syscall_emul.hh revision 10794
1360SN/A/* 210027SChris.Adeniyi-Jones@arm.com * Copyright (c) 2012-2013 ARM Limited 310027SChris.Adeniyi-Jones@arm.com * All rights reserved 410027SChris.Adeniyi-Jones@arm.com * 510027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 610027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 710027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 810027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 910027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1010027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1110027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1210027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1310027SChris.Adeniyi-Jones@arm.com * 141458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 15360SN/A * All rights reserved. 16360SN/A * 17360SN/A * Redistribution and use in source and binary forms, with or without 18360SN/A * modification, are permitted provided that the following conditions are 19360SN/A * met: redistributions of source code must retain the above copyright 20360SN/A * notice, this list of conditions and the following disclaimer; 21360SN/A * redistributions in binary form must reproduce the above copyright 22360SN/A * notice, this list of conditions and the following disclaimer in the 23360SN/A * documentation and/or other materials provided with the distribution; 24360SN/A * neither the name of the copyright holders nor the names of its 25360SN/A * contributors may be used to endorse or promote products derived from 26360SN/A * this software without specific prior written permission. 27360SN/A * 28360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392665Ssaidi@eecs.umich.edu * 402665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 412665Ssaidi@eecs.umich.edu * Kevin Lim 42360SN/A */ 43360SN/A 441354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 451354SN/A#define __SIM_SYSCALL_EMUL_HH__ 46360SN/A 472764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 489202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 499202Spalle@lyckegaard.dk defined(__NetBSD__)) 502064SN/A 51360SN/A/// 52360SN/A/// @file syscall_emul.hh 53360SN/A/// 54360SN/A/// This file defines objects used to emulate syscalls from the target 55360SN/A/// application on the host machine. 56360SN/A 571809SN/A#ifdef __CYGWIN32__ 585543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 591809SN/A#endif 603113Sgblack@eecs.umich.edu#include <sys/stat.h> 618229Snate@binkert.org#include <sys/time.h> 628229Snate@binkert.org#include <sys/uio.h> 633113Sgblack@eecs.umich.edu#include <fcntl.h> 647075Snate@binkert.org 658229Snate@binkert.org#include <cerrno> 667075Snate@binkert.org#include <string> 67360SN/A 682474SN/A#include "base/chunk_generator.hh" 695543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 702462SN/A#include "base/misc.hh" 711354SN/A#include "base/trace.hh" 726216Snate@binkert.org#include "base/types.hh" 736658Snate@binkert.org#include "config/the_isa.hh" 742474SN/A#include "cpu/base.hh" 752680Sktlim@umich.edu#include "cpu/thread_context.hh" 768232Snate@binkert.org#include "debug/SyscallVerbose.hh" 778229Snate@binkert.org#include "mem/page_table.hh" 787678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 7910496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 808229Snate@binkert.org#include "sim/process.hh" 8110497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 828766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 836640Svince@csl.cornell.edu#include "sim/system.hh" 84360SN/A 85360SN/A/// 86360SN/A/// System call descriptor. 87360SN/A/// 88360SN/Aclass SyscallDesc { 89360SN/A 90360SN/A public: 91360SN/A 92378SN/A /// Typedef for target syscall handler functions. 931450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 943114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 95360SN/A 965543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 975543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 985543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 99360SN/A 100360SN/A /// Flag values for controlling syscall behavior. 101360SN/A enum Flags { 102360SN/A /// Don't set return regs according to funcPtr return value. 103360SN/A /// Used for syscalls with non-standard return conventions 1042680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 105360SN/A /// sigreturn). 106360SN/A SuppressReturnValue = 1 107360SN/A }; 108360SN/A 109360SN/A /// Constructor. 110360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 111360SN/A : name(_name), funcPtr(_funcPtr), flags(_flags) 112360SN/A { 113360SN/A } 114360SN/A 115360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1163114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 117360SN/A}; 118360SN/A 119360SN/A 120360SN/A////////////////////////////////////////////////////////////////////// 121360SN/A// 122360SN/A// The following emulation functions are generic enough that they 123360SN/A// don't need to be recompiled for different emulated OS's. They are 124360SN/A// defined in sim/syscall_emul.cc. 125360SN/A// 126360SN/A////////////////////////////////////////////////////////////////////// 127360SN/A 128360SN/A 129378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1301706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1313114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 132378SN/A 133378SN/A/// Handler for unimplemented syscalls that we never intend to 134378SN/A/// implement (signal handling, etc.) and should not affect the correct 135378SN/A/// behavior of the program. Print a warning only if the appropriate 136378SN/A/// trace flag is enabled. Return success to the target program. 1371706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1383114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1398149SChris.Emmons@ARM.comSyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num, 1408149SChris.Emmons@ARM.com LiveProcess *p, ThreadContext *tc); 141360SN/A 1426109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1431706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 145378SN/A 1466109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1476109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1486109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1496109Ssanchezd@stanford.edu 150378SN/A/// Target getpagesize() handler. 1511706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1523114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 153378SN/A 1545748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1555748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1565748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 157378SN/A 158378SN/A/// Target close() handler. 1591706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 161378SN/A 162378SN/A/// Target read() handler. 1631706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1643114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 165378SN/A 166378SN/A/// Target write() handler. 1671706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1683114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 169378SN/A 170378SN/A/// Target lseek() handler. 1711706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1723114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 173378SN/A 1744118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1754118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1764118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1774118Sgblack@eecs.umich.edu 178378SN/A/// Target munmap() handler. 1791706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1803114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 181378SN/A 182378SN/A/// Target gethostname() handler. 1831706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 1843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 185360SN/A 1865513SMichael.Adler@intel.com/// Target getcwd() handler. 