syscall_emul.hh revision 13569
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 4812018Sandreas.sandberg@arm.com#if (defined(__APPLE__) || defined(__OpenBSD__) || \ 4912018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__CYGWIN__) || \ 5012018Sandreas.sandberg@arm.com defined(__NetBSD__)) 5112018Sandreas.sandberg@arm.com#define NO_STAT64 1 5212018Sandreas.sandberg@arm.com#else 5312018Sandreas.sandberg@arm.com#define NO_STAT64 0 5412018Sandreas.sandberg@arm.com#endif 552064SN/A 5612018Sandreas.sandberg@arm.com#if (defined(__APPLE__) || defined(__OpenBSD__) || \ 5712018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__NetBSD__)) 5812018Sandreas.sandberg@arm.com#define NO_STATFS 1 5912018Sandreas.sandberg@arm.com#else 6012018Sandreas.sandberg@arm.com#define NO_STATFS 0 6112018Sandreas.sandberg@arm.com#endif 6211799Sbrandon.potter@amd.com 6312018Sandreas.sandberg@arm.com#if (defined(__APPLE__) || defined(__OpenBSD__) || \ 6412018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__NetBSD__)) 6512018Sandreas.sandberg@arm.com#define NO_FALLOCATE 1 6612018Sandreas.sandberg@arm.com#else 6712018Sandreas.sandberg@arm.com#define NO_FALLOCATE 0 6812018Sandreas.sandberg@arm.com#endif 6911799Sbrandon.potter@amd.com 70360SN/A/// 71360SN/A/// @file syscall_emul.hh 72360SN/A/// 73360SN/A/// This file defines objects used to emulate syscalls from the target 74360SN/A/// application on the host machine. 75360SN/A 761809SN/A#ifdef __CYGWIN32__ 7711800Sbrandon.potter@amd.com#include <sys/fcntl.h> 7811392Sbrandon.potter@amd.com 791809SN/A#endif 8011392Sbrandon.potter@amd.com#include <fcntl.h> 8111383Sbrandon.potter@amd.com#include <sys/mman.h> 8213568Sbrandon.potter@amd.com#include <sys/socket.h> 833113Sgblack@eecs.umich.edu#include <sys/stat.h> 8411799Sbrandon.potter@amd.com#if (NO_STATFS == 0) 8511759Sbrandon.potter@amd.com#include <sys/statfs.h> 8611812Sbaz21@cam.ac.uk#else 8711812Sbaz21@cam.ac.uk#include <sys/mount.h> 8811799Sbrandon.potter@amd.com#endif 898229Snate@binkert.org#include <sys/time.h> 908229Snate@binkert.org#include <sys/uio.h> 9111594Santhony.gutierrez@amd.com#include <unistd.h> 927075Snate@binkert.org 938229Snate@binkert.org#include <cerrno> 9411856Sbrandon.potter@amd.com#include <memory> 957075Snate@binkert.org#include <string> 96360SN/A 9712461Sgabeblack@google.com#include "arch/generic/tlb.hh" 9811886Sbrandon.potter@amd.com#include "arch/utility.hh" 9911800Sbrandon.potter@amd.com#include "base/intmath.hh" 10011392Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 10112334Sgabeblack@google.com#include "base/logging.hh" 1021354SN/A#include "base/trace.hh" 1036216Snate@binkert.org#include "base/types.hh" 1046658Snate@binkert.org#include "config/the_isa.hh" 1052474SN/A#include "cpu/base.hh" 1062680Sktlim@umich.edu#include "cpu/thread_context.hh" 1078229Snate@binkert.org#include "mem/page_table.hh" 10811886Sbrandon.potter@amd.com#include "params/Process.hh" 10910496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 11011911SBrandon.Potter@amd.com#include "sim/futex_map.hh" 1118229Snate@binkert.org#include "sim/process.hh" 11211794Sbrandon.potter@amd.com#include "sim/syscall_debug_macros.hh" 11311886Sbrandon.potter@amd.com#include "sim/syscall_desc.hh" 11410497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 11511794Sbrandon.potter@amd.com#include "sim/syscall_return.hh" 116360SN/A 117360SN/A////////////////////////////////////////////////////////////////////// 118360SN/A// 119360SN/A// The following emulation functions are generic enough that they 120360SN/A// don't need to be recompiled for different emulated OS's. They are 121360SN/A// defined in sim/syscall_emul.cc. 122360SN/A// 123360SN/A////////////////////////////////////////////////////////////////////// 124360SN/A 125360SN/A 126378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1271706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 12811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 129378SN/A 130378SN/A/// Handler for unimplemented syscalls that we never intend to 131378SN/A/// implement (signal handling, etc.) and should not affect the correct 132378SN/A/// behavior of the program. Print a warning only if the appropriate 133378SN/A/// trace flag is enabled. Return success to the target program. 1341706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 13511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 136360SN/A 13711760Sbrandon.potter@amd.com// Target fallocateFunc() handler. 13811760Sbrandon.potter@amd.comSyscallReturn fallocateFunc(SyscallDesc *desc, int num, 13911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 14011760Sbrandon.potter@amd.com 1416109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1421706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 14311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 144378SN/A 1456109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1466109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 14711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1486109Ssanchezd@stanford.edu 14911886Sbrandon.potter@amd.com/// Target set_tid_address() handler. 15011886Sbrandon.potter@amd.comSyscallReturn setTidAddressFunc(SyscallDesc *desc, int num, 15111886Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 15211886Sbrandon.potter@amd.com 153378SN/A/// Target getpagesize() handler. 1541706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 15511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 156378SN/A 1575748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1585748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 15911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 160378SN/A 161378SN/A/// Target close() handler. 1621706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 16311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 164378SN/A 16511886Sbrandon.potter@amd.com// Target read() handler. 1661706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 16711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 168378SN/A 169378SN/A/// Target write() handler. 1701706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 17111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 172378SN/A 173378SN/A/// Target lseek() handler. 1741706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 17511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 176378SN/A 1774118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1784118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 17911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1804118Sgblack@eecs.umich.edu 181378SN/A/// Target munmap() handler. 1821706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 18311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 184378SN/A 18513568Sbrandon.potter@amd.com/// Target shutdown() handler. 18613568Sbrandon.potter@amd.comSyscallReturn shutdownFunc(SyscallDesc *desc, int num, 18713568Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 18813568Sbrandon.potter@amd.com 189378SN/A/// Target gethostname() handler. 1901706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 19111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 192360SN/A 1935513SMichael.Adler@intel.com/// Target getcwd() handler. 1945513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 19511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 1965513SMichael.Adler@intel.com 19710203SAli.Saidi@ARM.com/// Target readlink() handler. 19810203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 19911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 20010203SAli.Saidi@ARM.com int index = 0); 2015513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 20211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2035513SMichael.Adler@intel.com 204511SN/A/// Target unlink() handler. 20510633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 20611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 20710633Smichaelupton@gmail.com int index); 2081706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 20911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 210511SN/A 21112795Smattdsinclair@gmail.com/// Target link() handler 21212795Smattdsinclair@gmail.comSyscallReturn linkFunc(SyscallDesc *desc, int num, Process *p, 21312795Smattdsinclair@gmail.com ThreadContext *tc); 21412795Smattdsinclair@gmail.com 21512796Smattdsinclair@gmail.com/// Target symlink() handler. 21612796Smattdsinclair@gmail.comSyscallReturn symlinkFunc(SyscallDesc *desc, int num, Process *p, 21712796Smattdsinclair@gmail.com ThreadContext *tc); 21812796Smattdsinclair@gmail.com 2195513SMichael.Adler@intel.com/// Target mkdir() handler. 2205513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 22111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2225513SMichael.Adler@intel.com 22313031Sbrandon.potter@amd.com/// Target mknod() handler. 22413031Sbrandon.potter@amd.comSyscallReturn mknodFunc(SyscallDesc *desc, int num, 22513031Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 22613031Sbrandon.potter@amd.com 22713031Sbrandon.potter@amd.com/// Target chdir() handler. 22813031Sbrandon.potter@amd.comSyscallReturn chdirFunc(SyscallDesc *desc, int num, 22913031Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 23013031Sbrandon.potter@amd.com 23113031Sbrandon.potter@amd.com// Target rmdir() handler. 23213031Sbrandon.potter@amd.comSyscallReturn rmdirFunc(SyscallDesc *desc, int num, 23313031Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 23413031Sbrandon.potter@amd.com 235511SN/A/// Target rename() handler. 2361706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 23711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2381706SN/A 2391706SN/A 2401706SN/A/// Target truncate() handler. 2411706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 24211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2431706SN/A 2441706SN/A 2451706SN/A/// Target ftruncate() handler. 2461706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 24711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2481706SN/A 249511SN/A 2506703Svince@csl.cornell.edu/// Target truncate64() handler. 2516703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 25211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2536703Svince@csl.cornell.edu 2546685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2556685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 25611851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2576685Stjones1@inf.ed.ac.uk 2586685Stjones1@inf.ed.ac.uk 2595513SMichael.Adler@intel.com/// Target umask() handler. 2605513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 26111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2625513SMichael.Adler@intel.com 26311885Sbrandon.potter@amd.com/// Target gettid() handler. 26411885Sbrandon.potter@amd.comSyscallReturn gettidFunc(SyscallDesc *desc, int num, 26511885Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2665513SMichael.Adler@intel.com 2671999SN/A/// Target chown() handler. 2681999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 26911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2701999SN/A 27111885Sbrandon.potter@amd.com/// Target setpgid() handler. 27211885Sbrandon.potter@amd.comSyscallReturn setpgidFunc(SyscallDesc *desc, int num, 27311885Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2741999SN/A 2751999SN/A/// Target fchown() handler. 2761999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 27711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2781999SN/A 2793079Sstever@eecs.umich.edu/// Target dup() handler. 2803079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 28111851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2823079Sstever@eecs.umich.edu 28311908SBrandon.Potter@amd.com/// Target dup2() handler. 28411908SBrandon.Potter@amd.comSyscallReturn dup2Func(SyscallDesc *desc, int num, 28511908SBrandon.Potter@amd.com Process *process, ThreadContext *tc); 28611908SBrandon.Potter@amd.com 28711875Sbrandon.potter@amd.com/// Target fcntl() handler. 2882093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 28911851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2902093SN/A 2912687Sksewell@umich.edu/// Target fcntl64() handler. 2922687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 29311851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 2942687Sksewell@umich.edu 2952238SN/A/// Target setuid() handler. 2962238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 29711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 2982238SN/A 29911908SBrandon.Potter@amd.com/// Target pipe() handler. 30011908SBrandon.Potter@amd.comSyscallReturn pipeFunc(SyscallDesc *desc, int num, 30111908SBrandon.Potter@amd.com Process *p, ThreadContext *tc); 30211908SBrandon.Potter@amd.com 30311908SBrandon.Potter@amd.com/// Internal pipe() handler. 30411908SBrandon.Potter@amd.comSyscallReturn pipeImpl(SyscallDesc *desc, int num, Process *p, 30511908SBrandon.Potter@amd.com ThreadContext *tc, bool pseudoPipe); 30611908SBrandon.Potter@amd.com 3072238SN/A/// Target getpid() handler. 3082238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 30911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3102238SN/A 31113568Sbrandon.potter@amd.com// Target bind() handler. 31213568Sbrandon.potter@amd.comSyscallReturn bindFunc(SyscallDesc *desc, int num, 31313568Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 31413568Sbrandon.potter@amd.com 31513568Sbrandon.potter@amd.com// Target listen() handler. 31613568Sbrandon.potter@amd.comSyscallReturn listenFunc(SyscallDesc *desc, int num, 31713568Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 31813568Sbrandon.potter@amd.com 31913568Sbrandon.potter@amd.com// Target connect() handler. 