/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <fcntl.h>
#include <string.h>
#include <dirent.h>
#include <limits.h>
#include <link.h>
#include <libelf.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mkdev.h>
#include <libproc.h>

struct totals {
	ulong_t total_size;
	ulong_t total_swap;
	ulong_t total_rss;
	ulong_t total_anon;
	ulong_t total_locked;
};

typedef int proc_xmap_f(void *, const prxmap_t *, const char *, int, int);

static	int	xmapping_iter(struct ps_prochandle *, proc_xmap_f *, void *,
    int);
static	int	rmapping_iter(struct ps_prochandle *, proc_map_f *, void *);

static	int	look_map(void *, const prmap_t *, const char *);
static	int	look_smap(void *, const prxmap_t *, const char *, int, int);
static	int	look_xmap(void *, const prxmap_t *, const char *, int, int);
static	int	look_xmap_nopgsz(void *, const prxmap_t *, const char *,
    int, int);

static int gather_map(void *, const prmap_t *, const char *);
static int gather_xmap(void *, const prxmap_t *, const char *, int, int);
static int iter_map(proc_map_f *, void *);
static int iter_xmap(proc_xmap_f *, void *);

static	int	perr(char *);
static	void	printK(long, int);
static	char	*mflags(uint_t);

static	int	lflag = 0;
static	int	aflag = 0;
static	int	addr_width, size_width;
static	char	*command;
static	char	*procname;
static	struct ps_prochandle *Pr;

typedef struct lwpstack {
	lwpid_t	lwps_lwpid;
	stack_t	lwps_stack;
} lwpstack_t;

typedef struct {
	prxmap_t	md_xmap;
	prmap_t		md_map;
	char		*md_objname;
	int		md_last;
	int		md_doswap;
} mapdata_t;

static	mapdata_t	*maps;
static	int		map_count;
static	int		map_alloc;

static	lwpstack_t *stacks = NULL;
static	uint_t	nstacks = 0;

#define	MAX_TRIES	5

static int
getstack(void *data, const lwpstatus_t *lsp)
{
	int *np = (int *)data;

	if (Plwp_alt_stack(Pr, lsp->pr_lwpid, &stacks[*np].lwps_stack) == 0) {
		stacks[*np].lwps_stack.ss_flags |= SS_ONSTACK;
		stacks[*np].lwps_lwpid = lsp->pr_lwpid;
		(*np)++;
	}

	if (Plwp_main_stack(Pr, lsp->pr_lwpid, &stacks[*np].lwps_stack) == 0) {
		stacks[*np].lwps_lwpid = lsp->pr_lwpid;
		(*np)++;
	}

	return (0);
}

/*
 * We compare the high memory addresses since stacks are faulted in from
 * high memory addresses to low memory addresses, and our prmap_t
 * structures identify only the range of addresses that have been faulted
 * in so far.
 */
static int
cmpstacks(const void *ap, const void *bp)
{
	const lwpstack_t *as = ap;
	const lwpstack_t *bs = bp;
	uintptr_t a = (uintptr_t)as->lwps_stack.ss_sp + as->lwps_stack.ss_size;
	uintptr_t b = (uintptr_t)bs->lwps_stack.ss_sp + bs->lwps_stack.ss_size;

	if (a < b)
		return (1);
	if (a > b)
		return (-1);
	return (0);
}


int
main(int argc, char **argv)
{
	int rflag = 0, sflag = 0, xflag = 0;
	int errflg = 0, Sflag = 0;
	int rc = 0;
	int opt;
	const char *bar8 = "-------";
	const char *bar16 = "----------";
	const char *bar;
	struct rlimit rlim;
	struct stat64 statbuf;
	char buf[128];
	int mapfd;

	if ((command = strrchr(argv[0], '/')) != NULL)
		command++;
	else
		command = argv[0];

	while ((opt = getopt(argc, argv, "arsxSlF")) != EOF) {
		switch (opt) {
		case 'a':		/* include shared mappings in -[xS] */
			aflag = 1;
			break;
		case 'r':		/* show reserved mappings */
			rflag = 1;
			break;
		case 's':		/* show hardware page sizes */
			sflag = 1;
			break;
		case 'S':		/* show swap reservations */
			Sflag = 1;
			break;
		case 'x':		/* show extended mappings */
			xflag = 1;
			break;
		case 'l':		/* show unresolved link map names */
			lflag = 1;
			break;
		case 'F':
			/*
			 * Since we grab the process readonly now, the -F flag
			 * is meaningless.  Consume it anyway it for backwards
			 * compatbility.
			 */
			break;
		default:
			errflg = 1;
			break;
		}
	}

