syscall_emul.hh revision 5958
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 535543Ssaidi@eecs.umich.edu#include "sim/host.hh" // for Addr 542474SN/A#include "base/chunk_generator.hh" 555543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 562462SN/A#include "base/misc.hh" 571354SN/A#include "base/trace.hh" 582474SN/A#include "cpu/base.hh" 592680Sktlim@umich.edu#include "cpu/thread_context.hh" 602474SN/A#include "mem/translating_port.hh" 612474SN/A#include "mem/page_table.hh" 621354SN/A#include "sim/process.hh" 63360SN/A 64360SN/A/// 65360SN/A/// System call descriptor. 66360SN/A/// 67360SN/Aclass SyscallDesc { 68360SN/A 69360SN/A public: 70360SN/A 71378SN/A /// Typedef for target syscall handler functions. 721450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 733114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 74360SN/A 755543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 765543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 775543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 78360SN/A 79360SN/A /// Flag values for controlling syscall behavior. 80360SN/A enum Flags { 81360SN/A /// Don't set return regs according to funcPtr return value. 82360SN/A /// Used for syscalls with non-standard return conventions 832680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 84360SN/A /// sigreturn). 85360SN/A SuppressReturnValue = 1 86360SN/A }; 87360SN/A 88360SN/A /// Constructor. 89360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 90360SN/A : name(_name), funcPtr(_funcPtr), flags(_flags) 91360SN/A { 92360SN/A } 93360SN/A 94360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 953114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 96360SN/A}; 97360SN/A 98360SN/A 99360SN/Aclass BaseBufferArg { 100360SN/A 101360SN/A public: 102360SN/A 103360SN/A BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size) 104360SN/A { 105360SN/A bufPtr = new uint8_t[size]; 106360SN/A // clear out buffer: in case we only partially populate this, 107360SN/A // and then do a copyOut(), we want to make sure we don't 108360SN/A // introduce any random junk into the simulated address space 109360SN/A memset(bufPtr, 0, size); 110360SN/A } 111360SN/A 112360SN/A virtual ~BaseBufferArg() { delete [] bufPtr; } 113360SN/A 114360SN/A // 115360SN/A // copy data into simulator space (read from target memory) 116360SN/A // 1172400SN/A virtual bool copyIn(TranslatingPort *memport) 118360SN/A { 1192461SN/A memport->readBlob(addr, bufPtr, size); 1205543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 121360SN/A } 122360SN/A 123360SN/A // 124360SN/A // copy data out of simulator space (write to target memory) 125360SN/A // 1262400SN/A virtual bool copyOut(TranslatingPort *memport) 127360SN/A { 1282461SN/A memport->writeBlob(addr, bufPtr, size); 1295543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 130360SN/A } 131360SN/A 132360SN/A protected: 133360SN/A Addr addr; 134360SN/A int size; 135360SN/A uint8_t *bufPtr; 136360SN/A}; 137360SN/A 138360SN/A 139360SN/Aclass BufferArg : public BaseBufferArg 140360SN/A{ 141360SN/A public: 142360SN/A BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { } 1435543Ssaidi@eecs.umich.edu void *bufferPtr() { return bufPtr; } 144360SN/A}; 145360SN/A 146360SN/Atemplate <class T> 147360SN/Aclass TypedBufferArg : public BaseBufferArg 148360SN/A{ 149360SN/A public: 150360SN/A // user can optionally specify a specific number of bytes to 151360SN/A // allocate to deal with those structs that have variable-size 152360SN/A // arrays at the end 153360SN/A TypedBufferArg(Addr _addr, int _size = sizeof(T)) 154360SN/A : BaseBufferArg(_addr, _size) 155360SN/A { } 156360SN/A 157360SN/A // type case 158360SN/A operator T*() { return (T *)bufPtr; } 159360SN/A 160360SN/A // dereference operators 1615543Ssaidi@eecs.umich.edu T &operator*() { return *((T *)bufPtr); } 1625543Ssaidi@eecs.umich.edu T* operator->() { return (T *)bufPtr; } 163502SN/A T &operator[](int i) { return ((T *)bufPtr)[i]; } 164360SN/A}; 165360SN/A 166360SN/A////////////////////////////////////////////////////////////////////// 167360SN/A// 168360SN/A// The following emulation functions are generic enough that they 169360SN/A// don't need to be recompiled for different emulated OS's. They are 170360SN/A// defined in sim/syscall_emul.cc. 171360SN/A// 172360SN/A////////////////////////////////////////////////////////////////////// 173360SN/A 174360SN/A 175378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1761706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1773114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 178378SN/A 179378SN/A/// Handler for unimplemented syscalls that we never intend to 180378SN/A/// implement (signal handling, etc.) and should not affect the correct 181378SN/A/// behavior of the program. Print a warning only if the appropriate 182378SN/A/// trace flag is enabled. Return success to the target program. 1831706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 185360SN/A 186378SN/A/// Target exit() handler: terminate simulation. 1871706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1883114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 189378SN/A 190378SN/A/// Target getpagesize() handler. 