When doing a 'make depend', dont blow away the existing .depend until
the generation of a new one is complete.

Added necessary quotes (${CPP} might have spaces in it). Removed
unnecessary quotes.

Mega-commit for Linux emulator update.. This has been stress tested under
netscape-2.0 for Linux running all the Java stuff. The scrollbars are now
working, at least on my machine. (whew! :-)

I'm

Mega-commit for Linux emulator update.. This has been stress tested under
netscape-2.0 for Linux running all the Java stuff. The scrollbars are now
working, at least on my machine. (whew! :-)

I'm uncomfortable with the size of this commit, but it's too
inter-dependant to easily seperate out.

The main changes:

COMPAT_LINUX is *GONE*. Most of the code has been moved out of the i386
machine dependent section into the linux emulator itself. The int 0x80
syscall code was almost identical to the lcall 7,0 code and a minor tweak
allows them to both be used with the same C code. All kernels can now
just modload the lkm and it'll DTRT without having to rebuild the kernel
first. Like IBCS2, you can statically compile it in with "options LINUX".

A pile of new syscalls implemented, including getdents(), llseek(),
readv(), writev(), msync(), personality(). The Linux-ELF libraries want
to use some of these.

linux_select() now obeys Linux semantics, ie: returns the time remaining
of the timeout value rather than leaving it the original value.

Quite a few bugs removed, including incorrect arguments being used in
syscalls.. eg: mixups between passing the sigset as an int, vs passing
it as a pointer and doing a copyin(), missing return values, unhandled
cases, SIOC* ioctls, etc.

The build for the code has changed. i386/conf/files now knows how
to build linux_genassym and generate linux_assym.h on the fly.

Supporting changes elsewhere in the kernel:

The user-mode signal trampoline has moved from the U area to immediately
below the top of the stack (below PS_STRINGS). This allows the different
binary emulations to have their own signal trampoline code (which gets rid
of the hardwired syscall 103 (sigreturn on BSD, syslog on Linux)) and so
that the emulator can provide the exact "struct sigcontext *" argument to
the program's signal handlers.

The sigstack's "ss_flags" now uses SS_DISABLE and SS_ONSTACK flags, which
have the same values as the re-used SA_DISABLE and SA_ONSTACK which are
intended for sigaction only. This enables the support of a SA_RESETHAND
flag to sigaction to implement the gross SYSV and Linux SA_ONESHOT signal
semantics where the signal handler is reset when it's triggered.

makesyscalls.sh no longer appends the struct sysentvec on the end of the
generated init_sysent.c code. It's a lot saner to have it in a seperate
file rather than trying to update the structure inside the awk script. :-)

At exec time, the dozen bytes or so of signal trampoline code are copied
to the top of the user's stack, rather than obtaining the trampoline code
the old way by getting a clone of the parent's user area. This allows
Linux and native binaries to freely exec each other without getting
trampolines mixed up.

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Also move /var/db/kvm_kernel.db to /var/db/kvm_kernel.old.db IF we change
sysctl kern.bootfile - since libkvm expects it there.

Only change the sysctl variable if it presently points to /kernel.

Delete a couple of unnecessary dependencies on Makefile.

Removed almost all traces of libkern.a. The objects that were in
libkern.a are now specified by listing their source files in
files.${MACHINE}. The list is machine-dependent to save space.
All the

Removed almost all traces of libkern.a. The objects that were in
libkern.a are now specified by listing their source files in
files.${MACHINE}. The list is machine-dependent to save space.
All the necessary object for each machine must be linked into the
kernel in case an lkm wants one.

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Added `-Wstrict-prototypes -Wmissing-prototypes' to CWARNFLAGS so that
prototypes don't go missing again. Also added -Winline so that some
doubtful (non-)inlines get fixed.

bsd.kmod.mk:
Also added

Added `-Wstrict-prototypes -Wmissing-prototypes' to CWARNFLAGS so that
prototypes don't go missing again. Also added -Winline so that some
doubtful (non-)inlines get fixed.

bsd.kmod.mk:
Also added `-Wreturn-type -Wimplicit -Wnested-externs' to catch up
with the kernel.

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i386 is defined by the compiler, so don't define it here. LOAD_ADDRESS
is only used in the Makefile, so don't define it in CFLAGS.

Add a DRIVER_S= definition that config wants to use for assembler
source. This was copied from NORMAL_S..

When moving kernel to kernel.old, also change kern.bootfile.to
kernel.old. This is a solution for only the first install
on a running system, but it's better than it is now.

Use the new config(8) %SFILES token to auto-generate the SFILES list.

Note: THIS REQUIRES THAT YOU REBUILD CONFIG(8)!!!

Make everything except the unsupported network sources compile cleanly
with -Wnested-extern.

Fix clean rule to remove remove everything that isn't created by config
except .depend and `version'.

Remove trailing whitespace.

Make `make links' work by leaving swapkernel.c off out of the links processing
(it is never generic).

Modify behavior of INCLUDES to never look in /usr/include unless we
can't find the src/include directory.

Reviewed by: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Submitted by: Mike Pritchard <p

Modify behavior of INCLUDES to never look in /usr/include unless we
can't find the src/include directory.

Reviewed by: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Submitted by: Mike Pritchard <pritc003@maroon.tc.umn.edu>

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Added -I/usrinclude to the tail end of the INCLUDES line. This hack
will cause kernel compiles to work even if the src/includes directory
doesn't exist but still do the 'Right Thing' and pull files

Added -I/usrinclude to the tail end of the INCLUDES line. This hack
will cause kernel compiles to work even if the src/includes directory
doesn't exist but still do the 'Right Thing' and pull files from the
source tree if it does exist.

Reviewed by: Bruce Evans

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CVS:

Enable -Wimplicit again.
bash: /src/z1: No such file or directory

Reviewed by:
Submitted by:
Obtained from:

Disable previous change. I missed a lot of implicit declarations.

Add -Wimplicit to ${CWARNFLAGS} so that implicitly declared functions
don't come back. There are still a few for unsupported network protocols.

Removed obsolete vtrace() remnants.

Fix "dependency" spelling error. Implement "clean" entries for device
config entries. Add clean rules to aic7xxx and aic7xxx_seq.h.

Submitted by: Pointed out by Bruce Evans <bde@zeta.org.au>

Use relative include path and -nostdinc avoid getting anything from
/usr/include.

Pass '-m' to symorder. Kernels without INET will fail otherwise.