syscall_emul.hh revision 10027
1360SN/A/* 210027SChris.Adeniyi-Jones@arm.com * Copyright (c) 2012-2013 ARM Limited 310027SChris.Adeniyi-Jones@arm.com * All rights reserved 410027SChris.Adeniyi-Jones@arm.com * 510027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 610027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 710027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 810027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 910027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1010027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1110027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1210027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1310027SChris.Adeniyi-Jones@arm.com * 141458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 15360SN/A * All rights reserved. 16360SN/A * 17360SN/A * Redistribution and use in source and binary forms, with or without 18360SN/A * modification, are permitted provided that the following conditions are 19360SN/A * met: redistributions of source code must retain the above copyright 20360SN/A * notice, this list of conditions and the following disclaimer; 21360SN/A * redistributions in binary form must reproduce the above copyright 22360SN/A * notice, this list of conditions and the following disclaimer in the 23360SN/A * documentation and/or other materials provided with the distribution; 24360SN/A * neither the name of the copyright holders nor the names of its 25360SN/A * contributors may be used to endorse or promote products derived from 26360SN/A * this software without specific prior written permission. 27360SN/A * 28360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392665Ssaidi@eecs.umich.edu * 402665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 412665Ssaidi@eecs.umich.edu * Kevin Lim 42360SN/A */ 43360SN/A 441354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 451354SN/A#define __SIM_SYSCALL_EMUL_HH__ 46360SN/A 472764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 489202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 499202Spalle@lyckegaard.dk defined(__NetBSD__)) 502064SN/A 51360SN/A/// 52360SN/A/// @file syscall_emul.hh 53360SN/A/// 54360SN/A/// This file defines objects used to emulate syscalls from the target 55360SN/A/// application on the host machine. 56360SN/A 571809SN/A#ifdef __CYGWIN32__ 585543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 591809SN/A#endif 603113Sgblack@eecs.umich.edu#include <sys/stat.h> 618229Snate@binkert.org#include <sys/time.h> 628229Snate@binkert.org#include <sys/uio.h> 633113Sgblack@eecs.umich.edu#include <fcntl.h> 647075Snate@binkert.org 658229Snate@binkert.org#include <cerrno> 667075Snate@binkert.org#include <string> 67360SN/A 682474SN/A#include "base/chunk_generator.hh" 695543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 702462SN/A#include "base/misc.hh" 711354SN/A#include "base/trace.hh" 726216Snate@binkert.org#include "base/types.hh" 736658Snate@binkert.org#include "config/the_isa.hh" 742474SN/A#include "cpu/base.hh" 752680Sktlim@umich.edu#include "cpu/thread_context.hh" 768232Snate@binkert.org#include "debug/SyscallVerbose.hh" 778229Snate@binkert.org#include "mem/page_table.hh" 788706Sandreas.hansson@arm.com#include "mem/se_translating_port_proxy.hh" 797678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 808229Snate@binkert.org#include "sim/process.hh" 818766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 826640Svince@csl.cornell.edu#include "sim/system.hh" 83360SN/A 84360SN/A/// 85360SN/A/// System call descriptor. 86360SN/A/// 87360SN/Aclass SyscallDesc { 88360SN/A 89360SN/A public: 90360SN/A 91378SN/A /// Typedef for target syscall handler functions. 921450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 933114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 94360SN/A 955543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 965543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 975543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 98360SN/A 99360SN/A /// Flag values for controlling syscall behavior. 100360SN/A enum Flags { 101360SN/A /// Don't set return regs according to funcPtr return value. 102360SN/A /// Used for syscalls with non-standard return conventions 1032680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 104360SN/A /// sigreturn). 105360SN/A SuppressReturnValue = 1 106360SN/A }; 107360SN/A 108360SN/A /// Constructor. 109360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 110360SN/A : name(_name), funcPtr(_funcPtr), flags(_flags) 111360SN/A { 112360SN/A } 113360SN/A 114360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1153114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 116360SN/A}; 117360SN/A 118360SN/A 119360SN/Aclass BaseBufferArg { 120360SN/A 121360SN/A public: 122360SN/A 123360SN/A BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size) 124360SN/A { 125360SN/A bufPtr = new uint8_t[size]; 126360SN/A // clear out buffer: in case we only partially populate this, 127360SN/A // and then do a copyOut(), we want to make sure we don't 128360SN/A // introduce any random junk into the simulated address space 129360SN/A memset(bufPtr, 0, size); 130360SN/A } 131360SN/A 132360SN/A virtual ~BaseBufferArg() { delete [] bufPtr; } 133360SN/A 134360SN/A // 135360SN/A // copy data into simulator space (read from target memory) 136360SN/A // 1378852Sandreas.hansson@arm.com virtual bool copyIn(SETranslatingPortProxy &memproxy) 138360SN/A { 1398852Sandreas.hansson@arm.com memproxy.readBlob(addr, bufPtr, size); 1405543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 141360SN/A } 142360SN/A 143360SN/A // 144360SN/A // copy data out of simulator space (write to target memory) 145360SN/A // 1468852Sandreas.hansson@arm.com virtual bool copyOut(SETranslatingPortProxy &memproxy) 147360SN/A { 1488852Sandreas.hansson@arm.com memproxy.writeBlob(addr, bufPtr, size); 1495543Ssaidi@eecs.umich.edu return true; // no EFAULT detection for now 150360SN/A } 151360SN/A 152360SN/A protected: 153360SN/A Addr addr; 154360SN/A int size; 155360SN/A uint8_t *bufPtr; 156360SN/A}; 157360SN/A 158360SN/A 159360SN/Aclass BufferArg : public BaseBufferArg 160360SN/A{ 161360SN/A public: 162360SN/A BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { } 1635543Ssaidi@eecs.umich.edu void *bufferPtr() { return bufPtr; } 164360SN/A}; 165360SN/A 166360SN/Atemplate <class T> 167360SN/Aclass TypedBufferArg : public BaseBufferArg 168360SN/A{ 169360SN/A public: 170360SN/A // user can optionally specify a specific number of bytes to 171360SN/A // allocate to deal with those structs that have variable-size 172360SN/A // arrays at the end 173360SN/A TypedBufferArg(Addr _addr, int _size = sizeof(T)) 174360SN/A : BaseBufferArg(_addr, _size) 175360SN/A { } 176360SN/A 177360SN/A // type case 178360SN/A operator T*() { return (T *)bufPtr; } 179360SN/A 180360SN/A // dereference operators 1815543Ssaidi@eecs.umich.edu T &operator*() { return *((T *)bufPtr); } 1825543Ssaidi@eecs.umich.edu T* operator->() { return (T *)bufPtr; } 183502SN/A T &operator[](int i) { return ((T *)bufPtr)[i]; } 184360SN/A}; 185360SN/A 186360SN/A////////////////////////////////////////////////////////////////////// 187360SN/A// 188360SN/A// The following emulation functions are generic enough that they 189360SN/A// don't need to be recompiled for different emulated OS's. They are 190360SN/A// defined in sim/syscall_emul.cc. 191360SN/A// 192360SN/A////////////////////////////////////////////////////////////////////// 193360SN/A 194360SN/A 195378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1961706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1973114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 198378SN/A 199378SN/A/// Handler for unimplemented syscalls that we never intend to 200378SN/A/// implement (signal handling, etc.) and should not affect the correct 201378SN/A/// behavior of the program. Print a warning only if the appropriate 202378SN/A/// trace flag is enabled. Return success to the target program. 