1875513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 1885513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1895513SMichael.Adler@intel.com 19010203SAli.Saidi@ARM.com/// Target readlink() handler. 19110203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 19210203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 19310203SAli.Saidi@ARM.com int index = 0); 1945513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 1955513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1965513SMichael.Adler@intel.com 197511SN/A/// Target unlink() handler. 19810633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 19910633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc, 20010633Smichaelupton@gmail.com int index); 2011706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2023114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 203511SN/A 2045513SMichael.Adler@intel.com/// Target mkdir() handler. 2055513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2065513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2075513SMichael.Adler@intel.com 208511SN/A/// Target rename() handler. 2091706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2103114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2111706SN/A 2121706SN/A 2131706SN/A/// Target truncate() handler. 2141706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2153114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2161706SN/A 2171706SN/A 2181706SN/A/// Target ftruncate() handler. 2191706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2203114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2211706SN/A 222511SN/A 2236703Svince@csl.cornell.edu/// Target truncate64() handler. 2246703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2256703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2266703Svince@csl.cornell.edu 2276685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2286685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2296685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2306685Stjones1@inf.ed.ac.uk 2316685Stjones1@inf.ed.ac.uk 2325513SMichael.Adler@intel.com/// Target umask() handler. 2335513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2345513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2355513SMichael.Adler@intel.com 2365513SMichael.Adler@intel.com 2371999SN/A/// Target chown() handler. 2381999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2393114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2401999SN/A 2411999SN/A 2421999SN/A/// Target fchown() handler. 2431999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2451999SN/A 2463079Sstever@eecs.umich.edu/// Target dup() handler. 2473079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2483114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2493079Sstever@eecs.umich.edu 2502093SN/A/// Target fnctl() handler. 2512093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2523114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2532093SN/A 2542687Sksewell@umich.edu/// Target fcntl64() handler. 2552687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2563114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2572687Sksewell@umich.edu 2582238SN/A/// Target setuid() handler. 2592238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2612238SN/A 2622238SN/A/// Target getpid() handler. 2632238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2643114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2652238SN/A 2662238SN/A/// Target getuid() handler. 2672238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2683114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2692238SN/A 2702238SN/A/// Target getgid() handler. 2712238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2723114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2732238SN/A 2742238SN/A/// Target getppid() handler. 2752238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2763114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2772238SN/A 2782238SN/A/// Target geteuid() handler. 2792238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2803114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2812238SN/A 2822238SN/A/// Target getegid() handler. 2832238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 2843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2852238SN/A 2866109Ssanchezd@stanford.edu/// Target clone() handler. 2876109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 2886109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2892238SN/A 2909455Smitch.hayenga+gem5@gmail.com/// Target access() handler 2919455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 2929455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 29310203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 29410203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 29510203SAli.Saidi@ARM.com int index); 2969455Smitch.hayenga+gem5@gmail.com 2979112Smarc.orr@gmail.com/// Futex system call 2989112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 2999112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3009112Smarc.orr@gmail.comtemplate <class OS> 3019112Smarc.orr@gmail.comSyscallReturn 3029112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3039112Smarc.orr@gmail.com ThreadContext *tc) 3049112Smarc.orr@gmail.com{ 3059112Smarc.orr@gmail.com int index_uaddr = 0; 3069112Smarc.orr@gmail.com int index_op = 1; 3079112Smarc.orr@gmail.com int index_val = 2; 3089112Smarc.orr@gmail.com int index_timeout = 3; 3099112Smarc.orr@gmail.com 3109112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3119112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3129112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3139112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3149112Smarc.orr@gmail.com 3159112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3169112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3179112Smarc.orr@gmail.com 3189112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3199112Smarc.orr@gmail.com uaddr, op, val); 3209112Smarc.orr@gmail.com 3219238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3229112Smarc.orr@gmail.com 3239112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3249112Smarc.orr@gmail.com if (timeout != 0) { 3259112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3269112Smarc.orr@gmail.com "we'll wait indefinitely"); 3279112Smarc.orr@gmail.com } 3289112Smarc.orr@gmail.com 3299112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3309112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3319112Smarc.orr@gmail.com int mem_val = *((int *)buf); 3329112Smarc.orr@gmail.com delete buf; 3339112Smarc.orr@gmail.com 3349112Smarc.orr@gmail.com if(val != mem_val) { 3359112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3369112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3379112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3389112Smarc.orr@gmail.com } 3399112Smarc.orr@gmail.com 3409112Smarc.orr@gmail.com // Queue the thread context 3419112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3429112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3439112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3449112Smarc.orr@gmail.com } else { 3459112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3469112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3479112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3489112Smarc.orr@gmail.com } 3499112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3509112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3519112Smarc.orr@gmail.com "thread context\n"); 3529112Smarc.orr@gmail.com tc->suspend(); 3539112Smarc.orr@gmail.com return 0; 3549112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3559112Smarc.orr@gmail.com int wokenUp = 0; 