update from main archive 961005cvs/libc-971228cvs/libc-971222cvs/libc-971214cvs/libc-971208cvs/libc-971207cvs/libc-971204cvs/libc-971203cvs/libc-971201cvs/libc-971125cvs/libc-971124cvs/libc-971123cvs/libc-971122cvs/libc-971118cvs/libc-971117cvs/libc-971112cvs/libc-971111cvs/libc-971106cvs/libc-971105cvs/libc-971103cvs/libc-971031cvs/libc-971029cvs/libc-971026cvs/libc-971012cvs/libc-971011cvs/libc-970930cvs/libc-970926cvs/libc-970924cvs/libc-970920cvs/libc-970916cvs/libc-970915cvs/libc-970912cvs/libc-970911cvs/libc-970904cvs/libc-970829cvs/libc-961007cvs/libc-961006

Sun Oct  6 02:05:52 1996  Ulrich Drepper  <drepper@cygnus.com>

	* posix/getopt.c: Add casts to prevent warnings.
	* posix/regex.c: Likewise.

	* math/Makefile (long-m-routines, long-m-yes): Define to correct
	values to make `long double' functions available.
	(distribute): Add $(long-m-yes:=.c).

	* sysdeps/libm-i387/s_ceill.S: Correct loading of return value.
	Use long double instruction.

	* sysdeps/libm-ieee754/e_atanhl.c (huge): Correct constant.
	* sysdeps/libm-ieee754/e_asinhl.c: Likewise.
	* sysdeps/libm-ieee754/s_tanhl.c: Likewise.

	* sysdeps/libm-ieee754/e_coshl.c: New file.

	* sysdeps/libm-ieee754/s_asinh.c [!NO_LONG_DOUBLE]: Define names
	for `long double' version as alias.
	* sysdeps/libm-ieee754/s_atan.c: Likewise.
	* sysdeps/libm-ieee754/s_cbrt.c: Likewise.
	* sysdeps/libm-ieee754/s_ceil.c: Likewise.
	* sysdeps/libm-ieee754/s_copysign.c: Likewise.
	* sysdeps/libm-ieee754/s_cos.c: Likewise.
	* sysdeps/libm-ieee754/s_erf.c: Likewise.
	* sysdeps/libm-ieee754/s_expm1.c: Likewise.
	* sysdeps/libm-ieee754/s_fabs.c: Likewise.
	* sysdeps/libm-ieee754/s_finite.c: Likewise.
	* sysdeps/libm-ieee754/s_floor.c: Likewise.
	* sysdeps/libm-ieee754/s_frexp.c: Likewise.
	* sysdeps/libm-ieee754/s_ilogb.c: Likewise.
	* sysdeps/libm-ieee754/s_ldexp.c: Likewise.
	* sysdeps/libm-ieee754/s_log1p.c: Likewise.
	* sysdeps/libm-ieee754/s_logb.c: Likewise.
	* sysdeps/libm-ieee754/s_modf.c: Likewise.
	* sysdeps/libm-ieee754/s_nextafter.c: Likewise.
	* sysdeps/libm-ieee754/s_rint.c: Likewise.
	* sysdeps/libm-ieee754/s_scalbn.c: Likewise.
	* sysdeps/libm-ieee754/s_significand.c: Likewise.
	* sysdeps/libm-ieee754/s_sin.c: Likewise.
	* sysdeps/libm-ieee754/s_tan.c: Likewise.
	* sysdeps/libm-ieee754/s_tanh.c: Likewise.
	* sysdeps/libm-ieee754/w_acos.c: Likewise.
	* sysdeps/libm-ieee754/w_acosh.c: Likewise.
	* sysdeps/libm-ieee754/w_sin.c: Likewise.
	* sysdeps/libm-ieee754/w_atan2.c: Likewise.
	* sysdeps/libm-ieee754/w_atanh.c: Likewise.
	* sysdeps/libm-ieee754/w_cabs.c: Likewise.
	* sysdeps/libm-ieee754/w_cosh.c: Likewise.
	* sysdeps/libm-ieee754/w_drem.c: Likewise.
	* sysdeps/libm-ieee754/w_exp.c: Likewise.
	* sysdeps/libm-ieee754/w_fmod.c: Likewise.
	* sysdeps/libm-ieee754/w_gamma.c: Likewise.
	* sysdeps/libm-ieee754/w_gamma_r.c: Likewise.
	* sysdeps/libm-ieee754/w_hypot.c: Likewise.
	* sysdeps/libm-ieee754/w_j0.c: Likewise.
	* sysdeps/libm-ieee754/w_j1.c: Likewise.
	* sysdeps/libm-ieee754/w_jn.c: Likewise.
	* sysdeps/libm-ieee754/w_lgamma.c: Likewise.
	* sysdeps/libm-ieee754/w_lgamma_r.c: Likewise.
	* sysdeps/libm-ieee754/w_log.c: Likewise.
	* sysdeps/libm-ieee754/w_log10.c: Likewise.
	* sysdeps/libm-ieee754/w_pow.c: Likewise.
	* sysdeps/libm-ieee754/w_remainder.c: Likewise.
	* sysdeps/libm-ieee754/w_scalb.c: Likewise.
	* sysdeps/libm-ieee754/w_sinh.c: Likewise.
	* sysdeps/libm-ieee754/w_sqrt.c: Likewise.