32013568Sbrandon.potter@amd.comSyscallReturn connectFunc(SyscallDesc *desc, int num, 32113568Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 32213568Sbrandon.potter@amd.com 32313448Sciro.santilli@arm.com#if defined(SYS_getdents) 32413031Sbrandon.potter@amd.com// Target getdents() handler. 32513031Sbrandon.potter@amd.comSyscallReturn getdentsFunc(SyscallDesc *desc, int num, 32613031Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 32713448Sciro.santilli@arm.com#endif 32813031Sbrandon.potter@amd.com 32913539Sjavier.setoain@arm.com#if defined(SYS_getdents64) 33013539Sjavier.setoain@arm.com// Target getdents() handler. 33113539Sjavier.setoain@arm.comSyscallReturn getdents64Func(SyscallDesc *desc, int num, 33213539Sjavier.setoain@arm.com Process *p, ThreadContext *tc); 33313539Sjavier.setoain@arm.com#endif 33413539Sjavier.setoain@arm.com 33513569Sbrandon.potter@amd.com// Target sendto() handler. 33613569Sbrandon.potter@amd.comSyscallReturn sendtoFunc(SyscallDesc *desc, int num, 33713569Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 33813569Sbrandon.potter@amd.com 33913569Sbrandon.potter@amd.com// Target recvfrom() handler. 34013569Sbrandon.potter@amd.comSyscallReturn recvfromFunc(SyscallDesc *desc, int num, 34113569Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 34213569Sbrandon.potter@amd.com 34313569Sbrandon.potter@amd.com// Target recvmsg() handler. 34413569Sbrandon.potter@amd.comSyscallReturn recvmsgFunc(SyscallDesc *desc, int num, 34513569Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 34613569Sbrandon.potter@amd.com 34713569Sbrandon.potter@amd.com// Target sendmsg() handler. 34813569Sbrandon.potter@amd.comSyscallReturn sendmsgFunc(SyscallDesc *desc, int num, 34913569Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 35013569Sbrandon.potter@amd.com 35113031Sbrandon.potter@amd.com// Target getuid() handler. 3522238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 35311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3542238SN/A 3552238SN/A/// Target getgid() handler. 3562238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 35711851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3582238SN/A 3592238SN/A/// Target getppid() handler. 3602238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 36111851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3622238SN/A 3632238SN/A/// Target geteuid() handler. 3642238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 36511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3662238SN/A 3672238SN/A/// Target getegid() handler. 3682238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 36911851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 3702238SN/A 3719455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3729455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 37311851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 37410203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 37511851Sbrandon.potter@amd.com Process *p, ThreadContext *tc, 37611851Sbrandon.potter@amd.com int index); 3779455Smitch.hayenga+gem5@gmail.com 3789112Smarc.orr@gmail.com/// Futex system call 37911906SBrandon.Potter@amd.com/// Implemented by Daniel Sanchez 38011906SBrandon.Potter@amd.com/// Used by printf's in multi-threaded apps 3819112Smarc.orr@gmail.comtemplate <class OS> 3829112Smarc.orr@gmail.comSyscallReturn 38311851Sbrandon.potter@amd.comfutexFunc(SyscallDesc *desc, int callnum, Process *process, 3849112Smarc.orr@gmail.com ThreadContext *tc) 3859112Smarc.orr@gmail.com{ 38611911SBrandon.Potter@amd.com using namespace std; 3879112Smarc.orr@gmail.com 38811911SBrandon.Potter@amd.com int index = 0; 38911911SBrandon.Potter@amd.com Addr uaddr = process->getSyscallArg(tc, index); 39011911SBrandon.Potter@amd.com int op = process->getSyscallArg(tc, index); 39111911SBrandon.Potter@amd.com int val = process->getSyscallArg(tc, index); 3929112Smarc.orr@gmail.com 39311911SBrandon.Potter@amd.com /* 39411911SBrandon.Potter@amd.com * Unsupported option that does not affect the correctness of the 39511911SBrandon.Potter@amd.com * application. This is a performance optimization utilized by Linux. 39611911SBrandon.Potter@amd.com */ 3979238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3989112Smarc.orr@gmail.com 39911911SBrandon.Potter@amd.com FutexMap &futex_map = tc->getSystemPtr()->futexMap; 4009112Smarc.orr@gmail.com 40111911SBrandon.Potter@amd.com if (OS::TGT_FUTEX_WAIT == op) { 40211911SBrandon.Potter@amd.com // Ensure futex system call accessed atomically. 40311911SBrandon.Potter@amd.com BufferArg buf(uaddr, sizeof(int)); 40411911SBrandon.Potter@amd.com buf.copyIn(tc->getMemProxy()); 40511911SBrandon.Potter@amd.com int mem_val = *(int*)buf.bufferPtr(); 4069112Smarc.orr@gmail.com 40711911SBrandon.Potter@amd.com /* 40811911SBrandon.Potter@amd.com * The value in memory at uaddr is not equal with the expected val 40911911SBrandon.Potter@amd.com * (a different thread must have changed it before the system call was 41011911SBrandon.Potter@amd.com * invoked). In this case, we need to throw an error. 41111911SBrandon.Potter@amd.com */ 41211911SBrandon.Potter@amd.com if (val != mem_val) 4139112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 4149112Smarc.orr@gmail.com 41511911SBrandon.Potter@amd.com futex_map.suspend(uaddr, process->tgid(), tc); 41611911SBrandon.Potter@amd.com 4179112Smarc.orr@gmail.com return 0; 41811911SBrandon.Potter@amd.com } else if (OS::TGT_FUTEX_WAKE == op) { 41911911SBrandon.Potter@amd.com return futex_map.wakeup(uaddr, process->tgid(), val); 4209112Smarc.orr@gmail.com } 4219112Smarc.orr@gmail.com 42211911SBrandon.Potter@amd.com warn("futex: op %d not implemented; ignoring.", op); 42311911SBrandon.Potter@amd.com return -ENOSYS; 4249112Smarc.orr@gmail.com} 4259112Smarc.orr@gmail.com 4262238SN/A 4272238SN/A/// Pseudo Funcs - These functions use a different return convension, 4282238SN/A/// returning a second value in a register other than the normal return register 4292238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 43011851Sbrandon.potter@amd.com Process *process, ThreadContext *tc); 4312238SN/A 4322238SN/A/// Target getpidPseudo() handler. 4332238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 43411851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 4352238SN/A 4362238SN/A/// Target getuidPseudo() handler. 4372238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 43811851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 4392238SN/A 4402238SN/A/// Target getgidPseudo() handler. 4412238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 44211851Sbrandon.potter@amd.com Process *p, ThreadContext *tc); 4432238SN/A 4442238SN/A 4451354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4461354SN/Aconst int one_million = 1000000; 44710796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 44810796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 4491354SN/A 4501354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4511354SN/A/// by my reckoning. We want to keep this a constant (not use the 4521354SN/A/// real-world time) to keep simulations repeatable. 4531354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4541354SN/A 4551354SN/A/// Helper function to convert current elapsed time to seconds and 4561354SN/A/// microseconds. 4571354SN/Atemplate <class T1, class T2> 4581354SN/Avoid 45910796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 4601354SN/A{ 46110796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 4621354SN/A sec = elapsed_usecs / one_million; 4631354SN/A usec = elapsed_usecs % one_million; 4641354SN/A} 4651354SN/A 46610796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 46710796Sbrandon.potter@amd.com/// nanoseconds. 46810796Sbrandon.potter@amd.comtemplate <class T1, class T2> 46910796Sbrandon.potter@amd.comvoid 47010796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 47110796Sbrandon.potter@amd.com{ 47210796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 47310796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 47410796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 47510796Sbrandon.potter@amd.com} 47610796Sbrandon.potter@amd.com 477360SN/A////////////////////////////////////////////////////////////////////// 478360SN/A// 479360SN/A// The following emulation functions are generic, but need to be 480360SN/A// templated to account for differences in types, constants, etc. 481360SN/A// 482360SN/A////////////////////////////////////////////////////////////////////// 483360SN/A 48411759Sbrandon.potter@amd.com typedef struct statfs hst_statfs; 4853113Sgblack@eecs.umich.edu#if NO_STAT64 4863113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4873113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4883113Sgblack@eecs.umich.edu#else 4893113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4903113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4913113Sgblack@eecs.umich.edu#endif 4923113Sgblack@eecs.umich.edu 4933113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4943113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4953113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4963113Sgblack@eecs.umich.edu 4973113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 49812032Sandreas.sandberg@arm.comvoid 4993113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 5003113Sgblack@eecs.umich.edu{ 5014189Sgblack@eecs.umich.edu using namespace TheISA; 5024189Sgblack@eecs.umich.edu 5033113Sgblack@eecs.umich.edu if (fakeTTY) 5043113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 5053113Sgblack@eecs.umich.edu else 5063113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 5078737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 5083113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 5098737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 5103277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 5115515SMichael.Adler@intel.com if (fakeTTY) { 5125515SMichael.Adler@intel.com // Claim to be a character device 5135515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 5145515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 5155515SMichael.Adler@intel.com } 5168737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 5173277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 5188737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 5193277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 5208737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 5213277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 5228737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 5233113Sgblack@eecs.umich.edu if (fakeTTY) 5243113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 5253113Sgblack@eecs.umich.edu else 5263113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 5278737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 5283113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 5298737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 5303114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5318737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5323114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5338737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5343114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5358737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 53611906SBrandon.Potter@amd.com // Force the block size to be 8KB. This helps to ensure buffered io works 5374061Sgblack@eecs.umich.edu // consistently across different hosts. 5384061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5398737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5403113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5418737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5423113Sgblack@eecs.umich.edu} 5433113Sgblack@eecs.umich.edu 5443113Sgblack@eecs.umich.edu// Same for stat64 5453113Sgblack@eecs.umich.edu 5463113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 54712032Sandreas.sandberg@arm.comvoid 5483113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5493113Sgblack@eecs.umich.edu{ 5504189Sgblack@eecs.umich.edu using namespace TheISA; 5514189Sgblack@eecs.umich.edu 5523113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5533113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5543113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5558737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5563113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5578737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5583113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5598737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5603113Sgblack@eecs.umich.edu#else 5613113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5623113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5633113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5643113Sgblack@eecs.umich.edu#endif 5653113Sgblack@eecs.umich.edu} 5663113Sgblack@eecs.umich.edu 56711906SBrandon.Potter@amd.com// Here are a couple of convenience functions 5683113Sgblack@eecs.umich.edutemplate<class OS> 56912032Sandreas.sandberg@arm.comvoid 5708852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 57111906SBrandon.Potter@amd.com hst_stat *host, bool fakeTTY = false) 5723113Sgblack@eecs.umich.edu{ 5733113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5743113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5753113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5763113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5773113Sgblack@eecs.umich.edu} 5783113Sgblack@eecs.umich.edu 5793113Sgblack@eecs.umich.edutemplate<class OS> 58012032Sandreas.sandberg@arm.comvoid 5818852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 58211906SBrandon.Potter@amd.com hst_stat64 *host, bool fakeTTY = false) 5833113Sgblack@eecs.umich.edu{ 5843113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5853113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5866686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5873113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5883113Sgblack@eecs.umich.edu} 5893113Sgblack@eecs.umich.edu 59011759Sbrandon.potter@amd.comtemplate <class OS> 59112032Sandreas.sandberg@arm.comvoid 59211759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 59311759Sbrandon.potter@amd.com hst_statfs *host) 59411759Sbrandon.potter@amd.com{ 59511759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 59611759Sbrandon.potter@amd.com 59711812Sbaz21@cam.ac.uk tgt->f_type = TheISA::htog(host->f_type); 59811812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 59911812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_iosize); 60011759Sbrandon.potter@amd.com#else 60111812Sbaz21@cam.ac.uk tgt->f_bsize = TheISA::htog(host->f_bsize); 60211759Sbrandon.potter@amd.com#endif 60311759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 60411759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 60511759Sbrandon.potter@amd.com tgt->f_bavail = TheISA::htog(host->f_bavail); 60611759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 60711759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 60811759Sbrandon.potter@amd.