mem.c - platform/external/strace - Gitiles

 /*
  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
  * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  *	$Id$
  */

 #include "defs.h"

 #ifdef LINUX
 #include <linux/mman.h>
 #endif
 #include <sys/mman.h>

 #if defined(LINUX) && defined(__i386__)
 #include <asm/ldt.h>
 #endif

 int
 sys_brk(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%#lx", tcp->u_arg[0]);
 	}
 #ifdef LINUX
 	return RVAL_HEX;
 #else
 	return 0;
 #endif
 }

 int
 sys_sbrk(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%lu", tcp->u_arg[0]);
 	}
 	return RVAL_HEX;
 }

 static struct xlat mmap_prot[] = {
 	{ PROT_NONE,	"PROT_NONE",	},
 	{ PROT_READ,	"PROT_READ"	},
 	{ PROT_WRITE,	"PROT_WRITE"	},
 	{ PROT_EXEC,	"PROT_EXEC"	},
 	{ 0,		NULL		},
 };

 static struct xlat mmap_flags[] = {
 	{ MAP_SHARED,	"MAP_SHARED"	},
 	{ MAP_PRIVATE,	"MAP_PRIVATE"	},
 	{ MAP_FIXED,	"MAP_FIXED"	},
 #ifdef MAP_ANONYMOUS
 	{ MAP_ANONYMOUS,"MAP_ANONYMOUS"	},
 #endif
 #ifdef MAP_RENAME
 	{ MAP_RENAME,	"MAP_RENAME"	},
 #endif
 #ifdef MAP_NORESERVE
 	{ MAP_NORESERVE,"MAP_NORESERVE"	},
 #endif
 	/*
 	 * XXX - this was introduced in SunOS 4.x to distinguish between
 	 * the old pre-4.x "mmap()", which:
 	 *
 	 *	only let you map devices with an "mmap" routine (e.g.,
 	 *	frame buffers) in;
 	 *
 	 *	required you to specify the mapping address;
 	 *
 	 *	returned 0 on success and -1 on failure;
 	 *
 	 * memory and which, and the 4.x "mmap()" which:
 	 *
 	 *	can map plain files;
 	 *
 	 *	can be asked to pick where to map the file;
 	 *
 	 *	returns the address where it mapped the file on success
 	 *	and -1 on failure.
 	 *
 	 * It's not actually used in source code that calls "mmap()"; the
 	 * "mmap()" routine adds it for you.
 	 *
 	 * It'd be nice to come up with some way of eliminating it from
 	 * the flags, e.g. reporting calls *without* it as "old_mmap()"
 	 * and calls with it as "mmap()".
 	 */
 #ifdef _MAP_NEW
 	{ _MAP_NEW,	"_MAP_NEW"	},
 #endif
 #ifdef MAP_GROWSDOWN
 	{ MAP_GROWSDOWN,"MAP_GROWSDOWN"	},
 #endif
 #ifdef MAP_DENYWRITE
 	{ MAP_DENYWRITE,"MAP_DENYWRITE"	},
 #endif
 #ifdef MAP_EXECUTABLE
 	{ MAP_EXECUTABLE,"MAP_EXECUTABLE"},
 #endif
 #ifdef MAP_INHERIT
 	{ MAP_INHERIT,"MAP_INHERIT"	},
 #endif
 #ifdef MAP_FILE
 	{ MAP_FILE,"MAP_FILE"},
 #endif
 #ifdef MAP_LOCKED
 	{ MAP_LOCKED,"MAP_LOCKED"},
 #endif
 	{ 0,		NULL		},
 };

 static
 int
 print_mmap(tcp,u_arg)
 struct tcb *tcp;
 long *u_arg;
 {
 	if (entering(tcp)) {
 		/* addr */
 		if (!u_arg[0])
 			tprintf("NULL, ");
 		else
 			tprintf("%#lx, ", u_arg[0]);
 		/* len */
 		tprintf("%lu, ", u_arg[1]);
 		/* prot */
 		printflags(mmap_prot, u_arg[2]);
 		tprintf(", ");
 		/* flags */
 		printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
 		addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
 		/* fd */
 		tprintf(", %ld, ", u_arg[4]);
 		/* offset */
 		tprintf("%#lx", u_arg[5]);
 	}
 	return RVAL_HEX;
 }

