syscall_emul.hh revision 10496
1360SN/A/* 210027SChris.Adeniyi-Jones@arm.com * Copyright (c) 2012-2013 ARM Limited 310027SChris.Adeniyi-Jones@arm.com * All rights reserved 410027SChris.Adeniyi-Jones@arm.com * 510027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 610027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 710027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 810027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 910027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1010027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1110027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1210027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1310027SChris.Adeniyi-Jones@arm.com * 141458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 15360SN/A * All rights reserved. 16360SN/A * 17360SN/A * Redistribution and use in source and binary forms, with or without 18360SN/A * modification, are permitted provided that the following conditions are 19360SN/A * met: redistributions of source code must retain the above copyright 20360SN/A * notice, this list of conditions and the following disclaimer; 21360SN/A * redistributions in binary form must reproduce the above copyright 22360SN/A * notice, this list of conditions and the following disclaimer in the 23360SN/A * documentation and/or other materials provided with the distribution; 24360SN/A * neither the name of the copyright holders nor the names of its 25360SN/A * contributors may be used to endorse or promote products derived from 26360SN/A * this software without specific prior written permission. 27360SN/A * 28360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392665Ssaidi@eecs.umich.edu * 402665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 412665Ssaidi@eecs.umich.edu * Kevin Lim 42360SN/A */ 43360SN/A 441354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 451354SN/A#define __SIM_SYSCALL_EMUL_HH__ 46360SN/A 472764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 489202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 499202Spalle@lyckegaard.dk defined(__NetBSD__)) 502064SN/A 51360SN/A/// 52360SN/A/// @file syscall_emul.hh 53360SN/A/// 54360SN/A/// This file defines objects used to emulate syscalls from the target 55360SN/A/// application on the host machine. 56360SN/A 571809SN/A#ifdef __CYGWIN32__ 585543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 591809SN/A#endif 603113Sgblack@eecs.umich.edu#include <sys/stat.h> 618229Snate@binkert.org#include <sys/time.h> 628229Snate@binkert.org#include <sys/uio.h> 633113Sgblack@eecs.umich.edu#include <fcntl.h> 647075Snate@binkert.org 658229Snate@binkert.org#include <cerrno> 667075Snate@binkert.org#include <string> 67360SN/A 682474SN/A#include "base/chunk_generator.hh" 695543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 702462SN/A#include "base/misc.hh" 711354SN/A#include "base/trace.hh" 726216Snate@binkert.org#include "base/types.hh" 736658Snate@binkert.org#include "config/the_isa.hh" 742474SN/A#include "cpu/base.hh" 752680Sktlim@umich.edu#include "cpu/thread_context.hh" 768232Snate@binkert.org#include "debug/SyscallVerbose.hh" 778229Snate@binkert.org#include "mem/page_table.hh" 788706Sandreas.hansson@arm.com#include "mem/se_translating_port_proxy.hh" 797678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 8010496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 818229Snate@binkert.org#include "sim/process.hh" 828766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 836640Svince@csl.cornell.edu#include "sim/system.hh" 84360SN/A 85360SN/A/// 86360SN/A/// System call descriptor. 87360SN/A/// 88360SN/Aclass SyscallDesc { 89360SN/A 90360SN/A public: 91360SN/A 92378SN/A /// Typedef for target syscall handler functions. 931450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 943114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 95360SN/A 965543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 975543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 985543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 99360SN/A 100360SN/A /// Flag values for controlling syscall behavior. 101360SN/A enum Flags { 102360SN/A /// Don't set return regs according to funcPtr return value. 103360SN/A /// Used for syscalls with non-standard return conventions 1042680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 105360SN/A /// sigreturn). 106360SN/A SuppressReturnValue = 1 107360SN/A }; 108360SN/A 109360SN/A /// Constructor. 110360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 111360SN/A : name(_name), funcPtr(_funcPtr), flags(_flags) 112360SN/A { 113360SN/A } 114360SN/A 115360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1163114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 117360SN/A}; 118360SN/A 119360SN/A 120360SN/Aclass BaseBufferArg { 121360SN/A 122360SN/A public: 123360SN/A 124360SN/A BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size) 125360SN/A { 126360SN/A bufPtr = new uint8_t[size]; 127360SN/A // clear out buffer: in case we only partially populate this, 128360SN/A // and then do a copyOut(), we want to make sure we don't 129360SN/A // introduce any random junk into the simulated address space 130360SN/A memset(bufPtr, 0, size); 131360SN/A } 132360SN/A 133360SN/A virtual ~BaseBufferArg() { delete [] bufPtr; } 134360SN/A 135360SN/A // 136360SN/A // copy data into simulator space (read from target memory) 137360SN/A // 1388852Sandreas.hansson@arm.com virtual bool copyIn(SETranslatingPortProxy &memproxy) 139360SN/A { 1408852Sandreas.hansson@arm.com memproxy.readBlob(addr, bufPtr, size); 1415543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 142360SN/A } 143360SN/A 144360SN/A // 145360SN/A // copy data out of simulator space (write to target memory) 146360SN/A // 1478852Sandreas.hansson@arm.com virtual bool copyOut(SETranslatingPortProxy &memproxy) 148360SN/A { 1498852Sandreas.hansson@arm.com memproxy.writeBlob(addr, bufPtr, size); 1505543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 151360SN/A } 152360SN/A 153360SN/A protected: 154360SN/A Addr addr; 155360SN/A int size; 156360SN/A uint8_t *bufPtr; 157360SN/A}; 158360SN/A 159360SN/A 160360SN/Aclass BufferArg : public BaseBufferArg 161360SN/A{ 162360SN/A public: 163360SN/A BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { } 1645543Ssaidi@eecs.umich.edu void *bufferPtr() { return bufPtr; } 165360SN/A}; 166360SN/A 167360SN/Atemplate <class T> 168360SN/Aclass TypedBufferArg : public BaseBufferArg 169360SN/A{ 170360SN/A public: 171360SN/A // user can optionally specify a specific number of bytes to 172360SN/A // allocate to deal with those structs that have variable-size 173360SN/A // arrays at the end 174360SN/A TypedBufferArg(Addr _addr, int _size = sizeof(T)) 175360SN/A : BaseBufferArg(_addr, _size) 176360SN/A { } 177360SN/A 178360SN/A // type case 179360SN/A operator T*() { return (T *)bufPtr; } 180360SN/A 181360SN/A // dereference operators 1825543Ssaidi@eecs.umich.edu T &operator*() { return *((T *)bufPtr); } 1835543Ssaidi@eecs.umich.edu T* operator->() { return (T *)bufPtr; } 184502SN/A T &operator[](int i) { return ((T *)bufPtr)[i]; } 185360SN/A}; 186360SN/A 187360SN/A////////////////////////////////////////////////////////////////////// 188360SN/A// 189360SN/A// The following emulation functions are generic enough that they 190360SN/A// don't need to be recompiled for different emulated OS's. They are 191360SN/A// defined in sim/syscall_emul.cc. 192360SN/A// 193360SN/A////////////////////////////////////////////////////////////////////// 194360SN/A 195360SN/A 196378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1971706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1983114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 199378SN/A 200378SN/A/// Handler for unimplemented syscalls that we never intend to 201378SN/A/// implement (signal handling, etc.) and should not affect the correct 202378SN/A/// behavior of the program. Print a warning only if the appropriate 203378SN/A/// trace flag is enabled. Return success to the target program. 