syscall_emul.hh revision 6672
1360SN/A/* 21458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 3360SN/A * All rights reserved. 4360SN/A * 5360SN/A * Redistribution and use in source and binary forms, with or without 6360SN/A * modification, are permitted provided that the following conditions are 7360SN/A * met: redistributions of source code must retain the above copyright 8360SN/A * notice, this list of conditions and the following disclaimer; 9360SN/A * redistributions in binary form must reproduce the above copyright 10360SN/A * notice, this list of conditions and the following disclaimer in the 11360SN/A * documentation and/or other materials provided with the distribution; 12360SN/A * neither the name of the copyright holders nor the names of its 13360SN/A * contributors may be used to endorse or promote products derived from 14360SN/A * this software without specific prior written permission. 15360SN/A * 16360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 292665Ssaidi@eecs.umich.edu * Kevin Lim 30360SN/A */ 31360SN/A 321354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 331354SN/A#define __SIM_SYSCALL_EMUL_HH__ 34360SN/A 352764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 362764Sstever@eecs.umich.edu defined(__FreeBSD__) || defined(__CYGWIN__)) 372064SN/A 38360SN/A/// 39360SN/A/// @file syscall_emul.hh 40360SN/A/// 41360SN/A/// This file defines objects used to emulate syscalls from the target 42360SN/A/// application on the host machine. 43360SN/A 441354SN/A#include <errno.h> 45360SN/A#include <string> 461809SN/A#ifdef __CYGWIN32__ 475543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 481809SN/A#endif 493113Sgblack@eecs.umich.edu#include <sys/stat.h> 503113Sgblack@eecs.umich.edu#include <fcntl.h> 511999SN/A#include <sys/uio.h> 52360SN/A 532474SN/A#include "base/chunk_generator.hh" 545543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 552462SN/A#include "base/misc.hh" 561354SN/A#include "base/trace.hh" 576216Snate@binkert.org#include "base/types.hh" 586658Snate@binkert.org#include "config/the_isa.hh" 592474SN/A#include "cpu/base.hh" 602680Sktlim@umich.edu#include "cpu/thread_context.hh" 612474SN/A#include "mem/translating_port.hh" 622474SN/A#include "mem/page_table.hh" 636640Svince@csl.cornell.edu#include "sim/system.hh" 641354SN/A#include "sim/process.hh" 65360SN/A 66360SN/A/// 67360SN/A/// System call descriptor. 68360SN/A/// 69360SN/Aclass SyscallDesc { 70360SN/A 71360SN/A public: 72360SN/A 73378SN/A /// Typedef for target syscall handler functions. 741450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 753114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 76360SN/A 775543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 785543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 795543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 80360SN/A 81360SN/A /// Flag values for controlling syscall behavior. 82360SN/A enum Flags { 83360SN/A /// Don't set return regs according to funcPtr return value. 84360SN/A /// Used for syscalls with non-standard return conventions 852680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 86360SN/A /// sigreturn). 87360SN/A SuppressReturnValue = 1 88360SN/A }; 89360SN/A 90360SN/A /// Constructor. 91360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 92360SN/A : name(_name), funcPtr(_funcPtr), flags(_flags) 93360SN/A { 94360SN/A } 95360SN/A 96360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 973114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 98360SN/A}; 99360SN/A 100360SN/A 101360SN/Aclass BaseBufferArg { 102360SN/A 103360SN/A public: 104360SN/A 105360SN/A BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size) 106360SN/A { 107360SN/A bufPtr = new uint8_t[size]; 108360SN/A // clear out buffer: in case we only partially populate this, 109360SN/A // and then do a copyOut(), we want to make sure we don't 110360SN/A // introduce any random junk into the simulated address space 111360SN/A memset(bufPtr, 0, size); 112360SN/A } 113360SN/A 114360SN/A virtual ~BaseBufferArg() { delete [] bufPtr; } 115360SN/A 116360SN/A // 117360SN/A // copy data into simulator space (read from target memory) 118360SN/A // 1192400SN/A virtual bool copyIn(TranslatingPort *memport) 120360SN/A { 1212461SN/A memport->readBlob(addr, bufPtr, size); 1225543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 123360SN/A } 124360SN/A 125360SN/A // 126360SN/A // copy data out of simulator space (write to target memory) 127360SN/A // 1282400SN/A virtual bool copyOut(TranslatingPort *memport) 129360SN/A { 1302461SN/A memport->writeBlob(addr, bufPtr, size); 1315543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 132360SN/A } 133360SN/A 134360SN/A protected: 135360SN/A Addr addr; 136360SN/A int size; 137360SN/A uint8_t *bufPtr; 138360SN/A}; 139360SN/A 140360SN/A 141360SN/Aclass BufferArg : public BaseBufferArg 142360SN/A{ 143360SN/A public: 144360SN/A BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { } 1455543Ssaidi@eecs.umich.edu void *bufferPtr() { return bufPtr; } 146360SN/A}; 147360SN/A 148360SN/Atemplate <class T> 149360SN/Aclass TypedBufferArg : public BaseBufferArg 150360SN/A{ 151360SN/A public: 152360SN/A // user can optionally specify a specific number of bytes to 153360SN/A // allocate to deal with those structs that have variable-size 154360SN/A // arrays at the end 155360SN/A TypedBufferArg(Addr _addr, int _size = sizeof(T)) 156360SN/A : BaseBufferArg(_addr, _size) 157360SN/A { } 158360SN/A 159360SN/A // type case 160360SN/A operator T*() { return (T *)bufPtr; } 161360SN/A 162360SN/A // dereference operators 1635543Ssaidi@eecs.umich.edu T &operator*() { return *((T *)bufPtr); } 1645543Ssaidi@eecs.umich.edu T* operator->() { return (T *)bufPtr; } 