syscall_emul.hh revision 10485
1360SN/A/* 21458SN/A * Copyright (c) 2012-2013 ARM Limited 3360SN/A * All rights reserved 4360SN/A * 5360SN/A * The license below extends only to copyright in the software and shall 6360SN/A * not be construed as granting a license to any other intellectual 7360SN/A * property including but not limited to intellectual property relating 8360SN/A * to a hardware implementation of the functionality of the software 9360SN/A * licensed hereunder. You may use the software subject to the license 10360SN/A * terms below provided that you ensure that this notice is replicated 11360SN/A * unmodified and in its entirety in all distributions of the software, 12360SN/A * modified or unmodified, in source code or in binary form. 13360SN/A * 14360SN/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. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 292665Ssaidi@eecs.umich.edu * "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 321354SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 331354SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 352764Sstever@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 362764Sstever@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 372064SN/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. 39360SN/A * 40360SN/A * Authors: Steve Reinhardt 41360SN/A * Kevin Lim 42360SN/A */ 43360SN/A 441354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 45360SN/A#define __SIM_SYSCALL_EMUL_HH__ 461809SN/A 475543Ssaidi@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 481809SN/A defined(__FreeBSD__) || defined(__CYGWIN__) || \ 493113Sgblack@eecs.umich.edu defined(__NetBSD__)) 503113Sgblack@eecs.umich.edu 511999SN/A/// 52360SN/A/// @file syscall_emul.hh 535543Ssaidi@eecs.umich.edu/// 542474SN/A/// This file defines objects used to emulate syscalls from the target 555543Ssaidi@eecs.umich.edu/// application on the host machine. 562462SN/A 571354SN/A#ifdef __CYGWIN32__ 582474SN/A#include <sys/fcntl.h> // for O_BINARY 592680Sktlim@umich.edu#endif 602474SN/A#include <sys/stat.h> 612474SN/A#include <sys/time.h> 621354SN/A#include <sys/uio.h> 63360SN/A#include <fcntl.h> 64360SN/A 65360SN/A#include <cerrno> 66360SN/A#include <string> 67360SN/A 68360SN/A#include "base/chunk_generator.hh" 69360SN/A#include "base/intmath.hh" // for RoundUp 70360SN/A#include "base/misc.hh" 71378SN/A#include "base/trace.hh" 721450SN/A#include "base/types.hh" 733114Sgblack@eecs.umich.edu#include "config/the_isa.hh" 74360SN/A#include "cpu/base.hh" 755543Ssaidi@eecs.umich.edu#include "cpu/thread_context.hh" 765543Ssaidi@eecs.umich.edu#include "debug/SyscallVerbose.hh" 775543Ssaidi@eecs.umich.edu#include "mem/page_table.hh" 78360SN/A#include "mem/se_translating_port_proxy.hh" 79360SN/A#include "sim/byteswap.hh" 80360SN/A#include "sim/process.hh" 81360SN/A#include "sim/syscallreturn.hh" 82360SN/A#include "sim/system.hh" 832680Sktlim@umich.edu 84360SN/A/// 85360SN/A/// System call descriptor. 86360SN/A/// 87360SN/Aclass SyscallDesc { 88360SN/A 89360SN/A public: 90360SN/A 91360SN/A /// Typedef for target syscall handler functions. 92360SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 93360SN/A LiveProcess *, ThreadContext *); 94360SN/A 953114Sgblack@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 96360SN/A FuncPtr funcPtr; //!< Pointer to emulation function. 97360SN/A 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 103360SN/A /// 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. 115360SN/A void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 116360SN/A}; 1172400SN/A 118360SN/A 1192461SN/Aclass BaseBufferArg { 1205543Ssaidi@eecs.umich.edu 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]; 1262400SN/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 1282461SN/A // introduce any random junk into the simulated address space 1295543Ssaidi@eecs.umich.edu 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 // 137360SN/A virtual bool copyIn(SETranslatingPortProxy &memproxy) 138360SN/A { 139360SN/A memproxy.readBlob(addr, bufPtr, size); 140360SN/A return true; // no EFAULT detection for now 141360SN/A } 142360SN/A 1435543Ssaidi@eecs.umich.edu // 144360SN/A // copy data out of simulator space (write to target memory) 145360SN/A // 146360SN/A virtual bool copyOut(SETranslatingPortProxy &memproxy) 147360SN/A { 148360SN/A memproxy.writeBlob(addr, bufPtr, size); 149360SN/A 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{ 1615543Ssaidi@eecs.umich.edu public: 1625543Ssaidi@eecs.umich.edu BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { } 163502SN/A 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) 175378SN/A { } 1761706SN/A 1773114Sgblack@eecs.umich.edu // type case 178378SN/A operator T*() { return (T *)bufPtr; } 179378SN/A 180378SN/A // dereference operators 181378SN/A T &operator*() { return *((T *)bufPtr); } 182378SN/A T* operator->() { return (T *)bufPtr; } 1831706SN/A T &operator[](int i) { return ((T *)bufPtr)[i]; } 1843114Sgblack@eecs.umich.edu}; 185360SN/A 186378SN/A////////////////////////////////////////////////////////////////////// 1871706SN/A// 1883114Sgblack@eecs.umich.edu// The following emulation functions are generic enough that they 189378SN/A// don't need to be recompiled for different emulated OS's. They are 190378SN/A// defined in sim/syscall_emul.cc. 1911706SN/A// 1923114Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////// 193378SN/A 1945748SSteve.Reinhardt@amd.com 1955748SSteve.Reinhardt@amd.com/// Handler for unimplemented syscalls that we haven't thought about. 1965748SSteve.Reinhardt@amd.comSyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 197378SN/A LiveProcess *p, ThreadContext *tc); 198378SN/A 1991706SN/A/// Handler for unimplemented syscalls that we never intend to 2003114Sgblack@eecs.umich.edu/// 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); 205378SN/ASyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num, 206378SN/A LiveProcess *p, ThreadContext *tc); 2071706SN/A 2083114Sgblack@eecs.umich.edu/// Target exit() handler: terminate current context. 209378SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 210378SN/A LiveProcess *p, ThreadContext *tc); 2111706SN/A 2123114Sgblack@eecs.umich.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 213378SN/ASyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 2144118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2154118Sgblack@eecs.umich.edu 2164118Sgblack@eecs.umich.edu/// Target getpagesize() handler. 2174118Sgblack@eecs.umich.eduSyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 218378SN/A LiveProcess *p, ThreadContext *tc); 2191706SN/A 2203114Sgblack@eecs.umich.edu/// Target brk() handler: set brk address. 221378SN/ASyscallReturn brkFunc(SyscallDesc *desc, int num, 222378SN/A LiveProcess *p, ThreadContext *tc); 2231706SN/A 2243114Sgblack@eecs.umich.edu/// Target close() handler. 