (!ffdp) 11881706SN/A return -EBADF; 118911856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 11901706SN/A 11911706SN/A struct statfs hostBuf; 119210931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 11931706SN/A 11941706SN/A if (result < 0) 11952218SN/A return -errno; 11961706SN/A 119711759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11981706SN/A 11991706SN/A return 0; 12001706SN/A} 12011706SN/A 12021706SN/A 12031999SN/A/// Target writev() handler. 12041999SN/Atemplate <class OS> 12051999SN/ASyscallReturn 120611856Sbrandon.potter@amd.comwritevFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 12071999SN/A{ 12086701Sgblack@eecs.umich.edu int index = 0; 120911856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 121010931Sbrandon.potter@amd.com 121111856Sbrandon.potter@amd.com auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 121211856Sbrandon.potter@amd.com if (!hbfdp) 12131999SN/A return -EBADF; 121411856Sbrandon.potter@amd.com int sim_fd = hbfdp->getSimFD(); 12151999SN/A 121611856Sbrandon.potter@amd.com SETranslatingPortProxy &prox = tc->getMemProxy(); 121711856Sbrandon.potter@amd.com uint64_t tiov_base = p->getSyscallArg(tc, index); 121811856Sbrandon.potter@amd.com size_t count = p->getSyscallArg(tc, index); 12191999SN/A struct iovec hiov[count]; 12206227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 12211999SN/A typename OS::tgt_iovec tiov; 12222461SN/A 122311856Sbrandon.potter@amd.com prox.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 122411856Sbrandon.potter@amd.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12258737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12261999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 122711856Sbrandon.potter@amd.com prox.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 122811856Sbrandon.potter@amd.com hiov[i].iov_len); 12291999SN/A } 12301999SN/A 123110931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 12321999SN/A 12336227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12341999SN/A delete [] (char *)hiov[i].iov_base; 12351999SN/A 12361999SN/A if (result < 0) 12372218SN/A return -errno; 12381999SN/A 123910629Sjthestness@gmail.com return result; 12401999SN/A} 12411999SN/A 124211385Sbrandon.potter@amd.com/// Real mmap handler. 1243360SN/Atemplate <class OS> 12441450SN/ASyscallReturn 124511851Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 124611385Sbrandon.potter@amd.com bool is_mmap2) 1247360SN/A{ 12486701Sgblack@eecs.umich.edu int index = 0; 12496701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12506701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 125111383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 125211383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12538324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 125410486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1255360SN/A 125611385Sbrandon.potter@amd.com if (is_mmap2) 125711385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12589008Sgblack@eecs.umich.edu 125911383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 126011383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 126111383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 126211383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 126311383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 126411383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 126511383Sbrandon.potter@amd.com !length) { 126611383Sbrandon.potter@amd.com return -EINVAL; 126711383Sbrandon.potter@amd.com } 12688324Ssteve.reinhardt@amd.com 126911383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 127011383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 127111383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 127211383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 127311383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 127411383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 127511383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 127611383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 127711383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 127811383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 127911383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 128011383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 128111383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 128211383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 128311383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 128411383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 128511383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 128611383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 128711383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 128811383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 128911383Sbrandon.potter@amd.com // than we currently maintain. 129011383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 129111383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 129211383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 12938324Ssteve.reinhardt@amd.com } 12945877Shsul@eecs.umich.edu 129510486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 129610486Stjablin@gmail.com 129711383Sbrandon.potter@amd.com int sim_fd = -1; 129811383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 129911383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 130011856Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 130111624Smichael.lebeane@amd.com 130211856Sbrandon.potter@amd.