Convert all users of fldoff() to offsetof(). fldoff() is bad
because it only takes a struct tag which makes it impossible to
use unions, typedefs etc.
Define __offsetof() in <machine/ansi.h>
Define offsetof() in terms of __offsetof() in <stddef.h> and <sys/types.h>
Remove the NCPU, NAPIC, NBUS, NINTR config options. Make NAPIC,
NBUS, NINTR dynamic and set NCPU to a maximum of 16 under SMP.
Move MAXCPU from machine/smp.h to machine/param.h to expose MAXCPU
in the !SMP case and replace NCPUS with MAXCPU since they are
redundant.
just the first one.
* Don't reserve extra memory for the prom console unless the platform
actually uses it.
* Fix some historical confusion and a minor bug in the message buffer
initialisation.
Submitted by: gallatin for the prom console part
Approved by: jkh
was needed to make attach/detach of devices work, which is
needed for the PCCARD support.
(PCCARD support is still not working though, more to come on that)
Support the CMD646 chip which is used on many alphas, sadly only
in WDMA2 mode, as the silicon is broken beyond belief for UDMA modes.
Lots of cosmetic fixes here and there.
Sorry for the size of this megapatchfromhell but it was not
possible otherwise...
newbus patches based on work from: dfr (Doug Rabson)
fixes some namespace pollution in general and breakage of modules that
aren't in the sys tree in particular (<machine/ipl.h> includes further
headers that aren't installed under /usr/include).
Reimplemented SPLASSERT() so that it is more machine independent and
less bloated and doesn't require the <machine/ipl.h> include spam.
In particular, don't assume that `cpl' can be printed using %08x
format. The alpha arch doesn't even have `cpl'. SPLASSERT() was
harmless on alphas because it isn't actually used.
delivering SIGBUS). This will allow a non-superuser to control unaligned
access behaviour on a per-process basis once a userland control program
(uac) is written.
Reviewed by: obrien
Tested by: obrien
unless both "option INVARIANTS" and "options INVARIANT_SUPPORT"
are defined in the kernel's config(8) file.
SPLASSERT(expression, msg) used KASSERT to check that the
expression is true, panic()ing the kernel otherwise.
Approved by: jkh
Reviewed by: jdp, dfr, phk, eivind and green
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot). This is consistant with the other
BSD's who made this change quite some time ago. More commits to come.
In combination with Doug's recent alpha_cpu.h, this reduces the cost
of ipl raising/lowering significantly. This is most pronounced when
doing file reads.
Reviewed by: dfr
specific instructions such as rpcc and mb. This should provide some
performance improvements and will allow me to delete the file pal.s.
To allow people time to update their loadable modules, I will leave pal.s
alone for now.
was likely to be counted as idle time.
Note that we are counting time spent in software interrupt handlers as
interrupt time, so this invalidates the i386 meaning of intr_nesting_level.
Reviewed by: dfr, bde
Tested by: [email protected]
The old code was spread out through the machdep code and was sloppy about
enabling and disabling the FEN bit (which controls access to the FP
register set). This caused a DIAGNOSTIC warning "DANGER WILL ROBINSON:
FEN SET IN cpu_fork!" sometimes when operating under high loads and could
conceivably lead to processes getting incorrect FP results.
The new code is much more strict about the FEN bit and makes sure that
*only* fpcurproc ever has it enabled. This also allows us to remove a
section of code from the exception_return path which might improve
performance marginally.
Reviewed by: gallatin
Merge the contents (less some trivial bordering the silly comments)
of <vm/vm_prot.h> and <vm/vm_inherit.h> into <vm/vm.h>. This puts
the #defines for the vm_inherit_t and vm_prot_t types next to their
typedefs.
This paves the road for the commit to follow shortly: change
useracc() to use VM_PROT_{READ|WRITE} rather than B_{READ|WRITE}
as argument.
David E. O'Brien