2041706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 2053114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2068149SChris.Emmons@ARM.comSyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num, 2078149SChris.Emmons@ARM.com LiveProcess *p, ThreadContext *tc); 208360SN/A 2096109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 2101706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 2113114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 212378SN/A 2136109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 2146109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 2156109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2166109Ssanchezd@stanford.edu 217378SN/A/// Target getpagesize() handler. 2181706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 2193114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 220378SN/A 2215748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 2225748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 2235748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 224378SN/A 225378SN/A/// Target close() handler. 2261706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 2273114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 228378SN/A 229378SN/A/// Target read() handler. 2301706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 2313114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 232378SN/A 233378SN/A/// Target write() handler. 2341706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 2353114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 236378SN/A 237378SN/A/// Target lseek() handler. 2381706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 2393114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 240378SN/A 2414118Sgblack@eecs.umich.edu/// Target _llseek() handler. 2424118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 2434118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2444118Sgblack@eecs.umich.edu 245378SN/A/// Target munmap() handler. 2461706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2473114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 248378SN/A 249378SN/A/// Target gethostname() handler. 2501706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2513114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 252360SN/A 2535513SMichael.Adler@intel.com/// Target getcwd() handler. 2545513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2555513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2565513SMichael.Adler@intel.com 25710203SAli.Saidi@ARM.com/// Target readlink() handler. 25810203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 25910203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 26010203SAli.Saidi@ARM.com int index = 0); 2615513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2625513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2635513SMichael.Adler@intel.com 264511SN/A/// Target unlink() handler. 2651706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2663114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 267511SN/A 2685513SMichael.Adler@intel.com/// Target mkdir() handler. 2695513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2705513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2715513SMichael.Adler@intel.com 272511SN/A/// Target rename() handler. 2731706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2743114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2751706SN/A 2761706SN/A 2771706SN/A/// Target truncate() handler. 2781706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2793114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2801706SN/A 2811706SN/A 2821706SN/A/// Target ftruncate() handler. 2831706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2851706SN/A 286511SN/A 2876703Svince@csl.cornell.edu/// Target truncate64() handler. 2886703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2896703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2906703Svince@csl.cornell.edu 2916685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2926685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2936685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2946685Stjones1@inf.ed.ac.uk 2956685Stjones1@inf.ed.ac.uk 2965513SMichael.Adler@intel.com/// Target umask() handler. 2975513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2985513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2995513SMichael.Adler@intel.com 3005513SMichael.Adler@intel.com 3011999SN/A/// Target chown() handler. 3021999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 3033114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3041999SN/A 3051999SN/A 3061999SN/A/// Target fchown() handler. 3071999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 3083114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3091999SN/A 3103079Sstever@eecs.umich.edu/// Target dup() handler. 3113079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 3123114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3133079Sstever@eecs.umich.edu 3142093SN/A/// Target fnctl() handler. 3152093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 3163114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3172093SN/A 3182687Sksewell@umich.edu/// Target fcntl64() handler. 3192687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 3203114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3212687Sksewell@umich.edu 3222238SN/A/// Target setuid() handler. 3232238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 3243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3252238SN/A 3262238SN/A/// Target getpid() handler. 3272238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 3283114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3292238SN/A 3302238SN/A/// Target getuid() handler. 3312238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 3323114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3332238SN/A 3342238SN/A/// Target getgid() handler. 3352238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 3363114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3372238SN/A 3382238SN/A/// Target getppid() handler. 3392238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 3403114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3412238SN/A 3422238SN/A/// Target geteuid() handler. 3432238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3452238SN/A 3462238SN/A/// Target getegid() handler. 3472238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3483114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3492238SN/A 3506109Ssanchezd@stanford.edu/// Target clone() handler. 3516109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3526109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3532238SN/A 3549455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3559455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3569455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 35710203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 35810203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 35910203SAli.Saidi@ARM.com int index); 3609455Smitch.hayenga+gem5@gmail.com 3619112Smarc.orr@gmail.com/// Futex system call 3629112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3639112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3649112Smarc.orr@gmail.comtemplate <class OS> 3659112Smarc.orr@gmail.comSyscallReturn 3669112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3679112Smarc.orr@gmail.com ThreadContext *tc) 3689112Smarc.orr@gmail.com{ 3699112Smarc.orr@gmail.com int index_uaddr = 0; 3709112Smarc.orr@gmail.com int index_op = 1; 3719112Smarc.orr@gmail.com int index_val = 2; 3729112Smarc.orr@gmail.com int index_timeout = 3; 3739112Smarc.orr@gmail.com 3749112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3759112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3769112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3779112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3789112Smarc.orr@gmail.com 3799112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3809112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3819112Smarc.orr@gmail.com 