Commit Graph

173 Commits

Author SHA1 Message Date
deischen
e1f74be694 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
jhb
1dc519633c Use 'mov' instead of 'lea' for setting the syscall number in %eax as that
is clearer about what we are actually doing.

Requested by:	bde
2001-11-27 20:51:26 +00:00
jhb
28f45ce3d0 Cleanups after previous change:
- Renumber labels since the previous revision removed one.
- Remove useless and wrong comment.
  - Repeating the function name is just redundant.
  - The previous revision made the comment about %edx useless.
  - The comment about %eax was wrong (but did explain why %eax used to be
    fixed up).

Submitted by:	bde
2001-11-13 16:58:43 +00:00
jhb
a2b7af5b3c The kernel already fixes up %eax for parents that return from fork, so
don't bother manually fixing up %eax for the parent process by testing
the value in %edx and zeroing and already zeroed %eax.
2001-11-13 06:36:43 +00:00
peter
314a1d3362 De-orbit DEFS.h - the other arches do not use it, and it got replaced
with <machine/asm.h>.

Reviewed by:	bde
2001-10-24 20:29:14 +00:00
ru
77fafc4065 Just use RSYSCALL. 2001-10-19 13:32:24 +00:00
ru
623da62a5a mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
ru
69224c0edd Use ``.Rv -std'' wherever possible.
Submitted by:	yar
2001-08-31 09:57:38 +00:00
ru
95ce4d2cdc Removed duplicate VCS ID tags, as per style(9). 2001-08-13 14:06:34 +00:00
iedowse
9b5fad0513 Cross-reference io(4). 2001-08-12 21:16:41 +00:00
ru
f858dca3dc mdoc(7) police: join split punctuation to macro calls. 2001-08-10 17:35:21 +00:00
yar
27b7f2d4e7 Use the ``.Rv -std'' mdoc(7) macro in appropriate cases.
Reviewed by:	ru
2001-08-09 13:32:13 +00:00
dd
a145482cf6 Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
ru
317b7d8e37 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 13:41:46 +00:00
ru
25ef23ac1c MAN[1-9] -> MAN. 2001-03-27 17:27:19 +00:00
deischen
ca55abf319 Clean up syscall generation in libc by removing HIDDEN_SYSCALLS
and treating (almost) all system calls the same way:

	__sys_foo - actual syscall
	foo, _foo - weak definitions to __sys_foo

Change PSEUDO syscalls (currently only _exit and _getlogin) to
be __sys_foo (T) and _foo (W).

Add $FreeBSD$ to a few files to satisfy commitprep.

Suggested by:	bde
2001-01-29 03:23:46 +00:00
deischen
56363d25db Comment only change; s/_thread_sys_/__sys_/ 2001-01-26 02:41:07 +00:00
deischen
1635c221b7 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
ru
8ba4187688 Prepare for mdoc(7)NG. 2000-12-29 14:08:20 +00:00
jake
cec123a65f Remove last vestiges of thr_sleep and thr_wakeup from libc. 2000-12-02 05:58:03 +00:00
jhb
09e0dbdcd9 Prefix the register argument of indirect 'jmp's with a * to make gas 2.10.x
happy.
2000-11-28 22:59:14 +00:00
ru
eb8c554f56 mdoc(7) police: use certified section headers wherever possible. 2000-11-17 11:44:16 +00:00
bsd
878d7f2499 Add a couple of debug register helper functions to assist in setting
and clearing watchpoints.

