update from main archive 970226 cvs/libc-970301 cvs/libc-970228 cvs/libc-970227

1997-02-27 05:12  Ulrich Drepper  <drepper@cygnus.com>

	* manual/Makefile: Add rules to run and distribute xtract-typefun.
	* manual/xtract-typefun.awk: New file.  Script to extract function,
	variable, macro anchor to put into the `dir' file.
	* manual/signal.texi: Document difference between SysV and BSD
	signal(3) function and add documentation for sysv_signal.

	* sysdeps/libm-i387/e_acoshl.c: Clear upper half of word containing
	exponent before comparing.

1997-02-27 01:13  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/generic/netinet/in.h (htonl, htons, ntohl, ntohs): Change
	prototypes to use types with explicit width.  `unsigned long' is
	different on 64 bit systems.
	* sysdeps/unix/sysv/linux/netinet/in.h: Likewise.
	* sysdeps/generic/htonl.c: Likewise.
	* sysdeps/generic/htons.c: Likewise.
	* sysdeps/generic/ntohl.c: Likewise.
	* sysdeps/generic/ntohs.c: Likewise.
	Suggested by a sun <asun@zoology.washington.edu>.

1997-02-26 08:30  Andreas Jaeger  <aj@arthur.pfalz.de>

	* math/math.h: Include <__math.h> if __NO_MATH_INLINES is not
	defined and we want optimization.

1997-02-27 01:13  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/generic/netinet/in.h (htonl, htons, ntohl, ntohs): Change
	prototypes to use types with explicit width.  `unsigned long' is
	different on 64 bit systems.
	Suggested by a sun <asun@zoology.washington.edu>.

1997-02-02 19:53  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* misc/getpass.c: Don't disable canonical input.
	Reverted patch of Mon Jan  6 01:35:29 1997.

1996-12-14 22:07  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/libioP.h (_IO_finish_t): Take additional parameter, to
	match the hidden __in_chrg parameter of the destructor.
	(_IO_FINISH): Pass zero for it.
	* libio/genops.c (_IO_default_finish): Add second parameter, which
	is ignored.
	* libio/memstream.c (_IO_mem_finish): Likewise.
	* libio/fileops.c (_IO_mem_finish): Likewise.
	* libio/strops.c (_IO_str_finish): Likewise.  All callers changed.

1997-02-27 00:23  H.J. Lu  <hjl@lucon.org>

	* time/Makefile: Avoid using patterns in dependencies.

1997-02-26 00:56  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* elf/rtld.c: Make _dl_start static.  Otherwise the linker on the
	SPARC will convert the call _dl_start into a call into the PLT.

	* elf/rtld.c (_dl_start): On the SPARC we need to adjust the value
	of arg to make it point to the actual values.

	* sysdeps/sparc/elf/DEFS.h: New ELF specific version.
	* sysdeps/sparc/Dist: Mention sysdeps/sparc/elf/DEFS.h.

	* sysdeps/sparc/bsd-_setjmp.S, sysdeps/sparc/bsd-setjmp.S: Make
	them PIC aware.

	* sysdeps/sparc/dl-machine.h (elf_machine_load_address):
	Implemented.
	(elf_machine_rela): Make it compile; fix existing relocation
	types; add unhandled relocation types.
	(ELF_ADJUST_ARG): Get pointer to arguments at program startup.
	(RTLD_START): Initial implementation, not yet finished.

	* sysdeps/sparc/elf/start.S: Fix.

	* sysdeps/sparc/fpu_control.h: Remove duplicate declaration of
	__setfpucw.

	* sysdeps/sparc/divrem.m4: Make compilable under Linux.
	* sysdeps/sparc/rem.S, sysdeps/sparc/sdiv.S, sysdeps/sparc/udiv.S,
	sysdeps/sparc/urem.S : Regenerated.

	* sysdeps/sparc/setjmp.S: Make it PIC aware.

	* sysdeps/unix/sysv/linux/sparc/__sigtrampoline.S: Define
	__ASSEMBLY__ before using kernel header.

	* sysdeps/unix/sysv/linux/sparc/Makefile: Use -mv8 flag to compile
	rtld.c.

	* sysdeps/unix/sysv/linux/sparc/brk.c: Implement.
	* sysdeps/unix/sysv/linux/sparc/profil-counter.h: Remove code
	to handle old signals.
	* sysdeps/unix/sysv/linux/sparc/sigaction.c: Implements sigaction
	for all Linux/SPARC kernels.
	* sysdeps/unix/sysv/linux/sparc/syscall.S: Add code to store
	errno using __errno_location.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h: Add various handler
	macros for assembler sources.
	* sysdeps/unix/sysv/linux/sparc/errno.c: Define errno.

1997-02-25 16:02  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/rtld.c (dl_main): Remove dead code that is never executed.
	Rename local variable l to main_map where it is used to point to
	the load_map for the executable.

1997-02-25 15:03  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/dl-version.c (_dl_check_all_versions): Ignore libraries that
	could not be found.

1997-02-24 23:18  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makerules: Generate implicit object suffix rules automagically.
	(o-iterator): Move before first use.

	* Makeconfig (all-object-suffixes): Add .bo suffix.