3829112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3839112Smarc.orr@gmail.com uaddr, op, val); 3849112Smarc.orr@gmail.com 3859238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3869112Smarc.orr@gmail.com 3879112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3889112Smarc.orr@gmail.com if (timeout != 0) { 3899112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3909112Smarc.orr@gmail.com "we'll wait indefinitely"); 3919112Smarc.orr@gmail.com } 3929112Smarc.orr@gmail.com 3939112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3949112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3959112Smarc.orr@gmail.com int mem_val = *((int *)buf); 3969112Smarc.orr@gmail.com delete buf; 3979112Smarc.orr@gmail.com 3989112Smarc.orr@gmail.com if(val != mem_val) { 3999112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 4009112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 4019112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 4029112Smarc.orr@gmail.com } 4039112Smarc.orr@gmail.com 4049112Smarc.orr@gmail.com // Queue the thread context 4059112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 4069112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 4079112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 4089112Smarc.orr@gmail.com } else { 4099112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 4109112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 4119112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 4129112Smarc.orr@gmail.com } 4139112Smarc.orr@gmail.com tcWaitList->push_back(tc); 4149112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 4159112Smarc.orr@gmail.com "thread context\n"); 4169112Smarc.orr@gmail.com tc->suspend(); 4179112Smarc.orr@gmail.com return 0; 4189112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 4199112Smarc.orr@gmail.com int wokenUp = 0; 4209112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 4219112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 4229112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 4239112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 4249112Smarc.orr@gmail.com tcWaitList->front()->activate(); 4259112Smarc.orr@gmail.com tcWaitList->pop_front(); 4269112Smarc.orr@gmail.com wokenUp++; 4279112Smarc.orr@gmail.com } 4289112Smarc.orr@gmail.com if(tcWaitList->empty()) { 4299112Smarc.orr@gmail.com futex_map.erase(uaddr); 4309112Smarc.orr@gmail.com delete tcWaitList; 4319112Smarc.orr@gmail.com } 4329112Smarc.orr@gmail.com } 4339112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 4349112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 4359112Smarc.orr@gmail.com return wokenUp; 4369112Smarc.orr@gmail.com } else { 4379238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 4389112Smarc.orr@gmail.com return 0; 4399112Smarc.orr@gmail.com } 4409112Smarc.orr@gmail.com 4419112Smarc.orr@gmail.com} 4429112Smarc.orr@gmail.com 4432238SN/A 4442238SN/A/// Pseudo Funcs - These functions use a different return convension, 4452238SN/A/// returning a second value in a register other than the normal return register 4462238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 4473114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4482238SN/A 4492238SN/A/// Target getpidPseudo() handler. 4502238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4513114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4522238SN/A 4532238SN/A/// Target getuidPseudo() handler. 4542238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 4553114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4562238SN/A 4572238SN/A/// Target getgidPseudo() handler. 4582238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4593114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4602238SN/A 4612238SN/A 4621354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4631354SN/Aconst int one_million = 1000000; 4641354SN/A 4651354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4661354SN/A/// by my reckoning. We want to keep this a constant (not use the 4671354SN/A/// real-world time) to keep simulations repeatable. 4681354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4691354SN/A 4701354SN/A/// Helper function to convert current elapsed time to seconds and 4711354SN/A/// microseconds. 4721354SN/Atemplate <class T1, class T2> 4731354SN/Avoid 4741354SN/AgetElapsedTime(T1 &sec, T2 &usec) 4751354SN/A{ 4767823Ssteve.reinhardt@amd.com int elapsed_usecs = curTick() / SimClock::Int::us; 4771354SN/A sec = elapsed_usecs / one_million; 4781354SN/A usec = elapsed_usecs % one_million; 4791354SN/A} 4801354SN/A 481360SN/A////////////////////////////////////////////////////////////////////// 482360SN/A// 483360SN/A// The following emulation functions are generic, but need to be 484360SN/A// templated to account for differences in types, constants, etc. 485360SN/A// 486360SN/A////////////////////////////////////////////////////////////////////// 487360SN/A 4883113Sgblack@eecs.umich.edu#if NO_STAT64 4893113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4903113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4913113Sgblack@eecs.umich.edu#else 4923113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4933113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4943113Sgblack@eecs.umich.edu#endif 4953113Sgblack@eecs.umich.edu 4963113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4973113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4983113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4993113Sgblack@eecs.umich.edu 5003113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 5013113Sgblack@eecs.umich.edustatic void 5023113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 5033113Sgblack@eecs.umich.edu{ 5044189Sgblack@eecs.umich.edu using namespace TheISA; 5054189Sgblack@eecs.umich.edu 5063113Sgblack@eecs.umich.edu if (fakeTTY) 5073113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 5083113Sgblack@eecs.umich.edu else 5093113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 5108737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 5113113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 5128737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 5133277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 5145515SMichael.Adler@intel.com if (fakeTTY) { 5155515SMichael.Adler@intel.com // Claim to be a character device 5165515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 5175515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 5185515SMichael.Adler@intel.com } 5198737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 5203277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 5218737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 5223277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 5238737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 5243277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 5258737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 5263113Sgblack@eecs.umich.edu if (fakeTTY) 5273113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 5283113Sgblack@eecs.umich.edu else 5293113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 5308737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 5313113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 5328737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 5333114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5348737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5353114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5368737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5373114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5388737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5394061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5404061Sgblack@eecs.umich.edu // consistently across different hosts. 