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[Pearcolator-devel] SF.net SVN: pearcolator: [93] src/org/binarytranslator/generic/os/abi/linux
|
From: <mic...@us...> - 2007-04-26 20:26:02
|
Revision: 93
http://svn.sourceforge.net/pearcolator/?rev=93&view=rev
Author: michael_baer
Date: 2007-04-26 13:26:01 -0700 (Thu, 26 Apr 2007)
Log Message:
-----------
- Moved file handling into separate package.
- Introduced abstractions for linux files, so that we can later add sockets etc.
- Introduced dummy for the stat64 syscall
Modified Paths:
--------------
src/org/binarytranslator/generic/os/abi/linux/LinuxSystemCalls.java
Added Paths:
-----------
src/org/binarytranslator/generic/os/abi/linux/files/
src/org/binarytranslator/generic/os/abi/linux/files/ConsoleIn.java
src/org/binarytranslator/generic/os/abi/linux/files/ConsoleOut.java
src/org/binarytranslator/generic/os/abi/linux/files/HostFile.java
src/org/binarytranslator/generic/os/abi/linux/files/OpenFile.java
src/org/binarytranslator/generic/os/abi/linux/files/OpenFileList.java
src/org/binarytranslator/generic/os/abi/linux/files/ReadableFile.java
src/org/binarytranslator/generic/os/abi/linux/files/WriteableFile.java
Modified: src/org/binarytranslator/generic/os/abi/linux/LinuxSystemCalls.java
===================================================================
--- src/org/binarytranslator/generic/os/abi/linux/LinuxSystemCalls.java 2007-04-25 19:15:36 UTC (rev 92)
+++ src/org/binarytranslator/generic/os/abi/linux/LinuxSystemCalls.java 2007-04-26 20:26:01 UTC (rev 93)
@@ -1,902 +1,864 @@
-/*
- * This file is part of binarytranslator.org. The binarytranslator.org
- * project is distributed under the Common Public License (CPL).
- * A copy of the license is included in the distribution, and is also
- * available at http://www.opensource.org/licenses/cpl1.0.php
- *
- * (C) Copyright Ian Rogers, The University of Manchester 2003-2006
- */
-package org.binarytranslator.generic.os.abi.linux;
-
-import java.io.*;
-import org.binarytranslator.DBT_Options;
-import org.binarytranslator.generic.memory.Memory;
-import org.binarytranslator.generic.memory.MemoryMapException;
-import java.util.ArrayList;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-
-/**
- * Linux system call handling class
- */
-abstract public class LinuxSystemCalls {
- /**
- * The source of the system calls
- */
- protected LinuxSystemCallGenerator src;
-
- /** Allows access to the system call's arguments */
- protected LinuxSystemCallGenerator.CallArgumentIterator arguments;
-
- /** Allows access to a number of operating-system specific structures. */
- protected LinuxStructureFactory structures;
-
- /**
- * Maximum number of system calls
- */
- private static final int MAX_SYSCALLS = 294;
-
- /**
- * Array to de-multiplex Linux system calls. NB we will have to
- * handle IA32 call gates entry at some point
- */
- protected SystemCall systemCallTable[];
-
- /**
- * The name for this system given by uname
- */
- protected String getSysName() {
- return "Linux";
- }
- /**
- * The release for this system given by uname
- */
- protected String getRelease() {
- return "2.6.13";
- }
- /**
- * The version for this system given by uname
- */
- protected String getVersion() {
- return "#1";
- }
- /**
- * The machine for this system given by uname
- */
- protected abstract String getMachine();
-
- /**
- * List of (RandomAccessFile(s)) files currently open
- */
- private ArrayList<Object> files;
-
-
- /**
- * Load an ASCIIZ string from the memory of the system call
- * generator and return it as a Java String.
- * @param address where to read
- * @return the String read
- */
- private String memoryReadString(int address) {
- Memory m = src.getProcessSpace().memory;
-
- StringBuffer str = new StringBuffer();
- char c;
-
- while ((c = (char) m.loadUnsigned8(address++)) != 0)
- str.append(c);
-
- return str.toString();
- }
-
- /**
- * Store an ASCIIZ string to the memory of the system call generator
- * @param address where to read
- * @param data the String to write
- */
- public void memoryWriteString(int address, String data) {
- Memory m = src.getProcessSpace().memory;
-
- if (data != null) {
- for (int i = 0; i < data.length(); i++) {
- m.store8(address + i, (byte) data.charAt(i));
- }
-
- m.store8(address + data.length(), (byte) 0);
- }
- }
-
- /**
- * Convert integer file descriptor into Java RandomAccessFile
- */
- private RandomAccessFile getRAFile(int fd) {
- return (RandomAccessFile)files.get(fd);
- }
- /**
- * Append the given file to the files list returning the location
- */
- private int appendRAFile(RandomAccessFile raFile) {
- // replace an unused entry if possible
- for (int i=3; i < files.size(); i++) {
- if(files.get(i) == null) {
- files.set(i, raFile);
- return i;
- }
- }
- // not possible so append to end
- files.add(raFile);
- return files.size() - 1;
- }
- /**
- * Remove the file for the given file descriptor
- */
- private void removeRAFile(int fd) {
- // check descriptor is valid
- if((fd > 0) && (fd < files.size())) {
- // can we remove it from the end of the list?