2031706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 2043114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2058149SChris.Emmons@ARM.comSyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num, 2068149SChris.Emmons@ARM.com LiveProcess *p, ThreadContext *tc); 207360SN/A 2086109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 2091706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 2103114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 211378SN/A 2126109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 2136109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 2146109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2156109Ssanchezd@stanford.edu 216378SN/A/// Target getpagesize() handler. 2171706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 2183114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 219378SN/A 2205748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 2215748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 2225748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 223378SN/A 224378SN/A/// Target close() handler. 2251706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 2263114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 227378SN/A 228378SN/A/// Target read() handler. 2291706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 2303114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 231378SN/A 232378SN/A/// Target write() handler. 2331706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 2343114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 235378SN/A 236378SN/A/// Target lseek() handler. 2371706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 2383114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 239378SN/A 2404118Sgblack@eecs.umich.edu/// Target _llseek() handler. 2414118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 2424118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2434118Sgblack@eecs.umich.edu 244378SN/A/// Target munmap() handler. 2451706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 2463114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 247378SN/A 248378SN/A/// Target gethostname() handler. 2491706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2503114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 251360SN/A 2525513SMichael.Adler@intel.com/// Target getcwd() handler. 2535513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2545513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2555513SMichael.Adler@intel.com 2565513SMichael.Adler@intel.com/// Target unlink() handler. 2575513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2585513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2595513SMichael.Adler@intel.com 260511SN/A/// Target unlink() handler. 2611706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2623114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 263511SN/A 2645513SMichael.Adler@intel.com/// Target mkdir() handler. 2655513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2665513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2675513SMichael.Adler@intel.com 268511SN/A/// Target rename() handler. 2691706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2703114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2711706SN/A 2721706SN/A 2731706SN/A/// Target truncate() handler. 2741706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2753114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2761706SN/A 2771706SN/A 2781706SN/A/// Target ftruncate() handler. 2791706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2803114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2811706SN/A 282511SN/A 2836703Svince@csl.cornell.edu/// Target truncate64() handler. 2846703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2856703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2866703Svince@csl.cornell.edu 2876685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2886685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2896685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2906685Stjones1@inf.ed.ac.uk 2916685Stjones1@inf.ed.ac.uk 2925513SMichael.Adler@intel.com/// Target umask() handler. 2935513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2945513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2955513SMichael.Adler@intel.com 2965513SMichael.Adler@intel.com 2971999SN/A/// Target chown() handler. 2981999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2993114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3001999SN/A 3011999SN/A 3021999SN/A/// Target fchown() handler. 3031999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 3043114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3051999SN/A 3063079Sstever@eecs.umich.edu/// Target dup() handler. 3073079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 3083114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3093079Sstever@eecs.umich.edu 3102093SN/A/// Target fnctl() handler. 3112093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 3123114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3132093SN/A 3142687Sksewell@umich.edu/// Target fcntl64() handler. 3152687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 3163114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3172687Sksewell@umich.edu 3182238SN/A/// Target setuid() handler. 3192238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 3203114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3212238SN/A 3222238SN/A/// Target getpid() handler. 3232238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 3243114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3252238SN/A 3262238SN/A/// Target getuid() handler. 3272238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 3283114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3292238SN/A 3302238SN/A/// Target getgid() handler. 3312238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 3323114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3332238SN/A 3342238SN/A/// Target getppid() handler. 3352238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 3363114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3372238SN/A 3382238SN/A/// Target geteuid() handler. 3392238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 3403114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3412238SN/A 3422238SN/A/// Target getegid() handler. 3432238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3452238SN/A 3466109Ssanchezd@stanford.edu/// Target clone() handler. 