3f722b991f
When accessing arguments for a syscall, the position of an argument depends on the policies of the ISA, how much space preceding arguments took up, and the "alignment" of the index for this particular argument into the number of possible storate locations. This change adjusts getSyscallArg to take its index parameter by reference instead of value and to adjust it to point to the possible location of the next argument on the stack, basically just after the current one. This way, the rules for the new argument can be applied locally without knowing about other arguments since those have already been taken into account implicitly. All system calls have also been changed to reflect the new interface. In a number of cases this made the implementation clearer since it encourages arguments to be collected in one place in order and then used as necessary later, as opposed to scattering them throughout the function or using them in place in long expressions. It also discourages using getSyscallArg over and over to retrieve the same value when a temporary would do the job.
532 lines
26 KiB
C++
532 lines
26 KiB
C++
/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* Copyright (c) 2007-2008 The Florida State University
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Korey Sewell
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* Stephen Hines
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*/
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#include "arch/arm/linux/linux.hh"
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#include "arch/arm/linux/process.hh"
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#include "arch/arm/isa_traits.hh"
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#include "base/trace.hh"
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#include "cpu/thread_context.hh"
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#include "kern/linux/linux.hh"
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#include "sim/process.hh"
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#include "sim/syscall_emul.hh"
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#include "sim/system.hh"
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using namespace std;
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using namespace ArmISA;
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/// Target uname() handler.
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static SyscallReturn
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unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
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ThreadContext *tc)
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{
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int index = 0;
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TypedBufferArg<Linux::utsname> name(process->getSyscallArg(tc, index));
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strcpy(name->sysname, "Linux");
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strcpy(name->nodename, "m5.eecs.umich.edu");
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strcpy(name->release, "2.6.16.19");
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strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
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strcpy(name->machine, "arm");
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name.copyOut(tc->getMemPort());
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return 0;
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}
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SyscallDesc ArmLinuxProcess::syscallDescs[] = {
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/* 0 */ SyscallDesc("syscall", unimplementedFunc),
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/* 1 */ SyscallDesc("exit", exitFunc),
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/* 2 */ SyscallDesc("fork", unimplementedFunc),
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/* 3 */ SyscallDesc("read", readFunc),
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/* 4 */ SyscallDesc("write", writeFunc),
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/* 5 */ SyscallDesc("open", openFunc<ArmLinux>),
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/* 6 */ SyscallDesc("close", closeFunc),
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/* 7 */ SyscallDesc("waitpid", unimplementedFunc), //???
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/* 8 */ SyscallDesc("creat", unimplementedFunc),
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/* 9 */ SyscallDesc("link", unimplementedFunc),
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/* 10 */ SyscallDesc("unlink", unlinkFunc),
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/* 11 */ SyscallDesc("execve", unimplementedFunc),
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/* 12 */ SyscallDesc("chdir", unimplementedFunc),
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/* 13 */ SyscallDesc("time", unimplementedFunc),
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/* 14 */ SyscallDesc("mknod", unimplementedFunc),
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/* 15 */ SyscallDesc("chmod", chmodFunc<ArmLinux>),
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/* 16 */ SyscallDesc("lchown", chownFunc),
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/* 17 */ SyscallDesc("break", brkFunc), //???
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/* 18 */ SyscallDesc("unused#18", unimplementedFunc), //???