- if (fd == (files.size() - 1)) {
- files.remove(fd);
- }
- else {
- // no. set it to null
- files.set(fd, null);
- }
- }
- }
- /**
- * Constructor
- */
- public LinuxSystemCalls(LinuxSystemCallGenerator src) {
- this.src = src;
- systemCallTable = new SystemCall[MAX_SYSCALLS];
- UnknownSystemCall USC = new UnknownSystemCall();
- for(int i=0; i < MAX_SYSCALLS; i++) {
- systemCallTable[i] = USC;
- }
- files = new ArrayList<Object>();
- files.add(System.in);
- files.add(System.out);
- files.add(System.err);
- }
-
- /**
- * Handle a system call
- * @param src the system call generator
- */
- public void doSysCall() {
- int sysCallNumber = src.getSysCallNumber();
- System.err.println("Syscall "+ sysCallToString(sysCallNumber));
- arguments = src.getSysCallArguments();
- systemCallTable[sysCallNumber].doSysCall();
- }
-
- /**
- * Turn the given system call number into a string describing its
- * function
- */
- abstract public String sysCallToString(int syscall);
-
- /*
- * ABI constants
- */
-
- /**
- * Class capturing errno constants
- */
- private final static class errno {
- /** Operation not permitted */
- final static int EPERM=1;
- /** No such file or directory */
- final static int ENOENT=2;
- /** No such process */
- final static int ESRCH=3;
- /** Interrupted system call */
- final static int EINTR=4;
- /** I/O error */
- final static int EIO=5;
- /** No such device or address */
- final static int ENXIO=6;
- /** Argument list too long */
- final static int E2BIG=7;
- /** Exec format error */
- final static int ENOEXEC=8;
- /** Bad file number */
- final static int EBADF=9;
- /** No child processes */
- final static int ECHILD=10;
- /** Try again */
- final static int EAGAIN=11;
- /** Out of memory */
- final static int ENOMEM=12;
- /** Permission denied */
- final static int EACCES=13;
- /** Bad address */
- final static int EFAULT=14;
- /** Block device required */
- final static int ENOTBLK=15;
- /** Device or resource busy */
- final static int EBUSY=16;
- /** File exists */
- final static int EEXIST=17;
- /** Cross-device link */
- final static int EXDEV=18;
- /** No such device */
- final static int ENODEV=19;
- /** Not a directory */
- final static int ENOTDIR=20;
- /** Is a directory */
- final static int EISDIR=21;
- /** Invalid argument */
- final static int EINVAL=22;
- /** File table overflow */
- final static int ENFILE=23;
- /** Too many open files */
- final static int EMFILE=24;
- /** Not a typewriter */
- final static int ENOTTY=25;
- /** Text file busy */
- final static int ETXTBSY=26;
- /** File too large */
- final static int EFBIG=27;
- /** No space left on device */
- final static int ENOSPC=28;
- /** Illegal seek */
- final static int ESPIPE=29;
- /** Read-only file system */
- final static int EROFS=30;
- /** Too many links */
- final static int EMLINK=31;
- /** Broken pipe */
- final static int EPIPE=32;
- /** Math argument out of domain of func */
- final static int EDOM=33;
- /** Math result not representable */
- final static int ERANGE=34;
-
- /** Resource deadlock would occur */
- final static int EDEADLK=35;
- final static int EDEADLOCK=EDEADLK;
- /** File name too long */
- final static int ENAMETOOLONG=36;
- /** No record locks available */
- final static int ENOLCK=37;
- /** Function not implemented */
- final static int ENOSYS=38;
- /** Directory not empty */
- final static int ENOTEMPTY=39;
- /** Too many symbolic links encountered */
- final static int ELOOP=40;
- /** Operation would block */
- final static int EWOULDBLOCK=EAGAIN;
- /** No message of desired type */
- final static int ENOMSG=42;
- /** Identifier removed */
- final static int EIDRM=43;
- /** Channel number out of range */
- final static int ECHRNG=44;
- /** Level 2 not synchronized */
- final static int EL2NSYNC=45;
- /** Level 3 halted */
- final static int EL3HLT=46;
- /** Level 3 reset */
- final static int EL3RST=47;
- /** Link number out of range */
- final static int ELNRNG=48;
- /** Protocol driver not attached */
- final static int EUNATCH=49;
- /** No CSI structure available */
- final static int ENOCSI=50;
- /** Level 2 halted */
- final static int EL2HLT=51;
- /** Invalid exchange */
- final static int EBADE=52;
- /** Invalid request descriptor */
- final static int EBADR=53;
- /** Exchange full */
- final static int EXFULL=54;
- /** No anode */
- final static int ENOANO=55;
- /** Invalid request code */
- final static int EBADRQC=56;
- /** Invalid slot */
- final static int EBADSLT=57;
-
- /** Bad font file format */
- final static int EBFONT=59;
- /** Device not a stream */
- final static int ENOSTR=60;
- /** No data available */
- final static int ENODATA=61;
- /** Timer expired */
- final static int ETIME=62;
- /** Out of streams resources */
- final static int ENOSR=63;
- /** Machine is not on the network */
- final static int ENONET=64;
- /** Package not installed */
- final static int ENOPKG=65;
- /** Object is remote */
- final static int EREMOTE=66;
- /** Link has been severed */
- final static int ENOLINK=67;
- /** Advertise error */
- final static int EADV=68;
- /** Srmount error */
- final static int ESRMNT=69;
- /** Communication error on send */
- final static int ECOMM=70;
- /** Protocol error */
- final static int EPROTO=71;
- /** Multihop attempted */
- final static int EMULTIHOP=72;
- /** RFS specific error */
- final static int EDOTDOT=73;
- /** Not a data message */
- final static int EBADMSG=74;
- /** Value too large for defined data type */
- final static int EOVERFLOW=75;
- /** Name not unique on network */
- final static int ENOTUNIQ=76;
- /** File descriptor in bad state */
- final static int EBADFD=77;
- /** Remote address changed */
- final static int EREMCHG=78;
- /** Can not access a needed shared library */
- final static int ELIBACC=79;
- /** Accessing a corrupted shared library */
- final static int ELIBBAD=80;
- /** .lib section in a.out corrupted */
- final static int ELIBSCN=81;
- /** Attempting to link in too many shared libraries */
- final static int ELIBMAX=82;
- /** Cannot exec a shared library directly */
- final static int ELIBEXEC=83;
- /** Illegal byte sequence */
- final static int EILSEQ=84;
- /** Interrupted system call should be restarted */
- final static int ERESTART=85;
- /** Streams pipe error */
- final static int ESTRPIPE=86;
- /** Too many users */
- final static int EUSERS=87;
- /** Socket operation on non-socket */
- final static int ENOTSOCK=88;
- /** Destination address required */
- final static int EDESTADDRREQ=89;
- /** Message too long */
- final static int EMSGSIZE=90;
- /** Protocol wrong type for socket */
- final static int EPROTOTYPE=91;
- /** Protocol not available */
- final static int ENOPROTOOPT=92;
- /** Protocol not supported */
- final static int EPROTONOSUPPORT=93;
- /** Socket type not supported */
- final static int ESOCKTNOSUPPORT=94;
- /** Operation not supported on transport endpoint */
- final static int EOPNOTSUPP=95;
- /** Protocol family not supported */
- final static int EPFNOSUPPORT=96;
- /** Address family not supported by protocol */
- final static int EAFNOSUPPORT=97;
- /** Address already in use */
- final static int EADDRINUSE=98;
- /** Cannot assign requested address */
- final static int EADDRNOTAVAIL=99;
- /** Network is down */
- final static int ENETDOWN=100;
- /** Network is unreachable */
- final static int ENETUNREACH=101;
- /** Network dropped connection because of reset */
- final static int ENETRESET=102;
- /** Software caused connection abort */
- final static int ECONNABORTED=103;
- /** Connection reset by peer */
- final static int ECONNRESET=104;
- /** No buffer space available */
- final static int ENOBUFS=105;
- /** Transport endpoint is already connected */
- final static int EISCONN=106;
- /** Transport endpoint is not connected */
- final static int ENOTCONN=107;
- /** Cannot send after transport endpoint shutdown */
- final static int ESHUTDOWN=108;
- /** Too many references: cannot splice */
- final static int ETOOMANYREFS=109;
- /** Connection timed out */
- final static int ETIMEDOUT=110;
