linux-user/strace.c

   1 #include <stdio.h>
   2 #include <sys/ipc.h>
   3 #include <sys/msg.h>
   4 #include <sys/sem.h>
   5 #include <sys/shm.h>
   6 #include <sys/select.h>
   7 #include <sys/types.h>
   8 #include <sys/mount.h>
   9 #include <sys/mman.h>
  10 #include <unistd.h>
  11 #include <sched.h>
  12 #include "qemu.h"
  13
  14 int do_strace=0;
  15
  16 struct syscallname {
  17     int nr;
  18     const char *name;
  19     const char *format;
  20     void (*call)(const struct syscallname *,
  21                  abi_long, abi_long, abi_long,
  22                  abi_long, abi_long, abi_long);
  23     void (*result)(const struct syscallname *, abi_long);
  24 };
  25
  26 #ifdef __GNUC__
  27 /*
  28  * It is possible that target doesn't have syscall that uses
  29  * following flags but we don't want the compiler to warn
  30  * us about them being unused.  Same applies to utility print
  31  * functions.  It is ok to keep them while not used.
  32  */
  33 #define UNUSED __attribute__ ((unused))
  34 #else
  35 #define UNUSED
  36 #endif
  37
  38 /*
  39  * Structure used to translate flag values into strings.  This is
  40  * similar that is in the actual strace tool.
  41  */
  42 struct flags {
  43     abi_long    f_value;  /* flag */
  44     const char  *f_string; /* stringified flag */
  45 };
  46
  47 /* common flags for all architectures */
  48 #define FLAG_GENERIC(name) { name, #name }
  49 /* target specific flags (syscall_defs.h has TARGET_<flag>) */
  50 #define FLAG_TARGET(name)  { TARGET_ ## name, #name }
  51 /* end of flags array */
  52 #define FLAG_END           { 0, NULL }
  53
  54 UNUSED static const char *get_comma(int);
  55 UNUSED static void print_pointer(abi_long, int);
  56 UNUSED static void print_flags(const struct flags *, abi_long, int);
  57 UNUSED static void print_at_dirfd(abi_long, int);
  58 UNUSED static void print_file_mode(abi_long, int);
  59 UNUSED static void print_open_flags(abi_long, int);
  60 UNUSED static void print_syscall_prologue(const struct syscallname *);
  61 UNUSED static void print_syscall_epilogue(const struct syscallname *);
  62 UNUSED static void print_string(abi_long, int);
  63 UNUSED static void print_raw_param(const char *, abi_long, int);
  64 UNUSED static void print_timeval(abi_ulong, int);
  65 UNUSED static void print_number(abi_long, int);
  66 UNUSED static void print_signal(abi_ulong, int);
  67
  68 /*
  69  * Utility functions
  70  */
  71 static void
  72 print_ipc_cmd(int cmd)
  73 {
  74 #define output_cmd(val) \
  75 if( cmd == val ) { \
  76     gemu_log(#val); \
  77     return; \
  78 }
  79
  80     cmd &= 0xff;
  81
  82     /* General IPC commands */
  83     output_cmd( IPC_RMID );
  84     output_cmd( IPC_SET );
  85     output_cmd( IPC_STAT );
  86     output_cmd( IPC_INFO );
  87     /* msgctl() commands */
  88     #ifdef __USER_MISC
  89     output_cmd( MSG_STAT );
  90     output_cmd( MSG_INFO );
  91     #endif
  92     /* shmctl() commands */
  93     output_cmd( SHM_LOCK );
  94     output_cmd( SHM_UNLOCK );
  95     output_cmd( SHM_STAT );
  96     output_cmd( SHM_INFO );
  97     /* semctl() commands */
  98     output_cmd( GETPID );
  99     output_cmd( GETVAL );
 100     output_cmd( GETALL );
 101     output_cmd( GETNCNT );
 102     output_cmd( GETZCNT );
 103     output_cmd( SETVAL );
 104     output_cmd( SETALL );
 105     output_cmd( SEM_STAT );
 106     output_cmd( SEM_INFO );
 107     output_cmd( IPC_RMID );
 108     output_cmd( IPC_RMID );
 109     output_cmd( IPC_RMID );
 110     output_cmd( IPC_RMID );
 111     output_cmd( IPC_RMID );
 112     output_cmd( IPC_RMID );
 113     output_cmd( IPC_RMID );
 114     output_cmd( IPC_RMID );
 115     output_cmd( IPC_RMID );
 116
 117     /* Some value we don't recognize */
 118     gemu_log("%d",cmd);
 119 }
 120
 121 static void
 122 print_signal(abi_ulong arg, int last)
 123 {
 124     const char *signal_name = NULL;
 125     switch(arg) {
 126     case TARGET_SIGHUP: signal_name = "SIGHUP"; break;
 127     case TARGET_SIGINT: signal_name = "SIGINT"; break;
 128     case TARGET_SIGQUIT: signal_name = "SIGQUIT"; break;
 129     case TARGET_SIGILL: signal_name = "SIGILL"; break;
 130     case TARGET_SIGABRT: signal_name = "SIGABRT"; break;
 131     case TARGET_SIGFPE: signal_name = "SIGFPE"; break;
 132     case TARGET_SIGKILL: signal_name = "SIGKILL"; break;
 133     case TARGET_SIGSEGV: signal_name = "SIGSEGV"; break;
 134     case TARGET_SIGPIPE: signal_name = "SIGPIPE"; break;
 135     case TARGET_SIGALRM: signal_name = "SIGALRM"; break;
 136     case TARGET_SIGTERM: signal_name = "SIGTERM"; break;
 137     case TARGET_SIGUSR1: signal_name = "SIGUSR1"; break;
 138     case TARGET_SIGUSR2: signal_name = "SIGUSR2"; break;
 139     case TARGET_SIGCHLD: signal_name = "SIGCHLD"; break;
 140     case TARGET_SIGCONT: signal_name = "SIGCONT"; break;
 141     case TARGET_SIGSTOP: signal_name = "SIGSTOP"; break;
 142     case TARGET_SIGTTIN: signal_name = "SIGTTIN"; break;
 143     case TARGET_SIGTTOU: signal_name = "SIGTTOU"; break;
 144     }
 145     if (signal_name == NULL) {
 146         print_raw_param("%ld", arg, 1);
 147         return;
 148     }
 149     gemu_log("%s%s", signal_name, get_comma(last));
 150 }
 151
 152 #ifdef TARGET_NR__newselect
 153 static void
