syscall_emul.hh revision 11760
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 482764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 499202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 509202Spalle@lyckegaard.dk defined(__NetBSD__)) 512064SN/A 52360SN/A/// 53360SN/A/// @file syscall_emul.hh 54360SN/A/// 55360SN/A/// This file defines objects used to emulate syscalls from the target 56360SN/A/// application on the host machine. 57360SN/A 581809SN/A#ifdef __CYGWIN32__ 595543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 6011392Sbrandon.potter@amd.com 611809SN/A#endif 6211392Sbrandon.potter@amd.com#include <fcntl.h> 6311383Sbrandon.potter@amd.com#include <sys/mman.h> 643113Sgblack@eecs.umich.edu#include <sys/stat.h> 6511759Sbrandon.potter@amd.com#include <sys/statfs.h> 668229Snate@binkert.org#include <sys/time.h> 678229Snate@binkert.org#include <sys/uio.h> 6811594Santhony.gutierrez@amd.com#include <unistd.h> 697075Snate@binkert.org 708229Snate@binkert.org#include <cerrno> 717075Snate@binkert.org#include <string> 72360SN/A 732474SN/A#include "base/chunk_generator.hh" 745543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 7511392Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 762462SN/A#include "base/misc.hh" 771354SN/A#include "base/trace.hh" 786216Snate@binkert.org#include "base/types.hh" 796658Snate@binkert.org#include "config/the_isa.hh" 802474SN/A#include "cpu/base.hh" 812680Sktlim@umich.edu#include "cpu/thread_context.hh" 8211380Salexandru.dutu@amd.com#include "debug/SyscallBase.hh" 838232Snate@binkert.org#include "debug/SyscallVerbose.hh" 848229Snate@binkert.org#include "mem/page_table.hh" 857678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 8610496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 878229Snate@binkert.org#include "sim/process.hh" 8810497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 898766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 906640Svince@csl.cornell.edu#include "sim/system.hh" 91360SN/A 9211380Salexandru.dutu@amd.com// This wrapper macro helps out with readability a bit. FLAGEXT specifies 9311380Salexandru.dutu@amd.com// the verbosity and FMT is the message to be appended to the syscall 9411380Salexandru.dutu@amd.com// header information. The syscall header information contains the cpuid 9511380Salexandru.dutu@amd.com// and thread id. 9611380Salexandru.dutu@amd.com#define DPRINTF_SYSCALL(FLAGEXT, FMT, ...) \ 9711380Salexandru.dutu@amd.com DPRINTFS(Syscall##FLAGEXT, tc->getCpuPtr(), "T%d : syscall " FMT, \ 9811380Salexandru.dutu@amd.com tc->threadId(), __VA_ARGS__) 9911380Salexandru.dutu@amd.com 100360SN/A/// 101360SN/A/// System call descriptor. 102360SN/A/// 103360SN/Aclass SyscallDesc { 104360SN/A 105360SN/A public: 106360SN/A 107378SN/A /// Typedef for target syscall handler functions. 1081450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 1093114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 110360SN/A 1115543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 1125543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 1135543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 11410831Ssteve.reinhardt@amd.com bool warned; //!< Have we warned about unimplemented syscall? 115360SN/A 116360SN/A /// Flag values for controlling syscall behavior. 117360SN/A enum Flags { 118360SN/A /// Don't set return regs according to funcPtr return value. 119360SN/A /// Used for syscalls with non-standard return conventions 1202680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 121360SN/A /// sigreturn). 12210831Ssteve.reinhardt@amd.com SuppressReturnValue = 1, 12310831Ssteve.reinhardt@amd.com WarnOnce = 2 124360SN/A }; 125360SN/A 126360SN/A /// Constructor. 127360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 12810831Ssteve.reinhardt@amd.com : name(_name), funcPtr(_funcPtr), flags(_flags), warned(false) 129360SN/A { 130360SN/A } 131360SN/A 132360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1333114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 13410831Ssteve.reinhardt@amd.com 13510831Ssteve.reinhardt@amd.com /// Is the WarnOnce flag set? 13610831Ssteve.reinhardt@amd.com bool warnOnce() const { return (flags & WarnOnce); } 137360SN/A}; 138360SN/A 139360SN/A 140360SN/A////////////////////////////////////////////////////////////////////// 141360SN/A// 142360SN/A// The following emulation functions are generic enough that they 143360SN/A// don't need to be recompiled for different emulated OS's. They are 144360SN/A// defined in sim/syscall_emul.cc. 145360SN/A// 146360SN/A////////////////////////////////////////////////////////////////////// 147360SN/A 148360SN/A 149378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1501706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1513114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 152378SN/A 153378SN/A/// Handler for unimplemented syscalls that we never intend to 154378SN/A/// implement (signal handling, etc.) and should not affect the correct 155378SN/A/// behavior of the program. Print a warning only if the appropriate 156378SN/A/// trace flag is enabled. Return success to the target program. 1571706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1583114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 159360SN/A 16011760Sbrandon.potter@amd.com// Target fallocateFunc() handler. 16111760Sbrandon.potter@amd.comSyscallReturn fallocateFunc(SyscallDesc *desc, int num, 16211760Sbrandon.potter@amd.com LiveProcess *p, ThreadContext *tc); 16311760Sbrandon.potter@amd.com 1646109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1651706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1663114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 167378SN/A 1686109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1696109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1706109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1716109Ssanchezd@stanford.edu 172378SN/A/// Target getpagesize() handler. 1731706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1743114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 175378SN/A 1765748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1775748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1785748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 179378SN/A 180378SN/A/// Target close() handler. 1811706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1823114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 183378SN/A 184378SN/A/// Target read() handler. 1851706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1863114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 187378SN/A 188378SN/A/// Target write() handler. 1891706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 191378SN/A 192378SN/A/// Target lseek() handler. 1931706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1943114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 195378SN/A 1964118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1974118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1984118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1994118Sgblack@eecs.umich.edu 200378SN/A/// Target munmap() handler. 2011706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2023114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 203378SN/A 204378SN/A/// Target gethostname() handler. 2051706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2063114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 207360SN/A 2085513SMichael.Adler@intel.com/// Target getcwd() handler. 2095513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2105513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2115513SMichael.Adler@intel.com 21210203SAli.Saidi@ARM.com/// Target readlink() handler. 21310203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 21410203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 21510203SAli.Saidi@ARM.com int index = 0); 2165513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2175513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2185513SMichael.Adler@intel.com 219511SN/A/// Target unlink() handler. 22010633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 22110633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc, 22210633Smichaelupton@gmail.com int index); 2231706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 225511SN/A 2265513SMichael.Adler@intel.com/// Target mkdir() handler. 2275513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2285513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2295513SMichael.Adler@intel.com 230511SN/A/// Target rename() handler. 2311706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2323114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2331706SN/A 2341706SN/A 2351706SN/A/// Target truncate() handler. 2361706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2373114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2381706SN/A 2391706SN/A 2401706SN/A/// Target ftruncate() handler. 2411706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2423114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2431706SN/A 244511SN/A 2456703Svince@csl.cornell.edu/// Target truncate64() handler. 2466703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2476703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2486703Svince@csl.cornell.edu 2496685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2506685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2516685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2526685Stjones1@inf.ed.ac.uk 2536685Stjones1@inf.ed.ac.uk 2545513SMichael.Adler@intel.com/// Target umask() handler. 