	argc -= optind;
	argv += optind;

	if ((Sflag && (xflag || rflag || sflag)) || (xflag && rflag) ||
		(aflag && (!xflag && !Sflag))) {
		errflg = 1;
	}

	if (errflg || argc <= 0) {
		(void) fprintf(stderr,
		    "usage:\t%s [-rslF] { pid | core } ...\n", command);
		(void) fprintf(stderr,
		    "\t\t(report process address maps)\n");
		(void) fprintf(stderr,
		    "\t%s -x [-aslF] pid ...\n", command);
		(void) fprintf(stderr,
		    "\t\t(show resident/anon/locked mapping details)\n");
		(void) fprintf(stderr,
		    "\t%s -S [-alF] { pid | core } ...\n", command);
		(void) fprintf(stderr,
		    "\t\t(show swap reservations)\n\n");
		(void) fprintf(stderr,
		    "\t-a: include shared mappings in -[xS] summary\n");
		(void) fprintf(stderr,
		    "\t-r: show reserved address maps\n");
		(void) fprintf(stderr,
		    "\t-s: show hardware page sizes\n");
		(void) fprintf(stderr,
		    "\t-l: show unresolved dynamic linker map names\n");
		(void) fprintf(stderr,
		    "\t-F: force grabbing of the target process\n");
		return (2);
	}

	/*
	 * Make sure we'll have enough file descriptors to handle a target
	 * that has many many mappings.
	 */
	if (getrlimit(RLIMIT_NOFILE, &rlim) == 0) {
		rlim.rlim_cur = rlim.rlim_max;
		(void) setrlimit(RLIMIT_NOFILE, &rlim);
	}

	while (argc-- > 0) {
		char *arg;
		int gcode;
		psinfo_t psinfo;
		int tries = 0;

		if ((Pr = proc_arg_grab(arg = *argv++, PR_ARG_ANY,
		    PGRAB_RDONLY, &gcode)) == NULL) {
			(void) fprintf(stderr, "%s: cannot examine %s: %s\n",
			    command, arg, Pgrab_error(gcode));
			rc++;
			continue;
		}

		procname = arg;		/* for perr() */

		addr_width = (Pstatus(Pr)->pr_dmodel == PR_MODEL_LP64) ? 16 : 8;
		size_width = (Pstatus(Pr)->pr_dmodel == PR_MODEL_LP64) ? 11 : 8;
		bar = addr_width == 8 ? bar8 : bar16;
		(void) memcpy(&psinfo, Ppsinfo(Pr), sizeof (psinfo_t));
		proc_unctrl_psinfo(&psinfo);

		if (Pstate(Pr) != PS_DEAD) {
			(void) snprintf(buf, sizeof (buf),
			    "/proc/%d/map", (int)psinfo.pr_pid);
			if ((mapfd = open(buf, O_RDONLY)) < 0) {
				(void) fprintf(stderr, "%s: cannot "
				    "examine %s: lost control of "
				    "process\n", command, arg);
				rc++;
				Prelease(Pr, 0);
				continue;
			}
		} else {
			mapfd = -1;
		}

again:
		map_count = 0;

		if (Pstate(Pr) == PS_DEAD) {
			(void) printf("core '%s' of %d:\t%.70s\n",
			    arg, (int)psinfo.pr_pid, psinfo.pr_psargs);

			if (rflag || sflag || xflag || Sflag) {
				(void) printf("  -%c option is not compatible "
				    "with core files\n", xflag ? 'x' :
				    sflag ? 's' : rflag ? 'r' : 'S');
				Prelease(Pr, 0);
				rc++;
				continue;
			}

		} else {
			(void) printf("%d:\t%.70s\n",
			    (int)psinfo.pr_pid, psinfo.pr_psargs);
		}

		if (!(Pstatus(Pr)->pr_flags & PR_ISSYS)) {
			struct totals t;