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>(fdep); 130311856Sbrandon.potter@amd.com if (dfdp) { 130411856Sbrandon.potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 130511856Sbrandon.potter@amd.com return emul_driver->mmap(p, tc, start, length, prot, 130611624Smichael.lebeane@amd.com tgt_flags, tgt_fd, offset); 130711624Smichael.lebeane@amd.com } 130811624Smichael.lebeane@amd.com 130911856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 131011856Sbrandon.potter@amd.com if (!ffdp) 131111383Sbrandon.potter@amd.com return -EBADF; 131211856Sbrandon.potter@amd.com sim_fd = ffdp->getSimFD(); 1313360SN/A 131411383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 131511383Sbrandon.potter@amd.com sim_fd, offset); 13168600Ssteve.reinhardt@amd.com 131711383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 131811383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 131911383Sbrandon.potter@amd.com return -errno; 13208600Ssteve.reinhardt@amd.com } 13212544SN/A } 13222544SN/A 132311383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 132411383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 132511383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 132611386Ssteve.reinhardt@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 132711386Ssteve.reinhardt@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 132811383Sbrandon.potter@amd.com } 132911383Sbrandon.potter@amd.com 133011383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 133111383Sbrandon.potter@amd.com start, start + length - 1); 133211383Sbrandon.potter@amd.com 133311383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 133411383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 133511383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 133611383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 133711383Sbrandon.potter@amd.com if (clobber) { 133811383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 133911383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 134011383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 134111383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 134211383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13438600Ssteve.reinhardt@amd.com } 13446672Sgblack@eecs.umich.edu } 13458600Ssteve.reinhardt@amd.com 134611383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 134711383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 134811383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 13498601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 13502544SN/A 135111383Sbrandon.potter@amd.com // Transfer content into target address space. 135211383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 135311383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 135411383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 135511383Sbrandon.potter@amd.com // with something like: 135611383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 135711383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 135811383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 135911383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 136011383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 136111383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 136211383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 136311383Sbrandon.potter@amd.com } else { 136411383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 136511383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 136611383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 136711383Sbrandon.potter@amd.com // the host into the target address space. 136811383Sbrandon.potter@amd.com struct stat file_stat; 136911383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 137011383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 137111383Sbrandon.potter@amd.com 137211383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 137311383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 137411383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 137511383Sbrandon.potter@amd.com // on the specified offset into the file. 137611383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 137711383Sbrandon.potter@amd.com length); 137811383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 137911383Sbrandon.potter@amd.com 138011383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 138111383Sbrandon.potter@amd.com munmap(pmap, length); 138211383Sbrandon.potter@amd.com 138311392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 138411392Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 138511392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 138611392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 138711392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 138811392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 138911392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 139011392Sbrandon.potter@amd.com if (interpreter) { 139111392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 139211392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 139311392Sbrandon.potter@amd.com 139411392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 139511392Sbrandon.potter@amd.com 139611392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 139711856Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 139811856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 139911856Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(ffdp->getFileName()); 140011392Sbrandon.potter@amd.com 140111392Sbrandon.potter@amd.com if (lib) { 140211392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 140311392Sbrandon.potter@amd.com lib->textBase(), start); 140411392Sbrandon.potter@amd.com } 140511392Sbrandon.potter@amd.com } 140611392Sbrandon.potter@amd.com } 140711392Sbrandon.potter@amd.com 140811383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 140911383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 141011383Sbrandon.potter@amd.com // execution (hopefully). 