2555513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2565513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2575513SMichael.Adler@intel.com 2585513SMichael.Adler@intel.com 2591999SN/A/// Target chown() handler. 2601999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2613114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2621999SN/A 2631999SN/A 2641999SN/A/// Target fchown() handler. 2651999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2663114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2671999SN/A 2683079Sstever@eecs.umich.edu/// Target dup() handler. 2693079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2703114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2713079Sstever@eecs.umich.edu 2722093SN/A/// Target fnctl() handler. 2732093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2743114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2752093SN/A 2762687Sksewell@umich.edu/// Target fcntl64() handler. 2772687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2783114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2792687Sksewell@umich.edu 2802238SN/A/// Target setuid() handler. 2812238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2823114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2832238SN/A 2842238SN/A/// Target getpid() handler. 2852238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2863114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2872238SN/A 2882238SN/A/// Target getuid() handler. 2892238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2912238SN/A 2922238SN/A/// Target getgid() handler. 2932238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2943114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2952238SN/A 2962238SN/A/// Target getppid() handler. 2972238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2983114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2992238SN/A 3002238SN/A/// Target geteuid() handler. 3012238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3023114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3032238SN/A 3042238SN/A/// Target getegid() handler. 3052238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3063114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3072238SN/A 3086109Ssanchezd@stanford.edu/// Target clone() handler. 3096109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3106109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3112238SN/A 3129455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3139455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3149455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 31510203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 31610203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 31710203SAli.Saidi@ARM.com int index); 3189455Smitch.hayenga+gem5@gmail.com 3199112Smarc.orr@gmail.com/// Futex system call 3209112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3219112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3229112Smarc.orr@gmail.comtemplate <class OS> 3239112Smarc.orr@gmail.comSyscallReturn 3249112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3259112Smarc.orr@gmail.com ThreadContext *tc) 3269112Smarc.orr@gmail.com{ 3279112Smarc.orr@gmail.com int index_uaddr = 0; 3289112Smarc.orr@gmail.com int index_op = 1; 3299112Smarc.orr@gmail.com int index_val = 2; 3309112Smarc.orr@gmail.com int index_timeout = 3; 3319112Smarc.orr@gmail.com 3329112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3339112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3349112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3359112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3369112Smarc.orr@gmail.com 3379112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3389112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3399112Smarc.orr@gmail.com 3409112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3419112Smarc.orr@gmail.com uaddr, op, val); 3429112Smarc.orr@gmail.com 3439238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3449112Smarc.orr@gmail.com 3459112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3469112Smarc.orr@gmail.com if (timeout != 0) { 3479112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3489112Smarc.orr@gmail.com "we'll wait indefinitely"); 3499112Smarc.orr@gmail.com } 3509112Smarc.orr@gmail.com 3519112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3529112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3539112Smarc.orr@gmail.com int mem_val = *((int *)buf); 35411367Sandreas.hansson@arm.com delete[] buf; 3559112Smarc.orr@gmail.com 35611321Ssteve.reinhardt@amd.com if (val != mem_val) { 3579112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3589112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3599112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3609112Smarc.orr@gmail.com } 3619112Smarc.orr@gmail.com 3629112Smarc.orr@gmail.com // Queue the thread context 3639112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3649112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3659112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3669112Smarc.orr@gmail.com } else { 3679112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3689112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3699112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3709112Smarc.orr@gmail.com } 3719112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3729112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3739112Smarc.orr@gmail.com "thread context\n"); 3749112Smarc.orr@gmail.com tc->suspend(); 3759112Smarc.orr@gmail.com return 0; 3769112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3779112Smarc.orr@gmail.com int wokenUp = 0; 3789112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3799112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3809112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3819112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3829112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3839112Smarc.orr@gmail.com tcWaitList->pop_front(); 3849112Smarc.orr@gmail.com wokenUp++; 3859112Smarc.orr@gmail.com } 38611321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3879112Smarc.orr@gmail.com futex_map.erase(uaddr); 3889112Smarc.orr@gmail.com delete tcWaitList; 3899112Smarc.orr@gmail.com } 3909112Smarc.orr@gmail.com } 3919112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3929112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3939112Smarc.orr@gmail.com return wokenUp; 3949112Smarc.orr@gmail.com } else { 3959238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3969112Smarc.orr@gmail.com return 0; 3979112Smarc.orr@gmail.com } 3989112Smarc.orr@gmail.com 3999112Smarc.orr@gmail.com} 4009112Smarc.orr@gmail.com 4012238SN/A 4022238SN/A/// Pseudo Funcs - These functions use a different return convension, 4032238SN/A/// returning a second value in a register other than the normal return register 4042238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 4053114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4062238SN/A 4072238SN/A/// Target getpidPseudo() handler. 4082238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4093114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4102238SN/A 4112238SN/A/// Target getuidPseudo() handler. 4122238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 4133114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4142238SN/A 4152238SN/A/// Target getgidPseudo() handler. 4162238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4173114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4182238SN/A 4192238SN/A 4201354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4211354SN/Aconst int one_million = 1000000; 42210796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 42310796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 4241354SN/A 4251354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4261354SN/A/// by my reckoning. We want to keep this a constant (not use the 4271354SN/A/// real-world time) to keep simulations repeatable. 4281354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4291354SN/A 4301354SN/A/// Helper function to convert current elapsed time to seconds and 4311354SN/A/// microseconds. 4321354SN/Atemplate <class T1, class T2> 4331354SN/Avoid 43410796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 4351354SN/A{ 43610796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 4371354SN/A sec = elapsed_usecs / one_million; 4381354SN/A usec = elapsed_usecs % one_million; 4391354SN/A} 4401354SN/A 44110796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 44210796Sbrandon.potter@amd.com/// nanoseconds. 