Reviewed by:	jwd@FreeBSD.org, -hackers@
2000-09-21 17:07:27 +00:00
peter
1ca10015af Fix some rather interesting bugs that managed to not turn up in various
testing and real-life applications:
1) If you returned from the thread function, you got a segv instead of
  calling _exit() with your return code.
2) clean up some bogus stack management.  There was also an underflow
  on function return.
3) when making syscalls, the kernel is expecting to have to leave space
  for the function's return address.  We need to duplicate this.  It was
  an accident that the rfork syscall actually worked here. :-/
2000-07-29 11:34:01 +00:00
peter
6a75b120d2 rfork(2) wrapper for simple rfork-style threads. I have lost count of
the number of times I have given this to people and got asked: why isn't
it in libc?  It is impossible to do this without assembler glue to reset
the stack for the new child process.

int rfork_thread(flags, stack_addr, start_fnc, start_arg)
int flags;                 Flags to rfork system call.  See rfork(2).
void *stack_addr;          Top of stack for thread.
int (*start_fnc)(void *);  Address of thread function to call in child.
void *start_arg;           Argument to pass to the thread function in child.

This is deliberately not documented or prototyped in includes until the
corresponding alpha version is written.
2000-07-29 07:14:04 +00:00
alex
df391a5a36 You need options USER_LDT in your kernel to use these functions.
PR:		18943
Submitted by:	Ben Smithurst <ben@scientia.demon.co.uk>
Reviewed by:	asmodai
2000-06-14 13:38:21 +00:00
phantom
a60a1ebfb4 Use `Er' variable to define first column width in ERRORS section. 2000-05-06 12:07:59 +00:00
jasone
bb0124f71c Use assembler directives rather than ALTENTRY() so that longjmp() and
siglongjmp() are weak symbols.  This is necessary to allow static linking
with the linuxthreads library port.
2000-05-04 04:36:26 +00:00
phantom
5401879e3b Introduce ".Lb" macro to libc manpages.
More libraries manpages updates following.
2000-04-21 09:42:15 +00:00
jasone
23c4215cb0 Take care to avoid having "strong" and "weak" symbols of the same name in
libc_r.
2000-03-16 02:14:41 +00:00
jasone
b7a1b427de Undo the ill-conceived breakage of the previous commit and really fix:
For libc_r renamed syscalls, correct symbol naming from
_thread_sys_foo() <-- _foo() to _thread_sys_foo() <-- _foo() <-- foo().  This
is necessary for system calls which libc_r doesn't define foo().

Some weak symbols such as poll() are defined twice.  From what I understand,
depending on one weak symbol or the other to be used is a bad idea.  All
such weak symbols defined in the libc_r-specific code should therefore be
made strong (non-weak?).

Simplify PSEUDO() to not define any weak symbols, since they aren't ever
needed.

alpha/SYS.h:

Correct reversed usage of WEAK_ALIAS(), which has reversed arguments from
__weak_reference().  Also, fix reversal of symbols, so that syscall foo()
is a weak alias for _foo().

Add WEAK_ALIAS() call to PRSYSCALL(), which unlike the i386 version of
PRSYSCALL(), is not defined in terms of PSYSCALL().

Make PSEUDO() equivalent to the i386 version.
2000-01-29 12:50:47 +00:00
jasone
d6a7c1c554 For syscalls that are renamed to _thread_sys_foo, create a weak alias
called _foo, not _thread_sys_foo.
2000-01-28 22:47:21 +00:00
jasone
8abe2a2d86 Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),
just use _foo() <-- foo().  In the case of a libpthread that doesn't do
call conversion (such as linuxthreads and our upcoming libpthread), this
is adequate.  In the case of libc_r, we still need three names, which are
now _thread_sys_foo() <-- _foo() <-- foo().

Convert all internal libc usage of: aio_suspend(), close(), fsync(), msync(),
nanosleep(), open(), fcntl(), read(), and write() to _foo() instead of foo().

Remove all internal libc usage of: creat(), pause(), sleep(), system(),
tcdrain(), wait(), and waitpid().

Make thread cancellation fully POSIX-compliant.

Suggested by:	deischen
2000-01-27 23:07:25 +00:00
jasone
303a1b5e43 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
jasone
271b33587d Move ENTRY and ALTENTRY definitions to asm.h where they belong.
Unbreak profiling.  Again.