3569112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3579112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3589112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3599112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3609112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3619112Smarc.orr@gmail.com tcWaitList->pop_front(); 3629112Smarc.orr@gmail.com wokenUp++; 3639112Smarc.orr@gmail.com } 3649112Smarc.orr@gmail.com if(tcWaitList->empty()) { 3659112Smarc.orr@gmail.com futex_map.erase(uaddr); 3669112Smarc.orr@gmail.com delete tcWaitList; 3679112Smarc.orr@gmail.com } 3689112Smarc.orr@gmail.com } 3699112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3709112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3719112Smarc.orr@gmail.com return wokenUp; 3729112Smarc.orr@gmail.com } else { 3739238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3749112Smarc.orr@gmail.com return 0; 3759112Smarc.orr@gmail.com } 3769112Smarc.orr@gmail.com 3779112Smarc.orr@gmail.com} 3789112Smarc.orr@gmail.com 3792238SN/A 3802238SN/A/// Pseudo Funcs - These functions use a different return convension, 3812238SN/A/// returning a second value in a register other than the normal return register 3822238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3833114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3842238SN/A 3852238SN/A/// Target getpidPseudo() handler. 3862238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3873114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3882238SN/A 3892238SN/A/// Target getuidPseudo() handler. 3902238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3913114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3922238SN/A 3932238SN/A/// Target getgidPseudo() handler. 3942238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3953114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3962238SN/A 3972238SN/A 3981354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 3991354SN/Aconst int one_million = 1000000; 4001354SN/A 4011354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4021354SN/A/// by my reckoning. We want to keep this a constant (not use the 4031354SN/A/// real-world time) to keep simulations repeatable. 4041354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4051354SN/A 4061354SN/A/// Helper function to convert current elapsed time to seconds and 4071354SN/A/// microseconds. 4081354SN/Atemplate <class T1, class T2> 4091354SN/Avoid 4101354SN/AgetElapsedTime(T1 &sec, T2 &usec) 4111354SN/A{ 4127823Ssteve.reinhardt@amd.com int elapsed_usecs = curTick() / SimClock::Int::us; 4131354SN/A sec = elapsed_usecs / one_million; 4141354SN/A usec = elapsed_usecs % one_million; 4151354SN/A} 4161354SN/A 417360SN/A////////////////////////////////////////////////////////////////////// 418360SN/A// 419360SN/A// The following emulation functions are generic, but need to be 420360SN/A// templated to account for differences in types, constants, etc. 421360SN/A// 422360SN/A////////////////////////////////////////////////////////////////////// 423360SN/A 4243113Sgblack@eecs.umich.edu#if NO_STAT64 4253113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4263113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4273113Sgblack@eecs.umich.edu#else 4283113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4293113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4303113Sgblack@eecs.umich.edu#endif 4313113Sgblack@eecs.umich.edu 4323113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4333113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4343113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4353113Sgblack@eecs.umich.edu 4363113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4373113Sgblack@eecs.umich.edustatic void 4383113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4393113Sgblack@eecs.umich.edu{ 4404189Sgblack@eecs.umich.edu using namespace TheISA; 4414189Sgblack@eecs.umich.edu 4423113Sgblack@eecs.umich.edu if (fakeTTY) 4433113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4443113Sgblack@eecs.umich.edu else 4453113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4468737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4473113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4488737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4493277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4505515SMichael.Adler@intel.com if (fakeTTY) { 4515515SMichael.Adler@intel.com // Claim to be a character device 4525515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4535515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4545515SMichael.Adler@intel.com } 4558737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4563277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4578737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4583277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4598737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4603277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4618737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4623113Sgblack@eecs.umich.edu if (fakeTTY) 4633113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4643113Sgblack@eecs.umich.edu else 4653113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4668737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4673113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4688737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4693114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4708737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4713114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4728737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4733114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4748737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 4754061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4764061Sgblack@eecs.umich.edu // consistently across different hosts. 4774061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4788737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4793113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4808737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4813113Sgblack@eecs.umich.edu} 4823113Sgblack@eecs.umich.edu 4833113Sgblack@eecs.umich.edu// Same for stat64 4843113Sgblack@eecs.umich.edu 4853113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 4863113Sgblack@eecs.umich.edustatic void 4873113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4883113Sgblack@eecs.umich.edu{ 4894189Sgblack@eecs.umich.edu using namespace TheISA; 4904189Sgblack@eecs.umich.edu 4913113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4923113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4933113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 4948737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 4953113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 4968737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 4973113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 4988737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 4993113Sgblack@eecs.umich.edu#else 5003113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5013113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5023113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5033113Sgblack@eecs.umich.edu#endif 5043113Sgblack@eecs.umich.edu} 5053113Sgblack@eecs.umich.edu 5063113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5073113Sgblack@eecs.umich.edutemplate<class OS> 5083113Sgblack@eecs.umich.edustatic void 5098852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5103113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5113113Sgblack@eecs.umich.edu{ 5123113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5133113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5143113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5153113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5163113Sgblack@eecs.umich.edu} 5173113Sgblack@eecs.umich.edu 5183113Sgblack@eecs.umich.edutemplate<class