 154 print_fdset(int n, abi_ulong target_fds_addr)
 155 {
 156     int i;
 157
 158     gemu_log("[");
 159     if( target_fds_addr ) {
 160         abi_long *target_fds;
 161
 162         target_fds = lock_user(VERIFY_READ,
 163                                target_fds_addr,
 164                                sizeof(*target_fds)*(n / TARGET_ABI_BITS + 1),
 165                                1);
 166
 167         if (!target_fds)
 168             return;
 169
 170         for (i=n; i>=0; i--) {
 171             if ((tswapal(target_fds[i / TARGET_ABI_BITS]) >> (i & (TARGET_ABI_BITS - 1))) & 1)
 172                 gemu_log("%d,", i );
 173             }
 174         unlock_user(target_fds, target_fds_addr, 0);
 175     }
 176     gemu_log("]");
 177 }
 178 #endif
 179
 180 /*
 181  * Sysycall specific output functions
 182  */
 183
 184 /* select */
 185 #ifdef TARGET_NR__newselect
 186 static long newselect_arg1 = 0;
 187 static long newselect_arg2 = 0;
 188 static long newselect_arg3 = 0;
 189 static long newselect_arg4 = 0;
 190 static long newselect_arg5 = 0;
 191
 192 static void
 193 print_newselect(const struct syscallname *name,
 194                 abi_long arg1, abi_long arg2, abi_long arg3,
 195                 abi_long arg4, abi_long arg5, abi_long arg6)
 196 {
 197     gemu_log("%s(" TARGET_ABI_FMT_ld ",", name->name, arg1);
 198     print_fdset(arg1, arg2);
 199     gemu_log(",");
 200     print_fdset(arg1, arg3);
 201     gemu_log(",");
 202     print_fdset(arg1, arg4);
 203     gemu_log(",");
 204     print_timeval(arg5, 1);
 205     gemu_log(")");
 206
 207     /* save for use in the return output function below */
 208     newselect_arg1=arg1;
 209     newselect_arg2=arg2;
 210     newselect_arg3=arg3;
 211     newselect_arg4=arg4;
 212     newselect_arg5=arg5;
 213 }
 214 #endif
 215
 216 #ifdef TARGET_NR_semctl
 217 static void
 218 print_semctl(const struct syscallname *name,
 219              abi_long arg1, abi_long arg2, abi_long arg3,
 220              abi_long arg4, abi_long arg5, abi_long arg6)
 221 {
 222     gemu_log("%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ",", name->name, arg1, arg2);
 223     print_ipc_cmd(arg3);
 224     gemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4);
 225 }
 226 #endif
 227
 228 static void
 229 print_execve(const struct syscallname *name,
 230              abi_long arg1, abi_long arg2, abi_long arg3,
 231              abi_long arg4, abi_long arg5, abi_long arg6)
 232 {
 233     abi_ulong arg_ptr_addr;
 234     char *s;
 235
 236     if (!(s = lock_user_string(arg1)))
 237         return;
 238     gemu_log("%s(\"%s\",{", name->name, s);
 239     unlock_user(s, arg1, 0);
 240
 241     for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) {
 242         abi_ulong *arg_ptr, arg_addr;
 243
 244         arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1);
 245         if (!arg_ptr)
 246             return;
 247     arg_addr = tswapal(*arg_ptr);
 248         unlock_user(arg_ptr, arg_ptr_addr, 0);
 249         if (!arg_addr)
 250             break;
 251         if ((s = lock_user_string(arg_addr))) {
 252             gemu_log("\"%s\",", s);
 253             unlock_user(s, arg_addr, 0);
 254         }
 255     }
 256
 257     gemu_log("NULL})");
 258 }
 259
 260 #ifdef TARGET_NR_ipc
 261 static void
 262 print_ipc(const struct syscallname *name,
 263           abi_long arg1, abi_long arg2, abi_long arg3,
 264           abi_long arg4, abi_long arg5, abi_long arg6)
 265 {
 266     switch(arg1) {
 267     case IPCOP_semctl:
 268         gemu_log("semctl(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ",", arg1, arg2);
 269         print_ipc_cmd(arg3);
 270         gemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4);
 271         break;
 272     default:
 273         gemu_log("%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")",
 274                  name->name, arg1, arg2, arg3, arg4);
 275     }
 276 }
 277 #endif
 278
 279 /*
 280  * Variants for the return value output function
 281  */
 282
 283 static void
 284 print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
 285 {
 286     char *errstr = NULL;
 287
 288     if (ret < 0) {
 289         errstr = target_strerror(-ret);
 290     }
 291     if (errstr) {
 292         gemu_log(" = -1 errno=%d (%s)\n", (int)-ret, errstr);
 293     } else {
 294         gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
 295     }
 296 }
 297
 298 #if 0 /* currently unused */
 299 static void
 300 print_syscall_ret_raw(struct syscallname *name, abi_long ret)
 301 {
 302         gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
 303 }
 304 #endif
 305
 306 #ifdef TARGET_NR__newselect
 307 static void
 308 print_syscall_ret_newselect(const struct syscallname *name, abi_long ret)
 309 {
 310     gemu_log(" = 0x" TARGET_ABI_FMT_lx " (", ret);
 311     print_fdset(newselect_arg1,newselect_arg2);
 312     gemu_log(",");
 313     print_fdset(newselect_arg1,newselect_arg3);
 314     gemu_log(",");
 315     print_fdset(newselect_arg1,newselect_arg4);
 316     gemu_log(",");
 317     print_timeval(newselect_arg5, 1);
 318     gemu_log(")\n");
 319 }
 320 #endif
 321
 322 UNUSED static struct flags access_flags[] = {
 323     FLAG_GENERIC(F_OK),
 324     FLAG_GENERIC(R_OK),
 325     FLAG_GENERIC(W_OK),
 326     FLAG_GENERIC(X_OK),
