syscall_emul.hh revision 11759
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 1606109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1611706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1623114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 163378SN/A 1646109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1656109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1666109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1676109Ssanchezd@stanford.edu 168378SN/A/// Target getpagesize() handler. 1691706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1703114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 171378SN/A 1725748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1735748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1745748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 175378SN/A 176378SN/A/// Target close() handler. 1771706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1783114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 179378SN/A 180378SN/A/// Target read() handler. 1811706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1823114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 183378SN/A 184378SN/A/// Target write() handler. 1851706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1863114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 187378SN/A 188378SN/A/// Target lseek() handler. 1891706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 191378SN/A 1924118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1934118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1944118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1954118Sgblack@eecs.umich.edu 196378SN/A/// Target munmap() handler. 1971706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1983114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 199378SN/A 200378SN/A/// Target gethostname() handler. 2011706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2023114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 203360SN/A 2045513SMichael.Adler@intel.com/// Target getcwd() handler. 2055513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2065513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2075513SMichael.Adler@intel.com 20810203SAli.Saidi@ARM.com/// Target readlink() handler. 20910203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 21010203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 21110203SAli.Saidi@ARM.com int index = 0); 2125513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2135513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2145513SMichael.Adler@intel.com 215511SN/A/// Target unlink() handler. 21610633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 21710633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc, 21810633Smichaelupton@gmail.com int index); 2191706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2203114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 221511SN/A 2225513SMichael.Adler@intel.com/// Target mkdir() handler. 2235513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2245513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2255513SMichael.Adler@intel.com 226511SN/A/// Target rename() handler. 2271706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2283114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2291706SN/A 2301706SN/A 2311706SN/A/// Target truncate() handler. 2321706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2333114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2341706SN/A 2351706SN/A 2361706SN/A/// Target ftruncate() handler. 2371706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2383114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2391706SN/A 240511SN/A 2416703Svince@csl.cornell.edu/// Target truncate64() handler. 2426703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2436703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2446703Svince@csl.cornell.edu 2456685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2466685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2476685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2486685Stjones1@inf.ed.ac.uk 2496685Stjones1@inf.ed.ac.uk 2505513SMichael.Adler@intel.com/// Target umask() handler. 2515513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2525513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2535513SMichael.Adler@intel.com 2545513SMichael.Adler@intel.com 2551999SN/A/// Target chown() handler. 2561999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2573114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2581999SN/A 2591999SN/A 2601999SN/A/// Target fchown() handler. 2611999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2623114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2631999SN/A 2643079Sstever@eecs.umich.edu/// Target dup() handler. 2653079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2663114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2673079Sstever@eecs.umich.edu 2682093SN/A/// Target fnctl() handler. 2692093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2703114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2712093SN/A 2722687Sksewell@umich.edu/// Target fcntl64() handler. 2732687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2743114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2752687Sksewell@umich.edu 2762238SN/A/// Target setuid() handler. 2772238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2783114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2792238SN/A 2802238SN/A/// Target getpid() handler. 2812238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2823114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2832238SN/A 2842238SN/A/// Target getuid() handler. 2852238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2863114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2872238SN/A 2882238SN/A/// Target getgid() handler. 2892238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2912238SN/A 2922238SN/A/// Target getppid() handler. 2932238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2943114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2952238SN/A 2962238SN/A/// Target geteuid() handler. 2972238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2983114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2992238SN/A 3002238SN/A/// Target getegid() handler. 3012238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3023114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3032238SN/A 3046109Ssanchezd@stanford.edu/// Target clone() handler. 3056109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3066109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3072238SN/A 3089455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3099455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3109455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 31110203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 31210203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 31310203SAli.Saidi@ARM.com int index); 3149455Smitch.hayenga+gem5@gmail.com 3159112Smarc.orr@gmail.com/// Futex system call 3169112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3179112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3189112Smarc.orr@gmail.comtemplate <class OS> 3199112Smarc.orr@gmail.comSyscallReturn 3209112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3219112Smarc.orr@gmail.com ThreadContext *tc) 3229112Smarc.orr@gmail.com{ 3239112Smarc.orr@gmail.com int index_uaddr = 0; 3249112Smarc.orr@gmail.com int index_op = 1; 3259112Smarc.orr@gmail.com int index_val = 2; 3269112Smarc.orr@gmail.com int index_timeout = 3; 3279112Smarc.orr@gmail.com 3289112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3299112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3309112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3319112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3329112Smarc.orr@gmail.com 3339112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3349112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3359112Smarc.orr@gmail.com 3369112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3379112Smarc.orr@gmail.com uaddr, op, val); 3389112Smarc.orr@gmail.com 3399238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3409112Smarc.orr@gmail.com 3419112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3429112Smarc.orr@gmail.com if (timeout != 0) { 3439112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3449112Smarc.orr@gmail.com "we'll wait indefinitely"); 3459112Smarc.orr@gmail.com } 3469112Smarc.orr@gmail.com 3479112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3489112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3499112Smarc.orr@gmail.com int mem_val = *((int *)buf); 35011367Sandreas.hansson@arm.com