]> Git Repo - qemu.git/blobdiff - linux-user/syscall.c
Delete leftover Status FPU flag check.
[qemu.git] / linux-user / syscall.c
index 7da469aa8978c11c58a0cd00a26ed36b26067aac..1ec81ce5be41e35bbfc96d4d6f760d1d151c7e20 100644 (file)
 #include <fcntl.h>
 #include <time.h>
 #include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
 #include <sys/wait.h>
 #include <sys/time.h>
 #include <sys/stat.h>
 #include <sys/mount.h>
+#include <sys/prctl.h>
 #include <sys/resource.h>
 #include <sys/mman.h>
 #include <sys/swap.h>
@@ -42,6 +45,7 @@
 #include <sys/poll.h>
 #include <sys/times.h>
 #include <sys/shm.h>
+#include <sys/sem.h>
 #include <sys/statfs.h>
 #include <utime.h>
 #include <sys/sysinfo.h>
@@ -69,7 +73,8 @@
 
 //#define DEBUG
 
-#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC)
+#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) \
+    || defined(TARGET_M68K) || defined(TARGET_SH4)
 /* 16 bit uid wrappers emulation */
 #define USE_UID16
 #endif
 #define        VFAT_IOCTL_READDIR_SHORT        _IOR('r', 2, struct dirent [2])
 
 
-#if defined(__powerpc__)
-#undef __syscall_nr
-#undef __sc_loadargs_0
-#undef __sc_loadargs_1
-#undef __sc_loadargs_2
-#undef __sc_loadargs_3
-#undef __sc_loadargs_4
-#undef __sc_loadargs_5
-#undef __sc_asm_input_0
-#undef __sc_asm_input_1
-#undef __sc_asm_input_2
-#undef __sc_asm_input_3
-#undef __sc_asm_input_4
-#undef __sc_asm_input_5
 #undef _syscall0
 #undef _syscall1
 #undef _syscall2
 #undef _syscall3
 #undef _syscall4
 #undef _syscall5
+#undef _syscall6
 
-/* need to redefine syscalls as Linux kernel defines are incorrect for
-   the clobber list */
-/* On powerpc a system call basically clobbers the same registers like a
- * function call, with the exception of LR (which is needed for the
- * "sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
- * an error return status).
- */
+#define _syscall0(type,name)           \
+type name (void)                       \
+{                                      \
+       return syscall(__NR_##name);    \
+}
 
-#define __syscall_nr(nr, type, name, args...)                          \
-       unsigned long __sc_ret, __sc_err;                               \
-       {                                                               \
-               register unsigned long __sc_0  __asm__ ("r0");          \
-               register unsigned long __sc_3  __asm__ ("r3");          \
-               register unsigned long __sc_4  __asm__ ("r4");          \
-               register unsigned long __sc_5  __asm__ ("r5");          \
-               register unsigned long __sc_6  __asm__ ("r6");          \
-               register unsigned long __sc_7  __asm__ ("r7");          \
-                                                                       \
-               __sc_loadargs_##nr(name, args);                         \
-               __asm__ __volatile__                                    \
-                       ("sc           \n\t"                            \
-                        "mfcr %0      "                                \
-                       : "=&r" (__sc_0),                               \
-                         "=&r" (__sc_3),  "=&r" (__sc_4),              \
-                         "=&r" (__sc_5),  "=&r" (__sc_6),              \
-                         "=&r" (__sc_7)                                \
-                       : __sc_asm_input_##nr                           \
-                       : "cr0", "ctr", "memory",                       \
-                         "r8", "r9", "r10","r11", "r12");              \
-               __sc_ret = __sc_3;                                      \
-               __sc_err = __sc_0;                                      \
-       }                                                               \
-       if (__sc_err & 0x10000000)                                      \
-       {                                                               \
-               errno = __sc_ret;                                       \
-               __sc_ret = -1;                                          \
-       }                                                               \
-       return (type) __sc_ret
-
-#define __sc_loadargs_0(name, dummy...)                                        \
-       __sc_0 = __NR_##name
-#define __sc_loadargs_1(name, arg1)                                    \
-       __sc_loadargs_0(name);                                          \
-       __sc_3 = (unsigned long) (arg1)
-#define __sc_loadargs_2(name, arg1, arg2)                              \
-       __sc_loadargs_1(name, arg1);                                    \
-       __sc_4 = (unsigned long) (arg2)
-#define __sc_loadargs_3(name, arg1, arg2, arg3)                                \
-       __sc_loadargs_2(name, arg1, arg2);                              \
-       __sc_5 = (unsigned long) (arg3)
-#define __sc_loadargs_4(name, arg1, arg2, arg3, arg4)                  \
-       __sc_loadargs_3(name, arg1, arg2, arg3);                        \
-       __sc_6 = (unsigned long) (arg4)
-#define __sc_loadargs_5(name, arg1, arg2, arg3, arg4, arg5)            \
-       __sc_loadargs_4(name, arg1, arg2, arg3, arg4);                  \
-       __sc_7 = (unsigned long) (arg5)
-
-#define __sc_asm_input_0 "0" (__sc_0)
-#define __sc_asm_input_1 __sc_asm_input_0, "1" (__sc_3)
-#define __sc_asm_input_2 __sc_asm_input_1, "2" (__sc_4)
-#define __sc_asm_input_3 __sc_asm_input_2, "3" (__sc_5)
-#define __sc_asm_input_4 __sc_asm_input_3, "4" (__sc_6)
-#define __sc_asm_input_5 __sc_asm_input_4, "5" (__sc_7)
-
-#define _syscall0(type,name)                                           \
-type name(void)                                                                \
-{                                                                      \
-       __syscall_nr(0, type, name);                                    \
+#define _syscall1(type,name,type1,arg1)                \
+type name (type1 arg1)                         \
+{                                              \
+       return syscall(__NR_##name, arg1);      \
 }
 
-#define _syscall1(type,name,type1,arg1)                                        \
-type name(type1 arg1)                                                  \
-{                                                                      \
-       __syscall_nr(1, type, name, arg1);                              \
+#define _syscall2(type,name,type1,arg1,type2,arg2)     \
+type name (type1 arg1,type2 arg2)                      \
+{                                                      \
+       return syscall(__NR_##name, arg1, arg2);        \
 }
 
-#define _syscall2(type,name,type1,arg1,type2,arg2)                     \
-type name(type1 arg1, type2 arg2)                                      \
-{                                                                      \
-       __syscall_nr(2, type, name, arg1, arg2);                        \
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)  \
+type name (type1 arg1,type2 arg2,type3 arg3)                   \
+{                                                              \
+       return syscall(__NR_##name, arg1, arg2, arg3);          \
 }
 
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)          \
-type name(type1 arg1, type2 arg2, type3 arg3)                          \
-{                                                                      \
-       __syscall_nr(3, type, name, arg1, arg2, arg3);                  \
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)       \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4)                                \
+{                                                                              \
+       return syscall(__NR_##name, arg1, arg2, arg3, arg4);                    \
 }
 
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4)              \
-{                                                                      \
-       __syscall_nr(4, type, name, arg1, arg2, arg3, arg4);            \
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,       \
+                 type5,arg5)                                                   \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5)             \
+{                                                                              \
+       return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5);              \
 }
 
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)  \
-{                                                                      \
-       __syscall_nr(5, type, name, arg1, arg2, arg3, arg4, arg5);      \
+
+#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,       \
+                 type5,arg5,type6,arg6)                                        \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6)  \
+{                                                                              \
+       return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6);        \
 }
-#endif
+
 
 #define __NR_sys_uname __NR_uname
 #define __NR_sys_getcwd1 __NR_getcwd
 #define __NR_sys_getdents __NR_getdents
 #define __NR_sys_getdents64 __NR_getdents64
 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
+#define __NR_sys_syslog __NR_syslog
 
 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)
 #define __NR__llseek __NR_lseek
@@ -225,9 +163,13 @@ _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
           loff_t *, res, uint, wh);
 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
+_syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
 #ifdef __NR_exit_group
 _syscall1(int,exit_group,int,error_code)
 #endif
+#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
+_syscall1(int,set_tid_address,int *,tidptr)
+#endif
 
 extern int personality(int);
 extern int flock(int, int);
@@ -239,10 +181,117 @@ extern int setresgid(gid_t, gid_t, gid_t);
 extern int getresgid(gid_t *, gid_t *, gid_t *);
 extern int setgroups(int, gid_t *);
 