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/* 19 */ SyscallDesc("lseek", lseekFunc),
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/* 20 */ SyscallDesc("getpid", getpidFunc),
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/* 21 */ SyscallDesc("mount", unimplementedFunc),
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/* 22 */ SyscallDesc("umount", unimplementedFunc),
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/* 23 */ SyscallDesc("setuid", setuidFunc),
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/* 24 */ SyscallDesc("getuid", getuidFunc),
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/* 25 */ SyscallDesc("stime", unimplementedFunc),
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/* 26 */ SyscallDesc("ptrace", unimplementedFunc),
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/* 27 */ SyscallDesc("alarm", unimplementedFunc),
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/* 28 */ SyscallDesc("unused#28", unimplementedFunc),
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/* 29 */ SyscallDesc("pause", unimplementedFunc),
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/* 30 */ SyscallDesc("utime", unimplementedFunc),
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/* 31 */ SyscallDesc("stty", unimplementedFunc),
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/* 32 */ SyscallDesc("gtty", unimplementedFunc),
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/* 33 */ SyscallDesc("access", unimplementedFunc),
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/* 34 */ SyscallDesc("nice", unimplementedFunc),
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/* 35 */ SyscallDesc("ftime", unimplementedFunc),
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/* 36 */ SyscallDesc("sync", unimplementedFunc),
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/* 37 */ SyscallDesc("kill", ignoreFunc),
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/* 38 */ SyscallDesc("rename", unimplementedFunc),
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/* 39 */ SyscallDesc("mkdir", unimplementedFunc),
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/* 40 */ SyscallDesc("rmdir", unimplementedFunc),
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/* 41 */ SyscallDesc("dup", unimplementedFunc),
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/* 42 */ SyscallDesc("pipe", unimplementedFunc),
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/* 43 */ SyscallDesc("times", ignoreFunc),
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/* 44 */ SyscallDesc("prof", unimplementedFunc),
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/* 45 */ SyscallDesc("brk", brkFunc),
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/* 46 */ SyscallDesc("setgid", unimplementedFunc),
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/* 47 */ SyscallDesc("getgid", getgidFunc),
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/* 48 */ SyscallDesc("signal", ignoreFunc),
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/* 49 */ SyscallDesc("geteuid", geteuidFunc),
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/* 50 */ SyscallDesc("getegid", getegidFunc),
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/* 51 */ SyscallDesc("acct", unimplementedFunc),
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/* 52 */ SyscallDesc("umount2", unimplementedFunc),
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/* 53 */ SyscallDesc("lock", unimplementedFunc),
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/* 54 */ SyscallDesc("ioctl", ioctlFunc<ArmLinux>),
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/* 55 */ SyscallDesc("fcntl", fcntlFunc),
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/* 56 */ SyscallDesc("mpx", unimplementedFunc),
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/* 57 */ SyscallDesc("setpgid", unimplementedFunc),
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/* 58 */ SyscallDesc("ulimit", unimplementedFunc),
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/* 59 */ SyscallDesc("unused#59", unimplementedFunc),
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/* 60 */ SyscallDesc("umask", unimplementedFunc),
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/* 61 */ SyscallDesc("chroot", unimplementedFunc),
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/* 62 */ SyscallDesc("ustat", unimplementedFunc),
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/* 63 */ SyscallDesc("dup2", unimplementedFunc),
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/* 64 */ SyscallDesc("getppid", getpagesizeFunc),
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/* 65 */ SyscallDesc("getpgrp", unimplementedFunc),
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/* 66 */ SyscallDesc("setsid", unimplementedFunc),
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/* 67 */ SyscallDesc("sigaction",unimplementedFunc),
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/* 68 */ SyscallDesc("sgetmask", unimplementedFunc),
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/* 69 */ SyscallDesc("ssetmask", unimplementedFunc),
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/* 70 */ SyscallDesc("setreuid", unimplementedFunc),
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/* 71 */ SyscallDesc("setregid", unimplementedFunc),
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/* 72 */ SyscallDesc("sigsuspend", unimplementedFunc),
