Update.

1997-09-11 04:36  Ulrich Drepper  <drepper@cygnus.com>

	* db2/db_int.h: Define __set_errno if not yet available.
	* db2/btree/bt_rec.c: Use __set_errno to set errno value.
	* db2/clib/getlong.c: Likewise.
	* db2/db185/db185.c: Likewise.
	* db2/db185/db185_int.h: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/lock/lock_deadlock.c: Likewise.
	* db2/log/log_archive.c: Likewise.

	* elf/dl-profile.c: Implement mcount function.

	* gmon/gmon.c: Use __profil not profil because of namespace pollution.
	* gmon/mcount.c: Remove BSD kernel code.
	Use compare&swap instruction if possible to change state variable.
	Optimize frompc folding.
	* gmon/sys/gmon.h (struct gmonparam): Change state field to long int.
	* sysdeps/i386/i486/atomicity.h: New file.
	* sysdeps/stub/atomicity.h: New file.
	* sysdeps/mach/hurd/profil.c: Define function as __profil and make
	profil weak alias.
	* sysdeps/posix/profil.c: Likewise.

	* string/bits/string2.h: New file.
	* include/bits/string2.h: New file.
	* string/Makefile (routines): Add mempcpy.
	(tests): Add inl-tester.
	Remove _D__NO_STRING_INLINES from CFLAGS-* variables.
	* sysdeps/generic/mempcpy.c: New file.
	* sysdeps/generic/memccpy.c: Undef function name to enable definition
	as macro.
	* sysdeps/generic/memchr.c: Likewise.
	* sysdeps/generic/memcmp.c: Likewise.
	* sysdeps/generic/memmem.c: Likewise.
	* sysdeps/generic/memmove.c: Likewise.
	* sysdeps/generic/strcat.c: Likewise.
	* sysdeps/generic/strchr.c: Likewise.
	* sysdeps/generic/strcmp.c: Likewise.
	* sysdeps/generic/strcpy.c: Likewise.
	* sysdeps/generic/strcspn.c: Likewise.
	* sysdeps/generic/strlen.c: Likewise.
	* sysdeps/generic/strncat.c: Likewise.
	* sysdeps/generic/strncmp.c: Likewise.
	* sysdeps/generic/strncpy.c: Likewise.
	* sysdeps/generic/strpbrk.c: Likewise.
	* sysdeps/generic/strrchr.c: Likewise.
	* sysdeps/generic/strsep.c: Likewise.
	* sysdeps/generic/strspn.c: Likewise.
	* sysdeps/generic/strstr.c: Likewise.
	* sysdeps/generic/strtok.c: Likewise.
	* sysdeps/generic/strtok_r.c: Likewise.
	* sysdeps/i386/memset.c: Likewise.
	* sysdeps/i386/bits/string.h: Correct a few types and constraints.
	* sysdeps/i386/i486/bits/string.h: Heavy rewrites and optimizations.
	* string/stratcliff.c: Undefine __USE_STRING_INLINES.
	* string/tst-strlen.c: Likewise.
	* string/string.h: Add prototype for mempcpy.  Include bits/string2.h
	header always if optimizing.
	* intl/dcgettext.c: Don't unconditionally define stpcpy, only if not
	yet defined.
	* intl/l10nflist.c: Likewise.

	* string/tester.c: Add copyright and make little cleanups.

	* inet/test_ifindex.c: Change type of ni variable to unsigned int.

	* locale/programs/ld-ctype.c (struct locale_ctype_t): Change type
	of fields map_collection_max and map_collection_act to size_t.

	* nss/libnss_files.map: Group entries.

	* posix/unistd.h: Add prototype for __setpgid and __profil.

	* sysdeps/generic/crypt.h: Declare __crypt_r.

	* sysdeps/i386/bits/select.h: Fix fatal bugs, use correct casts now.

	* sysdeps/i386/fpu/bits/mathinline.h (isgreater, isgreaterequal,
	isless, islessequal, islessgreater, isunordered): Optimize a bit.

	* sysdeps/stub/ftruncate.c: Include missing header for prototype.
	* sysdeps/stub/getdents.c: Likewise.
	* sysdeps/stub/reboot.c: Likewise.
	* sysdeps/stub/swapon.c: Likewise.
	* sysdeps/stub/syscall.c: Likewise.
	* sysdeps/stub/ualarm.c: Likewise.
	* sysdeps/stub/usleep.c: Likewise.