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 60911812Sbaz21@cam.ac.uk#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 61011812Sbaz21@cam.ac.uk tgt->f_namelen = TheISA::htog(host->f_namemax); 61111812Sbaz21@cam.ac.uk tgt->f_frsize = TheISA::htog(host->f_bsize); 61211812Sbaz21@cam.ac.uk#elif defined(__APPLE__) 61311812Sbaz21@cam.ac.uk tgt->f_namelen = 0; 61411812Sbaz21@cam.ac.uk tgt->f_frsize = 0; 61511812Sbaz21@cam.ac.uk#else 61611759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 61711759Sbrandon.potter@amd.com tgt->f_frsize = TheISA::htog(host->f_frsize); 61811812Sbaz21@cam.ac.uk#endif 61911812Sbaz21@cam.ac.uk#if defined(__linux__) 62011759Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 62111812Sbaz21@cam.ac.uk#else 62211812Sbaz21@cam.ac.uk /* 62311812Sbaz21@cam.ac.uk * The fields are different sizes per OS. Don't bother with 62411812Sbaz21@cam.ac.uk * f_spare or f_reserved on non-Linux for now. 62511812Sbaz21@cam.ac.uk */ 62611812Sbaz21@cam.ac.uk memset(&tgt->f_spare, 0, sizeof(tgt->f_spare)); 62711812Sbaz21@cam.ac.uk#endif 62811759Sbrandon.potter@amd.com 62911759Sbrandon.potter@amd.com tgt.copyOut(mem); 63011759Sbrandon.potter@amd.com} 63111759Sbrandon.potter@amd.com 632378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 633378SN/A/// only to find out if their stdout is a tty, to determine whether to 6349141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 6359141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 636360SN/Atemplate <class OS> 6371450SN/ASyscallReturn 63811856Sbrandon.potter@amd.comioctlFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 639360SN/A{ 6406701Sgblack@eecs.umich.edu int index = 0; 64111856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 64211856Sbrandon.potter@amd.com unsigned req = p->getSyscallArg(tc, index); 643360SN/A 64410930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 645360SN/A 64611856Sbrandon.potter@amd.com if (OS::isTtyReq(req)) 64711856Sbrandon.potter@amd.com return -ENOTTY; 64810496Ssteve.reinhardt@amd.com 64911856Sbrandon.potter@amd.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>((*p->fds)[tgt_fd]); 65011856Sbrandon.potter@amd.com if (!dfdp) 6511458SN/A return -EBADF; 652360SN/A 65311856Sbrandon.potter@amd.com /** 65411856Sbrandon.potter@amd.com * If the driver is valid, issue the ioctl through it. Otherwise, 65511856Sbrandon.potter@amd.com * there's an implicit assumption that the device is a TTY type and we 65611856Sbrandon.potter@amd.com * return that we do not have a valid TTY. 65711856Sbrandon.potter@amd.com */ 65811856Sbrandon.potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 65911856Sbrandon.potter@amd.com if (emul_driver) 66011856Sbrandon.potter@amd.com return emul_driver->ioctl(p, tc, req); 66110496Ssteve.reinhardt@amd.com 66211856Sbrandon.potter@amd.com /** 66311856Sbrandon.potter@amd.com * For lack of a better return code, return ENOTTY. Ideally, we should 66411856Sbrandon.potter@amd.com * return something better here, but at least we issue the warning. 66511856Sbrandon.potter@amd.com */ 66611856Sbrandon.potter@amd.com warn("Unsupported ioctl call (return ENOTTY): ioctl(%d, 0x%x, ...) @ \n", 66710930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 6689141Smarc.orr@gmail.com return -ENOTTY; 669360SN/A} 670360SN/A 671360SN/Atemplate <class OS> 67211907SBrandon.Potter@amd.comSyscallReturn 67311907SBrandon.Potter@amd.comopenImpl(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc, 67411907SBrandon.Potter@amd.com bool isopenat) 675360SN/A{ 67611907SBrandon.Potter@amd.com int index = 0; 67711907SBrandon.Potter@amd.com int tgt_dirfd = -1; 67811907SBrandon.Potter@amd.com 67911907SBrandon.Potter@amd.com /** 68011907SBrandon.Potter@amd.com * If using the openat variant, read in the target directory file 68111907SBrandon.Potter@amd.com * descriptor from the simulated process. 68211907SBrandon.Potter@amd.com */ 68311907SBrandon.Potter@amd.com if (isopenat) 68411907SBrandon.Potter@amd.com tgt_dirfd = p->getSyscallArg(tc, index); 68511907SBrandon.Potter@amd.com 68611907SBrandon.Potter@amd.com /** 68711907SBrandon.Potter@amd.com * Retrieve the simulated process' memory proxy and then read in the path 68811907SBrandon.Potter@amd.com * string from that memory space into the host's working memory space. 68911907SBrandon.Potter@amd.com */ 690360SN/A std::string path; 69111907SBrandon.Potter@amd.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 6921458SN/A return -EFAULT; 693360SN/A 69411907SBrandon.Potter@amd.com#ifdef __CYGWIN32__ 69511907SBrandon.Potter@amd.com int host_flags = O_BINARY; 69611907SBrandon.Potter@amd.com#else 69711907SBrandon.Potter@amd.com int host_flags = 0; 69811907SBrandon.Potter@amd.com#endif 69911907SBrandon.Potter@amd.com /** 70011907SBrandon.Potter@amd.com * Translate target flags into host flags. Flags exist which are not 70111907SBrandon.Potter@amd.com * ported between architectures which can cause check failures. 70211907SBrandon.Potter@amd.com */ 70311907SBrandon.Potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 704360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 70511907SBrandon.Potter@amd.com if (tgt_flags & OS::openFlagTable[i].tgtFlag) { 70611907SBrandon.Potter@amd.com tgt_flags &= ~OS::openFlagTable[i].tgtFlag; 70711907SBrandon.Potter@amd.com host_flags |= OS::openFlagTable[i].hostFlag; 708360SN/A } 709360SN/A } 71011907SBrandon.Potter@amd.com if (tgt_flags) { 71111907SBrandon.Potter@amd.com warn("open%s: cannot decode flags 0x%x", 71211907SBrandon.Potter@amd.com isopenat ? "at" : "", tgt_flags); 71311907SBrandon.Potter@amd.com } 714360SN/A#ifdef __CYGWIN32__ 71511907SBrandon.Potter@amd.com host_flags |= O_BINARY; 716360SN/A#endif 717360SN/A 71811907SBrandon.Potter@amd.com int mode = p->getSyscallArg(tc, index); 7193669Sbinkertn@umich.edu 72011907SBrandon.Potter@amd.com /** 72111907SBrandon.Potter@amd.com * If the simulated process called open or openat with AT_FDCWD specified, 72211907SBrandon.Potter@amd.com * take the current working directory value which was passed into the 72311907SBrandon.Potter@amd.com * process class as a Python parameter and append the current path to 72411907SBrandon.Potter@amd.com * create a full path. 72511907SBrandon.Potter@amd.com * Otherwise, openat with a valid target directory file descriptor has 72611907SBrandon.Potter@amd.com * been called. If the path option, which was passed in as a parameter, 72711907SBrandon.Potter@amd.com * is not absolute, retrieve the directory file descriptor's path and 72811907SBrandon.Potter@amd.com * prepend it to the path passed in as a parameter. 72911907SBrandon.Potter@amd.com * In every case, we should have a full path (which is relevant to the 73011907SBrandon.Potter@amd.com * host) to work with after this block has been passed. 73111907SBrandon.Potter@amd.com */ 73211907SBrandon.Potter@amd.com if (!isopenat || (isopenat && tgt_dirfd == OS::TGT_AT_FDCWD)) { 73311907SBrandon.Potter@amd.com path = p->fullPath(path); 73411907SBrandon.Potter@amd.com } else if (!startswith(path, "/")) { 73511907SBrandon.Potter@amd.com std::shared_ptr<FDEntry> fdep = ((*p->fds)[tgt_dirfd]); 73611907SBrandon.Potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 73711907SBrandon.Potter@amd.com if (!ffdp) 73811907SBrandon.Potter@amd.com return -EBADF; 73913371Sciro.santilli@arm.com path.insert(0, ffdp->getFileName() + "/"); 74011907SBrandon.Potter@amd.com } 7411706SN/A 74211907SBrandon.Potter@amd.com /** 74311907SBrandon.Potter@amd.com * Since this is an emulated environment, we create pseudo file 74411907SBrandon.Potter@amd.com * descriptors for device requests that have been registered with 74511907SBrandon.Potter@amd.com * the process class through Python; this allows us to create a file 74611907SBrandon.Potter@amd.com * descriptor for subsequent ioctl or mmap calls. 74711907SBrandon.Potter@amd.com */ 74810496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 74910496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 75011907SBrandon.Potter@amd.com EmulatedDriver *drv = p->findDriver(filename); 75111907SBrandon.Potter@amd.com if (drv) { 75211907SBrandon.Potter@amd.com DPRINTF_SYSCALL(Verbose, "open%s: passing call to " 75311907SBrandon.Potter@amd.com "driver open with path[%s]\n", 75411907SBrandon.Potter@amd.com isopenat ? "at" : "", path.c_str()); 75511907SBrandon.Potter@amd.com return drv->open(p, tc, mode, host_flags); 75610496Ssteve.reinhardt@amd.com } 75711907SBrandon.Potter@amd.com /** 75811907SBrandon.Potter@amd.com * Fall through here for pass through to host devices, such 75911907SBrandon.Potter@amd.com * as /dev/zero 76011907SBrandon.Potter@amd.com */ 76110496Ssteve.reinhardt@amd.com } 76210496Ssteve.reinhardt@amd.com 76311907SBrandon.Potter@amd.com /** 76411907SBrandon.Potter@amd.com * Some special paths and files cannot be called on the host and need 76511907SBrandon.Potter@amd.com * to be handled as special cases inside the simulator. 76611907SBrandon.Potter@amd.com * If the full path that was created above does not match any of the 76711907SBrandon.Potter@amd.com * special cases, pass it through to the open call on the host to let 76811907SBrandon.Potter@amd.com * the host open the file on our behalf. 76911907SBrandon.Potter@amd.com * If the host cannot open the file, return the host's error code back 77011907SBrandon.Potter@amd.com * through the system call to the simulated process. 77111907SBrandon.Potter@amd.com */ 77211907SBrandon.Potter@amd.com int sim_fd = -1; 77311907SBrandon.Potter@amd.com std::vector<std::string> special_paths = 77411907SBrandon.Potter@amd.com { "/proc/", "/system/", "/sys/", "/platform/", "/etc/passwd" }; 77511907SBrandon.Potter@amd.com for (auto entry : special_paths) { 77611907SBrandon.Potter@amd.com if (startswith(path, entry)) 77711907SBrandon.Potter@amd.com sim_fd = OS::openSpecialFile(path, p, tc); 77811907SBrandon.Potter@amd.com } 77911907SBrandon.Potter@amd.com if (sim_fd == -1) { 78011907SBrandon.Potter@amd.com sim_fd = open(path.c_str(), host_flags, mode); 78111907SBrandon.Potter@amd.com } 78211907SBrandon.Potter@amd.com if (sim_fd == -1) { 78311907SBrandon.Potter@amd.com int local = -errno; 78411907SBrandon.Potter@amd.com DPRINTF_SYSCALL(Verbose, "open%s: failed -> path:%s\n", 78511907SBrandon.Potter@amd.com isopenat ? "at" : "", path.c_str()); 78611907SBrandon.Potter@amd.com return local; 78711907SBrandon.Potter@amd.com } 788360SN/A 78911907SBrandon.Potter@amd.com /** 79011907SBrandon.Potter@amd.com * The file was opened successfully and needs to be recorded in the 79111907SBrandon.Potter@amd.com * process' file descriptor array so that it can be retrieved later. 79211907SBrandon.Potter@amd.com * The target file descriptor that is chosen will be the lowest unused 79311907SBrandon.Potter@amd.com * file descriptor. 79411907SBrandon.Potter@amd.com * Return the indirect target file descriptor back to the simulated 79511907SBrandon.Potter@amd.com * process to act as a handle for the opened file. 79611907SBrandon.Potter@amd.com */ 79711907SBrandon.Potter@amd.com auto ffdp = std::make_shared<FileFDEntry>(sim_fd, host_flags, path, 0); 79811907SBrandon.Potter@amd.com int tgt_fd = p->fds->allocFD(ffdp); 79911907SBrandon.Potter@amd.com DPRINTF_SYSCALL(Verbose, "open%s: sim_fd[%d], target_fd[%d] -> path:%s\n", 80011907SBrandon.Potter@amd.com isopenat ? "at" : "", sim_fd, tgt_fd, path.c_str()); 80111907SBrandon.Potter@amd.com return tgt_fd; 802360SN/A} 803360SN/A 80410027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 80510027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 80610027SChris.Adeniyi-Jones@arm.comSyscallReturn 80711851Sbrandon.potter@amd.comopenFunc(SyscallDesc *desc, int callnum, Process *process, 80810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 80910027SChris.Adeniyi-Jones@arm.com{ 81011907SBrandon.Potter@amd.com return openImpl<OS>(desc, callnum, process, tc, false); 81110027SChris.Adeniyi-Jones@arm.com} 81210027SChris.Adeniyi-Jones@arm.com 81310027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 81410027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 81510027SChris.Adeniyi-Jones@arm.comSyscallReturn 81611851Sbrandon.potter@amd.comopenatFunc(SyscallDesc *desc, int callnum, Process *process, 81711851Sbrandon.potter@amd.com ThreadContext *tc) 81810027SChris.Adeniyi-Jones@arm.com{ 81911907SBrandon.Potter@amd.com return openImpl<OS>(desc, callnum, process, tc, true); 82010027SChris.Adeniyi-Jones@arm.com} 82110027SChris.Adeniyi-Jones@arm.com 82210633Smichaelupton@gmail.com/// Target unlinkat() handler. 