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/* 73 */ SyscallDesc("sigpending", unimplementedFunc),
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/* 74 */ SyscallDesc("sethostname", ignoreFunc),
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/* 75 */ SyscallDesc("setrlimit", unimplementedFunc),
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/* 76 */ SyscallDesc("getrlimit", unimplementedFunc),
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/* 77 */ SyscallDesc("getrusage", unimplementedFunc),
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/* 78 */ SyscallDesc("gettimeofday", unimplementedFunc),
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/* 79 */ SyscallDesc("settimeofday", unimplementedFunc),
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/* 80 */ SyscallDesc("getgroups", unimplementedFunc),
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/* 81 */ SyscallDesc("setgroups", unimplementedFunc),
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/* 82 */ SyscallDesc("reserved#82", unimplementedFunc),
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/* 83 */ SyscallDesc("symlink", unimplementedFunc),
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/* 84 */ SyscallDesc("unused#84", unimplementedFunc),
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/* 85 */ SyscallDesc("readlink", unimplementedFunc),
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/* 86 */ SyscallDesc("uselib", unimplementedFunc),
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/* 87 */ SyscallDesc("swapon", gethostnameFunc),
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/* 88 */ SyscallDesc("reboot", unimplementedFunc),
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/* 89 */ SyscallDesc("readdir", unimplementedFunc),
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/* 90 */ SyscallDesc("mmap", mmapFunc<ArmLinux>),
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/* 91 */ SyscallDesc("munmap",munmapFunc),
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/* 92 */ SyscallDesc("truncate", truncateFunc),
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/* 93 */ SyscallDesc("ftruncate", ftruncateFunc),
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/* 94 */ SyscallDesc("fchmod", unimplementedFunc),
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/* 95 */ SyscallDesc("fchown", unimplementedFunc),
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/* 96 */ SyscallDesc("getpriority", unimplementedFunc),
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/* 97 */ SyscallDesc("setpriority", unimplementedFunc),
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/* 98 */ SyscallDesc("profil", unimplementedFunc),
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/* 99 */ SyscallDesc("statfs", unimplementedFunc),
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/* 100 */ SyscallDesc("fstatfs", unimplementedFunc),
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/* 101 */ SyscallDesc("ioperm", unimplementedFunc),
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/* 102 */ SyscallDesc("socketcall", unimplementedFunc),
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/* 103 */ SyscallDesc("syslog", unimplementedFunc),
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/* 104 */ SyscallDesc("setitimer", unimplementedFunc),
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/* 105 */ SyscallDesc("getitimer", unimplementedFunc),
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/* 106 */ SyscallDesc("stat", statFunc<ArmLinux>),
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/* 107 */ SyscallDesc("lstat", unimplementedFunc),
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/* 108 */ SyscallDesc("fstat", fstatFunc<ArmLinux>),
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/* 109 */ SyscallDesc("unused#109", unimplementedFunc),
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/* 110 */ SyscallDesc("iopl", unimplementedFunc),
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/* 111 */ SyscallDesc("vhangup", unimplementedFunc),
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/* 112 */ SyscallDesc("idle", ignoreFunc),
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/* 113 */ SyscallDesc("vm86", unimplementedFunc),
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/* 114 */ SyscallDesc("wait4", unimplementedFunc),
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/* 115 */ SyscallDesc("swapoff", unimplementedFunc),
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/* 116 */ SyscallDesc("sysinfo", sysinfoFunc<ArmLinux>),
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/* 117 */ SyscallDesc("ipc", unimplementedFunc),
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/* 118 */ SyscallDesc("fsync", unimplementedFunc),
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/* 119 */ SyscallDesc("sigreturn", unimplementedFunc),
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/* 120 */ SyscallDesc("clone", unimplementedFunc),
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/* 121 */ SyscallDesc("setdomainname", unimplementedFunc),
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/* 122 */ SyscallDesc("uname", unameFunc),
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/* 123 */ SyscallDesc("modify_ldt", unimplementedFunc),
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/* 124 */ SyscallDesc("adjtimex", unimplementedFunc),
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/* 125 */ SyscallDesc("mprotect", ignoreFunc),