			/*
			 * Since we're grabbing the process readonly, we need
			 * to make sure the address space doesn't change during
			 * execution.
			 */
			if (Pstate(Pr) != PS_DEAD) {
				if (tries++ == MAX_TRIES) {
					Prelease(Pr, 0);
					(void) close(mapfd);
					(void) fprintf(stderr, "%s: cannot "
					    "examine %s: address space is "
					    "changing\n", command, arg);
					continue;
				}

				if (fstat64(mapfd, &statbuf) != 0) {
					Prelease(Pr, 0);
					(void) close(mapfd);
					(void) fprintf(stderr, "%s: cannot "
					    "examine %s: lost control of "
					    "process\n", command, arg);
					continue;
				}
			}

			nstacks = psinfo.pr_nlwp * 2;
			stacks = calloc(nstacks, sizeof (stacks[0]));
			if (stacks != NULL) {
				int n = 0;
				(void) Plwp_iter(Pr, getstack, &n);
				qsort(stacks, nstacks, sizeof (stacks[0]),
				    cmpstacks);
			}

			(void) memset(&t, 0, sizeof (t));

			if (Pgetauxval(Pr, AT_BASE) != -1L &&
			    Prd_agent(Pr) == NULL) {
				(void) fprintf(stderr, "%s: warning: "
				    "librtld_db failed to initialize; "
				    "shared library information will not be "
				    "available\n", command);
			}

			/*
			 * Gather data
			 */
			if (xflag)
				rc += xmapping_iter(Pr, gather_xmap, NULL, 0);
			else if (Sflag)
				rc += xmapping_iter(Pr, gather_xmap, NULL, 1);
			else {
				if (rflag)
					rc += rmapping_iter(Pr, gather_map,
					    NULL);
				else if (sflag)
					rc += xmapping_iter(Pr, gather_xmap,
					    NULL, 0);
				else
					rc += Pmapping_iter(Pr, gather_map,
					    NULL);
			}

			/*
			 * Ensure mappings are consistent.
			 */
			if (Pstate(Pr) != PS_DEAD) {
				struct stat64 newbuf;

				if (fstat64(mapfd, &newbuf) != 0 ||
				    memcmp(&newbuf.st_mtim, &statbuf.st_mtim,
				    sizeof (newbuf.st_mtim)) != 0) {
					if (stacks != NULL) {
						free(stacks);
						stacks = NULL;
					}
					goto again;
				}
			}

			/*
			 * Display data.
			 */
			if (xflag) {
				(void) printf("%*s%*s%*s%*s%*s "
				    "%sMode   Mapped File\n",
				    addr_width, "Address",
				    size_width, "Kbytes",
				    size_width, "RSS",
				    size_width, "Anon",
				    size_width, "Locked",
				    sflag ? "Pgsz " : "");

				rc += iter_xmap(sflag ?  look_xmap :
				    look_xmap_nopgsz, &t);

				(void) printf("%s%s %s %s %s %s\n",
				    addr_width == 8 ? "-" : "------",
				    bar, bar, bar, bar, bar);

				(void) printf("%stotal Kb", addr_width == 16 ?
				    "        " : "");

				printK(t.total_size, size_width);
				printK(t.total_rss, size_width);
				printK(t.total_anon, size_width);
				printK(t.total_locked, size_width);

				(void) printf("\n");

			} else if (Sflag) {
				(void) printf("%*s%*s%*s Mode   Mapped File\n",
				    addr_width, "Address",
				    size_width, "Kbytes",
				    size_width, "Swap");

				rc += iter_xmap(look_xmap_nopgsz, &t);

				(void) printf("%s%s %s %s\n",
				    addr_width == 8 ? "-" : "------",
				    bar, bar, bar);

				(void) printf("%stotal Kb", addr_width == 16 ?
				    "        " : "");

				printK(t.total_size, size_width);
				printK(t.total_swap, size_width);

				(void) printf("\n");

			} else {

				if (rflag) {
					rc += iter_map(look_map, &t);
				} else if (sflag) {
					(void) printf("%*s %*s %4s %-6s %s\n",
					    addr_width, "Address", size_width,
					    "Bytes", "Pgsz", "Mode ",
					    "Mapped File");
					rc += iter_xmap(look_smap, &t);
				} else {
					rc += iter_map(look_map, &t);
				}