1911706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1923114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 193378SN/A 1945748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1955748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1965748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 197378SN/A 198378SN/A/// Target close() handler. 1991706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 2003114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 201378SN/A 202378SN/A/// Target read() handler. 2031706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 2043114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 205378SN/A 206378SN/A/// Target write() handler. 2071706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 2083114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 209378SN/A 210378SN/A/// Target lseek() handler. 2111706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 2123114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 213378SN/A 2144118Sgblack@eecs.umich.edu/// Target _llseek() handler. 2154118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 2164118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2174118Sgblack@eecs.umich.edu 218378SN/A/// Target munmap() handler. 2191706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2203114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 221378SN/A 222378SN/A/// Target gethostname() handler. 2231706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 225360SN/A 2265513SMichael.Adler@intel.com/// Target getcwd() handler. 2275513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2285513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2295513SMichael.Adler@intel.com 2305513SMichael.Adler@intel.com/// Target unlink() handler. 2315513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2325513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2335513SMichael.Adler@intel.com 234511SN/A/// Target unlink() handler. 2351706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2363114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 237511SN/A 2385513SMichael.Adler@intel.com/// Target mkdir() handler. 2395513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2405513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2415513SMichael.Adler@intel.com 242511SN/A/// Target rename() handler. 2431706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2451706SN/A 2461706SN/A 2471706SN/A/// Target truncate() handler. 2481706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2493114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2501706SN/A 2511706SN/A 2521706SN/A/// Target ftruncate() handler. 2531706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2543114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2551706SN/A 256511SN/A 2575513SMichael.Adler@intel.com/// Target umask() handler. 2585513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2595513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2605513SMichael.Adler@intel.com 2615513SMichael.Adler@intel.com 2621999SN/A/// Target chown() handler. 2631999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2643114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2651999SN/A 2661999SN/A 2671999SN/A/// Target fchown() handler. 2681999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2693114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2701999SN/A 2713079Sstever@eecs.umich.edu/// Target dup() handler. 2723079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2733114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2743079Sstever@eecs.umich.edu 2752093SN/A/// Target fnctl() handler. 2762093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2773114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2782093SN/A 2792687Sksewell@umich.edu/// Target fcntl64() handler. 2802687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2813114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2822687Sksewell@umich.edu 2832238SN/A/// Target setuid() handler. 2842238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2853114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2862238SN/A 2872238SN/A/// Target getpid() handler. 2882238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2893114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2902238SN/A 2912238SN/A/// Target getuid() handler. 2922238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2933114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2942238SN/A 2952238SN/A/// Target getgid() handler. 2962238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2973114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2982238SN/A 2992238SN/A/// Target getppid() handler. 3002238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 3013114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3022238SN/A 3032238SN/A/// Target geteuid() handler. 3042238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3053114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3062238SN/A 3072238SN/A/// Target getegid() handler. 3082238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3093114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3102238SN/A 3112238SN/A 3122238SN/A 3132238SN/A/// Pseudo Funcs - These functions use a different return convension, 3142238SN/A/// returning a second value in a register other than the normal return register 3152238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3163114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3172238SN/A 3182238SN/A/// Target getpidPseudo() handler. 