82310633Smichaelupton@gmail.comtemplate <class OS> 82410633Smichaelupton@gmail.comSyscallReturn 82511851Sbrandon.potter@amd.comunlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 82610633Smichaelupton@gmail.com ThreadContext *tc) 82710633Smichaelupton@gmail.com{ 82810633Smichaelupton@gmail.com int index = 0; 82910633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 83010633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 83110633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 83210633Smichaelupton@gmail.com 83310633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 83410633Smichaelupton@gmail.com} 83510633Smichaelupton@gmail.com 83610203SAli.Saidi@ARM.com/// Target facessat() handler 83710203SAli.Saidi@ARM.comtemplate <class OS> 83810203SAli.Saidi@ARM.comSyscallReturn 83911851Sbrandon.potter@amd.comfaccessatFunc(SyscallDesc *desc, int callnum, Process *process, 84011851Sbrandon.potter@amd.com ThreadContext *tc) 84110203SAli.Saidi@ARM.com{ 84210203SAli.Saidi@ARM.com int index = 0; 84310203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 84410203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 84510203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 84610203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 84710203SAli.Saidi@ARM.com} 84810203SAli.Saidi@ARM.com 84910203SAli.Saidi@ARM.com/// Target readlinkat() handler 85010203SAli.Saidi@ARM.comtemplate <class OS> 85110203SAli.Saidi@ARM.comSyscallReturn 85211851Sbrandon.potter@amd.comreadlinkatFunc(SyscallDesc *desc, int callnum, Process *process, 85311851Sbrandon.potter@amd.com ThreadContext *tc) 85410203SAli.Saidi@ARM.com{ 85510203SAli.Saidi@ARM.com int index = 0; 85610203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 85710203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 85810203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 85910203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 86010203SAli.Saidi@ARM.com} 86110203SAli.Saidi@ARM.com 86210850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 86310850SGiacomo.Gabrielli@arm.comtemplate <class OS> 86410850SGiacomo.Gabrielli@arm.comSyscallReturn 86511851Sbrandon.potter@amd.comrenameatFunc(SyscallDesc *desc, int callnum, Process *process, 86610850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 86710850SGiacomo.Gabrielli@arm.com{ 86810850SGiacomo.Gabrielli@arm.com int index = 0; 86910850SGiacomo.Gabrielli@arm.com 87010850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 87110850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 87210850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 87310850SGiacomo.Gabrielli@arm.com 87410850SGiacomo.Gabrielli@arm.com std::string old_name; 87510850SGiacomo.Gabrielli@arm.com 87610850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 87710850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 87810850SGiacomo.Gabrielli@arm.com return -EFAULT; 87910850SGiacomo.Gabrielli@arm.com 88010850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 88110850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 88210850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 88310850SGiacomo.Gabrielli@arm.com 88410850SGiacomo.Gabrielli@arm.com std::string new_name; 88510850SGiacomo.Gabrielli@arm.com 88610850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 88710850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 88810850SGiacomo.Gabrielli@arm.com return -EFAULT; 88910850SGiacomo.Gabrielli@arm.com 89010850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 89110850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 89210850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 89310850SGiacomo.Gabrielli@arm.com 89410850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 89510850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 89610850SGiacomo.Gabrielli@arm.com} 89710850SGiacomo.Gabrielli@arm.com 8986640Svince@csl.cornell.edu/// Target sysinfo() handler. 8996640Svince@csl.cornell.edutemplate <class OS> 9006640Svince@csl.cornell.eduSyscallReturn 90111851Sbrandon.potter@amd.comsysinfoFunc(SyscallDesc *desc, int callnum, Process *process, 90211851Sbrandon.potter@amd.com ThreadContext *tc) 9036640Svince@csl.cornell.edu{ 9046640Svince@csl.cornell.edu 9056701Sgblack@eecs.umich.edu int index = 0; 9066701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 90710793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 9086640Svince@csl.cornell.edu 90911758Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 91011758Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 91111758Sbrandon.potter@amd.com sysinfo->mem_unit = 1; 9126640Svince@csl.cornell.edu 9138706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 9146640Svince@csl.cornell.edu 9156701Sgblack@eecs.umich.edu return 0; 9166640Svince@csl.cornell.edu} 917360SN/A 9181999SN/A/// Target chmod() handler. 9191999SN/Atemplate <class OS> 9201999SN/ASyscallReturn 92111851Sbrandon.potter@amd.comchmodFunc(SyscallDesc *desc, int callnum, Process *process, 9222680Sktlim@umich.edu ThreadContext *tc) 9231999SN/A{ 9241999SN/A std::string path; 9251999SN/A 9266701Sgblack@eecs.umich.edu int index = 0; 9278852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9286701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9291999SN/A return -EFAULT; 9306701Sgblack@eecs.umich.edu } 9311999SN/A 9326701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 9331999SN/A mode_t hostMode = 0; 9341999SN/A 9351999SN/A // XXX translate mode flags via OS::something??? 9361999SN/A hostMode = mode; 9371999SN/A 9383669Sbinkertn@umich.edu // Adjust path for current working directory 9393669Sbinkertn@umich.edu path = process->fullPath(path); 9403669Sbinkertn@umich.edu 9411999SN/A // do the chmod 9421999SN/A int result = chmod(path.c_str(), hostMode); 9431999SN/A if (result < 0) 9442218SN/A return -errno; 9451999SN/A 9461999SN/A return 0; 9471999SN/A} 9481999SN/A 9491999SN/A 9501999SN/A/// Target fchmod() handler. 9511999SN/Atemplate <class OS> 9521999SN/ASyscallReturn 95311856Sbrandon.potter@amd.comfchmodFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 9541999SN/A{ 9556701Sgblack@eecs.umich.edu int index = 0; 95611856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 95711856Sbrandon.potter@amd.com uint32_t mode = p->getSyscallArg(tc, index); 95810931Sbrandon.potter@amd.com 95911856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 96011856Sbrandon.potter@amd.com if (!ffdp) 9611999SN/A return -EBADF; 96211856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 9631999SN/A 96411856Sbrandon.potter@amd.com mode_t hostMode = mode; 9651999SN/A 96611856Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 9671999SN/A 96811856Sbrandon.potter@amd.com return (result < 0) ? -errno : 0; 9691999SN/A} 9701999SN/A 9715877Shsul@eecs.umich.edu/// Target mremap() handler. 9725877Shsul@eecs.umich.edutemplate <class OS> 9735877Shsul@eecs.umich.eduSyscallReturn 97411851Sbrandon.potter@amd.commremapFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 9755877Shsul@eecs.umich.edu{ 9766701Sgblack@eecs.umich.edu int index = 0; 9776701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 9786701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 9796701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 9806701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 98110027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 98210027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 98310027SChris.Adeniyi-Jones@arm.com 98410027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 98510027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 9865877Shsul@eecs.umich.edu 98710318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 98810318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 9895877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 9905877Shsul@eecs.umich.edu return -EINVAL; 9915877Shsul@eecs.umich.edu } 9925877Shsul@eecs.umich.edu 99310486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 99410486Stjablin@gmail.com 9955877Shsul@eecs.umich.edu if (new_length > old_length) { 99611905SBrandon.Potter@amd.com std::shared_ptr<MemState> mem_state = process->memState; 99711905SBrandon.Potter@amd.com Addr mmap_end = mem_state->getMmapEnd(); 99811905SBrandon.Potter@amd.com 99911905SBrandon.Potter@amd.com if ((start + old_length) == mmap_end && 100010027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 100112206Srico.amslinger@informatik.uni-augsburg.de // This case cannot occur when growing downward, as 100212206Srico.amslinger@informatik.uni-augsburg.de // start is greater than or equal to mmap_end. 10035877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 100411905SBrandon.Potter@amd.com process->allocateMem(mmap_end, diff); 100511905SBrandon.Potter@amd.com mem_state->setMmapEnd(mmap_end + diff); 10065877Shsul@eecs.umich.edu return start; 10075877Shsul@eecs.umich.edu } else { 100810027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 10095877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 10105877Shsul@eecs.umich.edu return -ENOMEM; 10115877Shsul@eecs.umich.edu } else { 101212206Srico.amslinger@informatik.uni-augsburg.de uint64_t new_start = provided_address; 101312206Srico.amslinger@informatik.uni-augsburg.de if (!use_provided_address) { 101412206Srico.amslinger@informatik.uni-augsburg.de new_start = process->mmapGrowsDown() ? 101512206Srico.amslinger@informatik.uni-augsburg.de mmap_end - new_length : mmap_end; 101612206Srico.amslinger@informatik.uni-augsburg.de mmap_end = process->mmapGrowsDown() ? 101712206Srico.amslinger@informatik.uni-augsburg.de new_start : mmap_end + new_length; 101812206Srico.amslinger@informatik.uni-augsburg.de mem_state->setMmapEnd(mmap_end); 101912206Srico.amslinger@informatik.uni-augsburg.de } 102012206Srico.amslinger@informatik.uni-augsburg.de 102110027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 102210027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 102310027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 102410027SChris.Adeniyi-Jones@arm.com new_length - old_length); 10255877Shsul@eecs.umich.edu // add on the remaining unallocated pages 102610027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 102710027SChris.Adeniyi-Jones@arm.com new_length - old_length, 102810027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 102910027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 103012206Srico.amslinger@informatik.uni-augsburg.de ((new_start + new_length > mem_state->getMmapEnd() && 103112206Srico.amslinger@informatik.uni-augsburg.de !process->mmapGrowsDown()) || 103212206Srico.amslinger@informatik.uni-augsburg.de (new_start < mem_state->getMmapEnd() && 103312206Srico.amslinger@informatik.uni-augsburg.de process->mmapGrowsDown()))) { 103410027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 103510027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 103610027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 103710027SChris.Adeniyi-Jones@arm.com } 103810027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 103910027SChris.Adeniyi-Jones@arm.com return new_start; 10405877Shsul@eecs.umich.edu } 10415877Shsul@eecs.umich.edu } 10425877Shsul@eecs.umich.edu } else { 104310027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 104410027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 10458601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 104610027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 10475877Shsul@eecs.umich.edu } 10485877Shsul@eecs.umich.edu} 10491999SN/A 1050378SN/A/// Target stat() handler. 1051360SN/Atemplate <class OS> 10521450SN/ASyscallReturn 105311851Sbrandon.potter@amd.comstatFunc(SyscallDesc *desc, int callnum, Process *process, 10542680Sktlim@umich.edu ThreadContext *tc) 1055360SN/A{ 1056360SN/A std::string path; 1057360SN/A 10586701Sgblack@eecs.umich.edu int index = 0; 10598852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10606701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10616701Sgblack@eecs.umich.edu return -EFAULT; 10626701Sgblack@eecs.umich.edu } 10636701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1064360SN/A 10653669Sbinkertn@umich.edu // Adjust path for current working directory 10663669Sbinkertn@umich.edu path = process->fullPath(path); 10673669Sbinkertn@umich.edu 1068360SN/A struct stat hostBuf; 1069360SN/A int result = stat(path.c_str(), &hostBuf); 1070360SN/A 1071360SN/A if (result < 0) 10722218SN/A return -errno; 1073360SN/A 10748706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1075360SN/A 10761458SN/A return 0; 1077360SN/A} 1078360SN/A 1079360SN/A 10805074Ssaidi@eecs.umich.edu/// Target stat64() handler. 