syscall_emul.hh revision 11593
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 482764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 499202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 509202Spalle@lyckegaard.dk defined(__NetBSD__)) 512064SN/A 5211799Sbrandon.potter@amd.com/// 5311799Sbrandon.potter@amd.com/// @file syscall_emul.hh 5411799Sbrandon.potter@amd.com/// 5511799Sbrandon.potter@amd.com/// This file defines objects used to emulate syscalls from the target 5611799Sbrandon.potter@amd.com/// application on the host machine. 5711799Sbrandon.potter@amd.com 58360SN/A#ifdef __CYGWIN32__ 59360SN/A#include <sys/fcntl.h> // for O_BINARY 60360SN/A 61360SN/A#endif 62360SN/A#include <fcntl.h> 63360SN/A#include <sys/mman.h> 641809SN/A#include <sys/stat.h> 6511800Sbrandon.potter@amd.com#include <sys/time.h> 6611392Sbrandon.potter@amd.com#include <sys/uio.h> 671809SN/A 6811392Sbrandon.potter@amd.com#include <cerrno> 6911383Sbrandon.potter@amd.com#include <string> 703113Sgblack@eecs.umich.edu 7111799Sbrandon.potter@amd.com#include "base/chunk_generator.hh" 7211759Sbrandon.potter@amd.com#include "base/intmath.hh" // for RoundUp 7311799Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 748229Snate@binkert.org#include "base/misc.hh" 758229Snate@binkert.org#include "base/trace.hh" 7611594Santhony.gutierrez@amd.com#include "base/types.hh" 777075Snate@binkert.org#include "config/the_isa.hh" 788229Snate@binkert.org#include "cpu/base.hh" 797075Snate@binkert.org#include "cpu/thread_context.hh" 80360SN/A#include "debug/SyscallBase.hh" 8111800Sbrandon.potter@amd.com#include "debug/SyscallVerbose.hh" 8211392Sbrandon.potter@amd.com#include "mem/page_table.hh" 832462SN/A#include "sim/byteswap.hh" 841354SN/A#include "sim/emul_driver.hh" 856216Snate@binkert.org#include "sim/process.hh" 866658Snate@binkert.org#include "sim/syscall_emul_buf.hh" 872474SN/A#include "sim/syscallreturn.hh" 882680Sktlim@umich.edu#include "sim/system.hh" 898229Snate@binkert.org 9010496Ssteve.reinhardt@amd.com// This wrapper macro helps out with readability a bit. FLAGEXT specifies 918229Snate@binkert.org// the verbosity and FMT is the message to be appended to the syscall 9211794Sbrandon.potter@amd.com// header information. The syscall header information contains the cpuid 9310497Ssteve.reinhardt@amd.com// and thread id. 9411794Sbrandon.potter@amd.com#define DPRINTF_SYSCALL(FLAGEXT, FMT, ...) \ 95360SN/A DPRINTFS(Syscall##FLAGEXT, tc->getCpuPtr(), "T%d : syscall " FMT, \ 9611794Sbrandon.potter@amd.com tc->threadId(), __VA_ARGS__) 97360SN/A 98360SN/A/// 99360SN/A/// System call descriptor. 100360SN/A/// 101360SN/Aclass SyscallDesc { 102360SN/A 103360SN/A public: 104360SN/A 105360SN/A /// Typedef for target syscall handler functions. 106360SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 107378SN/A LiveProcess *, ThreadContext *); 1081706SN/A 1093114Sgblack@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 110378SN/A FuncPtr funcPtr; //!< Pointer to emulation function. 111378SN/A int flags; //!< Flags (see Flags enum). 112378SN/A bool warned; //!< Have we warned about unimplemented syscall? 113378SN/A 114378SN/A /// Flag values for controlling syscall behavior. 1151706SN/A enum Flags { 1163114Sgblack@eecs.umich.edu /// Don't set return regs according to funcPtr return value. 117360SN/A /// Used for syscalls with non-standard return conventions 11811760Sbrandon.potter@amd.com /// that explicitly set the ThreadContext regs (e.g., 11911760Sbrandon.potter@amd.com /// sigreturn). 12011760Sbrandon.potter@amd.com SuppressReturnValue = 1, 12111760Sbrandon.potter@amd.com WarnOnce = 2 1226109Ssanchezd@stanford.edu }; 1231706SN/A 1243114Sgblack@eecs.umich.edu /// Constructor. 125378SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 1266109Ssanchezd@stanford.edu : name(_name), funcPtr(_funcPtr), flags(_flags), warned(false) 1276109Ssanchezd@stanford.edu { 1286109Ssanchezd@stanford.edu } 1296109Ssanchezd@stanford.edu 130378SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1311706SN/A void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 1323114Sgblack@eecs.umich.edu 133378SN/A /// Is the WarnOnce flag set? 1345748SSteve.Reinhardt@amd.com bool warnOnce() const { return (flags & WarnOnce); } 1355748SSteve.Reinhardt@amd.com}; 1365748SSteve.Reinhardt@amd.com 137378SN/A 138378SN/A////////////////////////////////////////////////////////////////////// 1391706SN/A// 1403114Sgblack@eecs.umich.edu// The following emulation functions are generic enough that they 141378SN/A// don't need to be recompiled for different emulated OS's. They are 142378SN/A// defined in sim/syscall_emul.cc. 1431706SN/A// 1443114Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////// 145378SN/A 146378SN/A 1471706SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1483114Sgblack@eecs.umich.eduSyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 149378SN/A LiveProcess *p, ThreadContext *tc); 150378SN/A 1511706SN/A/// Handler for unimplemented syscalls that we never intend to 1523114Sgblack@eecs.umich.edu/// implement (signal handling, etc.) and should not affect the correct 153378SN/A/// behavior of the program. Print a warning only if the appropriate 1544118Sgblack@eecs.umich.edu/// trace flag is enabled. Return success to the target program. 1554118Sgblack@eecs.umich.eduSyscallReturn ignoreFunc(SyscallDesc *desc, int num, 15611800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 1574118Sgblack@eecs.umich.edu 158378SN/A/// Target exit() handler: terminate current context. 1591706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 161378SN/A 162378SN/A/// Target exit_group() handler: terminate simulation. (exit all threads) 1631706SN/ASyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1643114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 165360SN/A 1665513SMichael.Adler@intel.com/// Target getpagesize() handler. 1675513SMichael.Adler@intel.comSyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1685513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1695513SMichael.Adler@intel.com 17010203SAli.Saidi@ARM.com/// Target brk() handler: set brk address. 17110203SAli.Saidi@ARM.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 17210203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc); 17310203SAli.Saidi@ARM.com 1745513SMichael.Adler@intel.com/// Target close() handler. 1755513SMichael.Adler@intel.comSyscallReturn closeFunc(SyscallDesc *desc, int num, 1765513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 177511SN/A 17810633Smichaelupton@gmail.com/// Target read() handler. 17910633Smichaelupton@gmail.comSyscallReturn readFunc(SyscallDesc *desc, int num, 18010633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc); 1811706SN/A 1823114Sgblack@eecs.umich.edu/// Target write() handler. 183511SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1845513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1855513SMichael.Adler@intel.com 1865513SMichael.Adler@intel.com/// Target lseek() handler. 1875513SMichael.Adler@intel.comSyscallReturn lseekFunc(SyscallDesc *desc, int num, 188511SN/A LiveProcess *p, ThreadContext *tc); 1891706SN/A 1903114Sgblack@eecs.umich.edu/// Target _llseek() handler. 1911706SN/ASyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1921706SN/A LiveProcess *p, ThreadContext *tc); 1931706SN/A 1941706SN/A/// Target munmap() handler. 1953114Sgblack@eecs.umich.eduSyscallReturn munmapFunc(SyscallDesc *desc, int num, 1961706SN/A LiveProcess *p, ThreadContext *tc); 1971706SN/A 1981706SN/A/// Target gethostname() handler. 1991706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2003114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2011706SN/A 202511SN/A/// Target getcwd() handler. 2036703Svince@csl.cornell.eduSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2046703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2056703Svince@csl.cornell.edu 2066703Svince@csl.cornell.edu/// Target readlink() handler. 2076685Stjones1@inf.ed.ac.ukSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2086685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc, 2096685Stjones1@inf.ed.ac.uk int index = 0); 2106685Stjones1@inf.ed.ac.ukSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2116685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2125513SMichael.Adler@intel.com 2135513SMichael.Adler@intel.com/// Target unlink() handler. 2145513SMichael.Adler@intel.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 2155513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc, 2165513SMichael.Adler@intel.com int index); 2171999SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2181999SN/A LiveProcess *p, ThreadContext *tc); 2193114Sgblack@eecs.umich.edu 2201999SN/A/// Target mkdir() handler. 2211999SN/ASyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2221999SN/A LiveProcess *p, ThreadContext *tc); 2231999SN/A 2243114Sgblack@eecs.umich.edu/// Target rename() handler. 2251999SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2263079Sstever@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2273079Sstever@eecs.umich.edu 2283114Sgblack@eecs.umich.edu 2293079Sstever@eecs.umich.edu/// Target truncate() handler. 2302093SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2312093SN/A LiveProcess *p, ThreadContext *tc); 2323114Sgblack@eecs.umich.edu 2332093SN/A 2342687Sksewell@umich.edu/// Target ftruncate() handler. 2352687Sksewell@umich.eduSyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 23611800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2372687Sksewell@umich.edu 2382238SN/A 2392238SN/A/// Target truncate64() handler. 24011800Sbrandon.potter@amd.comSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2412238SN/A LiveProcess *p, ThreadContext *tc); 2422238SN/A 2432238SN/A/// Target ftruncate64() handler. 