				(void) printf(" %stotal  %*luK\n",
				    addr_width == 16 ?
				    "        " : "",
				    size_width, t.total_size);
			}

			if (stacks != NULL) {
				free(stacks);
				stacks = NULL;
			}

		}

		Prelease(Pr, 0);
		if (mapfd != -1)
			(void) close(mapfd);
	}

	return (rc);
}

static char *
make_name(struct ps_prochandle *Pr, uintptr_t addr, const char *mapname,
	char *buf, size_t bufsz)
{
	const pstatus_t *Psp = Pstatus(Pr);
	char fname[100];
	struct stat statb;
	int len;

	if (!lflag && strcmp(mapname, "a.out") == 0 &&
	    Pexecname(Pr, buf, bufsz) != NULL)
		return (buf);

	if (Pobjname(Pr, addr, buf, bufsz) != NULL) {
		if (lflag)
			return (buf);
		if ((len = resolvepath(buf, buf, bufsz)) > 0) {
			buf[len] = '\0';
			return (buf);
		}
	}

	if (Pstate(Pr) != PS_DEAD && *mapname != '\0') {
		(void) snprintf(fname, sizeof (fname), "/proc/%d/object/%s",
			(int)Psp->pr_pid, mapname);
		if (stat(fname, &statb) == 0) {
			dev_t dev = statb.st_dev;
			ino_t ino = statb.st_ino;
			(void) snprintf(buf, bufsz, "dev:%lu,%lu ino:%lu",
				(ulong_t)major(dev), (ulong_t)minor(dev), ino);
			return (buf);
		}
	}

	return (NULL);
}

static char *
anon_name(char *name, const pstatus_t *Psp,
    uintptr_t vaddr, size_t size, int mflags, int shmid)
{
	if (mflags & MA_ISM) {
		if (shmid == -1)
			(void) snprintf(name, PATH_MAX, "  [ %s shmid=null ]",
			    (mflags & MA_NORESERVE) ? "ism" : "dism");
		else
			(void) snprintf(name, PATH_MAX, "  [ %s shmid=0x%x ]",
			    (mflags & MA_NORESERVE) ? "ism" : "dism", shmid);
	} else if (mflags & MA_SHM) {
		if (shmid == -1)
			(void) sprintf(name, "  [ shmid=null ]");
		else
			(void) sprintf(name, "  [ shmid=0x%x ]", shmid);
	} else if (vaddr + size > Psp->pr_stkbase &&
	    vaddr < Psp->pr_stkbase + Psp->pr_stksize) {
		(void) strcpy(name, "  [ stack ]");
	} else if ((mflags & MA_ANON) &&
	    vaddr + size > Psp->pr_brkbase &&
	    vaddr < Psp->pr_brkbase + Psp->pr_brksize) {
		(void) strcpy(name, "  [ heap ]");
	} else {
		lwpstack_t key, *stk;

		key.lwps_stack.ss_sp = (void *)vaddr;
		key.lwps_stack.ss_size = size;
		if (nstacks > 0 &&
		    (stk = bsearch(&key, stacks, nstacks, sizeof (stacks[0]),
		    cmpstacks)) != NULL) {
			(void) snprintf(name, PATH_MAX, "  [ %s tid=%d ]",
			    (stk->lwps_stack.ss_flags & SS_ONSTACK) ?
			    "altstack" : "stack",
			    stk->lwps_lwpid);
		} else if (Pstate(Pr) != PS_DEAD) {
			(void) strcpy(name, "  [ anon ]");
		} else {
			return (NULL);
		}
	}

	return (name);
}

static int
rmapping_iter(struct ps_prochandle *Pr, proc_map_f *func, void *cd)
{
	char mapname[PATH_MAX];
	int mapfd, nmap, i, rc;
	struct stat st;
	prmap_t *prmapp, *pmp;
	ssize_t n;

	(void) snprintf(mapname, sizeof (mapname),
	    "/proc/%d/rmap", (int)Pstatus(Pr)->pr_pid);

	if ((mapfd = open(mapname, O_RDONLY)) < 0 || fstat(mapfd, &st) != 0) {
		if (mapfd >= 0)
			(void) close(mapfd);
		return (perr(mapname));
	}

	nmap = st.st_size / sizeof (prmap_t);
	prmapp = malloc((nmap + 1) * sizeof (prmap_t));

	if ((n = pread(mapfd, prmapp, (nmap + 1) * sizeof (prmap_t), 0L)) < 0) {
		(void) close(mapfd);
		free(prmapp);
		return (perr("read rmap"));
	}

