syscall.c

一个很有名的硬件模拟器。可以模拟CPU

/* syscall.c - proxy system call handler routines */

/* SimpleScalar(TM) Tool Suite
 * Copyright (C) 1994-2003 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
 * All Rights Reserved. 
 * 
 * THIS IS A LEGAL DOCUMENT, BY USING SIMPLESCALAR,
 * YOU ARE AGREEING TO THESE TERMS AND CONDITIONS.
 * 
 * No portion of this work may be used by any commercial entity, or for any
 * commercial purpose, without the prior, written permission of SimpleScalar,
 * LLC ([e-mail]). Nonprofit and noncommercial use is permitted
 * as described below.
 * 
 * 1. SimpleScalar is provided AS IS, with no warranty of any kind, express
 * or implied. The user of the program accepts full responsibility for the
 * application of the program and the use of any results.
 * 
 * 2. Nonprofit and noncommercial use is encouraged. SimpleScalar may be
 * downloaded, compiled, executed, copied, and modified solely for nonprofit,
 * educational, noncommercial research, and noncommercial scholarship
 * purposes provided that this notice in its entirety accompanies all copies.
 * Copies of the modified software can be delivered to persons who use it
 * solely for nonprofit, educational, noncommercial research, and
 * noncommercial scholarship purposes provided that this notice in its
 * entirety accompanies all copies.
 * 
 * 3. ALL COMMERCIAL USE, AND ALL USE BY FOR PROFIT ENTITIES, IS EXPRESSLY
 * PROHIBITED WITHOUT A LICENSE FROM SIMPLESCALAR, LLC ([e-mail]).
 * 
 * 4. No nonprofit user may place any restrictions on the use of this software,
 * including as modified by the user, by any other authorized user.
 * 
 * 5. Noncommercial and nonprofit users may distribute copies of SimpleScalar
 * in compiled or executable form as set forth in Section 2, provided that
 * either: (A) it is accompanied by the corresponding machine-readable source
 * code, or (B) it is accompanied by a written offer, with no time limit, to
 * give anyone a machine-readable copy of the corresponding source code in
 * return for reimbursement of the cost of distribution. This written offer
 * must permit verbatim duplication by anyone, or (C) it is distributed by
 * someone who received only the executable form, and is accompanied by a
 * copy of the written offer of source code.
 * 
 * 6. SimpleScalar was developed by Todd M. Austin, Ph.D. The tool suite is
 * currently maintained by SimpleScalar LLC ([e-mail]). US Mail:
 * 2395 Timbercrest Court, Ann Arbor, MI 48105.
 * 
 * Copyright (C) 1994-2003 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
 */


#include <stdio.h>
#include <stdlib.h>

/* only enable a minimal set of systen call proxies if on limited
   hosts or if in cross endian live execution mode */
#ifndef MIN_SYSCALL_MODE
#if defined(_MSC_VER) || defined(__CYGWIN32__) || defined(MD_CROSS_ENDIAN)
#define MIN_SYSCALL_MODE
#endif
#endif /* !MIN_SYSCALL_MODE */

/* live execution only support on same-endian hosts... */
#ifdef _MSC_VER
#include <io.h>
#else /* !_MSC_VER */
#include <unistd.h>
#endif
#include <fcntl.h>
#include <sys/types.h>
#ifndef _MSC_VER
#include <sys/param.h>
#endif
#include <errno.h>
#include <time.h>
#ifndef _MSC_VER
#include <sys/time.h>
#endif
#ifndef _MSC_VER
#include <sys/resource.h>
#endif
#include <signal.h>
#ifndef _MSC_VER
#include <sys/file.h>
#endif
#include <sys/stat.h>
#ifndef _MSC_VER
#include <sys/uio.h>
#endif
#include <setjmp.h>
#ifndef _MSC_VER
#include <sys/times.h>
#endif
#include <limits.h>
#ifndef _MSC_VER
#include <sys/ioctl.h>
#endif
#if defined(linux)
#include <utime.h>
#include <dirent.h>
#include <sys/vfs.h>
#endif
#if defined(_AIX)
#include <sys/statfs.h>
#else /* !_AIX */
#ifndef _MSC_VER
#include <sys/mount.h>
#endif
#endif /* !_AIX */
#if !defined(linux) && !defined(sparc) && !defined(hpux) && !defined(__hpux) && !defined(__CYGWIN32__) && !defined(ultrix)
#ifndef _MSC_VER
#include <sys/select.h>
#endif
#endif
#ifdef linux
#include <sgtty.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <netinet/in.h>
#endif /* linux */