	* sysdeps/unix/sysv/linux/if_index.c: Don't compile or use opensock
	if SIOGIFINDEX and SIOGIFNAME are not defined.

	* sysdeps/unix/sysv/linux/net/if.h: Add IFF_PORTSEL and IFF_AUTOMEDIA
	according to recent kernel changes.

1997-09-10 21:32  Klaus Espenlaub  <kespenla@student.informatik.uni-ulm.de>

	* Makeconfig: Use $(have-initfini) instead of $(elf) to figure out
	the installed name of the startup code.
	(common-generated): Add version.mk.
	* Makefile (distclean-1): Add glibcbug.
	* Makerules: Replace -lgcc by $(gnulib).
	* catgets/Makefile (generated): Add xmalloc.o.
	* csu/Makefile (generated): Replace align.h and end.h by defs.h to
	match the generated file.
	* manual/Makefile (mostlyclean): Add stub-manual and stamp.o.
	(realclean): Changed to remove chapters-incl[12].
	* po/Makefile (realclean): New rule to remove the generated .mo files.
	* time/Makefile: Only include zonefile dependencies if $(no_deps) is
	not true to avoid make clean failure when directory time doesn't exist
	yet.
	(generated): Add tzselect.

	* stdio/fgets.c (fgets): Add casts to reduce gcc warning noise.
	* stdio/internals.c (flushbuf): Likewise.
	* stdio/linewrap.c (lwupdate): Likewise.
	* stdio/memstream.c (enlarge_buffer): Likewise.
	* stdio-common/vfscanf.c (_IO_vfscanf): Likewise.
	* time/tzset.c (compute_change): Likewise.
	* misc/init-misc.c (__init_misc): Only declare static if HAVE_GNU_LD
	is defined.
	* sysdeps/posix/pipestream.c (FUNC): Change to generate ANSI C style
	functions.
	* sysdeps/stub/init-posix.c: Likewise.
	* sysdeps/stub/profil.c: Likewise.
	* munch-tmpl.c (__libc_init): Convert to ANSI C style declaration to
	reduce gcc warning noise.
	* stdio/glue.c (_filbuf, _flsbuf): Likewise.
	* stdio/obstream.c (grow, seek, input, init_obstream): Likewise.
	* stdio/vasprintf.c (enlarge_buffer): Likewise.
	* sysdeps/generic/sysd-stdio.c (__stdio_read, __stdio_write,
	__stdio_seek, __stdio_close, __stdio_fileno, __stdio_open,
	__stdio_reopen): Likewise.
	* sysdeps/posix/defs.c (_cleanup): Likewise.
	* time/offtime.c (__offtime): Add cast.

	* posix/getopt.c: Don't use text_set_element if not defined.

	* configure.in: Provide a check for underscores before user labels
	that works even when the compiler used for building doesn't work
	(like when there is no C library).  Use the old way if the compiler
	works.

1997-09-10 05:08  David S. Miller  <davem@caip.rutgers.edu>

	* sysdeps/unix/sysv/linux/sparc/bits/ioctls.h: The TC* ioctls use
	'T' not 't' on SparcLinux.
	* sysdeps/unix/sysv/linux/sparc/bits/termios.h: tcflag_t is 32 bits.

	* sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S: Add aliases for
	_longjmp and siglongjmp.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/stdio.h: Add format attributes to the extra printf and
	scanf like functions.
	* stdio/stdio.h: Likewise.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* nis/nss_nisplus/nisplus-network.c (_nss_nisplus_getnetbyaddr_r):
	Print tablename_val, not tablename_len.

	* nis/nss_nisplus/nisplus-ethers.c (_nss_nisplus_getntohost_r):
	Use sprintf instead of sprintf, the string always fits.
	* nis/nss_nisplus/nisplus-hosts.c (_nss_nisplus_gethostbyaddr_r):
	Likewise.
	* nis/nss_nisplus/nisplus-network.c (_nss_nisplus_getnetbyaddr_r):
	Likewise.
	* nis/nss_nisplus/nisplus-proto.c
	(_nss_nisplus_getprotobynumber_r): Likewise.
	* nis/nss_nisplus/nisplus-rpc.c (_nss_nisplus_getrpcbynumber_r):
	Likewise.
	* nis/nss_nisplus/nisplus-service.c
	(_nss_nisplus_getservbynumber_r): Likewise.