 #ifdef LINUX
 int sys_old_mmap(tcp)
 struct tcb *tcp;
 {
     long u_arg[6];

 #if	defined(IA64)
     int i, v;
     /*
      *  IA64 processes never call this routine, they only use the
      *  new `sys_mmap' interface.  This code converts the integer
      *  arguments that the IA32 process pushed onto the stack into
      *  longs.
      *
      *  Note that addresses with bit 31 set will be sign extended.
      *  Fortunately, those addresses are not currently being generated
      *  for IA32 processes so it's not a problem.
      */
     for (i = 0; i < 6; i++)
 	if (umove(tcp, tcp->u_arg[0] + (i * sizeof(int)), &v) == -1)
 		return 0;
 	else
 		u_arg[i] = v;
 #else	// defined(IA64)
     if (umoven(tcp, tcp->u_arg[0], sizeof u_arg, (char *) u_arg) == -1)
 	    return 0;
 #endif	// defined(IA64)
     return print_mmap(tcp, u_arg);

 }
 #endif

 int
 sys_mmap(tcp)
 struct tcb *tcp;
 {
     return print_mmap(tcp, tcp->u_arg);
 }

 int
 sys_munmap(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%#lx, %lu",
 			tcp->u_arg[0], tcp->u_arg[1]);
 	}
 	return 0;
 }

 int
 sys_mprotect(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%#lx, %lu, ",
 			tcp->u_arg[0], tcp->u_arg[1]);
 		if (!printflags(mmap_prot, tcp->u_arg[2]))
 			tprintf("PROT_???");
 	}
 	return 0;
 }

 #ifdef LINUX

 static struct xlat mremap_flags[] = {
 	{ MREMAP_MAYMOVE,	"MREMAP_MAYMOVE"	},
 	{ 0,			NULL			}
 };

 int
 sys_mremap(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%#lx, %lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1],
 			tcp->u_arg[2]);
 		printflags(mremap_flags, tcp->u_arg[3]);
 	}
 	return RVAL_HEX;
 }

 static struct xlat madvise_flags[] = {
 #ifdef MADV_NORMAL
 	{ MADV_NORMAL,		"MADV_NORMAL" },
 #endif
 #ifdef MADZV_RANDOM
 	{ MADV_RANDOM,		"MADV_RANDOM" },
 #endif
 #ifdef MADV_SEQUENTIAL
 	{ MADV_SEQUENTIAL,	"MADV_SEQUENTIAL" },
 #endif
 #ifdef MADV_WILLNEED
 	{ MADV_WILLNEED,	"MADV_WILLNEED" },
 #endif
 #ifdef MADV_DONTNED
 	{ MADV_DONTNEED,	"MADV_DONTNEED" },
 #endif
 	{ 0,			NULL },
 };


 int
 sys_madvise(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 		printflags(madvise_flags, tcp->u_arg[2]);
 	}
 	return 0;
 }


 static struct xlat mlockall_flags[] = {
 #ifdef MCL_CURRENT
 	{ MCL_CURRENT,	"MCL_CURRENT" },
 #endif
 #ifdef MCL_FUTURE
 	{ MCL_FUTURE,	"MCL_FUTURE" },
 #endif
 	{ 0,		NULL}
 };

 int
 sys_mlockall(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		printflags(mlockall_flags, tcp->u_arg[0]);
 	}
 	return 0;
 }


 #endif /* LINUX */

 #ifdef MS_ASYNC

 static struct xlat mctl_sync[] = {
 	{ MS_ASYNC,	"MS_ASYNC"	},
 	{ MS_INVALIDATE,"MS_INVALIDATE"	},
 #ifdef MS_SYNC
 	{ MS_SYNC,	"MS_SYNC"	},
 #endif
 	{ 0,		NULL		},
 };

 int
 sys_msync(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		/* addr */
 		tprintf("%#lx", tcp->u_arg[0]);
 		/* len */
 		tprintf(", %lu, ", tcp->u_arg[1]);
 		/* flags */
 		if (!printflags(mctl_sync, tcp->u_arg[2]))
 			tprintf("MS_???");
 	}
 	return 0;
 }

