syscall_emul.hh revision 11593
1360SN/A/* 210850SGiacomo.Gabrielli@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 310796Sbrandon.potter@amd.com * Copyright (c) 2015 Advanced Micro Devices, Inc. 410027SChris.Adeniyi-Jones@arm.com * All rights reserved 510027SChris.Adeniyi-Jones@arm.com * 610027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 710027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 810027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 910027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 1010027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1110027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1210027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1310027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1410027SChris.Adeniyi-Jones@arm.com * 151458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 16360SN/A * All rights reserved. 17360SN/A * 18360SN/A * Redistribution and use in source and binary forms, with or without 19360SN/A * modification, are permitted provided that the following conditions are 20360SN/A * met: redistributions of source code must retain the above copyright 21360SN/A * notice, this list of conditions and the following disclaimer; 22360SN/A * redistributions in binary form must reproduce the above copyright 23360SN/A * notice, this list of conditions and the following disclaimer in the 24360SN/A * documentation and/or other materials provided with the distribution; 25360SN/A * neither the name of the copyright holders nor the names of its 26360SN/A * contributors may be used to endorse or promote products derived from 27360SN/A * this software without specific prior written permission. 28360SN/A * 29360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 422665Ssaidi@eecs.umich.edu * Kevin Lim 43360SN/A */ 44360SN/A 451354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 461354SN/A#define __SIM_SYSCALL_EMUL_HH__ 47360SN/A 482764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 499202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 509202Spalle@lyckegaard.dk defined(__NetBSD__)) 512064SN/A 52360SN/A/// 53360SN/A/// @file syscall_emul.hh 54360SN/A/// 55360SN/A/// This file defines objects used to emulate syscalls from the target 56360SN/A/// application on the host machine. 57360SN/A 581809SN/A#ifdef __CYGWIN32__ 595543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 6011392Sbrandon.potter@amd.com 611809SN/A#endif 6211392Sbrandon.potter@amd.com#include <fcntl.h> 6311383Sbrandon.potter@amd.com#include <sys/mman.h> 643113Sgblack@eecs.umich.edu#include <sys/stat.h> 658229Snate@binkert.org#include <sys/time.h> 668229Snate@binkert.org#include <sys/uio.h> 677075Snate@binkert.org 688229Snate@binkert.org#include <cerrno> 697075Snate@binkert.org#include <string> 70360SN/A 712474SN/A#include "base/chunk_generator.hh" 725543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 7311392Sbrandon.potter@amd.com#include "base/loader/object_file.hh" 742462SN/A#include "base/misc.hh" 751354SN/A#include "base/trace.hh" 766216Snate@binkert.org#include "base/types.hh" 776658Snate@binkert.org#include "config/the_isa.hh" 782474SN/A#include "cpu/base.hh" 792680Sktlim@umich.edu#include "cpu/thread_context.hh" 8011380Salexandru.dutu@amd.com#include "debug/SyscallBase.hh" 818232Snate@binkert.org#include "debug/SyscallVerbose.hh" 828229Snate@binkert.org#include "mem/page_table.hh" 837678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 8410496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 858229Snate@binkert.org#include "sim/process.hh" 8610497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 878766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 886640Svince@csl.cornell.edu#include "sim/system.hh" 89360SN/A 9011380Salexandru.dutu@amd.com// This wrapper macro helps out with readability a bit. FLAGEXT specifies 9111380Salexandru.dutu@amd.com// the verbosity and FMT is the message to be appended to the syscall 9211380Salexandru.dutu@amd.com// header information. The syscall header information contains the cpuid 9311380Salexandru.dutu@amd.com// and thread id. 9411380Salexandru.dutu@amd.com#define DPRINTF_SYSCALL(FLAGEXT, FMT, ...) \ 9511380Salexandru.dutu@amd.com DPRINTFS(Syscall##FLAGEXT, tc->getCpuPtr(), "T%d : syscall " FMT, \ 9611380Salexandru.dutu@amd.com tc->threadId(), __VA_ARGS__) 9711380Salexandru.dutu@amd.com 98360SN/A/// 99360SN/A/// System call descriptor. 100360SN/A/// 101360SN/Aclass SyscallDesc { 102360SN/A 103360SN/A public: 104360SN/A 105378SN/A /// Typedef for target syscall handler functions. 1061450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 1073114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 108360SN/A 1095543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 1105543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 1115543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 11210831Ssteve.reinhardt@amd.com bool warned; //!< Have we warned about unimplemented syscall? 113360SN/A 114360SN/A /// Flag values for controlling syscall behavior. 115360SN/A enum Flags { 116360SN/A /// Don't set return regs according to funcPtr return value. 117360SN/A /// Used for syscalls with non-standard return conventions 1182680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 119360SN/A /// sigreturn). 12010831Ssteve.reinhardt@amd.com SuppressReturnValue = 1, 12110831Ssteve.reinhardt@amd.com WarnOnce = 2 122360SN/A }; 123360SN/A 124360SN/A /// Constructor. 125360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 12610831Ssteve.reinhardt@amd.com : name(_name), funcPtr(_funcPtr), flags(_flags), warned(false) 127360SN/A { 128360SN/A } 129360SN/A 130360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1313114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 13210831Ssteve.reinhardt@amd.com 13310831Ssteve.reinhardt@amd.com /// Is the WarnOnce flag set? 13410831Ssteve.reinhardt@amd.com bool warnOnce() const { return (flags & WarnOnce); } 135360SN/A}; 136360SN/A 137360SN/A 138360SN/A////////////////////////////////////////////////////////////////////// 139360SN/A// 140360SN/A// The following emulation functions are generic enough that they 141360SN/A// don't need to be recompiled for different emulated OS's. They are 142360SN/A// defined in sim/syscall_emul.cc. 143360SN/A// 144360SN/A////////////////////////////////////////////////////////////////////// 145360SN/A 146360SN/A 147378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1481706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1493114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 150378SN/A 151378SN/A/// Handler for unimplemented syscalls that we never intend to 152378SN/A/// implement (signal handling, etc.) and should not affect the correct 153378SN/A/// behavior of the program. Print a warning only if the appropriate 154378SN/A/// trace flag is enabled. Return success to the target program. 1551706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1563114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 157360SN/A 1586109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1591706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 161378SN/A 1626109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1636109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1646109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1656109Ssanchezd@stanford.edu 166378SN/A/// Target getpagesize() handler. 1671706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1683114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 169378SN/A 1705748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1715748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1725748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 173378SN/A 174378SN/A/// Target close() handler. 1751706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1763114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 177378SN/A 178378SN/A/// Target read() handler. 1791706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1803114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 181378SN/A 182378SN/A/// Target write() handler. 1831706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 185378SN/A 186378SN/A/// Target lseek() handler. 1871706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1883114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 189378SN/A 1904118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1914118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1924118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1934118Sgblack@eecs.umich.edu 194378SN/A/// Target munmap() handler. 1951706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1963114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 197378SN/A 198378SN/A/// Target gethostname() handler. 1991706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 2003114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 201360SN/A 2025513SMichael.Adler@intel.com/// Target getcwd() handler. 2035513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 2045513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2055513SMichael.Adler@intel.com 20610203SAli.Saidi@ARM.com/// Target readlink() handler. 20710203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 20810203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 20910203SAli.Saidi@ARM.com int index = 0); 2105513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 2115513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2125513SMichael.Adler@intel.com 213511SN/A/// Target unlink() handler. 21410633Smichaelupton@gmail.comSyscallReturn unlinkHelper(SyscallDesc *desc, int num, 21510633Smichaelupton@gmail.com LiveProcess *p, ThreadContext *tc, 21610633Smichaelupton@gmail.com int index); 2171706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 2183114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 219511SN/A 2205513SMichael.Adler@intel.com/// Target mkdir() handler. 