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/* 126 */ SyscallDesc("sigprocmask", unimplementedFunc),
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/* 127 */ SyscallDesc("create_module", unimplementedFunc),
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/* 128 */ SyscallDesc("init_module", unimplementedFunc),
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/* 129 */ SyscallDesc("delete_module", unimplementedFunc),
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/* 130 */ SyscallDesc("get_kernel_syms", unimplementedFunc),
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/* 131 */ SyscallDesc("quotactl", unimplementedFunc),
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/* 132 */ SyscallDesc("getpgid", unimplementedFunc),
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/* 133 */ SyscallDesc("fchdir", unimplementedFunc),
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/* 134 */ SyscallDesc("bdflush", unimplementedFunc),
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/* 135 */ SyscallDesc("sysfs", unimplementedFunc),
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/* 136 */ SyscallDesc("personality", unimplementedFunc),
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/* 137 */ SyscallDesc("afs_syscall", unimplementedFunc),
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/* 138 */ SyscallDesc("setfsuid", unimplementedFunc),
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/* 139 */ SyscallDesc("setfsgid", unimplementedFunc),
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/* 140 */ SyscallDesc("llseek", unimplementedFunc),
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/* 141 */ SyscallDesc("getdents", unimplementedFunc),
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/* 142 */ SyscallDesc("newselect", unimplementedFunc),
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/* 143 */ SyscallDesc("flock", unimplementedFunc),
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/* 144 */ SyscallDesc("msync", unimplementedFunc),
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/* 145 */ SyscallDesc("readv", unimplementedFunc),
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/* 146 */ SyscallDesc("writev", writevFunc<ArmLinux>),
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/* 147 */ SyscallDesc("getsid", unimplementedFunc),
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/* 148 */ SyscallDesc("fdatasync", unimplementedFunc),
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/* 149 */ SyscallDesc("sysctl", unimplementedFunc),
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/* 150 */ SyscallDesc("mlock", unimplementedFunc),
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/* 151 */ SyscallDesc("munlock", unimplementedFunc),
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/* 152 */ SyscallDesc("mlockall", unimplementedFunc),
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/* 153 */ SyscallDesc("munlockall", unimplementedFunc),
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/* 154 */ SyscallDesc("sched_setparam", unimplementedFunc),
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/* 155 */ SyscallDesc("sched_getparam", unimplementedFunc),
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/* 156 */ SyscallDesc("sched_setscheduler", unimplementedFunc),
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/* 157 */ SyscallDesc("sched_getscheduler", unimplementedFunc),
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/* 158 */ SyscallDesc("sched_yield", unimplementedFunc),
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/* 159 */ SyscallDesc("sched_get_priority_max", unimplementedFunc),
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/* 160 */ SyscallDesc("sched_get_priority_min", unimplementedFunc),
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/* 161 */ SyscallDesc("sched_rr_get_interval", unimplementedFunc),
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/* 162 */ SyscallDesc("nanosleep", unimplementedFunc),
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/* 163 */ SyscallDesc("mremap", unimplementedFunc), // ARM-specific
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/* 164 */ SyscallDesc("setresuid", unimplementedFunc),
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/* 165 */ SyscallDesc("getresuid", unimplementedFunc),
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/* 166 */ SyscallDesc("vm862", unimplementedFunc),
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/* 167 */ SyscallDesc("query_module", unimplementedFunc),
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/* 168 */ SyscallDesc("poll", unimplementedFunc),
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/* 169 */ SyscallDesc("nfsservctl", unimplementedFunc),
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/* 170 */ SyscallDesc("setresgid", unimplementedFunc),
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/* 171 */ SyscallDesc("getresgid", unimplementedFunc),
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/* 172 */ SyscallDesc("prctl", unimplementedFunc),
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/* 173 */ SyscallDesc("rt_sigreturn", unimplementedFunc),
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/* 174 */ SyscallDesc("rt_sigaction", unimplementedFunc),
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/* 175 */ SyscallDesc("rt_sigprocmask", unimplementedFunc),
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/* 176 */ SyscallDesc("rt_sigpending", unimplementedFunc),
