| Commit message (Collapse) | Author | Age | Files | Lines |
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faultbuf. But 1/ sr was only restored for machine check exceptions, and 2/ the
way it was saved was unsafe if interrupts were enabled, and could cause %r2
to be lost.
Discussing this with deraadt@ at the end of c2k15, this was probably needed
for the old VI boards which were the target of the original powerpc port,
came with a worse-than-Genesi openfirmware. Since then, machine check
exceptions have been unheard of; or, if they happen, they do not need the
status register to be restored.
ok mpi@ deraadt@
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delete coredump_trad(), uvm_coredump(), cpu_coredump(), struct md_coredump,
and various #includes that are superfluous.
This leaves compat_linux processes without a coredump callback. If that
ability is desired, someone should update it to use coredump_elf32() and
verify the results...
ok kettenis@
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ok kettenis drahn
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- Move the functionality of choosing a process from cpu_switch into
a much simpler function: cpu_switchto. Instead of having the locore
code walk the run queues, let the MI code choose the process we
want to run and only implement the context switching itself in MD
code.
- Let MD context switching run without worrying about spls or locks.
- Instead of having the idle loop implemented with special contexts
in MD code, implement one idle proc for each cpu. make the idle
loop MI with MD hooks.
- Change the proc lists from the old style vax queues to TAILQs.
- Change the sleep queue from vax queues to TAILQs. This makes
wakeup() go from O(n^2) to O(n)
there will be some MD fallout, but it will be fixed shortly.
There's also a few cleanups to be done after this.
deraadt@, kettenis@ ok
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MULTIPROCESSOR. From now on sprg0 holds a pointer to struct cpuinfo, which
is used to spill registers to during trap instead of the globals we used to
use for that purpose. Bits and pieces from NetBSD. Help from drahn@ and art@.
Tested by xsa@, thib@, miod@, gwk@, deraadt@.
ok drahn@, gwk@
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by reference, not by value, ok matthieu#, miod@
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the 'as' in openbsd source tree does not yet support altivec instructions.
The pieces to enable it have been put in macppc/conf/GENERIC and
macppc/conf/Makefile.macppc in comments.
Once 'as' is updated the kernel option should be removed.
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is being renamed to macppc. This is to allow sharing of common code
between different powerpc base platforms.
Most of the work involved in the renaming process was performed by miod@
Files moved from powerpc/include to macppc/include
Some files were not "moved" but wrapper files were created which include
the powerpc/include version.
Several of the powerpc/include files where changed to reflect that they
are POWERPC_* not MACHINE_*.
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access to the registers. The format of the registers returned in ptrace,
/proc and in the coredump header match what gdb was expecting.
Floating point registers are not yet copied into the structure.
The location of the fpr needs to be found and copied. <- TODO
Changes to trap.c was to add some interm debugging. code is commented out.
powerpc does not currently have a MID_* type, since it uses ELF instead
of a.out, one was never added. Currently the coredump is done in form
of MID_NONE. What is the correct approach for this?? Elf format coredumps...
maybe?
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NOTE: This will not work until the other pieces are checked in.
This is primarily the NetBSD powerpc port, with modifications
to support ELF.
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miod
guenther
deraadt
drahn
art
kettenis
millert
pefo
rahnds