24411800Sbrandon.potter@amd.comSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2452238SN/A LiveProcess *p, ThreadContext *tc); 2462238SN/A 2472238SN/A 24811800Sbrandon.potter@amd.com/// Target umask() handler. 2492238SN/ASyscallReturn umaskFunc(SyscallDesc *desc, int num, 2502238SN/A LiveProcess *p, ThreadContext *tc); 2512238SN/A 25211800Sbrandon.potter@amd.com 2532238SN/A/// Target chown() handler. 2542238SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2552238SN/A LiveProcess *p, ThreadContext *tc); 25611800Sbrandon.potter@amd.com 2572238SN/A 2582238SN/A/// Target fchown() handler. 2592238SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 26011800Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 2612238SN/A 2622238SN/A/// Target dup() handler. 2632238SN/ASyscallReturn dupFunc(SyscallDesc *desc, int num, 26411800Sbrandon.potter@amd.com LiveProcess *process, ThreadContext *tc); 2652238SN/A 2666109Ssanchezd@stanford.edu/// Target fnctl() handler. 2676109Ssanchezd@stanford.eduSyscallReturn fcntlFunc(SyscallDesc *desc, int num, 26811800Sbrandon.potter@amd.com LiveProcess *process, ThreadContext *tc); 2692238SN/A 2709455Smitch.hayenga+gem5@gmail.com/// Target fcntl64() handler. 2719455Smitch.hayenga+gem5@gmail.comSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2729455Smitch.hayenga+gem5@gmail.com LiveProcess *process, ThreadContext *tc); 27310203SAli.Saidi@ARM.com 27410203SAli.Saidi@ARM.com/// Target setuid() handler. 27510203SAli.Saidi@ARM.comSyscallReturn setuidFunc(SyscallDesc *desc, int num, 2769455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 2779112Smarc.orr@gmail.com 2789112Smarc.orr@gmail.com/// Target getpid() handler. 2799112Smarc.orr@gmail.comSyscallReturn getpidFunc(SyscallDesc *desc, int num, 2809112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 2819112Smarc.orr@gmail.com 2829112Smarc.orr@gmail.com/// Target getuid() handler. 2839112Smarc.orr@gmail.comSyscallReturn getuidFunc(SyscallDesc *desc, int num, 2849112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 2859112Smarc.orr@gmail.com 2869112Smarc.orr@gmail.com/// Target getgid() handler. 2879112Smarc.orr@gmail.comSyscallReturn getgidFunc(SyscallDesc *desc, int num, 2889112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 2899112Smarc.orr@gmail.com 2909112Smarc.orr@gmail.com/// Target getppid() handler. 2919112Smarc.orr@gmail.comSyscallReturn getppidFunc(SyscallDesc *desc, int num, 2929112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 2939112Smarc.orr@gmail.com 2949112Smarc.orr@gmail.com/// Target geteuid() handler. 2959112Smarc.orr@gmail.comSyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2969112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 2979112Smarc.orr@gmail.com 2989112Smarc.orr@gmail.com/// Target getegid() handler. 2999112Smarc.orr@gmail.comSyscallReturn getegidFunc(SyscallDesc *desc, int num, 3009112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 3019238Slluc.alvarez@bsc.es 3029112Smarc.orr@gmail.com/// Target clone() handler. 3039112Smarc.orr@gmail.comSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3049112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 3059112Smarc.orr@gmail.com 3069112Smarc.orr@gmail.com/// Target access() handler 3079112Smarc.orr@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3089112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc); 3099112Smarc.orr@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3109112Smarc.orr@gmail.com LiveProcess *p, ThreadContext *tc, 3119112Smarc.orr@gmail.com int index); 31211367Sandreas.hansson@arm.com 3139112Smarc.orr@gmail.com/// Futex system call 31411321Ssteve.reinhardt@amd.com/// Implemented by Daniel Sanchez 3159112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3169112Smarc.orr@gmail.comtemplate <class OS> 3179112Smarc.orr@gmail.comSyscallReturn 3189112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3199112Smarc.orr@gmail.com ThreadContext *tc) 3209112Smarc.orr@gmail.com{ 3219112Smarc.orr@gmail.com int index_uaddr = 0; 3229112Smarc.orr@gmail.com int index_op = 1; 3239112Smarc.orr@gmail.com int index_val = 2; 3249112Smarc.orr@gmail.com int index_timeout = 3; 3259112Smarc.orr@gmail.com 3269112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3279112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3289112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3299112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3309112Smarc.orr@gmail.com 3319112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3329112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3339112Smarc.orr@gmail.com 3349112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3359112Smarc.orr@gmail.com uaddr, op, val); 3369112Smarc.orr@gmail.com 3379112Smarc.orr@gmail.com op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3389112Smarc.orr@gmail.com 3399112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3409112Smarc.orr@gmail.com if (timeout != 0) { 3419112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3429112Smarc.orr@gmail.com "we'll wait indefinitely"); 3439112Smarc.orr@gmail.com } 34411321Ssteve.reinhardt@amd.com 3459112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3469112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3479112Smarc.orr@gmail.com int mem_val = *((int *)buf); 3489112Smarc.orr@gmail.com delete[] buf; 3499112Smarc.orr@gmail.com 3509112Smarc.orr@gmail.com if (val != mem_val) { 3519112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3529112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3539238Slluc.alvarez@bsc.es return -OS::TGT_EWOULDBLOCK; 3549112Smarc.orr@gmail.com } 3559112Smarc.orr@gmail.com 3569112Smarc.orr@gmail.com // Queue the thread context 3579112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3589112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3592238SN/A tcWaitList = futex_map.find(uaddr)->second; 3602238SN/A } else { 3612238SN/A tcWaitList = new std::list<ThreadContext *>(); 3622238SN/A futex_map.insert(std::pair< uint64_t, 3633114Sgblack@eecs.umich.edu std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3642238SN/A } 3652238SN/A tcWaitList->push_back(tc); 3662238SN/A DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3673114Sgblack@eecs.umich.edu "thread context\n"); 3682238SN/A tc->suspend(); 3692238SN/A return 0; 3702238SN/A } else if (op == OS::TGT_FUTEX_WAKE){ 3713114Sgblack@eecs.umich.edu int wokenUp = 0; 3722238SN/A std::list<ThreadContext *> * tcWaitList; 3732238SN/A if (futex_map.count(uaddr)) { 3742238SN/A tcWaitList = futex_map.find(uaddr)->second; 3753114Sgblack@eecs.umich.edu while (tcWaitList->size() > 0 && wokenUp < val) { 3762238SN/A tcWaitList->front()->activate(); 3772238SN/A tcWaitList->pop_front(); 3781354SN/A wokenUp++; 3791354SN/A } 38010796Sbrandon.potter@amd.com if (tcWaitList->empty()) { 38110796Sbrandon.potter@amd.com futex_map.erase(uaddr); 3821354SN/A delete tcWaitList; 3831354SN/A } 3841354SN/A } 3851354SN/A DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3861354SN/A "thread contexts\n", wokenUp); 3871354SN/A return wokenUp; 3881354SN/A } else { 3891354SN/A warn("sys_futex: op %d is not implemented, just returning...", op); 3901354SN/A return 0; 3911354SN/A } 39210796Sbrandon.potter@amd.com 3931354SN/A} 39410796Sbrandon.potter@amd.com 3951354SN/A 3961354SN/A/// Pseudo Funcs - These functions use a different return convension, 3971354SN/A/// returning a second value in a register other than the normal return register 3981354SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 39910796Sbrandon.potter@amd.com LiveProcess *process, ThreadContext *tc); 40010796Sbrandon.potter@amd.com 40110796Sbrandon.potter@amd.com/// Target getpidPseudo() handler. 40210796Sbrandon.potter@amd.comSyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 40310796Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 40410796Sbrandon.potter@amd.com 40510796Sbrandon.potter@amd.com/// Target getuidPseudo() handler. 40610796Sbrandon.potter@amd.comSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 40710796Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 40810796Sbrandon.potter@amd.com 40910796Sbrandon.potter@amd.com/// Target getgidPseudo() handler. 410360SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 411360SN/A LiveProcess *p, ThreadContext *tc); 412360SN/A 413360SN/A 414360SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 415360SN/Aconst int one_million = 1000000; 416360SN/A/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 41711759Sbrandon.potter@amd.comconst int one_billion = 1000000000; 4183113Sgblack@eecs.umich.edu 4193113Sgblack@eecs.umich.edu/// Approximate seconds since the epoch (1/1/1970). About a billion, 4203113Sgblack@eecs.umich.edu/// by my reckoning. We want to keep this a constant (not use the 4213113Sgblack@eecs.umich.edu/// real-world time) to keep simulations repeatable. 4223113Sgblack@eecs.umich.educonst unsigned seconds_since_epoch = 1000000000; 4233113Sgblack@eecs.umich.edu 4243113Sgblack@eecs.umich.edu/// Helper function to convert current elapsed time to seconds and 4253113Sgblack@eecs.umich.edu/// microseconds. 4263113Sgblack@eecs.umich.edutemplate <class T1, class T2> 4273113Sgblack@eecs.umich.eduvoid 4283113Sgblack@eecs.umich.edugetElapsedTimeMicro(T1 &sec, T2 &usec) 4293113Sgblack@eecs.umich.edu{ 4303113Sgblack@eecs.umich.edu uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 4313113Sgblack@eecs.umich.edu sec = elapsed_usecs / one_million; 4323113Sgblack@eecs.umich.edu usec = elapsed_usecs % one_million; 4333113Sgblack@eecs.umich.edu} 4344189Sgblack@eecs.umich.edu 4354189Sgblack@eecs.umich.edu/// Helper function to convert current elapsed time to seconds and 4363113Sgblack@eecs.umich.edu/// nanoseconds. 