	(void) close(mapfd);
	nmap = n / sizeof (prmap_t);

	for (i = 0, pmp = prmapp; i < nmap; i++, pmp++) {
		if ((rc = func(cd, pmp, NULL)) != 0) {
			free(prmapp);
			return (rc);
		}
	}

	free(prmapp);
	return (0);
}

static int
xmapping_iter(struct ps_prochandle *Pr, proc_xmap_f *func, void *cd, int doswap)
{
	char mapname[PATH_MAX];
	int mapfd, nmap, i, rc;
	struct stat st;
	prxmap_t *prmapp, *pmp;
	ssize_t n;

	(void) snprintf(mapname, sizeof (mapname),
	    "/proc/%d/xmap", (int)Pstatus(Pr)->pr_pid);

	if ((mapfd = open(mapname, O_RDONLY)) < 0 || fstat(mapfd, &st) != 0) {
		if (mapfd >= 0)
			(void) close(mapfd);
		return (perr(mapname));
	}

	nmap = st.st_size / sizeof (prxmap_t);
	nmap *= 2;
again:
	prmapp = malloc((nmap + 1) * sizeof (prxmap_t));

	if ((n = pread(mapfd, prmapp, (nmap + 1) * sizeof (prxmap_t), 0)) < 0) {
		(void) close(mapfd);
		free(prmapp);
		return (perr("read xmap"));
	}

	if (nmap < n / sizeof (prxmap_t)) {
		free(prmapp);
		nmap *= 2;
		goto again;
	}

	(void) close(mapfd);
	nmap = n / sizeof (prxmap_t);

	for (i = 0, pmp = prmapp; i < nmap; i++, pmp++) {
		if ((rc = func(cd, pmp, NULL, i == nmap - 1, doswap)) != 0) {
			free(prmapp);
			return (rc);
		}
	}

	free(prmapp);
	return (0);
}

/*ARGSUSED*/
static int
look_map(void *data, const prmap_t *pmp, const char *object_name)
{
	struct totals *t = data;
	const pstatus_t *Psp = Pstatus(Pr);
	size_t size = (pmp->pr_size + 1023) / 1024;
	char mname[PATH_MAX];
	char *lname = NULL;

	/*
	 * If the mapping is not anon or not part of the heap, make a name
	 * for it.  We don't want to report the heap as a.out's data.
	 */
	if (!(pmp->pr_mflags & MA_ANON) ||
	    pmp->pr_vaddr + pmp->pr_size <= Psp->pr_brkbase ||
	    pmp->pr_vaddr >= Psp->pr_brkbase + Psp->pr_brksize) {
		lname = make_name(Pr, pmp->pr_vaddr, pmp->pr_mapname,
		    mname, sizeof (mname));
	}

	if (lname == NULL &&
	    ((pmp->pr_mflags & MA_ANON) || Pstate(Pr) == PS_DEAD)) {
		lname = anon_name(mname, Psp, pmp->pr_vaddr,
		    pmp->pr_size, pmp->pr_mflags, pmp->pr_shmid);
	}

	(void) printf(lname ? "%.*lX %*luK %-6s %s\n" : "%.*lX %*luK %s\n",
	    addr_width, (uintptr_t)pmp->pr_vaddr,
	    size_width - 1, size, mflags(pmp->pr_mflags), lname);

	t->total_size += size;
	return (0);
}

static void
printK(long value, int width)
{
	if (value == 0)
		(void) printf(width == 8 ? "       -" : "          -");
	else
		(void) printf(" %*lu", width - 1, value);
}

static const char *
pagesize(const prxmap_t *pmp)
{
	int pagesize = pmp->pr_hatpagesize;
	static char buf[32];

	if (pagesize == 0) {
		return ("-"); /* no underlying HAT mapping */
	}

	if (pagesize >= 1024 && (pagesize % 1024) == 0) {
		if ((pagesize % (1024 * 1024 * 1024)) == 0)
			(void) snprintf(buf, sizeof (buf), "%dG",
			    pagesize / (1024 * 1024 * 1024));
		else if ((pagesize % (1024 * 1024)) == 0)
			(void) snprintf(buf, sizeof (buf), "%dM",
			    pagesize / (1024 * 1024));
		else
			(void) snprintf(buf, sizeof (buf), "%dK",
			    pagesize / 1024);
	} else
		(void) snprintf(buf, sizeof (buf), "%db", pagesize);

	return (buf);
}

/*ARGSUSED*/
static int
look_smap(void *data,
	const prxmap_t *pmp,
	const char *object_name,
	int last, int doswap)
{
	struct totals *t = data;
	const pstatus_t *Psp = Pstatus(Pr);
	size_t size = (pmp->pr_size + 1023) / 1024;
	char mname[PATH_MAX];
	char *lname = NULL;
	const char *format;