 #endif /* MS_ASYNC */

 #ifdef MC_SYNC

 static struct xlat mctl_funcs[] = {
 	{ MC_LOCK,	"MC_LOCK"	},
 	{ MC_LOCKAS,	"MC_LOCKAS"	},
 	{ MC_SYNC,	"MC_SYNC"	},
 	{ MC_UNLOCK,	"MC_UNLOCK"	},
 	{ MC_UNLOCKAS,	"MC_UNLOCKAS"	},
 	{ 0,		NULL		},
 };

 static struct xlat mctl_lockas[] = {
 	{ MCL_CURRENT,	"MCL_CURRENT"	},
 	{ MCL_FUTURE,	"MCL_FUTURE"	},
 	{ 0,		NULL		},
 };

 int
 sys_mctl(tcp)
 struct tcb *tcp;
 {
 	int arg, function;

 	if (entering(tcp)) {
 		/* addr */
 		tprintf("%#lx", tcp->u_arg[0]);
 		/* len */
 		tprintf(", %lu, ", tcp->u_arg[1]);
 		/* function */
 		function = tcp->u_arg[2];
 		if (!printflags(mctl_funcs, function))
 			tprintf("MC_???");
 		/* arg */
 		arg = tcp->u_arg[3];
 		tprintf(", ");
 		switch (function) {
 		case MC_SYNC:
 			if (!printflags(mctl_sync, arg))
 				tprintf("MS_???");
 			break;
 		case MC_LOCKAS:
 			if (!printflags(mctl_lockas, arg))
 				tprintf("MCL_???");
 			break;
 		default:
 			tprintf("%#x", arg);
 			break;
 		}
 	}
 	return 0;
 }

 #endif /* MC_SYNC */

 int
 sys_mincore(tcp)
 struct tcb *tcp;
 {
 	int i, len;
 	char *vec = NULL;

 	if (entering(tcp)) {
 		tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 	} else {
 		len = tcp->u_arg[1];
 		if (syserror(tcp) || tcp->u_arg[2] == 0 ||
 			(vec = malloc((u_int)len)) == NULL ||
 			umoven(tcp, tcp->u_arg[2], len, vec) < 0)
 			tprintf("%#lx", tcp->u_arg[2]);
 		else {
 			tprintf("[");
 			for (i = 0; i < len; i++) {
 				if (abbrev(tcp) && i >= max_strlen) {
 					tprintf("...");
 					break;
 				}
 				tprintf((vec[i] & 1) ? "1" : "0");
 			}
 			tprintf("]");
 		}
 		if (vec)
 			free(vec);
 	}
 	return 0;
 }

 int
 sys_getpagesize(tcp)
 struct tcb *tcp;
 {
 	if (exiting(tcp))
 		return RVAL_HEX;
 	return 0;
 }

 #if defined(LINUX) && defined(__i386__)
 int
 sys_modify_ldt(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		struct modify_ldt_ldt_s copy;
 		tprintf("%ld", tcp->u_arg[0]);
 		if (tcp->u_arg[1] == 0
 				|| tcp->u_arg[2] != sizeof (struct modify_ldt_ldt_s)
 				|| umove(tcp, tcp->u_arg[1], &copy) == -1)
 			tprintf(", %lx", tcp->u_arg[1]);
 		else {
 			tprintf(", {entry_number:%d, ", copy.entry_number);
 			if (!verbose(tcp))
 				tprintf("...}");
 			else {
 				tprintf("base_addr:%#08lx, "
 						"limit:%d, "
 						"seg_32bit:%d, "
 						"contents:%d, "
 						"read_exec_only:%d, "
 						"limit_in_pages:%d, "
 						"seg_not_present:%d, "
 						"useable:%d}",
 						copy.base_addr,
 						copy.limit,
 						copy.seg_32bit,
 						copy.contents,
 						copy.read_exec_only,
 						copy.limit_in_pages,
 						copy.seg_not_present,
 						copy.useable);
 			}
 		}
 		tprintf(", %lu", tcp->u_arg[2]);
 	}
 	return 0;
 }
 #endif /* LINUX && __i386__ */
	/*
	* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
	* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
	* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
	* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. The name of the author may not be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* $Id$
	*/