- /** Connection refused */
- final static int ECONNREFUSED=111;
- /** Host is down */
- final static int EHOSTDOWN=112;
- /** No route to host */
- final static int EHOSTUNREACH=113;
- /** Operation already in progress */
- final static int EALREADY=114;
- /** Operation now in progress */
- final static int EINPROGRESS=115;
- /** Stale NFS file handle */
- final static int ESTALE=116;
- /** Structure needs cleaning */
- final static int EUCLEAN=117;
- /** Not a XENIX named type file */
- final static int ENOTNAM=118;
- /** No XENIX semaphores available */
- final static int ENAVAIL=119;
- /** Is a named type file */
- final static int EISNAM=120;
- /** Remote I/O error */
- final static int EREMOTEIO=121;
- /** Quota exceeded */
- final static int EDQUOT=122;
-
- /** No medium found */
- final static int ENOMEDIUM=123;
- /** Wrong medium type */
- final static int EMEDIUMTYPE=124;
- /** Operation Canceled */
- final static int ECANCELED=125;
- /** Required key not available */
- final static int ENOKEY=126;
- /** Key has expired */
- final static int EKEYEXPIRED=127;
- /** Key has been revoked */
- final static int EKEYREVOKED=128;
- /** Key was rejected by service */
- final static int EKEYREJECTED=129;
-
- /** Owner died */
- final static int EOWNERDEAD=130;
- /** State not recoverable */
- final static int ENOTRECOVERABLE=131;
- }
-
- /**
- * Class capturing file control (fcntl) constants
- */
- private final static class fcntl {
- public final static int O_RDONLY = 0;
- public final static int O_WRONLY = 1;
- public final static int O_RDWR = 2;
- public final static int O_CREAT = 0100;
- public final static int O_EXCL = 0200;
- public final static int O_NOCTTY = 0400;
- public final static int O_TRUNC = 01000;
- public final static int O_APPEND = 02000;
- public final static int O_NONBLOCK = 04000;
- }
-
- /**
- * Class capturing memory management constants
- */
- private final static class mman {
- /** Page can be read */
- public final static int PROT_READ=0x1;
- /** Page can be written */
- public final static int PROT_WRITE=0x2;
- /** Page can be executed */
- public final static int PROT_EXEC=0x4;
-
- /** Don't use a file */
- public final static int MAP_ANONYMOUS=0x20;
- }
- /*
- * Local classes
- */
-
- /**
- * Define the system call interface
- */
- public abstract class SystemCall {
- /**
- * Handle a system call
- */
- public abstract void doSysCall();
- }
-
- /**
- * Unknown System Call
- */
- private class UnknownSystemCall extends SystemCall {
- /**
- * Handle a system call
- */
- public void doSysCall() {
- if (!DBT_Options.unimplementedSystemCallsFatal) {
- src.setSysCallError(errno.ENOSYS);
- }
- else {
- throw new Error("System Call " + sysCallToString(src.getSysCallNumber()) + " Unknown");
- }
- }
- }
-
- /**
- * Exit system call
- */
- public class SysExit extends SystemCall {
- public void doSysCall() {
- int status = arguments.nextInt();
- System.exit(status);
- }
- }
-
- /**
- * Read from a file
- */
- public class SysRead extends SystemCall {
- public void doSysCall() {
- int fd = arguments.nextInt();
- int buf = arguments.nextInt();
- int count = arguments.nextInt();
-
- Memory mem = src.getProcessSpace().memory;
-
- if(fd == 0) { // read from stdin
- byte[] b = new byte[256];
- try {
- int len = System.in.read(b);
- for (int i=0; i < len; i++) {
- mem.store32(buf + i, b[i]);
- }
- src.setSysCallReturn(len);
- }
- catch(IOException e) {
- src.setSysCallError(errno.EIO);
- //cr |= PPC_errno.CR0_SO;
- }
- }
- else {
- RandomAccessFile raFile = getRAFile(fd);
- if(raFile == null) {
- src.setSysCallError(errno.EBADF);
- } else {
- // Where to put the data
- int addr = buf;
- // Copy from file into buffer.
- int b = 0; // Number of bytes read.
- int i;
- try {
- while((b < count) && ((i = raFile.read()) != -1)) {
- byte by = (byte)i;
- b++;
- mem.store8(addr++, by);
- }
- src.setSysCallReturn(b); // Return number of bytes read.
- }
- catch(IOException e) {
- src.setSysCallReturn(errno.EIO);
- }
- }
- }
- }
- }
-
- /**
- * Write to a file
- */
- public class SysWrite extends SystemCall {
- public void doSysCall() {
- int fd = arguments.nextInt();
- int buf = arguments.nextInt();
- int count = arguments.nextInt();
-
- Memory mem = src.getProcessSpace().memory;
-
- if(fd == 1) { // stdout
- for(int c = 0 ; c < count; c++) {
- System.out.print((char) mem.loadUnsigned8(buf + c));
- }
- src.setSysCallReturn(count);
- } else if(fd == 2) { // sterr
- for(int c = 0 ; c < count ; c++) {
- System.err.print((char) mem.loadUnsigned8(buf + c));
- }
- src.setSysCallReturn(count);
- } else {
- // Check that fd is a valid file descriptor.
- RandomAccessFile raFile = getRAFile(fd);
- if(raFile == null) {
- src.setSysCallReturn(errno.EBADF);
- } else {
- // Where to get the data.
- int addr = buf;
-
- // Copy from buffer into file.
- int b; // Number of bytes written.
- byte by;
-
- try {
- for(b = 1 ; b <= count ; b++) {
- by = (byte) mem.loadUnsigned8(addr++);
- raFile.write(by);
- }
- // Return number of bytes written, having accounted for b
- // being incremented once too many at the end of the
- // writing
- src.setSysCallReturn(b-1);
- }
- catch(IOException e) {
- src.setSysCallReturn(errno.EIO);
- }
- }
- }
- }
- }
-
- /**
- * Write data into multiple buffers
- */
- public class SysWriteV extends SystemCall {
- public void doSysCall() {
- int fd = arguments.nextInt();
- int vector = arguments.nextInt();
- int count = arguments.nextInt();
- Memory mem = src.getProcessSpace().memory;
-
- if((fd == 1)||(fd == 2)) { // stdout || stderr
- PrintStream out = (fd == 1) ? System.out : System.err;
- int base = mem.load32(vector);
- int len = mem.load32(vector+4);
- int currentVector = 0;
- int curVectorPos = 0;
- for(int c = 0 ; c < count; c++) {
- if(curVectorPos == len) {
- currentVector++;
- base = mem.load32(vector+(currentVector*8));
- len = mem.load32(vector+(currentVector*8)+4);
- curVectorPos = 0;
- }
- out.print((char) mem.loadUnsigned8(base + curVectorPos));
- curVectorPos++;
- }
- src.setSysCallReturn(count);
- } else {
- try {
- RandomAccessFile out = getRAFile(fd);
- int base = mem.load32(vector);
- int len = mem.load32(vector+4);
- int currentVector = 0;
- int curVectorPos = 0;
- for(int c = 0 ; c < count; c++) {
- if(curVectorPos == len) {
- currentVector++;
- base = mem.load32(vector+(currentVector*8));
- len = mem.load32(vector+(currentVector*8)+4);
- curVectorPos = 0;
- }
- out.write((int)mem.loadUnsigned8(base + curVectorPos));
- curVectorPos++;
- }
- src.setSysCallReturn(count);
- } catch(IOException e) {
- throw new Error("TODO - set error correctly", e);
- }
- }
- }
- }
-
- public class SysOpen extends SystemCall {
- public void doSysCall() {
- int pathname = arguments.nextInt();
- int flags = arguments.nextInt();
-
- // Examine the flags argument and open read or read-write
- // accordingly. args[0] points to the file name.
- String fileName = memoryReadString(pathname);
-
- // Create a File object so we can test for the existance and
- // properties of the file.
- File testFile = new File(fileName);
-
- if(((flags & fcntl.O_CREAT) != 0) &&
- ((flags & fcntl.O_EXCL) != 0) &&
- testFile.exists()) {
- // O_CREAT specified. If O_EXCL also specified, we require
- // that the file does not already exist
- src.setSysCallError(errno.EEXIST);
- }
- else if(((flags & fcntl.O_CREAT) != 0) && !testFile.exists()) {
- // O_CREAT not specified. We require that the file exists.
- src.setSysCallError(errno.ENOENT);
- }
- else {
- // we have not found an error, so we go ahead and try to open the file
- try {
- RandomAccessFile raFile;
- if((flags & 0x3) == fcntl.O_RDONLY) {
- raFile = new RandomAccessFile(fileName, "r");
- }
- else {
- // NB Java RandomAccessFile has no write only
- raFile = new RandomAccessFile(fileName, "rw");
- }
- src.setSysCallReturn(appendRAFile(raFile));
- }
- catch(FileNotFoundException e) {
- throw new Error("File not found: " + fileName + " " + e);
- }
- }
- // NOT YET HANDLING ALL THE flags OPTIONS (IW have included
- // TRUNC & APPEND but not properly!)