44310796Sbrandon.potter@amd.comtemplate <class T1, class T2> 44410796Sbrandon.potter@amd.comvoid 44510796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 44610796Sbrandon.potter@amd.com{ 44710796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 44810796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 44910796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 45010796Sbrandon.potter@amd.com} 45110796Sbrandon.potter@amd.com 452360SN/A////////////////////////////////////////////////////////////////////// 453360SN/A// 454360SN/A// The following emulation functions are generic, but need to be 455360SN/A// templated to account for differences in types, constants, etc. 456360SN/A// 457360SN/A////////////////////////////////////////////////////////////////////// 458360SN/A 45911759Sbrandon.potter@amd.com typedef struct statfs hst_statfs; 4603113Sgblack@eecs.umich.edu#if NO_STAT64 4613113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4623113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4633113Sgblack@eecs.umich.edu#else 4643113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4653113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4663113Sgblack@eecs.umich.edu#endif 4673113Sgblack@eecs.umich.edu 4683113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4693113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4703113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4713113Sgblack@eecs.umich.edu 4723113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4733113Sgblack@eecs.umich.edustatic void 4743113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4753113Sgblack@eecs.umich.edu{ 4764189Sgblack@eecs.umich.edu using namespace TheISA; 4774189Sgblack@eecs.umich.edu 4783113Sgblack@eecs.umich.edu if (fakeTTY) 4793113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4803113Sgblack@eecs.umich.edu else 4813113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4828737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4833113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4848737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4853277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4865515SMichael.Adler@intel.com if (fakeTTY) { 4875515SMichael.Adler@intel.com // Claim to be a character device 4885515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4895515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4905515SMichael.Adler@intel.com } 4918737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4923277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4938737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4943277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4958737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4963277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4978737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4983113Sgblack@eecs.umich.edu if (fakeTTY) 4993113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 5003113Sgblack@eecs.umich.edu else 5013113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 5028737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 5033113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 5048737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 5053114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5068737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5073114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5088737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5093114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5108737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5114061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5124061Sgblack@eecs.umich.edu // consistently across different hosts. 5134061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5148737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5153113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5168737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5173113Sgblack@eecs.umich.edu} 5183113Sgblack@eecs.umich.edu 5193113Sgblack@eecs.umich.edu// Same for stat64 5203113Sgblack@eecs.umich.edu 5213113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5223113Sgblack@eecs.umich.edustatic void 5233113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5243113Sgblack@eecs.umich.edu{ 5254189Sgblack@eecs.umich.edu using namespace TheISA; 5264189Sgblack@eecs.umich.edu 5273113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5283113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5293113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5308737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5313113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5328737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5333113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5348737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5353113Sgblack@eecs.umich.edu#else 5363113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5373113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5383113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5393113Sgblack@eecs.umich.edu#endif 5403113Sgblack@eecs.umich.edu} 5413113Sgblack@eecs.umich.edu 5423113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5433113Sgblack@eecs.umich.edutemplate<class OS> 5443113Sgblack@eecs.umich.edustatic void 5458852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5463113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5473113Sgblack@eecs.umich.edu{ 5483113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5493113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5503113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5513113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5523113Sgblack@eecs.umich.edu} 5533113Sgblack@eecs.umich.edu 5543113Sgblack@eecs.umich.edutemplate<class OS> 5553113Sgblack@eecs.umich.edustatic void 5568852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5573113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5583113Sgblack@eecs.umich.edu{ 5593113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5603113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5616686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5623113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5633113Sgblack@eecs.umich.edu} 5643113Sgblack@eecs.umich.edu 56511759Sbrandon.potter@amd.comtemplate <class OS> 56611759Sbrandon.potter@amd.comstatic void 56711759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 56811759Sbrandon.potter@amd.com hst_statfs *host) 56911759Sbrandon.potter@amd.com{ 57011759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 57111759Sbrandon.potter@amd.com 57211759Sbrandon.potter@amd.com#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__) 57311759Sbrandon.potter@amd.com tgt->f_type = 0; 57411759Sbrandon.potter@amd.com#else 57511759Sbrandon.potter@amd.com tgt->f_type = TheISA::htog(host->f_type); 57611759Sbrandon.potter@amd.com#endif 57711759Sbrandon.potter@amd.com tgt->f_bsize = TheISA::htog(host->f_bsize); 57811759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 57911759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 58011759Sbrandon.potter@amd.com tgt->f_bavail = TheISA::htog(host->f_bavail); 58111759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 58211759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 58311759Sbrandon.potter@amd.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 58411759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 58511759Sbrandon.potter@amd.com tgt->f_frsize = TheISA::htog(host->f_frsize); 58611759Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 58711759Sbrandon.potter@amd.com 58811759Sbrandon.potter@amd.com tgt.copyOut(mem); 58911759Sbrandon.potter@amd.com} 59011759Sbrandon.potter@amd.com 591378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 592378SN/A/// only to find out if their stdout is a tty, to determine whether to 5939141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5949141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 595360SN/Atemplate <class OS> 5961450SN/ASyscallReturn 5973114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5982680Sktlim@umich.edu ThreadContext *tc) 599360SN/A{ 6006701Sgblack@eecs.umich.edu int index = 0; 60110930Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 6026701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 603360SN/A 60410930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 605360SN/A 60610932Sbrandon.potter@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 60710496Ssteve.reinhardt@amd.com 60810930Sbrandon.potter@amd.com if (fde == NULL) { 609360SN/A // doesn't map to any simulator fd: not a valid target fd 6101458SN/A return -EBADF; 611360SN/A } 612360SN/A 61310930Sbrandon.potter@amd.com if (fde->driver != NULL) { 61410930Sbrandon.potter@amd.com return fde->driver->ioctl(process, tc, req); 61510496Ssteve.reinhardt@amd.com } 61610496Ssteve.reinhardt@amd.com 6179141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 6181458SN/A return -ENOTTY; 6199141Smarc.orr@gmail.com } 620360SN/A 6219141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 62210930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 6239141Smarc.orr@gmail.com return -ENOTTY; 624360SN/A} 625360SN/A 626360SN/Atemplate <class OS> 62710027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 6283114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 62910027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 630360SN/A{ 631360SN/A std::string path; 632360SN/A 6338852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 6346701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6351458SN/A return -EFAULT; 636360SN/A 6376701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6386701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 639360SN/A int hostFlags = 0; 640360SN/A 641360SN/A // translate open flags 642360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 643360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 644360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 645360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 646360SN/A } 647360SN/A } 648360SN/A 649360SN/A // any target flags left? 650360SN/A if (tgtFlags != 0) 6511706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 652360SN/A 653360SN/A#ifdef __CYGWIN32__ 654360SN/A hostFlags |= O_BINARY; 655360SN/A#endif 656360SN/A 6573669Sbinkertn@umich.edu // Adjust path for current working directory 6583669Sbinkertn@umich.edu path = process->fullPath(path); 6593669Sbinkertn@umich.edu 6601706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6611706SN/A 66210496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 66310496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 66410496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 66510496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 66610496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 66710496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 66810496Ssteve.reinhardt@amd.com return -ENOENT; 66910496Ssteve.reinhardt@amd.com } 67010496Ssteve.reinhardt@amd.com 67110496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 67210496Ssteve.reinhardt@amd.com if (drv != NULL) { 67310496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 67410496Ssteve.reinhardt@amd.com // process if necessary. 