2215513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2225513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2235513SMichael.Adler@intel.com 224511SN/A/// Target rename() handler. 2251706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2263114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2271706SN/A 2281706SN/A 2291706SN/A/// Target truncate() handler. 2301706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2313114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2321706SN/A 2331706SN/A 2341706SN/A/// Target ftruncate() handler. 2351706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2363114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2371706SN/A 238511SN/A 2396703Svince@csl.cornell.edu/// Target truncate64() handler. 2406703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2416703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2426703Svince@csl.cornell.edu 2436685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2446685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2456685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2466685Stjones1@inf.ed.ac.uk 2476685Stjones1@inf.ed.ac.uk 2485513SMichael.Adler@intel.com/// Target umask() handler. 2495513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2505513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2515513SMichael.Adler@intel.com 2525513SMichael.Adler@intel.com 2531999SN/A/// Target chown() handler. 2541999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2553114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2561999SN/A 2571999SN/A 2581999SN/A/// Target fchown() handler. 2591999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2611999SN/A 2623079Sstever@eecs.umich.edu/// Target dup() handler. 2633079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2643114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2653079Sstever@eecs.umich.edu 2662093SN/A/// Target fnctl() handler. 2672093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2683114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2692093SN/A 2702687Sksewell@umich.edu/// Target fcntl64() handler. 2712687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2723114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2732687Sksewell@umich.edu 2742238SN/A/// Target setuid() handler. 2752238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2763114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2772238SN/A 2782238SN/A/// Target getpid() handler. 2792238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2803114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2812238SN/A 2822238SN/A/// Target getuid() handler. 2832238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2852238SN/A 2862238SN/A/// Target getgid() handler. 2872238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2883114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2892238SN/A 2902238SN/A/// Target getppid() handler. 2912238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2923114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2932238SN/A 2942238SN/A/// Target geteuid() handler. 2952238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2963114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2972238SN/A 2982238SN/A/// Target getegid() handler. 2992238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 3003114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3012238SN/A 3026109Ssanchezd@stanford.edu/// Target clone() handler. 3036109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 3046109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 3052238SN/A 3069455Smitch.hayenga+gem5@gmail.com/// Target access() handler 3079455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 3089455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 30910203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 31010203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 31110203SAli.Saidi@ARM.com int index); 3129455Smitch.hayenga+gem5@gmail.com 3139112Smarc.orr@gmail.com/// Futex system call 3149112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 3159112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 3169112Smarc.orr@gmail.comtemplate <class OS> 3179112Smarc.orr@gmail.comSyscallReturn 3189112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3199112Smarc.orr@gmail.com ThreadContext *tc) 3209112Smarc.orr@gmail.com{ 3219112Smarc.orr@gmail.com int index_uaddr = 0; 3229112Smarc.orr@gmail.com int index_op = 1; 3239112Smarc.orr@gmail.com int index_val = 2; 3249112Smarc.orr@gmail.com int index_timeout = 3; 3259112Smarc.orr@gmail.com 3269112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3279112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3289112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3299112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3309112Smarc.orr@gmail.com 3319112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3329112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3339112Smarc.orr@gmail.com 3349112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3359112Smarc.orr@gmail.com uaddr, op, val); 3369112Smarc.orr@gmail.com 3379238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3389112Smarc.orr@gmail.com 3399112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3409112Smarc.orr@gmail.com if (timeout != 0) { 3419112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3429112Smarc.orr@gmail.com "we'll wait indefinitely"); 3439112Smarc.orr@gmail.com } 3449112Smarc.orr@gmail.com 3459112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3469112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3479112Smarc.orr@gmail.com int mem_val = *((int *)buf); 34811367Sandreas.hansson@arm.com delete[] buf; 3499112Smarc.orr@gmail.com 35011321Ssteve.reinhardt@amd.com if (val != mem_val) { 3519112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3529112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3539112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3549112Smarc.orr@gmail.com } 3559112Smarc.orr@gmail.com 3569112Smarc.orr@gmail.com // Queue the thread context 3579112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3589112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3599112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3609112Smarc.orr@gmail.com } else { 3619112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3629112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3639112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3649112Smarc.orr@gmail.com } 3659112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3669112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3679112Smarc.orr@gmail.com "thread context\n"); 3689112Smarc.orr@gmail.com tc->suspend(); 3699112Smarc.orr@gmail.com return 0; 3709112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3719112Smarc.orr@gmail.com int wokenUp = 0; 3729112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3739112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3749112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3759112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3769112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3779112Smarc.orr@gmail.com tcWaitList->pop_front(); 3789112Smarc.orr@gmail.com wokenUp++; 3799112Smarc.orr@gmail.com } 38011321Ssteve.reinhardt@amd.com if (tcWaitList->empty()) { 3819112Smarc.orr@gmail.com futex_map.erase(uaddr); 3829112Smarc.orr@gmail.com delete tcWaitList; 3839112Smarc.orr@gmail.com } 3849112Smarc.orr@gmail.com } 3859112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3869112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3879112Smarc.orr@gmail.com return wokenUp; 3889112Smarc.orr@gmail.com } else { 3899238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3909112Smarc.orr@gmail.com return 0; 3919112Smarc.orr@gmail.com } 3929112Smarc.orr@gmail.com 3939112Smarc.orr@gmail.com} 3949112Smarc.orr@gmail.com 3952238SN/A 3962238SN/A/// Pseudo Funcs - These functions use a different return convension, 3972238SN/A/// returning a second value in a register other than the normal return register 3982238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3993114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 4002238SN/A 4012238SN/A/// Target getpidPseudo() handler. 4022238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 4033114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4042238SN/A 4052238SN/A/// Target getuidPseudo() handler. 4062238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 4073114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4082238SN/A 4092238SN/A/// Target getgidPseudo() handler. 4102238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 4113114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 4122238SN/A 4132238SN/A 4141354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 4151354SN/Aconst int one_million = 1000000; 41610796Sbrandon.potter@amd.com/// A readable name for 1,000,000,000, for converting nanoseconds to seconds. 41710796Sbrandon.potter@amd.comconst int one_billion = 1000000000; 4181354SN/A 4191354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 4201354SN/A/// by my reckoning. We want to keep this a constant (not use the 4211354SN/A/// real-world time) to keep simulations repeatable. 4221354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4231354SN/A 4241354SN/A/// Helper function to convert current elapsed time to seconds and 4251354SN/A/// microseconds. 