- if((flags & ~(fcntl.O_WRONLY | fcntl.O_RDWR | fcntl.O_CREAT | fcntl.O_EXCL | fcntl.O_TRUNC |
- fcntl.O_APPEND | fcntl.O_NOCTTY | fcntl.O_NONBLOCK)) != 0) {
- throw new Error("Not yet implemented option to sys_open. 0" + Integer.toString(flags,8) +
- " flag 0" + Integer.toString(flags & ~(fcntl.O_WRONLY | fcntl.O_RDWR | fcntl.O_CREAT |
- fcntl.O_EXCL | fcntl.O_TRUNC | fcntl.O_APPEND | fcntl.O_NOCTTY | fcntl.O_NONBLOCK),8));
- }
- }
- }
-
- public class SysClose extends SystemCall {
- public void doSysCall() {
- int fd = arguments.nextInt();
- RandomAccessFile raFile = getRAFile(fd);
- // Check that fd is a valid file descriptor
- if(raFile == null) {
- src.setSysCallError(errno.EBADF);
- } else {
- try {
- raFile.close();
-
- src.setSysCallReturn(0); // return success code
- } catch(IOException e) {
- src.setSysCallReturn(errno.EIO);
- //cr |= PPC_errno.CR0_SO;
- }
- }
- }
- }
-
- public class SysGetEUID extends SystemCall {
- public void doSysCall() {
- src.setSysCallReturn(DBT_Options.UID);
- }
- }
-
- public class SysGetUID extends SystemCall {
- public void doSysCall() {
- src.setSysCallReturn(DBT_Options.UID);
- }
- }
-
- public class SysGetEGID extends SystemCall {
- public void doSysCall() {
- src.setSysCallReturn(DBT_Options.GID);
- }
- }
-
- public class SysGetGID extends SystemCall {
- public void doSysCall() {
- src.setSysCallReturn(DBT_Options.GID);
- }
- }
-
- public class SysBrk extends SystemCall {
- public void doSysCall() {
- int brk = arguments.nextInt();
- if(brk != 0) {
- // Request to set the current top of bss.
- src.setBrk(brk);
- }
- src.setSysCallReturn(src.getBrk());
- }
- }
-
- public class SysFstat64 extends SystemCall {
- public void doSysCall() {
- int fd = arguments.nextInt();
-
- LinuxStructureFactory.stat64 buf = structures.new_stat64();
-
- if (fd == 1) {
- buf.st_mode = 0x2180;
- buf.st_rdev = (short)0x8800;
- buf.__st_ino = buf.st_ino = 2;
- buf.st_blksize = 0x400;
- }
- else
- throw new RuntimeException("Unimplemented system call.");
-
- buf.write(src.getProcessSpace().memory, arguments.nextInt());
- src.setSysCallReturn(0);
- }
- }
-
- public class SysFcntl64 extends SystemCall {
- public void doSysCall() {
- // This is complicated so fudge it for now.
- int fd = arguments.nextInt();
- int cmd = arguments.nextInt();
-
- if( ((fd == 0) || (fd == 1) || (fd == 2)) && (cmd == 1) )
- src.setSysCallReturn(0);
- else
- throw new Error("Unrecognised system call.");
- }
- }
-
- public class SysUname extends SystemCall {
- public void doSysCall() {
- // Simple uname support
- int addr = arguments.nextInt();
-
- if (addr != 0) {
- String localhostString, domainName, hostName;
- try {
- InetAddress localhost = InetAddress.getLocalHost();
- localhostString = localhost.getHostName();
- }
- catch (UnknownHostException e) {
- localhostString = "localhost.localdomain";
- }
- int index = localhostString.indexOf('.');
- if (index == -1) {
- domainName = null;
- hostName = localhostString;
- }
- else {
- domainName = localhostString.substring(index + 1);
- hostName = localhostString.substring(0,index);
- }
- // Fill in utsname struct - see /usr/include/sys/utsname.h
- memoryWriteString (addr, getSysName()); // sysname
- memoryWriteString (addr+65, hostName); // nodename
- memoryWriteString (addr+130, getRelease()); // release
- memoryWriteString (addr+195, getVersion()); // version
- memoryWriteString (addr+260, getMachine()); // machine
- memoryWriteString (addr+325, domainName); // __domainname
- src.setSysCallReturn(0);
- }
- else {
- // attempt to write to address 0
- src.setSysCallError(errno.EFAULT);
- }
- }
- }
-
- public class SysMmap extends SystemCall {
- public void doSysCall() {
-
- int start = arguments.nextInt();
- int length = arguments.nextInt();
- int prot = arguments.nextInt();
- int flags = arguments.nextInt();
- int fd = arguments.nextInt();
- int offset = arguments.nextInt();
- if((flags & mman.MAP_ANONYMOUS) != 0 ) {
- try {
- Memory mem = src.getProcessSpace().memory;
-
- src.setSysCallReturn( mem.map(start, length,
- (prot & mman.PROT_READ) != 0,
- (prot & mman.PROT_WRITE) != 0,
- (prot & mman.PROT_EXEC) != 0));
- }
- catch (MemoryMapException e) {
- throw new Error("Error in mmap", e);
- }
- } else {
- throw new Error("Non-anonymous sys_mmap not yet implemented.");
- }
- }
- }
-
- public class SysMunmap extends SystemCall {
- public void doSysCall() {
-
- int start = arguments.nextInt();
- int length = arguments.nextInt();
-
- src.getProcessSpace().memory.unmap(start, length);
- src.setSysCallReturn(0);
- }
- }
-
- public class SysExitGroup extends SystemCall {
- public void doSysCall() {
- // For now, equivalent to SysExit
- System.exit(arguments.nextInt());
- }
- }
-}
+/*
+ * This file is part of binarytranslator.org. The binarytranslator.org
+ * project is distributed under the Common Public License (CPL).
+ * A copy of the license is included in the distribution, and is also
+ * available at http://www.opensource.org/licenses/cpl1.0.php
+ *
+ * (C) Copyright Ian Rogers, The University of Manchester 2003-2006
+ */
+package org.binarytranslator.generic.os.abi.linux;
+
+import org.binarytranslator.DBT_Options;
+import org.binarytranslator.generic.memory.Memory;
+import org.binarytranslator.generic.memory.MemoryMapException;
+import org.binarytranslator.generic.os.abi.linux.files.ConsoleIn;
+import org.binarytranslator.generic.os.abi.linux.files.ConsoleOut;
+import org.binarytranslator.generic.os.abi.linux.files.HostFile;
+import org.binarytranslator.generic.os.abi.linux.files.OpenFile;
+import org.binarytranslator.generic.os.abi.linux.files.OpenFileList;
+import org.binarytranslator.generic.os.abi.linux.files.ReadableFile;
+import org.binarytranslator.generic.os.abi.linux.files.WriteableFile;
+import org.binarytranslator.generic.os.abi.linux.files.OpenFileList.InvalidFileDescriptor;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+/**
+ * Linux system call handling class
+ */
+abstract public class LinuxSystemCalls {
+ /**
+ * The source of the system calls
+ */
+ protected LinuxSystemCallGenerator src;
+
+ /** Allows access to the system call's arguments */
+ protected LinuxSystemCallGenerator.CallArgumentIterator arguments;
+
+ /** Allows access to a number of operating-system specific structures. */
+ protected LinuxStructureFactory structures;
+
+ /** List of currently opened files. */
+ private OpenFileList openFiles;
+
+ /**
+ * Maximum number of system calls
+ */
+ private static final int MAX_SYSCALLS = 294;
+
+ /**
+ * Array to de-multiplex Linux system calls. NB we will have to
+ * handle IA32 call gates entry at some point
+ */
+ protected SystemCall systemCallTable[];
+
+ /**
+ * The name for this system given by uname
+ */
+ protected String getSysName() {
+ return "Linux";
+ }
+ /**
+ * The release for this system given by uname
+ */
+ protected String getRelease() {
+ return "2.6.13";
+ }
+ /**
+ * The version for this system given by uname
+ */
+ protected String getVersion() {
+ return "#1";
+ }
+ /**
+ * The machine for this system given by uname
+ */
+ protected abstract String getMachine();
+
+
+ /**
+ * Load an ASCIIZ string from the memory of the system call
+ * generator and return it as a Java String.