	/*
	 * If the mapping is not anon or not part of the heap, make a name
	 * for it.  We don't want to report the heap as a.out's data.
	 */
	if (!(pmp->pr_mflags & MA_ANON) ||
	    pmp->pr_vaddr + pmp->pr_size <= Psp->pr_brkbase ||
	    pmp->pr_vaddr >= Psp->pr_brkbase + Psp->pr_brksize) {
		lname = make_name(Pr, pmp->pr_vaddr, pmp->pr_mapname,
		    mname, sizeof (mname));
	}

	if (lname == NULL &&
	    ((pmp->pr_mflags & MA_ANON) || Pstate(Pr) == PS_DEAD)) {
		lname = anon_name(mname, Psp, pmp->pr_vaddr,
		    pmp->pr_size, pmp->pr_mflags, pmp->pr_shmid);
	}

	if (lname != NULL)
		format = "%.*lX %*luK %4s %-6s %s\n";
	else
		format = "%.*lX %*luK %4s %s\n";

	(void) printf(format, addr_width, (uintptr_t)pmp->pr_vaddr,
	    size_width - 1, size,
	    pagesize(pmp), mflags(pmp->pr_mflags), lname);

	t->total_size += size;
	return (0);
}

#define	ANON(x)	((aflag || (((x)->pr_mflags & MA_SHARED) == 0)) ? \
	    ((x)->pr_anon) : 0)

/*ARGSUSED*/
static int
look_xmap(void *data,
	const prxmap_t *pmp,
	const char *object_name,
	int last, int doswap)
{
	struct totals *t = data;
	const pstatus_t *Psp = Pstatus(Pr);
	char mname[PATH_MAX];
	char *lname = NULL;
	char *ln;

	/*
	 * If the mapping is not anon or not part of the heap, make a name
	 * for it.  We don't want to report the heap as a.out's data.
	 */
	if (!(pmp->pr_mflags & MA_ANON) ||
	    pmp->pr_vaddr + pmp->pr_size <= Psp->pr_brkbase ||
	    pmp->pr_vaddr >= Psp->pr_brkbase + Psp->pr_brksize) {
		lname = make_name(Pr, pmp->pr_vaddr, pmp->pr_mapname,
		    mname, sizeof (mname));
	}

	if (lname != NULL) {
		if ((ln = strrchr(lname, '/')) != NULL)
			lname = ln + 1;
	} else if ((pmp->pr_mflags & MA_ANON) || Pstate(Pr) == PS_DEAD) {
		lname = anon_name(mname, Psp, pmp->pr_vaddr,
		    pmp->pr_size, pmp->pr_mflags, pmp->pr_shmid);
	}

	(void) printf("%.*lX", addr_width, (ulong_t)pmp->pr_vaddr);

	printK((pmp->pr_size + 1023) / 1024, size_width);
	printK(pmp->pr_rss * (pmp->pr_pagesize / 1024), size_width);
	printK(ANON(pmp) * (pmp->pr_pagesize / 1024), size_width);
	printK(pmp->pr_locked * (pmp->pr_pagesize / 1024), size_width);
	(void) printf(lname ? " %4s %-6s %s\n" : " %4s %s\n",
	    pagesize(pmp), mflags(pmp->pr_mflags), lname);

	t->total_size += (pmp->pr_size + 1023) / 1024;
	t->total_rss += pmp->pr_rss * (pmp->pr_pagesize / 1024);
	t->total_anon += ANON(pmp) * (pmp->pr_pagesize / 1024);
	t->total_locked += (pmp->pr_locked * (pmp->pr_pagesize / 1024));

	return (0);
}

/*ARGSUSED*/
static int
look_xmap_nopgsz(void *data,
	const prxmap_t *pmp,
	const char *object_name,
	int last, int doswap)
{
	struct totals *t = data;
	const pstatus_t *Psp = Pstatus(Pr);
	char mname[PATH_MAX];
	char *lname = NULL;
	char *ln;
	static uintptr_t prev_vaddr;
	static size_t prev_size;
	static offset_t prev_offset;
	static int prev_mflags;
	static char *prev_lname;
	static char prev_mname[PATH_MAX];
	static ulong_t prev_rss;
	static ulong_t prev_anon;
	static ulong_t prev_locked;
	static ulong_t prev_swap;
	int merged = 0;
	static int first = 1;
	ulong_t swap = 0;
	int kperpage;