5414061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5428737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5433113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5448737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5453113Sgblack@eecs.umich.edu} 5463113Sgblack@eecs.umich.edu 5473113Sgblack@eecs.umich.edu// Same for stat64 5483113Sgblack@eecs.umich.edu 5493113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5503113Sgblack@eecs.umich.edustatic void 5513113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5523113Sgblack@eecs.umich.edu{ 5534189Sgblack@eecs.umich.edu using namespace TheISA; 5544189Sgblack@eecs.umich.edu 5553113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5563113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5573113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5588737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5593113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5608737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5613113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5628737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5633113Sgblack@eecs.umich.edu#else 5643113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5653113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5663113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5673113Sgblack@eecs.umich.edu#endif 5683113Sgblack@eecs.umich.edu} 5693113Sgblack@eecs.umich.edu 5703113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5713113Sgblack@eecs.umich.edutemplate<class OS> 5723113Sgblack@eecs.umich.edustatic void 5738852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5743113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5753113Sgblack@eecs.umich.edu{ 5763113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5773113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5783113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5793113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5803113Sgblack@eecs.umich.edu} 5813113Sgblack@eecs.umich.edu 5823113Sgblack@eecs.umich.edutemplate<class OS> 5833113Sgblack@eecs.umich.edustatic void 5848852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5853113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5863113Sgblack@eecs.umich.edu{ 5873113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5883113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5896686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5903113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5913113Sgblack@eecs.umich.edu} 5923113Sgblack@eecs.umich.edu 593378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 594378SN/A/// only to find out if their stdout is a tty, to determine whether to 5959141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5969141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 597360SN/Atemplate <class OS> 5981450SN/ASyscallReturn 5993114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6002680Sktlim@umich.edu ThreadContext *tc) 601360SN/A{ 6026701Sgblack@eecs.umich.edu int index = 0; 6036701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 6046701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 605360SN/A 6061969SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 607360SN/A 60810496Ssteve.reinhardt@amd.com Process::FdMap *fdObj = process->sim_fd_obj(fd); 60910496Ssteve.reinhardt@amd.com 61010496Ssteve.reinhardt@amd.com if (fdObj == NULL) { 611360SN/A // doesn't map to any simulator fd: not a valid target fd 6121458SN/A return -EBADF; 613360SN/A } 614360SN/A 61510496Ssteve.reinhardt@amd.com if (fdObj->driver != NULL) { 61610496Ssteve.reinhardt@amd.com return fdObj->driver->ioctl(process, tc, req); 61710496Ssteve.reinhardt@amd.com } 61810496Ssteve.reinhardt@amd.com 6199141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 6201458SN/A return -ENOTTY; 6219141Smarc.orr@gmail.com } 622360SN/A 6239141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 6249141Smarc.orr@gmail.com fd, req, tc->pcState()); 6259141Smarc.orr@gmail.com return -ENOTTY; 626360SN/A} 627360SN/A 628360SN/Atemplate <class OS> 62910027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 6303114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 63110027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 632360SN/A{ 633360SN/A std::string path; 634360SN/A 6358852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 6366701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6371458SN/A return -EFAULT; 638360SN/A 6396701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6406701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 641360SN/A int hostFlags = 0; 642360SN/A 643360SN/A // translate open flags 644360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 645360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 646360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 647360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 648360SN/A } 649360SN/A } 650360SN/A 651360SN/A // any target flags left? 652360SN/A if (tgtFlags != 0) 6531706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 654360SN/A 655360SN/A#ifdef __CYGWIN32__ 656360SN/A hostFlags |= O_BINARY; 657360SN/A#endif 658360SN/A 6593669Sbinkertn@umich.edu // Adjust path for current working directory 6603669Sbinkertn@umich.edu path = process->fullPath(path); 6613669Sbinkertn@umich.edu 6621706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6631706SN/A 66410496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 66510496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 66610496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 66710496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 66810496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 66910496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 67010496Ssteve.reinhardt@amd.com return -ENOENT; 67110496Ssteve.reinhardt@amd.com } 67210496Ssteve.reinhardt@amd.com 67310496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 67410496Ssteve.reinhardt@amd.com if (drv != NULL) { 67510496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 67610496Ssteve.reinhardt@amd.com // process if necessary. 67710496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 67810496Ssteve.reinhardt@amd.com } 67910496Ssteve.reinhardt@amd.com 68010496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 68110496Ssteve.reinhardt@amd.com // /dev/zero 68210496Ssteve.reinhardt@amd.com } 68310496Ssteve.reinhardt@amd.com 6845795Ssaidi@eecs.umich.edu int fd; 6859143Ssteve.reinhardt@amd.com int local_errno; 6869142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6879142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6889143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6895795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6909143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6915795Ssaidi@eecs.umich.edu } else { 6925795Ssaidi@eecs.umich.edu // open the file 6935795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6949143Ssteve.reinhardt@amd.com local_errno = errno; 6955795Ssaidi@eecs.umich.edu } 696360SN/A 6979143Ssteve.reinhardt@amd.com if (fd == -1) 6989143Ssteve.reinhardt@amd.com return -local_errno; 6999143Ssteve.reinhardt@amd.com 7009143Ssteve.reinhardt@amd.com return process->alloc_fd(fd, path.c_str(), hostFlags, mode, false); 701360SN/A} 702360SN/A 70310027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 70410027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 70510027SChris.Adeniyi-Jones@arm.comSyscallReturn 70610027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70710027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 70810027SChris.Adeniyi-Jones@arm.com{ 70910027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 71010027SChris.Adeniyi-Jones@arm.com} 71110027SChris.Adeniyi-Jones@arm.com 71210027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 71310027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 71410027SChris.Adeniyi-Jones@arm.comSyscallReturn 71510027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 71610027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 71710027SChris.Adeniyi-Jones@arm.com{ 71810027SChris.Adeniyi-Jones@arm.com int index = 0; 71910027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 72010027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 72110027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 72210027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 