delete[] buf; 3519112Smarc.orr@gmail.com 35211321Ssteve.reinhardt@amd.com if (val != mem_val) { 3539112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3549112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3559112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3569112Smarc.orr@gmail.com } 3579112Smarc.orr@gmail.com 3589112Smarc.orr@gmail.com // Queue the thread context 3599112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3609112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3619112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3629112Smarc.orr@gmail.com } else { 3639112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3649112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3659112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3669112Smarc.orr@gmail.com } 3679112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3689112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3699112Smarc.orr@gmail.com "thread context\n"); 3709112Smarc.orr@gmail.com tc->suspend(); 3719112Smarc.orr@gmail.com return 0; 3729112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3739112Smarc.orr@gmail.com int wokenUp = 0; 3749112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3759112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3769112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3779112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3789112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3799112Smarc.orr@gmail.com tcWaitList->pop_front(); 3809112Smarc.orr@gmail.com wokenUp++; 3819112Smarc.orr@gmail.com } 38211321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3839112Smarc.orr@gmail.com futex_map.erase(uaddr); 3849112Smarc.orr@gmail.com delete tcWaitList; 3859112Smarc.orr@gmail.com } 3869112Smarc.orr@gmail.com } 3879112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3889112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3899112Smarc.orr@gmail.com return wokenUp; 3909112Smarc.orr@gmail.com } else { 3919238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3929112Smarc.orr@gmail.com return 0; 3939112Smarc.orr@gmail.com } 3949112Smarc.orr@gmail.com 3959112Smarc.orr@gmail.com} 3969112Smarc.orr@gmail.com 3972238SN/A 3982238SN/A/// Pseudo Funcs - These functions use a different return convension, 3992238SN/A/// returning a second value in a register other than the normal return register 4002238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 4013114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4022238SN/A 4032238SN/A/// Target getpidPseudo() handler. 4042238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4053114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4062238SN/A 4072238SN/A/// Target getuidPseudo() handler. 4082238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 4093114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4102238SN/A 4112238SN/A/// Target getgidPseudo() handler. 4122238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4133114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4142238SN/A 4152238SN/A 4161354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4171354SN/Aconst int one_million = 1000000; 41810796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 41910796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 4201354SN/A 4211354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4221354SN/A/// by my reckoning. We want to keep this a constant (not use the 4231354SN/A/// real-world time) to keep simulations repeatable. 4241354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4251354SN/A 4261354SN/A/// Helper function to convert current elapsed time to seconds and 4271354SN/A/// microseconds. 4281354SN/Atemplate <class T1, class T2> 4291354SN/Avoid 43010796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 4311354SN/A{ 43210796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 4331354SN/A sec = elapsed_usecs / one_million; 4341354SN/A usec = elapsed_usecs % one_million; 4351354SN/A} 4361354SN/A 43710796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 43810796Sbrandon.potter@amd.com/// nanoseconds. 43910796Sbrandon.potter@amd.comtemplate <class T1, class T2> 44010796Sbrandon.potter@amd.comvoid 44110796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 44210796Sbrandon.potter@amd.com{ 44310796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 44410796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 44510796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 44610796Sbrandon.potter@amd.com} 44710796Sbrandon.potter@amd.com 448360SN/A////////////////////////////////////////////////////////////////////// 449360SN/A// 450360SN/A// The following emulation functions are generic, but need to be 451360SN/A// templated to account for differences in types, constants, etc. 452360SN/A// 453360SN/A////////////////////////////////////////////////////////////////////// 454360SN/A 45511759Sbrandon.potter@amd.com typedef struct statfs hst_statfs; 4563113Sgblack@eecs.umich.edu#if NO_STAT64 4573113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4583113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4593113Sgblack@eecs.umich.edu#else 4603113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4613113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4623113Sgblack@eecs.umich.edu#endif 4633113Sgblack@eecs.umich.edu 4643113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4653113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4663113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4673113Sgblack@eecs.umich.edu 4683113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4693113Sgblack@eecs.umich.edustatic void 4703113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4713113Sgblack@eecs.umich.edu{ 4724189Sgblack@eecs.umich.edu using namespace TheISA; 4734189Sgblack@eecs.umich.edu 4743113Sgblack@eecs.umich.edu if (fakeTTY) 4753113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4763113Sgblack@eecs.umich.edu else 4773113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4788737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4793113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4808737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4813277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4825515SMichael.Adler@intel.com if (fakeTTY) { 4835515SMichael.Adler@intel.com // Claim to be a character device 4845515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4855515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4865515SMichael.Adler@intel.com } 4878737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4883277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4898737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4903277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4918737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4923277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4938737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4943113Sgblack@eecs.umich.edu if (fakeTTY) 4953113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4963113Sgblack@eecs.umich.edu else 4973113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4988737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4993113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 5008737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 5013114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5028737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5033114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5048737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5053114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5068737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5074061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5084061Sgblack@eecs.umich.edu // consistently across different hosts. 