syscalls.cc

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· CC 代码 · 共 682 行 · 第 1/3 页

/*
 * Copyright (c) 2003, 2004, 2005
 * The Regents of The University of Michigan
 * All Rights Reserved
 *
 * This code is part of the M5 simulator.
 *
 * Permission is granted to use, copy, create derivative works and
 * redistribute this software and such derivative works for any
 * purpose, so long as the copyright notice above, this grant of
 * permission, and the disclaimer below appear in all copies made; and
 * so long as the name of The University of Michigan is not used in
 * any advertising or publicity pertaining to the use or distribution
 * of this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND
 * WITHOUT WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE. THE REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE
 * LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, SPECIAL, INDIRECT,
 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGES.
 *
 * Authors: Gabe M. Black
 */

#include "arch/sparc/linux/process.hh"
#include "arch/sparc/syscallreturn.hh"
#include "sim/syscall_emul.hh"

class LiveProcess;
class ThreadContext;

namespace SparcISA {

/// Target uname() handler.
static SyscallReturn
unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
        ThreadContext *tc)
{
    TypedBufferArg<Linux::utsname> name(tc->getSyscallArg(0));

    strcpy(name->sysname, "Linux");
    strcpy(name->nodename, "m5.eecs.umich.edu");
    strcpy(name->release, "2.6.12-9-sparc64");
    strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
    strcpy(name->machine, "sparc");

    name.copyOut(tc->getMemPort());

    return 0;
}


SyscallReturn getresuidFunc(SyscallDesc *desc, int num,
        LiveProcess *p, ThreadContext *tc)
{
    const IntReg id = htog(100);
    Addr ruid = tc->getSyscallArg(0);
    Addr euid = tc->getSyscallArg(1);
    Addr suid = tc->getSyscallArg(2);
    //Handle the EFAULT case
    //Set the ruid
    if(ruid)
    {
        BufferArg ruidBuff(ruid, sizeof(IntReg));
        memcpy(ruidBuff.bufferPtr(), &id, sizeof(IntReg));
        ruidBuff.copyOut(tc->getMemPort());
    }
    //Set the euid
    if(euid)
    {
        BufferArg euidBuff(euid, sizeof(IntReg));
        memcpy(euidBuff.bufferPtr(), &id, sizeof(IntReg));
        euidBuff.copyOut(tc->getMemPort());
    }
    //Set the suid
    if(suid)
    {
        BufferArg suidBuff(suid, sizeof(IntReg));
        memcpy(suidBuff.bufferPtr(), &id, sizeof(IntReg));
        suidBuff.copyOut(tc->getMemPort());
    }
    return 0;
}

SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
    /*   0 */ SyscallDesc("restart_syscall", unimplementedFunc),
    /*   1 */ SyscallDesc("exit", exitFunc), //32 bit
    /*   2 */ SyscallDesc("fork", unimplementedFunc),
    /*   3 */ SyscallDesc("read", readFunc),
    /*   4 */ SyscallDesc("write", writeFunc),
    /*   5 */ SyscallDesc("open", openFunc<Sparc32Linux>), //32 bit
    /*   6 */ SyscallDesc("close", closeFunc),
    /*   7 */ SyscallDesc("wait4", unimplementedFunc), //32 bit
    /*   8 */ SyscallDesc("creat", unimplementedFunc), //32 bit
    /*   9 */ SyscallDesc("link", unimplementedFunc),
    /*  10 */ SyscallDesc("unlink", unlinkFunc),
    /*  11 */ SyscallDesc("execv", unimplementedFunc),
    /*  12 */ SyscallDesc("chdir", unimplementedFunc),
    /*  13 */ SyscallDesc("chown", chownFunc), //32 bit
    /*  14 */ SyscallDesc("mknod", unimplementedFunc),
    /*  15 */ SyscallDesc("chmod", unimplementedFunc),
    /*  16 */ SyscallDesc("lchown", unimplementedFunc), //32 bit
    /*  17 */ SyscallDesc("brk", obreakFunc),
    /*  18 */ SyscallDesc("perfctr", unimplementedFunc), //32 bit
    /*  19 */ SyscallDesc("lseek", lseekFunc), //32 bit
    /*  20 */ SyscallDesc("getpid", getpidFunc),
    /*  21 */ SyscallDesc("capget", unimplementedFunc),
    /*  22 */ SyscallDesc("capset", unimplementedFunc),
    /*  23 */ SyscallDesc("setuid", setuidFunc), //32 bit
    /*  24 */ SyscallDesc("getuid", getuidFunc), //32 bit
    /*  25 */ SyscallDesc("time", unimplementedFunc),
    /*  26 */ SyscallDesc("ptrace", unimplementedFunc),
    /*  27 */ SyscallDesc("alarm", unimplementedFunc),
    /*  28 */ SyscallDesc("sigaltstack", unimplementedFunc), //32 bit
    /*  29 */ SyscallDesc("pause", unimplementedFunc), //32 bit
    /*  30 */ SyscallDesc("utime", unimplementedFunc),
    /*  31 */ SyscallDesc("lchown32", unimplementedFunc),
    /*  32 */ SyscallDesc("fchown32", unimplementedFunc),
    /*  33 */ SyscallDesc("access", unimplementedFunc), //32 bit
    /*  34 */ SyscallDesc("nice", unimplementedFunc), //32 bit
    /*  35 */ SyscallDesc("chown32", unimplementedFunc),
    /*  36 */ SyscallDesc("sync", unimplementedFunc),
    /*  37 */ SyscallDesc("kill", unimplementedFunc), //32 bit
    /*  38 */ SyscallDesc("stat", unimplementedFunc),
    /*  39 */ SyscallDesc("sendfile", unimplementedFunc), //32 bit
    /*  40 */ SyscallDesc("lstat", unimplementedFunc),
    /*  41 */ SyscallDesc("dup", unimplementedFunc),
    /*  42 */ SyscallDesc("pipe", pipePseudoFunc),
    /*  43 */ SyscallDesc("times", ignoreFunc),
    /*  44 */ SyscallDesc("getuid32", unimplementedFunc),
    /*  45 */ SyscallDesc("umount2", unimplementedFunc), //32 bit
    /*  46 */ SyscallDesc("setgid", unimplementedFunc), //32 bit
    /*  47 */ SyscallDesc("getgid", getgidFunc), //32 bit
    /*  48 */ SyscallDesc("signal", unimplementedFunc), //32 bit
    /*  49 */ SyscallDesc("geteuid", geteuidFunc), //32 bit
    /*  50 */ SyscallDesc("getegid", getegidFunc), //32 bit
    /*  51 */ SyscallDesc("acct", unimplementedFunc),
    /*  52 */ SyscallDesc("memory_ordering", unimplementedFunc),
    /*  53 */ SyscallDesc("getgid32", unimplementedFunc),
    /*  54 */ SyscallDesc("ioctl", unimplementedFunc),
    /*  55 */ SyscallDesc("reboot", unimplementedFunc), //32 bit
    /*  56 */ SyscallDesc("mmap2", unimplementedFunc), //32 bit
    /*  57 */ SyscallDesc("symlink", unimplementedFunc),
    /*  58 */ SyscallDesc("readlink", unimplementedFunc), //32 bit
    /*  59 */ SyscallDesc("execve", unimplementedFunc), //32 bit
    /*  60 */ SyscallDesc("umask", unimplementedFunc), //32 bit
    /*  61 */ SyscallDesc("chroot", unimplementedFunc),
    /*  62 */ SyscallDesc("fstat", unimplementedFunc),
    /*  63 */ SyscallDesc("fstat64", fstat64Func<Sparc32Linux>),
    /*  64 */ SyscallDesc("getpagesize", unimplementedFunc),
    /*  65 */ SyscallDesc("msync", unimplementedFunc), //32 bit
    /*  66 */ SyscallDesc("vfork", unimplementedFunc),
    /*  67 */ SyscallDesc("pread64", unimplementedFunc), //32 bit
    /*  68 */ SyscallDesc("pwrite64", unimplementedFunc), //32 bit
    /*  69 */ SyscallDesc("geteuid32", unimplementedFunc),