1997-02-25 15:11  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-i387/e_acoshf.S (__ieee754_acoshf): Test correct
	word on stack for overflow.

	C++.  Use __exception instead.

3 files changed, 66 insertions, 1 deletions

diff --git a/manual/Makefile b/manual/Makefile
index 0f525be731..0e8ae85dc7 100644
--- a/manual/Makefile
+++ b/manual/Makefile
@@ -21,6 +21,9 @@
 subdir := manual
 export subdir := $(subdir)
 
+# We need GNU awk for the xtract-typefun script.
+GAWK = gawk
+
 .PHONY: all dvi info
 all: dvi info
 dvi: libc.dvi
@@ -60,6 +63,17 @@ stamp-summary: summary.awk $(chapters) $(chapters-incl)
 # touch is broken on our machines.  Sigh.
 	date > $@
 
+# Generate a file which can be added to the `dir' content to provide direct
+# access to the documentation of the function, variables, and other
+# definitions.
+dir-add.texi: manual/xtract-typefun.awk $(chapters-incl)
+	if test -n "$(chapters-incl)"; then \
+	  (for i in $(chapters-incl); do \
+	     $(GAWK) -f $< < $i; \
+	   done) | sort > $@.new; \
+	   ./move-if-change $@.new $@; \
+	fi
+
 # Generate Texinfo files from the C source for the example programs.
 %.c.texi: examples/%.c
 	sed -e 's,[{}],@&,g'				\
@@ -78,7 +92,8 @@ distribute = $(minimal-dist)	       					\
 	     $(patsubst examples/%.c,%.c.texi,$(filter examples/%.c,	\
 			$(minimal-dist)))				\
 	     libc.info* libc.?? libc.??s texinfo.tex summary.texi	\
-	     stamp-summary chapters chapters-incl
+	     stamp-summary chapters chapters-incl			\
+	     xtract-typefun.awk
 export distribute := $(distribute)
 
 tar-it = tar chovf $@ $^
diff --git a/manual/signal.texi b/manual/signal.texi
index 1a4f866876..767ddabb41 100644
--- a/manual/signal.texi
+++ b/manual/signal.texi
@@ -1040,6 +1040,18 @@ a handler for @code{SIGKILL} or @code{SIGSTOP}.
 @end table
 @end deftypefun
 
+@strong{Compatibility Note:} A problem when working with the
+@code{signal} function is that it has a different semantic on BSD and
+SVID system.  The difference is that on SVID systems the signal handler
+is deinstalled after an signal was delivered.  On BSD systems the
+handler must be explicitly deinstalled.  In the GNU C Library we use the
+BSD version by default.  To use the SVID version you can either use the
+function @code{sysv_signal} (see below) or use the @code{_XOPEN_SOURCE}
+feature select macro (@pxref{Feature Test Macros})  Generally it should
+be avoided to use this functions due to the compatibility problems.  It
+is better to use @code{sigaction} if it is available since the results
+are much more reliable.
+
 Here is a simple example of setting up a handler to delete temporary
 files when certain fatal signals happen:
 
@@ -1080,6 +1092,18 @@ example because these are designed to provide information for debugging
 (a core dump), and the temporary files may give useful information.
 
 @comment signal.h
+@comment GNU
+@deftypefun sighandler_t sysv_signal (int @var{signum}, sighandler_t @var{action})
+The @code{sysv_signal} implements the behaviour of the standard
+@code{signal} function as found on SVID systems.  The difference to BSD
+systems is that the handler is deinstalled after a delivery of a signal.
+
+@strong{Compatibility Note:} As said above for @code{signal}, this
+function should be avoided when possible.  @code{sigaction} is the
+preferred method.
+@end deftypefun
+
+@comment signal.h
 @comment SVID
 @deftypefun sighandler_t ssignal (int @var{signum}, sighandler_t @var{action})
 The @code{ssignal} function does the same thing as @code{signal}; it is
diff --git a/manual/xtract-typefun.awk b/manual/xtract-typefun.awk
new file mode 100644
index 0000000000..6450ac10eb
--- /dev/null
+++ b/manual/xtract-typefun.awk
@@ -0,0 +1,26 @@
+#! /usr/local/bin/gawk -f
+BEGIN {
+  last_node="";
+}
+
+/^@node/ {
+  last_node = gensub (/@node +([^@,]+).*/, "\\1", 1);
+}
+
+/^@deftypefun/ {
+  printf ("* %s: (libc)%s.\n",
+	  gensub (/@deftypefun +([^{ ]+|\{[^}]+\}) +([[:alpha:]_][[:alnum:]_]+).*/, "\\2", 1),
+    last_node);
+}
+
+/^@deftypevr/ {
+  printf ("* %s: (libc)%s.\n",
+	  gensub (/@deftypevr +([^{ ]+|\{[^}]+\}) +([^{ ]+|\{[^}]+\}) +([[:alpha:]_][[:alnum:]_]+).*/, "\\3", 1),
+    last_node);
+}
+
+/^@deftypefn/ {
+  printf ("* %s: (libc)%s.\n",
+	  gensub (/@deftypefn +([^{ ]+|\{[^}]+\}) +[^{ ]*(\{[^}]+\})? +([[:alpha:]_][[:alnum:]_]+).*/, "\\3", 1),
+    last_node);
+}