3476109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3486109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3492238SN/A 3509455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3519455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3529455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 3539455Smitch.hayenga+gem5@gmail.com 3549112Smarc.orr@gmail.com/// Futex system call 3559112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3569112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3579112Smarc.orr@gmail.comtemplate <class OS> 3589112Smarc.orr@gmail.comSyscallReturn 3599112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3609112Smarc.orr@gmail.com ThreadContext *tc) 3619112Smarc.orr@gmail.com{ 3629112Smarc.orr@gmail.com int index_uaddr = 0; 3639112Smarc.orr@gmail.com int index_op = 1; 3649112Smarc.orr@gmail.com int index_val = 2; 3659112Smarc.orr@gmail.com int index_timeout = 3; 3669112Smarc.orr@gmail.com 3679112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3689112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3699112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3709112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3719112Smarc.orr@gmail.com 3729112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3739112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3749112Smarc.orr@gmail.com 3759112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3769112Smarc.orr@gmail.com uaddr, op, val); 3779112Smarc.orr@gmail.com 3789238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3799112Smarc.orr@gmail.com 3809112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3819112Smarc.orr@gmail.com if (timeout != 0) { 3829112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3839112Smarc.orr@gmail.com "we'll wait indefinitely"); 3849112Smarc.orr@gmail.com } 3859112Smarc.orr@gmail.com 3869112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3879112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3889112Smarc.orr@gmail.com int mem_val = *((int *)buf); 3899112Smarc.orr@gmail.com delete buf; 3909112Smarc.orr@gmail.com 3919112Smarc.orr@gmail.com if(val != mem_val) { 3929112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3939112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3949112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3959112Smarc.orr@gmail.com } 3969112Smarc.orr@gmail.com 3979112Smarc.orr@gmail.com // Queue the thread context 3989112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3999112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 4009112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 4019112Smarc.orr@gmail.com } else { 4029112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 4039112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 4049112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 4059112Smarc.orr@gmail.com } 4069112Smarc.orr@gmail.com tcWaitList->push_back(tc); 4079112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 4089112Smarc.orr@gmail.com "thread context\n"); 4099112Smarc.orr@gmail.com tc->suspend(); 4109112Smarc.orr@gmail.com return 0; 4119112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 4129112Smarc.orr@gmail.com int wokenUp = 0; 4139112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 4149112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 4159112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 4169112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 4179112Smarc.orr@gmail.com tcWaitList->front()->activate(); 4189112Smarc.orr@gmail.com tcWaitList->pop_front(); 4199112Smarc.orr@gmail.com wokenUp++; 4209112Smarc.orr@gmail.com } 4219112Smarc.orr@gmail.com if(tcWaitList->empty()) { 4229112Smarc.orr@gmail.com futex_map.erase(uaddr); 4239112Smarc.orr@gmail.com delete tcWaitList; 4249112Smarc.orr@gmail.com } 4259112Smarc.orr@gmail.com } 4269112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 4279112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 4289112Smarc.orr@gmail.com return wokenUp; 4299112Smarc.orr@gmail.com } else { 4309238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 4319112Smarc.orr@gmail.com return 0; 4329112Smarc.orr@gmail.com } 4339112Smarc.orr@gmail.com 4349112Smarc.orr@gmail.com} 4359112Smarc.orr@gmail.com 4362238SN/A 4372238SN/A/// Pseudo Funcs - These functions use a different return convension, 4382238SN/A/// returning a second value in a register other than the normal return register 4392238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 4403114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4412238SN/A 4422238SN/A/// Target getpidPseudo() handler. 4432238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4452238SN/A 4462238SN/A/// Target getuidPseudo() handler. 4472238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 4483114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4492238SN/A 4502238SN/A/// Target getgidPseudo() handler. 4512238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4523114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4532238SN/A 4542238SN/A 4551354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4561354SN/Aconst int one_million = 1000000; 4571354SN/A 4581354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4591354SN/A/// by my reckoning. We want to keep this a constant (not use the 4601354SN/A/// real-world time) to keep simulations repeatable. 4611354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4621354SN/A 4631354SN/A/// Helper function to convert current elapsed time to seconds and 4641354SN/A/// microseconds. 4651354SN/Atemplate <class T1, class T2> 4661354SN/Avoid 4671354SN/AgetElapsedTime(T1 &sec, T2 &usec) 4681354SN/A{ 4697823Ssteve.reinhardt@amd.com int elapsed_usecs = curTick() / SimClock::Int::us; 4701354SN/A sec = elapsed_usecs / one_million; 4711354SN/A usec = elapsed_usecs % one_million; 4721354SN/A} 4731354SN/A 474360SN/A////////////////////////////////////////////////////////////////////// 475360SN/A// 476360SN/A// The following emulation functions are generic, but need to be 477360SN/A// templated to account for differences in types, constants, etc. 478360SN/A// 479360SN/A////////////////////////////////////////////////////////////////////// 480360SN/A 4813113Sgblack@eecs.umich.edu#if NO_STAT64 4823113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4833113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4843113Sgblack@eecs.umich.edu#else 4853113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4863113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4873113Sgblack@eecs.umich.edu#endif 4883113Sgblack@eecs.umich.edu 4893113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4903113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4913113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4923113Sgblack@eecs.umich.edu 4933113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4943113Sgblack@eecs.umich.edustatic void 4953113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4963113Sgblack@eecs.umich.edu{ 4974189Sgblack@eecs.umich.edu using namespace TheISA; 4984189Sgblack@eecs.umich.edu 4993113Sgblack@eecs.umich.edu if (fakeTTY) 5003113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 5013113Sgblack@eecs.umich.edu else 5023113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 5038737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 5043113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 5058737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 5063277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 5075515SMichael.Adler@intel.com if (fakeTTY) { 5085515SMichael.Adler@intel.com // Claim to be a character device 5095515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 5105515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 5115515SMichael.Adler@intel.com } 5128737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 5133277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 5148737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 5153277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 5168737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 5173277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 5188737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 5193113Sgblack@eecs.umich.edu if (fakeTTY) 5203113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 5213113Sgblack@eecs.umich.edu else 5223113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 5238737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 5243113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 5258737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 5263114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 5278737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5283114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5298737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5303114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5318737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5324061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5334061Sgblack@eecs.umich.edu // consistently across different hosts. 