3192238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3203114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3212238SN/A 3222238SN/A/// Target getuidPseudo() handler. 3232238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3252238SN/A 3262238SN/A/// Target getgidPseudo() handler. 3272238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3283114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3292238SN/A 3302238SN/A 3311354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 3321354SN/Aconst int one_million = 1000000; 3331354SN/A 3341354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3351354SN/A/// by my reckoning. We want to keep this a constant (not use the 3361354SN/A/// real-world time) to keep simulations repeatable. 3371354SN/Aconst unsigned seconds_since_epoch = 1000000000; 3381354SN/A 3391354SN/A/// Helper function to convert current elapsed time to seconds and 3401354SN/A/// microseconds. 3411354SN/Atemplate <class T1, class T2> 3421354SN/Avoid 3431354SN/AgetElapsedTime(T1 &sec, T2 &usec) 3441354SN/A{ 3451609SN/A int elapsed_usecs = curTick / Clock::Int::us; 3461354SN/A sec = elapsed_usecs / one_million; 3471354SN/A usec = elapsed_usecs % one_million; 3481354SN/A} 3491354SN/A 350360SN/A////////////////////////////////////////////////////////////////////// 351360SN/A// 352360SN/A// The following emulation functions are generic, but need to be 353360SN/A// templated to account for differences in types, constants, etc. 354360SN/A// 355360SN/A////////////////////////////////////////////////////////////////////// 356360SN/A 3573113Sgblack@eecs.umich.edu#if NO_STAT64 3583113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 3593113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 3603113Sgblack@eecs.umich.edu#else 3613113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 3623113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 3633113Sgblack@eecs.umich.edu#endif 3643113Sgblack@eecs.umich.edu 3653113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 3663113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 3673113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 3683113Sgblack@eecs.umich.edu 3693113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 3703113Sgblack@eecs.umich.edustatic void 3713113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 3723113Sgblack@eecs.umich.edu{ 3734189Sgblack@eecs.umich.edu using namespace TheISA; 3744189Sgblack@eecs.umich.edu 3753113Sgblack@eecs.umich.edu if (fakeTTY) 3763113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 3773113Sgblack@eecs.umich.edu else 3783113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 3793113Sgblack@eecs.umich.edu tgt->st_dev = htog(tgt->st_dev); 3803113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 3813113Sgblack@eecs.umich.edu tgt->st_ino = htog(tgt->st_ino); 3823277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 3835515SMichael.Adler@intel.com if (fakeTTY) { 3845515SMichael.Adler@intel.com // Claim to be a character device 3855515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 3865515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 3875515SMichael.Adler@intel.com } 3883277Sgblack@eecs.umich.edu tgt->st_mode = htog(tgt->st_mode); 3893277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 3903277Sgblack@eecs.umich.edu tgt->st_nlink = htog(tgt->st_nlink); 3913277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 3923277Sgblack@eecs.umich.edu tgt->st_uid = htog(tgt->st_uid); 3933277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 3943277Sgblack@eecs.umich.edu tgt->st_gid = htog(tgt->st_gid); 3953113Sgblack@eecs.umich.edu if (fakeTTY) 3963113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 3973113Sgblack@eecs.umich.edu else 3983113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 3993113Sgblack@eecs.umich.edu tgt->st_rdev = htog(tgt->st_rdev); 4003113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4013113Sgblack@eecs.umich.edu tgt->st_size = htog(tgt->st_size); 4023114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4033113Sgblack@eecs.umich.edu tgt->st_atimeX = htog(tgt->st_atimeX); 4043114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4053113Sgblack@eecs.umich.edu tgt->st_mtimeX = htog(tgt->st_mtimeX); 4063114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4073113Sgblack@eecs.umich.edu tgt->st_ctimeX = htog(tgt->st_ctimeX); 4084061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4094061Sgblack@eecs.umich.edu // consistently across different hosts. 