src/sys/kern/kern_exec.c, branch release/3.3.0_cvs

This commit was manufactured by cvs2svn to create tag

1999-09-16T08:26:13+00:00

'RELENG_3_3_0_RELEASE'.

This commit was manufactured to restore the state of the 3.3-RELEASE image.
Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.

$Id$ -> $FreeBSD$

1999-08-29T16:33:42+00:00

MFC: stop profiling on exec

1999-08-22T08:19:57+00:00

MFC (3 April 1999): Enable BSD/OS binaries to run in configurations

1999-04-14T04:55:24+00:00

that have a large kernel virtual address space.

Add (but don't activate) code for a special VM option to make

1999-01-06T23:05:42+00:00

downward growing stacks more general.
Add (but don't activate) code to use the new stack facility
when running threads, (specifically the linux threads support).
This allows people to use both linux compiled linuxthreads, and also the
native FreeBSD linux-threads port.

The code is conditional on VM_STACK. Not using this will
produce the old heavily tested system.

Submitted by: Richard Seaman

Various changes to support OSF1 emulation:

1998-12-30T10:38:59+00:00

* Move the user stack from VM_MAXUSER_ADDRESS to a place below the 32bit
  boundary (needed to support 32bit OSF programs).  This should also save
  one pagetable per process.
* Add cvtqlsv to the set of instructions handled by the floating point
  software completion code.
* Disable all floating point exceptions by default.
* A minor change to execve to allow the OSF1 image activator to support
  dynamic loading.

Fix some 64bit truncation problems which crept into SYSCTL_LONG() with the

1998-12-27T18:03:29+00:00

last cleanup.  Since the oid_arg2 field of struct sysctl_oid is not wide
enough to hold a long, the SYSCTL_LONG() macro has been modified to only
support exporting long variables by pointer instead of by value.

Reviewed by: bde

Removed the cast to a pointer in the definition of PS_STRINGS and

1998-12-16T16:28:58+00:00

adjusted related casts to match (only in the kernel in this commit).
The pointer was only wanted in one place in kern_exec.c.  Applications
should use the kern.ps_strings sysctl instead of PS_STRINGS, so they
shouldn't notice this change.

Removed all traces of SYSCTL_INTPTR(). Pointers can't really be passed

1998-12-16T16:06:29+00:00

across the kernel -> application interface, and for the one sysctl where
they were passed and actually used (kern.ps_strings), the applications
want addresses represented as u_longs anyway (the other sysctl that
passed them, kern.usrstack, has never been used).

Agreed to by:	dfr, phk

Added a second argument, "activate" to the vm_page_unwire() call so that

1998-10-28T13:37:02+00:00

the caller can select either inactive or active queue to put the page on.