peter [Mon, 9 Mar 1998 03:26:57 +0000 (03:26 +0000)]
Don't disable the use of $ in assembler labels.. It changes libstdc++
and libg++ so that they won't work with existing binaries (including
netscape!!).
Import of alpha specific bits to configure binutils for FreeBSD/Alpha.
Other changes that affect the i386-elf work are on hold to avoid
stuffing up other work in progress.
Update to build binutils (yay!), so that ar, ld, as, strip, nm, objcopy,
objdump all build out of the FreeBSD tree. At EDS we used to call this
a "significant emotional event".
Still using the lorder script from NetBSD until I can explain why the
is a difference in nm behaviour when the output looks the same.
Our default rules tend to shove asm code through cpp, so comments
starting with hashes have a sub-optimal impact. This change adds
/* */ around the block comment in the header of each file to make
them friendly to cpp. Also added an Id keyword cause I like to
see revision numbers in source.
mckay [Sun, 8 Mar 1998 15:15:33 +0000 (15:15 +0000)]
Fixed a few ancient typos, added a little missing stuff, and updated
references to abort() in light of POSIX mandated behaviour. I'm
still not 100% happy with much of the wording, but it's better
than it was.
msmith [Sun, 8 Mar 1998 15:06:55 +0000 (15:06 +0000)]
Construct the minor number for the root device taking into account the
slice number passed in by the bootblocks. This means the kernel will
not use the compatability slice to obtain the root filesystem when
booting from a sliced disk.
Use the extraction macros from reboot.h rather than stating them in full
again.
msmith [Sun, 8 Mar 1998 15:04:20 +0000 (15:04 +0000)]
Define shift, mask and extraction macros for obtaining the slice number
from the bootdev parameter. This is arguably a 386-ism, although disks
partitioned in this fashion are not uncommon.
msmith [Sun, 8 Mar 1998 14:50:04 +0000 (14:50 +0000)]
If we are mounting the root filesystem, and we're accessing it through
something that might refer to the compatability slice rather than the
correct slice entry, try all the possible slice entries first.
This is a compatability hack to deal with the case where the kernel has
correctly mounted the root filesystem out of its slice, but the user
has not updated their /etc/fstab file to reflect this. A diagnostic
is emitted if the mount succeeds, indicating that the file should be
updated.
This is a prelude to fixing the kernel to behave as alluded to above.
Reviewed by: (discussed with) julian, phk
peter [Sun, 8 Mar 1998 14:19:18 +0000 (14:19 +0000)]
Rewrite script as a select loop rather than as a twin reader/write process.
This allows simple logging of keys sent to a session (turned on with -k).
Also allow specifying the script file flush interval.
peter [Sun, 8 Mar 1998 13:26:15 +0000 (13:26 +0000)]
svr4.h defines ASM_IDENTIFY_GCC, but neglects to define
ASM_IDENTIFY_LANGUAGE. Use the osfrose.h method, because gdb assumes
'C' by default, so there's no need to further clutter the symbol table.
dyson [Sun, 8 Mar 1998 06:25:59 +0000 (06:25 +0000)]
Several minor fixes:
1) When freeing pages, it is a good idea to protect them off.
(This is probably gratuitious, but good form.)
2) Allow collapsing pages in the backing object that are
PQ_CACHE. This will improve memory utilization.
3) Correct the collapse code so that pages that were on the
cache queue are moved to the inactive queue. This is
done when pages are marked dirty (so that those pages
will be properly paged out instead of freed), so that
cached pages will not be paradoxically marked dirty.
peter [Sun, 8 Mar 1998 05:29:49 +0000 (05:29 +0000)]
First round of changes to support generation of assembler for the old
a.out gas and the binutils gas (elf or a.out) with a single compiler.
This uses other infrastructure not yet committed, in order to support
both a.out and elf it needs to be able to get to both a.out and elf
gas, ld, libs, crt* etc. So for now, the support is pretty much dormant.
The new freebsd.h file is based on the old freebsd-elf.h file (which has a
long lineage, right back through linux and svr4 files). The change is
pretty dramatic from a gcc internals standpoint as it overrides a lot of
definitions in order to generate different output based on target mode.
There is potential for screw-ups, so please be on the lookout - gcc's
configuration mechanism wasn't really meant for this kind of thing.
It's believed to compile world etc just fine under both a.out and elf, can
handle global constructors and destructors, handles the differences in
a.out and elf stabs, and what sections things like exceptions go in.