	Stub files for missing long double math functions.
	* sysdeps/stub/e_acoshl.c: New file.
	* sysdeps/stub/e_hypotl.c: New file.
	* sysdeps/stub/e_j0l.c: New file.
	* sysdeps/stub/e_j1l.c: New file.
	* sysdeps/stub/e_jnl.c: New file.
	* sysdeps/stub/e_lgammal_r.c: New file.
	* sysdeps/stub/e_powl.c: New file.
	* sysdeps/stub/e_rem_pio2l.c: New file.
	* sysdeps/stub/e_sinhl.c: New file.
	* sysdeps/stub/k_cosl.c: New file.
	* sysdeps/stub/k_rem_pio2l.c: New file.
	* sysdeps/stub/k_sinl.c: New file.
	* sysdeps/stub/k_tanl.c: New file.
	* sysdeps/stub/s_erfl.c: New file.
	* sysdeps/stub/s_expm1l.c: New file.

	* sysdeps/i386/__longjmp.S: Use PSEUDO_END macro to provide
	.size directive.
	* sysdeps/i386/bsd-_setjmp.S: Likewise.
	* sysdeps/i386/bsd-setjmp.S: Likewise.
	* sysdeps/i386/memchr.S: Likewise.
	* sysdeps/i386/memcmp.S: Likewise.
	* sysdeps/i386/setjmp.S: Likewise.
	* sysdeps/i386/stpcpy.S: Likewise.
	* sysdeps/i386/stpncpy.S: Likewise.
	* sysdeps/i386/strchr.S: Likewise.
	* sysdeps/i386/strcspn.S: Likewise.
	* sysdeps/i386/strpbrk.S: Likewise.
	* sysdeps/i386/strrchr.S: Likewise.
	* sysdeps/i386/strspn.S: Likewise.
	* sysdeps/i386/strtok.S: Likewise.
	* sysdeps/i386/i486/strcat.S: Likewise.
	* sysdeps/i386/i486/strlen.S: Likewise.
	* sysdeps/i386/i586/memset.S: Likewise.
	* sysdeps/i386/i586/strchr.S: Likewise.
	* sysdeps/i386/i586/strlen.S: Likewise.
	* sysdeps/libm-i387/e_acos.S: Likewise.
	* sysdeps/libm-i387/e_acosl.S: Likewise.
	* sysdeps/libm-i387/e_asin.S: Likewise.
	* sysdeps/libm-i387/e_asinl.S: Likewise.
	* sysdeps/libm-i387/e_atan2.S: Likewise.
	* sysdeps/libm-i387/e_atan2l.S: Likewise.
	* sysdeps/libm-i387/e_exp.S: Likewise.
	* sysdeps/libm-i387/e_expl.S: Likewise.
	* sysdeps/libm-i387/e_fmod.S: Likewise.
	* sysdeps/libm-i387/e_fmodl.S: Likewise.
	* sysdeps/libm-i387/e_log.S: Likewise.
	* sysdeps/libm-i387/e_log10.S: Likewise.
	* sysdeps/libm-i387/e_log10l.S: Likewise.
	* sysdeps/libm-i387/e_logl.S: Likewise.
	* sysdeps/libm-i387/e_remainder.S: Likewise.
	* sysdeps/libm-i387/e_remainderf.S: Likewise.
	* sysdeps/libm-i387/e_remainderl.S: Likewise.
	* sysdeps/libm-i387/e_scalb.S: Likewise.
	* sysdeps/libm-i387/e_scalbl.S: Likewise.
	* sysdeps/libm-i387/e_sqrt.S: Likewise.
	* sysdeps/libm-i387/e_sqrtf.S: Likewise.
	* sysdeps/libm-i387/e_sqrtl.S: Likewise.
	* sysdeps/libm-i387/s_atan.S: Likewise.
	* sysdeps/libm-i387/s_atanf.S: Likewise.
	* sysdeps/libm-i387/s_atanl.S: Likewise.
	* sysdeps/libm-i387/s_ceil.S: Likewise.
	* sysdeps/libm-i387/s_ceilf.S: Likewise.
	* sysdeps/libm-i387/s_ceill.S: Likewise.
	* sysdeps/libm-i387/s_copysign.S: Likewise.
	* sysdeps/libm-i387/s_copysignf.S: Likewise.
	* sysdeps/libm-i387/s_copysignl.S: Likewise.
	* sysdeps/libm-i387/s_cos.S: Likewise.
	* sysdeps/libm-i387/s_cosf.S: Likewise.
	* sysdeps/libm-i387/s_cosl.S: Likewise.
	* sysdeps/libm-i387/s_finite.S: Likewise.
	* sysdeps/libm-i387/s_finitef.S: Likewise.
	* sysdeps/libm-i387/s_finitel.S: Likewise.
	* sysdeps/libm-i387/s_floor.S: Likewise.
	* sysdeps/libm-i387/s_floorf.S: Likewise.
	* sysdeps/libm-i387/s_floorl.S: Likewise.
	* sysdeps/libm-i387/s_ilogb.S: Likewise.
	* sysdeps/libm-i387/s_ilogbf.S: Likewise.
	* sysdeps/libm-i387/s_ilogbl.S: Likewise.
	* sysdeps/libm-i387/s_log1p.S: Likewise.
	* sysdeps/libm-i387/s_log1pf.S: Likewise.
	* sysdeps/libm-i387/s_log1pl.S: Likewise.
	* sysdeps/libm-i387/s_logb.S: Likewise.
	* sysdeps/libm-i387/s_logbf.S: Likewise.
	* sysdeps/libm-i387/s_logbl.S: Likewise.
	* sysdeps/libm-i387/s_rint.S: Likewise.
	* sysdeps/libm-i387/s_rintf.S: Likewise.
	* sysdeps/libm-i387/s_rintl.S: Likewise.
	* sysdeps/libm-i387/s_scalbn.S: Likewise.
	* sysdeps/libm-i387/s_scalbnf.S: Likewise.
	* sysdeps/libm-i387/s_scalbnl.S: Likewise.
	* sysdeps/libm-i387/s_significand.S: Likewise.
	* sysdeps/libm-i387/s_significandf.S: Likewise.
	* sysdeps/libm-i387/s_significandl.S: Likewise.
	* sysdeps/libm-i387/s_sin.S: Likewise.
	* sysdeps/libm-i387/s_sinf.S: Likewise.
	* sysdeps/libm-i387/s_sinl.S: Likewise.
	* sysdeps/libm-i387/s_tan.S: Likewise.
	* sysdeps/libm-i387/s_tanf.S: Likewise.
	* sysdeps/libm-i387/s_tanl.S: Likewise.