165502SN/A T &operator[](int i) { return ((T *)bufPtr)[i]; } 166360SN/A}; 167360SN/A 168360SN/A////////////////////////////////////////////////////////////////////// 169360SN/A// 170360SN/A// The following emulation functions are generic enough that they 171360SN/A// don't need to be recompiled for different emulated OS's. They are 172360SN/A// defined in sim/syscall_emul.cc. 173360SN/A// 174360SN/A////////////////////////////////////////////////////////////////////// 175360SN/A 176360SN/A 177378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1781706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1793114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 180378SN/A 181378SN/A/// Handler for unimplemented syscalls that we never intend to 182378SN/A/// implement (signal handling, etc.) and should not affect the correct 183378SN/A/// behavior of the program. Print a warning only if the appropriate 184378SN/A/// trace flag is enabled. Return success to the target program. 1851706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1863114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 187360SN/A 1886109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1891706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1903114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 191378SN/A 1926109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1936109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1946109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1956109Ssanchezd@stanford.edu 196378SN/A/// Target getpagesize() handler. 1971706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1983114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 199378SN/A 2005748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 2015748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 2025748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 203378SN/A 204378SN/A/// Target close() handler. 2051706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 2063114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 207378SN/A 208378SN/A/// Target read() handler. 2091706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 2103114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 211378SN/A 212378SN/A/// Target write() handler. 2131706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 2143114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 215378SN/A 216378SN/A/// Target lseek() handler. 2171706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 2183114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 219378SN/A 2204118Sgblack@eecs.umich.edu/// Target _llseek() handler. 2214118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 2224118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2234118Sgblack@eecs.umich.edu 224378SN/A/// Target munmap() handler. 2251706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2263114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 227378SN/A 228378SN/A/// Target gethostname() handler. 2291706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2303114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 231360SN/A 2325513SMichael.Adler@intel.com/// Target getcwd() handler. 2335513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2345513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2355513SMichael.Adler@intel.com 2365513SMichael.Adler@intel.com/// Target unlink() handler. 2375513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2385513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2395513SMichael.Adler@intel.com 240511SN/A/// Target unlink() handler. 2411706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2423114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 243511SN/A 2445513SMichael.Adler@intel.com/// Target mkdir() handler. 2455513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2465513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2475513SMichael.Adler@intel.com 248511SN/A/// Target rename() handler. 2491706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2503114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2511706SN/A 2521706SN/A 2531706SN/A/// Target truncate() handler. 2541706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2553114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2561706SN/A 2571706SN/A 2581706SN/A/// Target ftruncate() handler. 2591706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2611706SN/A 262511SN/A 2635513SMichael.Adler@intel.com/// Target umask() handler. 2645513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2655513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2665513SMichael.Adler@intel.com 2675513SMichael.Adler@intel.com 2681999SN/A/// Target chown() handler. 2691999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2703114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2711999SN/A 2721999SN/A 2731999SN/A/// Target fchown() handler. 2741999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2753114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2761999SN/A 2773079Sstever@eecs.umich.edu/// Target dup() handler. 2783079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2793114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2803079Sstever@eecs.umich.edu 2812093SN/A/// Target fnctl() handler. 2822093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2833114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2842093SN/A 2852687Sksewell@umich.edu/// Target fcntl64() handler. 2862687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2873114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2882687Sksewell@umich.edu 2892238SN/A/// Target setuid() handler. 2902238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2913114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2922238SN/A 2932238SN/A/// Target getpid() handler. 