port: T_IDIV0 is the hardware trap generated on integer division by
zero, T_DIV0 is the software trap used to signal the same event.
This makes 32 bit kernels able to run sparc code with the v7 multiply/
divide library, as well as with the v8 one.
port: T_IDIV0 is the hardware trap generated on integer division by
zero, T_DIV0 is the software trap used to signal the same event.
This makes 32 bit kernels able to run sparc code with the v7 multiply/
divide library.
Spotted by Valeriy E. Ushakov.
- in tlb_flush_all(), don't skip TLB entries with the high bit on,
I was confused about which MMU register it was using. it's also fine
to use the last hardware context.
- in pmap_create(), don't allocate a hardware context for the new pmap.
it's unnecessary, and when this would cause us to recycle all the contexts,
it would result in the current process's context being set to 0
(ie. the kernel's context). the current process could then return to
userspace without going through the context-switch code (and thus without
having a hardware context reallocated). this would lead to user mappings
being entered in the kernel's context later, causing all sorts of trouble.
add some assertions to catch this kind of thing.
cd ${KERNSRCDIR}/${KERNARCHDIR}/compile && ${PRINTOBJDIR}
This is far simpler than the previous system, and more robust with
objdirs built via BSDOBJDIR.
The previous method of finding KERNOBJDIR when using BSDOBJDIR by
referencing _SRC_TOP_OBJ_ from another directory was extremely
fragile due to the depth first tree walk by <bsd.subdir.mk>, and
the caching of _SRC_TOP_OBJ_ (with MAKEOVERRIDES) which would be
empty on the *first* pass to create fresh objdirs.
This change requires adding sys/arch/*/compile/Makefile to create
the objdir in that directory, and descending into arch/*/compile
from arch/*/Makefile. Remove the now-unnecessary .keep_me files
whilst here.
Per lengthy discussion with Andrew Brown.
well as reporting the actual machine model & cpu, rather than first configured
CPU. changes for two machines are:
old:
hw.model = TMS390Z50 v0 or TMS390Z55 @ 75 MHz, on-chip FPU
hw.model = SUNW,UltraSPARC @ 143.002 MHz, version 0 FPU
new:
hw.model = SUNW,SPARCstation-20 (TMS390Z50 v0 or TMS390Z55 @ 75 MHz, on-chip FPU)
hw.model = SUNW,Ultra-1 (SUNW,UltraSPARC @ 143.002 MHz, version 0 FPU)
as per discussion on port-sparc & port-sparc64.
- The MD netbsd32_machdep.h header now defines the 32-bit pointer type
instead of using u_int32_t everywhere,
- The MD netbsd32_machdep.h header now defines a macro (at least on
current implementations) which converts a 32-bit pointer to its 64-bit
equivalent,
- Change the MI code to utilise the above two items in all the right places,
- Implement netbsd32___sigaction_sigtramp().
Tested on Sparc64 by Matt Green.
kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals
kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)
based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe
UPA is just a physical incarnation of our mainbus0.
Evidence:
- There can only be one!
- The firmware node coresponding to it is the root of the OF tree
So: remove the unused (and uncompilable) upa.c, remove upavar.h after
moving the only declaration used from it to autoconf.h.