4104061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4113113Sgblack@eecs.umich.edu tgt->st_blksize = htog(tgt->st_blksize); 4123113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4133113Sgblack@eecs.umich.edu tgt->st_blocks = htog(tgt->st_blocks); 4143113Sgblack@eecs.umich.edu} 4153113Sgblack@eecs.umich.edu 4163113Sgblack@eecs.umich.edu// Same for stat64 4173113Sgblack@eecs.umich.edu 4183113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 4193113Sgblack@eecs.umich.edustatic void 4203113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4213113Sgblack@eecs.umich.edu{ 4224189Sgblack@eecs.umich.edu using namespace TheISA; 4234189Sgblack@eecs.umich.edu 4243113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4253113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4263113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 4273113Sgblack@eecs.umich.edu tgt->st_atime_nsec = htog(tgt->st_atime_nsec); 4283113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 4293113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = htog(tgt->st_mtime_nsec); 4303113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 4313113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = htog(tgt->st_ctime_nsec); 4323113Sgblack@eecs.umich.edu#else 4333113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 4343113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 4353113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 4363113Sgblack@eecs.umich.edu#endif 4373113Sgblack@eecs.umich.edu} 4383113Sgblack@eecs.umich.edu 4393113Sgblack@eecs.umich.edu//Here are a couple convenience functions 4403113Sgblack@eecs.umich.edutemplate<class OS> 4413113Sgblack@eecs.umich.edustatic void 4423113Sgblack@eecs.umich.educopyOutStatBuf(TranslatingPort * mem, Addr addr, 4433113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 4443113Sgblack@eecs.umich.edu{ 4453113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 4463113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 4473113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 4483113Sgblack@eecs.umich.edu tgt.copyOut(mem); 4493113Sgblack@eecs.umich.edu} 4503113Sgblack@eecs.umich.edu 4513113Sgblack@eecs.umich.edutemplate<class OS> 4523113Sgblack@eecs.umich.edustatic void 4533113Sgblack@eecs.umich.educopyOutStat64Buf(TranslatingPort * mem, Addr addr, 4543113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 4553113Sgblack@eecs.umich.edu{ 4563113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 4573113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 4583113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 4593113Sgblack@eecs.umich.edu tgt.copyOut(mem); 4603113Sgblack@eecs.umich.edu} 4613113Sgblack@eecs.umich.edu 462378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 463378SN/A/// only to find out if their stdout is a tty, to determine whether to 464378SN/A/// do line or block buffering. 465360SN/Atemplate <class OS> 4661450SN/ASyscallReturn 4673114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 4682680Sktlim@umich.edu ThreadContext *tc) 469360SN/A{ 4705958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 4715958Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, 1); 472360SN/A 4731969SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 474360SN/A 475360SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 476360SN/A // doesn't map to any simulator fd: not a valid target fd 4771458SN/A return -EBADF; 478360SN/A } 479360SN/A 480360SN/A switch (req) { 4814131Sbinkertn@umich.edu case OS::TIOCISATTY_: 4824131Sbinkertn@umich.edu case OS::TIOCGETP_: 4834131Sbinkertn@umich.edu case OS::TIOCSETP_: 4844131Sbinkertn@umich.edu case OS::TIOCSETN_: 4854131Sbinkertn@umich.edu case OS::TIOCSETC_: 4864131Sbinkertn@umich.edu case OS::TIOCGETC_: 4874131Sbinkertn@umich.edu case OS::TIOCGETS_: 4884131Sbinkertn@umich.edu case OS::TIOCGETA_: 4891458SN/A return -ENOTTY; 490360SN/A 491360SN/A default: 4921706SN/A fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ 0x%llx\n", 4932680Sktlim@umich.edu fd, req, tc->readPC()); 494360SN/A } 495360SN/A} 496360SN/A 497378SN/A/// Target open() handler. 498360SN/Atemplate <class OS> 4991450SN/ASyscallReturn 5003114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5012680Sktlim@umich.edu ThreadContext *tc) 502360SN/A{ 503360SN/A std::string path; 504360SN/A 5055958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 5061458SN/A return -EFAULT; 507360SN/A 508360SN/A if (path == "/dev/sysdev0") { 509360SN/A // This is a memory-mapped high-resolution timer device on Alpha. 510360SN/A // We don't support it, so just punt. 5111706SN/A warn("Ignoring open(%s, ...)\n", path); 5121458SN/A return -ENOENT; 513360SN/A } 514360SN/A 5155958Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, 1); 5165958Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, 2); 517360SN/A int hostFlags = 0; 518360SN/A 519360SN/A // translate open flags 520360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 521360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 522360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 523360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 524360SN/A } 525360SN/A } 526360SN/A 527360SN/A // any target flags left? 528360SN/A if (tgtFlags != 0) 5291706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 530360SN/A 531360SN/A#ifdef __CYGWIN32__ 532360SN/A hostFlags |= O_BINARY; 533360SN/A#endif 534360SN/A 5353669Sbinkertn@umich.edu // Adjust path for current working directory 5363669Sbinkertn@umich.edu path = process->fullPath(path); 5373669Sbinkertn@umich.edu 5381706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 5391706SN/A 5405795Ssaidi@eecs.umich.edu int fd; 5415795Ssaidi@eecs.umich.edu if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") || 5425795Ssaidi@eecs.umich.edu !