2942238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2953114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2962238SN/A 2972238SN/A/// Target getuid() handler. 2982238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2993114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3002238SN/A 3012238SN/A/// Target getgid() handler. 3022238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 3033114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3042238SN/A 3052238SN/A/// Target getppid() handler. 3062238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 3073114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3082238SN/A 3092238SN/A/// Target geteuid() handler. 3102238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3113114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3122238SN/A 3132238SN/A/// Target getegid() handler. 3142238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3153114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3162238SN/A 3176109Ssanchezd@stanford.edu/// Target clone() handler. 3186109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3196109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3202238SN/A 3212238SN/A 3222238SN/A/// Pseudo Funcs - These functions use a different return convension, 3232238SN/A/// returning a second value in a register other than the normal return register 3242238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3253114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3262238SN/A 3272238SN/A/// Target getpidPseudo() handler. 3282238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3293114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3302238SN/A 3312238SN/A/// Target getuidPseudo() handler. 3322238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3333114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3342238SN/A 3352238SN/A/// Target getgidPseudo() handler. 3362238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3373114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3382238SN/A 3392238SN/A 3401354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 3411354SN/Aconst int one_million = 1000000; 3421354SN/A 3431354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3441354SN/A/// by my reckoning. We want to keep this a constant (not use the 3451354SN/A/// real-world time) to keep simulations repeatable. 3461354SN/Aconst unsigned seconds_since_epoch = 1000000000; 3471354SN/A 3481354SN/A/// Helper function to convert current elapsed time to seconds and 3491354SN/A/// microseconds. 3501354SN/Atemplate <class T1, class T2> 3511354SN/Avoid 3521354SN/AgetElapsedTime(T1 &sec, T2 &usec) 3531354SN/A{ 3541609SN/A int elapsed_usecs = curTick / Clock::Int::us; 3551354SN/A sec = elapsed_usecs / one_million; 3561354SN/A usec = elapsed_usecs % one_million; 3571354SN/A} 3581354SN/A 359360SN/A////////////////////////////////////////////////////////////////////// 360360SN/A// 361360SN/A// The following emulation functions are generic, but need to be 362360SN/A// templated to account for differences in types, constants, etc. 363360SN/A// 364360SN/A////////////////////////////////////////////////////////////////////// 365360SN/A 3663113Sgblack@eecs.umich.edu#if NO_STAT64 3673113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 3683113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 3693113Sgblack@eecs.umich.edu#else 3703113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 3713113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 3723113Sgblack@eecs.umich.edu#endif 3733113Sgblack@eecs.umich.edu 3743113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 3753113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 3763113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 3773113Sgblack@eecs.umich.edu 3783113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 3793113Sgblack@eecs.umich.edustatic void 3803113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 3813113Sgblack@eecs.umich.edu{ 3824189Sgblack@eecs.umich.edu using namespace TheISA; 3834189Sgblack@eecs.umich.edu 3843113Sgblack@eecs.umich.edu if (fakeTTY) 3853113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 3863113Sgblack@eecs.umich.edu else 3873113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 3883113Sgblack@eecs.umich.edu tgt->st_dev = htog(tgt->st_dev); 3893113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 3903113Sgblack@eecs.umich.edu tgt->st_ino = htog(tgt->st_ino); 3913277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 3925515SMichael.Adler@intel.com if (fakeTTY) { 3935515SMichael.Adler@intel.com // Claim to be a character device 3945515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 3955515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 3965515SMichael.Adler@intel.com } 3973277Sgblack@eecs.umich.edu tgt->st_mode = htog(tgt->st_mode); 3983277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 3993277Sgblack@eecs.umich.edu tgt->st_nlink = htog(tgt->st_nlink); 4003277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4013277Sgblack@eecs.umich.edu tgt->st_uid = htog(tgt->st_uid); 4023277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4033277Sgblack@eecs.umich.edu tgt->st_gid = htog(tgt->st_gid); 4043113Sgblack@eecs.umich.edu if (fakeTTY) 4053113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4063113Sgblack@eecs.umich.edu else 4073113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4083113Sgblack@eecs.umich.edu tgt->st_rdev = htog(tgt->st_rdev); 4093113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4103113Sgblack@eecs.umich.edu tgt->st_size = htog(tgt->st_size); 4113114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4123113Sgblack@eecs.umich.edu tgt->st_atimeX = htog(tgt->st_atimeX); 4133114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4143113Sgblack@eecs.umich.edu tgt->st_mtimeX = htog(tgt->st_mtimeX); 4153114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4163113Sgblack@eecs.umich.edu tgt->st_ctimeX = htog(tgt->st_ctimeX); 4174061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4184061Sgblack@eecs.umich.edu // consistently across different hosts. 