	* nis/nss_nisplus/nisplus-alias.c (_nss_create_tablename): Use
	__stpcpy, __stpncpy and __strdup instead of public names.
	* nis/nss_nisplus/nisplus-ethers.c (_nss_create_tablename):
	Likewise.
	* nis/nss_nisplus/nisplus-grp.c (_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-hosts.c (_nss_create_tablename):
	Likewise.
	* nis/nss_nisplus/nisplus-netgrp.c (_nss_nisplus_parse_netgroup):
	Likewise.
	* nis/nss_nisplus/nisplus-network.c (_nss_nisplus_parse_netent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-proto.c (_nss_nisplus_parse_protoent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-pwd.c (_nss_create_tablename):
	Likewise.
	* nis/nss_nisplus/nisplus-rpc.c (_nss_nisplus_parse_rpcent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-service.c (_nss_nisplus_parse_servent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-spwd.c (_nss_create_tablename):
	Likewise.

	* libc.map: Export __stpcpy and __strdup.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* math/Makefile (CFLAGS-test-float.c, CFLAGS-test-double.c,
	CFLAGS-test-ldouble.c): Pass -ffloat-store to avoid excessive
	precision.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* include/rpc/auth_des.h: New file.

1997-09-09  Paul Eggert  <eggert@twinsun.com>

	* time/mktime.c (__mktime_internal): Declare sec_requested even if
	!LEAP_SECONDS_POSSIBLE, since it's needed at the end when checking
	for time_t overflow.

1997-09-09 22:11  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/posix/getcwd.c: Correct test for too small buffer.
	Reported by Erik Troan <ewt@redhat.com>.

	* elf/dl-close.c: Include <bits/libc-lock.h>, not <libc-lock.h>.
	* elf/dl-open.c: Likewise.

1997-09-07 17:09  Richard Henderson  <rth@cygnus.com>

	* sysdeps/alpha/Makefile: Kill setjmp_aux.
	* sysdeps/alpha/bits/setjmp.h: Rewrite in terms of an array.
	* sysdeps/alpha/__longjmp.c: Remove.
	* sysdeps/alpha/setjmp_aux.c: Remove.
	* sysdeps/alpha/__longjmp.S: New file.
	* sysdeps/alpha/bsd-_setjmp.S: Stub out.
	* sysdeps/alpha/bsd-setjmp.S: Likewise.
	* sysdeps/alpha/setjmp.S: Do the work; don't call __setjmp_aux.
	Move _setjmp and setjmp from bsd-*.S.

1997-09-06  20:20  Ulrich Drepper  <drepper@cygnus.com>

	* include/rpc/auth.h: New file.
	* include/rpc/auth_unix.h: New file.

1997-09-06  Paul Eggert  <eggert@twinsun.com>

	Fix gmtime so that it reports leap seconds when TZ
	indicates that leap seconds are desired.

	* time/gmtime.c (<stddef.h>): Remove unnecessary include.
	(gmtime): Put after gmtime_r, to help the compiler inline.
	(__tz_convert): New decl.
	(gmtime_r): Use __tz_convert instead of __offtime,
	so that leap seconds are handled correctly.

	* time/localtime.c (<errno.h>, <libc-lock.h>): Remove includes that
	are now unnecessary.
	(__tzset_internal, __tz_compute, __tzfile_compute, __use_tzfile,
	__tzset_lock): Remove extern decls that are now unnecessary.
	(localtime_internal): Moved to __tz_convert in tzset.c.
	so that localtime and gmtime can both use it easily.
	(localtime): Put after localtime_r, to help the compiler inline.
	(localtime_r): Use __tz_convert instead of localtime_internal.

	* time/strftime.c (__tz_compute): Remove unused (and now incorrect)
	decl.

	* time/tzfile.c (__tzfile_compute): New arg USE_LOCALTIME.

	* time/tzset.c (<errno.h>): Include.
	(_tmbuf): New decl.
	(__tzfile_compute): New function.
	(tz_compute): Renamed from __tz_compute.  No longer extern.
	Remove redundant call to tzset_internal.
	(tzset_internal): Renamed from __tzset_internal.  No longer extern.
	(tzset_lock): Renamed from __tzset_lock.  No longer extern.
	(__tz_convert): New function, containing functionality of old
	localtime_internal function, plus locking and optional UTC.

