very pervasive in this code. This fixes a few of those assumptions and
band-aids over some others.
Tested on: ia32 alpha sparc64
Reviewed by: peter jake (in concept)
At the front is btxldr, in the middle is BTX itself (our mini-kernel), and
then the 'client' (loader.bin) which is the actual loader itself. boot2
just executes a raw ELF or a.out binary with the only setup provided being
that a bootinfo structure is passed on the stack. Now, since loader.bin
is a BTX client, the loader needs to be able to locate a BTX kernel for
the client to execute in the context. Thus, just like pxelder, btxldr
uses the a.out header on the loader binary to find the BTX kernel stored
in the loader and set it up. It does _not_ just reuse the BTX kernel
that boot2 invoked it with. This is because it can't assume that it will
_have_ a "spare" BTX kernel lying around. For example, when cdboot
loads the loader there isn't an existing BTX kernel. In fact, cdboot
will only work with an a.out loader as well since it also "borrows" the
BTX kernel in the loader binary (which it finds by parsing the a.out
header) just as pxeldr does. The only difference between cdboot and
pxeldr is where they get /boot/loader from.
If we wanted to make /boot/loader be an actual ELF binary we would need
to change the following utilites to handle that (and they all have to be
able to handle locating the BTX kernel inside of an ELF binary somehow):
- btxldr
- pxeldr
- cdboot
If we didn't want to require a flag day but make the transition smooth
then we need to be able to support both a.out and ELF versions of
/boot/loader which isn't exactly trivial since all three of these utilities
are written in assembly.
Pointy-hat to: peter
Fix device hints entry for disabling acpi(4).
This also should fix the arbitration with apm(4) when both drivers
are enabled.
Note that your /boot/device.hints needs to be updated if you want to
stop auto-loading acpi.ko or disable acpi(4).
this was quite broken, it never was updated for metadata support.
The a.out kld file support was never really used, as it wasn't necessary.
You could always load elf kld's, even in an a.out kernel.
This is required by recent changes to <sys/pcpu.h>, which uses
the #error preprocessor directive to keep non-kernel
applications from using it.
_KERNEL is defined below the #include <stand.h>, because <stand.h>
removes the definition of _KERNEL.
- Move the inclusion of <sys/queue.h> above the inclusion of
<sys/linker.h> to avoid syntax errors.
Bug#1: The GetStatus() function returns radically different pointers that
do not match any packets we transmitted. I think it might be pointing to
a copy of the packet or something. Since we do not transmit more than
one packet at a time, just wait for "anything".
Bug#2: The Receive() function takes a pointer and a length. However, it
either ignores the length or otherwise does bad things and writes outside
of ptr[0] through ptr[len-1]. This is bad and causes massive stack
corruption for us since we are receiving packets into small buffers on
the stack. Instead, Receive() into a large enough buffer and bcopy the
data to the requested area.
the actual code. Both use a ";" (not a ",") to delimit entries.
PR: 39679
Submitted by: Cyrille Lefevre <cyrille.lefevre@laposte.net>
MFC after: 3 days
Add definition of COMPILER_DEPENDENT_INT64 and also
fix definition of COMPILER_DEPENDENT_UINT64.
Pointed-out by: Michael Nottebrock <michaelnottebrock@gmx.net>