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/* 177 */ SyscallDesc("rt_sigtimedwait", unimplementedFunc),
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/* 178 */ SyscallDesc("rt_sigqueueinfo", ignoreFunc),
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/* 179 */ SyscallDesc("rt_sigsuspend", unimplementedFunc),
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/* 180 */ SyscallDesc("pread64", unimplementedFunc),
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/* 181 */ SyscallDesc("pwrite64", unimplementedFunc),
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/* 182 */ SyscallDesc("chown", unimplementedFunc),
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/* 183 */ SyscallDesc("getcwd", unimplementedFunc),
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/* 184 */ SyscallDesc("capget", unimplementedFunc),
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/* 185 */ SyscallDesc("capset", unimplementedFunc),
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/* 186 */ SyscallDesc("sigaltstack", unimplementedFunc),
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/* 187 */ SyscallDesc("sendfile", unimplementedFunc),
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/* 188 */ SyscallDesc("getpmsg", unimplementedFunc),
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/* 189 */ SyscallDesc("putpmsg", unimplementedFunc),
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/* 190 */ SyscallDesc("vfork", unimplementedFunc),
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/* 191 */ SyscallDesc("getrlimit", unimplementedFunc),
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/* 192 */ SyscallDesc("mmap2", mmapFunc<ArmLinux>),
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/* 193 */ SyscallDesc("truncate64", unimplementedFunc),
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/* 194 */ SyscallDesc("ftruncate64", unimplementedFunc),
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/* 195 */ SyscallDesc("stat64", unimplementedFunc),
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/* 196 */ SyscallDesc("lstat64", lstat64Func<ArmLinux>),
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/* 197 */ SyscallDesc("fstat64", fstat64Func<ArmLinux>),
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/* 198 */ SyscallDesc("lchown", unimplementedFunc),
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/* 199 */ SyscallDesc("getuid", getuidFunc),
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/* 200 */ SyscallDesc("getgid", getgidFunc),
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/* 201 */ SyscallDesc("geteuid", geteuidFunc),
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/* 202 */ SyscallDesc("getegid", getegidFunc),
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/* 203 */ SyscallDesc("setreuid", unimplementedFunc),
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/* 204 */ SyscallDesc("setregid", unimplementedFunc),
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/* 205 */ SyscallDesc("getgroups", unimplementedFunc),
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/* 206 */ SyscallDesc("setgroups", unimplementedFunc),
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/* 207 */ SyscallDesc("fchown", unimplementedFunc),
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/* 208 */ SyscallDesc("setresuid", unimplementedFunc),
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/* 209 */ SyscallDesc("getresuid", unimplementedFunc),
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/* 210 */ SyscallDesc("setresgid", unimplementedFunc),
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/* 211 */ SyscallDesc("getresgid", unimplementedFunc),
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/* 212 */ SyscallDesc("chown", unimplementedFunc),
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/* 213 */ SyscallDesc("setuid", unimplementedFunc),
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/* 214 */ SyscallDesc("setgid", unimplementedFunc),
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/* 215 */ SyscallDesc("setfsuid", unimplementedFunc),
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/* 216 */ SyscallDesc("setfsgid", unimplementedFunc),
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/* 217 */ SyscallDesc("getdents64", unimplementedFunc),
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/* 218 */ SyscallDesc("pivot_root", unimplementedFunc),
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/* 219 */ SyscallDesc("mincore", unimplementedFunc),
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/* 220 */ SyscallDesc("madvise", unimplementedFunc),
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/* 221 */ SyscallDesc("fcntl64", fcntl64Func),
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/* 222 */ SyscallDesc("tux", unimplementedFunc),
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/* 223 */ SyscallDesc("unknown#223", unimplementedFunc),
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/* 224 */ SyscallDesc("gettid", unimplementedFunc),
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/* 225 */ SyscallDesc("readahead", unimplementedFunc),
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/* 226 */ SyscallDesc("setxattr", unimplementedFunc),
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/* 227 */ SyscallDesc("lsetxattr", unimplementedFunc),
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/* 228 */ SyscallDesc("fsetxattr", unimplementedFunc),
