syscall_emul.hh revision 11386
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 482764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 499202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 509202Spalle@lyckegaard.dk defined(__NetBSD__)) 512064SN/A 52360SN/A/// 53360SN/A/// @file syscall_emul.hh 54360SN/A/// 55360SN/A/// This file defines objects used to emulate syscalls from the target 56360SN/A/// application on the host machine. 57360SN/A 581809SN/A#ifdef __CYGWIN32__ 595543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 601809SN/A#endif 6111383Sbrandon.potter@amd.com#include <sys/mman.h> 623113Sgblack@eecs.umich.edu#include <sys/stat.h> 638229Snate@binkert.org#include <sys/time.h> 648229Snate@binkert.org#include <sys/uio.h> 653113Sgblack@eecs.umich.edu#include <fcntl.h> 667075Snate@binkert.org 678229Snate@binkert.org#include <cerrno> 687075Snate@binkert.org#include <string> 69360SN/A 702474SN/A#include "base/chunk_generator.hh" 715543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 722462SN/A#include "base/misc.hh" 731354SN/A#include "base/trace.hh" 746216Snate@binkert.org#include "base/types.hh" 756658Snate@binkert.org#include "config/the_isa.hh" 762474SN/A#include "cpu/base.hh" 772680Sktlim@umich.edu#include "cpu/thread_context.hh" 7811380Salexandru.dutu@amd.com#include "debug/SyscallBase.hh" 798232Snate@binkert.org#include "debug/SyscallVerbose.hh" 808229Snate@binkert.org#include "mem/page_table.hh" 817678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 8210496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 838229Snate@binkert.org#include "sim/process.hh" 8410497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 858766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 866640Svince@csl.cornell.edu#include "sim/system.hh" 87360SN/A 8811380Salexandru.dutu@amd.com// This wrapper macro helps out with readability a bit. FLAGEXT specifies 8911380Salexandru.dutu@amd.com// the verbosity and FMT is the message to be appended to the syscall 9011380Salexandru.dutu@amd.com// header information. The syscall header information contains the cpuid 9111380Salexandru.dutu@amd.com// and thread id. 9211380Salexandru.dutu@amd.com#define DPRINTF_SYSCALL(FLAGEXT, FMT, ...) \ 9311380Salexandru.dutu@amd.com DPRINTFS(Syscall##FLAGEXT, tc->getCpuPtr(), "T%d : syscall " FMT, \ 9411380Salexandru.dutu@amd.com tc->threadId(), __VA_ARGS__) 9511380Salexandru.dutu@amd.com 96360SN/A/// 97360SN/A/// System call descriptor. 98360SN/A/// 99360SN/Aclass SyscallDesc { 100360SN/A 101360SN/A public: 102360SN/A 103378SN/A /// Typedef for target syscall handler functions. 1041450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 1053114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 106360SN/A 1075543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 1085543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 1095543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 11010831Ssteve.reinhardt@amd.com bool warned; //!< Have we warned about unimplemented syscall? 111360SN/A 112360SN/A /// Flag values for controlling syscall behavior. 113360SN/A enum Flags { 114360SN/A /// Don't set return regs according to funcPtr return value. 115360SN/A /// Used for syscalls with non-standard return conventions 1162680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 117360SN/A /// sigreturn). 11810831Ssteve.reinhardt@amd.com SuppressReturnValue = 1, 11910831Ssteve.reinhardt@amd.com WarnOnce = 2 120360SN/A }; 121360SN/A 122360SN/A /// Constructor. 123360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 12410831Ssteve.reinhardt@amd.com : name(_name), funcPtr(_funcPtr), flags(_flags), warned(false) 125360SN/A { 126360SN/A } 127360SN/A 128360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1293114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 13010831Ssteve.reinhardt@amd.com 13110831Ssteve.reinhardt@amd.com /// Is the WarnOnce flag set? 13210831Ssteve.reinhardt@amd.com bool warnOnce() const { return (flags & WarnOnce); } 133360SN/A}; 134360SN/A 135360SN/A 136360SN/A////////////////////////////////////////////////////////////////////// 137360SN/A// 138360SN/A// The following emulation functions are generic enough that they 139360SN/A// don't need to be recompiled for different emulated OS's. They are 140360SN/A// defined in sim/syscall_emul.cc. 141360SN/A// 142360SN/A////////////////////////////////////////////////////////////////////// 143360SN/A 144360SN/A 145378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1461706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1473114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 148378SN/A 149378SN/A/// Handler for unimplemented syscalls that we never intend to 150378SN/A/// implement (signal handling, etc.) and should not affect the correct 151378SN/A/// behavior of the program. Print a warning only if the appropriate 152378SN/A/// trace flag is enabled. Return success to the target program. 1531706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1543114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 155360SN/A 1566109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1571706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1583114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 159378SN/A 1606109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1616109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1626109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1636109Ssanchezd@stanford.edu 164378SN/A/// Target getpagesize() handler. 1651706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1663114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 167378SN/A 1685748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1695748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1705748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 171378SN/A 172378SN/A/// Target close() handler. 1731706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1743114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 175378SN/A 176378SN/A/// Target read() handler. 1771706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1783114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 179378SN/A 180378SN/A/// Target write() handler. 1811706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1823114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 183378SN/A 184378SN/A/// Target lseek() handler. 1851706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1863114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 187378SN/A 1884118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1894118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1904118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1914118Sgblack@eecs.umich.edu 192378SN/A/// Target munmap() handler. 1931706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1943114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 195378SN/A 196378SN/A/// Target gethostname() handler. 1971706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 1983114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 199360SN/A 2005513SMichael.Adler@intel.com/// Target getcwd() handler. 2015513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2025513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2035513SMichael.Adler@intel.com 20410203SAli.Saidi@ARM.com/// Target readlink() handler. 20510203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 20610203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 20710203SAli.Saidi@ARM.com int index = 0); 2085513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2095513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2105513SMichael.Adler@intel.com 211511SN/A/// Target unlink() handler. 21210633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 21310633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc, 21410633Smichaelupton@gmail.com int index); 2151706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2163114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 217511SN/A 2185513SMichael.Adler@intel.com/// Target mkdir() handler. 2195513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2205513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2215513SMichael.Adler@intel.com 222511SN/A/// Target rename() handler. 2231706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2251706SN/A 2261706SN/A 2271706SN/A/// Target truncate() handler. 2281706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2293114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2301706SN/A 2311706SN/A 2321706SN/A/// Target ftruncate() handler. 2331706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2343114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2351706SN/A 236511SN/A 2376703Svince@csl.cornell.edu/// Target truncate64() handler. 