+/*
+ * This list is the union of errno values overidden in asm-<arch>/errno.h
+ * minus the errnos that are not actually generic to all archs.
+ */
+static uint16_t host_to_target_errno_table[1200] = {
+    [EIDRM]            = TARGET_EIDRM,
+    [ECHRNG]           = TARGET_ECHRNG,
+    [EL2NSYNC]         = TARGET_EL2NSYNC,
+    [EL3HLT]           = TARGET_EL3HLT,
+    [EL3RST]           = TARGET_EL3RST,
+    [ELNRNG]           = TARGET_ELNRNG,
+    [EUNATCH]          = TARGET_EUNATCH,
+    [ENOCSI]           = TARGET_ENOCSI,
+    [EL2HLT]           = TARGET_EL2HLT,
+    [EDEADLK]          = TARGET_EDEADLK,
+    [ENOLCK]           = TARGET_ENOLCK,
+    [EBADE]            = TARGET_EBADE,
+    [EBADR]            = TARGET_EBADR,
+    [EXFULL]           = TARGET_EXFULL,
+    [ENOANO]           = TARGET_ENOANO,
+    [EBADRQC]          = TARGET_EBADRQC,
+    [EBADSLT]          = TARGET_EBADSLT,
+    [EBFONT]           = TARGET_EBFONT,
+    [ENOSTR]           = TARGET_ENOSTR,
+    [ENODATA]          = TARGET_ENODATA,
+    [ETIME]            = TARGET_ETIME,
+    [ENOSR]            = TARGET_ENOSR,
+    [ENONET]           = TARGET_ENONET,
+    [ENOPKG]           = TARGET_ENOPKG,
+    [EREMOTE]          = TARGET_EREMOTE,
+    [ENOLINK]          = TARGET_ENOLINK,
+    [EADV]             = TARGET_EADV,
+    [ESRMNT]           = TARGET_ESRMNT,
+    [ECOMM]            = TARGET_ECOMM,
+    [EPROTO]           = TARGET_EPROTO,
+    [EDOTDOT]          = TARGET_EDOTDOT,
+    [EMULTIHOP]                = TARGET_EMULTIHOP,
+    [EBADMSG]          = TARGET_EBADMSG,
+    [ENAMETOOLONG]     = TARGET_ENAMETOOLONG,
+    [EOVERFLOW]                = TARGET_EOVERFLOW,
+    [ENOTUNIQ]         = TARGET_ENOTUNIQ,
+    [EBADFD]           = TARGET_EBADFD,
+    [EREMCHG]          = TARGET_EREMCHG,
+    [ELIBACC]          = TARGET_ELIBACC,
+    [ELIBBAD]          = TARGET_ELIBBAD,
+    [ELIBSCN]          = TARGET_ELIBSCN,
+    [ELIBMAX]          = TARGET_ELIBMAX,
+    [ELIBEXEC]         = TARGET_ELIBEXEC,
+    [EILSEQ]           = TARGET_EILSEQ,
+    [ENOSYS]           = TARGET_ENOSYS,
+    [ELOOP]            = TARGET_ELOOP,
+    [ERESTART]         = TARGET_ERESTART,
+    [ESTRPIPE]         = TARGET_ESTRPIPE,
+    [ENOTEMPTY]                = TARGET_ENOTEMPTY,
+    [EUSERS]           = TARGET_EUSERS,
+    [ENOTSOCK]         = TARGET_ENOTSOCK,
+    [EDESTADDRREQ]     = TARGET_EDESTADDRREQ,
+    [EMSGSIZE]         = TARGET_EMSGSIZE,
+    [EPROTOTYPE]       = TARGET_EPROTOTYPE,
+    [ENOPROTOOPT]      = TARGET_ENOPROTOOPT,
+    [EPROTONOSUPPORT]  = TARGET_EPROTONOSUPPORT,
+    [ESOCKTNOSUPPORT]  = TARGET_ESOCKTNOSUPPORT,
+    [EOPNOTSUPP]       = TARGET_EOPNOTSUPP,
+    [EPFNOSUPPORT]     = TARGET_EPFNOSUPPORT,
+    [EAFNOSUPPORT]     = TARGET_EAFNOSUPPORT,
+    [EADDRINUSE]       = TARGET_EADDRINUSE,
+    [EADDRNOTAVAIL]    = TARGET_EADDRNOTAVAIL,
+    [ENETDOWN]         = TARGET_ENETDOWN,
+    [ENETUNREACH]      = TARGET_ENETUNREACH,
+    [ENETRESET]                = TARGET_ENETRESET,
+    [ECONNABORTED]     = TARGET_ECONNABORTED,
+    [ECONNRESET]       = TARGET_ECONNRESET,
+    [ENOBUFS]          = TARGET_ENOBUFS,
+    [EISCONN]          = TARGET_EISCONN,
+    [ENOTCONN]         = TARGET_ENOTCONN,
+    [EUCLEAN]          = TARGET_EUCLEAN,
+    [ENOTNAM]          = TARGET_ENOTNAM,
+    [ENAVAIL]          = TARGET_ENAVAIL,
+    [EISNAM]           = TARGET_EISNAM,
+    [EREMOTEIO]                = TARGET_EREMOTEIO,
+    [ESHUTDOWN]                = TARGET_ESHUTDOWN,
+    [ETOOMANYREFS]     = TARGET_ETOOMANYREFS,
+    [ETIMEDOUT]                = TARGET_ETIMEDOUT,
+    [ECONNREFUSED]     = TARGET_ECONNREFUSED,
+    [EHOSTDOWN]                = TARGET_EHOSTDOWN,
+    [EHOSTUNREACH]     = TARGET_EHOSTUNREACH,
+    [EALREADY]         = TARGET_EALREADY,
+    [EINPROGRESS]      = TARGET_EINPROGRESS,
+    [ESTALE]           = TARGET_ESTALE,
+    [ECANCELED]                = TARGET_ECANCELED,
+    [ENOMEDIUM]                = TARGET_ENOMEDIUM,
+    [EMEDIUMTYPE]      = TARGET_EMEDIUMTYPE,
+    [ENOKEY]           = TARGET_ENOKEY,
+    [EKEYEXPIRED]      = TARGET_EKEYEXPIRED,
+    [EKEYREVOKED]      = TARGET_EKEYREVOKED,
+    [EKEYREJECTED]     = TARGET_EKEYREJECTED,
+    [EOWNERDEAD]       = TARGET_EOWNERDEAD,
+    [ENOTRECOVERABLE]  = TARGET_ENOTRECOVERABLE,
+       };
+
+static inline int host_to_target_errno(int err)
+{
+    if(host_to_target_errno_table[err])
+        return host_to_target_errno_table[err];
+    return err;
+}
+
 static inline long get_errno(long ret)
 {
     if (ret == -1)
-        return -errno;
+        return -host_to_target_errno(errno);
     else
         return ret;
 }
@@ -514,7 +563,7 @@ static inline void target_to_host_cmsg(struct msghdr *msgh,
         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
         cmsg->cmsg_len = CMSG_LEN(len);
 
