syscall_emul.hh revision 11594
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 4812018Sandreas.sandberg@arm.com#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 4912018Sandreas.sandberg@arm.com defined(__FreeBSD__) || defined(__CYGWIN__) || \ 5012018Sandreas.sandberg@arm.com defined(__NetBSD__)) 5112018Sandreas.sandberg@arm.com 5212018Sandreas.sandberg@arm.com/// 5312018Sandreas.sandberg@arm.com/// @file syscall_emul.hh 5412018Sandreas.sandberg@arm.com/// 552064SN/A/// This file defines objects used to emulate syscalls from the target 5612018Sandreas.sandberg@arm.com/// application on the host machine. 5712018Sandreas.sandberg@arm.com 5812018Sandreas.sandberg@arm.com#ifdef __CYGWIN32__ 5912018Sandreas.sandberg@arm.com#include <sys/fcntl.h> // for O_BINARY 6012018Sandreas.sandberg@arm.com 6112018Sandreas.sandberg@arm.com#endif 6211799Sbrandon.potter@amd.com#include <fcntl.h> 6312018Sandreas.sandberg@arm.com#include <sys/mman.h> 6412018Sandreas.sandberg@arm.com#include <sys/stat.h> 6512018Sandreas.sandberg@arm.com#include <sys/time.h> 6612018Sandreas.sandberg@arm.com#include <sys/uio.h> 6712018Sandreas.sandberg@arm.com#include <unistd.h> 6812018Sandreas.sandberg@arm.com 6911799Sbrandon.potter@amd.com#include <cerrno> 70360SN/A#include <string> 71360SN/A 72360SN/A#include "base/chunk_generator.hh" 73360SN/A#include "base/intmath.hh" // for RoundUp 74360SN/A#include "base/loader/object_file.hh" 75360SN/A#include "base/misc.hh" 761809SN/A#include "base/trace.hh" 7711800Sbrandon.potter@amd.com#include "base/types.hh" 7811392Sbrandon.potter@amd.com#include "config/the_isa.hh" 791809SN/A#include "cpu/base.hh" 8011392Sbrandon.potter@amd.com#include "cpu/thread_context.hh" 8111383Sbrandon.potter@amd.com#include "debug/SyscallBase.hh" 823113Sgblack@eecs.umich.edu#include "debug/SyscallVerbose.hh" 8311799Sbrandon.potter@amd.com#include "mem/page_table.hh" 8411759Sbrandon.potter@amd.com#include "sim/byteswap.hh" 8511812Sbaz21@cam.ac.uk#include "sim/emul_driver.hh" 8611812Sbaz21@cam.ac.uk#include "sim/process.hh" 8711799Sbrandon.potter@amd.com#include "sim/syscall_emul_buf.hh" 888229Snate@binkert.org#include "sim/syscallreturn.hh" 898229Snate@binkert.org#include "sim/system.hh" 9011594Santhony.gutierrez@amd.com 917075Snate@binkert.org// This wrapper macro helps out with readability a bit. FLAGEXT specifies 928229Snate@binkert.org// the verbosity and FMT is the message to be appended to the syscall 9311856Sbrandon.potter@amd.com// header information. The syscall header information contains the cpuid 947075Snate@binkert.org// and thread id. 95360SN/A#define DPRINTF_SYSCALL(FLAGEXT, FMT, ...) \ 9611886Sbrandon.potter@amd.com DPRINTFS(Syscall##FLAGEXT, tc->getCpuPtr(), "T%d : syscall " FMT, \ 9711800Sbrandon.potter@amd.com tc->threadId(), __VA_ARGS__) 9811392Sbrandon.potter@amd.com 992462SN/A/// 1001354SN/A/// System call descriptor. 1016216Snate@binkert.org/// 1026658Snate@binkert.orgclass SyscallDesc { 1032474SN/A 1042680Sktlim@umich.edu public: 1058229Snate@binkert.org 10611886Sbrandon.potter@amd.com /// Typedef for target syscall handler functions. 10710496Ssteve.reinhardt@amd.com typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 10811911SBrandon.Potter@amd.com LiveProcess *, ThreadContext *); 1098229Snate@binkert.org 11011794Sbrandon.potter@amd.com const char *name; //!< Syscall name (e.g., "open"). 11111886Sbrandon.potter@amd.com FuncPtr funcPtr; //!< Pointer to emulation function. 11210497Ssteve.reinhardt@amd.com int flags; //!< Flags (see Flags enum). 11311794Sbrandon.potter@amd.com bool warned; //!< Have we warned about unimplemented syscall? 114360SN/A 115360SN/A /// Flag values for controlling syscall behavior. 116360SN/A enum Flags { 117360SN/A /// Don't set return regs according to funcPtr return value. 118360SN/A /// Used for syscalls with non-standard return conventions 119360SN/A /// that explicitly set the ThreadContext regs (e.g., 120360SN/A /// sigreturn). 121360SN/A SuppressReturnValue = 1, 122360SN/A WarnOnce = 2 123360SN/A }; 124378SN/A 1251706SN/A /// Constructor. 12611851Sbrandon.potter@amd.com SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 127378SN/A : name(_name), funcPtr(_funcPtr), flags(_flags), warned(false) 128378SN/A { 129378SN/A } 130378SN/A 131378SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1321706SN/A void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 13311851Sbrandon.potter@amd.com 134360SN/A /// Is the WarnOnce flag set? 13511760Sbrandon.potter@amd.com bool warnOnce() const { return (flags & WarnOnce); } 13611760Sbrandon.potter@amd.com}; 13711851Sbrandon.potter@amd.com 13811760Sbrandon.potter@amd.com 1396109Ssanchezd@stanford.edu////////////////////////////////////////////////////////////////////// 1401706SN/A// 14111851Sbrandon.potter@amd.com// The following emulation functions are generic enough that they 142378SN/A// don't need to be recompiled for different emulated OS's. They are 1436109Ssanchezd@stanford.edu// defined in sim/syscall_emul.cc. 1446109Ssanchezd@stanford.edu// 14511851Sbrandon.potter@amd.com////////////////////////////////////////////////////////////////////// 1466109Ssanchezd@stanford.edu 14711886Sbrandon.potter@amd.com 14811886Sbrandon.potter@amd.com/// Handler for unimplemented syscalls that we haven't thought about. 14911886Sbrandon.potter@amd.comSyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 15011886Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 151378SN/A 1521706SN/A/// Handler for unimplemented syscalls that we never intend to 15311851Sbrandon.potter@amd.com/// implement (signal handling, etc.) and should not affect the correct 154378SN/A/// behavior of the program. Print a warning only if the appropriate 1555748SSteve.Reinhardt@amd.com/// trace flag is enabled. Return success to the target program. 1565748SSteve.Reinhardt@amd.comSyscallReturn ignoreFunc(SyscallDesc *desc, int num, 15711851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 158378SN/A 159378SN/A/// Target exit() handler: terminate current context. 1601706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 16111851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 162378SN/A 16311886Sbrandon.potter@amd.com/// Target exit_group() handler: terminate simulation. (exit all threads) 1641706SN/ASyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 16511851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 166378SN/A 167378SN/A/// Target getpagesize() handler. 1681706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 16911851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 170378SN/A 171378SN/A/// Target brk() handler: set brk address. 1721706SN/ASyscallReturn brkFunc(SyscallDesc *desc, int num, 17311851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 174378SN/A 1754118Sgblack@eecs.umich.edu/// Target close() handler. 1764118Sgblack@eecs.umich.eduSyscallReturn closeFunc(SyscallDesc *desc, int num, 17711851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 1784118Sgblack@eecs.umich.edu 179378SN/A/// Target read() handler. 1801706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 18111851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 182378SN/A 183378SN/A/// Target write() handler. 1841706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 18511851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 186360SN/A 1875513SMichael.Adler@intel.com/// Target lseek() handler. 1885513SMichael.Adler@intel.comSyscallReturn lseekFunc(SyscallDesc *desc, int num, 18911851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 1905513SMichael.Adler@intel.com 19110203SAli.Saidi@ARM.com/// Target _llseek() handler. 19210203SAli.Saidi@ARM.comSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 19311851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 19410203SAli.Saidi@ARM.com 1955513SMichael.Adler@intel.com/// Target munmap() handler. 19611851Sbrandon.potter@amd.comSyscallReturn munmapFunc(SyscallDesc *desc, int num, 1975513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 198511SN/A 19910633Smichaelupton@gmail.com/// Target gethostname() handler. 20011851Sbrandon.potter@amd.comSyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 20110633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc); 2021706SN/A 20311851Sbrandon.potter@amd.com/// Target getcwd() handler. 204511SN/ASyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2055513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2065513SMichael.Adler@intel.com 20711851Sbrandon.potter@amd.com/// Target readlink() handler. 2085513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 209511SN/A LiveProcess *p, ThreadContext *tc, 2101706SN/A int index = 0); 21111851Sbrandon.potter@amd.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2121706SN/A LiveProcess *p, ThreadContext *tc); 2131706SN/A 2141706SN/A/// Target unlink() handler. 2151706SN/ASyscallReturn unlinkHelper(SyscallDesc *desc, int num, 21611851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc, 2171706SN/A int index); 2181706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2191706SN/A LiveProcess *p, ThreadContext *tc); 2201706SN/A 22111851Sbrandon.potter@amd.com/// Target mkdir() handler. 2221706SN/ASyscallReturn mkdirFunc(SyscallDesc *desc, int num, 223511SN/A LiveProcess *p, ThreadContext *tc); 2246703Svince@csl.cornell.edu 2256703Svince@csl.cornell.edu/// Target rename() handler. 22611851Sbrandon.potter@amd.comSyscallReturn renameFunc(SyscallDesc *desc, int num, 2276703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2286685Stjones1@inf.ed.ac.uk 2296685Stjones1@inf.ed.ac.uk 23011851Sbrandon.potter@amd.com/// Target truncate() handler. 2316685Stjones1@inf.ed.ac.ukSyscallReturn truncateFunc(SyscallDesc *desc, int num, 2326685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2335513SMichael.Adler@intel.com 2345513SMichael.Adler@intel.com 23511851Sbrandon.potter@amd.com/// Target ftruncate() handler. 2365513SMichael.Adler@intel.comSyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 23711885Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 23811885Sbrandon.potter@amd.com 23911885Sbrandon.potter@amd.com 2405513SMichael.Adler@intel.com/// Target truncate64() handler. 2411999SN/ASyscallReturn truncate64Func(SyscallDesc *desc, int num, 2421999SN/A LiveProcess *p, ThreadContext *tc); 24311851Sbrandon.potter@amd.com 2441999SN/A/// Target ftruncate64() handler. 