4261354SN/Atemplate <class T1, class T2> 4271354SN/Avoid 42810796Sbrandon.potter@amd.comgetElapsedTimeMicro(T1 &sec, T2 &usec) 4291354SN/A{ 43010796Sbrandon.potter@amd.com uint64_t elapsed_usecs = curTick() / SimClock::Int::us; 4311354SN/A sec = elapsed_usecs / one_million; 4321354SN/A usec = elapsed_usecs % one_million; 4331354SN/A} 4341354SN/A 43510796Sbrandon.potter@amd.com/// Helper function to convert current elapsed time to seconds and 43610796Sbrandon.potter@amd.com/// nanoseconds. 43710796Sbrandon.potter@amd.comtemplate <class T1, class T2> 43810796Sbrandon.potter@amd.comvoid 43910796Sbrandon.potter@amd.comgetElapsedTimeNano(T1 &sec, T2 &nsec) 44010796Sbrandon.potter@amd.com{ 44110796Sbrandon.potter@amd.com uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns; 44210796Sbrandon.potter@amd.com sec = elapsed_nsecs / one_billion; 44310796Sbrandon.potter@amd.com nsec = elapsed_nsecs % one_billion; 44410796Sbrandon.potter@amd.com} 44510796Sbrandon.potter@amd.com 446360SN/A////////////////////////////////////////////////////////////////////// 447360SN/A// 448360SN/A// The following emulation functions are generic, but need to be 449360SN/A// templated to account for differences in types, constants, etc. 450360SN/A// 451360SN/A////////////////////////////////////////////////////////////////////// 452360SN/A 4533113Sgblack@eecs.umich.edu#if NO_STAT64 4543113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4553113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4563113Sgblack@eecs.umich.edu#else 4573113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4583113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4593113Sgblack@eecs.umich.edu#endif 4603113Sgblack@eecs.umich.edu 4613113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4623113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4633113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4643113Sgblack@eecs.umich.edu 4653113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4663113Sgblack@eecs.umich.edustatic void 4673113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4683113Sgblack@eecs.umich.edu{ 4694189Sgblack@eecs.umich.edu using namespace TheISA; 4704189Sgblack@eecs.umich.edu 4713113Sgblack@eecs.umich.edu if (fakeTTY) 4723113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4733113Sgblack@eecs.umich.edu else 4743113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4758737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4763113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4778737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4783277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4795515SMichael.Adler@intel.com if (fakeTTY) { 4805515SMichael.Adler@intel.com // Claim to be a character device 4815515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4825515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4835515SMichael.Adler@intel.com } 4848737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4853277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4868737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4873277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4888737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4893277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4908737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4913113Sgblack@eecs.umich.edu if (fakeTTY) 4923113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4933113Sgblack@eecs.umich.edu else 4943113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4958737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4963113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4978737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4983114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4998737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 5003114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 5018737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 5023114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 5038737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 5044061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 5054061Sgblack@eecs.umich.edu // consistently across different hosts. 5064061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 5078737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 5083113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 5098737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 5103113Sgblack@eecs.umich.edu} 5113113Sgblack@eecs.umich.edu 5123113Sgblack@eecs.umich.edu// Same for stat64 5133113Sgblack@eecs.umich.edu 5143113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 5153113Sgblack@eecs.umich.edustatic void 5163113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 5173113Sgblack@eecs.umich.edu{ 5184189Sgblack@eecs.umich.edu using namespace TheISA; 5194189Sgblack@eecs.umich.edu 5203113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 5213113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 5223113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 5238737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 5243113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 5258737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 5263113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 5278737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 5283113Sgblack@eecs.umich.edu#else 5293113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 5303113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 5313113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5323113Sgblack@eecs.umich.edu#endif 5333113Sgblack@eecs.umich.edu} 5343113Sgblack@eecs.umich.edu 5353113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5363113Sgblack@eecs.umich.edutemplate<class OS> 5373113Sgblack@eecs.umich.edustatic void 5388852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5393113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5403113Sgblack@eecs.umich.edu{ 5413113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5423113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5433113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5443113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5453113Sgblack@eecs.umich.edu} 5463113Sgblack@eecs.umich.edu 5473113Sgblack@eecs.umich.edutemplate<class OS> 5483113Sgblack@eecs.umich.edustatic void 5498852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5503113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5513113Sgblack@eecs.umich.edu{ 5523113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5533113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5546686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5553113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5563113Sgblack@eecs.umich.edu} 5573113Sgblack@eecs.umich.edu 558378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 559378SN/A/// only to find out if their stdout is a tty, to determine whether to 5609141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5619141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 562360SN/Atemplate <class OS> 5631450SN/ASyscallReturn 5643114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5652680Sktlim@umich.edu ThreadContext *tc) 566360SN/A{ 5676701Sgblack@eecs.umich.edu int index = 0; 56810930Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 5696701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 570360SN/A 57110930Sbrandon.potter@amd.com DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req); 572360SN/A 57310932Sbrandon.potter@amd.com FDEntry *fde = process->getFDEntry(tgt_fd); 57410496Ssteve.reinhardt@amd.com 57510930Sbrandon.potter@amd.com if (fde == NULL) { 576360SN/A // doesn't map to any simulator fd: not a valid target fd 5771458SN/A return -EBADF; 578360SN/A } 579360SN/A 58010930Sbrandon.potter@amd.com if (fde->driver != NULL) { 58110930Sbrandon.potter@amd.com return fde->driver->ioctl(process, tc, req); 58210496Ssteve.reinhardt@amd.com } 58310496Ssteve.reinhardt@amd.com 5849141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 5851458SN/A return -ENOTTY; 5869141Smarc.orr@gmail.com } 587360SN/A 5889141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 58910930Sbrandon.potter@amd.com tgt_fd, req, tc->pcState()); 5909141Smarc.orr@gmail.com return -ENOTTY; 591360SN/A} 592360SN/A 593360SN/Atemplate <class OS> 59410027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 5953114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 59610027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 597360SN/A{ 598360SN/A std::string path; 599360SN/A 6008852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 6016701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 6021458SN/A return -EFAULT; 603360SN/A 6046701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 6056701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 606360SN/A int hostFlags = 0; 607360SN/A 608360SN/A // translate open flags 609360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 610360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 611360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 612360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 613360SN/A } 614360SN/A } 615360SN/A 616360SN/A // any target flags left? 617360SN/A if (tgtFlags != 0) 6181706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 619360SN/A 620360SN/A#ifdef __CYGWIN32__ 621360SN/A hostFlags |= O_BINARY; 622360SN/A#endif 623360SN/A 6243669Sbinkertn@umich.edu // Adjust path for current working directory 6253669Sbinkertn@umich.edu path = process->fullPath(path); 6263669Sbinkertn@umich.edu 6271706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 6281706SN/A 62910496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 63010496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 63110496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 63210496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 63310496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 63410496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 63510496Ssteve.reinhardt@amd.com return -ENOENT; 63610496Ssteve.reinhardt@amd.com } 63710496Ssteve.reinhardt@amd.com 63810496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 63910496Ssteve.reinhardt@amd.com if (drv != NULL) { 64010496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 64110496Ssteve.reinhardt@amd.com // process if necessary. 