syscall_emul.hh revision 5958
1360SN/A/* 210027SChris.Adeniyi-Jones@arm.com * Copyright (c) 2003-2005 The Regents of The University of Michigan 310027SChris.Adeniyi-Jones@arm.com * All rights reserved. 410027SChris.Adeniyi-Jones@arm.com * 510027SChris.Adeniyi-Jones@arm.com * Redistribution and use in source and binary forms, with or without 610027SChris.Adeniyi-Jones@arm.com * modification, are permitted provided that the following conditions are 710027SChris.Adeniyi-Jones@arm.com * met: redistributions of source code must retain the above copyright 810027SChris.Adeniyi-Jones@arm.com * notice, this list of conditions and the following disclaimer; 910027SChris.Adeniyi-Jones@arm.com * redistributions in binary form must reproduce the above copyright 1010027SChris.Adeniyi-Jones@arm.com * notice, this list of conditions and the following disclaimer in the 1110027SChris.Adeniyi-Jones@arm.com * documentation and/or other materials provided with the distribution; 1210027SChris.Adeniyi-Jones@arm.com * neither the name of the copyright holders nor the names of its 1310027SChris.Adeniyi-Jones@arm.com * contributors may be used to endorse or promote products derived from 141458SN/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. 27360SN/A * 28360SN/A * Authors: Steve Reinhardt 29360SN/A * Kevin Lim 30360SN/A */ 31360SN/A 32360SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 33360SN/A#define __SIM_SYSCALL_EMUL_HH__ 34360SN/A 35360SN/A#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 36360SN/A defined(__FreeBSD__) || defined(__CYGWIN__)) 37360SN/A 38360SN/A/// 392665Ssaidi@eecs.umich.edu/// @file syscall_emul.hh 402665Ssaidi@eecs.umich.edu/// 412665Ssaidi@eecs.umich.edu/// 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> 451354SN/A#include <string> 46360SN/A#ifdef __CYGWIN32__ 472764Sstever@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 489202Spalle@lyckegaard.dk#endif 499202Spalle@lyckegaard.dk#include <sys/stat.h> 502064SN/A#include <fcntl.h> 51360SN/A#include <sys/uio.h> 52360SN/A 53360SN/A#include "sim/host.hh" // for Addr 54360SN/A#include "base/chunk_generator.hh" 55360SN/A#include "base/intmath.hh" // for RoundUp 56360SN/A#include "base/misc.hh" 571809SN/A#include "base/trace.hh" 585543Ssaidi@eecs.umich.edu#include "cpu/base.hh" 591809SN/A#include "cpu/thread_context.hh" 603113Sgblack@eecs.umich.edu#include "mem/translating_port.hh" 618229Snate@binkert.org#include "mem/page_table.hh" 628229Snate@binkert.org#include "sim/process.hh" 633113Sgblack@eecs.umich.edu 647075Snate@binkert.org/// 658229Snate@binkert.org/// System call descriptor. 667075Snate@binkert.org/// 67360SN/Aclass SyscallDesc { 682474SN/A 695543Ssaidi@eecs.umich.edu public: 702462SN/A 711354SN/A /// Typedef for target syscall handler functions. 726216Snate@binkert.org typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 736658Snate@binkert.org LiveProcess *, ThreadContext *); 742474SN/A 752680Sktlim@umich.edu const char *name; //!< Syscall name (e.g., "open"). 768232Snate@binkert.org FuncPtr funcPtr; //!< Pointer to emulation function. 778229Snate@binkert.org int flags; //!< Flags (see Flags enum). 788706Sandreas.hansson@arm.com 797678Sgblack@eecs.umich.edu /// Flag values for controlling syscall behavior. 808229Snate@binkert.org enum Flags { 818766Sgblack@eecs.umich.edu /// Don't set return regs according to funcPtr return value. 826640Svince@csl.cornell.edu /// Used for syscalls with non-standard return conventions 83360SN/A /// 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) 91378SN/A { 921450SN/A } 933114Sgblack@eecs.umich.edu 94360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 955543Ssaidi@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 965543Ssaidi@eecs.umich.edu}; 975543Ssaidi@eecs.umich.edu 98360SN/A 99360SN/Aclass BaseBufferArg { 100360SN/A 101360SN/A public: 102360SN/A 1032680Sktlim@umich.edu 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 // 1153114Sgblack@eecs.umich.edu // copy data into simulator space (read from target memory) 116360SN/A // 117360SN/A virtual bool copyIn(TranslatingPort *memport) 118360SN/A { 119360SN/A memport->readBlob(addr, bufPtr, size); 120360SN/A 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 // 126360SN/A virtual bool copyOut(TranslatingPort *memport) 127360SN/A { 128360SN/A memport->writeBlob(addr, bufPtr, size); 129360SN/A 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}; 1378852Sandreas.hansson@arm.com 138360SN/A 1398852Sandreas.hansson@arm.comclass BufferArg : public BaseBufferArg 1405543Ssaidi@eecs.umich.edu{ 141360SN/A public: 142360SN/A BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { } 143360SN/A void *bufferPtr() { return bufPtr; } 144360SN/A}; 145360SN/A 1468852Sandreas.hansson@arm.comtemplate <class T> 147360SN/Aclass TypedBufferArg : public BaseBufferArg 1488852Sandreas.hansson@arm.com{ 1495543Ssaidi@eecs.umich.edu 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 161360SN/A T &operator*() { return *((T *)bufPtr); } 162360SN/A T* operator->() { return (T *)bufPtr; } 1635543Ssaidi@eecs.umich.edu 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 175360SN/A/// Handler for unimplemented syscalls that we haven't thought about. 176360SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 177360SN/A LiveProcess *p, ThreadContext *tc); 178360SN/A 179360SN/A/// Handler for unimplemented syscalls that we never intend to 180360SN/A/// implement (signal handling, etc.) and should not affect the correct 1815543Ssaidi@eecs.umich.edu/// behavior of the program. Print a warning only if the appropriate 1825543Ssaidi@eecs.umich.edu/// trace flag is enabled. Return success to the target program. 183502SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 184360SN/A LiveProcess *p, ThreadContext *tc); 185360SN/A 186360SN/A/// Target exit() handler: terminate simulation. 187360SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 188360SN/A LiveProcess *p, ThreadContext *tc); 189360SN/A 190360SN/A/// Target getpagesize() handler. 191360SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 192360SN/A LiveProcess *p, ThreadContext *tc); 193360SN/A 194360SN/A/// Target brk() handler: set brk address. 