67510496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 67610496Ssteve.reinhardt@amd.com } 67710496Ssteve.reinhardt@amd.com 67810496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 67910496Ssteve.reinhardt@amd.com // /dev/zero 68010496Ssteve.reinhardt@amd.com } 68110496Ssteve.reinhardt@amd.com 6825795Ssaidi@eecs.umich.edu int fd; 6839143Ssteve.reinhardt@amd.com int local_errno; 6849142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6859142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6869143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6875795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6889143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6895795Ssaidi@eecs.umich.edu } else { 6905795Ssaidi@eecs.umich.edu // open the file 6915795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6929143Ssteve.reinhardt@amd.com local_errno = errno; 6935795Ssaidi@eecs.umich.edu } 694360SN/A 6959143Ssteve.reinhardt@amd.com if (fd == -1) 6969143Ssteve.reinhardt@amd.com return -local_errno; 6979143Ssteve.reinhardt@amd.com 69810932Sbrandon.potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 699360SN/A} 700360SN/A 70110027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 70210027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 70310027SChris.Adeniyi-Jones@arm.comSyscallReturn 70410027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70510027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 70610027SChris.Adeniyi-Jones@arm.com{ 70710027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 70810027SChris.Adeniyi-Jones@arm.com} 70910027SChris.Adeniyi-Jones@arm.com 71010027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 71110027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 71210027SChris.Adeniyi-Jones@arm.comSyscallReturn 71310027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 71410027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 71510027SChris.Adeniyi-Jones@arm.com{ 71610027SChris.Adeniyi-Jones@arm.com int index = 0; 71710027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 71810027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 71910027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 72010027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 72110027SChris.Adeniyi-Jones@arm.com} 72210027SChris.Adeniyi-Jones@arm.com 72310633Smichaelupton@gmail.com/// Target unlinkat() handler. 72410633Smichaelupton@gmail.comtemplate <class OS> 72510633Smichaelupton@gmail.comSyscallReturn 72610633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 72710633Smichaelupton@gmail.com ThreadContext *tc) 72810633Smichaelupton@gmail.com{ 72910633Smichaelupton@gmail.com int index = 0; 73010633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 73110633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 73210633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 73310633Smichaelupton@gmail.com 73410633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 73510633Smichaelupton@gmail.com} 73610633Smichaelupton@gmail.com 73710203SAli.Saidi@ARM.com/// Target facessat() handler 73810203SAli.Saidi@ARM.comtemplate <class OS> 73910203SAli.Saidi@ARM.comSyscallReturn 74010203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 74110203SAli.Saidi@ARM.com ThreadContext *tc) 74210203SAli.Saidi@ARM.com{ 74310203SAli.Saidi@ARM.com int index = 0; 74410203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 74510203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 74610203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 74710203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 74810203SAli.Saidi@ARM.com} 74910203SAli.Saidi@ARM.com 75010203SAli.Saidi@ARM.com/// Target readlinkat() handler 75110203SAli.Saidi@ARM.comtemplate <class OS> 75210203SAli.Saidi@ARM.comSyscallReturn 75310203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 75410203SAli.Saidi@ARM.com ThreadContext *tc) 75510203SAli.Saidi@ARM.com{ 75610203SAli.Saidi@ARM.com int index = 0; 75710203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 75810203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 75910203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 76010203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 76110203SAli.Saidi@ARM.com} 76210203SAli.Saidi@ARM.com 76310850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 76410850SGiacomo.Gabrielli@arm.comtemplate <class OS> 76510850SGiacomo.Gabrielli@arm.comSyscallReturn 76610850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 76710850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 76810850SGiacomo.Gabrielli@arm.com{ 76910850SGiacomo.Gabrielli@arm.com int index = 0; 77010850SGiacomo.Gabrielli@arm.com 77110850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 77210850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 77310850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 77410850SGiacomo.Gabrielli@arm.com 77510850SGiacomo.Gabrielli@arm.com std::string old_name; 77610850SGiacomo.Gabrielli@arm.com 77710850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 77810850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 77910850SGiacomo.Gabrielli@arm.com return -EFAULT; 78010850SGiacomo.Gabrielli@arm.com 78110850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 78210850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 78310850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 78410850SGiacomo.Gabrielli@arm.com 78510850SGiacomo.Gabrielli@arm.com std::string new_name; 78610850SGiacomo.Gabrielli@arm.com 78710850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 78810850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 78910850SGiacomo.Gabrielli@arm.com return -EFAULT; 79010850SGiacomo.Gabrielli@arm.com 79110850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 79210850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 79310850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 79410850SGiacomo.Gabrielli@arm.com 79510850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 79610850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 79710850SGiacomo.Gabrielli@arm.com} 79810850SGiacomo.Gabrielli@arm.com 7996640Svince@csl.cornell.edu/// Target sysinfo() handler. 8006640Svince@csl.cornell.edutemplate <class OS> 8016640Svince@csl.cornell.eduSyscallReturn 8026640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8036640Svince@csl.cornell.edu ThreadContext *tc) 8046640Svince@csl.cornell.edu{ 8056640Svince@csl.cornell.edu 8066701Sgblack@eecs.umich.edu int index = 0; 8076701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 80810793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 8096640Svince@csl.cornell.edu 81011758Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 81111758Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 81211758Sbrandon.potter@amd.com sysinfo->mem_unit = 1; 8136640Svince@csl.cornell.edu 8148706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 8156640Svince@csl.cornell.edu 8166701Sgblack@eecs.umich.edu return 0; 8176640Svince@csl.cornell.edu} 818360SN/A 8191999SN/A/// Target chmod() handler. 8201999SN/Atemplate <class OS> 8211999SN/ASyscallReturn 8223114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8232680Sktlim@umich.edu ThreadContext *tc) 8241999SN/A{ 8251999SN/A std::string path; 8261999SN/A 8276701Sgblack@eecs.umich.edu int index = 0; 8288852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8296701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8301999SN/A return -EFAULT; 8316701Sgblack@eecs.umich.edu } 8321999SN/A 8336701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8341999SN/A mode_t hostMode = 0; 8351999SN/A 8361999SN/A // XXX translate mode flags via OS::something??? 8371999SN/A hostMode = mode; 8381999SN/A 8393669Sbinkertn@umich.edu // Adjust path for current working directory 8403669Sbinkertn@umich.edu path = process->fullPath(path); 8413669Sbinkertn@umich.edu 8421999SN/A // do the chmod 8431999SN/A int result = chmod(path.c_str(), hostMode); 8441999SN/A if (result < 0) 8452218SN/A return -errno; 8461999SN/A 8471999SN/A return 0; 8481999SN/A} 8491999SN/A 8501999SN/A 8511999SN/A/// Target fchmod() handler. 