5094061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5108737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5113113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5128737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5133113Sgblack@eecs.umich.edu} 5143113Sgblack@eecs.umich.edu 5153113Sgblack@eecs.umich.edu// Same for stat64 5163113Sgblack@eecs.umich.edu 5173113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5183113Sgblack@eecs.umich.edustatic void 5193113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5203113Sgblack@eecs.umich.edu{ 5214189Sgblack@eecs.umich.edu using namespace TheISA; 5224189Sgblack@eecs.umich.edu 5233113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5243113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5253113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5268737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5273113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5288737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5293113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5308737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5313113Sgblack@eecs.umich.edu#else 5323113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5333113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5343113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5353113Sgblack@eecs.umich.edu#endif 5363113Sgblack@eecs.umich.edu} 5373113Sgblack@eecs.umich.edu 5383113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5393113Sgblack@eecs.umich.edutemplate<class OS> 5403113Sgblack@eecs.umich.edustatic void 5418852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5423113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5433113Sgblack@eecs.umich.edu{ 5443113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5453113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5463113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5473113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5483113Sgblack@eecs.umich.edu} 5493113Sgblack@eecs.umich.edu 5503113Sgblack@eecs.umich.edutemplate<class OS> 5513113Sgblack@eecs.umich.edustatic void 5528852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5533113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5543113Sgblack@eecs.umich.edu{ 5553113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5563113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5576686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5583113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5593113Sgblack@eecs.umich.edu} 5603113Sgblack@eecs.umich.edu 56111759Sbrandon.potter@amd.comtemplate <class OS> 56211759Sbrandon.potter@amd.comstatic void 56311759Sbrandon.potter@amd.comcopyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr, 56411759Sbrandon.potter@amd.com hst_statfs *host) 56511759Sbrandon.potter@amd.com{ 56611759Sbrandon.potter@amd.com TypedBufferArg<typename OS::tgt_statfs> tgt(addr); 56711759Sbrandon.potter@amd.com 56811759Sbrandon.potter@amd.com#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__) 56911759Sbrandon.potter@amd.com tgt->f_type = 0; 57011759Sbrandon.potter@amd.com#else 57111759Sbrandon.potter@amd.com tgt->f_type = TheISA::htog(host->f_type); 57211759Sbrandon.potter@amd.com#endif 57311759Sbrandon.potter@amd.com tgt->f_bsize = TheISA::htog(host->f_bsize); 57411759Sbrandon.potter@amd.com tgt->f_blocks = TheISA::htog(host->f_blocks); 57511759Sbrandon.potter@amd.com tgt->f_bfree = TheISA::htog(host->f_bfree); 57611759Sbrandon.potter@amd.com tgt->f_bavail = TheISA::htog(host->f_bavail); 57711759Sbrandon.potter@amd.com tgt->f_files = TheISA::htog(host->f_files); 57811759Sbrandon.potter@amd.com tgt->f_ffree = TheISA::htog(host->f_ffree); 57911759Sbrandon.potter@amd.com memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid)); 58011759Sbrandon.potter@amd.com tgt->f_namelen = TheISA::htog(host->f_namelen); 58111759Sbrandon.potter@amd.com tgt->f_frsize = TheISA::htog(host->f_frsize); 58211759Sbrandon.potter@amd.com memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare)); 58311759Sbrandon.potter@amd.com 58411759Sbrandon.potter@amd.com tgt.copyOut(mem); 58511759Sbrandon.potter@amd.com} 58611759Sbrandon.potter@amd.com 587378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 588378SN/A/// only to find out if their stdout is a tty, to determine whether to 5899141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5909141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 591360SN/Atemplate <class OS> 5921450SN/ASyscallReturn 5933114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5942680Sktlim@umich.edu ThreadContext *tc) 595360SN/A{ 5966701Sgblack@eecs.umich.edu int index = 0; 59710930Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 5986701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 599360SN/A 60010930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 601360SN/A 60210932Sbrandon.potter@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 60310496Ssteve.reinhardt@amd.com 60410930Sbrandon.potter@amd.com if (fde == NULL) { 605360SN/A // doesn't map to any simulator fd: not a valid target fd 6061458SN/A return -EBADF; 607360SN/A } 608360SN/A 60910930Sbrandon.potter@amd.com if (fde->driver != NULL) { 61010930Sbrandon.potter@amd.com return fde->driver->ioctl(process, tc, req); 61110496Ssteve.reinhardt@amd.com } 61210496Ssteve.reinhardt@amd.com 6139141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 6141458SN/A return -ENOTTY; 6159141Smarc.orr@gmail.com } 616360SN/A 6179141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 61810930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 6199141Smarc.orr@gmail.com return -ENOTTY; 620360SN/A} 621360SN/A 622360SN/Atemplate <class OS> 62310027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 6243114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 62510027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 626360SN/A{ 627360SN/A std::string path; 628360SN/A 6298852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 6306701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6311458SN/A return -EFAULT; 632360SN/A 6336701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6346701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 635360SN/A int hostFlags = 0; 636360SN/A 637360SN/A // translate open flags 638360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 639360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 640360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 641360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 642360SN/A } 643360SN/A } 644360SN/A 645360SN/A // any target flags left? 646360SN/A if (tgtFlags != 0) 6471706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 648360SN/A 649360SN/A#ifdef __CYGWIN32__ 650360SN/A hostFlags |= O_BINARY; 651360SN/A#endif 652360SN/A 6533669Sbinkertn@umich.edu // Adjust path for current working directory 6543669Sbinkertn@umich.edu path = process->fullPath(path); 6553669Sbinkertn@umich.edu 6561706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6571706SN/A 65810496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 65910496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 66010496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 66110496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 66210496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 66310496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 66410496Ssteve.reinhardt@amd.com return -ENOENT; 66510496Ssteve.reinhardt@amd.com } 66610496Ssteve.reinhardt@amd.com 66710496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 66810496Ssteve.reinhardt@amd.com if (drv != NULL) { 66910496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 67010496Ssteve.reinhardt@amd.com // process if necessary. 67110496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 67210496Ssteve.reinhardt@amd.com } 67310496Ssteve.reinhardt@amd.com 67410496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 67510496Ssteve.reinhardt@amd.com // /dev/zero 67610496Ssteve.reinhardt@amd.com } 67710496Ssteve.reinhardt@amd.com 6785795Ssaidi@eecs.umich.edu int fd; 6799143Ssteve.reinhardt@amd.com int local_errno; 6809142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6819142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6829143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6835795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6849143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6855795Ssaidi@eecs.umich.edu } else { 6865795Ssaidi@eecs.umich.edu // open the file 6875795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6889143Ssteve.reinhardt@amd.com local_errno = errno; 6895795Ssaidi@eecs.umich.edu } 690360SN/A 6919143Ssteve.reinhardt@amd.com if (fd == -1) 6929143Ssteve.reinhardt@amd.com return -local_errno; 6939143Ssteve.reinhardt@amd.com 69410932Sbrandon.potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 695360SN/A} 696360SN/A 69710027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 69810027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 69910027SChris.Adeniyi-Jones@arm.comSyscallReturn 70010027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70110027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 70210027SChris.Adeniyi-Jones@arm.com{ 70310027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 70410027SChris.Adeniyi-Jones@arm.com} 70510027SChris.Adeniyi-Jones@arm.com 70610027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 70710027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 70810027SChris.Adeniyi-Jones@arm.comSyscallReturn 70910027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 71010027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 71110027SChris.Adeniyi-Jones@arm.com{ 71210027SChris.Adeniyi-Jones@arm.com int index = 0; 71310027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 71410027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 71510027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 71610027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 71710027SChris.Adeniyi-Jones@arm.com} 71810027SChris.Adeniyi-Jones@arm.com 71910633Smichaelupton@gmail.com/// Target unlinkat() handler. 