4194061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4203113Sgblack@eecs.umich.edu tgt->st_blksize = htog(tgt->st_blksize); 4213113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4223113Sgblack@eecs.umich.edu tgt->st_blocks = htog(tgt->st_blocks); 4233113Sgblack@eecs.umich.edu} 4243113Sgblack@eecs.umich.edu 4253113Sgblack@eecs.umich.edu// Same for stat64 4263113Sgblack@eecs.umich.edu 4273113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 4283113Sgblack@eecs.umich.edustatic void 4293113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4303113Sgblack@eecs.umich.edu{ 4314189Sgblack@eecs.umich.edu using namespace TheISA; 4324189Sgblack@eecs.umich.edu 4333113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4343113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4353113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 4363113Sgblack@eecs.umich.edu tgt->st_atime_nsec = htog(tgt->st_atime_nsec); 4373113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 4383113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = htog(tgt->st_mtime_nsec); 4393113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 4403113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = htog(tgt->st_ctime_nsec); 4413113Sgblack@eecs.umich.edu#else 4423113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 4433113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 4443113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 4453113Sgblack@eecs.umich.edu#endif 4463113Sgblack@eecs.umich.edu} 4473113Sgblack@eecs.umich.edu 4483113Sgblack@eecs.umich.edu//Here are a couple convenience functions 4493113Sgblack@eecs.umich.edutemplate<class OS> 4503113Sgblack@eecs.umich.edustatic void 4513113Sgblack@eecs.umich.educopyOutStatBuf(TranslatingPort * mem, Addr addr, 4523113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 4533113Sgblack@eecs.umich.edu{ 4543113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 4553113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 4563113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 4573113Sgblack@eecs.umich.edu tgt.copyOut(mem); 4583113Sgblack@eecs.umich.edu} 4593113Sgblack@eecs.umich.edu 4603113Sgblack@eecs.umich.edutemplate<class OS> 4613113Sgblack@eecs.umich.edustatic void 4623113Sgblack@eecs.umich.educopyOutStat64Buf(TranslatingPort * mem, Addr addr, 4633113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 4643113Sgblack@eecs.umich.edu{ 4653113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 4663113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 4673113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 4683113Sgblack@eecs.umich.edu tgt.copyOut(mem); 4693113Sgblack@eecs.umich.edu} 4703113Sgblack@eecs.umich.edu 471378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 472378SN/A/// only to find out if their stdout is a tty, to determine whether to 473378SN/A/// do line or block buffering. 474360SN/Atemplate <class OS> 4751450SN/ASyscallReturn 4763114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 4772680Sktlim@umich.edu ThreadContext *tc) 478360SN/A{ 4795958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 4805958Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, 1); 481360SN/A 4821969SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 483360SN/A 484360SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 485360SN/A // doesn't map to any simulator fd: not a valid target fd 4861458SN/A return -EBADF; 487360SN/A } 488360SN/A 489360SN/A switch (req) { 4904131Sbinkertn@umich.edu case OS::TIOCISATTY_: 4914131Sbinkertn@umich.edu case OS::TIOCGETP_: 4924131Sbinkertn@umich.edu case OS::TIOCSETP_: 4934131Sbinkertn@umich.edu case OS::TIOCSETN_: 4944131Sbinkertn@umich.edu case OS::TIOCSETC_: 4954131Sbinkertn@umich.edu case OS::TIOCGETC_: 4964131Sbinkertn@umich.edu case OS::TIOCGETS_: 4974131Sbinkertn@umich.edu case OS::TIOCGETA_: 4981458SN/A return -ENOTTY; 499360SN/A 500360SN/A default: 5011706SN/A fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ 0x%llx\n", 5022680Sktlim@umich.edu fd, req, tc->readPC()); 503360SN/A } 504360SN/A} 505360SN/A 506378SN/A/// Target open() handler. 507360SN/Atemplate <class OS> 5081450SN/ASyscallReturn 5093114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5102680Sktlim@umich.edu ThreadContext *tc) 511360SN/A{ 512360SN/A std::string path; 513360SN/A 5145958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 5151458SN/A return -EFAULT; 516360SN/A 517360SN/A if (path == "/dev/sysdev0") { 518360SN/A // This is a memory-mapped high-resolution timer device on Alpha. 519360SN/A // We don't support it, so just punt. 5201706SN/A warn("Ignoring open(%s, ...)\n", path); 5211458SN/A return -ENOENT; 522360SN/A } 523360SN/A 5245958Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, 1); 5255958Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, 2); 526360SN/A int hostFlags = 0; 527360SN/A 528360SN/A // translate open flags 529360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 530360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 531360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 532360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 533360SN/A } 534360SN/A } 535360SN/A 536360SN/A // any target flags left? 537360SN/A if (tgtFlags != 0) 5381706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 539360SN/A 540360SN/A#ifdef __CYGWIN32__ 541360SN/A hostFlags |= O_BINARY; 542360SN/A#endif 543360SN/A 5443669Sbinkertn@umich.edu // Adjust path for current working directory 5453669Sbinkertn@umich.edu path = process->fullPath(path); 5463669Sbinkertn@umich.edu 5471706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 5481706SN/A 5495795Ssaidi@eecs.umich.edu int fd; 5505795Ssaidi@eecs.umich.edu if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") || 5515795Ssaidi@eecs.umich.edu !