5344061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5358737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5363113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5378737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5383113Sgblack@eecs.umich.edu} 5393113Sgblack@eecs.umich.edu 5403113Sgblack@eecs.umich.edu// Same for stat64 5413113Sgblack@eecs.umich.edu 5423113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5433113Sgblack@eecs.umich.edustatic void 5443113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5453113Sgblack@eecs.umich.edu{ 5464189Sgblack@eecs.umich.edu using namespace TheISA; 5474189Sgblack@eecs.umich.edu 5483113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5493113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5503113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5518737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5523113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5538737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5543113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5558737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5563113Sgblack@eecs.umich.edu#else 5573113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5583113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5593113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5603113Sgblack@eecs.umich.edu#endif 5613113Sgblack@eecs.umich.edu} 5623113Sgblack@eecs.umich.edu 5633113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5643113Sgblack@eecs.umich.edutemplate<class OS> 5653113Sgblack@eecs.umich.edustatic void 5668852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5673113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5683113Sgblack@eecs.umich.edu{ 5693113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5703113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5713113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5723113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5733113Sgblack@eecs.umich.edu} 5743113Sgblack@eecs.umich.edu 5753113Sgblack@eecs.umich.edutemplate<class OS> 5763113Sgblack@eecs.umich.edustatic void 5778852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5783113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5793113Sgblack@eecs.umich.edu{ 5803113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5813113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5826686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5833113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5843113Sgblack@eecs.umich.edu} 5853113Sgblack@eecs.umich.edu 586378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 587378SN/A/// only to find out if their stdout is a tty, to determine whether to 5889141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5899141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 590360SN/Atemplate <class OS> 5911450SN/ASyscallReturn 5923114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5932680Sktlim@umich.edu ThreadContext *tc) 594360SN/A{ 5956701Sgblack@eecs.umich.edu int index = 0; 5966701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 5976701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 598360SN/A 5991969SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 600360SN/A 601360SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 602360SN/A // doesn't map to any simulator fd: not a valid target fd 6031458SN/A return -EBADF; 604360SN/A } 605360SN/A 6069141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 6071458SN/A return -ENOTTY; 6089141Smarc.orr@gmail.com } 609360SN/A 6109141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 6119141Smarc.orr@gmail.com fd, req, tc->pcState()); 6129141Smarc.orr@gmail.com return -ENOTTY; 613360SN/A} 614360SN/A 615360SN/Atemplate <class OS> 61610027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 6173114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 61810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 619360SN/A{ 620360SN/A std::string path; 621360SN/A 6228852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 6236701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6241458SN/A return -EFAULT; 625360SN/A 626360SN/A if (path == "/dev/sysdev0") { 627360SN/A // This is a memory-mapped high-resolution timer device on Alpha. 628360SN/A // We don't support it, so just punt. 6291706SN/A warn("Ignoring open(%s, ...)\n", path); 6301458SN/A return -ENOENT; 631360SN/A } 632360SN/A 6336701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6346701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 635360SN/A int hostFlags = 0; 636360SN/A 637360SN/A // translate open flags 638360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 639360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 640360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 641360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 642360SN/A } 643360SN/A } 644360SN/A 645360SN/A // any target flags left? 646360SN/A if (tgtFlags != 0) 6471706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 648360SN/A 649360SN/A#ifdef __CYGWIN32__ 650360SN/A hostFlags |= O_BINARY; 651360SN/A#endif 652360SN/A 6533669Sbinkertn@umich.edu // Adjust path for current working directory 6543669Sbinkertn@umich.edu path = process->fullPath(path); 6553669Sbinkertn@umich.edu 6561706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6571706SN/A 6585795Ssaidi@eecs.umich.edu int fd; 6599143Ssteve.reinhardt@amd.com int local_errno; 6609142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6619142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6629143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6635795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6649143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6655795Ssaidi@eecs.umich.edu } else { 6665795Ssaidi@eecs.umich.edu // open the file 6675795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6689143Ssteve.reinhardt@amd.com local_errno = errno; 6695795Ssaidi@eecs.umich.edu } 670360SN/A 6719143Ssteve.reinhardt@amd.com if (fd == -1) 6729143Ssteve.reinhardt@amd.com return -local_errno; 6739143Ssteve.reinhardt@amd.com 6749143Ssteve.reinhardt@amd.com return process->alloc_fd(fd, path.c_str(), hostFlags, mode, false); 675360SN/A} 676360SN/A 67710027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 67810027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 67910027SChris.Adeniyi-Jones@arm.comSyscallReturn 68010027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 68110027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 68210027SChris.Adeniyi-Jones@arm.com{ 68310027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 68410027SChris.Adeniyi-Jones@arm.com} 68510027SChris.Adeniyi-Jones@arm.com 68610027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 68710027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 68810027SChris.Adeniyi-Jones@arm.comSyscallReturn 68910027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69010027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 69110027SChris.Adeniyi-Jones@arm.com{ 69210027SChris.Adeniyi-Jones@arm.com int index = 0; 69310027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 69410027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 69510027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 69610027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 69710027SChris.Adeniyi-Jones@arm.com} 69810027SChris.Adeniyi-Jones@arm.com 6996640Svince@csl.cornell.edu/// Target sysinfo() handler. 