	* sysdeps/unix/sysv/linux/i386/clone.S: Add .size directive.
	* sysdeps/unix/sysv/linux/i386/mmap.S. Likewise.
	* sysdeps/unix/sysv/linux/i386/socket.S. Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.S. More compact .size line.

	* sysdeps/i386/sysdep.h (ASM_SIZE_DIRECTIVE): New macro.  Used
	to provide .size directive on ELF systems.

	* sysdeps/unix/sysv/linux/i386/profil-counter.h: Include
	<sigcontext.h> and rename parameter type to sigcontext.
	* sysdeps/unix/sysv/linux/i386/sigcontext.h New file.

	* sysdeps/unix/sysv/linux/i386/syscall.S: From Linux 2.1 on
	negative values might occur as positive results.  Test against
	-125 to decide for error or not.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise for system calls.

Thu Oct  3 21:07:58 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/dl-open.c: Use _DYNAMIC instead of _dl_start to decide
	whether this is a statically linked program.  The latter is now
	always defined.

Fri Oct  4 02:08:10 1996  Bang Jun-Young  <bangjy@nownuri.nowcom.co.kr>

	* po/ko.po: Update.

Fri Oct  4 02:07:46 1996  Michel Robitaille  <robitail@IRO.UMontreal.CA>

	* po/fr.po: New file.

Fri Oct  4 05:04:52 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/i386/sigcontext.h: New file.

	Add support for MD5 crypt replacement.
	* Makefile (subdirs): Add crypt.
	* shlib-versions: Add entry for libcrypt.
	* crypt/md5-crypt.c: New file.
	* crypt/md5.c: New file.
	* crypt/md5.h: New file.
	* sysdeps/generic/crypt-entry.c: New file.
	* sysdeps/generic/crypt.h: New file.