72010633Smichaelupton@gmail.comtemplate <class OS> 72110633Smichaelupton@gmail.comSyscallReturn 72210633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 72310633Smichaelupton@gmail.com ThreadContext *tc) 72410633Smichaelupton@gmail.com{ 72510633Smichaelupton@gmail.com int index = 0; 72610633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 72710633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 72810633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 72910633Smichaelupton@gmail.com 73010633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 73110633Smichaelupton@gmail.com} 73210633Smichaelupton@gmail.com 73310203SAli.Saidi@ARM.com/// Target facessat() handler 73410203SAli.Saidi@ARM.comtemplate <class OS> 73510203SAli.Saidi@ARM.comSyscallReturn 73610203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 73710203SAli.Saidi@ARM.com ThreadContext *tc) 73810203SAli.Saidi@ARM.com{ 73910203SAli.Saidi@ARM.com int index = 0; 74010203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 74110203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 74210203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 74310203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 74410203SAli.Saidi@ARM.com} 74510203SAli.Saidi@ARM.com 74610203SAli.Saidi@ARM.com/// Target readlinkat() handler 74710203SAli.Saidi@ARM.comtemplate <class OS> 74810203SAli.Saidi@ARM.comSyscallReturn 74910203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 75010203SAli.Saidi@ARM.com ThreadContext *tc) 75110203SAli.Saidi@ARM.com{ 75210203SAli.Saidi@ARM.com int index = 0; 75310203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 75410203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 75510203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 75610203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 75710203SAli.Saidi@ARM.com} 75810203SAli.Saidi@ARM.com 75910850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 76010850SGiacomo.Gabrielli@arm.comtemplate <class OS> 76110850SGiacomo.Gabrielli@arm.comSyscallReturn 76210850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 76310850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 76410850SGiacomo.Gabrielli@arm.com{ 76510850SGiacomo.Gabrielli@arm.com int index = 0; 76610850SGiacomo.Gabrielli@arm.com 76710850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 76810850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 76910850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 77010850SGiacomo.Gabrielli@arm.com 77110850SGiacomo.Gabrielli@arm.com std::string old_name; 77210850SGiacomo.Gabrielli@arm.com 77310850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 77410850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 77510850SGiacomo.Gabrielli@arm.com return -EFAULT; 77610850SGiacomo.Gabrielli@arm.com 77710850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 77810850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 77910850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 78010850SGiacomo.Gabrielli@arm.com 78110850SGiacomo.Gabrielli@arm.com std::string new_name; 78210850SGiacomo.Gabrielli@arm.com 78310850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 78410850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 78510850SGiacomo.Gabrielli@arm.com return -EFAULT; 78610850SGiacomo.Gabrielli@arm.com 78710850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 78810850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 78910850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 79010850SGiacomo.Gabrielli@arm.com 79110850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 79210850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 79310850SGiacomo.Gabrielli@arm.com} 79410850SGiacomo.Gabrielli@arm.com 7956640Svince@csl.cornell.edu/// Target sysinfo() handler. 7966640Svince@csl.cornell.edutemplate <class OS> 7976640Svince@csl.cornell.eduSyscallReturn 7986640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7996640Svince@csl.cornell.edu ThreadContext *tc) 8006640Svince@csl.cornell.edu{ 8016640Svince@csl.cornell.edu 8026701Sgblack@eecs.umich.edu int index = 0; 8036701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 80410793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 8056640Svince@csl.cornell.edu 80611758Sbrandon.potter@amd.com sysinfo->uptime = seconds_since_epoch; 80711758Sbrandon.potter@amd.com sysinfo->totalram = process->system->memSize(); 80811758Sbrandon.potter@amd.com sysinfo->mem_unit = 1; 8096640Svince@csl.cornell.edu 8108706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 8116640Svince@csl.cornell.edu 8126701Sgblack@eecs.umich.edu return 0; 8136640Svince@csl.cornell.edu} 814360SN/A 8151999SN/A/// Target chmod() handler. 8161999SN/Atemplate <class OS> 8171999SN/ASyscallReturn 8183114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8192680Sktlim@umich.edu ThreadContext *tc) 8201999SN/A{ 8211999SN/A std::string path; 8221999SN/A 8236701Sgblack@eecs.umich.edu int index = 0; 8248852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8256701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8261999SN/A return -EFAULT; 8276701Sgblack@eecs.umich.edu } 8281999SN/A 8296701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8301999SN/A mode_t hostMode = 0; 8311999SN/A 8321999SN/A // XXX translate mode flags via OS::something??? 8331999SN/A hostMode = mode; 8341999SN/A 8353669Sbinkertn@umich.edu // Adjust path for current working directory 8363669Sbinkertn@umich.edu path = process->fullPath(path); 8373669Sbinkertn@umich.edu 8381999SN/A // do the chmod 8391999SN/A int result = chmod(path.c_str(), hostMode); 8401999SN/A if (result < 0) 8412218SN/A return -errno; 8421999SN/A 8431999SN/A return 0; 8441999SN/A} 8451999SN/A 8461999SN/A 8471999SN/A/// Target fchmod() handler. 8481999SN/Atemplate <class OS> 8491999SN/ASyscallReturn 8503114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8512680Sktlim@umich.edu ThreadContext *tc) 8521999SN/A{ 8536701Sgblack@eecs.umich.edu int index = 0; 85410931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 85510931Sbrandon.potter@amd.com uint32_t mode = process->getSyscallArg(tc, index); 85610931Sbrandon.potter@amd.com 85710932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 85810931Sbrandon.potter@amd.com if (sim_fd < 0) 8591999SN/A return -EBADF; 8601999SN/A 8611999SN/A mode_t hostMode = 0; 8621999SN/A 8631999SN/A // XXX translate mode flags via OS::someting??? 8641999SN/A hostMode = mode; 8651999SN/A 8661999SN/A // do the fchmod 86710931Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 8681999SN/A if (result < 0) 8692218SN/A return -errno; 8701999SN/A 8711999SN/A return 0; 8721999SN/A} 8731999SN/A 8745877Shsul@eecs.umich.edu/// Target mremap() handler. 8755877Shsul@eecs.umich.edutemplate <class OS> 8765877Shsul@eecs.umich.eduSyscallReturn 8775877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8785877Shsul@eecs.umich.edu{ 8796701Sgblack@eecs.umich.edu int index = 0; 8806701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8816701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8826701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8836701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 88410027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 88510027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 88610027SChris.Adeniyi-Jones@arm.com 88710027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 88810027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8895877Shsul@eecs.umich.edu 89010318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 89110318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8925877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8935877Shsul@eecs.umich.edu return -EINVAL; 8945877Shsul@eecs.umich.edu } 8955877Shsul@eecs.umich.edu 89610486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 89710486Stjablin@gmail.com 8985877Shsul@eecs.umich.edu if (new_length > old_length) { 89910027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 90010027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 9015877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 9028601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 9035877Shsul@eecs.umich.edu process->mmap_end += diff; 9045877Shsul@eecs.umich.edu return start; 9055877Shsul@eecs.umich.edu } else { 