195378SN/ASyscallReturn brkFunc(SyscallDesc *desc, int num, 1961706SN/A LiveProcess *p, ThreadContext *tc); 1973114Sgblack@eecs.umich.edu 198378SN/A/// Target close() handler. 199378SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 200378SN/A 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); 2058149SChris.Emmons@ARM.com 2068149SChris.Emmons@ARM.com/// Target write() handler. 207360SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 2086109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2091706SN/A 2103114Sgblack@eecs.umich.edu/// Target lseek() handler. 211378SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 2126109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2136109Ssanchezd@stanford.edu 2146109Ssanchezd@stanford.edu/// Target _llseek() handler. 2156109Ssanchezd@stanford.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 216378SN/A LiveProcess *p, ThreadContext *tc); 2171706SN/A 2183114Sgblack@eecs.umich.edu/// Target munmap() handler. 219378SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2205748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 2215748SSteve.Reinhardt@amd.com 2225748SSteve.Reinhardt@amd.com/// Target gethostname() handler. 223378SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 224378SN/A LiveProcess *p, ThreadContext *tc); 2251706SN/A 2263114Sgblack@eecs.umich.edu/// Target getcwd() handler. 227378SN/ASyscallReturn getcwdFunc(SyscallDesc *desc, int num, 228378SN/A LiveProcess *p, ThreadContext *tc); 2291706SN/A 2303114Sgblack@eecs.umich.edu/// Target unlink() handler. 231378SN/ASyscallReturn readlinkFunc(SyscallDesc *desc, int num, 232378SN/A LiveProcess *p, ThreadContext *tc); 2331706SN/A 2343114Sgblack@eecs.umich.edu/// Target unlink() handler. 235378SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 236378SN/A LiveProcess *p, ThreadContext *tc); 2371706SN/A 2383114Sgblack@eecs.umich.edu/// Target mkdir() handler. 239378SN/ASyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2404118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2414118Sgblack@eecs.umich.edu 2424118Sgblack@eecs.umich.edu/// Target rename() handler. 2434118Sgblack@eecs.umich.eduSyscallReturn renameFunc(SyscallDesc *desc, int num, 244378SN/A LiveProcess *p, ThreadContext *tc); 2451706SN/A 2463114Sgblack@eecs.umich.edu 247378SN/A/// Target truncate() handler. 248378SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2491706SN/A LiveProcess *p, ThreadContext *tc); 2503114Sgblack@eecs.umich.edu 251360SN/A 2525513SMichael.Adler@intel.com/// Target ftruncate() handler. 2535513SMichael.Adler@intel.comSyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2545513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2555513SMichael.Adler@intel.com 25610203SAli.Saidi@ARM.com 25710203SAli.Saidi@ARM.com/// Target umask() handler. 25810203SAli.Saidi@ARM.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 25910203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc); 2605513SMichael.Adler@intel.com 2615513SMichael.Adler@intel.com 2625513SMichael.Adler@intel.com/// Target chown() handler. 263511SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2641706SN/A LiveProcess *p, ThreadContext *tc); 2653114Sgblack@eecs.umich.edu 266511SN/A 2675513SMichael.Adler@intel.com/// Target fchown() handler. 2685513SMichael.Adler@intel.comSyscallReturn fchownFunc(SyscallDesc *desc, int num, 2695513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2705513SMichael.Adler@intel.com 271511SN/A/// Target dup() handler. 2721706SN/ASyscallReturn dupFunc(SyscallDesc *desc, int num, 2733114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2741706SN/A 2751706SN/A/// Target fnctl() handler. 2761706SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2771706SN/A LiveProcess *process, ThreadContext *tc); 2783114Sgblack@eecs.umich.edu 2791706SN/A/// Target fcntl64() handler. 2801706SN/ASyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2811706SN/A LiveProcess *process, ThreadContext *tc); 2821706SN/A 2833114Sgblack@eecs.umich.edu/// Target setuid() handler. 2841706SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 285511SN/A LiveProcess *p, ThreadContext *tc); 2866703Svince@csl.cornell.edu 2876703Svince@csl.cornell.edu/// Target getpid() handler. 2886703Svince@csl.cornell.eduSyscallReturn getpidFunc(SyscallDesc *desc, int num, 2896703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2906685Stjones1@inf.ed.ac.uk 2916685Stjones1@inf.ed.ac.uk/// Target getuid() handler. 2926685Stjones1@inf.ed.ac.ukSyscallReturn getuidFunc(SyscallDesc *desc, int num, 2936685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2946685Stjones1@inf.ed.ac.uk 2955513SMichael.Adler@intel.com/// Target getgid() handler. 2965513SMichael.Adler@intel.comSyscallReturn getgidFunc(SyscallDesc *desc, int num, 2975513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2985513SMichael.Adler@intel.com 2995513SMichael.Adler@intel.com/// Target getppid() handler. 3001999SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 3011999SN/A LiveProcess *p, ThreadContext *tc); 3023114Sgblack@eecs.umich.edu 3031999SN/A/// Target geteuid() handler. 3041999SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3051999SN/A LiveProcess *p, ThreadContext *tc); 3061999SN/A 3073114Sgblack@eecs.umich.edu/// Target getegid() handler. 3081999SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3093079Sstever@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3103079Sstever@eecs.umich.edu 3113114Sgblack@eecs.umich.edu 3123079Sstever@eecs.umich.edu 3132093SN/A/// Pseudo Funcs - These functions use a different return convension, 3142093SN/A/// returning a second value in a register other than the normal return register 3153114Sgblack@eecs.umich.eduSyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3162093SN/A LiveProcess *process, ThreadContext *tc); 3172687Sksewell@umich.edu 3182687Sksewell@umich.edu/// Target getpidPseudo() handler. 3193114Sgblack@eecs.umich.eduSyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3202687Sksewell@umich.edu LiveProcess *p, ThreadContext *tc); 3212238SN/A 3222238SN/A/// Target getuidPseudo() handler. 