syscall_emul.hh revision 10486
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" 808229Snate@binkert.org#include "sim/process.hh" 818766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 826640Svince@csl.cornell.edu#include "sim/system.hh" 83360SN/A 84360SN/A/// 85360SN/A/// System call descriptor. 86360SN/A/// 87360SN/Aclass SyscallDesc { 88360SN/A 89360SN/A public: 90360SN/A 91378SN/A /// Typedef for target syscall handler functions. 921450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 933114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 94360SN/A 955543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 965543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 975543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 98360SN/A 99360SN/A /// Flag values for controlling syscall behavior. 100360SN/A enum Flags { 101360SN/A /// Don't set return regs according to funcPtr return value. 102360SN/A /// Used for syscalls with non-standard return conventions 1032680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 104360SN/A /// sigreturn). 105360SN/A SuppressReturnValue = 1 106360SN/A }; 107360SN/A 108360SN/A /// Constructor. 109360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 110360SN/A : name(_name), funcPtr(_funcPtr), flags(_flags) 111360SN/A { 112360SN/A } 113360SN/A 114360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1153114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 116360SN/A}; 117360SN/A 118360SN/A 119360SN/Aclass BaseBufferArg { 120360SN/A 121360SN/A public: 122360SN/A 123360SN/A BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size) 124360SN/A { 125360SN/A bufPtr = new uint8_t[size]; 126360SN/A // clear out buffer: in case we only partially populate this, 127360SN/A // and then do a copyOut(), we want to make sure we don't 128360SN/A // introduce any random junk into the simulated address space 129360SN/A memset(bufPtr, 0, size); 130360SN/A } 131360SN/A 132360SN/A virtual ~BaseBufferArg() { delete [] bufPtr; } 133360SN/A 134360SN/A // 135360SN/A // copy data into simulator space (read from target memory) 136360SN/A // 1378852Sandreas.hansson@arm.com virtual bool copyIn(SETranslatingPortProxy &memproxy) 138360SN/A { 1398852Sandreas.hansson@arm.com memproxy.readBlob(addr, bufPtr, size); 1405543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 141360SN/A } 142360SN/A 143360SN/A // 144360SN/A // copy data out of simulator space (write to target memory) 145360SN/A // 1468852Sandreas.hansson@arm.com virtual bool copyOut(SETranslatingPortProxy &memproxy) 147360SN/A { 1488852Sandreas.hansson@arm.com memproxy.writeBlob(addr, bufPtr, size); 1495543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 150360SN/A } 151360SN/A 152360SN/A protected: 153360SN/A Addr addr; 154360SN/A int size; 155360SN/A uint8_t *bufPtr; 156360SN/A}; 157360SN/A 158360SN/A 159360SN/Aclass BufferArg : public BaseBufferArg 160360SN/A{ 161360SN/A public: 162360SN/A BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { } 1635543Ssaidi@eecs.umich.edu void *bufferPtr() { return bufPtr; } 164360SN/A}; 165360SN/A 166360SN/Atemplate <class T> 167360SN/Aclass TypedBufferArg : public BaseBufferArg 168360SN/A{ 169360SN/A public: 170360SN/A // user can optionally specify a specific number of bytes to 171360SN/A // allocate to deal with those structs that have variable-size 172360SN/A // arrays at the end 173360SN/A TypedBufferArg(Addr _addr, int _size = sizeof(T)) 174360SN/A : BaseBufferArg(_addr, _size) 175360SN/A { } 176360SN/A 177360SN/A // type case 178360SN/A operator T*() { return (T *)bufPtr; } 179360SN/A 180360SN/A // dereference operators 1815543Ssaidi@eecs.umich.edu T &operator*() { return *((T *)bufPtr); } 1825543Ssaidi@eecs.umich.edu T* operator->() { return (T *)bufPtr; } 183502SN/A T &operator[](int i) { return ((T *)bufPtr)[i]; } 184360SN/A}; 185360SN/A 186360SN/A////////////////////////////////////////////////////////////////////// 187360SN/A// 188360SN/A// The following emulation functions are generic enough that they 189360SN/A// don't need to be recompiled for different emulated OS's. They are 190360SN/A// defined in sim/syscall_emul.cc. 191360SN/A// 192360SN/A////////////////////////////////////////////////////////////////////// 193360SN/A 194360SN/A 195378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1961706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1973114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 198378SN/A 199378SN/A/// Handler for unimplemented syscalls that we never intend to 200378SN/A/// implement (signal handling, etc.) and should not affect the correct 201378SN/A/// behavior of the program. Print a warning only if the appropriate 202378SN/A/// trace flag is enabled. Return success to the target program. 2031706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 2043114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2058149SChris.Emmons@ARM.comSyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num, 2068149SChris.Emmons@ARM.com LiveProcess *p, ThreadContext *tc); 207360SN/A 2086109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 2091706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 2103114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 211378SN/A 2126109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 2136109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 2146109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2156109Ssanchezd@stanford.edu 216378SN/A/// Target getpagesize() handler. 2171706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 2183114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 219378SN/A 2205748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 2215748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 2225748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 223378SN/A 224378SN/A/// Target close() handler. 2251706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 2263114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 227378SN/A 228378SN/A/// Target read() handler. 2291706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 2303114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 231378SN/A 232378SN/A/// Target write() handler. 2331706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 2343114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 235378SN/A 236378SN/A/// Target lseek() handler. 2371706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 2383114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 239378SN/A 2404118Sgblack@eecs.umich.edu/// Target _llseek() handler. 2414118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 2424118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2434118Sgblack@eecs.umich.edu 244378SN/A/// Target munmap() handler. 2451706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2463114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 247378SN/A 248378SN/A/// Target gethostname() handler. 2491706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2503114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 251360SN/A 2525513SMichael.Adler@intel.com/// Target getcwd() handler. 2535513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2545513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2555513SMichael.Adler@intel.com 25610203SAli.Saidi@ARM.com/// Target readlink() handler. 25710203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 25810203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 25910203SAli.Saidi@ARM.com int index = 0); 2605513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2615513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2625513SMichael.Adler@intel.com 263511SN/A/// Target unlink() handler. 