90610027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 9075877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 9085877Shsul@eecs.umich.edu return -ENOMEM; 9095877Shsul@eecs.umich.edu } else { 91010027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 91110027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 91210027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 91310027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 91410027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 91510027SChris.Adeniyi-Jones@arm.com new_length - old_length); 9165877Shsul@eecs.umich.edu // add on the remaining unallocated pages 91710027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 91810027SChris.Adeniyi-Jones@arm.com new_length - old_length, 91910027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 92010027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 92110027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 92210027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 92310027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 92410027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 92510027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 92610027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 92710027SChris.Adeniyi-Jones@arm.com } 92810027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 92910027SChris.Adeniyi-Jones@arm.com return new_start; 9305877Shsul@eecs.umich.edu } 9315877Shsul@eecs.umich.edu } 9325877Shsul@eecs.umich.edu } else { 93310027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 93410027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 9358601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 93610027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 9375877Shsul@eecs.umich.edu } 9385877Shsul@eecs.umich.edu} 9391999SN/A 940378SN/A/// Target stat() handler. 941360SN/Atemplate <class OS> 9421450SN/ASyscallReturn 9433114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9442680Sktlim@umich.edu ThreadContext *tc) 945360SN/A{ 946360SN/A std::string path; 947360SN/A 9486701Sgblack@eecs.umich.edu int index = 0; 9498852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9506701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9516701Sgblack@eecs.umich.edu return -EFAULT; 9526701Sgblack@eecs.umich.edu } 9536701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 954360SN/A 9553669Sbinkertn@umich.edu // Adjust path for current working directory 9563669Sbinkertn@umich.edu path = process->fullPath(path); 9573669Sbinkertn@umich.edu 958360SN/A struct stat hostBuf; 959360SN/A int result = stat(path.c_str(), &hostBuf); 960360SN/A 961360SN/A if (result < 0) 9622218SN/A return -errno; 963360SN/A 9648706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 965360SN/A 9661458SN/A return 0; 967360SN/A} 968360SN/A 969360SN/A 9705074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9715074Ssaidi@eecs.umich.edutemplate <class OS> 9725074Ssaidi@eecs.umich.eduSyscallReturn 9735074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9745074Ssaidi@eecs.umich.edu ThreadContext *tc) 9755074Ssaidi@eecs.umich.edu{ 9765074Ssaidi@eecs.umich.edu std::string path; 9775074Ssaidi@eecs.umich.edu 9786701Sgblack@eecs.umich.edu int index = 0; 9798852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9806701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9815074Ssaidi@eecs.umich.edu return -EFAULT; 9826701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9835074Ssaidi@eecs.umich.edu 9845074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9855074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9865074Ssaidi@eecs.umich.edu 9875208Ssaidi@eecs.umich.edu#if NO_STAT64 9885208Ssaidi@eecs.umich.edu struct stat hostBuf; 9895208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9905208Ssaidi@eecs.umich.edu#else 9915074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9925074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9935208Ssaidi@eecs.umich.edu#endif 9945074Ssaidi@eecs.umich.edu 9955074Ssaidi@eecs.umich.edu if (result < 0) 9965074Ssaidi@eecs.umich.edu return -errno; 9975074Ssaidi@eecs.umich.edu 9988706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9995074Ssaidi@eecs.umich.edu 10005074Ssaidi@eecs.umich.edu return 0; 10015074Ssaidi@eecs.umich.edu} 10025074Ssaidi@eecs.umich.edu 10035074Ssaidi@eecs.umich.edu 100410027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 100510027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 100610027SChris.Adeniyi-Jones@arm.comSyscallReturn 100710027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 100810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 100910027SChris.Adeniyi-Jones@arm.com{ 101010027SChris.Adeniyi-Jones@arm.com int index = 0; 101110027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 101210027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 101310793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 101410027SChris.Adeniyi-Jones@arm.com 101510027SChris.Adeniyi-Jones@arm.com std::string path; 101610027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 101710027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 101810027SChris.Adeniyi-Jones@arm.com return -EFAULT; 101910027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 102010027SChris.Adeniyi-Jones@arm.com 102110027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 102210027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 102310027SChris.Adeniyi-Jones@arm.com 102410027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 102510027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 102610027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 102710027SChris.Adeniyi-Jones@arm.com#else 102810027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 102910027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 103010027SChris.Adeniyi-Jones@arm.com#endif 103110027SChris.Adeniyi-Jones@arm.com 103210027SChris.Adeniyi-Jones@arm.com if (result < 0) 103310027SChris.Adeniyi-Jones@arm.com return -errno; 103410027SChris.Adeniyi-Jones@arm.com 103510027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 103610027SChris.Adeniyi-Jones@arm.com 103710027SChris.Adeniyi-Jones@arm.com return 0; 103810027SChris.Adeniyi-Jones@arm.com} 103910027SChris.Adeniyi-Jones@arm.com 104010027SChris.Adeniyi-Jones@arm.com 10411999SN/A/// Target fstat64() handler. 10421999SN/Atemplate <class OS> 10431999SN/ASyscallReturn 10443114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10452680Sktlim@umich.edu ThreadContext *tc) 10461999SN/A{ 10476701Sgblack@eecs.umich.edu int index = 0; 104810931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 10496701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 105010931Sbrandon.potter@amd.com 105110932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 105210931Sbrandon.potter@amd.com if (sim_fd < 0) 10531999SN/A return -EBADF; 10541999SN/A 10552764Sstever@eecs.umich.edu#if NO_STAT64 10562064SN/A struct stat hostBuf; 105710931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 10582064SN/A#else 10592064SN/A struct stat64 hostBuf; 106010931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 10612064SN/A#endif 10621999SN/A 10631999SN/A if (result < 0) 10642218SN/A return -errno; 10651999SN/A 106610931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10671999SN/A 10681999SN/A return 0; 10691999SN/A} 10701999SN/A 10711999SN/A 1072378SN/A/// Target lstat() handler. 1073360SN/Atemplate <class OS> 10741450SN/ASyscallReturn 10753114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10762680Sktlim@umich.edu ThreadContext *tc) 1077360SN/A{ 1078360SN/A std::string path; 1079360SN/A 10806701Sgblack@eecs.umich.edu int index = 0; 10818852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10826701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10836701Sgblack@eecs.umich.edu return -EFAULT; 10846701Sgblack@eecs.umich.edu } 10856701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1086360SN/A 10873669Sbinkertn@umich.edu // Adjust path for current working directory 10883669Sbinkertn@umich.edu path = process->fullPath(path); 10893669Sbinkertn@umich.edu 1090360SN/A struct stat hostBuf; 1091360SN/A int result = lstat(path.c_str(), &hostBuf); 1092360SN/A 1093360SN/A if (result < 0) 10941458SN/A return -errno; 1095360SN/A 10968706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1097360SN/A 10981458SN/A return 0; 1099360SN/A} 1100360SN/A 11011999SN/A/// Target lstat64() handler. 