72310027SChris.Adeniyi-Jones@arm.com} 72410027SChris.Adeniyi-Jones@arm.com 72510203SAli.Saidi@ARM.com/// Target facessat() handler 72610203SAli.Saidi@ARM.comtemplate <class OS> 72710203SAli.Saidi@ARM.comSyscallReturn 72810203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 72910203SAli.Saidi@ARM.com ThreadContext *tc) 73010203SAli.Saidi@ARM.com{ 73110203SAli.Saidi@ARM.com int index = 0; 73210203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 73310203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 73410203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 73510203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 73610203SAli.Saidi@ARM.com} 73710203SAli.Saidi@ARM.com 73810203SAli.Saidi@ARM.com/// Target readlinkat() handler 73910203SAli.Saidi@ARM.comtemplate <class OS> 74010203SAli.Saidi@ARM.comSyscallReturn 74110203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 74210203SAli.Saidi@ARM.com ThreadContext *tc) 74310203SAli.Saidi@ARM.com{ 74410203SAli.Saidi@ARM.com int index = 0; 74510203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 74610203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 74710203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 74810203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 74910203SAli.Saidi@ARM.com} 75010203SAli.Saidi@ARM.com 7516640Svince@csl.cornell.edu/// Target sysinfo() handler. 7526640Svince@csl.cornell.edutemplate <class OS> 7536640Svince@csl.cornell.eduSyscallReturn 7546640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7556640Svince@csl.cornell.edu ThreadContext *tc) 7566640Svince@csl.cornell.edu{ 7576640Svince@csl.cornell.edu 7586701Sgblack@eecs.umich.edu int index = 0; 7596701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 7606701Sgblack@eecs.umich.edu sysinfo(process->getSyscallArg(tc, index)); 7616640Svince@csl.cornell.edu 7626701Sgblack@eecs.umich.edu sysinfo->uptime=seconds_since_epoch; 7636701Sgblack@eecs.umich.edu sysinfo->totalram=process->system->memSize(); 7646640Svince@csl.cornell.edu 7658706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7666640Svince@csl.cornell.edu 7676701Sgblack@eecs.umich.edu return 0; 7686640Svince@csl.cornell.edu} 769360SN/A 7701999SN/A/// Target chmod() handler. 7711999SN/Atemplate <class OS> 7721999SN/ASyscallReturn 7733114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7742680Sktlim@umich.edu ThreadContext *tc) 7751999SN/A{ 7761999SN/A std::string path; 7771999SN/A 7786701Sgblack@eecs.umich.edu int index = 0; 7798852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7806701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7811999SN/A return -EFAULT; 7826701Sgblack@eecs.umich.edu } 7831999SN/A 7846701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7851999SN/A mode_t hostMode = 0; 7861999SN/A 7871999SN/A // XXX translate mode flags via OS::something??? 7881999SN/A hostMode = mode; 7891999SN/A 7903669Sbinkertn@umich.edu // Adjust path for current working directory 7913669Sbinkertn@umich.edu path = process->fullPath(path); 7923669Sbinkertn@umich.edu 7931999SN/A // do the chmod 7941999SN/A int result = chmod(path.c_str(), hostMode); 7951999SN/A if (result < 0) 7962218SN/A return -errno; 7971999SN/A 7981999SN/A return 0; 7991999SN/A} 8001999SN/A 8011999SN/A 8021999SN/A/// Target fchmod() handler. 8031999SN/Atemplate <class OS> 8041999SN/ASyscallReturn 8053114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8062680Sktlim@umich.edu ThreadContext *tc) 8071999SN/A{ 8086701Sgblack@eecs.umich.edu int index = 0; 8096701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 8101999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 8111999SN/A // doesn't map to any simulator fd: not a valid target fd 8121999SN/A return -EBADF; 8131999SN/A } 8141999SN/A 8156701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8161999SN/A mode_t hostMode = 0; 8171999SN/A 8181999SN/A // XXX translate mode flags via OS::someting??? 8191999SN/A hostMode = mode; 8201999SN/A 8211999SN/A // do the fchmod 8221999SN/A int result = fchmod(process->sim_fd(fd), hostMode); 8231999SN/A if (result < 0) 8242218SN/A return -errno; 8251999SN/A 8261999SN/A return 0; 8271999SN/A} 8281999SN/A 8295877Shsul@eecs.umich.edu/// Target mremap() handler. 8305877Shsul@eecs.umich.edutemplate <class OS> 8315877Shsul@eecs.umich.eduSyscallReturn 8325877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8335877Shsul@eecs.umich.edu{ 8346701Sgblack@eecs.umich.edu int index = 0; 8356701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8366701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8376701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8386701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 83910027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 84010027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 84110027SChris.Adeniyi-Jones@arm.com 84210027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 84310027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8445877Shsul@eecs.umich.edu 84510318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 84610318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8475877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8485877Shsul@eecs.umich.edu return -EINVAL; 8495877Shsul@eecs.umich.edu } 8505877Shsul@eecs.umich.edu 85110486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 85210486Stjablin@gmail.com 8535877Shsul@eecs.umich.edu if (new_length > old_length) { 85410027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 85510027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8565877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8578601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8585877Shsul@eecs.umich.edu process->mmap_end += diff; 8595877Shsul@eecs.umich.edu return start; 8605877Shsul@eecs.umich.edu } else { 86110027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8625877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8635877Shsul@eecs.umich.edu return -ENOMEM; 8645877Shsul@eecs.umich.edu } else { 86510027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 86610027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 86710027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 86810027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 86910027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 87010027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8715877Shsul@eecs.umich.edu // add on the remaining unallocated pages 87210027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 87310027SChris.Adeniyi-Jones@arm.com new_length - old_length, 87410027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 87510027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 87610027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 87710027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 87810027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 87910027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 88010027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 88110027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 88210027SChris.Adeniyi-Jones@arm.com } 88310027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 88410027SChris.Adeniyi-Jones@arm.com return new_start; 8855877Shsul@eecs.umich.edu } 8865877Shsul@eecs.umich.edu } 8875877Shsul@eecs.umich.edu } else { 88810027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 88910027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 8908601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 89110027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 8925877Shsul@eecs.umich.edu } 8935877Shsul@eecs.umich.edu} 8941999SN/A 895378SN/A/// Target stat() handler. 