The initial idea came from i386/osfrose.h which is a dual rose/elf format
target. These two are not as diverse as a.out and elf it would seem.
The cc front-end uses external configuration to determine default object
format (still being thrashed out, so read the source if you want to see
it so far), and has a '-aout' and '-elf' override command line switch.
There are some other internal switches that can be accessed, namely -maout,
-mno-aout, -munderscores and -mnounderscores. The underscore and local
symbol prefixing rules are controllable seperately to the output format.
(ie: it's possible to generate a.out without the _ prefixes on symbols and
also to generate elf with the _ prefixes. This isn't quite optimal, but
does seem to work pretty well, except the linkers don't always recognise
the local symbols without their normal names)
The default format is a.out (still), nobody should see any major changes.
With both elf and a.out tools and libraries installed:
[1:26pm]/tmp-223> cc -elf -o hello hello.c
peter@beast[1:27pm]/tmp-224> file hello
hello: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), dynamically linked, not stripped
[1:27pm]/tmp-225> ./hello
hello world!
Add sched_yield() witch is the draft 10 equivalent of pthread_yield()
from draft 4. Move some of the schedule definitions to sched.h which
is a POSIX header.
Add a POSIX sched header. pthread_yield() in draft 4 becomes
sched_yield() in the final draft (10). This header contains the
prototype. Other things in here are "future".
dyson [Sat, 7 Mar 1998 21:37:31 +0000 (21:37 +0000)]
This mega-commit is meant to fix numerous interrelated problems. There
has been some bitrot and incorrect assumptions in the vfs_bio code. These
problems have manifest themselves worse on NFS type filesystems, but can
still affect local filesystems under certain circumstances. Most of
the problems have involved mmap consistancy, and as a side-effect broke
the vfs.ioopt code. This code might have been committed seperately, but
almost everything is interrelated.
1) Allow (pmap_object_init_pt) prefaulting of buffer-busy pages that
are fully valid.
2) Rather than deactivating erroneously read initial (header) pages in
kern_exec, we now free them.
3) Fix the rundown of non-VMIO buffers that are in an inconsistent
(missing vp) state.
4) Fix the disassociation of pages from buffers in brelse. The previous
code had rotted and was faulty in a couple of important circumstances.
5) Remove a gratuitious buffer wakeup in vfs_vmio_release.
6) Remove a crufty and currently unused cluster mechanism for VBLK
files in vfs_bio_awrite. When the code is functional, I'll add back
a cleaner version.
7) The page busy count wakeups assocated with the buffer cache usage were
incorrectly cleaned up in a previous commit by me. Revert to the
original, correct version, but with a cleaner implementation.
8) The cluster read code now tries to keep data associated with buffers
more aggressively (without breaking the heuristics) when it is presumed
that the read data (buffers) will be soon needed.
9) Change to filesystem lockmgr locks so that they use LK_NOPAUSE. The
delay loop waiting is not useful for filesystem locks, due to the
length of the time intervals.
10) Correct and clean-up spec_getpages.
11) Implement a fully functional nfs_getpages, nfs_putpages.
12) Fix nfs_write so that modifications are coherent with the NFS data on
the server disk (at least as well as NFS seems to allow.)
13) Properly support MS_INVALIDATE on NFS.
14) Properly pass down MS_INVALIDATE to lower levels of the VM code from
vm_map_clean.
15) Better support the notion of pages being busy but valid, so that
fewer in-transit waits occur. (use p->busy more for pageouts instead
of PG_BUSY.) Since the page is fully valid, it is still usable for
reads.
16) It is possible (in error) for cached pages to be busy. Make the
page allocation code handle that case correctly. (It should probably
be a printf or panic, but I want the system to handle coding errors
robustly. I'll probably add a printf.)
17) Correct the design and usage of vm_page_sleep. It didn't handle
consistancy problems very well, so make the design a little less
lofty. After vm_page_sleep, if it ever blocked, it is still important
to relookup the page (if the object generation count changed), and
verify it's status (always.)
18) In vm_pageout.c, vm_pageout_clean had rotted, so clean that up.
19) Push the page busy for writes and VM_PROT_READ into vm_pageout_flush.