2386703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2396703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2406703Svince@csl.cornell.edu 2416685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2426685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2436685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2446685Stjones1@inf.ed.ac.uk 2456685Stjones1@inf.ed.ac.uk 2465513SMichael.Adler@intel.com/// Target umask() handler. 2475513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2485513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2495513SMichael.Adler@intel.com 2505513SMichael.Adler@intel.com 2511999SN/A/// Target chown() handler. 2521999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2533114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2541999SN/A 2551999SN/A 2561999SN/A/// Target fchown() handler. 2571999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2583114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2591999SN/A 2603079Sstever@eecs.umich.edu/// Target dup() handler. 2613079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2623114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2633079Sstever@eecs.umich.edu 2642093SN/A/// Target fnctl() handler. 2652093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2663114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2672093SN/A 2682687Sksewell@umich.edu/// Target fcntl64() handler. 2692687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2703114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2712687Sksewell@umich.edu 2722238SN/A/// Target setuid() handler. 2732238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2743114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2752238SN/A 2762238SN/A/// Target getpid() handler. 2772238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2783114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2792238SN/A 2802238SN/A/// Target getuid() handler. 2812238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2823114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2832238SN/A 2842238SN/A/// Target getgid() handler. 2852238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2863114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2872238SN/A 2882238SN/A/// Target getppid() handler. 2892238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2912238SN/A 2922238SN/A/// Target geteuid() handler. 2932238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2943114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2952238SN/A 2962238SN/A/// Target getegid() handler. 2972238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 2983114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2992238SN/A 3006109Ssanchezd@stanford.edu/// Target clone() handler. 3016109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3026109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3032238SN/A 3049455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3059455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3069455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 30710203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 30810203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 30910203SAli.Saidi@ARM.com int index); 3109455Smitch.hayenga+gem5@gmail.com 3119112Smarc.orr@gmail.com/// Futex system call 3129112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3139112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3149112Smarc.orr@gmail.comtemplate <class OS> 3159112Smarc.orr@gmail.comSyscallReturn 3169112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3179112Smarc.orr@gmail.com ThreadContext *tc) 3189112Smarc.orr@gmail.com{ 3199112Smarc.orr@gmail.com int index_uaddr = 0; 3209112Smarc.orr@gmail.com int index_op = 1; 3219112Smarc.orr@gmail.com int index_val = 2; 3229112Smarc.orr@gmail.com int index_timeout = 3; 3239112Smarc.orr@gmail.com 3249112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3259112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3269112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3279112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3289112Smarc.orr@gmail.com 3299112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3309112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3319112Smarc.orr@gmail.com 3329112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3339112Smarc.orr@gmail.com uaddr, op, val); 3349112Smarc.orr@gmail.com 3359238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3369112Smarc.orr@gmail.com 3379112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3389112Smarc.orr@gmail.com if (timeout != 0) { 3399112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3409112Smarc.orr@gmail.com "we'll wait indefinitely"); 3419112Smarc.orr@gmail.com } 3429112Smarc.orr@gmail.com 3439112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3449112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3459112Smarc.orr@gmail.com int mem_val = *((int *)buf); 34611367Sandreas.hansson@arm.com delete[] buf; 3479112Smarc.orr@gmail.com 34811321Ssteve.reinhardt@amd.com if (val != mem_val) { 3499112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3509112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3519112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3529112Smarc.orr@gmail.com } 3539112Smarc.orr@gmail.com 3549112Smarc.orr@gmail.com // Queue the thread context 3559112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3569112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3579112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3589112Smarc.orr@gmail.com } else { 3599112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3609112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3619112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3629112Smarc.orr@gmail.com } 3639112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3649112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3659112Smarc.orr@gmail.com "thread context\n"); 3669112Smarc.orr@gmail.com tc->suspend(); 3679112Smarc.orr@gmail.com return 0; 3689112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3699112Smarc.orr@gmail.com int wokenUp = 0; 3709112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3719112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3729112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3739112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3749112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3759112Smarc.orr@gmail.com tcWaitList->pop_front(); 3769112Smarc.orr@gmail.com wokenUp++; 3779112Smarc.orr@gmail.com } 37811321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3799112Smarc.orr@gmail.com futex_map.erase(uaddr); 3809112Smarc.orr@gmail.com delete tcWaitList; 3819112Smarc.orr@gmail.com } 3829112Smarc.orr@gmail.com } 3839112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3849112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3859112Smarc.orr@gmail.com return wokenUp; 3869112Smarc.orr@gmail.com } else { 3879238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3889112Smarc.orr@gmail.com return 0; 3899112Smarc.orr@gmail.com } 3909112Smarc.orr@gmail.com 3919112Smarc.orr@gmail.com} 3929112Smarc.orr@gmail.com 3932238SN/A 3942238SN/A/// Pseudo Funcs - These functions use a different return convension, 3952238SN/A/// returning a second value in a register other than the normal return register 3962238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3973114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3982238SN/A 3992238SN/A/// Target getpidPseudo() handler. 4002238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4013114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4022238SN/A 4032238SN/A/// Target getuidPseudo() handler. 4042238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 4053114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4062238SN/A 4072238SN/A/// Target getgidPseudo() handler. 4082238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4093114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4102238SN/A 4112238SN/A 4121354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4131354SN/Aconst int one_million = 1000000; 41410796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 41510796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 4161354SN/A 4171354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4181354SN/A/// by my reckoning. We want to keep this a constant (not use the 4191354SN/A/// real-world time) to keep simulations repeatable. 4201354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4211354SN/A 4221354SN/A/// Helper function to convert current elapsed time to seconds and 4231354SN/A/// microseconds. 