2641706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2653114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 266511SN/A 2675513SMichael.Adler@intel.com/// Target mkdir() handler. 2685513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2695513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2705513SMichael.Adler@intel.com 271511SN/A/// Target rename() handler. 2721706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2733114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2741706SN/A 2751706SN/A 2761706SN/A/// Target truncate() handler. 2771706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2783114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2791706SN/A 2801706SN/A 2811706SN/A/// Target ftruncate() handler. 2821706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2833114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2841706SN/A 285511SN/A 2866703Svince@csl.cornell.edu/// Target truncate64() handler. 2876703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2886703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2896703Svince@csl.cornell.edu 2906685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2916685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2926685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2936685Stjones1@inf.ed.ac.uk 2946685Stjones1@inf.ed.ac.uk 2955513SMichael.Adler@intel.com/// Target umask() handler. 2965513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2975513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2985513SMichael.Adler@intel.com 2995513SMichael.Adler@intel.com 3001999SN/A/// Target chown() handler. 3011999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 3023114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3031999SN/A 3041999SN/A 3051999SN/A/// Target fchown() handler. 3061999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 3073114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3081999SN/A 3093079Sstever@eecs.umich.edu/// Target dup() handler. 3103079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 3113114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3123079Sstever@eecs.umich.edu 3132093SN/A/// Target fnctl() handler. 3142093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 3153114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3162093SN/A 3172687Sksewell@umich.edu/// Target fcntl64() handler. 3182687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 3193114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3202687Sksewell@umich.edu 3212238SN/A/// Target setuid() handler. 3222238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 3233114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3242238SN/A 3252238SN/A/// Target getpid() handler. 3262238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 3273114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3282238SN/A 3292238SN/A/// Target getuid() handler. 3302238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 3313114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3322238SN/A 3332238SN/A/// Target getgid() handler. 3342238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 3353114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3362238SN/A 3372238SN/A/// Target getppid() handler. 3382238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 3393114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3402238SN/A 3412238SN/A/// Target geteuid() handler. 3422238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3433114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3442238SN/A 3452238SN/A/// Target getegid() handler. 3462238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3473114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3482238SN/A 3496109Ssanchezd@stanford.edu/// Target clone() handler. 3506109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3516109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3522238SN/A 3539455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3549455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3559455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 35610203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 35710203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 35810203SAli.Saidi@ARM.com int index); 3599455Smitch.hayenga+gem5@gmail.com 3609112Smarc.orr@gmail.com/// Futex system call 3619112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3629112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3639112Smarc.orr@gmail.comtemplate <class OS> 3649112Smarc.orr@gmail.comSyscallReturn 3659112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3669112Smarc.orr@gmail.com ThreadContext *tc) 3679112Smarc.orr@gmail.com{ 3689112Smarc.orr@gmail.com int index_uaddr = 0; 3699112Smarc.orr@gmail.com int index_op = 1; 3709112Smarc.orr@gmail.com int index_val = 2; 3719112Smarc.orr@gmail.com int index_timeout = 3; 3729112Smarc.orr@gmail.com 3739112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3749112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3759112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3769112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3779112Smarc.orr@gmail.com 3789112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3799112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3809112Smarc.orr@gmail.com 3819112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3829112Smarc.orr@gmail.com uaddr, op, val); 3839112Smarc.orr@gmail.com 3849238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3859112Smarc.orr@gmail.com 3869112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3879112Smarc.orr@gmail.com if (timeout != 0) { 3889112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3899112Smarc.orr@gmail.com "we'll wait indefinitely"); 3909112Smarc.orr@gmail.com } 3919112Smarc.orr@gmail.com 3929112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3939112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3949112Smarc.orr@gmail.com int mem_val = *((int *)buf); 3959112Smarc.orr@gmail.com delete buf; 3969112Smarc.orr@gmail.com 3979112Smarc.orr@gmail.com if(val != mem_val) { 3989112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3999112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 4009112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 4019112Smarc.orr@gmail.com } 4029112Smarc.orr@gmail.com 4039112Smarc.orr@gmail.com // Queue the thread context 4049112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 4059112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 4069112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 4079112Smarc.orr@gmail.com } else { 4089112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 4099112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 4109112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 4119112Smarc.orr@gmail.com } 4129112Smarc.orr@gmail.com tcWaitList->push_back(tc); 4139112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 4149112Smarc.orr@gmail.com "thread context\n"); 4159112Smarc.orr@gmail.com tc->suspend(); 4169112Smarc.orr@gmail.com return 0; 4179112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 4189112Smarc.orr@gmail.com int wokenUp = 0; 4199112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 4209112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 4219112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 4229112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 4239112Smarc.orr@gmail.com tcWaitList->front()->activate(); 4249112Smarc.orr@gmail.com tcWaitList->pop_front(); 4259112Smarc.orr@gmail.com wokenUp++; 4269112Smarc.orr@gmail.com } 4279112Smarc.orr@gmail.com if(tcWaitList->empty()) { 4289112Smarc.orr@gmail.com futex_map.erase(uaddr); 4299112Smarc.orr@gmail.com delete tcWaitList; 4309112Smarc.orr@gmail.com } 4319112Smarc.orr@gmail.com } 4329112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 4339112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 4349112Smarc.orr@gmail.com return wokenUp; 4359112Smarc.orr@gmail.com } else { 4369238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 4379112Smarc.orr@gmail.com return 0; 4389112Smarc.orr@gmail.com } 4399112Smarc.orr@gmail.com 4409112Smarc.orr@gmail.com} 4419112Smarc.orr@gmail.com 44210484SMichael.Adler@intel.com/// Target getdents() handler. 