4373113Sgblack@eecs.umich.edutemplate <class T1, class T2> 4383113Sgblack@eecs.umich.eduvoid 4393113Sgblack@eecs.umich.edugetElapsedTimeNano(T1 &sec, T2 &nsec) 4408737Skoansin.tan@gmail.com{ 4413113Sgblack@eecs.umich.edu uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 4428737Skoansin.tan@gmail.com sec = elapsed_nsecs / one_billion; 4433277Sgblack@eecs.umich.edu nsec = elapsed_nsecs % one_billion; 4445515SMichael.Adler@intel.com} 4455515SMichael.Adler@intel.com 4465515SMichael.Adler@intel.com////////////////////////////////////////////////////////////////////// 4475515SMichael.Adler@intel.com// 4485515SMichael.Adler@intel.com// The following emulation functions are generic, but need to be 4498737Skoansin.tan@gmail.com// templated to account for differences in types, constants, etc. 4503277Sgblack@eecs.umich.edu// 4518737Skoansin.tan@gmail.com////////////////////////////////////////////////////////////////////// 4523277Sgblack@eecs.umich.edu 4538737Skoansin.tan@gmail.com#if NO_STAT64 4543277Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4558737Skoansin.tan@gmail.com typedef struct stat hst_stat64; 4563113Sgblack@eecs.umich.edu#else 4573113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4583113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4593113Sgblack@eecs.umich.edu#endif 4608737Skoansin.tan@gmail.com 4613113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4628737Skoansin.tan@gmail.com//// buffer. Also copies the target buffer out to the simulated 4633114Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4648737Skoansin.tan@gmail.com 4653114Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4668737Skoansin.tan@gmail.comstatic void 4673114Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4688737Skoansin.tan@gmail.com{ 4694061Sgblack@eecs.umich.edu using namespace TheISA; 4704061Sgblack@eecs.umich.edu 4714061Sgblack@eecs.umich.edu if (fakeTTY) 4728737Skoansin.tan@gmail.com tgt->st_dev = 0xA; 4733113Sgblack@eecs.umich.edu else 4748737Skoansin.tan@gmail.com tgt->st_dev = host->st_dev; 4753113Sgblack@eecs.umich.edu tgt->st_dev = TheISA::htog(tgt->st_dev); 4763113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4773113Sgblack@eecs.umich.edu tgt->st_ino = TheISA::htog(tgt->st_ino); 4783113Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4793113Sgblack@eecs.umich.edu if (fakeTTY) { 4803113Sgblack@eecs.umich.edu // Claim to be a character device 4813113Sgblack@eecs.umich.edu tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4823113Sgblack@eecs.umich.edu tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4834189Sgblack@eecs.umich.edu } 4844189Sgblack@eecs.umich.edu tgt->st_mode = TheISA::htog(tgt->st_mode); 4853113Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4863113Sgblack@eecs.umich.edu tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4873113Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4888737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4893113Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4908737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4913113Sgblack@eecs.umich.edu if (fakeTTY) 4928737Skoansin.tan@gmail.com tgt->st_rdev = 0x880d; 4933113Sgblack@eecs.umich.edu else 4943113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4953113Sgblack@eecs.umich.edu tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4963113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4973113Sgblack@eecs.umich.edu tgt->st_size = TheISA::htog(tgt->st_size); 4983113Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4993113Sgblack@eecs.umich.edu tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5003113Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5013113Sgblack@eecs.umich.edu tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5023113Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5038852Sandreas.hansson@arm.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5043113Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5053113Sgblack@eecs.umich.edu // consistently across different hosts. 5063113Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5073113Sgblack@eecs.umich.edu tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5083113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5093113Sgblack@eecs.umich.edu tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5103113Sgblack@eecs.umich.edu} 5113113Sgblack@eecs.umich.edu 5123113Sgblack@eecs.umich.edu// Same for stat64 5133113Sgblack@eecs.umich.edu 5148852Sandreas.hansson@arm.comtemplate <typename target_stat, typename host_stat64> 5153113Sgblack@eecs.umich.edustatic void 5163113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5173113Sgblack@eecs.umich.edu{ 5183113Sgblack@eecs.umich.edu using namespace TheISA; 5196686Stjones1@inf.ed.ac.uk 5203113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5213113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5223113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 52311759Sbrandon.potter@amd.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 52411759Sbrandon.potter@amd.com tgt->st_mtime_nsec = host->st_mtime_nsec; 52511759Sbrandon.potter@amd.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 52611759Sbrandon.potter@amd.com tgt->st_ctime_nsec = host->st_ctime_nsec; 52711759Sbrandon.potter@amd.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 52811759Sbrandon.potter@amd.com#else 52911759Sbrandon.potter@amd.com tgt->st_atime_nsec = 0; 53011759Sbrandon.potter@amd.com tgt->st_mtime_nsec = 0; 53111759Sbrandon.potter@amd.com tgt->st_ctime_nsec = 0; 53211759Sbrandon.potter@amd.com#endif 53311759Sbrandon.potter@amd.com} 53411759Sbrandon.potter@amd.com 53511759Sbrandon.potter@amd.com//Here are a couple convenience functions 53611759Sbrandon.potter@amd.comtemplate<class OS> 53711759Sbrandon.potter@amd.comstatic void 53811759Sbrandon.potter@amd.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 53911759Sbrandon.potter@amd.com hst_stat *host, bool fakeTTY = false) 54011759Sbrandon.potter@amd.com{ 54111759Sbrandon.potter@amd.com typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 54211759Sbrandon.potter@amd.com tgt_stat_buf tgt(addr); 54311759Sbrandon.potter@amd.com convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 54411759Sbrandon.potter@amd.com tgt.copyOut(mem); 54511759Sbrandon.potter@amd.com} 54611759Sbrandon.potter@amd.com 54711759Sbrandon.potter@amd.comtemplate<class OS> 54811759Sbrandon.potter@amd.comstatic void 549378SN/AcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 550378SN/A hst_stat64 *host, bool fakeTTY = false) 5519141Smarc.orr@gmail.com{ 5529141Smarc.orr@gmail.com typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 553360SN/A tgt_stat_buf tgt(addr); 5541450SN/A convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5553114Sgblack@eecs.umich.edu tgt.copyOut(mem); 5562680Sktlim@umich.edu} 557360SN/A 5586701Sgblack@eecs.umich.edu/// Target ioctl() handler. For the most part, programs call ioctl() 55910930Sbrandon.potter@amd.com/// only to find out if their stdout is a tty, to determine whether to 5606701Sgblack@eecs.umich.edu/// do line or block buffering. We always claim that output fds are 561360SN/A/// not TTYs to provide repeatable results. 56210930Sbrandon.potter@amd.comtemplate <class OS> 563360SN/ASyscallReturn 56410932Sbrandon.potter@amd.comioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 56510496Ssteve.reinhardt@amd.com ThreadContext *tc) 56610930Sbrandon.potter@amd.com{ 567360SN/A int index = 0; 5681458SN/A int tgt_fd = process->getSyscallArg(tc, index); 569360SN/A unsigned req = process->getSyscallArg(tc, index); 570360SN/A 57110930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 57210930Sbrandon.potter@amd.com 57310496Ssteve.reinhardt@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 57410496Ssteve.reinhardt@amd.com 5759141Smarc.orr@gmail.com if (fde == NULL) { 5761458SN/A // doesn't map to any simulator fd: not a valid target fd 5779141Smarc.orr@gmail.com return -EBADF; 578360SN/A } 5799141Smarc.orr@gmail.com 58010930Sbrandon.potter@amd.com if (fde->driver != NULL) { 5819141Smarc.orr@gmail.com return fde->driver->ioctl(process, tc, req); 582360SN/A } 583360SN/A 584360SN/A if (OS::isTtyReq(req)) { 58510027SChris.Adeniyi-Jones@arm.com return -ENOTTY; 5863114Sgblack@eecs.umich.edu } 58710027SChris.Adeniyi-Jones@arm.com 588360SN/A warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 589360SN/A tgt_fd, req, tc->pcState()); 590360SN/A return -ENOTTY; 5918852Sandreas.hansson@arm.com} 5926701Sgblack@eecs.umich.edu 5931458SN/Atemplate <class OS> 594360SN/Astatic SyscallReturn 5956701Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5966701Sgblack@eecs.umich.edu ThreadContext *tc, int index) 597360SN/A{ 598360SN/A std::string path; 599360SN/A 600360SN/A if (!tc->getMemProxy().tryReadString(path, 601360SN/A process->getSyscallArg(tc, index))) 602360SN/A return -EFAULT; 603360SN/A 604360SN/A int tgtFlags = process->getSyscallArg(tc, index); 605360SN/A int mode = process->getSyscallArg(tc, index); 606360SN/A int hostFlags = 0; 607360SN/A 608360SN/A // translate open flags 6091706SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 610360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 611360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 612360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 613360SN/A } 614360SN/A } 6153669Sbinkertn@umich.edu 6163669Sbinkertn@umich.edu // any target flags left? 6173669Sbinkertn@umich.edu if (tgtFlags != 0) 6181706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 6191706SN/A 62010496Ssteve.reinhardt@amd.com#ifdef __CYGWIN32__ 62110496Ssteve.reinhardt@amd.com hostFlags |= O_BINARY; 62210496Ssteve.reinhardt@amd.com#endif 62310496Ssteve.reinhardt@amd.com 62410496Ssteve.reinhardt@amd.com // Adjust path for current working directory 62510496Ssteve.reinhardt@amd.com path = process->fullPath(path); 62610496Ssteve.reinhardt@amd.com 62710496Ssteve.reinhardt@amd.com DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 62810496Ssteve.reinhardt@amd.com 62910496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 63010496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 63110496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 63210496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 63310496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 63410496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 63510496Ssteve.reinhardt@amd.com return -ENOENT; 63610496Ssteve.reinhardt@amd.com } 63710496Ssteve.reinhardt@amd.com 63810496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 63910496Ssteve.reinhardt@amd.com if (drv != NULL) { 6405795Ssaidi@eecs.umich.edu // the driver's open method will allocate a fd from the 6419143Ssteve.reinhardt@amd.com // process if necessary. 