4241354SN/Atemplate <class T1, class T2> 4251354SN/Avoid 42610796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 4271354SN/A{ 42810796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 4291354SN/A sec = elapsed_usecs / one_million; 4301354SN/A usec = elapsed_usecs % one_million; 4311354SN/A} 4321354SN/A 43310796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 43410796Sbrandon.potter@amd.com/// nanoseconds. 43510796Sbrandon.potter@amd.comtemplate <class T1, class T2> 43610796Sbrandon.potter@amd.comvoid 43710796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 43810796Sbrandon.potter@amd.com{ 43910796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 44010796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 44110796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 44210796Sbrandon.potter@amd.com} 44310796Sbrandon.potter@amd.com 444360SN/A////////////////////////////////////////////////////////////////////// 445360SN/A// 446360SN/A// The following emulation functions are generic, but need to be 447360SN/A// templated to account for differences in types, constants, etc. 448360SN/A// 449360SN/A////////////////////////////////////////////////////////////////////// 450360SN/A 4513113Sgblack@eecs.umich.edu#if NO_STAT64 4523113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4533113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4543113Sgblack@eecs.umich.edu#else 4553113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4563113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4573113Sgblack@eecs.umich.edu#endif 4583113Sgblack@eecs.umich.edu 4593113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4603113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4613113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4623113Sgblack@eecs.umich.edu 4633113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4643113Sgblack@eecs.umich.edustatic void 4653113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4663113Sgblack@eecs.umich.edu{ 4674189Sgblack@eecs.umich.edu using namespace TheISA; 4684189Sgblack@eecs.umich.edu 4693113Sgblack@eecs.umich.edu if (fakeTTY) 4703113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4713113Sgblack@eecs.umich.edu else 4723113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4738737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4743113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4758737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4763277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4775515SMichael.Adler@intel.com if (fakeTTY) { 4785515SMichael.Adler@intel.com // Claim to be a character device 4795515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4805515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4815515SMichael.Adler@intel.com } 4828737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4833277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4848737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4853277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4868737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4873277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4888737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4893113Sgblack@eecs.umich.edu if (fakeTTY) 4903113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4913113Sgblack@eecs.umich.edu else 4923113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4938737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4943113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4958737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4963114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4978737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4983114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4998737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5003114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5018737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5024061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5034061Sgblack@eecs.umich.edu // consistently across different hosts. 5044061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5058737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5063113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5078737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5083113Sgblack@eecs.umich.edu} 5093113Sgblack@eecs.umich.edu 5103113Sgblack@eecs.umich.edu// Same for stat64 5113113Sgblack@eecs.umich.edu 5123113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5133113Sgblack@eecs.umich.edustatic void 5143113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5153113Sgblack@eecs.umich.edu{ 5164189Sgblack@eecs.umich.edu using namespace TheISA; 5174189Sgblack@eecs.umich.edu 5183113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5193113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5203113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5218737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5223113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5238737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5243113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5258737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5263113Sgblack@eecs.umich.edu#else 5273113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5283113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5293113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5303113Sgblack@eecs.umich.edu#endif 5313113Sgblack@eecs.umich.edu} 5323113Sgblack@eecs.umich.edu 5333113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5343113Sgblack@eecs.umich.edutemplate<class OS> 5353113Sgblack@eecs.umich.edustatic void 5368852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5373113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5383113Sgblack@eecs.umich.edu{ 5393113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5403113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5413113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5423113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5433113Sgblack@eecs.umich.edu} 5443113Sgblack@eecs.umich.edu 5453113Sgblack@eecs.umich.edutemplate<class OS> 5463113Sgblack@eecs.umich.edustatic void 5478852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5483113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5493113Sgblack@eecs.umich.edu{ 5503113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5513113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5526686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5533113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5543113Sgblack@eecs.umich.edu} 5553113Sgblack@eecs.umich.edu 556378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 557378SN/A/// only to find out if their stdout is a tty, to determine whether to 5589141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5599141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 560360SN/Atemplate <class OS> 5611450SN/ASyscallReturn 5623114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5632680Sktlim@umich.edu ThreadContext *tc) 564360SN/A{ 5656701Sgblack@eecs.umich.edu int index = 0; 56610930Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 5676701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 568360SN/A 56910930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 570360SN/A 57110932Sbrandon.potter@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 57210496Ssteve.reinhardt@amd.com 57310930Sbrandon.potter@amd.com if (fde == NULL) { 574360SN/A // doesn't map to any simulator fd: not a valid target fd 5751458SN/A return -EBADF; 576360SN/A } 577360SN/A 57810930Sbrandon.potter@amd.com if (fde->driver != NULL) { 57910930Sbrandon.potter@amd.com return fde->driver->ioctl(process, tc, req); 58010496Ssteve.reinhardt@amd.com } 58110496Ssteve.reinhardt@amd.com 5829141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 5831458SN/A return -ENOTTY; 5849141Smarc.orr@gmail.com } 585360SN/A 5869141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 58710930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 5889141Smarc.orr@gmail.com return -ENOTTY; 589360SN/A} 590360SN/A 591360SN/Atemplate <class OS> 59210027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 5933114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 59410027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 595360SN/A{ 596360SN/A std::string path; 597360SN/A 5988852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 5996701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6001458SN/A return -EFAULT; 601360SN/A 6026701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6036701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 604360SN/A int hostFlags = 0; 605360SN/A 606360SN/A // translate open flags 607360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 608360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 