OS> 5193113Sgblack@eecs.umich.edustatic void 5208852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5213113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5223113Sgblack@eecs.umich.edu{ 5233113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5243113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5256686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5263113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5273113Sgblack@eecs.umich.edu} 5283113Sgblack@eecs.umich.edu 529378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 530378SN/A/// only to find out if their stdout is a tty, to determine whether to 5319141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5329141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 533360SN/Atemplate <class OS> 5341450SN/ASyscallReturn 5353114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5362680Sktlim@umich.edu ThreadContext *tc) 537360SN/A{ 5386701Sgblack@eecs.umich.edu int index = 0; 5396701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 5406701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 541360SN/A 5421969SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 543360SN/A 54410496Ssteve.reinhardt@amd.com Process::FdMap *fdObj = process->sim_fd_obj(fd); 54510496Ssteve.reinhardt@amd.com 54610496Ssteve.reinhardt@amd.com if (fdObj == NULL) { 547360SN/A // doesn't map to any simulator fd: not a valid target fd 5481458SN/A return -EBADF; 549360SN/A } 550360SN/A 55110496Ssteve.reinhardt@amd.com if (fdObj->driver != NULL) { 55210496Ssteve.reinhardt@amd.com return fdObj->driver->ioctl(process, tc, req); 55310496Ssteve.reinhardt@amd.com } 55410496Ssteve.reinhardt@amd.com 5559141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 5561458SN/A return -ENOTTY; 5579141Smarc.orr@gmail.com } 558360SN/A 5599141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 5609141Smarc.orr@gmail.com fd, req, tc->pcState()); 5619141Smarc.orr@gmail.com return -ENOTTY; 562360SN/A} 563360SN/A 564360SN/Atemplate <class OS> 56510027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 5663114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 56710027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 568360SN/A{ 569360SN/A std::string path; 570360SN/A 5718852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 5726701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 5731458SN/A return -EFAULT; 574360SN/A 5756701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 5766701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 577360SN/A int hostFlags = 0; 578360SN/A 579360SN/A // translate open flags 580360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 581360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 582360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 583360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 584360SN/A } 585360SN/A } 586360SN/A 587360SN/A // any target flags left? 588360SN/A if (tgtFlags != 0) 5891706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 590360SN/A 591360SN/A#ifdef __CYGWIN32__ 592360SN/A hostFlags |= O_BINARY; 593360SN/A#endif 594360SN/A 5953669Sbinkertn@umich.edu // Adjust path for current working directory 5963669Sbinkertn@umich.edu path = process->fullPath(path); 5973669Sbinkertn@umich.edu 5981706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 5991706SN/A 60010496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 60110496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 60210496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 60310496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 60410496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 60510496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 60610496Ssteve.reinhardt@amd.com return -ENOENT; 60710496Ssteve.reinhardt@amd.com } 60810496Ssteve.reinhardt@amd.com 60910496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 61010496Ssteve.reinhardt@amd.com if (drv != NULL) { 61110496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 61210496Ssteve.reinhardt@amd.com // process if necessary. 61310496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 61410496Ssteve.reinhardt@amd.com } 61510496Ssteve.reinhardt@amd.com 61610496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 61710496Ssteve.reinhardt@amd.com // /dev/zero 61810496Ssteve.reinhardt@amd.com } 61910496Ssteve.reinhardt@amd.com 6205795Ssaidi@eecs.umich.edu int fd; 6219143Ssteve.reinhardt@amd.com int local_errno; 6229142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6239142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6249143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6255795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6269143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6275795Ssaidi@eecs.umich.edu } else { 6285795Ssaidi@eecs.umich.edu // open the file 6295795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6309143Ssteve.reinhardt@amd.com local_errno = errno; 6315795Ssaidi@eecs.umich.edu } 632360SN/A 6339143Ssteve.reinhardt@amd.com if (fd == -1) 6349143Ssteve.reinhardt@amd.com return -local_errno; 6359143Ssteve.reinhardt@amd.com 6369143Ssteve.reinhardt@amd.com return process->alloc_fd(fd, path.c_str(), hostFlags, mode, false); 637360SN/A} 638360SN/A 63910027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 64010027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 64110027SChris.Adeniyi-Jones@arm.comSyscallReturn 64210027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 64310027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 64410027SChris.Adeniyi-Jones@arm.com{ 64510027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 64610027SChris.Adeniyi-Jones@arm.com} 64710027SChris.Adeniyi-Jones@arm.com 64810027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 64910027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 65010027SChris.Adeniyi-Jones@arm.comSyscallReturn 65110027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 65210027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 65310027SChris.Adeniyi-Jones@arm.com{ 65410027SChris.Adeniyi-Jones@arm.com int index = 0; 65510027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 65610027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 65710027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 65810027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 65910027SChris.Adeniyi-Jones@arm.com} 66010027SChris.Adeniyi-Jones@arm.com 66110633Smichaelupton@gmail.com/// Target unlinkat() handler. 66210633Smichaelupton@gmail.comtemplate <class OS> 66310633Smichaelupton@gmail.comSyscallReturn 66410633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 66510633Smichaelupton@gmail.com ThreadContext *tc) 66610633Smichaelupton@gmail.com{ 66710633Smichaelupton@gmail.com int index = 0; 66810633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 66910633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 67010633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 67110633Smichaelupton@gmail.com 67210633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 67310633Smichaelupton@gmail.com} 67410633Smichaelupton@gmail.com 67510203SAli.Saidi@ARM.com/// Target facessat() handler 67610203SAli.Saidi@ARM.comtemplate <class OS> 67710203SAli.Saidi@ARM.comSyscallReturn 67810203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67910203SAli.Saidi@ARM.com ThreadContext *tc) 68010203SAli.Saidi@ARM.com{ 68110203SAli.Saidi@ARM.com int index = 0; 68210203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 68310203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 68410203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 68510203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 68610203SAli.Saidi@ARM.com} 68710203SAli.Saidi@ARM.com 68810203SAli.Saidi@ARM.com/// Target readlinkat() handler 68910203SAli.Saidi@ARM.comtemplate <class OS> 69010203SAli.Saidi@ARM.comSyscallReturn 69110203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69210203SAli.Saidi@ARM.com ThreadContext *tc) 69310203SAli.Saidi@ARM.com{ 69410203SAli.Saidi@ARM.com int index = 0; 69510203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 69610203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 69710203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 69810203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 69910203SAli.Saidi@ARM.com} 70010203SAli.Saidi@ARM.com 7016640Svince@csl.cornell.edu/// Target sysinfo() handler. 