-        if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
+        if (cmsg->cmsg_level != TARGET_SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
             memcpy(data, target_data, len);
         } else {
@@ -558,7 +607,7 @@ static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 
-        if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
+        if (cmsg->cmsg_level != TARGET_SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
             memcpy(target_data, data, len);
         } else {
@@ -620,38 +669,74 @@ static long do_setsockopt(int sockfd, int level, int optname,
             goto unimplemented;
         }
         break;
-    case SOL_SOCKET:
+    case TARGET_SOL_SOCKET:
         switch (optname) {
             /* Options with 'int' argument.  */
-        case SO_DEBUG:
-        case SO_REUSEADDR:
-        case SO_TYPE:
-        case SO_ERROR:
-        case SO_DONTROUTE:
-        case SO_BROADCAST:
-        case SO_SNDBUF:
-        case SO_RCVBUF:
-        case SO_KEEPALIVE:
-        case SO_OOBINLINE:
-        case SO_NO_CHECK:
-        case SO_PRIORITY:
+        case TARGET_SO_DEBUG:
+               optname = SO_DEBUG;
+               break;
+        case TARGET_SO_REUSEADDR:
+               optname = SO_REUSEADDR;
+               break;
+        case TARGET_SO_TYPE:
+               optname = SO_TYPE;
+               break;
+        case TARGET_SO_ERROR:
+               optname = SO_ERROR;
+               break;
+        case TARGET_SO_DONTROUTE:
+               optname = SO_DONTROUTE;
+               break;
+        case TARGET_SO_BROADCAST:
+               optname = SO_BROADCAST;
+               break;
+        case TARGET_SO_SNDBUF:
+               optname = SO_SNDBUF;
+               break;
+        case TARGET_SO_RCVBUF:
+               optname = SO_RCVBUF;
+               break;
+        case TARGET_SO_KEEPALIVE:
+               optname = SO_KEEPALIVE;
+               break;
+        case TARGET_SO_OOBINLINE:
+               optname = SO_OOBINLINE;
+               break;
+        case TARGET_SO_NO_CHECK:
+               optname = SO_NO_CHECK;
+               break;
+        case TARGET_SO_PRIORITY:
+               optname = SO_PRIORITY;
+               break;
 #ifdef SO_BSDCOMPAT
-        case SO_BSDCOMPAT:
-#endif
-        case SO_PASSCRED:
-        case SO_TIMESTAMP:
-        case SO_RCVLOWAT:
-        case SO_RCVTIMEO:
-        case SO_SNDTIMEO:
-            if (optlen < sizeof(uint32_t))
-                return -EINVAL;
-
-            val = tget32(optval);
-            ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
+        case TARGET_SO_BSDCOMPAT:
+               optname = SO_BSDCOMPAT;
+               break;
+#endif
+        case TARGET_SO_PASSCRED:
+               optname = SO_PASSCRED;
+               break;
+        case TARGET_SO_TIMESTAMP:
+               optname = SO_TIMESTAMP;
+               break;
+        case TARGET_SO_RCVLOWAT:
+               optname = SO_RCVLOWAT;
+               break;
+        case TARGET_SO_RCVTIMEO:
+               optname = SO_RCVTIMEO;
+               break;
+        case TARGET_SO_SNDTIMEO:
+               optname = SO_SNDTIMEO;
+               break;
             break;
         default:
             goto unimplemented;
         }
+       if (optlen < sizeof(uint32_t))
+       return -EINVAL;
+
+       val = tget32(optval);
+       ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
         break;
     default:
     unimplemented:
@@ -667,13 +752,14 @@ static long do_getsockopt(int sockfd, int level, int optname,
     int len, lv, val, ret;
 
     switch(level) {
-    case SOL_SOCKET:
+    case TARGET_SOL_SOCKET:
+       level = SOL_SOCKET;
        switch (optname) {
-       case SO_LINGER:
-       case SO_RCVTIMEO:
-       case SO_SNDTIMEO:
-       case SO_PEERCRED:
-       case SO_PEERNAME:
+       case TARGET_SO_LINGER:
+       case TARGET_SO_RCVTIMEO:
+       case TARGET_SO_SNDTIMEO:
+       case TARGET_SO_PEERCRED:
+       case TARGET_SO_PEERNAME:
            /* These don't just return a single integer */
            goto unimplemented;
         default:
@@ -779,6 +865,201 @@ static void unlock_iovec(struct iovec *vec, target_ulong target_addr,
     unlock_user (target_vec, target_addr, 0);
 }
 