10815074Ssaidi@eecs.umich.edutemplate <class OS> 10825074Ssaidi@eecs.umich.eduSyscallReturn 108311851Sbrandon.potter@amd.comstat64Func(SyscallDesc *desc, int callnum, Process *process, 10845074Ssaidi@eecs.umich.edu ThreadContext *tc) 10855074Ssaidi@eecs.umich.edu{ 10865074Ssaidi@eecs.umich.edu std::string path; 10875074Ssaidi@eecs.umich.edu 10886701Sgblack@eecs.umich.edu int index = 0; 10898852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10906701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 10915074Ssaidi@eecs.umich.edu return -EFAULT; 10926701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10935074Ssaidi@eecs.umich.edu 10945074Ssaidi@eecs.umich.edu // Adjust path for current working directory 10955074Ssaidi@eecs.umich.edu path = process->fullPath(path); 10965074Ssaidi@eecs.umich.edu 10975208Ssaidi@eecs.umich.edu#if NO_STAT64 10985208Ssaidi@eecs.umich.edu struct stat hostBuf; 10995208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 11005208Ssaidi@eecs.umich.edu#else 11015074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 11025074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 11035208Ssaidi@eecs.umich.edu#endif 11045074Ssaidi@eecs.umich.edu 11055074Ssaidi@eecs.umich.edu if (result < 0) 11065074Ssaidi@eecs.umich.edu return -errno; 11075074Ssaidi@eecs.umich.edu 11088706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11095074Ssaidi@eecs.umich.edu 11105074Ssaidi@eecs.umich.edu return 0; 11115074Ssaidi@eecs.umich.edu} 11125074Ssaidi@eecs.umich.edu 11135074Ssaidi@eecs.umich.edu 111410027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 111510027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 111610027SChris.Adeniyi-Jones@arm.comSyscallReturn 111711851Sbrandon.potter@amd.comfstatat64Func(SyscallDesc *desc, int callnum, Process *process, 111810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 111910027SChris.Adeniyi-Jones@arm.com{ 112010027SChris.Adeniyi-Jones@arm.com int index = 0; 112110027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 112210027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 112310793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 112410027SChris.Adeniyi-Jones@arm.com 112510027SChris.Adeniyi-Jones@arm.com std::string path; 112610027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 112710027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 112810027SChris.Adeniyi-Jones@arm.com return -EFAULT; 112910027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 113010027SChris.Adeniyi-Jones@arm.com 113110027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 113210027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 113310027SChris.Adeniyi-Jones@arm.com 113410027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 113510027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 113610027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 113710027SChris.Adeniyi-Jones@arm.com#else 113810027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 113910027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 114010027SChris.Adeniyi-Jones@arm.com#endif 114110027SChris.Adeniyi-Jones@arm.com 114210027SChris.Adeniyi-Jones@arm.com if (result < 0) 114310027SChris.Adeniyi-Jones@arm.com return -errno; 114410027SChris.Adeniyi-Jones@arm.com 114510027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 114610027SChris.Adeniyi-Jones@arm.com 114710027SChris.Adeniyi-Jones@arm.com return 0; 114810027SChris.Adeniyi-Jones@arm.com} 114910027SChris.Adeniyi-Jones@arm.com 115010027SChris.Adeniyi-Jones@arm.com 11511999SN/A/// Target fstat64() handler. 11521999SN/Atemplate <class OS> 11531999SN/ASyscallReturn 115411856Sbrandon.potter@amd.comfstat64Func(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 11551999SN/A{ 11566701Sgblack@eecs.umich.edu int index = 0; 115711856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 115811856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 115910931Sbrandon.potter@amd.com 116011856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 116111856Sbrandon.potter@amd.com if (!ffdp) 11621999SN/A return -EBADF; 116311856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 11641999SN/A 11652764Sstever@eecs.umich.edu#if NO_STAT64 11662064SN/A struct stat hostBuf; 116710931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 11682064SN/A#else 11692064SN/A struct stat64 hostBuf; 117010931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 11712064SN/A#endif 11721999SN/A 11731999SN/A if (result < 0) 11742218SN/A return -errno; 11751999SN/A 117610931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11771999SN/A 11781999SN/A return 0; 11791999SN/A} 11801999SN/A 11811999SN/A 1182378SN/A/// Target lstat() handler. 1183360SN/Atemplate <class OS> 11841450SN/ASyscallReturn 118511851Sbrandon.potter@amd.comlstatFunc(SyscallDesc *desc, int callnum, Process *process, 11862680Sktlim@umich.edu ThreadContext *tc) 1187360SN/A{ 1188360SN/A std::string path; 1189360SN/A 11906701Sgblack@eecs.umich.edu int index = 0; 11918852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11926701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11936701Sgblack@eecs.umich.edu return -EFAULT; 11946701Sgblack@eecs.umich.edu } 11956701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1196360SN/A 11973669Sbinkertn@umich.edu // Adjust path for current working directory 11983669Sbinkertn@umich.edu path = process->fullPath(path); 11993669Sbinkertn@umich.edu 1200360SN/A struct stat hostBuf; 1201360SN/A int result = lstat(path.c_str(), &hostBuf); 1202360SN/A 1203360SN/A if (result < 0) 12041458SN/A return -errno; 1205360SN/A 12068706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1207360SN/A 12081458SN/A return 0; 1209360SN/A} 1210360SN/A 12111999SN/A/// Target lstat64() handler. 12121999SN/Atemplate <class OS> 12131999SN/ASyscallReturn 121411851Sbrandon.potter@amd.comlstat64Func(SyscallDesc *desc, int callnum, Process *process, 12152680Sktlim@umich.edu ThreadContext *tc) 12161999SN/A{ 12171999SN/A std::string path; 12181999SN/A 12196701Sgblack@eecs.umich.edu int index = 0; 12208852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 12216701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 12226701Sgblack@eecs.umich.edu return -EFAULT; 12236701Sgblack@eecs.umich.edu } 12246701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 12251999SN/A 12263669Sbinkertn@umich.edu // Adjust path for current working directory 12273669Sbinkertn@umich.edu path = process->fullPath(path); 12283669Sbinkertn@umich.edu 12292764Sstever@eecs.umich.edu#if NO_STAT64 12302064SN/A struct stat hostBuf; 12312064SN/A int result = lstat(path.c_str(), &hostBuf); 12322064SN/A#else 12331999SN/A struct stat64 hostBuf; 12341999SN/A int result = lstat64(path.c_str(), &hostBuf); 12352064SN/A#endif 12361999SN/A 12371999SN/A if (result < 0) 12381999SN/A return -errno; 12391999SN/A 12408706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 12411999SN/A 12421999SN/A return 0; 12431999SN/A} 12441999SN/A 1245378SN/A/// Target fstat() handler. 1246360SN/Atemplate <class OS> 12471450SN/ASyscallReturn 124811856Sbrandon.potter@amd.comfstatFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 1249360SN/A{ 12506701Sgblack@eecs.umich.edu int index = 0; 125111856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 125211856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 1253360SN/A 125411380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1255360SN/A 125611856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 125711856Sbrandon.potter@amd.com if (!ffdp) 12581458SN/A return -EBADF; 125911856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 1260360SN/A 1261360SN/A struct stat hostBuf; 126210931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1263360SN/A 1264360SN/A if (result < 0) 12651458SN/A return -errno; 1266360SN/A 126710931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 12682021SN/A 12691458SN/A return 0; 1270360SN/A} 1271360SN/A 1272360SN/A 12731706SN/A/// Target statfs() handler. 12741706SN/Atemplate <class OS> 12751706SN/ASyscallReturn 127611851Sbrandon.potter@amd.comstatfsFunc(SyscallDesc *desc, int callnum, Process *process, 12772680Sktlim@umich.edu ThreadContext *tc) 12781706SN/A{ 127911799Sbrandon.potter@amd.com#if NO_STATFS 128011799Sbrandon.potter@amd.com warn("Host OS cannot support calls to statfs. Ignoring syscall"); 128111799Sbrandon.potter@amd.com#else 12821706SN/A std::string path; 12831706SN/A 12846701Sgblack@eecs.umich.edu int index = 0; 12858852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 12866701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 12876701Sgblack@eecs.umich.edu return -EFAULT; 12886701Sgblack@eecs.umich.edu } 12896701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 12901706SN/A 12913669Sbinkertn@umich.edu // Adjust path for current working directory 12923669Sbinkertn@umich.edu path = process->fullPath(path); 12933669Sbinkertn@umich.edu 12941706SN/A struct statfs hostBuf; 12951706SN/A int result = statfs(path.c_str(), &hostBuf); 12961706SN/A 12971706SN/A if (result < 0) 12982218SN/A return -errno; 12991706SN/A 130011759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 130111799Sbrandon.potter@amd.com#endif 13021706SN/A return 0; 13031706SN/A} 13041706SN/A 130511886Sbrandon.potter@amd.comtemplate <class OS> 130611886Sbrandon.potter@amd.comSyscallReturn 130711886Sbrandon.potter@amd.comcloneFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 130811886Sbrandon.potter@amd.com{ 130911886Sbrandon.potter@amd.com int index = 0; 131012426Sqtt2@cornell.edu 131113557Sgabeblack@google.com RegVal flags = p->getSyscallArg(tc, index); 131213557Sgabeblack@google.com RegVal newStack = p->getSyscallArg(tc, index); 131311886Sbrandon.potter@amd.com Addr ptidPtr = p->getSyscallArg(tc, index); 131412426Sqtt2@cornell.edu 131513534Sandreas.sandberg@arm.com#if THE_ISA == RISCV_ISA or THE_ISA == ARM_ISA 131612426Sqtt2@cornell.edu /** 131713534Sandreas.sandberg@arm.com * Linux sets CLONE_BACKWARDS flag for RISC-V and Arm. 131812426Sqtt2@cornell.edu * The flag defines the list of clone() arguments in the following 131912426Sqtt2@cornell.edu * order: flags -> newStack -> ptidPtr -> tlsPtr -> ctidPtr 132012426Sqtt2@cornell.edu */ 132113536Sandreas.sandberg@arm.com Addr tlsPtr = p->getSyscallArg(tc, index); 132212426Sqtt2@cornell.edu Addr ctidPtr = p->getSyscallArg(tc, index); 132312426Sqtt2@cornell.edu#else 132411886Sbrandon.potter@amd.com Addr ctidPtr = p->getSyscallArg(tc, index); 132513536Sandreas.sandberg@arm.com Addr tlsPtr = p->getSyscallArg(tc, index); 132612426Sqtt2@cornell.edu#endif 132711886Sbrandon.potter@amd.com 132811886Sbrandon.potter@amd.com if (((flags & OS::TGT_CLONE_SIGHAND)&& !(flags & OS::TGT_CLONE_VM)) || 132911886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_THREAD) && !(flags & OS::TGT_CLONE_SIGHAND)) || 133011886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_FS) && (flags & OS::TGT_CLONE_NEWNS)) || 133111886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_NEWIPC) && (flags & OS::TGT_CLONE_SYSVSEM)) || 133211886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_NEWPID) && (flags & OS::TGT_CLONE_THREAD)) || 133311886Sbrandon.potter@amd.com ((flags & OS::TGT_CLONE_VM) && !(newStack))) 133411886Sbrandon.potter@amd.com return -EINVAL; 133511886Sbrandon.potter@amd.com 133611886Sbrandon.potter@amd.com ThreadContext *ctc; 133711886Sbrandon.potter@amd.com if (!(ctc = p->findFreeContext())) 133811886Sbrandon.potter@amd.com fatal("clone: no spare thread context in system"); 133911886Sbrandon.potter@amd.com 134011886Sbrandon.potter@amd.com /** 134111886Sbrandon.potter@amd.com * Note that ProcessParams is generated by swig and there are no other 134211886Sbrandon.potter@amd.com * examples of how to create anything but this default constructor. The 134311886Sbrandon.potter@amd.com * fields are manually initialized instead of passing parameters to the 134411886Sbrandon.potter@amd.com * constructor. 134511886Sbrandon.potter@amd.com */ 134611886Sbrandon.potter@amd.com ProcessParams *pp = new ProcessParams(); 134711886Sbrandon.potter@amd.com pp->executable.assign(*(new std::string(p->progName()))); 134811886Sbrandon.potter@amd.com pp->cmd.push_back(*(new std::string(p->progName()))); 134911886Sbrandon.potter@amd.com pp->system = p->system; 135011886Sbrandon.potter@amd.com pp->cwd.assign(p->getcwd()); 135111886Sbrandon.potter@amd.com pp->input.assign("stdin"); 135211886Sbrandon.potter@amd.com pp->output.assign("stdout"); 135311886Sbrandon.potter@amd.com pp->errout.assign("stderr"); 135411886Sbrandon.potter@amd.com pp->uid = p->uid(); 135511886Sbrandon.potter@amd.com pp->euid = p->euid(); 135611886Sbrandon.potter@amd.com pp->gid = p->gid(); 135711886Sbrandon.potter@amd.com pp->egid = p->egid(); 135811886Sbrandon.potter@amd.com 135911886Sbrandon.potter@amd.com /* Find the first free PID that's less than the maximum */ 136011886Sbrandon.potter@amd.com std::set<int> const& pids = p->system->PIDs; 136111886Sbrandon.potter@amd.com int temp_pid = *pids.begin(); 136211886Sbrandon.potter@amd.com do { 136311886Sbrandon.potter@amd.com temp_pid++; 136411886Sbrandon.potter@amd.com } while (pids.find(temp_pid) != pids.end()); 136511886Sbrandon.potter@amd.com if (temp_pid >= System::maxPID) 136611886Sbrandon.potter@amd.com fatal("temp_pid is too large: %d", temp_pid); 136711886Sbrandon.potter@amd.com 136811886Sbrandon.potter@amd.com pp->pid = temp_pid; 136911886Sbrandon.potter@amd.com pp->ppid = (flags & OS::TGT_CLONE_THREAD) ? p->ppid() : p->pid(); 137011886Sbrandon.potter@amd.com Process *cp = pp->create(); 137111886Sbrandon.potter@amd.com delete pp; 137211886Sbrandon.potter@amd.com 137311886Sbrandon.potter@amd.com Process *owner = ctc->getProcessPtr(); 137411886Sbrandon.potter@amd.com ctc->setProcessPtr(cp); 137511886Sbrandon.potter@amd.com cp->assignThreadContext(ctc->contextId()); 137611886Sbrandon.potter@amd.com owner->revokeThreadContext(ctc->contextId()); 137711886Sbrandon.potter@amd.com 137811886Sbrandon.potter@amd.com if (flags & OS::TGT_CLONE_PARENT_SETTID) { 