24511885Sbrandon.potter@amd.comSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 24611885Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 24711885Sbrandon.potter@amd.com 2481999SN/A 2491999SN/A/// Target umask() handler. 2501999SN/ASyscallReturn umaskFunc(SyscallDesc *desc, int num, 25111851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2521999SN/A 2533079Sstever@eecs.umich.edu 2543079Sstever@eecs.umich.edu/// Target chown() handler. 25511851Sbrandon.potter@amd.comSyscallReturn chownFunc(SyscallDesc *desc, int num, 2563079Sstever@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 25711908SBrandon.Potter@amd.com 25811908SBrandon.Potter@amd.com 25911908SBrandon.Potter@amd.com/// Target fchown() handler. 26011908SBrandon.Potter@amd.comSyscallReturn fchownFunc(SyscallDesc *desc, int num, 26111875Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2622093SN/A 26311851Sbrandon.potter@amd.com/// Target dup() handler. 2642093SN/ASyscallReturn dupFunc(SyscallDesc *desc, int num, 2652687Sksewell@umich.edu LiveProcess *process, ThreadContext *tc); 2662687Sksewell@umich.edu 26711851Sbrandon.potter@amd.com/// Target fnctl() handler. 2682687Sksewell@umich.eduSyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2692238SN/A LiveProcess *process, ThreadContext *tc); 2702238SN/A 27111851Sbrandon.potter@amd.com/// Target fcntl64() handler. 2722238SN/ASyscallReturn fcntl64Func(SyscallDesc *desc, int num, 27311908SBrandon.Potter@amd.com LiveProcess *process, ThreadContext *tc); 27411908SBrandon.Potter@amd.com 27511908SBrandon.Potter@amd.com/// Target setuid() handler. 27611908SBrandon.Potter@amd.comSyscallReturn setuidFunc(SyscallDesc *desc, int num, 27711908SBrandon.Potter@amd.com LiveProcess *p, ThreadContext *tc); 27811908SBrandon.Potter@amd.com 27911908SBrandon.Potter@amd.com/// Target getpid() handler. 28011908SBrandon.Potter@amd.comSyscallReturn getpidFunc(SyscallDesc *desc, int num, 2812238SN/A LiveProcess *p, ThreadContext *tc); 2822238SN/A 28311851Sbrandon.potter@amd.com/// Target getuid() handler. 2842238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2852238SN/A LiveProcess *p, ThreadContext *tc); 2862238SN/A 28711851Sbrandon.potter@amd.com/// Target getgid() handler. 2882238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2892238SN/A LiveProcess *p, ThreadContext *tc); 2902238SN/A 29111851Sbrandon.potter@amd.com/// Target getppid() handler. 2922238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2932238SN/A LiveProcess *p, ThreadContext *tc); 2942238SN/A 29511851Sbrandon.potter@amd.com/// Target geteuid() handler. 2962238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2972238SN/A LiveProcess *p, ThreadContext *tc); 2982238SN/A 29911851Sbrandon.potter@amd.com/// Target getegid() handler. 3002238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3012238SN/A LiveProcess *p, ThreadContext *tc); 3022238SN/A 30311851Sbrandon.potter@amd.com/// Target clone() handler. 3042238SN/ASyscallReturn cloneFunc(SyscallDesc *desc, int num, 3059455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 3069455Smitch.hayenga+gem5@gmail.com 30711851Sbrandon.potter@amd.com/// Target access() handler 30810203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 30911851Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 31011851Sbrandon.potter@amd.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3119455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc, 3129112Smarc.orr@gmail.com int index); 31311906SBrandon.Potter@amd.com 31411906SBrandon.Potter@amd.com/// Futex system call 3159112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3169112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 31711851Sbrandon.potter@amd.comtemplate <class OS> 3189112Smarc.orr@gmail.comSyscallReturn 3199112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 32011911SBrandon.Potter@amd.com ThreadContext *tc) 3219112Smarc.orr@gmail.com{ 32211911SBrandon.Potter@amd.com int index_uaddr = 0; 32311911SBrandon.Potter@amd.com int index_op = 1; 32411911SBrandon.Potter@amd.com int index_val = 2; 32511911SBrandon.Potter@amd.com int index_timeout = 3; 3269112Smarc.orr@gmail.com 32711911SBrandon.Potter@amd.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 32811911SBrandon.Potter@amd.com int op = process->getSyscallArg(tc, index_op); 32911911SBrandon.Potter@amd.com int val = process->getSyscallArg(tc, index_val); 33011911SBrandon.Potter@amd.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3319238Slluc.alvarez@bsc.es 3329112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 33311911SBrandon.Potter@amd.com &futex_map = tc->getSystemPtr()->futexMap; 3349112Smarc.orr@gmail.com 33511911SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 33611911SBrandon.Potter@amd.com uaddr, op, val); 33711911SBrandon.Potter@amd.com 33811911SBrandon.Potter@amd.com op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 33911911SBrandon.Potter@amd.com 3409112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 34111911SBrandon.Potter@amd.com if (timeout != 0) { 34211911SBrandon.Potter@amd.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 34311911SBrandon.Potter@amd.com "we'll wait indefinitely"); 34411911SBrandon.Potter@amd.com } 34511911SBrandon.Potter@amd.com 34611911SBrandon.Potter@amd.com uint8_t *buf = new uint8_t[sizeof(int)]; 3479112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3489112Smarc.orr@gmail.com int mem_val = *((int *)buf); 34911911SBrandon.Potter@amd.com delete[] buf; 35011911SBrandon.Potter@amd.com 3519112Smarc.orr@gmail.com if (val != mem_val) { 35211911SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 35311911SBrandon.Potter@amd.com "expected: %d\n", mem_val, val); 3549112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3559112Smarc.orr@gmail.com } 35611911SBrandon.Potter@amd.com 35711911SBrandon.Potter@amd.com // Queue the thread context 3589112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3599112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3602238SN/A tcWaitList = futex_map.find(uaddr)->second; 3612238SN/A } else { 3622238SN/A tcWaitList = new std::list<ThreadContext *>(); 3632238SN/A futex_map.insert(std::pair< uint64_t, 36411851Sbrandon.potter@amd.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3652238SN/A } 3662238SN/A tcWaitList->push_back(tc); 3672238SN/A DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 36811851Sbrandon.potter@amd.com "thread context\n"); 3692238SN/A tc->suspend(); 3702238SN/A return 0; 3712238SN/A } else if (op == OS::TGT_FUTEX_WAKE){ 37211851Sbrandon.potter@amd.com int wokenUp = 0; 3732238SN/A std::list<ThreadContext *> * tcWaitList; 3742238SN/A if (futex_map.count(uaddr)) { 3752238SN/A tcWaitList = futex_map.find(uaddr)->second; 37611851Sbrandon.potter@amd.com while (tcWaitList->size() > 0 && wokenUp < val) { 3772238SN/A tcWaitList->front()->activate(); 3782238SN/A tcWaitList->pop_front(); 3791354SN/A wokenUp++; 3801354SN/A } 38110796Sbrandon.potter@amd.com if (tcWaitList->empty()) { 38210796Sbrandon.potter@amd.com futex_map.erase(uaddr); 3831354SN/A delete tcWaitList; 3841354SN/A } 3851354SN/A } 3861354SN/A DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3871354SN/A "thread contexts\n", wokenUp); 3881354SN/A return wokenUp; 3891354SN/A } else { 3901354SN/A warn("sys_futex: op %d is not implemented, just returning...", op); 3911354SN/A return 0; 3921354SN/A } 39310796Sbrandon.potter@amd.com 3941354SN/A} 39510796Sbrandon.potter@amd.com 3961354SN/A 3971354SN/A/// Pseudo Funcs - These functions use a different return convension, 3981354SN/A/// returning a second value in a register other than the normal return register 3991354SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 40010796Sbrandon.potter@amd.com LiveProcess *process, ThreadContext *tc); 40110796Sbrandon.potter@amd.com 40210796Sbrandon.potter@amd.com/// Target getpidPseudo() handler. 40310796Sbrandon.potter@amd.comSyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 40410796Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 40510796Sbrandon.potter@amd.com 40610796Sbrandon.potter@amd.com/// Target getuidPseudo() handler. 40710796Sbrandon.potter@amd.comSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 40810796Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 40910796Sbrandon.potter@amd.com 41010796Sbrandon.potter@amd.com/// Target getgidPseudo() handler. 411360SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 412360SN/A LiveProcess *p, ThreadContext *tc); 413360SN/A 414360SN/A 415360SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 416360SN/Aconst int one_million = 1000000; 417360SN/A/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 41811759Sbrandon.potter@amd.comconst int one_billion = 1000000000; 4193113Sgblack@eecs.umich.edu 4203113Sgblack@eecs.umich.edu/// Approximate seconds since the epoch (1/1/1970). About a billion, 4213113Sgblack@eecs.umich.edu/// by my reckoning. We want to keep this a constant (not use the 4223113Sgblack@eecs.umich.edu/// real-world time) to keep simulations repeatable. 4233113Sgblack@eecs.umich.educonst unsigned seconds_since_epoch = 1000000000; 4243113Sgblack@eecs.umich.edu 4253113Sgblack@eecs.umich.edu/// Helper function to convert current elapsed time to seconds and 4263113Sgblack@eecs.umich.edu/// microseconds. 4273113Sgblack@eecs.umich.edutemplate <class T1, class T2> 4283113Sgblack@eecs.umich.eduvoid 4293113Sgblack@eecs.umich.edugetElapsedTimeMicro(T1 &sec, T2 &usec) 4303113Sgblack@eecs.umich.edu{ 4313113Sgblack@eecs.umich.edu uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 43212032Sandreas.sandberg@arm.com sec = elapsed_usecs / one_million; 4333113Sgblack@eecs.umich.edu usec = elapsed_usecs % one_million; 4343113Sgblack@eecs.umich.edu} 4354189Sgblack@eecs.umich.edu 4364189Sgblack@eecs.umich.edu/// Helper function to convert current elapsed time to seconds and 4373113Sgblack@eecs.umich.edu/// nanoseconds. 