+static long do_socket(int domain, int type, int protocol)
+{
+#if defined(TARGET_MIPS)
+    switch(type) {
+    case TARGET_SOCK_DGRAM:
+        type = SOCK_DGRAM;
+        break;
+    case TARGET_SOCK_STREAM:
+        type = SOCK_STREAM;
+        break;
+    case TARGET_SOCK_RAW:
+        type = SOCK_RAW;
+        break;
+    case TARGET_SOCK_RDM:
+        type = SOCK_RDM;
+        break;
+    case TARGET_SOCK_SEQPACKET:
+        type = SOCK_SEQPACKET;
+        break;
+    case TARGET_SOCK_PACKET:
+        type = SOCK_PACKET;
+        break;
+    }
+#endif
+    return get_errno(socket(domain, type, protocol));
+}
+
+static long do_bind(int sockfd, target_ulong target_addr,
+                    socklen_t addrlen)
+{
+    void *addr = alloca(addrlen);
+    
+    target_to_host_sockaddr(addr, target_addr, addrlen);
+    return get_errno(bind(sockfd, addr, addrlen));
+}
+
+static long do_connect(int sockfd, target_ulong target_addr,
+                    socklen_t addrlen)
+{
+    void *addr = alloca(addrlen);
+    
+    target_to_host_sockaddr(addr, target_addr, addrlen);
+    return get_errno(connect(sockfd, addr, addrlen));
+}
+
+static long do_sendrecvmsg(int fd, target_ulong target_msg,
+                           int flags, int send)
+{
+    long ret;
+    struct target_msghdr *msgp;
+    struct msghdr msg;
+    int count;
+    struct iovec *vec;
+    target_ulong target_vec;
+
+    lock_user_struct(msgp, target_msg, 1);
+    if (msgp->msg_name) {
+        msg.msg_namelen = tswap32(msgp->msg_namelen);
+        msg.msg_name = alloca(msg.msg_namelen);
+        target_to_host_sockaddr(msg.msg_name, tswapl(msgp->msg_name),
+                                msg.msg_namelen);
+    } else {
+        msg.msg_name = NULL;
+        msg.msg_namelen = 0;
+    }
+    msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
+    msg.msg_control = alloca(msg.msg_controllen);
+    msg.msg_flags = tswap32(msgp->msg_flags);
+    
+    count = tswapl(msgp->msg_iovlen);
+    vec = alloca(count * sizeof(struct iovec));
+    target_vec = tswapl(msgp->msg_iov);
+    lock_iovec(vec, target_vec, count, send);
+    msg.msg_iovlen = count;
+    msg.msg_iov = vec;
+    
+    if (send) {
+        target_to_host_cmsg(&msg, msgp);
+        ret = get_errno(sendmsg(fd, &msg, flags));
+    } else {
+        ret = get_errno(recvmsg(fd, &msg, flags));
+        if (!is_error(ret))
+            host_to_target_cmsg(msgp, &msg);
+    }
+    unlock_iovec(vec, target_vec, count, !send);
+    return ret;
+}
+
+static long do_accept(int fd, target_ulong target_addr,
+                      target_ulong target_addrlen)
+{
+    socklen_t addrlen = tget32(target_addrlen);
+    void *addr = alloca(addrlen);
+    long ret;
+
+    ret = get_errno(accept(fd, addr, &addrlen));
+    if (!is_error(ret)) {
+        host_to_target_sockaddr(target_addr, addr, addrlen);
+        tput32(target_addrlen, addrlen);
+    }
+    return ret;
+}
+
+static long do_getpeername(int fd, target_ulong target_addr,
+                           target_ulong target_addrlen)
+{
+    socklen_t addrlen = tget32(target_addrlen);
+    void *addr = alloca(addrlen);
+    long ret;
+
+    ret = get_errno(getpeername(fd, addr, &addrlen));
+    if (!is_error(ret)) {
+        host_to_target_sockaddr(target_addr, addr, addrlen);
+        tput32(target_addrlen, addrlen);
+    }
+    return ret;
+}
+
+static long do_getsockname(int fd, target_ulong target_addr,
+                           target_ulong target_addrlen)
+{
+    socklen_t addrlen = tget32(target_addrlen);
+    void *addr = alloca(addrlen);
+    long ret;
+
+    ret = get_errno(getsockname(fd, addr, &addrlen));
+    if (!is_error(ret)) {
+        host_to_target_sockaddr(target_addr, addr, addrlen);
+        tput32(target_addrlen, addrlen);
+    }
+    return ret;
+}
+
+static long do_socketpair(int domain, int type, int protocol,
+                          target_ulong target_tab)
+{
+    int tab[2];
+    long ret;
+
+    ret = get_errno(socketpair(domain, type, protocol, tab));
+    if (!is_error(ret)) {
+        tput32(target_tab, tab[0]);
+        tput32(target_tab + 4, tab[1]);
+    }
+    return ret;
+}
+
+static long do_sendto(int fd, target_ulong msg, size_t len, int flags,
+                      target_ulong target_addr, socklen_t addrlen)
+{
+    void *addr;
+    void *host_msg;
+    long ret;
+
+    host_msg = lock_user(msg, len, 1);
+    if (target_addr) {
+        addr = alloca(addrlen);
+        target_to_host_sockaddr(addr, target_addr, addrlen);
+        ret = get_errno(sendto(fd, host_msg, len, flags, addr, addrlen));
+    } else {
+        ret = get_errno(send(fd, host_msg, len, flags));
+    }
+    unlock_user(host_msg, msg, 0);
+    return ret;
+}
+
+static long do_recvfrom(int fd, target_ulong msg, size_t len, int flags,
+                        target_ulong target_addr, target_ulong target_addrlen)
+{
+    socklen_t addrlen;
+    void *addr;
+    void *host_msg;
+    long ret;
+
+    host_msg = lock_user(msg, len, 0);
+    if (target_addr) {
+        addrlen = tget32(target_addrlen);
+        addr = alloca(addrlen);
+        ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen));
+    } else {
+        addr = NULL; /* To keep compiler quiet.  */
+        ret = get_errno(recv(fd, host_msg, len, flags));
+    }
+    if (!is_error(ret)) {
+        if (target_addr) {
+            host_to_target_sockaddr(target_addr, addr, addrlen);
+            tput32(target_addrlen, addrlen);
+        }
+        unlock_user(host_msg, msg, len);
+    } else {
+        unlock_user(host_msg, msg, 0);
+    }
+    return ret;
+}
+
 static long do_socketcall(int num, target_ulong vptr)
 {
     long ret;
@@ -790,8 +1071,7 @@ static long do_socketcall(int num, target_ulong vptr)
             int domain = tgetl(vptr);
             int type = tgetl(vptr + n);
             int protocol = tgetl(vptr + 2 * n);
-
-            ret = get_errno(socket(domain, type, protocol));
+            ret = do_socket(domain, type, protocol);
        }
         break;
     case SOCKOP_bind:
@@ -799,10 +1079,7 @@ static long do_socketcall(int num, target_ulong vptr)
             int sockfd = tgetl(vptr);
             target_ulong target_addr = tgetl(vptr + n);
             socklen_t addrlen = tgetl(vptr + 2 * n);
-            void *addr = alloca(addrlen);
-
-            target_to_host_sockaddr(addr, target_addr, addrlen);
-            ret = get_errno(bind(sockfd, addr, addrlen));
+            ret = do_bind(sockfd, target_addr, addrlen);
         }
         break;
     case SOCKOP_connect:
@@ -810,17 +1087,13 @@ static long do_socketcall(int num, target_ulong vptr)
             int sockfd = tgetl(vptr);
             target_ulong target_addr = tgetl(vptr + n);
             socklen_t addrlen = tgetl(vptr + 2 * n);
-            void *addr = alloca(addrlen);
-
-            target_to_host_sockaddr(addr, target_addr, addrlen);
-            ret = get_errno(connect(sockfd, addr, addrlen));
+            ret = do_connect(sockfd, target_addr, addrlen);
         }
         break;
     case SOCKOP_listen:
         {
             int sockfd = tgetl(vptr);
             int backlog = tgetl(vptr + n);
-
             ret = get_errno(listen(sockfd, backlog));
         }
         break;
@@ -829,14 +1102,7 @@ static long do_socketcall(int num, target_ulong vptr)
             int sockfd = tgetl(vptr);
             target_ulong target_addr = tgetl(vptr + n);
             target_ulong target_addrlen = tgetl(vptr + 2 * n);
-            socklen_t addrlen = tget32(target_addrlen);
-            void *addr = alloca(addrlen);
-
-            ret = get_errno(accept(sockfd, addr, &addrlen));
-            if (!is_error(ret)) {
-                host_to_target_sockaddr(target_addr, addr, addrlen);
-                tput32(target_addrlen, addrlen);
-            }
+            ret = do_accept(sockfd, target_addr, target_addrlen);
         }
         break;
     case SOCKOP_getsockname:
@@ -844,14 +1110,7 @@ static long do_socketcall(int num, target_ulong vptr)
             int sockfd = tgetl(vptr);
             target_ulong target_addr = tgetl(vptr + n);
             target_ulong target_addrlen = tgetl(vptr + 2 * n);
-            socklen_t addrlen = tget32(target_addrlen);
-            void *addr = alloca(addrlen);
-
-            ret = get_errno(getsockname(sockfd, addr, &addrlen));
-            if (!is_error(ret)) {
-                host_to_target_sockaddr(target_addr, addr, addrlen);
-                tput32(target_addrlen, addrlen);
-            }
+            ret = do_getsockname(sockfd, target_addr, target_addrlen);
         }
         break;
     case SOCKOP_getpeername:
@@ -859,14 +1118,7 @@ static long do_socketcall(int num, target_ulong vptr)
             int sockfd = tgetl(vptr);
             target_ulong target_addr = tgetl(vptr + n);
             target_ulong target_addrlen = tgetl(vptr + 2 * n);
-            socklen_t addrlen = tget32(target_addrlen);
-            void *addr = alloca(addrlen);
-
-            ret = get_errno(getpeername(sockfd, addr, &addrlen));
-            if (!is_error(ret)) {
-                host_to_target_sockaddr(target_addr, addr, addrlen);
-                tput32(target_addrlen, addrlen);
-            }
+            ret = do_getpeername(sockfd, target_addr, target_addrlen);
         }
         break;
     case SOCKOP_socketpair:
@@ -874,14 +1126,8 @@ static long do_socketcall(int num, target_ulong vptr)
             int domain = tgetl(vptr);
             int type = tgetl(vptr + n);
             int protocol = tgetl(vptr + 2 * n);
-            target_ulong target_tab = tgetl(vptr + 3 * n);
-            int tab[2];
-
-            ret = get_errno(socketpair(domain, type, protocol, tab));
-            if (!is_error(ret)) {
-                tput32(target_tab, tab[0]);
-                tput32(target_tab + 4, tab[1]);
-            }
+            target_ulong tab = tgetl(vptr + 3 * n);
+            ret = do_socketpair(domain, type, protocol, tab);
         }
         break;
     case SOCKOP_send:
@@ -890,11 +1136,7 @@ static long do_socketcall(int num, target_ulong vptr)
             target_ulong msg = tgetl(vptr + n);
             size_t len = tgetl(vptr + 2 * n);
             int flags = tgetl(vptr + 3 * n);
-            void *host_msg;
-
-            host_msg = lock_user(msg, len, 1);
-            ret = get_errno(send(sockfd, host_msg, len, flags));
-            unlock_user(host_msg, msg, 0);
+            ret = do_sendto(sockfd, msg, len, flags, 0, 0);
         }
         break;
     case SOCKOP_recv:
@@ -903,11 +1145,7 @@ static long do_socketcall(int num, target_ulong vptr)
             target_ulong msg = tgetl(vptr + n);
             size_t len = tgetl(vptr + 2 * n);
             int flags = tgetl(vptr + 3 * n);
-            void *host_msg;
-
-            host_msg = lock_user(msg, len, 0);
-            ret = get_errno(recv(sockfd, host_msg, len, flags));
-            unlock_user(host_msg, msg, ret);
+            ret = do_recvfrom(sockfd, msg, len, flags, 0, 0);
         }
         break;
     case SOCKOP_sendto:
@@ -916,15 +1154,9 @@ static long do_socketcall(int num, target_ulong vptr)
             target_ulong msg = tgetl(vptr + n);
             size_t len = tgetl(vptr + 2 * n);
             int flags = tgetl(vptr + 3 * n);
-            target_ulong target_addr = tgetl(vptr + 4 * n);
+            target_ulong addr = tgetl(vptr + 4 * n);
             socklen_t addrlen = tgetl(vptr + 5 * n);
-            void *addr = alloca(addrlen);
-            void *host_msg;
-
-            host_msg = lock_user(msg, len, 1);
-            target_to_host_sockaddr(addr, target_addr, addrlen);
-            ret = get_errno(sendto(sockfd, host_msg, len, flags, addr, addrlen));
-            unlock_user(host_msg, msg, 0);
+            ret = do_sendto(sockfd, msg, len, flags, addr, addrlen);
         }
         break;
     case SOCKOP_recvfrom:
@@ -933,21 +1165,9 @@ static long do_socketcall(int num, target_ulong vptr)
             target_ulong msg = tgetl(vptr + n);
             size_t len = tgetl(vptr + 2 * n);
             int flags = tgetl(vptr + 3 * n);
-            target_ulong target_addr = tgetl(vptr + 4 * n);
-            target_ulong target_addrlen = tgetl(vptr + 5 * n);
-            socklen_t addrlen = tget32(target_addrlen);
-            void *addr = alloca(addrlen);
-            void *host_msg;
-
-            host_msg = lock_user(msg, len, 0);
-            ret = get_errno(recvfrom(sockfd, host_msg, len, flags, addr, &addrlen));
-            if (!is_error(ret)) {
-                host_to_target_sockaddr(target_addr, addr, addrlen);
-                tput32(target_addrlen, addrlen);
-                unlock_user(host_msg, msg, len);
-            } else {
-                unlock_user(host_msg, msg, 0);
-            }
+            target_ulong addr = tgetl(vptr + 4 * n);
+            target_ulong addrlen = tgetl(vptr + 5 * n);
+            ret = do_recvfrom(sockfd, msg, len, flags, addr, addrlen);
         }
         break;
     case SOCKOP_shutdown:
@@ -963,46 +1183,14 @@ static long do_socketcall(int num, target_ulong vptr)
         {
             int fd;
             target_ulong target_msg;
-            struct target_msghdr *msgp;
-            struct msghdr msg;
-            int flags, count;
-            struct iovec *vec;
-            target_ulong target_vec;
-            int send = (num == SOCKOP_sendmsg);
-
-            target_msg = tgetl(vptr + n);
-            lock_user_struct(msgp, target_msg, 1);
-            if (msgp->msg_name) {
-                msg.msg_namelen = tswap32(msgp->msg_namelen);
-                msg.msg_name = alloca(msg.msg_namelen);
-                target_to_host_sockaddr(msg.msg_name, tswapl(msgp->msg_name),
-                                        msg.msg_namelen);
-            } else {
-                msg.msg_name = NULL;
-                msg.msg_namelen = 0;
-            }
-            msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
-            msg.msg_control = alloca(msg.msg_controllen);
-            msg.msg_flags = tswap32(msgp->msg_flags);
-
-            count = tswapl(msgp->msg_iovlen);
-            vec = alloca(count * sizeof(struct iovec));
-            target_vec = tswapl(msgp->msg_iov);
-            lock_iovec(vec, target_vec, count, send);
-            msg.msg_iovlen = count;
-            msg.msg_iov = vec;
+            int flags;
 