Thu Oct  3 20:53:23 1996  Andreas Jaeger  <aj@arthur.pfalz.de>

	* dirent/tst-seekdir.c: Provide correct prototypes.
	* io/test-utime.c: Likewise.
	* malloc/mallocbug.c: Likewise.
	* posix/testfnm.c: Likewise.
	* stdio-common/xbug.c: Likewise.
	* sysdeps/posix/cuserid.c: Likewise.

Wed Oct  2 13:33:48 1996  Richard Henderson  <rth@tamu.edu>

	Provide optimized string functions for Alpha processors.
	* sysdeps/alpha/bzero.S: New file.
	* sysdeps/alpha/memset.S: New file.
	* sysdeps/alpha/stpcpy.S: New file.
	* sysdeps/alpha/stpncpy.S: New file.
	* sysdeps/alpha/strcat.S: New file.
	* sysdeps/alpha/strchr.S: New file.
	* sysdeps/alpha/strcpy.S: New file.
	* sysdeps/alpha/strncat.S: New file.
	* sysdeps/alpha/strncpy.S: New file.
	* sysdeps/alpha/strrchr.S: New file.
	* sysdeps/alpha/stxcpy.S: New file.
	* sysdeps/alpha/stxncpy.S: New file.

	* sysdeps/alpha/Makefile [$(sudir)==string]: Add stxcpy and
	stxncpy to sysdep_routines.
	Minor correction.

Wed Oct  2 13:41:48 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/generic/strtok.c: Don't set stored pointer to NULL when
 	notheing is found.  This guarantees all subsequent calls behave
 	the same.
	* sysdeps/generic/strtok_r.c: Likewise.

Mon Sep 30 22:27:36 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/posix/tempname.c (__stdio_gen_tempname): Don't declare
	`i' as const.

Mon Sep 30 22:38:29 1996  Richard Henderson  <rth@tamu.edu>

	* sysdeps/generic/strtok.c: When we hit EOS, don't set olds to
	NULL immediately; we're going to get called one more time.
	* sysdeps/generic/strtok_r.c: Likewise.

Tue Oct  1 09:12:21 1996  Ulrich Drepper  <drepper@cygnus.com>

	* locale/programs/ld-time.c: Always write some bytes at the end of
 	the file even if no `era's are specified.

	* stdio-common/tmpname.c (tmpbuf): Don't define as array of
 	pointers.

Tue Oct  1 01:43:11 1996  Ulrich Drepper  <drepper@cygnus.com>

	* libio/iofclose.c: Move unlocking to right position.

Mon Sep 30 03:08:34 1996  Richard Henderson  <rth@tamu.edu>

	* misc/Makefile: Kill force-wrapper.
	* misc/force-wrapper.c: Delete.

	* elf/eval.c: Add <string.h>.

	* gmon/sys/gmon_out.h: Nonsense like `char foo[sizeof(char*)]'
	followed by `bcopy(&ptr, &foo, sizeof(foo))' helps portability
	and binary compatibility not at all.  Better to do `char *foo'
	followed by `foo = ptr' as it is much cleaner.
	(struct gmon_hdr): Fix version.
	(struct gmon_hist_hdr): Fix low_pc, high_pc, hist_size, prof_rate.
	(struct gmon_cg_arc_record): Fix from_pc, self_pc, count.
	* gmon/gmon.c: De-ansidecl-ify.
	(write_hist): De-bcopy-fy.
	(write_call_graph): Likewise.

	* gmon/mcount.c: Assume _MCOUNT_DECL does the entire declaration.
	* sysdeps/alpha/machine-gmon.h: Update _MCOUNT_DECL.
	* sysdeps/generic/machine-gmon.h: Likewise.

	* resolv/netdb.h: Add __set_h_errno to mimic __set_errno.
	* nss/getXXent_r.c: Use __set_h_errno to set h_errno in all funcs.
	* nss/nss_dns/dns-network.c: Likewise.
	* resolv/getunamaddr.c: Likewise.  Also use __set_errno where needed.
	* resolv/getnetnamadr.c: Likewise.
	* resolv/res_debug.c: Likewise.
	* resolv/res_mkquery.c: Likewise.
	* resolv/res_query.c: Likewise.

	* libio/clearerr_u.c: It's not necessary to define __ protected
	function so don't do it.
	* libio/feof_u.c, libio/ferror_u.c, libio/fputc_u.c,
	  libio/getc_u.c, libio/getchar_u.c, libio/iofflush_u.c: Likewise.