1997-09-06  Paul Eggert  <eggert@twinsun.com>

	* time/tzfile.c (__tzfile_read): Don't read a file if TZ is the empty
	string, just use UTC without leap seconds.  This is for compatibility
	with the Olson code.

1997-09-06  Paul Eggert  <eggert@twinsun.com>

	* time/tzset.c (__tzname_max): Lock tz data structures before
	invoking tzset_internal.

	* time/tzfile.c: Define compute_tzname_max statically.

1997-09-07 10:57  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/nis_call.c: Remove not longer necessary HAVE_SECURE_RPC ifdefs.
	* nis/nis_intern.h: Likewise.
	* nis/nss_nis/nis-publickey.c: Likewise.
	* nis/nss_nisplus/nisplus-publickey.c: Likewise.
	* nis/ypclnt.c: Likewise.

	* sunrpc/auth_des.c: Don't dereference NULL pointer,
	initialize ad->ad_timediff.

	* sunrpc/auth_none.c: Don't define our own prototypes, use the one
	from the header files.
	* sunrpc/auth_unix.c: Likewise.
	* sunrpc/clnt_raw.c: Likewise.
	* sunrpc/clnt_tcp.c: Likewise.
	* sunrpc/rpc_cmsg.c: Likewise.

	* sunrpc/key_call.c: Fix signal handling.

	* sunrpc/openchild.c: Don't use /bin/sh to start /usr/etc/keyenvoy,
	or we will get a deadlock with NIS+.

	* sunrpc/rpc/auth.h: Add prototype for xdr_opaque_auth, don't define
	HAVE_SECURE_RPC.

1997-09-07 15:51  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/i386/bits/select.h [__GNUC__] (__FD_ZERO, __FD_SET, __FD_CLR,
	__FD_ISSET): Use correct casts to address array correctly.
	Reported by urbanw@cs.umu.se.

1997-09-07 05:07  Ulrich Drepper  <drepper@cygnus.com>

	* elf/dl-close.c: Include <bits/libc-lock.h>, not <libc-lock.h>.
	* elf/dl-open.c: Likewise.
	* sysdeps/i386/memset.c: Undefine memset in case the header with the
	optimized functions is included.
	Patches by NIIBE Yutaka <gniibe@mri.co.jp>.

	* sysdeps/i386/bits/string.h [__PIC__] (strcspn, strspn, strpbrk,
	strsep): Use register for second parameter.
	* sysdeps/i386/i486/bits/string.h: Likewise.
	Reported by NIIBE Yutaka <gniibe@mri.co.jp>.

1997-09-03 09:48  Geoff Keating  <geoffk@ozemail.com.au>

	* math/libm-test.c: Change various tolerances to match what the
	tested routines can actually provide.

	* math/Makefile: Add new tests.
	* math/atest-sincos.c: New file.
	* math/atest-exp.c: New file.

	* csu/Makefile: Give initfini.s and initfiniS.s their own
	CFLAGS-* macros so they can be overridden.
	* sysdeps/powerpc/Makefile [subdir=csu]: Override flags for
	initfiniS.s to use -fpic instead of -fPIC, because the sed script
	breaks otherwise.

	* sysdeps/powerpc/Makefile [build-shared]: Use -fpic not -fPIC for
	efficiency.

	* sysdeps/powerpc/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
	Don't use register 0, to let _mcount be in a shared object.

	* sysdeps/powerpc/dl-machine.h: Use full sentences in comments.
	Generally clean up.  Suppress some code we don't need when relocating
	ld.so.
	* sysdeps/powerpc/test-arith.c: Change loop indices to size_t when
	appropriate to suppress gcc warning.
	* resolv/res_send.c: Suppress warning.
	* sunrpc/xdr_sizeof.c: Suppress warning.

	* FAQ: Add ppc-linux.
	* manual/maint.texi: Add ppc-linux.  Explain that gcc can't build it
	yet.

	* sysdeps/unix/sysv/linux/powerpc/profil-counter.h: Correct for
	current kernels.

1997-08-15 07:45  Geoff Keating  <geoffk@ozemail.com.au>

	* stdlib/fmtmsg.c: Use two parameters for __libc_once_define.
	* sysdeps/i386/machine-gmon.h: Correct typo.

	* sysdeps/unix/sysv/linux/powerpc/bits/mman.h: Change to match
	kernel.

	* sysdeps/generic/dl-sysdep.c: Add hook for bizzare PPC argument hack.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Rewrite to use
	sysdeps/linux/dl-sysdep.c.