Submitted by:	bde
2000-01-20 03:15:01 +00:00
jasone
2c6582da15 Make minor entry point changes to support libc_r. 2000-01-19 07:01:40 +00:00
jasone
75903038bc 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
jasone
ee0047e544 Unbreak profiling. bde says this is not the cleanest way to fix the
problem, but that it works.

Submitted by:	bde
2000-01-04 00:02:21 +00:00
jasone
15ffad75ec Creating weak symbols doesn't work correctly when building an aout libc.
Doing the "right thing" here is difficult, so create two ENTRY points for
each function (for example, __setjmp and setjmp are equivalent).  This
isn't pretty, but it works for both aout and ELF.

libc symbol naming needs an overhaul in order to properly support function
wrapping, specifically in the case of a real libpthread, and these
duplicate entry points should be fixed as part of that overhaul.

Pointed out by:	bde
1999-12-24 00:03:00 +00:00
jasone
2edcbc2e0b Make setjmp, longjmp, sigsetjmp, and siglongjmp weak aliases for
__setjmp, __longjmp, __sigsetjmp, and __siglongjmp, respectively.
This supports cancellation in the linuxthreads port.  In the long run,
a much more comprehensive solution will necessitate more dramatic changes
to libc symbol naming, and these aliases will probably need modification
at that time.
1999-12-14 20:17:52 +00:00
marcel
e56134da7a Remove osig* from NOASM. It bogus now. 1999-10-14 10:00:39 +00:00
marcel
bcf55ab2b8 \begin{quote}
setjmp() gets the jmp_buf pointer from the wrong place (the place
where the return address is) in the shlib case, and uses it (only)
to fetch the current signal mask to address (return_address + 28).
This address is normally read-only (I hope), so the sigprocmask()
call has no effect except to return an error code.
\end{quote}

Submitted by: bde
1999-10-10 08:38:33 +00:00
marcel
890df87b45 Remove syscall wrappers. 1999-10-09 15:27:09 +00:00
marcel
5bf7ce284b 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
luoqi
4c5411b984 Use definitions provided in sysarch.h for args structures.
Reviewed by:	marcel
1999-09-02 21:03:32 +00:00
peter
76f0c923fe $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
dt
7d58f8f534 Add wrappers for pread and pwrite syscalls. 1999-04-04 21:46:24 +00:00
alex
7421117a22 EACESS -> EACCES 1999-03-15 00:14:57 +00:00
julian
61490236bc Reviewed by: Luoqi Chen, Jordan Hubbard
Submitted by:	 "Richard Seaman, Jr." <lists@tar.com>
Obtained from:	linux :-)

Code to allow Linux Threads to run under FreeBSD.

By default not enabled
This code is dependent on the conditional
COMPAT_LINUX_THREADS (suggested by Garret)
This is not yet a 'real' option but will be within some number of hours.
1998-12-19 02:55:34 +00:00
luoqi
c43759f857 Simplify implementation and eliminate a register preservation problem.
Reviewed by:	Bruce Evans <bde@zeta.org.au>
1998-09-18 05:50:52 +00:00
luoqi
d4dfc59a3f Fix a cut 'n paste mistake. 1998-09-13 20:32:45 +00:00
dt
613a2bdfde In libc_r, rename vfork syscall to _thread_sys_vfork and make vfork an alias
to fork. It is difficult to do real vfork in libc_r, since almost every
operation with file descriptsor changes _thread_fd_table and friends.