896360SN/Atemplate <class OS> 8971450SN/ASyscallReturn 8983114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8992680Sktlim@umich.edu ThreadContext *tc) 900360SN/A{ 901360SN/A std::string path; 902360SN/A 9036701Sgblack@eecs.umich.edu int index = 0; 9048852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9056701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9066701Sgblack@eecs.umich.edu return -EFAULT; 9076701Sgblack@eecs.umich.edu } 9086701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 909360SN/A 9103669Sbinkertn@umich.edu // Adjust path for current working directory 9113669Sbinkertn@umich.edu path = process->fullPath(path); 9123669Sbinkertn@umich.edu 913360SN/A struct stat hostBuf; 914360SN/A int result = stat(path.c_str(), &hostBuf); 915360SN/A 916360SN/A if (result < 0) 9172218SN/A return -errno; 918360SN/A 9198706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 920360SN/A 9211458SN/A return 0; 922360SN/A} 923360SN/A 924360SN/A 9255074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9265074Ssaidi@eecs.umich.edutemplate <class OS> 9275074Ssaidi@eecs.umich.eduSyscallReturn 9285074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9295074Ssaidi@eecs.umich.edu ThreadContext *tc) 9305074Ssaidi@eecs.umich.edu{ 9315074Ssaidi@eecs.umich.edu std::string path; 9325074Ssaidi@eecs.umich.edu 9336701Sgblack@eecs.umich.edu int index = 0; 9348852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9356701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9365074Ssaidi@eecs.umich.edu return -EFAULT; 9376701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9385074Ssaidi@eecs.umich.edu 9395074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9405074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9415074Ssaidi@eecs.umich.edu 9425208Ssaidi@eecs.umich.edu#if NO_STAT64 9435208Ssaidi@eecs.umich.edu struct stat hostBuf; 9445208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9455208Ssaidi@eecs.umich.edu#else 9465074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9475074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9485208Ssaidi@eecs.umich.edu#endif 9495074Ssaidi@eecs.umich.edu 9505074Ssaidi@eecs.umich.edu if (result < 0) 9515074Ssaidi@eecs.umich.edu return -errno; 9525074Ssaidi@eecs.umich.edu 9538706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9545074Ssaidi@eecs.umich.edu 9555074Ssaidi@eecs.umich.edu return 0; 9565074Ssaidi@eecs.umich.edu} 9575074Ssaidi@eecs.umich.edu 9585074Ssaidi@eecs.umich.edu 95910027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 96010027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 96110027SChris.Adeniyi-Jones@arm.comSyscallReturn 96210027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 96310027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 96410027SChris.Adeniyi-Jones@arm.com{ 96510027SChris.Adeniyi-Jones@arm.com int index = 0; 96610027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 96710027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 96810027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 96910027SChris.Adeniyi-Jones@arm.com 97010027SChris.Adeniyi-Jones@arm.com std::string path; 97110027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 97210027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 97310027SChris.Adeniyi-Jones@arm.com return -EFAULT; 97410027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 97510027SChris.Adeniyi-Jones@arm.com 97610027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 97710027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 97810027SChris.Adeniyi-Jones@arm.com 97910027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 98010027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 98110027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 98210027SChris.Adeniyi-Jones@arm.com#else 98310027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 98410027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 98510027SChris.Adeniyi-Jones@arm.com#endif 98610027SChris.Adeniyi-Jones@arm.com 98710027SChris.Adeniyi-Jones@arm.com if (result < 0) 98810027SChris.Adeniyi-Jones@arm.com return -errno; 98910027SChris.Adeniyi-Jones@arm.com 99010027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 99110027SChris.Adeniyi-Jones@arm.com 99210027SChris.Adeniyi-Jones@arm.com return 0; 99310027SChris.Adeniyi-Jones@arm.com} 99410027SChris.Adeniyi-Jones@arm.com 99510027SChris.Adeniyi-Jones@arm.com 9961999SN/A/// Target fstat64() handler. 9971999SN/Atemplate <class OS> 9981999SN/ASyscallReturn 9993114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10002680Sktlim@umich.edu ThreadContext *tc) 10011999SN/A{ 10026701Sgblack@eecs.umich.edu int index = 0; 10036701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 10046701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10051999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 10061999SN/A // doesn't map to any simulator fd: not a valid target fd 10071999SN/A return -EBADF; 10081999SN/A } 10091999SN/A 10102764Sstever@eecs.umich.edu#if NO_STAT64 10112064SN/A struct stat hostBuf; 10122064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 10132064SN/A#else 10142064SN/A struct stat64 hostBuf; 10151999SN/A int result = fstat64(process->sim_fd(fd), &hostBuf); 10162064SN/A#endif 10171999SN/A 10181999SN/A if (result < 0) 10192218SN/A return -errno; 10201999SN/A 10218706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 10221999SN/A 10231999SN/A return 0; 10241999SN/A} 10251999SN/A 10261999SN/A 1027378SN/A/// Target lstat() handler. 1028360SN/Atemplate <class OS> 10291450SN/ASyscallReturn 10303114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10312680Sktlim@umich.edu ThreadContext *tc) 1032360SN/A{ 1033360SN/A std::string path; 1034360SN/A 10356701Sgblack@eecs.umich.edu int index = 0; 10368852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10376701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10386701Sgblack@eecs.umich.edu return -EFAULT; 10396701Sgblack@eecs.umich.edu } 10406701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1041360SN/A 10423669Sbinkertn@umich.edu // Adjust path for current working directory 10433669Sbinkertn@umich.edu path = process->fullPath(path); 10443669Sbinkertn@umich.edu 1045360SN/A struct stat hostBuf; 1046360SN/A int result = lstat(path.c_str(), &hostBuf); 1047360SN/A 1048360SN/A if (result < 0) 10491458SN/A return -errno; 1050360SN/A 10518706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1052360SN/A 10531458SN/A return 0; 1054360SN/A} 1055360SN/A 10561999SN/A/// Target lstat64() handler. 10571999SN/Atemplate <class OS> 10581999SN/ASyscallReturn 10593114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10602680Sktlim@umich.edu ThreadContext *tc) 10611999SN/A{ 10621999SN/A std::string path; 10631999SN/A 10646701Sgblack@eecs.umich.edu int index = 0; 10658852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10666701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10676701Sgblack@eecs.umich.edu return -EFAULT; 10686701Sgblack@eecs.umich.edu } 10696701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10701999SN/A 10713669Sbinkertn@umich.edu // Adjust path for current working directory 10723669Sbinkertn@umich.edu path = process->fullPath(path); 10733669Sbinkertn@umich.edu 10742764Sstever@eecs.umich.edu#if NO_STAT64 10752064SN/A struct stat hostBuf; 10762064SN/A int result = lstat(path.c_str(), &hostBuf); 10772064SN/A#else 10781999SN/A struct stat64 hostBuf; 10791999SN/A int result = lstat64(path.c_str(), &hostBuf); 10802064SN/A#endif 10811999SN/A 10821999SN/A if (result < 0) 10831999SN/A return -errno; 10841999SN/A 10858706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10861999SN/A 10871999SN/A return 0; 10881999SN/A} 10891999SN/A 1090378SN/A/// Target fstat() handler. 1091360SN/Atemplate <class OS> 10921450SN/ASyscallReturn 10933114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10942680Sktlim@umich.edu ThreadContext *tc) 1095360SN/A{ 10966701Sgblack@eecs.umich.edu int index = 0; 10976701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 10986701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1099360SN/A 11001969SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 1101360SN/A 1102360SN/A if (fd < 0) 11031458SN/A return -EBADF; 1104360SN/A 1105360SN/A struct stat hostBuf; 1106360SN/A int result = fstat(fd, &hostBuf); 1107360SN/A 1108360SN/A if (result < 0) 11091458SN/A return -errno; 1110360SN/A 11118706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 11122021SN/A 11131458SN/A return 0; 1114360SN/A} 1115360SN/A 1116360SN/A 11171706SN/A/// Target statfs() handler. 