7026640Svince@csl.cornell.edutemplate <class OS> 7036640Svince@csl.cornell.eduSyscallReturn 7046640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7056640Svince@csl.cornell.edu ThreadContext *tc) 7066640Svince@csl.cornell.edu{ 7076640Svince@csl.cornell.edu 7086701Sgblack@eecs.umich.edu int index = 0; 7096701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 71010793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 7116640Svince@csl.cornell.edu 7126701Sgblack@eecs.umich.edu sysinfo->uptime=seconds_since_epoch; 7136701Sgblack@eecs.umich.edu sysinfo->totalram=process->system->memSize(); 7146640Svince@csl.cornell.edu 7158706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7166640Svince@csl.cornell.edu 7176701Sgblack@eecs.umich.edu return 0; 7186640Svince@csl.cornell.edu} 719360SN/A 7201999SN/A/// Target chmod() handler. 7211999SN/Atemplate <class OS> 7221999SN/ASyscallReturn 7233114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7242680Sktlim@umich.edu ThreadContext *tc) 7251999SN/A{ 7261999SN/A std::string path; 7271999SN/A 7286701Sgblack@eecs.umich.edu int index = 0; 7298852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7306701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7311999SN/A return -EFAULT; 7326701Sgblack@eecs.umich.edu } 7331999SN/A 7346701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7351999SN/A mode_t hostMode = 0; 7361999SN/A 7371999SN/A // XXX translate mode flags via OS::something??? 7381999SN/A hostMode = mode; 7391999SN/A 7403669Sbinkertn@umich.edu // Adjust path for current working directory 7413669Sbinkertn@umich.edu path = process->fullPath(path); 7423669Sbinkertn@umich.edu 7431999SN/A // do the chmod 7441999SN/A int result = chmod(path.c_str(), hostMode); 7451999SN/A if (result < 0) 7462218SN/A return -errno; 7471999SN/A 7481999SN/A return 0; 7491999SN/A} 7501999SN/A 7511999SN/A 7521999SN/A/// Target fchmod() handler. 7531999SN/Atemplate <class OS> 7541999SN/ASyscallReturn 7553114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7562680Sktlim@umich.edu ThreadContext *tc) 7571999SN/A{ 7586701Sgblack@eecs.umich.edu int index = 0; 7596701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 7601999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 7611999SN/A // doesn't map to any simulator fd: not a valid target fd 7621999SN/A return -EBADF; 7631999SN/A } 7641999SN/A 7656701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7661999SN/A mode_t hostMode = 0; 7671999SN/A 7681999SN/A // XXX translate mode flags via OS::someting??? 7691999SN/A hostMode = mode; 7701999SN/A 7711999SN/A // do the fchmod 7721999SN/A int result = fchmod(process->sim_fd(fd), hostMode); 7731999SN/A if (result < 0) 7742218SN/A return -errno; 7751999SN/A 7761999SN/A return 0; 7771999SN/A} 7781999SN/A 7795877Shsul@eecs.umich.edu/// Target mremap() handler. 7805877Shsul@eecs.umich.edutemplate <class OS> 7815877Shsul@eecs.umich.eduSyscallReturn 7825877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 7835877Shsul@eecs.umich.edu{ 7846701Sgblack@eecs.umich.edu int index = 0; 7856701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 7866701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 7876701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 7886701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 78910027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 79010027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 79110027SChris.Adeniyi-Jones@arm.com 79210027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 79310027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 7945877Shsul@eecs.umich.edu 79510318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 79610318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 7975877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 7985877Shsul@eecs.umich.edu return -EINVAL; 7995877Shsul@eecs.umich.edu } 8005877Shsul@eecs.umich.edu 80110486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 80210486Stjablin@gmail.com 8035877Shsul@eecs.umich.edu if (new_length > old_length) { 80410027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 80510027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8065877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8078601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8085877Shsul@eecs.umich.edu process->mmap_end += diff; 8095877Shsul@eecs.umich.edu return start; 8105877Shsul@eecs.umich.edu } else { 81110027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8125877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8135877Shsul@eecs.umich.edu return -ENOMEM; 8145877Shsul@eecs.umich.edu } else { 81510027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 81610027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 81710027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 81810027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 81910027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 82010027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8215877Shsul@eecs.umich.edu // add on the remaining unallocated pages 82210027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 82310027SChris.Adeniyi-Jones@arm.com new_length - old_length, 82410027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 82510027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 82610027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 82710027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 82810027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 82910027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 83010027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 83110027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 83210027SChris.Adeniyi-Jones@arm.com } 83310027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 83410027SChris.Adeniyi-Jones@arm.com return new_start; 8355877Shsul@eecs.umich.edu } 8365877Shsul@eecs.umich.edu } 8375877Shsul@eecs.umich.edu } else { 83810027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 83910027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 8408601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 84110027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 8425877Shsul@eecs.umich.edu } 8435877Shsul@eecs.umich.edu} 8441999SN/A 845378SN/A/// Target stat() handler. 846360SN/Atemplate <class OS> 8471450SN/ASyscallReturn 8483114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8492680Sktlim@umich.edu ThreadContext *tc) 850360SN/A{ 851360SN/A std::string path; 852360SN/A 8536701Sgblack@eecs.umich.edu int index = 0; 8548852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8556701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8566701Sgblack@eecs.umich.edu return -EFAULT; 8576701Sgblack@eecs.umich.edu } 8586701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 859360SN/A 8603669Sbinkertn@umich.edu // Adjust path for current working directory 8613669Sbinkertn@umich.edu path = process->fullPath(path); 8623669Sbinkertn@umich.edu 863360SN/A struct stat hostBuf; 864360SN/A int result = stat(path.c_str(), &hostBuf); 865360SN/A 866360SN/A if (result < 0) 8672218SN/A return -errno; 868360SN/A 8698706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 870360SN/A 8711458SN/A return 0; 872360SN/A} 873360SN/A 874360SN/A 8755074Ssaidi@eecs.umich.edu/// Target stat64() handler. 