64210496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 64310496Ssteve.reinhardt@amd.com } 64410496Ssteve.reinhardt@amd.com 64510496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 64610496Ssteve.reinhardt@amd.com // /dev/zero 64710496Ssteve.reinhardt@amd.com } 64810496Ssteve.reinhardt@amd.com 6495795Ssaidi@eecs.umich.edu int fd; 6509143Ssteve.reinhardt@amd.com int local_errno; 6519142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6529142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6539143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6545795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6559143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6565795Ssaidi@eecs.umich.edu } else { 6575795Ssaidi@eecs.umich.edu // open the file 6585795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6599143Ssteve.reinhardt@amd.com local_errno = errno; 6605795Ssaidi@eecs.umich.edu } 661360SN/A 6629143Ssteve.reinhardt@amd.com if (fd == -1) 6639143Ssteve.reinhardt@amd.com return -local_errno; 6649143Ssteve.reinhardt@amd.com 66510932Sbrandon.potter@amd.com return process->allocFD(fd, path.c_str(), hostFlags, mode, false); 666360SN/A} 667360SN/A 66810027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 66910027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 67010027SChris.Adeniyi-Jones@arm.comSyscallReturn 67110027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67210027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 67310027SChris.Adeniyi-Jones@arm.com{ 67410027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 67510027SChris.Adeniyi-Jones@arm.com} 67610027SChris.Adeniyi-Jones@arm.com 67710027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 67810027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 67910027SChris.Adeniyi-Jones@arm.comSyscallReturn 68010027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 68110027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 68210027SChris.Adeniyi-Jones@arm.com{ 68310027SChris.Adeniyi-Jones@arm.com int index = 0; 68410027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 68510027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 68610027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 68710027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 68810027SChris.Adeniyi-Jones@arm.com} 68910027SChris.Adeniyi-Jones@arm.com 69010633Smichaelupton@gmail.com/// Target unlinkat() handler. 69110633Smichaelupton@gmail.comtemplate <class OS> 69210633Smichaelupton@gmail.comSyscallReturn 69310633Smichaelupton@gmail.comunlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 69410633Smichaelupton@gmail.com ThreadContext *tc) 69510633Smichaelupton@gmail.com{ 69610633Smichaelupton@gmail.com int index = 0; 69710633Smichaelupton@gmail.com int dirfd = process->getSyscallArg(tc, index); 69810633Smichaelupton@gmail.com if (dirfd != OS::TGT_AT_FDCWD) 69910633Smichaelupton@gmail.com warn("unlinkat: first argument not AT_FDCWD; unlikely to work"); 70010633Smichaelupton@gmail.com 70110633Smichaelupton@gmail.com return unlinkHelper(desc, callnum, process, tc, 1); 70210633Smichaelupton@gmail.com} 70310633Smichaelupton@gmail.com 70410203SAli.Saidi@ARM.com/// Target facessat() handler 70510203SAli.Saidi@ARM.comtemplate <class OS> 70610203SAli.Saidi@ARM.comSyscallReturn 70710203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 70810203SAli.Saidi@ARM.com ThreadContext *tc) 70910203SAli.Saidi@ARM.com{ 71010203SAli.Saidi@ARM.com int index = 0; 71110203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 71210203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 71310203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 71410203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 71510203SAli.Saidi@ARM.com} 71610203SAli.Saidi@ARM.com 71710203SAli.Saidi@ARM.com/// Target readlinkat() handler 71810203SAli.Saidi@ARM.comtemplate <class OS> 71910203SAli.Saidi@ARM.comSyscallReturn 72010203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 72110203SAli.Saidi@ARM.com ThreadContext *tc) 72210203SAli.Saidi@ARM.com{ 72310203SAli.Saidi@ARM.com int index = 0; 72410203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 72510203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 72610203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 72710203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 72810203SAli.Saidi@ARM.com} 72910203SAli.Saidi@ARM.com 73010850SGiacomo.Gabrielli@arm.com/// Target renameat() handler. 73110850SGiacomo.Gabrielli@arm.comtemplate <class OS> 73210850SGiacomo.Gabrielli@arm.comSyscallReturn 73310850SGiacomo.Gabrielli@arm.comrenameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 73410850SGiacomo.Gabrielli@arm.com ThreadContext *tc) 73510850SGiacomo.Gabrielli@arm.com{ 73610850SGiacomo.Gabrielli@arm.com int index = 0; 73710850SGiacomo.Gabrielli@arm.com 73810850SGiacomo.Gabrielli@arm.com int olddirfd = process->getSyscallArg(tc, index); 73910850SGiacomo.Gabrielli@arm.com if (olddirfd != OS::TGT_AT_FDCWD) 74010850SGiacomo.Gabrielli@arm.com warn("renameat: first argument not AT_FDCWD; unlikely to work"); 74110850SGiacomo.Gabrielli@arm.com 74210850SGiacomo.Gabrielli@arm.com std::string old_name; 74310850SGiacomo.Gabrielli@arm.com 74410850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(old_name, 74510850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 74610850SGiacomo.Gabrielli@arm.com return -EFAULT; 74710850SGiacomo.Gabrielli@arm.com 74810850SGiacomo.Gabrielli@arm.com int newdirfd = process->getSyscallArg(tc, index); 74910850SGiacomo.Gabrielli@arm.com if (newdirfd != OS::TGT_AT_FDCWD) 75010850SGiacomo.Gabrielli@arm.com warn("renameat: third argument not AT_FDCWD; unlikely to work"); 75110850SGiacomo.Gabrielli@arm.com 75210850SGiacomo.Gabrielli@arm.com std::string new_name; 75310850SGiacomo.Gabrielli@arm.com 75410850SGiacomo.Gabrielli@arm.com if (!tc->getMemProxy().tryReadString(new_name, 75510850SGiacomo.Gabrielli@arm.com process->getSyscallArg(tc, index))) 75610850SGiacomo.Gabrielli@arm.com return -EFAULT; 75710850SGiacomo.Gabrielli@arm.com 75810850SGiacomo.Gabrielli@arm.com // Adjust path for current working directory 75910850SGiacomo.Gabrielli@arm.com old_name = process->fullPath(old_name); 76010850SGiacomo.Gabrielli@arm.com new_name = process->fullPath(new_name); 76110850SGiacomo.Gabrielli@arm.com 76210850SGiacomo.Gabrielli@arm.com int result = rename(old_name.c_str(), new_name.c_str()); 76310850SGiacomo.Gabrielli@arm.com return (result == -1) ? -errno : result; 76410850SGiacomo.Gabrielli@arm.com} 76510850SGiacomo.Gabrielli@arm.com 7666640Svince@csl.cornell.edu/// Target sysinfo() handler. 7676640Svince@csl.cornell.edutemplate <class OS> 7686640Svince@csl.cornell.eduSyscallReturn 7696640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7706640Svince@csl.cornell.edu ThreadContext *tc) 7716640Svince@csl.cornell.edu{ 7726640Svince@csl.cornell.edu 7736701Sgblack@eecs.umich.edu int index = 0; 7746701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 77510793Sbrandon.potter@amd.com sysinfo(process->getSyscallArg(tc, index)); 7766640Svince@csl.cornell.edu 7776701Sgblack@eecs.umich.edu sysinfo->uptime=seconds_since_epoch; 7786701Sgblack@eecs.umich.edu sysinfo->totalram=process->system->memSize(); 7796640Svince@csl.cornell.edu 7808706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 7816640Svince@csl.cornell.edu 7826701Sgblack@eecs.umich.edu return 0; 7836640Svince@csl.cornell.edu} 784360SN/A 7851999SN/A/// Target chmod() handler. 7861999SN/Atemplate <class OS> 7871999SN/ASyscallReturn 7883114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7892680Sktlim@umich.edu ThreadContext *tc) 7901999SN/A{ 7911999SN/A std::string path; 7921999SN/A 7936701Sgblack@eecs.umich.edu int index = 0; 7948852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7956701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7961999SN/A return -EFAULT; 7976701Sgblack@eecs.umich.edu } 7981999SN/A 7996701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 8001999SN/A mode_t hostMode = 0; 8011999SN/A 8021999SN/A // XXX translate mode flags via OS::something??? 8031999SN/A hostMode = mode; 8041999SN/A 8053669Sbinkertn@umich.edu // Adjust path for current working directory 8063669Sbinkertn@umich.edu path = process->fullPath(path); 8073669Sbinkertn@umich.edu 8081999SN/A // do the chmod 8091999SN/A int result = chmod(path.c_str(), hostMode); 8101999SN/A if (result < 0) 8112218SN/A return -errno; 8121999SN/A 8131999SN/A return 0; 8141999SN/A} 8151999SN/A 8161999SN/A 8171999SN/A/// Target fchmod() handler. 8181999SN/Atemplate <class OS> 8191999SN/ASyscallReturn 8203114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8212680Sktlim@umich.edu ThreadContext *tc) 8221999SN/A{ 8236701Sgblack@eecs.umich.edu int index = 0; 82410931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 82510931Sbrandon.potter@amd.com uint32_t mode = process->getSyscallArg(tc, index); 82610931Sbrandon.potter@amd.com 82710932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 82810931Sbrandon.potter@amd.com if (sim_fd < 0) 8291999SN/A return -EBADF; 8301999SN/A 8311999SN/A mode_t hostMode = 0; 8321999SN/A 8331999SN/A // XXX translate mode flags via OS::someting??? 