    /*  70 */ SyscallDesc("getegid32", unimplementedFunc),
    /*  71 */ SyscallDesc("mmap", mmapFunc<Sparc32Linux>),
    /*  72 */ SyscallDesc("setreuid32", unimplementedFunc),
    /*  73 */ SyscallDesc("munmap", munmapFunc),
    /*  74 */ SyscallDesc("mprotect", unimplementedFunc),
    /*  75 */ SyscallDesc("madvise", unimplementedFunc),
    /*  76 */ SyscallDesc("vhangup", unimplementedFunc),
    /*  77 */ SyscallDesc("truncate64", unimplementedFunc), //32 bit
    /*  78 */ SyscallDesc("mincore", unimplementedFunc),
    /*  79 */ SyscallDesc("getgroups", unimplementedFunc), //32 bit
    /*  80 */ SyscallDesc("setgroups", unimplementedFunc), //32 bit
    /*  81 */ SyscallDesc("getpgrp", unimplementedFunc),
    /*  82 */ SyscallDesc("setgroups32", unimplementedFunc), //32 bit
    /*  83 */ SyscallDesc("setitimer", unimplementedFunc), //32 bit
    /*  84 */ SyscallDesc("ftruncate64", unimplementedFunc), //32 bit
    /*  85 */ SyscallDesc("swapon", unimplementedFunc), //32 bit
    /*  86 */ SyscallDesc("getitimer", unimplementedFunc), //32 bit
    /*  87 */ SyscallDesc("setuid32", unimplementedFunc),
    /*  88 */ SyscallDesc("sethostname", unimplementedFunc), //32 bit
    /*  89 */ SyscallDesc("setgid32", unimplementedFunc),
    /*  90 */ SyscallDesc("dup2", unimplementedFunc),
    /*  91 */ SyscallDesc("setfsuid32", unimplementedFunc),
    /*  92 */ SyscallDesc("fcntl", unimplementedFunc),
    /*  93 */ SyscallDesc("select", unimplementedFunc), //32 bit
    /*  94 */ SyscallDesc("setfsgid32", unimplementedFunc),
    /*  95 */ SyscallDesc("fsync", unimplementedFunc),
    /*  96 */ SyscallDesc("setpriority", unimplementedFunc), //32 bit
    /*  97 */ SyscallDesc("socket", unimplementedFunc),
    /*  98 */ SyscallDesc("connect", unimplementedFunc),
    /*  99 */ SyscallDesc("accept", unimplementedFunc),
    /* 100 */ SyscallDesc("getpriority", unimplementedFunc), //32 bit
    /* 101 */ SyscallDesc("rt_sigreturn", unimplementedFunc), //32 bit
    /* 102 */ SyscallDesc("rt_sigaction", ignoreFunc), //32 bit
    /* 103 */ SyscallDesc("rt_sigprocmask", unimplementedFunc), //32 bit
    /* 104 */ SyscallDesc("rt_sigpending", unimplementedFunc), //32 bit
    /* 105 */ SyscallDesc("rt_sigtimedwait", unimplementedFunc),
    /* 106 */ SyscallDesc("rt_sigqueueinfo", unimplementedFunc), //32 bit
    /* 107 */ SyscallDesc("rt_sigsuspend", unimplementedFunc),
    /* 108 */ SyscallDesc("setresuid32", unimplementedFunc),
    /* 109 */ SyscallDesc("getresuid32", getresuidFunc),
    /* 110 */ SyscallDesc("setresgid32", unimplementedFunc),
    /* 111 */ SyscallDesc("getresgid32", unimplementedFunc),
    /* 112 */ SyscallDesc("setregid32", unimplementedFunc),
    /* 113 */ SyscallDesc("revcmsg", unimplementedFunc),
    /* 114 */ SyscallDesc("sendmsg", unimplementedFunc),
    /* 115 */ SyscallDesc("getgroups32", unimplementedFunc), //32 bit
    /* 116 */ SyscallDesc("gettimeofday", unimplementedFunc), //32 bit
    /* 117 */ SyscallDesc("getrusage", unimplementedFunc), //32 bit
    /* 118 */ SyscallDesc("getsockopt", unimplementedFunc),
    /* 119 */ SyscallDesc("getcwd", unimplementedFunc),
    /* 120 */ SyscallDesc("readv", unimplementedFunc),
    /* 121 */ SyscallDesc("writev", unimplementedFunc),
    /* 122 */ SyscallDesc("settimeofday", unimplementedFunc), //32 bit
    /* 123 */ SyscallDesc("fchown", unimplementedFunc), //32 bit
    /* 124 */ SyscallDesc("fchmod", unimplementedFunc),
    /* 125 */ SyscallDesc("recvfrom", unimplementedFunc),
    /* 126 */ SyscallDesc("setreuid", unimplementedFunc), //32 bit
    /* 127 */ SyscallDesc("setregid", unimplementedFunc), //32 bit
    /* 128 */ SyscallDesc("rename", renameFunc),
    /* 129 */ SyscallDesc("truncate", unimplementedFunc),
    /* 130 */ SyscallDesc("ftruncate", unimplementedFunc),
    /* 131 */ SyscallDesc("flock", unimplementedFunc),
    /* 132 */ SyscallDesc("lstat64", unimplementedFunc),
    /* 133 */ SyscallDesc("sendto", unimplementedFunc),
    /* 134 */ SyscallDesc("shutdown", unimplementedFunc),
    /* 135 */ SyscallDesc("socketpair", unimplementedFunc),
    /* 136 */ SyscallDesc("mkdir", unimplementedFunc), //32 bit