609360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 610360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 611360SN/A } 612360SN/A } 613360SN/A 614360SN/A // any target flags left? 615360SN/A if (tgtFlags != 0) 6161706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 617360SN/A 618360SN/A#ifdef __CYGWIN32__ 619360SN/A hostFlags |= O_BINARY; 620360SN/A#endif 621360SN/A 6223669Sbinkertn@umich.edu // Adjust path for current working directory 6233669Sbinkertn@umich.edu path = process->fullPath(path); 6243669Sbinkertn@umich.edu 6251706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6261706SN/A 62710496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 62810496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 62910496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 63010496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 63110496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 63210496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 63310496Ssteve.reinhardt@amd.com return -ENOENT; 63410496Ssteve.reinhardt@amd.com } 63510496Ssteve.reinhardt@amd.com 63610496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 63710496Ssteve.reinhardt@amd.com if (drv != NULL) { 63810496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 63910496Ssteve.reinhardt@amd.com // process if necessary. 64010496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 64110496Ssteve.reinhardt@amd.com } 64210496Ssteve.reinhardt@amd.com 64310496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 64410496Ssteve.reinhardt@amd.com // /dev/zero 64510496Ssteve.reinhardt@amd.com } 64610496Ssteve.reinhardt@amd.com 6475795Ssaidi@eecs.umich.edu int fd; 6489143Ssteve.reinhardt@amd.com int local_errno; 6499142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6509142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6519143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6525795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6539143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6545795Ssaidi@eecs.umich.edu } else { 6555795Ssaidi@eecs.umich.edu // open the file 6565795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6579143Ssteve.reinhardt@amd.com local_errno = errno; 6585795Ssaidi@eecs.umich.edu } 659360SN/A 6609143Ssteve.reinhardt@amd.com if (fd == -1) 6619143Ssteve.reinhardt@amd.com return -local_errno; 6629143Ssteve.reinhardt@amd.com 66310932Sbrandon.potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 664360SN/A} 665360SN/A 66610027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 66710027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 66810027SChris.Adeniyi-Jones@arm.comSyscallReturn 66910027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67010027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 67110027SChris.Adeniyi-Jones@arm.com{ 67210027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 67310027SChris.Adeniyi-Jones@arm.com} 67410027SChris.Adeniyi-Jones@arm.com 67510027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 67610027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 67710027SChris.Adeniyi-Jones@arm.comSyscallReturn 67810027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67910027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 68010027SChris.Adeniyi-Jones@arm.com{ 68110027SChris.Adeniyi-Jones@arm.com int index = 0; 68210027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 68310027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 68410027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 68510027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 68610027SChris.Adeniyi-Jones@arm.com} 68710027SChris.Adeniyi-Jones@arm.com 68810633Smichaelupton@gmail.com/// Target unlinkat() handler. 68910633Smichaelupton@gmail.comtemplate <class OS> 69010633Smichaelupton@gmail.comSyscallReturn 69110633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69210633Smichaelupton@gmail.com ThreadContext *tc) 69310633Smichaelupton@gmail.com{ 69410633Smichaelupton@gmail.com int index = 0; 69510633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 69610633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 69710633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 69810633Smichaelupton@gmail.com 69910633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 70010633Smichaelupton@gmail.com} 70110633Smichaelupton@gmail.com 70210203SAli.Saidi@ARM.com/// Target facessat() handler 70310203SAli.Saidi@ARM.comtemplate <class OS> 70410203SAli.Saidi@ARM.comSyscallReturn 70510203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70610203SAli.Saidi@ARM.com ThreadContext *tc) 70710203SAli.Saidi@ARM.com{ 70810203SAli.Saidi@ARM.com int index = 0; 70910203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 71010203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 71110203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 71210203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 71310203SAli.Saidi@ARM.com} 71410203SAli.Saidi@ARM.com 71510203SAli.Saidi@ARM.com/// Target readlinkat() handler 71610203SAli.Saidi@ARM.comtemplate <class OS> 71710203SAli.Saidi@ARM.comSyscallReturn 71810203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 71910203SAli.Saidi@ARM.com ThreadContext *tc) 72010203SAli.Saidi@ARM.com{ 72110203SAli.Saidi@ARM.com int index = 0; 72210203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 72310203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 72410203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 72510203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 72610203SAli.Saidi@ARM.com} 72710203SAli.Saidi@ARM.com 72810850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 72910850SGiacomo.Gabrielli@arm.comtemplate <class OS> 73010850SGiacomo.Gabrielli@arm.comSyscallReturn 73110850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 73210850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 73310850SGiacomo.Gabrielli@arm.com{ 73410850SGiacomo.Gabrielli@arm.com int index = 0; 73510850SGiacomo.Gabrielli@arm.com 73610850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 73710850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 73810850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 73910850SGiacomo.Gabrielli@arm.com 74010850SGiacomo.Gabrielli@arm.com std::string old_name; 74110850SGiacomo.Gabrielli@arm.com 74210850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 74310850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 74410850SGiacomo.Gabrielli@arm.com return -EFAULT; 74510850SGiacomo.Gabrielli@arm.com 74610850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 74710850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 74810850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 74910850SGiacomo.Gabrielli@arm.com 75010850SGiacomo.Gabrielli@arm.com std::string new_name; 75110850SGiacomo.Gabrielli@arm.com 75210850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 75310850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 75410850SGiacomo.Gabrielli@arm.com return -EFAULT; 75510850SGiacomo.Gabrielli@arm.com 75610850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 75710850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 75810850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 75910850SGiacomo.Gabrielli@arm.com 76010850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 76110850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 76210850SGiacomo.Gabrielli@arm.com} 76310850SGiacomo.Gabrielli@arm.com 7646640Svince@csl.cornell.edu/// Target sysinfo() handler. 7656640Svince@csl.cornell.edutemplate <class OS> 7666640Svince@csl.cornell.eduSyscallReturn 7676640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7686640Svince@csl.cornell.edu ThreadContext *tc) 7696640Svince@csl.cornell.edu{ 7706640Svince@csl.cornell.edu 7716701Sgblack@eecs.umich.edu int index = 0; 7726701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 77310793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 7746640Svince@csl.cornell.edu 7756701Sgblack@eecs.umich.edu sysinfo->uptime=seconds_since_epoch; 7766701Sgblack@eecs.umich.edu sysinfo->totalram=process->system->memSize(); 7776640Svince@csl.cornell.edu 7788706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7796640Svince@csl.cornell.edu 7806701Sgblack@eecs.umich.edu return 0; 7816640Svince@csl.cornell.edu} 782360SN/A 7831999SN/A/// Target chmod() handler. 7841999SN/Atemplate <class OS> 7851999SN/ASyscallReturn 7863114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7872680Sktlim@umich.edu ThreadContext *tc) 7881999SN/A{ 7891999SN/A std::string path; 7901999SN/A 7916701Sgblack@eecs.umich.edu int index = 0; 7928852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7936701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7941999SN/A return -EFAULT; 7956701Sgblack@eecs.umich.edu } 7961999SN/A 7976701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7981999SN/A mode_t hostMode = 0; 7991999SN/A 8001999SN/A // XXX translate mode flags via OS::something??? 