8341999SN/A hostMode = mode; 8351999SN/A 8361999SN/A // do the fchmod 83710931Sbrandon.potter@amd.com int result = fchmod(sim_fd, hostMode); 8381999SN/A if (result < 0) 8392218SN/A return -errno; 8401999SN/A 8411999SN/A return 0; 8421999SN/A} 8431999SN/A 8445877Shsul@eecs.umich.edu/// Target mremap() handler. 8455877Shsul@eecs.umich.edutemplate <class OS> 8465877Shsul@eecs.umich.eduSyscallReturn 8475877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 8485877Shsul@eecs.umich.edu{ 8496701Sgblack@eecs.umich.edu int index = 0; 8506701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 8516701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 8526701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 8536701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 85410027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 85510027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 85610027SChris.Adeniyi-Jones@arm.com 85710027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 85810027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 8595877Shsul@eecs.umich.edu 86010318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 86110318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 8625877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 8635877Shsul@eecs.umich.edu return -EINVAL; 8645877Shsul@eecs.umich.edu } 8655877Shsul@eecs.umich.edu 86610486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 86710486Stjablin@gmail.com 8685877Shsul@eecs.umich.edu if (new_length > old_length) { 86910027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 87010027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 8715877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 8728601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 8735877Shsul@eecs.umich.edu process->mmap_end += diff; 8745877Shsul@eecs.umich.edu return start; 8755877Shsul@eecs.umich.edu } else { 87610027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 8775877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 8785877Shsul@eecs.umich.edu return -ENOMEM; 8795877Shsul@eecs.umich.edu } else { 88010027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 88110027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 88210027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 88310027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 88410027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 88510027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8865877Shsul@eecs.umich.edu // add on the remaining unallocated pages 88710027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 88810027SChris.Adeniyi-Jones@arm.com new_length - old_length, 88910027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 89010027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 89110027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 89210027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 89310027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 89410027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 89510027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 89610027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 89710027SChris.Adeniyi-Jones@arm.com } 89810027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 89910027SChris.Adeniyi-Jones@arm.com return new_start; 9005877Shsul@eecs.umich.edu } 9015877Shsul@eecs.umich.edu } 9025877Shsul@eecs.umich.edu } else { 90310027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 90410027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 9058601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 90610027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 9075877Shsul@eecs.umich.edu } 9085877Shsul@eecs.umich.edu} 9091999SN/A 910378SN/A/// Target stat() handler. 911360SN/Atemplate <class OS> 9121450SN/ASyscallReturn 9133114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9142680Sktlim@umich.edu ThreadContext *tc) 915360SN/A{ 916360SN/A std::string path; 917360SN/A 9186701Sgblack@eecs.umich.edu int index = 0; 9198852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9206701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9216701Sgblack@eecs.umich.edu return -EFAULT; 9226701Sgblack@eecs.umich.edu } 9236701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 924360SN/A 9253669Sbinkertn@umich.edu // Adjust path for current working directory 9263669Sbinkertn@umich.edu path = process->fullPath(path); 9273669Sbinkertn@umich.edu 928360SN/A struct stat hostBuf; 929360SN/A int result = stat(path.c_str(), &hostBuf); 930360SN/A 931360SN/A if (result < 0) 9322218SN/A return -errno; 933360SN/A 9348706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 935360SN/A 9361458SN/A return 0; 937360SN/A} 938360SN/A 939360SN/A 9405074Ssaidi@eecs.umich.edu/// Target stat64() handler. 9415074Ssaidi@eecs.umich.edutemplate <class OS> 9425074Ssaidi@eecs.umich.eduSyscallReturn 9435074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9445074Ssaidi@eecs.umich.edu ThreadContext *tc) 9455074Ssaidi@eecs.umich.edu{ 9465074Ssaidi@eecs.umich.edu std::string path; 9475074Ssaidi@eecs.umich.edu 9486701Sgblack@eecs.umich.edu int index = 0; 9498852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9506701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 9515074Ssaidi@eecs.umich.edu return -EFAULT; 9526701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9535074Ssaidi@eecs.umich.edu 9545074Ssaidi@eecs.umich.edu // Adjust path for current working directory 9555074Ssaidi@eecs.umich.edu path = process->fullPath(path); 9565074Ssaidi@eecs.umich.edu 9575208Ssaidi@eecs.umich.edu#if NO_STAT64 9585208Ssaidi@eecs.umich.edu struct stat hostBuf; 9595208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 9605208Ssaidi@eecs.umich.edu#else 9615074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 9625074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 9635208Ssaidi@eecs.umich.edu#endif 9645074Ssaidi@eecs.umich.edu 9655074Ssaidi@eecs.umich.edu if (result < 0) 9665074Ssaidi@eecs.umich.edu return -errno; 9675074Ssaidi@eecs.umich.edu 9688706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 9695074Ssaidi@eecs.umich.edu 9705074Ssaidi@eecs.umich.edu return 0; 9715074Ssaidi@eecs.umich.edu} 9725074Ssaidi@eecs.umich.edu 9735074Ssaidi@eecs.umich.edu 97410027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 97510027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 97610027SChris.Adeniyi-Jones@arm.comSyscallReturn 97710027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 97810027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 97910027SChris.Adeniyi-Jones@arm.com{ 98010027SChris.Adeniyi-Jones@arm.com int index = 0; 98110027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 98210027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 98310793Sbrandon.potter@amd.com warn("fstatat64: first argument not AT_FDCWD; unlikely to work"); 98410027SChris.Adeniyi-Jones@arm.com 98510027SChris.Adeniyi-Jones@arm.com std::string path; 98610027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 98710027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 98810027SChris.Adeniyi-Jones@arm.com return -EFAULT; 98910027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 99010027SChris.Adeniyi-Jones@arm.com 99110027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 99210027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 99310027SChris.Adeniyi-Jones@arm.com 99410027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 99510027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 99610027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 99710027SChris.Adeniyi-Jones@arm.com#else 99810027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 99910027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 100010027SChris.Adeniyi-Jones@arm.com#endif 100110027SChris.Adeniyi-Jones@arm.com 100210027SChris.Adeniyi-Jones@arm.com if (result < 0) 100310027SChris.Adeniyi-Jones@arm.com return -errno; 100410027SChris.Adeniyi-Jones@arm.com 100510027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 100610027SChris.Adeniyi-Jones@arm.com 100710027SChris.Adeniyi-Jones@arm.com return 0; 100810027SChris.Adeniyi-Jones@arm.com} 100910027SChris.Adeniyi-Jones@arm.com 101010027SChris.Adeniyi-Jones@arm.com 10111999SN/A/// Target fstat64() handler. 10121999SN/Atemplate <class OS> 10131999SN/ASyscallReturn 10143114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10152680Sktlim@umich.edu ThreadContext *tc) 10161999SN/A{ 10176701Sgblack@eecs.umich.edu int index = 0; 101810931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 10196701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 102010931Sbrandon.potter@amd.com 102110932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 102210931Sbrandon.potter@amd.com if (sim_fd < 0) 10231999SN/A return -EBADF; 10241999SN/A 10252764Sstever@eecs.umich.edu#if NO_STAT64 10262064SN/A struct stat hostBuf; 102710931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 10282064SN/A#else 10292064SN/A struct stat64 hostBuf; 103010931Sbrandon.potter@amd.com int result = fstat64(sim_fd, &hostBuf); 10312064SN/A#endif 10321999SN/A 10331999SN/A if (result < 0) 10342218SN/A return -errno; 10351999SN/A 103610931Sbrandon.potter@amd.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 10371999SN/A 10381999SN/A return 0; 10391999SN/A} 10401999SN/A 10411999SN/A 1042378SN/A/// Target lstat() handler. 