7006640Svince@csl.cornell.edutemplate <class OS> 7016640Svince@csl.cornell.eduSyscallReturn 7026640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7036640Svince@csl.cornell.edu ThreadContext *tc) 7046640Svince@csl.cornell.edu{ 7056640Svince@csl.cornell.edu 7066701Sgblack@eecs.umich.edu int index = 0; 7076701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 7086701Sgblack@eecs.umich.edu sysinfo(process->getSyscallArg(tc, index)); 7096640Svince@csl.cornell.edu 7106701Sgblack@eecs.umich.edu sysinfo->uptime=seconds_since_epoch; 7116701Sgblack@eecs.umich.edu sysinfo->totalram=process->system->memSize(); 7126640Svince@csl.cornell.edu 7138706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7146640Svince@csl.cornell.edu 7156701Sgblack@eecs.umich.edu return 0; 7166640Svince@csl.cornell.edu} 717360SN/A 7181999SN/A/// Target chmod() handler. 7191999SN/Atemplate <class OS> 7201999SN/ASyscallReturn 7213114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7222680Sktlim@umich.edu ThreadContext *tc) 7231999SN/A{ 7241999SN/A std::string path; 7251999SN/A 7266701Sgblack@eecs.umich.edu int index = 0; 7278852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7286701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7291999SN/A return -EFAULT; 7306701Sgblack@eecs.umich.edu } 7311999SN/A 7326701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7331999SN/A mode_t hostMode = 0; 7341999SN/A 7351999SN/A // XXX translate mode flags via OS::something??? 7361999SN/A hostMode = mode; 7371999SN/A 7383669Sbinkertn@umich.edu // Adjust path for current working directory 7393669Sbinkertn@umich.edu path = process->fullPath(path); 7403669Sbinkertn@umich.edu 7411999SN/A // do the chmod 7421999SN/A int result = chmod(path.c_str(), hostMode); 7431999SN/A if (result < 0) 7442218SN/A return -errno; 7451999SN/A 7461999SN/A return 0; 7471999SN/A} 7481999SN/A 7491999SN/A 7501999SN/A/// Target fchmod() handler. 7511999SN/Atemplate <class OS> 7521999SN/ASyscallReturn 7533114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7542680Sktlim@umich.edu ThreadContext *tc) 7551999SN/A{ 7566701Sgblack@eecs.umich.edu int index = 0; 7576701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 7581999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 7591999SN/A // doesn't map to any simulator fd: not a valid target fd 7601999SN/A return -EBADF; 7611999SN/A } 7621999SN/A 7636701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7641999SN/A mode_t hostMode = 0; 7651999SN/A 7661999SN/A // XXX translate mode flags via OS::someting??? 7671999SN/A hostMode = mode; 7681999SN/A 7691999SN/A // do the fchmod 7701999SN/A int result = fchmod(process->sim_fd(fd), hostMode); 7711999SN/A if (result < 0) 7722218SN/A return -errno; 7731999SN/A 7741999SN/A return 0; 7751999SN/A} 7761999SN/A 7775877Shsul@eecs.umich.edu/// Target mremap() handler. 7785877Shsul@eecs.umich.edutemplate <class OS> 7795877Shsul@eecs.umich.eduSyscallReturn 7805877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 7815877Shsul@eecs.umich.edu{ 7826701Sgblack@eecs.umich.edu int index = 0; 7836701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 7846701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 7856701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 7866701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 78710027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 78810027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 78910027SChris.Adeniyi-Jones@arm.com 79010027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 79110027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 7925877Shsul@eecs.umich.edu 7935877Shsul@eecs.umich.edu if ((start % TheISA::VMPageSize != 0) || 79410027SChris.Adeniyi-Jones@arm.com (new_length % TheISA::VMPageSize != 0) || 79510027SChris.Adeniyi-Jones@arm.com (provided_address % TheISA::VMPageSize != 0)) { 7965877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 7975877Shsul@eecs.umich.edu return -EINVAL; 7985877Shsul@eecs.umich.edu } 7995877Shsul@eecs.umich.edu 8005877Shsul@eecs.umich.edu if (new_length > old_length) { 80110027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 80210027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8035877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8048601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8055877Shsul@eecs.umich.edu process->mmap_end += diff; 8065877Shsul@eecs.umich.edu return start; 8075877Shsul@eecs.umich.edu } else { 80810027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8095877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8105877Shsul@eecs.umich.edu return -ENOMEM; 8115877Shsul@eecs.umich.edu } else { 81210027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 81310027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 81410027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 81510027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 81610027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 81710027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8185877Shsul@eecs.umich.edu // add on the remaining unallocated pages 81910027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 82010027SChris.Adeniyi-Jones@arm.com new_length - old_length, 82110027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 82210027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 82310027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 82410027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 82510027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 82610027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 82710027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 82810027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 82910027SChris.Adeniyi-Jones@arm.com } 83010027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 83110027SChris.Adeniyi-Jones@arm.com return new_start; 8325877Shsul@eecs.umich.edu } 8335877Shsul@eecs.umich.edu } 8345877Shsul@eecs.umich.edu } else { 83510027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 83610027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 8378601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 83810027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 8395877Shsul@eecs.umich.edu } 8405877Shsul@eecs.umich.edu} 8411999SN/A 842378SN/A/// Target stat() handler. 843360SN/Atemplate <class OS> 8441450SN/ASyscallReturn 8453114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8462680Sktlim@umich.edu ThreadContext *tc) 847360SN/A{ 848360SN/A std::string path; 849360SN/A 8506701Sgblack@eecs.umich.edu int index = 0; 8518852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8526701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8536701Sgblack@eecs.umich.edu return -EFAULT; 8546701Sgblack@eecs.umich.edu } 8556701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 856360SN/A 8573669Sbinkertn@umich.edu // Adjust path for current working directory 8583669Sbinkertn@umich.edu path = process->fullPath(path); 8593669Sbinkertn@umich.edu 860360SN/A struct stat hostBuf; 861360SN/A int result = stat(path.c_str(), &hostBuf); 862360SN/A 863360SN/A if (result < 0) 8642218SN/A return -errno; 865360SN/A 8668706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 867360SN/A 8681458SN/A return 0; 869360SN/A} 870360SN/A 871360SN/A 8725074Ssaidi@eecs.umich.edu/// Target stat64() handler. 