3233114Sgblack@eecs.umich.eduSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3242238SN/A LiveProcess *p, ThreadContext *tc); 3252238SN/A 3262238SN/A/// Target getgidPseudo() handler. 3273114Sgblack@eecs.umich.eduSyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3282238SN/A LiveProcess *p, ThreadContext *tc); 3292238SN/A 3302238SN/A 3313114Sgblack@eecs.umich.edu/// A readable name for 1,000,000, for converting microseconds to seconds. 3322238SN/Aconst int one_million = 1000000; 3332238SN/A 3342238SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3353114Sgblack@eecs.umich.edu/// by my reckoning. We want to keep this a constant (not use the 3362238SN/A/// real-world time) to keep simulations repeatable. 3372238SN/Aconst unsigned seconds_since_epoch = 1000000000; 3382238SN/A 3393114Sgblack@eecs.umich.edu/// Helper function to convert current elapsed time to seconds and 3402238SN/A/// microseconds. 3412238SN/Atemplate <class T1, class T2> 3422238SN/Avoid 3433114Sgblack@eecs.umich.edugetElapsedTime(T1 &sec, T2 &usec) 3442238SN/A{ 3452238SN/A int elapsed_usecs = curTick / Clock::Int::us; 3462238SN/A sec = elapsed_usecs / one_million; 3473114Sgblack@eecs.umich.edu usec = elapsed_usecs % one_million; 3482238SN/A} 3496109Ssanchezd@stanford.edu 3506109Ssanchezd@stanford.edu////////////////////////////////////////////////////////////////////// 3516109Ssanchezd@stanford.edu// 3522238SN/A// The following emulation functions are generic, but need to be 3539455Smitch.hayenga+gem5@gmail.com// templated to account for differences in types, constants, etc. 3549455Smitch.hayenga+gem5@gmail.com// 3559455Smitch.hayenga+gem5@gmail.com////////////////////////////////////////////////////////////////////// 35610203SAli.Saidi@ARM.com 35710203SAli.Saidi@ARM.com#if NO_STAT64 35810203SAli.Saidi@ARM.com typedef struct stat hst_stat; 3599455Smitch.hayenga+gem5@gmail.com typedef struct stat hst_stat64; 3609112Smarc.orr@gmail.com#else 3619112Smarc.orr@gmail.com typedef struct stat hst_stat; 3629112Smarc.orr@gmail.com typedef struct stat64 hst_stat64; 3639112Smarc.orr@gmail.com#endif 3649112Smarc.orr@gmail.com 3659112Smarc.orr@gmail.com//// Helper function to convert a host stat buffer to a target stat 3669112Smarc.orr@gmail.com//// buffer. Also copies the target buffer out to the simulated 3679112Smarc.orr@gmail.com//// memory space. Used by stat(), fstat(), and lstat(). 3689112Smarc.orr@gmail.com 3699112Smarc.orr@gmail.comtemplate <typename target_stat, typename host_stat> 3709112Smarc.orr@gmail.comstatic void 3719112Smarc.orr@gmail.comconvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 3729112Smarc.orr@gmail.com{ 3739112Smarc.orr@gmail.com using namespace TheISA; 3749112Smarc.orr@gmail.com 3759112Smarc.orr@gmail.com if (fakeTTY) 3769112Smarc.orr@gmail.com tgt->st_dev = 0xA; 3779112Smarc.orr@gmail.com else 3789112Smarc.orr@gmail.com tgt->st_dev = host->st_dev; 3799112Smarc.orr@gmail.com tgt->st_dev = htog(tgt->st_dev); 3809112Smarc.orr@gmail.com tgt->st_ino = host->st_ino; 3819112Smarc.orr@gmail.com tgt->st_ino = htog(tgt->st_ino); 3829112Smarc.orr@gmail.com tgt->st_mode = host->st_mode; 3839112Smarc.orr@gmail.com if (fakeTTY) { 3849238Slluc.alvarez@bsc.es // Claim to be a character device 3859112Smarc.orr@gmail.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 3869112Smarc.orr@gmail.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 3879112Smarc.orr@gmail.com } 3889112Smarc.orr@gmail.com tgt->st_mode = htog(tgt->st_mode); 3899112Smarc.orr@gmail.com tgt->st_nlink = host->st_nlink; 3909112Smarc.orr@gmail.com tgt->st_nlink = htog(tgt->st_nlink); 3919112Smarc.orr@gmail.com tgt->st_uid = host->st_uid; 3929112Smarc.orr@gmail.com tgt->st_uid = htog(tgt->st_uid); 3939112Smarc.orr@gmail.com tgt->st_gid = host->st_gid; 3949112Smarc.orr@gmail.com tgt->st_gid = htog(tgt->st_gid); 3959112Smarc.orr@gmail.com if (fakeTTY) 3969112Smarc.orr@gmail.com tgt->st_rdev = 0x880d; 3979112Smarc.orr@gmail.com else 3989112Smarc.orr@gmail.com tgt->st_rdev = host->st_rdev; 3999112Smarc.orr@gmail.com tgt->st_rdev = htog(tgt->st_rdev); 4009112Smarc.orr@gmail.com tgt->st_size = host->st_size; 4019112Smarc.orr@gmail.com tgt->st_size = htog(tgt->st_size); 4029112Smarc.orr@gmail.com tgt->st_atimeX = host->st_atime; 4039112Smarc.orr@gmail.com tgt->st_atimeX = htog(tgt->st_atimeX); 4049112Smarc.orr@gmail.com tgt->st_mtimeX = host->st_mtime; 4059112Smarc.orr@gmail.com tgt->st_mtimeX = htog(tgt->st_mtimeX); 4069112Smarc.orr@gmail.com tgt->st_ctimeX = host->st_ctime; 4079112Smarc.orr@gmail.com tgt->st_ctimeX = htog(tgt->st_ctimeX); 4089112Smarc.orr@gmail.com // Force the block size to be 8k. This helps to ensure buffered io works 4099112Smarc.orr@gmail.com // consistently across different hosts. 4109112Smarc.orr@gmail.com tgt->st_blksize = 0x2000; 4119112Smarc.orr@gmail.com tgt->st_blksize = htog(tgt->st_blksize); 4129112Smarc.orr@gmail.com tgt->st_blocks = host->st_blocks; 4139112Smarc.orr@gmail.com tgt->st_blocks = htog(tgt->st_blocks); 4149112Smarc.orr@gmail.com} 4159112Smarc.orr@gmail.com 4169112Smarc.orr@gmail.com// Same for stat64 4179112Smarc.orr@gmail.com 4189112Smarc.orr@gmail.comtemplate <typename target_stat, typename host_stat64> 4199112Smarc.orr@gmail.comstatic void 4209112Smarc.orr@gmail.comconvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4219112Smarc.orr@gmail.com{ 4229112Smarc.orr@gmail.com using namespace TheISA; 4239112Smarc.orr@gmail.com 4249112Smarc.orr@gmail.com convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4259112Smarc.orr@gmail.com#if defined(STAT_HAVE_NSEC) 4269112Smarc.orr@gmail.com tgt->st_atime_nsec = host->st_atime_nsec; 4279112Smarc.orr@gmail.com tgt->st_atime_nsec = htog(tgt->st_atime_nsec); 4289112Smarc.orr@gmail.com tgt->st_mtime_nsec = host->st_mtime_nsec; 4299112Smarc.orr@gmail.com tgt->st_mtime_nsec = htog(tgt->st_mtime_nsec); 4309112Smarc.orr@gmail.com tgt->st_ctime_nsec = host->st_ctime_nsec; 4319112Smarc.orr@gmail.com tgt->st_ctime_nsec = htog(tgt->st_ctime_nsec); 4329112Smarc.orr@gmail.com#else 4339112Smarc.orr@gmail.com tgt->st_atime_nsec = 0; 4349112Smarc.orr@gmail.com tgt->st_mtime_nsec = 0; 4359112Smarc.orr@gmail.com tgt->st_ctime_nsec = 0; 