8011999SN/A hostMode = mode; 8021999SN/A 8033669Sbinkertn@umich.edu // Adjust path for current working directory 8043669Sbinkertn@umich.edu path = process->fullPath(path); 8053669Sbinkertn@umich.edu 8061999SN/A // do the chmod 8071999SN/A int result = chmod(path.c_str(), hostMode); 8081999SN/A if (result < 0) 8092218SN/A return -errno; 8101999SN/A 8111999SN/A return 0; 8121999SN/A} 8131999SN/A 8141999SN/A 8151999SN/A/// Target fchmod() handler. 8161999SN/Atemplate <class OS> 8171999SN/ASyscallReturn 8183114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8192680Sktlim@umich.edu ThreadContext *tc) 8201999SN/A{ 8216701Sgblack@eecs.umich.edu int index = 0; 82210931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 82310931Sbrandon.potter@amd.com uint32_t mode = process->getSyscallArg(tc, index); 82410931Sbrandon.potter@amd.com 82510932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 82610931Sbrandon.potter@amd.com if (sim_fd < 0) 8271999SN/A return -EBADF; 8281999SN/A 8291999SN/A mode_t hostMode = 0; 8301999SN/A 8311999SN/A // XXX translate mode flags via OS::someting??? 8321999SN/A hostMode = mode; 8331999SN/A 8341999SN/A // do the fchmod 83510931Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 8361999SN/A if (result < 0) 8372218SN/A return -errno; 8381999SN/A 8391999SN/A return 0; 8401999SN/A} 8411999SN/A 8425877Shsul@eecs.umich.edu/// Target mremap() handler. 8435877Shsul@eecs.umich.edutemplate <class OS> 8445877Shsul@eecs.umich.eduSyscallReturn 8455877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8465877Shsul@eecs.umich.edu{ 8476701Sgblack@eecs.umich.edu int index = 0; 8486701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8496701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8506701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8516701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 85210027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 85310027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 85410027SChris.Adeniyi-Jones@arm.com 85510027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 85610027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8575877Shsul@eecs.umich.edu 85810318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 85910318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8605877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8615877Shsul@eecs.umich.edu return -EINVAL; 8625877Shsul@eecs.umich.edu } 8635877Shsul@eecs.umich.edu 86410486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 86510486Stjablin@gmail.com 8665877Shsul@eecs.umich.edu if (new_length > old_length) { 86710027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 86810027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8695877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8708601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8715877Shsul@eecs.umich.edu process->mmap_end += diff; 8725877Shsul@eecs.umich.edu return start; 8735877Shsul@eecs.umich.edu } else { 87410027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8755877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8765877Shsul@eecs.umich.edu return -ENOMEM; 8775877Shsul@eecs.umich.edu } else { 87810027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 87910027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 88010027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 88110027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 88210027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 88310027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8845877Shsul@eecs.umich.edu // add on the remaining unallocated pages 88510027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 88610027SChris.Adeniyi-Jones@arm.com new_length - old_length, 88710027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 88810027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 88910027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 89010027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 89110027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 89210027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 89310027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 89410027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 89510027SChris.Adeniyi-Jones@arm.com } 89610027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 89710027SChris.Adeniyi-Jones@arm.com return new_start; 8985877Shsul@eecs.umich.edu } 8995877Shsul@eecs.umich.edu } 9005877Shsul@eecs.umich.edu } else { 90110027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 90210027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 9038601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 90410027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 9055877Shsul@eecs.umich.edu } 9065877Shsul@eecs.umich.edu} 9071999SN/A 908378SN/A/// Target stat() handler. 909360SN/Atemplate <class OS> 9101450SN/ASyscallReturn 9113114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9122680Sktlim@umich.edu ThreadContext *tc) 913360SN/A{ 914360SN/A std::string path; 915360SN/A 9166701Sgblack@eecs.umich.edu int index = 0; 9178852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9186701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9196701Sgblack@eecs.umich.edu return -EFAULT; 9206701Sgblack@eecs.umich.edu } 9216701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 922360SN/A 9233669Sbinkertn@umich.edu // Adjust path for current working directory 9243669Sbinkertn@umich.edu path = process->fullPath(path); 9253669Sbinkertn@umich.edu 926360SN/A struct stat hostBuf; 927360SN/A int result = stat(path.c_str(), &hostBuf); 928360SN/A 929360SN/A if (result < 0) 9302218SN/A return -errno; 931360SN/A 9328706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 933360SN/A 9341458SN/A return 0; 935360SN/A} 936360SN/A 937360SN/A 9385074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9395074Ssaidi@eecs.umich.edutemplate <class OS> 9405074Ssaidi@eecs.umich.eduSyscallReturn 9415074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9425074Ssaidi@eecs.umich.edu ThreadContext *tc) 9435074Ssaidi@eecs.umich.edu{ 9445074Ssaidi@eecs.umich.edu std::string path; 9455074Ssaidi@eecs.umich.edu 9466701Sgblack@eecs.umich.edu int index = 0; 9478852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9486701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9495074Ssaidi@eecs.umich.edu return -EFAULT; 9506701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9515074Ssaidi@eecs.umich.edu 9525074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9535074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9545074Ssaidi@eecs.umich.edu 9555208Ssaidi@eecs.umich.edu#if NO_STAT64 9565208Ssaidi@eecs.umich.edu struct stat hostBuf; 9575208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9585208Ssaidi@eecs.umich.edu#else 9595074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9605074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9615208Ssaidi@eecs.umich.edu#endif 9625074Ssaidi@eecs.umich.edu 9635074Ssaidi@eecs.umich.edu if (result < 0) 9645074Ssaidi@eecs.umich.edu return -errno; 9655074Ssaidi@eecs.umich.edu 9668706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9675074Ssaidi@eecs.umich.edu 9685074Ssaidi@eecs.umich.edu return 0; 9695074Ssaidi@eecs.umich.edu} 9705074Ssaidi@eecs.umich.edu 9715074Ssaidi@eecs.umich.edu 97210027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 97310027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 97410027SChris.Adeniyi-Jones@arm.comSyscallReturn 97510027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 97610027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 97710027SChris.Adeniyi-Jones@arm.com{ 97810027SChris.Adeniyi-Jones@arm.com int index = 0; 97910027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 98010027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 98110793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 98210027SChris.Adeniyi-Jones@arm.com 98310027SChris.Adeniyi-Jones@arm.com std::string path; 98410027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 98510027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 98610027SChris.Adeniyi-Jones@arm.com return -EFAULT; 98710027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 98810027SChris.Adeniyi-Jones@arm.com 98910027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 99010027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 99110027SChris.Adeniyi-Jones@arm.com 99210027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 99310027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 99410027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 99510027SChris.Adeniyi-Jones@arm.com#else 99610027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 99710027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 99810027SChris.Adeniyi-Jones@arm.com#endif 99910027SChris.Adeniyi-Jones@arm.com 100010027SChris.Adeniyi-Jones@arm.com if (result < 0) 100110027SChris.Adeniyi-Jones@arm.com return -errno; 100210027SChris.Adeniyi-Jones@arm.com 100310027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 100410027SChris.Adeniyi-Jones@arm.com 100510027SChris.Adeniyi-Jones@arm.com return 0; 100610027SChris.Adeniyi-Jones@arm.com} 100710027SChris.Adeniyi-Jones@arm.com 100810027SChris.Adeniyi-Jones@arm.com 10091999SN/A/// Target fstat64() handler. 