4383113Sgblack@eecs.umich.edutemplate <class T1, class T2> 4393113Sgblack@eecs.umich.eduvoid 4403113Sgblack@eecs.umich.edugetElapsedTimeNano(T1 &sec, T2 &nsec) 4418737Skoansin.tan@gmail.com{ 4423113Sgblack@eecs.umich.edu uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 4438737Skoansin.tan@gmail.com sec = elapsed_nsecs / one_billion; 4443277Sgblack@eecs.umich.edu nsec = elapsed_nsecs % one_billion; 4455515SMichael.Adler@intel.com} 4465515SMichael.Adler@intel.com 4475515SMichael.Adler@intel.com////////////////////////////////////////////////////////////////////// 4485515SMichael.Adler@intel.com// 4495515SMichael.Adler@intel.com// The following emulation functions are generic, but need to be 4508737Skoansin.tan@gmail.com// templated to account for differences in types, constants, etc. 4513277Sgblack@eecs.umich.edu// 4528737Skoansin.tan@gmail.com////////////////////////////////////////////////////////////////////// 4533277Sgblack@eecs.umich.edu 4548737Skoansin.tan@gmail.com#if NO_STAT64 4553277Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4568737Skoansin.tan@gmail.com typedef struct stat hst_stat64; 4573113Sgblack@eecs.umich.edu#else 4583113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4593113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4603113Sgblack@eecs.umich.edu#endif 4618737Skoansin.tan@gmail.com 4623113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4638737Skoansin.tan@gmail.com//// buffer. Also copies the target buffer out to the simulated 4643114Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4658737Skoansin.tan@gmail.com 4663114Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4678737Skoansin.tan@gmail.comstatic void 4683114Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4698737Skoansin.tan@gmail.com{ 47011906SBrandon.Potter@amd.com using namespace TheISA; 4714061Sgblack@eecs.umich.edu 4724061Sgblack@eecs.umich.edu if (fakeTTY) 4738737Skoansin.tan@gmail.com tgt->st_dev = 0xA; 4743113Sgblack@eecs.umich.edu else 4758737Skoansin.tan@gmail.com tgt->st_dev = host->st_dev; 4763113Sgblack@eecs.umich.edu tgt->st_dev = TheISA::htog(tgt->st_dev); 4773113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4783113Sgblack@eecs.umich.edu tgt->st_ino = TheISA::htog(tgt->st_ino); 4793113Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4803113Sgblack@eecs.umich.edu if (fakeTTY) { 48112032Sandreas.sandberg@arm.com // Claim to be a character device 4823113Sgblack@eecs.umich.edu tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4833113Sgblack@eecs.umich.edu tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4844189Sgblack@eecs.umich.edu } 4854189Sgblack@eecs.umich.edu tgt->st_mode = TheISA::htog(tgt->st_mode); 4863113Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4873113Sgblack@eecs.umich.edu tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4883113Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4898737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4903113Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4918737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4923113Sgblack@eecs.umich.edu if (fakeTTY) 4938737Skoansin.tan@gmail.com tgt->st_rdev = 0x880d; 4943113Sgblack@eecs.umich.edu else 4953113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4963113Sgblack@eecs.umich.edu tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4973113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4983113Sgblack@eecs.umich.edu tgt->st_size = TheISA::htog(tgt->st_size); 4993113Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5003113Sgblack@eecs.umich.edu tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 50111906SBrandon.Potter@amd.com tgt->st_mtimeX = host->st_mtime; 5023113Sgblack@eecs.umich.edu tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 50312032Sandreas.sandberg@arm.com tgt->st_ctimeX = host->st_ctime; 5048852Sandreas.hansson@arm.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 50511906SBrandon.Potter@amd.com // Force the block size to be 8k. This helps to ensure buffered io works 5063113Sgblack@eecs.umich.edu // consistently across different hosts. 5073113Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5083113Sgblack@eecs.umich.edu tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5093113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5103113Sgblack@eecs.umich.edu tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5113113Sgblack@eecs.umich.edu} 5123113Sgblack@eecs.umich.edu 5133113Sgblack@eecs.umich.edu// Same for stat64 51412032Sandreas.sandberg@arm.com 5158852Sandreas.hansson@arm.comtemplate <typename target_stat, typename host_stat64> 51611906SBrandon.Potter@amd.comstatic void 5173113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5183113Sgblack@eecs.umich.edu{ 5193113Sgblack@eecs.umich.edu using namespace TheISA; 5206686Stjones1@inf.ed.ac.uk 5213113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5223113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5233113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 52411759Sbrandon.potter@amd.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 52512032Sandreas.sandberg@arm.com tgt->st_mtime_nsec = host->st_mtime_nsec; 52611759Sbrandon.potter@amd.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 52711759Sbrandon.potter@amd.com tgt->st_ctime_nsec = host->st_ctime_nsec; 52811759Sbrandon.potter@amd.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 52911759Sbrandon.potter@amd.com#else 53011759Sbrandon.potter@amd.com tgt->st_atime_nsec = 0; 53111812Sbaz21@cam.ac.uk tgt->st_mtime_nsec = 0; 53211812Sbaz21@cam.ac.uk tgt->st_ctime_nsec = 0; 53311812Sbaz21@cam.ac.uk#endif 53411759Sbrandon.potter@amd.com} 53511812Sbaz21@cam.ac.uk 53611759Sbrandon.potter@amd.com//Here are a couple convenience functions 53711759Sbrandon.potter@amd.comtemplate<class OS> 53811759Sbrandon.potter@amd.comstatic void 53911759Sbrandon.potter@amd.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 54011759Sbrandon.potter@amd.com hst_stat *host, bool fakeTTY = false) 54111759Sbrandon.potter@amd.com{ 54211759Sbrandon.potter@amd.com typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 54311812Sbaz21@cam.ac.uk tgt_stat_buf tgt(addr); 54411812Sbaz21@cam.ac.uk convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 54511812Sbaz21@cam.ac.uk tgt.copyOut(mem); 54611812Sbaz21@cam.ac.uk} 54711812Sbaz21@cam.ac.uk 54811812Sbaz21@cam.ac.uktemplate<class OS> 54911812Sbaz21@cam.ac.ukstatic void 55011759Sbrandon.potter@amd.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 55111759Sbrandon.potter@amd.com hst_stat64 *host, bool fakeTTY = false) 55211812Sbaz21@cam.ac.uk{ 55311812Sbaz21@cam.ac.uk typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 55411759Sbrandon.potter@amd.com tgt_stat_buf tgt(addr); 55511812Sbaz21@cam.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 55611812Sbaz21@cam.ac.uk tgt.copyOut(mem); 55711812Sbaz21@cam.ac.uk} 55811812Sbaz21@cam.ac.uk 55911812Sbaz21@cam.ac.uk/// Target ioctl() handler. For the most part, programs call ioctl() 56011812Sbaz21@cam.ac.uk/// only to find out if their stdout is a tty, to determine whether to 56111812Sbaz21@cam.ac.uk/// do line or block buffering. We always claim that output fds are 56211759Sbrandon.potter@amd.com/// not TTYs to provide repeatable results. 56311759Sbrandon.potter@amd.comtemplate <class OS> 56411759Sbrandon.potter@amd.comSyscallReturn 56511759Sbrandon.potter@amd.comioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 566378SN/A ThreadContext *tc) 567378SN/A{ 5689141Smarc.orr@gmail.com int index = 0; 5699141Smarc.orr@gmail.com int tgt_fd = process->getSyscallArg(tc, index); 570360SN/A unsigned req = process->getSyscallArg(tc, index); 5711450SN/A 57211856Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 573360SN/A 5746701Sgblack@eecs.umich.edu FDEntry *fde = process->getFDEntry(tgt_fd); 57511856Sbrandon.potter@amd.com 57611856Sbrandon.potter@amd.com if (fde == NULL) { 577360SN/A // doesn't map to any simulator fd: not a valid target fd 57810930Sbrandon.potter@amd.com return -EBADF; 579360SN/A } 58011856Sbrandon.potter@amd.com 58111856Sbrandon.potter@amd.com if (fde->driver != NULL) { 58210496Ssteve.reinhardt@amd.com return fde->driver->ioctl(process, tc, req); 58311856Sbrandon.potter@amd.com } 58411856Sbrandon.potter@amd.com 5851458SN/A if (OS::isTtyReq(req)) { 586360SN/A return -ENOTTY; 58711856Sbrandon.potter@amd.com } 58811856Sbrandon.potter@amd.com 58911856Sbrandon.potter@amd.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 59011856Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 59111856Sbrandon.potter@amd.com return -ENOTTY; 59211856Sbrandon.potter@amd.com} 59311856Sbrandon.potter@amd.com 59411856Sbrandon.potter@amd.comtemplate <class OS> 59510496Ssteve.reinhardt@amd.comstatic SyscallReturn 59611856Sbrandon.potter@amd.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 59711856Sbrandon.potter@amd.com ThreadContext *tc, int index) 59811856Sbrandon.potter@amd.com{ 59911856Sbrandon.potter@amd.com std::string path; 60011856Sbrandon.potter@amd.com 60110930Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 6029141Smarc.orr@gmail.com process->getSyscallArg(tc, index))) 603360SN/A return -EFAULT; 604360SN/A 605360SN/A int tgtFlags = process->getSyscallArg(tc, index); 60611907SBrandon.Potter@amd.com int mode = process->getSyscallArg(tc, index); 60711907SBrandon.Potter@amd.com int hostFlags = 0; 60811907SBrandon.Potter@amd.com 609360SN/A // translate open flags 61011907SBrandon.Potter@amd.com for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 61111907SBrandon.Potter@amd.com if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 61211907SBrandon.Potter@amd.com tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 61311907SBrandon.Potter@amd.com hostFlags |= OS::openFlagTable[i].hostFlag; 61411907SBrandon.Potter@amd.com } 61511907SBrandon.Potter@amd.com } 61611907SBrandon.Potter@amd.com 61711907SBrandon.Potter@amd.com // any target flags left? 61811907SBrandon.Potter@amd.com if (tgtFlags != 0) 61911907SBrandon.Potter@amd.com warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 62011907SBrandon.Potter@amd.com 62111907SBrandon.Potter@amd.com#ifdef __CYGWIN32__ 62211907SBrandon.Potter@amd.com hostFlags |= O_BINARY; 62311907SBrandon.Potter@amd.com#endif 624360SN/A 62511907SBrandon.Potter@amd.com // Adjust path for current working directory 6261458SN/A path = process->fullPath(path); 627360SN/A 62811907SBrandon.Potter@amd.com DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 62911907SBrandon.Potter@amd.com 63011907SBrandon.Potter@amd.com if (startswith(path, "/dev/")) { 63111907SBrandon.Potter@amd.com std::string filename = path.substr(strlen("/dev/")); 63211907SBrandon.Potter@amd.com if (filename == "sysdev0") { 63311907SBrandon.Potter@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 63411907SBrandon.Potter@amd.com // We don't support it, so just punt. 63511907SBrandon.Potter@amd.com warn("Ignoring open(%s, ...)