4369238Slluc.alvarez@bsc.es#endif 4379112Smarc.orr@gmail.com} 4389112Smarc.orr@gmail.com 4399112Smarc.orr@gmail.com//Here are a couple convenience functions 4409112Smarc.orr@gmail.comtemplate<class OS> 4419112Smarc.orr@gmail.comstatic void 44210484SMichael.Adler@intel.comcopyOutStatBuf(TranslatingPort * mem, Addr addr, 44310484SMichael.Adler@intel.com hst_stat *host, bool fakeTTY = false) 44410484SMichael.Adler@intel.com{ 44510484SMichael.Adler@intel.com typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 44610484SMichael.Adler@intel.com tgt_stat_buf tgt(addr); 44710484SMichael.Adler@intel.com convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 44810484SMichael.Adler@intel.com tgt.copyOut(mem); 44910484SMichael.Adler@intel.com} 4502238SN/A 4512238SN/Atemplate<class OS> 4522238SN/Astatic void 4532238SN/AcopyOutStat64Buf(TranslatingPort * mem, Addr addr, 4543114Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 4552238SN/A{ 4562238SN/A typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 4572238SN/A tgt_stat_buf tgt(addr); 4583114Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 4592238SN/A tgt.copyOut(mem); 4602238SN/A} 4612238SN/A 4623114Sgblack@eecs.umich.edu/// Target ioctl() handler. For the most part, programs call ioctl() 4632238SN/A/// only to find out if their stdout is a tty, to determine whether to 4642238SN/A/// do line or block buffering. 4652238SN/Atemplate <class OS> 4663114Sgblack@eecs.umich.eduSyscallReturn 4672238SN/AioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 4682238SN/A ThreadContext *tc) 4691354SN/A{ 4701354SN/A int fd = process->getSyscallArg(tc, 0); 4711354SN/A unsigned req = process->getSyscallArg(tc, 1); 4721354SN/A 4731354SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 4741354SN/A 4751354SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 4761354SN/A // doesn't map to any simulator fd: not a valid target fd 4771354SN/A return -EBADF; 4781354SN/A } 4791354SN/A 4801354SN/A switch (req) { 4811354SN/A case OS::TIOCISATTY_: 4821354SN/A case OS::TIOCGETP_: 4837823Ssteve.reinhardt@amd.com case OS::TIOCSETP_: 4841354SN/A case OS::TIOCSETN_: 4851354SN/A case OS::TIOCSETC_: 4861354SN/A case OS::TIOCGETC_: 4871354SN/A case OS::TIOCGETS_: 488360SN/A case OS::TIOCGETA_: 489360SN/A return -ENOTTY; 490360SN/A 491360SN/A default: 492360SN/A fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ 0x%llx\n", 493360SN/A fd, req, tc->readPC()); 494360SN/A } 4953113Sgblack@eecs.umich.edu} 4963113Sgblack@eecs.umich.edu 4973113Sgblack@eecs.umich.edu/// Target open() handler. 4983113Sgblack@eecs.umich.edutemplate <class OS> 4993113Sgblack@eecs.umich.eduSyscallReturn 5003113Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5013113Sgblack@eecs.umich.edu ThreadContext *tc) 5023113Sgblack@eecs.umich.edu{ 5033113Sgblack@eecs.umich.edu std::string path; 5043113Sgblack@eecs.umich.edu 5053113Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 5063113Sgblack@eecs.umich.edu return -EFAULT; 5073113Sgblack@eecs.umich.edu 5083113Sgblack@eecs.umich.edu if (path == "/dev/sysdev0") { 5093113Sgblack@eecs.umich.edu // This is a memory-mapped high-resolution timer device on Alpha. 5103113Sgblack@eecs.umich.edu // We don't support it, so just punt. 5114189Sgblack@eecs.umich.edu warn("Ignoring open(%s, ...)\n", path); 5124189Sgblack@eecs.umich.edu return -ENOENT; 5133113Sgblack@eecs.umich.edu } 5143113Sgblack@eecs.umich.edu 5153113Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, 1); 5163113Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, 2); 5178737Skoansin.tan@gmail.com int hostFlags = 0; 5183113Sgblack@eecs.umich.edu 5198737Skoansin.tan@gmail.com // translate open flags 5203277Sgblack@eecs.umich.edu for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 5215515SMichael.Adler@intel.com if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 5225515SMichael.Adler@intel.com tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 5235515SMichael.Adler@intel.com hostFlags |= OS::openFlagTable[i].hostFlag; 5245515SMichael.Adler@intel.com } 5255515SMichael.Adler@intel.com } 5268737Skoansin.tan@gmail.com 5273277Sgblack@eecs.umich.edu // any target flags left? 5288737Skoansin.tan@gmail.com if (tgtFlags != 0) 5293277Sgblack@eecs.umich.edu warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 5308737Skoansin.tan@gmail.com 5313277Sgblack@eecs.umich.edu#ifdef __CYGWIN32__ 5328737Skoansin.tan@gmail.com hostFlags |= O_BINARY; 5333113Sgblack@eecs.umich.edu#endif 5343113Sgblack@eecs.umich.edu 5353113Sgblack@eecs.umich.edu // Adjust path for current working directory 5363113Sgblack@eecs.umich.edu path = process->fullPath(path); 5378737Skoansin.tan@gmail.com 5383113Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 5398737Skoansin.tan@gmail.com 5403114Sgblack@eecs.umich.edu int fd; 5418737Skoansin.tan@gmail.com if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") || 5423114Sgblack@eecs.umich.edu !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) { 5438737Skoansin.tan@gmail.com // It's a proc/sys entery and requires special handling 5443114Sgblack@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 5458737Skoansin.tan@gmail.com return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false); 5464061Sgblack@eecs.umich.edu } else { 5474061Sgblack@eecs.umich.edu // open the file 5484061Sgblack@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 5498737Skoansin.tan@gmail.com return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false); 5503113Sgblack@eecs.umich.edu } 5518737Skoansin.tan@gmail.com 5523113Sgblack@eecs.umich.edu} 5533113Sgblack@eecs.umich.edu 5543113Sgblack@eecs.umich.edu 5553113Sgblack@eecs.umich.edu/// Target chmod() handler. 5563113Sgblack@eecs.umich.edutemplate <class OS> 5573113Sgblack@eecs.umich.eduSyscallReturn 5583113Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5593113Sgblack@eecs.umich.edu ThreadContext *tc) 5604189Sgblack@eecs.umich.edu{ 5614189Sgblack@eecs.umich.edu std::string path; 5623113Sgblack@eecs.umich.edu 5633113Sgblack@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 5643113Sgblack@eecs.umich.edu return -EFAULT; 5658737Skoansin.tan@gmail.com 5663113Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, 1); 5678737Skoansin.tan@gmail.com mode_t hostMode = 0; 5683113Sgblack@eecs.umich.edu 5698737Skoansin.tan@gmail.com // XXX translate mode flags via OS::something??? 