141111383Sbrandon.potter@amd.com } 141211383Sbrandon.potter@amd.com 14131458SN/A return start; 1414360SN/A} 1415360SN/A 141611593Santhony.gutierrez@amd.comtemplate <class OS> 141711593Santhony.gutierrez@amd.comSyscallReturn 141811851Sbrandon.potter@amd.compwrite64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 141911593Santhony.gutierrez@amd.com{ 142011593Santhony.gutierrez@amd.com int index = 0; 142111593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 142211593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 142311593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 142411593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 142511593Santhony.gutierrez@amd.com 142611856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 142711856Sbrandon.potter@amd.com if (!ffdp) 142811593Santhony.gutierrez@amd.com return -EBADF; 142911856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 143011593Santhony.gutierrez@amd.com 143111593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 143211593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 143311593Santhony.gutierrez@amd.com 143411594Santhony.gutierrez@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 143511593Santhony.gutierrez@amd.com 143611593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 143711593Santhony.gutierrez@amd.com} 143811593Santhony.gutierrez@amd.com 143911385Sbrandon.potter@amd.com/// Target mmap() handler. 144011385Sbrandon.potter@amd.comtemplate <class OS> 144111385Sbrandon.potter@amd.comSyscallReturn 144211851Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 144311385Sbrandon.potter@amd.com{ 144411385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 144511385Sbrandon.potter@amd.com} 144611385Sbrandon.potter@amd.com 144711385Sbrandon.potter@amd.com/// Target mmap2() handler. 144811385Sbrandon.potter@amd.comtemplate <class OS> 144911385Sbrandon.potter@amd.comSyscallReturn 145011851Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 145111385Sbrandon.potter@amd.com{ 145211385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 145311385Sbrandon.potter@amd.com} 145411385Sbrandon.potter@amd.com 1455378SN/A/// Target getrlimit() handler. 1456360SN/Atemplate <class OS> 14571450SN/ASyscallReturn 145811851Sbrandon.potter@amd.comgetrlimitFunc(SyscallDesc *desc, int callnum, Process *process, 145911851Sbrandon.potter@amd.com ThreadContext *tc) 1460360SN/A{ 14616701Sgblack@eecs.umich.edu int index = 0; 14626701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 14636701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1464360SN/A 1465360SN/A switch (resource) { 14662064SN/A case OS::TGT_RLIMIT_STACK: 14675877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14682064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14698737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14708737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14712064SN/A break; 1472360SN/A 14735877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 14745877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 14755877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14768737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14778737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14785877Shsul@eecs.umich.edu break; 14795877Shsul@eecs.umich.edu 14802064SN/A default: 148110794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 148210794Sbrandon.potter@amd.com return -EINVAL; 14832064SN/A break; 1484360SN/A } 1485360SN/A 14868706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 14871458SN/A return 0; 1488360SN/A} 1489360SN/A 149010796Sbrandon.potter@amd.com/// Target clock_gettime() function. 149110796Sbrandon.potter@amd.comtemplate <class OS> 149210796Sbrandon.potter@amd.comSyscallReturn 149311851Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 149410796Sbrandon.potter@amd.com{ 149510796Sbrandon.potter@amd.com int index = 1; 149610796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 149710796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 149810796Sbrandon.potter@amd.com 149910796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 150010796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 150110796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 150210796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 150310796Sbrandon.potter@amd.com 150410796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 150510796Sbrandon.potter@amd.com 150610796Sbrandon.potter@amd.com return 0; 150710796Sbrandon.potter@amd.com} 150810796Sbrandon.potter@amd.com 150911337SMichael.Lebeane@amd.com/// Target clock_getres() function. 151011337SMichael.Lebeane@amd.comtemplate <class OS> 151111337SMichael.Lebeane@amd.comSyscallReturn 151211851Sbrandon.potter@amd.comclock_getresFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 151311337SMichael.Lebeane@amd.com{ 151411337SMichael.Lebeane@amd.com int index = 1; 151511337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 151611337SMichael.Lebeane@amd.com 151711337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 151811337SMichael.Lebeane@amd.com tp->tv_sec = 0; 151911337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 152011337SMichael.Lebeane@amd.com 152111337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 152211337SMichael.Lebeane@amd.com 152311337SMichael.Lebeane@amd.com return 0; 152411337SMichael.Lebeane@amd.com} 152511337SMichael.Lebeane@amd.com 1526378SN/A/// Target gettimeofday() handler. 1527360SN/Atemplate <class OS> 15281450SN/ASyscallReturn 152911851Sbrandon.potter@amd.comgettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process, 153011851Sbrandon.potter@amd.com ThreadContext *tc) 1531360SN/A{ 15326701Sgblack@eecs.umich.edu int index = 0; 15336701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1534360SN/A 153510796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1536360SN/A tp->tv_sec += seconds_since_epoch; 15376109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 15386109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1539360SN/A 15408706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1541360SN/A 15421458SN/A return 0; 1543360SN/A} 1544360SN/A 1545360SN/A 15461999SN/A/// Target utimes() handler. 