popen(3) works much better with this change.
1998-09-12 22:03:20 +00:00
bde
f4657fb06b Fixed missing header in synopsis. 1998-08-03 16:29:31 +00:00
bde
de10182213 Fixed disordering in previous commit. 1998-07-29 13:43:06 +00:00
jlemon
f3f6e5cc39 u_int --> unsigned int, remove (now unneeded) <sys/types.h> 1998-07-28 15:22:51 +00:00
jlemon
6a5deaf27d oops, forgot to do ``cvs add'' first. 1998-07-28 03:39:04 +00:00
jlemon
f4995111a0 Add wrappers for i386_*_ioperm, i386_vm86 so userland code does
not have to call sysarch() directly.
Added man pages for above, as well as sysarch()
1998-07-28 03:33:27 +00:00
steve
260fa64a35 Fix a bunch of spelling errors.
PR:		6856
Submitted by:	Josh Gilliam <josh@quick.net>
1998-06-04 21:06:07 +00:00
jb
d0233a4f17 Use the thread-aware errno definition all the time. 1998-05-05 22:07:02 +00:00
jb
87e29f1d78 Build the syscalls (in libc, not libc_r) with weak symbols so that
libpthread can override them as required.
1998-05-05 22:06:16 +00:00
jb
b1f25ca922 Oops, backout the previous change having confused my underscores.
__thread_create is a syscall that uses the default asm. It is
_thread_create that contains specific asm code, but that lives in
libpthread.
1998-04-30 10:02:44 +00:00
jb
ae9a13b7c7 Make cerror thread aware by calling __error() to get a pointer to the
thread-specific error variable. This change make libc use the same cerror
code that libc_r has been using.
1998-04-30 09:32:48 +00:00
jb
96749f4d5c The syscall that creates a kernel thread is coming, but it doesn't use the
default syscall asm, so add it to NOASM. The other syscalls that manipulate
kernel threads use the default asm code, so they just get built
automatically.
1998-04-30 09:30:50 +00:00
jb
da5557c468 Stop renaming these in libc_r because wrappered versions don't make sense.
PR: i386/4826, bin/5953
1998-04-29 09:14:35 +00:00
jb
d51b6829b7 Nearly missed this one.
List non-default asm sources in MDASM so that they replace the defaults.

For funny or incomplete syscalls, list them in NOASM to stop them
from getting built as defaults.
1998-03-09 07:36:56 +00:00
bde
ff0db5fdac Removed unused file. It just forces a return value of 0 on success
(no carry), but mount() in the kernel has returned 0 on success since
prehistoric times.
1997-10-18 13:59:48 +00:00
bde
d1bc3e7989 Handle machine-dependent (stdlib) sources more automatically.
This fixes bugs in the manual handling.  abs.[cS] was handled too
specially and the wrong (.c) variant for each of div.[cS], labs.[cS]
and ldiv.[cS] was added to SRCS.  This caused the .c variant to be
used if `depend' was made and the .S version to be used otherwise.
1997-10-16 14:58:30 +00:00
bde
8306d4d37d Removed bogus .PATH statement. 1997-10-16 14:41:25 +00:00
bde
995cfe36a0 Removed the subdirectory paths from the definitions of MAN[1-9]. They
were a workaround for limitations in bsd.man.mk that were fixed about
2 years ago.
1997-10-16 14:26:13 +00:00
bde
fd943454de Handle machine-dependent (m-d) (string) sources more automatically.
The names of m-d variants are now added (manually) to MDSRCS instead
of to SRCS, and the names of all machine-independent (m-i) variants
that can reasonably be replaced by an m-d variant are now added
(manually) to MISRCS instead of to SRCS, so that a simple substitution
can be used to discard the unused m-i variants.  MISRCS is potentially
all m-i sources, but the substitution is too simple to be fast, so
MISRCS should be kept reasonably small.

libc/Makefile.inc:
Do the substitution.

libc/i386/string/Makefile.inc:
Add to MDSRCS instead of to SRCS.  Add the names of all sources in this
directory, but no others.

libc/string/Makefile.inc
Add to MISRCS instead of to SRCS.  Add the names of all sources in this
directory.  Don't use (broken) explicit rules for special cases.
1997-10-16 13:46:50 +00:00
bde
3532aa6356 Moved `SRCS+= frexp.c' to the correct Makefile.inc.
Sorted SRCS.
1997-10-14 07:43:33 +00:00
peter
486333fcfd kill the undead 1997-07-13 14:26:00 +00:00
bde
c800b77e17 This commit was generated by cvs2svn to compensate for changes in r27180,
which included commits to RCS files with non-trunk default branches.
1997-07-03 03:28:27 +00:00
bde
e2f0a0f35c Import Lite2's src/lib, except for non-i386 machine-dependent directories,
libc/db, libc/gen/crypt.* and libtelnet.  All affected files except 3
unimportant ones have already left the vendor branch.
1997-07-03 03:28:27 +00:00
jb
a1337bb0ae Changed all paths to be relative to src/lib instead of src/lib/libc
so that all these makefiles can be used to build libc_r too.