225360SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 2265513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2275513SMichael.Adler@intel.com 2285513SMichael.Adler@intel.com/// Target read() handler. 2295513SMichael.Adler@intel.comSyscallReturn readFunc(SyscallDesc *desc, int num, 2305513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2315513SMichael.Adler@intel.com 2325513SMichael.Adler@intel.com/// Target write() handler. 2335513SMichael.Adler@intel.comSyscallReturn writeFunc(SyscallDesc *desc, int num, 234511SN/A LiveProcess *p, ThreadContext *tc); 2351706SN/A 2363114Sgblack@eecs.umich.edu/// Target lseek() handler. 237511SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 2385513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2395513SMichael.Adler@intel.com 2405513SMichael.Adler@intel.com/// Target _llseek() handler. 2415513SMichael.Adler@intel.comSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 242511SN/A LiveProcess *p, ThreadContext *tc); 2431706SN/A 2443114Sgblack@eecs.umich.edu/// Target munmap() handler. 2451706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2461706SN/A LiveProcess *p, ThreadContext *tc); 2471706SN/A 2481706SN/A/// Target gethostname() handler. 2493114Sgblack@eecs.umich.eduSyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2501706SN/A LiveProcess *p, ThreadContext *tc); 2511706SN/A 2521706SN/A/// Target getcwd() handler. 2531706SN/ASyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2543114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2551706SN/A 256511SN/A/// Target readlink() handler. 2575513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2585513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc, 2595513SMichael.Adler@intel.com int index = 0); 2605513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2615513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2621999SN/A 2631999SN/A/// Target unlink() handler. 2643114Sgblack@eecs.umich.eduSyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2651999SN/A LiveProcess *p, ThreadContext *tc); 2661999SN/A 2671999SN/A/// Target mkdir() handler. 2681999SN/ASyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2693114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2701999SN/A 2713079Sstever@eecs.umich.edu/// Target rename() handler. 2723079Sstever@eecs.umich.eduSyscallReturn renameFunc(SyscallDesc *desc, int num, 2733114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2743079Sstever@eecs.umich.edu 2752093SN/A 2762093SN/A/// Target truncate() handler. 2773114Sgblack@eecs.umich.eduSyscallReturn truncateFunc(SyscallDesc *desc, int num, 2782093SN/A LiveProcess *p, ThreadContext *tc); 2792687Sksewell@umich.edu 2802687Sksewell@umich.edu 2813114Sgblack@eecs.umich.edu/// Target ftruncate() handler. 2822687Sksewell@umich.eduSyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2832238SN/A LiveProcess *p, ThreadContext *tc); 2842238SN/A 2853114Sgblack@eecs.umich.edu 2862238SN/A/// Target truncate64() handler. 2872238SN/ASyscallReturn truncate64Func(SyscallDesc *desc, int num, 2882238SN/A LiveProcess *p, ThreadContext *tc); 2893114Sgblack@eecs.umich.edu 2902238SN/A/// Target ftruncate64() handler. 2912238SN/ASyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2922238SN/A LiveProcess *p, ThreadContext *tc); 2933114Sgblack@eecs.umich.edu 2942238SN/A 2952238SN/A/// Target umask() handler. 2962238SN/ASyscallReturn umaskFunc(SyscallDesc *desc, int num, 2973114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2982238SN/A 2992238SN/A 3002238SN/A/// Target chown() handler. 3013114Sgblack@eecs.umich.eduSyscallReturn chownFunc(SyscallDesc *desc, int num, 3022238SN/A LiveProcess *p, ThreadContext *tc); 3032238SN/A 3042238SN/A 3053114Sgblack@eecs.umich.edu/// Target fchown() handler. 3062238SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 3072238SN/A LiveProcess *p, ThreadContext *tc); 3082238SN/A 3093114Sgblack@eecs.umich.edu/// Target dup() handler. 3102238SN/ASyscallReturn dupFunc(SyscallDesc *desc, int num, 3112238SN/A LiveProcess *process, ThreadContext *tc); 3122238SN/A 3132238SN/A/// Target fnctl() handler. 3142238SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 3152238SN/A LiveProcess *process, ThreadContext *tc); 3163114Sgblack@eecs.umich.edu 3172238SN/A/// Target fcntl64() handler. 3182238SN/ASyscallReturn fcntl64Func(SyscallDesc *desc, int num, 3192238SN/A LiveProcess *process, ThreadContext *tc); 3203114Sgblack@eecs.umich.edu 3212238SN/A/// Target setuid() handler. 3222238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 3232238SN/A LiveProcess *p, ThreadContext *tc); 3243114Sgblack@eecs.umich.edu 3252238SN/A/// Target getpid() handler. 3262238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 3272238SN/A LiveProcess *p, ThreadContext *tc); 3283114Sgblack@eecs.umich.edu 3292238SN/A/// Target getuid() handler. 3302238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 3311354SN/A LiveProcess *p, ThreadContext *tc); 3321354SN/A 3331354SN/A/// Target getgid() handler. 3341354SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 3351354SN/A LiveProcess *p, ThreadContext *tc); 3361354SN/A 3371354SN/A/// Target getppid() handler. 3381354SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 3391354SN/A LiveProcess *p, ThreadContext *tc); 3401354SN/A 3411354SN/A/// Target geteuid() handler. 3421354SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3431354SN/A LiveProcess *p, ThreadContext *tc); 3441354SN/A 3451609SN/A/// Target getegid() handler. 3461354SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3471354SN/A LiveProcess *p, ThreadContext *tc); 3481354SN/A 3491354SN/A/// Target clone() handler. 350360SN/ASyscallReturn cloneFunc(SyscallDesc *desc, int num, 351360SN/A LiveProcess *p, ThreadContext *tc); 352360SN/A 353360SN/A/// Target access() handler 354360SN/ASyscallReturn accessFunc(SyscallDesc *desc, int num, 355360SN/A LiveProcess *p, ThreadContext *tc); 356360SN/ASyscallReturn accessFunc(SyscallDesc *desc, int num, 3573113Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc, 3583113Sgblack@eecs.umich.edu int index); 3593113Sgblack@eecs.umich.edu 3603113Sgblack@eecs.umich.edu/// Futex system call 3613113Sgblack@eecs.umich.edu/// Implemented by Daniel Sanchez 3623113Sgblack@eecs.umich.edu/// Used by printf's in multi-threaded apps 3633113Sgblack@eecs.umich.edutemplate <class OS> 3643113Sgblack@eecs.umich.eduSyscallReturn 3653113Sgblack@eecs.umich.edufutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3663113Sgblack@eecs.umich.edu ThreadContext *tc) 3673113Sgblack@eecs.umich.edu{ 3683113Sgblack@eecs.umich.edu int index_uaddr = 0; 3693113Sgblack@eecs.umich.edu int index_op = 1; 3703113Sgblack@eecs.umich.edu int index_val = 2; 3713113Sgblack@eecs.umich.edu int index_timeout = 3; 3723113Sgblack@eecs.umich.edu 3734189Sgblack@eecs.umich.edu uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3744189Sgblack@eecs.umich.edu int op = process->getSyscallArg(tc, index_op); 3753113Sgblack@eecs.umich.edu int val = process->getSyscallArg(tc, index_val); 3763113Sgblack@eecs.umich.edu uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3773113Sgblack@eecs.umich.edu 3783113Sgblack@eecs.umich.edu std::map<uint64_t, std::list<ThreadContext *> * > 3793113Sgblack@eecs.umich.edu &futex_map = tc->getSystemPtr()->futexMap; 3803113Sgblack@eecs.umich.edu 3813113Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3823277Sgblack@eecs.umich.edu uaddr, op, val); 3835515SMichael.Adler@intel.com 3845515SMichael.Adler@intel.com op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3855515SMichael.Adler@intel.com 3865515SMichael.Adler@intel.com if (op == OS::TGT_FUTEX_WAIT) { 3875515SMichael.Adler@intel.com if (timeout != 0) { 3883277Sgblack@eecs.umich.edu warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3893277Sgblack@eecs.umich.edu "we'll wait indefinitely"); 3903277Sgblack@eecs.umich.edu } 3913277Sgblack@eecs.umich.edu 3923277Sgblack@eecs.umich.edu uint8_t *buf = new uint8_t[sizeof(int)]; 3933277Sgblack@eecs.umich.edu tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3943277Sgblack@eecs.umich.edu int mem_val = *((int *)buf); 3953113Sgblack@eecs.umich.edu delete buf; 3963113Sgblack@eecs.umich.edu 3973113Sgblack@eecs.umich.edu if(val != mem_val) { 3983113Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3993113Sgblack@eecs.umich.edu "expected: %d\n", mem_val, val); 4003113Sgblack@eecs.umich.edu return -OS::TGT_EWOULDBLOCK; 4013113Sgblack@eecs.umich.edu } 4023114Sgblack@eecs.umich.edu 4033113Sgblack@eecs.umich.edu // Queue the thread context 4043114Sgblack@eecs.umich.edu std::list<ThreadContext *> * tcWaitList; 4053113Sgblack@eecs.umich.edu if (futex_map.count(uaddr)) { 4063114Sgblack@eecs.umich.edu tcWaitList = futex_map.find(uaddr)->second; 4073113Sgblack@eecs.umich.edu } else { 4084061Sgblack@eecs.umich.edu tcWaitList = new std::list<ThreadContext *>(); 4094061Sgblack@eecs.umich.edu futex_map.insert(std::pair< uint64_t, 4104061Sgblack@eecs.umich.edu std::list<ThreadContext *> * >(uaddr, tcWaitList)); 4113113Sgblack@eecs.umich.edu } 4123113Sgblack@eecs.umich.edu tcWaitList->push_back(tc); 4133113Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 4143113Sgblack@eecs.umich.edu "thread context\n"); 4153113Sgblack@eecs.umich.edu tc->suspend(); 4163113Sgblack@eecs.umich.edu return 0; 4173113Sgblack@eecs.umich.edu } else if (op == OS::TGT_FUTEX_WAKE){ 4183113Sgblack@eecs.umich.edu int wokenUp = 0; 4193113Sgblack@eecs.umich.edu std::list<ThreadContext *> * tcWaitList; 4203113Sgblack@eecs.umich.edu if (futex_map.count(uaddr)) { 4213113Sgblack@eecs.umich.edu tcWaitList = futex_map.find(uaddr)->second; 4224189Sgblack@eecs.umich.edu while (tcWaitList->size() > 0 && wokenUp < val) { 4234189Sgblack@eecs.umich.edu tcWaitList->front()->activate(); 4243113Sgblack@eecs.umich.edu tcWaitList->pop_front(); 4253113Sgblack@eecs.umich.edu wokenUp++; 4263113Sgblack@eecs.umich.edu } 4273113Sgblack@eecs.umich.edu if(tcWaitList->empty()) { 4283113Sgblack@eecs.umich.edu futex_map.erase(uaddr); 4293113Sgblack@eecs.umich.edu delete tcWaitList; 4303113Sgblack@eecs.umich.edu } 4313113Sgblack@eecs.umich.edu } 4323113Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 4333113Sgblack@eecs.umich.edu "thread contexts\n", wokenUp); 4343113Sgblack@eecs.umich.edu return wokenUp; 4353113Sgblack@eecs.umich.edu } else { 4363113Sgblack@eecs.umich.edu warn("sys_futex: op %d is not implemented, just returning...", op); 4373113Sgblack@eecs.umich.edu return 0; 4383113Sgblack@eecs.umich.edu } 4393113Sgblack@eecs.umich.edu 4403113Sgblack@eecs.umich.edu} 4413113Sgblack@eecs.umich.edu 4423113Sgblack@eecs.umich.edu/// Target getdents() handler. 4433113Sgblack@eecs.umich.eduSyscallReturn getdentsFunc(SyscallDesc *desc, int num, 4443113Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4453113Sgblack@eecs.umich.edu 4463113Sgblack@eecs.umich.edu/// Target getdents64() handler. 4473113Sgblack@eecs.umich.eduSyscallReturn getdents64Func(SyscallDesc *desc, int num, 4483113Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4493113Sgblack@eecs.umich.edu 4503113Sgblack@eecs.umich.edu 4513113Sgblack@eecs.umich.edu/// Pseudo Funcs - These functions use a different return convension, 4523113Sgblack@eecs.umich.edu/// returning a second value in a register other than the normal return register 4533113Sgblack@eecs.umich.eduSyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 4543113Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4553113Sgblack@eecs.umich.edu 4563113Sgblack@eecs.umich.edu/// Target getpidPseudo() handler. 4573113Sgblack@eecs.umich.eduSyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4583113Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4593113Sgblack@eecs.umich.edu 4603113Sgblack@eecs.umich.edu/// Target getuidPseudo() handler. 4613113Sgblack@eecs.umich.eduSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 462378SN/A LiveProcess *p, ThreadContext *tc); 463378SN/A 464378SN/A/// Target getgidPseudo() handler. 465360SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4661450SN/A LiveProcess *p, ThreadContext *tc); 4673114Sgblack@eecs.umich.edu 4682680Sktlim@umich.edu 469360SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4705958Sgblack@eecs.umich.educonst int one_million = 1000000; 4715958Sgblack@eecs.umich.edu 472360SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4731969SN/A/// by my reckoning. We want to keep this a constant (not use the 474360SN/A/// real-world time) to keep simulations repeatable. 475360SN/Aconst unsigned seconds_since_epoch = 1000000000; 476360SN/A 4771458SN/A/// Helper function to convert current elapsed time to seconds and 478360SN/A/// microseconds. 479360SN/Atemplate <class T1, class T2> 480360SN/Avoid 4814131Sbinkertn@umich.edugetElapsedTime(T1 &sec, T2 &usec) 4824131Sbinkertn@umich.edu{ 4834131Sbinkertn@umich.edu int elapsed_usecs = curTick() / SimClock::Int::us; 4844131Sbinkertn@umich.edu sec = elapsed_usecs / one_million; 4854131Sbinkertn@umich.edu usec = elapsed_usecs % one_million; 4864131Sbinkertn@umich.edu} 4874131Sbinkertn@umich.edu 4884131Sbinkertn@umich.edu////////////////////////////////////////////////////////////////////// 4891458SN/A// 490360SN/A// The following emulation functions are generic, but need to be 491360SN/A// templated to account for differences in types, constants, etc. 4921706SN/A// 4932680Sktlim@umich.edu////////////////////////////////////////////////////////////////////// 494360SN/A 495360SN/A#if NO_STAT64 496360SN/A typedef struct stat hst_stat; 497378SN/A typedef struct stat hst_stat64; 498360SN/A#else 4991450SN/A typedef struct stat hst_stat; 5003114Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 5012680Sktlim@umich.edu#endif 502360SN/A 503360SN/A//// Helper function to convert a host stat buffer to a target stat 504360SN/A//// buffer. Also copies the target buffer out to the simulated 5055958Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 5061458SN/A 507360SN/Atemplate <typename target_stat, typename host_stat> 508360SN/Astatic void 509360SN/AconvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 