Commit Graph

43 Commits

Author SHA1 Message Date
Dag-Erling Smørgrav
261e614637 Use unions to avoid violating C99 strict aliasing rules. 2004-03-16 20:42:02 +00:00
David Schultz
36e22bed27 Fix some aliasing problems. 2004-02-16 10:02:40 +00:00
Jacques Vidrine
e4dc8baa84 Provide sysarch(2) prototypes in the MD sysarch.h headers. While I'm
at it, use the ANSI C generic pointer type for the second argument,
thus matching the documentation.

Remove the now extraneous (and now conflicting) function declarations
in various libc sources.  Remove now unnecessary casts.

Reviewed by:	bde
2004-01-09 16:52:09 +00:00
Jacques Vidrine
2d24bf11c8 Add required headers and function declarations. 2004-01-06 19:28:07 +00:00
Jeff Roberson
d1bbae0dfc - Use the magic for ___sigreturn in __sigset.
- In __sigreturn call sigprocmask() to restore our signal state rather than
   returning through sigreturn().  jmp to ___sigreturn to restore our register
   state following this.

Requested by:	pete
2003-11-14 03:21:22 +00:00
Daniel Eischen
df2edfa20a Add signalcontext() which will be needed by libpthread.
Reviewed by:	marcel
2003-08-09 05:37:54 +00:00
Marcel Moolenaar
2cd199ce21 Only allow trapframe formats instead of sigframe formats like the
comment says and don't write the first 3 arguments to FRAME_TRAPARG_*
as they are specific to sigframes.
2003-07-30 06:36:20 +00:00
Daniel Eischen
cd7be69206 Remove these from libc; they are now system calls.
Prompted by:	mini
2003-02-18 12:31:57 +00:00
Mike Barcroft
5d62092f94 o Implement C99 classification macros isfinite(), isinf(), isnan(),
isnormal().  The current isinf() and isnan() are perserved for
  binary compatibility with 5.0, but new programs will use the macros.
o Implement C99 comparison macros isgreater(), isgreaterequal(),
  isless(), islessequal(), islessgreater(), isunordered().

Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
2003-02-12 20:03:41 +00:00
Mike Barcroft
8cf5ed5125 Implement fpclassify():
o Add a MD header private to libc called _fpmath.h; this header
  contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
  contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
  storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
  double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
  HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
  <math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
  <machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
  on the size of its argument.  __fpclassifyl() is never called on
  alpha because (sizeof(long double) == sizeof(double)), which is good
  since __fpclassifyl() can't deal with such a small `long double'.

This was developed by David Schultz and myself with input from bde and
fenner.

PR:		23103
Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
		(significant portions)
Reviewed by:	bde, fenner (earlier versions)
2003-02-08 20:37:55 +00:00
David E. O'Brien
bd2d1003c1 Use __FBSDID. 2003-01-19 00:17:03 +00:00
Ruslan Ermilov
c51d717f0c libc_r wasn't so tied to libc for 22 months. 2002-11-18 09:50:57 +00:00
Daniel Eischen
9ed358fddc Disconnect the userland get/set/swapcontext() functions from
libc.  I want to keep these in some version for the thread
library/ies, but don't know whether to have them repo-copied
to libc_r or renamed and kept in libc.

Change the name of an alpha macro that was changed with the
system call commit.
2002-11-16 06:39:11 +00:00
Archie Cobbs
83999f5a32 Re-apply the previously backed-out commit that fixes the problem where
HUGE_VAL is not properly aligned on some architectures. The previous
fix now works because the two versions of 'math.h' (include/math.h
and lib/msun/src/math.h) have since been merged into one.

PR:	bin/43544
2002-10-31 23:05:20 +00:00
Archie Cobbs
ae8a4b2f36 Revert previous commit to unbreak world until we figure out the
right way to do it.
2002-09-20 15:43:26 +00:00
Archie Cobbs
f5f1272284 Fix a problem with the definition of HUGE_VAL causing the gcc warning
"cast increases required alignment of target type" on some platforms.

Reviewed by:	bde
2002-09-19 19:47:27 +00:00
David E. O'Brien
8fb3f3f682 Remove 'register' keyword. 2002-03-21 18:49:23 +00:00
Peter Wemm
cc2dbb21e5 Move swapcontext.c to the ${MACHINE_ARCH}/gen/Makefile.inc area, otherwise
it causes undefined references to getcontext() and setcontext() on
platforms other than i386 and alpha.
2002-03-21 06:45:32 +00:00
Daniel Eischen
b66b8326e5 Add getcontext, setcontext, makecontext, and swapcontext. These
functions are defined in SUSv2 and the latest POSIX spec.

Thanks to Bernd Walter <ticso@cicely8.cicely.de> for helping debug my
alpha assembly.

Approved by:	-arch
2002-01-10 02:40:59 +00:00
Daniel Eischen
8572518672 Save and restore t12 in the jmp_buf. t12 is used during function
calls.

This change allows libc_r to create thread contexts with a different
stack and return address.

With much detective work by: Bernd Walter <ticso@cicely.de>
2001-12-22 06:06:17 +00:00
David E. O'Brien
482a6000bb Fix vendor ID's. 2001-11-07 22:12:52 +00:00
Daniel Eischen
d201fe46e3 Remove _THREAD_SAFE and make libc thread-safe by default by
adding (weak definitions to) stubs for some of the pthread
functions.  If the threads library is linked in, the real
pthread functions will pulled in.