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) { 5435795Ssaidi@eecs.umich.edu // It's a proc/sys entery and requires special handling 5445795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 5455795Ssaidi@eecs.umich.edu return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false); 5465795Ssaidi@eecs.umich.edu } else { 5475795Ssaidi@eecs.umich.edu // open the file 5485795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 5495795Ssaidi@eecs.umich.edu return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false); 5505795Ssaidi@eecs.umich.edu } 551360SN/A 552360SN/A} 553360SN/A 554360SN/A 5551999SN/A/// Target chmod() handler. 5561999SN/Atemplate <class OS> 5571999SN/ASyscallReturn 5583114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5592680Sktlim@umich.edu ThreadContext *tc) 5601999SN/A{ 5611999SN/A std::string path; 5621999SN/A 5635958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 5641999SN/A return -EFAULT; 5651999SN/A 5665958Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, 1); 5671999SN/A mode_t hostMode = 0; 5681999SN/A 5691999SN/A // XXX translate mode flags via OS::something??? 5701999SN/A hostMode = mode; 5711999SN/A 5723669Sbinkertn@umich.edu // Adjust path for current working directory 5733669Sbinkertn@umich.edu path = process->fullPath(path); 5743669Sbinkertn@umich.edu 5751999SN/A // do the chmod 5761999SN/A int result = chmod(path.c_str(), hostMode); 5771999SN/A if (result < 0) 5782218SN/A return -errno; 5791999SN/A 5801999SN/A return 0; 5811999SN/A} 5821999SN/A 5831999SN/A 5841999SN/A/// Target fchmod() handler. 5851999SN/Atemplate <class OS> 5861999SN/ASyscallReturn 5873114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5882680Sktlim@umich.edu ThreadContext *tc) 5891999SN/A{ 5905958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 5911999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 5921999SN/A // doesn't map to any simulator fd: not a valid target fd 5931999SN/A return -EBADF; 5941999SN/A } 5951999SN/A 5965958Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, 1); 5971999SN/A mode_t hostMode = 0; 5981999SN/A 5991999SN/A // XXX translate mode flags via OS::someting??? 6001999SN/A hostMode = mode; 6011999SN/A 6021999SN/A // do the fchmod 6031999SN/A int result = fchmod(process->sim_fd(fd), hostMode); 6041999SN/A if (result < 0) 6052218SN/A return -errno; 6061999SN/A 6071999SN/A return 0; 6081999SN/A} 6091999SN/A 6105877Shsul@eecs.umich.edu/// Target mremap() handler. 6115877Shsul@eecs.umich.edutemplate <class OS> 6125877Shsul@eecs.umich.eduSyscallReturn 6135877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 6145877Shsul@eecs.umich.edu{ 6155958Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, 0); 6165958Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, 1); 6175958Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, 2); 6185958Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, 3); 6195877Shsul@eecs.umich.edu 6205877Shsul@eecs.umich.edu if ((start % TheISA::VMPageSize != 0) || 6215877Shsul@eecs.umich.edu (new_length % TheISA::VMPageSize != 0)) { 6225877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 6235877Shsul@eecs.umich.edu return -EINVAL; 6245877Shsul@eecs.umich.edu } 6255877Shsul@eecs.umich.edu 6265877Shsul@eecs.umich.edu if (new_length > old_length) { 6275877Shsul@eecs.umich.edu if ((start + old_length) == process->mmap_end) { 6285877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 6295877Shsul@eecs.umich.edu process->pTable->allocate(process->mmap_end, diff); 6305877Shsul@eecs.umich.edu process->mmap_end += diff; 6315877Shsul@eecs.umich.edu return start; 6325877Shsul@eecs.umich.edu } else { 6335877Shsul@eecs.umich.edu // sys/mman.h defined MREMAP_MAYMOVE 6345877Shsul@eecs.umich.edu if (!(flags & 1)) { 6355877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 6365877Shsul@eecs.umich.edu return -ENOMEM; 6375877Shsul@eecs.umich.edu } else { 6385877Shsul@eecs.umich.edu process->pTable->remap(start, old_length, process->mmap_end); 6395877Shsul@eecs.umich.edu warn("mremapping to totally new vaddr %08p-%08p, adding %d\n", 6405877Shsul@eecs.umich.edu process->mmap_end, process->mmap_end + new_length, new_length); 6415877Shsul@eecs.umich.edu start = process->mmap_end; 6425877Shsul@eecs.umich.edu // add on the remaining unallocated pages 6435877Shsul@eecs.umich.edu process->pTable->allocate(start + old_length, new_length - old_length); 6445877Shsul@eecs.umich.edu process->mmap_end += new_length; 6455877Shsul@eecs.umich.edu warn("returning %08p as start\n", start); 6465877Shsul@eecs.umich.edu return start; 6475877Shsul@eecs.umich.edu } 6485877Shsul@eecs.umich.edu } 6495877Shsul@eecs.umich.edu } else { 6505877Shsul@eecs.umich.edu process->pTable->deallocate(start + new_length, old_length - 6515877Shsul@eecs.umich.edu new_length); 6525877Shsul@eecs.umich.edu return start; 6535877Shsul@eecs.umich.edu } 6545877Shsul@eecs.umich.edu} 6551999SN/A 656378SN/A/// Target stat() handler. 657360SN/Atemplate <class OS> 6581450SN/ASyscallReturn 6593114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6602680Sktlim@umich.edu ThreadContext *tc) 661360SN/A{ 662360SN/A std::string path; 663360SN/A 6645958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 6652400SN/A return -EFAULT; 666360SN/A 6673669Sbinkertn@umich.edu // Adjust path for current working directory 6683669Sbinkertn@umich.edu path = process->fullPath(path); 6693669Sbinkertn@umich.edu 670360SN/A struct stat hostBuf; 671360SN/A int result = stat(path.c_str(), &hostBuf); 672360SN/A 673360SN/A if (result < 0) 6742218SN/A return -errno; 675360SN/A 6765958Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 6775958Sgblack@eecs.umich.edu &hostBuf); 678360SN/A 6791458SN/A return 0; 680360SN/A} 681360SN/A 682360SN/A 6835074Ssaidi@eecs.umich.edu/// Target stat64() handler. 