6429142Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 6439142Ssteve.reinhardt@amd.com } 6449143Ssteve.reinhardt@amd.com 6455795Ssaidi@eecs.umich.edu // fall through here for pass through to host devices, such as 6469143Ssteve.reinhardt@amd.com // /dev/zero 6475795Ssaidi@eecs.umich.edu } 6485795Ssaidi@eecs.umich.edu 6495795Ssaidi@eecs.umich.edu int fd; 6509143Ssteve.reinhardt@amd.com int local_errno; 6515795Ssaidi@eecs.umich.edu if (startswith(path, "/proc/") || startswith(path, "/system/") || 652360SN/A startswith(path, "/platform/") || startswith(path, "/sys/")) { 6539143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6549143Ssteve.reinhardt@amd.com fd = OS::openSpecialFile(path, process, tc); 6559143Ssteve.reinhardt@amd.com local_errno = ENOENT; 65610932Sbrandon.potter@amd.com } else { 657360SN/A // open the file 658360SN/A fd = open(path.c_str(), hostFlags, mode); 65910027SChris.Adeniyi-Jones@arm.com local_errno = errno; 66010027SChris.Adeniyi-Jones@arm.com } 66110027SChris.Adeniyi-Jones@arm.com 66210027SChris.Adeniyi-Jones@arm.com if (fd == -1) 66310027SChris.Adeniyi-Jones@arm.com return -local_errno; 66410027SChris.Adeniyi-Jones@arm.com 66510027SChris.Adeniyi-Jones@arm.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 66610027SChris.Adeniyi-Jones@arm.com} 66710027SChris.Adeniyi-Jones@arm.com 66810027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 66910027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 67010027SChris.Adeniyi-Jones@arm.comSyscallReturn 67110027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67210027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 67310027SChris.Adeniyi-Jones@arm.com{ 67410027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 67510027SChris.Adeniyi-Jones@arm.com} 67610027SChris.Adeniyi-Jones@arm.com 67710027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 67810027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 67910027SChris.Adeniyi-Jones@arm.comSyscallReturn 68010027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 68110633Smichaelupton@gmail.com ThreadContext *tc) 68210633Smichaelupton@gmail.com{ 68310633Smichaelupton@gmail.com int index = 0; 68410633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 68510633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 68610633Smichaelupton@gmail.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 68710633Smichaelupton@gmail.com return openFunc<OS>(desc, callnum, process, tc, 1); 68810633Smichaelupton@gmail.com} 68910633Smichaelupton@gmail.com 69010633Smichaelupton@gmail.com/// Target unlinkat() handler. 69110633Smichaelupton@gmail.comtemplate <class OS> 69210633Smichaelupton@gmail.comSyscallReturn 69310633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69410633Smichaelupton@gmail.com ThreadContext *tc) 69510203SAli.Saidi@ARM.com{ 69610203SAli.Saidi@ARM.com int index = 0; 69710203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 69810203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 69910203SAli.Saidi@ARM.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 70010203SAli.Saidi@ARM.com 70110203SAli.Saidi@ARM.com return unlinkHelper(desc, callnum, process, tc, 1); 70210203SAli.Saidi@ARM.com} 70310203SAli.Saidi@ARM.com 70410203SAli.Saidi@ARM.com/// Target facessat() handler 70510203SAli.Saidi@ARM.comtemplate <class OS> 70610203SAli.Saidi@ARM.comSyscallReturn 70710203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70810203SAli.Saidi@ARM.com ThreadContext *tc) 70910203SAli.Saidi@ARM.com{ 71010203SAli.Saidi@ARM.com int index = 0; 71110203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 71210203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 71310203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 71410203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 71510203SAli.Saidi@ARM.com} 71610203SAli.Saidi@ARM.com 71710203SAli.Saidi@ARM.com/// Target readlinkat() handler 71810203SAli.Saidi@ARM.comtemplate <class OS> 71910203SAli.Saidi@ARM.comSyscallReturn 72010203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 72110850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 72210850SGiacomo.Gabrielli@arm.com{ 72310850SGiacomo.Gabrielli@arm.com int index = 0; 72410850SGiacomo.Gabrielli@arm.com int dirfd = process->getSyscallArg(tc, index); 72510850SGiacomo.Gabrielli@arm.com if (dirfd != OS::TGT_AT_FDCWD) 72610850SGiacomo.Gabrielli@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 72710850SGiacomo.Gabrielli@arm.com return readlinkFunc(desc, callnum, process, tc, 1); 72810850SGiacomo.Gabrielli@arm.com} 72910850SGiacomo.Gabrielli@arm.com 73010850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 73110850SGiacomo.Gabrielli@arm.comtemplate <class OS> 73210850SGiacomo.Gabrielli@arm.comSyscallReturn 73310850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 73410850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 73510850SGiacomo.Gabrielli@arm.com{ 73610850SGiacomo.Gabrielli@arm.com int index = 0; 73710850SGiacomo.Gabrielli@arm.com 73810850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 73910850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 74010850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 74110850SGiacomo.Gabrielli@arm.com 74210850SGiacomo.Gabrielli@arm.com std::string old_name; 74310850SGiacomo.Gabrielli@arm.com 74410850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 74510850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 74610850SGiacomo.Gabrielli@arm.com return -EFAULT; 74710850SGiacomo.Gabrielli@arm.com 74810850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 74910850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 75010850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 75110850SGiacomo.Gabrielli@arm.com 75210850SGiacomo.Gabrielli@arm.com std::string new_name; 75310850SGiacomo.Gabrielli@arm.com 75410850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 75510850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 75610850SGiacomo.Gabrielli@arm.com return -EFAULT; 7576640Svince@csl.cornell.edu 7586640Svince@csl.cornell.edu // Adjust path for current working directory 7596640Svince@csl.cornell.edu old_name = process->fullPath(old_name); 7606640Svince@csl.cornell.edu new_name = process->fullPath(new_name); 7616640Svince@csl.cornell.edu 7626640Svince@csl.cornell.edu int result = rename(old_name.c_str(), new_name.c_str()); 7636640Svince@csl.cornell.edu return (result == -1) ? -errno : result; 7646701Sgblack@eecs.umich.edu} 7656701Sgblack@eecs.umich.edu 76610793Sbrandon.potter@amd.com/// Target sysinfo() handler. 7676640Svince@csl.cornell.edutemplate <class OS> 76811758Sbrandon.potter@amd.comSyscallReturn 76911758Sbrandon.potter@amd.comsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 77011758Sbrandon.potter@amd.com ThreadContext *tc) 7716640Svince@csl.cornell.edu{ 7728706Sandreas.hansson@arm.com 7736640Svince@csl.cornell.edu int index = 0; 7746701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 7756640Svince@csl.cornell.edu sysinfo(process->getSyscallArg(tc, index)); 776360SN/A 7771999SN/A sysinfo->uptime=seconds_since_epoch; 7781999SN/A sysinfo->totalram=process->system->memSize(); 7791999SN/A 7803114Sgblack@eecs.umich.edu sysinfo.copyOut(tc->getMemProxy()); 7812680Sktlim@umich.edu 7821999SN/A return 0; 7831999SN/A} 7841999SN/A 7856701Sgblack@eecs.umich.edu/// Target chmod() handler. 7868852Sandreas.hansson@arm.comtemplate <class OS> 7876701Sgblack@eecs.umich.eduSyscallReturn 7881999SN/AchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7896701Sgblack@eecs.umich.edu ThreadContext *tc) 7901999SN/A{ 7916701Sgblack@eecs.umich.edu std::string path; 7921999SN/A 7931999SN/A int index = 0; 7941999SN/A if (!tc->getMemProxy().tryReadString(path, 7951999SN/A process->getSyscallArg(tc, index))) { 7961999SN/A return -EFAULT; 7973669Sbinkertn@umich.edu } 7983669Sbinkertn@umich.edu 7993669Sbinkertn@umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8001999SN/A mode_t hostMode = 0; 8011999SN/A 8021999SN/A // XXX translate mode flags via OS::something??? 8032218SN/A hostMode = mode; 8041999SN/A 8051999SN/A // Adjust path for current working directory 8061999SN/A path = process->fullPath(path); 8071999SN/A 8081999SN/A // do the chmod 8091999SN/A int result = chmod(path.c_str(), hostMode); 8101999SN/A if (result < 0) 8111999SN/A return -errno; 8123114Sgblack@eecs.umich.edu 8132680Sktlim@umich.edu return 0; 8141999SN/A} 8156701Sgblack@eecs.umich.edu 81610931Sbrandon.potter@amd.com 81710931Sbrandon.potter@amd.com/// Target fchmod() handler. 81810931Sbrandon.potter@amd.comtemplate <class OS> 81910932Sbrandon.potter@amd.comSyscallReturn 82010931Sbrandon.potter@amd.comfchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8211999SN/A ThreadContext *tc) 8221999SN/A{ 8231999SN/A int index = 0; 8241999SN/A int tgt_fd = process->getSyscallArg(tc, index); 8251999SN/A uint32_t mode = process->getSyscallArg(tc, index); 8261999SN/A 8271999SN/A int sim_fd = process->getSimFD(tgt_fd); 8281999SN/A if (sim_fd < 0) 82910931Sbrandon.potter@amd.com return -EBADF; 8301999SN/A 8312218SN/A mode_t hostMode = 0; 8321999SN/A 8331999SN/A // XXX translate mode flags via OS::someting??? 