8735074Ssaidi@eecs.umich.edutemplate <class OS> 8745074Ssaidi@eecs.umich.eduSyscallReturn 8755074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 8765074Ssaidi@eecs.umich.edu ThreadContext *tc) 8775074Ssaidi@eecs.umich.edu{ 8785074Ssaidi@eecs.umich.edu std::string path; 8795074Ssaidi@eecs.umich.edu 8806701Sgblack@eecs.umich.edu int index = 0; 8818852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8826701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 8835074Ssaidi@eecs.umich.edu return -EFAULT; 8846701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 8855074Ssaidi@eecs.umich.edu 8865074Ssaidi@eecs.umich.edu // Adjust path for current working directory 8875074Ssaidi@eecs.umich.edu path = process->fullPath(path); 8885074Ssaidi@eecs.umich.edu 8895208Ssaidi@eecs.umich.edu#if NO_STAT64 8905208Ssaidi@eecs.umich.edu struct stat hostBuf; 8915208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 8925208Ssaidi@eecs.umich.edu#else 8935074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 8945074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 8955208Ssaidi@eecs.umich.edu#endif 8965074Ssaidi@eecs.umich.edu 8975074Ssaidi@eecs.umich.edu if (result < 0) 8985074Ssaidi@eecs.umich.edu return -errno; 8995074Ssaidi@eecs.umich.edu 9008706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9015074Ssaidi@eecs.umich.edu 9025074Ssaidi@eecs.umich.edu return 0; 9035074Ssaidi@eecs.umich.edu} 9045074Ssaidi@eecs.umich.edu 9055074Ssaidi@eecs.umich.edu 90610027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 90710027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 90810027SChris.Adeniyi-Jones@arm.comSyscallReturn 90910027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 91010027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 91110027SChris.Adeniyi-Jones@arm.com{ 91210027SChris.Adeniyi-Jones@arm.com int index = 0; 91310027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 91410027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 91510027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 91610027SChris.Adeniyi-Jones@arm.com 91710027SChris.Adeniyi-Jones@arm.com std::string path; 91810027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 91910027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 92010027SChris.Adeniyi-Jones@arm.com return -EFAULT; 92110027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 92210027SChris.Adeniyi-Jones@arm.com 92310027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 92410027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 92510027SChris.Adeniyi-Jones@arm.com 92610027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 92710027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 92810027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 92910027SChris.Adeniyi-Jones@arm.com#else 93010027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 93110027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 93210027SChris.Adeniyi-Jones@arm.com#endif 93310027SChris.Adeniyi-Jones@arm.com 93410027SChris.Adeniyi-Jones@arm.com if (result < 0) 93510027SChris.Adeniyi-Jones@arm.com return -errno; 93610027SChris.Adeniyi-Jones@arm.com 93710027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 93810027SChris.Adeniyi-Jones@arm.com 93910027SChris.Adeniyi-Jones@arm.com return 0; 94010027SChris.Adeniyi-Jones@arm.com} 94110027SChris.Adeniyi-Jones@arm.com 94210027SChris.Adeniyi-Jones@arm.com 9431999SN/A/// Target fstat64() handler. 9441999SN/Atemplate <class OS> 9451999SN/ASyscallReturn 9463114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9472680Sktlim@umich.edu ThreadContext *tc) 9481999SN/A{ 9496701Sgblack@eecs.umich.edu int index = 0; 9506701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 9516701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9521999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 9531999SN/A // doesn't map to any simulator fd: not a valid target fd 9541999SN/A return -EBADF; 9551999SN/A } 9561999SN/A 9572764Sstever@eecs.umich.edu#if NO_STAT64 9582064SN/A struct stat hostBuf; 9592064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 9602064SN/A#else 9612064SN/A struct stat64 hostBuf; 9621999SN/A int result = fstat64(process->sim_fd(fd), &hostBuf); 9632064SN/A#endif 9641999SN/A 9651999SN/A if (result < 0) 9662218SN/A return -errno; 9671999SN/A 9688706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 9691999SN/A 9701999SN/A return 0; 9711999SN/A} 9721999SN/A 9731999SN/A 974378SN/A/// Target lstat() handler. 975360SN/Atemplate <class OS> 9761450SN/ASyscallReturn 9773114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9782680Sktlim@umich.edu ThreadContext *tc) 979360SN/A{ 980360SN/A std::string path; 981360SN/A 9826701Sgblack@eecs.umich.edu int index = 0; 9838852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9846701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9856701Sgblack@eecs.umich.edu return -EFAULT; 9866701Sgblack@eecs.umich.edu } 9876701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 988360SN/A 9893669Sbinkertn@umich.edu // Adjust path for current working directory 9903669Sbinkertn@umich.edu path = process->fullPath(path); 9913669Sbinkertn@umich.edu 992360SN/A struct stat hostBuf; 993360SN/A int result = lstat(path.c_str(), &hostBuf); 994360SN/A 995360SN/A if (result < 0) 9961458SN/A return -errno; 997360SN/A 9988706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 999360SN/A 10001458SN/A return 0; 1001360SN/A} 1002360SN/A 10031999SN/A/// Target lstat64() handler. 10041999SN/Atemplate <class OS> 10051999SN/ASyscallReturn 10063114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10072680Sktlim@umich.edu ThreadContext *tc) 10081999SN/A{ 10091999SN/A std::string path; 10101999SN/A 10116701Sgblack@eecs.umich.edu int index = 0; 10128852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10136701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10146701Sgblack@eecs.umich.edu return -EFAULT; 10156701Sgblack@eecs.umich.edu } 10166701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10171999SN/A 10183669Sbinkertn@umich.edu // Adjust path for current working directory 10193669Sbinkertn@umich.edu path = process->fullPath(path); 10203669Sbinkertn@umich.edu 10212764Sstever@eecs.umich.edu#if NO_STAT64 10222064SN/A struct stat hostBuf; 10232064SN/A int result = lstat(path.c_str(), &hostBuf); 10242064SN/A#else 10251999SN/A struct stat64 hostBuf; 10261999SN/A int result = lstat64(path.c_str(), &hostBuf); 10272064SN/A#endif 10281999SN/A 10291999SN/A if (result < 0) 10301999SN/A return -errno; 10311999SN/A 10328706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10331999SN/A 10341999SN/A return 0; 10351999SN/A} 10361999SN/A 1037378SN/A/// Target fstat() handler. 1038360SN/Atemplate <class OS> 10391450SN/ASyscallReturn 10403114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10412680Sktlim@umich.edu ThreadContext *tc) 1042360SN/A{ 10436701Sgblack@eecs.umich.edu int index = 0; 10446701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 10456701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1046360SN/A 10471969SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 1048360SN/A 1049360SN/A if (fd < 0) 10501458SN/A return -EBADF; 1051360SN/A 1052360SN/A struct stat hostBuf; 1053360SN/A int result = fstat(fd, &hostBuf); 1054360SN/A 1055360SN/A if (result < 0) 10561458SN/A return -errno; 1057360SN/A 10588706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 10592021SN/A 10601458SN/A return 0; 1061360SN/A} 1062360SN/A 1063360SN/A 10641706SN/A/// Target statfs() handler. 10651706SN/Atemplate <class OS> 10661706SN/ASyscallReturn 10673114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10682680Sktlim@umich.edu ThreadContext *tc) 10691706SN/A{ 10701706SN/A std::string path; 10711706SN/A 10726701Sgblack@eecs.umich.edu int index = 0; 10738852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10746701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10756701Sgblack@eecs.umich.edu return -EFAULT; 10766701Sgblack@eecs.umich.edu } 10776701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10781706SN/A 10793669Sbinkertn@umich.edu // Adjust path for current working directory 10803669Sbinkertn@umich.edu path = process->fullPath(path); 10813669Sbinkertn@umich.edu 10821706SN/A struct statfs hostBuf; 10831706SN/A int result = statfs(path.c_str(), &hostBuf); 10841706SN/A 10851706SN/A if (result < 0) 10862218SN/A return -errno; 10871706SN/A 10888706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 10891706SN/A 10901706SN/A return 0; 10911706SN/A} 10921706SN/A 10931706SN/A 10941706SN/A/// Target fstatfs() handler. 