	* sysdeps/powerpc/Makefile [subdir=gmon]: Compile ppc-mcount.
	* sysdeps/powerpc/machine-gmon.h: Use ppc-mcount.
	* sysdeps/powerpc/ppc-mcount: New file.

	The following are mostly changes to allow profiling:
	* sysdeps/powerpc/add_n.S: Added.
	* sysdeps/powerpc/add_n.s: Removed.
	* sysdeps/powerpc/addmul_1.S: Added.
	* sysdeps/powerpc/addmul_1.s: Removed.
	* sysdeps/powerpc/bsd-_setjmp.S: Use JUMPTARGET macro.
	* sysdeps/powerpc/bsd-setjmp.S: Use JUMPTARGET macro.
	* sysdeps/powerpc/lshift.S: Added.
	* sysdeps/powerpc/lshift.s: Removed.
	* sysdeps/powerpc/memset.S: Added.
	* sysdeps/powerpc/memset.s: Removed.
	* sysdeps/powerpc/mul_1.S: Added.
	* sysdeps/powerpc/mul_1.s: Removed.
	* sysdeps/powerpc/rshift.S: Added.
	* sysdeps/powerpc/rshift.s: Removed.
	* sysdeps/powerpc/s_copysign.S: Use ENTRY, END, weak_alias macros.
	* sysdeps/powerpc/s_fabs.S: Use ENTRY, END, weak_alias macros.
	* sysdeps/powerpc/setjmp.S: Use JUMPTARGET macro.
	* sysdeps/powerpc/strchr.S: Added.
	* sysdeps/powerpc/strchr.s: Removed.
	* sysdeps/powerpc/strcmp.S: Added.
	* sysdeps/powerpc/strcmp.s: Removed.
	* sysdeps/powerpc/strlen.S: Added.
	* sysdeps/powerpc/strlen.s: Removed.
	* sysdeps/powerpc/sub_n.S: Added.
	* sysdeps/powerpc/sub_n.s: Removed.
	* sysdeps/powerpc/submul_1.S: Added.
	* sysdeps/powerpc/submul_1.s: Removed.
	* sysdeps/unix/sysv/linux/powerpc/_exit.S: Removed.
	* sysdeps/unix/sysv/linux/powerpc/brk.S: Added.
	* sysdeps/unix/sysv/linux/powerpc/brk.c: Removed.
	* sysdeps/unix/sysv/linux/powerpc/clone.S: Use new macros. Fix
	various bugs. Document that it isn't tested.
	* sysdeps/unix/sysv/linux/powerpc/sigreturn.S: Make look like
	sysdeps/unix/_exit.S.
	* sysdeps/unix/sysv/linux/powerpc/socket.S: Use new macros.
	* sysdeps/unix/sysv/linux/powerpc/syscall.S: Use new macros.
	* sysdeps/unix/sysv/linux/powerpc/sysdep.h: Define some new macros
	to make assembler (possibly) more portable, allow profiling, etc.

1 files changed, 133 insertions, 34 deletions

diff --git a/elf/dl-profile.c b/elf/dl-profile.c
index c8028a7..9b020e8 100644
--- a/elf/dl-profile.c
+++ b/elf/dl-profile.c
@@ -2,6 +2,7 @@
    Copyright (C) 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+   Based on the BSD mcount implementation.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -30,6 +31,7 @@
 #include <sys/gmon_out.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
+#include <atomicity.h>
 
 /* The LD_PROFILE feature has to be implemented different to the
    normal profiling using the gmon/ functions.  The problem is that an
@@ -146,19 +148,19 @@ static long int state;
 static volatile uint16_t *kcount;
 static size_t kcountsize;
 
-struct here_tostruct
+struct here_fromstruct
   {
     struct here_cg_arc_record volatile *here;
     uint16_t link;
   };
 
-static uint16_t *froms;
-static size_t fromssize;
-
-static struct here_tostruct *tos;
+static uint16_t *tos;
 static size_t tossize;
-static size_t tolimit;
-static size_t toidx;
+
+static struct here_fromstruct *froms;
+static size_t fromssize;
+static size_t fromlimit;
+static size_t fromidx;
 
 static uintptr_t lowpc;
 static uintptr_t highpc;
@@ -170,6 +172,11 @@ static unsigned int log_hashfraction;
 static struct gmon_hdr *addr;
 static off_t expected_size;
 