44310484SMichael.Adler@intel.comSyscallReturn getdentsFunc(SyscallDesc *desc, int num, 44410484SMichael.Adler@intel.com LiveProcess *process, ThreadContext *tc); 44510484SMichael.Adler@intel.com 44610484SMichael.Adler@intel.com/// Target getdents64() handler. 44710484SMichael.Adler@intel.comSyscallReturn getdents64Func(SyscallDesc *desc, int num, 44810484SMichael.Adler@intel.com LiveProcess *process, ThreadContext *tc); 44910484SMichael.Adler@intel.com 4502238SN/A 4512238SN/A/// Pseudo Funcs - These functions use a different return convension, 4522238SN/A/// returning a second value in a register other than the normal return register 4532238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 4543114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4552238SN/A 4562238SN/A/// Target getpidPseudo() handler. 4572238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4583114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4592238SN/A 4602238SN/A/// Target getuidPseudo() handler. 4612238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 4623114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4632238SN/A 4642238SN/A/// Target getgidPseudo() handler. 4652238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4663114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4672238SN/A 4682238SN/A 4691354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4701354SN/Aconst int one_million = 1000000; 4711354SN/A 4721354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4731354SN/A/// by my reckoning. We want to keep this a constant (not use the 4741354SN/A/// real-world time) to keep simulations repeatable. 4751354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4761354SN/A 4771354SN/A/// Helper function to convert current elapsed time to seconds and 4781354SN/A/// microseconds. 4791354SN/Atemplate <class T1, class T2> 4801354SN/Avoid 4811354SN/AgetElapsedTime(T1 &sec, T2 &usec) 4821354SN/A{ 4837823Ssteve.reinhardt@amd.com int elapsed_usecs = curTick() / SimClock::Int::us; 4841354SN/A sec = elapsed_usecs / one_million; 4851354SN/A usec = elapsed_usecs % one_million; 4861354SN/A} 4871354SN/A 488360SN/A////////////////////////////////////////////////////////////////////// 489360SN/A// 490360SN/A// The following emulation functions are generic, but need to be 491360SN/A// templated to account for differences in types, constants, etc. 492360SN/A// 493360SN/A////////////////////////////////////////////////////////////////////// 494360SN/A 4953113Sgblack@eecs.umich.edu#if NO_STAT64 4963113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4973113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4983113Sgblack@eecs.umich.edu#else 4993113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 5003113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 5013113Sgblack@eecs.umich.edu#endif 5023113Sgblack@eecs.umich.edu 5033113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 5043113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 5053113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 5063113Sgblack@eecs.umich.edu 5073113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 5083113Sgblack@eecs.umich.edustatic void 5093113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 5103113Sgblack@eecs.umich.edu{ 5114189Sgblack@eecs.umich.edu using namespace TheISA; 5124189Sgblack@eecs.umich.edu 5133113Sgblack@eecs.umich.edu if (fakeTTY) 5143113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 5153113Sgblack@eecs.umich.edu else 5163113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 5178737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 5183113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 5198737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 5203277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 5215515SMichael.Adler@intel.com if (fakeTTY) { 5225515SMichael.Adler@intel.com // Claim to be a character device 5235515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 5245515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 5255515SMichael.Adler@intel.com } 5268737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 5273277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 5288737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 5293277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 5308737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 5313277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 5328737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 5333113Sgblack@eecs.umich.edu if (fakeTTY) 5343113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 5353113Sgblack@eecs.umich.edu else 5363113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 5378737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 5383113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 5398737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 5403114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5418737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5423114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5438737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5443114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5458737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5464061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5474061Sgblack@eecs.umich.edu // consistently across different hosts. 5484061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5498737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5503113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5518737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5523113Sgblack@eecs.umich.edu} 5533113Sgblack@eecs.umich.edu 5543113Sgblack@eecs.umich.edu// Same for stat64 5553113Sgblack@eecs.umich.edu 5563113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5573113Sgblack@eecs.umich.edustatic void 5583113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5593113Sgblack@eecs.umich.edu{ 5604189Sgblack@eecs.umich.edu using namespace TheISA; 5614189Sgblack@eecs.umich.edu 5623113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5633113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5643113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5658737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5663113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5678737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5683113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5698737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5703113Sgblack@eecs.umich.edu#else 5713113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5723113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5733113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5743113Sgblack@eecs.umich.edu#endif 5753113Sgblack@eecs.umich.edu} 5763113Sgblack@eecs.umich.edu 5773113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5783113Sgblack@eecs.umich.edutemplate<class OS> 5793113Sgblack@eecs.umich.edustatic void 