11021999SN/Atemplate <class OS> 11031999SN/ASyscallReturn 11043114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 11052680Sktlim@umich.edu ThreadContext *tc) 11061999SN/A{ 11071999SN/A std::string path; 11081999SN/A 11096701Sgblack@eecs.umich.edu int index = 0; 11108852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11116701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11126701Sgblack@eecs.umich.edu return -EFAULT; 11136701Sgblack@eecs.umich.edu } 11146701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11151999SN/A 11163669Sbinkertn@umich.edu // Adjust path for current working directory 11173669Sbinkertn@umich.edu path = process->fullPath(path); 11183669Sbinkertn@umich.edu 11192764Sstever@eecs.umich.edu#if NO_STAT64 11202064SN/A struct stat hostBuf; 11212064SN/A int result = lstat(path.c_str(), &hostBuf); 11222064SN/A#else 11231999SN/A struct stat64 hostBuf; 11241999SN/A int result = lstat64(path.c_str(), &hostBuf); 11252064SN/A#endif 11261999SN/A 11271999SN/A if (result < 0) 11281999SN/A return -errno; 11291999SN/A 11308706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11311999SN/A 11321999SN/A return 0; 11331999SN/A} 11341999SN/A 1135378SN/A/// Target fstat() handler. 1136360SN/Atemplate <class OS> 11371450SN/ASyscallReturn 11383114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11392680Sktlim@umich.edu ThreadContext *tc) 1140360SN/A{ 11416701Sgblack@eecs.umich.edu int index = 0; 114210931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11436701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1144360SN/A 114511380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1146360SN/A 114710932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 114810931Sbrandon.potter@amd.com if (sim_fd < 0) 11491458SN/A return -EBADF; 1150360SN/A 1151360SN/A struct stat hostBuf; 115210931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1153360SN/A 1154360SN/A if (result < 0) 11551458SN/A return -errno; 1156360SN/A 115710931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11582021SN/A 11591458SN/A return 0; 1160360SN/A} 1161360SN/A 1162360SN/A 11631706SN/A/// Target statfs() handler. 11641706SN/Atemplate <class OS> 11651706SN/ASyscallReturn 11663114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11672680Sktlim@umich.edu ThreadContext *tc) 11681706SN/A{ 11691706SN/A std::string path; 11701706SN/A 11716701Sgblack@eecs.umich.edu int index = 0; 11728852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11736701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11746701Sgblack@eecs.umich.edu return -EFAULT; 11756701Sgblack@eecs.umich.edu } 11766701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11771706SN/A 11783669Sbinkertn@umich.edu // Adjust path for current working directory 11793669Sbinkertn@umich.edu path = process->fullPath(path); 11803669Sbinkertn@umich.edu 11811706SN/A struct statfs hostBuf; 11821706SN/A int result = statfs(path.c_str(), &hostBuf); 11831706SN/A 11841706SN/A if (result < 0) 11852218SN/A return -errno; 11861706SN/A 118711759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11881706SN/A 11891706SN/A return 0; 11901706SN/A} 11911706SN/A 11921706SN/A 11931706SN/A/// Target fstatfs() handler. 11941706SN/Atemplate <class OS> 11951706SN/ASyscallReturn 11963114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11972680Sktlim@umich.edu ThreadContext *tc) 11981706SN/A{ 11996701Sgblack@eecs.umich.edu int index = 0; 120010931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 12016701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 12021706SN/A 120310932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 120410931Sbrandon.potter@amd.com if (sim_fd < 0) 12051706SN/A return -EBADF; 12061706SN/A 12071706SN/A struct statfs hostBuf; 120810931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 12091706SN/A 12101706SN/A if (result < 0) 12112218SN/A return -errno; 12121706SN/A 121311759Sbrandon.potter@amd.com copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 12141706SN/A 12151706SN/A return 0; 12161706SN/A} 12171706SN/A 12181706SN/A 12191999SN/A/// Target writev() handler. 12201999SN/Atemplate <class OS> 12211999SN/ASyscallReturn 12223114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12232680Sktlim@umich.edu ThreadContext *tc) 12241999SN/A{ 12256701Sgblack@eecs.umich.edu int index = 0; 122610931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 122710931Sbrandon.potter@amd.com 122810932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 122910931Sbrandon.potter@amd.com if (sim_fd < 0) 12301999SN/A return -EBADF; 12311999SN/A 12328852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 12336701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 12346701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 12351999SN/A struct iovec hiov[count]; 12366227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 12371999SN/A typename OS::tgt_iovec tiov; 12382461SN/A 12398852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12408852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12418737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12421999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 12438852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12448852Sandreas.hansson@arm.com hiov[i].iov_len); 12451999SN/A } 12461999SN/A 124710931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 12481999SN/A 12496227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12501999SN/A delete [] (char *)hiov[i].iov_base; 12511999SN/A 12521999SN/A if (result < 0) 12532218SN/A return -errno; 12541999SN/A 125510629Sjthestness@gmail.com return result; 12561999SN/A} 12571999SN/A 125811385Sbrandon.potter@amd.com/// Real mmap handler. 1259360SN/Atemplate <class OS> 12601450SN/ASyscallReturn 126111385Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 126211385Sbrandon.potter@amd.com bool is_mmap2) 1263360SN/A{ 12646701Sgblack@eecs.umich.edu int index = 0; 12656701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12666701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 126711383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 126811383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12698324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 127010486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1271360SN/A 127211385Sbrandon.potter@amd.com if (is_mmap2) 127311385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12749008Sgblack@eecs.umich.edu 127511383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 127611383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 127711383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 127811383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 127911383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 128011383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 128111383Sbrandon.potter@amd.com !length) { 128211383Sbrandon.potter@amd.com return -EINVAL; 128311383Sbrandon.potter@amd.com } 12848324Ssteve.reinhardt@amd.com 128511383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 128611383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 128711383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 128811383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 128911383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 129011383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 129111383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 129211383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 129311383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 129411383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 129511383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 129611383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 129711383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 129811383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 129911383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 130011383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 130111383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 130211383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 130311383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 130411383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 130511383Sbrandon.potter@amd.com // than we currently maintain. 