             fd = tgetl(vptr);
+            target_msg = tgetl(vptr + n);
             flags = tgetl(vptr + 2 * n);
-            if (send) {
-                target_to_host_cmsg(&msg, msgp);
-                ret = get_errno(sendmsg(fd, &msg, flags));
-            } else {
-                ret = get_errno(recvmsg(fd, &msg, flags));
-                if (!is_error(ret))
-                  host_to_target_cmsg(msgp, &msg);
-            }
-            unlock_iovec(vec, target_vec, count, !send);
+
+            ret = do_sendrecvmsg(fd, target_msg, flags, 
+                                 (num == SOCKOP_sendmsg));
         }
         break;
     case SOCKOP_setsockopt:
@@ -1035,7 +1223,6 @@ static long do_socketcall(int num, target_ulong vptr)
     return ret;
 }
 
-
 #define N_SHM_REGIONS  32
 
 static struct shm_region {
@@ -1043,6 +1230,12 @@ static struct shm_region {
     uint32_t   size;
 } shm_regions[N_SHM_REGIONS];
 
+union semun {
+       int val;
+       struct senid_ds *buf;
+       unsigned short *array;
+};
+
 /* ??? This only works with linear mappings.  */
 static long do_ipc(long call, long first, long second, long third,
                   long ptr, long fifth)
@@ -1057,6 +1250,52 @@ static long do_ipc(long call, long first, long second, long third,
     call &= 0xffff;
 
     switch (call) {
+    case IPCOP_semop:
+        ret = get_errno(semop(first,(struct sembuf *) ptr, second));
+        break;
+
+    case IPCOP_semget:
+        ret = get_errno(semget(first, second, third));
+        break;
+
+    case IPCOP_semctl:
+        ret = get_errno(semctl(first, second, third, ((union semun*)ptr)->val));
+
+        break;
+
+    case IPCOP_semtimedop:
+        gemu_log("Unsupported ipc call: %ld (version %d)\n", call, version);
+        ret = -ENOSYS;
+        break;
+
+       case IPCOP_msgget:
+               ret = get_errno(msgget(first, second));
+               break;
+
+       case IPCOP_msgsnd:
+               ret = get_errno(msgsnd(first, (struct msgbuf *) ptr, second, third));
+               break;
+
+       case IPCOP_msgctl:
+               ret = get_errno(msgctl(first, second, (struct msqid_ds *) ptr));
+               break;
+
+       case IPCOP_msgrcv:
+               {
+                       struct ipc_kludge
+                       {
+                               void *__unbounded msgp;
+                               long int msgtyp;
+                       };
+
+                       struct ipc_kludge *foo = (struct ipc_kludge *) ptr;
+                       struct msgbuf *msgp = (struct msgbuf *) foo->msgp;
+
+                       ret = get_errno(msgrcv(first, msgp, second, 0, third));
+
+               }
+               break;
+
     case IPCOP_shmat:
        /* SHM_* flags are the same on all linux platforms */
        ret = get_errno((long) shmat(first, (void *) ptr, second));
@@ -1593,8 +1832,7 @@ int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
         ts->next = first_task_state;
         first_task_state = ts;
         /* we create a new CPU instance. */
-        new_env = cpu_init();
-        memcpy(new_env, env, sizeof(CPUState));
+        new_env = cpu_copy(env);
 #if defined(TARGET_I386)
         if (!newsp)
             newsp = env->regs[R_ESP];
@@ -1606,9 +1844,22 @@ int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
         new_env->regs[13] = newsp;
         new_env->regs[0] = 0;
 #elif defined(TARGET_SPARC)
+        if (!newsp)
+            newsp = env->regwptr[22];
+        new_env->regwptr[22] = newsp;
+        new_env->regwptr[0] = 0;
+       /* XXXXX */
         printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
+#elif defined(TARGET_M68K)
+        if (!newsp)
+            newsp = env->aregs[7];
+        new_env->aregs[7] = newsp;
+        new_env->dregs[0] = 0;
+        /* ??? is this sufficient?  */
 #elif defined(TARGET_MIPS)
-        printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
+        if (!newsp)
+            newsp = env->gpr[29];
+        new_env->gpr[29] = newsp;
 #elif defined(TARGET_PPC)
         if (!newsp)
             newsp = env->gpr[1];
@@ -1623,6 +1874,16 @@ int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
          newsp = env->gregs[15];
        new_env->gregs[15] = newsp;
        /* XXXXX */
+#elif defined(TARGET_ALPHA)
+       if (!newsp)
+         newsp = env->ir[30];
+       new_env->ir[30] = newsp;
+        /* ? */
+        {
+            int i;
+            for (i = 7; i < 30; i++)
+                new_env->ir[i] = 0;
+        }
 #else
 #error unsupported target CPU
 #endif
@@ -1645,10 +1906,19 @@ static long do_fcntl(int fd, int cmd, target_ulong arg)
 {
     struct flock fl;
     struct target_flock *target_fl;
+    struct flock64 fl64;
+    struct target_flock64 *target_fl64;
     long ret;
 
     switch(cmd) {
     case TARGET_F_GETLK:
+        lock_user_struct(target_fl, arg, 1);
+        fl.l_type = tswap16(target_fl->l_type);
+        fl.l_whence = tswap16(target_fl->l_whence);
+        fl.l_start = tswapl(target_fl->l_start);
+        fl.l_len = tswapl(target_fl->l_len);
+        fl.l_pid = tswapl(target_fl->l_pid);
+        unlock_user_struct(target_fl, arg, 0);
         ret = fcntl(fd, cmd, &fl);
         if (ret == 0) {
             lock_user_struct(target_fl, arg, 0);
@@ -1674,10 +1944,34 @@ static long do_fcntl(int fd, int cmd, target_ulong arg)
         break;
         
     case TARGET_F_GETLK64:
+        lock_user_struct(target_fl64, arg, 1);
+        fl64.l_type = tswap16(target_fl64->l_type) >> 1;
+        fl64.l_whence = tswap16(target_fl64->l_whence);
+        fl64.l_start = tswapl(target_fl64->l_start);
+        fl64.l_len = tswapl(target_fl64->l_len);
+        fl64.l_pid = tswap16(target_fl64->l_pid);
+        unlock_user_struct(target_fl64, arg, 0);
+        ret = fcntl(fd, cmd >> 1, &fl64);
+        if (ret == 0) {
+            lock_user_struct(target_fl64, arg, 0);
+            target_fl64->l_type = tswap16(fl64.l_type) >> 1;
+            target_fl64->l_whence = tswap16(fl64.l_whence);
+            target_fl64->l_start = tswapl(fl64.l_start);
+            target_fl64->l_len = tswapl(fl64.l_len);
+            target_fl64->l_pid = tswapl(fl64.l_pid);
+            unlock_user_struct(target_fl64, arg, 1);
+        }
+               break;
     case TARGET_F_SETLK64:
     case TARGET_F_SETLKW64:
-        ret = -1;
-        errno = EINVAL;
+        lock_user_struct(target_fl64, arg, 1);
+        fl64.l_type = tswap16(target_fl64->l_type) >> 1;
+        fl64.l_whence = tswap16(target_fl64->l_whence);
+        fl64.l_start = tswapl(target_fl64->l_start);
+        fl64.l_len = tswapl(target_fl64->l_len);
+        fl64.l_pid = tswap16(target_fl64->l_pid);
+        unlock_user_struct(target_fl64, arg, 0);
+               ret = fcntl(fd, cmd >> 1, &fl64);
         break;
 