\n", path); 63611907SBrandon.Potter@amd.com return -ENOENT; 63711907SBrandon.Potter@amd.com } 638360SN/A 63911907SBrandon.Potter@amd.com EmulatedDriver *drv = process->findDriver(filename); 64011907SBrandon.Potter@amd.com if (drv != NULL) { 64111907SBrandon.Potter@amd.com // the driver's open method will allocate a fd from the 642360SN/A // process if necessary. 643360SN/A return drv->open(process, tc, mode, hostFlags); 64411907SBrandon.Potter@amd.com } 64511907SBrandon.Potter@amd.com 64611907SBrandon.Potter@amd.com // fall through here for pass through to host devices, such as 64711907SBrandon.Potter@amd.com // /dev/zero 648360SN/A } 64911907SBrandon.Potter@amd.com 650360SN/A int fd; 651360SN/A int local_errno; 65211907SBrandon.Potter@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6533669Sbinkertn@umich.edu startswith(path, "/platform/") || startswith(path, "/sys/")) { 65411907SBrandon.Potter@amd.com // It's a proc/sys entry and requires special handling 65511907SBrandon.Potter@amd.com fd = OS::openSpecialFile(path, process, tc); 65611907SBrandon.Potter@amd.com local_errno = ENOENT; 65711907SBrandon.Potter@amd.com } else { 65811907SBrandon.Potter@amd.com // open the file 65911907SBrandon.Potter@amd.com fd = open(path.c_str(), hostFlags, mode); 66011907SBrandon.Potter@amd.com local_errno = errno; 66111907SBrandon.Potter@amd.com } 66211907SBrandon.Potter@amd.com 66311907SBrandon.Potter@amd.com if (fd == -1) 66411907SBrandon.Potter@amd.com return -local_errno; 66511907SBrandon.Potter@amd.com 66611907SBrandon.Potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 66711907SBrandon.Potter@amd.com} 66811907SBrandon.Potter@amd.com 66911907SBrandon.Potter@amd.com/// Target open() handler. 67011907SBrandon.Potter@amd.comtemplate <class OS> 67111907SBrandon.Potter@amd.comSyscallReturn 67211907SBrandon.Potter@amd.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67311907SBrandon.Potter@amd.com ThreadContext *tc) 67411907SBrandon.Potter@amd.com{ 6751706SN/A return openFunc<OS>(desc, callnum, process, tc, 0); 67611907SBrandon.Potter@amd.com} 67711907SBrandon.Potter@amd.com 67811907SBrandon.Potter@amd.com/// Target openat() handler. 67911907SBrandon.Potter@amd.comtemplate <class OS> 68011907SBrandon.Potter@amd.comSyscallReturn 68111907SBrandon.Potter@amd.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 68210496Ssteve.reinhardt@amd.com ThreadContext *tc) 68310496Ssteve.reinhardt@amd.com{ 68411907SBrandon.Potter@amd.com int index = 0; 68511907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 68611907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 68711907SBrandon.Potter@amd.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 68811907SBrandon.Potter@amd.com return openFunc<OS>(desc, callnum, process, tc, 1); 68911907SBrandon.Potter@amd.com} 69010496Ssteve.reinhardt@amd.com 69111907SBrandon.Potter@amd.com/// Target unlinkat() handler. 69211907SBrandon.Potter@amd.comtemplate <class OS> 69311907SBrandon.Potter@amd.comSyscallReturn 69411907SBrandon.Potter@amd.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69510496Ssteve.reinhardt@amd.com ThreadContext *tc) 69610496Ssteve.reinhardt@amd.com{ 69711907SBrandon.Potter@amd.com int index = 0; 69811907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 69911907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 70011907SBrandon.Potter@amd.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 70111907SBrandon.Potter@amd.com 70211907SBrandon.Potter@amd.com return unlinkHelper(desc, callnum, process, tc, 1); 70311907SBrandon.Potter@amd.com} 70411907SBrandon.Potter@amd.com 70511907SBrandon.Potter@amd.com/// Target facessat() handler 70611907SBrandon.Potter@amd.comtemplate <class OS> 70711907SBrandon.Potter@amd.comSyscallReturn 70811907SBrandon.Potter@amd.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70911907SBrandon.Potter@amd.com ThreadContext *tc) 71011907SBrandon.Potter@amd.com{ 71111907SBrandon.Potter@amd.com int index = 0; 71211907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 71311907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 71411907SBrandon.Potter@amd.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 71511907SBrandon.Potter@amd.com return accessFunc(desc, callnum, process, tc, 1); 71611907SBrandon.Potter@amd.com} 71711907SBrandon.Potter@amd.com 71811907SBrandon.Potter@amd.com/// Target readlinkat() handler 71911907SBrandon.Potter@amd.comtemplate <class OS> 72011907SBrandon.Potter@amd.comSyscallReturn 72111907SBrandon.Potter@amd.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 722360SN/A ThreadContext *tc) 72311907SBrandon.Potter@amd.com{ 72411907SBrandon.Potter@amd.com int index = 0; 72511907SBrandon.Potter@amd.com int dirfd = process->getSyscallArg(tc, index); 72611907SBrandon.Potter@amd.com if (dirfd != OS::TGT_AT_FDCWD) 72711907SBrandon.Potter@amd.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 72811907SBrandon.Potter@amd.com return readlinkFunc(desc, callnum, process, tc, 1); 72911907SBrandon.Potter@amd.com} 73011907SBrandon.Potter@amd.com 73111907SBrandon.Potter@amd.com/// Target renameat() handler. 73211907SBrandon.Potter@amd.comtemplate <class OS> 73311907SBrandon.Potter@amd.comSyscallReturn 73411907SBrandon.Potter@amd.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 73511907SBrandon.Potter@amd.com ThreadContext *tc) 736360SN/A{ 737360SN/A int index = 0; 73810027SChris.Adeniyi-Jones@arm.com 73910027SChris.Adeniyi-Jones@arm.com int olddirfd = process->getSyscallArg(tc, index); 74010027SChris.Adeniyi-Jones@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 74111851Sbrandon.potter@amd.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 74210027SChris.Adeniyi-Jones@arm.com 74310027SChris.Adeniyi-Jones@arm.com std::string old_name; 74411907SBrandon.Potter@amd.com 74510027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(old_name, 74610027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 74710027SChris.Adeniyi-Jones@arm.com return -EFAULT; 74810027SChris.Adeniyi-Jones@arm.com 74910027SChris.Adeniyi-Jones@arm.com int newdirfd = process->getSyscallArg(tc, index); 75011851Sbrandon.potter@amd.com if (newdirfd != OS::TGT_AT_FDCWD) 75111851Sbrandon.potter@amd.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 75210027SChris.Adeniyi-Jones@arm.com 75311907SBrandon.Potter@amd.com std::string new_name; 75410027SChris.Adeniyi-Jones@arm.com 75510027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(new_name, 75610633Smichaelupton@gmail.com process->getSyscallArg(tc, index))) 75710633Smichaelupton@gmail.com return -EFAULT; 75810633Smichaelupton@gmail.com 75911851Sbrandon.potter@amd.com // Adjust path for current working directory 76010633Smichaelupton@gmail.com old_name = process->fullPath(old_name); 76110633Smichaelupton@gmail.com new_name = process->fullPath(new_name); 76210633Smichaelupton@gmail.com 76310633Smichaelupton@gmail.com int result = rename(old_name.c_str(), new_name.c_str()); 76410633Smichaelupton@gmail.com return (result == -1) ? -errno : result; 76510633Smichaelupton@gmail.com} 76610633Smichaelupton@gmail.com 76710633Smichaelupton@gmail.com/// Target sysinfo() handler. 76810633Smichaelupton@gmail.comtemplate <class OS> 76910633Smichaelupton@gmail.comSyscallReturn 77010203SAli.Saidi@ARM.comsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 77110203SAli.Saidi@ARM.com ThreadContext *tc) 77210203SAli.Saidi@ARM.com{ 77311851Sbrandon.potter@amd.com 77411851Sbrandon.potter@amd.com int index = 0; 77510203SAli.Saidi@ARM.com TypedBufferArg<typename OS::tgt_sysinfo> 77610203SAli.Saidi@ARM.com sysinfo(process->getSyscallArg(tc, index)); 77710203SAli.Saidi@ARM.com 77810203SAli.Saidi@ARM.com sysinfo->uptime=seconds_since_epoch; 77910203SAli.Saidi@ARM.com sysinfo->totalram=process->system->memSize(); 78010203SAli.Saidi@ARM.com 78110203SAli.Saidi@ARM.com sysinfo.copyOut(tc->getMemProxy()); 78210203SAli.Saidi@ARM.com 78310203SAli.Saidi@ARM.com return 0; 78410203SAli.Saidi@ARM.com} 78510203SAli.Saidi@ARM.com 78611851Sbrandon.potter@amd.com/// Target chmod() handler. 78711851Sbrandon.potter@amd.comtemplate <class OS> 78810203SAli.Saidi@ARM.comSyscallReturn 78910203SAli.Saidi@ARM.comchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 79010203SAli.Saidi@ARM.com ThreadContext *tc) 79110203SAli.Saidi@ARM.com{ 79210203SAli.Saidi@ARM.com std::string path; 79310203SAli.Saidi@ARM.com 79410203SAli.Saidi@ARM.com int index = 0; 79510203SAli.Saidi@ARM.com if (!tc->getMemProxy().tryReadString(path, 79610850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) { 79710850SGiacomo.Gabrielli@arm.com return -EFAULT; 79810850SGiacomo.Gabrielli@arm.com } 79911851Sbrandon.potter@amd.com 80010850SGiacomo.Gabrielli@arm.com uint32_t mode = process->getSyscallArg(tc, index); 80110850SGiacomo.Gabrielli@arm.com mode_t hostMode = 0; 80210850SGiacomo.Gabrielli@arm.com 80310850SGiacomo.Gabrielli@arm.com // XXX translate mode flags via OS::something??? 80410850SGiacomo.Gabrielli@arm.com hostMode = mode; 80510850SGiacomo.Gabrielli@arm.com 80610850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 80710850SGiacomo.Gabrielli@arm.com path = process->fullPath(path); 80810850SGiacomo.Gabrielli@arm.com 80910850SGiacomo.Gabrielli@arm.com // do the chmod 81010850SGiacomo.Gabrielli@arm.com int result = chmod(path.c_str(), hostMode); 81110850SGiacomo.Gabrielli@arm.com if (result < 0) 81210850SGiacomo.Gabrielli@arm.com return -errno; 81310850SGiacomo.Gabrielli@arm.com 81410850SGiacomo.Gabrielli@arm.com return 0; 81510850SGiacomo.Gabrielli@arm.com} 81610850SGiacomo.Gabrielli@arm.com 81710850SGiacomo.Gabrielli@arm.com 81810850SGiacomo.Gabrielli@arm.com/// Target fchmod() handler. 81910850SGiacomo.Gabrielli@arm.comtemplate <class OS> 82010850SGiacomo.Gabrielli@arm.comSyscallReturn 82110850SGiacomo.Gabrielli@arm.comfchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 82210850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 82310850SGiacomo.Gabrielli@arm.com{ 82410850SGiacomo.Gabrielli@arm.com int index = 0; 82510850SGiacomo.Gabrielli@arm.com int tgt_fd = process->getSyscallArg(tc, index); 82610850SGiacomo.Gabrielli@arm.com uint32_t mode = process->getSyscallArg(tc, index); 82710850SGiacomo.Gabrielli@arm.com 82810850SGiacomo.Gabrielli@arm.com int sim_fd = process->getSimFD(tgt_fd); 82910850SGiacomo.Gabrielli@arm.com if (sim_fd < 0) 83010850SGiacomo.Gabrielli@arm.com return -EBADF; 83110850SGiacomo.Gabrielli@arm.com 8326640Svince@csl.cornell.edu mode_t hostMode = 0; 8336640Svince@csl.cornell.edu 8346640Svince@csl.cornell.edu // XXX translate mode flags via OS::someting??? 