things over floppy size limits, I can exclude it for release builds or
something like that. Most of the changes are to get the load_elf.c file
into a seperate elf32_ or elf64_ namespace so that you can have two
ELF loaders present at once. Note that for 64 bit kernels, it actually
starts up the kernel already in 64 bit mode with paging enabled. This
is really easy because we have a known minimum feature set.
Of note is that for amd64, we have to pass in the bios int 15 0xe821
memory map because once in long mode, you absolutely cannot make VM86
calls. amd64 does not use 'struct bootinfo' at all. It is a pure loader
metadata startup, just like sparc64 and powerpc. Much of the
infrastructure to support this was adapted from sparc64.
that were added to sparc64 and later powerpc, really should have been in
the MI area. But changing that now with insufficient preperation will
just cause too much pain.
Move MD_FETCH() to the MI sys/linker.h file to avoid another two copies
of it.
object: subdisks, plexes and volumes. The encoding for plexes and
subdisks no longer reflects the object to which they belong. The
super devices are high-order volume numbers. This gives vastly more
potential volumes (4 million instead of 256).
Rewrite minor number decoding. Now we have only three types of
object: subdisks, plexes and volumes. The encoding for plexes and
subdisks no longer reflects the object to which they belong. The
super devices are high-order volume numbers. This gives vastly more
potential volumes (4 million instead of 256).
object: subdisks, plexes and volumes. The encoding for plexes and
subdisks no longer reflects the object to which they belong. The
super devices are high-order volume numbers. This gives vastly more
potential volumes (4 million instead of 256).
Correct formats for some error messages. Don't cast the value to
match the format.
object: subdisks, plexes and volumes. The encoding for plexes and
subdisks no longer reflects the object to which they belong. The
super devices are high-order volume numbers. This gives vastly more
potential volumes (4 million instead of 256).
Tidy up comments.
Check for null rqgs. This continue to be reported, though I can't
work out why.
Correct formats for some error messages. Don't cast the value to
match the format.
Use microtime, not getmicrotime, for timing debug entries.
object: subdisks, plexes and volumes. The encoding for plexes and
subdisks no longer reflects the object to which they belong. The
super devices are high-order volume numbers. This gives vastly more
potential volumes (4 million instead of 256).
As a result of the minor number changes, split out the superdevice
handling into a separate function, vinum_super_ioctl. This was most
of the code of vinumioctl.
attachobject: Improve error checking.
init_drive: Rephrase error message text.
Remove dead code (inside #if 0).
Change name of find_drive_by_dev to the more descriptive
find_drive_by_name.
Tidy up comments.
get_emppty_drive: Fix a day one bug with strcpy parameters.
Change name of find_drive_by_dev to the more descriptive
find_drive_by_name.
Rewrite minor number decoding. Now we have only three types of
object: subdisks, plexes and volumes. The encoding for plexes and
subdisks no longer reflects the object to which they belong. The
super devices are high-order volume numbers. This gives vastly more
potential volumes (4 million instead of 256).
object: subdisks, plexes and volumes. The encoding for plexes and
subdisks no longer reflects the object to which they belong. The
super devices are high-order volume numbers. This gives vastly more
potential volumes (4 million instead of 256).
Remove an unnecessary goto.
vinumopen: Return EINVAL, not ENXIO, on an attempt to open a
referenced plex.
a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to
attempt to get a stable base to start from. There is a lot missing still.
Worth noting:
- The kernel runs at 1GB in order to cheat with the pmap code. pmap uses
a variation of the PAE code in order to avoid having to worry about 4
levels of page tables yet.
- It boots in 64 bit "long mode" with a tiny trampoline embedded in the
i386 loader. This simplifies locore.s greatly.
- There are still quite a few fragments of i386-specific code that have
not been translated yet, and some that I cheated and wrote dumb C
versions of (bcopy etc).
- It has both int 0x80 for syscalls (but using registers for argument
passing, as is native on the amd64 ABI), and the 'syscall' instruction
for syscalls. int 0x80 preserves all registers, 'syscall' does not.
- I have tried to minimize looking at the NetBSD code, except in a couple
of places (eg: to find which register they use to replace the trashed
%rcx register in the syscall instruction). As a result, there is not a
lot of similarity. I did look at NetBSD a few times while debugging to
get some ideas about what I might have done wrong in my first attempt.
were, they are not safe to use outside of the kernel since these values
can change at kernel compile time - ie: we do not want them compiled into
userland binaries.
Rename visible x86_64 references to amd64.
Kill MID_MACHINE, its a.out specific, the only platform that supports it
is i386. All of the other platforms should remove it too.
have to use it since all AMD64 machines are supposed to have acpi etc,
I'm using it during development so I can avoid the acpi code for now.
Yes, this is cheating.