8521999SN/Atemplate <class OS> 8531999SN/ASyscallReturn 8543114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8552680Sktlim@umich.edu ThreadContext *tc) 8561999SN/A{ 8576701Sgblack@eecs.umich.edu int index = 0; 85810931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 85910931Sbrandon.potter@amd.com uint32_t mode = process->getSyscallArg(tc, index); 86010931Sbrandon.potter@amd.com 86110932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 86210931Sbrandon.potter@amd.com if (sim_fd < 0) 8631999SN/A return -EBADF; 8641999SN/A 8651999SN/A mode_t hostMode = 0; 8661999SN/A 8671999SN/A // XXX translate mode flags via OS::someting??? 8681999SN/A hostMode = mode; 8691999SN/A 8701999SN/A // do the fchmod 87110931Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 8721999SN/A if (result < 0) 8732218SN/A return -errno; 8741999SN/A 8751999SN/A return 0; 8761999SN/A} 8771999SN/A 8785877Shsul@eecs.umich.edu/// Target mremap() handler. 8795877Shsul@eecs.umich.edutemplate <class OS> 8805877Shsul@eecs.umich.eduSyscallReturn 8815877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8825877Shsul@eecs.umich.edu{ 8836701Sgblack@eecs.umich.edu int index = 0; 8846701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8856701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8866701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8876701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 88810027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 88910027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 89010027SChris.Adeniyi-Jones@arm.com 89110027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 89210027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8935877Shsul@eecs.umich.edu 89410318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 89510318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8965877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8975877Shsul@eecs.umich.edu return -EINVAL; 8985877Shsul@eecs.umich.edu } 8995877Shsul@eecs.umich.edu 90010486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 90110486Stjablin@gmail.com 9025877Shsul@eecs.umich.edu if (new_length > old_length) { 90310027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 90410027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 9055877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 9068601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 9075877Shsul@eecs.umich.edu process->mmap_end += diff; 9085877Shsul@eecs.umich.edu return start; 9095877Shsul@eecs.umich.edu } else { 91010027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 9115877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 9125877Shsul@eecs.umich.edu return -ENOMEM; 9135877Shsul@eecs.umich.edu } else { 91410027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 91510027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 91610027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 91710027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 91810027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 91910027SChris.Adeniyi-Jones@arm.com new_length - old_length); 9205877Shsul@eecs.umich.edu // add on the remaining unallocated pages 92110027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 92210027SChris.Adeniyi-Jones@arm.com new_length - old_length, 92310027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 92410027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 92510027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 92610027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 92710027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 92810027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 92910027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 93010027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 93110027SChris.Adeniyi-Jones@arm.com } 93210027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 93310027SChris.Adeniyi-Jones@arm.com return new_start; 9345877Shsul@eecs.umich.edu } 9355877Shsul@eecs.umich.edu } 9365877Shsul@eecs.umich.edu } else { 93710027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 93810027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 9398601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 94010027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 9415877Shsul@eecs.umich.edu } 9425877Shsul@eecs.umich.edu} 9431999SN/A 944378SN/A/// Target stat() handler. 945360SN/Atemplate <class OS> 9461450SN/ASyscallReturn 9473114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9482680Sktlim@umich.edu ThreadContext *tc) 949360SN/A{ 950360SN/A std::string path; 951360SN/A 9526701Sgblack@eecs.umich.edu int index = 0; 9538852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9546701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9556701Sgblack@eecs.umich.edu return -EFAULT; 9566701Sgblack@eecs.umich.edu } 9576701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 958360SN/A 9593669Sbinkertn@umich.edu // Adjust path for current working directory 9603669Sbinkertn@umich.edu path = process->fullPath(path); 9613669Sbinkertn@umich.edu 962360SN/A struct stat hostBuf; 963360SN/A int result = stat(path.c_str(), &hostBuf); 964360SN/A 965360SN/A if (result < 0) 9662218SN/A return -errno; 967360SN/A 9688706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 969360SN/A 9701458SN/A return 0; 971360SN/A} 972360SN/A 973360SN/A 9745074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9755074Ssaidi@eecs.umich.edutemplate <class OS> 9765074Ssaidi@eecs.umich.eduSyscallReturn 9775074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9785074Ssaidi@eecs.umich.edu ThreadContext *tc) 9795074Ssaidi@eecs.umich.edu{ 9805074Ssaidi@eecs.umich.edu std::string path; 9815074Ssaidi@eecs.umich.edu 9826701Sgblack@eecs.umich.edu int index = 0; 9838852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9846701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9855074Ssaidi@eecs.umich.edu return -EFAULT; 9866701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9875074Ssaidi@eecs.umich.edu 9885074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9895074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9905074Ssaidi@eecs.umich.edu 9915208Ssaidi@eecs.umich.edu#if NO_STAT64 9925208Ssaidi@eecs.umich.edu struct stat hostBuf; 9935208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9945208Ssaidi@eecs.umich.edu#else 9955074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9965074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9975208Ssaidi@eecs.umich.edu#endif 9985074Ssaidi@eecs.umich.edu 9995074Ssaidi@eecs.umich.edu if (result < 0) 10005074Ssaidi@eecs.umich.edu return -errno; 10015074Ssaidi@eecs.umich.edu 10028706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10035074Ssaidi@eecs.umich.edu 10045074Ssaidi@eecs.umich.edu return 0; 10055074Ssaidi@eecs.umich.edu} 10065074Ssaidi@eecs.umich.edu 10075074Ssaidi@eecs.umich.edu 100810027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 100910027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 101010027SChris.Adeniyi-Jones@arm.comSyscallReturn 101110027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 101210027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 101310027SChris.Adeniyi-Jones@arm.com{ 101410027SChris.Adeniyi-Jones@arm.com int index = 0; 101510027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 101610027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 101710793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 101810027SChris.Adeniyi-Jones@arm.com 101910027SChris.Adeniyi-Jones@arm.com std::string path; 102010027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 102110027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 102210027SChris.Adeniyi-Jones@arm.com return -EFAULT; 102310027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 102410027SChris.Adeniyi-Jones@arm.com 102510027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 102610027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 102710027SChris.Adeniyi-Jones@arm.com 102810027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 102910027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 103010027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 103110027SChris.Adeniyi-Jones@arm.com#else 103210027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 103310027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 103410027SChris.Adeniyi-Jones@arm.com#endif 103510027SChris.Adeniyi-Jones@arm.com 103610027SChris.Adeniyi-Jones@arm.com if (result < 0) 103710027SChris.Adeniyi-Jones@arm.com return -errno; 103810027SChris.Adeniyi-Jones@arm.com 103910027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 104010027SChris.Adeniyi-Jones@arm.com 104110027SChris.Adeniyi-Jones@arm.com return 0; 104210027SChris.Adeniyi-Jones@arm.com} 104310027SChris.Adeniyi-Jones@arm.com 104410027SChris.Adeniyi-Jones@arm.com 10451999SN/A/// Target fstat64() handler. 