510360SN/A{ 5111706SN/A using namespace TheISA; 5121458SN/A 513360SN/A if (fakeTTY) 514360SN/A tgt->st_dev = 0xA; 5155958Sgblack@eecs.umich.edu else 5165958Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 517360SN/A tgt->st_dev = TheISA::htog(tgt->st_dev); 518360SN/A tgt->st_ino = host->st_ino; 519360SN/A tgt->st_ino = TheISA::htog(tgt->st_ino); 520360SN/A tgt->st_mode = host->st_mode; 521360SN/A if (fakeTTY) { 522360SN/A // Claim to be a character device 523360SN/A tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 524360SN/A tgt->st_mode |= S_IFCHR; // Set S_IFCHR 525360SN/A } 526360SN/A tgt->st_mode = TheISA::htog(tgt->st_mode); 527360SN/A tgt->st_nlink = host->st_nlink; 528360SN/A tgt->st_nlink = TheISA::htog(tgt->st_nlink); 5291706SN/A tgt->st_uid = host->st_uid; 530360SN/A tgt->st_uid = TheISA::htog(tgt->st_uid); 531360SN/A tgt->st_gid = host->st_gid; 532360SN/A tgt->st_gid = TheISA::htog(tgt->st_gid); 533360SN/A if (fakeTTY) 534360SN/A tgt->st_rdev = 0x880d; 5353669Sbinkertn@umich.edu else 5363669Sbinkertn@umich.edu tgt->st_rdev = host->st_rdev; 5373669Sbinkertn@umich.edu tgt->st_rdev = TheISA::htog(tgt->st_rdev); 5381706SN/A tgt->st_size = host->st_size; 5391706SN/A tgt->st_size = TheISA::htog(tgt->st_size); 5405795Ssaidi@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5415795Ssaidi@eecs.umich.edu tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5425795Ssaidi@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5435795Ssaidi@eecs.umich.edu tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5445795Ssaidi@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5455795Ssaidi@eecs.umich.edu tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5465795Ssaidi@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5475795Ssaidi@eecs.umich.edu // consistently across different hosts. 5485795Ssaidi@eecs.umich.edu tgt->st_blksize = 0x2000; 5495795Ssaidi@eecs.umich.edu tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5505795Ssaidi@eecs.umich.edu tgt->st_blocks = host->st_blocks; 551360SN/A tgt->st_blocks = TheISA::htog(tgt->st_blocks); 552360SN/A} 553360SN/A 554360SN/A// Same for stat64 5551999SN/A 5561999SN/Atemplate <typename target_stat, typename host_stat64> 5571999SN/Astatic void 5583114Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5592680Sktlim@umich.edu{ 5601999SN/A using namespace TheISA; 5611999SN/A 5621999SN/A convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5635958Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5641999SN/A tgt->st_atime_nsec = host->st_atime_nsec; 5651999SN/A tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5665958Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5671999SN/A tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5681999SN/A tgt->st_ctime_nsec = host->st_ctime_nsec; 5691999SN/A tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5701999SN/A#else 5711999SN/A tgt->st_atime_nsec = 0; 5723669Sbinkertn@umich.edu tgt->st_mtime_nsec = 0; 5733669Sbinkertn@umich.edu tgt->st_ctime_nsec = 0; 5743669Sbinkertn@umich.edu#endif 5751999SN/A} 5761999SN/A 5771999SN/A//Here are a couple convenience functions 5782218SN/Atemplate<class OS> 5791999SN/Astatic void 5801999SN/AcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5811999SN/A hst_stat *host, bool fakeTTY = false) 5821999SN/A{ 5831999SN/A typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5841999SN/A tgt_stat_buf tgt(addr); 5851999SN/A convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5861999SN/A tgt.copyOut(mem); 5873114Sgblack@eecs.umich.edu} 5882680Sktlim@umich.edu 5891999SN/Atemplate<class OS> 5905958Sgblack@eecs.umich.edustatic void 5911999SN/AcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5921999SN/A hst_stat64 *host, bool fakeTTY = false) 5931999SN/A{ 5941999SN/A typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5951999SN/A tgt_stat_buf tgt(addr); 5965958Sgblack@eecs.umich.edu convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5971999SN/A tgt.copyOut(mem); 5981999SN/A} 5991999SN/A 6001999SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 6011999SN/A/// only to find out if their stdout is a tty, to determine whether to 6021999SN/A/// do line or block buffering. We always claim that output fds are 6031999SN/A/// not TTYs to provide repeatable results. 6041999SN/Atemplate <class OS> 6052218SN/ASyscallReturn 6061999SN/AioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6071999SN/A ThreadContext *tc) 6081999SN/A{ 6091999SN/A int index = 0; 6105877Shsul@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 6115877Shsul@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 6125877Shsul@eecs.umich.edu 6135877Shsul@eecs.umich.edu DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 6145877Shsul@eecs.umich.edu 6155958Sgblack@eecs.umich.edu if (fd < 0 || process->sim_fd(fd) < 0) { 6165958Sgblack@eecs.umich.edu // doesn't map to any simulator fd: not a valid target fd 6175958Sgblack@eecs.umich.edu return -EBADF; 6185958Sgblack@eecs.umich.edu } 6195877Shsul@eecs.umich.edu 6205877Shsul@eecs.umich.edu if (OS::isTtyReq(req)) { 6215877Shsul@eecs.umich.edu return -ENOTTY; 6225877Shsul@eecs.umich.edu } 6235877Shsul@eecs.umich.edu 6245877Shsul@eecs.umich.edu warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 6255877Shsul@eecs.umich.edu fd, req, tc->pcState()); 6265877Shsul@eecs.umich.edu return -ENOTTY; 6275877Shsul@eecs.umich.edu} 6285877Shsul@eecs.umich.edu 6295877Shsul@eecs.umich.edutemplate <class OS> 6305877Shsul@eecs.umich.edustatic SyscallReturn 6315877Shsul@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6325877Shsul@eecs.umich.edu ThreadContext *tc, int index) 6335877Shsul@eecs.umich.edu{ 6345877Shsul@eecs.umich.edu std::string path; 6355877Shsul@eecs.umich.edu 6365877Shsul@eecs.umich.edu if (!tc->getMemProxy().tryReadString(path, 6375877Shsul@eecs.umich.edu process->getSyscallArg(tc, index))) 6385877Shsul@eecs.umich.edu return -EFAULT; 6395877Shsul@eecs.umich.edu 6405877Shsul@eecs.umich.edu if (path == "/dev/sysdev0") { 6415877Shsul@eecs.umich.edu // This is a memory-mapped high-resolution timer device on Alpha. 6425877Shsul@eecs.umich.edu // We don't support it, so just punt. 6435877Shsul@eecs.umich.edu warn("Ignoring open(%s, ...)