     case F_GETFL:
@@ -1882,6 +2176,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_fork:
         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
         break;
+#ifdef TARGET_NR_waitpid
     case TARGET_NR_waitpid:
         {
             int status;
@@ -1890,11 +2185,14 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                 tput32(arg2, status);
         }
         break;
+#endif
+#ifdef TARGET_NR_creat /* not on alpha */
     case TARGET_NR_creat:
         p = lock_user_string(arg1);
         ret = get_errno(creat(p, arg2));
         unlock_user(p, arg1, 0);
         break;
+#endif
     case TARGET_NR_link:
         {
             void * p2;
@@ -2002,17 +2300,34 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_lseek:
         ret = get_errno(lseek(arg1, arg2, arg3));
         break;
+#ifdef TARGET_NR_getxpid
+    case TARGET_NR_getxpid:
+#else
     case TARGET_NR_getpid:
+#endif
         ret = get_errno(getpid());
         break;
     case TARGET_NR_mount:
-        /* need to look at the data field */
-        goto unimplemented;
+               {
+                       /* need to look at the data field */
+                       void *p2, *p3;
+                       p = lock_user_string(arg1);
+                       p2 = lock_user_string(arg2);
+                       p3 = lock_user_string(arg3);
+                       ret = get_errno(mount(p, p2, p3, (unsigned long)arg4, (const void *)arg5));
+                       unlock_user(p, arg1, 0);
+                       unlock_user(p2, arg2, 0);
+                       unlock_user(p3, arg3, 0);
+                       break;
+               }
+#ifdef TARGET_NR_umount
     case TARGET_NR_umount:
         p = lock_user_string(arg1);
         ret = get_errno(umount(p));
         unlock_user(p, arg1, 0);
         break;
+#endif
+#ifdef TARGET_NR_stime /* not on alpha */
     case TARGET_NR_stime:
         {
             time_t host_time;
@@ -2020,18 +2335,24 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             ret = get_errno(stime(&host_time));
         }
         break;
+#endif
     case TARGET_NR_ptrace:
         goto unimplemented;
+#ifdef TARGET_NR_alarm /* not on alpha */
     case TARGET_NR_alarm:
         ret = alarm(arg1);
         break;
+#endif
 #ifdef TARGET_NR_oldfstat
     case TARGET_NR_oldfstat:
         goto unimplemented;
 #endif
+#ifdef TARGET_NR_pause /* not on alpha */
     case TARGET_NR_pause:
         ret = get_errno(pause());
         break;
+#endif
+#ifdef TARGET_NR_utime
     case TARGET_NR_utime:
         {
             struct utimbuf tbuf, *host_tbuf;
@@ -2050,6 +2371,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             unlock_user(p, arg1, 0);
         }
         break;
+#endif
     case TARGET_NR_utimes:
         {
             struct timeval *tvp, tv[2];
@@ -2079,9 +2401,11 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
         ret = get_errno(access(p, arg2));
         unlock_user(p, arg1, 0);
         break;
+#ifdef TARGET_NR_nice /* not on alpha */
     case TARGET_NR_nice:
         ret = get_errno(nice(arg1));
         break;
+#endif
 #ifdef TARGET_NR_ftime
     case TARGET_NR_ftime:
         goto unimplemented;
@@ -2121,8 +2445,13 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             int host_pipe[2];
             ret = get_errno(pipe(host_pipe));
             if (!is_error(ret)) {
+#if defined(TARGET_MIPS)
+               ((CPUMIPSState*)cpu_env)->gpr[3] = host_pipe[1];
+               ret = host_pipe[0];
+#else
                 tput32(arg1, host_pipe[0]);
                 tput32(arg1 + 4, host_pipe[1]);
+#endif
             }
         }
         break;
@@ -2146,19 +2475,22 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_prof:
         goto unimplemented;
 #endif
+#ifdef TARGET_NR_signal
     case TARGET_NR_signal:
         goto unimplemented;
-
+#endif
     case TARGET_NR_acct:
         p = lock_user_string(arg1);
         ret = get_errno(acct(path(p)));
         unlock_user(p, arg1, 0);
         break;
+#ifdef TARGET_NR_umount2 /* not on alpha */
     case TARGET_NR_umount2:
         p = lock_user_string(arg1);
         ret = get_errno(umount2(p, arg2));
         unlock_user(p, arg1, 0);
         break;
+#endif
 #ifdef TARGET_NR_lock
     case TARGET_NR_lock:
         goto unimplemented;
@@ -2197,17 +2529,21 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_dup2:
         ret = get_errno(dup2(arg1, arg2));
         break;
+#ifdef TARGET_NR_getppid /* not on alpha */
     case TARGET_NR_getppid:
         ret = get_errno(getppid());
         break;
+#endif
     case TARGET_NR_getpgrp:
         ret = get_errno(getpgrp());
         break;
     case TARGET_NR_setsid:
         ret = get_errno(setsid());
         break;
+#ifdef TARGET_NR_sigaction
     case TARGET_NR_sigaction:
         {
+#if !defined(TARGET_MIPS)
             struct target_old_sigaction *old_act;
             struct target_sigaction act, oact, *pact;
             if (arg2) {
@@ -2230,8 +2566,36 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                 old_act->sa_restorer = oact.sa_restorer;
                 unlock_user_struct(old_act, arg3, 1);
             }
+#else
+           struct target_sigaction act, oact, *pact, *old_act;
+
+           if (arg2) {
+               lock_user_struct(old_act, arg2, 1);
+               act._sa_handler = old_act->_sa_handler;
+               target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
+               act.sa_flags = old_act->sa_flags;
+               unlock_user_struct(old_act, arg2, 0);
+               pact = &act;
+           } else {
+               pact = NULL;
+           }
+
+           ret = get_errno(do_sigaction(arg1, pact, &oact));
+
+           if (!is_error(ret) && arg3) {
+               lock_user_struct(old_act, arg3, 0);
+               old_act->_sa_handler = oact._sa_handler;
+               old_act->sa_flags = oact.sa_flags;
+               old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
+               old_act->sa_mask.sig[1] = 0;
+               old_act->sa_mask.sig[2] = 0;
+               old_act->sa_mask.sig[3] = 0;
+               unlock_user_struct(old_act, arg3, 1);
+           }
+#endif
         }
         break;
+#endif
     case TARGET_NR_rt_sigaction:
         {
             struct target_sigaction *act;
@@ -2252,6 +2616,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                 unlock_user_struct(oact, arg3, 1);
         }
         break;
+#ifdef TARGET_NR_sgetmask /* not on alpha */
     case TARGET_NR_sgetmask:
         {
             sigset_t cur_set;
@@ -2261,6 +2626,8 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             ret = target_set;
         }
         break;
+#endif
+#ifdef TARGET_NR_ssetmask /* not on alpha */
     case TARGET_NR_ssetmask:
         {
             sigset_t set, oset, cur_set;
@@ -2273,6 +2640,8 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             ret = target_set;
         }
         break;
+#endif
+#ifdef TARGET_NR_sigprocmask
     case TARGET_NR_sigprocmask:
         {
             int how = arg1;
@@ -2309,6 +2678,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#endif
     case TARGET_NR_rt_sigprocmask:
         {
             int how = arg1;
@@ -2345,6 +2715,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#ifdef TARGET_NR_sigpending
     case TARGET_NR_sigpending:
         {
             sigset_t set;
@@ -2356,6 +2727,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#endif
     case TARGET_NR_rt_sigpending:
         {
             sigset_t set;
@@ -2367,6 +2739,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#ifdef TARGET_NR_sigsuspend
     case TARGET_NR_sigsuspend:
         {
             sigset_t set;
@@ -2376,6 +2749,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             ret = get_errno(sigsuspend(&set));
         }
         break;
+#endif
     case TARGET_NR_rt_sigsuspend:
         {
             sigset_t set;
@@ -2417,10 +2791,12 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
         }
         break;
+#ifdef TARGET_NR_sigreturn
     case TARGET_NR_sigreturn:
         /* NOTE: ret is eax, so not transcoding must be done */
         ret = do_sigreturn(cpu_env);
         break;
+#endif
     case TARGET_NR_rt_sigreturn:
         /* NOTE: ret is eax, so not transcoding must be done */
         ret = do_rt_sigreturn(cpu_env);
@@ -2526,19 +2902,26 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             unlock_user(p, arg1, 0);
         }
         break;
+#ifdef TARGET_NR_uselib
     case TARGET_NR_uselib:
         goto unimplemented;
+#endif
+#ifdef TARGET_NR_swapon
     case TARGET_NR_swapon:
         p = lock_user_string(arg1);
         ret = get_errno(swapon(p, arg2));
         unlock_user(p, arg1, 0);
         break;
+#endif
     case TARGET_NR_reboot:
         goto unimplemented;
+#ifdef TARGET_NR_readdir
     case TARGET_NR_readdir:
         goto unimplemented;
+#endif
+#ifdef TARGET_NR_mmap
     case TARGET_NR_mmap:
-#if defined(TARGET_I386) || defined(TARGET_ARM)
+#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_M68K)
         {
             target_ulong *v;
             target_ulong v1, v2, v3, v4, v5, v6;
@@ -2561,9 +2944,10 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                                     arg6));
 #endif
         break;
+#endif
 #ifdef TARGET_NR_mmap2
     case TARGET_NR_mmap2:
-#if defined(TARGET_SPARC)
+#if defined(TARGET_SPARC) || defined(TARGET_MIPS)
 #define MMAP_SHIFT 12
 #else
 #define MMAP_SHIFT TARGET_PAGE_BITS
@@ -2580,25 +2964,37 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_mprotect:
         ret = get_errno(target_mprotect(arg1, arg2, arg3));
         break;
+#ifdef TARGET_NR_mremap
     case TARGET_NR_mremap:
         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
         break;
+#endif
         /* ??? msync/mlock/munlock are broken for softmmu.  */
+#ifdef TARGET_NR_msync
     case TARGET_NR_msync:
         ret = get_errno(msync(g2h(arg1), arg2, arg3));
         break;
+#endif
+#ifdef TARGET_NR_mlock
     case TARGET_NR_mlock:
         ret = get_errno(mlock(g2h(arg1), arg2));
         break;
+#endif
+#ifdef TARGET_NR_munlock
     case TARGET_NR_munlock:
         ret = get_errno(munlock(g2h(arg1), arg2));
         break;
+#endif
+#ifdef TARGET_NR_mlockall
     case TARGET_NR_mlockall:
         ret = get_errno(mlockall(arg1));
         break;
+#endif
+#ifdef TARGET_NR_munlockall
     case TARGET_NR_munlockall:
         ret = get_errno(munlockall());
         break;
+#endif
     case TARGET_NR_truncate:
         p = lock_user_string(arg1);
         ret = get_errno(truncate(p, arg2));
@@ -2676,11 +3072,103 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_ioperm:
         goto unimplemented;
 #endif
+#ifdef TARGET_NR_socketcall
     case TARGET_NR_socketcall:
         ret = do_socketcall(arg1, arg2);
         break;
+#endif
+#ifdef TARGET_NR_accept
+    case TARGET_NR_accept:
+        ret = do_accept(arg1, arg2, arg3);
+        break;
+#endif
+#ifdef TARGET_NR_bind
+    case TARGET_NR_bind:
+        ret = do_bind(arg1, arg2, arg3);
+        break;
+#endif
+#ifdef TARGET_NR_connect
+    case TARGET_NR_connect:
+        ret = do_connect(arg1, arg2, arg3);
+        break;
+#endif
+#ifdef TARGET_NR_getpeername
+    case TARGET_NR_getpeername:
+        ret = do_getpeername(arg1, arg2, arg3);
+        break;
+#endif
+#ifdef TARGET_NR_getsockname
+    case TARGET_NR_getsockname:
+        ret = do_getsockname(arg1, arg2, arg3);
+        break;
+#endif
+#ifdef TARGET_NR_getsockopt
+    case TARGET_NR_getsockopt:
+        ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5);
+        break;
+#endif
+#ifdef TARGET_NR_listen
+    case TARGET_NR_listen:
+        ret = get_errno(listen(arg1, arg2));
+        break;
+#endif
+#ifdef TARGET_NR_recv
+    case TARGET_NR_recv:
+        ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
+        break;
+#endif
+#ifdef TARGET_NR_recvfrom
+    case TARGET_NR_recvfrom:
+        ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
+        break;
+#endif
+#ifdef TARGET_NR_recvmsg
+    case TARGET_NR_recvmsg:
+        ret = do_sendrecvmsg(arg1, arg2, arg3, 0);
+        break;
+#endif
+#ifdef TARGET_NR_send
+    case TARGET_NR_send:
+        ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0);
+        break;
+#endif
+#ifdef TARGET_NR_sendmsg
+    case TARGET_NR_sendmsg:
+        ret = do_sendrecvmsg(arg1, arg2, arg3, 1);
+        break;
+#endif
+#ifdef TARGET_NR_sendto
+    case TARGET_NR_sendto:
+        ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
+        break;
+#endif
+#ifdef TARGET_NR_shutdown
+    case TARGET_NR_shutdown:
+        ret = get_errno(shutdown(arg1, arg2));
+        break;
+#endif
+#ifdef TARGET_NR_socket
+    case TARGET_NR_socket:
+        ret = do_socket(arg1, arg2, arg3);
+        break;
+#endif
+#ifdef TARGET_NR_socketpair
+    case TARGET_NR_socketpair:
+        ret = do_socketpair(arg1, arg2, arg3, arg4);
+        break;
+#endif
+#ifdef TARGET_NR_setsockopt
+    case TARGET_NR_setsockopt:
+        ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
+        break;
+#endif
+
     case TARGET_NR_syslog:
-        goto unimplemented;
+        p = lock_user_string(arg2);
+        ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
+        unlock_user(p, arg2, 0);
+        break;
+
     case TARGET_NR_setitimer:
         {
             struct itimerval value, ovalue, *pvalue;
@@ -2732,11 +3220,15 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
         do_stat:
             if (!is_error(ret)) {
                 struct target_stat *target_st;
-                
+
                 lock_user_struct(target_st, arg2, 0);
+#if defined(TARGET_MIPS)
+                target_st->st_dev = tswap32(st.st_dev);
+#else
                 target_st->st_dev = tswap16(st.st_dev);
+#endif
                 target_st->st_ino = tswapl(st.st_ino);
-#if defined(TARGET_PPC)
+#if defined(TARGET_PPC) || defined(TARGET_MIPS)
                 target_st->st_mode = tswapl(st.st_mode); /* XXX: check this */
                 target_st->st_uid = tswap32(st.st_uid);
                 target_st->st_gid = tswap32(st.st_gid);
@@ -2745,8 +3237,14 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                 target_st->st_uid = tswap16(st.st_uid);
                 target_st->st_gid = tswap16(st.st_gid);
 #endif
+#if defined(TARGET_MIPS)
+               /* If this is the same on PPC, then just merge w/ the above ifdef */
+                target_st->st_nlink = tswapl(st.st_nlink);
+                target_st->st_rdev = tswapl(st.st_rdev);
+#else
                 target_st->st_nlink = tswap16(st.st_nlink);
                 target_st->st_rdev = tswap16(st.st_rdev);
+#endif
                 target_st->st_size = tswapl(st.st_size);
                 target_st->st_blksize = tswapl(st.st_blksize);
                 target_st->st_blocks = tswapl(st.st_blocks);
@@ -2797,11 +3295,13 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#ifdef TARGET_NR_swapoff
     case TARGET_NR_swapoff:
         p = lock_user_string(arg1);
         ret = get_errno(swapoff(p));
         unlock_user(p, arg1, 0);
         break;
+#endif
     case TARGET_NR_sysinfo:
         {
             struct target_sysinfo *target_value;
@@ -2829,9 +3329,11 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#ifdef TARGET_NR_ipc
     case TARGET_NR_ipc:
        ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6);
        break;
+#endif
     case TARGET_NR_fsync:
         ret = get_errno(fsync(arg1));
         break;
@@ -2861,6 +3363,9 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                 /* Overrite the native machine name with whatever is being
                    emulated. */
                 strcpy (buf->machine, UNAME_MACHINE);
+                /* Allow the user to override the reported release.  */
+                if (qemu_uname_release && *qemu_uname_release)
+                  strcpy (buf->release, qemu_uname_release);
             }
             unlock_user_struct(buf, arg1, 1);
         }
@@ -2869,18 +3374,24 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_modify_ldt:
         ret = get_errno(do_modify_ldt(cpu_env, arg1, arg2, arg3));
         break;
+#if !defined(TARGET_X86_64)
     case TARGET_NR_vm86old:
         goto unimplemented;
     case TARGET_NR_vm86:
         ret = do_vm86(cpu_env, arg1, arg2);
         break;
+#endif
 #endif
     case TARGET_NR_adjtimex:
         goto unimplemented;
+#ifdef TARGET_NR_create_module
     case TARGET_NR_create_module:
+#endif
     case TARGET_NR_init_module:
     case TARGET_NR_delete_module:
+#ifdef TARGET_NR_get_kernel_syms
     case TARGET_NR_get_kernel_syms:
+#endif
         goto unimplemented;
     case TARGET_NR_quotactl:
         goto unimplemented;
@@ -2890,15 +3401,22 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_fchdir:
         ret = get_errno(fchdir(arg1));
         break;
+#ifdef TARGET_NR_bdflush /* not on x86_64 */
     case TARGET_NR_bdflush:
         goto unimplemented;
+#endif
+#ifdef TARGET_NR_sysfs
     case TARGET_NR_sysfs:
         goto unimplemented;
+#endif
     case TARGET_NR_personality:
         ret = get_errno(personality(arg1));
         break;
+#ifdef TARGET_NR_afs_syscall
     case TARGET_NR_afs_syscall:
         goto unimplemented;
+#endif
+#ifdef TARGET_NR__llseek /* Not on alpha */
     case TARGET_NR__llseek:
         {
 #if defined (__x86_64__)
@@ -2911,6 +3429,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
 #endif
         }
         break;
+#endif
     case TARGET_NR_getdents:
 #if TARGET_LONG_SIZE != 4
         goto unimplemented;
@@ -2950,7 +3469,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                    strncpy(tde->d_name, de->d_name, tnamelen);
                     de = (struct dirent *)((char *)de + reclen);
                     len -= reclen;
-                    tde = (struct dirent *)((char *)tde + treclen);
+                    tde = (struct target_dirent *)((char *)tde + treclen);
                    count1 += treclen;
                 }
                ret = count1;
@@ -3012,9 +3531,12 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
         }
         break;
 #endif /* TARGET_NR_getdents64 */
+#ifdef TARGET_NR__newselect
     case TARGET_NR__newselect:
         ret = do_select(arg1, arg2, arg3, arg4, arg5);
         break;
+#endif
+#ifdef TARGET_NR_poll
     case TARGET_NR_poll:
         {
             struct target_pollfd *target_pfd;
@@ -3040,6 +3562,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             unlock_user(target_pfd, arg1, ret);
         }
         break;
+#endif
     case TARGET_NR_flock:
         /* NOTE: the flock constant seems to be the same for every
            Linux platform */
@@ -3070,9 +3593,11 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_getsid:
         ret = get_errno(getsid(arg1));
         break;
+#if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
     case TARGET_NR_fdatasync:
         ret = get_errno(fdatasync(arg1));
         break;
+#endif
     case TARGET_NR__sysctl:
         /* We don't implement this, but ENODIR is always a safe
            return value. */
@@ -3141,12 +3666,30 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#ifdef TARGET_NR_query_module
     case TARGET_NR_query_module:
         goto unimplemented;
+#endif
+#ifdef TARGET_NR_nfsservctl
     case TARGET_NR_nfsservctl:
         goto unimplemented;
+#endif
     case TARGET_NR_prctl:
-        goto unimplemented;
+        switch (arg1)
+            {
+            case PR_GET_PDEATHSIG:
+                {
+                    int deathsig;
+                    ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
+                    if (!is_error(ret) && arg2)
+                        tput32(arg2, deathsig);
+                }
+                break;
+            default:
+                ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
+                break;
+            }
+        break;
 #ifdef TARGET_NR_pread
     case TARGET_NR_pread:
         page_unprotect_range(arg2, arg3);
@@ -3565,15 +4108,51 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
 #if TARGET_LONG_BITS == 32
     case TARGET_NR_fcntl64:
     {
+       int cmd;
        struct flock64 fl;
        struct target_flock64 *target_fl;
 #ifdef TARGET_ARM
        struct target_eabi_flock64 *target_efl;
 #endif
 