10461999SN/Atemplate <class OS> 10471999SN/ASyscallReturn 10483114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10492680Sktlim@umich.edu ThreadContext *tc) 10501999SN/A{ 10516701Sgblack@eecs.umich.edu int index = 0; 105210931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 10536701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 105410931Sbrandon.potter@amd.com 105510932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 105610931Sbrandon.potter@amd.com if (sim_fd < 0) 10571999SN/A return -EBADF; 10581999SN/A 10592764Sstever@eecs.umich.edu#if NO_STAT64 10602064SN/A struct stat hostBuf; 106110931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 10622064SN/A#else 10632064SN/A struct stat64 hostBuf; 106410931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 10652064SN/A#endif 10661999SN/A 10671999SN/A if (result < 0) 10682218SN/A return -errno; 10691999SN/A 107010931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10711999SN/A 10721999SN/A return 0; 10731999SN/A} 10741999SN/A 10751999SN/A 1076378SN/A/// Target lstat() handler. 1077360SN/Atemplate <class OS> 10781450SN/ASyscallReturn 10793114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10802680Sktlim@umich.edu ThreadContext *tc) 1081360SN/A{ 1082360SN/A std::string path; 1083360SN/A 10846701Sgblack@eecs.umich.edu int index = 0; 10858852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10866701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10876701Sgblack@eecs.umich.edu return -EFAULT; 10886701Sgblack@eecs.umich.edu } 10896701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1090360SN/A 10913669Sbinkertn@umich.edu // Adjust path for current working directory 10923669Sbinkertn@umich.edu path = process->fullPath(path); 10933669Sbinkertn@umich.edu 1094360SN/A struct stat hostBuf; 1095360SN/A int result = lstat(path.c_str(), &hostBuf); 1096360SN/A 1097360SN/A if (result < 0) 10981458SN/A return -errno; 1099360SN/A 11008706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1101360SN/A 11021458SN/A return 0; 1103360SN/A} 1104360SN/A 11051999SN/A/// Target lstat64() handler. 11061999SN/Atemplate <class OS> 11071999SN/ASyscallReturn 11083114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 11092680Sktlim@umich.edu ThreadContext *tc) 11101999SN/A{ 11111999SN/A std::string path; 11121999SN/A 11136701Sgblack@eecs.umich.edu int index = 0; 11148852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11156701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11166701Sgblack@eecs.umich.edu return -EFAULT; 11176701Sgblack@eecs.umich.edu } 11186701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11191999SN/A 11203669Sbinkertn@umich.edu // Adjust path for current working directory 11213669Sbinkertn@umich.edu path = process->fullPath(path); 11223669Sbinkertn@umich.edu 11232764Sstever@eecs.umich.edu#if NO_STAT64 11242064SN/A struct stat hostBuf; 11252064SN/A int result = lstat(path.c_str(), &hostBuf); 11262064SN/A#else 11271999SN/A struct stat64 hostBuf; 11281999SN/A int result = lstat64(path.c_str(), &hostBuf); 11292064SN/A#endif 11301999SN/A 11311999SN/A if (result < 0) 11321999SN/A return -errno; 11331999SN/A 11348706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11351999SN/A 11361999SN/A return 0; 11371999SN/A} 11381999SN/A 1139378SN/A/// Target fstat() handler. 1140360SN/Atemplate <class OS> 11411450SN/ASyscallReturn 11423114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11432680Sktlim@umich.edu ThreadContext *tc) 1144360SN/A{ 11456701Sgblack@eecs.umich.edu int index = 0; 114610931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11476701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1148360SN/A 114911380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1150360SN/A 115110932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 115210931Sbrandon.potter@amd.com if (sim_fd < 0) 11531458SN/A return -EBADF; 1154360SN/A 1155360SN/A struct stat hostBuf; 115610931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1157360SN/A 1158360SN/A if (result < 0) 11591458SN/A return -errno; 1160360SN/A 116110931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11622021SN/A 11631458SN/A return 0; 1164360SN/A} 1165360SN/A 1166360SN/A 11671706SN/A/// Target statfs() handler. 11681706SN/Atemplate <class OS> 11691706SN/ASyscallReturn 11703114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11712680Sktlim@umich.edu ThreadContext *tc) 11721706SN/A{ 11731706SN/A std::string path; 11741706SN/A 11756701Sgblack@eecs.umich.edu int index = 0; 11768852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11776701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11786701Sgblack@eecs.umich.edu return -EFAULT; 11796701Sgblack@eecs.umich.edu } 11806701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11811706SN/A 11823669Sbinkertn@umich.edu // Adjust path for current working directory 11833669Sbinkertn@umich.edu path = process->fullPath(path); 11843669Sbinkertn@umich.edu 11851706SN/A struct statfs hostBuf; 11861706SN/A int result = statfs(path.c_str(), &hostBuf); 11871706SN/A 11881706SN/A if (result < 0) 11892218SN/A return -errno; 11901706SN/A 119111759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11921706SN/A 11931706SN/A return 0; 11941706SN/A} 11951706SN/A 11961706SN/A 11971706SN/A/// Target fstatfs() handler. 11981706SN/Atemplate <class OS> 11991706SN/ASyscallReturn 12003114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12012680Sktlim@umich.edu ThreadContext *tc) 12021706SN/A{ 12036701Sgblack@eecs.umich.edu int index = 0; 120410931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 12056701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 12061706SN/A 120710932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 120810931Sbrandon.potter@amd.com if (sim_fd < 0) 12091706SN/A return -EBADF; 12101706SN/A 12111706SN/A struct statfs hostBuf; 121210931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 12131706SN/A 12141706SN/A if (result < 0) 12152218SN/A return -errno; 12161706SN/A 121711759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 12181706SN/A 12191706SN/A return 0; 12201706SN/A} 12211706SN/A 12221706SN/A 12231999SN/A/// Target writev() handler. 12241999SN/Atemplate <class OS> 12251999SN/ASyscallReturn 12263114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12272680Sktlim@umich.edu ThreadContext *tc) 12281999SN/A{ 12296701Sgblack@eecs.umich.edu int index = 0; 123010931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 123110931Sbrandon.potter@amd.com 123210932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 123310931Sbrandon.potter@amd.com if (sim_fd < 0) 12341999SN/A return -EBADF; 12351999SN/A 12368852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 12376701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 12386701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 12391999SN/A struct iovec hiov[count]; 12406227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 12411999SN/A typename OS::tgt_iovec tiov; 12422461SN/A 12438852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12448852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12458737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12461999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 12478852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12488852Sandreas.hansson@arm.com hiov[i].iov_len); 12491999SN/A } 12501999SN/A 125110931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 12521999SN/A 12536227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12541999SN/A delete [] (char *)hiov[i].iov_base; 12551999SN/A 12561999SN/A if (result < 0) 12572218SN/A return -errno; 12581999SN/A 125910629Sjthestness@gmail.com return result; 12601999SN/A} 12611999SN/A 126211385Sbrandon.potter@amd.com/// Real mmap handler. 1263360SN/Atemplate <class OS> 12641450SN/ASyscallReturn 126511385Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 126611385Sbrandon.potter@amd.com bool is_mmap2) 1267360SN/A{ 12686701Sgblack@eecs.umich.edu int index = 0; 12696701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12706701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 127111383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 127211383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12738324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 127410486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1275360SN/A 127611385Sbrandon.potter@amd.com if (is_mmap2) 127711385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12789008Sgblack@eecs.umich.edu 127911383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 128011383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 128111383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 128211383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 128311383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 128411383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 128511383Sbrandon.potter@amd.com !length) { 128611383Sbrandon.potter@amd.com return -EINVAL; 128711383Sbrandon.potter@amd.com } 12888324Ssteve.reinhardt@amd.com 128911383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 129011383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 129111383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 129211383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 129311383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 129411383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 129511383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 129611383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 129711383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 129811383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 129911383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 130011383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 130111383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 130211383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 130311383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 130411383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 130511383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 130611383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 130711383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 130811383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 130911383Sbrandon.potter@amd.com // than we currently maintain. 