	* libio/fgetc.c: Avoid a warning by casting _IO_funlockfile for
	the cleanup registrar.
	* libio/fputc.c, libio/freopen.c, libio/fseek.c, libio/getc.c,
	  libio/getchar.c, libio/iofclose.c, libio/iofflush.c,
	  libio/iofgetpos.c, libio/iofgets.c, libio/iofputs.c,
	  libio/iofread.c, libio/iofsetpos.c, libio/ioftell.c,
	  libio/iofwrite.c, libio/iogetdelim.c, libio/iogets.c,
	  libio/ioputs.c, libio/iosetbuffer.c, libio/iosetvbuf.c,
	  libio/ioungetc.c, libio/putc.c, libio/putchar.c, libio/rewind.c:
	Likewise.

	* locale/programs/ld-ctype.c: Include <alloca.h>.

	* login/login_tty.c: Get login_tty prototype from <utmp.h>.

	* posix/sys/types.h: Change #defines to typedefs.  This is looking
	forward to more comprehensive namespace cleanups for C++.
	* posix/unistd.h: Likewise for ssize_t.

	* pwd/getpw.c: Prototype and rename getpw -> __getpw and add a
	weak alias.

	* resolv/base64.c: Don't do `for (NULL; ...)' as it causes
	`statement with no effect' warnings.
	* resolv/inet_neta.c: Include <string.h> for strlen.

	* stdio-common/getline.c: Undef ssize_t before libio redefinition.
	* stdio-common/tstgetln.c: Same.  De-ansidecl-ify.
	* stdio-common/vfprintf.c: Same for va_list.
	* stdio-common/vfscanf.c: Same.
	* stdio-common/reg-printf.c: Prototype the __ function.
	* stdio-common/scanf.c [USE_IN_LIBIO]: Include <libioP.h> for
	_IO_vscanf declaration.

	* string/tester.c: Tsk, tsk.  Don't cast pointers to int,
	but to unsigned long for the health of 64-bit systems.

	* sunrpc/svc_udp.c: Define MAX only if we don't have it yet.
	Many system's <sys/param.h> pulls this in.

	* sysdeps/generic/dl-cache.c: Kill the bottom half of the
	patch doubled file.

	* sysdeps/generic/pty.c (forkpty): Get login_tty decl from <utmp.h>
	instead of defining it locally.

	* sysdeps/posix/sigvec.c: Prototype wrapper_handler and convert_mask.
	* sysdeps/stub/chflags.c: Prototype chflags.
	* sysdeps/stub/fchflags.c: Prototype fchflags.
	* sysdeps/stub/sstk.c: Prototype sstk.

	* sysdeps/unix/alpha/sysdep.S:  Add strong alias from errno
	variable to __errno.  Update __syscall_error to store to both
	the global and per-thread variables.

	* sysdeps/unix/sysv/linux/init-first.c: Change include of
	init-first.h from "" to <> as "" does not search the include path.
	Prototype _dl_start.

Sun Sep 29 14:41:17 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/Makefile ($(common-objpfx)s-proto.d): Make it a
	pattern rule to get the right stem.

Sat Sep 28 01:30:06 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile ($(objpfx)version-info.h): Fix typo in previous change.

Sat Sep 28 00:44:38 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/posix/euidaccess.c (__set_errno): Fix typo.

Sat Sep 28 00:40:38 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* malloc/free.c (_free_internal): Don't call free recursively, use
	the internal functions instead.

Sat Sep 28 00:23:20 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/posix/tempname.c (__stdio_gen_tempname) [USE_IN_LIBIO &&
	_IO_MTSAFE_IO]: Allocate and initialize the file lock.

Fri Sep 27 23:58:17 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* catgets/gencat.c (main): Print version information on stdout,
	not stderr.
	* db/makedb.c: Likewise.
	* locale/programs/locale.c: Likewise.
	* locale/programs/localedef.c: Likewise.

Mon Sep 30 00:14:26 1996  Ulrich Drepper  <drepper@cygnus.com>

	Add implementation of netgroup.
	* inet/Makefile (distributes): Add netgroup.h.
	(routines): Add getnetgrent.c and getnetgrent_r.c.
	* inet/getnetgrent.c: New file.
	* inet/getnetgrent_r.c: New file.
	* inet/netgroup.h: New file.
	* netgroup.h: New file.
	* nsswitch.h: New file.
	* nss/Makefile (databases): Add getgrp.
	* nss/databases.def: Add netgroup.
	* nss/db-Makefile: Add rules for netgroup.
	* nss/netgrp-lookup.c: New file.
	* nss/nss.h: Add new status value NSS_STATUS_RETURN which will
	always return without a check of the transition table.
	* nss/nsswitch.h (struct service_user): Extend actions array to
	five elements.
	* nss/nsswitch.c (__nss_next): Allow NSS_STATUS_RETURN as legal
	status value.
	(nss_parse_service_list): Initialize action for NSS_STATUS_RETURN
	to NSS_ACTION_RETURN.
	* nss/nss_db/db-netgrp.c: New file.
	* nss/nss_files/files-netgrp.c: New file.
	* nss/nsswitch.conf: Add entry for netgroup.
	* resolv/netdb.h: Add prototypes for netgroup functions.