10101999SN/Atemplate <class OS> 10111999SN/ASyscallReturn 10123114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10132680Sktlim@umich.edu ThreadContext *tc) 10141999SN/A{ 10156701Sgblack@eecs.umich.edu int index = 0; 101610931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 10176701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 101810931Sbrandon.potter@amd.com 101910932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 102010931Sbrandon.potter@amd.com if (sim_fd < 0) 10211999SN/A return -EBADF; 10221999SN/A 10232764Sstever@eecs.umich.edu#if NO_STAT64 10242064SN/A struct stat hostBuf; 102510931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 10262064SN/A#else 10272064SN/A struct stat64 hostBuf; 102810931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 10292064SN/A#endif 10301999SN/A 10311999SN/A if (result < 0) 10322218SN/A return -errno; 10331999SN/A 103410931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10351999SN/A 10361999SN/A return 0; 10371999SN/A} 10381999SN/A 10391999SN/A 1040378SN/A/// Target lstat() handler. 1041360SN/Atemplate <class OS> 10421450SN/ASyscallReturn 10433114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10442680Sktlim@umich.edu ThreadContext *tc) 1045360SN/A{ 1046360SN/A std::string path; 1047360SN/A 10486701Sgblack@eecs.umich.edu int index = 0; 10498852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10506701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10516701Sgblack@eecs.umich.edu return -EFAULT; 10526701Sgblack@eecs.umich.edu } 10536701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1054360SN/A 10553669Sbinkertn@umich.edu // Adjust path for current working directory 10563669Sbinkertn@umich.edu path = process->fullPath(path); 10573669Sbinkertn@umich.edu 1058360SN/A struct stat hostBuf; 1059360SN/A int result = lstat(path.c_str(), &hostBuf); 1060360SN/A 1061360SN/A if (result < 0) 10621458SN/A return -errno; 1063360SN/A 10648706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1065360SN/A 10661458SN/A return 0; 1067360SN/A} 1068360SN/A 10691999SN/A/// Target lstat64() handler. 10701999SN/Atemplate <class OS> 10711999SN/ASyscallReturn 10723114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10732680Sktlim@umich.edu ThreadContext *tc) 10741999SN/A{ 10751999SN/A std::string path; 10761999SN/A 10776701Sgblack@eecs.umich.edu int index = 0; 10788852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10796701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10806701Sgblack@eecs.umich.edu return -EFAULT; 10816701Sgblack@eecs.umich.edu } 10826701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10831999SN/A 10843669Sbinkertn@umich.edu // Adjust path for current working directory 10853669Sbinkertn@umich.edu path = process->fullPath(path); 10863669Sbinkertn@umich.edu 10872764Sstever@eecs.umich.edu#if NO_STAT64 10882064SN/A struct stat hostBuf; 10892064SN/A int result = lstat(path.c_str(), &hostBuf); 10902064SN/A#else 10911999SN/A struct stat64 hostBuf; 10921999SN/A int result = lstat64(path.c_str(), &hostBuf); 10932064SN/A#endif 10941999SN/A 10951999SN/A if (result < 0) 10961999SN/A return -errno; 10971999SN/A 10988706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10991999SN/A 11001999SN/A return 0; 11011999SN/A} 11021999SN/A 1103378SN/A/// Target fstat() handler. 1104360SN/Atemplate <class OS> 11051450SN/ASyscallReturn 11063114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11072680Sktlim@umich.edu ThreadContext *tc) 1108360SN/A{ 11096701Sgblack@eecs.umich.edu int index = 0; 111010931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11116701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1112360SN/A 111311380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1114360SN/A 111510932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 111610931Sbrandon.potter@amd.com if (sim_fd < 0) 11171458SN/A return -EBADF; 1118360SN/A 1119360SN/A struct stat hostBuf; 112010931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1121360SN/A 1122360SN/A if (result < 0) 11231458SN/A return -errno; 1124360SN/A 112510931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11262021SN/A 11271458SN/A return 0; 1128360SN/A} 1129360SN/A 1130360SN/A 11311706SN/A/// Target statfs() handler. 11321706SN/Atemplate <class OS> 11331706SN/ASyscallReturn 11343114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11352680Sktlim@umich.edu ThreadContext *tc) 11361706SN/A{ 11371706SN/A std::string path; 11381706SN/A 11396701Sgblack@eecs.umich.edu int index = 0; 11408852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11416701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11426701Sgblack@eecs.umich.edu return -EFAULT; 11436701Sgblack@eecs.umich.edu } 11446701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11451706SN/A 11463669Sbinkertn@umich.edu // Adjust path for current working directory 11473669Sbinkertn@umich.edu path = process->fullPath(path); 11483669Sbinkertn@umich.edu 11491706SN/A struct statfs hostBuf; 11501706SN/A int result = statfs(path.c_str(), &hostBuf); 11511706SN/A 11521706SN/A if (result < 0) 11532218SN/A return -errno; 11541706SN/A 11558706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11561706SN/A 11571706SN/A return 0; 11581706SN/A} 11591706SN/A 11601706SN/A 11611706SN/A/// Target fstatfs() handler. 11621706SN/Atemplate <class OS> 11631706SN/ASyscallReturn 11643114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11652680Sktlim@umich.edu ThreadContext *tc) 11661706SN/A{ 11676701Sgblack@eecs.umich.edu int index = 0; 116810931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11696701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11701706SN/A 117110932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 117210931Sbrandon.potter@amd.com if (sim_fd < 0) 11731706SN/A return -EBADF; 11741706SN/A 11751706SN/A struct statfs hostBuf; 117610931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 11771706SN/A 11781706SN/A if (result < 0) 11792218SN/A return -errno; 11801706SN/A 11818706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11821706SN/A 11831706SN/A return 0; 11841706SN/A} 11851706SN/A 11861706SN/A 11871999SN/A/// Target writev() handler. 11881999SN/Atemplate <class OS> 11891999SN/ASyscallReturn 11903114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11912680Sktlim@umich.edu ThreadContext *tc) 11921999SN/A{ 11936701Sgblack@eecs.umich.edu int index = 0; 119410931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 119510931Sbrandon.potter@amd.com 119610932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 119710931Sbrandon.potter@amd.com if (sim_fd < 0) 11981999SN/A return -EBADF; 11991999SN/A 12008852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 12016701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 12026701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 12031999SN/A struct iovec hiov[count]; 12046227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 12051999SN/A typename OS::tgt_iovec tiov; 12062461SN/A 12078852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12088852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12098737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12101999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 12118852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12128852Sandreas.hansson@arm.com hiov[i].iov_len); 12131999SN/A } 12141999SN/A 121510931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 12161999SN/A 12176227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12181999SN/A delete [] (char *)hiov[i].iov_base; 12191999SN/A 12201999SN/A if (result < 0) 12212218SN/A return -errno; 12221999SN/A 122310629Sjthestness@gmail.com return result; 12241999SN/A} 12251999SN/A 122611385Sbrandon.potter@amd.com/// Real mmap handler. 