+ * @param address where to read
+ * @return the String read
+ */
+ private String memoryReadString(int address) {
+ Memory m = src.getProcessSpace().memory;
+
+ StringBuffer str = new StringBuffer();
+ char c;
+
+ while ((c = (char) m.loadUnsigned8(address++)) != 0)
+ str.append(c);
+
+ return str.toString();
+ }
+
+ /**
+ * Store an ASCIIZ string to the memory of the system call generator
+ * @param address where to read
+ * @param data the String to write
+ */
+ public void memoryWriteString(int address, String data) {
+ Memory m = src.getProcessSpace().memory;
+
+ if (data != null) {
+ for (int i = 0; i < data.length(); i++) {
+ m.store8(address + i, (byte) data.charAt(i));
+ }
+
+ m.store8(address + data.length(), (byte) 0);
+ }
+ }
+
+ /**
+ * Constructor
+ */
+ public LinuxSystemCalls(LinuxSystemCallGenerator src) {
+ this.src = src;
+ systemCallTable = new SystemCall[MAX_SYSCALLS];
+ UnknownSystemCall USC = new UnknownSystemCall();
+ for(int i=0; i < MAX_SYSCALLS; i++) {
+ systemCallTable[i] = USC;
+ }
+
+ openFiles = new OpenFileList();
+
+ if (openFiles.open(new ConsoleIn(), 0) != 0 ||
+ openFiles.open(new ConsoleOut(System.out), 1) != 1 ||
+ openFiles.open(new ConsoleOut(System.err), 2) != 2) {
+
+ throw new RuntimeException("File descriptors for standard streams could not be assigned correctly.");
+ }
+
+ structures = new LinuxStructureFactory();
+ }
+
+ /**
+ * Handle a system call
+ * @param src the system call generator
+ */
+ public void doSysCall() {
+ int sysCallNumber = src.getSysCallNumber();
+ System.err.println("Syscall "+ sysCallToString(sysCallNumber));
+ arguments = src.getSysCallArguments();
+ systemCallTable[sysCallNumber].doSysCall();
+ }
+
+ /**
+ * Turn the given system call number into a string describing its
+ * function
+ */
+ abstract public String sysCallToString(int syscall);
+
+ /**
+ * Class capturing errno constants
+ */
+ private final static class errno {
+ /** Operation not permitted */
+ final static int EPERM=1;
+ /** No such file or directory */
+ final static int ENOENT=2;
+ /** No such process */
+ final static int ESRCH=3;
+ /** Interrupted system call */
+ final static int EINTR=4;
+ /** I/O error */
+ final static int EIO=5;
+ /** No such device or address */
+ final static int ENXIO=6;
+ /** Argument list too long */
+ final static int E2BIG=7;
+ /** Exec format error */
+ final static int ENOEXEC=8;
+ /** Bad file number */
+ final static int EBADF=9;
+ /** No child processes */
+ final static int ECHILD=10;
+ /** Try again */
+ final static int EAGAIN=11;
+ /** Out of memory */
+ final static int ENOMEM=12;
+ /** Permission denied */
+ final static int EACCES=13;
+ /** Bad address */
+ final static int EFAULT=14;
+ /** Block device required */
+ final static int ENOTBLK=15;
+ /** Device or resource busy */
+ final static int EBUSY=16;
+ /** File exists */
+ final static int EEXIST=17;
+ /** Cross-device link */
+ final static int EXDEV=18;
+ /** No such device */
+ final static int ENODEV=19;
+ /** Not a directory */
+ final static int ENOTDIR=20;
+ /** Is a directory */
+ final static int EISDIR=21;
+ /** Invalid argument */
+ final static int EINVAL=22;
+ /** File table overflow */
+ final static int ENFILE=23;
+ /** Too many open files */
+ final static int EMFILE=24;
+ /** Not a typewriter */
+ final static int ENOTTY=25;
+ /** Text file busy */
+ final static int ETXTBSY=26;
+ /** File too large */
+ final static int EFBIG=27;
+ /** No space left on device */
+ final static int ENOSPC=28;
+ /** Illegal seek */
+ final static int ESPIPE=29;
+ /** Read-only file system */
+ final static int EROFS=30;
+ /** Too many links */
+ final static int EMLINK=31;
+ /** Broken pipe */
+ final static int EPIPE=32;
+ /** Math argument out of domain of func */
+ final static int EDOM=33;
+ /** Math result not representable */
+ final static int ERANGE=34;
+
+ /** Resource deadlock would occur */
+ final static int EDEADLK=35;
+ final static int EDEADLOCK=EDEADLK;
+ /** File name too long */
+ final static int ENAMETOOLONG=36;
+ /** No record locks available */
+ final static int ENOLCK=37;
+ /** Function not implemented */
+ final static int ENOSYS=38;
+ /** Directory not empty */
+ final static int ENOTEMPTY=39;
+ /** Too many symbolic links encountered */
+ final static int ELOOP=40;
+ /** Operation would block */
+ final static int EWOULDBLOCK=EAGAIN;
+ /** No message of desired type */
+ final static int ENOMSG=42;
+ /** Identifier removed */
+ final static int EIDRM=43;
+ /** Channel number out of range */
+ final static int ECHRNG=44;
+ /** Level 2 not synchronized */
+ final static int EL2NSYNC=45;
+ /** Level 3 halted */
+ final static int EL3HLT=46;
+ /** Level 3 reset */
+ final static int EL3RST=47;
+ /** Link number out of range */
+ final static int ELNRNG=48;
+ /** Protocol driver not attached */
+ final static int EUNATCH=49;
+ /** No CSI structure available */
+ final static int ENOCSI=50;
+ /** Level 2 halted */
+ final static int EL2HLT=51;
+ /** Invalid exchange */
+ final static int EBADE=52;
+ /** Invalid request descriptor */
+ final static int EBADR=53;
+ /** Exchange full */
+ final static int EXFULL=54;
+ /** No anode */
+ final static int ENOANO=55;
+ /** Invalid request code */
+ final static int EBADRQC=56;
+ /** Invalid slot */
+ final static int EBADSLT=57;
+
+ /** Bad font file format */
+ final static int EBFONT=59;
+ /** Device not a stream */
+ final static int ENOSTR=60;
+ /** No data available */
+ final static int ENODATA=61;
+ /** Timer expired */
+ final static int ETIME=62;
+ /** Out of streams resources */
+ final static int ENOSR=63;
+ /** Machine is not on the network */
+ final static int ENONET=64;
+ /** Package not installed */
+ final static int ENOPKG=65;
+ /** Object is remote */
+ final static int EREMOTE=66;
+ /** Link has been severed */
+ final static int ENOLINK=67;
+ /** Advertise error */
+ final static int EADV=68;
+ /** Srmount error */
+ final static int ESRMNT=69;
+ /** Communication error on send */
+ final static int ECOMM=70;
+ /** Protocol error */
+ final static int EPROTO=71;
+ /** Multihop attempted */
+ final static int EMULTIHOP=72;
+ /** RFS specific error */
+ final static int EDOTDOT=73;
+ /** Not a data message */
+ final static int EBADMSG=74;
+ /** Value too large for defined data type */
+ final static int EOVERFLOW=75;
+ /** Name not unique on network */
+ final static int ENOTUNIQ=76;
+ /** File descriptor in bad state */
+ final static int EBADFD=77;
+ /** Remote address changed */
+ final static int EREMCHG=78;
+ /** Can not access a needed shared library */
+ final static int ELIBACC=79;
+ /** Accessing a corrupted shared library */
+ final static int ELIBBAD=80;
+ /** .lib section in a.out corrupted */
+ final static int ELIBSCN=81;
+ /** Attempting to link in too many shared libraries */
+ final static int ELIBMAX=82;
+ /** Cannot exec a shared library directly */
+ final static int ELIBEXEC=83;
+ /** Illegal byte sequence */