11181706SN/Atemplate <class OS> 11191706SN/ASyscallReturn 11203114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11212680Sktlim@umich.edu ThreadContext *tc) 11221706SN/A{ 11231706SN/A std::string path; 11241706SN/A 11256701Sgblack@eecs.umich.edu int index = 0; 11268852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11276701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11286701Sgblack@eecs.umich.edu return -EFAULT; 11296701Sgblack@eecs.umich.edu } 11306701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11311706SN/A 11323669Sbinkertn@umich.edu // Adjust path for current working directory 11333669Sbinkertn@umich.edu path = process->fullPath(path); 11343669Sbinkertn@umich.edu 11351706SN/A struct statfs hostBuf; 11361706SN/A int result = statfs(path.c_str(), &hostBuf); 11371706SN/A 11381706SN/A if (result < 0) 11392218SN/A return -errno; 11401706SN/A 11418706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11421706SN/A 11431706SN/A return 0; 11441706SN/A} 11451706SN/A 11461706SN/A 11471706SN/A/// Target fstatfs() handler. 11481706SN/Atemplate <class OS> 11491706SN/ASyscallReturn 11503114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11512680Sktlim@umich.edu ThreadContext *tc) 11521706SN/A{ 11536701Sgblack@eecs.umich.edu int index = 0; 11546701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 11556701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11561706SN/A 11571706SN/A if (fd < 0) 11581706SN/A return -EBADF; 11591706SN/A 11601706SN/A struct statfs hostBuf; 11611706SN/A int result = fstatfs(fd, &hostBuf); 11621706SN/A 11631706SN/A if (result < 0) 11642218SN/A return -errno; 11651706SN/A 11668706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11671706SN/A 11681706SN/A return 0; 11691706SN/A} 11701706SN/A 11711706SN/A 11721999SN/A/// Target writev() handler. 11731999SN/Atemplate <class OS> 11741999SN/ASyscallReturn 11753114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11762680Sktlim@umich.edu ThreadContext *tc) 11771999SN/A{ 11786701Sgblack@eecs.umich.edu int index = 0; 11796701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 11801999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 11811999SN/A // doesn't map to any simulator fd: not a valid target fd 11821999SN/A return -EBADF; 11831999SN/A } 11841999SN/A 11858852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 11866701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 11876701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 11881999SN/A struct iovec hiov[count]; 11896227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 11901999SN/A typename OS::tgt_iovec tiov; 11912461SN/A 11928852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 11938852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 11948737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 11951999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 11968852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 11978852Sandreas.hansson@arm.com hiov[i].iov_len); 11981999SN/A } 11991999SN/A 12001999SN/A int result = writev(process->sim_fd(fd), hiov, count); 12011999SN/A 12026227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12031999SN/A delete [] (char *)hiov[i].iov_base; 12041999SN/A 12051999SN/A if (result < 0) 12062218SN/A return -errno; 12071999SN/A 12081999SN/A return 0; 12091999SN/A} 12101999SN/A 12111999SN/A 1212378SN/A/// Target mmap() handler. 1213378SN/A/// 1214378SN/A/// We don't really handle mmap(). If the target is mmaping an 1215378SN/A/// anonymous region or /dev/zero, we can get away with doing basically 1216378SN/A/// nothing (since memory is initialized to zero and the simulator 12178324Ssteve.reinhardt@amd.com/// doesn't really check addresses anyway). 12188324Ssteve.reinhardt@amd.com/// 1219360SN/Atemplate <class OS> 12201450SN/ASyscallReturn 12213114Sgblack@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1222360SN/A{ 12236701Sgblack@eecs.umich.edu int index = 0; 12246701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12256701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 12266701Sgblack@eecs.umich.edu index++; // int prot = p->getSyscallArg(tc, index); 12276701Sgblack@eecs.umich.edu int flags = p->getSyscallArg(tc, index); 12288324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 122910486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1230360SN/A 12319008Sgblack@eecs.umich.edu if (length > 0x100000000ULL) 12329008Sgblack@eecs.umich.edu warn("mmap length argument %#x is unreasonably large.\n", length); 12339008Sgblack@eecs.umich.edu 12348324Ssteve.reinhardt@amd.com if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 12358324Ssteve.reinhardt@amd.com Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd); 12368324Ssteve.reinhardt@amd.com if (!fd_map || fd_map->fd < 0) { 12378324Ssteve.reinhardt@amd.com warn("mmap failing: target fd %d is not valid\n", tgt_fd); 12388324Ssteve.reinhardt@amd.com return -EBADF; 12398324Ssteve.reinhardt@amd.com } 12408324Ssteve.reinhardt@amd.com 12418324Ssteve.reinhardt@amd.com if (fd_map->filename != "/dev/zero") { 12428324Ssteve.reinhardt@amd.com // This is very likely broken, but leave a warning here 12438324Ssteve.reinhardt@amd.com // (rather than panic) in case /dev/zero is known by 12448324Ssteve.reinhardt@amd.com // another name on some platform 12458324Ssteve.reinhardt@amd.com warn("allowing mmap of file %s; mmap not supported on files" 12468324Ssteve.reinhardt@amd.com " other than /dev/zero\n", fd_map->filename); 12478324Ssteve.reinhardt@amd.com } 12488324Ssteve.reinhardt@amd.com } 12495877Shsul@eecs.umich.edu 125010486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 125110486Stjablin@gmail.com 125210318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes) != 0 || 125310486Stjablin@gmail.com (offset % TheISA::PageBytes) != 0) { 12542544SN/A warn("mmap failing: arguments not page-aligned: " 125510486Stjablin@gmail.com "start 0x%x offset 0x%x", 125610486Stjablin@gmail.com start, offset); 12572544SN/A return -EINVAL; 1258360SN/A } 1259360SN/A 12608600Ssteve.reinhardt@amd.com // are we ok with clobbering existing mappings? only set this to 12618600Ssteve.reinhardt@amd.com // true if the user has been warned. 12628600Ssteve.reinhardt@amd.com bool clobber = false; 12638600Ssteve.reinhardt@amd.com 12648600Ssteve.reinhardt@amd.com // try to use the caller-provided address if there is one 12658600Ssteve.reinhardt@amd.com bool use_provided_address = (start != 0); 12668600Ssteve.reinhardt@amd.com 12678600Ssteve.reinhardt@amd.com if (use_provided_address) { 12688600Ssteve.reinhardt@amd.com // check to see if the desired address is already in use 12698600Ssteve.reinhardt@amd.com if (!p->pTable->isUnmapped(start, length)) { 12708600Ssteve.reinhardt@amd.com // there are existing mappings in the desired range 12718600Ssteve.reinhardt@amd.com // whether we clobber them or not depends on whether the caller 12728600Ssteve.reinhardt@amd.com // specified MAP_FIXED 12738600Ssteve.reinhardt@amd.com if (flags & OS::TGT_MAP_FIXED) { 127410485SMichael.Adler@intel.com // MAP_FIXED specified: map attempt fails 127510485SMichael.Adler@intel.com return -EINVAL; 12768600Ssteve.reinhardt@amd.com } else { 12778600Ssteve.reinhardt@amd.com // MAP_FIXED not specified: ignore suggested start address 12788600Ssteve.reinhardt@amd.com warn("mmap: ignoring suggested map address 0x%x\n", start); 12798600Ssteve.reinhardt@amd.com use_provided_address = false; 12808600Ssteve.reinhardt@amd.com } 12818600Ssteve.reinhardt@amd.com } 12822544SN/A } 12832544SN/A 12848600Ssteve.reinhardt@amd.com if (!use_provided_address) { 12858600Ssteve.reinhardt@amd.com // no address provided, or provided address unusable: 12868600Ssteve.reinhardt@amd.com // pick next address from our "mmap region" 12878600Ssteve.reinhardt@amd.com if (OS::mmapGrowsDown()) { 12888600Ssteve.reinhardt@amd.com start = p->mmap_end - length; 12898600Ssteve.reinhardt@amd.com p->mmap_end = start; 12908600Ssteve.reinhardt@amd.com } else { 12918600Ssteve.reinhardt@amd.com start = p->mmap_end; 12928600Ssteve.reinhardt@amd.com p->mmap_end += length; 12938600Ssteve.reinhardt@amd.com } 12946672Sgblack@eecs.umich.edu } 12958600Ssteve.reinhardt@amd.com 12968601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 12972544SN/A 12981458SN/A return start; 1299360SN/A} 1300360SN/A 1301378SN/A/// Target getrlimit() handler. 