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/* 229 */ SyscallDesc("getxattr", unimplementedFunc),
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/* 230 */ SyscallDesc("lgetxattr", unimplementedFunc),
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/* 231 */ SyscallDesc("fgetxattr", unimplementedFunc),
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/* 232 */ SyscallDesc("listxattr", unimplementedFunc),
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/* 233 */ SyscallDesc("llistxattr", unimplementedFunc),
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/* 234 */ SyscallDesc("flistxattr", unimplementedFunc),
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/* 235 */ SyscallDesc("removexattr", unimplementedFunc),
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/* 236 */ SyscallDesc("lremovexattr", unimplementedFunc),
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/* 237 */ SyscallDesc("fremovexattr", unimplementedFunc),
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/* 238 */ SyscallDesc("tkill", unimplementedFunc),
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/* 239 */ SyscallDesc("sendfile64", unimplementedFunc),
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/* 240 */ SyscallDesc("futex", unimplementedFunc),
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/* 241 */ SyscallDesc("sched_setaffinity", unimplementedFunc),
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/* 242 */ SyscallDesc("sched_getaffinity", unimplementedFunc),
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/* 243 */ SyscallDesc("io_setup", unimplementedFunc),
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/* 244 */ SyscallDesc("io_destory", unimplementedFunc),
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/* 245 */ SyscallDesc("io_getevents", unimplementedFunc),
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/* 246 */ SyscallDesc("io_submit", unimplementedFunc),
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/* 247 */ SyscallDesc("io_cancel", unimplementedFunc),
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/* 248 */ SyscallDesc("exit_group", exitFunc),
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/* 249 */ SyscallDesc("lookup_dcookie", unimplementedFunc),
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/* 250 */ SyscallDesc("epoll_create", unimplementedFunc),
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/* 251 */ SyscallDesc("epoll_ctl", unimplementedFunc),
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/* 252 */ SyscallDesc("epoll_wait", unimplementedFunc),
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/* 253 */ SyscallDesc("remap_file_pages", unimplementedFunc),
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/* 254 */ SyscallDesc("set_thread_area", unimplementedFunc),
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/* 255 */ SyscallDesc("get_thread_area", unimplementedFunc),
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/* 256 */ SyscallDesc("set_tid_address", unimplementedFunc),
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/* 257 */ SyscallDesc("timer_create", unimplementedFunc),
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/* 258 */ SyscallDesc("timer_settime", unimplementedFunc),
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/* 259 */ SyscallDesc("timer_gettime", unimplementedFunc),
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/* 260 */ SyscallDesc("timer_getoverrun", unimplementedFunc),
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/* 261 */ SyscallDesc("timer_delete", unimplementedFunc),
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/* 262 */ SyscallDesc("clock_settime", unimplementedFunc),
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/* 263 */ SyscallDesc("clock_gettime", unimplementedFunc),
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/* 264 */ SyscallDesc("clock_getres", unimplementedFunc),
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/* 265 */ SyscallDesc("clock_nanosleep", unimplementedFunc),
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/* 266 */ SyscallDesc("statfs64", unimplementedFunc),
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/* 267 */ SyscallDesc("fstatfs64", unimplementedFunc),
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/* 268 */ SyscallDesc("tgkill", unimplementedFunc),
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/* 269 */ SyscallDesc("utimes", unimplementedFunc),
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/* 270 */ SyscallDesc("arm_fadvise64_64", unimplementedFunc),
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/* 271 */ SyscallDesc("pciconfig_iobase", unimplementedFunc),
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/* 272 */ SyscallDesc("pciconfig_read", unimplementedFunc),
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/* 273 */ SyscallDesc("pciconfig_write", unimplementedFunc),
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/* 274 */ SyscallDesc("mq_open", unimplementedFunc),
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/* 275 */ SyscallDesc("mq_unlink", unimplementedFunc),
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/* 276 */ SyscallDesc("mq_timedsend", unimplementedFunc),
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/* 277 */ SyscallDesc("mq_timedreceive", unimplementedFunc),
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/* 278 */ SyscallDesc("mq_notify", unimplementedFunc),
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/* 279 */ SyscallDesc("mq_getsetattr", unimplementedFunc),