131011383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 131111383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 131211383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 13138324Ssteve.reinhardt@amd.com } 13145877Shsul@eecs.umich.edu 131510486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 131610486Stjablin@gmail.com 131711383Sbrandon.potter@amd.com int sim_fd = -1; 131811383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 131911383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 132011624Smichael.lebeane@amd.com // Check for EmulatedDriver mmap 132111624Smichael.lebeane@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 132211624Smichael.lebeane@amd.com if (fde == NULL) 132311624Smichael.lebeane@amd.com return -EBADF; 132411624Smichael.lebeane@amd.com 132511624Smichael.lebeane@amd.com if (fde->driver != NULL) { 132611624Smichael.lebeane@amd.com return fde->driver->mmap(p, tc, start, length, prot, 132711624Smichael.lebeane@amd.com tgt_flags, tgt_fd, offset); 132811624Smichael.lebeane@amd.com } 132911624Smichael.lebeane@amd.com sim_fd = fde->fd; 133011624Smichael.lebeane@amd.com 133111383Sbrandon.potter@amd.com if (sim_fd < 0) 133211383Sbrandon.potter@amd.com return -EBADF; 1333360SN/A 133411383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 133511383Sbrandon.potter@amd.com sim_fd, offset); 13368600Ssteve.reinhardt@amd.com 133711383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 133811383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 133911383Sbrandon.potter@amd.com return -errno; 13408600Ssteve.reinhardt@amd.com } 13412544SN/A } 13422544SN/A 134311383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 134411383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 134511383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 134611386Ssteve.reinhardt@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 134711386Ssteve.reinhardt@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 134811383Sbrandon.potter@amd.com } 134911383Sbrandon.potter@amd.com 135011383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 135111383Sbrandon.potter@amd.com start, start + length - 1); 135211383Sbrandon.potter@amd.com 135311383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 135411383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 135511383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 135611383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 135711383Sbrandon.potter@amd.com if (clobber) { 135811383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 135911383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 136011383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 136111383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 136211383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13638600Ssteve.reinhardt@amd.com } 13646672Sgblack@eecs.umich.edu } 13658600Ssteve.reinhardt@amd.com 136611383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 136711383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 136811383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 13698601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 13702544SN/A 137111383Sbrandon.potter@amd.com // Transfer content into target address space. 137211383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 137311383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 137411383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 137511383Sbrandon.potter@amd.com // with something like: 137611383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 137711383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 137811383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 137911383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 138011383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 138111383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 138211383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 138311383Sbrandon.potter@amd.com } else { 138411383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 138511383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 138611383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 138711383Sbrandon.potter@amd.com // the host into the target address space. 138811383Sbrandon.potter@amd.com struct stat file_stat; 138911383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 139011383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 139111383Sbrandon.potter@amd.com 139211383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 139311383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 139411383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 139511383Sbrandon.potter@amd.com // on the specified offset into the file. 139611383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 139711383Sbrandon.potter@amd.com length); 139811383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 139911383Sbrandon.potter@amd.com 140011383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 140111383Sbrandon.potter@amd.com munmap(pmap, length); 140211383Sbrandon.potter@amd.com 140311392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 140411392Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 140511392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 140611392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 140711392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 140811392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 140911392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 141011392Sbrandon.potter@amd.com if (interpreter) { 141111392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 141211392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 141311392Sbrandon.potter@amd.com 141411392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 141511392Sbrandon.potter@amd.com 141611392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 141711392Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 141811392Sbrandon.potter@amd.com 141911392Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(fde->filename); 142011392Sbrandon.potter@amd.com 142111392Sbrandon.potter@amd.com if (lib) { 142211392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 142311392Sbrandon.potter@amd.com lib->textBase(), start); 142411392Sbrandon.potter@amd.com } 142511392Sbrandon.potter@amd.com } 142611392Sbrandon.potter@amd.com } 142711392Sbrandon.potter@amd.com 142811383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 142911383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 143011383Sbrandon.potter@amd.com // execution (hopefully). 143111383Sbrandon.potter@amd.com } 143211383Sbrandon.potter@amd.com 14331458SN/A return start; 1434360SN/A} 1435360SN/A 143611593Santhony.gutierrez@amd.comtemplate <class OS> 143711593Santhony.gutierrez@amd.comSyscallReturn 143811593Santhony.gutierrez@amd.compwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 143911593Santhony.gutierrez@amd.com{ 144011593Santhony.gutierrez@amd.com int index = 0; 144111593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 144211593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 144311593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 144411593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 144511593Santhony.gutierrez@amd.com 144611593Santhony.gutierrez@amd.com int sim_fd = p->getSimFD(tgt_fd); 144711593Santhony.gutierrez@amd.com if (sim_fd < 0) 144811593Santhony.gutierrez@amd.com return -EBADF; 144911593Santhony.gutierrez@amd.com 145011593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 145111593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 145211593Santhony.gutierrez@amd.com 145311594Santhony.gutierrez@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 145411593Santhony.gutierrez@amd.com 145511593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 145611593Santhony.gutierrez@amd.com} 145711593Santhony.gutierrez@amd.com 145811385Sbrandon.potter@amd.com/// Target mmap() handler. 145911385Sbrandon.potter@amd.comtemplate <class OS> 146011385Sbrandon.potter@amd.comSyscallReturn 146111385Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 146211385Sbrandon.potter@amd.com{ 146311385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 146411385Sbrandon.potter@amd.com} 146511385Sbrandon.potter@amd.com 146611385Sbrandon.potter@amd.com/// Target mmap2() handler. 146711385Sbrandon.potter@amd.comtemplate <class OS> 146811385Sbrandon.potter@amd.comSyscallReturn 146911385Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 147011385Sbrandon.potter@amd.com{ 147111385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 147211385Sbrandon.potter@amd.com} 147311385Sbrandon.potter@amd.com 1474378SN/A/// Target getrlimit() handler. 