137911886Sbrandon.potter@amd.com BufferArg ptidBuf(ptidPtr, sizeof(long)); 138011886Sbrandon.potter@amd.com long *ptid = (long *)ptidBuf.bufferPtr(); 138111886Sbrandon.potter@amd.com *ptid = cp->pid(); 138211886Sbrandon.potter@amd.com ptidBuf.copyOut(tc->getMemProxy()); 138311886Sbrandon.potter@amd.com } 138411886Sbrandon.potter@amd.com 138511886Sbrandon.potter@amd.com cp->initState(); 138611886Sbrandon.potter@amd.com p->clone(tc, ctc, cp, flags); 138711886Sbrandon.potter@amd.com 138811911SBrandon.Potter@amd.com if (flags & OS::TGT_CLONE_THREAD) { 138911911SBrandon.Potter@amd.com delete cp->sigchld; 139011911SBrandon.Potter@amd.com cp->sigchld = p->sigchld; 139111911SBrandon.Potter@amd.com } else if (flags & OS::TGT_SIGCHLD) { 139211911SBrandon.Potter@amd.com *cp->sigchld = true; 139311911SBrandon.Potter@amd.com } 139411911SBrandon.Potter@amd.com 139511886Sbrandon.potter@amd.com if (flags & OS::TGT_CLONE_CHILD_SETTID) { 139611886Sbrandon.potter@amd.com BufferArg ctidBuf(ctidPtr, sizeof(long)); 139711886Sbrandon.potter@amd.com long *ctid = (long *)ctidBuf.bufferPtr(); 139811886Sbrandon.potter@amd.com *ctid = cp->pid(); 139911886Sbrandon.potter@amd.com ctidBuf.copyOut(ctc->getMemProxy()); 140011886Sbrandon.potter@amd.com } 140111886Sbrandon.potter@amd.com 140211886Sbrandon.potter@amd.com if (flags & OS::TGT_CLONE_CHILD_CLEARTID) 140311886Sbrandon.potter@amd.com cp->childClearTID = (uint64_t)ctidPtr; 140411886Sbrandon.potter@amd.com 140511886Sbrandon.potter@amd.com ctc->clearArchRegs(); 140611886Sbrandon.potter@amd.com 140713536Sandreas.sandberg@arm.com OS::archClone(flags, p, cp, tc, ctc, newStack, tlsPtr); 140811886Sbrandon.potter@amd.com 140911886Sbrandon.potter@amd.com cp->setSyscallReturn(ctc, 0); 141011886Sbrandon.potter@amd.com 141111886Sbrandon.potter@amd.com#if THE_ISA == ALPHA_ISA 141211886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::SyscallSuccessReg, 0); 141311886Sbrandon.potter@amd.com#elif THE_ISA == SPARC_ISA 141411886Sbrandon.potter@amd.com tc->setIntReg(TheISA::SyscallPseudoReturnReg, 0); 141511886Sbrandon.potter@amd.com ctc->setIntReg(TheISA::SyscallPseudoReturnReg, 1); 141611886Sbrandon.potter@amd.com#endif 141711886Sbrandon.potter@amd.com 141813535Sandreas.sandberg@arm.com TheISA::PCState cpc = tc->pcState(); 141913535Sandreas.sandberg@arm.com cpc.advance(); 142013535Sandreas.sandberg@arm.com ctc->pcState(cpc); 142111886Sbrandon.potter@amd.com ctc->activate(); 142211886Sbrandon.potter@amd.com 142311886Sbrandon.potter@amd.com return cp->pid(); 142411886Sbrandon.potter@amd.com} 14251706SN/A 14261706SN/A/// Target fstatfs() handler. 14271706SN/Atemplate <class OS> 14281706SN/ASyscallReturn 142911856Sbrandon.potter@amd.comfstatfsFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 14301706SN/A{ 14316701Sgblack@eecs.umich.edu int index = 0; 143211856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 143311856Sbrandon.potter@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 14341706SN/A 143511856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 143611856Sbrandon.potter@amd.com if (!ffdp) 14371706SN/A return -EBADF; 143811856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 14391706SN/A 14401706SN/A struct statfs hostBuf; 144110931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 14421706SN/A 14431706SN/A if (result < 0) 14442218SN/A return -errno; 14451706SN/A 144611759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 14471706SN/A 14481706SN/A return 0; 14491706SN/A} 14501706SN/A 14511706SN/A 14521999SN/A/// Target writev() handler. 14531999SN/Atemplate <class OS> 14541999SN/ASyscallReturn 145511856Sbrandon.potter@amd.comwritevFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 14561999SN/A{ 14576701Sgblack@eecs.umich.edu int index = 0; 145811856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 145910931Sbrandon.potter@amd.com 146011856Sbrandon.potter@amd.com auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 146111856Sbrandon.potter@amd.com if (!hbfdp) 14621999SN/A return -EBADF; 146311856Sbrandon.potter@amd.com int sim_fd = hbfdp->getSimFD(); 14641999SN/A 146511856Sbrandon.potter@amd.com SETranslatingPortProxy &prox = tc->getMemProxy(); 146611856Sbrandon.potter@amd.com uint64_t tiov_base = p->getSyscallArg(tc, index); 146711856Sbrandon.potter@amd.com size_t count = p->getSyscallArg(tc, index); 14681999SN/A struct iovec hiov[count]; 14696227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 14701999SN/A typename OS::tgt_iovec tiov; 14712461SN/A 147211856Sbrandon.potter@amd.com prox.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 147311856Sbrandon.potter@amd.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 14748737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 14751999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 147611856Sbrandon.potter@amd.com prox.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 147711856Sbrandon.potter@amd.com hiov[i].iov_len); 14781999SN/A } 14791999SN/A 148010931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 14811999SN/A 14826227Snate@binkert.org for (size_t i = 0; i < count; ++i) 14831999SN/A delete [] (char *)hiov[i].iov_base; 14841999SN/A 14851999SN/A if (result < 0) 14862218SN/A return -errno; 14871999SN/A 148810629Sjthestness@gmail.com return result; 14891999SN/A} 14901999SN/A 149111385Sbrandon.potter@amd.com/// Real mmap handler. 1492360SN/Atemplate <class OS> 14931450SN/ASyscallReturn 149411851Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 149511385Sbrandon.potter@amd.com bool is_mmap2) 1496360SN/A{ 14976701Sgblack@eecs.umich.edu int index = 0; 14986701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 14996701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 150011383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 150111383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 15028324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 150310486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1504360SN/A 150511385Sbrandon.potter@amd.com if (is_mmap2) 150611385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 15079008Sgblack@eecs.umich.edu 150811383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 150911383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 151011383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 151111383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 151211383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 151311383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 151411383Sbrandon.potter@amd.com !length) { 151511383Sbrandon.potter@amd.com return -EINVAL; 151611383Sbrandon.potter@amd.com } 15178324Ssteve.reinhardt@amd.com 151811383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 151911383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 152011383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 152111383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 152211383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 152311383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 152411383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 152511383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 152611383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 152711383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 152811383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 152911383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 153011383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 153111383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 153211383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 153311383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 153411383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 153511383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 153611383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 153711383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 153811383Sbrandon.potter@amd.com // than we currently maintain. 153911383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 154011383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 154111383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 15428324Ssteve.reinhardt@amd.com } 15435877Shsul@eecs.umich.edu 154410486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 154510486Stjablin@gmail.com 154611383Sbrandon.potter@amd.com int sim_fd = -1; 154711383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 154811383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 154911856Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 155011624Smichael.lebeane@amd.com 155111856Sbrandon.potter@amd.com auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>(fdep); 155211856Sbrandon.potter@amd.com if (dfdp) { 155311856Sbrandon.potter@amd.com EmulatedDriver *emul_driver = dfdp->getDriver(); 155411856Sbrandon.potter@amd.com return emul_driver->mmap(p, tc, start, length, prot, 155511624Smichael.lebeane@amd.com tgt_flags, tgt_fd, offset); 155611624Smichael.lebeane@amd.com } 155711624Smichael.lebeane@amd.com 155811856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 155911856Sbrandon.potter@amd.com if (!ffdp) 156011383Sbrandon.potter@amd.com return -EBADF; 156111856Sbrandon.potter@amd.com sim_fd = ffdp->getSimFD(); 1562360SN/A 156311913SBrandon.Potter@amd.com pmap = (decltype(pmap))mmap(nullptr, length, PROT_READ, MAP_PRIVATE, 156411383Sbrandon.potter@amd.com sim_fd, offset); 15658600Ssteve.reinhardt@amd.com 156611383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 156711383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 156811383Sbrandon.potter@amd.com return -errno; 15698600Ssteve.reinhardt@amd.com } 15702544SN/A } 15712544SN/A 157211383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 157311383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 157411383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 157511905SBrandon.Potter@amd.com std::shared_ptr<MemState> mem_state = p->memState; 157611905SBrandon.Potter@amd.com Addr mmap_end = mem_state->getMmapEnd(); 157711905SBrandon.Potter@amd.com 157811905SBrandon.Potter@amd.com start = p->mmapGrowsDown() ? mmap_end - length : mmap_end; 157911905SBrandon.Potter@amd.com mmap_end = p->mmapGrowsDown() ? start : mmap_end + length; 158011905SBrandon.Potter@amd.com 158111905SBrandon.Potter@amd.com mem_state->setMmapEnd(mmap_end); 158211383Sbrandon.potter@amd.com } 158311383Sbrandon.potter@amd.com 158411383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 158511383Sbrandon.potter@amd.com start, start + length - 1); 158611383Sbrandon.potter@amd.com 158711383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 158811383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 158911383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 159011383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 159111383Sbrandon.potter@amd.com if (clobber) { 159211383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 159311383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 159411383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 159511383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 159611383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 15978600Ssteve.reinhardt@amd.com } 15986672Sgblack@eecs.umich.edu } 15998600Ssteve.reinhardt@amd.com 160011383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 160111383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 160211383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 16038601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 16042544SN/A 160511383Sbrandon.potter@amd.com // Transfer content into target address space. 160611383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 160711383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 160811383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 160911383Sbrandon.potter@amd.com // with something like: 161011383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 161111383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 161211383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 161311383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 161411383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 161511383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 161611383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 161711383Sbrandon.potter@amd.com } else { 161811383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 161911383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 162011383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 162111383Sbrandon.potter@amd.com // the host into the target address space. 