1043360SN/Atemplate <class OS> 10441450SN/ASyscallReturn 10453114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10462680Sktlim@umich.edu ThreadContext *tc) 1047360SN/A{ 1048360SN/A std::string path; 1049360SN/A 10506701Sgblack@eecs.umich.edu int index = 0; 10518852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10526701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10536701Sgblack@eecs.umich.edu return -EFAULT; 10546701Sgblack@eecs.umich.edu } 10556701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1056360SN/A 10573669Sbinkertn@umich.edu // Adjust path for current working directory 10583669Sbinkertn@umich.edu path = process->fullPath(path); 10593669Sbinkertn@umich.edu 1060360SN/A struct stat hostBuf; 1061360SN/A int result = lstat(path.c_str(), &hostBuf); 1062360SN/A 1063360SN/A if (result < 0) 10641458SN/A return -errno; 1065360SN/A 10668706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 1067360SN/A 10681458SN/A return 0; 1069360SN/A} 1070360SN/A 10711999SN/A/// Target lstat64() handler. 10721999SN/Atemplate <class OS> 10731999SN/ASyscallReturn 10743114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 10752680Sktlim@umich.edu ThreadContext *tc) 10761999SN/A{ 10771999SN/A std::string path; 10781999SN/A 10796701Sgblack@eecs.umich.edu int index = 0; 10808852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10816701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10826701Sgblack@eecs.umich.edu return -EFAULT; 10836701Sgblack@eecs.umich.edu } 10846701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10851999SN/A 10863669Sbinkertn@umich.edu // Adjust path for current working directory 10873669Sbinkertn@umich.edu path = process->fullPath(path); 10883669Sbinkertn@umich.edu 10892764Sstever@eecs.umich.edu#if NO_STAT64 10902064SN/A struct stat hostBuf; 10912064SN/A int result = lstat(path.c_str(), &hostBuf); 10922064SN/A#else 10931999SN/A struct stat64 hostBuf; 10941999SN/A int result = lstat64(path.c_str(), &hostBuf); 10952064SN/A#endif 10961999SN/A 10971999SN/A if (result < 0) 10981999SN/A return -errno; 10991999SN/A 11008706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 11011999SN/A 11021999SN/A return 0; 11031999SN/A} 11041999SN/A 1105378SN/A/// Target fstat() handler. 1106360SN/Atemplate <class OS> 11071450SN/ASyscallReturn 11083114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11092680Sktlim@umich.edu ThreadContext *tc) 1110360SN/A{ 11116701Sgblack@eecs.umich.edu int index = 0; 111210931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11136701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1114360SN/A 111511380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd); 1116360SN/A 111710932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 111810931Sbrandon.potter@amd.com if (sim_fd < 0) 11191458SN/A return -EBADF; 1120360SN/A 1121360SN/A struct stat hostBuf; 112210931Sbrandon.potter@amd.com int result = fstat(sim_fd, &hostBuf); 1123360SN/A 1124360SN/A if (result < 0) 11251458SN/A return -errno; 1126360SN/A 112710931Sbrandon.potter@amd.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1)); 11282021SN/A 11291458SN/A return 0; 1130360SN/A} 1131360SN/A 1132360SN/A 11331706SN/A/// Target statfs() handler. 11341706SN/Atemplate <class OS> 11351706SN/ASyscallReturn 11363114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11372680Sktlim@umich.edu ThreadContext *tc) 11381706SN/A{ 11391706SN/A std::string path; 11401706SN/A 11416701Sgblack@eecs.umich.edu int index = 0; 11428852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 11436701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 11446701Sgblack@eecs.umich.edu return -EFAULT; 11456701Sgblack@eecs.umich.edu } 11466701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11471706SN/A 11483669Sbinkertn@umich.edu // Adjust path for current working directory 11493669Sbinkertn@umich.edu path = process->fullPath(path); 11503669Sbinkertn@umich.edu 11511706SN/A struct statfs hostBuf; 11521706SN/A int result = statfs(path.c_str(), &hostBuf); 11531706SN/A 11541706SN/A if (result < 0) 11552218SN/A return -errno; 11561706SN/A 11578706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11581706SN/A 11591706SN/A return 0; 11601706SN/A} 11611706SN/A 11621706SN/A 11631706SN/A/// Target fstatfs() handler. 11641706SN/Atemplate <class OS> 11651706SN/ASyscallReturn 11663114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11672680Sktlim@umich.edu ThreadContext *tc) 11681706SN/A{ 11696701Sgblack@eecs.umich.edu int index = 0; 117010931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 11716701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 11721706SN/A 117310932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 117410931Sbrandon.potter@amd.com if (sim_fd < 0) 11751706SN/A return -EBADF; 11761706SN/A 11771706SN/A struct statfs hostBuf; 117810931Sbrandon.potter@amd.com int result = fstatfs(sim_fd, &hostBuf); 11791706SN/A 11801706SN/A if (result < 0) 11812218SN/A return -errno; 11821706SN/A 11838706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11841706SN/A 11851706SN/A return 0; 11861706SN/A} 11871706SN/A 11881706SN/A 11891999SN/A/// Target writev() handler. 11901999SN/Atemplate <class OS> 11911999SN/ASyscallReturn 11923114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11932680Sktlim@umich.edu ThreadContext *tc) 11941999SN/A{ 11956701Sgblack@eecs.umich.edu int index = 0; 119610931Sbrandon.potter@amd.com int tgt_fd = process->getSyscallArg(tc, index); 119710931Sbrandon.potter@amd.com 119810932Sbrandon.potter@amd.com int sim_fd = process->getSimFD(tgt_fd); 119910931Sbrandon.potter@amd.com if (sim_fd < 0) 12001999SN/A return -EBADF; 12011999SN/A 12028852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 12036701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 12046701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 12051999SN/A struct iovec hiov[count]; 12066227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 12071999SN/A typename OS::tgt_iovec tiov; 12082461SN/A 12098852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 12108852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 12118737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 12121999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 12138852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 12148852Sandreas.hansson@arm.com hiov[i].iov_len); 12151999SN/A } 12161999SN/A 121710931Sbrandon.potter@amd.com int result = writev(sim_fd, hiov, count); 12181999SN/A 12196227Snate@binkert.org for (size_t i = 0; i < count; ++i) 12201999SN/A delete [] (char *)hiov[i].iov_base; 12211999SN/A 12221999SN/A if (result < 0) 12232218SN/A return -errno; 12241999SN/A 122510629Sjthestness@gmail.com return result; 12261999SN/A} 12271999SN/A 122811385Sbrandon.potter@amd.com/// Real mmap handler. 1229360SN/Atemplate <class OS> 12301450SN/ASyscallReturn 123111385Sbrandon.potter@amd.commmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc, 123211385Sbrandon.potter@amd.com bool is_mmap2) 1233360SN/A{ 12346701Sgblack@eecs.umich.edu int index = 0; 12356701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 12366701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 123711383Sbrandon.potter@amd.com int prot = p->getSyscallArg(tc, index); 123811383Sbrandon.potter@amd.com int tgt_flags = p->getSyscallArg(tc, index); 12398324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 124010486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1241360SN/A 124211385Sbrandon.potter@amd.com if (is_mmap2) 124311385Sbrandon.potter@amd.com offset *= TheISA::PageBytes; 12449008Sgblack@eecs.umich.edu 124511383Sbrandon.potter@amd.com if (start & (TheISA::PageBytes - 1) || 124611383Sbrandon.potter@amd.com offset & (TheISA::PageBytes - 1) || 124711383Sbrandon.potter@amd.com (tgt_flags & OS::TGT_MAP_PRIVATE && 124811383Sbrandon.potter@amd.com tgt_flags & OS::TGT_MAP_SHARED) || 124911383Sbrandon.potter@amd.com (!(tgt_flags & OS::TGT_MAP_PRIVATE) && 125011383Sbrandon.potter@amd.com !(tgt_flags & OS::TGT_MAP_SHARED)) || 125111383Sbrandon.potter@amd.com !length) { 125211383Sbrandon.potter@amd.com return -EINVAL; 125311383Sbrandon.potter@amd.com } 12548324Ssteve.reinhardt@amd.com 125511383Sbrandon.potter@amd.com if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) { 125611383Sbrandon.potter@amd.com // With shared mmaps, there are two cases to consider: 125711383Sbrandon.potter@amd.com // 1) anonymous: writes should modify the mapping and this should be 125811383Sbrandon.potter@amd.com // visible to observers who share the mapping. Currently, it's 125911383Sbrandon.potter@amd.com // difficult to update the shared mapping because there's no 126011383Sbrandon.potter@amd.com // structure which maintains information about the which virtual 126111383Sbrandon.potter@amd.com // memory areas are shared. If that structure existed, it would be 126211383Sbrandon.potter@amd.com // possible to make the translations point to the same frames. 126311383Sbrandon.potter@amd.com // 2) file-backed: writes should modify the mapping and the file 126411383Sbrandon.potter@amd.com // which is backed by the mapping. The shared mapping problem is the 126511383Sbrandon.potter@amd.com // same as what was mentioned about the anonymous mappings. For 126611383Sbrandon.potter@amd.com // file-backed mappings, the writes to the file are difficult 126711383Sbrandon.potter@amd.com // because it requires syncing what the mapping holds with the file 126811383Sbrandon.potter@amd.com // that resides on the host system. So, any write on a real system 126911383Sbrandon.potter@amd.com // would cause the change to be propagated to the file mapping at 127011383Sbrandon.potter@amd.com // some point in the future (the inode is tracked along with the 127111383Sbrandon.potter@amd.com // mapping). This isn't guaranteed to always happen, but it usually 127211383Sbrandon.potter@amd.com // works well enough. The guarantee is provided by the msync system 127311383Sbrandon.potter@amd.com // call. We could force the change through with shared mappings with 127411383Sbrandon.potter@amd.com // a call to msync, but that again would require more information 127511383Sbrandon.potter@amd.com // than we currently maintain. 