5808852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5813113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5823113Sgblack@eecs.umich.edu{ 5833113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5843113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5853113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5863113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5873113Sgblack@eecs.umich.edu} 5883113Sgblack@eecs.umich.edu 5893113Sgblack@eecs.umich.edutemplate<class OS> 5903113Sgblack@eecs.umich.edustatic void 5918852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5923113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5933113Sgblack@eecs.umich.edu{ 5943113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5953113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5966686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5973113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5983113Sgblack@eecs.umich.edu} 5993113Sgblack@eecs.umich.edu 600378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 601378SN/A/// only to find out if their stdout is a tty, to determine whether to 6029141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 6039141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 604360SN/Atemplate <class OS> 6051450SN/ASyscallReturn 6063114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6072680Sktlim@umich.edu ThreadContext *tc) 608360SN/A{ 6096701Sgblack@eecs.umich.edu int index = 0; 6106701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 6116701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 612360SN/A 6131969SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 614360SN/A 615360SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 616360SN/A // doesn't map to any simulator fd: not a valid target fd 6171458SN/A return -EBADF; 618360SN/A } 619360SN/A 6209141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 6211458SN/A return -ENOTTY; 6229141Smarc.orr@gmail.com } 623360SN/A 6249141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 6259141Smarc.orr@gmail.com fd, req, tc->pcState()); 6269141Smarc.orr@gmail.com return -ENOTTY; 627360SN/A} 628360SN/A 629360SN/Atemplate <class OS> 63010027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 6313114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 63210027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 633360SN/A{ 634360SN/A std::string path; 635360SN/A 6368852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 6376701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6381458SN/A return -EFAULT; 639360SN/A 640360SN/A if (path == "/dev/sysdev0") { 641360SN/A // This is a memory-mapped high-resolution timer device on Alpha. 642360SN/A // We don't support it, so just punt. 6431706SN/A warn("Ignoring open(%s, ...)\n", path); 6441458SN/A return -ENOENT; 645360SN/A } 646360SN/A 6476701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6486701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 649360SN/A int hostFlags = 0; 650360SN/A 651360SN/A // translate open flags 652360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 653360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 654360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 655360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 656360SN/A } 657360SN/A } 658360SN/A 659360SN/A // any target flags left? 660360SN/A if (tgtFlags != 0) 6611706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 662360SN/A 663360SN/A#ifdef __CYGWIN32__ 664360SN/A hostFlags |= O_BINARY; 665360SN/A#endif 666360SN/A 6673669Sbinkertn@umich.edu // Adjust path for current working directory 6683669Sbinkertn@umich.edu path = process->fullPath(path); 6693669Sbinkertn@umich.edu 6701706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6711706SN/A 6725795Ssaidi@eecs.umich.edu int fd; 6739143Ssteve.reinhardt@amd.com int local_errno; 6749142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6759142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6769143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6775795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6789143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6795795Ssaidi@eecs.umich.edu } else { 6805795Ssaidi@eecs.umich.edu // open the file 6815795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6829143Ssteve.reinhardt@amd.com local_errno = errno; 6835795Ssaidi@eecs.umich.edu } 684360SN/A 6859143Ssteve.reinhardt@amd.com if (fd == -1) 6869143Ssteve.reinhardt@amd.com return -local_errno; 6879143Ssteve.reinhardt@amd.com 6889143Ssteve.reinhardt@amd.com return process->alloc_fd(fd, path.c_str(), hostFlags, mode, false); 689360SN/A} 690360SN/A 69110027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 69210027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 69310027SChris.Adeniyi-Jones@arm.comSyscallReturn 69410027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69510027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 69610027SChris.Adeniyi-Jones@arm.com{ 69710027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 69810027SChris.Adeniyi-Jones@arm.com} 69910027SChris.Adeniyi-Jones@arm.com 70010027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 70110027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 70210027SChris.Adeniyi-Jones@arm.comSyscallReturn 70310027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70410027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 70510027SChris.Adeniyi-Jones@arm.com{ 70610027SChris.Adeniyi-Jones@arm.com int index = 0; 70710027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 70810027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 70910027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 71010027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 71110027SChris.Adeniyi-Jones@arm.com} 71210027SChris.Adeniyi-Jones@arm.com 71310203SAli.Saidi@ARM.com/// Target facessat() handler 71410203SAli.Saidi@ARM.comtemplate <class OS> 71510203SAli.Saidi@ARM.comSyscallReturn 71610203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 71710203SAli.Saidi@ARM.com ThreadContext *tc) 71810203SAli.Saidi@ARM.com{ 71910203SAli.Saidi@ARM.com int index = 0; 72010203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 72110203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 72210203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 72310203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 72410203SAli.Saidi@ARM.com} 72510203SAli.Saidi@ARM.com 72610203SAli.Saidi@ARM.com/// Target readlinkat() handler 72710203SAli.Saidi@ARM.comtemplate <class OS> 72810203SAli.Saidi@ARM.comSyscallReturn 72910203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 73010203SAli.Saidi@ARM.com ThreadContext *tc) 73110203SAli.Saidi@ARM.com{ 73210203SAli.Saidi@ARM.com int index = 0; 73310203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 73410203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 73510203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 73610203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 73710203SAli.Saidi@ARM.com} 73810203SAli.Saidi@ARM.com 7396640Svince@csl.cornell.edu/// Target sysinfo() handler. 7406640Svince@csl.cornell.edutemplate <class OS> 7416640Svince@csl.cornell.eduSyscallReturn 7426640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7436640Svince@csl.cornell.edu ThreadContext *tc) 7446640Svince@csl.cornell.edu{ 7456640Svince@csl.cornell.edu 7466701Sgblack@eecs.umich.edu int index = 0; 7476701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 7486701Sgblack@eecs.umich.edu sysinfo(process->getSyscallArg(tc, index)); 7496640Svince@csl.cornell.edu 7506701Sgblack@eecs.umich.edu sysinfo->uptime=seconds_since_epoch; 7516701Sgblack@eecs.umich.edu sysinfo->totalram=process->system->memSize(); 7526640Svince@csl.cornell.edu 7538706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7546640Svince@csl.cornell.edu 7556701Sgblack@eecs.umich.edu return 0; 7566640Svince@csl.cornell.edu} 757360SN/A 7581999SN/A/// Target chmod() handler. 