#if defined(__svr4__)
#include <sys/dirent.h>
#include <sys/filio.h>
#elif defined(__osf__)
#include <dirent.h>
/* -- For some weird reason, getdirentries() is not declared in any
 * -- header file under /usr/include on the Alpha boxen that I tried
 * -- SS-Alpha on. But the function exists in the libraries.
 */
int getdirentries(int fd, char *buf, int nbytes, long *basep);
#endif

#if defined(__svr4__) || defined(__osf__)
#include <sys/statvfs.h>
#define statfs statvfs
#include <sys/time.h>
#include <utime.h>
#include <sgtty.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#endif

#if defined(sparc) && defined(__unix__)
#if defined(__svr4__) || defined(__USLC__)
#include <dirent.h>
#else
#include <sys/dir.h>
#endif

/* dorks */
#undef NL0
#undef NL1
#undef CR0
#undef CR1
#undef CR2
#undef CR3
#undef TAB0
#undef TAB1
#undef TAB2
#undef XTABS
#undef BS0
#undef BS1
#undef FF0
#undef FF1
#undef ECHO
#undef NOFLSH
#undef TOSTOP
#undef FLUSHO
#undef PENDIN
#endif

#if defined(hpux) || defined(__hpux)
#undef CR0
#endif

#ifdef __FreeBSD__
#include <sys/ioctl_compat.h>
#else
#ifndef _MSC_VER
#include <termio.h>
#endif
#endif

#if defined(hpux) || defined(__hpux)
/* et tu, dorks! */
#undef HUPCL
#undef ECHO
#undef B50
#undef B75
#undef B110
#undef B134
#undef B150
#undef B200
#undef B300
#undef B600
#undef B1200
#undef B1800
#undef B2400
#undef B4800
#undef B9600
#undef B19200
#undef B38400
#undef NL0
#undef NL1
#undef CR0
#undef CR1
#undef CR2
#undef CR3
#undef TAB0
#undef TAB1
#undef BS0
#undef BS1
#undef FF0
#undef FF1
#undef EXTA
#undef EXTB
#undef B900
#undef B3600
#undef B7200
#undef XTABS
#include <sgtty.h>
#include <utime.h>
#endif

#include <sys/socket.h>
#include <sys/poll.h>

#ifdef _MSC_VER
#define access		_access
#define chmod		_chmod
#define chdir		_chdir
#define unlink		_unlink
#define open		_open
#define creat		_creat
#define pipe		_pipe
#define dup		_dup
#define dup2		_dup2
#define stat		_stat
#define fstat		_fstat
#define lseek		_lseek
#define read		_read
#define write		_write
#define close		_close
#define getpid		_getpid
#define utime		_utime
#include <sys/utime.h>
#endif /* _MSC_VER */

#include "host.h"
#include "misc.h"
#include "machine.h"
#include "regs.h"
#include "memory.h"
#include "loader.h"
#include "sim.h"
#include "endian.h"
#include "eio.h"
#include "syscall.h"