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/* 280 */ SyscallDesc("waitid", unimplementedFunc),
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/* 281 */ SyscallDesc("socket", unimplementedFunc),
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/* 282 */ SyscallDesc("bind", unimplementedFunc),
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/* 283 */ SyscallDesc("connect", unimplementedFunc),
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/* 284 */ SyscallDesc("listen", unimplementedFunc),
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/* 285 */ SyscallDesc("accept", unimplementedFunc),
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/* 286 */ SyscallDesc("getsockname", unimplementedFunc),
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/* 287 */ SyscallDesc("getpeername", unimplementedFunc),
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/* 288 */ SyscallDesc("socketpair", unimplementedFunc),
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/* 289 */ SyscallDesc("send", unimplementedFunc),
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/* 290 */ SyscallDesc("sendto", unimplementedFunc),
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/* 291 */ SyscallDesc("recv", unimplementedFunc),
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/* 292 */ SyscallDesc("recvfrom", unimplementedFunc),
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/* 293 */ SyscallDesc("shutdown", unimplementedFunc),
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/* 294 */ SyscallDesc("setsockopt", unimplementedFunc),
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/* 295 */ SyscallDesc("getsockopt", unimplementedFunc),
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/* 296 */ SyscallDesc("sendmsg", unimplementedFunc),
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/* 297 */ SyscallDesc("rcvmsg", unimplementedFunc),
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/* 298 */ SyscallDesc("semop", unimplementedFunc),
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/* 299 */ SyscallDesc("semget", unimplementedFunc),
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/* 300 */ SyscallDesc("semctl", unimplementedFunc),
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/* 301 */ SyscallDesc("msgsend", unimplementedFunc),
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/* 302 */ SyscallDesc("msgrcv", unimplementedFunc),
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/* 303 */ SyscallDesc("msgget", unimplementedFunc),
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/* 304 */ SyscallDesc("msgctl", unimplementedFunc),
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/* 305 */ SyscallDesc("shmat", unimplementedFunc),
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/* 306 */ SyscallDesc("shmdt", unimplementedFunc),
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/* 307 */ SyscallDesc("shmget", unimplementedFunc),
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/* 308 */ SyscallDesc("shmctl", unimplementedFunc),
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/* 309 */ SyscallDesc("add_key", unimplementedFunc),
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/* 310 */ SyscallDesc("request_key", unimplementedFunc),
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/* 311 */ SyscallDesc("keyctl", unimplementedFunc),
|
|
/* 312 */ SyscallDesc("semtimedop", unimplementedFunc),
|
|
/* 313 */ SyscallDesc("vserver", unimplementedFunc),
|
|
/* 314 */ SyscallDesc("ioprio_set", unimplementedFunc),
|
|
/* 315 */ SyscallDesc("ioprio_get", unimplementedFunc),
|
|
/* 316 */ SyscallDesc("inotify_init", unimplementedFunc),
|
|
/* 317 */ SyscallDesc("inotify_add_watch", unimplementedFunc),
|
|
/* 318 */ SyscallDesc("inotify_rm_watch", unimplementedFunc),
|
|
/* 319 */ SyscallDesc("mbind", unimplementedFunc),
|
|
/* 320 */ SyscallDesc("get_mempolicy", unimplementedFunc),
|
|
/* 321 */ SyscallDesc("set_mempolicy", unimplementedFunc),
|
|
/* 322 */ SyscallDesc("openat", unimplementedFunc),
|
|
/* 323 */ SyscallDesc("mkdirat", unimplementedFunc),
|
|
/* 324 */ SyscallDesc("mknodat", unimplementedFunc),
|
|
/* 325 */ SyscallDesc("fchownat", unimplementedFunc),
|
|
/* 326 */ SyscallDesc("futimesat", unimplementedFunc),
|
|
/* 327 */ SyscallDesc("fstatat64", unimplementedFunc),
|
|
/* 328 */ SyscallDesc("unlinkat", unimplementedFunc),
|
|
/* 329 */ SyscallDesc("renameat", unimplementedFunc),
|
|
/* 330 */ SyscallDesc("linkat", unimplementedFunc),
|
|
/* 331 */ SyscallDesc("symlinkat", unimplementedFunc),
|
|
/* 332 */ SyscallDesc("readlinkat", unimplementedFunc),
|
|
/* 333 */ SyscallDesc("fchmodat", unimplementedFunc),
|
|
/* 334 */ SyscallDesc("faccessat", unimplementedFunc),
|
|
/* 335 */ SyscallDesc("pselect6", unimplementedFunc),
|
|
/* 336 */ SyscallDesc("ppoll", unimplementedFunc),
|
|
/* 337 */ SyscallDesc("unshare", unimplementedFunc),
|
|
/* 338 */ SyscallDesc("set_robust_list", unimplementedFunc),
|
|
/* 339 */ SyscallDesc("get_robust_list", unimplementedFunc),
|
|
/* 340 */ SyscallDesc("splice", unimplementedFunc),
|
|
/* 341 */ SyscallDesc("arm_sync_file_range", unimplementedFunc),
|
|
/* 342 */ SyscallDesc("tee", unimplementedFunc),
|
|
/* 343 */ SyscallDesc("vmsplice", unimplementedFunc),
|
|
/* 344 */ SyscallDesc("move_pages", unimplementedFunc),
|
|
/* 345 */ SyscallDesc("getcpu", unimplementedFunc),
|
|
/* 346 */ SyscallDesc("epoll_pwait", unimplementedFunc),
|
|
};
|
|
|
|
/// Target set_tls() handler.