83511851Sbrandon.potter@amd.com hostMode = mode; 83611851Sbrandon.potter@amd.com 8376640Svince@csl.cornell.edu // do the fchmod 8386640Svince@csl.cornell.edu int result = fchmod(sim_fd, hostMode); 8396701Sgblack@eecs.umich.edu if (result < 0) 8406701Sgblack@eecs.umich.edu return -errno; 84110793Sbrandon.potter@amd.com 8426640Svince@csl.cornell.edu return 0; 84311758Sbrandon.potter@amd.com} 84411758Sbrandon.potter@amd.com 84511758Sbrandon.potter@amd.com/// Target mremap() handler. 8466640Svince@csl.cornell.edutemplate <class OS> 8478706Sandreas.hansson@arm.comSyscallReturn 8486640Svince@csl.cornell.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8496701Sgblack@eecs.umich.edu{ 8506640Svince@csl.cornell.edu int index = 0; 851360SN/A Addr start = process->getSyscallArg(tc, index); 8521999SN/A uint64_t old_length = process->getSyscallArg(tc, index); 8531999SN/A uint64_t new_length = process->getSyscallArg(tc, index); 8541999SN/A uint64_t flags = process->getSyscallArg(tc, index); 85511851Sbrandon.potter@amd.com uint64_t provided_address = 0; 8562680Sktlim@umich.edu bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 8571999SN/A 8581999SN/A if (use_provided_address) 8591999SN/A provided_address = process->getSyscallArg(tc, index); 8606701Sgblack@eecs.umich.edu 8618852Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 8626701Sgblack@eecs.umich.edu (provided_address % TheISA::PageBytes != 0)) { 8631999SN/A warn("mremap failing: arguments not page aligned"); 8646701Sgblack@eecs.umich.edu return -EINVAL; 8651999SN/A } 8666701Sgblack@eecs.umich.edu 8671999SN/A new_length = roundUp(new_length, TheISA::PageBytes); 8681999SN/A 8691999SN/A if (new_length > old_length) { 8701999SN/A if ((start + old_length) == process->mmap_end && 8711999SN/A (!use_provided_address || provided_address == start)) { 8723669Sbinkertn@umich.edu uint64_t diff = new_length - old_length; 8733669Sbinkertn@umich.edu process->allocateMem(process->mmap_end, diff); 8743669Sbinkertn@umich.edu process->mmap_end += diff; 8751999SN/A return start; 8761999SN/A } else { 8771999SN/A if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8782218SN/A warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8791999SN/A return -ENOMEM; 8801999SN/A } else { 8811999SN/A uint64_t new_start = use_provided_address ? 8821999SN/A provided_address : process->mmap_end; 8831999SN/A process->pTable->remap(start, old_length, new_start); 8841999SN/A warn("mremapping to new vaddr %08p-%08p, adding %d\n", 8851999SN/A new_start, new_start + new_length, 8861999SN/A new_length - old_length); 88711856Sbrandon.potter@amd.com // add on the remaining unallocated pages 8881999SN/A process->allocateMem(new_start + old_length, 8896701Sgblack@eecs.umich.edu new_length - old_length, 89011856Sbrandon.potter@amd.com use_provided_address /* clobber */); 89111856Sbrandon.potter@amd.com if (!use_provided_address) 89210931Sbrandon.potter@amd.com process->mmap_end += new_length; 89311856Sbrandon.potter@amd.com if (use_provided_address && 89411856Sbrandon.potter@amd.com new_start + new_length > process->mmap_end) { 8951999SN/A // something fishy going on here, at least notify the user 89611856Sbrandon.potter@amd.com // @todo: increase mmap_end? 8971999SN/A warn("mmap region limit exceeded with MREMAP_FIXED\n"); 89811856Sbrandon.potter@amd.com } 8991999SN/A warn("returning %08p as start\n", new_start); 90011856Sbrandon.potter@amd.com return new_start; 9011999SN/A } 90211856Sbrandon.potter@amd.com } 9031999SN/A } else { 9041999SN/A if (use_provided_address && provided_address != start) 9055877Shsul@eecs.umich.edu process->pTable->remap(start, new_length, provided_address); 9065877Shsul@eecs.umich.edu process->pTable->unmap(start + new_length, old_length - new_length); 9075877Shsul@eecs.umich.edu return use_provided_address ? provided_address : start; 90811851Sbrandon.potter@amd.com } 9095877Shsul@eecs.umich.edu} 9106701Sgblack@eecs.umich.edu 9116701Sgblack@eecs.umich.edu/// Target stat() handler. 9126701Sgblack@eecs.umich.edutemplate <class OS> 9136701Sgblack@eecs.umich.eduSyscallReturn 9146701Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 91510027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 91610027SChris.Adeniyi-Jones@arm.com{ 91710027SChris.Adeniyi-Jones@arm.com std::string path; 91810027SChris.Adeniyi-Jones@arm.com 91910027SChris.Adeniyi-Jones@arm.com int index = 0; 9205877Shsul@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 92110318Sandreas.hansson@arm.com process->getSyscallArg(tc, index))) { 92210318Sandreas.hansson@arm.com return -EFAULT; 9235877Shsul@eecs.umich.edu } 9245877Shsul@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9255877Shsul@eecs.umich.edu 9265877Shsul@eecs.umich.edu // Adjust path for current working directory 92710486Stjablin@gmail.com path = process->fullPath(path); 92810486Stjablin@gmail.com 9295877Shsul@eecs.umich.edu struct stat hostBuf; 93011905SBrandon.Potter@amd.com int result = stat(path.c_str(), &hostBuf); 93111905SBrandon.Potter@amd.com 93211905SBrandon.Potter@amd.com if (result < 0) 93311905SBrandon.Potter@amd.com return -errno; 93410027SChris.Adeniyi-Jones@arm.com 93512206Srico.amslinger@informatik.uni-augsburg.de copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 93612206Srico.amslinger@informatik.uni-augsburg.de 9375877Shsul@eecs.umich.edu return 0; 93811905SBrandon.Potter@amd.com} 93911905SBrandon.Potter@amd.com 9405877Shsul@eecs.umich.edu 9415877Shsul@eecs.umich.edu/// Target stat64() handler. 94210027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 9435877Shsul@eecs.umich.eduSyscallReturn 9445877Shsul@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9455877Shsul@eecs.umich.edu ThreadContext *tc) 94612206Srico.amslinger@informatik.uni-augsburg.de{ 94712206Srico.amslinger@informatik.uni-augsburg.de std::string path; 94812206Srico.amslinger@informatik.uni-augsburg.de 94912206Srico.amslinger@informatik.uni-augsburg.de int index = 0; 95012206Srico.amslinger@informatik.uni-augsburg.de if (!tc->getMemProxy().tryReadString(path, 95112206Srico.amslinger@informatik.uni-augsburg.de process->getSyscallArg(tc, index))) 95212206Srico.amslinger@informatik.uni-augsburg.de return -EFAULT; 95312206Srico.amslinger@informatik.uni-augsburg.de Addr bufPtr = process->getSyscallArg(tc, index); 95412206Srico.amslinger@informatik.uni-augsburg.de 95510027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 95610027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 95710027SChris.Adeniyi-Jones@arm.com 95810027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 9595877Shsul@eecs.umich.edu struct stat hostBuf; 96010027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 96110027SChris.Adeniyi-Jones@arm.com#else 96210027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 96310027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 96412206Srico.amslinger@informatik.uni-augsburg.de#endif 96512206Srico.amslinger@informatik.uni-augsburg.de 96612206Srico.amslinger@informatik.uni-augsburg.de if (result < 0) 96712206Srico.amslinger@informatik.uni-augsburg.de return -errno; 96810027SChris.Adeniyi-Jones@arm.com 96910027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 97010027SChris.Adeniyi-Jones@arm.com 97110027SChris.Adeniyi-Jones@arm.com return 0; 97210027SChris.Adeniyi-Jones@arm.com} 97310027SChris.Adeniyi-Jones@arm.com 9745877Shsul@eecs.umich.edu 9755877Shsul@eecs.umich.edu/// Target fstatat64() handler. 9765877Shsul@eecs.umich.edutemplate <class OS> 97710027SChris.Adeniyi-Jones@arm.comSyscallReturn 97810027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9798601Ssteve.reinhardt@amd.com ThreadContext *tc) 98010027SChris.Adeniyi-Jones@arm.com{ 9815877Shsul@eecs.umich.edu int index = 0; 9825877Shsul@eecs.umich.edu int dirfd = process->getSyscallArg(tc, index); 9831999SN/A if (dirfd != OS::TGT_AT_FDCWD) 984378SN/A warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 985360SN/A 9861450SN/A std::string path; 98711851Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 9882680Sktlim@umich.edu process->getSyscallArg(tc, index))) 989360SN/A return -EFAULT; 990360SN/A Addr bufPtr = process->getSyscallArg(tc, index); 991360SN/A 9926701Sgblack@eecs.umich.edu // Adjust path for current working directory 9938852Sandreas.hansson@arm.com path = process->fullPath(path); 9946701Sgblack@eecs.umich.edu 9956701Sgblack@eecs.umich.edu#if NO_STAT64 9966701Sgblack@eecs.umich.edu struct stat hostBuf; 9976701Sgblack@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 998360SN/A#else 9993669Sbinkertn@umich.edu struct stat64 hostBuf; 10003669Sbinkertn@umich.edu int result = stat64(path.c_str(), &hostBuf); 10013669Sbinkertn@umich.edu#endif 1002360SN/A 1003360SN/A if (result < 0) 1004360SN/A return -errno; 1005360SN/A 10062218SN/A copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1007360SN/A 10088706Sandreas.hansson@arm.com return 0; 1009360SN/A} 10101458SN/A 1011360SN/A 1012360SN/A/// Target fstat64() handler. 1013360SN/Atemplate <class OS> 10145074Ssaidi@eecs.umich.eduSyscallReturn 10155074Ssaidi@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10165074Ssaidi@eecs.umich.edu ThreadContext *tc) 101711851Sbrandon.potter@amd.com{ 10185074Ssaidi@eecs.umich.edu int index = 0; 10195074Ssaidi@eecs.umich.edu int tgt_fd = process->getSyscallArg(tc, index); 10205074Ssaidi@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10215074Ssaidi@eecs.umich.edu 10226701Sgblack@eecs.umich.edu int sim_fd = process->getSimFD(tgt_fd); 10238852Sandreas.hansson@arm.com if (sim_fd < 0) 10246701Sgblack@eecs.umich.edu return -EBADF; 10255074Ssaidi@eecs.umich.edu 10266701Sgblack@eecs.umich.edu#if NO_STAT64 10275074Ssaidi@eecs.umich.edu struct stat hostBuf; 10285074Ssaidi@eecs.umich.edu int result = fstat(sim_fd, &hostBuf); 10295074Ssaidi@eecs.umich.edu#else 10305074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 10315208Ssaidi@eecs.umich.edu int result = fstat64(sim_fd, &hostBuf); 10325208Ssaidi@eecs.umich.edu#endif 10335208Ssaidi@eecs.umich.edu 10345208Ssaidi@eecs.umich.edu if (result < 0) 10355074Ssaidi@eecs.umich.edu return -errno; 10365074Ssaidi@eecs.umich.edu 10375208Ssaidi@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10385074Ssaidi@eecs.umich.edu 10395074Ssaidi@eecs.umich.edu return 0; 10405074Ssaidi@eecs.umich.edu} 10415074Ssaidi@eecs.umich.edu 10428706Sandreas.hansson@arm.com 10435074Ssaidi@eecs.umich.edu/// Target lstat() handler. 