+ final static int EILSEQ=84;
+ /** Interrupted system call should be restarted */
+ final static int ERESTART=85;
+ /** Streams pipe error */
+ final static int ESTRPIPE=86;
+ /** Too many users */
+ final static int EUSERS=87;
+ /** Socket operation on non-socket */
+ final static int ENOTSOCK=88;
+ /** Destination address required */
+ final static int EDESTADDRREQ=89;
+ /** Message too long */
+ final static int EMSGSIZE=90;
+ /** Protocol wrong type for socket */
+ final static int EPROTOTYPE=91;
+ /** Protocol not available */
+ final static int ENOPROTOOPT=92;
+ /** Protocol not supported */
+ final static int EPROTONOSUPPORT=93;
+ /** Socket type not supported */
+ final static int ESOCKTNOSUPPORT=94;
+ /** Operation not supported on transport endpoint */
+ final static int EOPNOTSUPP=95;
+ /** Protocol family not supported */
+ final static int EPFNOSUPPORT=96;
+ /** Address family not supported by protocol */
+ final static int EAFNOSUPPORT=97;
+ /** Address already in use */
+ final static int EADDRINUSE=98;
+ /** Cannot assign requested address */
+ final static int EADDRNOTAVAIL=99;
+ /** Network is down */
+ final static int ENETDOWN=100;
+ /** Network is unreachable */
+ final static int ENETUNREACH=101;
+ /** Network dropped connection because of reset */
+ final static int ENETRESET=102;
+ /** Software caused connection abort */
+ final static int ECONNABORTED=103;
+ /** Connection reset by peer */
+ final static int ECONNRESET=104;
+ /** No buffer space available */
+ final static int ENOBUFS=105;
+ /** Transport endpoint is already connected */
+ final static int EISCONN=106;
+ /** Transport endpoint is not connected */
+ final static int ENOTCONN=107;
+ /** Cannot send after transport endpoint shutdown */
+ final static int ESHUTDOWN=108;
+ /** Too many references: cannot splice */
+ final static int ETOOMANYREFS=109;
+ /** Connection timed out */
+ final static int ETIMEDOUT=110;
+ /** Connection refused */
+ final static int ECONNREFUSED=111;
+ /** Host is down */
+ final static int EHOSTDOWN=112;
+ /** No route to host */
+ final static int EHOSTUNREACH=113;
+ /** Operation already in progress */
+ final static int EALREADY=114;
+ /** Operation now in progress */
+ final static int EINPROGRESS=115;
+ /** Stale NFS file handle */
+ final static int ESTALE=116;
+ /** Structure needs cleaning */
+ final static int EUCLEAN=117;
+ /** Not a XENIX named type file */
+ final static int ENOTNAM=118;
+ /** No XENIX semaphores available */
+ final static int ENAVAIL=119;
+ /** Is a named type file */
+ final static int EISNAM=120;
+ /** Remote I/O error */
+ final static int EREMOTEIO=121;
+ /** Quota exceeded */
+ final static int EDQUOT=122;
+
+ /** No medium found */
+ final static int ENOMEDIUM=123;
+ /** Wrong medium type */
+ final static int EMEDIUMTYPE=124;
+ /** Operation Canceled */
+ final static int ECANCELED=125;
+ /** Required key not available */
+ final static int ENOKEY=126;
+ /** Key has expired */
+ final static int EKEYEXPIRED=127;
+ /** Key has been revoked */
+ final static int EKEYREVOKED=128;
+ /** Key was rejected by service */
+ final static int EKEYREJECTED=129;
+
+ /** Owner died */
+ final static int EOWNERDEAD=130;
+ /** State not recoverable */
+ final static int ENOTRECOVERABLE=131;
+ }
+
+ /**
+ * Class capturing file control (fcntl) constants
+ */
+ private final static class fcntl {
+ public final static int O_RDONLY = 0;
+ public final static int O_WRONLY = 1;
+ public final static int O_RDWR = 2;
+ public final static int O_CREAT = 0100;
+ public final static int O_EXCL = 0200;
+ public final static int O_NOCTTY = 0400;
+ public final static int O_TRUNC = 01000;
+ public final static int O_APPEND = 02000;
+ public final static int O_NONBLOCK = 04000;
+ }
+
+ /**
+ * Class capturing memory management constants
+ */
+ private final static class mman {
+ /** Page can be read */
+ public final static int PROT_READ=0x1;
+ /** Page can be written */
+ public final static int PROT_WRITE=0x2;
+ /** Page can be executed */
+ public final static int PROT_EXEC=0x4;
+ /** Map pages that are shared between processes */
+ public final static int MAP_SHARED = 0x1;
+ /** Map pages without sharing them */
+ public final static int MAP_PRIVATE = 0x2;
+ /** Don't use a file */
+ public final static int MAP_ANONYMOUS=0x20;
+ }
+
+ /**
+ * Define the system call interface
+ */
+ public abstract class SystemCall {
+ /**
+ * Handle a system call
+ */
+ public abstract void doSysCall();
+ }
+
+ /**
+ * Unknown System Call
+ */
+ private class UnknownSystemCall extends SystemCall {
+ /**
+ * Handle a system call
+ */
+ public void doSysCall() {
+ if (!DBT_Options.unimplementedSystemCallsFatal) {
+ src.setSysCallError(errno.ENOSYS);
+ }
+ else {
+ throw new Error("System Call " + sysCallToString(src.getSysCallNumber()) + " Unknown");
+ }
+ }
+ }
+
+ /**
+ * Exit system call
+ */
+ public class SysExit extends SystemCall {
+ public void doSysCall() {
+ int status = arguments.nextInt();
+ System.exit(status);
+ }
+ }
+
+ /**
+ * Read from a file
+ */
+ public class SysRead extends SystemCall {
+ public void doSysCall() {
+ int fd = arguments.nextInt();
+ int buf = arguments.nextInt();
+ int count = arguments.nextInt();
+
+ Memory mem = src.getProcessSpace().memory;
+
+ try {
+ //get the file from the file descriptor table
+ ReadableFile file = openFiles.getRead(fd);
+ byte[] buffer = new byte[count];
+
+ //try to fill the buffer from the file
+ int readBytes = file.read(buffer);
+
+ //copy the filled buffer into the memory
+ for (int i = 0; i < readBytes; i++)
+ mem.store8(buf++, buffer[i]);
+
+ src.setSysCallReturn(readBytes);
+ }
+ catch (InvalidFileDescriptor e) {
+ src.setSysCallError(errno.EBADF);
+ }
+ catch (Exception e) {
+ src.setSysCallError(errno.EIO);
+ }
+ }
+ }
+
+ /**
+ * Write to a file
+ */
+ public class SysWrite extends SystemCall {
+ public void doSysCall() {
+ int fd = arguments.nextInt();
+ int buf = arguments.nextInt();
+ int count = arguments.nextInt();
+
+ Memory mem = src.getProcessSpace().memory;
+
+ try {
+ //get the file from the file descriptor table
+ WriteableFile file = openFiles.getWrite(fd);
+
+ //load the supplied buffer from memory
+ byte[] buffer = new byte[count];
+ for (int i = 0; i < count; i++)
+ buffer[i] = (byte)mem.loadUnsigned8(buf++);
+
+ //write that buffer to the file
+ file.write(buffer);
+ src.setSysCallReturn(count);
+ }
+ catch (InvalidFileDescriptor e) {
+ src.setSysCallError(errno.EBADF);
+ }
+ catch (Exception e) {
+ src.setSysCallError(errno.EIO);
+ }
+ }
+ }
+
+ /**
+ * Write data into multiple buffers
+ */
+ public class SysWriteV extends SystemCall {
+ public void doSysCall() {
+ int fd = arguments.nextInt();
+ int vector = arguments.nextInt();
+ int count = arguments.nextInt();
+ Memory mem = src.getProcessSpace().memory;
+
+ try {
+ //get the file from the file descriptor table
+ WriteableFile file = openFiles.getWrite(fd);
+ int bytesWritten = 0;
+
+ //for each of the supplied buffers...