 327     FLAG_END,
 328 };
 329
 330 UNUSED static struct flags at_file_flags[] = {
 331 #ifdef AT_EACCESS
 332     FLAG_GENERIC(AT_EACCESS),
 333 #endif
 334 #ifdef AT_SYMLINK_NOFOLLOW
 335     FLAG_GENERIC(AT_SYMLINK_NOFOLLOW),
 336 #endif
 337     FLAG_END,
 338 };
 339
 340 UNUSED static struct flags unlinkat_flags[] = {
 341 #ifdef AT_REMOVEDIR
 342     FLAG_GENERIC(AT_REMOVEDIR),
 343 #endif
 344     FLAG_END,
 345 };
 346
 347 UNUSED static struct flags mode_flags[] = {
 348     FLAG_GENERIC(S_IFSOCK),
 349     FLAG_GENERIC(S_IFLNK),
 350     FLAG_GENERIC(S_IFREG),
 351     FLAG_GENERIC(S_IFBLK),
 352     FLAG_GENERIC(S_IFDIR),
 353     FLAG_GENERIC(S_IFCHR),
 354     FLAG_GENERIC(S_IFIFO),
 355     FLAG_END,
 356 };
 357
 358 UNUSED static struct flags open_access_flags[] = {
 359     FLAG_TARGET(O_RDONLY),
 360     FLAG_TARGET(O_WRONLY),
 361     FLAG_TARGET(O_RDWR),
 362     FLAG_END,
 363 };
 364
 365 UNUSED static struct flags open_flags[] = {
 366     FLAG_TARGET(O_APPEND),
 367     FLAG_TARGET(O_CREAT),
 368     FLAG_TARGET(O_DIRECTORY),
 369     FLAG_TARGET(O_EXCL),
 370     FLAG_TARGET(O_LARGEFILE),
 371     FLAG_TARGET(O_NOCTTY),
 372     FLAG_TARGET(O_NOFOLLOW),
 373     FLAG_TARGET(O_NONBLOCK),      /* also O_NDELAY */
 374     FLAG_TARGET(O_DSYNC),
 375     FLAG_TARGET(__O_SYNC),
 376     FLAG_TARGET(O_TRUNC),
 377 #ifdef O_DIRECT
 378     FLAG_TARGET(O_DIRECT),
 379 #endif
 380 #ifdef O_NOATIME
 381     FLAG_TARGET(O_NOATIME),
 382 #endif
 383 #ifdef O_CLOEXEC
 384     FLAG_TARGET(O_CLOEXEC),
 385 #endif
 386 #ifdef O_PATH
 387     FLAG_TARGET(O_PATH),
 388 #endif
 389     FLAG_END,
 390 };
 391
 392 UNUSED static struct flags mount_flags[] = {
 393 #ifdef MS_BIND
 394     FLAG_GENERIC(MS_BIND),
 395 #endif
 396 #ifdef MS_DIRSYNC
 397     FLAG_GENERIC(MS_DIRSYNC),
 398 #endif
 399     FLAG_GENERIC(MS_MANDLOCK),
 400 #ifdef MS_MOVE
 401     FLAG_GENERIC(MS_MOVE),
 402 #endif
 403     FLAG_GENERIC(MS_NOATIME),
 404     FLAG_GENERIC(MS_NODEV),
 405     FLAG_GENERIC(MS_NODIRATIME),
 406     FLAG_GENERIC(MS_NOEXEC),
 407     FLAG_GENERIC(MS_NOSUID),
 408     FLAG_GENERIC(MS_RDONLY),
 409 #ifdef MS_RELATIME
 410     FLAG_GENERIC(MS_RELATIME),
 411 #endif
 412     FLAG_GENERIC(MS_REMOUNT),
 413     FLAG_GENERIC(MS_SYNCHRONOUS),
 414     FLAG_END,
 415 };
 416
 417 UNUSED static struct flags umount2_flags[] = {
 418 #ifdef MNT_FORCE
 419     FLAG_GENERIC(MNT_FORCE),
 420 #endif
 421 #ifdef MNT_DETACH
 422     FLAG_GENERIC(MNT_DETACH),
 423 #endif
 424 #ifdef MNT_EXPIRE
 425     FLAG_GENERIC(MNT_EXPIRE),
 426 #endif
 427     FLAG_END,
 428 };
 429
 430 UNUSED static struct flags mmap_prot_flags[] = {
 431     FLAG_GENERIC(PROT_NONE),
 432     FLAG_GENERIC(PROT_EXEC),
 433     FLAG_GENERIC(PROT_READ),
 434     FLAG_GENERIC(PROT_WRITE),
 435     FLAG_TARGET(PROT_SEM),
 436     FLAG_GENERIC(PROT_GROWSDOWN),
 437     FLAG_GENERIC(PROT_GROWSUP),
 438     FLAG_END,
 439 };
 440
 441 UNUSED static struct flags mmap_flags[] = {
 442     FLAG_TARGET(MAP_SHARED),
 443     FLAG_TARGET(MAP_PRIVATE),
 444     FLAG_TARGET(MAP_ANONYMOUS),
 445     FLAG_TARGET(MAP_DENYWRITE),
 446     FLAG_TARGET(MAP_FIXED),
 447     FLAG_TARGET(MAP_GROWSDOWN),
 448     FLAG_TARGET(MAP_EXECUTABLE),
 449 #ifdef MAP_LOCKED
 450     FLAG_TARGET(MAP_LOCKED),
 451 #endif
 452 #ifdef MAP_NONBLOCK
 453     FLAG_TARGET(MAP_NONBLOCK),
 454 #endif
 455     FLAG_TARGET(MAP_NORESERVE),
 456 #ifdef MAP_POPULATE
 457     FLAG_TARGET(MAP_POPULATE),
 458 #endif
 459 #ifdef TARGET_MAP_UNINITIALIZED
 460     FLAG_TARGET(MAP_UNINITIALIZED),
 461 #endif
 462     FLAG_END,
 463 };
 464
 465 UNUSED static struct flags fcntl_flags[] = {
 466     FLAG_TARGET(F_DUPFD),
 467     FLAG_TARGET(F_GETFD),
 468     FLAG_TARGET(F_SETFD),
 469     FLAG_TARGET(F_GETFL),
 470     FLAG_TARGET(F_SETFL),
 471     FLAG_TARGET(F_GETLK),
 472     FLAG_TARGET(F_SETLK),
 473     FLAG_TARGET(F_SETLKW),
 474     FLAG_END,
 475 };
 476
 477 UNUSED static struct flags clone_flags[] = {
 478     FLAG_GENERIC(CLONE_VM),
 479     FLAG_GENERIC(CLONE_FS),
 480     FLAG_GENERIC(CLONE_FILES),
 481     FLAG_GENERIC(CLONE_SIGHAND),
 482     FLAG_GENERIC(CLONE_PTRACE),
 483     FLAG_GENERIC(CLONE_VFORK),
 484     FLAG_GENERIC(CLONE_PARENT),
 485     FLAG_GENERIC(CLONE_THREAD),
 486     FLAG_GENERIC(CLONE_NEWNS),
 487     FLAG_GENERIC(CLONE_SYSVSEM),
 488     FLAG_GENERIC(CLONE_SETTLS),
 489     FLAG_GENERIC(CLONE_PARENT_SETTID),
 490     FLAG_GENERIC(CLONE_CHILD_CLEARTID),
 491     FLAG_GENERIC(CLONE_DETACHED),
 492     FLAG_GENERIC(CLONE_UNTRACED),
 493     FLAG_GENERIC(CLONE_CHILD_SETTID),
 494 #if defined(CLONE_NEWUTS)
 495     FLAG_GENERIC(CLONE_NEWUTS),
 496 #endif
 497 #if defined(CLONE_NEWIPC)
 498     FLAG_GENERIC(CLONE_NEWIPC),
 499 #endif
 500 #if defined(CLONE_NEWUSER)
 501     FLAG_GENERIC(CLONE_NEWUSER),
 502 #endif
 503 #if defined(CLONE_NEWPID)
 504     FLAG_GENERIC(CLONE_NEWPID),
 505 #endif
 506 #if defined(CLONE_NEWNET)
 507     FLAG_GENERIC(CLONE_NEWNET),
 508 #endif
 509 #if defined(CLONE_IO)
 510     FLAG_GENERIC(CLONE_IO),
 511 #endif
 512     FLAG_END,
 513 };
 514
 515 /*
 516  * print_xxx utility functions.  These are used to print syscall
 517  * parameters in certain format.  All of these have parameter
 518  * named 'last'.  This parameter is used to add comma to output
 519  * when last == 0.