	/*
	 * Calculate swap reservations
	 */
	if (pmp->pr_mflags & MA_SHARED) {
		if (aflag && (pmp->pr_mflags & MA_NORESERVE) == 0) {
			/* Swap reserved for entire non-ism SHM */
			swap = pmp->pr_size / pmp->pr_pagesize;
		}
	} else if (pmp->pr_mflags & MA_NORESERVE) {
		/* Swap reserved on fault for each anon page */
		swap = pmp->pr_anon;
	} else if (pmp->pr_mflags & MA_WRITE) {
		/* Swap reserve for entire writable segment */
		swap = pmp->pr_size / pmp->pr_pagesize;
	}

	/*
	 * If the mapping is not anon or not part of the heap, make a name
	 * for it.  We don't want to report the heap as a.out's data.
	 */
	if (!(pmp->pr_mflags & MA_ANON) ||
	    pmp->pr_vaddr + pmp->pr_size <= Psp->pr_brkbase ||
	    pmp->pr_vaddr >= Psp->pr_brkbase + Psp->pr_brksize) {
		lname = make_name(Pr, pmp->pr_vaddr, pmp->pr_mapname,
		    mname, sizeof (mname));
	}

	if (lname != NULL) {
		if ((ln = strrchr(lname, '/')) != NULL)
			lname = ln + 1;
	} else if ((pmp->pr_mflags & MA_ANON) || Pstate(Pr) == PS_DEAD) {
		lname = anon_name(mname, Psp, pmp->pr_vaddr,
		    pmp->pr_size, pmp->pr_mflags, pmp->pr_shmid);
	}

	kperpage = pmp->pr_pagesize / 1024;

	t->total_size += (pmp->pr_size + 1023) / 1024;
	t->total_rss += pmp->pr_rss * kperpage;
	t->total_anon += ANON(pmp) * kperpage;
	t->total_locked += pmp->pr_locked * kperpage;
	t->total_swap += swap * kperpage;

	if (first == 1) {
		first = 0;
		prev_vaddr = pmp->pr_vaddr;
		prev_size = pmp->pr_size;
		prev_offset = pmp->pr_offset;
		prev_mflags = pmp->pr_mflags;
		if (lname == NULL) {
			prev_lname = NULL;
		} else {
			(void) strcpy(prev_mname, lname);
			prev_lname = prev_mname;
		}
		prev_rss = pmp->pr_rss * kperpage;
		prev_anon = ANON(pmp) * kperpage;
		prev_locked = pmp->pr_locked * kperpage;
		prev_swap = swap * kperpage;
		if (last == 0) {
			return (0);
		}
		merged = 1;
	} else if (prev_vaddr + prev_size == pmp->pr_vaddr &&
	    prev_mflags == pmp->pr_mflags &&
	    ((prev_mflags & MA_ISM) ||
		prev_offset + prev_size == pmp->pr_offset) &&
	    ((lname == NULL && prev_lname == NULL) ||
		(lname != NULL && prev_lname != NULL &&
		    strcmp(lname, prev_lname) == 0))) {
		prev_size += pmp->pr_size;
		prev_rss += pmp->pr_rss * kperpage;
		prev_anon += ANON(pmp) * kperpage;
		prev_locked += pmp->pr_locked * kperpage;
		prev_swap += swap * kperpage;
		if (last == 0) {
			return (0);
		}
		merged = 1;
	}