5703113Sgblack@eecs.umich.edu hostMode = mode; 5713113Sgblack@eecs.umich.edu 5723113Sgblack@eecs.umich.edu // Adjust path for current working directory 5733113Sgblack@eecs.umich.edu path = process->fullPath(path); 5743113Sgblack@eecs.umich.edu 5753113Sgblack@eecs.umich.edu // do the chmod 5763113Sgblack@eecs.umich.edu int result = chmod(path.c_str(), hostMode); 5773113Sgblack@eecs.umich.edu if (result < 0) 5783113Sgblack@eecs.umich.edu return -errno; 5793113Sgblack@eecs.umich.edu 5808852Sandreas.hansson@arm.com return 0; 5813113Sgblack@eecs.umich.edu} 5823113Sgblack@eecs.umich.edu 5833113Sgblack@eecs.umich.edu 5843113Sgblack@eecs.umich.edu/// Target fchmod() handler. 5853113Sgblack@eecs.umich.edutemplate <class OS> 5863113Sgblack@eecs.umich.eduSyscallReturn 5873113Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5883113Sgblack@eecs.umich.edu ThreadContext *tc) 5893113Sgblack@eecs.umich.edu{ 5903113Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 5918852Sandreas.hansson@arm.com if (fd < 0 || process->sim_fd(fd) < 0) { 5923113Sgblack@eecs.umich.edu // doesn't map to any simulator fd: not a valid target fd 5933113Sgblack@eecs.umich.edu return -EBADF; 5943113Sgblack@eecs.umich.edu } 5953113Sgblack@eecs.umich.edu 5966686Stjones1@inf.ed.ac.uk uint32_t mode = process->getSyscallArg(tc, 1); 5973113Sgblack@eecs.umich.edu mode_t hostMode = 0; 5983113Sgblack@eecs.umich.edu 5993113Sgblack@eecs.umich.edu // XXX translate mode flags via OS::someting??? 600378SN/A hostMode = mode; 601378SN/A 6029141Smarc.orr@gmail.com // do the fchmod 6039141Smarc.orr@gmail.com int result = fchmod(process->sim_fd(fd), hostMode); 604360SN/A if (result < 0) 6051450SN/A return -errno; 6063114Sgblack@eecs.umich.edu 6072680Sktlim@umich.edu return 0; 608360SN/A} 6096701Sgblack@eecs.umich.edu 6106701Sgblack@eecs.umich.edu/// Target mremap() handler. 6116701Sgblack@eecs.umich.edutemplate <class OS> 612360SN/ASyscallReturn 6131969SN/AmremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 614360SN/A{ 615360SN/A Addr start = process->getSyscallArg(tc, 0); 616360SN/A uint64_t old_length = process->getSyscallArg(tc, 1); 6171458SN/A uint64_t new_length = process->getSyscallArg(tc, 2); 618360SN/A uint64_t flags = process->getSyscallArg(tc, 3); 619360SN/A 6209141Smarc.orr@gmail.com if ((start % TheISA::VMPageSize != 0) || 6211458SN/A (new_length % TheISA::VMPageSize != 0)) { 6229141Smarc.orr@gmail.com warn("mremap failing: arguments not page aligned"); 623360SN/A return -EINVAL; 6249141Smarc.orr@gmail.com } 6259141Smarc.orr@gmail.com 6269141Smarc.orr@gmail.com if (new_length > old_length) { 627360SN/A if ((start + old_length) == process->mmap_end) { 628360SN/A uint64_t diff = new_length - old_length; 629360SN/A process->pTable->allocate(process->mmap_end, diff); 63010027SChris.Adeniyi-Jones@arm.com process->mmap_end += diff; 6313114Sgblack@eecs.umich.edu return start; 63210027SChris.Adeniyi-Jones@arm.com } else { 633360SN/A // sys/mman.h defined MREMAP_MAYMOVE 634360SN/A if (!(flags & 1)) { 635360SN/A warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 6368852Sandreas.hansson@arm.com return -ENOMEM; 6376701Sgblack@eecs.umich.edu } else { 6381458SN/A process->pTable->remap(start, old_length, process->mmap_end); 639360SN/A warn("mremapping to totally new vaddr %08p-%08p, adding %d\n", 640360SN/A process->mmap_end, process->mmap_end + new_length, new_length); 641360SN/A start = process->mmap_end; 642360SN/A // add on the remaining unallocated pages 6431706SN/A process->pTable->allocate(start + old_length, new_length - old_length); 6441458SN/A process->mmap_end += new_length; 645360SN/A warn("returning %08p as start\n", start); 646360SN/A return start; 6476701Sgblack@eecs.umich.edu } 6486701Sgblack@eecs.umich.edu } 649360SN/A } else { 650360SN/A process->pTable->deallocate(start + new_length, old_length - 651360SN/A new_length); 652360SN/A return start; 653360SN/A } 654360SN/A} 655360SN/A 656360SN/A/// Target stat() handler. 657360SN/Atemplate <class OS> 658360SN/ASyscallReturn 659360SN/AstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 660360SN/A ThreadContext *tc) 6611706SN/A{ 662360SN/A std::string path; 663360SN/A 664360SN/A if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 665360SN/A return -EFAULT; 666360SN/A 6673669Sbinkertn@umich.edu // Adjust path for current working directory 6683669Sbinkertn@umich.edu path = process->fullPath(path); 6693669Sbinkertn@umich.edu 6701706SN/A struct stat hostBuf; 6711706SN/A int result = stat(path.c_str(), &hostBuf); 6725795Ssaidi@eecs.umich.edu 6739143Ssteve.reinhardt@amd.com if (result < 0) 6749142Ssteve.reinhardt@amd.com return -errno; 6759142Ssteve.reinhardt@amd.com 6769143Ssteve.reinhardt@amd.com copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 6775795Ssaidi@eecs.umich.edu &hostBuf); 6789143Ssteve.reinhardt@amd.com 6795795Ssaidi@eecs.umich.edu return 0; 6805795Ssaidi@eecs.umich.edu} 6815795Ssaidi@eecs.umich.edu 6829143Ssteve.reinhardt@amd.com 6835795Ssaidi@eecs.umich.edu/// Target stat64() handler. 684360SN/Atemplate <class OS> 6859143Ssteve.reinhardt@amd.comSyscallReturn 6869143Ssteve.reinhardt@amd.comstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 6879143Ssteve.reinhardt@amd.com ThreadContext *tc) 6889143Ssteve.reinhardt@amd.com{ 689360SN/A std::string path; 690360SN/A 69110027SChris.Adeniyi-Jones@arm.com if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 69210027SChris.Adeniyi-Jones@arm.com return -EFAULT; 69310027SChris.Adeniyi-Jones@arm.com 69410027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 69510027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 69610027SChris.Adeniyi-Jones@arm.com 69710027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 69810027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 69910027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 70010027SChris.Adeniyi-Jones@arm.com#else 70110027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 70210027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 70310027SChris.Adeniyi-Jones@arm.com#endif 70410027SChris.Adeniyi-Jones@arm.com 70510027SChris.Adeniyi-Jones@arm.com if (result < 0) 70610027SChris.Adeniyi-Jones@arm.com return -errno; 70710027SChris.Adeniyi-Jones@arm.com 70810027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 70910027SChris.Adeniyi-Jones@arm.com &hostBuf); 71010027SChris.Adeniyi-Jones@arm.com 71110027SChris.Adeniyi-Jones@arm.com return 0; 71210027SChris.Adeniyi-Jones@arm.com} 71310203SAli.Saidi@ARM.com 71410203SAli.Saidi@ARM.com 71510203SAli.Saidi@ARM.com/// Target fstat64() handler. 