 520  */
 521
 522 static const char *
 523 get_comma(int last)
 524 {
 525     return ((last) ? "" : ",");
 526 }
 527
 528 static void
 529 print_flags(const struct flags *f, abi_long flags, int last)
 530 {
 531     const char *sep = "";
 532     int n;
 533
 534     if ((flags == 0) && (f->f_value == 0)) {
 535         gemu_log("%s%s", f->f_string, get_comma(last));
 536         return;
 537     }
 538     for (n = 0; f->f_string != NULL; f++) {
 539         if ((f->f_value != 0) && ((flags & f->f_value) == f->f_value)) {
 540             gemu_log("%s%s", sep, f->f_string);
 541             flags &= ~f->f_value;
 542             sep = "|";
 543             n++;
 544         }
 545     }
 546
 547     if (n > 0) {
 548         /* print rest of the flags as numeric */
 549         if (flags != 0) {
 550             gemu_log("%s%#x%s", sep, (unsigned int)flags, get_comma(last));
 551         } else {
 552             gemu_log("%s", get_comma(last));
 553         }
 554     } else {
 555         /* no string version of flags found, print them in hex then */
 556         gemu_log("%#x%s", (unsigned int)flags, get_comma(last));
 557     }
 558 }
 559
 560 static void
 561 print_at_dirfd(abi_long dirfd, int last)
 562 {
 563 #ifdef AT_FDCWD
 564     if (dirfd == AT_FDCWD) {
 565         gemu_log("AT_FDCWD%s", get_comma(last));
 566         return;
 567     }
 568 #endif
 569     gemu_log("%d%s", (int)dirfd, get_comma(last));
 570 }
 571
 572 static void
 573 print_file_mode(abi_long mode, int last)
 574 {
 575     const char *sep = "";
 576     const struct flags *m;
 577
 578     for (m = &mode_flags[0]; m->f_string != NULL; m++) {
 579         if ((m->f_value & mode) == m->f_value) {
 580             gemu_log("%s%s", m->f_string, sep);
 581             sep = "|";
 582             mode &= ~m->f_value;
 583             break;
 584         }
 585     }
 586
 587     mode &= ~S_IFMT;
 588     /* print rest of the mode as octal */
 589     if (mode != 0)
 590         gemu_log("%s%#o", sep, (unsigned int)mode);
 591
 592     gemu_log("%s", get_comma(last));
 593 }
 594
 595 static void
 596 print_open_flags(abi_long flags, int last)
 597 {
 598     print_flags(open_access_flags, flags & TARGET_O_ACCMODE, 1);
 599     flags &= ~TARGET_O_ACCMODE;
 600     if (flags == 0) {
 601         gemu_log("%s", get_comma(last));
 602         return;
 603     }
 604     gemu_log("|");
 605     print_flags(open_flags, flags, last);
 606 }
 607
 608 static void
 609 print_syscall_prologue(const struct syscallname *sc)
 610 {
 611     gemu_log("%s(", sc->name);
 612 }
 613
 614 /*ARGSUSED*/
 615 static void
 616 print_syscall_epilogue(const struct syscallname *sc)
 617 {
 618     (void)sc;
 619     gemu_log(")");
 620 }
 621
 622 static void
 623 print_string(abi_long addr, int last)
 624 {
 625     char *s;
 626
 627     if ((s = lock_user_string(addr)) != NULL) {
 628         gemu_log("\"%s\"%s", s, get_comma(last));
 629         unlock_user(s, addr, 0);
 630     } else {
 631         /* can't get string out of it, so print it as pointer */
 632         print_pointer(addr, last);
 633     }
 634 }
 635
 636 /*
 637  * Prints out raw parameter using given format.  Caller needs
 638  * to do byte swapping if needed.
 639  */
 640 static void
 641 print_raw_param(const char *fmt, abi_long param, int last)
 642 {
 643     char format[64];
 644
 645     (void) snprintf(format, sizeof (format), "%s%s", fmt, get_comma(last));
 646     gemu_log(format, param);
 647 }
 648
 649 static void
 650 print_pointer(abi_long p, int last)
 651 {
 652     if (p == 0)
 653         gemu_log("NULL%s", get_comma(last));
 654     else
 655         gemu_log("0x" TARGET_ABI_FMT_lx "%s", p, get_comma(last));
 656 }
 657
 658 /*
 659  * Reads 32-bit (int) number from guest address space from
 660  * address 'addr' and prints it.
 661  */
 662 static void
 663 print_number(abi_long addr, int last)
 664 {
 665     if (addr == 0) {
 666         gemu_log("NULL%s", get_comma(last));
 667     } else {
 668         int num;
 669
 670         get_user_s32(num, addr);
 671         gemu_log("[%d]%s", num, get_comma(last));
 672     }
 673 }
 674
 675 static void
 676 print_timeval(abi_ulong tv_addr, int last)
 677 {
 678     if( tv_addr ) {
 679         struct target_timeval *tv;
 680
 681         tv = lock_user(VERIFY_READ, tv_addr, sizeof(*tv), 1);
 682         if (!tv)
 683             return;
 684         gemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}%s",
 685             tswapal(tv->tv_sec), tswapal(tv->tv_usec), get_comma(last));
 686         unlock_user(tv, tv_addr, 0);
 687     } else
 688         gemu_log("NULL%s", get_comma(last));
 689 }
 690
 691 #undef UNUSED
 692
 693 #ifdef TARGET_NR_accept
 694 static void
 695 print_accept(const struct syscallname *name,
 696     abi_long arg0, abi_long arg1, abi_long arg2,
 697     abi_long arg3, abi_long arg4, abi_long arg5)
 698 {
 699     print_syscall_prologue(name);
 700     print_raw_param("%d", arg0, 0);
 701     print_pointer(arg1, 0);
 702     print_number(arg2, 1);
 703     print_syscall_epilogue(name);
 704 }
 705 #endif
 706
 707 #ifdef TARGET_NR_access
 708 static void
 709 print_access(const struct syscallname *name,
 710     abi_long arg0, abi_long arg1, abi_long arg2,
 711     abi_long arg3, abi_long arg4, abi_long arg5)
 712 {
 713     print_syscall_prologue(name);
 714     print_string(arg0, 0);
 715     print_flags(access_flags, arg1, 1);
 716     print_syscall_epilogue(name);
 717 }
 718 #endif
 719
 720 #ifdef TARGET_NR_brk
 721 static void
 722 print_brk(const struct syscallname *name,
 723     abi_long arg0, abi_long arg1, abi_long arg2,
 724     abi_long arg3, abi_long arg4, abi_long arg5)
 725 {
 726     print_syscall_prologue(name);
 727     print_pointer(arg0, 1);
 728     print_syscall_epilogue(name);
 729 }
 730 #endif
 731
 732 #ifdef TARGET_NR_chdir
 733 static void
 734 print_chdir(const struct syscallname *name,
 735     abi_long arg0, abi_long arg1, abi_long arg2,
 736     abi_long arg3, abi_long arg4, abi_long arg5)
 737 {
 738     print_syscall_prologue(name);
 739     print_string(arg0, 1);
 740     print_syscall_epilogue(name);
 741 }
 742 #endif
 743
 744 #ifdef TARGET_NR_chmod
 745 static void
 746 print_chmod(const struct syscallname *name,