10445074Ssaidi@eecs.umich.edutemplate <class OS> 10455074Ssaidi@eecs.umich.eduSyscallReturn 10465074Ssaidi@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10475074Ssaidi@eecs.umich.edu ThreadContext *tc) 104810027SChris.Adeniyi-Jones@arm.com{ 104910027SChris.Adeniyi-Jones@arm.com std::string path; 105010027SChris.Adeniyi-Jones@arm.com 105111851Sbrandon.potter@amd.com int index = 0; 105210027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 105310027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) { 105410027SChris.Adeniyi-Jones@arm.com return -EFAULT; 105510027SChris.Adeniyi-Jones@arm.com } 105610027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 105710793Sbrandon.potter@amd.com 105810027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 105910027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 106010027SChris.Adeniyi-Jones@arm.com 106110027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 106210027SChris.Adeniyi-Jones@arm.com int result = lstat(path.c_str(), &hostBuf); 106310027SChris.Adeniyi-Jones@arm.com 106410027SChris.Adeniyi-Jones@arm.com if (result < 0) 106510027SChris.Adeniyi-Jones@arm.com return -errno; 106610027SChris.Adeniyi-Jones@arm.com 106710027SChris.Adeniyi-Jones@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 106810027SChris.Adeniyi-Jones@arm.com 106910027SChris.Adeniyi-Jones@arm.com return 0; 107010027SChris.Adeniyi-Jones@arm.com} 107110027SChris.Adeniyi-Jones@arm.com 107210027SChris.Adeniyi-Jones@arm.com/// Target lstat64() handler. 107310027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 107410027SChris.Adeniyi-Jones@arm.comSyscallReturn 107510027SChris.Adeniyi-Jones@arm.comlstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 107610027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 107710027SChris.Adeniyi-Jones@arm.com{ 107810027SChris.Adeniyi-Jones@arm.com std::string path; 107910027SChris.Adeniyi-Jones@arm.com 108010027SChris.Adeniyi-Jones@arm.com int index = 0; 108110027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 108210027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) { 108310027SChris.Adeniyi-Jones@arm.com return -EFAULT; 108410027SChris.Adeniyi-Jones@arm.com } 10851999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 10861999SN/A 10871999SN/A // Adjust path for current working directory 108811856Sbrandon.potter@amd.com path = process->fullPath(path); 10891999SN/A 10906701Sgblack@eecs.umich.edu#if NO_STAT64 109111856Sbrandon.potter@amd.com struct stat hostBuf; 109211856Sbrandon.potter@amd.com int result = lstat(path.c_str(), &hostBuf); 109310931Sbrandon.potter@amd.com#else 109411856Sbrandon.potter@amd.com struct stat64 hostBuf; 109511856Sbrandon.potter@amd.com int result = lstat64(path.c_str(), &hostBuf); 10961999SN/A#endif 109711856Sbrandon.potter@amd.com 10981999SN/A if (result < 0) 10992764Sstever@eecs.umich.edu return -errno; 11002064SN/A 110110931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11022064SN/A 11032064SN/A return 0; 110410931Sbrandon.potter@amd.com} 11052064SN/A 11061999SN/A/// Target fstat() handler. 11071999SN/Atemplate <class OS> 11082218SN/ASyscallReturn 11091999SN/AfstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 111010931Sbrandon.potter@amd.com ThreadContext *tc) 11111999SN/A{ 11121999SN/A int index = 0; 11131999SN/A int tgt_fd = process->getSyscallArg(tc, index); 11141999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11151999SN/A 1116378SN/A DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1117360SN/A 11181450SN/A int sim_fd = process->getSimFD(tgt_fd); 111911851Sbrandon.potter@amd.com if (sim_fd < 0) 11202680Sktlim@umich.edu return -EBADF; 1121360SN/A 1122360SN/A struct stat hostBuf; 1123360SN/A int result = fstat(sim_fd, &hostBuf); 11246701Sgblack@eecs.umich.edu 11258852Sandreas.hansson@arm.com if (result < 0) 11266701Sgblack@eecs.umich.edu return -errno; 11276701Sgblack@eecs.umich.edu 11286701Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11296701Sgblack@eecs.umich.edu 1130360SN/A return 0; 11313669Sbinkertn@umich.edu} 11323669Sbinkertn@umich.edu 11333669Sbinkertn@umich.edu 1134360SN/A/// Target statfs() handler. 1135360SN/Atemplate <class OS> 1136360SN/ASyscallReturn 1137360SN/AstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11381458SN/A ThreadContext *tc) 1139360SN/A{ 11408706Sandreas.hansson@arm.com std::string path; 1141360SN/A 11421458SN/A int index = 0; 1143360SN/A if (!tc->getMemProxy().tryReadString(path, 1144360SN/A process->getSyscallArg(tc, index))) { 11451999SN/A return -EFAULT; 11461999SN/A } 11471999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 114811851Sbrandon.potter@amd.com 11492680Sktlim@umich.edu // Adjust path for current working directory 11501999SN/A path = process->fullPath(path); 11511999SN/A 11521999SN/A struct statfs hostBuf; 11536701Sgblack@eecs.umich.edu int result = statfs(path.c_str(), &hostBuf); 11548852Sandreas.hansson@arm.com 11556701Sgblack@eecs.umich.edu if (result < 0) 11566701Sgblack@eecs.umich.edu return -errno; 11576701Sgblack@eecs.umich.edu 11586701Sgblack@eecs.umich.edu OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11591999SN/A 11603669Sbinkertn@umich.edu return 0; 11613669Sbinkertn@umich.edu} 11623669Sbinkertn@umich.edu 11632764Sstever@eecs.umich.edu 11642064SN/A/// Target fstatfs() handler. 11652064SN/Atemplate <class OS> 11662064SN/ASyscallReturn 11671999SN/AfstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11681999SN/A ThreadContext *tc) 11692064SN/A{ 11701999SN/A int index = 0; 11711999SN/A int tgt_fd = process->getSyscallArg(tc, index); 11721999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11731999SN/A 11748706Sandreas.hansson@arm.com int sim_fd = process->getSimFD(tgt_fd); 11751999SN/A if (sim_fd < 0) 11761999SN/A return -EBADF; 11771999SN/A 11781999SN/A struct statfs hostBuf; 1179378SN/A int result = fstatfs(sim_fd, &hostBuf); 1180360SN/A 11811450SN/A if (result < 0) 118211856Sbrandon.potter@amd.com return -errno; 1183360SN/A 11846701Sgblack@eecs.umich.edu OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 118511856Sbrandon.potter@amd.com 118611856Sbrandon.potter@amd.com return 0; 1187360SN/A} 118811380Salexandru.dutu@amd.com 1189360SN/A 119011856Sbrandon.potter@amd.com/// Target writev() handler. 119111856Sbrandon.potter@amd.comtemplate <class OS> 11921458SN/ASyscallReturn 119311856Sbrandon.potter@amd.comwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1194360SN/A ThreadContext *tc) 1195360SN/A{ 119610931Sbrandon.potter@amd.com int index = 0; 1197360SN/A int tgt_fd = process->getSyscallArg(tc, index); 1198360SN/A 11991458SN/A int sim_fd = process->getSimFD(tgt_fd); 1200360SN/A if (sim_fd < 0) 120110931Sbrandon.potter@amd.com return -EBADF; 12022021SN/A 12031458SN/A SETranslatingPortProxy &p = tc->getMemProxy(); 1204360SN/A uint64_t tiov_base = process->getSyscallArg(tc, index); 1205360SN/A size_t count = process->getSyscallArg(tc, index); 1206360SN/A struct iovec hiov[count]; 12071706SN/A for (size_t i = 0; i < count; ++i) { 12081706SN/A typename OS::tgt_iovec tiov; 12091706SN/A 121011851Sbrandon.potter@amd.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12112680Sktlim@umich.edu (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12121706SN/A hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 121311799Sbrandon.potter@amd.com hiov[i].iov_base = new char [hiov[i].iov_len]; 121411799Sbrandon.potter@amd.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 121511799Sbrandon.potter@amd.com hiov[i].iov_len); 12161706SN/A } 12171706SN/A 12186701Sgblack@eecs.umich.edu int result = writev(sim_fd, hiov, count); 12198852Sandreas.hansson@arm.com 12206701Sgblack@eecs.umich.edu for (size_t i = 0; i < count; ++i) 12216701Sgblack@eecs.umich.edu delete [] (char *)hiov[i].iov_base; 12226701Sgblack@eecs.umich.edu 12236701Sgblack@eecs.umich.edu if (result < 0) 12241706SN/A return -errno; 12253669Sbinkertn@umich.edu 12263669Sbinkertn@umich.edu return result; 12273669Sbinkertn@umich.edu} 12281706SN/A 12291706SN/A/// Real mmap handler. 12301706SN/Atemplate <class OS> 12311706SN/ASyscallReturn 12322218SN/AmmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 12331706SN/A bool is_mmap2) 123411759Sbrandon.potter@amd.com{ 123511799Sbrandon.potter@amd.com int index = 0; 12361706SN/A Addr start = p->getSyscallArg(tc, index); 12371706SN/A uint64_t length = p->getSyscallArg(tc, index); 12381706SN/A int prot = p->getSyscallArg(tc, index); 123911886Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 124011886Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 124111886Sbrandon.potter@amd.com int offset = p->getSyscallArg(tc, index); 124211886Sbrandon.potter@amd.com 124311886Sbrandon.potter@amd.com if (is_mmap2) 124411886Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 124511886Sbrandon.potter@amd.com 124611886Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 124711886Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 124811886Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 124911886Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 125011886Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 125111886Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 125211886Sbrandon.potter@amd.com !length) { 125311886Sbrandon.potter@amd.com return -EINVAL; 125411886Sbrandon.potter@amd.com } 125511886Sbrandon.potter@amd.com 125611886Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 125711886Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 125811886Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 125911886Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 126011886Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 126111886Sbrandon.potter@amd.com // structure which maintains information about the which virtual 126211886Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 126311886Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 126411886Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 126511886Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 126611886Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 126711886Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 126811886Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 126911886Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 127011886Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 127111886Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 127211886Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 127311886Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 127411886Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 127511886Sbrandon.potter@amd.com // a call to msync, but that again would require more information 127611886Sbrandon.potter@amd.com // than we currently maintain. 