1227360SN/Atemplate <class OS> 12281450SN/ASyscallReturn 122911385Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 123011385Sbrandon.potter@amd.com bool is_mmap2) 1231360SN/A{ 12326701Sgblack@eecs.umich.edu int index = 0; 12336701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12346701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 123511383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 123611383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12378324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 123810486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1239360SN/A 124011385Sbrandon.potter@amd.com if (is_mmap2) 124111385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12429008Sgblack@eecs.umich.edu 124311383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 124411383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 124511383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 124611383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 124711383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 124811383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 124911383Sbrandon.potter@amd.com !length) { 125011383Sbrandon.potter@amd.com return -EINVAL; 125111383Sbrandon.potter@amd.com } 12528324Ssteve.reinhardt@amd.com 125311383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 125411383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 125511383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 125611383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 125711383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 125811383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 125911383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 126011383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 126111383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 126211383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 126311383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 126411383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 126511383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 126611383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 126711383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 126811383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 126911383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 127011383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 127111383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 127211383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 127311383Sbrandon.potter@amd.com // than we currently maintain. 127411383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 127511383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 127611383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 12778324Ssteve.reinhardt@amd.com } 12785877Shsul@eecs.umich.edu 127910486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 128010486Stjablin@gmail.com 128111383Sbrandon.potter@amd.com int sim_fd = -1; 128211383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 128311383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 128411383Sbrandon.potter@amd.com sim_fd = p->getSimFD(tgt_fd); 128511383Sbrandon.potter@amd.com if (sim_fd < 0) 128611383Sbrandon.potter@amd.com return -EBADF; 1287360SN/A 128811383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 128911383Sbrandon.potter@amd.com sim_fd, offset); 12908600Ssteve.reinhardt@amd.com 129111383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 129211383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 129311383Sbrandon.potter@amd.com return -errno; 12948600Ssteve.reinhardt@amd.com } 12952544SN/A } 12962544SN/A 129711383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 129811383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 129911383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 130011386Ssteve.reinhardt@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 130111386Ssteve.reinhardt@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 130211383Sbrandon.potter@amd.com } 130311383Sbrandon.potter@amd.com 130411383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 130511383Sbrandon.potter@amd.com start, start + length - 1); 130611383Sbrandon.potter@amd.com 130711383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 130811383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 130911383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 131011383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 131111383Sbrandon.potter@amd.com if (clobber) { 131211383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 131311383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 131411383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 131511383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 131611383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13178600Ssteve.reinhardt@amd.com } 13186672Sgblack@eecs.umich.edu } 13198600Ssteve.reinhardt@amd.com 132011383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 132111383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 132211383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 13238601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 13242544SN/A 132511383Sbrandon.potter@amd.com // Transfer content into target address space. 132611383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 132711383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 132811383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 132911383Sbrandon.potter@amd.com // with something like: 133011383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 133111383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 133211383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 133311383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 133411383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 133511383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 133611383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 133711383Sbrandon.potter@amd.com } else { 133811383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 133911383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 134011383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 134111383Sbrandon.potter@amd.com // the host into the target address space. 134211383Sbrandon.potter@amd.com struct stat file_stat; 134311383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 134411383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 134511383Sbrandon.potter@amd.com 134611383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 134711383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 134811383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 134911383Sbrandon.potter@amd.com // on the specified offset into the file. 135011383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 135111383Sbrandon.potter@amd.com length); 135211383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 135311383Sbrandon.potter@amd.com 135411383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 135511383Sbrandon.potter@amd.com munmap(pmap, length); 135611383Sbrandon.potter@amd.com 135711383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 135811383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 135911383Sbrandon.potter@amd.com // execution (hopefully). 136011383Sbrandon.potter@amd.com } 136111383Sbrandon.potter@amd.com 13621458SN/A return start; 1363360SN/A} 1364360SN/A 136511385Sbrandon.potter@amd.com/// Target mmap() handler. 136611385Sbrandon.potter@amd.comtemplate <class OS> 136711385Sbrandon.potter@amd.comSyscallReturn 136811385Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 136911385Sbrandon.potter@amd.com{ 137011385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 137111385Sbrandon.potter@amd.com} 137211385Sbrandon.potter@amd.com 137311385Sbrandon.potter@amd.com/// Target mmap2() handler. 137411385Sbrandon.potter@amd.comtemplate <class OS> 137511385Sbrandon.potter@amd.comSyscallReturn 137611385Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 137711385Sbrandon.potter@amd.com{ 137811385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 137911385Sbrandon.potter@amd.com} 138011385Sbrandon.potter@amd.com 1381378SN/A/// Target getrlimit() handler. 1382360SN/Atemplate <class OS> 13831450SN/ASyscallReturn 13843114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13852680Sktlim@umich.edu ThreadContext *tc) 1386360SN/A{ 13876701Sgblack@eecs.umich.edu int index = 0; 13886701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 13896701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1390360SN/A 1391360SN/A switch (resource) { 13922064SN/A case OS::TGT_RLIMIT_STACK: 13935877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 13942064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 13958737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 13968737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 13972064SN/A break; 1398360SN/A 13995877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 14005877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 14015877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14028737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14038737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14045877Shsul@eecs.umich.edu break; 14055877Shsul@eecs.umich.edu 14062064SN/A default: 140710794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 140810794Sbrandon.potter@amd.com return -EINVAL; 14092064SN/A break; 1410360SN/A } 1411360SN/A 14128706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 14131458SN/A return 0; 1414360SN/A} 1415360SN/A 141610796Sbrandon.potter@amd.com/// Target clock_gettime() function. 