 747     abi_long arg0, abi_long arg1, abi_long arg2,
 748     abi_long arg3, abi_long arg4, abi_long arg5)
 749 {
 750     print_syscall_prologue(name);
 751     print_string(arg0, 0);
 752     print_file_mode(arg1, 1);
 753     print_syscall_epilogue(name);
 754 }
 755 #endif
 756
 757 #ifdef TARGET_NR_clone
 758 static void
 759 print_clone(const struct syscallname *name,
 760     abi_long arg0, abi_long arg1, abi_long arg2,
 761     abi_long arg3, abi_long arg4, abi_long arg5)
 762 {
 763     print_syscall_prologue(name);
 764 #if defined(TARGET_M68K)
 765     print_flags(clone_flags, arg0, 0);
 766     print_raw_param("newsp=0x" TARGET_ABI_FMT_lx, arg1, 1);
 767 #elif defined(TARGET_SH4) || defined(TARGET_ALPHA)
 768     print_flags(clone_flags, arg0, 0);
 769     print_raw_param("child_stack=0x" TARGET_ABI_FMT_lx, arg1, 0);
 770     print_raw_param("parent_tidptr=0x" TARGET_ABI_FMT_lx, arg2, 0);
 771     print_raw_param("child_tidptr=0x" TARGET_ABI_FMT_lx, arg3, 0);
 772     print_raw_param("tls=0x" TARGET_ABI_FMT_lx, arg4, 1);
 773 #elif defined(TARGET_CRIS)
 774     print_raw_param("child_stack=0x" TARGET_ABI_FMT_lx, arg0, 0);
 775     print_flags(clone_flags, arg1, 0);
 776     print_raw_param("parent_tidptr=0x" TARGET_ABI_FMT_lx, arg2, 0);
 777     print_raw_param("tls=0x" TARGET_ABI_FMT_lx, arg3, 0);
 778     print_raw_param("child_tidptr=0x" TARGET_ABI_FMT_lx, arg4, 1);
 779 #else
 780     print_flags(clone_flags, arg0, 0);
 781     print_raw_param("child_stack=0x" TARGET_ABI_FMT_lx, arg1, 0);
 782     print_raw_param("parent_tidptr=0x" TARGET_ABI_FMT_lx, arg2, 0);
 783     print_raw_param("tls=0x" TARGET_ABI_FMT_lx, arg3, 0);
 784     print_raw_param("child_tidptr=0x" TARGET_ABI_FMT_lx, arg4, 1);
 785 #endif
 786     print_syscall_epilogue(name);
 787 }
 788 #endif
 789
 790 #ifdef TARGET_NR_creat
 791 static void
 792 print_creat(const struct syscallname *name,
 793     abi_long arg0, abi_long arg1, abi_long arg2,
 794     abi_long arg3, abi_long arg4, abi_long arg5)
 795 {
 796     print_syscall_prologue(name);
 797     print_string(arg0, 0);
 798     print_file_mode(arg1, 1);
 799     print_syscall_epilogue(name);
 800 }
 801 #endif
 802
 803 #ifdef TARGET_NR_execv
 804 static void
 805 print_execv(const struct syscallname *name,
 806     abi_long arg0, abi_long arg1, abi_long arg2,
 807     abi_long arg3, abi_long arg4, abi_long arg5)
 808 {
 809     print_syscall_prologue(name);
 810     print_string(arg0, 0);
 811     print_raw_param("0x" TARGET_ABI_FMT_lx, arg1, 1);
 812     print_syscall_epilogue(name);
 813 }
 814 #endif
 815
 816 #ifdef TARGET_NR_faccessat
 817 static void
 818 print_faccessat(const struct syscallname *name,
 819     abi_long arg0, abi_long arg1, abi_long arg2,
 820     abi_long arg3, abi_long arg4, abi_long arg5)
 821 {
 822     print_syscall_prologue(name);
 823     print_at_dirfd(arg0, 0);
 824     print_string(arg1, 0);
 825     print_flags(access_flags, arg2, 0);
 826     print_flags(at_file_flags, arg3, 1);
 827     print_syscall_epilogue(name);
 828 }
 829 #endif
 830
 831 #ifdef TARGET_NR_fchmodat
 832 static void
 833 print_fchmodat(const struct syscallname *name,
 834     abi_long arg0, abi_long arg1, abi_long arg2,
 835     abi_long arg3, abi_long arg4, abi_long arg5)
 836 {
 837     print_syscall_prologue(name);
 838     print_at_dirfd(arg0, 0);
 839     print_string(arg1, 0);
 840     print_file_mode(arg2, 0);
 841     print_flags(at_file_flags, arg3, 1);
 842     print_syscall_epilogue(name);
 843 }
 844 #endif
 845
 846 #ifdef TARGET_NR_fchownat
 847 static void
 848 print_fchownat(const struct syscallname *name,
 849     abi_long arg0, abi_long arg1, abi_long arg2,
 850     abi_long arg3, abi_long arg4, abi_long arg5)
 851 {
 852     print_syscall_prologue(name);
 853     print_at_dirfd(arg0, 0);
 854     print_string(arg1, 0);
 855     print_raw_param("%d", arg2, 0);
 856     print_raw_param("%d", arg3, 0);
 857     print_flags(at_file_flags, arg4, 1);
 858     print_syscall_epilogue(name);
 859 }
 860 #endif
 861
 862 #if defined(TARGET_NR_fcntl) || defined(TARGET_NR_fcntl64)
 863 static void
 864 print_fcntl(const struct syscallname *name,
 865     abi_long arg0, abi_long arg1, abi_long arg2,
 866     abi_long arg3, abi_long arg4, abi_long arg5)
 867 {
 868     print_syscall_prologue(name);
 869     print_raw_param("%d", arg0, 0);
 870     print_flags(fcntl_flags, arg1, 0);
 871     /*
 872      * TODO: check flags and print following argument only
 873      *       when needed.
 874      */
 875     print_pointer(arg2, 1);
 876     print_syscall_epilogue(name);
 877 }
 878 #define print_fcntl64   print_fcntl
 879 #endif
 880
 881
 882 #ifdef TARGET_NR_futimesat
 883 static void
 884 print_futimesat(const struct syscallname *name,
 885     abi_long arg0, abi_long arg1, abi_long arg2,
 886     abi_long arg3, abi_long arg4, abi_long arg5)
 887 {
 888     print_syscall_prologue(name);
 889     print_at_dirfd(arg0, 0);
 890     print_string(arg1, 0);
 891     print_timeval(arg2, 0);
 892     print_timeval(arg2 + sizeof (struct target_timeval), 1);
 893     print_syscall_epilogue(name);
 894 }
 895 #endif
 896
 897 #ifdef TARGET_NR_link
 898 static void
 899 print_link(const struct syscallname *name,
 900     abi_long arg0, abi_long arg1, abi_long arg2,
 901     abi_long arg3, abi_long arg4, abi_long arg5)
 902 {
 903     print_syscall_prologue(name);
 904     print_string(arg0, 0);
 905     print_string(arg1, 1);
 906     print_syscall_epilogue(name);
 907 }
 908 #endif
 909
 910 #ifdef TARGET_NR_linkat
 911 static void
 912 print_linkat(const struct syscallname *name,
 913     abi_long arg0, abi_long arg1, abi_long arg2,
 914     abi_long arg3, abi_long arg4, abi_long arg5)
 915 {
 916     print_syscall_prologue(name);
 917     print_at_dirfd(arg0, 0);
 918     print_string(arg1, 0);
 919     print_at_dirfd(arg2, 0);
 920     print_string(arg3, 0);
 921     print_flags(at_file_flags, arg4, 1);
 922     print_syscall_epilogue(name);
 923 }
 924 #endif
 925
 926 #ifdef TARGET_NR__llseek
 927 static void
 928 print__llseek(const struct syscallname *name,
 929     abi_long arg0, abi_long arg1, abi_long arg2,
 930     abi_long arg3, abi_long arg4, abi_long arg5)
 931 {
 932     const char *whence = "UNKNOWN";
 933     print_syscall_prologue(name);
 934     print_raw_param("%d", arg0, 0);