	* nss/nss_db/db-XXX.c: Use `enum nss_status' type when status
	value is used.

Sun Sep 29 12:55:58 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/syscalls.list: Change funciton name for
 	_llseek to _llseek (not llseek).
	Reported by Matthias Urlichs <smurf@smurf.noris.de>.

Sun Sep 29 05:34:32 1996  Ulrich Drepper  <drepper@cygnus.com>

	* inet/rcmd.c: Remove definition of MIN.

Sat Sep 28 14:22:51 1996  Ulrich Drepper  <drepper@cygnus.com>

	* dirent/readdir_r.c: Removed.  We indeed need a real implementation.
	* sysdeps/unix/readdir_r.c: New file.
	* sysdeps/unix/readdir.c: Remove check for correct parameter
	values.  Let them simply die.
	* manual/filesys.texi: Document readdir_r.

	* sysdeps/gnu/errlist.awk: Define _sys_errlist as `const char* const'.
	Proposed by Per Abrahamsen <abraham@dina.kvl.dk>.

1 files changed, 307 insertions, 0 deletions

diff --git a/sysdeps/alpha/stxcpy.S b/sysdeps/alpha/stxcpy.S
new file mode 100644
index 0000000000..e381b704cd
--- /dev/null
+++ b/sysdeps/alpha/stxcpy.S
@@ -0,0 +1,307 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu)
+
+This file is part of the GNU C Library.
+
+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
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/* Copy a null-terminated string from SRC to DST.
+
+   This is an internal routine used by strcpy, stpcpy, and strcat.
+   As such, it uses special linkage conventions to make implementation
+   of these public functions more efficient.
+
+   On input:
+	t9 = return address
+	a0 = DST
+	a1 = SRC
+
+   On output:
+	t8  = bitmask (with one bit set) indicating the last byte written
+	a0  = unaligned address of the last *word* written
+
+   Furthermore, v0, a3-a5, t11, and t12 are untouched.
+*/
+
+/* This is generally scheduled for the EV5, but should still be pretty 
+   good for the EV4 too.  */
+
+#include <sysdep.h>
+
+	.set noat
+	.set noreorder
+
+	.text
+
+/* There is a problem with either gdb (as of 4.16) or gas (as of 2.7) that
+   doesn't like putting the entry point for a procedure somewhere in the
+   middle of the procedure descriptor.  Work around this by putting the
+   aligned copy in its own procedure descriptor */
+
+	.ent stxcpy_aligned
+	.align 3
+stxcpy_aligned:
+	.frame sp, 0, t9
+	.prologue 0
+
+	/* On entry to this basic block:
+	   t0 == the first destination word for masking back in
+	   t1 == the first source word.  */
+
+	/* Create the 1st output word and detect 0's in the 1st input word.  */
+	lda	t2, -1		# e1    : build a mask against false zero
+	mskqh	t2, a1, t2	# e0    :   detection in the src word
+	mskqh	t1, a1, t3	# e0    :
+	ornot	t1, t2, t2	# .. e1 : 
+	mskql	t0, a1, t0	# e0    : assemble the first output word
+	cmpbge	zero, t2, t7	# .. e1 : bits set iff null found
+	or	t0, t3, t1	# e0    :
+	bne	t7, $a_eos	# .. e1 :
+
+	/* On entry to this basic block:
+	   t0 == the first destination word for masking back in
+	   t1 == a source word not containing a null.  */
+
+$a_loop:
+	stq_u	t1, 0(a0)	# e0    :
+	addq	a0, 8, a0	# .. e1 :
+	ldq_u	t1, 0(a1)	# e0    :
+	addq	a1, 8, a1	# .. e1 :
+	cmpbge	zero, t1, t7	# e0 (stall)
+	beq	t7, $a_loop	# .. e1 (zdb)
+
+	/* Take care of the final (partial) word store.
+	   On entry to this basic block we have:
+	   t1 == the source word containing the null
+	   t7 == the cmpbge mask that found it.  */
+$a_eos:
+	negq	t7, t6		# e0    : find low bit set
+	and	t7, t6, t8	# e1 (stall)
+
+	/* For the sake of the cache, don't read a destination word