+/* See profil(2) where this is described.  */
+static int s_scale;
+#define SCALE_1_TO_1	0x10000L
+
+
 
 /* Set up profiling data to profile object desribed by MAP.  The output
    file is found (or created) in OUTPUT_DIR.  */
@@ -184,7 +191,7 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
   ElfW(Addr) mapend = 0;
   struct gmon_hdr gmon_hdr;
   struct gmon_hist_hdr hist_hdr;
-  char *hist;
+  char *hist, *cp;
   size_t idx;
 
   /* Compute the size of the sections which contain program code.  */
@@ -205,9 +212,9 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
      with the same formulars as in `monstartup' (see gmon.c).  */
   state = GMON_PROF_OFF;
   lowpc = ROUNDDOWN (mapstart + map->l_addr,
-		     HISTFRACTION * sizeof(HISTCOUNTER));
+		     HISTFRACTION * sizeof (HISTCOUNTER));
   highpc = ROUNDUP (mapend + map->l_addr,
-		    HISTFRACTION * sizeof(HISTCOUNTER));
+		    HISTFRACTION * sizeof (HISTCOUNTER));
   textsize = highpc - lowpc;
   kcountsize = textsize / HISTFRACTION;
   hashfraction = HASHFRACTION;
@@ -217,17 +224,17 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
     log_hashfraction = __builtin_ffs (hashfraction * sizeof (*froms)) - 1;
   else
     log_hashfraction = -1;
-  fromssize = textsize / HASHFRACTION;
-  tolimit = textsize * ARCDENSITY / 100;
-  if (tolimit < MINARCS)
-    tolimit = MINARCS;
-  if (tolimit > MAXARCS)
-    tolimit = MAXARCS;
-  tossize = tolimit * sizeof (struct here_tostruct);
+  tossize = textsize / HASHFRACTION;
+  fromlimit = textsize * ARCDENSITY / 100;
+  if (fromlimit < MINARCS)
+    fromlimit = MINARCS;
+  if (fromlimit > MAXARCS)
+    fromlimit = MAXARCS;
+  fromssize = fromlimit * sizeof (struct here_fromstruct);
 
   expected_size = (sizeof (struct gmon_hdr)
 		   + 4 + sizeof (struct gmon_hist_hdr) + kcountsize
-		   + 4 + 4 + tossize * sizeof (struct here_cg_arc_record));
+		   + 4 + 4 + fromssize * sizeof (struct here_cg_arc_record));
 
   /* Create the gmon_hdr we expect or write.  */
   memset (&gmon_hdr, '\0', sizeof (struct gmon_hdr));
@@ -247,9 +254,9 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
      soname (or the file name) and the ending ".profile".  */
   filename = (char *) alloca (strlen (output_dir) + 1 + strlen (_dl_profile)
 			      + sizeof ".profile");
-  __stpcpy (__stpcpy (__stpcpy (__stpcpy (filename, output_dir), "/"),
-		      _dl_profile),
-	    ".profile");
+  cp = __stpcpy (filename, output_dir);
+  *cp++ = '/';
+  __stpcpy (__stpcpy (cp, _dl_profile), ".profile");
 
   fd = __open (filename, O_RDWR | O_CREAT, 0666);
   if (fd == -1)
@@ -356,7 +363,7 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
     }
 
   /* Allocate memory for the froms data and the pointer to the tos records.  */
-  froms = (uint16_t *) calloc (fromssize + tossize, 1);
+  tos = (uint16_t *) calloc (tossize + fromssize, 1);
   if (froms == NULL)
     {
       __munmap ((void *) addr, expected_size);
@@ -364,8 +371,8 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
       /* NOTREACHED */
     }
 
-  tos = (struct here_tostruct *) ((char *) froms + fromssize);
-  toidx = 0;
+  froms = (struct here_fromstruct *) ((char *) tos + tossize);
+  fromidx = 0;
 
   /* Now we have to process all the arc count entries.  BTW: it is
      not critical whether the *NARCSP value changes meanwhile.  Before
@@ -376,17 +383,26 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
      frequently used entries at the front of the list.  */
   for (idx = narcs = *narcsp; idx > 0; )
     {
-      size_t from_index;
-      size_t newtoidx;
+      size_t to_index;
+      size_t newfromidx;
       --idx;
-      from_index = ((data[idx].from_pc - lowpc)
-		    / (hashfraction * sizeof (*froms)));
-      newtoidx = toidx++;
-      tos[newtoidx].here = &data[idx];
-      tos[newtoidx].link = froms[from_index];
-      froms[from_index] = newtoidx;
+      to_index = ((data[idx].self_pc - lowpc)
+		  / (hashfraction * sizeof (*tos)));
+      newfromidx = fromidx++;
+      froms[newfromidx].here = &data[idx];
+      froms[newfromidx].link = tos[to_index];
+      tos[to_index] = newfromidx;
     }
 