6845074Ssaidi@eecs.umich.edutemplate <class OS> 6855074Ssaidi@eecs.umich.eduSyscallReturn 6865074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 6875074Ssaidi@eecs.umich.edu ThreadContext *tc) 6885074Ssaidi@eecs.umich.edu{ 6895074Ssaidi@eecs.umich.edu std::string path; 6905074Ssaidi@eecs.umich.edu 6915958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 6925074Ssaidi@eecs.umich.edu return -EFAULT; 6935074Ssaidi@eecs.umich.edu 6945074Ssaidi@eecs.umich.edu // Adjust path for current working directory 6955074Ssaidi@eecs.umich.edu path = process->fullPath(path); 6965074Ssaidi@eecs.umich.edu 6975208Ssaidi@eecs.umich.edu#if NO_STAT64 6985208Ssaidi@eecs.umich.edu struct stat hostBuf; 6995208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 7005208Ssaidi@eecs.umich.edu#else 7015074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 7025074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 7035208Ssaidi@eecs.umich.edu#endif 7045074Ssaidi@eecs.umich.edu 7055074Ssaidi@eecs.umich.edu if (result < 0) 7065074Ssaidi@eecs.umich.edu return -errno; 7075074Ssaidi@eecs.umich.edu 7085958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7095958Sgblack@eecs.umich.edu &hostBuf); 7105074Ssaidi@eecs.umich.edu 7115074Ssaidi@eecs.umich.edu return 0; 7125074Ssaidi@eecs.umich.edu} 7135074Ssaidi@eecs.umich.edu 7145074Ssaidi@eecs.umich.edu 7151999SN/A/// Target fstat64() handler. 7161999SN/Atemplate <class OS> 7171999SN/ASyscallReturn 7183114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 7192680Sktlim@umich.edu ThreadContext *tc) 7201999SN/A{ 7215958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 7221999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 7231999SN/A // doesn't map to any simulator fd: not a valid target fd 7241999SN/A return -EBADF; 7251999SN/A } 7261999SN/A 7272764Sstever@eecs.umich.edu#if NO_STAT64 7282064SN/A struct stat hostBuf; 7292064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 7302064SN/A#else 7312064SN/A struct stat64 hostBuf; 7321999SN/A int result = fstat64(process->sim_fd(fd), &hostBuf); 7332064SN/A#endif 7341999SN/A 7351999SN/A if (result < 0) 7362218SN/A return -errno; 7371999SN/A 7385958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7393114Sgblack@eecs.umich.edu &hostBuf, (fd == 1)); 7401999SN/A 7411999SN/A return 0; 7421999SN/A} 7431999SN/A 7441999SN/A 745378SN/A/// Target lstat() handler. 746360SN/Atemplate <class OS> 7471450SN/ASyscallReturn 7483114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7492680Sktlim@umich.edu ThreadContext *tc) 750360SN/A{ 751360SN/A std::string path; 752360SN/A 7535958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 7542400SN/A return -EFAULT; 755360SN/A 7563669Sbinkertn@umich.edu // Adjust path for current working directory 7573669Sbinkertn@umich.edu path = process->fullPath(path); 7583669Sbinkertn@umich.edu 759360SN/A struct stat hostBuf; 760360SN/A int result = lstat(path.c_str(), &hostBuf); 761360SN/A 762360SN/A if (result < 0) 7631458SN/A return -errno; 764360SN/A 7655958Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7665958Sgblack@eecs.umich.edu &hostBuf); 767360SN/A 7681458SN/A return 0; 769360SN/A} 770360SN/A 7711999SN/A/// Target lstat64() handler. 7721999SN/Atemplate <class OS> 7731999SN/ASyscallReturn 7743114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 7752680Sktlim@umich.edu ThreadContext *tc) 7761999SN/A{ 7771999SN/A std::string path; 7781999SN/A 7795958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 7802400SN/A return -EFAULT; 7811999SN/A 7823669Sbinkertn@umich.edu // Adjust path for current working directory 7833669Sbinkertn@umich.edu path = process->fullPath(path); 7843669Sbinkertn@umich.edu 7852764Sstever@eecs.umich.edu#if NO_STAT64 7862064SN/A struct stat hostBuf; 7872064SN/A int result = lstat(path.c_str(), &hostBuf); 7882064SN/A#else 7891999SN/A struct stat64 hostBuf; 7901999SN/A int result = lstat64(path.c_str(), &hostBuf); 7912064SN/A#endif 7921999SN/A 7931999SN/A if (result < 0) 7941999SN/A return -errno; 7951999SN/A 7965958Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7975958Sgblack@eecs.umich.edu &hostBuf); 7981999SN/A 7991999SN/A return 0; 8001999SN/A} 8011999SN/A 802378SN/A/// Target fstat() handler. 803360SN/Atemplate <class OS> 8041450SN/ASyscallReturn 8053114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8062680Sktlim@umich.edu ThreadContext *tc) 807360SN/A{ 8085958Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, 0)); 809360SN/A 8101969SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 811360SN/A 812360SN/A if (fd < 0) 8131458SN/A return -EBADF; 814360SN/A 815360SN/A struct stat hostBuf; 816360SN/A int result = fstat(fd, &hostBuf); 817360SN/A 818360SN/A if (result < 0) 8191458SN/A return -errno; 820360SN/A 8215958Sgblack@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 8223114Sgblack@eecs.umich.edu &hostBuf, (fd == 1)); 8232021SN/A 8241458SN/A return 0; 825360SN/A} 826360SN/A 827360SN/A 8281706SN/A/// Target statfs() handler. 