10951706SN/Atemplate <class OS> 10961706SN/ASyscallReturn 10973114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10982680Sktlim@umich.edu ThreadContext *tc) 10991706SN/A{ 11006701Sgblack@eecs.umich.edu int index = 0; 11016701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 11026701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11031706SN/A 11041706SN/A if (fd < 0) 11051706SN/A return -EBADF; 11061706SN/A 11071706SN/A struct statfs hostBuf; 11081706SN/A int result = fstatfs(fd, &hostBuf); 11091706SN/A 11101706SN/A if (result < 0) 11112218SN/A return -errno; 11121706SN/A 11138706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11141706SN/A 11151706SN/A return 0; 11161706SN/A} 11171706SN/A 11181706SN/A 11191999SN/A/// Target writev() handler. 11201999SN/Atemplate <class OS> 11211999SN/ASyscallReturn 11223114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11232680Sktlim@umich.edu ThreadContext *tc) 11241999SN/A{ 11256701Sgblack@eecs.umich.edu int index = 0; 11266701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 11271999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 11281999SN/A // doesn't map to any simulator fd: not a valid target fd 11291999SN/A return -EBADF; 11301999SN/A } 11311999SN/A 11328852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 11336701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 11346701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 11351999SN/A struct iovec hiov[count]; 11366227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 11371999SN/A typename OS::tgt_iovec tiov; 11382461SN/A 11398852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 11408852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 11418737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 11421999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 11438852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 11448852Sandreas.hansson@arm.com hiov[i].iov_len); 11451999SN/A } 11461999SN/A 11471999SN/A int result = writev(process->sim_fd(fd), hiov, count); 11481999SN/A 11496227Snate@binkert.org for (size_t i = 0; i < count; ++i) 11501999SN/A delete [] (char *)hiov[i].iov_base; 11511999SN/A 11521999SN/A if (result < 0) 11532218SN/A return -errno; 11541999SN/A 11551999SN/A return 0; 11561999SN/A} 11571999SN/A 11581999SN/A 1159378SN/A/// Target mmap() handler. 1160378SN/A/// 1161378SN/A/// We don't really handle mmap(). If the target is mmaping an 1162378SN/A/// anonymous region or /dev/zero, we can get away with doing basically 1163378SN/A/// nothing (since memory is initialized to zero and the simulator 11648324Ssteve.reinhardt@amd.com/// doesn't really check addresses anyway). 11658324Ssteve.reinhardt@amd.com/// 1166360SN/Atemplate <class OS> 11671450SN/ASyscallReturn 11683114Sgblack@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1169360SN/A{ 11706701Sgblack@eecs.umich.edu int index = 0; 11716701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 11726701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 11736701Sgblack@eecs.umich.edu index++; // int prot = p->getSyscallArg(tc, index); 11746701Sgblack@eecs.umich.edu int flags = p->getSyscallArg(tc, index); 11758324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 11766701Sgblack@eecs.umich.edu // int offset = p->getSyscallArg(tc, index); 1177360SN/A 11789008Sgblack@eecs.umich.edu if (length > 0x100000000ULL) 11799008Sgblack@eecs.umich.edu warn("mmap length argument %#x is unreasonably large.\n", length); 11809008Sgblack@eecs.umich.edu 11818324Ssteve.reinhardt@amd.com if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 11828324Ssteve.reinhardt@amd.com Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd); 11838324Ssteve.reinhardt@amd.com if (!fd_map || fd_map->fd < 0) { 11848324Ssteve.reinhardt@amd.com warn("mmap failing: target fd %d is not valid\n", tgt_fd); 11858324Ssteve.reinhardt@amd.com return -EBADF; 11868324Ssteve.reinhardt@amd.com } 11878324Ssteve.reinhardt@amd.com 11888324Ssteve.reinhardt@amd.com if (fd_map->filename != "/dev/zero") { 11898324Ssteve.reinhardt@amd.com // This is very likely broken, but leave a warning here 11908324Ssteve.reinhardt@amd.com // (rather than panic) in case /dev/zero is known by 11918324Ssteve.reinhardt@amd.com // another name on some platform 11928324Ssteve.reinhardt@amd.com warn("allowing mmap of file %s; mmap not supported on files" 11938324Ssteve.reinhardt@amd.com " other than /dev/zero\n", fd_map->filename); 11948324Ssteve.reinhardt@amd.com } 11958324Ssteve.reinhardt@amd.com } 11965877Shsul@eecs.umich.edu 11972544SN/A if ((start % TheISA::VMPageSize) != 0 || 11982544SN/A (length % TheISA::VMPageSize) != 0) { 11992544SN/A warn("mmap failing: arguments not page-aligned: " 12002544SN/A "start 0x%x length 0x%x", 12012544SN/A start, length); 12022544SN/A return -EINVAL; 1203360SN/A } 1204360SN/A 12058600Ssteve.reinhardt@amd.com // are we ok with clobbering existing mappings? only set this to 12068600Ssteve.reinhardt@amd.com // true if the user has been warned. 12078600Ssteve.reinhardt@amd.com bool clobber = false; 12088600Ssteve.reinhardt@amd.com 12098600Ssteve.reinhardt@amd.com // try to use the caller-provided address if there is one 12108600Ssteve.reinhardt@amd.com bool use_provided_address = (start != 0); 12118600Ssteve.reinhardt@amd.com 12128600Ssteve.reinhardt@amd.com if (use_provided_address) { 12138600Ssteve.reinhardt@amd.com // check to see if the desired address is already in use 12148600Ssteve.reinhardt@amd.com if (!p->pTable->isUnmapped(start, length)) { 12158600Ssteve.reinhardt@amd.com // there are existing mappings in the desired range 12168600Ssteve.reinhardt@amd.com // whether we clobber them or not depends on whether the caller 12178600Ssteve.reinhardt@amd.com // specified MAP_FIXED 12188600Ssteve.reinhardt@amd.com if (flags & OS::TGT_MAP_FIXED) { 12198600Ssteve.reinhardt@amd.com // MAP_FIXED specified: clobber existing mappings 12208600Ssteve.reinhardt@amd.com warn("mmap: MAP_FIXED at 0x%x overwrites existing mappings\n", 12218600Ssteve.reinhardt@amd.com start); 12228600Ssteve.reinhardt@amd.com clobber = true; 12238600Ssteve.reinhardt@amd.com } else { 12248600Ssteve.reinhardt@amd.com // MAP_FIXED not specified: ignore suggested start address 12258600Ssteve.reinhardt@amd.com warn("mmap: ignoring suggested map address 0x%x\n", start); 12268600Ssteve.reinhardt@amd.com use_provided_address = false; 12278600Ssteve.reinhardt@amd.com } 12288600Ssteve.reinhardt@amd.com } 12292544SN/A } 12302544SN/A 12318600Ssteve.reinhardt@amd.com if (!use_provided_address) { 12328600Ssteve.reinhardt@amd.com // no address provided, or provided address unusable: 12338600Ssteve.reinhardt@amd.com // pick next address from our "mmap region" 12348600Ssteve.reinhardt@amd.com if (OS::mmapGrowsDown()) { 12358600Ssteve.reinhardt@amd.com start = p->mmap_end - length; 12368600Ssteve.reinhardt@amd.com p->mmap_end = start; 12378600Ssteve.reinhardt@amd.com } else { 12388600Ssteve.reinhardt@amd.com start = p->mmap_end; 12398600Ssteve.reinhardt@amd.com p->mmap_end += length; 12408600Ssteve.reinhardt@amd.com } 12416672Sgblack@eecs.umich.edu } 12428600Ssteve.reinhardt@amd.com 12438601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 12442544SN/A 12451458SN/A return start; 1246360SN/A} 1247360SN/A 1248378SN/A/// Target getrlimit() handler. 