7591999SN/Atemplate <class OS> 7601999SN/ASyscallReturn 7613114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7622680Sktlim@umich.edu ThreadContext *tc) 7631999SN/A{ 7641999SN/A std::string path; 7651999SN/A 7666701Sgblack@eecs.umich.edu int index = 0; 7678852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7686701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7691999SN/A return -EFAULT; 7706701Sgblack@eecs.umich.edu } 7711999SN/A 7726701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7731999SN/A mode_t hostMode = 0; 7741999SN/A 7751999SN/A // XXX translate mode flags via OS::something??? 7761999SN/A hostMode = mode; 7771999SN/A 7783669Sbinkertn@umich.edu // Adjust path for current working directory 7793669Sbinkertn@umich.edu path = process->fullPath(path); 7803669Sbinkertn@umich.edu 7811999SN/A // do the chmod 7821999SN/A int result = chmod(path.c_str(), hostMode); 7831999SN/A if (result < 0) 7842218SN/A return -errno; 7851999SN/A 7861999SN/A return 0; 7871999SN/A} 7881999SN/A 7891999SN/A 7901999SN/A/// Target fchmod() handler. 7911999SN/Atemplate <class OS> 7921999SN/ASyscallReturn 7933114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7942680Sktlim@umich.edu ThreadContext *tc) 7951999SN/A{ 7966701Sgblack@eecs.umich.edu int index = 0; 7976701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 7981999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 7991999SN/A // doesn't map to any simulator fd: not a valid target fd 8001999SN/A return -EBADF; 8011999SN/A } 8021999SN/A 8036701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8041999SN/A mode_t hostMode = 0; 8051999SN/A 8061999SN/A // XXX translate mode flags via OS::someting??? 8071999SN/A hostMode = mode; 8081999SN/A 8091999SN/A // do the fchmod 8101999SN/A int result = fchmod(process->sim_fd(fd), hostMode); 8111999SN/A if (result < 0) 8122218SN/A return -errno; 8131999SN/A 8141999SN/A return 0; 8151999SN/A} 8161999SN/A 8175877Shsul@eecs.umich.edu/// Target mremap() handler. 8185877Shsul@eecs.umich.edutemplate <class OS> 8195877Shsul@eecs.umich.eduSyscallReturn 8205877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8215877Shsul@eecs.umich.edu{ 8226701Sgblack@eecs.umich.edu int index = 0; 8236701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8246701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8256701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8266701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 82710027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 82810027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 82910027SChris.Adeniyi-Jones@arm.com 83010027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 83110027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8325877Shsul@eecs.umich.edu 83310318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 83410318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8355877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8365877Shsul@eecs.umich.edu return -EINVAL; 8375877Shsul@eecs.umich.edu } 8385877Shsul@eecs.umich.edu 83910486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 84010486Stjablin@gmail.com 8415877Shsul@eecs.umich.edu if (new_length > old_length) { 84210027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 84310027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8445877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8458601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8465877Shsul@eecs.umich.edu process->mmap_end += diff; 8475877Shsul@eecs.umich.edu return start; 8485877Shsul@eecs.umich.edu } else { 84910027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8505877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8515877Shsul@eecs.umich.edu return -ENOMEM; 8525877Shsul@eecs.umich.edu } else { 85310027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 85410027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 85510027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 85610027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 85710027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 85810027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8595877Shsul@eecs.umich.edu // add on the remaining unallocated pages 86010027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 86110027SChris.Adeniyi-Jones@arm.com new_length - old_length, 86210027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 86310027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 86410027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 86510027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 86610027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 86710027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 86810027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 86910027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 87010027SChris.Adeniyi-Jones@arm.com } 87110027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 87210027SChris.Adeniyi-Jones@arm.com return new_start; 8735877Shsul@eecs.umich.edu } 8745877Shsul@eecs.umich.edu } 8755877Shsul@eecs.umich.edu } else { 87610027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 87710027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 8788601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 87910027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 8805877Shsul@eecs.umich.edu } 8815877Shsul@eecs.umich.edu} 8821999SN/A 883378SN/A/// Target stat() handler. 884360SN/Atemplate <class OS> 8851450SN/ASyscallReturn 8863114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8872680Sktlim@umich.edu ThreadContext *tc) 888360SN/A{ 889360SN/A std::string path; 890360SN/A 8916701Sgblack@eecs.umich.edu int index = 0; 8928852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8936701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8946701Sgblack@eecs.umich.edu return -EFAULT; 8956701Sgblack@eecs.umich.edu } 8966701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 897360SN/A 8983669Sbinkertn@umich.edu // Adjust path for current working directory 8993669Sbinkertn@umich.edu path = process->fullPath(path); 9003669Sbinkertn@umich.edu 901360SN/A struct stat hostBuf; 902360SN/A int result = stat(path.c_str(), &hostBuf); 903360SN/A 904360SN/A if (result < 0) 9052218SN/A return -errno; 906360SN/A 9078706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 908360SN/A 9091458SN/A return 0; 910360SN/A} 911360SN/A 912360SN/A 9135074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9145074Ssaidi@eecs.umich.edutemplate <class OS> 9155074Ssaidi@eecs.umich.eduSyscallReturn 9165074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9175074Ssaidi@eecs.umich.edu ThreadContext *tc) 9185074Ssaidi@eecs.umich.edu{ 9195074Ssaidi@eecs.umich.edu std::string path; 9205074Ssaidi@eecs.umich.edu 9216701Sgblack@eecs.umich.edu int index = 0; 9228852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9236701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9245074Ssaidi@eecs.umich.edu return -EFAULT; 9256701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9265074Ssaidi@eecs.umich.edu 9275074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9285074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9295074Ssaidi@eecs.umich.edu 9305208Ssaidi@eecs.umich.edu#if NO_STAT64 9315208Ssaidi@eecs.umich.edu