\n", path); 6445877Shsul@eecs.umich.edu return -ENOENT; 6455877Shsul@eecs.umich.edu } 6465877Shsul@eecs.umich.edu 6475877Shsul@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6485877Shsul@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 6495877Shsul@eecs.umich.edu int hostFlags = 0; 6505877Shsul@eecs.umich.edu 6515877Shsul@eecs.umich.edu // translate open flags 6525877Shsul@eecs.umich.edu for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 6535877Shsul@eecs.umich.edu if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 6545877Shsul@eecs.umich.edu tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 6551999SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 656378SN/A } 657360SN/A } 6581450SN/A 6593114Sgblack@eecs.umich.edu // any target flags left? 6602680Sktlim@umich.edu if (tgtFlags != 0) 661360SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 662360SN/A 663360SN/A#ifdef __CYGWIN32__ 6645958Sgblack@eecs.umich.edu hostFlags |= O_BINARY; 6652400SN/A#endif 666360SN/A 6673669Sbinkertn@umich.edu // Adjust path for current working directory 6683669Sbinkertn@umich.edu path = process->fullPath(path); 6693669Sbinkertn@umich.edu 670360SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 671360SN/A 672360SN/A int fd; 673360SN/A int local_errno; 6742218SN/A if (startswith(path, "/proc/") || startswith(path, "/system/") || 675360SN/A startswith(path, "/platform/") || startswith(path, "/sys/")) { 6765958Sgblack@eecs.umich.edu // It's a proc/sys entry and requires special handling 6775958Sgblack@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 678360SN/A local_errno = ENOENT; 6791458SN/A } else { 680360SN/A // open the file 681360SN/A fd = open(path.c_str(), hostFlags, mode); 682360SN/A local_errno = errno; 6835074Ssaidi@eecs.umich.edu } 6845074Ssaidi@eecs.umich.edu 6855074Ssaidi@eecs.umich.edu if (fd == -1) 6865074Ssaidi@eecs.umich.edu return -local_errno; 6875074Ssaidi@eecs.umich.edu 6885074Ssaidi@eecs.umich.edu return process->alloc_fd(fd, path.c_str(), hostFlags, mode, false); 6895074Ssaidi@eecs.umich.edu} 6905074Ssaidi@eecs.umich.edu 6915958Sgblack@eecs.umich.edu/// Target open() handler. 6925074Ssaidi@eecs.umich.edutemplate <class OS> 6935074Ssaidi@eecs.umich.eduSyscallReturn 6945074Ssaidi@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6955074Ssaidi@eecs.umich.edu ThreadContext *tc) 6965074Ssaidi@eecs.umich.edu{ 6975208Ssaidi@eecs.umich.edu return openFunc<OS>(desc, callnum, process, tc, 0); 6985208Ssaidi@eecs.umich.edu} 6995208Ssaidi@eecs.umich.edu 7005208Ssaidi@eecs.umich.edu/// Target openat() handler. 7015074Ssaidi@eecs.umich.edutemplate <class OS> 7025074Ssaidi@eecs.umich.eduSyscallReturn 7035208Ssaidi@eecs.umich.eduopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7045074Ssaidi@eecs.umich.edu ThreadContext *tc) 7055074Ssaidi@eecs.umich.edu{ 7065074Ssaidi@eecs.umich.edu int index = 0; 7075074Ssaidi@eecs.umich.edu int dirfd = process->getSyscallArg(tc, index); 7085958Sgblack@eecs.umich.edu if (dirfd != OS::TGT_AT_FDCWD) 7095958Sgblack@eecs.umich.edu warn("openat: first argument not AT_FDCWD; unlikely to work"); 7105074Ssaidi@eecs.umich.edu return openFunc<OS>(desc, callnum, process, tc, 1); 7115074Ssaidi@eecs.umich.edu} 7125074Ssaidi@eecs.umich.edu 7135074Ssaidi@eecs.umich.edu/// Target facessat() handler 7145074Ssaidi@eecs.umich.edutemplate <class OS> 7151999SN/ASyscallReturn 7161999SN/AfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7171999SN/A ThreadContext *tc) 7183114Sgblack@eecs.umich.edu{ 7192680Sktlim@umich.edu int index = 0; 7201999SN/A int dirfd = process->getSyscallArg(tc, index); 7215958Sgblack@eecs.umich.edu if (dirfd != OS::TGT_AT_FDCWD) 7221999SN/A warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 7231999SN/A return accessFunc(desc, callnum, process, tc, 1); 7241999SN/A} 7251999SN/A 7261999SN/A/// Target readlinkat() handler 7272764Sstever@eecs.umich.edutemplate <class OS> 7282064SN/ASyscallReturn 7292064SN/AreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7302064SN/A ThreadContext *tc) 7312064SN/A{ 7321999SN/A int index = 0; 7332064SN/A int dirfd = process->getSyscallArg(tc, index); 7341999SN/A if (dirfd != OS::TGT_AT_FDCWD) 7351999SN/A warn("openat: first argument not AT_FDCWD; unlikely to work"); 7362218SN/A return readlinkFunc(desc, callnum, process, tc, 1); 7371999SN/A} 7385958Sgblack@eecs.umich.edu 7393114Sgblack@eecs.umich.edu/// Target sysinfo() handler. 7401999SN/Atemplate <class OS> 7411999SN/ASyscallReturn 7421999SN/AsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7431999SN/A ThreadContext *tc) 7441999SN/A{ 745378SN/A 746360SN/A int index = 0; 7471450SN/A TypedBufferArg<typename OS::tgt_sysinfo> 7483114Sgblack@eecs.umich.edu sysinfo(process->getSyscallArg(tc, index)); 7492680Sktlim@umich.edu 750360SN/A sysinfo->uptime=seconds_since_epoch; 751360SN/A sysinfo->totalram=process->system->memSize(); 752360SN/A 7535958Sgblack@eecs.umich.edu sysinfo.copyOut(tc->getMemProxy()); 7542400SN/A 755360SN/A return 0; 7563669Sbinkertn@umich.edu} 7573669Sbinkertn@umich.edu 7583669Sbinkertn@umich.edu/// Target chmod() handler. 759360SN/Atemplate <class OS> 760360SN/ASyscallReturn 761360SN/AchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 762360SN/A ThreadContext *tc) 7631458SN/A{ 764360SN/A std::string path; 7655958Sgblack@eecs.umich.edu 7665958Sgblack@eecs.umich.edu int index = 0; 767360SN/A if (!tc->getMemProxy().tryReadString(path, 7681458SN/A process->getSyscallArg(tc, index))) { 769360SN/A return -EFAULT; 770360SN/A } 7711999SN/A 7721999SN/A uint32_t mode = process->getSyscallArg(tc, index); 7731999SN/A mode_t hostMode = 0; 7743114Sgblack@eecs.umich.edu 7752680Sktlim@umich.edu // XXX translate mode flags via OS::something??? 7761999SN/A hostMode = mode; 7771999SN/A 7781999SN/A // Adjust path for current working directory 7795958Sgblack@eecs.umich.edu path = process->fullPath(path); 7802400SN/A 7811999SN/A // do the chmod 7823669Sbinkertn@umich.edu int result = chmod(path.c_str(), hostMode); 7833669Sbinkertn@umich.edu if (result < 0) 7843669Sbinkertn@umich.edu return -errno; 7852764Sstever@eecs.umich.edu 7862064SN/A return 0; 7872064SN/A} 7882064SN/A 7891999SN/A 7901999SN/A/// Target fchmod() handler. 7912064SN/Atemplate <class OS> 7921999SN/ASyscallReturn 7931999SN/AfchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7941999SN/A ThreadContext *tc) 7951999SN/A{ 7965958Sgblack@eecs.umich.edu int index = 0; 7975958Sgblack@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 } 802378SN/A 803360SN/A uint32_t mode = process->getSyscallArg(tc, index); 8041450SN/A mode_t hostMode = 0; 8053114Sgblack@eecs.umich.edu 8062680Sktlim@umich.edu // XXX translate mode flags via OS::someting??? 807360SN/A hostMode = mode; 8085958Sgblack@eecs.umich.edu 809360SN/A // do the fchmod 8101969SN/A int result = fchmod(process->sim_fd(fd), hostMode); 811360SN/A if (result < 0) 812360SN/A return -errno; 8131458SN/A 814360SN/A return 0; 815360SN/A} 816360SN/A 817360SN/A/// Target mremap() handler. 