+        switch(arg2){
+        case TARGET_F_GETLK64:
+            cmd = F_GETLK64;
+            break;
+        case TARGET_F_SETLK64:
+            cmd = F_SETLK64;
+            break;
+        case TARGET_F_SETLKW64:
+            cmd = F_SETLK64;
+            break;
+        default:
+            cmd = arg2;
+            break;
+        }
+
         switch(arg2) {
-        case F_GETLK64:
-            ret = get_errno(fcntl(arg1, arg2, &fl));
+        case TARGET_F_GETLK64:
+#ifdef TARGET_ARM
+            if (((CPUARMState *)cpu_env)->eabi) {
+                lock_user_struct(target_efl, arg3, 1);
+                fl.l_type = tswap16(target_efl->l_type);
+                fl.l_whence = tswap16(target_efl->l_whence);
+                fl.l_start = tswap64(target_efl->l_start);
+                fl.l_len = tswap64(target_efl->l_len);
+                fl.l_pid = tswapl(target_efl->l_pid);
+                unlock_user_struct(target_efl, arg3, 0);
+            } else
+#endif
+            {
+                lock_user_struct(target_fl, arg3, 1);
+                fl.l_type = tswap16(target_fl->l_type);
+                fl.l_whence = tswap16(target_fl->l_whence);
+                fl.l_start = tswap64(target_fl->l_start);
+                fl.l_len = tswap64(target_fl->l_len);
+                fl.l_pid = tswapl(target_fl->l_pid);
+                unlock_user_struct(target_fl, arg3, 0);
+            }
+            ret = get_errno(fcntl(arg1, cmd, &fl));
            if (ret == 0) {
 #ifdef TARGET_ARM
                 if (((CPUARMState *)cpu_env)->eabi) {
@@ -3598,8 +4177,8 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
            }
            break;
 