	#include "defs.h"

	#ifdef LINUX
	#include <linux/mman.h>
	#endif
	#include <sys/mman.h>

	#if defined(LINUX) && defined(__i386__)
	#include <asm/ldt.h>
	#endif

	int
	sys_brk(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%#lx", tcp->u_arg[0]);
	}
	#ifdef LINUX
	return RVAL_HEX;
	#else
	return 0;
	#endif
	}

	int
	sys_sbrk(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%lu", tcp->u_arg[0]);
	}
	return RVAL_HEX;
	}

	static struct xlat mmap_prot[] = {
	{ PROT_NONE, "PROT_NONE", },
	{ PROT_READ, "PROT_READ" },
	{ PROT_WRITE, "PROT_WRITE" },
	{ PROT_EXEC, "PROT_EXEC" },
	{ 0, NULL },
	};

	static struct xlat mmap_flags[] = {
	{ MAP_SHARED, "MAP_SHARED" },
	{ MAP_PRIVATE, "MAP_PRIVATE" },
	{ MAP_FIXED, "MAP_FIXED" },
	#ifdef MAP_ANONYMOUS
	{ MAP_ANONYMOUS,"MAP_ANONYMOUS" },
	#endif
	#ifdef MAP_RENAME
	{ MAP_RENAME, "MAP_RENAME" },
	#endif
	#ifdef MAP_NORESERVE
	{ MAP_NORESERVE,"MAP_NORESERVE" },
	#endif
	/*
	* XXX - this was introduced in SunOS 4.x to distinguish between
	* the old pre-4.x "mmap()", which:
	*
	* only let you map devices with an "mmap" routine (e.g.,
	* frame buffers) in;
	*
	* required you to specify the mapping address;
	*
	* returned 0 on success and -1 on failure;
	*
	* memory and which, and the 4.x "mmap()" which:
	*
	* can map plain files;
	*
	* can be asked to pick where to map the file;
	*
	* returns the address where it mapped the file on success
	* and -1 on failure.
	*
	* It's not actually used in source code that calls "mmap()"; the
	* "mmap()" routine adds it for you.
	*
	* It'd be nice to come up with some way of eliminating it from
	* the flags, e.g. reporting calls without it as "old_mmap()"
	* and calls with it as "mmap()".
	*/
	#ifdef _MAP_NEW
	{ _MAP_NEW, "_MAP_NEW" },
	#endif
	#ifdef MAP_GROWSDOWN
	{ MAP_GROWSDOWN,"MAP_GROWSDOWN" },
	#endif
	#ifdef MAP_DENYWRITE
	{ MAP_DENYWRITE,"MAP_DENYWRITE" },
	#endif
	#ifdef MAP_EXECUTABLE
	{ MAP_EXECUTABLE,"MAP_EXECUTABLE"},
	#endif
	#ifdef MAP_INHERIT
	{ MAP_INHERIT,"MAP_INHERIT" },
	#endif
	#ifdef MAP_FILE
	{ MAP_FILE,"MAP_FILE"},
	#endif
	#ifdef MAP_LOCKED
	{ MAP_LOCKED,"MAP_LOCKED"},
	#endif
	{ 0, NULL },
	};

	static
	int
	print_mmap(tcp,u_arg)
	struct tcb *tcp;
	long *u_arg;
	{
	if (entering(tcp)) {
	/* addr */
	if (!u_arg[0])
	tprintf("NULL, ");
	else
	tprintf("%#lx, ", u_arg[0]);
	/* len */
	tprintf("%lu, ", u_arg[1]);
	/* prot */
	printflags(mmap_prot, u_arg[2]);
	tprintf(", ");
	/* flags */
	printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
	addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
	/* fd */
	tprintf(", %ld, ", u_arg[4]);
	/* offset */
	tprintf("%#lx", u_arg[5]);
	}
	return RVAL_HEX;
	}