162211383Sbrandon.potter@amd.com struct stat file_stat; 162311383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 162411383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 162511383Sbrandon.potter@amd.com 162611383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 162711383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 162811383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 162911383Sbrandon.potter@amd.com // on the specified offset into the file. 163011383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 163111383Sbrandon.potter@amd.com length); 163211383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 163311383Sbrandon.potter@amd.com 163411383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 163511383Sbrandon.potter@amd.com munmap(pmap, length); 163611383Sbrandon.potter@amd.com 163711392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 163811392Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 163911392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 164011392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 164111392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 164211392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 164311392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 164411392Sbrandon.potter@amd.com if (interpreter) { 164511392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 164611392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 164711392Sbrandon.potter@amd.com 164811392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 164911392Sbrandon.potter@amd.com 165011392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 165111856Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*p->fds)[tgt_fd]; 165211856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>(fdep); 165311856Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(ffdp->getFileName()); 165411392Sbrandon.potter@amd.com 165511392Sbrandon.potter@amd.com if (lib) { 165611392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 165711392Sbrandon.potter@amd.com lib->textBase(), start); 165811392Sbrandon.potter@amd.com } 165911392Sbrandon.potter@amd.com } 166011392Sbrandon.potter@amd.com } 166111392Sbrandon.potter@amd.com 166211383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 166311383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 166411383Sbrandon.potter@amd.com // execution (hopefully). 166511383Sbrandon.potter@amd.com } 166611383Sbrandon.potter@amd.com 16671458SN/A return start; 1668360SN/A} 1669360SN/A 167011593Santhony.gutierrez@amd.comtemplate <class OS> 167111593Santhony.gutierrez@amd.comSyscallReturn 167211851Sbrandon.potter@amd.compwrite64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 167311593Santhony.gutierrez@amd.com{ 167411593Santhony.gutierrez@amd.com int index = 0; 167511593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 167611593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 167711593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 167811593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 167911593Santhony.gutierrez@amd.com 168011856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 168111856Sbrandon.potter@amd.com if (!ffdp) 168211593Santhony.gutierrez@amd.com return -EBADF; 168311856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 168411593Santhony.gutierrez@amd.com 168511593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 168611593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 168711593Santhony.gutierrez@amd.com 168811594Santhony.gutierrez@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 168911593Santhony.gutierrez@amd.com 169011593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 169111593Santhony.gutierrez@amd.com} 169211593Santhony.gutierrez@amd.com 169311385Sbrandon.potter@amd.com/// Target mmap() handler. 169411385Sbrandon.potter@amd.comtemplate <class OS> 169511385Sbrandon.potter@amd.comSyscallReturn 169611851Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 169711385Sbrandon.potter@amd.com{ 169811385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 169911385Sbrandon.potter@amd.com} 170011385Sbrandon.potter@amd.com 170111385Sbrandon.potter@amd.com/// Target mmap2() handler. 170211385Sbrandon.potter@amd.comtemplate <class OS> 170311385Sbrandon.potter@amd.comSyscallReturn 170411851Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 170511385Sbrandon.potter@amd.com{ 170611385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 170711385Sbrandon.potter@amd.com} 170811385Sbrandon.potter@amd.com 1709378SN/A/// Target getrlimit() handler. 1710360SN/Atemplate <class OS> 17111450SN/ASyscallReturn 171211851Sbrandon.potter@amd.comgetrlimitFunc(SyscallDesc *desc, int callnum, Process *process, 171311851Sbrandon.potter@amd.com ThreadContext *tc) 1714360SN/A{ 17156701Sgblack@eecs.umich.edu int index = 0; 17166701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 17176701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1718360SN/A 1719360SN/A switch (resource) { 172011906SBrandon.Potter@amd.com case OS::TGT_RLIMIT_STACK: 172111906SBrandon.Potter@amd.com // max stack size in bytes: make up a number (8MB for now) 172211906SBrandon.Potter@amd.com rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 172311906SBrandon.Potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 172411906SBrandon.Potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 172511906SBrandon.Potter@amd.com break; 1726360SN/A 172711906SBrandon.Potter@amd.com case OS::TGT_RLIMIT_DATA: 172811906SBrandon.Potter@amd.com // max data segment size in bytes: make up a number 172911906SBrandon.Potter@amd.com rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 173011906SBrandon.Potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 173111906SBrandon.Potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 173211906SBrandon.Potter@amd.com break; 17335877Shsul@eecs.umich.edu 173411906SBrandon.Potter@amd.com default: 173511906SBrandon.Potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 173611906SBrandon.Potter@amd.com return -EINVAL; 173711906SBrandon.Potter@amd.com break; 1738360SN/A } 1739360SN/A 17408706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 17411458SN/A return 0; 1742360SN/A} 1743360SN/A 174412235Sar4jc@virginia.edutemplate <class OS> 174512235Sar4jc@virginia.eduSyscallReturn 174612235Sar4jc@virginia.eduprlimitFunc(SyscallDesc *desc, int callnum, Process *process, 174712235Sar4jc@virginia.edu ThreadContext *tc) 174812235Sar4jc@virginia.edu{ 174912235Sar4jc@virginia.edu int index = 0; 175012235Sar4jc@virginia.edu if (process->getSyscallArg(tc, index) != 0) 175112235Sar4jc@virginia.edu { 175212235Sar4jc@virginia.edu warn("prlimit: ignoring rlimits for nonzero pid"); 175312235Sar4jc@virginia.edu return -EPERM; 175412235Sar4jc@virginia.edu } 175512235Sar4jc@virginia.edu int resource = process->getSyscallArg(tc, index); 175612235Sar4jc@virginia.edu Addr n = process->getSyscallArg(tc, index); 175712235Sar4jc@virginia.edu if (n != 0) 175812235Sar4jc@virginia.edu warn("prlimit: ignoring new rlimit"); 175912235Sar4jc@virginia.edu Addr o = process->getSyscallArg(tc, index); 176012235Sar4jc@virginia.edu if (o != 0) 176112235Sar4jc@virginia.edu { 176212416Sqtt2@cornell.edu TypedBufferArg<typename OS::rlimit> rlp(o); 176312235Sar4jc@virginia.edu switch (resource) { 176412235Sar4jc@virginia.edu case OS::TGT_RLIMIT_STACK: 176512235Sar4jc@virginia.edu // max stack size in bytes: make up a number (8MB for now) 176612235Sar4jc@virginia.edu rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 176712235Sar4jc@virginia.edu rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 176812235Sar4jc@virginia.edu rlp->rlim_max = TheISA::htog(rlp->rlim_max); 176912235Sar4jc@virginia.edu break; 177012235Sar4jc@virginia.edu case OS::TGT_RLIMIT_DATA: 177112235Sar4jc@virginia.edu // max data segment size in bytes: make up a number 177212235Sar4jc@virginia.edu rlp->rlim_cur = rlp->rlim_max = 256*1024*1024; 177312235Sar4jc@virginia.edu rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 177412235Sar4jc@virginia.edu rlp->rlim_max = TheISA::htog(rlp->rlim_max); 177512593Sjason@lowepower.com break; 177612235Sar4jc@virginia.edu default: 177712235Sar4jc@virginia.edu warn("prlimit: unimplemented resource %d", resource); 177812235Sar4jc@virginia.edu return -EINVAL; 177912235Sar4jc@virginia.edu break; 178012235Sar4jc@virginia.edu } 178112235Sar4jc@virginia.edu rlp.copyOut(tc->getMemProxy()); 178212235Sar4jc@virginia.edu } 178312235Sar4jc@virginia.edu return 0; 178412235Sar4jc@virginia.edu} 178512235Sar4jc@virginia.edu 178610796Sbrandon.potter@amd.com/// Target clock_gettime() function. 178710796Sbrandon.potter@amd.comtemplate <class OS> 178810796Sbrandon.potter@amd.comSyscallReturn 178911851Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 179010796Sbrandon.potter@amd.com{ 179110796Sbrandon.potter@amd.com int index = 1; 179210796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 179310796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 179410796Sbrandon.potter@amd.com 179510796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 179610796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 179710796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 179810796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 179910796Sbrandon.potter@amd.com 180010796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 180110796Sbrandon.potter@amd.com 180210796Sbrandon.potter@amd.com return 0; 180310796Sbrandon.potter@amd.com} 180410796Sbrandon.potter@amd.com 180511337SMichael.Lebeane@amd.com/// Target clock_getres() function. 180611337SMichael.Lebeane@amd.comtemplate <class OS> 180711337SMichael.Lebeane@amd.comSyscallReturn 180811851Sbrandon.potter@amd.comclock_getresFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 180911337SMichael.Lebeane@amd.com{ 181011337SMichael.Lebeane@amd.com int index = 1; 181111337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 181211337SMichael.Lebeane@amd.com 181311337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 181411337SMichael.Lebeane@amd.com tp->tv_sec = 0; 181511337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 181611337SMichael.Lebeane@amd.com 181711337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 181811337SMichael.Lebeane@amd.com 181911337SMichael.Lebeane@amd.com return 0; 182011337SMichael.Lebeane@amd.com} 182111337SMichael.Lebeane@amd.com 1822378SN/A/// Target gettimeofday() handler. 1823360SN/Atemplate <class OS> 18241450SN/ASyscallReturn 182511851Sbrandon.potter@amd.comgettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process, 182611851Sbrandon.potter@amd.com ThreadContext *tc) 1827360SN/A{ 18286701Sgblack@eecs.umich.edu int index = 0; 18296701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1830360SN/A 183110796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1832360SN/A tp->tv_sec += seconds_since_epoch; 18336109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 18346109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1835360SN/A 18368706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1837360SN/A 18381458SN/A return 0; 1839360SN/A} 1840360SN/A 1841360SN/A 18421999SN/A/// Target utimes() handler. 18431999SN/Atemplate <class OS> 18441999SN/ASyscallReturn 184511851Sbrandon.potter@amd.comutimesFunc(SyscallDesc *desc, int callnum, Process *process, 18462680Sktlim@umich.edu ThreadContext *tc) 18471999SN/A{ 18481999SN/A std::string path; 18491999SN/A 18506701Sgblack@eecs.umich.edu int index = 0; 18518852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 18526701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 18536701Sgblack@eecs.umich.edu return -EFAULT; 18546701Sgblack@eecs.umich.edu } 18551999SN/A 18566701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 18576701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 18588706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 18591999SN/A 18601999SN/A struct timeval hostTimeval[2]; 186111906SBrandon.Potter@amd.com for (int i = 0; i < 2; ++i) { 18628737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 18638737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 18641999SN/A } 18653669Sbinkertn@umich.edu 18663669Sbinkertn@umich.edu // Adjust path for current working directory 18673669Sbinkertn@umich.edu path = process->fullPath(path); 18683669Sbinkertn@umich.edu 18691999SN/A int result = utimes(path.c_str(), hostTimeval); 18701999SN/A 18711999SN/A if (result < 0) 18721999SN/A return -errno; 18731999SN/A 18741999SN/A return 0; 18751999SN/A} 187611886Sbrandon.potter@amd.com 187711886Sbrandon.potter@amd.comtemplate <class OS> 187811886Sbrandon.potter@amd.comSyscallReturn 187911886Sbrandon.potter@amd.comexecveFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 188011886Sbrandon.potter@amd.com{ 188111886Sbrandon.potter@amd.com desc->setFlags(0); 188211886Sbrandon.potter@amd.com 188311886Sbrandon.potter@amd.com int index = 0; 188411886Sbrandon.potter@amd.com std::string path; 188511886Sbrandon.potter@amd.com SETranslatingPortProxy & mem_proxy = tc->getMemProxy(); 188611886Sbrandon.potter@amd.com if (!mem_proxy.tryReadString(path, p->getSyscallArg(tc, index))) 188711886Sbrandon.potter@amd.com return -EFAULT; 188811886Sbrandon.potter@amd.com 188911886Sbrandon.potter@amd.com if (access(path.c_str(), F_OK) == -1) 189011886Sbrandon.potter@amd.com return -EACCES; 189111886Sbrandon.potter@amd.com 189211886Sbrandon.potter@amd.com auto read_in = [](std::vector<std::string> & vect, 189311886Sbrandon.potter@amd.com SETranslatingPortProxy & mem_proxy, 189411886Sbrandon.potter@amd.com Addr mem_loc) 189511886Sbrandon.potter@amd.com { 189611886Sbrandon.potter@amd.com for (int inc = 0; ; inc++) { 189711886Sbrandon.potter@amd.com BufferArg b((mem_loc + sizeof(Addr) * inc), sizeof(Addr)); 189811886Sbrandon.potter@amd.com b.copyIn(mem_proxy); 189911886Sbrandon.potter@amd.com 190011886Sbrandon.potter@amd.com if (!*(Addr*)b.bufferPtr()) 190111886Sbrandon.potter@amd.com break; 190211886Sbrandon.potter@amd.com 190311886Sbrandon.potter@amd.com vect.push_back(std::string()); 190411886Sbrandon.potter@amd.com mem_proxy.tryReadString(vect[inc], *(Addr*)b.bufferPtr()); 190511886Sbrandon.potter@amd.com } 190611886Sbrandon.potter@amd.com }; 190711886Sbrandon.potter@amd.com 190811886Sbrandon.potter@amd.com /** 190911886Sbrandon.potter@amd.com * Note that ProcessParams is generated by swig and there are no other 191011886Sbrandon.potter@amd.com * examples of how to create anything but this default constructor. The 191111886Sbrandon.potter@amd.com * fields are manually initialized instead of passing parameters to the 191211886Sbrandon.potter@amd.com * constructor. 