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Commit Graph

137 Commits

Author SHA1 Message Date
Jonathan Mini
1d6e1c66b2 Add signalcontext(), which adds a signal frame to a ucontext_t. 2002-09-17 03:11:07 +00:00
Peter Wemm
66422f5b7a Initiate deorbit burn for the i386-only a.out related support. Moves are
under way to move the remnants of the a.out toolchain to ports.  As the
comment in src/Makefile said, this stuff is deprecated and one should not
expect this to remain beyond 4.0-REL.  It has already lasted WAY beyond
that.

Notable exceptions:
gcc - I have not touched the a.out generation stuff there.
ldd/ldconfig - still have some code to interface with a.out rtld.
old as/ld/etc - I have not removed these yet, pending their move to ports.
some includes - necessary for ldd/ldconfig for now.

Tested on: i386 (extensively), alpha
2002-09-17 01:49:00 +00:00
Jonathan Mini
f990583656 Save and restore FPU state properly in ucontext_t's.
Reviewed by:	deischen, julian
Approved by:	-arch
2002-09-16 19:24:31 +00:00
Robert Drehmel
b78411b153 Include <stdlib.h> to have abort() and exit() declared. 2002-08-15 11:58:24 +00:00
Alexander Kabaev
dc0f86a25d Use '_end' symbol instead of 'end' to initialize minbrk and curbrk
variables. Both symbols are set to the same value by the linker,
and _end symbol has less chances to clash with application defined
global symbols.

alpha, ia64 and sparc64 ports already use _end, i386 is now
consistent with them.

Reviewed by:	bde
Approved by:	obrien
Reported by:	pirzyk
2002-08-08 17:28:07 +00:00
Mike Silbersack
11289efd80 Fix style bugs I added in last commit.
Spotted by:	bde
2002-06-27 14:16:21 +00:00
Mike Silbersack
1228a1c634 Modify bcopy (and memcpy/memmove) so that the length value is not
re-read from the stack mid copy.  This may help mitigate the recent
Apache buffer overrun and future overruns of the sort.

Reviewed by:	jdp
MFC after:	2 days
2002-06-27 03:55:36 +00:00
Jens Schweikhardt
21dc7d4f57 Fix typo in the BSD copyright: s/withough/without/
Spotted and suggested by:	des
MFC after:	3 weeks
2002-06-02 20:05:59 +00:00
Jake Burkholder
530622075e Generate the normal asm stubs for all sysv system calls. Use these instead
of C wrappers for the *sys indirect system calls.  The indirect system calls
are horribly broken on sparc64.

Submitted by:	tmm
2002-05-23 23:51:57 +00:00
David E. O'Brien
c04447ba03 Standardize on our SCM ID style. 2002-03-23 02:44:19 +00:00
David E. O'Brien
0f4f02856d Restore CSRG ID's lost in January 1995. 2002-03-23 02:10:28 +00:00
David E. O'Brien
1114a754ed Fix the style of the SCM ID's.
I believe have made all of libc .h's as consistent as possible.
2002-03-22 23:42:05 +00:00
David E. O'Brien
333fc21e3c Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.
2002-03-22 21:53:29 +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
Bill Fumerola
29ec623730 cosmetic: spell 'cashe' as 'cache' 2002-03-10 12:08:28 +00:00
Mike Barcroft
fd8e4ebc8c o Move NTOHL() and associated macros into <sys/param.h>. These are
deprecated in favor of the POSIX-defined lowercase variants.
o Change all occurrences of NTOHL() and associated marcros in the
  source tree to use the lowercase function variants.
o Add missing license bits to sparc64's <machine/endian.h>.
  Approved by: jake
o Clean up <machine/endian.h> files.
o Remove unused __uint16_swap_uint32() from i386's <machine/endian.h>.
o Remove prototypes for non-existent bswapXX() functions.
o Include <machine/endian.h> in <arpa/inet.h> to define the
  POSIX-required ntohl() family of functions.
o Do similar things to expose the ntohl() family in libstand, <netinet/in.h>,
  and <sys/param.h>.
o Prepend underscores to the ntohl() family to help deal with
  complexities associated with having MD (asm and inline) versions, and
  having to prevent exposure of these functions in other headers that
  happen to make use of endian-specific defines.
o Create weak aliases to the canonical function name to help deal with
  third-party software forgetting to include an appropriate header.
o Remove some now unneeded pollution from <sys/types.h>.
o Add missing <arpa/inet.h> includes in userland.

Tested on:	alpha, i386
Reviewed by:	bde, jake, tmm
2002-02-18 20:35:27 +00:00
Bruce Evans
b9c35b6942 Fixed unsorting and splitting of SRCS in previous commit. 2002-01-11 17:10:35 +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
John Baldwin
a1d8094b9e 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
John Baldwin
4d29433e33 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
John Baldwin
7bfd54ac0f 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 Wemm
e6d808aee3 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
Ruslan Ermilov
c764884325 Just use RSYSCALL. 2001-10-19 13:32:24 +00:00
Ruslan Ermilov
32eef9aeb1 mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
Ruslan Ermilov
d6002fef6f Use ``.Rv -std'' wherever possible.
Submitted by:	yar
2001-08-31 09:57:38 +00:00
Ruslan Ermilov
8af1452cf8 Removed duplicate VCS ID tags, as per style(9). 2001-08-13 14:06:34 +00:00
Ian Dowse
cd0ada9d94 Cross-reference io(4). 2001-08-12 21:16:41 +00:00
Ruslan Ermilov
94ba280c59 mdoc(7) police: join split punctuation to macro calls. 2001-08-10 17:35:21 +00:00
Yaroslav Tykhiy
b1250632c5 Use the ``.Rv -std'' mdoc(7) macro in appropriate cases.
Reviewed by:	ru
2001-08-09 13:32:13 +00:00
Dima Dorfman
7ebcc426ef Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
Ruslan Ermilov
a307d59838 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 13:41:46 +00:00
Ruslan Ermilov
4a558355e5 MAN[1-9] -> MAN. 2001-03-27 17:27:19 +00:00
Daniel Eischen
c37592a194 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
Daniel Eischen
f3e8cfe5ef Comment only change; s/_thread_sys_/__sys_/ 2001-01-26 02:41:07 +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
Ruslan Ermilov
4263595653 Prepare for mdoc(7)NG. 2000-12-29 14:08:20 +00:00
Jake Burkholder
4231c165f7 Remove last vestiges of thr_sleep and thr_wakeup from libc. 2000-12-02 05:58:03 +00:00
John Baldwin
9a51cfcde1 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
Ruslan Ermilov
251c176f41 mdoc(7) police: use certified section headers wherever possible. 2000-11-17 11:44:16 +00:00
Brian S. Dean
9d90941a83 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 Wemm
ea3d353444 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 Wemm
c932e5d18f 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
Alexander Langer
c20d2ab74b 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
Alexey Zelkin
03fc63031e Use `Er' variable to define first column width in ERRORS section. 2000-05-06 12:07:59 +00:00
Jason Evans
9976e59211 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
Alexey Zelkin
25bb73e063 Introduce ".Lb" macro to libc manpages.
More libraries manpages updates following.
2000-04-21 09:42:15 +00:00
Jason Evans
b479399f73 Take care to avoid having "strong" and "weak" symbols of the same name in
libc_r.
2000-03-16 02:14:41 +00:00
Jason Evans
e9a89b2196 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
Jason Evans
cabdf9cef3 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
Jason Evans
9233c4d942 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