8341999SN/A hostMode = mode; 8351999SN/A 8365877Shsul@eecs.umich.edu // do the fchmod 8375877Shsul@eecs.umich.edu int result = fchmod(sim_fd, hostMode); 8385877Shsul@eecs.umich.edu if (result < 0) 8395877Shsul@eecs.umich.edu return -errno; 8405877Shsul@eecs.umich.edu 8416701Sgblack@eecs.umich.edu return 0; 8426701Sgblack@eecs.umich.edu} 8436701Sgblack@eecs.umich.edu 8446701Sgblack@eecs.umich.edu/// Target mremap() handler. 8456701Sgblack@eecs.umich.edutemplate <class OS> 84610027SChris.Adeniyi-Jones@arm.comSyscallReturn 84710027SChris.Adeniyi-Jones@arm.commremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 84810027SChris.Adeniyi-Jones@arm.com{ 84910027SChris.Adeniyi-Jones@arm.com int index = 0; 85010027SChris.Adeniyi-Jones@arm.com Addr start = process->getSyscallArg(tc, index); 8515877Shsul@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 85210318Sandreas.hansson@arm.com uint64_t new_length = process->getSyscallArg(tc, index); 85310318Sandreas.hansson@arm.com uint64_t flags = process->getSyscallArg(tc, index); 8545877Shsul@eecs.umich.edu uint64_t provided_address = 0; 8555877Shsul@eecs.umich.edu bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 8565877Shsul@eecs.umich.edu 8575877Shsul@eecs.umich.edu if (use_provided_address) 85810486Stjablin@gmail.com provided_address = process->getSyscallArg(tc, index); 85910486Stjablin@gmail.com 8605877Shsul@eecs.umich.edu if ((start % TheISA::PageBytes != 0) || 86110027SChris.Adeniyi-Jones@arm.com (provided_address % TheISA::PageBytes != 0)) { 86210027SChris.Adeniyi-Jones@arm.com warn("mremap failing: arguments not page aligned"); 8635877Shsul@eecs.umich.edu return -EINVAL; 8648601Ssteve.reinhardt@amd.com } 8655877Shsul@eecs.umich.edu 8665877Shsul@eecs.umich.edu new_length = roundUp(new_length, TheISA::PageBytes); 8675877Shsul@eecs.umich.edu 86810027SChris.Adeniyi-Jones@arm.com if (new_length > old_length) { 8695877Shsul@eecs.umich.edu if ((start + old_length) == process->mmap_end && 8705877Shsul@eecs.umich.edu (!use_provided_address || provided_address == start)) { 8715877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 87210027SChris.Adeniyi-Jones@arm.com process->allocateMem(process->mmap_end, diff); 87310027SChris.Adeniyi-Jones@arm.com process->mmap_end += diff; 87410027SChris.Adeniyi-Jones@arm.com return start; 87510027SChris.Adeniyi-Jones@arm.com } else { 87610027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 87710027SChris.Adeniyi-Jones@arm.com warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8785877Shsul@eecs.umich.edu return -ENOMEM; 87910027SChris.Adeniyi-Jones@arm.com } else { 88010027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 88110027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 88210027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 88310027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 88410027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 88510027SChris.Adeniyi-Jones@arm.com new_length - old_length); 88610027SChris.Adeniyi-Jones@arm.com // add on the remaining unallocated pages 88710027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 88810027SChris.Adeniyi-Jones@arm.com new_length - old_length, 88910027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 89010027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 89110027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 8925877Shsul@eecs.umich.edu if (use_provided_address && 8935877Shsul@eecs.umich.edu new_start + new_length > process->mmap_end) { 8945877Shsul@eecs.umich.edu // something fishy going on here, at least notify the user 89510027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 89610027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 8978601Ssteve.reinhardt@amd.com } 89810027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 8995877Shsul@eecs.umich.edu return new_start; 9005877Shsul@eecs.umich.edu } 9011999SN/A } 902378SN/A } else { 903360SN/A if (use_provided_address && provided_address != start) 9041450SN/A process->pTable->remap(start, new_length, provided_address); 9053114Sgblack@eecs.umich.edu process->pTable->unmap(start + new_length, old_length - new_length); 9062680Sktlim@umich.edu return use_provided_address ? provided_address : start; 907360SN/A } 908360SN/A} 909360SN/A 9106701Sgblack@eecs.umich.edu/// Target stat() handler. 9118852Sandreas.hansson@arm.comtemplate <class OS> 9126701Sgblack@eecs.umich.eduSyscallReturn 9136701Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9146701Sgblack@eecs.umich.edu ThreadContext *tc) 9156701Sgblack@eecs.umich.edu{ 916360SN/A std::string path; 9173669Sbinkertn@umich.edu 9183669Sbinkertn@umich.edu int index = 0; 9193669Sbinkertn@umich.edu if (!tc->getMemProxy().tryReadString(path, 920360SN/A process->getSyscallArg(tc, index))) { 921360SN/A return -EFAULT; 922360SN/A } 923360SN/A Addr bufPtr = process->getSyscallArg(tc, index); 9242218SN/A 925360SN/A // Adjust path for current working directory 9268706Sandreas.hansson@arm.com path = process->fullPath(path); 927360SN/A 9281458SN/A struct stat hostBuf; 929360SN/A int result = stat(path.c_str(), &hostBuf); 930360SN/A 931360SN/A if (result < 0) 9325074Ssaidi@eecs.umich.edu return -errno; 9335074Ssaidi@eecs.umich.edu 9345074Ssaidi@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9355074Ssaidi@eecs.umich.edu 9365074Ssaidi@eecs.umich.edu return 0; 9375074Ssaidi@eecs.umich.edu} 9385074Ssaidi@eecs.umich.edu 9395074Ssaidi@eecs.umich.edu 9406701Sgblack@eecs.umich.edu/// Target stat64() handler. 9418852Sandreas.hansson@arm.comtemplate <class OS> 9426701Sgblack@eecs.umich.eduSyscallReturn 9435074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9446701Sgblack@eecs.umich.edu ThreadContext *tc) 9455074Ssaidi@eecs.umich.edu{ 9465074Ssaidi@eecs.umich.edu std::string path; 9475074Ssaidi@eecs.umich.edu 9485074Ssaidi@eecs.umich.edu int index = 0; 9495208Ssaidi@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 9505208Ssaidi@eecs.umich.edu process->getSyscallArg(tc, index))) 9515208Ssaidi@eecs.umich.edu return -EFAULT; 9525208Ssaidi@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9535074Ssaidi@eecs.umich.edu 9545074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9555208Ssaidi@eecs.umich.edu path = process->fullPath(path); 9565074Ssaidi@eecs.umich.edu 9575074Ssaidi@eecs.umich.edu#if NO_STAT64 9585074Ssaidi@eecs.umich.edu struct stat hostBuf; 9595074Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9608706Sandreas.hansson@arm.com#else 9615074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9625074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9635074Ssaidi@eecs.umich.edu#endif 9645074Ssaidi@eecs.umich.edu 9655074Ssaidi@eecs.umich.edu if (result < 0) 96610027SChris.Adeniyi-Jones@arm.com return -errno; 96710027SChris.Adeniyi-Jones@arm.com 96810027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 96910027SChris.Adeniyi-Jones@arm.com 97010027SChris.Adeniyi-Jones@arm.com return 0; 97110027SChris.Adeniyi-Jones@arm.com} 97210027SChris.Adeniyi-Jones@arm.com 97310027SChris.Adeniyi-Jones@arm.com 97410027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 97510793Sbrandon.potter@amd.comtemplate <class OS> 97610027SChris.Adeniyi-Jones@arm.comSyscallReturn 97710027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 97810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 97910027SChris.Adeniyi-Jones@arm.com{ 98010027SChris.Adeniyi-Jones@arm.com int index = 0; 98110027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 98210027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 98310027SChris.Adeniyi-Jones@arm.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 98410027SChris.Adeniyi-Jones@arm.com 98510027SChris.Adeniyi-Jones@arm.com std::string path; 98610027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 98710027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 98810027SChris.Adeniyi-Jones@arm.com return -EFAULT; 98910027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 99010027SChris.Adeniyi-Jones@arm.com 99110027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 99210027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 99310027SChris.Adeniyi-Jones@arm.com 99410027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 99510027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 99610027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 99710027SChris.Adeniyi-Jones@arm.com#else 99810027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 99910027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 100010027SChris.Adeniyi-Jones@arm.com#endif 100110027SChris.Adeniyi-Jones@arm.com 100210027SChris.Adeniyi-Jones@arm.com if (result < 0) 10031999SN/A return -errno; 10041999SN/A 10051999SN/A copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10063114Sgblack@eecs.umich.edu 10072680Sktlim@umich.edu return 0; 10081999SN/A} 10096701Sgblack@eecs.umich.edu 101010931Sbrandon.potter@amd.com 10116701Sgblack@eecs.umich.edu/// Target fstat64() handler. 101210931Sbrandon.potter@amd.comtemplate <class OS> 101310932Sbrandon.potter@amd.comSyscallReturn 101410931Sbrandon.potter@amd.comfstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10151999SN/A ThreadContext *tc) 10161999SN/A{ 10172764Sstever@eecs.umich.edu int index = 0; 10182064SN/A int tgt_fd = process->getSyscallArg(tc, index); 101910931Sbrandon.potter@amd.com Addr bufPtr = process->getSyscallArg(tc, index); 10202064SN/A 10212064SN/A int sim_fd = process->getSimFD(tgt_fd); 102210931Sbrandon.potter@amd.com if (sim_fd < 0) 10232064SN/A return -EBADF; 10241999SN/A 10251999SN/A#if NO_STAT64 10262218SN/A struct stat hostBuf; 10271999SN/A int result = fstat(sim_fd, &hostBuf); 102810931Sbrandon.potter@amd.com#else 10291999SN/A struct stat64 hostBuf; 10301999SN/A int result = fstat64(sim_fd, &hostBuf); 10311999SN/A#endif 10321999SN/A 10331999SN/A if (result < 0) 1034378SN/A return -errno; 1035360SN/A 10361450SN/A copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10373114Sgblack@eecs.umich.edu 10382680Sktlim@umich.edu return 0; 1039360SN/A} 1040360SN/A 1041360SN/A 10426701Sgblack@eecs.umich.edu/// Target lstat() handler. 