191311886Sbrandon.potter@amd.com */ 191411886Sbrandon.potter@amd.com ProcessParams *pp = new ProcessParams(); 191511886Sbrandon.potter@amd.com pp->executable = path; 191611886Sbrandon.potter@amd.com Addr argv_mem_loc = p->getSyscallArg(tc, index); 191711886Sbrandon.potter@amd.com read_in(pp->cmd, mem_proxy, argv_mem_loc); 191811886Sbrandon.potter@amd.com Addr envp_mem_loc = p->getSyscallArg(tc, index); 191911886Sbrandon.potter@amd.com read_in(pp->env, mem_proxy, envp_mem_loc); 192011886Sbrandon.potter@amd.com pp->uid = p->uid(); 192111886Sbrandon.potter@amd.com pp->egid = p->egid(); 192211886Sbrandon.potter@amd.com pp->euid = p->euid(); 192311886Sbrandon.potter@amd.com pp->gid = p->gid(); 192411886Sbrandon.potter@amd.com pp->ppid = p->ppid(); 192511886Sbrandon.potter@amd.com pp->pid = p->pid(); 192611886Sbrandon.potter@amd.com pp->input.assign("cin"); 192711886Sbrandon.potter@amd.com pp->output.assign("cout"); 192811886Sbrandon.potter@amd.com pp->errout.assign("cerr"); 192911886Sbrandon.potter@amd.com pp->cwd.assign(p->getcwd()); 193011886Sbrandon.potter@amd.com pp->system = p->system; 193111886Sbrandon.potter@amd.com /** 193211886Sbrandon.potter@amd.com * Prevent process object creation with identical PIDs (which will trip 193311886Sbrandon.potter@amd.com * a fatal check in Process constructor). The execve call is supposed to 193411886Sbrandon.potter@amd.com * take over the currently executing process' identity but replace 193511886Sbrandon.potter@amd.com * whatever it is doing with a new process image. Instead of hijacking 193611886Sbrandon.potter@amd.com * the process object in the simulator, we create a new process object 193711886Sbrandon.potter@amd.com * and bind to the previous process' thread below (hijacking the thread). 193811886Sbrandon.potter@amd.com */ 193911886Sbrandon.potter@amd.com p->system->PIDs.erase(p->pid()); 194011886Sbrandon.potter@amd.com Process *new_p = pp->create(); 194111886Sbrandon.potter@amd.com delete pp; 194211886Sbrandon.potter@amd.com 194311886Sbrandon.potter@amd.com /** 194411886Sbrandon.potter@amd.com * Work through the file descriptor array and close any files marked 194511886Sbrandon.potter@amd.com * close-on-exec. 194611886Sbrandon.potter@amd.com */ 194711886Sbrandon.potter@amd.com new_p->fds = p->fds; 194811886Sbrandon.potter@amd.com for (int i = 0; i < new_p->fds->getSize(); i++) { 194911886Sbrandon.potter@amd.com std::shared_ptr<FDEntry> fdep = (*new_p->fds)[i]; 195011886Sbrandon.potter@amd.com if (fdep && fdep->getCOE()) 195111886Sbrandon.potter@amd.com new_p->fds->closeFDEntry(i); 195211886Sbrandon.potter@amd.com } 195311886Sbrandon.potter@amd.com 195411886Sbrandon.potter@amd.com *new_p->sigchld = true; 195511886Sbrandon.potter@amd.com 195611886Sbrandon.potter@amd.com delete p; 195711886Sbrandon.potter@amd.com tc->clearArchRegs(); 195811886Sbrandon.potter@amd.com tc->setProcessPtr(new_p); 195911886Sbrandon.potter@amd.com new_p->assignThreadContext(tc->contextId()); 196011886Sbrandon.potter@amd.com new_p->initState(); 196111886Sbrandon.potter@amd.com tc->activate(); 196211886Sbrandon.potter@amd.com TheISA::PCState pcState = tc->pcState(); 196311886Sbrandon.potter@amd.com tc->setNPC(pcState.instAddr()); 196411886Sbrandon.potter@amd.com 196511886Sbrandon.potter@amd.com desc->setFlags(SyscallDesc::SuppressReturnValue); 196611886Sbrandon.potter@amd.com return 0; 196711886Sbrandon.potter@amd.com} 196811886Sbrandon.potter@amd.com 1969378SN/A/// Target getrusage() function. 1970360SN/Atemplate <class OS> 19711450SN/ASyscallReturn 197211851Sbrandon.potter@amd.comgetrusageFunc(SyscallDesc *desc, int callnum, Process *process, 19732680Sktlim@umich.edu ThreadContext *tc) 1974360SN/A{ 19756701Sgblack@eecs.umich.edu int index = 0; 19766701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 19776701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1978360SN/A 19793670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 19803670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1981360SN/A rup->ru_stime.tv_sec = 0; 1982360SN/A rup->ru_stime.tv_usec = 0; 1983360SN/A rup->ru_maxrss = 0; 1984360SN/A rup->ru_ixrss = 0; 1985360SN/A rup->ru_idrss = 0; 1986360SN/A rup->ru_isrss = 0; 1987360SN/A rup->ru_minflt = 0; 1988360SN/A rup->ru_majflt = 0; 1989360SN/A rup->ru_nswap = 0; 1990360SN/A rup->ru_inblock = 0; 1991360SN/A rup->ru_oublock = 0; 1992360SN/A rup->ru_msgsnd = 0; 1993360SN/A rup->ru_msgrcv = 0; 1994360SN/A rup->ru_nsignals = 0; 1995360SN/A rup->ru_nvcsw = 0; 1996360SN/A rup->ru_nivcsw = 0; 1997360SN/A 19983670Sbinkertn@umich.edu switch (who) { 19993670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 200010796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 20018737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 20028737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 20033670Sbinkertn@umich.edu break; 20043670Sbinkertn@umich.edu 20053670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 20063670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 20073670Sbinkertn@umich.edu break; 20083670Sbinkertn@umich.edu 20093670Sbinkertn@umich.edu default: 20103670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 20113670Sbinkertn@umich.edu // plow ahead 20123670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 20133670Sbinkertn@umich.edu who); 20143670Sbinkertn@umich.edu } 20153670Sbinkertn@umich.edu 20168706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 2017360SN/A 20181458SN/A return 0; 2019360SN/A} 2020360SN/A 20216683Stjones1@inf.ed.ac.uk/// Target times() function. 20226683Stjones1@inf.ed.ac.uktemplate <class OS> 20236683Stjones1@inf.ed.ac.ukSyscallReturn 202411851Sbrandon.potter@amd.comtimesFunc(SyscallDesc *desc, int callnum, Process *process, 202511851Sbrandon.potter@amd.com ThreadContext *tc) 20266683Stjones1@inf.ed.ac.uk{ 20276701Sgblack@eecs.umich.edu int index = 0; 20286701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 20296683Stjones1@inf.ed.ac.uk 20306683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 20317823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 20326683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 20336683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 20346683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 20356683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 20366683Stjones1@inf.ed.ac.uk 20376683Stjones1@inf.ed.ac.uk // Convert to host endianness 20388737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 20396683Stjones1@inf.ed.ac.uk 20406683Stjones1@inf.ed.ac.uk // Write back 20418706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 20426683Stjones1@inf.ed.ac.uk 20436683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 20446683Stjones1@inf.ed.ac.uk return clocks; 20456683Stjones1@inf.ed.ac.uk} 20462553SN/A 20476684Stjones1@inf.ed.ac.uk/// Target time() function. 20486684Stjones1@inf.ed.ac.uktemplate <class OS> 20496684Stjones1@inf.ed.ac.ukSyscallReturn 205011851Sbrandon.potter@amd.comtimeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 20516684Stjones1@inf.ed.ac.uk{ 20526684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 205310796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 20546684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 20556684Stjones1@inf.ed.ac.uk 20566701Sgblack@eecs.umich.edu int index = 0; 20576701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 205811321Ssteve.reinhardt@amd.com if (taddr != 0) { 20596684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 20608737Skoansin.tan@gmail.com t = TheISA::htog(t); 20618852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 20628852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 20636684Stjones1@inf.ed.ac.uk } 20646684Stjones1@inf.ed.ac.uk return sec; 20656684Stjones1@inf.ed.ac.uk} 20662553SN/A 206711910SBrandon.Potter@amd.comtemplate <class OS> 206811910SBrandon.Potter@amd.comSyscallReturn 206911910SBrandon.Potter@amd.comtgkillFunc(SyscallDesc *desc, int num, Process *process, ThreadContext *tc) 207011910SBrandon.Potter@amd.com{ 207111910SBrandon.Potter@amd.com int index = 0; 207211910SBrandon.Potter@amd.com int tgid = process->getSyscallArg(tc, index); 207311910SBrandon.Potter@amd.com int tid = process->getSyscallArg(tc, index); 207411910SBrandon.Potter@amd.com int sig = process->getSyscallArg(tc, index); 207511910SBrandon.Potter@amd.com 207611910SBrandon.Potter@amd.com /** 207711910SBrandon.Potter@amd.com * This system call is intended to allow killing a specific thread 207811910SBrandon.Potter@amd.com * within an arbitrary thread group if sanctioned with permission checks. 207911910SBrandon.Potter@amd.com * It's usually true that threads share the termination signal as pointed 208011910SBrandon.Potter@amd.com * out by the pthread_kill man page and this seems to be the intended 208111910SBrandon.Potter@amd.com * usage. Due to this being an emulated environment, assume the following: 208211910SBrandon.Potter@amd.com * Threads are allowed to call tgkill because the EUID for all threads 208311910SBrandon.Potter@amd.com * should be the same. There is no signal handling mechanism for kernel 208411910SBrandon.Potter@amd.com * registration of signal handlers since signals are poorly supported in 208511910SBrandon.Potter@amd.com * emulation mode. Since signal handlers cannot be registered, all 208611910SBrandon.Potter@amd.com * threads within in a thread group must share the termination signal. 208711910SBrandon.Potter@amd.com * We never exhaust PIDs so there's no chance of finding the wrong one 208811910SBrandon.Potter@amd.com * due to PID rollover. 208911910SBrandon.Potter@amd.com */ 209011910SBrandon.Potter@amd.com 209111910SBrandon.Potter@amd.com System *sys = tc->getSystemPtr(); 209211910SBrandon.Potter@amd.com Process *tgt_proc = nullptr; 209311910SBrandon.Potter@amd.com for (int i = 0; i < sys->numContexts(); i++) { 209411910SBrandon.Potter@amd.com Process *temp = sys->threadContexts[i]->getProcessPtr(); 209511910SBrandon.Potter@amd.com if (temp->pid() == tid) { 209611910SBrandon.Potter@amd.com tgt_proc = temp; 209711910SBrandon.Potter@amd.com break; 209811910SBrandon.Potter@amd.com } 209911910SBrandon.Potter@amd.com } 210011910SBrandon.Potter@amd.com 210111910SBrandon.Potter@amd.com if (sig != 0 || sig != OS::TGT_SIGABRT) 210211910SBrandon.Potter@amd.com return -EINVAL; 210311910SBrandon.Potter@amd.com 210411910SBrandon.Potter@amd.com if (tgt_proc == nullptr) 210511910SBrandon.Potter@amd.com return -ESRCH; 210611910SBrandon.Potter@amd.com 210711910SBrandon.Potter@amd.com if (tgid != -1 && tgt_proc->tgid() != tgid) 210811910SBrandon.Potter@amd.com return -ESRCH; 210911910SBrandon.Potter@amd.com 211011910SBrandon.Potter@amd.com if (sig == OS::TGT_SIGABRT) 211111910SBrandon.Potter@amd.com exitGroupFunc(desc, 252, process, tc); 211211910SBrandon.Potter@amd.com 211311910SBrandon.Potter@amd.com return 0; 211411910SBrandon.Potter@amd.com} 211511910SBrandon.Potter@amd.com 211613568Sbrandon.potter@amd.comtemplate <class OS> 211713568Sbrandon.potter@amd.comSyscallReturn 211813568Sbrandon.potter@amd.comsocketFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 211913568Sbrandon.potter@amd.com{ 212013568Sbrandon.potter@amd.com int index = 0; 212113568Sbrandon.potter@amd.com int domain = p->getSyscallArg(tc, index); 212213568Sbrandon.potter@amd.com int type = p->getSyscallArg(tc, index); 212313568Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 212413568Sbrandon.potter@amd.com 212513568Sbrandon.potter@amd.com int sim_fd = socket(domain, type, prot); 212613568Sbrandon.potter@amd.com if (sim_fd == -1) 212713568Sbrandon.potter@amd.com return -errno; 212813568Sbrandon.potter@amd.com 212913568Sbrandon.potter@amd.com auto sfdp = std::make_shared<SocketFDEntry>(sim_fd, domain, type, prot); 213013568Sbrandon.potter@amd.com int tgt_fd = p->fds->allocFD(sfdp); 213113568Sbrandon.potter@amd.com 213213568Sbrandon.potter@amd.com return tgt_fd; 213313568Sbrandon.potter@amd.com} 213413568Sbrandon.potter@amd.com 213513568Sbrandon.potter@amd.comtemplate <class OS> 213613568Sbrandon.potter@amd.comSyscallReturn 213713568Sbrandon.potter@amd.comsocketpairFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 213813568Sbrandon.potter@amd.com{ 213913568Sbrandon.potter@amd.com int index = 0; 214013568Sbrandon.potter@amd.com int domain = p->getSyscallArg(tc, index); 214113568Sbrandon.potter@amd.com int type = p->getSyscallArg(tc, index); 214213568Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 214313568Sbrandon.potter@amd.com Addr svPtr = p->getSyscallArg(tc, index); 214413568Sbrandon.potter@amd.com 214513568Sbrandon.potter@amd.com BufferArg svBuf((Addr)svPtr, 2 * sizeof(int)); 214613568Sbrandon.potter@amd.com int status = socketpair(domain, type, prot, (int *)svBuf.bufferPtr()); 214713568Sbrandon.potter@amd.com if (status == -1) 214813568Sbrandon.potter@amd.com return -errno; 214913568Sbrandon.potter@amd.com 215013568Sbrandon.potter@amd.com int *fds = (int *)svBuf.bufferPtr(); 215113568Sbrandon.potter@amd.com 215213568Sbrandon.potter@amd.com auto sfdp1 = std::make_shared<SocketFDEntry>(fds[0], domain, type, prot); 215313568Sbrandon.potter@amd.com fds[0] = p->fds->allocFD(sfdp1); 215413568Sbrandon.potter@amd.com auto sfdp2 = std::make_shared<SocketFDEntry>(fds[1], domain, type, prot); 215513568Sbrandon.potter@amd.com fds[1] = p->fds->allocFD(sfdp2); 215613568Sbrandon.potter@amd.com svBuf.copyOut(tc->getMemProxy()); 215713568Sbrandon.potter@amd.com 215813568Sbrandon.potter@amd.com return status; 215913568Sbrandon.potter@amd.com} 21602553SN/A 21611354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 2162