127611383Sbrandon.potter@amd.com warn("mmap: writing to shared mmap region is currently " 127711383Sbrandon.potter@amd.com "unsupported. The write succeeds on the target, but it " 127811383Sbrandon.potter@amd.com "will not be propagated to the host or shared mappings"); 12798324Ssteve.reinhardt@amd.com } 12805877Shsul@eecs.umich.edu 128110486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 128210486Stjablin@gmail.com 128311383Sbrandon.potter@amd.com int sim_fd = -1; 128411383Sbrandon.potter@amd.com uint8_t *pmap = nullptr; 128511383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) { 128611383Sbrandon.potter@amd.com sim_fd = p->getSimFD(tgt_fd); 128711383Sbrandon.potter@amd.com if (sim_fd < 0) 128811383Sbrandon.potter@amd.com return -EBADF; 1289360SN/A 129011383Sbrandon.potter@amd.com pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE, 129111383Sbrandon.potter@amd.com sim_fd, offset); 12928600Ssteve.reinhardt@amd.com 129311383Sbrandon.potter@amd.com if (pmap == (decltype(pmap))-1) { 129411383Sbrandon.potter@amd.com warn("mmap: failed to map file into host address space"); 129511383Sbrandon.potter@amd.com return -errno; 12968600Ssteve.reinhardt@amd.com } 12972544SN/A } 12982544SN/A 129911383Sbrandon.potter@amd.com // Extend global mmap region if necessary. Note that we ignore the 130011383Sbrandon.potter@amd.com // start address unless MAP_FIXED is specified. 130111383Sbrandon.potter@amd.com if (!(tgt_flags & OS::TGT_MAP_FIXED)) { 130211386Ssteve.reinhardt@amd.com start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end; 130311386Ssteve.reinhardt@amd.com p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length; 130411383Sbrandon.potter@amd.com } 130511383Sbrandon.potter@amd.com 130611383Sbrandon.potter@amd.com DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n", 130711383Sbrandon.potter@amd.com start, start + length - 1); 130811383Sbrandon.potter@amd.com 130911383Sbrandon.potter@amd.com // We only allow mappings to overwrite existing mappings if 131011383Sbrandon.potter@amd.com // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem 131111383Sbrandon.potter@amd.com // because we ignore the start hint if TGT_MAP_FIXED is not set. 131211383Sbrandon.potter@amd.com int clobber = tgt_flags & OS::TGT_MAP_FIXED; 131311383Sbrandon.potter@amd.com if (clobber) { 131411383Sbrandon.potter@amd.com for (auto tc : p->system->threadContexts) { 131511383Sbrandon.potter@amd.com // If we might be overwriting old mappings, we need to 131611383Sbrandon.potter@amd.com // invalidate potentially stale mappings out of the TLBs. 131711383Sbrandon.potter@amd.com tc->getDTBPtr()->flushAll(); 131811383Sbrandon.potter@amd.com tc->getITBPtr()->flushAll(); 13198600Ssteve.reinhardt@amd.com } 13206672Sgblack@eecs.umich.edu } 13218600Ssteve.reinhardt@amd.com 132211383Sbrandon.potter@amd.com // Allocate physical memory and map it in. If the page table is already 132311383Sbrandon.potter@amd.com // mapped and clobber is not set, the simulator will issue throw a 132411383Sbrandon.potter@amd.com // fatal and bail out of the simulation. 13258601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 13262544SN/A 132711383Sbrandon.potter@amd.com // Transfer content into target address space. 132811383Sbrandon.potter@amd.com SETranslatingPortProxy &tp = tc->getMemProxy(); 132911383Sbrandon.potter@amd.com if (tgt_flags & OS::TGT_MAP_ANONYMOUS) { 133011383Sbrandon.potter@amd.com // In general, we should zero the mapped area for anonymous mappings, 133111383Sbrandon.potter@amd.com // with something like: 133211383Sbrandon.potter@amd.com // tp.memsetBlob(start, 0, length); 133311383Sbrandon.potter@amd.com // However, given that we don't support sparse mappings, and 133411383Sbrandon.potter@amd.com // some applications can map a couple of gigabytes of space 133511383Sbrandon.potter@amd.com // (intending sparse usage), that can get painfully expensive. 133611383Sbrandon.potter@amd.com // Fortunately, since we don't properly implement munmap either, 133711383Sbrandon.potter@amd.com // there's no danger of remapping used memory, so for now all 133811383Sbrandon.potter@amd.com // newly mapped memory should already be zeroed so we can skip it. 133911383Sbrandon.potter@amd.com } else { 134011383Sbrandon.potter@amd.com // It is possible to mmap an area larger than a file, however 134111383Sbrandon.potter@amd.com // accessing unmapped portions the system triggers a "Bus error" 134211383Sbrandon.potter@amd.com // on the host. We must know when to stop copying the file from 134311383Sbrandon.potter@amd.com // the host into the target address space. 134411383Sbrandon.potter@amd.com struct stat file_stat; 134511383Sbrandon.potter@amd.com if (fstat(sim_fd, &file_stat) > 0) 134611383Sbrandon.potter@amd.com fatal("mmap: cannot stat file"); 134711383Sbrandon.potter@amd.com 134811383Sbrandon.potter@amd.com // Copy the portion of the file that is resident. This requires 134911383Sbrandon.potter@amd.com // checking both the mmap size and the filesize that we are 135011383Sbrandon.potter@amd.com // trying to mmap into this space; the mmap size also depends 135111383Sbrandon.potter@amd.com // on the specified offset into the file. 135211383Sbrandon.potter@amd.com uint64_t size = std::min((uint64_t)file_stat.st_size - offset, 135311383Sbrandon.potter@amd.com length); 135411383Sbrandon.potter@amd.com tp.writeBlob(start, pmap, size); 135511383Sbrandon.potter@amd.com 135611383Sbrandon.potter@amd.com // Cleanup the mmap region before exiting this function. 135711383Sbrandon.potter@amd.com munmap(pmap, length); 135811383Sbrandon.potter@amd.com 135911392Sbrandon.potter@amd.com // Maintain the symbol table for dynamic executables. 136011392Sbrandon.potter@amd.com // The loader will call mmap to map the images into its address 136111392Sbrandon.potter@amd.com // space and we intercept that here. We can verify that we are 136211392Sbrandon.potter@amd.com // executing inside the loader by checking the program counter value. 136311392Sbrandon.potter@amd.com // XXX: with multiprogrammed workloads or multi-node configurations, 136411392Sbrandon.potter@amd.com // this will not work since there is a single global symbol table. 136511392Sbrandon.potter@amd.com ObjectFile *interpreter = p->getInterpreter(); 136611392Sbrandon.potter@amd.com if (interpreter) { 136711392Sbrandon.potter@amd.com Addr text_start = interpreter->textBase(); 136811392Sbrandon.potter@amd.com Addr text_end = text_start + interpreter->textSize(); 136911392Sbrandon.potter@amd.com 137011392Sbrandon.potter@amd.com Addr pc = tc->pcState().pc(); 137111392Sbrandon.potter@amd.com 137211392Sbrandon.potter@amd.com if (pc >= text_start && pc < text_end) { 137311392Sbrandon.potter@amd.com FDEntry *fde = p->getFDEntry(tgt_fd); 137411392Sbrandon.potter@amd.com 137511392Sbrandon.potter@amd.com ObjectFile *lib = createObjectFile(fde->filename); 137611392Sbrandon.potter@amd.com 137711392Sbrandon.potter@amd.com if (lib) { 137811392Sbrandon.potter@amd.com lib->loadAllSymbols(debugSymbolTable, 137911392Sbrandon.potter@amd.com lib->textBase(), start); 138011392Sbrandon.potter@amd.com } 138111392Sbrandon.potter@amd.com } 138211392Sbrandon.potter@amd.com } 138311392Sbrandon.potter@amd.com 138411383Sbrandon.potter@amd.com // Note that we do not zero out the remainder of the mapping. This 138511383Sbrandon.potter@amd.com // is done by a real system, but it probably will not affect 138611383Sbrandon.potter@amd.com // execution (hopefully). 138711383Sbrandon.potter@amd.com } 138811383Sbrandon.potter@amd.com 13891458SN/A return start; 1390360SN/A} 1391360SN/A 139211593Santhony.gutierrez@amd.comtemplate <class OS> 139311593Santhony.gutierrez@amd.comSyscallReturn 139411593Santhony.gutierrez@amd.compwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 139511593Santhony.gutierrez@amd.com{ 139611593Santhony.gutierrez@amd.com int index = 0; 139711593Santhony.gutierrez@amd.com int tgt_fd = p->getSyscallArg(tc, index); 139811593Santhony.gutierrez@amd.com Addr bufPtr = p->getSyscallArg(tc, index); 139911593Santhony.gutierrez@amd.com int nbytes = p->getSyscallArg(tc, index); 140011593Santhony.gutierrez@amd.com int offset = p->getSyscallArg(tc, index); 140111593Santhony.gutierrez@amd.com 140211593Santhony.gutierrez@amd.com int sim_fd = p->getSimFD(tgt_fd); 140311593Santhony.gutierrez@amd.com if (sim_fd < 0) 140411593Santhony.gutierrez@amd.com return -EBADF; 140511593Santhony.gutierrez@amd.com 140611593Santhony.gutierrez@amd.com BufferArg bufArg(bufPtr, nbytes); 140711593Santhony.gutierrez@amd.com bufArg.copyIn(tc->getMemProxy()); 140811593Santhony.gutierrez@amd.com 140911593Santhony.gutierrez@amd.com int bytes_written = pwrite64(sim_fd, bufArg.bufferPtr(), nbytes, offset); 141011593Santhony.gutierrez@amd.com 141111593Santhony.gutierrez@amd.com return (bytes_written == -1) ? -errno : bytes_written; 141211593Santhony.gutierrez@amd.com} 141311593Santhony.gutierrez@amd.com 141411385Sbrandon.potter@amd.com/// Target mmap() handler. 141511385Sbrandon.potter@amd.comtemplate <class OS> 141611385Sbrandon.potter@amd.comSyscallReturn 141711385Sbrandon.potter@amd.commmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 141811385Sbrandon.potter@amd.com{ 141911385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, false); 142011385Sbrandon.potter@amd.com} 142111385Sbrandon.potter@amd.com 142211385Sbrandon.potter@amd.com/// Target mmap2() handler. 142311385Sbrandon.potter@amd.comtemplate <class OS> 142411385Sbrandon.potter@amd.comSyscallReturn 142511385Sbrandon.potter@amd.commmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 142611385Sbrandon.potter@amd.com{ 142711385Sbrandon.potter@amd.com return mmapImpl<OS>(desc, num, p, tc, true); 142811385Sbrandon.potter@amd.com} 142911385Sbrandon.potter@amd.com 1430378SN/A/// Target getrlimit() handler. 