8291706SN/Atemplate <class OS> 8301706SN/ASyscallReturn 8313114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8322680Sktlim@umich.edu ThreadContext *tc) 8331706SN/A{ 8341706SN/A std::string path; 8351706SN/A 8365958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 8372400SN/A return -EFAULT; 8381706SN/A 8393669Sbinkertn@umich.edu // Adjust path for current working directory 8403669Sbinkertn@umich.edu path = process->fullPath(path); 8413669Sbinkertn@umich.edu 8421706SN/A struct statfs hostBuf; 8431706SN/A int result = statfs(path.c_str(), &hostBuf); 8441706SN/A 8451706SN/A if (result < 0) 8462218SN/A return -errno; 8471706SN/A 8483114Sgblack@eecs.umich.edu OS::copyOutStatfsBuf(tc->getMemPort(), 8495958Sgblack@eecs.umich.edu (Addr)(process->getSyscallArg(tc, 1)), &hostBuf); 8501706SN/A 8511706SN/A return 0; 8521706SN/A} 8531706SN/A 8541706SN/A 8551706SN/A/// Target fstatfs() handler. 8561706SN/Atemplate <class OS> 8571706SN/ASyscallReturn 8583114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8592680Sktlim@umich.edu ThreadContext *tc) 8601706SN/A{ 8615958Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, 0)); 8621706SN/A 8631706SN/A if (fd < 0) 8641706SN/A return -EBADF; 8651706SN/A 8661706SN/A struct statfs hostBuf; 8671706SN/A int result = fstatfs(fd, &hostBuf); 8681706SN/A 8691706SN/A if (result < 0) 8702218SN/A return -errno; 8711706SN/A 8725958Sgblack@eecs.umich.edu OS::copyOutStatfsBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), 8733114Sgblack@eecs.umich.edu &hostBuf); 8741706SN/A 8751706SN/A return 0; 8761706SN/A} 8771706SN/A 8781706SN/A 8791999SN/A/// Target writev() handler. 8801999SN/Atemplate <class OS> 8811999SN/ASyscallReturn 8823114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8832680Sktlim@umich.edu ThreadContext *tc) 8841999SN/A{ 8855958Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 8861999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 8871999SN/A // doesn't map to any simulator fd: not a valid target fd 8881999SN/A return -EBADF; 8891999SN/A } 8901999SN/A 8912680Sktlim@umich.edu TranslatingPort *p = tc->getMemPort(); 8925958Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, 1); 8935958Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, 2); 8941999SN/A struct iovec hiov[count]; 8951999SN/A for (int i = 0; i < count; ++i) 8961999SN/A { 8971999SN/A typename OS::tgt_iovec tiov; 8982461SN/A 8992461SN/A p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 9002461SN/A (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 9012091SN/A hiov[i].iov_len = gtoh(tiov.iov_len); 9021999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 9032461SN/A p->readBlob(gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 9042461SN/A hiov[i].iov_len); 9051999SN/A } 9061999SN/A 9071999SN/A int result = writev(process->sim_fd(fd), hiov, count); 9081999SN/A 9091999SN/A for (int i = 0; i < count; ++i) 9101999SN/A { 9111999SN/A delete [] (char *)hiov[i].iov_base; 9121999SN/A } 9131999SN/A 9141999SN/A if (result < 0) 9152218SN/A return -errno; 9161999SN/A 9171999SN/A return 0; 9181999SN/A} 9191999SN/A 9201999SN/A 921378SN/A/// Target mmap() handler. 922378SN/A/// 923378SN/A/// We don't really handle mmap(). If the target is mmaping an 924378SN/A/// anonymous region or /dev/zero, we can get away with doing basically 925378SN/A/// nothing (since memory is initialized to zero and the simulator 926378SN/A/// doesn't really check addresses anyway). Always print a warning, 927378SN/A/// since this could be seriously broken if we're not mapping 928378SN/A/// /dev/zero. 929360SN/A// 930378SN/A/// Someday we should explicitly check for /dev/zero in open, flag the 931378SN/A/// file descriptor, and fail (or implement!) a non-anonymous mmap to 932378SN/A/// anything else. 933360SN/Atemplate <class OS> 9341450SN/ASyscallReturn 9353114Sgblack@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 936360SN/A{ 9375958Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, 0); 9385958Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, 1); 9395958Sgblack@eecs.umich.edu // int prot = p->getSyscallArg(tc, 2); 9405958Sgblack@eecs.umich.edu int flags = p->getSyscallArg(tc, 3); 9415958Sgblack@eecs.umich.edu // int fd = p->sim_fd(p->getSyscallArg(tc, 4)); 9425958Sgblack@eecs.umich.edu // int offset = p->getSyscallArg(tc, 5); 943360SN/A 9445877Shsul@eecs.umich.edu 9452544SN/A if ((start % TheISA::VMPageSize) != 0 || 9462544SN/A (length % TheISA::VMPageSize) != 0) { 9472544SN/A warn("mmap failing: arguments not page-aligned: " 9482544SN/A "start 0x%x length 0x%x", 9492544SN/A start, length); 9502544SN/A return -EINVAL; 951360SN/A } 952360SN/A 9532544SN/A if (start != 0) { 9542544SN/A warn("mmap: ignoring suggested map address 0x%x, using 0x%x", 9552544SN/A start, p->mmap_end); 9562544SN/A } 9572544SN/A 9582544SN/A // pick next address from our "mmap region" 9592544SN/A start = p->mmap_end; 9602544SN/A p->pTable->allocate(start, length); 9612544SN/A p->mmap_end += length; 9622544SN/A 9632553SN/A if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 9641969SN/A warn("allowing mmap of file @ fd %d. " 9655958Sgblack@eecs.umich.edu "This will break if not /dev/zero.", p->getSyscallArg(tc, 4)); 966360SN/A } 967360SN/A 9681458SN/A return start; 969360SN/A} 970360SN/A 971378SN/A/// Target getrlimit() handler. 