#define OSF_SYS_syscall     0
/* OSF_SYS_exit moved to alpha.h */
#define OSF_SYS_fork        2
#define OSF_SYS_read        3
/* OSF_SYS_write moved to alpha.h */
#define OSF_SYS_old_open    5       /* 5 is old open */
#define OSF_SYS_close       6
#define OSF_SYS_wait4       7
#define OSF_SYS_old_creat   8       /* 8 is old creat */
#define OSF_SYS_link        9
#define OSF_SYS_unlink      10
#define OSF_SYS_execv       11
#define OSF_SYS_chdir       12
#define OSF_SYS_fchdir      13
#define OSF_SYS_mknod       14
#define OSF_SYS_chmod       15
#define OSF_SYS_chown       16
#define OSF_SYS_obreak      17
#define OSF_SYS_getfsstat   18
#define OSF_SYS_lseek       19
#define OSF_SYS_getpid      20
#define OSF_SYS_mount       21
#define OSF_SYS_unmount     22
#define OSF_SYS_setuid      23
#define OSF_SYS_getuid      24
#define OSF_SYS_exec_with_loader    25
#define OSF_SYS_ptrace      26
#ifdef  COMPAT_43
#define OSF_SYS_nrecvmsg    27
#define OSF_SYS_nsendmsg    28
#define OSF_SYS_nrecvfrom   29
#define OSF_SYS_naccept     30
#define OSF_SYS_ngetpeername        31
#define OSF_SYS_ngetsockname        32
#else
#define OSF_SYS_recvmsg     27
#define OSF_SYS_sendmsg     28
#define OSF_SYS_recvfrom    29
#define OSF_SYS_accept      30
#define OSF_SYS_getpeername 31
#define OSF_SYS_getsockname 32
#endif
#define OSF_SYS_access      33
#define OSF_SYS_chflags     34
#define OSF_SYS_fchflags    35
#define OSF_SYS_sync        36
#define OSF_SYS_kill        37
#define OSF_SYS_old_stat    38      /* 38 is old stat */
#define OSF_SYS_setpgid     39
#define OSF_SYS_old_lstat   40      /* 40 is old lstat */
#define OSF_SYS_dup 41
#define OSF_SYS_pipe        42
#define OSF_SYS_set_program_attributes      43
#define OSF_SYS_profil      44
#define OSF_SYS_open        45
                                /* 46 is obsolete osigaction */
#define OSF_SYS_getgid      47
#define OSF_SYS_sigprocmask 48
#define OSF_SYS_getlogin    49
#define OSF_SYS_setlogin    50
#define OSF_SYS_acct        51
#define OSF_SYS_sigpending  52
#define OSF_SYS_ioctl       54
#define OSF_SYS_reboot      55
#define OSF_SYS_revoke      56
#define OSF_SYS_symlink     57
#define OSF_SYS_readlink    58
#define OSF_SYS_execve      59
#define OSF_SYS_umask       60
#define OSF_SYS_chroot      61
#define OSF_SYS_old_fstat   62      /* 62 is old fstat */
#define OSF_SYS_getpgrp     63
#define OSF_SYS_getpagesize 64
#define OSF_SYS_mremap      65
#define OSF_SYS_vfork       66
#define OSF_SYS_stat        67
#define OSF_SYS_lstat       68
#define OSF_SYS_sbrk        69
#define OSF_SYS_sstk        70
#define OSF_SYS_mmap        71
#define OSF_SYS_ovadvise    72
#define OSF_SYS_munmap      73
#define OSF_SYS_mprotect    74
#define OSF_SYS_madvise     75
#define OSF_SYS_old_vhangup 76      /* 76 is old vhangup */
#define OSF_SYS_kmodcall    77
#define OSF_SYS_mincore     78
#define OSF_SYS_getgroups   79
#define OSF_SYS_setgroups   80
#define OSF_SYS_old_getpgrp 81      /* 81 is old getpgrp */
#define OSF_SYS_setpgrp     82
#define OSF_SYS_setitimer   83
#define OSF_SYS_old_wait    84      /* 84 is old wait */
#define OSF_SYS_table       85
#define OSF_SYS_getitimer   86
#define OSF_SYS_gethostname 87
#define OSF_SYS_sethostname 88
#define OSF_SYS_getdtablesize       89
#define OSF_SYS_dup2        90
#define OSF_SYS_fstat       91
#define OSF_SYS_fcntl       92
#define OSF_SYS_select      93
#define OSF_SYS_poll        94
#define OSF_SYS_fsync       95
#define OSF_SYS_setpriority 96
#define OSF_SYS_socket      97
#define OSF_SYS_connect     98
