utrapframe that fixed in size (and the same size as the trapframe
in NetBSD 1.5). This preserves binary compatibility for those programs
that dealt looked at sigcontexts.
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.
On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.
* install 601-specific DSI and RUNMODETRC trap handlers
* save/restore MQ in trapframe, add MQ hooks to DDB
* extend battable to 512 entries to hold the 601's 8M translations
* instead of adding I/O to BAT starvation, set up segment registers
for Memory-Forced I/O Controller Interface Access
* sync after tlbie
Simplify copyin/copyout/copyinstr/copyoutstr. Fix bug
where the user virtual address was not updated so that
if the user's buffer crossed a segment boundary, the
wrong data could be copied. Localize USER_SR to the
ILP32 version of setusr/unsetusr.
two ways:
- the child gets its pid as retval[0] (userland stub will turn it into a 0),
retval[1] is 1 and it is 0 in the parent.
- in the child, the fork syscall is successful, hence we must skip the next
instruction.
"evictions" and avoide calling pmap_pte_spill if there are no evictions
for the current pmap. Make the ISI execption use the default exception
code. Remove lots of dead stuff from trap_subr.
Make olink use TAILQ instead of LIST and be sorted with evicted entries
first and resident entries last. Make use of this knowledge to make
pmap_pte_spill do a fast exit.