 935     print_raw_param("%ld", arg1, 0);
 936     print_raw_param("%ld", arg2, 0);
 937     print_pointer(arg3, 0);
 938     switch(arg4) {
 939     case SEEK_SET: whence = "SEEK_SET"; break;
 940     case SEEK_CUR: whence = "SEEK_CUR"; break;
 941     case SEEK_END: whence = "SEEK_END"; break;
 942     }
 943     gemu_log("%s",whence);
 944     print_syscall_epilogue(name);
 945 }
 946 #endif
 947
 948 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) || \
 949     defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64)
 950 static void
 951 print_stat(const struct syscallname *name,
 952     abi_long arg0, abi_long arg1, abi_long arg2,
 953     abi_long arg3, abi_long arg4, abi_long arg5)
 954 {
 955     print_syscall_prologue(name);
 956     print_string(arg0, 0);
 957     print_pointer(arg1, 1);
 958     print_syscall_epilogue(name);
 959 }
 960 #define print_lstat     print_stat
 961 #define print_stat64    print_stat
 962 #define print_lstat64   print_stat
 963 #endif
 964
 965 #if defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64)
 966 static void
 967 print_fstat(const struct syscallname *name,
 968     abi_long arg0, abi_long arg1, abi_long arg2,
 969     abi_long arg3, abi_long arg4, abi_long arg5)
 970 {
 971     print_syscall_prologue(name);
 972     print_raw_param("%d", arg0, 0);
 973     print_pointer(arg1, 1);
 974     print_syscall_epilogue(name);
 975 }
 976 #define print_fstat64     print_fstat
 977 #endif
 978
 979 #ifdef TARGET_NR_mkdir
 980 static void
 981 print_mkdir(const struct syscallname *name,
 982     abi_long arg0, abi_long arg1, abi_long arg2,
 983     abi_long arg3, abi_long arg4, abi_long arg5)
 984 {
 985     print_syscall_prologue(name);
 986     print_string(arg0, 0);
 987     print_file_mode(arg1, 1);
 988     print_syscall_epilogue(name);
 989 }
 990 #endif
 991
 992 #ifdef TARGET_NR_mkdirat
 993 static void
 994 print_mkdirat(const struct syscallname *name,
 995     abi_long arg0, abi_long arg1, abi_long arg2,
 996     abi_long arg3, abi_long arg4, abi_long arg5)
 997 {
 998     print_syscall_prologue(name);
 999     print_at_dirfd(arg0, 0);
1000     print_string(arg1, 0);
1001     print_file_mode(arg2, 1);
1002     print_syscall_epilogue(name);
1003 }
1004 #endif
1005
1006 #ifdef TARGET_NR_rmdir
1007 static void
1008 print_rmdir(const struct syscallname *name,
1009     abi_long arg0, abi_long arg1, abi_long arg2,
1010     abi_long arg3, abi_long arg4, abi_long arg5)
1011 {
1012     print_syscall_prologue(name);
1013     print_string(arg0, 0);
1014     print_syscall_epilogue(name);
1015 }
1016 #endif
1017
1018 #ifdef TARGET_NR_rt_sigaction
1019 static void
1020 print_rt_sigaction(const struct syscallname *name,
1021     abi_long arg0, abi_long arg1, abi_long arg2,
1022     abi_long arg3, abi_long arg4, abi_long arg5)
1023 {
1024     print_syscall_prologue(name);
1025     print_signal(arg0, 0);
1026     print_pointer(arg1, 0);
1027     print_pointer(arg2, 1);
1028     print_syscall_epilogue(name);
1029 }
1030 #endif
1031
1032 #ifdef TARGET_NR_rt_sigprocmask
1033 static void
1034 print_rt_sigprocmask(const struct syscallname *name,
1035     abi_long arg0, abi_long arg1, abi_long arg2,
1036     abi_long arg3, abi_long arg4, abi_long arg5)
1037 {
1038     const char *how = "UNKNOWN";
1039     print_syscall_prologue(name);
1040     switch(arg0) {
1041     case TARGET_SIG_BLOCK: how = "SIG_BLOCK"; break;
1042     case TARGET_SIG_UNBLOCK: how = "SIG_UNBLOCK"; break;
1043     case TARGET_SIG_SETMASK: how = "SIG_SETMASK"; break;
1044     }
1045     gemu_log("%s,",how);
1046     print_pointer(arg1, 0);
1047     print_pointer(arg2, 1);
1048     print_syscall_epilogue(name);
1049 }
1050 #endif
1051
1052 #ifdef TARGET_NR_mknod
1053 static void
1054 print_mknod(const struct syscallname *name,
1055     abi_long arg0, abi_long arg1, abi_long arg2,
1056     abi_long arg3, abi_long arg4, abi_long arg5)
1057 {
1058     int hasdev = (arg1 & (S_IFCHR|S_IFBLK));
1059
1060     print_syscall_prologue(name);
1061     print_string(arg0, 0);
1062     print_file_mode(arg1, (hasdev == 0));
1063     if (hasdev) {
1064         print_raw_param("makedev(%d", major(arg2), 0);
1065         print_raw_param("%d)", minor(arg2), 1);
1066     }
1067     print_syscall_epilogue(name);
1068 }
1069 #endif
1070
1071 #ifdef TARGET_NR_mknodat
1072 static void
1073 print_mknodat(const struct syscallname *name,
1074     abi_long arg0, abi_long arg1, abi_long arg2,
1075     abi_long arg3, abi_long arg4, abi_long arg5)
1076 {
1077     int hasdev = (arg2 & (S_IFCHR|S_IFBLK));
1078
1079     print_syscall_prologue(name);
1080     print_at_dirfd(arg0, 0);
1081     print_string(arg1, 0);
1082     print_file_mode(arg2, (hasdev == 0));
1083     if (hasdev) {
1084         print_raw_param("makedev(%d", major(arg3), 0);
1085         print_raw_param("%d)", minor(arg3), 1);
1086     }
1087     print_syscall_epilogue(name);
1088 }
1089 #endif
1090
1091 #ifdef TARGET_NR_mq_open
1092 static void
1093 print_mq_open(const struct syscallname *name,
1094     abi_long arg0, abi_long arg1, abi_long arg2,
1095     abi_long arg3, abi_long arg4, abi_long arg5)
1096 {
1097     int is_creat = (arg1 & TARGET_O_CREAT);
1098
1099     print_syscall_prologue(name);
1100     print_string(arg0, 0);
1101     print_open_flags(arg1, (is_creat == 0));
1102     if (is_creat) {
1103         print_file_mode(arg2, 0);
1104         print_pointer(arg3, 1);
1105     }
1106     print_syscall_epilogue(name);
1107 }
1108 #endif
1109
1110 #ifdef TARGET_NR_open
1111 static void
1112 print_open(const struct syscallname *name,
1113     abi_long arg0, abi_long arg1, abi_long arg2,
1114     abi_long arg3, abi_long arg4, abi_long arg5)
1115 {
1116     int is_creat = (arg1 & TARGET_O_CREAT);
1117
1118     print_syscall_prologue(name);
1119     print_string(arg0, 0);
1120     print_open_flags(arg1, (is_creat == 0));
1121     if (is_creat)
1122         print_file_mode(arg2, 1);
1123     print_syscall_epilogue(name);
1124 }
1125 #endif
1126
1127 #ifdef TARGET_NR_openat
1128 static void
1129 print_openat(const struct syscallname *name,
1130     abi_long arg0, abi_long arg1, abi_long arg2,
1131     abi_long arg3, abi_long arg4, abi_long arg5)
1132 {
1133     int is_creat = (arg2 & TARGET_O_CREAT);
1134
1135     print_syscall_prologue(name);