8765074Ssaidi@eecs.umich.edutemplate <class OS> 8775074Ssaidi@eecs.umich.eduSyscallReturn 8785074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 8795074Ssaidi@eecs.umich.edu ThreadContext *tc) 8805074Ssaidi@eecs.umich.edu{ 8815074Ssaidi@eecs.umich.edu std::string path; 8825074Ssaidi@eecs.umich.edu 8836701Sgblack@eecs.umich.edu int index = 0; 8848852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8856701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 8865074Ssaidi@eecs.umich.edu return -EFAULT; 8876701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 8885074Ssaidi@eecs.umich.edu 8895074Ssaidi@eecs.umich.edu // Adjust path for current working directory 8905074Ssaidi@eecs.umich.edu path = process->fullPath(path); 8915074Ssaidi@eecs.umich.edu 8925208Ssaidi@eecs.umich.edu#if NO_STAT64 8935208Ssaidi@eecs.umich.edu struct stat hostBuf; 8945208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 8955208Ssaidi@eecs.umich.edu#else 8965074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 8975074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 8985208Ssaidi@eecs.umich.edu#endif 8995074Ssaidi@eecs.umich.edu 9005074Ssaidi@eecs.umich.edu if (result < 0) 9015074Ssaidi@eecs.umich.edu return -errno; 9025074Ssaidi@eecs.umich.edu 9038706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9045074Ssaidi@eecs.umich.edu 9055074Ssaidi@eecs.umich.edu return 0; 9065074Ssaidi@eecs.umich.edu} 9075074Ssaidi@eecs.umich.edu 9085074Ssaidi@eecs.umich.edu 90910027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 91010027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 91110027SChris.Adeniyi-Jones@arm.comSyscallReturn 91210027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 91310027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 91410027SChris.Adeniyi-Jones@arm.com{ 91510027SChris.Adeniyi-Jones@arm.com int index = 0; 91610027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 91710027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 91810793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 91910027SChris.Adeniyi-Jones@arm.com 92010027SChris.Adeniyi-Jones@arm.com std::string path; 92110027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 92210027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 92310027SChris.Adeniyi-Jones@arm.com return -EFAULT; 92410027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 92510027SChris.Adeniyi-Jones@arm.com 92610027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 92710027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 92810027SChris.Adeniyi-Jones@arm.com 92910027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 93010027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 93110027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 93210027SChris.Adeniyi-Jones@arm.com#else 93310027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 93410027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 93510027SChris.Adeniyi-Jones@arm.com#endif 93610027SChris.Adeniyi-Jones@arm.com 93710027SChris.Adeniyi-Jones@arm.com if (result < 0) 93810027SChris.Adeniyi-Jones@arm.com return -errno; 93910027SChris.Adeniyi-Jones@arm.com 94010027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 94110027SChris.Adeniyi-Jones@arm.com 94210027SChris.Adeniyi-Jones@arm.com return 0; 94310027SChris.Adeniyi-Jones@arm.com} 94410027SChris.Adeniyi-Jones@arm.com 94510027SChris.Adeniyi-Jones@arm.com 9461999SN/A/// Target fstat64() handler. 9471999SN/Atemplate <class OS> 9481999SN/ASyscallReturn 9493114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9502680Sktlim@umich.edu ThreadContext *tc) 9511999SN/A{ 9526701Sgblack@eecs.umich.edu int index = 0; 9536701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 9546701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9551999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 9561999SN/A // doesn't map to any simulator fd: not a valid target fd 9571999SN/A return -EBADF; 9581999SN/A } 9591999SN/A 9602764Sstever@eecs.umich.edu#if NO_STAT64 9612064SN/A struct stat hostBuf; 9622064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 9632064SN/A#else 9642064SN/A struct stat64 hostBuf; 9651999SN/A int result = fstat64(process->sim_fd(fd), &hostBuf); 9662064SN/A#endif 9671999SN/A 9681999SN/A if (result < 0) 9692218SN/A return -errno; 9701999SN/A 9718706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 9721999SN/A 9731999SN/A return 0; 9741999SN/A} 9751999SN/A 9761999SN/A 977378SN/A/// Target lstat() handler. 978360SN/Atemplate <class OS> 9791450SN/ASyscallReturn 9803114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9812680Sktlim@umich.edu ThreadContext *tc) 982360SN/A{ 983360SN/A std::string path; 984360SN/A 9856701Sgblack@eecs.umich.edu int index = 0; 9868852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9876701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9886701Sgblack@eecs.umich.edu return -EFAULT; 9896701Sgblack@eecs.umich.edu } 9906701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 991360SN/A 9923669Sbinkertn@umich.edu // Adjust path for current working directory 9933669Sbinkertn@umich.edu path = process->fullPath(path); 9943669Sbinkertn@umich.edu 995360SN/A struct stat hostBuf; 996360SN/A int result = lstat(path.c_str(), &hostBuf); 997360SN/A 998360SN/A if (result < 0) 9991458SN/A return -errno; 1000360SN/A 10018706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1002360SN/A 10031458SN/A return 0; 1004360SN/A} 1005360SN/A 10061999SN/A/// Target lstat64() handler. 10071999SN/Atemplate <class OS> 10081999SN/ASyscallReturn 10093114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10102680Sktlim@umich.edu ThreadContext *tc) 10111999SN/A{ 10121999SN/A std::string path; 10131999SN/A 10146701Sgblack@eecs.umich.edu int index = 0; 10158852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10166701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10176701Sgblack@eecs.umich.edu return -EFAULT; 10186701Sgblack@eecs.umich.edu } 10196701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10201999SN/A 10213669Sbinkertn@umich.edu // Adjust path for current working directory 10223669Sbinkertn@umich.edu path = process->fullPath(path); 10233669Sbinkertn@umich.edu 10242764Sstever@eecs.umich.edu#if NO_STAT64 10252064SN/A struct stat hostBuf; 10262064SN/A int result = lstat(path.c_str(), &hostBuf); 10272064SN/A#else 10281999SN/A struct stat64 hostBuf; 10291999SN/A int result = lstat64(path.c_str(), &hostBuf); 10302064SN/A#endif 10311999SN/A 10321999SN/A if (result < 0) 10331999SN/A return -errno; 10341999SN/A 10358706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10361999SN/A 10371999SN/A return 0; 10381999SN/A} 10391999SN/A 1040378SN/A/// Target fstat() handler. 1041360SN/Atemplate <class OS> 10421450SN/ASyscallReturn 10433114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10442680Sktlim@umich.edu ThreadContext *tc) 1045360SN/A{ 10466701Sgblack@eecs.umich.edu int index = 0; 10476701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 10486701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1049360SN/A 10501969SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 1051360SN/A 1052360SN/A if (fd < 0) 10531458SN/A return -EBADF; 1054360SN/A 1055360SN/A struct stat hostBuf; 1056360SN/A int result = fstat(fd, &hostBuf); 1057360SN/A 1058360SN/A if (result < 0) 10591458SN/A return -errno; 1060360SN/A 10618706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 10622021SN/A 10631458SN/A return 0; 1064360SN/A} 1065360SN/A 1066360SN/A 10671706SN/A/// Target statfs() handler. 