+ for (int n = 0; n < count; n++) {
+ //get the base address & length for the current buffer
+ int base = mem.load32(vector);
+ int len = mem.load32(vector + 4);
+ vector += 8;
+
+ //read the buffer from memory
+ byte[] buffer = new byte[len];
+ for (int i = 0; i < count; i++)
+ buffer[i] = (byte)mem.loadUnsigned8(base + i);
+
+ //and write it to the file
+ file.write(buffer);
+ bytesWritten += len;
+ }
+
+ src.setSysCallReturn(bytesWritten);
+ }
+ catch (InvalidFileDescriptor e) {
+ src.setSysCallError(errno.EBADF);
+ }
+ catch (Exception e) {
+ src.setSysCallError(errno.EIO);
+ }
+ }
+ }
+
+ public class SysOpen extends SystemCall {
+ public void doSysCall() {
+ int pathname = arguments.nextInt();
+ int flags = arguments.nextInt();
+
+ // Examine the flags argument and open read or read-write
+ // accordingly. args[0] points to the file name.
+ String fileName = memoryReadString(pathname);
+
+ // Create a File object so we can test for the existance and
+ // properties of the file.
+ File testFile = new File(fileName);
+
+ if(((flags & fcntl.O_CREAT) != 0) &&
+ ((flags & fcntl.O_EXCL) != 0) &&
+ testFile.exists()) {
+ // O_CREAT specified. If O_EXCL also specified, we require
+ // that the file does not already exist
+ src.setSysCallError(errno.EEXIST);
+ return;
+ }
+ else if(((flags & fcntl.O_CREAT) != 0) && !testFile.exists()) {
+ // O_CREAT not specified. We require that the file exists.
+ src.setSysCallError(errno.ENOENT);
+ return;
+ }
+
+ // we have not found an error, so we go ahead and try to open the file
+ try {
+ RandomAccessFile raFile;
+ int fd;
+
+ if((flags & 0x3) == fcntl.O_RDONLY) {
+ raFile = new RandomAccessFile(fileName, "r");
+ fd = openFiles.open( HostFile.forReading(raFile) );
+ }
+ else {
+ // NB Java RandomAccessFile has no write only
+ raFile = new RandomAccessFile(fileName, "rw");
+ fd = openFiles.open( HostFile.forWriting(raFile) );
+ }
+ src.setSysCallReturn(fd);
+ }
+ catch(FileNotFoundException e) {
+ System.err.println("Open tried to open non-existent file: " + fileName);
+ src.setSysCallError(errno.ENOENT);
+ return;
+ }
+
+ // NOT YET HANDLING ALL THE flags OPTIONS (IW have included
+ // TRUNC & APPEND but not properly!)
+ if((flags & ~(fcntl.O_WRONLY | fcntl.O_RDWR | fcntl.O_CREAT | fcntl.O_EXCL | fcntl.O_TRUNC |
+ fcntl.O_APPEND | fcntl.O_NOCTTY | fcntl.O_NONBLOCK)) != 0) {
+ throw new Error("Not yet implemented option to sys_open. 0" + Integer.toString(flags,8) +
+ " flag 0" + Integer.toString(flags & ~(fcntl.O_WRONLY | fcntl.O_RDWR | fcntl.O_CREAT |
+ fcntl.O_EXCL | fcntl.O_TRUNC | fcntl.O_APPEND | fcntl.O_NOCTTY | fcntl.O_NONBLOCK),8));
+ }
+ }
+ }
+
+ public class SysClose extends SystemCall {
+ public void doSysCall() {
+ int fd = arguments.nextInt();
+
+ try {
+ OpenFile f = openFiles.get(fd);
+ f.close();
+ }
+ catch (InvalidFileDescriptor e) {
+ src.setSysCallError(errno.EBADF);
+ }
+ catch (IOException e) {
+ src.setSysCallError(errno.EIO);
+ }
+ }
+ }
+
+ public class SysGetEUID extends SystemCall {
+ public void doSysCall() {
+ src.setSysCallReturn(DBT_Options.UID);
+ }
+ }
+
+ public class SysGetUID extends SystemCall {
+ public void doSysCall() {
+ src.setSysCallReturn(DBT_Options.UID);
+ }
+ }
+
+ public class SysGetEGID extends SystemCall {
+ public void doSysCall() {
+ src.setSysCallReturn(DBT_Options.GID);
+ }
+ }
+
+ public class SysGetGID extends SystemCall {
+ public void doSysCall() {
+ src.setSysCallReturn(DBT_Options.GID);
+ }
+ }
+
+ public class SysBrk extends SystemCall {
+ public void doSysCall() {
+ int brk = arguments.nextInt();
+ if(brk != 0) {
+ // Request to set the current top of bss.
+ src.setBrk(brk);
+ }
+ src.setSysCallReturn(src.getBrk());
+ }
+ }
+
+ public class SysFstat64 extends SystemCall {
+ public void doSysCall() {
+ int fd = arguments.nextInt();
+
+ LinuxStructureFactory.stat64 buf = structures.new_stat64();
+
+ if (fd == 0 || fd == 1 || fd == 2) {
+ buf.st_mode = 0x2180;
+ buf.st_rdev = (short)0x8800;
+ buf.__st_ino = buf.st_ino = 2;
+ buf.st_blksize = 0x400;
+ }
+ else
+ throw new RuntimeException("Unimplemented system call.");
+
+ buf.write(src.getProcessSpace().memory, arguments.nextInt());
+ src.setSysCallReturn(0);
+ }
+ }
+
+ public class SysStat64 extends SystemCall {
+
+ @Override
+ public void doSysCall() {
+ int ptrFilename = arguments.nextInt();
+ int ptrStruct64 = arguments.nextInt();
+
+ String filename = memoryReadString(ptrFilename);
+
+ if (DBT_Options.debugSyscallMore) System.err.println("Stat64() denies existance of file: " + filename);
+ src.setSysCallError(errno.ENOENT);
+ }
+
+ }
+
+ public class SysFcntl64 extends SystemCall {
+ public void doSysCall() {
+ // This is complicated so fudge it for now.