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) { 5525795Ssaidi@eecs.umich.edu // It's a proc/sys entery and requires special handling 5535795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 5545795Ssaidi@eecs.umich.edu return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false); 5555795Ssaidi@eecs.umich.edu } else { 5565795Ssaidi@eecs.umich.edu // open the file 5575795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 5585795Ssaidi@eecs.umich.edu return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false); 5595795Ssaidi@eecs.umich.edu } 560360SN/A 561360SN/A} 562360SN/A 5636640Svince@csl.cornell.edu/// Target sysinfo() handler. 5646640Svince@csl.cornell.edutemplate <class OS> 5656640Svince@csl.cornell.eduSyscallReturn 5666640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5676640Svince@csl.cornell.edu ThreadContext *tc) 5686640Svince@csl.cornell.edu{ 5696640Svince@csl.cornell.edu 5706640Svince@csl.cornell.edu TypedBufferArg<typename OS::tgt_sysinfo> sysinfo(process->getSyscallArg(tc, 0)); 5716640Svince@csl.cornell.edu 5726640Svince@csl.cornell.edu sysinfo->uptime=seconds_since_epoch; 5736640Svince@csl.cornell.edu sysinfo->totalram=process->system->memSize(); 5746640Svince@csl.cornell.edu 5756640Svince@csl.cornell.edu sysinfo.copyOut(tc->getMemPort()); 5766640Svince@csl.cornell.edu 5776640Svince@csl.cornell.edu return 0; 5786640Svince@csl.cornell.edu} 579360SN/A 5801999SN/A/// Target chmod() handler. 5811999SN/Atemplate <class OS> 5821999SN/ASyscallReturn 5833114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5842680Sktlim@umich.edu ThreadContext *tc) 5851999SN/A{ 5861999SN/A std::string path; 5871999SN/A 5885958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 5891999SN/A return -EFAULT; 5901999SN/A 5915958Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, 1); 5921999SN/A mode_t hostMode = 0; 5931999SN/A 5941999SN/A // XXX translate mode flags via OS::something??? 5951999SN/A hostMode = mode; 5961999SN/A 5973669Sbinkertn@umich.edu // Adjust path for current working directory 5983669Sbinkertn@umich.edu path = process->fullPath(path); 5993669Sbinkertn@umich.edu 6001999SN/A // do the chmod 6011999SN/A int result = chmod(path.c_str(), hostMode); 6021999SN/A if (result < 0) 6032218SN/A return -errno; 6041999SN/A 6051999SN/A return 0; 6061999SN/A} 6071999SN/A 6081999SN/A 6091999SN/A/// Target fchmod() handler. 6101999SN/Atemplate <class OS> 6111999SN/ASyscallReturn 6123114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6132680Sktlim@umich.edu ThreadContext *tc) 6141999SN/A{ 6155958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 6161999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 6171999SN/A // doesn't map to any simulator fd: not a valid target fd 6181999SN/A return -EBADF; 6191999SN/A } 6201999SN/A 6215958Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, 1); 6221999SN/A mode_t hostMode = 0; 6231999SN/A 6241999SN/A // XXX translate mode flags via OS::someting??? 6251999SN/A hostMode = mode; 6261999SN/A 6271999SN/A // do the fchmod 6281999SN/A int result = fchmod(process->sim_fd(fd), hostMode); 6291999SN/A if (result < 0) 6302218SN/A return -errno; 6311999SN/A 6321999SN/A return 0; 6331999SN/A} 6341999SN/A 6355877Shsul@eecs.umich.edu/// Target mremap() handler. 6365877Shsul@eecs.umich.edutemplate <class OS> 6375877Shsul@eecs.umich.eduSyscallReturn 6385877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 6395877Shsul@eecs.umich.edu{ 6405958Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, 0); 6415958Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, 1); 6425958Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, 2); 6435958Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, 3); 6445877Shsul@eecs.umich.edu 6455877Shsul@eecs.umich.edu if ((start % TheISA::VMPageSize != 0) || 6465877Shsul@eecs.umich.edu (new_length % TheISA::VMPageSize != 0)) { 6475877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 6485877Shsul@eecs.umich.edu return -EINVAL; 6495877Shsul@eecs.umich.edu } 6505877Shsul@eecs.umich.edu 6515877Shsul@eecs.umich.edu if (new_length > old_length) { 6525877Shsul@eecs.umich.edu if ((start + old_length) == process->mmap_end) { 6535877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 6545877Shsul@eecs.umich.edu process->pTable->allocate(process->mmap_end, diff); 6555877Shsul@eecs.umich.edu process->mmap_end += diff; 6565877Shsul@eecs.umich.edu return start; 6575877Shsul@eecs.umich.edu } else { 6585877Shsul@eecs.umich.edu // sys/mman.h defined MREMAP_MAYMOVE 6595877Shsul@eecs.umich.edu if (!(flags & 1)) { 6605877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 6615877Shsul@eecs.umich.edu return -ENOMEM; 6625877Shsul@eecs.umich.edu } else { 6635877Shsul@eecs.umich.edu process->pTable->remap(start, old_length, process->mmap_end); 6645877Shsul@eecs.umich.edu warn("mremapping to totally new vaddr %08p-%08p, adding %d\n", 6655877Shsul@eecs.umich.edu process->mmap_end, process->mmap_end + new_length, new_length); 6665877Shsul@eecs.umich.edu start = process->mmap_end; 6675877Shsul@eecs.umich.edu // add on the remaining unallocated pages 6685877Shsul@eecs.umich.edu process->pTable->allocate(start + old_length, new_length - old_length); 6695877Shsul@eecs.umich.edu process->mmap_end += new_length; 6705877Shsul@eecs.umich.edu warn("returning %08p as start\n", start); 6715877Shsul@eecs.umich.edu return start; 6725877Shsul@eecs.umich.edu } 6735877Shsul@eecs.umich.edu } 6745877Shsul@eecs.umich.edu } else { 6755877Shsul@eecs.umich.edu process->pTable->deallocate(start + new_length, old_length - 6765877Shsul@eecs.umich.edu new_length); 6775877Shsul@eecs.umich.edu return start; 6785877Shsul@eecs.umich.edu } 6795877Shsul@eecs.umich.edu} 6801999SN/A 681378SN/A/// Target stat() handler. 