1136     print_at_dirfd(arg0, 0);
1137     print_string(arg1, 0);
1138     print_open_flags(arg2, (is_creat == 0));
1139     if (is_creat)
1140         print_file_mode(arg3, 1);
1141     print_syscall_epilogue(name);
1142 }
1143 #endif
1144
1145 #ifdef TARGET_NR_mq_unlink
1146 static void
1147 print_mq_unlink(const struct syscallname *name,
1148     abi_long arg0, abi_long arg1, abi_long arg2,
1149     abi_long arg3, abi_long arg4, abi_long arg5)
1150 {
1151     print_syscall_prologue(name);
1152     print_string(arg0, 1);
1153     print_syscall_epilogue(name);
1154 }
1155 #endif
1156
1157 #if defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)
1158 static void
1159 print_fstatat64(const struct syscallname *name,
1160     abi_long arg0, abi_long arg1, abi_long arg2,
1161     abi_long arg3, abi_long arg4, abi_long arg5)
1162 {
1163     print_syscall_prologue(name);
1164     print_at_dirfd(arg0, 0);
1165     print_string(arg1, 0);
1166     print_pointer(arg2, 0);
1167     print_flags(at_file_flags, arg3, 1);
1168     print_syscall_epilogue(name);
1169 }
1170 #define print_newfstatat    print_fstatat64
1171 #endif
1172
1173 #ifdef TARGET_NR_readlink
1174 static void
1175 print_readlink(const struct syscallname *name,
1176     abi_long arg0, abi_long arg1, abi_long arg2,
1177     abi_long arg3, abi_long arg4, abi_long arg5)
1178 {
1179     print_syscall_prologue(name);
1180     print_string(arg0, 0);
1181     print_pointer(arg1, 0);
1182     print_raw_param("%u", arg2, 1);
1183     print_syscall_epilogue(name);
1184 }
1185 #endif
1186
1187 #ifdef TARGET_NR_readlinkat
1188 static void
1189 print_readlinkat(const struct syscallname *name,
1190     abi_long arg0, abi_long arg1, abi_long arg2,
1191     abi_long arg3, abi_long arg4, abi_long arg5)
1192 {
1193     print_syscall_prologue(name);
1194     print_at_dirfd(arg0, 0);
1195     print_string(arg1, 0);
1196     print_pointer(arg2, 0);
1197     print_raw_param("%u", arg3, 1);
1198     print_syscall_epilogue(name);
1199 }
1200 #endif
1201
1202 #ifdef TARGET_NR_rename
1203 static void
1204 print_rename(const struct syscallname *name,
1205     abi_long arg0, abi_long arg1, abi_long arg2,
1206     abi_long arg3, abi_long arg4, abi_long arg5)
1207 {
1208     print_syscall_prologue(name);
1209     print_string(arg0, 0);
1210     print_string(arg1, 1);
1211     print_syscall_epilogue(name);
1212 }
1213 #endif
1214
1215 #ifdef TARGET_NR_renameat
1216 static void
1217 print_renameat(const struct syscallname *name,
1218     abi_long arg0, abi_long arg1, abi_long arg2,
1219     abi_long arg3, abi_long arg4, abi_long arg5)
1220 {
1221     print_syscall_prologue(name);
1222     print_at_dirfd(arg0, 0);
1223     print_string(arg1, 0);
1224     print_at_dirfd(arg2, 0);
1225     print_string(arg3, 1);
1226     print_syscall_epilogue(name);
1227 }
1228 #endif
1229
1230 #ifdef TARGET_NR_statfs
1231 static void
1232 print_statfs(const struct syscallname *name,
1233     abi_long arg0, abi_long arg1, abi_long arg2,
1234     abi_long arg3, abi_long arg4, abi_long arg5)
1235 {
1236     print_syscall_prologue(name);
1237     print_string(arg0, 0);
1238     print_pointer(arg1, 1);
1239     print_syscall_epilogue(name);
1240 }
1241 #define print_statfs64  print_statfs
1242 #endif
1243
1244 #ifdef TARGET_NR_symlink
1245 static void
1246 print_symlink(const struct syscallname *name,
1247     abi_long arg0, abi_long arg1, abi_long arg2,
1248     abi_long arg3, abi_long arg4, abi_long arg5)
1249 {
1250     print_syscall_prologue(name);
1251     print_string(arg0, 0);
1252     print_string(arg1, 1);
1253     print_syscall_epilogue(name);
1254 }
1255 #endif
1256
1257 #ifdef TARGET_NR_symlinkat
1258 static void
1259 print_symlinkat(const struct syscallname *name,
1260     abi_long arg0, abi_long arg1, abi_long arg2,
1261     abi_long arg3, abi_long arg4, abi_long arg5)
1262 {
1263     print_syscall_prologue(name);
1264     print_string(arg0, 0);
1265     print_at_dirfd(arg1, 0);
1266     print_string(arg2, 1);
1267     print_syscall_epilogue(name);
1268 }
1269 #endif
1270
1271 #ifdef TARGET_NR_mount
1272 static void
1273 print_mount(const struct syscallname *name,
1274     abi_long arg0, abi_long arg1, abi_long arg2,
1275     abi_long arg3, abi_long arg4, abi_long arg5)
1276 {
1277     print_syscall_prologue(name);
1278     print_string(arg0, 0);
1279     print_string(arg1, 0);
1280     print_string(arg2, 0);
1281     print_flags(mount_flags, arg3, 0);
1282     print_pointer(arg4, 1);
1283     print_syscall_epilogue(name);
1284 }
1285 #endif
1286
1287 #ifdef TARGET_NR_umount
1288 static void
1289 print_umount(const struct syscallname *name,
1290     abi_long arg0, abi_long arg1, abi_long arg2,
1291     abi_long arg3, abi_long arg4, abi_long arg5)
1292 {
1293     print_syscall_prologue(name);
1294     print_string(arg0, 1);
1295     print_syscall_epilogue(name);
1296 }
1297 #endif
1298
1299 #ifdef TARGET_NR_umount2
1300 static void
1301 print_umount2(const struct syscallname *name,
1302     abi_long arg0, abi_long arg1, abi_long arg2,
1303     abi_long arg3, abi_long arg4, abi_long arg5)
1304 {
1305     print_syscall_prologue(name);
1306     print_string(arg0, 0);
1307     print_flags(umount2_flags, arg1, 1);
1308     print_syscall_epilogue(name);
1309 }
1310 #endif
1311
1312 #ifdef TARGET_NR_unlink
1313 static void
1314 print_unlink(const struct syscallname *name,
1315     abi_long arg0, abi_long arg1, abi_long arg2,
1316     abi_long arg3, abi_long arg4, abi_long arg5)
1317 {
1318     print_syscall_prologue(name);
1319     print_string(arg0, 1);
1320     print_syscall_epilogue(name);
1321 }
1322 #endif
1323
1324 #ifdef TARGET_NR_unlinkat
1325 static void
1326 print_unlinkat(const struct syscallname *name,
1327     abi_long arg0, abi_long arg1, abi_long arg2,
1328     abi_long arg3, abi_long arg4, abi_long arg5)
1329 {
1330     print_syscall_prologue(name);
1331     print_at_dirfd(arg0, 0);
1332     print_string(arg1, 0);
1333     print_flags(unlinkat_flags, arg2, 1);
1334     print_syscall_epilogue(name);
1335 }
1336 #endif
1337
1338 #ifdef TARGET_NR_utime
1339 static void
1340 print_utime(const struct syscallname *name,
1341     abi_long arg0, abi_long arg1, abi_long arg2,
1342     abi_long arg3, abi_long arg4, abi_long arg5)
1343 {
1344     print_syscall_prologue(name);
1345     print_string(arg0, 0);