10438852Sandreas.hansson@arm.comtemplate <class OS> 10446701Sgblack@eecs.umich.eduSyscallReturn 10456701Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10466701Sgblack@eecs.umich.edu ThreadContext *tc) 10476701Sgblack@eecs.umich.edu{ 1048360SN/A std::string path; 10493669Sbinkertn@umich.edu 10503669Sbinkertn@umich.edu int index = 0; 10513669Sbinkertn@umich.edu if (!tc->getMemProxy().tryReadString(path, 1052360SN/A process->getSyscallArg(tc, index))) { 1053360SN/A return -EFAULT; 1054360SN/A } 1055360SN/A Addr bufPtr = process->getSyscallArg(tc, index); 10561458SN/A 1057360SN/A // Adjust path for current working directory 10588706Sandreas.hansson@arm.com path = process->fullPath(path); 1059360SN/A 10601458SN/A struct stat hostBuf; 1061360SN/A int result = lstat(path.c_str(), &hostBuf); 1062360SN/A 10631999SN/A if (result < 0) 10641999SN/A return -errno; 10651999SN/A 10663114Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10672680Sktlim@umich.edu 10681999SN/A return 0; 10691999SN/A} 10701999SN/A 10716701Sgblack@eecs.umich.edu/// Target lstat64() handler. 10728852Sandreas.hansson@arm.comtemplate <class OS> 10736701Sgblack@eecs.umich.eduSyscallReturn 10746701Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10756701Sgblack@eecs.umich.edu ThreadContext *tc) 10766701Sgblack@eecs.umich.edu{ 10771999SN/A std::string path; 10783669Sbinkertn@umich.edu 10793669Sbinkertn@umich.edu int index = 0; 10803669Sbinkertn@umich.edu if (!tc->getMemProxy().tryReadString(path, 10812764Sstever@eecs.umich.edu process->getSyscallArg(tc, index))) { 10822064SN/A return -EFAULT; 10832064SN/A } 10842064SN/A Addr bufPtr = process->getSyscallArg(tc, index); 10851999SN/A 10861999SN/A // Adjust path for current working directory 10872064SN/A path = process->fullPath(path); 10881999SN/A 10891999SN/A#if NO_STAT64 10901999SN/A struct stat hostBuf; 10911999SN/A int result = lstat(path.c_str(), &hostBuf); 10928706Sandreas.hansson@arm.com#else 10931999SN/A struct stat64 hostBuf; 10941999SN/A int result = lstat64(path.c_str(), &hostBuf); 10951999SN/A#endif 10961999SN/A 1097378SN/A if (result < 0) 1098360SN/A return -errno; 10991450SN/A 11003114Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11012680Sktlim@umich.edu 1102360SN/A return 0; 11036701Sgblack@eecs.umich.edu} 110410931Sbrandon.potter@amd.com 11056701Sgblack@eecs.umich.edu/// Target fstat() handler. 1106360SN/Atemplate <class OS> 110711380Salexandru.dutu@amd.comSyscallReturn 1108360SN/AfstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 110910932Sbrandon.potter@amd.com ThreadContext *tc) 111010931Sbrandon.potter@amd.com{ 11111458SN/A int index = 0; 1112360SN/A int tgt_fd = process->getSyscallArg(tc, index); 1113360SN/A Addr bufPtr = process->getSyscallArg(tc, index); 111410931Sbrandon.potter@amd.com 1115360SN/A DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1116360SN/A 11171458SN/A int sim_fd = process->getSimFD(tgt_fd); 1118360SN/A if (sim_fd < 0) 111910931Sbrandon.potter@amd.com return -EBADF; 11202021SN/A 11211458SN/A struct stat hostBuf; 1122360SN/A int result = fstat(sim_fd, &hostBuf); 1123360SN/A 1124360SN/A if (result < 0) 11251706SN/A return -errno; 11261706SN/A 11271706SN/A copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11283114Sgblack@eecs.umich.edu 11292680Sktlim@umich.edu return 0; 11301706SN/A} 113111799Sbrandon.potter@amd.com 113211799Sbrandon.potter@amd.com 113311799Sbrandon.potter@amd.com/// Target statfs() handler. 11341706SN/Atemplate <class OS> 11351706SN/ASyscallReturn 11366701Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11378852Sandreas.hansson@arm.com ThreadContext *tc) 11386701Sgblack@eecs.umich.edu{ 11396701Sgblack@eecs.umich.edu std::string path; 11406701Sgblack@eecs.umich.edu 11416701Sgblack@eecs.umich.edu int index = 0; 11421706SN/A if (!tc->getMemProxy().tryReadString(path, 11433669Sbinkertn@umich.edu process->getSyscallArg(tc, index))) { 11443669Sbinkertn@umich.edu return -EFAULT; 11453669Sbinkertn@umich.edu } 11461706SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11471706SN/A 11481706SN/A // Adjust path for current working directory 11491706SN/A path = process->fullPath(path); 11502218SN/A 11511706SN/A struct statfs hostBuf; 115211759Sbrandon.potter@amd.com int result = statfs(path.c_str(), &hostBuf); 115311799Sbrandon.potter@amd.com 11541706SN/A if (result < 0) 11551706SN/A return -errno; 11561706SN/A 11571706SN/A OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11581706SN/A 11591706SN/A return 0; 11601706SN/A} 11613114Sgblack@eecs.umich.edu 11622680Sktlim@umich.edu 11631706SN/A/// Target fstatfs() handler. 11646701Sgblack@eecs.umich.edutemplate <class OS> 116510931Sbrandon.potter@amd.comSyscallReturn 11666701Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11671706SN/A ThreadContext *tc) 116810932Sbrandon.potter@amd.com{ 116910931Sbrandon.potter@amd.com int index = 0; 11701706SN/A int tgt_fd = process->getSyscallArg(tc, index); 11711706SN/A Addr bufPtr = process->getSyscallArg(tc, index); 11721706SN/A 117310931Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 11741706SN/A if (sim_fd < 0) 11751706SN/A return -EBADF; 11762218SN/A 11771706SN/A struct statfs hostBuf; 117811759Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 11791706SN/A 11801706SN/A if (result < 0) 11811706SN/A return -errno; 11821706SN/A 11831706SN/A OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11841999SN/A 11851999SN/A return 0; 11861999SN/A} 11873114Sgblack@eecs.umich.edu 11882680Sktlim@umich.edu 11891999SN/A/// Target writev() handler. 11906701Sgblack@eecs.umich.edutemplate <class OS> 119110931Sbrandon.potter@amd.comSyscallReturn 119210931Sbrandon.potter@amd.comwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 119310932Sbrandon.potter@amd.com ThreadContext *tc) 119410931Sbrandon.potter@amd.com{ 11951999SN/A int index = 0; 11961999SN/A int tgt_fd = process->getSyscallArg(tc, index); 11978852Sandreas.hansson@arm.com 11986701Sgblack@eecs.umich.edu int sim_fd = process->getSimFD(tgt_fd); 11996701Sgblack@eecs.umich.edu if (sim_fd < 0) 12001999SN/A return -EBADF; 12016227Snate@binkert.org 12021999SN/A SETranslatingPortProxy &p = tc->getMemProxy(); 12032461SN/A uint64_t tiov_base = process->getSyscallArg(tc, index); 12048852Sandreas.hansson@arm.com size_t count = process->getSyscallArg(tc, index); 12058852Sandreas.hansson@arm.com struct iovec hiov[count]; 12068737Skoansin.tan@gmail.com for (size_t i = 0; i < count; ++i) { 12071999SN/A typename OS::tgt_iovec tiov; 12088852Sandreas.hansson@arm.com 12098852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12101999SN/A (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12111999SN/A hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 121210931Sbrandon.potter@amd.com hiov[i].iov_base = new char [hiov[i].iov_len]; 12131999SN/A p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12146227Snate@binkert.org hiov[i].iov_len); 12151999SN/A } 12161999SN/A 12171999SN/A int result = writev(sim_fd, hiov, count); 12182218SN/A 12191999SN/A for (size_t i = 0; i < count; ++i) 122010629Sjthestness@gmail.com delete [] (char *)hiov[i].iov_base; 12211999SN/A 12221999SN/A if (result < 0) 122311385Sbrandon.potter@amd.com return -errno; 1224360SN/A 12251450SN/A return result; 122611385Sbrandon.potter@amd.com} 122711385Sbrandon.potter@amd.com 1228360SN/A/// Real mmap handler. 12296701Sgblack@eecs.umich.edutemplate <class OS> 12306701Sgblack@eecs.umich.eduSyscallReturn 12316701Sgblack@eecs.umich.edummapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 123211383Sbrandon.potter@amd.com bool is_mmap2) 123311383Sbrandon.potter@amd.com{ 12348324Ssteve.reinhardt@amd.com int index = 0; 123510486Stjablin@gmail.com Addr start = p->getSyscallArg(tc, index); 1236360SN/A uint64_t length = p->getSyscallArg(tc, index); 123711385Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 123811385Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12399008Sgblack@eecs.umich.edu int tgt_fd = p->getSyscallArg(tc, index); 124011383Sbrandon.potter@amd.com int offset = p->getSyscallArg(tc, index); 124111383Sbrandon.potter@amd.com 124211383Sbrandon.potter@amd.com if (is_mmap2) 124311383Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 124411383Sbrandon.potter@amd.com 124511383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 124611383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 124711383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 124811383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 12498324Ssteve.reinhardt@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 125011383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 125111383Sbrandon.potter@amd.com !length) { 125211383Sbrandon.potter@amd.com return -EINVAL; 125311383Sbrandon.potter@amd.com } 125411383Sbrandon.potter@amd.com 125511383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 125611383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 125711383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 125811383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 125911383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 126011383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 126111383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 126211383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 126311383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 126411383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 126511383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 126611383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 126711383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 126811383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 126911383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 127011383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 127111383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 127211383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 127311383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 12748324Ssteve.reinhardt@amd.com // a call to msync, but that again would require more information 12755877Shsul@eecs.umich.edu // than we currently maintain. 