	#ifdef LINUX
	int sys_old_mmap(tcp)
	struct tcb *tcp;
	{
	long u_arg[6];

	#if defined(IA64)
	int i, v;
	/*
	* IA64 processes never call this routine, they only use the
	* new `sys_mmap' interface. This code converts the integer
	* arguments that the IA32 process pushed onto the stack into
	* longs.
	*
	* Note that addresses with bit 31 set will be sign extended.
	* Fortunately, those addresses are not currently being generated
	* for IA32 processes so it's not a problem.
	*/
	for (i = 0; i < 6; i++)
	if (umove(tcp, tcp->u_arg[0] + (i * sizeof(int)), &v) == -1)
	return 0;
	else
	u_arg[i] = v;
	#else // defined(IA64)
	if (umoven(tcp, tcp->u_arg[0], sizeof u_arg, (char *) u_arg) == -1)
	return 0;
	#endif // defined(IA64)
	return print_mmap(tcp, u_arg);

	}
	#endif

	int
	sys_mmap(tcp)
	struct tcb *tcp;
	{
	return print_mmap(tcp, tcp->u_arg);
	}

	int
	sys_munmap(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%#lx, %lu",
	tcp->u_arg[0], tcp->u_arg[1]);
	}
	return 0;
	}

	int
	sys_mprotect(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%#lx, %lu, ",
	tcp->u_arg[0], tcp->u_arg[1]);
	if (!printflags(mmap_prot, tcp->u_arg[2]))
	tprintf("PROT_???");
	}
	return 0;
	}

	#ifdef LINUX

	static struct xlat mremap_flags[] = {
	{ MREMAP_MAYMOVE, "MREMAP_MAYMOVE" },
	{ 0, NULL }
	};

	int
	sys_mremap(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%#lx, %lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1],
	tcp->u_arg[2]);
	printflags(mremap_flags, tcp->u_arg[3]);
	}
	return RVAL_HEX;
	}

	static struct xlat madvise_flags[] = {
	#ifdef MADV_NORMAL
	{ MADV_NORMAL, "MADV_NORMAL" },
	#endif
	#ifdef MADZV_RANDOM
	{ MADV_RANDOM, "MADV_RANDOM" },
	#endif
	#ifdef MADV_SEQUENTIAL
	{ MADV_SEQUENTIAL, "MADV_SEQUENTIAL" },
	#endif
	#ifdef MADV_WILLNEED
	{ MADV_WILLNEED, "MADV_WILLNEED" },
	#endif
	#ifdef MADV_DONTNED
	{ MADV_DONTNEED, "MADV_DONTNEED" },
	#endif
	{ 0, NULL },
	};


	int
	sys_madvise(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
	printflags(madvise_flags, tcp->u_arg[2]);
	}
	return 0;
	}


	static struct xlat mlockall_flags[] = {
	#ifdef MCL_CURRENT
	{ MCL_CURRENT, "MCL_CURRENT" },
	#endif
	#ifdef MCL_FUTURE
	{ MCL_FUTURE, "MCL_FUTURE" },
	#endif
	{ 0, NULL}
	};

	int
	sys_mlockall(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	printflags(mlockall_flags, tcp->u_arg[0]);
	}
	return 0;
	}


	#endif /* LINUX */

	#ifdef MS_ASYNC

	static struct xlat mctl_sync[] = {
	{ MS_ASYNC, "MS_ASYNC" },
	{ MS_INVALIDATE,"MS_INVALIDATE" },
	#ifdef MS_SYNC
	{ MS_SYNC, "MS_SYNC" },
	#endif
	{ 0, NULL },
	};

	int
	sys_msync(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	/* addr */
	tprintf("%#lx", tcp->u_arg[0]);
	/* len */
	tprintf(", %lu, ", tcp->u_arg[1]);
	/* flags */
	if (!printflags(mctl_sync, tcp->u_arg[2]))
	tprintf("MS_???");
	}
	return 0;
	}

