we no longer need to guard against access from hardware interrupt handlers.
Additionally, if cloning a process with CLONE_SIGHAND, arrange to have the
child process share the parent's lock so that signal state may be kept in
sync. Partially addresses PR kern/37437.
Instead of passing the (un)real system call code and syscall table pointer,
just pass the number of arguments - which is what ktrace really wants.
Ride forthcoming 4.99.53
- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.
This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.
- add the useful space and control registers to struct reg
- update process_{read,write}_regs accordingly
- use MID_HPPA in core dumps.
- dump the fp regs into cores.
- add single stepping support from OpenBSD.
- Starting with the right set of fp, pc, and rp in all cases.
- Dropping the argument printing stuff as it could never work.
- Backtrace through traps and decode syscalls properly by
making sure the trapframe is at a known offset from the stack
pointer in both cases. Also, ensure that the frame pointer
is zero so that we can detect traps.