1475360SN/Atemplate <class OS> 14761450SN/ASyscallReturn 14773114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14782680Sktlim@umich.edu ThreadContext *tc) 1479360SN/A{ 14806701Sgblack@eecs.umich.edu int index = 0; 14816701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 14826701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1483360SN/A 1484360SN/A switch (resource) { 14852064SN/A case OS::TGT_RLIMIT_STACK: 14865877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14872064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14888737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14898737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14902064SN/A break; 1491360SN/A 14925877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 14935877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 14945877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14958737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14968737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14975877Shsul@eecs.umich.edu break; 14985877Shsul@eecs.umich.edu 14992064SN/A default: 150010794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 150110794Sbrandon.potter@amd.com return -EINVAL; 15022064SN/A break; 1503360SN/A } 1504360SN/A 15058706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 15061458SN/A return 0; 1507360SN/A} 1508360SN/A 150910796Sbrandon.potter@amd.com/// Target clock_gettime() function. 151010796Sbrandon.potter@amd.comtemplate <class OS> 151110796Sbrandon.potter@amd.comSyscallReturn 151210796Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 151310796Sbrandon.potter@amd.com{ 151410796Sbrandon.potter@amd.com int index = 1; 151510796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 151610796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 151710796Sbrandon.potter@amd.com 151810796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 151910796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 152010796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 152110796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 152210796Sbrandon.potter@amd.com 152310796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 152410796Sbrandon.potter@amd.com 152510796Sbrandon.potter@amd.com return 0; 152610796Sbrandon.potter@amd.com} 152710796Sbrandon.potter@amd.com 152811337SMichael.Lebeane@amd.com/// Target clock_getres() function. 152911337SMichael.Lebeane@amd.comtemplate <class OS> 153011337SMichael.Lebeane@amd.comSyscallReturn 153111337SMichael.Lebeane@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 153211337SMichael.Lebeane@amd.com{ 153311337SMichael.Lebeane@amd.com int index = 1; 153411337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 153511337SMichael.Lebeane@amd.com 153611337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 153711337SMichael.Lebeane@amd.com tp->tv_sec = 0; 153811337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 153911337SMichael.Lebeane@amd.com 154011337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 154111337SMichael.Lebeane@amd.com 154211337SMichael.Lebeane@amd.com return 0; 154311337SMichael.Lebeane@amd.com} 154411337SMichael.Lebeane@amd.com 1545378SN/A/// Target gettimeofday() handler. 1546360SN/Atemplate <class OS> 15471450SN/ASyscallReturn 15483114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15492680Sktlim@umich.edu ThreadContext *tc) 1550360SN/A{ 15516701Sgblack@eecs.umich.edu int index = 0; 15526701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1553360SN/A 155410796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1555360SN/A tp->tv_sec += seconds_since_epoch; 15566109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 15576109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1558360SN/A 15598706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1560360SN/A 15611458SN/A return 0; 1562360SN/A} 1563360SN/A 1564360SN/A 15651999SN/A/// Target utimes() handler. 15661999SN/Atemplate <class OS> 15671999SN/ASyscallReturn 15683114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15692680Sktlim@umich.edu ThreadContext *tc) 15701999SN/A{ 15711999SN/A std::string path; 15721999SN/A 15736701Sgblack@eecs.umich.edu int index = 0; 15748852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 15756701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 15766701Sgblack@eecs.umich.edu return -EFAULT; 15776701Sgblack@eecs.umich.edu } 15781999SN/A 15796701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 15806701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 15818706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 15821999SN/A 15831999SN/A struct timeval hostTimeval[2]; 15841999SN/A for (int i = 0; i < 2; ++i) 15851999SN/A { 15868737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15878737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15881999SN/A } 15893669Sbinkertn@umich.edu 15903669Sbinkertn@umich.edu // Adjust path for current working directory 15913669Sbinkertn@umich.edu path = process->fullPath(path); 15923669Sbinkertn@umich.edu 15931999SN/A int result = utimes(path.c_str(), hostTimeval); 15941999SN/A 15951999SN/A if (result < 0) 15961999SN/A return -errno; 15971999SN/A 15981999SN/A return 0; 15991999SN/A} 1600378SN/A/// Target getrusage() function. 1601360SN/Atemplate <class OS> 16021450SN/ASyscallReturn 16033114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16042680Sktlim@umich.edu ThreadContext *tc) 1605360SN/A{ 16066701Sgblack@eecs.umich.edu int index = 0; 16076701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 16086701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1609360SN/A 16103670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 16113670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1612360SN/A rup->ru_stime.tv_sec = 0; 1613360SN/A rup->ru_stime.tv_usec = 0; 1614360SN/A rup->ru_maxrss = 0; 1615360SN/A rup->ru_ixrss = 0; 1616360SN/A rup->ru_idrss = 0; 1617360SN/A rup->ru_isrss = 0; 1618360SN/A rup->ru_minflt = 0; 1619360SN/A rup->ru_majflt = 0; 1620360SN/A rup->ru_nswap = 0; 1621360SN/A rup->ru_inblock = 0; 1622360SN/A rup->ru_oublock = 0; 1623360SN/A rup->ru_msgsnd = 0; 1624360SN/A rup->ru_msgrcv = 0; 1625360SN/A rup->ru_nsignals = 0; 1626360SN/A rup->ru_nvcsw = 0; 1627360SN/A rup->ru_nivcsw = 0; 1628360SN/A 16293670Sbinkertn@umich.edu switch (who) { 16303670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 163110796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 16328737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 16338737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 16343670Sbinkertn@umich.edu break; 16353670Sbinkertn@umich.edu 16363670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 16373670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 16383670Sbinkertn@umich.edu break; 16393670Sbinkertn@umich.edu 16403670Sbinkertn@umich.edu default: 16413670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 16423670Sbinkertn@umich.edu // plow ahead 16433670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 16443670Sbinkertn@umich.edu who); 16453670Sbinkertn@umich.edu } 16463670Sbinkertn@umich.edu 16478706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1648360SN/A 16491458SN/A return 0; 1650360SN/A} 1651360SN/A 16526683Stjones1@inf.ed.ac.uk/// Target times() function. 16536683Stjones1@inf.ed.ac.uktemplate <class OS> 16546683Stjones1@inf.ed.ac.ukSyscallReturn 16556683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16566683Stjones1@inf.ed.ac.uk ThreadContext *tc) 16576683Stjones1@inf.ed.ac.uk{ 16586701Sgblack@eecs.umich.edu int index = 0; 16596701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 16606683Stjones1@inf.ed.ac.uk 16616683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 16627823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16636683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 16646683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 16656683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 16666683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 16676683Stjones1@inf.ed.ac.uk 16686683Stjones1@inf.ed.ac.uk // Convert to host endianness 16698737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 16706683Stjones1@inf.ed.ac.uk 16716683Stjones1@inf.ed.ac.uk // Write back 16728706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 16736683Stjones1@inf.ed.ac.uk 16746683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 16756683Stjones1@inf.ed.ac.uk return clocks; 16766683Stjones1@inf.ed.ac.uk} 16772553SN/A 16786684Stjones1@inf.ed.ac.uk/// Target time() function. 16796684Stjones1@inf.ed.ac.uktemplate <class OS> 16806684Stjones1@inf.ed.ac.ukSyscallReturn 16816684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16826684Stjones1@inf.ed.ac.uk ThreadContext *tc) 16836684Stjones1@inf.ed.ac.uk{ 16846684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 168510796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 16866684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 16876684Stjones1@inf.ed.ac.uk 16886701Sgblack@eecs.umich.edu int index = 0; 16896701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 169011321Ssteve.reinhardt@amd.com if (taddr != 0) { 16916684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 16928737Skoansin.tan@gmail.com t = TheISA::htog(t); 16938852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 16948852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16956684Stjones1@inf.ed.ac.uk } 16966684Stjones1@inf.ed.ac.uk return sec; 16976684Stjones1@inf.ed.ac.uk} 16982553SN/A 16992553SN/A 17001354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1701