10681706SN/Atemplate <class OS> 10691706SN/ASyscallReturn 10703114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10712680Sktlim@umich.edu ThreadContext *tc) 10721706SN/A{ 10731706SN/A std::string path; 10741706SN/A 10756701Sgblack@eecs.umich.edu int index = 0; 10768852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10776701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10786701Sgblack@eecs.umich.edu return -EFAULT; 10796701Sgblack@eecs.umich.edu } 10806701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10811706SN/A 10823669Sbinkertn@umich.edu // Adjust path for current working directory 10833669Sbinkertn@umich.edu path = process->fullPath(path); 10843669Sbinkertn@umich.edu 10851706SN/A struct statfs hostBuf; 10861706SN/A int result = statfs(path.c_str(), &hostBuf); 10871706SN/A 10881706SN/A if (result < 0) 10892218SN/A return -errno; 10901706SN/A 10918706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 10921706SN/A 10931706SN/A return 0; 10941706SN/A} 10951706SN/A 10961706SN/A 10971706SN/A/// Target fstatfs() handler. 10981706SN/Atemplate <class OS> 10991706SN/ASyscallReturn 11003114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11012680Sktlim@umich.edu ThreadContext *tc) 11021706SN/A{ 11036701Sgblack@eecs.umich.edu int index = 0; 11046701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 11056701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11061706SN/A 11071706SN/A if (fd < 0) 11081706SN/A return -EBADF; 11091706SN/A 11101706SN/A struct statfs hostBuf; 11111706SN/A int result = fstatfs(fd, &hostBuf); 11121706SN/A 11131706SN/A if (result < 0) 11142218SN/A return -errno; 11151706SN/A 11168706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11171706SN/A 11181706SN/A return 0; 11191706SN/A} 11201706SN/A 11211706SN/A 11221999SN/A/// Target writev() handler. 11231999SN/Atemplate <class OS> 11241999SN/ASyscallReturn 11253114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11262680Sktlim@umich.edu ThreadContext *tc) 11271999SN/A{ 11286701Sgblack@eecs.umich.edu int index = 0; 11296701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 11301999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 11311999SN/A // doesn't map to any simulator fd: not a valid target fd 11321999SN/A return -EBADF; 11331999SN/A } 11341999SN/A 11358852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 11366701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 11376701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 11381999SN/A struct iovec hiov[count]; 11396227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 11401999SN/A typename OS::tgt_iovec tiov; 11412461SN/A 11428852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 11438852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 11448737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 11451999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 11468852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 11478852Sandreas.hansson@arm.com hiov[i].iov_len); 11481999SN/A } 11491999SN/A 11501999SN/A int result = writev(process->sim_fd(fd), hiov, count); 11511999SN/A 11526227Snate@binkert.org for (size_t i = 0; i < count; ++i) 11531999SN/A delete [] (char *)hiov[i].iov_base; 11541999SN/A 11551999SN/A if (result < 0) 11562218SN/A return -errno; 11571999SN/A 115810629Sjthestness@gmail.com return result; 11591999SN/A} 11601999SN/A 11611999SN/A 1162378SN/A/// Target mmap() handler. 1163378SN/A/// 1164378SN/A/// We don't really handle mmap(). If the target is mmaping an 1165378SN/A/// anonymous region or /dev/zero, we can get away with doing basically 1166378SN/A/// nothing (since memory is initialized to zero and the simulator 11678324Ssteve.reinhardt@amd.com/// doesn't really check addresses anyway). 11688324Ssteve.reinhardt@amd.com/// 1169360SN/Atemplate <class OS> 11701450SN/ASyscallReturn 11713114Sgblack@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1172360SN/A{ 11736701Sgblack@eecs.umich.edu int index = 0; 11746701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 11756701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 11766701Sgblack@eecs.umich.edu index++; // int prot = p->getSyscallArg(tc, index); 11776701Sgblack@eecs.umich.edu int flags = p->getSyscallArg(tc, index); 11788324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 117910486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1180360SN/A 11819008Sgblack@eecs.umich.edu if (length > 0x100000000ULL) 11829008Sgblack@eecs.umich.edu warn("mmap length argument %#x is unreasonably large.\n", length); 11839008Sgblack@eecs.umich.edu 11848324Ssteve.reinhardt@amd.com if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 11858324Ssteve.reinhardt@amd.com Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd); 11868324Ssteve.reinhardt@amd.com if (!fd_map || fd_map->fd < 0) { 11878324Ssteve.reinhardt@amd.com warn("mmap failing: target fd %d is not valid\n", tgt_fd); 11888324Ssteve.reinhardt@amd.com return -EBADF; 11898324Ssteve.reinhardt@amd.com } 11908324Ssteve.reinhardt@amd.com 11918324Ssteve.reinhardt@amd.com if (fd_map->filename != "/dev/zero") { 11928324Ssteve.reinhardt@amd.com // This is very likely broken, but leave a warning here 11938324Ssteve.reinhardt@amd.com // (rather than panic) in case /dev/zero is known by 11948324Ssteve.reinhardt@amd.com // another name on some platform 11958324Ssteve.reinhardt@amd.com warn("allowing mmap of file %s; mmap not supported on files" 11968324Ssteve.reinhardt@amd.com " other than /dev/zero\n", fd_map->filename); 11978324Ssteve.reinhardt@amd.com } 11988324Ssteve.reinhardt@amd.com } 11995877Shsul@eecs.umich.edu 120010486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 120110486Stjablin@gmail.com 120210318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes) != 0 || 120310486Stjablin@gmail.com (offset % TheISA::PageBytes) != 0) { 12042544SN/A warn("mmap failing: arguments not page-aligned: " 120510486Stjablin@gmail.com "start 0x%x offset 0x%x", 120610486Stjablin@gmail.com start, offset); 12072544SN/A return -EINVAL; 1208360SN/A } 1209360SN/A 12108600Ssteve.reinhardt@amd.com // are we ok with clobbering existing mappings? only set this to 12118600Ssteve.reinhardt@amd.com // true if the user has been warned. 12128600Ssteve.reinhardt@amd.com bool clobber = false; 12138600Ssteve.reinhardt@amd.com 12148600Ssteve.reinhardt@amd.com // try to use the caller-provided address if there is one 12158600Ssteve.reinhardt@amd.com bool use_provided_address = (start != 0); 12168600Ssteve.reinhardt@amd.com 12178600Ssteve.reinhardt@amd.com if (use_provided_address) { 12188600Ssteve.reinhardt@amd.com // check to see if the desired address is already in use 12198600Ssteve.reinhardt@amd.com if (!p->pTable->isUnmapped(start, length)) { 12208600Ssteve.reinhardt@amd.com // there are existing mappings in the desired range 12218600Ssteve.reinhardt@amd.com // whether we clobber them or not depends on whether the caller 12228600Ssteve.reinhardt@amd.com // specified MAP_FIXED 12238600Ssteve.reinhardt@amd.com if (flags & OS::TGT_MAP_FIXED) { 122410485SMichael.Adler@intel.com // MAP_FIXED specified: map attempt fails 122510485SMichael.Adler@intel.com return -EINVAL; 12268600Ssteve.reinhardt@amd.com } else { 12278600Ssteve.reinhardt@amd.com // MAP_FIXED not specified: ignore suggested start address 12288600Ssteve.reinhardt@amd.com warn("mmap: ignoring suggested map address 0x%x\n", start); 12298600Ssteve.reinhardt@amd.com use_provided_address = false; 12308600Ssteve.reinhardt@amd.com } 12318600Ssteve.reinhardt@amd.com } 12322544SN/A } 12332544SN/A 12348600Ssteve.reinhardt@amd.com if (!use_provided_address) { 12358600Ssteve.reinhardt@amd.com // no address provided, or provided address unusable: 12368600Ssteve.reinhardt@amd.com // pick next address from our "mmap region" 12378600Ssteve.reinhardt@amd.com if (OS::mmapGrowsDown()) { 12388600Ssteve.reinhardt@amd.com start = p->mmap_end - length; 12398600Ssteve.reinhardt@amd.com p->mmap_end = start; 12408600Ssteve.reinhardt@amd.com } else { 12418600Ssteve.reinhardt@amd.com start = p->mmap_end; 12428600Ssteve.reinhardt@amd.com p->mmap_end += length; 12438600Ssteve.reinhardt@amd.com } 12446672Sgblack@eecs.umich.edu } 12458600Ssteve.reinhardt@amd.com 12468601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 12472544SN/A 12481458SN/A return start; 1249360SN/A} 1250360SN/A 1251378SN/A/// Target getrlimit() handler. 