818360SN/Atemplate <class OS> 8191458SN/ASyscallReturn 820360SN/AmremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8215958Sgblack@eecs.umich.edu{ 8223114Sgblack@eecs.umich.edu int index = 0; 8232021SN/A Addr start = process->getSyscallArg(tc, index); 8241458SN/A uint64_t old_length = process->getSyscallArg(tc, index); 825360SN/A uint64_t new_length = process->getSyscallArg(tc, index); 826360SN/A uint64_t flags = process->getSyscallArg(tc, index); 827360SN/A uint64_t provided_address = 0; 8281706SN/A bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 8291706SN/A 8301706SN/A if (use_provided_address) 8313114Sgblack@eecs.umich.edu provided_address = process->getSyscallArg(tc, index); 8322680Sktlim@umich.edu 8331706SN/A if ((start % TheISA::PageBytes != 0) || 8341706SN/A (new_length % TheISA::PageBytes != 0) || 8351706SN/A (provided_address % TheISA::PageBytes != 0)) { 8365958Sgblack@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8372400SN/A return -EINVAL; 8381706SN/A } 8393669Sbinkertn@umich.edu 8403669Sbinkertn@umich.edu if (new_length > old_length) { 8413669Sbinkertn@umich.edu if ((start + old_length) == process->mmap_end && 8421706SN/A (!use_provided_address || provided_address == start)) { 8431706SN/A uint64_t diff = new_length - old_length; 8441706SN/A process->allocateMem(process->mmap_end, diff); 8451706SN/A process->mmap_end += diff; 8462218SN/A return start; 8471706SN/A } else { 8483114Sgblack@eecs.umich.edu if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8495958Sgblack@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8501706SN/A return -ENOMEM; 8511706SN/A } else { 8521706SN/A uint64_t new_start = use_provided_address ? 8531706SN/A provided_address : process->mmap_end; 8541706SN/A process->pTable->remap(start, old_length, new_start); 8551706SN/A warn("mremapping to new vaddr %08p-%08p, adding %d\n", 8561706SN/A new_start, new_start + new_length, 8571706SN/A new_length - old_length); 8583114Sgblack@eecs.umich.edu // add on the remaining unallocated pages 8592680Sktlim@umich.edu process->allocateMem(new_start + old_length, 8601706SN/A new_length - old_length, 8615958Sgblack@eecs.umich.edu use_provided_address /* clobber */); 8621706SN/A if (!use_provided_address) 8631706SN/A process->mmap_end += new_length; 8641706SN/A if (use_provided_address && 8651706SN/A new_start + new_length > process->mmap_end) { 8661706SN/A // something fishy going on here, at least notify the user 8671706SN/A // @todo: increase mmap_end? 8681706SN/A warn("mmap region limit exceeded with MREMAP_FIXED\n"); 8691706SN/A } 8702218SN/A warn("returning %08p as start\n", new_start); 8711706SN/A return new_start; 8725958Sgblack@eecs.umich.edu } 8733114Sgblack@eecs.umich.edu } 8741706SN/A } else { 8751706SN/A if (use_provided_address && provided_address != start) 8761706SN/A process->pTable->remap(start, new_length, provided_address); 8771706SN/A process->pTable->unmap(start + new_length, old_length - new_length); 8781706SN/A return use_provided_address ? provided_address : start; 8791999SN/A } 8801999SN/A} 8811999SN/A 8823114Sgblack@eecs.umich.edu/// Target stat() handler. 8832680Sktlim@umich.edutemplate <class OS> 8841999SN/ASyscallReturn 8855958Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8861999SN/A ThreadContext *tc) 8871999SN/A{ 8881999SN/A std::string path; 8891999SN/A 8901999SN/A int index = 0; 8912680Sktlim@umich.edu if (!tc->getMemProxy().tryReadString(path, 8925958Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8935958Sgblack@eecs.umich.edu return -EFAULT; 8941999SN/A } 8951999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 8961999SN/A 8971999SN/A // Adjust path for current working directory 8982461SN/A path = process->fullPath(path); 8992461SN/A 9002461SN/A struct stat hostBuf; 9012091SN/A int result = stat(path.c_str(), &hostBuf); 9021999SN/A 9032461SN/A if (result < 0) 9042461SN/A return -errno; 9051999SN/A 9061999SN/A copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9071999SN/A 9081999SN/A return 0; 9091999SN/A} 9101999SN/A 9111999SN/A 9121999SN/A/// Target stat64() handler. 9131999SN/Atemplate <class OS> 9141999SN/ASyscallReturn 9152218SN/Astat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9161999SN/A ThreadContext *tc) 9171999SN/A{ 9181999SN/A std::string path; 9191999SN/A 9201999SN/A int index = 0; 921378SN/A if (!tc->getMemProxy().tryReadString(path, 922378SN/A process->getSyscallArg(tc, index))) 923378SN/A return -EFAULT; 924378SN/A Addr bufPtr = process->getSyscallArg(tc, index); 925378SN/A 926378SN/A // Adjust path for current working directory 927378SN/A path = process->fullPath(path); 928378SN/A 929360SN/A#if NO_STAT64 930378SN/A struct stat hostBuf; 931378SN/A int result = stat(path.c_str(), &hostBuf); 932378SN/A#else 933360SN/A struct stat64 hostBuf; 9341450SN/A int result = stat64(path.c_str(), &hostBuf); 9353114Sgblack@eecs.umich.edu#endif 936360SN/A 9375958Sgblack@eecs.umich.edu if (result < 0) 9385958Sgblack@eecs.umich.edu return -errno; 9395958Sgblack@eecs.umich.edu 9405958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9415958Sgblack@eecs.umich.edu 9425958Sgblack@eecs.umich.edu return 0; 943360SN/A} 9445877Shsul@eecs.umich.edu 9452544SN/A 9462544SN/A/// Target fstatat64() handler. 9472544SN/Atemplate <class OS> 9482544SN/ASyscallReturn 9492544SN/Afstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9502544SN/A ThreadContext *tc) 951360SN/A{ 952360SN/A int index = 0; 9532544SN/A int dirfd = process->getSyscallArg(tc, index); 9542544SN/A if (dirfd != OS::TGT_AT_FDCWD) 9552544SN/A warn("openat: first argument not AT_FDCWD; unlikely to work"); 9562544SN/A 9572544SN/A std::string path; 9582544SN/A if (!tc->getMemProxy().tryReadString(path, 9592544SN/A process->getSyscallArg(tc, index))) 9602544SN/A return -EFAULT; 9612544SN/A Addr bufPtr = process->getSyscallArg(tc, index); 9622544SN/A 9632553SN/A // Adjust path for current working directory 9641969SN/A path = process->fullPath(path); 9655958Sgblack@eecs.umich.edu 966360SN/A#if NO_STAT64 967360SN/A struct stat hostBuf; 9681458SN/A int result = stat(path.c_str(), &hostBuf); 969360SN/A#else 970360SN/A struct stat64 hostBuf; 971378SN/A int result = stat64(path.c_str(), &hostBuf); 972360SN/A#endif 9731450SN/A 9743114Sgblack@eecs.umich.edu if (result < 0) 9752680Sktlim@umich.edu return -errno; 976360SN/A 9775958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9785958Sgblack@eecs.umich.edu 979360SN/A return 0; 980360SN/A} 9812064SN/A 9825877Shsul@eecs.umich.edu 9832064SN/A/// Target fstat64() handler. 9842091SN/Atemplate <class OS> 9852091SN/ASyscallReturn 9862064SN/Afstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 987360SN/A ThreadContext *tc) 9885877Shsul@eecs.umich.edu{ 9895877Shsul@eecs.umich.edu int index = 0; 9905877Shsul@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 9915877Shsul@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9925877Shsul@eecs.umich.edu if (fd < 0 || process->sim_fd(fd) < 0) { 9935877Shsul@eecs.umich.edu // doesn't map to any simulator fd: not a valid target fd 9945877Shsul@eecs.umich.edu return -EBADF; 9952064SN/A } 9962064SN/A 9972064SN/A#if NO_STAT64 9982064SN/A struct stat hostBuf; 9992064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 1000360SN/A#else 1001360SN/A struct stat64 hostBuf; 10022680Sktlim@umich.edu int result = fstat64(process->sim_fd(fd), &hostBuf); 10031458SN/A#endif 1004360SN/A 1005360SN/A if (result < 0) 1006378SN/A return -errno; 1007360SN/A 10081450SN/A copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 10093114Sgblack@eecs.umich.edu 10102680Sktlim@umich.edu return 0; 1011360SN/A} 10125958Sgblack@eecs.umich.edu 1013360SN/A 1014360SN/A/// Target lstat() handler. 