1346     print_pointer(arg1, 1);
1347     print_syscall_epilogue(name);
1348 }
1349 #endif
1350
1351 #ifdef TARGET_NR_utimes
1352 static void
1353 print_utimes(const struct syscallname *name,
1354     abi_long arg0, abi_long arg1, abi_long arg2,
1355     abi_long arg3, abi_long arg4, abi_long arg5)
1356 {
1357     print_syscall_prologue(name);
1358     print_string(arg0, 0);
1359     print_pointer(arg1, 1);
1360     print_syscall_epilogue(name);
1361 }
1362 #endif
1363
1364 #ifdef TARGET_NR_utimensat
1365 static void
1366 print_utimensat(const struct syscallname *name,
1367     abi_long arg0, abi_long arg1, abi_long arg2,
1368     abi_long arg3, abi_long arg4, abi_long arg5)
1369 {
1370     print_syscall_prologue(name);
1371     print_at_dirfd(arg0, 0);
1372     print_string(arg1, 0);
1373     print_pointer(arg2, 0);
1374     print_flags(at_file_flags, arg3, 1);
1375     print_syscall_epilogue(name);
1376 }
1377 #endif
1378
1379 #if defined(TARGET_NR_mmap) || defined(TARGET_NR_mmap2)
1380 static void
1381 print_mmap(const struct syscallname *name,
1382     abi_long arg0, abi_long arg1, abi_long arg2,
1383     abi_long arg3, abi_long arg4, abi_long arg5)
1384 {
1385     print_syscall_prologue(name);
1386     print_pointer(arg0, 0);
1387     print_raw_param("%d", arg1, 0);
1388     print_flags(mmap_prot_flags, arg2, 0);
1389     print_flags(mmap_flags, arg3, 0);
1390     print_raw_param("%d", arg4, 0);
1391     print_raw_param("%#x", arg5, 1);
1392     print_syscall_epilogue(name);
1393 }
1394 #define print_mmap2     print_mmap
1395 #endif
1396
1397 #ifdef TARGET_NR_mprotect
1398 static void
1399 print_mprotect(const struct syscallname *name,
1400     abi_long arg0, abi_long arg1, abi_long arg2,
1401     abi_long arg3, abi_long arg4, abi_long arg5)
1402 {
1403     print_syscall_prologue(name);
1404     print_pointer(arg0, 0);
1405     print_raw_param("%d", arg1, 0);
1406     print_flags(mmap_prot_flags, arg2, 1);
1407     print_syscall_epilogue(name);
1408 }
1409 #endif
1410
1411 #ifdef TARGET_NR_munmap
1412 static void
1413 print_munmap(const struct syscallname *name,
1414     abi_long arg0, abi_long arg1, abi_long arg2,
1415     abi_long arg3, abi_long arg4, abi_long arg5)
1416 {
1417     print_syscall_prologue(name);
1418     print_pointer(arg0, 0);
1419     print_raw_param("%d", arg1, 1);
1420     print_syscall_epilogue(name);
1421 }
1422 #endif
1423
1424 #ifdef TARGET_NR_futex
1425 static void print_futex_op(abi_long tflag, int last)
1426 {
1427 #define print_op(val) \
1428 if( cmd == val ) { \
1429     gemu_log(#val); \
1430     return; \
1431 }
1432
1433     int cmd = (int)tflag;
1434 #ifdef FUTEX_PRIVATE_FLAG
1435     if (cmd & FUTEX_PRIVATE_FLAG) {
1436         gemu_log("FUTEX_PRIVATE_FLAG|");
1437         cmd &= ~FUTEX_PRIVATE_FLAG;
1438     }
1439 #endif
1440     print_op(FUTEX_WAIT)
1441     print_op(FUTEX_WAKE)
1442     print_op(FUTEX_FD)
1443     print_op(FUTEX_REQUEUE)
1444     print_op(FUTEX_CMP_REQUEUE)
1445     print_op(FUTEX_WAKE_OP)
1446     print_op(FUTEX_LOCK_PI)
1447     print_op(FUTEX_UNLOCK_PI)
1448     print_op(FUTEX_TRYLOCK_PI)
1449 #ifdef FUTEX_WAIT_BITSET
1450     print_op(FUTEX_WAIT_BITSET)
1451 #endif
1452 #ifdef FUTEX_WAKE_BITSET
1453     print_op(FUTEX_WAKE_BITSET)
1454 #endif
1455     /* unknown values */
1456     gemu_log("%d",cmd);
1457 }
1458
1459 static void
1460 print_futex(const struct syscallname *name,
1461     abi_long arg0, abi_long arg1, abi_long arg2,
1462     abi_long arg3, abi_long arg4, abi_long arg5)
1463 {
1464     print_syscall_prologue(name);
1465     print_pointer(arg0, 0);
1466     print_futex_op(arg1, 0);
1467     print_raw_param(",%d", arg2, 0);
1468     print_pointer(arg3, 0); /* struct timespec */
1469     print_pointer(arg4, 0);
1470     print_raw_param("%d", arg4, 1);
1471     print_syscall_epilogue(name);
1472 }
1473 #endif
1474
1475 #ifdef TARGET_NR_kill
1476 static void
1477 print_kill(const struct syscallname *name,
1478     abi_long arg0, abi_long arg1, abi_long arg2,
1479     abi_long arg3, abi_long arg4, abi_long arg5)
1480 {
1481     print_syscall_prologue(name);
1482     print_raw_param("%d", arg0, 0);
1483     print_signal(arg1, 1);
1484     print_syscall_epilogue(name);
1485 }
1486 #endif
1487
1488 /*
1489  * An array of all of the syscalls we know about
1490  */
1491
1492 static const struct syscallname scnames[] = {
1493 #include "strace.list"
1494 };
1495
1496 static int nsyscalls = ARRAY_SIZE(scnames);
1497
1498 /*
1499  * The public interface to this module.
1500  */
1501 void
1502 print_syscall(int num,
1503               abi_long arg1, abi_long arg2, abi_long arg3,
1504               abi_long arg4, abi_long arg5, abi_long arg6)
1505 {
1506     int i;
1507     const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")";
1508
1509     gemu_log("%d ", getpid() );
1510
1511     for(i=0;i<nsyscalls;i++)
1512         if( scnames[i].nr == num ) {
1513             if( scnames[i].call != NULL ) {
1514                 scnames[i].call(&scnames[i],arg1,arg2,arg3,arg4,arg5,arg6);
1515             } else {
1516                 /* XXX: this format system is broken because it uses
1517                    host types and host pointers for strings */
1518                 if( scnames[i].format != NULL )
1519                     format = scnames[i].format;
1520                 gemu_log(format,scnames[i].name, arg1,arg2,arg3,arg4,arg5,arg6);
1521             }
1522             return;
1523         }
1524     gemu_log("Unknown syscall %d\n", num);
1525 }
1526
1527
1528 void
1529 print_syscall_ret(int num, abi_long ret)
1530 {
1531     int i;
1532     char *errstr = NULL;
1533
1534     for(i=0;i<nsyscalls;i++)
1535         if( scnames[i].nr == num ) {
1536             if( scnames[i].result != NULL ) {
1537                 scnames[i].result(&scnames[i],ret);
1538             } else {
1539                 if (ret < 0) {
1540                     errstr = target_strerror(-ret);
1541                 }
1542                 if (errstr) {
1543                     gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n",
1544                              -ret, errstr);
1545                 } else {
1546                     gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret);
1547                 }
1548             }
1549             break;
1550         }
1551 }