15471999SN/Atemplate <class OS> 15481999SN/ASyscallReturn 154911851Sbrandon.potter@amd.comutimesFunc(SyscallDesc *desc, int callnum, Process *process, 15502680Sktlim@umich.edu ThreadContext *tc) 15511999SN/A{ 15521999SN/A std::string path; 15531999SN/A 15546701Sgblack@eecs.umich.edu int index = 0; 15558852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 15566701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 15576701Sgblack@eecs.umich.edu return -EFAULT; 15586701Sgblack@eecs.umich.edu } 15591999SN/A 15606701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 15616701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 15628706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 15631999SN/A 15641999SN/A struct timeval hostTimeval[2]; 15651999SN/A for (int i = 0; i < 2; ++i) 15661999SN/A { 15678737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15688737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15691999SN/A } 15703669Sbinkertn@umich.edu 15713669Sbinkertn@umich.edu // Adjust path for current working directory 15723669Sbinkertn@umich.edu path = process->fullPath(path); 15733669Sbinkertn@umich.edu 15741999SN/A int result = utimes(path.c_str(), hostTimeval); 15751999SN/A 15761999SN/A if (result < 0) 15771999SN/A return -errno; 15781999SN/A 15791999SN/A return 0; 15801999SN/A} 1581378SN/A/// Target getrusage() function. 1582360SN/Atemplate <class OS> 15831450SN/ASyscallReturn 158411851Sbrandon.potter@amd.comgetrusageFunc(SyscallDesc *desc, int callnum, Process *process, 15852680Sktlim@umich.edu ThreadContext *tc) 1586360SN/A{ 15876701Sgblack@eecs.umich.edu int index = 0; 15886701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 15896701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1590360SN/A 15913670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 15923670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1593360SN/A rup->ru_stime.tv_sec = 0; 1594360SN/A rup->ru_stime.tv_usec = 0; 1595360SN/A rup->ru_maxrss = 0; 1596360SN/A rup->ru_ixrss = 0; 1597360SN/A rup->ru_idrss = 0; 1598360SN/A rup->ru_isrss = 0; 1599360SN/A rup->ru_minflt = 0; 1600360SN/A rup->ru_majflt = 0; 1601360SN/A rup->ru_nswap = 0; 1602360SN/A rup->ru_inblock = 0; 1603360SN/A rup->ru_oublock = 0; 1604360SN/A rup->ru_msgsnd = 0; 1605360SN/A rup->ru_msgrcv = 0; 1606360SN/A rup->ru_nsignals = 0; 1607360SN/A rup->ru_nvcsw = 0; 1608360SN/A rup->ru_nivcsw = 0; 1609360SN/A 16103670Sbinkertn@umich.edu switch (who) { 16113670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 161210796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 16138737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 16148737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 16153670Sbinkertn@umich.edu break; 16163670Sbinkertn@umich.edu 16173670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 16183670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 16193670Sbinkertn@umich.edu break; 16203670Sbinkertn@umich.edu 16213670Sbinkertn@umich.edu default: 16223670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 16233670Sbinkertn@umich.edu // plow ahead 16243670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 16253670Sbinkertn@umich.edu who); 16263670Sbinkertn@umich.edu } 16273670Sbinkertn@umich.edu 16288706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1629360SN/A 16301458SN/A return 0; 1631360SN/A} 1632360SN/A 16336683Stjones1@inf.ed.ac.uk/// Target times() function. 16346683Stjones1@inf.ed.ac.uktemplate <class OS> 16356683Stjones1@inf.ed.ac.ukSyscallReturn 163611851Sbrandon.potter@amd.comtimesFunc(SyscallDesc *desc, int callnum, Process *process, 163711851Sbrandon.potter@amd.com ThreadContext *tc) 16386683Stjones1@inf.ed.ac.uk{ 16396701Sgblack@eecs.umich.edu int index = 0; 16406701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 16416683Stjones1@inf.ed.ac.uk 16426683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 16437823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16446683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 16456683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 16466683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 16476683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 16486683Stjones1@inf.ed.ac.uk 16496683Stjones1@inf.ed.ac.uk // Convert to host endianness 16508737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 16516683Stjones1@inf.ed.ac.uk 16526683Stjones1@inf.ed.ac.uk // Write back 16538706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 16546683Stjones1@inf.ed.ac.uk 16556683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 16566683Stjones1@inf.ed.ac.uk return clocks; 16576683Stjones1@inf.ed.ac.uk} 16582553SN/A 16596684Stjones1@inf.ed.ac.uk/// Target time() function. 16606684Stjones1@inf.ed.ac.uktemplate <class OS> 16616684Stjones1@inf.ed.ac.ukSyscallReturn 166211851Sbrandon.potter@amd.comtimeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 16636684Stjones1@inf.ed.ac.uk{ 16646684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 166510796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 16666684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 16676684Stjones1@inf.ed.ac.uk 16686701Sgblack@eecs.umich.edu int index = 0; 16696701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 167011321Ssteve.reinhardt@amd.com if (taddr != 0) { 16716684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 16728737Skoansin.tan@gmail.com t = TheISA::htog(t); 16738852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 16748852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16756684Stjones1@inf.ed.ac.uk } 16766684Stjones1@inf.ed.ac.uk return sec; 16776684Stjones1@inf.ed.ac.uk} 16782553SN/A 16792553SN/A 16801354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1681