Added .if ${LIB} == "c" tests to restrict man page builds to libc
to avoid needlessly building them with libc_r too.

Split libc Makefile into Makefile and Makefile.inc to allow the
libc_r Makefile to include Makefile.inc too.
1997-05-03 03:50:06 +00:00
bde
f5e7e31898 Use separate routines for memmove() and memcpy(). This lets me drop
the (buggy) support for alternative entry points.  ALTENTRY() was only
used for memmove().  Optimizing for space was particularly silly because
memcpy() is rarely used (gcc normally inlines it).
Obtained from:	NetBSD
1997-04-20 13:02:48 +00:00
bde
6c79d08eca Use separate routines for memmove() and memcpy(). This lets me drop
the (buggy) support for alternative entry points.  ALTENTRY() was only
used for memmove().  Optimizing for space was particularly silly because
memcpy() is rarely used (gcc normally inlines it).

Obtained from:	NetBSD
1997-04-20 12:46:12 +00:00
bde
a442972318 Merged with the 1996/11/12 NetBSD version:
- use a slightly less bogus copyright.  This file was never contributed
  to Berkeley.  It still claims to be copright by the Regents.
- use <machine/asm.h> instead of "DEFS.h".
- use RCSID($Id$) instead of explicit assembly code and messy ifdefs.
  The rcsid won't be put into the object file until we make RCSID()
  non-null.  NetBSD uses a LIBC_SCCS ifdef here.  We used a LIBC_RCS
  instead, but I want RCSID() to be controlled directly by LIBC_RCS
  (actually by LIB_RCS).  This is the only difference with the NetBSD
  version.
- added ifdefs to support generation of memcpy() and memmove().  The
  other changes are "while I'm here" to get this.
- improved style of the copy backwards case.
1997-04-20 12:09:18 +00:00
bde
e5e3bb8d08 Fixed long lines.
Removed unused macros CALL() and ASMSTR.

Reviewed by:	jdp
1997-04-19 17:05:30 +00:00
bde
3b3b1c01ac Second stage of moving this to in <machine/asm.h>: just include
<machine/asm.h> here.
1997-04-15 14:18:17 +00:00
peter
e0e06d68d5 Import CSRG 4.4BSD-Lite2 lib/libc onto vendor branch 1997-03-11 11:29:42 +00:00
peter
6b08958c64 Revert $FreeBSD$ to $Id$ 1997-02-22 15:12:41 +00:00
bde
10b3d5abf8 Moved definitions of PIC macros from SYS.h to DEFS.h so that SYS.h
doesn't need to be included in files that have nothing to do with
syscalls.

Added missing `.text' to START_ENTRY so that ENTRY() works when
invoked in the data section.
1997-02-14 10:57:07 +00:00
jkh
808a36ef65 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
dyson
8f7145a6d2 Correct a "spelling" error in a comment. 1996-10-31 17:50:45 +00:00
julian
2e80ac2e78 Submitted by: john birell (jb@cimlogic.com.au)
fixups for makefiles
and for Thread-safe sycalls
1996-08-22 04:25:09 +00:00
julian
7350d1d3b2 Submitted by: John Birrell <cimaxp1!jb@werple.net.au>
Here are the diffs for libc_r to get it one step closer to P1003.1c
These make most of the thread/mutex/condvar structures opaque to the
user. There are three functions which have been renamed with _np
suffixes because they are extensions to P1003.1c (I did them for JAVA,
which needs to suspend/resume threads and also start threads suspended).