	#endif /* MS_ASYNC */

	#ifdef MC_SYNC

	static struct xlat mctl_funcs[] = {
	{ MC_LOCK, "MC_LOCK" },
	{ MC_LOCKAS, "MC_LOCKAS" },
	{ MC_SYNC, "MC_SYNC" },
	{ MC_UNLOCK, "MC_UNLOCK" },
	{ MC_UNLOCKAS, "MC_UNLOCKAS" },
	{ 0, NULL },
	};

	static struct xlat mctl_lockas[] = {
	{ MCL_CURRENT, "MCL_CURRENT" },
	{ MCL_FUTURE, "MCL_FUTURE" },
	{ 0, NULL },
	};

	int
	sys_mctl(tcp)
	struct tcb *tcp;
	{
	int arg, function;

	if (entering(tcp)) {
	/* addr */
	tprintf("%#lx", tcp->u_arg[0]);
	/* len */
	tprintf(", %lu, ", tcp->u_arg[1]);
	/* function */
	function = tcp->u_arg[2];
	if (!printflags(mctl_funcs, function))
	tprintf("MC_???");
	/* arg */
	arg = tcp->u_arg[3];
	tprintf(", ");
	switch (function) {
	case MC_SYNC:
	if (!printflags(mctl_sync, arg))
	tprintf("MS_???");
	break;
	case MC_LOCKAS:
	if (!printflags(mctl_lockas, arg))
	tprintf("MCL_???");
	break;
	default:
	tprintf("%#x", arg);
	break;
	}
	}
	return 0;
	}

	#endif /* MC_SYNC */

	int
	sys_mincore(tcp)
	struct tcb *tcp;
	{
	int i, len;
	char *vec = NULL;

	if (entering(tcp)) {
	tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
	} else {
	len = tcp->u_arg[1];
	if (syserror(tcp) \|\| tcp->u_arg[2] == 0 \|\|
	(vec = malloc((u_int)len)) == NULL \|\|
	umoven(tcp, tcp->u_arg[2], len, vec) < 0)
	tprintf("%#lx", tcp->u_arg[2]);
	else {
	tprintf("[");
	for (i = 0; i < len; i++) {
	if (abbrev(tcp) && i >= max_strlen) {
	tprintf("...");
	break;
	}
	tprintf((vec[i] & 1) ? "1" : "0");
	}
	tprintf("]");
	}
	if (vec)
	free(vec);
	}
	return 0;
	}

	int
	sys_getpagesize(tcp)
	struct tcb *tcp;
	{
	if (exiting(tcp))
	return RVAL_HEX;
	return 0;
	}

	#if defined(LINUX) && defined(__i386__)
	int
	sys_modify_ldt(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	struct modify_ldt_ldt_s copy;
	tprintf("%ld", tcp->u_arg[0]);
	if (tcp->u_arg[1] == 0
	\|\| tcp->u_arg[2] != sizeof (struct modify_ldt_ldt_s)
	\|\| umove(tcp, tcp->u_arg[1], &copy) == -1)
	tprintf(", %lx", tcp->u_arg[1]);
	else {
	tprintf(", {entry_number:%d, ", copy.entry_number);
	if (!verbose(tcp))
	tprintf("...}");
	else {
	tprintf("base_addr:%#08lx, "
	"limit:%d, "
	"seg_32bit:%d, "
	"contents:%d, "
	"read_exec_only:%d, "
	"limit_in_pages:%d, "
	"seg_not_present:%d, "
	"useable:%d}",
	copy.base_addr,
	copy.limit,
	copy.seg_32bit,
	copy.contents,
	copy.read_exec_only,
	copy.limit_in_pages,
	copy.seg_not_present,
	copy.useable);
	}
	}
	tprintf(", %lu", tcp->u_arg[2]);
	}
	return 0;
	}
	#endif /* LINUX && __i386__ */