1. use uintptr_t instead of u_long
2. check for overflow in map_pages and malloc_pages
3. bring in fixes from FreeBSD [int -> size_t, and a missing THREAD_UNLOCK]
4. rewrite map_pages to use sbrk() only to grow memory (avoids extra syscall
and elides bug in brk(2) that ross is fixing)
5. restore the break point to its original value if the mmap(2) for the page
directory or the alignment sbrk breaks.
reviewed by: chuq and ross
tested by: make build and reboot
Now memtest nearly works; unfortunately there is no way currently to lower
the break point as we free, so memtest keeps trying to reduce memory when
mlock() fails and that does not work.
Make sure all precendence is spelled out correctly (comparison does not
have the same level as the arithmetic operators..)
Break the arithemtic operators into 2 classes (+- are lower than */%)
Restructure the arithmetic code into a function either class above can call.
Finally, add a whole suite of regression tests (checked in separately) which
the previous code failed on 3 of them.
to guess the pciide capabilities, rather than trying to guess it by ourselve.
Add preliminary support for the 686b (Ultra/100) guessed from FreeBSD/linux
driver (datasheet not publically available, I contacted via).
Let chip-specific map routine do the autoconf printf if ide_name is NULL
(they may have more details about the controller than we have in pciide_attach)
- use "U" suffix for unsigned constants
- use "L" suffix for long constants
- use "UL" suffix for unsigned long constants
- use hexadecimal instead of decimal
Fixes build problems with vi (now that warnings/errors are enabled) on
mips, powerpc and arm platforms.
and for initial autoconf probes; the latter eliminates need for
deferred configuration (and makes dmesg a bit nicer).
g/c EDF_IODONE flag - protect against interrupt by calling tsleep()
at splbio in worker thread
g/c unneeded stuff, improve some autoconf messages