1015360SN/Atemplate <class OS> 10162091SN/ASyscallReturn 10172091SN/AlstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1018360SN/A ThreadContext *tc) 10192680Sktlim@umich.edu{ 1020360SN/A std::string path; 10211458SN/A 1022360SN/A int index = 0; 1023360SN/A if (!tc->getMemProxy().tryReadString(path, 1024360SN/A process->getSyscallArg(tc, index))) { 10251999SN/A return -EFAULT; 10261999SN/A } 10271999SN/A Addr bufPtr = process->getSyscallArg(tc, index); 10283114Sgblack@eecs.umich.edu 10292680Sktlim@umich.edu // Adjust path for current working directory 10301999SN/A path = process->fullPath(path); 10311999SN/A 10321999SN/A struct stat hostBuf; 10335958Sgblack@eecs.umich.edu int result = lstat(path.c_str(), &hostBuf); 10342400SN/A 10351999SN/A if (result < 0) 10365958Sgblack@eecs.umich.edu return -errno; 10372680Sktlim@umich.edu 10381999SN/A copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10391999SN/A 10401999SN/A return 0; 10411999SN/A} 10422091SN/A 10432091SN/A/// Target lstat64() handler. 10441999SN/Atemplate <class OS> 10453669Sbinkertn@umich.eduSyscallReturn 10463669Sbinkertn@umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10473669Sbinkertn@umich.edu ThreadContext *tc) 10483669Sbinkertn@umich.edu{ 10491999SN/A std::string path; 10501999SN/A 10511999SN/A int index = 0; 10521999SN/A if (!tc->getMemProxy().tryReadString(path, 10531999SN/A process->getSyscallArg(tc, index))) { 10541999SN/A return -EFAULT; 10551999SN/A } 1056378SN/A Addr bufPtr = process->getSyscallArg(tc, index); 1057360SN/A 10581450SN/A // Adjust path for current working directory 10593114Sgblack@eecs.umich.edu path = process->fullPath(path); 10602680Sktlim@umich.edu 1061360SN/A#if NO_STAT64 10625958Sgblack@eecs.umich.edu struct stat hostBuf; 10635958Sgblack@eecs.umich.edu int result = lstat(path.c_str(), &hostBuf); 1064360SN/A#else 10653670Sbinkertn@umich.edu struct stat64 hostBuf; 10663670Sbinkertn@umich.edu int result = lstat64(path.c_str(), &hostBuf); 1067360SN/A#endif 1068360SN/A 1069360SN/A if (result < 0) 1070360SN/A return -errno; 1071360SN/A 1072360SN/A copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1073360SN/A 1074360SN/A return 0; 1075360SN/A} 1076360SN/A 1077360SN/A/// Target fstat() handler. 1078360SN/Atemplate <class OS> 1079360SN/ASyscallReturn 1080360SN/AfstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1081360SN/A ThreadContext *tc) 1082360SN/A{ 1083360SN/A int index = 0; 10843670Sbinkertn@umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 10853670Sbinkertn@umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10863670Sbinkertn@umich.edu 10873670Sbinkertn@umich.edu DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 10883670Sbinkertn@umich.edu 10893670Sbinkertn@umich.edu if (fd < 0) 10903670Sbinkertn@umich.edu return -EBADF; 10913670Sbinkertn@umich.edu 10923670Sbinkertn@umich.edu struct stat hostBuf; 10933670Sbinkertn@umich.edu int result = fstat(fd, &hostBuf); 10943670Sbinkertn@umich.edu 10953670Sbinkertn@umich.edu if (result < 0) 10963670Sbinkertn@umich.edu return -errno; 10973670Sbinkertn@umich.edu 10983670Sbinkertn@umich.edu copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 10993670Sbinkertn@umich.edu 11003670Sbinkertn@umich.edu return 0; 11013670Sbinkertn@umich.edu} 11022680Sktlim@umich.edu 1103360SN/A 11041458SN/A/// Target statfs() handler. 1105360SN/Atemplate <class OS> 1106360SN/ASyscallReturn 11072553SN/AstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11082553SN/A ThreadContext *tc) 11092553SN/A{ 11101354SN/A std::string path; 1111 1112 int index = 0; 1113 if (!tc->getMemProxy().tryReadString(path, 1114 process->getSyscallArg(tc, index))) { 1115 return -EFAULT; 1116 } 1117 Addr bufPtr = process->getSyscallArg(tc, index); 1118 1119 // Adjust path for current working directory 1120 path = process->fullPath(path); 1121 1122 struct statfs hostBuf; 1123 int result = statfs(path.c_str(), &hostBuf); 1124 1125 if (result < 0) 1126 return -errno; 1127 1128 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 1129 1130 return 0; 1131} 1132 1133 1134/// Target fstatfs() handler. 1135template <class OS> 1136SyscallReturn 1137fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1138 ThreadContext *tc) 1139{ 1140 int index = 0; 1141 int fd = process->sim_fd(process->getSyscallArg(tc, index)); 1142 Addr bufPtr = process->getSyscallArg(tc, index); 1143 1144 if (fd < 0) 1145 return -EBADF; 1146 1147 struct statfs hostBuf; 1148 int result = fstatfs(fd, &hostBuf); 1149 1150 if (result < 0) 1151 return -errno; 1152 1153 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 1154 1155 return 0; 1156} 1157 1158 1159/// Target writev() handler. 1160template <class OS> 1161SyscallReturn 1162writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1163 ThreadContext *tc) 1164{ 1165 int index = 0; 1166 int fd = process->getSyscallArg(tc, index); 1167 if (fd < 0 || process->sim_fd(fd) < 0) { 1168 // doesn't map to any simulator fd: not a valid target fd 1169 return -EBADF; 1170 } 1171 1172 SETranslatingPortProxy &p = tc->getMemProxy(); 1173 uint64_t tiov_base = process->getSyscallArg(tc, index); 1174 size_t count = process->getSyscallArg(tc, index); 1175 struct iovec hiov[count]; 1176 for (size_t i = 0; i < count; ++i) { 1177 typename OS::tgt_iovec tiov; 1178 1179 p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 1180 (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 1181 hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 1182 hiov[i].iov_base = new char [hiov[i].iov_len]; 1183 p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 1184 hiov[i].iov_len); 1185 } 1186 1187 int result = writev(process->sim_fd(fd), hiov, count); 1188 1189 for (size_t i = 0; i < count; ++i) 1190 delete [] (char *)hiov[i].iov_base; 1191 1192 if (result < 0) 1193 return -errno; 1194 1195 return 0; 1196} 1197 1198 1199/// Target mmap() handler. 1200/// 1201/// We don't really handle mmap(). If the target is mmaping an 1202/// anonymous region or /dev/zero, we can get away with doing basically 1203/// nothing (since memory is initialized to zero and the simulator 1204/// doesn't really check addresses anyway). 1205/// 1206template <class OS> 1207SyscallReturn 1208mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1209{ 1210 int index = 0; 1211 Addr start = p->getSyscallArg(tc, index); 1212 uint64_t length = p->getSyscallArg(tc, index); 1213 index++; // int prot = p->getSyscallArg(tc, index); 1214 int flags = p->getSyscallArg(tc, index); 1215 int tgt_fd = p->getSyscallArg(tc, index); 1216 // int offset = p->getSyscallArg(tc, index); 1217 1218 if (length > 0x100000000ULL) 1219 warn("mmap length argument %#x is unreasonably large.