1431360SN/Atemplate <class OS> 14321450SN/ASyscallReturn 14333114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14342680Sktlim@umich.edu ThreadContext *tc) 1435360SN/A{ 14366701Sgblack@eecs.umich.edu int index = 0; 14376701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 14386701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1439360SN/A 1440360SN/A switch (resource) { 14412064SN/A case OS::TGT_RLIMIT_STACK: 14425877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 14432064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 14448737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14458737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14462064SN/A break; 1447360SN/A 14485877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 14495877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 14505877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 14518737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 14528737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 14535877Shsul@eecs.umich.edu break; 14545877Shsul@eecs.umich.edu 14552064SN/A default: 145610794Sbrandon.potter@amd.com warn("getrlimit: unimplemented resource %d", resource); 145710794Sbrandon.potter@amd.com return -EINVAL; 14582064SN/A break; 1459360SN/A } 1460360SN/A 14618706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 14621458SN/A return 0; 1463360SN/A} 1464360SN/A 146510796Sbrandon.potter@amd.com/// Target clock_gettime() function. 146610796Sbrandon.potter@amd.comtemplate <class OS> 146710796Sbrandon.potter@amd.comSyscallReturn 146810796Sbrandon.potter@amd.comclock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 146910796Sbrandon.potter@amd.com{ 147010796Sbrandon.potter@amd.com int index = 1; 147110796Sbrandon.potter@amd.com //int clk_id = p->getSyscallArg(tc, index); 147210796Sbrandon.potter@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 147310796Sbrandon.potter@amd.com 147410796Sbrandon.potter@amd.com getElapsedTimeNano(tp->tv_sec, tp->tv_nsec); 147510796Sbrandon.potter@amd.com tp->tv_sec += seconds_since_epoch; 147610796Sbrandon.potter@amd.com tp->tv_sec = TheISA::htog(tp->tv_sec); 147710796Sbrandon.potter@amd.com tp->tv_nsec = TheISA::htog(tp->tv_nsec); 147810796Sbrandon.potter@amd.com 147910796Sbrandon.potter@amd.com tp.copyOut(tc->getMemProxy()); 148010796Sbrandon.potter@amd.com 148110796Sbrandon.potter@amd.com return 0; 148210796Sbrandon.potter@amd.com} 148310796Sbrandon.potter@amd.com 148411337SMichael.Lebeane@amd.com/// Target clock_getres() function. 148511337SMichael.Lebeane@amd.comtemplate <class OS> 148611337SMichael.Lebeane@amd.comSyscallReturn 148711337SMichael.Lebeane@amd.comclock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 148811337SMichael.Lebeane@amd.com{ 148911337SMichael.Lebeane@amd.com int index = 1; 149011337SMichael.Lebeane@amd.com TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index)); 149111337SMichael.Lebeane@amd.com 149211337SMichael.Lebeane@amd.com // Set resolution at ns, which is what clock_gettime() returns 149311337SMichael.Lebeane@amd.com tp->tv_sec = 0; 149411337SMichael.Lebeane@amd.com tp->tv_nsec = 1; 149511337SMichael.Lebeane@amd.com 149611337SMichael.Lebeane@amd.com tp.copyOut(tc->getMemProxy()); 149711337SMichael.Lebeane@amd.com 149811337SMichael.Lebeane@amd.com return 0; 149911337SMichael.Lebeane@amd.com} 150011337SMichael.Lebeane@amd.com 1501378SN/A/// Target gettimeofday() handler. 1502360SN/Atemplate <class OS> 15031450SN/ASyscallReturn 15043114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15052680Sktlim@umich.edu ThreadContext *tc) 1506360SN/A{ 15076701Sgblack@eecs.umich.edu int index = 0; 15086701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1509360SN/A 151010796Sbrandon.potter@amd.com getElapsedTimeMicro(tp->tv_sec, tp->tv_usec); 1511360SN/A tp->tv_sec += seconds_since_epoch; 15126109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 15136109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1514360SN/A 15158706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1516360SN/A 15171458SN/A return 0; 1518360SN/A} 1519360SN/A 1520360SN/A 15211999SN/A/// Target utimes() handler. 15221999SN/Atemplate <class OS> 15231999SN/ASyscallReturn 15243114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15252680Sktlim@umich.edu ThreadContext *tc) 15261999SN/A{ 15271999SN/A std::string path; 15281999SN/A 15296701Sgblack@eecs.umich.edu int index = 0; 15308852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 15316701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 15326701Sgblack@eecs.umich.edu return -EFAULT; 15336701Sgblack@eecs.umich.edu } 15341999SN/A 15356701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 15366701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 15378706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 15381999SN/A 15391999SN/A struct timeval hostTimeval[2]; 15401999SN/A for (int i = 0; i < 2; ++i) 15411999SN/A { 15428737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 15438737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 15441999SN/A } 15453669Sbinkertn@umich.edu 15463669Sbinkertn@umich.edu // Adjust path for current working directory 15473669Sbinkertn@umich.edu path = process->fullPath(path); 15483669Sbinkertn@umich.edu 15491999SN/A int result = utimes(path.c_str(), hostTimeval); 15501999SN/A 15511999SN/A if (result < 0) 15521999SN/A return -errno; 15531999SN/A 15541999SN/A return 0; 15551999SN/A} 1556378SN/A/// Target getrusage() function. 1557360SN/Atemplate <class OS> 15581450SN/ASyscallReturn 15593114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 15602680Sktlim@umich.edu ThreadContext *tc) 1561360SN/A{ 15626701Sgblack@eecs.umich.edu int index = 0; 15636701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 15646701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1565360SN/A 15663670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 15673670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1568360SN/A rup->ru_stime.tv_sec = 0; 1569360SN/A rup->ru_stime.tv_usec = 0; 1570360SN/A rup->ru_maxrss = 0; 1571360SN/A rup->ru_ixrss = 0; 1572360SN/A rup->ru_idrss = 0; 1573360SN/A rup->ru_isrss = 0; 1574360SN/A rup->ru_minflt = 0; 1575360SN/A rup->ru_majflt = 0; 1576360SN/A rup->ru_nswap = 0; 1577360SN/A rup->ru_inblock = 0; 1578360SN/A rup->ru_oublock = 0; 1579360SN/A rup->ru_msgsnd = 0; 1580360SN/A rup->ru_msgrcv = 0; 1581360SN/A rup->ru_nsignals = 0; 1582360SN/A rup->ru_nvcsw = 0; 1583360SN/A rup->ru_nivcsw = 0; 1584360SN/A 15853670Sbinkertn@umich.edu switch (who) { 15863670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 158710796Sbrandon.potter@amd.com getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 15888737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 15898737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 15903670Sbinkertn@umich.edu break; 15913670Sbinkertn@umich.edu 15923670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 15933670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 15943670Sbinkertn@umich.edu break; 15953670Sbinkertn@umich.edu 15963670Sbinkertn@umich.edu default: 15973670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 15983670Sbinkertn@umich.edu // plow ahead 15993670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 16003670Sbinkertn@umich.edu who); 16013670Sbinkertn@umich.edu } 16023670Sbinkertn@umich.edu 16038706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1604360SN/A 16051458SN/A return 0; 1606360SN/A} 1607360SN/A 16086683Stjones1@inf.ed.ac.uk/// Target times() function. 16096683Stjones1@inf.ed.ac.uktemplate <class OS> 16106683Stjones1@inf.ed.ac.ukSyscallReturn 16116683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16126683Stjones1@inf.ed.ac.uk ThreadContext *tc) 16136683Stjones1@inf.ed.ac.uk{ 16146701Sgblack@eecs.umich.edu int index = 0; 16156701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 16166683Stjones1@inf.ed.ac.uk 16176683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 16187823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 16196683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 16206683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 16216683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 16226683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 16236683Stjones1@inf.ed.ac.uk 16246683Stjones1@inf.ed.ac.uk // Convert to host endianness 16258737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 16266683Stjones1@inf.ed.ac.uk 16276683Stjones1@inf.ed.ac.uk // Write back 16288706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 16296683Stjones1@inf.ed.ac.uk 16306683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 16316683Stjones1@inf.ed.ac.uk return clocks; 16326683Stjones1@inf.ed.ac.uk} 16332553SN/A 16346684Stjones1@inf.ed.ac.uk/// Target time() function. 16356684Stjones1@inf.ed.ac.uktemplate <class OS> 16366684Stjones1@inf.ed.ac.ukSyscallReturn 16376684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 16386684Stjones1@inf.ed.ac.uk ThreadContext *tc) 16396684Stjones1@inf.ed.ac.uk{ 16406684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 164110796Sbrandon.potter@amd.com getElapsedTimeMicro(sec, usec); 16426684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 16436684Stjones1@inf.ed.ac.uk 16446701Sgblack@eecs.umich.edu int index = 0; 16456701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 164611321Ssteve.reinhardt@amd.com if (taddr != 0) { 16476684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 16488737Skoansin.tan@gmail.com t = TheISA::htog(t); 16498852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 16508852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 16516684Stjones1@inf.ed.ac.uk } 16526684Stjones1@inf.ed.ac.uk return sec; 16536684Stjones1@inf.ed.ac.uk} 16542553SN/A 16552553SN/A 16561354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1657