-        case F_SETLK64:
-        case F_SETLKW64:
+        case TARGET_F_SETLK64:
+        case TARGET_F_SETLKW64:
 #ifdef TARGET_ARM
             if (((CPUARMState *)cpu_env)->eabi) {
                 lock_user_struct(target_efl, arg3, 1);
@@ -3620,15 +4199,21 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
                 fl.l_pid = tswapl(target_fl->l_pid);
                 unlock_user_struct(target_fl, arg3, 0);
             }
-            ret = get_errno(fcntl(arg1, arg2, &fl));
+            ret = get_errno(fcntl(arg1, cmd, &fl));
            break;
         default:
-            ret = get_errno(do_fcntl(arg1, arg2, arg3));
+            ret = get_errno(do_fcntl(arg1, cmd, arg3));
             break;
         }
        break;
     }
 #endif
+#ifdef TARGET_NR_cacheflush
+    case TARGET_NR_cacheflush:
+        /* self-modifying code is handled automatically, so nothing needed */
+        ret = 0;
+        break;
+#endif
 #ifdef TARGET_NR_security
     case TARGET_NR_security:
         goto unimplemented;
@@ -3641,8 +4226,10 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
     case TARGET_NR_gettid:
         ret = get_errno(gettid());
         break;
+#ifdef TARGET_NR_readahead
     case TARGET_NR_readahead:
         goto unimplemented;
+#endif
 #ifdef TARGET_NR_setxattr
     case TARGET_NR_setxattr:
     case TARGET_NR_lsetxattr:
@@ -3660,13 +4247,56 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
 #endif
 #ifdef TARGET_NR_set_thread_area
     case TARGET_NR_set_thread_area:
+#ifdef TARGET_MIPS
+      ((CPUMIPSState *) cpu_env)->tls_value = arg1;
+      ret = 0;
+      break;
+#else
+      goto unimplemented_nowarn;
+#endif
+#endif
+#ifdef TARGET_NR_get_thread_area
     case TARGET_NR_get_thread_area:
         goto unimplemented_nowarn;
 #endif
+#ifdef TARGET_NR_getdomainname
+    case TARGET_NR_getdomainname:
+        goto unimplemented_nowarn;
+#endif
+
+#ifdef TARGET_NR_clock_gettime
+    case TARGET_NR_clock_gettime:
+    {
+        struct timespec ts;
+        ret = get_errno(clock_gettime(arg1, &ts));
+        if (!is_error(ret)) {
+            host_to_target_timespec(arg2, &ts);
+        }
+        break;
+    }
+#endif
+#ifdef TARGET_NR_clock_getres
+    case TARGET_NR_clock_getres:
+    {
+        struct timespec ts;
+        ret = get_errno(clock_getres(arg1, &ts));
+        if (!is_error(ret)) {
+            host_to_target_timespec(arg2, &ts);
+        }
+        break;
+    }
+#endif
+
+#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
+    case TARGET_NR_set_tid_address:
+      ret = get_errno(set_tid_address((int *) arg1));
+      break;
+#endif
+
     default:
     unimplemented:
         gemu_log("qemu: Unsupported syscall: %d\n", num);
-#if defined(TARGET_NR_setxattr) || defined(TARGET_NR_set_thread_area)
+#if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname)
     unimplemented_nowarn:
 #endif
         ret = -ENOSYS;
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