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Dan Carosone <danielce@ee.mu.oz.au>.
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New generic disk framework. Highlights:
New metrics handling. Metrics are now kept in the new `struct disk'.
Busy time is now stored as a timeval, and transfer count in bytes.
Storage for disklabels is now dynamically allocated, so that the size
of the disk structure is not machine-dependent.
Several new functions for attaching and detaching disks, and handling
metrics calculation.
Old-style instrumentation is still supported in drivers that did it
before. However, old-style instrumentation is being deprecated, and
will go away once the userland utilities are updated for the new
framework.
For usage and architectural details, see the forthcoming disk(9)
manual page.
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Update a kludge from 4.4bsd/pmax: DECstation PROMs force the clock to
be in 1972 or 1973. If the clock is set to the actual time, the PROM
appears to reset the chip date to 1972 at each reboot.
Change the "year offset" from 22 years to 24 years (good till 1997)
until this code is replaced with something that uses the chip as a
seconds-since-beginning-of-year clock (encoded as a date, relative to
1972-01-01 00:00:00).
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pr#1784
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Move the old-style disk instrumentation "structures" to a central
location (sys/kern/subr_disk.c) and note that they should/will be
deprecated.
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Fix typo (two rz4s, no rz5) and add options KTRACE.
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Config file used to build pmax kernels in NetBSD/1.1
miniroots, from Arne Juul (arnej@pvv.unit.no).
(like NEWCONF, except with options GENERIC)
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Use machine-independent TurboChannel include files from dev/tc.
Add machine-dependent TC definitions in pmax/include/tc_machdep.h.
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Change MachEmulateBranch() to be able to read an insn from user space.
Kernel-debugger breakpoints in user space, or FP insns that cause
underflow in a delay slot, should now work properly. Single-stepping
of arbitrary user processes, from user level, should be added.
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Change splimp -> splnet in Ethernet, ARCnet, and FDDI drivers.
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Add support for ptrace PT_GETREGS and PT_SETREGS for NetBSD/pmax:
* define PT_GETREGS and PT_SETREGS in pmax/include/ptrace.h
* Flesh out the stubs in pmax/pmax/process_machdep.c to handle
those requests.
* Now that "struct reg" is actually used, remove the bogus
#ifdef LANGUAGE_C around its definition, and redo pmax/include/reg.h
so that the definitions needed by locore.S are in a separate file,
pmax/include/regnum.h.
* update locore.S to match.
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Update the old (4.4bsd/pmax) miniroot build scripts to put mount_ffs
on a miniroot, until the new miniroot tools work on a pmax.
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Change mips __warn_references() macro to use the ELF warning features
in binutils 2.6 and (patched) gcc 2.7.2. Only works with gcc in ANSI C
mode, for now.
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pr#1695
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