+ int fd = arguments.nextInt();
+ int cmd = arguments.nextInt();
+
+ if( ((fd == 0) || (fd == 1) || (fd == 2)) && (cmd == 1) )
+ src.setSysCallReturn(0);
+ else
+ throw new Error("Unrecognised system call.");
+ }
+ }
+
+ public class SysUname extends SystemCall {
+ public void doSysCall() {
+ // Simple uname support
+ int addr = arguments.nextInt();
+
+ if (addr != 0) {
+ String localhostString, domainName, hostName;
+ try {
+ InetAddress localhost = InetAddress.getLocalHost();
+ localhostString = localhost.getHostName();
+ }
+ catch (UnknownHostException e) {
+ localhostString = "localhost.localdomain";
+ }
+ int index = localhostString.indexOf('.');
+ if (index == -1) {
+ domainName = null;
+ hostName = localhostString;
+ }
+ else {
+ domainName = localhostString.substring(index + 1);
+ hostName = localhostString.substring(0,index);
+ }
+
+ // Fill in utsname struct - see /usr/include/sys/utsname.h
+ memoryWriteString (addr, getSysName()); // sysname
+ memoryWriteString (addr+65, hostName); // nodename
+ memoryWriteString (addr+130, getRelease()); // release
+ memoryWriteString (addr+195, getVersion()); // version
+ memoryWriteString (addr+260, getMachine()); // machine
+ memoryWriteString (addr+325, domainName); // __domainname
+ src.setSysCallReturn(0);
+ }
+ else {
+ // attempt to write to address 0
+ src.setSysCallError(errno.EFAULT);
+ }
+ }
+ }
+
+ public class SysMmap extends SystemCall {
+ public void doSysCall() {
+
+ int addr = arguments.nextInt();
+ int length = arguments.nextInt();
+ int prot = arguments.nextInt();
+ int flags = arguments.nextInt();
+ int fd = arguments.nextInt();
+ int offset = arguments.nextInt();
+
+ if((flags & mman.MAP_ANONYMOUS) != 0 ) {
+
+ if ((flags & mman.MAP_SHARED) != 0)
+ throw new Error("Mapping of shared pages is currently not supported.");
+
+ //Anonymous private mappings just request memory.
+ //Ignore the file descriptor and offset, map the required amount of memory and
+ //return the address of the mapped memory;
+ addr = 0;
+
+ try {
+ Memory mem = src.getProcessSpace().memory;
+ addr = mem.map(addr, length,
+ (prot & mman.PROT_READ) != 0,
+ (prot & mman.PROT_WRITE) != 0,
+ (prot & mman.PROT_EXEC) != 0);
+
+ src.setSysCallReturn(addr);
+ }
+ catch (MemoryMapException e) {
+ throw new Error("Error in mmap", e);
+ }
+ } else {
+ throw new Error("Non-anonymous sys_mmap not yet implemented.");
+ }
+ }
+ }
+
+ public class SysMunmap extends SystemCall {
+ public void doSysCall() {
+
+ int start = arguments.nextInt();
+ int length = arguments.nextInt();
+
+ src.getProcessSpace().memory.unmap(start, length);
+ src.setSysCallReturn(0);
+ }
+ }
+
+ public class SysExitGroup extends SystemCall {
+ public void doSysCall() {
+ // For now, equivalent to SysExit
+ System.exit(arguments.nextInt());
+ }
+ }
+}
Added: src/org/binarytranslator/generic/os/abi/linux/files/ConsoleIn.java
===================================================================
--- src/org/binarytranslator/generic/os/abi/linux/files/ConsoleIn.java (rev 0)
+++ src/org/binarytranslator/generic/os/abi/linux/files/ConsoleIn.java 2007-04-26 20:26:01 UTC (rev 93)
@@ -0,0 +1,18 @@
+package org.binarytranslator.generic.os.abi.linux.files;
+
+import java.io.IOException;
+
+/**
+ * An open linux file that represents the console input.
+ */
+public class ConsoleIn implements ReadableFile {
+
+ public int read(byte[] bytes) throws IOException {
+ return System.in.read(bytes);
+ }
+
+ public void close() throws IOException {
+ //no-op
+ }
+
+}
Added: src/org/binarytranslator/generic/os/abi/linux/files/ConsoleOut.java
===================================================================
--- src/org/binarytranslator/generic/os/abi/linux/files/ConsoleOut.java (rev 0)
+++ src/org/binarytranslator/generic/os/abi/linux/files/ConsoleOut.java 2007-04-26 20:26:01 UTC (rev 93)
@@ -0,0 +1,24 @@
+package org.binarytranslator.generic.os.abi.linux.files;
+
+import java.io.IOException;
+import java.io.PrintStream;
+
+/**
+ * An open linux file that represents the console ouput streams (stdout and stderr).
+ */
+public class ConsoleOut implements WriteableFile {
+
+ private final PrintStream stream;
+
+ public ConsoleOut(PrintStream stream) {
+ this.stream = stream;
+ }
+
+ public void write(byte[] bytes) throws IOException {
+ stream.write(bytes);
+ }
+
+ public void close() throws IOException {
+ //no-op
+ }
+}
Added: src/org/binarytranslator/generic/os/abi/linux/files/HostFile.java
===================================================================
--- src/org/binarytranslator/generic/os/abi/linux/files/HostFile.java (rev 0)
+++ src/org/binarytranslator/generic/os/abi/linux/files/HostFile.java 2007-04-26 20:26:01 UTC (rev 93)
@@ -0,0 +1,50 @@
+package org.binarytranslator.generic.os.abi.linux.files;
+
+import java.io.IOException;
+import java.io.RandomAccessFile;
+
+/**
+ * A linux file that represents an open file on the host file system.
+ */
+public class HostFile implements OpenFile {
+
+ protected final RandomAccessFile file;
+
+ public static HostFile forReading(RandomAccessFile file) {
+ return new ReadableHostFile(file);
+ }
+
+ public static HostFile forWriting(RandomAccessFile file) {
+ return new WriteableHostFile(file);
+ }
+
+ protected HostFile(RandomAccessFile file) {
+ this.file = file;
+ }
+
+ public void close() throws IOException {
+ file.close();
+ }
+
+ private static class ReadableHostFile extends HostFile implements ReadableFile {
+
+ protected ReadableHostFile(RandomAccessFile file) {
+ super(file);
+ }
+
+ public int read(byte[] buffer) throws IOException {
+ return file.read(buffer);
+ }
+ }
+
+ private static class WriteableHostFile extends ReadableHostFile implements WriteableFile {
+
+ protected WriteableHostFile(RandomAccessFile file) {
+ super(file);
+ }
+
+ public void write(byte[] bytes) throws IOException {
+ file.write(bytes);
+ }
+ }
+}
Added: src/org/binarytranslator/generic/os/abi/linux/files/OpenFile.java
===================================================================
--- src/org/binarytranslator/generic/os/abi/linux/files/OpenFile.java (rev 0)
+++ src/org/binarytranslator/generic/os/abi/linux/files/OpenFile.java 2007-04-26 20:26:01 UTC (rev 93)
@@ -0,0 +1,10 @@
+package org.binarytranslator.generic.os.abi.linux.files;
+
+import ja...
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