682360SN/Atemplate <class OS> 6831450SN/ASyscallReturn 6843114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6852680Sktlim@umich.edu ThreadContext *tc) 686360SN/A{ 687360SN/A std::string path; 688360SN/A 6895958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 6902400SN/A return -EFAULT; 691360SN/A 6923669Sbinkertn@umich.edu // Adjust path for current working directory 6933669Sbinkertn@umich.edu path = process->fullPath(path); 6943669Sbinkertn@umich.edu 695360SN/A struct stat hostBuf; 696360SN/A int result = stat(path.c_str(), &hostBuf); 697360SN/A 698360SN/A if (result < 0) 6992218SN/A return -errno; 700360SN/A 7015958Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7025958Sgblack@eecs.umich.edu &hostBuf); 703360SN/A 7041458SN/A return 0; 705360SN/A} 706360SN/A 707360SN/A 7085074Ssaidi@eecs.umich.edu/// Target stat64() handler. 7095074Ssaidi@eecs.umich.edutemplate <class OS> 7105074Ssaidi@eecs.umich.eduSyscallReturn 7115074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 7125074Ssaidi@eecs.umich.edu ThreadContext *tc) 7135074Ssaidi@eecs.umich.edu{ 7145074Ssaidi@eecs.umich.edu std::string path; 7155074Ssaidi@eecs.umich.edu 7165958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 7175074Ssaidi@eecs.umich.edu return -EFAULT; 7185074Ssaidi@eecs.umich.edu 7195074Ssaidi@eecs.umich.edu // Adjust path for current working directory 7205074Ssaidi@eecs.umich.edu path = process->fullPath(path); 7215074Ssaidi@eecs.umich.edu 7225208Ssaidi@eecs.umich.edu#if NO_STAT64 7235208Ssaidi@eecs.umich.edu struct stat hostBuf; 7245208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 7255208Ssaidi@eecs.umich.edu#else 7265074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 7275074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 7285208Ssaidi@eecs.umich.edu#endif 7295074Ssaidi@eecs.umich.edu 7305074Ssaidi@eecs.umich.edu if (result < 0) 7315074Ssaidi@eecs.umich.edu return -errno; 7325074Ssaidi@eecs.umich.edu 7335958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7345958Sgblack@eecs.umich.edu &hostBuf); 7355074Ssaidi@eecs.umich.edu 7365074Ssaidi@eecs.umich.edu return 0; 7375074Ssaidi@eecs.umich.edu} 7385074Ssaidi@eecs.umich.edu 7395074Ssaidi@eecs.umich.edu 7401999SN/A/// Target fstat64() handler. 7411999SN/Atemplate <class OS> 7421999SN/ASyscallReturn 7433114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 7442680Sktlim@umich.edu ThreadContext *tc) 7451999SN/A{ 7465958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 7471999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 7481999SN/A // doesn't map to any simulator fd: not a valid target fd 7491999SN/A return -EBADF; 7501999SN/A } 7511999SN/A 7522764Sstever@eecs.umich.edu#if NO_STAT64 7532064SN/A struct stat hostBuf; 7542064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 7552064SN/A#else 7562064SN/A struct stat64 hostBuf; 7571999SN/A int result = fstat64(process->sim_fd(fd), &hostBuf); 7582064SN/A#endif 7591999SN/A 7601999SN/A if (result < 0) 7612218SN/A return -errno; 7621999SN/A 7635958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7643114Sgblack@eecs.umich.edu &hostBuf, (fd == 1)); 7651999SN/A 7661999SN/A return 0; 7671999SN/A} 7681999SN/A 7691999SN/A 770378SN/A/// Target lstat() handler. 771360SN/Atemplate <class OS> 7721450SN/ASyscallReturn 7733114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7742680Sktlim@umich.edu ThreadContext *tc) 775360SN/A{ 776360SN/A std::string path; 777360SN/A 7785958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 7792400SN/A return -EFAULT; 780360SN/A 7813669Sbinkertn@umich.edu // Adjust path for current working directory 7823669Sbinkertn@umich.edu path = process->fullPath(path); 7833669Sbinkertn@umich.edu 784360SN/A struct stat hostBuf; 785360SN/A int result = lstat(path.c_str(), &hostBuf); 786360SN/A 787360SN/A if (result < 0) 7881458SN/A return -errno; 789360SN/A 7905958Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7915958Sgblack@eecs.umich.edu &hostBuf); 792360SN/A 7931458SN/A return 0; 794360SN/A} 795360SN/A 7961999SN/A/// Target lstat64() handler. 7971999SN/Atemplate <class OS> 7981999SN/ASyscallReturn 7993114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 8002680Sktlim@umich.edu ThreadContext *tc) 8011999SN/A{ 8021999SN/A std::string path; 8031999SN/A 8045958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 8052400SN/A return -EFAULT; 8061999SN/A 8073669Sbinkertn@umich.edu // Adjust path for current working directory 8083669Sbinkertn@umich.edu path = process->fullPath(path); 8093669Sbinkertn@umich.edu 8102764Sstever@eecs.umich.edu#if NO_STAT64 8112064SN/A struct stat hostBuf; 8122064SN/A int result = lstat(path.c_str(), &hostBuf); 8132064SN/A#else 8141999SN/A struct stat64 hostBuf; 8151999SN/A int result = lstat64(path.c_str(), &hostBuf); 8162064SN/A#endif 8171999SN/A 8181999SN/A if (result < 0) 8191999SN/A return -errno; 8201999SN/A 8215958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 8225958Sgblack@eecs.umich.edu &hostBuf); 8231999SN/A 8241999SN/A return 0; 8251999SN/A} 8261999SN/A 827378SN/A/// Target fstat() handler. 