130611383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 130711383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 130811383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 13098324Ssteve.reinhardt@amd.com } 13105877Shsul@eecs.umich.edu 131110486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 131210486Stjablin@gmail.com 131311383Sbrandon.potter@amd.com int sim_fd = -1; 131411383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 131511383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 131611624Smichael.lebeane@amd.com // Check for EmulatedDriver mmap 131711624Smichael.lebeane@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 131811624Smichael.lebeane@amd.com if (fde == NULL) 131911624Smichael.lebeane@amd.com return -EBADF; 132011624Smichael.lebeane@amd.com 132111624Smichael.lebeane@amd.com if (fde->driver != NULL) { 132211624Smichael.lebeane@amd.com return fde->driver->mmap(p, tc, start, length, prot, 132311624Smichael.lebeane@amd.com tgt_flags, tgt_fd, offset); 132411624Smichael.lebeane@amd.com } 132511624Smichael.lebeane@amd.com sim_fd = fde->fd; 132611624Smichael.lebeane@amd.com 132711383Sbrandon.potter@amd.com if (sim_fd < 0) 132811383Sbrandon.potter@amd.com return -EBADF; 1329360SN/A 133011383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 133111383Sbrandon.potter@amd.com sim_fd, offset); 13328600Ssteve.reinhardt@amd.com 133311383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 133411383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 133511383Sbrandon.potter@amd.com return -errno; 13368600Ssteve.reinhardt@amd.com } 13372544SN/A } 13382544SN/A 133911383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 134011383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 134111383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 134211386Ssteve.reinhardt@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 134311386Ssteve.reinhardt@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 134411383Sbrandon.potter@amd.com } 134511383Sbrandon.potter@amd.com 134611383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 134711383Sbrandon.potter@amd.com start, start + length - 1); 134811383Sbrandon.potter@amd.com 134911383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 135011383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 135111383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 135211383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 135311383Sbrandon.potter@amd.com if (clobber) { 135411383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 135511383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 135611383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 135711383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 135811383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13598600Ssteve.reinhardt@amd.com } 13606672Sgblack@eecs.umich.edu } 13618600Ssteve.reinhardt@amd.com 136211383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 136311383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 136411383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 13658601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 13662544SN/A 136711383Sbrandon.potter@amd.com // Transfer content into target address space. 136811383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 136911383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 137011383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 137111383Sbrandon.potter@amd.com // with something like: 137211383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 137311383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 137411383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 137511383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 137611383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 137711383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 137811383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 137911383Sbrandon.potter@amd.com } else { 138011383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 138111383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 138211383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 138311383Sbrandon.potter@amd.com // the host into the target address space. 138411383Sbrandon.potter@amd.com struct stat file_stat; 138511383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 138611383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 138711383Sbrandon.potter@amd.com 138811383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 138911383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 139011383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 139111383Sbrandon.potter@amd.com // on the specified offset into the file. 139211383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 139311383Sbrandon.potter@amd.com length); 139411383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 139511383Sbrandon.potter@amd.com 139611383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 139711383Sbrandon.potter@amd.com munmap(pmap, length); 139811383Sbrandon.potter@amd.com 139911392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 140011392Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 140111392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 140211392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 140311392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 140411392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 140511392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 140611392Sbrandon.potter@amd.com if (interpreter) { 140711392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 140811392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 140911392Sbrandon.potter@amd.com 141011392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 141111392Sbrandon.potter@amd.com 141211392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 141311392Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 141411392Sbrandon.potter@amd.com 141511392Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(fde->filename); 141611392Sbrandon.potter@amd.com 141711392Sbrandon.potter@amd.com if (lib) { 141811392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 141911392Sbrandon.potter@amd.com lib->textBase(), start); 142011392Sbrandon.potter@amd.com } 142111392Sbrandon.potter@amd.com } 142211392Sbrandon.potter@amd.com } 142311392Sbrandon.potter@amd.com 142411383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 142511383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 142611383Sbrandon.potter@amd.com // execution (hopefully). 142711383Sbrandon.potter@amd.com } 142811383Sbrandon.potter@amd.com 14291458SN/A return start; 1430360SN/A} 1431360SN/A 143211593Santhony.gutierrez@amd.comtemplate <class OS> 143311593Santhony.gutierrez@amd.comSyscallReturn 143411593Santhony.gutierrez@amd.compwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 143511593Santhony.gutierrez@amd.com{ 143611593Santhony.gutierrez@amd.com int index = 0; 143711593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 143811593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 143911593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 144011593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 144111593Santhony.gutierrez@amd.com 144211593Santhony.gutierrez@amd.com int sim_fd = p->getSimFD(tgt_fd); 144311593Santhony.gutierrez@amd.com if (sim_fd < 0) 144411593Santhony.gutierrez@amd.com return -EBADF; 144511593Santhony.gutierrez@amd.com 144611593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 144711593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 144811593Santhony.gutierrez@amd.com 144911594Santhony.gutierrez@amd.com int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset); 145011593Santhony.gutierrez@amd.com 145111593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 145211593Santhony.gutierrez@amd.com} 145311593Santhony.gutierrez@amd.com 145411385Sbrandon.potter@amd.com/// Target mmap() handler. 145511385Sbrandon.potter@amd.comtemplate <class OS> 145611385Sbrandon.potter@amd.comSyscallReturn 145711385Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 145811385Sbrandon.potter@amd.com{ 145911385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 146011385Sbrandon.potter@amd.com} 146111385Sbrandon.potter@amd.com 146211385Sbrandon.potter@amd.com/// Target mmap2() handler. 146311385Sbrandon.potter@amd.comtemplate <class OS> 146411385Sbrandon.potter@amd.comSyscallReturn 146511385Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 146611385Sbrandon.potter@amd.com{ 146711385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 146811385Sbrandon.potter@amd.com} 146911385Sbrandon.potter@amd.com 1470378SN/A/// Target getrlimit() handler. 1471360SN/Atemplate <class OS> 14721450SN/ASyscallReturn 14733114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14742680Sktlim@umich.edu ThreadContext *tc) 1475360SN/A{ 14766701Sgblack@eecs.umich.edu int index = 0; 14776701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 14786701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1479360SN/A 1480360SN/A switch (resource) { 14812064SN/A case OS::TGT_RLIMIT_STACK: 14825877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14832064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14848737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14858737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14862064SN/A break; 1487360SN/A 14885877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 14895877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 14905877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14918737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14928737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14935877Shsul@eecs.umich.edu break; 14945877Shsul@eecs.umich.edu 14952064SN/A default: 149610794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 149710794Sbrandon.potter@amd.com return -EINVAL; 14982064SN/A break; 1499360SN/A } 1500360SN/A 15018706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 15021458SN/A return 0; 1503360SN/A} 1504360SN/A 150510796Sbrandon.potter@amd.com/// Target clock_gettime() function. 