+	   if we're not going to need it.  */
+	and	t8, 0x80, t6	# e0    :
+	bne	t6, 1f		# .. e1 (zdb)
+
+	/* We're doing a partial word store and so need to combine
+	   our source and original destination words.  */
+	ldq_u	t0, 0(a0)	# e0    :
+	subq	t8, 1, t6	# .. e1 : 
+	zapnot	t1, t6, t1	# e0    : clear src bytes >= null
+	or	t8, t6, t7	# .. e1 : 
+	zap	t0, t7, t0	# e0    : clear dst bytes <= null
+	or	t0, t1, t1	# e1    :
+
+1:	stq_u	t1, 0(a0)	# e0    :
+	ret	(t9)		# .. e1 :
+
+	.end stxcpy_aligned
+
+	.align 3
+	.ent __stxcpy
+	.globl __stxcpy
+__stxcpy:
+	.frame sp, 0, t9
+	.prologue 0
+
+	/* Are source and destination co-aligned?  */
+	xor	a0, a1, t0	# e0    :
+	unop			#       :
+	and	t0, 7, t0	# e0    :
+	bne	t0, $unaligned	# .. e1 :
+
+	/* We are co-aligned; take care of a partial first word.  */
+	ldq_u	t1, 0(a1)	# e0    : load first src word
+	and	a0, 7, t0	# .. e1 : take care not to load a word ...
+	addq	a1, 8, a1		# e0    :
+	beq	t0, stxcpy_aligned	# .. e1 : ... if we wont need it
+	ldq_u	t0, 0(a0)	# e0    :
+	br	stxcpy_aligned	# .. e1 :
+
+
+/* The source and destination are not co-aligned.  Align the destination
+   and cope.  We have to be very careful about not reading too much and
+   causing a SEGV.  */
+
+	.align 3
+$u_head:
+	/* We know just enough now to be able to assemble the first
+	   full source word.  We can still find a zero at the end of it
+	   that prevents us from outputting the whole thing.
+
+	   On entry to this basic block:
+	   t0 == the first dest word, for masking back in, if needed else 0
+	   t1 == the low bits of the first source word
+	   t6 == bytemask that is -1 in dest word bytes */
+
+	ldq_u	t2, 8(a1)	# e0    :
+	addq	a1, 8, a1	# .. e1 :
+
+	extql	t1, a1, t1	# e0    :
+	extqh	t2, a1, t4	# e0    :
+	mskql	t0, a0, t0	# e0    :
+	or	t1, t4, t1	# .. e1 :
+	mskqh	t1, a0, t1	# e0    :
+	or	t0, t1, t1	# e1    :
+	
+	or	t1, t6, t6	# e0    :
+	cmpbge	zero, t6, t7	# .. e1 :
+	lda	t6, -1		# e0    : for masking just below
+	bne	t7, $u_final	# .. e1 :
+
+	mskql	t6, a1, t6		# e0    : mask out the bits we have 
+	or	t6, t2, t2		# e1    :   already extracted before
+	cmpbge	zero, t2, t7		# e0    :   testing eos
+	bne	t7, $u_late_head_exit	# .. e1 (zdb)
+
+	/* Finally, we've got all the stupid leading edge cases taken care
+	   of and we can set up to enter the main loop.  */
+
+	stq_u	t1, 0(a0)	# e0    : store first output word
+	addq	a0, 8, a0	# .. e1 :
+	extql	t2, a1, t0	# e0    : position ho-bits of lo word
+	ldq_u	t2, 8(a1)	# .. e1 : read next high-order source word
+	addq	a1, 8, a1	# e0    :
+	cmpbge	zero, t2, t7	# .. e1 :
+	nop			# e0    :
+	bne	t7, $u_eos	# .. e1 :
+
+	/* Unaligned copy main loop.  In order to avoid reading too much,
+	   the loop is structured to detect zeros in aligned source words.
+	   This has, unfortunately, effectively pulled half of a loop 
+	   iteration out into the head and half into the tail, but it does
+	   prevent nastiness from accumulating in the very thing we want
+	   to run as fast as possible.
+
+	   On entry to this basic block:
+	   t0 == the shifted high-order bits from the previous source word
+	   t2 == the unshifted current source word
+
+	   We further know that t2 does not contain a null terminator.  */
+
+	.align 3
+$u_loop:
+	extqh	t2, a1, t1	# e0    : extract high bits for current word
+	addq	a1, 8, a1	# .. e1 :
+	extql	t2, a1, t3	# e0    : extract low bits for next time
+	addq	a0, 8, a0	# .. e1 :