I've created a new header (pthread_np.h) for the non-POSIX stuff.

The egrep tags stuff in /usr/src/lib/libc_r/Makefile that I uncommented
doesn't work. I think its best to delete it. I don't think libc_r needs
tags anyway, 'cause most of the source is in libc which does have tags.

also:

Here's the first batch of man pages for the thread functions.
The diff to /usr/src/lib/libc_r/Makefile removes some stuff that was
inherited from /usr/src/lib/libc/Makefile that should only be done with
libc.

also:

I should have sent this diff with the pthread(3) man page.
It allows people to type

make -DWANT_LIBC_R world

to get libc_r built with the rest of the world. I put this in the
pthread(3) man page.  The default is still not to build libc_r.


also:
The diff attached adds a pthread(3) man page to /usr/src/share/man/man3.
The idea is that without libc_r installed, this man page will give people
enough info to know that they have to build libc_r.
1996-08-20 08:22:01 +00:00
jkh
c4d4a99d31 General -Wall warning cleanup, part I.
Submitted-By: Kent Vander Velden <graphix@iastate.edu>
1996-07-12 18:57:58 +00:00
bde
f5443edf10 Fixed comparisons so that preposterously large (>= 0x80000000) brk values
aren't silently converted to minbrk.  This stops malloc(INT_MAX) from
dumping core.  Small values are still silently converted.  They should
be an error.  sbrk() doesn't do any range checking or conversions or
overflow checking.

Moved PIC_EPILOGUE invocation to a more natural place where it
obviously doesn't interfere with the comparison.
1996-06-25 18:54:42 +00:00
jdp
0444ae2f09 Fix a bug caused by the collision of a local assembler label with another
use of the same label in a recently-introduced PIC_PROLOGUE.  This
should solve the recent core dumps from pdksh.
1996-05-11 13:28:11 +00:00
peter
02fead7e05 Fix a bogon in the pic + threadsafe version of cerror, it was missing
a PIC_EPILOGUE (leaving an extra long on the stack).

Submitted by: John Polstra <jdp@polstra.com>
1996-05-10 16:43:47 +00:00
peter
4b7195c991 Add support to enable libc to be compiled in ELF format. (#ifdef __ELF__)
In a nutshell, this macroizes the local/global symbol scoping rules
that are different in a.out and ELF.  It also makes the i386 assembler
stubs conform to i386 PIC calling conventions - the a.out ld.so didn't
object, but the ELF one needs it as it implements PIC jumps via PLT's as
well as calls.  The a.out rtld only worked because it was accidently
snooping the grandparent calling function's return address off the stack..

This also affects the libc_r code a little, because of cpp macro nesting.
1996-05-05 07:56:21 +00:00
peter
b6d5c41340 rfork/minherit glue in libc
man pages adapted from OpenBSD's versions.
1996-02-23 19:56:55 +00:00
peter
8b49f04c08 Put in missing '_' in call to wrapper _thread_sys_sigsetmask() function. 1996-02-17 12:25:21 +00:00
julian
619b731f5b Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00
peter
9e723d65b3 recording cvs-1.6 file death 1995-12-30 19:02:48 +00:00
peter
c3f352d4ad This commit was generated by cvs2svn to compensate for changes in r13122,
which included commits to RCS files with non-trunk default branches.
1995-12-30 19:02:48 +00:00
peter
ab124e78b0 recording cvs-1.6 file death 1995-12-30 19:02:48 +00:00
dg
092f38aea5 Be smarter about handling overlapped copies and only go backwards if it
is really necessary. Going backwards on a P6 is much slower than forwards
and it's a little slower on a P5. Also moved the count mask and 'std'
down a few lines - it's a couple percent faster this way on a P5.
1995-12-27 18:47:45 +00:00
phk
e3a316ec4a remove GCC support functions from libc.
Should never have been here in the first place.
1995-10-05 10:24:57 +00:00