828360SN/Atemplate <class OS> 8291450SN/ASyscallReturn 8303114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8312680Sktlim@umich.edu ThreadContext *tc) 832360SN/A{ 8335958Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, 0)); 834360SN/A 8351969SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 836360SN/A 837360SN/A if (fd < 0) 8381458SN/A return -EBADF; 839360SN/A 840360SN/A struct stat hostBuf; 841360SN/A int result = fstat(fd, &hostBuf); 842360SN/A 843360SN/A if (result < 0) 8441458SN/A return -errno; 845360SN/A 8465958Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 8473114Sgblack@eecs.umich.edu &hostBuf, (fd == 1)); 8482021SN/A 8491458SN/A return 0; 850360SN/A} 851360SN/A 852360SN/A 8531706SN/A/// Target statfs() handler. 8541706SN/Atemplate <class OS> 8551706SN/ASyscallReturn 8563114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8572680Sktlim@umich.edu ThreadContext *tc) 8581706SN/A{ 8591706SN/A std::string path; 8601706SN/A 8615958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 8622400SN/A return -EFAULT; 8631706SN/A 8643669Sbinkertn@umich.edu // Adjust path for current working directory 8653669Sbinkertn@umich.edu path = process->fullPath(path); 8663669Sbinkertn@umich.edu 8671706SN/A struct statfs hostBuf; 8681706SN/A int result = statfs(path.c_str(), &hostBuf); 8691706SN/A 8701706SN/A if (result < 0) 8712218SN/A return -errno; 8721706SN/A 8733114Sgblack@eecs.umich.edu OS::copyOutStatfsBuf(tc->getMemPort(), 8745958Sgblack@eecs.umich.edu (Addr)(process->getSyscallArg(tc, 1)), &hostBuf); 8751706SN/A 8761706SN/A return 0; 8771706SN/A} 8781706SN/A 8791706SN/A 8801706SN/A/// Target fstatfs() handler. 8811706SN/Atemplate <class OS> 8821706SN/ASyscallReturn 8833114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8842680Sktlim@umich.edu ThreadContext *tc) 8851706SN/A{ 8865958Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, 0)); 8871706SN/A 8881706SN/A if (fd < 0) 8891706SN/A return -EBADF; 8901706SN/A 8911706SN/A struct statfs hostBuf; 8921706SN/A int result = fstatfs(fd, &hostBuf); 8931706SN/A 8941706SN/A if (result < 0) 8952218SN/A return -errno; 8961706SN/A 8975958Sgblack@eecs.umich.edu OS::copyOutStatfsBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), 8983114Sgblack@eecs.umich.edu &hostBuf); 8991706SN/A 9001706SN/A return 0; 9011706SN/A} 9021706SN/A 9031706SN/A 9041999SN/A/// Target writev() handler. 9051999SN/Atemplate <class OS> 9061999SN/ASyscallReturn 9073114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9082680Sktlim@umich.edu ThreadContext *tc) 9091999SN/A{ 9105958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 9111999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 9121999SN/A // doesn't map to any simulator fd: not a valid target fd 9131999SN/A return -EBADF; 9141999SN/A } 9151999SN/A 9162680Sktlim@umich.edu TranslatingPort *p = tc->getMemPort(); 9175958Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, 1); 9185958Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, 2); 9191999SN/A struct iovec hiov[count]; 9206227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 9211999SN/A typename OS::tgt_iovec tiov; 9222461SN/A 9232461SN/A p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 9242461SN/A (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 9252091SN/A hiov[i].iov_len = gtoh(tiov.iov_len); 9261999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 9272461SN/A p->readBlob(gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 9282461SN/A hiov[i].iov_len); 9291999SN/A } 9301999SN/A 9311999SN/A int result = writev(process->sim_fd(fd), hiov, count); 9321999SN/A 9336227Snate@binkert.org for (size_t i = 0; i < count; ++i) 9341999SN/A delete [] (char *)hiov[i].iov_base; 9351999SN/A 9361999SN/A if (result < 0) 9372218SN/A return -errno; 9381999SN/A 9391999SN/A return 0; 9401999SN/A} 9411999SN/A 9421999SN/A 943378SN/A/// Target mmap() handler. 944378SN/A/// 945378SN/A/// We don't really handle mmap(). If the target is mmaping an 946378SN/A/// anonymous region or /dev/zero, we can get away with doing basically 947378SN/A/// nothing (since memory is initialized to zero and the simulator 948378SN/A/// doesn't really check addresses anyway). Always print a warning, 949378SN/A/// since this could be seriously broken if we're not mapping 950378SN/A/// /dev/zero. 951360SN/A// 952378SN/A/// Someday we should explicitly check for /dev/zero in open, flag the 953378SN/A/// file descriptor, and fail (or implement!) a non-anonymous mmap to 954378SN/A/// anything else. 955360SN/Atemplate <class OS> 9561450SN/ASyscallReturn 9573114Sgblack@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 958360SN/A{ 9595958Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, 0); 9605958Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, 1); 9615958Sgblack@eecs.umich.edu // int prot = p->getSyscallArg(tc, 2); 9625958Sgblack@eecs.umich.edu int flags = p->getSyscallArg(tc, 3); 9635958Sgblack@eecs.umich.edu // int fd = p->sim_fd(p->getSyscallArg(tc, 4)); 9645958Sgblack@eecs.umich.edu // int offset = p->getSyscallArg(tc, 5); 965360SN/A 9665877Shsul@eecs.umich.edu 9672544SN/A if ((start % TheISA::VMPageSize) != 0 || 9682544SN/A (length % TheISA::VMPageSize) != 0) { 9692544SN/A warn("mmap failing: arguments not page-aligned: " 9702544SN/A "start 0x%x length 0x%x", 9712544SN/A start, length); 9722544SN/A return -EINVAL; 973360SN/A } 974360SN/A 9752544SN/A if (start != 0) { 9762544SN/A warn("mmap: ignoring suggested map address 0x%x, using 0x%x", 9772544SN/A start, p->mmap_end); 9782544SN/A } 9792544SN/A 9802544SN/A // pick next address from our "mmap region" 9816672Sgblack@eecs.umich.edu if (OS::mmapGrowsDown()) { 9826672Sgblack@eecs.umich.edu start = p->mmap_end - length; 9836672Sgblack@eecs.umich.edu p->mmap_end = start; 9846672Sgblack@eecs.umich.edu } else { 9856672Sgblack@eecs.umich.edu start = p->mmap_end; 9866672Sgblack@eecs.umich.edu p->mmap_end += length; 9876672Sgblack@eecs.umich.edu } 9882544SN/A p->pTable->allocate(start, length); 9892544SN/A 9902553SN/A if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 9911969SN/A warn("allowing mmap of file @ fd %d. " 9925958Sgblack@eecs.umich.edu "This will break if not /dev/zero.", p->getSyscallArg(tc, 4)); 993360SN/A } 994360SN/A 9951458SN/A return start; 996360SN/A} 997360SN/A 998378SN/A/// Target getrlimit() handler. 