struct stat hostBuf; 9325208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9335208Ssaidi@eecs.umich.edu#else 9345074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9355074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9365208Ssaidi@eecs.umich.edu#endif 9375074Ssaidi@eecs.umich.edu 9385074Ssaidi@eecs.umich.edu if (result < 0) 9395074Ssaidi@eecs.umich.edu return -errno; 9405074Ssaidi@eecs.umich.edu 9418706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9425074Ssaidi@eecs.umich.edu 9435074Ssaidi@eecs.umich.edu return 0; 9445074Ssaidi@eecs.umich.edu} 9455074Ssaidi@eecs.umich.edu 9465074Ssaidi@eecs.umich.edu 94710027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 94810027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 94910027SChris.Adeniyi-Jones@arm.comSyscallReturn 95010027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 95110027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 95210027SChris.Adeniyi-Jones@arm.com{ 95310027SChris.Adeniyi-Jones@arm.com int index = 0; 95410027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 95510027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 95610027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 95710027SChris.Adeniyi-Jones@arm.com 95810027SChris.Adeniyi-Jones@arm.com std::string path; 95910027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 96010027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 96110027SChris.Adeniyi-Jones@arm.com return -EFAULT; 96210027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 96310027SChris.Adeniyi-Jones@arm.com 96410027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 96510027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 96610027SChris.Adeniyi-Jones@arm.com 96710027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 96810027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 96910027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 97010027SChris.Adeniyi-Jones@arm.com#else 97110027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 97210027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 97310027SChris.Adeniyi-Jones@arm.com#endif 97410027SChris.Adeniyi-Jones@arm.com 97510027SChris.Adeniyi-Jones@arm.com if (result < 0) 97610027SChris.Adeniyi-Jones@arm.com return -errno; 97710027SChris.Adeniyi-Jones@arm.com 97810027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 97910027SChris.Adeniyi-Jones@arm.com 98010027SChris.Adeniyi-Jones@arm.com return 0; 98110027SChris.Adeniyi-Jones@arm.com} 98210027SChris.Adeniyi-Jones@arm.com 98310027SChris.Adeniyi-Jones@arm.com 9841999SN/A/// Target fstat64() handler. 9851999SN/Atemplate <class OS> 9861999SN/ASyscallReturn 9873114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9882680Sktlim@umich.edu ThreadContext *tc) 9891999SN/A{ 9906701Sgblack@eecs.umich.edu int index = 0; 9916701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 9926701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9931999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 9941999SN/A // doesn't map to any simulator fd: not a valid target fd 9951999SN/A return -EBADF; 9961999SN/A } 9971999SN/A 9982764Sstever@eecs.umich.edu#if NO_STAT64 9992064SN/A struct stat hostBuf; 10002064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 10012064SN/A#else 10022064SN/A struct stat64 hostBuf; 10031999SN/A int result = fstat64(process->sim_fd(fd), &hostBuf); 10042064SN/A#endif 10051999SN/A 10061999SN/A if (result < 0) 10072218SN/A return -errno; 10081999SN/A 10098706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 10101999SN/A 10111999SN/A return 0; 10121999SN/A} 10131999SN/A 10141999SN/A 1015378SN/A/// Target lstat() handler. 1016360SN/Atemplate <class OS> 10171450SN/ASyscallReturn 10183114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10192680Sktlim@umich.edu ThreadContext *tc) 1020360SN/A{ 1021360SN/A std::string path; 1022360SN/A 10236701Sgblack@eecs.umich.edu int index = 0; 10248852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10256701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10266701Sgblack@eecs.umich.edu return -EFAULT; 10276701Sgblack@eecs.umich.edu } 10286701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1029360SN/A 10303669Sbinkertn@umich.edu // Adjust path for current working directory 10313669Sbinkertn@umich.edu path = process->fullPath(path); 10323669Sbinkertn@umich.edu 1033360SN/A struct stat hostBuf; 1034360SN/A int result = lstat(path.c_str(), &hostBuf); 1035360SN/A 1036360SN/A if (result < 0) 10371458SN/A return -errno; 1038360SN/A 10398706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1040360SN/A 10411458SN/A return 0; 1042360SN/A} 1043360SN/A 10441999SN/A/// Target lstat64() handler. 10451999SN/Atemplate <class OS> 10461999SN/ASyscallReturn 10473114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10482680Sktlim@umich.edu ThreadContext *tc) 10491999SN/A{ 10501999SN/A std::string path; 10511999SN/A 10526701Sgblack@eecs.umich.edu int index = 0; 10538852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10546701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10556701Sgblack@eecs.umich.edu return -EFAULT; 10566701Sgblack@eecs.umich.edu } 10576701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10581999SN/A 10593669Sbinkertn@umich.edu // Adjust path for current working directory 10603669Sbinkertn@umich.edu path = process->fullPath(path); 10613669Sbinkertn@umich.edu 10622764Sstever@eecs.umich.edu#if NO_STAT64 10632064SN/A struct stat hostBuf; 10642064SN/A int result = lstat(path.c_str(), &hostBuf); 10652064SN/A#else 10661999SN/A struct stat64 hostBuf; 10671999SN/A int result = lstat64(path.c_str(), &hostBuf); 10682064SN/A#endif 10691999SN/A 10701999SN/A if (result < 0) 10711999SN/A return -errno; 10721999SN/A 10738706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10741999SN/A 10751999SN/A return 0; 10761999SN/A} 10771999SN/A 1078378SN/A/// Target fstat() handler. 1079360SN/Atemplate <class OS> 10801450SN/ASyscallReturn 10813114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10822680Sktlim@umich.edu ThreadContext *tc) 1083360SN/A{ 10846701Sgblack@eecs.umich.edu int index = 0; 10856701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 10866701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1087360SN/A 10881969SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 1089360SN/A 1090360SN/A if (fd < 0) 10911458SN/A return -EBADF; 1092360SN/A 1093360SN/A struct stat hostBuf; 1094360SN/A int result = fstat(fd, &hostBuf); 1095360SN/A 1096360SN/A if (result < 0) 10971458SN/A return -errno; 1098360SN/A 10998706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 11002021SN/A 11011458SN/A return 0; 1102360SN/A} 1103360SN/A 1104360SN/A 11051706SN/A/// Target statfs() handler. 11061706SN/Atemplate <class OS> 11071706SN/ASyscallReturn 11083114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11092680Sktlim@umich.edu ThreadContext *tc) 11101706SN/A{ 11111706SN/A std::string path; 11121706SN/A 11136701Sgblack@eecs.umich.edu int index = 0; 11148852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11156701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11166701Sgblack@eecs.umich.edu return -EFAULT; 11176701Sgblack@eecs.umich.edu } 11186701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11191706SN/A 11203669Sbinkertn@umich.edu // Adjust path for current working directory 11213669Sbinkertn@umich.edu path = process->fullPath(path); 11223669Sbinkertn@umich.edu 11231706SN/A struct statfs hostBuf; 11241706SN/A int result = statfs(path.c_str(), &hostBuf); 11251706SN/A 11261706SN/A if (result < 0) 11272218SN/A return -errno; 11281706SN/A 11298706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11301706SN/A 11311706SN/A return 0; 11321706SN/A} 11331706SN/A 11341706SN/A 11351706SN/A/// Target fstatfs() handler. 