71610203SAli.Saidi@ARM.comtemplate <class OS> 71710203SAli.Saidi@ARM.comSyscallReturn 71810203SAli.Saidi@ARM.comfstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 71910203SAli.Saidi@ARM.com ThreadContext *tc) 72010203SAli.Saidi@ARM.com{ 72110203SAli.Saidi@ARM.com int fd = process->getSyscallArg(tc, 0); 72210203SAli.Saidi@ARM.com if (fd < 0 || process->sim_fd(fd) < 0) { 72310203SAli.Saidi@ARM.com // doesn't map to any simulator fd: not a valid target fd 72410203SAli.Saidi@ARM.com return -EBADF; 72510203SAli.Saidi@ARM.com } 72610203SAli.Saidi@ARM.com 72710203SAli.Saidi@ARM.com#if NO_STAT64 72810203SAli.Saidi@ARM.com struct stat hostBuf; 72910203SAli.Saidi@ARM.com int result = fstat(process->sim_fd(fd), &hostBuf); 73010203SAli.Saidi@ARM.com#else 73110203SAli.Saidi@ARM.com struct stat64 hostBuf; 73210203SAli.Saidi@ARM.com int result = fstat64(process->sim_fd(fd), &hostBuf); 73310203SAli.Saidi@ARM.com#endif 73410203SAli.Saidi@ARM.com 73510203SAli.Saidi@ARM.com if (result < 0) 73610203SAli.Saidi@ARM.com return -errno; 73710203SAli.Saidi@ARM.com 73810203SAli.Saidi@ARM.com copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7396640Svince@csl.cornell.edu &hostBuf, (fd == 1)); 7406640Svince@csl.cornell.edu 7416640Svince@csl.cornell.edu return 0; 7426640Svince@csl.cornell.edu} 7436640Svince@csl.cornell.edu 7446640Svince@csl.cornell.edu 7456640Svince@csl.cornell.edu/// Target lstat() handler. 7466701Sgblack@eecs.umich.edutemplate <class OS> 7476701Sgblack@eecs.umich.eduSyscallReturn 7486701Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7496640Svince@csl.cornell.edu ThreadContext *tc) 7506701Sgblack@eecs.umich.edu{ 7516701Sgblack@eecs.umich.edu std::string path; 7526640Svince@csl.cornell.edu 7538706Sandreas.hansson@arm.com if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 7546640Svince@csl.cornell.edu return -EFAULT; 7556701Sgblack@eecs.umich.edu 7566640Svince@csl.cornell.edu // Adjust path for current working directory 757360SN/A path = process->fullPath(path); 7581999SN/A 7591999SN/A struct stat hostBuf; 7601999SN/A int result = lstat(path.c_str(), &hostBuf); 7613114Sgblack@eecs.umich.edu 7622680Sktlim@umich.edu if (result < 0) 7631999SN/A return -errno; 7641999SN/A 7651999SN/A copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7666701Sgblack@eecs.umich.edu &hostBuf); 7678852Sandreas.hansson@arm.com 7686701Sgblack@eecs.umich.edu return 0; 7691999SN/A} 7706701Sgblack@eecs.umich.edu 7711999SN/A/// Target lstat64() handler. 7726701Sgblack@eecs.umich.edutemplate <class OS> 7731999SN/ASyscallReturn 7741999SN/Alstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 7751999SN/A ThreadContext *tc) 7761999SN/A{ 7771999SN/A std::string path; 7783669Sbinkertn@umich.edu 7793669Sbinkertn@umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 7803669Sbinkertn@umich.edu return -EFAULT; 7811999SN/A 7821999SN/A // Adjust path for current working directory 7831999SN/A path = process->fullPath(path); 7842218SN/A 7851999SN/A#if NO_STAT64 7861999SN/A struct stat hostBuf; 7871999SN/A int result = lstat(path.c_str(), &hostBuf); 7881999SN/A#else 7891999SN/A struct stat64 hostBuf; 7901999SN/A int result = lstat64(path.c_str(), &hostBuf); 7911999SN/A#endif 7921999SN/A 7933114Sgblack@eecs.umich.edu if (result < 0) 7942680Sktlim@umich.edu return -errno; 7951999SN/A 7966701Sgblack@eecs.umich.edu copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 7976701Sgblack@eecs.umich.edu &hostBuf); 7981999SN/A 7991999SN/A return 0; 8001999SN/A} 8011999SN/A 8021999SN/A/// Target fstat() handler. 8036701Sgblack@eecs.umich.edutemplate <class OS> 8041999SN/ASyscallReturn 8051999SN/AfstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8061999SN/A ThreadContext *tc) 8071999SN/A{ 8081999SN/A int fd = process->sim_fd(process->getSyscallArg(tc, 0)); 8091999SN/A 8101999SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 8111999SN/A 8122218SN/A if (fd < 0) 8131999SN/A return -EBADF; 8141999SN/A 8151999SN/A struct stat hostBuf; 8161999SN/A int result = fstat(fd, &hostBuf); 8175877Shsul@eecs.umich.edu 8185877Shsul@eecs.umich.edu if (result < 0) 8195877Shsul@eecs.umich.edu return -errno; 8205877Shsul@eecs.umich.edu 8215877Shsul@eecs.umich.edu copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), 8226701Sgblack@eecs.umich.edu &hostBuf, (fd == 1)); 8236701Sgblack@eecs.umich.edu 8246701Sgblack@eecs.umich.edu return 0; 8256701Sgblack@eecs.umich.edu} 8266701Sgblack@eecs.umich.edu 82710027SChris.Adeniyi-Jones@arm.com 82810027SChris.Adeniyi-Jones@arm.com/// Target statfs() handler. 82910027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 83010027SChris.Adeniyi-Jones@arm.comSyscallReturn 83110027SChris.Adeniyi-Jones@arm.comstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8325877Shsul@eecs.umich.edu ThreadContext *tc) 83310318Sandreas.hansson@arm.com{ 83410318Sandreas.hansson@arm.com std::string path; 83510318Sandreas.hansson@arm.com 8365877Shsul@eecs.umich.edu if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 8375877Shsul@eecs.umich.edu return -EFAULT; 8385877Shsul@eecs.umich.edu 8395877Shsul@eecs.umich.edu // Adjust path for current working directory 8405877Shsul@eecs.umich.edu path = process->fullPath(path); 84110027SChris.Adeniyi-Jones@arm.com 84210027SChris.Adeniyi-Jones@arm.com struct statfs hostBuf; 8435877Shsul@eecs.umich.edu int result = statfs(path.c_str(), &hostBuf); 8448601Ssteve.reinhardt@amd.com 8455877Shsul@eecs.umich.edu if (result < 0) 8465877Shsul@eecs.umich.edu return -errno; 8475877Shsul@eecs.umich.edu 84810027SChris.Adeniyi-Jones@arm.com OS::copyOutStatfsBuf(tc->getMemPort(), 8495877Shsul@eecs.umich.edu (Addr)(process->getSyscallArg(tc, 1)), &hostBuf); 8505877Shsul@eecs.umich.edu 8515877Shsul@eecs.umich.edu return 0; 85210027SChris.Adeniyi-Jones@arm.com} 85310027SChris.Adeniyi-Jones@arm.com 85410027SChris.Adeniyi-Jones@arm.com 85510027SChris.Adeniyi-Jones@arm.com/// Target fstatfs() handler. 