972360SN/Atemplate <class OS> 9731450SN/ASyscallReturn 9743114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9752680Sktlim@umich.edu ThreadContext *tc) 976360SN/A{ 9775958Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, 0); 9785958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, 1)); 979360SN/A 980360SN/A switch (resource) { 9812064SN/A case OS::TGT_RLIMIT_STACK: 9825877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 9832064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 9842091SN/A rlp->rlim_cur = htog(rlp->rlim_cur); 9852091SN/A rlp->rlim_max = htog(rlp->rlim_max); 9862064SN/A break; 987360SN/A 9885877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 9895877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 9905877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 9915877Shsul@eecs.umich.edu rlp->rlim_cur = htog(rlp->rlim_cur); 9925877Shsul@eecs.umich.edu rlp->rlim_max = htog(rlp->rlim_max); 9935877Shsul@eecs.umich.edu break; 9945877Shsul@eecs.umich.edu 9952064SN/A default: 9962064SN/A std::cerr << "getrlimitFunc: unimplemented resource " << resource 9972064SN/A << std::endl; 9982064SN/A abort(); 9992064SN/A break; 1000360SN/A } 1001360SN/A 10022680Sktlim@umich.edu rlp.copyOut(tc->getMemPort()); 10031458SN/A return 0; 1004360SN/A} 1005360SN/A 1006378SN/A/// Target gettimeofday() handler. 1007360SN/Atemplate <class OS> 10081450SN/ASyscallReturn 10093114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10102680Sktlim@umich.edu ThreadContext *tc) 1011360SN/A{ 10125958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, 0)); 1013360SN/A 1014360SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1015360SN/A tp->tv_sec += seconds_since_epoch; 10162091SN/A tp->tv_sec = htog(tp->tv_sec); 10172091SN/A tp->tv_usec = htog(tp->tv_usec); 1018360SN/A 10192680Sktlim@umich.edu tp.copyOut(tc->getMemPort()); 1020360SN/A 10211458SN/A return 0; 1022360SN/A} 1023360SN/A 1024360SN/A 10251999SN/A/// Target utimes() handler. 10261999SN/Atemplate <class OS> 10271999SN/ASyscallReturn 10283114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10292680Sktlim@umich.edu ThreadContext *tc) 10301999SN/A{ 10311999SN/A std::string path; 10321999SN/A 10335958Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 10342400SN/A return -EFAULT; 10351999SN/A 10365958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> tp(process->getSyscallArg(tc, 1)); 10372680Sktlim@umich.edu tp.copyIn(tc->getMemPort()); 10381999SN/A 10391999SN/A struct timeval hostTimeval[2]; 10401999SN/A for (int i = 0; i < 2; ++i) 10411999SN/A { 10422091SN/A hostTimeval[i].tv_sec = gtoh((*tp)[i].tv_sec); 10432091SN/A hostTimeval[i].tv_usec = gtoh((*tp)[i].tv_usec); 10441999SN/A } 10453669Sbinkertn@umich.edu 10463669Sbinkertn@umich.edu // Adjust path for current working directory 10473669Sbinkertn@umich.edu path = process->fullPath(path); 10483669Sbinkertn@umich.edu 10491999SN/A int result = utimes(path.c_str(), hostTimeval); 10501999SN/A 10511999SN/A if (result < 0) 10521999SN/A return -errno; 10531999SN/A 10541999SN/A return 0; 10551999SN/A} 1056378SN/A/// Target getrusage() function. 1057360SN/Atemplate <class OS> 10581450SN/ASyscallReturn 10593114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10602680Sktlim@umich.edu ThreadContext *tc) 1061360SN/A{ 10625958Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, 0); // THREAD, SELF, or CHILDREN 10635958Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, 1)); 1064360SN/A 10653670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 10663670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1067360SN/A rup->ru_stime.tv_sec = 0; 1068360SN/A rup->ru_stime.tv_usec = 0; 1069360SN/A rup->ru_maxrss = 0; 1070360SN/A rup->ru_ixrss = 0; 1071360SN/A rup->ru_idrss = 0; 1072360SN/A rup->ru_isrss = 0; 1073360SN/A rup->ru_minflt = 0; 1074360SN/A rup->ru_majflt = 0; 1075360SN/A rup->ru_nswap = 0; 1076360SN/A rup->ru_inblock = 0; 1077360SN/A rup->ru_oublock = 0; 1078360SN/A rup->ru_msgsnd = 0; 1079360SN/A rup->ru_msgrcv = 0; 1080360SN/A rup->ru_nsignals = 0; 1081360SN/A rup->ru_nvcsw = 0; 1082360SN/A rup->ru_nivcsw = 0; 1083360SN/A 10843670Sbinkertn@umich.edu switch (who) { 10853670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 10863670Sbinkertn@umich.edu getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 10873670Sbinkertn@umich.edu rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec); 10883670Sbinkertn@umich.edu rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec); 10893670Sbinkertn@umich.edu break; 10903670Sbinkertn@umich.edu 10913670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 10923670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 10933670Sbinkertn@umich.edu break; 10943670Sbinkertn@umich.edu 10953670Sbinkertn@umich.edu default: 10963670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 10973670Sbinkertn@umich.edu // plow ahead 10983670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 10993670Sbinkertn@umich.edu who); 11003670Sbinkertn@umich.edu } 11013670Sbinkertn@umich.edu 11022680Sktlim@umich.edu rup.copyOut(tc->getMemPort()); 1103360SN/A 11041458SN/A return 0; 1105360SN/A} 1106360SN/A 11072553SN/A 11082553SN/A 11092553SN/A 11101354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1111