127610486Stjablin@gmail.com warn("mmap: writing to shared mmap region is currently " 127710486Stjablin@gmail.com "unsupported. The write succeeds on the target, but it " 127811383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 127911383Sbrandon.potter@amd.com } 128011383Sbrandon.potter@amd.com 128111624Smichael.lebeane@amd.com length = roundUp(length, TheISA::PageBytes); 128211624Smichael.lebeane@amd.com 128311624Smichael.lebeane@amd.com int sim_fd = -1; 128411624Smichael.lebeane@amd.com uint8_t *pmap = nullptr; 128511624Smichael.lebeane@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 128611624Smichael.lebeane@amd.com sim_fd = p->getSimFD(tgt_fd); 128711624Smichael.lebeane@amd.com if (sim_fd < 0) 128811624Smichael.lebeane@amd.com return -EBADF; 128911624Smichael.lebeane@amd.com 129011624Smichael.lebeane@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 129111624Smichael.lebeane@amd.com sim_fd, offset); 129211383Sbrandon.potter@amd.com 129311383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 1294360SN/A warn("mmap: failed to map file into host address space"); 129511383Sbrandon.potter@amd.com return -errno; 129611383Sbrandon.potter@amd.com } 12978600Ssteve.reinhardt@amd.com } 129811383Sbrandon.potter@amd.com 129911383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 130011383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 13018600Ssteve.reinhardt@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 13022544SN/A start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 13032544SN/A p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 130411383Sbrandon.potter@amd.com } 130511383Sbrandon.potter@amd.com 130611383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 130711386Ssteve.reinhardt@amd.com start, start + length - 1); 130811386Ssteve.reinhardt@amd.com 130911383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 131011383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 131111383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 131211383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 131311383Sbrandon.potter@amd.com if (clobber) { 131411383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 131511383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 131611383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 131711383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 131811383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 131911383Sbrandon.potter@amd.com } 132011383Sbrandon.potter@amd.com } 132111383Sbrandon.potter@amd.com 132211383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 132311383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 13248600Ssteve.reinhardt@amd.com // fatal and bail out of the simulation. 13256672Sgblack@eecs.umich.edu p->allocateMem(start, length, clobber); 13268600Ssteve.reinhardt@amd.com 132711383Sbrandon.potter@amd.com // Transfer content into target address space. 132811383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 132911383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 13308601Ssteve.reinhardt@amd.com // In general, we should zero the mapped area for anonymous mappings, 13312544SN/A // with something like: 133211383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 133311383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 133411383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 133511383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 133611383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 133711383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 133811383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 133911383Sbrandon.potter@amd.com } else { 134011383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 134111383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 134211383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 134311383Sbrandon.potter@amd.com // the host into the target address space. 134411383Sbrandon.potter@amd.com struct stat file_stat; 134511383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 134611383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 134711383Sbrandon.potter@amd.com 134811383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 134911383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 135011383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 135111383Sbrandon.potter@amd.com // on the specified offset into the file. 135211383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 135311383Sbrandon.potter@amd.com length); 135411383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 135511383Sbrandon.potter@amd.com 135611383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 135711383Sbrandon.potter@amd.com munmap(pmap, length); 135811383Sbrandon.potter@amd.com 135911383Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 136011383Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 136111383Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 136211383Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 136311383Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 136411392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 136511392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 136611392Sbrandon.potter@amd.com if (interpreter) { 136711392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 136811392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 136911392Sbrandon.potter@amd.com 137011392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 137111392Sbrandon.potter@amd.com 137211392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 137311392Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 137411392Sbrandon.potter@amd.com 137511392Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(fde->filename); 137611392Sbrandon.potter@amd.com 137711392Sbrandon.potter@amd.com if (lib) { 137811392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 137911392Sbrandon.potter@amd.com lib->textBase(), start); 138011392Sbrandon.potter@amd.com } 138111392Sbrandon.potter@amd.com } 138211392Sbrandon.potter@amd.com } 138311392Sbrandon.potter@amd.com 138411392Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 138511392Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 138611392Sbrandon.potter@amd.com // execution (hopefully). 138711392Sbrandon.potter@amd.com } 138811392Sbrandon.potter@amd.com 138911383Sbrandon.potter@amd.com return start; 139011383Sbrandon.potter@amd.com} 139111383Sbrandon.potter@amd.com 139211383Sbrandon.potter@amd.comtemplate <class OS> 139311383Sbrandon.potter@amd.comSyscallReturn 13941458SN/Apwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1395360SN/A{ 1396360SN/A int index = 0; 139711593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 139811593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 139911593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 140011593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 140111593Santhony.gutierrez@amd.com 140211593Santhony.gutierrez@amd.com int sim_fd = p->getSimFD(tgt_fd); 140311593Santhony.gutierrez@amd.com if (sim_fd < 0) 140411593Santhony.gutierrez@amd.com return -EBADF; 140511593Santhony.gutierrez@amd.com 140611593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 140711593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 140811593Santhony.gutierrez@amd.com 140911593Santhony.gutierrez@amd.com int bytes_written = pwrite64(sim_fd, bufArg.bufferPtr(), nbytes, offset); 141011593Santhony.gutierrez@amd.com 141111593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 141211593Santhony.gutierrez@amd.com} 141311593Santhony.gutierrez@amd.com 141411594Santhony.gutierrez@amd.com/// Target mmap() handler. 141511593Santhony.gutierrez@amd.comtemplate <class OS> 141611593Santhony.gutierrez@amd.comSyscallReturn 141711593Santhony.gutierrez@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 141811593Santhony.gutierrez@amd.com{ 141911385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 142011385Sbrandon.potter@amd.com} 142111385Sbrandon.potter@amd.com 142211385Sbrandon.potter@amd.com/// Target mmap2() handler. 142311385Sbrandon.potter@amd.comtemplate <class OS> 142411385Sbrandon.potter@amd.comSyscallReturn 142511385Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 142611385Sbrandon.potter@amd.com{ 142711385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 142811385Sbrandon.potter@amd.com} 142911385Sbrandon.potter@amd.com 143011385Sbrandon.potter@amd.com/// Target getrlimit() handler. 