1252360SN/Atemplate <class OS> 12531450SN/ASyscallReturn 12543114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12552680Sktlim@umich.edu ThreadContext *tc) 1256360SN/A{ 12576701Sgblack@eecs.umich.edu int index = 0; 12586701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 12596701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1260360SN/A 1261360SN/A switch (resource) { 12622064SN/A case OS::TGT_RLIMIT_STACK: 12635877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 12642064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 12658737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 12668737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 12672064SN/A break; 1268360SN/A 12695877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 12705877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 12715877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 12728737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 12738737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 12745877Shsul@eecs.umich.edu break; 12755877Shsul@eecs.umich.edu 12762064SN/A default: 127710794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 127810794Sbrandon.potter@amd.com return -EINVAL; 12792064SN/A break; 1280360SN/A } 1281360SN/A 12828706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 12831458SN/A return 0; 1284360SN/A} 1285360SN/A 1286378SN/A/// Target gettimeofday() handler. 1287360SN/Atemplate <class OS> 12881450SN/ASyscallReturn 12893114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12902680Sktlim@umich.edu ThreadContext *tc) 1291360SN/A{ 12926701Sgblack@eecs.umich.edu int index = 0; 12936701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1294360SN/A 1295360SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1296360SN/A tp->tv_sec += seconds_since_epoch; 12976109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 12986109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1299360SN/A 13008706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1301360SN/A 13021458SN/A return 0; 1303360SN/A} 1304360SN/A 1305360SN/A 13061999SN/A/// Target utimes() handler. 13071999SN/Atemplate <class OS> 13081999SN/ASyscallReturn 13093114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13102680Sktlim@umich.edu ThreadContext *tc) 13111999SN/A{ 13121999SN/A std::string path; 13131999SN/A 13146701Sgblack@eecs.umich.edu int index = 0; 13158852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 13166701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 13176701Sgblack@eecs.umich.edu return -EFAULT; 13186701Sgblack@eecs.umich.edu } 13191999SN/A 13206701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 13216701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 13228706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 13231999SN/A 13241999SN/A struct timeval hostTimeval[2]; 13251999SN/A for (int i = 0; i < 2; ++i) 13261999SN/A { 13278737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 13288737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 13291999SN/A } 13303669Sbinkertn@umich.edu 13313669Sbinkertn@umich.edu // Adjust path for current working directory 13323669Sbinkertn@umich.edu path = process->fullPath(path); 13333669Sbinkertn@umich.edu 13341999SN/A int result = utimes(path.c_str(), hostTimeval); 13351999SN/A 13361999SN/A if (result < 0) 13371999SN/A return -errno; 13381999SN/A 13391999SN/A return 0; 13401999SN/A} 1341378SN/A/// Target getrusage() function. 1342360SN/Atemplate <class OS> 13431450SN/ASyscallReturn 13443114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13452680Sktlim@umich.edu ThreadContext *tc) 1346360SN/A{ 13476701Sgblack@eecs.umich.edu int index = 0; 13486701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 13496701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1350360SN/A 13513670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 13523670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1353360SN/A rup->ru_stime.tv_sec = 0; 1354360SN/A rup->ru_stime.tv_usec = 0; 1355360SN/A rup->ru_maxrss = 0; 1356360SN/A rup->ru_ixrss = 0; 1357360SN/A rup->ru_idrss = 0; 1358360SN/A rup->ru_isrss = 0; 1359360SN/A rup->ru_minflt = 0; 1360360SN/A rup->ru_majflt = 0; 1361360SN/A rup->ru_nswap = 0; 1362360SN/A rup->ru_inblock = 0; 1363360SN/A rup->ru_oublock = 0; 1364360SN/A rup->ru_msgsnd = 0; 1365360SN/A rup->ru_msgrcv = 0; 1366360SN/A rup->ru_nsignals = 0; 1367360SN/A rup->ru_nvcsw = 0; 1368360SN/A rup->ru_nivcsw = 0; 1369360SN/A 13703670Sbinkertn@umich.edu switch (who) { 13713670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 13723670Sbinkertn@umich.edu getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 13738737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 13748737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 13753670Sbinkertn@umich.edu break; 13763670Sbinkertn@umich.edu 13773670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 13783670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 13793670Sbinkertn@umich.edu break; 13803670Sbinkertn@umich.edu 13813670Sbinkertn@umich.edu default: 13823670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 13833670Sbinkertn@umich.edu // plow ahead 13843670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 13853670Sbinkertn@umich.edu who); 13863670Sbinkertn@umich.edu } 13873670Sbinkertn@umich.edu 13888706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1389360SN/A 13901458SN/A return 0; 1391360SN/A} 1392360SN/A 13936683Stjones1@inf.ed.ac.uk/// Target times() function. 13946683Stjones1@inf.ed.ac.uktemplate <class OS> 13956683Stjones1@inf.ed.ac.ukSyscallReturn 13966683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13976683Stjones1@inf.ed.ac.uk ThreadContext *tc) 13986683Stjones1@inf.ed.ac.uk{ 13996701Sgblack@eecs.umich.edu int index = 0; 14006701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 14016683Stjones1@inf.ed.ac.uk 14026683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 14037823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 14046683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 14056683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 14066683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 14076683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 14086683Stjones1@inf.ed.ac.uk 14096683Stjones1@inf.ed.ac.uk // Convert to host endianness 14108737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 14116683Stjones1@inf.ed.ac.uk 14126683Stjones1@inf.ed.ac.uk // Write back 14138706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 14146683Stjones1@inf.ed.ac.uk 14156683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 14166683Stjones1@inf.ed.ac.uk return clocks; 14176683Stjones1@inf.ed.ac.uk} 14182553SN/A 14196684Stjones1@inf.ed.ac.uk/// Target time() function. 14206684Stjones1@inf.ed.ac.uktemplate <class OS> 14216684Stjones1@inf.ed.ac.ukSyscallReturn 14226684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14236684Stjones1@inf.ed.ac.uk ThreadContext *tc) 14246684Stjones1@inf.ed.ac.uk{ 14256684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 14266684Stjones1@inf.ed.ac.uk getElapsedTime(sec, usec); 14276684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 14286684Stjones1@inf.ed.ac.uk 14296701Sgblack@eecs.umich.edu int index = 0; 14306701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 14316684Stjones1@inf.ed.ac.uk if(taddr != 0) { 14326684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 14338737Skoansin.tan@gmail.com t = TheISA::htog(t); 14348852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 14358852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 14366684Stjones1@inf.ed.ac.uk } 14376684Stjones1@inf.ed.ac.uk return sec; 14386684Stjones1@inf.ed.ac.uk} 14392553SN/A 14402553SN/A 14411354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1442