127711886Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 127811886Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 127911886Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 128011886Sbrandon.potter@amd.com } 128111886Sbrandon.potter@amd.com 128211886Sbrandon.potter@amd.com length = roundUp(length, TheISA::PageBytes); 128311886Sbrandon.potter@amd.com 128411886Sbrandon.potter@amd.com int sim_fd = -1; 128511886Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 128611886Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 128711886Sbrandon.potter@amd.com sim_fd = p->getSimFD(tgt_fd); 128811886Sbrandon.potter@amd.com if (sim_fd < 0) 128911886Sbrandon.potter@amd.com return -EBADF; 129011886Sbrandon.potter@amd.com 129111886Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 129211886Sbrandon.potter@amd.com sim_fd, offset); 129311886Sbrandon.potter@amd.com 129411886Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 129511886Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 129611886Sbrandon.potter@amd.com return -errno; 129711886Sbrandon.potter@amd.com } 129811886Sbrandon.potter@amd.com } 129911886Sbrandon.potter@amd.com 130011886Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 130111886Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 130211886Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 130311886Sbrandon.potter@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 130411886Sbrandon.potter@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 130511886Sbrandon.potter@amd.com } 130611886Sbrandon.potter@amd.com 130711886Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 130811886Sbrandon.potter@amd.com start, start + length - 1); 130911886Sbrandon.potter@amd.com 131011911SBrandon.Potter@amd.com // We only allow mappings to overwrite existing mappings if 131111911SBrandon.Potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 131211911SBrandon.Potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 131311911SBrandon.Potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 131411911SBrandon.Potter@amd.com if (clobber) { 131511911SBrandon.Potter@amd.com for (auto tc : p->system->threadContexts) { 131611911SBrandon.Potter@amd.com // If we might be overwriting old mappings, we need to 131711886Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 131811886Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 131911886Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 132011886Sbrandon.potter@amd.com } 132111886Sbrandon.potter@amd.com } 132211886Sbrandon.potter@amd.com 132311886Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 132411886Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 132511886Sbrandon.potter@amd.com // fatal and bail out of the simulation. 132611886Sbrandon.potter@amd.com p->allocateMem(start, length, clobber); 132711886Sbrandon.potter@amd.com 132811886Sbrandon.potter@amd.com // Transfer content into target address space. 132911886Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 133011886Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 133111886Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 133211886Sbrandon.potter@amd.com // with something like: 133311886Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 133411886Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 133511886Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 133611886Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 133711886Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 133811886Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 133911886Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 134011886Sbrandon.potter@amd.com } else { 134111886Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 134211886Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 134311886Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 134411886Sbrandon.potter@amd.com // the host into the target address space. 134511886Sbrandon.potter@amd.com struct stat file_stat; 134611886Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 134711886Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 134811886Sbrandon.potter@amd.com 134911886Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 135011886Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 135111886Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 135211886Sbrandon.potter@amd.com // on the specified offset into the file. 135311886Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 135411886Sbrandon.potter@amd.com length); 135511886Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 135611886Sbrandon.potter@amd.com 135711886Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 135811886Sbrandon.potter@amd.com munmap(pmap, length); 135911886Sbrandon.potter@amd.com 136011886Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 136111886Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 136211886Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 136311886Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 136411886Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 136511886Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 136611886Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 136711886Sbrandon.potter@amd.com if (interpreter) { 136811886Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 136911886Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 137011886Sbrandon.potter@amd.com 13711706SN/A Addr pc = tc->pcState().pc(); 13721706SN/A 13731706SN/A if (pc >= text_start && pc < text_end) { 13741706SN/A FDEntry *fde = p->getFDEntry(tgt_fd); 137511856Sbrandon.potter@amd.com 13761706SN/A ObjectFile *lib = createObjectFile(fde->filename); 13776701Sgblack@eecs.umich.edu 137811856Sbrandon.potter@amd.com if (lib) { 137911856Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 13801706SN/A lib->textBase(), start); 138111856Sbrandon.potter@amd.com } 138211856Sbrandon.potter@amd.com } 13831706SN/A } 138411856Sbrandon.potter@amd.com 13851706SN/A // Note that we do not zero out the remainder of the mapping. This 13861706SN/A // is done by a real system, but it probably will not affect 138710931Sbrandon.potter@amd.com // execution (hopefully). 13881706SN/A } 13891706SN/A 13902218SN/A return start; 13911706SN/A} 139211759Sbrandon.potter@amd.com 13931706SN/Atemplate <class OS> 13941706SN/ASyscallReturn 13951706SN/Apwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 13961706SN/A{ 13971706SN/A int index = 0; 13981999SN/A int tgt_fd = p->getSyscallArg(tc, index); 13991999SN/A Addr bufPtr = p->getSyscallArg(tc, index); 14001999SN/A int nbytes = p->getSyscallArg(tc, index); 140111856Sbrandon.potter@amd.com int offset = p->getSyscallArg(tc, index); 14021999SN/A 14036701Sgblack@eecs.umich.edu int sim_fd = p->getSimFD(tgt_fd); 140411856Sbrandon.potter@amd.com if (sim_fd < 0) 140510931Sbrandon.potter@amd.com return -EBADF; 140611856Sbrandon.potter@amd.com 140711856Sbrandon.potter@amd.com BufferArg bufArg(bufPtr, nbytes); 14081999SN/A bufArg.copyIn(tc->getMemProxy()); 140911856Sbrandon.potter@amd.com 14101999SN/A int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 141111856Sbrandon.potter@amd.com 141211856Sbrandon.potter@amd.com return (bytes_written == -1) ? -errno : bytes_written; 141311856Sbrandon.potter@amd.com} 14141999SN/A 14156227Snate@binkert.org/// Target mmap() handler. 14161999SN/Atemplate <class OS> 14172461SN/ASyscallReturn 141811856Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 141911856Sbrandon.potter@amd.com{ 14208737Skoansin.tan@gmail.com return mmapImpl<OS>(desc, num, p, tc, false); 14211999SN/A} 142211856Sbrandon.potter@amd.com 142311856Sbrandon.potter@amd.com/// Target mmap2() handler. 14241999SN/Atemplate <class OS> 14251999SN/ASyscallReturn 142610931Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 14271999SN/A{ 14286227Snate@binkert.org return mmapImpl<OS>(desc, num, p, tc, true); 14291999SN/A} 14301999SN/A 14311999SN/A/// Target getrlimit() handler. 14322218SN/Atemplate <class OS> 14331999SN/ASyscallReturn 143410629Sjthestness@gmail.comgetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14351999SN/A ThreadContext *tc) 14361999SN/A{ 143711385Sbrandon.potter@amd.com int index = 0; 1438360SN/A unsigned resource = process->getSyscallArg(tc, index); 14391450SN/A TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 144011851Sbrandon.potter@amd.com 144111385Sbrandon.potter@amd.com switch (resource) { 1442360SN/A case OS::TGT_RLIMIT_STACK: 14436701Sgblack@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14446701Sgblack@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14456701Sgblack@eecs.umich.edu rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 144611383Sbrandon.potter@amd.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 144711383Sbrandon.potter@amd.com break; 14488324Ssteve.reinhardt@amd.com 144910486Stjablin@gmail.com case OS::TGT_RLIMIT_DATA: 1450360SN/A // max data segment size in bytes: make up a number 145111385Sbrandon.potter@amd.com rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 145211385Sbrandon.potter@amd.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14539008Sgblack@eecs.umich.edu rlp->rlim_max = TheISA::htog(rlp->rlim_max); 145411383Sbrandon.potter@amd.com break; 145511383Sbrandon.potter@amd.com 145611383Sbrandon.potter@amd.com default: 145711383Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 145811383Sbrandon.potter@amd.com return -EINVAL; 145911383Sbrandon.potter@amd.com break; 146011383Sbrandon.potter@amd.com } 146111383Sbrandon.potter@amd.com 146211383Sbrandon.potter@amd.com rlp.copyOut(tc->getMemProxy()); 14638324Ssteve.reinhardt@amd.com return 0; 146411383Sbrandon.potter@amd.com} 146511383Sbrandon.potter@amd.com 146611383Sbrandon.potter@amd.com/// Target clock_gettime() function. 