999360SN/Atemplate <class OS> 10001450SN/ASyscallReturn 10013114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10022680Sktlim@umich.edu ThreadContext *tc) 1003360SN/A{ 10045958Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, 0); 10055958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, 1)); 1006360SN/A 1007360SN/A switch (resource) { 10082064SN/A case OS::TGT_RLIMIT_STACK: 10095877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 10102064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 10112091SN/A rlp->rlim_cur = htog(rlp->rlim_cur); 10122091SN/A rlp->rlim_max = htog(rlp->rlim_max); 10132064SN/A break; 1014360SN/A 10155877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 10165877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 10175877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 10185877Shsul@eecs.umich.edu rlp->rlim_cur = htog(rlp->rlim_cur); 10195877Shsul@eecs.umich.edu rlp->rlim_max = htog(rlp->rlim_max); 10205877Shsul@eecs.umich.edu break; 10215877Shsul@eecs.umich.edu 10222064SN/A default: 10232064SN/A std::cerr << "getrlimitFunc: unimplemented resource " << resource 10242064SN/A << std::endl; 10252064SN/A abort(); 10262064SN/A break; 1027360SN/A } 1028360SN/A 10292680Sktlim@umich.edu rlp.copyOut(tc->getMemPort()); 10301458SN/A return 0; 1031360SN/A} 1032360SN/A 1033378SN/A/// Target gettimeofday() handler. 1034360SN/Atemplate <class OS> 10351450SN/ASyscallReturn 10363114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10372680Sktlim@umich.edu ThreadContext *tc) 1038360SN/A{ 10395958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, 0)); 1040360SN/A 1041360SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1042360SN/A tp->tv_sec += seconds_since_epoch; 10436109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 10446109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1045360SN/A 10462680Sktlim@umich.edu tp.copyOut(tc->getMemPort()); 1047360SN/A 10481458SN/A return 0; 1049360SN/A} 1050360SN/A 1051360SN/A 10521999SN/A/// Target utimes() handler. 10531999SN/Atemplate <class OS> 10541999SN/ASyscallReturn 10553114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10562680Sktlim@umich.edu ThreadContext *tc) 10571999SN/A{ 10581999SN/A std::string path; 10591999SN/A 10605958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 10612400SN/A return -EFAULT; 10621999SN/A 10635958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> tp(process->getSyscallArg(tc, 1)); 10642680Sktlim@umich.edu tp.copyIn(tc->getMemPort()); 10651999SN/A 10661999SN/A struct timeval hostTimeval[2]; 10671999SN/A for (int i = 0; i < 2; ++i) 10681999SN/A { 10692091SN/A hostTimeval[i].tv_sec = gtoh((*tp)[i].tv_sec); 10702091SN/A hostTimeval[i].tv_usec = gtoh((*tp)[i].tv_usec); 10711999SN/A } 10723669Sbinkertn@umich.edu 10733669Sbinkertn@umich.edu // Adjust path for current working directory 10743669Sbinkertn@umich.edu path = process->fullPath(path); 10753669Sbinkertn@umich.edu 10761999SN/A int result = utimes(path.c_str(), hostTimeval); 10771999SN/A 10781999SN/A if (result < 0) 10791999SN/A return -errno; 10801999SN/A 10811999SN/A return 0; 10821999SN/A} 1083378SN/A/// Target getrusage() function. 1084360SN/Atemplate <class OS> 10851450SN/ASyscallReturn 10863114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10872680Sktlim@umich.edu ThreadContext *tc) 1088360SN/A{ 10895958Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, 0); // THREAD, SELF, or CHILDREN 10905958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, 1)); 1091360SN/A 10923670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 10933670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1094360SN/A rup->ru_stime.tv_sec = 0; 1095360SN/A rup->ru_stime.tv_usec = 0; 1096360SN/A rup->ru_maxrss = 0; 1097360SN/A rup->ru_ixrss = 0; 1098360SN/A rup->ru_idrss = 0; 1099360SN/A rup->ru_isrss = 0; 1100360SN/A rup->ru_minflt = 0; 1101360SN/A rup->ru_majflt = 0; 1102360SN/A rup->ru_nswap = 0; 1103360SN/A rup->ru_inblock = 0; 1104360SN/A rup->ru_oublock = 0; 1105360SN/A rup->ru_msgsnd = 0; 1106360SN/A rup->ru_msgrcv = 0; 1107360SN/A rup->ru_nsignals = 0; 1108360SN/A rup->ru_nvcsw = 0; 1109360SN/A rup->ru_nivcsw = 0; 1110360SN/A 11113670Sbinkertn@umich.edu switch (who) { 11123670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 11133670Sbinkertn@umich.edu getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 11143670Sbinkertn@umich.edu rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec); 11153670Sbinkertn@umich.edu rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec); 11163670Sbinkertn@umich.edu break; 11173670Sbinkertn@umich.edu 11183670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 11193670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 11203670Sbinkertn@umich.edu break; 11213670Sbinkertn@umich.edu 11223670Sbinkertn@umich.edu default: 11233670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 11243670Sbinkertn@umich.edu // plow ahead 11253670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 11263670Sbinkertn@umich.edu who); 11273670Sbinkertn@umich.edu } 11283670Sbinkertn@umich.edu 11292680Sktlim@umich.edu rup.copyOut(tc->getMemPort()); 1130360SN/A 11311458SN/A return 0; 1132360SN/A} 1133360SN/A 11342553SN/A 11352553SN/A 11362553SN/A 11371354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1138