11361706SN/Atemplate <class OS> 11371706SN/ASyscallReturn 11383114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11392680Sktlim@umich.edu ThreadContext *tc) 11401706SN/A{ 11416701Sgblack@eecs.umich.edu int index = 0; 11426701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 11436701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11441706SN/A 11451706SN/A if (fd < 0) 11461706SN/A return -EBADF; 11471706SN/A 11481706SN/A struct statfs hostBuf; 11491706SN/A int result = fstatfs(fd, &hostBuf); 11501706SN/A 11511706SN/A if (result < 0) 11522218SN/A return -errno; 11531706SN/A 11548706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11551706SN/A 11561706SN/A return 0; 11571706SN/A} 11581706SN/A 11591706SN/A 11601999SN/A/// Target writev() handler. 11611999SN/Atemplate <class OS> 11621999SN/ASyscallReturn 11633114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11642680Sktlim@umich.edu ThreadContext *tc) 11651999SN/A{ 11666701Sgblack@eecs.umich.edu int index = 0; 11676701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 11681999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 11691999SN/A // doesn't map to any simulator fd: not a valid target fd 11701999SN/A return -EBADF; 11711999SN/A } 11721999SN/A 11738852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 11746701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 11756701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 11761999SN/A struct iovec hiov[count]; 11776227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 11781999SN/A typename OS::tgt_iovec tiov; 11792461SN/A 11808852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 11818852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 11828737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 11831999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 11848852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 11858852Sandreas.hansson@arm.com hiov[i].iov_len); 11861999SN/A } 11871999SN/A 11881999SN/A int result = writev(process->sim_fd(fd), hiov, count); 11891999SN/A 11906227Snate@binkert.org for (size_t i = 0; i < count; ++i) 11911999SN/A delete [] (char *)hiov[i].iov_base; 11921999SN/A 11931999SN/A if (result < 0) 11942218SN/A return -errno; 11951999SN/A 11961999SN/A return 0; 11971999SN/A} 11981999SN/A 11991999SN/A 1200378SN/A/// Target mmap() handler. 1201378SN/A/// 1202378SN/A/// We don't really handle mmap(). If the target is mmaping an 1203378SN/A/// anonymous region or /dev/zero, we can get away with doing basically 1204378SN/A/// nothing (since memory is initialized to zero and the simulator 12058324Ssteve.reinhardt@amd.com/// doesn't really check addresses anyway). 12068324Ssteve.reinhardt@amd.com/// 1207360SN/Atemplate <class OS> 12081450SN/ASyscallReturn 12093114Sgblack@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1210360SN/A{ 12116701Sgblack@eecs.umich.edu int index = 0; 12126701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12136701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 12146701Sgblack@eecs.umich.edu index++; // int prot = p->getSyscallArg(tc, index); 12156701Sgblack@eecs.umich.edu int flags = p->getSyscallArg(tc, index); 12168324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 121710486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1218360SN/A 12199008Sgblack@eecs.umich.edu if (length > 0x100000000ULL) 12209008Sgblack@eecs.umich.edu warn("mmap length argument %#x is unreasonably large.\n", length); 12219008Sgblack@eecs.umich.edu 12228324Ssteve.reinhardt@amd.com if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 12238324Ssteve.reinhardt@amd.com Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd); 12248324Ssteve.reinhardt@amd.com if (!fd_map || fd_map->fd < 0) { 12258324Ssteve.reinhardt@amd.com warn("mmap failing: target fd %d is not valid\n", tgt_fd); 12268324Ssteve.reinhardt@amd.com return -EBADF; 12278324Ssteve.reinhardt@amd.com } 12288324Ssteve.reinhardt@amd.com 12298324Ssteve.reinhardt@amd.com if (fd_map->filename != "/dev/zero") { 12308324Ssteve.reinhardt@amd.com // This is very likely broken, but leave a warning here 12318324Ssteve.reinhardt@amd.com // (rather than panic) in case /dev/zero is known by 12328324Ssteve.reinhardt@amd.com // another name on some platform 12338324Ssteve.reinhardt@amd.com warn("allowing mmap of file %s; mmap not supported on files" 12348324Ssteve.reinhardt@amd.com " other than /dev/zero\n", fd_map->filename); 12358324Ssteve.reinhardt@amd.com } 12368324Ssteve.reinhardt@amd.com } 12375877Shsul@eecs.umich.edu 123810486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 123910486Stjablin@gmail.com 124010318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes) != 0 || 124110486Stjablin@gmail.com (offset % TheISA::PageBytes) != 0) { 12422544SN/A warn("mmap failing: arguments not page-aligned: " 124310486Stjablin@gmail.com "start 0x%x offset 0x%x", 124410486Stjablin@gmail.com start, offset); 12452544SN/A return -EINVAL; 1246360SN/A } 1247360SN/A 12488600Ssteve.reinhardt@amd.com // are we ok with clobbering existing mappings? only set this to 12498600Ssteve.reinhardt@amd.com // true if the user has been warned. 12508600Ssteve.reinhardt@amd.com bool clobber = false; 12518600Ssteve.reinhardt@amd.com 12528600Ssteve.reinhardt@amd.com // try to use the caller-provided address if there is one 12538600Ssteve.reinhardt@amd.com bool use_provided_address = (start != 0); 12548600Ssteve.reinhardt@amd.com 12558600Ssteve.reinhardt@amd.com if (use_provided_address) { 12568600Ssteve.reinhardt@amd.com // check to see if the desired address is already in use 12578600Ssteve.reinhardt@amd.com if (!p->pTable->isUnmapped(start, length)) { 12588600Ssteve.reinhardt@amd.com // there are existing mappings in the desired range 12598600Ssteve.reinhardt@amd.com // whether we clobber them or not depends on whether the caller 12608600Ssteve.reinhardt@amd.com // specified MAP_FIXED 12618600Ssteve.reinhardt@amd.com if (flags & OS::TGT_MAP_FIXED) { 126210485SMichael.Adler@intel.com // MAP_FIXED specified: map attempt fails 126310485SMichael.Adler@intel.com return -EINVAL; 12648600Ssteve.reinhardt@amd.com } else { 12658600Ssteve.reinhardt@amd.com // MAP_FIXED not specified: ignore suggested start address 12668600Ssteve.reinhardt@amd.com warn("mmap: ignoring suggested map address 0x%x\n", start); 12678600Ssteve.reinhardt@amd.com use_provided_address = false; 12688600Ssteve.reinhardt@amd.com } 12698600Ssteve.reinhardt@amd.com } 12702544SN/A } 12712544SN/A 12728600Ssteve.reinhardt@amd.com if (!use_provided_address) { 12738600Ssteve.reinhardt@amd.com // no address provided, or provided address unusable: 12748600Ssteve.reinhardt@amd.com // pick next address from our "mmap region" 12758600Ssteve.reinhardt@amd.com if (OS::mmapGrowsDown()) { 12768600Ssteve.reinhardt@amd.com start = p->mmap_end - length; 12778600Ssteve.reinhardt@amd.com p->mmap_end = start; 12788600Ssteve.reinhardt@amd.com } else { 12798600Ssteve.reinhardt@amd.com start = p->mmap_end; 12808600Ssteve.reinhardt@amd.com p->mmap_end += length; 12818600Ssteve.reinhardt@amd.com } 12826672Sgblack@eecs.umich.edu } 12838600Ssteve.reinhardt@amd.com 12848601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 12852544SN/A 12861458SN/A return start; 1287360SN/A} 1288360SN/A 1289378SN/A/// Target getrlimit() handler. 