20) Fix vm_pager_put_pages and it's descendents to support an int flag
instead of a boolean, so that we can pass down the invalidate bit.
tegge [Sat, 7 Mar 1998 20:48:16 +0000 (20:48 +0000)]
Reenable redirection of clock interrupt to a higher priority vector.
setidt() now knows about f00f_hack(), and the APs now use the same
interrupt descriptor table as the BSP.
dyson [Sat, 7 Mar 1998 20:45:47 +0000 (20:45 +0000)]
Make vm_fault much cleaner by removing the evil macro inlines, and
put alot of it's context into a data structure. This allows
significant shortening of its codepath, and will significantly
decrease it's cache footprint.
Also, add some stats to vmmeter. Note that you'll have to
rebuild/recompile vmstat, systat, etc... Otherwise, you'll
get "very interesting" paging stats.
jdp [Sat, 7 Mar 1998 19:24:35 +0000 (19:24 +0000)]
Import the ELF dynamic linker. This is the ElfKit version with
quite a few enhancements and bug fixes. There are still some known
deficiencies, but it should be adequate to get us started with ELF.
jdp [Sat, 7 Mar 1998 19:24:35 +0000 (19:24 +0000)]
Import the ELF dynamic linker. This is the ElfKit version with
quite a few enhancements and bug fixes. There are still some known
deficiencies, but it should be adequate to get us started with ELF.
bde [Sat, 7 Mar 1998 15:36:29 +0000 (15:36 +0000)]
Set the input and output buffer sizes and the input buffer watermarks
dynamically depending on the line speed(s). This should give the old
sizes and watermarks until drivers are changed.
Display the input watermarks in pstat and sicontrol.
bde [Sat, 7 Mar 1998 13:13:41 +0000 (13:13 +0000)]
Fixed generation of extra dependencies:
- the two `_EXTRADEPEND::' targets potentially clobbered each other for
`make -jN'. In practice, the output for the second target sometimes
disappeared.
- bogus dependencies were generated for static libraries.
bde [Sat, 7 Mar 1998 09:49:12 +0000 (09:49 +0000)]
Use `foo/bar.a' instead of `-Lfoo -lbar' for linking to static internal
libraries so that `ld -f' in can create correct dependencies for
yet-to-be-built libraries.
Get the default BINDIR correctly (by including ../Makefile.inc recursively.
Override the default it it is wrong.
Don't override defaults when the defaults are correct.
bde [Sat, 7 Mar 1998 09:48:14 +0000 (09:48 +0000)]
Use `foo/bar.a' instead of `-Lfoo -lbar' for linking to static internal
libraries so that `ld -f' in can create correct dependencies for
yet-to-be-built libraries.
Get the default BINDIR correctly (by including ../Makefile.inc recursively.
Override the default it it is wrong.
Don't override defaults when the defaults are correct.
bde [Sat, 7 Mar 1998 09:46:17 +0000 (09:46 +0000)]
Use `foo/bar.a' instead of `-Lfoo -lbar' for linking to static internal
libraries so that `ld -f' in can create correct dependencies for
yet-to-be-built libraries.
Get the default BINDIR correctly (by including ../Makefile.inc recursively.
bde [Sat, 7 Mar 1998 08:55:00 +0000 (08:55 +0000)]
Use `foo/bar.a' instead of `-Lfoo -lbar' for linking to static internal
libraries, so that `ld -f' in can create correct dependencies for
yet-to-be-built libraries.
wpaul [Sat, 7 Mar 1998 05:06:10 +0000 (05:06 +0000)]
Fix resource allocation problems:
- Completely recoded the ypmatch cache code. The old code could leak
memory: it would allow the cache to grow, but never
shrink. The new code imposes the following limits:
o The cache is capped at a limit of 5 entries.
o Each entry expires after five seconds, at which point
its slot is freed.
o If an insertion is to be done and all five slots
are filled, the oldest entry is forcibly expired
to release its slot.
Also, the cache is implemented on a per-binding basis rather than
having a global cache covering all bindings. This means that each
bound domain has its own 5 slot cache.
- Changed clntudp_create() to clntudp_bufcreate() so that the
xmit/recv message buffer sizes can be set explicitly. NIS transactions
are rarely much larger than 1024 bytes since YPMAXRECORD is 1024.
The defaults chosen by clntudb_create() are actually much larger
than needed. I set the xmit buffer to a little over 1024 and the
recv buffer to a little over 2048. This saves a few Kbytes for each
NIS binding.
- Add my name to the copyright. I think I've made enough changes to
this file to merit it. :)
Note: these changes should go into the 2.2.x branch, but I'm waiting
on feedback from a tester to see if the cache fixes solve the reported
memory leak problem.