143111385Sbrandon.potter@amd.comtemplate <class OS> 143211385Sbrandon.potter@amd.comSyscallReturn 143311385Sbrandon.potter@amd.comgetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 143411385Sbrandon.potter@amd.com ThreadContext *tc) 1435378SN/A{ 1436360SN/A int index = 0; 14371450SN/A unsigned resource = process->getSyscallArg(tc, index); 14383114Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 14392680Sktlim@umich.edu 1440360SN/A switch (resource) { 14416701Sgblack@eecs.umich.edu case OS::TGT_RLIMIT_STACK: 14426701Sgblack@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14436701Sgblack@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 1444360SN/A rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 1445360SN/A rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14462064SN/A break; 14475877Shsul@eecs.umich.edu 14482064SN/A case OS::TGT_RLIMIT_DATA: 14498737Skoansin.tan@gmail.com // max data segment size in bytes: make up a number 14508737Skoansin.tan@gmail.com rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14512064SN/A rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 1452360SN/A rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14535877Shsul@eecs.umich.edu break; 14545877Shsul@eecs.umich.edu 14555877Shsul@eecs.umich.edu default: 14568737Skoansin.tan@gmail.com warn("getrlimit: unimplemented resource %d", resource); 14578737Skoansin.tan@gmail.com return -EINVAL; 14585877Shsul@eecs.umich.edu break; 14595877Shsul@eecs.umich.edu } 14602064SN/A 146110794Sbrandon.potter@amd.com rlp.copyOut(tc->getMemProxy()); 146210794Sbrandon.potter@amd.com return 0; 14632064SN/A} 1464360SN/A 1465360SN/A/// Target clock_gettime() function. 14668706Sandreas.hansson@arm.comtemplate <class OS> 14671458SN/ASyscallReturn 1468360SN/Aclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1469360SN/A{ 147010796Sbrandon.potter@amd.com int index = 1; 147110796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 147210796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 147310796Sbrandon.potter@amd.com 147410796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 147510796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 147610796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 147710796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 147810796Sbrandon.potter@amd.com 147910796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 148010796Sbrandon.potter@amd.com 148110796Sbrandon.potter@amd.com return 0; 148210796Sbrandon.potter@amd.com} 148310796Sbrandon.potter@amd.com 148410796Sbrandon.potter@amd.com/// Target clock_getres() function. 148510796Sbrandon.potter@amd.comtemplate <class OS> 148610796Sbrandon.potter@amd.comSyscallReturn 148710796Sbrandon.potter@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 148810796Sbrandon.potter@amd.com{ 148911337SMichael.Lebeane@amd.com int index = 1; 149011337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 149111337SMichael.Lebeane@amd.com 149211337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 149311337SMichael.Lebeane@amd.com tp->tv_sec = 0; 149411337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 149511337SMichael.Lebeane@amd.com 149611337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 149711337SMichael.Lebeane@amd.com 149811337SMichael.Lebeane@amd.com return 0; 149911337SMichael.Lebeane@amd.com} 150011337SMichael.Lebeane@amd.com 150111337SMichael.Lebeane@amd.com/// Target gettimeofday() handler. 150211337SMichael.Lebeane@amd.comtemplate <class OS> 150311337SMichael.Lebeane@amd.comSyscallReturn 150411337SMichael.Lebeane@amd.comgettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 150511337SMichael.Lebeane@amd.com ThreadContext *tc) 1506378SN/A{ 1507360SN/A int index = 0; 15081450SN/A TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 15093114Sgblack@eecs.umich.edu 15102680Sktlim@umich.edu getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1511360SN/A tp->tv_sec += seconds_since_epoch; 15126701Sgblack@eecs.umich.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 15136701Sgblack@eecs.umich.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1514360SN/A 151510796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 1516360SN/A 15176109Ssanchezd@stanford.edu return 0; 15186109Ssanchezd@stanford.edu} 1519360SN/A 15208706Sandreas.hansson@arm.com 1521360SN/A/// Target utimes() handler. 15221458SN/Atemplate <class OS> 1523360SN/ASyscallReturn 1524360SN/AutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1525360SN/A ThreadContext *tc) 15261999SN/A{ 15271999SN/A std::string path; 15281999SN/A 15293114Sgblack@eecs.umich.edu int index = 0; 15302680Sktlim@umich.edu if (!tc->getMemProxy().tryReadString(path, 15311999SN/A process->getSyscallArg(tc, index))) { 15321999SN/A return -EFAULT; 15331999SN/A } 15346701Sgblack@eecs.umich.edu 15358852Sandreas.hansson@arm.com TypedBufferArg<typename OS::timeval [2]> 15366701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 15376701Sgblack@eecs.umich.edu tp.copyIn(tc->getMemProxy()); 15386701Sgblack@eecs.umich.edu 15391999SN/A struct timeval hostTimeval[2]; 15406701Sgblack@eecs.umich.edu for (int i = 0; i < 2; ++i) 15416701Sgblack@eecs.umich.edu { 15428706Sandreas.hansson@arm.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15431999SN/A hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15441999SN/A } 15451999SN/A 15461999SN/A // Adjust path for current working directory 15478737Skoansin.tan@gmail.com path = process->fullPath(path); 15488737Skoansin.tan@gmail.com 15491999SN/A int result = utimes(path.c_str(), hostTimeval); 15503669Sbinkertn@umich.edu 15513669Sbinkertn@umich.edu if (result < 0) 15523669Sbinkertn@umich.edu return -errno; 15533669Sbinkertn@umich.edu 15541999SN/A return 0; 15551999SN/A} 15561999SN/A/// Target getrusage() function. 15571999SN/Atemplate <class OS> 15581999SN/ASyscallReturn 15591999SN/AgetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15601999SN/A ThreadContext *tc) 1561378SN/A{ 1562360SN/A int index = 0; 15631450SN/A int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 15643114Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 15652680Sktlim@umich.edu 1566360SN/A rup->ru_utime.tv_sec = 0; 15676701Sgblack@eecs.umich.edu rup->ru_utime.tv_usec = 0; 15686701Sgblack@eecs.umich.edu rup->ru_stime.tv_sec = 0; 15696701Sgblack@eecs.umich.edu rup->ru_stime.tv_usec = 0; 1570360SN/A rup->ru_maxrss = 0; 15713670Sbinkertn@umich.edu rup->ru_ixrss = 0; 15723670Sbinkertn@umich.edu rup->ru_idrss = 0; 1573360SN/A rup->ru_isrss = 0; 1574360SN/A rup->ru_minflt = 0; 1575360SN/A rup->ru_majflt = 0; 1576360SN/A rup->ru_nswap = 0; 1577360SN/A rup->ru_inblock = 0; 1578360SN/A rup->ru_oublock = 0; 1579360SN/A rup->ru_msgsnd = 0; 1580360SN/A rup->ru_msgrcv = 0; 1581360SN/A rup->ru_nsignals = 0; 1582360SN/A rup->ru_nvcsw = 0; 1583360SN/A rup->ru_nivcsw = 0; 1584360SN/A 1585360SN/A switch (who) { 1586360SN/A case OS::TGT_RUSAGE_SELF: 1587360SN/A getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 1588360SN/A rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 1589360SN/A rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 15903670Sbinkertn@umich.edu break; 15913670Sbinkertn@umich.edu 159210796Sbrandon.potter@amd.com case OS::TGT_RUSAGE_CHILDREN: 15938737Skoansin.tan@gmail.com // do nothing. We have no child processes, so they take no time. 15948737Skoansin.tan@gmail.com break; 15953670Sbinkertn@umich.edu 15963670Sbinkertn@umich.edu default: 15973670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 15983670Sbinkertn@umich.edu // plow ahead 15993670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 16003670Sbinkertn@umich.edu who); 16013670Sbinkertn@umich.edu } 16023670Sbinkertn@umich.edu 16033670Sbinkertn@umich.edu rup.copyOut(tc->getMemProxy()); 16043670Sbinkertn@umich.edu 16053670Sbinkertn@umich.edu return 0; 16063670Sbinkertn@umich.edu} 16073670Sbinkertn@umich.edu 16088706Sandreas.hansson@arm.com/// Target times() function. 1609360SN/Atemplate <class OS> 16101458SN/ASyscallReturn 1611360SN/AtimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1612360SN/A ThreadContext *tc) 16136683Stjones1@inf.ed.ac.uk{ 16146683Stjones1@inf.ed.ac.uk int index = 0; 16156683Stjones1@inf.ed.ac.uk TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 16166683Stjones1@inf.ed.ac.uk 16176683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 16186683Stjones1@inf.ed.ac.uk int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16196701Sgblack@eecs.umich.edu bufp->tms_utime = clocks; 16206701Sgblack@eecs.umich.edu bufp->tms_stime = 0; 16216683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 16226683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 16237823Ssteve.reinhardt@amd.com 16246683Stjones1@inf.ed.ac.uk // Convert to host endianness 16256683Stjones1@inf.ed.ac.uk bufp->tms_utime = TheISA::htog(bufp->tms_utime); 16266683Stjones1@inf.ed.ac.uk 16276683Stjones1@inf.ed.ac.uk // Write back 16286683Stjones1@inf.ed.ac.uk bufp.copyOut(tc->getMemProxy()); 16296683Stjones1@inf.ed.ac.uk 16308737Skoansin.tan@gmail.com // Return clock ticks since system boot 16316683Stjones1@inf.ed.ac.uk return clocks; 16326683Stjones1@inf.ed.ac.uk} 16338706Sandreas.hansson@arm.com 16346683Stjones1@inf.ed.ac.uk/// Target time() function. 16356683Stjones1@inf.ed.ac.uktemplate <class OS> 16366683Stjones1@inf.ed.ac.ukSyscallReturn 16376683Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16382553SN/A ThreadContext *tc) 16396684Stjones1@inf.ed.ac.uk{ 16406684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 16416684Stjones1@inf.ed.ac.uk getElapsedTimeMicro(sec, usec); 16426684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 16436684Stjones1@inf.ed.ac.uk 16446684Stjones1@inf.ed.ac.uk int index = 0; 16456684Stjones1@inf.ed.ac.uk Addr taddr = (Addr)process->getSyscallArg(tc, index); 164610796Sbrandon.potter@amd.com if (taddr != 0) { 16476684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 16486684Stjones1@inf.ed.ac.uk t = TheISA::htog(t); 16496701Sgblack@eecs.umich.edu SETranslatingPortProxy &p = tc->getMemProxy(); 16506701Sgblack@eecs.umich.edu p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 165111321Ssteve.reinhardt@amd.com } 16526684Stjones1@inf.ed.ac.uk return sec; 16538737Skoansin.tan@gmail.com} 16548852Sandreas.hansson@arm.com 16558852Sandreas.hansson@arm.com 16566684Stjones1@inf.ed.ac.uk#endif // __SIM_SYSCALL_EMUL_HH__ 16576684Stjones1@inf.ed.ac.uk