150610796Sbrandon.potter@amd.comtemplate <class OS> 150710796Sbrandon.potter@amd.comSyscallReturn 150810796Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 150910796Sbrandon.potter@amd.com{ 151010796Sbrandon.potter@amd.com int index = 1; 151110796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 151210796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 151310796Sbrandon.potter@amd.com 151410796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 151510796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 151610796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 151710796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 151810796Sbrandon.potter@amd.com 151910796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 152010796Sbrandon.potter@amd.com 152110796Sbrandon.potter@amd.com return 0; 152210796Sbrandon.potter@amd.com} 152310796Sbrandon.potter@amd.com 152411337SMichael.Lebeane@amd.com/// Target clock_getres() function. 152511337SMichael.Lebeane@amd.comtemplate <class OS> 152611337SMichael.Lebeane@amd.comSyscallReturn 152711337SMichael.Lebeane@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 152811337SMichael.Lebeane@amd.com{ 152911337SMichael.Lebeane@amd.com int index = 1; 153011337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 153111337SMichael.Lebeane@amd.com 153211337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 153311337SMichael.Lebeane@amd.com tp->tv_sec = 0; 153411337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 153511337SMichael.Lebeane@amd.com 153611337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 153711337SMichael.Lebeane@amd.com 153811337SMichael.Lebeane@amd.com return 0; 153911337SMichael.Lebeane@amd.com} 154011337SMichael.Lebeane@amd.com 1541378SN/A/// Target gettimeofday() handler. 1542360SN/Atemplate <class OS> 15431450SN/ASyscallReturn 15443114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15452680Sktlim@umich.edu ThreadContext *tc) 1546360SN/A{ 15476701Sgblack@eecs.umich.edu int index = 0; 15486701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1549360SN/A 155010796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1551360SN/A tp->tv_sec += seconds_since_epoch; 15526109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 15536109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1554360SN/A 15558706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1556360SN/A 15571458SN/A return 0; 1558360SN/A} 1559360SN/A 1560360SN/A 15611999SN/A/// Target utimes() handler. 15621999SN/Atemplate <class OS> 15631999SN/ASyscallReturn 15643114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15652680Sktlim@umich.edu ThreadContext *tc) 15661999SN/A{ 15671999SN/A std::string path; 15681999SN/A 15696701Sgblack@eecs.umich.edu int index = 0; 15708852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 15716701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 15726701Sgblack@eecs.umich.edu return -EFAULT; 15736701Sgblack@eecs.umich.edu } 15741999SN/A 15756701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 15766701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 15778706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 15781999SN/A 15791999SN/A struct timeval hostTimeval[2]; 15801999SN/A for (int i = 0; i < 2; ++i) 15811999SN/A { 15828737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15838737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15841999SN/A } 15853669Sbinkertn@umich.edu 15863669Sbinkertn@umich.edu // Adjust path for current working directory 15873669Sbinkertn@umich.edu path = process->fullPath(path); 15883669Sbinkertn@umich.edu 15891999SN/A int result = utimes(path.c_str(), hostTimeval); 15901999SN/A 15911999SN/A if (result < 0) 15921999SN/A return -errno; 15931999SN/A 15941999SN/A return 0; 15951999SN/A} 1596378SN/A/// Target getrusage() function. 1597360SN/Atemplate <class OS> 15981450SN/ASyscallReturn 15993114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16002680Sktlim@umich.edu ThreadContext *tc) 1601360SN/A{ 16026701Sgblack@eecs.umich.edu int index = 0; 16036701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 16046701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1605360SN/A 16063670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 16073670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1608360SN/A rup->ru_stime.tv_sec = 0; 1609360SN/A rup->ru_stime.tv_usec = 0; 1610360SN/A rup->ru_maxrss = 0; 1611360SN/A rup->ru_ixrss = 0; 1612360SN/A rup->ru_idrss = 0; 1613360SN/A rup->ru_isrss = 0; 1614360SN/A rup->ru_minflt = 0; 1615360SN/A rup->ru_majflt = 0; 1616360SN/A rup->ru_nswap = 0; 1617360SN/A rup->ru_inblock = 0; 1618360SN/A rup->ru_oublock = 0; 1619360SN/A rup->ru_msgsnd = 0; 1620360SN/A rup->ru_msgrcv = 0; 1621360SN/A rup->ru_nsignals = 0; 1622360SN/A rup->ru_nvcsw = 0; 1623360SN/A rup->ru_nivcsw = 0; 1624360SN/A 16253670Sbinkertn@umich.edu switch (who) { 16263670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 162710796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 16288737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 16298737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 16303670Sbinkertn@umich.edu break; 16313670Sbinkertn@umich.edu 16323670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 16333670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 16343670Sbinkertn@umich.edu break; 16353670Sbinkertn@umich.edu 16363670Sbinkertn@umich.edu default: 16373670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 16383670Sbinkertn@umich.edu // plow ahead 16393670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 16403670Sbinkertn@umich.edu who); 16413670Sbinkertn@umich.edu } 16423670Sbinkertn@umich.edu 16438706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1644360SN/A 16451458SN/A return 0; 1646360SN/A} 1647360SN/A 16486683Stjones1@inf.ed.ac.uk/// Target times() function. 16496683Stjones1@inf.ed.ac.uktemplate <class OS> 16506683Stjones1@inf.ed.ac.ukSyscallReturn 16516683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16526683Stjones1@inf.ed.ac.uk ThreadContext *tc) 16536683Stjones1@inf.ed.ac.uk{ 16546701Sgblack@eecs.umich.edu int index = 0; 16556701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 16566683Stjones1@inf.ed.ac.uk 16576683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 16587823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16596683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 16606683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 16616683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 16626683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 16636683Stjones1@inf.ed.ac.uk 16646683Stjones1@inf.ed.ac.uk // Convert to host endianness 16658737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 16666683Stjones1@inf.ed.ac.uk 16676683Stjones1@inf.ed.ac.uk // Write back 16688706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 16696683Stjones1@inf.ed.ac.uk 16706683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 16716683Stjones1@inf.ed.ac.uk return clocks; 16726683Stjones1@inf.ed.ac.uk} 16732553SN/A 16746684Stjones1@inf.ed.ac.uk/// Target time() function. 16756684Stjones1@inf.ed.ac.uktemplate <class OS> 16766684Stjones1@inf.ed.ac.ukSyscallReturn 16776684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16786684Stjones1@inf.ed.ac.uk ThreadContext *tc) 16796684Stjones1@inf.ed.ac.uk{ 16806684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 168110796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 16826684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 16836684Stjones1@inf.ed.ac.uk 16846701Sgblack@eecs.umich.edu int index = 0; 16856701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 168611321Ssteve.reinhardt@amd.com if (taddr != 0) { 16876684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 16888737Skoansin.tan@gmail.com t = TheISA::htog(t); 16898852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 16908852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16916684Stjones1@inf.ed.ac.uk } 16926684Stjones1@inf.ed.ac.uk return sec; 16936684Stjones1@inf.ed.ac.uk} 16942553SN/A 16952553SN/A 16961354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1697