Use the following convention for system calls wrapped by the
threads library:
	__sys_foo - actual system call
	_foo - weak definition to __sys_foo
	foo - weak definition to __sys_foo

Change all libc uses of system calls wrapped by the threads
library from foo to _foo.  In order to define the prototypes
for _foo(), we introduce namespace.h and un-namespace.h
(suggested by bde).  All files that need to reference these
system calls, should include namespace.h before any standard
includes, then include un-namespace.h after the standard
includes and before any local includes.  <db.h> is an exception
and shouldn't be included in between namespace.h and
un-namespace.h  namespace.h will define foo to _foo, and
un-namespace.h will undefine foo.

Try to eliminate some of the recursive calls to MT-safe
functions in libc/stdio in preparation for adding a mutex
to FILE.  We have recursive mutexes, but would like to avoid
using them if possible.

Remove uneeded includes of <errno.h> from a few files.

Add $FreeBSD$ to a few files in order to pass commitprep.

Approved by:	-arch
2001-01-24 13:01:12 +00:00
John Baldwin
4f9d9dc272 Remove duplicate FreeBSD id tags. 2000-08-21 21:05:44 +00:00
Peter Wemm
13dfe2f092 Take a shot at implementing a functional rfork_thread() for alpha. This
was not fun and I am not entirely certain of the correctness, but it seems
to work.  (in fact, side by side testing of this code vs the x86 version
turned up hidden bugs in the x86 code).
2000-07-29 11:43:21 +00:00
John Baldwin
bde8875a06 Finish moving all IEEE fp types to be the same on all arch's. 2000-05-10 19:41:40 +00:00
David E. O'Brien
317e99beec Add FreeBSD Id tags. 2000-05-10 19:04:57 +00:00
David E. O'Brien
8d1d19d347 fp_except => fp_except_t for consistancy with the i386 and the tradition
C methoid of nameing types.
2000-05-10 19:00:45 +00:00
Jason Evans
bafd6b2f76 Remove unnecessary alternate entry points for *setjmp(). Make the main
entry point the standard name when not compiling libc_r (for example,
longjmp is the main entry point instead of __longjmp).

Suggested by:	bde
2000-01-20 21:58:27 +00:00
Jason Evans
1c12990b99 Make minor entry point changes to support libc_r. 2000-01-19 07:01:40 +00:00
Jason Evans
929273386f Add three-tier symbol naming in support of POSIX thread cancellation
points.  For library functions, the pattern is __sleep() <--
_libc_sleep() <-- sleep().  The arrows represent weak aliases.  For
system calls, the pattern is _read() <-- _libc_read() <-- read().
2000-01-12 09:23:48 +00:00
John Polstra
bdf5faebaf In longjmp, call sigreturn instead of osigreturn. The latter isn't
visible from userland any more.

Reviewed by:	luoqi
1999-10-14 01:16:51 +00:00
John Polstra
e05d1ffe18 Fix misspelling of the "addq" opcode. 1999-09-29 21:10:25 +00:00
Marcel Moolenaar
3cf3c5d9dd sigset_t change (part 5 of 5)
-----------------------------

Most of the userland changes are in libc. For both the alpha
and the i386 setjmp has been changed to accomodate for the
new sigset_t. Internally, libc is mostly rewritten to use the
new syscalls. The exception is in compat-43/sigcompat.c

The POSIX thread library has also been rewritten to use the
new sigset_t. Except, that it currently only handles NSIG
signals instead of the maximum _SIG_MAXSIG. This should not
be a problem because current applications don't use any
signals higher than NSIG.

There are version bumps for the following libraries:
  libdialog
  libreadline
  libc
  libc_r
  libedit
  libftpio
  libss

These libraries either a) have one of the modified structures
visible in the interface, or b) use sigset_t internally and
may cause breakage if new binaries are used against libraries
that don't have the sigset_t change. This not an immediate
issue, but will be as soon as applications start using the
new range to its fullest.

NOTE: libncurses already had an version bump and has not been
      given one now.

NOTE: doscmd is a real casualty and has been disconnected for
      the moment. Reconnection will eventually happen after
      doscmd has been fixed. I'm aware that being the last one
      to touch it, I'm automaticly promoted to being maintainer.
      According to good taste this means that I will receive a
      badge which either will be glued or mechanically stapled,
      drilled or otherwise violently forced onto me :-)

NOTE: pcvt/vttest cannot be compiled with -traditional. The
      change cause sys/types to be included along the way which
      contains the const and volatile modifiers. I don't consider
      this a solution, but more a workaround.
1999-09-29 15:18:46 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Doug Rabson
d4af94988c Declare the return address for __divX, __remX so that gdb can step over
calls properly.
1999-05-02 12:05:09 +00:00
Doug Rabson
b7f762137a Implement fpsetmask() and other fp*() functions. Programs should use
#include <ieeefp.h>

to access these functions instead of the i386 specific

	#include <machine/floatingpoint.h>

Submitted by: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
1998-12-23 11:50:52 +00:00
John Birrell
b6776b7488 CALL -> PCALL for sigaltstack for libc_r. 1998-12-10 20:36:24 +00:00
John Birrell
b4869285da Remove support for NetBSD syscalls. 1998-08-17 03:46:10 +00:00
John Birrell
dc43d96540 Allow for the fact that NetBSD syscalls are no longer the default. Call
sigaltstack by default if using FreeBSD syscalls.
1998-08-08 02:20:24 +00:00
John Birrell
920ee4896e Make NetBSD compatibility conditional on NETBSD_SYSCALLS being defined.
This is no longer the default.
1998-08-08 02:18:07 +00:00
John Birrell
0b0ae157f8 Rename calls when building libc_r. 1998-06-09 22:57:34 +00:00
John Birrell
4bf15af17e Remove a big hack after adding a small one to libc/gen/getcwd.c to
handle the lack of __getcwd syscall in NetBSD.
1998-05-15 12:01:06 +00:00
John Birrell
03fcbeae91 Import sources from NetBSD, tweaked for building in FreeBSD. 1998-03-09 06:34:43 +00:00