1249360SN/Atemplate <class OS> 12501450SN/ASyscallReturn 12513114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12522680Sktlim@umich.edu ThreadContext *tc) 1253360SN/A{ 12546701Sgblack@eecs.umich.edu int index = 0; 12556701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 12566701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1257360SN/A 1258360SN/A switch (resource) { 12592064SN/A case OS::TGT_RLIMIT_STACK: 12605877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 12612064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 12628737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 12638737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 12642064SN/A break; 1265360SN/A 12665877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 12675877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 12685877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 12698737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 12708737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 12715877Shsul@eecs.umich.edu break; 12725877Shsul@eecs.umich.edu 12732064SN/A default: 12742064SN/A std::cerr << "getrlimitFunc: unimplemented resource " << resource 12752064SN/A << std::endl; 12762064SN/A abort(); 12772064SN/A break; 1278360SN/A } 1279360SN/A 12808706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 12811458SN/A return 0; 1282360SN/A} 1283360SN/A 1284378SN/A/// Target gettimeofday() handler. 1285360SN/Atemplate <class OS> 12861450SN/ASyscallReturn 12873114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12882680Sktlim@umich.edu ThreadContext *tc) 1289360SN/A{ 12906701Sgblack@eecs.umich.edu int index = 0; 12916701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1292360SN/A 1293360SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1294360SN/A tp->tv_sec += seconds_since_epoch; 12956109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 12966109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1297360SN/A 12988706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1299360SN/A 13001458SN/A return 0; 1301360SN/A} 1302360SN/A 1303360SN/A 13041999SN/A/// Target utimes() handler. 13051999SN/Atemplate <class OS> 13061999SN/ASyscallReturn 13073114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13082680Sktlim@umich.edu ThreadContext *tc) 13091999SN/A{ 13101999SN/A std::string path; 13111999SN/A 13126701Sgblack@eecs.umich.edu int index = 0; 13138852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 13146701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 13156701Sgblack@eecs.umich.edu return -EFAULT; 13166701Sgblack@eecs.umich.edu } 13171999SN/A 13186701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 13196701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 13208706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 13211999SN/A 13221999SN/A struct timeval hostTimeval[2]; 13231999SN/A for (int i = 0; i < 2; ++i) 13241999SN/A { 13258737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 13268737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 13271999SN/A } 13283669Sbinkertn@umich.edu 13293669Sbinkertn@umich.edu // Adjust path for current working directory 13303669Sbinkertn@umich.edu path = process->fullPath(path); 13313669Sbinkertn@umich.edu 13321999SN/A int result = utimes(path.c_str(), hostTimeval); 13331999SN/A 13341999SN/A if (result < 0) 13351999SN/A return -errno; 13361999SN/A 13371999SN/A return 0; 13381999SN/A} 1339378SN/A/// Target getrusage() function. 1340360SN/Atemplate <class OS> 13411450SN/ASyscallReturn 13423114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13432680Sktlim@umich.edu ThreadContext *tc) 1344360SN/A{ 13456701Sgblack@eecs.umich.edu int index = 0; 13466701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 13476701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1348360SN/A 13493670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 13503670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1351360SN/A rup->ru_stime.tv_sec = 0; 1352360SN/A rup->ru_stime.tv_usec = 0; 1353360SN/A rup->ru_maxrss = 0; 1354360SN/A rup->ru_ixrss = 0; 1355360SN/A rup->ru_idrss = 0; 1356360SN/A rup->ru_isrss = 0; 1357360SN/A rup->ru_minflt = 0; 1358360SN/A rup->ru_majflt = 0; 1359360SN/A rup->ru_nswap = 0; 1360360SN/A rup->ru_inblock = 0; 1361360SN/A rup->ru_oublock = 0; 1362360SN/A rup->ru_msgsnd = 0; 1363360SN/A rup->ru_msgrcv = 0; 1364360SN/A rup->ru_nsignals = 0; 1365360SN/A rup->ru_nvcsw = 0; 1366360SN/A rup->ru_nivcsw = 0; 1367360SN/A 13683670Sbinkertn@umich.edu switch (who) { 13693670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 13703670Sbinkertn@umich.edu getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 13718737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 13728737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 13733670Sbinkertn@umich.edu break; 13743670Sbinkertn@umich.edu 13753670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 13763670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 13773670Sbinkertn@umich.edu break; 13783670Sbinkertn@umich.edu 13793670Sbinkertn@umich.edu default: 13803670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 13813670Sbinkertn@umich.edu // plow ahead 13823670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 13833670Sbinkertn@umich.edu who); 13843670Sbinkertn@umich.edu } 13853670Sbinkertn@umich.edu 13868706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1387360SN/A 13881458SN/A return 0; 1389360SN/A} 1390360SN/A 13916683Stjones1@inf.ed.ac.uk/// Target times() function. 13926683Stjones1@inf.ed.ac.uktemplate <class OS> 13936683Stjones1@inf.ed.ac.ukSyscallReturn 13946683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13956683Stjones1@inf.ed.ac.uk ThreadContext *tc) 13966683Stjones1@inf.ed.ac.uk{ 13976701Sgblack@eecs.umich.edu int index = 0; 13986701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 13996683Stjones1@inf.ed.ac.uk 14006683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 14017823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 14026683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 14036683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 14046683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 14056683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 14066683Stjones1@inf.ed.ac.uk 14076683Stjones1@inf.ed.ac.uk // Convert to host endianness 14088737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 14096683Stjones1@inf.ed.ac.uk 14106683Stjones1@inf.ed.ac.uk // Write back 14118706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 14126683Stjones1@inf.ed.ac.uk 14136683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 14146683Stjones1@inf.ed.ac.uk return clocks; 14156683Stjones1@inf.ed.ac.uk} 14162553SN/A 14176684Stjones1@inf.ed.ac.uk/// Target time() function. 14186684Stjones1@inf.ed.ac.uktemplate <class OS> 14196684Stjones1@inf.ed.ac.ukSyscallReturn 14206684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14216684Stjones1@inf.ed.ac.uk ThreadContext *tc) 14226684Stjones1@inf.ed.ac.uk{ 14236684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 14246684Stjones1@inf.ed.ac.uk getElapsedTime(sec, usec); 14256684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 14266684Stjones1@inf.ed.ac.uk 14276701Sgblack@eecs.umich.edu int index = 0; 14286701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 14296684Stjones1@inf.ed.ac.uk if(taddr != 0) { 14306684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 14318737Skoansin.tan@gmail.com t = TheISA::htog(t); 14328852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 14338852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 14346684Stjones1@inf.ed.ac.uk } 14356684Stjones1@inf.ed.ac.uk return sec; 14366684Stjones1@inf.ed.ac.uk} 14372553SN/A 14382553SN/A 14391354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1440