\n", length); 1220 1221 if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 1222 Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd); 1223 if (!fd_map || fd_map->fd < 0) { 1224 warn("mmap failing: target fd %d is not valid\n", tgt_fd); 1225 return -EBADF; 1226 } 1227 1228 if (fd_map->filename != "/dev/zero") { 1229 // This is very likely broken, but leave a warning here 1230 // (rather than panic) in case /dev/zero is known by 1231 // another name on some platform 1232 warn("allowing mmap of file %s; mmap not supported on files" 1233 " other than /dev/zero\n", fd_map->filename); 1234 } 1235 } 1236 1237 if ((start % TheISA::PageBytes) != 0 || 1238 (length % TheISA::PageBytes) != 0) { 1239 warn("mmap failing: arguments not page-aligned: " 1240 "start 0x%x length 0x%x", 1241 start, length); 1242 return -EINVAL; 1243 } 1244 1245 // are we ok with clobbering existing mappings? only set this to 1246 // true if the user has been warned. 1247 bool clobber = false; 1248 1249 // try to use the caller-provided address if there is one 1250 bool use_provided_address = (start != 0); 1251 1252 if (use_provided_address) { 1253 // check to see if the desired address is already in use 1254 if (!p->pTable->isUnmapped(start, length)) { 1255 // there are existing mappings in the desired range 1256 // whether we clobber them or not depends on whether the caller 1257 // specified MAP_FIXED 1258 if (flags & OS::TGT_MAP_FIXED) { 1259 // MAP_FIXED specified: map attempt fails 1260 return -EINVAL; 1261 } else { 1262 // MAP_FIXED not specified: ignore suggested start address 1263 warn("mmap: ignoring suggested map address 0x%x\n", start); 1264 use_provided_address = false; 1265 } 1266 } 1267 } 1268 1269 if (!use_provided_address) { 1270 // no address provided, or provided address unusable: 1271 // pick next address from our "mmap region" 1272 if (OS::mmapGrowsDown()) { 1273 start = p->mmap_end - length; 1274 p->mmap_end = start; 1275 } else { 1276 start = p->mmap_end; 1277 p->mmap_end += length; 1278 } 1279 } 1280 1281 p->allocateMem(start, length, clobber); 1282 1283 return start; 1284} 1285 1286/// Target getrlimit() handler. 1287template <class OS> 1288SyscallReturn 1289getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1290 ThreadContext *tc) 1291{ 1292 int index = 0; 1293 unsigned resource = process->getSyscallArg(tc, index); 1294 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1295 1296 switch (resource) { 1297 case OS::TGT_RLIMIT_STACK: 1298 // max stack size in bytes: make up a number (8MB for now) 1299 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 1300 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 1301 rlp->rlim_max = TheISA::htog(rlp->rlim_max); 1302 break; 1303 1304 case OS::TGT_RLIMIT_DATA: 1305 // max data segment size in bytes: make up a number 1306 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 1307 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 1308 rlp->rlim_max = TheISA::htog(rlp->rlim_max); 1309 break; 1310 1311 default: 1312 std::cerr << "getrlimitFunc: unimplemented resource " << resource 1313 << std::endl; 1314 abort(); 1315 break; 1316 } 1317 1318 rlp.copyOut(tc->getMemProxy()); 1319 return 0; 1320} 1321 1322/// Target gettimeofday() handler. 1323template <class OS> 1324SyscallReturn 1325gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1326 ThreadContext *tc) 1327{ 1328 int index = 0; 1329 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1330 1331 getElapsedTime(tp->tv_sec, tp->tv_usec); 1332 tp->tv_sec += seconds_since_epoch; 1333 tp->tv_sec = TheISA::htog(tp->tv_sec); 1334 tp->tv_usec = TheISA::htog(tp->tv_usec); 1335 1336 tp.copyOut(tc->getMemProxy()); 1337 1338 return 0; 1339} 1340 1341 1342/// Target utimes() handler. 1343template <class OS> 1344SyscallReturn 1345utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1346 ThreadContext *tc) 1347{ 1348 std::string path; 1349 1350 int index = 0; 1351 if (!tc->getMemProxy().tryReadString(path, 1352 process->getSyscallArg(tc, index))) { 1353 return -EFAULT; 1354 } 1355 1356 TypedBufferArg<typename OS::timeval [2]> 1357 tp(process->getSyscallArg(tc, index)); 1358 tp.copyIn(tc->getMemProxy()); 1359 1360 struct timeval hostTimeval[2]; 1361 for (int i = 0; i < 2; ++i) 1362 { 1363 hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 1364 hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 1365 } 1366 1367 // Adjust path for current working directory 1368 path = process->fullPath(path); 1369 1370 int result = utimes(path.c_str(), hostTimeval); 1371 1372 if (result < 0) 1373 return -errno; 1374 1375 return 0; 1376} 1377/// Target getrusage() function. 1378template <class OS> 1379SyscallReturn 1380getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1381 ThreadContext *tc) 1382{ 1383 int index = 0; 1384 int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 1385 TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1386 1387 rup->ru_utime.tv_sec = 0; 1388 rup->ru_utime.tv_usec = 0; 1389 rup->ru_stime.tv_sec = 0; 1390 rup->ru_stime.tv_usec = 0; 1391 rup->ru_maxrss = 0; 1392 rup->ru_ixrss = 0; 1393 rup->ru_idrss = 0; 1394 rup->ru_isrss = 0; 1395 rup->ru_minflt = 0; 1396 rup->ru_majflt = 0; 1397 rup->ru_nswap = 0; 1398 rup->ru_inblock = 0; 1399 rup->ru_oublock = 0; 1400 rup->ru_msgsnd = 0; 1401 rup->ru_msgrcv = 0; 1402 rup->ru_nsignals = 0; 1403 rup->ru_nvcsw = 0; 1404 rup->ru_nivcsw = 0; 1405 1406 switch (who) { 1407 case OS::TGT_RUSAGE_SELF: 1408 getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 1409 rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 1410 rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 1411 break; 1412 1413 case OS::TGT_RUSAGE_CHILDREN: 1414 // do nothing. We have no child processes, so they take no time. 1415 break; 1416 1417 default: 1418 // don't really handle THREAD or CHILDREN, but just warn and 1419 // plow ahead 1420 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 1421 who); 1422 } 1423 1424 rup.copyOut(tc->getMemProxy()); 1425 1426 return 0; 1427} 1428 1429/// Target times() function. 1430template <class OS> 1431SyscallReturn 1432timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1433 ThreadContext *tc) 1434{ 1435 int index = 0; 1436 TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 1437 1438 // Fill in the time structure (in clocks) 1439 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 1440 bufp->tms_utime = clocks; 1441 bufp->tms_stime = 0; 1442 bufp->tms_cutime = 0; 1443 bufp->tms_cstime = 0; 1444 1445 // Convert to host endianness 1446 bufp->tms_utime = TheISA::htog(bufp->tms_utime); 1447 1448 // Write back 1449 bufp.copyOut(tc->getMemProxy()); 1450 1451 // Return clock ticks since system boot 1452 return clocks; 1453} 1454 1455/// Target time() function. 1456template <class OS> 1457SyscallReturn 1458timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 1459 ThreadContext *tc) 1460{ 1461 typename OS::time_t sec, usec; 1462 getElapsedTime(sec, usec); 1463 sec += seconds_since_epoch; 1464 1465 int index = 0; 1466 Addr taddr = (Addr)process->getSyscallArg(tc, index); 1467 if(taddr != 0) { 1468 typename OS::time_t t = sec; 1469 t = TheISA::htog(t); 1470 SETranslatingPortProxy &p = tc->getMemProxy(); 1471 p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 1472 } 1473 return sec; 1474} 1475 1476 1477#endif // __SIM_SYSCALL_EMUL_HH__ 1478