+  /* Setup counting data.  */
+  if (kcountsize < highpc - lowpc)
+    s_scale = ((double) kcountsize / (highpc - lowpc)) * SCALE_1_TO_1;
+  else
+    s_scale = SCALE_1_TO_1;
+
+  /* Start the profiler.  */
+  __profil ((void *) kcount, kcountsize, lowpc, s_scale);
+
   /* Turn on profiling.  */
   state = GMON_PROF_ON;
 }
@@ -395,9 +411,12 @@ _dl_start_profile (struct link_map *map, const char *output_dir)
 void
 _dl_mcount (ElfW(Addr) frompc, ElfW(Addr) selfpc)
 {
-  if (state != GMON_PROF_ON)
+  uint16_t *topcindex;
+  size_t i, fromindex;
+  struct here_fromstruct *fromp;
+
+  if (! compare_and_swap (&state, GMON_PROF_ON, GMON_PROF_BUSY))
     return;
-  state = GMON_PROF_BUSY;
 
   /* Compute relative addresses.  The shared object can be loaded at
      any address.  The value of frompc could be anything.  We cannot
@@ -411,6 +430,86 @@ _dl_mcount (ElfW(Addr) frompc, ElfW(Addr) selfpc)
   if (selfpc >= textsize)
     goto done;
 
+  /* Getting here we now have to find out whether the location was
+     already used.  If yes we are lucky and only have to increment a
+     counter (this also has to be atomic).  If the entry is new things
+     are getting complicated...  */
+
+  /* Avoid integer divide if possible.  */
+  if ((HASHFRACTION & (HASHFRACTION - 1)) == 0)
+    i = selfpc >> log_hashfraction;
+  else
+    i = selfpc / (hashfraction * sizeof (*tos));
+
+  topcindex = &tos[i];
+  fromindex = *topcindex;
+
+  if (fromindex == 0)
+    goto check_new_or_add;
+
+  fromp = &froms[fromindex];
+
+  /* We have to look through the chain of arcs whether there is already
+     an entry for our arc.  */
+  while (fromp->here->from_pc == frompc)
+    {
+      if (fromp->link != 0)
+	do
+	  fromp = &froms[fromp->link];
+	while (fromp->link != 0 && fromp->here->from_pc != frompc);
+
+      if (fromp->link == 0)
+	{
+	  topcindex = &fromp->link;
+
+	check_new_or_add:
+	  /* Our entry is not among the entries we read so far from the
+	     data file.  Now see whether we have to update the list.  */
+	  while (narcs != *narcsp)
+	    {
+	      size_t to_index;
+	      size_t newfromidx;
+	      to_index = ((data[narcs].self_pc - lowpc)
+			  / (hashfraction * sizeof (*tos)));
+	      newfromidx = fromidx++;
+	      froms[newfromidx].here = &data[narcs];
+	      froms[newfromidx].link = tos[to_index];
+	      tos[to_index] = newfromidx;
+	      ++narcs;
+	    }
+
+	  /* If we still have no entry stop searching and insert.  */
+	  if (*topcindex == 0)
+	    {
+	      fromidx = 1 + exchange_and_add (narcsp, 1);
+	      ++narcs;
+
+	      /* In rare cases it could happen that all entries in FROMS are
+		 occupied.  So we cannot count this anymore.  */
+	      if (fromidx >= fromlimit)
+		goto done;
+
+	      *topcindex = fromindex;
+	      fromp = &froms[fromindex];
+
+	      fromp = &froms[fromp->link];
+
+	      fromp->link = 0;
+	      fromp->here->from_pc = frompc;
+	      fromp->here->count = 0;
+
+	      break;
+	    }
+
+	  fromp = &froms[*topcindex];
+	}
+      else
+	/* Found in.  */
+	break;
+    }
+
+  /* Increment the counter.  */
+  atomic_add (&fromp->here->count, 1);
 
  done:
   state = GMON_PROF_ON;