|
|
static SyscallReturn
|
|
setTLSFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
|
|
ThreadContext *tc)
|
|
{
|
|
int index = 0;
|
|
uint32_t tlsPtr = process->getSyscallArg(tc, index);
|
|
|
|
tc->getMemPort()->writeBlob(ArmLinuxProcess::commPage + 0x0ff0,
|
|
(uint8_t *)&tlsPtr, sizeof(tlsPtr));
|
|
return 0;
|
|
}
|
|
|
|
SyscallDesc ArmLinuxProcess::privSyscallDescs[] = {
|
|
/* 1 */ SyscallDesc("breakpoint", unimplementedFunc),
|
|
/* 2 */ SyscallDesc("cacheflush", unimplementedFunc),
|
|
/* 3 */ SyscallDesc("usr26", unimplementedFunc),
|
|
/* 4 */ SyscallDesc("usr32", unimplementedFunc),
|
|
/* 5 */ SyscallDesc("set_tls", setTLSFunc)
|
|
};
|
|
|
|
ArmLinuxProcess::ArmLinuxProcess(LiveProcessParams * params,
|
|
ObjectFile *objFile)
|
|
: ArmLiveProcess(params, objFile),
|
|
Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc)),
|
|
Num_Priv_Syscall_Descs(sizeof(privSyscallDescs) / sizeof(SyscallDesc))
|
|
{ }
|
|
|
|
const Addr ArmLinuxProcess::commPage = 0xffff0000;
|
|
|
|
SyscallDesc*
|
|
ArmLinuxProcess::getDesc(int callnum)
|
|
{
|
|
// Angel SWI syscalls are unsupported in this release
|
|
if (callnum == 0x123456) {
|
|
panic("Attempt to execute an ANGEL_SWI system call (newlib-related)");
|
|
} else if ((callnum & 0x00f00000) == 0x00900000 ||
|
|
(callnum & 0xf0000) == 0xf0000) {
|
|
callnum &= 0x000fffff;
|
|
if ((callnum & 0x0f0000) == 0xf0000) {
|
|
callnum -= 0x0f0001;
|
|
if (callnum < 0 || callnum > Num_Priv_Syscall_Descs)
|
|
return NULL;
|
|
return &privSyscallDescs[callnum];
|
|
}
|
|
}
|
|
// Linux syscalls have to strip off the 0x00900000
|
|
|
|
if (callnum < 0 || callnum > Num_Syscall_Descs)
|
|
return NULL;
|
|
|
|
return &syscallDescs[callnum];
|
|
}
|
|
|
|
void
|
|
ArmLinuxProcess::startup()
|
|
{
|
|
ArmLiveProcess::startup();
|
|
pTable->allocate(commPage, PageBytes);
|
|
ThreadContext *tc = system->getThreadContext(contextIds[0]);
|
|
|
|
uint8_t swiNeg1[] = {
|
|
0xff, 0xff, 0xff, 0xef //swi -1
|
|
};
|
|
|
|
// Fill this page with swi -1 so we'll no if we land in it somewhere.
|
|
for (Addr addr = 0; addr < PageBytes; addr += sizeof(swiNeg1)) {
|
|
tc->getMemPort()->writeBlob(commPage + addr,
|
|
swiNeg1, sizeof(swiNeg1));
|
|
}
|
|
|
|
// We don't have barriers, so just return.
|
|
uint8_t memory_barrier[] =
|
|
{
|
|
0x0e, 0xf0, 0xa0, 0xe1 //usr_ret lr
|
|
};
|
|
tc->getMemPort()->writeBlob(commPage + 0x0fa0, memory_barrier,
|
|
sizeof(memory_barrier));
|
|
|
|
// This -should- be atomic, but I don't think all the support that we'd
|
|
// need is implemented. There should also be memory barriers around it.
|
|
uint8_t cmpxchg[] =
|
|
{
|
|
0x00, 0x30, 0x92, 0xe5, //ldr r3, [r2]
|
|
0x00, 0x30, 0x53, 0xe0, //subs r3, r3, r0
|
|
0x00, 0x10, 0x82, 0x05, //streq r1, [r2]
|
|
0x03, 0x00, 0xa0, 0xe1, //mov r0, r3
|
|
0x0e, 0xf0, 0xa0, 0xe1 //usr_ret lr
|
|
};
|
|
tc->getMemPort()->writeBlob(commPage + 0x0fc0, cmpxchg, sizeof(cmpxchg));
|
|
|
|
uint8_t get_tls[] =
|
|
{
|
|
0x08, 0x00, 0x9f, 0xe5, //ldr r0, [pc, #(16 - 8)]
|
|
0x0e, 0xf0, 0xa0, 0xe1 //usr_ret lr
|
|
};
|
|
tc->getMemPort()->writeBlob(commPage + 0x0fe0, get_tls, sizeof(get_tls));
|
|
}
|
|
|
|
ArmISA::IntReg
|
|
ArmLinuxProcess::getSyscallArg(ThreadContext *tc, int &i)
|
|
{
|
|
// Linux apparently allows more parameter than the ABI says it should.
|
|
// This limit may need to be increased even further.
|
|
assert(i < 6);
|
|
return tc->readIntReg(ArgumentReg0 + i++);
|
|
}
|
|
|
|
void
|
|
ArmLinuxProcess::setSyscallArg(ThreadContext *tc, int i, ArmISA::IntReg val)
|
|
{
|
|
// Linux apparently allows more parameter than the ABI says it should.
|
|
// This limit may need to be increased even further.
|
|
assert(i < 6);
|
|
tc->setIntReg(ArgumentReg0 + i, val);
|
|
}
|