1302360SN/Atemplate <class OS> 13031450SN/ASyscallReturn 13043114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13052680Sktlim@umich.edu ThreadContext *tc) 1306360SN/A{ 13076701Sgblack@eecs.umich.edu int index = 0; 13086701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 13096701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1310360SN/A 1311360SN/A switch (resource) { 13122064SN/A case OS::TGT_RLIMIT_STACK: 13135877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 13142064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 13158737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 13168737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 13172064SN/A break; 1318360SN/A 13195877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 13205877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 13215877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 13228737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 13238737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 13245877Shsul@eecs.umich.edu break; 13255877Shsul@eecs.umich.edu 13262064SN/A default: 13272064SN/A std::cerr << "getrlimitFunc: unimplemented resource " << resource 13282064SN/A << std::endl; 13292064SN/A abort(); 13302064SN/A break; 1331360SN/A } 1332360SN/A 13338706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 13341458SN/A return 0; 1335360SN/A} 1336360SN/A 1337378SN/A/// Target gettimeofday() handler. 1338360SN/Atemplate <class OS> 13391450SN/ASyscallReturn 13403114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13412680Sktlim@umich.edu ThreadContext *tc) 1342360SN/A{ 13436701Sgblack@eecs.umich.edu int index = 0; 13446701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1345360SN/A 1346360SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1347360SN/A tp->tv_sec += seconds_since_epoch; 13486109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 13496109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1350360SN/A 13518706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1352360SN/A 13531458SN/A return 0; 1354360SN/A} 1355360SN/A 1356360SN/A 13571999SN/A/// Target utimes() handler. 13581999SN/Atemplate <class OS> 13591999SN/ASyscallReturn 13603114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13612680Sktlim@umich.edu ThreadContext *tc) 13621999SN/A{ 13631999SN/A std::string path; 13641999SN/A 13656701Sgblack@eecs.umich.edu int index = 0; 13668852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 13676701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 13686701Sgblack@eecs.umich.edu return -EFAULT; 13696701Sgblack@eecs.umich.edu } 13701999SN/A 13716701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 13726701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 13738706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 13741999SN/A 13751999SN/A struct timeval hostTimeval[2]; 13761999SN/A for (int i = 0; i < 2; ++i) 13771999SN/A { 13788737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 13798737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 13801999SN/A } 13813669Sbinkertn@umich.edu 13823669Sbinkertn@umich.edu // Adjust path for current working directory 13833669Sbinkertn@umich.edu path = process->fullPath(path); 13843669Sbinkertn@umich.edu 13851999SN/A int result = utimes(path.c_str(), hostTimeval); 13861999SN/A 13871999SN/A if (result < 0) 13881999SN/A return -errno; 13891999SN/A 13901999SN/A return 0; 13911999SN/A} 1392378SN/A/// Target getrusage() function. 1393360SN/Atemplate <class OS> 13941450SN/ASyscallReturn 13953114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13962680Sktlim@umich.edu ThreadContext *tc) 1397360SN/A{ 13986701Sgblack@eecs.umich.edu int index = 0; 13996701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 14006701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1401360SN/A 14023670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 14033670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1404360SN/A rup->ru_stime.tv_sec = 0; 1405360SN/A rup->ru_stime.tv_usec = 0; 1406360SN/A rup->ru_maxrss = 0; 1407360SN/A rup->ru_ixrss = 0; 1408360SN/A rup->ru_idrss = 0; 1409360SN/A rup->ru_isrss = 0; 1410360SN/A rup->ru_minflt = 0; 1411360SN/A rup->ru_majflt = 0; 1412360SN/A rup->ru_nswap = 0; 1413360SN/A rup->ru_inblock = 0; 1414360SN/A rup->ru_oublock = 0; 1415360SN/A rup->ru_msgsnd = 0; 1416360SN/A rup->ru_msgrcv = 0; 1417360SN/A rup->ru_nsignals = 0; 1418360SN/A rup->ru_nvcsw = 0; 1419360SN/A rup->ru_nivcsw = 0; 1420360SN/A 14213670Sbinkertn@umich.edu switch (who) { 14223670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 14233670Sbinkertn@umich.edu getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 14248737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 14258737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 14263670Sbinkertn@umich.edu break; 14273670Sbinkertn@umich.edu 14283670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 14293670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 14303670Sbinkertn@umich.edu break; 14313670Sbinkertn@umich.edu 14323670Sbinkertn@umich.edu default: 14333670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 14343670Sbinkertn@umich.edu // plow ahead 14353670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 14363670Sbinkertn@umich.edu who); 14373670Sbinkertn@umich.edu } 14383670Sbinkertn@umich.edu 14398706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1440360SN/A 14411458SN/A return 0; 1442360SN/A} 1443360SN/A 14446683Stjones1@inf.ed.ac.uk/// Target times() function. 14456683Stjones1@inf.ed.ac.uktemplate <class OS> 14466683Stjones1@inf.ed.ac.ukSyscallReturn 14476683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14486683Stjones1@inf.ed.ac.uk ThreadContext *tc) 14496683Stjones1@inf.ed.ac.uk{ 14506701Sgblack@eecs.umich.edu int index = 0; 14516701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 14526683Stjones1@inf.ed.ac.uk 14536683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 14547823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 14556683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 14566683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 14576683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 14586683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 14596683Stjones1@inf.ed.ac.uk 14606683Stjones1@inf.ed.ac.uk // Convert to host endianness 14618737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 14626683Stjones1@inf.ed.ac.uk 14636683Stjones1@inf.ed.ac.uk // Write back 14648706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 14656683Stjones1@inf.ed.ac.uk 14666683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 14676683Stjones1@inf.ed.ac.uk return clocks; 14686683Stjones1@inf.ed.ac.uk} 14692553SN/A 14706684Stjones1@inf.ed.ac.uk/// Target time() function. 14716684Stjones1@inf.ed.ac.uktemplate <class OS> 14726684Stjones1@inf.ed.ac.ukSyscallReturn 14736684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14746684Stjones1@inf.ed.ac.uk ThreadContext *tc) 14756684Stjones1@inf.ed.ac.uk{ 14766684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 14776684Stjones1@inf.ed.ac.uk getElapsedTime(sec, usec); 14786684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 14796684Stjones1@inf.ed.ac.uk 14806701Sgblack@eecs.umich.edu int index = 0; 14816701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 14826684Stjones1@inf.ed.ac.uk if(taddr != 0) { 14836684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 14848737Skoansin.tan@gmail.com t = TheISA::htog(t); 14858852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 14868852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 14876684Stjones1@inf.ed.ac.uk } 14886684Stjones1@inf.ed.ac.uk return sec; 14896684Stjones1@inf.ed.ac.uk} 14902553SN/A 14912553SN/A 14921354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1493