85610027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 85710027SChris.Adeniyi-Jones@arm.comSyscallReturn 8585877Shsul@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 85910027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 86010027SChris.Adeniyi-Jones@arm.com{ 86110027SChris.Adeniyi-Jones@arm.com int fd = process->sim_fd(process->getSyscallArg(tc, 0)); 86210027SChris.Adeniyi-Jones@arm.com 86310027SChris.Adeniyi-Jones@arm.com if (fd < 0) 86410027SChris.Adeniyi-Jones@arm.com return -EBADF; 86510027SChris.Adeniyi-Jones@arm.com 86610027SChris.Adeniyi-Jones@arm.com struct statfs hostBuf; 86710027SChris.Adeniyi-Jones@arm.com int result = fstatfs(fd, &hostBuf); 86810027SChris.Adeniyi-Jones@arm.com 86910027SChris.Adeniyi-Jones@arm.com if (result < 0) 87010027SChris.Adeniyi-Jones@arm.com return -errno; 87110027SChris.Adeniyi-Jones@arm.com 8725877Shsul@eecs.umich.edu OS::copyOutStatfsBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), 8735877Shsul@eecs.umich.edu &hostBuf); 8745877Shsul@eecs.umich.edu 87510027SChris.Adeniyi-Jones@arm.com return 0; 87610027SChris.Adeniyi-Jones@arm.com} 8778601Ssteve.reinhardt@amd.com 87810027SChris.Adeniyi-Jones@arm.com 8795877Shsul@eecs.umich.edu/// Target writev() handler. 8805877Shsul@eecs.umich.edutemplate <class OS> 8811999SN/ASyscallReturn 882378SN/AwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 883360SN/A ThreadContext *tc) 8841450SN/A{ 8853114Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, 0); 8862680Sktlim@umich.edu if (fd < 0 || process->sim_fd(fd) < 0) { 887360SN/A // doesn't map to any simulator fd: not a valid target fd 888360SN/A return -EBADF; 889360SN/A } 8906701Sgblack@eecs.umich.edu 8918852Sandreas.hansson@arm.com TranslatingPort *p = tc->getMemPort(); 8926701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, 1); 8936701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, 2); 8946701Sgblack@eecs.umich.edu struct iovec hiov[count]; 8956701Sgblack@eecs.umich.edu for (int i = 0; i < count; ++i) 896360SN/A { 8973669Sbinkertn@umich.edu typename OS::tgt_iovec tiov; 8983669Sbinkertn@umich.edu 8993669Sbinkertn@umich.edu p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 900360SN/A (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 901360SN/A hiov[i].iov_len = gtoh(tiov.iov_len); 902360SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 903360SN/A p->readBlob(gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 9042218SN/A hiov[i].iov_len); 905360SN/A } 9068706Sandreas.hansson@arm.com 907360SN/A int result = writev(process->sim_fd(fd), hiov, count); 9081458SN/A 909360SN/A for (int i = 0; i < count; ++i) 910360SN/A { 911360SN/A delete [] (char *)hiov[i].iov_base; 9125074Ssaidi@eecs.umich.edu } 9135074Ssaidi@eecs.umich.edu 9145074Ssaidi@eecs.umich.edu if (result < 0) 9155074Ssaidi@eecs.umich.edu return -errno; 9165074Ssaidi@eecs.umich.edu 9175074Ssaidi@eecs.umich.edu return 0; 9185074Ssaidi@eecs.umich.edu} 9195074Ssaidi@eecs.umich.edu 9206701Sgblack@eecs.umich.edu 9218852Sandreas.hansson@arm.com/// Target mmap() handler. 9226701Sgblack@eecs.umich.edu/// 9235074Ssaidi@eecs.umich.edu/// We don't really handle mmap(). If the target is mmaping an 9246701Sgblack@eecs.umich.edu/// anonymous region or /dev/zero, we can get away with doing basically 9255074Ssaidi@eecs.umich.edu/// nothing (since memory is initialized to zero and the simulator 9265074Ssaidi@eecs.umich.edu/// doesn't really check addresses anyway). Always print a warning, 9275074Ssaidi@eecs.umich.edu/// since this could be seriously broken if we're not mapping 9285074Ssaidi@eecs.umich.edu/// /dev/zero. 9295208Ssaidi@eecs.umich.edu// 9305208Ssaidi@eecs.umich.edu/// Someday we should explicitly check for /dev/zero in open, flag the 9315208Ssaidi@eecs.umich.edu/// file descriptor, and fail (or implement!) a non-anonymous mmap to 9325208Ssaidi@eecs.umich.edu/// anything else. 9335074Ssaidi@eecs.umich.edutemplate <class OS> 9345074Ssaidi@eecs.umich.eduSyscallReturn 9355208Ssaidi@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 9365074Ssaidi@eecs.umich.edu{ 9375074Ssaidi@eecs.umich.edu Addr start = p->getSyscallArg(tc, 0); 9385074Ssaidi@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, 1); 9395074Ssaidi@eecs.umich.edu // int prot = p->getSyscallArg(tc, 2); 9408706Sandreas.hansson@arm.com int flags = p->getSyscallArg(tc, 3); 9415074Ssaidi@eecs.umich.edu // int fd = p->sim_fd(p->getSyscallArg(tc, 4)); 9425074Ssaidi@eecs.umich.edu // int offset = p->getSyscallArg(tc, 5); 9435074Ssaidi@eecs.umich.edu 9445074Ssaidi@eecs.umich.edu 9455074Ssaidi@eecs.umich.edu if ((start % TheISA::VMPageSize) != 0 || 94610027SChris.Adeniyi-Jones@arm.com (length % TheISA::VMPageSize) != 0) { 94710027SChris.Adeniyi-Jones@arm.com warn("mmap failing: arguments not page-aligned: " 94810027SChris.Adeniyi-Jones@arm.com "start 0x%x length 0x%x", 94910027SChris.Adeniyi-Jones@arm.com start, length); 95010027SChris.Adeniyi-Jones@arm.com return -EINVAL; 95110027SChris.Adeniyi-Jones@arm.com } 95210027SChris.Adeniyi-Jones@arm.com 95310027SChris.Adeniyi-Jones@arm.com if (start != 0) { 95410027SChris.Adeniyi-Jones@arm.com warn("mmap: ignoring suggested map address 0x%x, using 0x%x", 95510027SChris.Adeniyi-Jones@arm.com start, p->mmap_end); 95610027SChris.Adeniyi-Jones@arm.com } 95710027SChris.Adeniyi-Jones@arm.com 95810027SChris.Adeniyi-Jones@arm.com // pick next address from our "mmap region" 95910027SChris.Adeniyi-Jones@arm.com start = p->mmap_end; 96010027SChris.Adeniyi-Jones@arm.com p->pTable->allocate(start, length); 96110027SChris.Adeniyi-Jones@arm.com p->mmap_end += length; 96210027SChris.Adeniyi-Jones@arm.com 96310027SChris.Adeniyi-Jones@arm.com if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 96410027SChris.Adeniyi-Jones@arm.com warn("allowing mmap of file @ fd %d. " 96510027SChris.Adeniyi-Jones@arm.com "This will break if not /dev/zero.", p->getSyscallArg(tc, 4)); 96610027SChris.Adeniyi-Jones@arm.com } 96710027SChris.Adeniyi-Jones@arm.com 96810027SChris.Adeniyi-Jones@arm.com return start; 96910027SChris.Adeniyi-Jones@arm.com} 97010027SChris.Adeniyi-Jones@arm.com 97110027SChris.Adeniyi-Jones@arm.com/// Target getrlimit() handler. 