1290360SN/Atemplate <class OS> 12911450SN/ASyscallReturn 12923114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12932680Sktlim@umich.edu ThreadContext *tc) 1294360SN/A{ 12956701Sgblack@eecs.umich.edu int index = 0; 12966701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 12976701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1298360SN/A 1299360SN/A switch (resource) { 13002064SN/A case OS::TGT_RLIMIT_STACK: 13015877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 13022064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 13038737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 13048737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 13052064SN/A break; 1306360SN/A 13075877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 13085877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 13095877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 13108737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 13118737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 13125877Shsul@eecs.umich.edu break; 13135877Shsul@eecs.umich.edu 13142064SN/A default: 13152064SN/A std::cerr << "getrlimitFunc: unimplemented resource " << resource 13162064SN/A << std::endl; 13172064SN/A abort(); 13182064SN/A break; 1319360SN/A } 1320360SN/A 13218706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 13221458SN/A return 0; 1323360SN/A} 1324360SN/A 1325378SN/A/// Target gettimeofday() handler. 1326360SN/Atemplate <class OS> 13271450SN/ASyscallReturn 13283114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13292680Sktlim@umich.edu ThreadContext *tc) 1330360SN/A{ 13316701Sgblack@eecs.umich.edu int index = 0; 13326701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1333360SN/A 1334360SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1335360SN/A tp->tv_sec += seconds_since_epoch; 13366109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 13376109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1338360SN/A 13398706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1340360SN/A 13411458SN/A return 0; 1342360SN/A} 1343360SN/A 1344360SN/A 13451999SN/A/// Target utimes() handler. 13461999SN/Atemplate <class OS> 13471999SN/ASyscallReturn 13483114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13492680Sktlim@umich.edu ThreadContext *tc) 13501999SN/A{ 13511999SN/A std::string path; 13521999SN/A 13536701Sgblack@eecs.umich.edu int index = 0; 13548852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 13556701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 13566701Sgblack@eecs.umich.edu return -EFAULT; 13576701Sgblack@eecs.umich.edu } 13581999SN/A 13596701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 13606701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 13618706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 13621999SN/A 13631999SN/A struct timeval hostTimeval[2]; 13641999SN/A for (int i = 0; i < 2; ++i) 13651999SN/A { 13668737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 13678737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 13681999SN/A } 13693669Sbinkertn@umich.edu 13703669Sbinkertn@umich.edu // Adjust path for current working directory 13713669Sbinkertn@umich.edu path = process->fullPath(path); 13723669Sbinkertn@umich.edu 13731999SN/A int result = utimes(path.c_str(), hostTimeval); 13741999SN/A 13751999SN/A if (result < 0) 13761999SN/A return -errno; 13771999SN/A 13781999SN/A return 0; 13791999SN/A} 1380378SN/A/// Target getrusage() function. 1381360SN/Atemplate <class OS> 13821450SN/ASyscallReturn 13833114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13842680Sktlim@umich.edu ThreadContext *tc) 1385360SN/A{ 13866701Sgblack@eecs.umich.edu int index = 0; 13876701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 13886701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1389360SN/A 13903670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 13913670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1392360SN/A rup->ru_stime.tv_sec = 0; 1393360SN/A rup->ru_stime.tv_usec = 0; 1394360SN/A rup->ru_maxrss = 0; 1395360SN/A rup->ru_ixrss = 0; 1396360SN/A rup->ru_idrss = 0; 1397360SN/A rup->ru_isrss = 0; 1398360SN/A rup->ru_minflt = 0; 1399360SN/A rup->ru_majflt = 0; 1400360SN/A rup->ru_nswap = 0; 1401360SN/A rup->ru_inblock = 0; 1402360SN/A rup->ru_oublock = 0; 1403360SN/A rup->ru_msgsnd = 0; 1404360SN/A rup->ru_msgrcv = 0; 1405360SN/A rup->ru_nsignals = 0; 1406360SN/A rup->ru_nvcsw = 0; 1407360SN/A rup->ru_nivcsw = 0; 1408360SN/A 14093670Sbinkertn@umich.edu switch (who) { 14103670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 14113670Sbinkertn@umich.edu getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 14128737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 14138737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 14143670Sbinkertn@umich.edu break; 14153670Sbinkertn@umich.edu 14163670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 14173670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 14183670Sbinkertn@umich.edu break; 14193670Sbinkertn@umich.edu 14203670Sbinkertn@umich.edu default: 14213670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 14223670Sbinkertn@umich.edu // plow ahead 14233670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 14243670Sbinkertn@umich.edu who); 14253670Sbinkertn@umich.edu } 14263670Sbinkertn@umich.edu 14278706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1428360SN/A 14291458SN/A return 0; 1430360SN/A} 1431360SN/A 14326683Stjones1@inf.ed.ac.uk/// Target times() function. 14336683Stjones1@inf.ed.ac.uktemplate <class OS> 14346683Stjones1@inf.ed.ac.ukSyscallReturn 14356683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14366683Stjones1@inf.ed.ac.uk ThreadContext *tc) 14376683Stjones1@inf.ed.ac.uk{ 14386701Sgblack@eecs.umich.edu int index = 0; 14396701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 14406683Stjones1@inf.ed.ac.uk 14416683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 14427823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 14436683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 14446683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 14456683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 14466683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 14476683Stjones1@inf.ed.ac.uk 14486683Stjones1@inf.ed.ac.uk // Convert to host endianness 14498737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 14506683Stjones1@inf.ed.ac.uk 14516683Stjones1@inf.ed.ac.uk // Write back 14528706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 14536683Stjones1@inf.ed.ac.uk 14546683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 14556683Stjones1@inf.ed.ac.uk return clocks; 14566683Stjones1@inf.ed.ac.uk} 14572553SN/A 14586684Stjones1@inf.ed.ac.uk/// Target time() function. 14596684Stjones1@inf.ed.ac.uktemplate <class OS> 14606684Stjones1@inf.ed.ac.ukSyscallReturn 14616684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14626684Stjones1@inf.ed.ac.uk ThreadContext *tc) 14636684Stjones1@inf.ed.ac.uk{ 14646684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 14656684Stjones1@inf.ed.ac.uk getElapsedTime(sec, usec); 14666684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 14676684Stjones1@inf.ed.ac.uk 14686701Sgblack@eecs.umich.edu int index = 0; 14696701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 14706684Stjones1@inf.ed.ac.uk if(taddr != 0) { 14716684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 14728737Skoansin.tan@gmail.com t = TheISA::htog(t); 14738852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 14748852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 14756684Stjones1@inf.ed.ac.uk } 14766684Stjones1@inf.ed.ac.uk return sec; 14776684Stjones1@inf.ed.ac.uk} 14782553SN/A 14792553SN/A 14801354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1481