141710796Sbrandon.potter@amd.comtemplate <class OS> 141810796Sbrandon.potter@amd.comSyscallReturn 141910796Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 142010796Sbrandon.potter@amd.com{ 142110796Sbrandon.potter@amd.com int index = 1; 142210796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 142310796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 142410796Sbrandon.potter@amd.com 142510796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 142610796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 142710796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 142810796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 142910796Sbrandon.potter@amd.com 143010796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 143110796Sbrandon.potter@amd.com 143210796Sbrandon.potter@amd.com return 0; 143310796Sbrandon.potter@amd.com} 143410796Sbrandon.potter@amd.com 143511337SMichael.Lebeane@amd.com/// Target clock_getres() function. 143611337SMichael.Lebeane@amd.comtemplate <class OS> 143711337SMichael.Lebeane@amd.comSyscallReturn 143811337SMichael.Lebeane@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 143911337SMichael.Lebeane@amd.com{ 144011337SMichael.Lebeane@amd.com int index = 1; 144111337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 144211337SMichael.Lebeane@amd.com 144311337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 144411337SMichael.Lebeane@amd.com tp->tv_sec = 0; 144511337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 144611337SMichael.Lebeane@amd.com 144711337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 144811337SMichael.Lebeane@amd.com 144911337SMichael.Lebeane@amd.com return 0; 145011337SMichael.Lebeane@amd.com} 145111337SMichael.Lebeane@amd.com 1452378SN/A/// Target gettimeofday() handler. 1453360SN/Atemplate <class OS> 14541450SN/ASyscallReturn 14553114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14562680Sktlim@umich.edu ThreadContext *tc) 1457360SN/A{ 14586701Sgblack@eecs.umich.edu int index = 0; 14596701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1460360SN/A 146110796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1462360SN/A tp->tv_sec += seconds_since_epoch; 14636109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 14646109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1465360SN/A 14668706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1467360SN/A 14681458SN/A return 0; 1469360SN/A} 1470360SN/A 1471360SN/A 14721999SN/A/// Target utimes() handler. 14731999SN/Atemplate <class OS> 14741999SN/ASyscallReturn 14753114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14762680Sktlim@umich.edu ThreadContext *tc) 14771999SN/A{ 14781999SN/A std::string path; 14791999SN/A 14806701Sgblack@eecs.umich.edu int index = 0; 14818852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 14826701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 14836701Sgblack@eecs.umich.edu return -EFAULT; 14846701Sgblack@eecs.umich.edu } 14851999SN/A 14866701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 14876701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 14888706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 14891999SN/A 14901999SN/A struct timeval hostTimeval[2]; 14911999SN/A for (int i = 0; i < 2; ++i) 14921999SN/A { 14938737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 14948737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 14951999SN/A } 14963669Sbinkertn@umich.edu 14973669Sbinkertn@umich.edu // Adjust path for current working directory 14983669Sbinkertn@umich.edu path = process->fullPath(path); 14993669Sbinkertn@umich.edu 15001999SN/A int result = utimes(path.c_str(), hostTimeval); 15011999SN/A 15021999SN/A if (result < 0) 15031999SN/A return -errno; 15041999SN/A 15051999SN/A return 0; 15061999SN/A} 1507378SN/A/// Target getrusage() function. 1508360SN/Atemplate <class OS> 15091450SN/ASyscallReturn 15103114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15112680Sktlim@umich.edu ThreadContext *tc) 1512360SN/A{ 15136701Sgblack@eecs.umich.edu int index = 0; 15146701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 15156701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1516360SN/A 15173670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 15183670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1519360SN/A rup->ru_stime.tv_sec = 0; 1520360SN/A rup->ru_stime.tv_usec = 0; 1521360SN/A rup->ru_maxrss = 0; 1522360SN/A rup->ru_ixrss = 0; 1523360SN/A rup->ru_idrss = 0; 1524360SN/A rup->ru_isrss = 0; 1525360SN/A rup->ru_minflt = 0; 1526360SN/A rup->ru_majflt = 0; 1527360SN/A rup->ru_nswap = 0; 1528360SN/A rup->ru_inblock = 0; 1529360SN/A rup->ru_oublock = 0; 1530360SN/A rup->ru_msgsnd = 0; 1531360SN/A rup->ru_msgrcv = 0; 1532360SN/A rup->ru_nsignals = 0; 1533360SN/A rup->ru_nvcsw = 0; 1534360SN/A rup->ru_nivcsw = 0; 1535360SN/A 15363670Sbinkertn@umich.edu switch (who) { 15373670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 153810796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 15398737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 15408737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 15413670Sbinkertn@umich.edu break; 15423670Sbinkertn@umich.edu 15433670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 15443670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 15453670Sbinkertn@umich.edu break; 15463670Sbinkertn@umich.edu 15473670Sbinkertn@umich.edu default: 15483670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 15493670Sbinkertn@umich.edu // plow ahead 15503670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 15513670Sbinkertn@umich.edu who); 15523670Sbinkertn@umich.edu } 15533670Sbinkertn@umich.edu 15548706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1555360SN/A 15561458SN/A return 0; 1557360SN/A} 1558360SN/A 15596683Stjones1@inf.ed.ac.uk/// Target times() function. 15606683Stjones1@inf.ed.ac.uktemplate <class OS> 15616683Stjones1@inf.ed.ac.ukSyscallReturn 15626683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15636683Stjones1@inf.ed.ac.uk ThreadContext *tc) 15646683Stjones1@inf.ed.ac.uk{ 15656701Sgblack@eecs.umich.edu int index = 0; 15666701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 15676683Stjones1@inf.ed.ac.uk 15686683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 15697823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 15706683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 15716683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 15726683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 15736683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 15746683Stjones1@inf.ed.ac.uk 15756683Stjones1@inf.ed.ac.uk // Convert to host endianness 15768737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 15776683Stjones1@inf.ed.ac.uk 15786683Stjones1@inf.ed.ac.uk // Write back 15798706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 15806683Stjones1@inf.ed.ac.uk 15816683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 15826683Stjones1@inf.ed.ac.uk return clocks; 15836683Stjones1@inf.ed.ac.uk} 15842553SN/A 15856684Stjones1@inf.ed.ac.uk/// Target time() function. 15866684Stjones1@inf.ed.ac.uktemplate <class OS> 15876684Stjones1@inf.ed.ac.ukSyscallReturn 15886684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15896684Stjones1@inf.ed.ac.uk ThreadContext *tc) 15906684Stjones1@inf.ed.ac.uk{ 15916684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 159210796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 15936684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 15946684Stjones1@inf.ed.ac.uk 15956701Sgblack@eecs.umich.edu int index = 0; 15966701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 159711321Ssteve.reinhardt@amd.com if (taddr != 0) { 15986684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 15998737Skoansin.tan@gmail.com t = TheISA::htog(t); 16008852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 16018852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16026684Stjones1@inf.ed.ac.uk } 16036684Stjones1@inf.ed.ac.uk return sec; 16046684Stjones1@inf.ed.ac.uk} 16052553SN/A 16062553SN/A 16071354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1608