+	or	t0, t1, t1	# e0    : current dst word now complete
+	ldq_u	t2, 0(a1)	# .. e1 : load high word for next time
+	stq_u	t1, -8(a0)	# e0    : save the current word
+	mov	t3, t0		# .. e1 :
+	cmpbge	zero, t2, t7	# e0    : test new word for eos
+	beq	t7, $u_loop	# .. e1 :
+
+	/* We've found a zero somewhere in the source word we just read.
+	   If it resides in the lower half, we have one (probably partial)
+	   word to write out, and if it resides in the upper half, we 
+	   have one full and one partial word left to write out.
+
+	   On entry to this basic block:
+	   t0 == the shifted high-order bits from the previous source word
+	   t2 == the unshifted current source word.  */
+$u_eos:
+	extqh	t2, a1, t1	# e0    :
+	or	t0, t1, t1	# e1    : first (partial) source word complete
+
+	cmpbge	zero, t1, t7	# e0    : is the null in this first bit?
+	bne	t7, $u_final	# .. e1 (zdb)
+
+$u_late_head_exit:
+	stq_u	t1, 0(a0)	# e0    : the null was in the high-order bits
+	addq	a0, 8, a0	# .. e1 :
+	extql	t2, a1, t1	# e0    :
+	cmpbge	zero, t1, t7	# .. e1 :
+
+	/* Take care of a final (probably partial) result word.
+	   On entry to this basic block:
+	   t1 == assembled source word
+	   t7 == cmpbge mask that found the null.  */
+$u_final:
+	negq	t7, t6		# e0    : isolate low bit set
+	and	t6, t7, t8	# e1    :
+
+	and	t8, 0x80, t6	# e0    : avoid dest word load if we can 
+	bne	t6, 1f		# .. e1 (zdb)
+
+	ldq_u	t0, 0(a0)	# e0    :
+	subq	t8, 1, t6	# .. e1 :
+	or	t6, t8, t7	# e0    :
+	zapnot	t1, t6, t1	# .. e1 : kill source bytes >= null
+	zap	t0, t7, t0	# e0    : kill dest bytes <= null
+	or	t0, t1, t1	# e1    :
+
+1:	stq_u	t1, 0(a0)	# e0    :
+	ret	(t9)		# .. e1 :
+
+	/* Unaligned copy entry point.  */
+	.align 3
+$unaligned:
+
+	ldq_u	t1, 0(a1)	# e0    : load first source word
+
+	and	a0, 7, t4	# .. e1 : find dest misalignment
+	and	a1, 7, t5	# e0    : find src misalignment
+
+	/* Conditionally load the first destination word and a bytemask 
+	   with 0xff indicating that the destination byte is sacrosanct.  */
+
+	mov	zero, t0	# .. e1 :
+	mov	zero, t6	# e0    :
+	beq	t4, 1f		# .. e1 :
+	ldq_u	t0, 0(a0)	# e0    :
+	lda	t6, -1		# .. e1 :
+	mskql	t6, a0, t6	# e0    :
+1:
+	subq	a1, t4, a1	# .. e1 : sub dest misalignment from src addr
+
+	/* If source misalignment is larger than dest misalignment, we need
+	   extra startup checks to avoid SEGV.  */
+
+	cmplt	t4, t5, t8	# e0    :
+	beq	t8, $u_head	# .. e1 (zdb)
+
+	lda	t2, -1		# e1    : mask out leading garbage in source
+	mskqh	t2, t5, t2	# e0    :
+	nop			# e0    :
+	ornot	t1, t2, t3	# .. e1 :
+	cmpbge	zero, t3, t7	# e0    : is there a zero?
+	beq	t7, $u_head	# .. e1 (zdb)
+
+	/* At this point we've found a zero in the first partial word of
+	   the source.  We need to isolate the valid source data and mask
+	   it into the original destination data.  (Incidentally, we know
+	   that we'll need at least one byte of that original dest word.) */
+
+	ldq_u	t0, 0(a0)	# e0    :
+
+	negq	t7, t6		# .. e1 : build bitmask of bytes <= zero
+	and	t6, t7, t8	# e0    :
+	nop			# .. e1 :
+	subq	t8, 1, t6	# e0    :
+	or	t6, t8, t7	# e1    :
+
+	zapnot	t2, t7, t2	# e0    : prepare source word; mirror changes
+	and	t1, t2, t1	# e1    : to source validity mask
+	extql	t2, a1, t2	# e0    :
+	extql	t1, a1, t1	# e0    :
+
+	andnot	t0, t2, t0	# e0    : zero place for source to reside
+	or	t0, t1, t1	# e1    : and put it there
+	stq_u	t1, 0(a0)	# e0    :
+	ret	(t9)		# .. e1 :
+
+	.end __stxcpy