#ifdef  COMPAT_43
#define OSF_SYS_accept      99
#else
#define OSF_SYS_old_accept  99      /* 99 is old accept */
#endif
#define OSF_SYS_getpriority 100
#ifdef  COMPAT_43
#define OSF_SYS_send        101
#define OSF_SYS_recv        102
#else
#define OSF_SYS_old_send    101     /* 101 is old send */
#define OSF_SYS_old_recv    102     /* 102 is old recv */
#endif
#define OSF_SYS_sigreturn   103
#define OSF_SYS_bind        104
#define OSF_SYS_setsockopt  105
#define OSF_SYS_listen      106
#define OSF_SYS_plock       107
#define OSF_SYS_old_sigvec  108     /* 108 is old sigvec */
#define OSF_SYS_old_sigblock        109     /* 109 is old sigblock */
#define OSF_SYS_old_sigsetmask      110     /* 110 is old sigsetmask */
#define OSF_SYS_sigsuspend  111
#define OSF_SYS_sigstack    112
#ifdef  COMPAT_43
#define OSF_SYS_recvmsg     113
#define OSF_SYS_sendmsg     114
#else
#define OSF_SYS_old_recvmsg 113     /* 113 is old recvmsg */
#define OSF_SYS_old_sendmsg 114     /* 114 is old sendmsg */
#endif
                                /* 115 is obsolete vtrace */
#define OSF_SYS_gettimeofday        116
#define OSF_SYS_getrusage   117
#define OSF_SYS_getsockopt  118
#define OSF_SYS_readv       120
#define OSF_SYS_writev      121
#define OSF_SYS_settimeofday        122
#define OSF_SYS_fchown      123
#define OSF_SYS_fchmod      124
#ifdef  COMPAT_43
#define OSF_SYS_recvfrom    125
#else
#define OSF_SYS_old_recvfrom        125     /* 125 is old recvfrom */
#endif
#define OSF_SYS_setreuid    126
#define OSF_SYS_setregid    127
#define OSF_SYS_rename      128
#define OSF_SYS_truncate    129
#define OSF_SYS_ftruncate   130
#define OSF_SYS_flock       131
#define OSF_SYS_setgid      132
#define OSF_SYS_sendto      133
#define OSF_SYS_shutdown    134
#define OSF_SYS_socketpair  135
#define OSF_SYS_mkdir       136
#define OSF_SYS_rmdir       137
#define OSF_SYS_utimes      138
                                /* 139 is obsolete 4.2 sigreturn */
#define OSF_SYS_adjtime     140
#ifdef  COMPAT_43
#define OSF_SYS_getpeername 141
#else
#define OSF_SYS_old_getpeername     141     /* 141 is old getpeername */
#endif
#define OSF_SYS_gethostid   142
#define OSF_SYS_sethostid   143
#define OSF_SYS_getrlimit   144
#define OSF_SYS_setrlimit   145
#define OSF_SYS_old_killpg  146     /* 146 is old killpg */
#define OSF_SYS_setsid      147
#define OSF_SYS_quotactl    148
#define OSF_SYS_oldquota    149
#ifdef  COMPAT_43
#define OSF_SYS_getsockname 150
#else
#define OSF_SYS_old_getsockname     150     /* 150 is old getsockname */
#endif
#define OSF_SYS_pid_block   153
#define OSF_SYS_pid_unblock 154
#define OSF_SYS_sigaction   156
#define OSF_SYS_sigwaitprim 157
#define OSF_SYS_nfssvc      158
#define OSF_SYS_getdirentries       159
#define OSF_SYS_statfs      160
#define OSF_SYS_fstatfs     161
#define OSF_SYS_async_daemon        163
#define OSF_SYS_getfh       164
#define OSF_SYS_getdomainname       165
#define OSF_SYS_setdomainname       166
#define OSF_SYS_exportfs    169
#define OSF_SYS_alt_plock   181     /* 181 is alternate plock */
#define OSF_SYS_getmnt      184
#define OSF_SYS_alt_sigpending      187     /* 187 is alternate sigpending */
#define OSF_SYS_alt_setsid  188     /* 188 is alternate setsid */
#define OSF_SYS_swapon      199
#define OSF_SYS_msgctl      200
#define OSF_SYS_msgget      201
#define OSF_SYS_msgrcv      202
#define OSF_SYS_msgsnd      203
#define OSF_SYS_semctl      204
#define OSF_SYS_semget      205
#define OSF_SYS_semop       206
#define OSF_SYS_uname       207