146711383Sbrandon.potter@amd.comtemplate <class OS> 146811383Sbrandon.potter@amd.comSyscallReturn 146911383Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 147011383Sbrandon.potter@amd.com{ 147111383Sbrandon.potter@amd.com int index = 1; 147211383Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 147311383Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 147411383Sbrandon.potter@amd.com 147511383Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 147611383Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 147711383Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 147811383Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 147911383Sbrandon.potter@amd.com 148011383Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 148111383Sbrandon.potter@amd.com 148211383Sbrandon.potter@amd.com return 0; 148311383Sbrandon.potter@amd.com} 148411383Sbrandon.potter@amd.com 148511383Sbrandon.potter@amd.com/// Target clock_getres() function. 148611383Sbrandon.potter@amd.comtemplate <class OS> 148711383Sbrandon.potter@amd.comSyscallReturn 14888324Ssteve.reinhardt@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 14895877Shsul@eecs.umich.edu{ 149010486Stjablin@gmail.com int index = 1; 149110486Stjablin@gmail.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 149211383Sbrandon.potter@amd.com 149311383Sbrandon.potter@amd.com // Set resolution at ns, which is what clock_gettime() returns 149411383Sbrandon.potter@amd.com tp->tv_sec = 0; 149511856Sbrandon.potter@amd.com tp->tv_nsec = 1; 149611624Smichael.lebeane@amd.com 149711856Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 149811856Sbrandon.potter@amd.com 149911856Sbrandon.potter@amd.com return 0; 150011856Sbrandon.potter@amd.com} 150111624Smichael.lebeane@amd.com 150211624Smichael.lebeane@amd.com/// Target gettimeofday() handler. 150311624Smichael.lebeane@amd.comtemplate <class OS> 150411856Sbrandon.potter@amd.comSyscallReturn 150511856Sbrandon.potter@amd.comgettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 150611383Sbrandon.potter@amd.com ThreadContext *tc) 150711856Sbrandon.potter@amd.com{ 1508360SN/A int index = 0; 150911913SBrandon.Potter@amd.com TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 151011383Sbrandon.potter@amd.com 15118600Ssteve.reinhardt@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 151211383Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 151311383Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 151411383Sbrandon.potter@amd.com tp->tv_usec = TheISA::htog(tp->tv_usec); 15158600Ssteve.reinhardt@amd.com 15162544SN/A tp.copyOut(tc->getMemProxy()); 15172544SN/A 151811383Sbrandon.potter@amd.com return 0; 151911383Sbrandon.potter@amd.com} 152011383Sbrandon.potter@amd.com 152111905SBrandon.Potter@amd.com 152211905SBrandon.Potter@amd.com/// Target utimes() handler. 152311905SBrandon.Potter@amd.comtemplate <class OS> 152411905SBrandon.Potter@amd.comSyscallReturn 152511905SBrandon.Potter@amd.comutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 152611905SBrandon.Potter@amd.com ThreadContext *tc) 152711905SBrandon.Potter@amd.com{ 152811383Sbrandon.potter@amd.com std::string path; 152911383Sbrandon.potter@amd.com 153011383Sbrandon.potter@amd.com int index = 0; 153111383Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, 153211383Sbrandon.potter@amd.com process->getSyscallArg(tc, index))) { 153311383Sbrandon.potter@amd.com return -EFAULT; 153411383Sbrandon.potter@amd.com } 153511383Sbrandon.potter@amd.com 153611383Sbrandon.potter@amd.com TypedBufferArg<typename OS::timeval [2]> 153711383Sbrandon.potter@amd.com tp(process->getSyscallArg(tc, index)); 153811383Sbrandon.potter@amd.com tp.copyIn(tc->getMemProxy()); 153911383Sbrandon.potter@amd.com 154011383Sbrandon.potter@amd.com struct timeval hostTimeval[2]; 154111383Sbrandon.potter@amd.com for (int i = 0; i < 2; ++i) 154211383Sbrandon.potter@amd.com { 15438600Ssteve.reinhardt@amd.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15446672Sgblack@eecs.umich.edu hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15458600Ssteve.reinhardt@amd.com } 154611383Sbrandon.potter@amd.com 154711383Sbrandon.potter@amd.com // Adjust path for current working directory 154811383Sbrandon.potter@amd.com path = process->fullPath(path); 15498601Ssteve.reinhardt@amd.com 15502544SN/A int result = utimes(path.c_str(), hostTimeval); 155111383Sbrandon.potter@amd.com 155211383Sbrandon.potter@amd.com if (result < 0) 155311383Sbrandon.potter@amd.com return -errno; 155411383Sbrandon.potter@amd.com 155511383Sbrandon.potter@amd.com return 0; 155611383Sbrandon.potter@amd.com} 155711383Sbrandon.potter@amd.com/// Target getrusage() function. 155811383Sbrandon.potter@amd.comtemplate <class OS> 155911383Sbrandon.potter@amd.comSyscallReturn 156011383Sbrandon.potter@amd.comgetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 156111383Sbrandon.potter@amd.com ThreadContext *tc) 156211383Sbrandon.potter@amd.com{ 156311383Sbrandon.potter@amd.com int index = 0; 156411383Sbrandon.potter@amd.com int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 156511383Sbrandon.potter@amd.com TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 156611383Sbrandon.potter@amd.com 156711383Sbrandon.potter@amd.com rup->ru_utime.tv_sec = 0; 156811383Sbrandon.potter@amd.com rup->ru_utime.tv_usec = 0; 156911383Sbrandon.potter@amd.com rup->ru_stime.tv_sec = 0; 157011383Sbrandon.potter@amd.com rup->ru_stime.tv_usec = 0; 157111383Sbrandon.potter@amd.com rup->ru_maxrss = 0; 157211383Sbrandon.potter@amd.com rup->ru_ixrss = 0; 157311383Sbrandon.potter@amd.com rup->ru_idrss = 0; 157411383Sbrandon.potter@amd.com rup->ru_isrss = 0; 157511383Sbrandon.potter@amd.com rup->ru_minflt = 0; 157611383Sbrandon.potter@amd.com rup->ru_majflt = 0; 157711383Sbrandon.potter@amd.com rup->ru_nswap = 0; 157811383Sbrandon.potter@amd.com rup->ru_inblock = 0; 157911383Sbrandon.potter@amd.com rup->ru_oublock = 0; 158011383Sbrandon.potter@amd.com rup->ru_msgsnd = 0; 158111383Sbrandon.potter@amd.com rup->ru_msgrcv = 0; 158211383Sbrandon.potter@amd.com rup->ru_nsignals = 0; 158311392Sbrandon.potter@amd.com rup->ru_nvcsw = 0; 158411392Sbrandon.potter@amd.com rup->ru_nivcsw = 0; 158511392Sbrandon.potter@amd.com 158611392Sbrandon.potter@amd.com switch (who) { 158711392Sbrandon.potter@amd.com case OS::TGT_RUSAGE_SELF: 158811392Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 158911392Sbrandon.potter@amd.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 159011392Sbrandon.potter@amd.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 159111392Sbrandon.potter@amd.com break; 159211392Sbrandon.potter@amd.com 159311392Sbrandon.potter@amd.com case OS::TGT_RUSAGE_CHILDREN: 159411392Sbrandon.potter@amd.com // do nothing. We have no child processes, so they take no time. 159511392Sbrandon.potter@amd.com break; 159611392Sbrandon.potter@amd.com 159711856Sbrandon.potter@amd.com default: 159811856Sbrandon.potter@amd.com // don't really handle THREAD or CHILDREN, but just warn and 159911856Sbrandon.potter@amd.com // plow ahead 160011392Sbrandon.potter@amd.com warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 160111392Sbrandon.potter@amd.com who); 160211392Sbrandon.potter@amd.com } 160311392Sbrandon.potter@amd.com 160411392Sbrandon.potter@amd.com rup.copyOut(tc->getMemProxy()); 160511392Sbrandon.potter@amd.com 160611392Sbrandon.potter@amd.com return 0; 160711392Sbrandon.potter@amd.com} 160811383Sbrandon.potter@amd.com 160911383Sbrandon.potter@amd.com/// Target times() function. 161011383Sbrandon.potter@amd.comtemplate <class OS> 161111383Sbrandon.potter@amd.comSyscallReturn 161211383Sbrandon.potter@amd.comtimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16131458SN/A ThreadContext *tc) 1614360SN/A{ 1615360SN/A int index = 0; 161611593Santhony.gutierrez@amd.com TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 161711593Santhony.gutierrez@amd.com 161811851Sbrandon.potter@amd.com // Fill in the time structure (in clocks) 161911593Santhony.gutierrez@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 162011593Santhony.gutierrez@amd.com bufp->tms_utime = clocks; 162111593Santhony.gutierrez@amd.com bufp->tms_stime = 0; 162211593Santhony.gutierrez@amd.com bufp->tms_cutime = 0; 162311593Santhony.gutierrez@amd.com bufp->tms_cstime = 0; 162411593Santhony.gutierrez@amd.com 162511593Santhony.gutierrez@amd.com // Convert to host endianness 162611856Sbrandon.potter@amd.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 162711856Sbrandon.potter@amd.com 162811593Santhony.gutierrez@amd.com // Write back 162911856Sbrandon.potter@amd.com bufp.copyOut(tc->getMemProxy()); 163011593Santhony.gutierrez@amd.com 163111593Santhony.gutierrez@amd.com // Return clock ticks since system boot 163211593Santhony.gutierrez@amd.com return clocks; 163311593Santhony.gutierrez@amd.com} 163411594Santhony.gutierrez@amd.com 163511593Santhony.gutierrez@amd.com/// Target time() function. 163611593Santhony.gutierrez@amd.comtemplate <class OS> 163711593Santhony.gutierrez@amd.comSyscallReturn 163811593Santhony.gutierrez@amd.comtimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 163911385Sbrandon.potter@amd.com ThreadContext *tc) 164011385Sbrandon.potter@amd.com{ 164111385Sbrandon.potter@amd.com typename OS::time_t sec, usec; 164211851Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 164311385Sbrandon.potter@amd.com sec += seconds_since_epoch; 164411385Sbrandon.potter@amd.com 164511385Sbrandon.potter@amd.com int index = 0; 164611385Sbrandon.potter@amd.com Addr taddr = (Addr)process->getSyscallArg(tc, index); 164711385Sbrandon.potter@amd.com if (taddr != 0) { 164811385Sbrandon.potter@amd.com typename OS::time_t t = sec; 164911385Sbrandon.potter@amd.com t = TheISA::htog(t); 165011851Sbrandon.potter@amd.com SETranslatingPortProxy &p = tc->getMemProxy(); 165111385Sbrandon.potter@amd.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 165211385Sbrandon.potter@amd.com } 165311385Sbrandon.potter@amd.com return sec; 165411385Sbrandon.potter@amd.com} 1655378SN/A 1656360SN/A 16571450SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 165811851Sbrandon.potter@amd.com