	(void) printf("%.*lX", addr_width, (ulong_t)prev_vaddr);
	printK((prev_size + 1023) / 1024, size_width);

	if (doswap)
		printK(prev_swap, size_width);
	else {
		printK(prev_rss, size_width);
		printK(prev_anon, size_width);
		printK(prev_locked, size_width);
	}
	(void) printf(prev_lname ? " %-6s %s\n" : " %s\n",
	    mflags(prev_mflags), prev_lname);

	if (last == 0) {
		prev_vaddr = pmp->pr_vaddr;
		prev_size = pmp->pr_size;
		prev_offset = pmp->pr_offset;
		prev_mflags = pmp->pr_mflags;
		if (lname == NULL) {
			prev_lname = NULL;
		} else {
			(void) strcpy(prev_mname, lname);
			prev_lname = prev_mname;
		}
		prev_rss = pmp->pr_rss * kperpage;
		prev_anon = ANON(pmp) * kperpage;
		prev_locked = pmp->pr_locked * kperpage;
		prev_swap = swap * kperpage;
	} else if (merged == 0) {
		(void) printf("%.*lX", addr_width, (ulong_t)pmp->pr_vaddr);
		printK((pmp->pr_size + 1023) / 1024, size_width);
		if (doswap)
			printK(swap * kperpage, size_width);
		else {
			printK(pmp->pr_rss * kperpage, size_width);
			printK(ANON(pmp) * kperpage, size_width);
			printK(pmp->pr_locked * kperpage, size_width);
		}
		(void) printf(lname ? " %-6s %s\n" : " %s\n",
		    mflags(pmp->pr_mflags), lname);
	}

	if (last != 0)
		first = 1;

	return (0);
}

static int
perr(char *s)
{
	if (s)
		(void) fprintf(stderr, "%s: ", procname);
	else
		s = procname;
	perror(s);
	return (1);
}

static char *
mflags(uint_t arg)
{
	static char code_buf[80];
	char *str = code_buf;

	/*
	 * rwxsR
	 *
	 * r - segment is readable
	 * w - segment is writable
	 * x - segment is executable
	 * s - segment is shared
	 * R - segment is mapped MAP_NORESERVE
	 *
	 */
	(void) sprintf(str, "%c%c%c%c%c%c",
	    arg & MA_READ ? 'r' : '-',
	    arg & MA_WRITE ? 'w' : '-',
	    arg & MA_EXEC ? 'x' : '-',
	    arg & MA_SHARED ? 's' : '-',
	    arg & MA_NORESERVE ? 'R' : '-',
	    arg & MA_RESERVED1 ? '*' : ' ');

	return (str);
}

static mapdata_t *
nextmap(void)
{
	mapdata_t *newmaps;
	int next;

	if (map_count == map_alloc) {
		if (map_alloc == 0)
			next = 16;
		else
			next = map_alloc * 2;

		newmaps = realloc(maps, next * sizeof (mapdata_t));
		if (newmaps == NULL) {
			(void) perr("failed to allocate maps");
			exit(1);
		}
		(void) memset(newmaps + map_alloc, '\0',
		    (next - map_alloc) * sizeof (mapdata_t));

		map_alloc = next;
		maps = newmaps;
	}

	return (&maps[map_count++]);
}

/*ARGSUSED*/
static int
gather_map(void *ignored, const prmap_t *map, const char *objname)
{
	mapdata_t *data = nextmap();

	data->md_map = *map;
	if (data->md_objname != NULL)
		free(data->md_objname);
	data->md_objname = objname ? strdup(objname) : NULL;

	return (0);
}

/*ARGSUSED*/
static int
gather_xmap(void *ignored, const prxmap_t *xmap, const char *objname,
    int last, int doswap)
{
	mapdata_t *data = nextmap();

	data->md_xmap = *xmap;
	if (data->md_objname != NULL)
		free(data->md_objname);
	data->md_objname = objname ? strdup(objname) : NULL;
	data->md_last = last;
	data->md_doswap = doswap;

	return (0);
}

static int
iter_map(proc_map_f *func, void *data)
{
	int i;
	int ret;

	for (i = 0; i < map_count; i++) {
		if ((ret = func(data, &maps[i].md_map,
		    maps[i].md_objname)) != 0)
			return (ret);
	}

	return (0);
}

static int
iter_xmap(proc_xmap_f *func, void *data)
{
	int i;
	int ret;

	for (i = 0; i < map_count; i++) {
		if ((ret = func(data, &maps[i].md_xmap, maps[i].md_objname,
		    maps[i].md_last, maps[i].md_doswap)) != 0)
			return (ret);
	}

	return (0);
}