97210027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 97310027SChris.Adeniyi-Jones@arm.comSyscallReturn 97410027SChris.Adeniyi-Jones@arm.comgetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 97510027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 97610027SChris.Adeniyi-Jones@arm.com{ 97710027SChris.Adeniyi-Jones@arm.com unsigned resource = process->getSyscallArg(tc, 0); 97810027SChris.Adeniyi-Jones@arm.com TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, 1)); 97910027SChris.Adeniyi-Jones@arm.com 98010027SChris.Adeniyi-Jones@arm.com switch (resource) { 98110027SChris.Adeniyi-Jones@arm.com case OS::TGT_RLIMIT_STACK: 98210027SChris.Adeniyi-Jones@arm.com // max stack size in bytes: make up a number (8MB for now) 9831999SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 9841999SN/A rlp->rlim_cur = htog(rlp->rlim_cur); 9851999SN/A rlp->rlim_max = htog(rlp->rlim_max); 9863114Sgblack@eecs.umich.edu break; 9872680Sktlim@umich.edu 9881999SN/A case OS::TGT_RLIMIT_DATA: 9896701Sgblack@eecs.umich.edu // max data segment size in bytes: make up a number 9906701Sgblack@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 9916701Sgblack@eecs.umich.edu rlp->rlim_cur = htog(rlp->rlim_cur); 9921999SN/A rlp->rlim_max = htog(rlp->rlim_max); 9931999SN/A break; 9941999SN/A 9951999SN/A default: 9961999SN/A std::cerr << "getrlimitFunc: unimplemented resource " << resource 9972764Sstever@eecs.umich.edu << std::endl; 9982064SN/A abort(); 9992064SN/A break; 10002064SN/A } 10012064SN/A 10021999SN/A rlp.copyOut(tc->getMemPort()); 10032064SN/A return 0; 10041999SN/A} 10051999SN/A 10062218SN/A/// Target gettimeofday() handler. 10071999SN/Atemplate <class OS> 10088706Sandreas.hansson@arm.comSyscallReturn 10091999SN/AgettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10101999SN/A ThreadContext *tc) 10111999SN/A{ 10121999SN/A TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, 0)); 10131999SN/A 1014378SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1015360SN/A tp->tv_sec += seconds_since_epoch; 10161450SN/A tp->tv_sec = htog(tp->tv_sec); 10173114Sgblack@eecs.umich.edu tp->tv_usec = htog(tp->tv_usec); 10182680Sktlim@umich.edu 1019360SN/A tp.copyOut(tc->getMemPort()); 1020360SN/A 1021360SN/A return 0; 10226701Sgblack@eecs.umich.edu} 10238852Sandreas.hansson@arm.com 10246701Sgblack@eecs.umich.edu 10256701Sgblack@eecs.umich.edu/// Target utimes() handler. 10266701Sgblack@eecs.umich.edutemplate <class OS> 10276701Sgblack@eecs.umich.eduSyscallReturn 1028360SN/AutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10293669Sbinkertn@umich.edu ThreadContext *tc) 10303669Sbinkertn@umich.edu{ 10313669Sbinkertn@umich.edu std::string path; 1032360SN/A 1033360SN/A if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) 1034360SN/A return -EFAULT; 1035360SN/A 10361458SN/A TypedBufferArg<typename OS::timeval [2]> tp(process->getSyscallArg(tc, 1)); 1037360SN/A tp.copyIn(tc->getMemPort()); 10388706Sandreas.hansson@arm.com 1039360SN/A struct timeval hostTimeval[2]; 10401458SN/A for (int i = 0; i < 2; ++i) 1041360SN/A { 1042360SN/A hostTimeval[i].tv_sec = gtoh((*tp)[i].tv_sec); 10431999SN/A hostTimeval[i].tv_usec = gtoh((*tp)[i].tv_usec); 10441999SN/A } 10451999SN/A 10463114Sgblack@eecs.umich.edu // Adjust path for current working directory 10472680Sktlim@umich.edu path = process->fullPath(path); 10481999SN/A 10491999SN/A int result = utimes(path.c_str(), hostTimeval); 10501999SN/A 10516701Sgblack@eecs.umich.edu if (result < 0) 10528852Sandreas.hansson@arm.com return -errno; 10536701Sgblack@eecs.umich.edu 10546701Sgblack@eecs.umich.edu return 0; 10556701Sgblack@eecs.umich.edu} 10566701Sgblack@eecs.umich.edu/// Target getrusage() function. 10571999SN/Atemplate <class OS> 10583669Sbinkertn@umich.eduSyscallReturn 10593669Sbinkertn@umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10603669Sbinkertn@umich.edu ThreadContext *tc) 10612764Sstever@eecs.umich.edu{ 10622064SN/A int who = process->getSyscallArg(tc, 0); // THREAD, SELF, or CHILDREN 10632064SN/A TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, 1)); 10642064SN/A 10651999SN/A rup->ru_utime.tv_sec = 0; 10661999SN/A rup->ru_utime.tv_usec = 0; 10672064SN/A rup->ru_stime.tv_sec = 0; 10681999SN/A rup->ru_stime.tv_usec = 0; 10691999SN/A rup->ru_maxrss = 0; 10701999SN/A rup->ru_ixrss = 0; 10711999SN/A rup->ru_idrss = 0; 10728706Sandreas.hansson@arm.com rup->ru_isrss = 0; 10731999SN/A rup->ru_minflt = 0; 10741999SN/A rup->ru_majflt = 0; 10751999SN/A rup->ru_nswap = 0; 10761999SN/A rup->ru_inblock = 0; 1077378SN/A rup->ru_oublock = 0; 1078360SN/A rup->ru_msgsnd = 0; 10791450SN/A rup->ru_msgrcv = 0; 10803114Sgblack@eecs.umich.edu rup->ru_nsignals = 0; 10812680Sktlim@umich.edu rup->ru_nvcsw = 0; 1082360SN/A rup->ru_nivcsw = 0; 10836701Sgblack@eecs.umich.edu 10846701Sgblack@eecs.umich.edu switch (who) { 10856701Sgblack@eecs.umich.edu case OS::TGT_RUSAGE_SELF: 1086360SN/A getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 10871969SN/A rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec); 1088360SN/A rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec); 1089360SN/A break; 10901458SN/A 1091360SN/A case OS::TGT_RUSAGE_CHILDREN: 1092360SN/A // do nothing. We have no child processes, so they take no time. 1093360SN/A break; 1094360SN/A 1095360SN/A default: 10961458SN/A // don't really handle THREAD or CHILDREN, but just warn and 1097360SN/A // plow ahead 10988706Sandreas.hansson@arm.com warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 10992021SN/A who); 11001458SN/A } 1101360SN/A 1102360SN/A rup.copyOut(tc->getMemPort()); 1103360SN/A 11041706SN/A return 0; 11051706SN/A} 11061706SN/A 11073114Sgblack@eecs.umich.edu 11082680Sktlim@umich.edu 11091706SN/A 11101706SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 11111706SN/A